LCOV - code coverage report
Current view: top level - lkbce/include/linux - security.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Linux Security plug
       3             :  *
       4             :  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
       5             :  * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
       6             :  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
       7             :  * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
       8             :  * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
       9             :  *
      10             :  *      This program is free software; you can redistribute it and/or modify
      11             :  *      it under the terms of the GNU General Public License as published by
      12             :  *      the Free Software Foundation; either version 2 of the License, or
      13             :  *      (at your option) any later version.
      14             :  *
      15             :  *      Due to this file being licensed under the GPL there is controversy over
      16             :  *      whether this permits you to write a module that #includes this file
      17             :  *      without placing your module under the GPL.  Please consult a lawyer for
      18             :  *      advice before doing this.
      19             :  *
      20             :  */
      21             : 
      22             : #ifndef __LINUX_SECURITY_H
      23             : #define __LINUX_SECURITY_H
      24             : 
      25             : #include <linux/fs.h>
      26             : #include <linux/binfmts.h>
      27             : #include <linux/signal.h>
      28             : #include <linux/resource.h>
      29             : #include <linux/sem.h>
      30             : #include <linux/shm.h>
      31             : #include <linux/mm.h> /* PAGE_ALIGN */
      32             : #include <linux/msg.h>
      33             : #include <linux/sched.h>
      34             : #include <linux/key.h>
      35             : #include <linux/xfrm.h>
      36             : #include <linux/gfp.h>
      37             : #include <net/flow.h>
      38             : 
      39             : /* Maximum number of letters for an LSM name string */
      40             : #define SECURITY_NAME_MAX       10
      41             : 
      42             : /* If capable should audit the security request */
      43             : #define SECURITY_CAP_NOAUDIT 0
      44             : #define SECURITY_CAP_AUDIT 1
      45             : 
      46             : struct ctl_table;
      47             : struct audit_krule;
      48             : 
      49             : /*
      50             :  * These functions are in security/capability.c and are used
      51             :  * as the default capabilities functions
      52             :  */
      53             : extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
      54             :                        int cap, int audit);
      55             : extern int cap_settime(struct timespec *ts, struct timezone *tz);
      56             : extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
      57             : extern int cap_ptrace_traceme(struct task_struct *parent);
      58             : extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
      59             : extern int cap_capset(struct cred *new, const struct cred *old,
      60             :                       const kernel_cap_t *effective,
      61             :                       const kernel_cap_t *inheritable,
      62             :                       const kernel_cap_t *permitted);
      63             : extern int cap_bprm_set_creds(struct linux_binprm *bprm);
      64             : extern int cap_bprm_secureexec(struct linux_binprm *bprm);
      65             : extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
      66             :                               const void *value, size_t size, int flags);
      67             : extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
      68             : extern int cap_inode_need_killpriv(struct dentry *dentry);
      69             : extern int cap_inode_killpriv(struct dentry *dentry);
      70             : extern int cap_file_mmap(struct file *file, unsigned long reqprot,
      71             :                          unsigned long prot, unsigned long flags,
      72             :                          unsigned long addr, unsigned long addr_only);
      73             : extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
      74             : extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
      75             :                           unsigned long arg4, unsigned long arg5);
      76             : extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
      77             : extern int cap_task_setioprio(struct task_struct *p, int ioprio);
      78             : extern int cap_task_setnice(struct task_struct *p, int nice);
      79             : extern int cap_syslog(int type);
      80             : extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
      81             : 
      82             : struct msghdr;
      83             : struct sk_buff;
      84             : struct sock;
      85             : struct sockaddr;
      86             : struct socket;
      87             : struct flowi;
      88             : struct dst_entry;
      89             : struct xfrm_selector;
      90             : struct xfrm_policy;
      91             : struct xfrm_state;
      92             : struct xfrm_user_sec_ctx;
      93             : struct seq_file;
      94             : 
      95             : extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
      96             : extern int cap_netlink_recv(struct sk_buff *skb, int cap);
      97             : 
      98             : #ifdef CONFIG_MMU
      99             : extern unsigned long mmap_min_addr;
     100             : extern unsigned long dac_mmap_min_addr;
     101             : #else
     102             : #define dac_mmap_min_addr       0UL
     103             : #endif
     104             : 
     105             : /*
     106             :  * Values used in the task_security_ops calls
     107             :  */
     108             : /* setuid or setgid, id0 == uid or gid */
     109             : #define LSM_SETID_ID    1
     110             : 
     111             : /* setreuid or setregid, id0 == real, id1 == eff */
     112             : #define LSM_SETID_RE    2
     113             : 
     114             : /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
     115             : #define LSM_SETID_RES   4
     116             : 
     117             : /* setfsuid or setfsgid, id0 == fsuid or fsgid */
     118             : #define LSM_SETID_FS    8
     119             : 
     120             : /* forward declares to avoid warnings */
     121             : struct sched_param;
     122             : struct request_sock;
     123             : 
     124             : /* bprm->unsafe reasons */
     125             : #define LSM_UNSAFE_SHARE        1
     126             : #define LSM_UNSAFE_PTRACE       2
     127             : #define LSM_UNSAFE_PTRACE_CAP   4
     128             : 
     129             : #ifdef CONFIG_MMU
     130             : /*
     131             :  * If a hint addr is less than mmap_min_addr change hint to be as
     132             :  * low as possible but still greater than mmap_min_addr
     133             :  */
     134             : static inline unsigned long round_hint_to_min(unsigned long hint)
     135             : {
     136             :         hint &= PAGE_MASK;
     137             :         if (((void *)hint != NULL) &&
     138             :             (hint < mmap_min_addr))
     139             :                 return PAGE_ALIGN(mmap_min_addr);
     140             :         return hint;
     141             : }
     142             : extern int mmap_min_addr_handler(struct ctl_table *table, int write,
     143             :                                  void __user *buffer, size_t *lenp, loff_t *ppos);
     144             : #endif
     145             : 
     146             : #ifdef CONFIG_SECURITY
     147             : 
     148             : struct security_mnt_opts {
     149             :         char **mnt_opts;
     150             :         int *mnt_opts_flags;
     151             :         int num_mnt_opts;
     152             : };
     153             : 
     154             : static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
     155             : {
     156             :         opts->mnt_opts = NULL;
     157             :         opts->mnt_opts_flags = NULL;
     158             :         opts->num_mnt_opts = 0;
     159             : }
     160             : 
     161             : static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
     162             : {
     163             :         int i;
     164             :         if (opts->mnt_opts)
     165             :                 for (i = 0; i < opts->num_mnt_opts; i++)
     166             :                         kfree(opts->mnt_opts[i]);
     167             :         kfree(opts->mnt_opts);
     168             :         opts->mnt_opts = NULL;
     169             :         kfree(opts->mnt_opts_flags);
     170             :         opts->mnt_opts_flags = NULL;
     171             :         opts->num_mnt_opts = 0;
     172             : }
     173             : 
     174             : /**
     175             :  * struct security_operations - main security structure
     176             :  *
     177             :  * Security module identifier.
     178             :  *
     179             :  * @name:
     180             :  *      A string that acts as a unique identifeir for the LSM with max number
     181             :  *      of characters = SECURITY_NAME_MAX.
     182             :  *
     183             :  * Security hooks for program execution operations.
     184             :  *
     185             :  * @bprm_set_creds:
     186             :  *      Save security information in the bprm->security field, typically based
     187             :  *      on information about the bprm->file, for later use by the apply_creds
     188             :  *      hook.  This hook may also optionally check permissions (e.g. for
     189             :  *      transitions between security domains).
     190             :  *      This hook may be called multiple times during a single execve, e.g. for
     191             :  *      interpreters.  The hook can tell whether it has already been called by
     192             :  *      checking to see if @bprm->security is non-NULL.  If so, then the hook
     193             :  *      may decide either to retain the security information saved earlier or
     194             :  *      to replace it.
     195             :  *      @bprm contains the linux_binprm structure.
     196             :  *      Return 0 if the hook is successful and permission is granted.
     197             :  * @bprm_check_security:
     198             :  *      This hook mediates the point when a search for a binary handler will
     199             :  *      begin.  It allows a check the @bprm->security value which is set in the
     200             :  *      preceding set_creds call.  The primary difference from set_creds is
     201             :  *      that the argv list and envp list are reliably available in @bprm.  This
     202             :  *      hook may be called multiple times during a single execve; and in each
     203             :  *      pass set_creds is called first.
     204             :  *      @bprm contains the linux_binprm structure.
     205             :  *      Return 0 if the hook is successful and permission is granted.
     206             :  * @bprm_committing_creds:
     207             :  *      Prepare to install the new security attributes of a process being
     208             :  *      transformed by an execve operation, based on the old credentials
     209             :  *      pointed to by @current->cred and the information set in @bprm->cred by
     210             :  *      the bprm_set_creds hook.  @bprm points to the linux_binprm structure.
     211             :  *      This hook is a good place to perform state changes on the process such
     212             :  *      as closing open file descriptors to which access will no longer be
     213             :  *      granted when the attributes are changed.  This is called immediately
     214             :  *      before commit_creds().
     215             :  * @bprm_committed_creds:
     216             :  *      Tidy up after the installation of the new security attributes of a
     217             :  *      process being transformed by an execve operation.  The new credentials
     218             :  *      have, by this point, been set to @current->cred.  @bprm points to the
     219             :  *      linux_binprm structure.  This hook is a good place to perform state
     220             :  *      changes on the process such as clearing out non-inheritable signal
     221             :  *      state.  This is called immediately after commit_creds().
     222             :  * @bprm_secureexec:
     223             :  *      Return a boolean value (0 or 1) indicating whether a "secure exec"
     224             :  *      is required.  The flag is passed in the auxiliary table
     225             :  *      on the initial stack to the ELF interpreter to indicate whether libc
     226             :  *      should enable secure mode.
     227             :  *      @bprm contains the linux_binprm structure.
     228             :  *
     229             :  * Security hooks for filesystem operations.
     230             :  *
     231             :  * @sb_alloc_security:
     232             :  *      Allocate and attach a security structure to the sb->s_security field.
     233             :  *      The s_security field is initialized to NULL when the structure is
     234             :  *      allocated.
     235             :  *      @sb contains the super_block structure to be modified.
     236             :  *      Return 0 if operation was successful.
     237             :  * @sb_free_security:
     238             :  *      Deallocate and clear the sb->s_security field.
     239             :  *      @sb contains the super_block structure to be modified.
     240             :  * @sb_statfs:
     241             :  *      Check permission before obtaining filesystem statistics for the @mnt
     242             :  *      mountpoint.
     243             :  *      @dentry is a handle on the superblock for the filesystem.
     244             :  *      Return 0 if permission is granted.
     245             :  * @sb_mount:
     246             :  *      Check permission before an object specified by @dev_name is mounted on
     247             :  *      the mount point named by @nd.  For an ordinary mount, @dev_name
     248             :  *      identifies a device if the file system type requires a device.  For a
     249             :  *      remount (@flags & MS_REMOUNT), @dev_name is irrelevant.  For a
     250             :  *      loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
     251             :  *      pathname of the object being mounted.
     252             :  *      @dev_name contains the name for object being mounted.
     253             :  *      @path contains the path for mount point object.
     254             :  *      @type contains the filesystem type.
     255             :  *      @flags contains the mount flags.
     256             :  *      @data contains the filesystem-specific data.
     257             :  *      Return 0 if permission is granted.
     258             :  * @sb_copy_data:
     259             :  *      Allow mount option data to be copied prior to parsing by the filesystem,
     260             :  *      so that the security module can extract security-specific mount
     261             :  *      options cleanly (a filesystem may modify the data e.g. with strsep()).
     262             :  *      This also allows the original mount data to be stripped of security-
     263             :  *      specific options to avoid having to make filesystems aware of them.
     264             :  *      @type the type of filesystem being mounted.
     265             :  *      @orig the original mount data copied from userspace.
     266             :  *      @copy copied data which will be passed to the security module.
     267             :  *      Returns 0 if the copy was successful.
     268             :  * @sb_check_sb:
     269             :  *      Check permission before the device with superblock @mnt->sb is mounted
     270             :  *      on the mount point named by @nd.
     271             :  *      @mnt contains the vfsmount for device being mounted.
     272             :  *      @path contains the path for the mount point.
     273             :  *      Return 0 if permission is granted.
     274             :  * @sb_umount:
     275             :  *      Check permission before the @mnt file system is unmounted.
     276             :  *      @mnt contains the mounted file system.
     277             :  *      @flags contains the unmount flags, e.g. MNT_FORCE.
     278             :  *      Return 0 if permission is granted.
     279             :  * @sb_umount_close:
     280             :  *      Close any files in the @mnt mounted filesystem that are held open by
     281             :  *      the security module.  This hook is called during an umount operation
     282             :  *      prior to checking whether the filesystem is still busy.
     283             :  *      @mnt contains the mounted filesystem.
     284             :  * @sb_umount_busy:
     285             :  *      Handle a failed umount of the @mnt mounted filesystem, e.g.  re-opening
     286             :  *      any files that were closed by umount_close.  This hook is called during
     287             :  *      an umount operation if the umount fails after a call to the
     288             :  *      umount_close hook.
     289             :  *      @mnt contains the mounted filesystem.
     290             :  * @sb_post_remount:
     291             :  *      Update the security module's state when a filesystem is remounted.
     292             :  *      This hook is only called if the remount was successful.
     293             :  *      @mnt contains the mounted file system.
     294             :  *      @flags contains the new filesystem flags.
     295             :  *      @data contains the filesystem-specific data.
     296             :  * @sb_post_addmount:
     297             :  *      Update the security module's state when a filesystem is mounted.
     298             :  *      This hook is called any time a mount is successfully grafetd to
     299             :  *      the tree.
     300             :  *      @mnt contains the mounted filesystem.
     301             :  *      @mountpoint contains the path for the mount point.
     302             :  * @sb_pivotroot:
     303             :  *      Check permission before pivoting the root filesystem.
     304             :  *      @old_path contains the path for the new location of the current root (put_old).
     305             :  *      @new_path contains the path for the new root (new_root).
     306             :  *      Return 0 if permission is granted.
     307             :  * @sb_post_pivotroot:
     308             :  *      Update module state after a successful pivot.
     309             :  *      @old_path contains the path for the old root.
     310             :  *      @new_path contains the path for the new root.
     311             :  * @sb_set_mnt_opts:
     312             :  *      Set the security relevant mount options used for a superblock
     313             :  *      @sb the superblock to set security mount options for
     314             :  *      @opts binary data structure containing all lsm mount data
     315             :  * @sb_clone_mnt_opts:
     316             :  *      Copy all security options from a given superblock to another
     317             :  *      @oldsb old superblock which contain information to clone
     318             :  *      @newsb new superblock which needs filled in
     319             :  * @sb_parse_opts_str:
     320             :  *      Parse a string of security data filling in the opts structure
     321             :  *      @options string containing all mount options known by the LSM
     322             :  *      @opts binary data structure usable by the LSM
     323             :  *
     324             :  * Security hooks for inode operations.
     325             :  *
     326             :  * @inode_alloc_security:
     327             :  *      Allocate and attach a security structure to @inode->i_security.  The
     328             :  *      i_security field is initialized to NULL when the inode structure is
     329             :  *      allocated.
     330             :  *      @inode contains the inode structure.
     331             :  *      Return 0 if operation was successful.
     332             :  * @inode_free_security:
     333             :  *      @inode contains the inode structure.
     334             :  *      Deallocate the inode security structure and set @inode->i_security to
     335             :  *      NULL.
     336             :  * @inode_init_security:
     337             :  *      Obtain the security attribute name suffix and value to set on a newly
     338             :  *      created inode and set up the incore security field for the new inode.
     339             :  *      This hook is called by the fs code as part of the inode creation
     340             :  *      transaction and provides for atomic labeling of the inode, unlike
     341             :  *      the post_create/mkdir/... hooks called by the VFS.  The hook function
     342             :  *      is expected to allocate the name and value via kmalloc, with the caller
     343             :  *      being responsible for calling kfree after using them.
     344             :  *      If the security module does not use security attributes or does
     345             :  *      not wish to put a security attribute on this particular inode,
     346             :  *      then it should return -EOPNOTSUPP to skip this processing.
     347             :  *      @inode contains the inode structure of the newly created inode.
     348             :  *      @dir contains the inode structure of the parent directory.
     349             :  *      @name will be set to the allocated name suffix (e.g. selinux).
     350             :  *      @value will be set to the allocated attribute value.
     351             :  *      @len will be set to the length of the value.
     352             :  *      Returns 0 if @name and @value have been successfully set,
     353             :  *              -EOPNOTSUPP if no security attribute is needed, or
     354             :  *              -ENOMEM on memory allocation failure.
     355             :  * @inode_create:
     356             :  *      Check permission to create a regular file.
     357             :  *      @dir contains inode structure of the parent of the new file.
     358             :  *      @dentry contains the dentry structure for the file to be created.
     359             :  *      @mode contains the file mode of the file to be created.
     360             :  *      Return 0 if permission is granted.
     361             :  * @inode_link:
     362             :  *      Check permission before creating a new hard link to a file.
     363             :  *      @old_dentry contains the dentry structure for an existing link to the file.
     364             :  *      @dir contains the inode structure of the parent directory of the new link.
     365             :  *      @new_dentry contains the dentry structure for the new link.
     366             :  *      Return 0 if permission is granted.
     367             :  * @path_link:
     368             :  *      Check permission before creating a new hard link to a file.
     369             :  *      @old_dentry contains the dentry structure for an existing link
     370             :  *      to the file.
     371             :  *      @new_dir contains the path structure of the parent directory of
     372             :  *      the new link.
     373             :  *      @new_dentry contains the dentry structure for the new link.
     374             :  *      Return 0 if permission is granted.
     375             :  * @inode_unlink:
     376             :  *      Check the permission to remove a hard link to a file.
     377             :  *      @dir contains the inode structure of parent directory of the file.
     378             :  *      @dentry contains the dentry structure for file to be unlinked.
     379             :  *      Return 0 if permission is granted.
     380             :  * @path_unlink:
     381             :  *      Check the permission to remove a hard link to a file.
     382             :  *      @dir contains the path structure of parent directory of the file.
     383             :  *      @dentry contains the dentry structure for file to be unlinked.
     384             :  *      Return 0 if permission is granted.
     385             :  * @inode_symlink:
     386             :  *      Check the permission to create a symbolic link to a file.
     387             :  *      @dir contains the inode structure of parent directory of the symbolic link.
     388             :  *      @dentry contains the dentry structure of the symbolic link.
     389             :  *      @old_name contains the pathname of file.
     390             :  *      Return 0 if permission is granted.
     391             :  * @path_symlink:
     392             :  *      Check the permission to create a symbolic link to a file.
     393             :  *      @dir contains the path structure of parent directory of
     394             :  *      the symbolic link.
     395             :  *      @dentry contains the dentry structure of the symbolic link.
     396             :  *      @old_name contains the pathname of file.
     397             :  *      Return 0 if permission is granted.
     398             :  * @inode_mkdir:
     399             :  *      Check permissions to create a new directory in the existing directory
     400             :  *      associated with inode strcture @dir.
     401             :  *      @dir containst the inode structure of parent of the directory to be created.
     402             :  *      @dentry contains the dentry structure of new directory.
     403             :  *      @mode contains the mode of new directory.
     404             :  *      Return 0 if permission is granted.
     405             :  * @path_mkdir:
     406             :  *      Check permissions to create a new directory in the existing directory
     407             :  *      associated with path strcture @path.
     408             :  *      @dir containst the path structure of parent of the directory
     409             :  *      to be created.
     410             :  *      @dentry contains the dentry structure of new directory.
     411             :  *      @mode contains the mode of new directory.
     412             :  *      Return 0 if permission is granted.
     413             :  * @inode_rmdir:
     414             :  *      Check the permission to remove a directory.
     415             :  *      @dir contains the inode structure of parent of the directory to be removed.
     416             :  *      @dentry contains the dentry structure of directory to be removed.
     417             :  *      Return 0 if permission is granted.
     418             :  * @path_rmdir:
     419             :  *      Check the permission to remove a directory.
     420             :  *      @dir contains the path structure of parent of the directory to be
     421             :  *      removed.
     422             :  *      @dentry contains the dentry structure of directory to be removed.
     423             :  *      Return 0 if permission is granted.
     424             :  * @inode_mknod:
     425             :  *      Check permissions when creating a special file (or a socket or a fifo
     426             :  *      file created via the mknod system call).  Note that if mknod operation
     427             :  *      is being done for a regular file, then the create hook will be called
     428             :  *      and not this hook.
     429             :  *      @dir contains the inode structure of parent of the new file.
     430             :  *      @dentry contains the dentry structure of the new file.
     431             :  *      @mode contains the mode of the new file.
     432             :  *      @dev contains the device number.
     433             :  *      Return 0 if permission is granted.
     434             :  * @path_mknod:
     435             :  *      Check permissions when creating a file. Note that this hook is called
     436             :  *      even if mknod operation is being done for a regular file.
     437             :  *      @dir contains the path structure of parent of the new file.
     438             :  *      @dentry contains the dentry structure of the new file.
     439             :  *      @mode contains the mode of the new file.
     440             :  *      @dev contains the undecoded device number. Use new_decode_dev() to get
     441             :  *      the decoded device number.
     442             :  *      Return 0 if permission is granted.
     443             :  * @inode_rename:
     444             :  *      Check for permission to rename a file or directory.
     445             :  *      @old_dir contains the inode structure for parent of the old link.
     446             :  *      @old_dentry contains the dentry structure of the old link.
     447             :  *      @new_dir contains the inode structure for parent of the new link.
     448             :  *      @new_dentry contains the dentry structure of the new link.
     449             :  *      Return 0 if permission is granted.
     450             :  * @path_rename:
     451             :  *      Check for permission to rename a file or directory.
     452             :  *      @old_dir contains the path structure for parent of the old link.
     453             :  *      @old_dentry contains the dentry structure of the old link.
     454             :  *      @new_dir contains the path structure for parent of the new link.
     455             :  *      @new_dentry contains the dentry structure of the new link.
     456             :  *      Return 0 if permission is granted.
     457             :  * @path_chmod:
     458             :  *      Check for permission to change DAC's permission of a file or directory.
     459             :  *      @dentry contains the dentry structure.
     460             :  *      @mnt contains the vfsmnt structure.
     461             :  *      @mode contains DAC's mode.
     462             :  *      Return 0 if permission is granted.
     463             :  * @path_chown:
     464             :  *      Check for permission to change owner/group of a file or directory.
     465             :  *      @path contains the path structure.
     466             :  *      @uid contains new owner's ID.
     467             :  *      @gid contains new group's ID.
     468             :  *      Return 0 if permission is granted.
     469             :  * @path_chroot:
     470             :  *      Check for permission to change root directory.
     471             :  *      @path contains the path structure.
     472             :  *      Return 0 if permission is granted.
     473             :  * @inode_readlink:
     474             :  *      Check the permission to read the symbolic link.
     475             :  *      @dentry contains the dentry structure for the file link.
     476             :  *      Return 0 if permission is granted.
     477             :  * @inode_follow_link:
     478             :  *      Check permission to follow a symbolic link when looking up a pathname.
     479             :  *      @dentry contains the dentry structure for the link.
     480             :  *      @nd contains the nameidata structure for the parent directory.
     481             :  *      Return 0 if permission is granted.
     482             :  * @inode_permission:
     483             :  *      Check permission before accessing an inode.  This hook is called by the
     484             :  *      existing Linux permission function, so a security module can use it to
     485             :  *      provide additional checking for existing Linux permission checks.
     486             :  *      Notice that this hook is called when a file is opened (as well as many
     487             :  *      other operations), whereas the file_security_ops permission hook is
     488             :  *      called when the actual read/write operations are performed.
     489             :  *      @inode contains the inode structure to check.
     490             :  *      @mask contains the permission mask.
     491             :  *      @nd contains the nameidata (may be NULL).
     492             :  *      Return 0 if permission is granted.
     493             :  * @inode_setattr:
     494             :  *      Check permission before setting file attributes.  Note that the kernel
     495             :  *      call to notify_change is performed from several locations, whenever
     496             :  *      file attributes change (such as when a file is truncated, chown/chmod
     497             :  *      operations, transferring disk quotas, etc).
     498             :  *      @dentry contains the dentry structure for the file.
     499             :  *      @attr is the iattr structure containing the new file attributes.
     500             :  *      Return 0 if permission is granted.
     501             :  * @path_truncate:
     502             :  *      Check permission before truncating a file.
     503             :  *      @path contains the path structure for the file.
     504             :  *      @length is the new length of the file.
     505             :  *      @time_attrs is the flags passed to do_truncate().
     506             :  *      Return 0 if permission is granted.
     507             :  * @inode_getattr:
     508             :  *      Check permission before obtaining file attributes.
     509             :  *      @mnt is the vfsmount where the dentry was looked up
     510             :  *      @dentry contains the dentry structure for the file.
     511             :  *      Return 0 if permission is granted.
     512             :  * @inode_delete:
     513             :  *      @inode contains the inode structure for deleted inode.
     514             :  *      This hook is called when a deleted inode is released (i.e. an inode
     515             :  *      with no hard links has its use count drop to zero).  A security module
     516             :  *      can use this hook to release any persistent label associated with the
     517             :  *      inode.
     518             :  * @inode_setxattr:
     519             :  *      Check permission before setting the extended attributes
     520             :  *      @value identified by @name for @dentry.
     521             :  *      Return 0 if permission is granted.
     522             :  * @inode_post_setxattr:
     523             :  *      Update inode security field after successful setxattr operation.
     524             :  *      @value identified by @name for @dentry.
     525             :  * @inode_getxattr:
     526             :  *      Check permission before obtaining the extended attributes
     527             :  *      identified by @name for @dentry.
     528             :  *      Return 0 if permission is granted.
     529             :  * @inode_listxattr:
     530             :  *      Check permission before obtaining the list of extended attribute
     531             :  *      names for @dentry.
     532             :  *      Return 0 if permission is granted.
     533             :  * @inode_removexattr:
     534             :  *      Check permission before removing the extended attribute
     535             :  *      identified by @name for @dentry.
     536             :  *      Return 0 if permission is granted.
     537             :  * @inode_getsecurity:
     538             :  *      Retrieve a copy of the extended attribute representation of the
     539             :  *      security label associated with @name for @inode via @buffer.  Note that
     540             :  *      @name is the remainder of the attribute name after the security prefix
     541             :  *      has been removed. @alloc is used to specify of the call should return a
     542             :  *      value via the buffer or just the value length Return size of buffer on
     543             :  *      success.
     544             :  * @inode_setsecurity:
     545             :  *      Set the security label associated with @name for @inode from the
     546             :  *      extended attribute value @value.  @size indicates the size of the
     547             :  *      @value in bytes.  @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
     548             :  *      Note that @name is the remainder of the attribute name after the
     549             :  *      security. prefix has been removed.
     550             :  *      Return 0 on success.
     551             :  * @inode_listsecurity:
     552             :  *      Copy the extended attribute names for the security labels
     553             :  *      associated with @inode into @buffer.  The maximum size of @buffer
     554             :  *      is specified by @buffer_size.  @buffer may be NULL to request
     555             :  *      the size of the buffer required.
     556             :  *      Returns number of bytes used/required on success.
     557             :  * @inode_need_killpriv:
     558             :  *      Called when an inode has been changed.
     559             :  *      @dentry is the dentry being changed.
     560             :  *      Return <0 on error to abort the inode change operation.
     561             :  *      Return 0 if inode_killpriv does not need to be called.
     562             :  *      Return >0 if inode_killpriv does need to be called.
     563             :  * @inode_killpriv:
     564             :  *      The setuid bit is being removed.  Remove similar security labels.
     565             :  *      Called with the dentry->d_inode->i_mutex held.
     566             :  *      @dentry is the dentry being changed.
     567             :  *      Return 0 on success.  If error is returned, then the operation
     568             :  *      causing setuid bit removal is failed.
     569             :  * @inode_getsecid:
     570             :  *      Get the secid associated with the node.
     571             :  *      @inode contains a pointer to the inode.
     572             :  *      @secid contains a pointer to the location where result will be saved.
     573             :  *      In case of failure, @secid will be set to zero.
     574             :  *
     575             :  * Security hooks for file operations
     576             :  *
     577             :  * @file_permission:
     578             :  *      Check file permissions before accessing an open file.  This hook is
     579             :  *      called by various operations that read or write files.  A security
     580             :  *      module can use this hook to perform additional checking on these
     581             :  *      operations, e.g.  to revalidate permissions on use to support privilege
     582             :  *      bracketing or policy changes.  Notice that this hook is used when the
     583             :  *      actual read/write operations are performed, whereas the
     584             :  *      inode_security_ops hook is called when a file is opened (as well as
     585             :  *      many other operations).
     586             :  *      Caveat:  Although this hook can be used to revalidate permissions for
     587             :  *      various system call operations that read or write files, it does not
     588             :  *      address the revalidation of permissions for memory-mapped files.
     589             :  *      Security modules must handle this separately if they need such
     590             :  *      revalidation.
     591             :  *      @file contains the file structure being accessed.
     592             :  *      @mask contains the requested permissions.
     593             :  *      Return 0 if permission is granted.
     594             :  * @file_alloc_security:
     595             :  *      Allocate and attach a security structure to the file->f_security field.
     596             :  *      The security field is initialized to NULL when the structure is first
     597             :  *      created.
     598             :  *      @file contains the file structure to secure.
     599             :  *      Return 0 if the hook is successful and permission is granted.
     600             :  * @file_free_security:
     601             :  *      Deallocate and free any security structures stored in file->f_security.
     602             :  *      @file contains the file structure being modified.
     603             :  * @file_ioctl:
     604             :  *      @file contains the file structure.
     605             :  *      @cmd contains the operation to perform.
     606             :  *      @arg contains the operational arguments.
     607             :  *      Check permission for an ioctl operation on @file.  Note that @arg can
     608             :  *      sometimes represents a user space pointer; in other cases, it may be a
     609             :  *      simple integer value.  When @arg represents a user space pointer, it
     610             :  *      should never be used by the security module.
     611             :  *      Return 0 if permission is granted.
     612             :  * @file_mmap :
     613             :  *      Check permissions for a mmap operation.  The @file may be NULL, e.g.
     614             :  *      if mapping anonymous memory.
     615             :  *      @file contains the file structure for file to map (may be NULL).
     616             :  *      @reqprot contains the protection requested by the application.
     617             :  *      @prot contains the protection that will be applied by the kernel.
     618             :  *      @flags contains the operational flags.
     619             :  *      Return 0 if permission is granted.
     620             :  * @file_mprotect:
     621             :  *      Check permissions before changing memory access permissions.
     622             :  *      @vma contains the memory region to modify.
     623             :  *      @reqprot contains the protection requested by the application.
     624             :  *      @prot contains the protection that will be applied by the kernel.
     625             :  *      Return 0 if permission is granted.
     626             :  * @file_lock:
     627             :  *      Check permission before performing file locking operations.
     628             :  *      Note: this hook mediates both flock and fcntl style locks.
     629             :  *      @file contains the file structure.
     630             :  *      @cmd contains the posix-translated lock operation to perform
     631             :  *      (e.g. F_RDLCK, F_WRLCK).
     632             :  *      Return 0 if permission is granted.
     633             :  * @file_fcntl:
     634             :  *      Check permission before allowing the file operation specified by @cmd
     635             :  *      from being performed on the file @file.  Note that @arg can sometimes
     636             :  *      represents a user space pointer; in other cases, it may be a simple
     637             :  *      integer value.  When @arg represents a user space pointer, it should
     638             :  *      never be used by the security module.
     639             :  *      @file contains the file structure.
     640             :  *      @cmd contains the operation to be performed.
     641             :  *      @arg contains the operational arguments.
     642             :  *      Return 0 if permission is granted.
     643             :  * @file_set_fowner:
     644             :  *      Save owner security information (typically from current->security) in
     645             :  *      file->f_security for later use by the send_sigiotask hook.
     646             :  *      @file contains the file structure to update.
     647             :  *      Return 0 on success.
     648             :  * @file_send_sigiotask:
     649             :  *      Check permission for the file owner @fown to send SIGIO or SIGURG to the
     650             :  *      process @tsk.  Note that this hook is sometimes called from interrupt.
     651             :  *      Note that the fown_struct, @fown, is never outside the context of a
     652             :  *      struct file, so the file structure (and associated security information)
     653             :  *      can always be obtained:
     654             :  *              container_of(fown, struct file, f_owner)
     655             :  *      @tsk contains the structure of task receiving signal.
     656             :  *      @fown contains the file owner information.
     657             :  *      @sig is the signal that will be sent.  When 0, kernel sends SIGIO.
     658             :  *      Return 0 if permission is granted.
     659             :  * @file_receive:
     660             :  *      This hook allows security modules to control the ability of a process
     661             :  *      to receive an open file descriptor via socket IPC.
     662             :  *      @file contains the file structure being received.
     663             :  *      Return 0 if permission is granted.
     664             :  *
     665             :  * Security hook for dentry
     666             :  *
     667             :  * @dentry_open
     668             :  *      Save open-time permission checking state for later use upon
     669             :  *      file_permission, and recheck access if anything has changed
     670             :  *      since inode_permission.
     671             :  *
     672             :  * Security hooks for task operations.
     673             :  *
     674             :  * @task_create:
     675             :  *      Check permission before creating a child process.  See the clone(2)
     676             :  *      manual page for definitions of the @clone_flags.
     677             :  *      @clone_flags contains the flags indicating what should be shared.
     678             :  *      Return 0 if permission is granted.
     679             :  * @cred_alloc_blank:
     680             :  *      @cred points to the credentials.
     681             :  *      @gfp indicates the atomicity of any memory allocations.
     682             :  *      Only allocate sufficient memory and attach to @cred such that
     683             :  *      cred_transfer() will not get ENOMEM.
     684             :  * @cred_free:
     685             :  *      @cred points to the credentials.
     686             :  *      Deallocate and clear the cred->security field in a set of credentials.
     687             :  * @cred_prepare:
     688             :  *      @new points to the new credentials.
     689             :  *      @old points to the original credentials.
     690             :  *      @gfp indicates the atomicity of any memory allocations.
     691             :  *      Prepare a new set of credentials by copying the data from the old set.
     692             :  * @cred_commit:
     693             :  *      @new points to the new credentials.
     694             :  *      @old points to the original credentials.
     695             :  *      Install a new set of credentials.
     696             :  * @cred_transfer:
     697             :  *      @new points to the new credentials.
     698             :  *      @old points to the original credentials.
     699             :  *      Transfer data from original creds to new creds
     700             :  * @kernel_act_as:
     701             :  *      Set the credentials for a kernel service to act as (subjective context).
     702             :  *      @new points to the credentials to be modified.
     703             :  *      @secid specifies the security ID to be set
     704             :  *      The current task must be the one that nominated @secid.
     705             :  *      Return 0 if successful.
     706             :  * @kernel_create_files_as:
     707             :  *      Set the file creation context in a set of credentials to be the same as
     708             :  *      the objective context of the specified inode.
     709             :  *      @new points to the credentials to be modified.
     710             :  *      @inode points to the inode to use as a reference.
     711             :  *      The current task must be the one that nominated @inode.
     712             :  *      Return 0 if successful.
     713             :  * @kernel_module_request:
     714             :  *      Ability to trigger the kernel to automatically upcall to userspace for
     715             :  *      userspace to load a kernel module with the given name.
     716             :  *      @kmod_name name of the module requested by the kernel
     717             :  *      Return 0 if successful.
     718             :  * @task_setuid:
     719             :  *      Check permission before setting one or more of the user identity
     720             :  *      attributes of the current process.  The @flags parameter indicates
     721             :  *      which of the set*uid system calls invoked this hook and how to
     722             :  *      interpret the @id0, @id1, and @id2 parameters.  See the LSM_SETID
     723             :  *      definitions at the beginning of this file for the @flags values and
     724             :  *      their meanings.
     725             :  *      @id0 contains a uid.
     726             :  *      @id1 contains a uid.
     727             :  *      @id2 contains a uid.
     728             :  *      @flags contains one of the LSM_SETID_* values.
     729             :  *      Return 0 if permission is granted.
     730             :  * @task_fix_setuid:
     731             :  *      Update the module's state after setting one or more of the user
     732             :  *      identity attributes of the current process.  The @flags parameter
     733             :  *      indicates which of the set*uid system calls invoked this hook.  If
     734             :  *      @new is the set of credentials that will be installed.  Modifications
     735             :  *      should be made to this rather than to @current->cred.
     736             :  *      @old is the set of credentials that are being replaces
     737             :  *      @flags contains one of the LSM_SETID_* values.
     738             :  *      Return 0 on success.
     739             :  * @task_setgid:
     740             :  *      Check permission before setting one or more of the group identity
     741             :  *      attributes of the current process.  The @flags parameter indicates
     742             :  *      which of the set*gid system calls invoked this hook and how to
     743             :  *      interpret the @id0, @id1, and @id2 parameters.  See the LSM_SETID
     744             :  *      definitions at the beginning of this file for the @flags values and
     745             :  *      their meanings.
     746             :  *      @id0 contains a gid.
     747             :  *      @id1 contains a gid.
     748             :  *      @id2 contains a gid.
     749             :  *      @flags contains one of the LSM_SETID_* values.
     750             :  *      Return 0 if permission is granted.
     751             :  * @task_setpgid:
     752             :  *      Check permission before setting the process group identifier of the
     753             :  *      process @p to @pgid.
     754             :  *      @p contains the task_struct for process being modified.
     755             :  *      @pgid contains the new pgid.
     756             :  *      Return 0 if permission is granted.
     757             :  * @task_getpgid:
     758             :  *      Check permission before getting the process group identifier of the
     759             :  *      process @p.
     760             :  *      @p contains the task_struct for the process.
     761             :  *      Return 0 if permission is granted.
     762             :  * @task_getsid:
     763             :  *      Check permission before getting the session identifier of the process
     764             :  *      @p.
     765             :  *      @p contains the task_struct for the process.
     766             :  *      Return 0 if permission is granted.
     767             :  * @task_getsecid:
     768             :  *      Retrieve the security identifier of the process @p.
     769             :  *      @p contains the task_struct for the process and place is into @secid.
     770             :  *      In case of failure, @secid will be set to zero.
     771             :  *
     772             :  * @task_setgroups:
     773             :  *      Check permission before setting the supplementary group set of the
     774             :  *      current process.
     775             :  *      @group_info contains the new group information.
     776             :  *      Return 0 if permission is granted.
     777             :  * @task_setnice:
     778             :  *      Check permission before setting the nice value of @p to @nice.
     779             :  *      @p contains the task_struct of process.
     780             :  *      @nice contains the new nice value.
     781             :  *      Return 0 if permission is granted.
     782             :  * @task_setioprio
     783             :  *      Check permission before setting the ioprio value of @p to @ioprio.
     784             :  *      @p contains the task_struct of process.
     785             :  *      @ioprio contains the new ioprio value
     786             :  *      Return 0 if permission is granted.
     787             :  * @task_getioprio
     788             :  *      Check permission before getting the ioprio value of @p.
     789             :  *      @p contains the task_struct of process.
     790             :  *      Return 0 if permission is granted.
     791             :  * @task_setrlimit:
     792             :  *      Check permission before setting the resource limits of the current
     793             :  *      process for @resource to @new_rlim.  The old resource limit values can
     794             :  *      be examined by dereferencing (current->signal->rlim + resource).
     795             :  *      @resource contains the resource whose limit is being set.
     796             :  *      @new_rlim contains the new limits for @resource.
     797             :  *      Return 0 if permission is granted.
     798             :  * @task_setscheduler:
     799             :  *      Check permission before setting scheduling policy and/or parameters of
     800             :  *      process @p based on @policy and @lp.
     801             :  *      @p contains the task_struct for process.
     802             :  *      @policy contains the scheduling policy.
     803             :  *      @lp contains the scheduling parameters.
     804             :  *      Return 0 if permission is granted.
     805             :  * @task_getscheduler:
     806             :  *      Check permission before obtaining scheduling information for process
     807             :  *      @p.
     808             :  *      @p contains the task_struct for process.
     809             :  *      Return 0 if permission is granted.
     810             :  * @task_movememory
     811             :  *      Check permission before moving memory owned by process @p.
     812             :  *      @p contains the task_struct for process.
     813             :  *      Return 0 if permission is granted.
     814             :  * @task_kill:
     815             :  *      Check permission before sending signal @sig to @p.  @info can be NULL,
     816             :  *      the constant 1, or a pointer to a siginfo structure.  If @info is 1 or
     817             :  *      SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
     818             :  *      from the kernel and should typically be permitted.
     819             :  *      SIGIO signals are handled separately by the send_sigiotask hook in
     820             :  *      file_security_ops.
     821             :  *      @p contains the task_struct for process.
     822             :  *      @info contains the signal information.
     823             :  *      @sig contains the signal value.
     824             :  *      @secid contains the sid of the process where the signal originated
     825             :  *      Return 0 if permission is granted.
     826             :  * @task_wait:
     827             :  *      Check permission before allowing a process to reap a child process @p
     828             :  *      and collect its status information.
     829             :  *      @p contains the task_struct for process.
     830             :  *      Return 0 if permission is granted.
     831             :  * @task_prctl:
     832             :  *      Check permission before performing a process control operation on the
     833             :  *      current process.
     834             :  *      @option contains the operation.
     835             :  *      @arg2 contains a argument.
     836             :  *      @arg3 contains a argument.
     837             :  *      @arg4 contains a argument.
     838             :  *      @arg5 contains a argument.
     839             :  *      Return -ENOSYS if no-one wanted to handle this op, any other value to
     840             :  *      cause prctl() to return immediately with that value.
     841             :  * @task_to_inode:
     842             :  *      Set the security attributes for an inode based on an associated task's
     843             :  *      security attributes, e.g. for /proc/pid inodes.
     844             :  *      @p contains the task_struct for the task.
     845             :  *      @inode contains the inode structure for the inode.
     846             :  *
     847             :  * Security hooks for Netlink messaging.
     848             :  *
     849             :  * @netlink_send:
     850             :  *      Save security information for a netlink message so that permission
     851             :  *      checking can be performed when the message is processed.  The security
     852             :  *      information can be saved using the eff_cap field of the
     853             :  *      netlink_skb_parms structure.  Also may be used to provide fine
     854             :  *      grained control over message transmission.
     855             :  *      @sk associated sock of task sending the message.,
     856             :  *      @skb contains the sk_buff structure for the netlink message.
     857             :  *      Return 0 if the information was successfully saved and message
     858             :  *      is allowed to be transmitted.
     859             :  * @netlink_recv:
     860             :  *      Check permission before processing the received netlink message in
     861             :  *      @skb.
     862             :  *      @skb contains the sk_buff structure for the netlink message.
     863             :  *      @cap indicates the capability required
     864             :  *      Return 0 if permission is granted.
     865             :  *
     866             :  * Security hooks for Unix domain networking.
     867             :  *
     868             :  * @unix_stream_connect:
     869             :  *      Check permissions before establishing a Unix domain stream connection
     870             :  *      between @sock and @other.
     871             :  *      @sock contains the socket structure.
     872             :  *      @other contains the peer socket structure.
     873             :  *      Return 0 if permission is granted.
     874             :  * @unix_may_send:
     875             :  *      Check permissions before connecting or sending datagrams from @sock to
     876             :  *      @other.
     877             :  *      @sock contains the socket structure.
     878             :  *      @sock contains the peer socket structure.
     879             :  *      Return 0 if permission is granted.
     880             :  *
     881             :  * The @unix_stream_connect and @unix_may_send hooks were necessary because
     882             :  * Linux provides an alternative to the conventional file name space for Unix
     883             :  * domain sockets.  Whereas binding and connecting to sockets in the file name
     884             :  * space is mediated by the typical file permissions (and caught by the mknod
     885             :  * and permission hooks in inode_security_ops), binding and connecting to
     886             :  * sockets in the abstract name space is completely unmediated.  Sufficient
     887             :  * control of Unix domain sockets in the abstract name space isn't possible
     888             :  * using only the socket layer hooks, since we need to know the actual target
     889             :  * socket, which is not looked up until we are inside the af_unix code.
     890             :  *
     891             :  * Security hooks for socket operations.
     892             :  *
     893             :  * @socket_create:
     894             :  *      Check permissions prior to creating a new socket.
     895             :  *      @family contains the requested protocol family.
     896             :  *      @type contains the requested communications type.
     897             :  *      @protocol contains the requested protocol.
     898             :  *      @kern set to 1 if a kernel socket.
     899             :  *      Return 0 if permission is granted.
     900             :  * @socket_post_create:
     901             :  *      This hook allows a module to update or allocate a per-socket security
     902             :  *      structure. Note that the security field was not added directly to the
     903             :  *      socket structure, but rather, the socket security information is stored
     904             :  *      in the associated inode.  Typically, the inode alloc_security hook will
     905             :  *      allocate and and attach security information to
     906             :  *      sock->inode->i_security.  This hook may be used to update the
     907             :  *      sock->inode->i_security field with additional information that wasn't
     908             :  *      available when the inode was allocated.
     909             :  *      @sock contains the newly created socket structure.
     910             :  *      @family contains the requested protocol family.
     911             :  *      @type contains the requested communications type.
     912             :  *      @protocol contains the requested protocol.
     913             :  *      @kern set to 1 if a kernel socket.
     914             :  * @socket_bind:
     915             :  *      Check permission before socket protocol layer bind operation is
     916             :  *      performed and the socket @sock is bound to the address specified in the
     917             :  *      @address parameter.
     918             :  *      @sock contains the socket structure.
     919             :  *      @address contains the address to bind to.
     920             :  *      @addrlen contains the length of address.
     921             :  *      Return 0 if permission is granted.
     922             :  * @socket_connect:
     923             :  *      Check permission before socket protocol layer connect operation
     924             :  *      attempts to connect socket @sock to a remote address, @address.
     925             :  *      @sock contains the socket structure.
     926             :  *      @address contains the address of remote endpoint.
     927             :  *      @addrlen contains the length of address.
     928             :  *      Return 0 if permission is granted.
     929             :  * @socket_listen:
     930             :  *      Check permission before socket protocol layer listen operation.
     931             :  *      @sock contains the socket structure.
     932             :  *      @backlog contains the maximum length for the pending connection queue.
     933             :  *      Return 0 if permission is granted.
     934             :  * @socket_accept:
     935             :  *      Check permission before accepting a new connection.  Note that the new
     936             :  *      socket, @newsock, has been created and some information copied to it,
     937             :  *      but the accept operation has not actually been performed.
     938             :  *      @sock contains the listening socket structure.
     939             :  *      @newsock contains the newly created server socket for connection.
     940             :  *      Return 0 if permission is granted.
     941             :  * @socket_sendmsg:
     942             :  *      Check permission before transmitting a message to another socket.
     943             :  *      @sock contains the socket structure.
     944             :  *      @msg contains the message to be transmitted.
     945             :  *      @size contains the size of message.
     946             :  *      Return 0 if permission is granted.
     947             :  * @socket_recvmsg:
     948             :  *      Check permission before receiving a message from a socket.
     949             :  *      @sock contains the socket structure.
     950             :  *      @msg contains the message structure.
     951             :  *      @size contains the size of message structure.
     952             :  *      @flags contains the operational flags.
     953             :  *      Return 0 if permission is granted.
     954             :  * @socket_getsockname:
     955             :  *      Check permission before the local address (name) of the socket object
     956             :  *      @sock is retrieved.
     957             :  *      @sock contains the socket structure.
     958             :  *      Return 0 if permission is granted.
     959             :  * @socket_getpeername:
     960             :  *      Check permission before the remote address (name) of a socket object
     961             :  *      @sock is retrieved.
     962             :  *      @sock contains the socket structure.
     963             :  *      Return 0 if permission is granted.
     964             :  * @socket_getsockopt:
     965             :  *      Check permissions before retrieving the options associated with socket
     966             :  *      @sock.
     967             :  *      @sock contains the socket structure.
     968             :  *      @level contains the protocol level to retrieve option from.
     969             :  *      @optname contains the name of option to retrieve.
     970             :  *      Return 0 if permission is granted.
     971             :  * @socket_setsockopt:
     972             :  *      Check permissions before setting the options associated with socket
     973             :  *      @sock.
     974             :  *      @sock contains the socket structure.
     975             :  *      @level contains the protocol level to set options for.
     976             :  *      @optname contains the name of the option to set.
     977             :  *      Return 0 if permission is granted.
     978             :  * @socket_shutdown:
     979             :  *      Checks permission before all or part of a connection on the socket
     980             :  *      @sock is shut down.
     981             :  *      @sock contains the socket structure.
     982             :  *      @how contains the flag indicating how future sends and receives are handled.
     983             :  *      Return 0 if permission is granted.
     984             :  * @socket_sock_rcv_skb:
     985             :  *      Check permissions on incoming network packets.  This hook is distinct
     986             :  *      from Netfilter's IP input hooks since it is the first time that the
     987             :  *      incoming sk_buff @skb has been associated with a particular socket, @sk.
     988             :  *      @sk contains the sock (not socket) associated with the incoming sk_buff.
     989             :  *      @skb contains the incoming network data.
     990             :  * @socket_getpeersec_stream:
     991             :  *      This hook allows the security module to provide peer socket security
     992             :  *      state for unix or connected tcp sockets to userspace via getsockopt
     993             :  *      SO_GETPEERSEC.  For tcp sockets this can be meaningful if the
     994             :  *      socket is associated with an ipsec SA.
     995             :  *      @sock is the local socket.
     996             :  *      @optval userspace memory where the security state is to be copied.
     997             :  *      @optlen userspace int where the module should copy the actual length
     998             :  *      of the security state.
     999             :  *      @len as input is the maximum length to copy to userspace provided
    1000             :  *      by the caller.
    1001             :  *      Return 0 if all is well, otherwise, typical getsockopt return
    1002             :  *      values.
    1003             :  * @socket_getpeersec_dgram:
    1004             :  *      This hook allows the security module to provide peer socket security
    1005             :  *      state for udp sockets on a per-packet basis to userspace via
    1006             :  *      getsockopt SO_GETPEERSEC.  The application must first have indicated
    1007             :  *      the IP_PASSSEC option via getsockopt.  It can then retrieve the
    1008             :  *      security state returned by this hook for a packet via the SCM_SECURITY
    1009             :  *      ancillary message type.
    1010             :  *      @skb is the skbuff for the packet being queried
    1011             :  *      @secdata is a pointer to a buffer in which to copy the security data
    1012             :  *      @seclen is the maximum length for @secdata
    1013             :  *      Return 0 on success, error on failure.
    1014             :  * @sk_alloc_security:
    1015             :  *      Allocate and attach a security structure to the sk->sk_security field,
    1016             :  *      which is used to copy security attributes between local stream sockets.
    1017             :  * @sk_free_security:
    1018             :  *      Deallocate security structure.
    1019             :  * @sk_clone_security:
    1020             :  *      Clone/copy security structure.
    1021             :  * @sk_getsecid:
    1022             :  *      Retrieve the LSM-specific secid for the sock to enable caching of network
    1023             :  *      authorizations.
    1024             :  * @sock_graft:
    1025             :  *      Sets the socket's isec sid to the sock's sid.
    1026             :  * @inet_conn_request:
    1027             :  *      Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
    1028             :  * @inet_csk_clone:
    1029             :  *      Sets the new child socket's sid to the openreq sid.
    1030             :  * @inet_conn_established:
    1031             :  *      Sets the connection's peersid to the secmark on skb.
    1032             :  * @req_classify_flow:
    1033             :  *      Sets the flow's sid to the openreq sid.
    1034             :  * @tun_dev_create:
    1035             :  *      Check permissions prior to creating a new TUN device.
    1036             :  * @tun_dev_post_create:
    1037             :  *      This hook allows a module to update or allocate a per-socket security
    1038             :  *      structure.
    1039             :  *      @sk contains the newly created sock structure.
    1040             :  * @tun_dev_attach:
    1041             :  *      Check permissions prior to attaching to a persistent TUN device.  This
    1042             :  *      hook can also be used by the module to update any security state
    1043             :  *      associated with the TUN device's sock structure.
    1044             :  *      @sk contains the existing sock structure.
    1045             :  *
    1046             :  * Security hooks for XFRM operations.
    1047             :  *
    1048             :  * @xfrm_policy_alloc_security:
    1049             :  *      @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
    1050             :  *      Database used by the XFRM system.
    1051             :  *      @sec_ctx contains the security context information being provided by
    1052             :  *      the user-level policy update program (e.g., setkey).
    1053             :  *      Allocate a security structure to the xp->security field; the security
    1054             :  *      field is initialized to NULL when the xfrm_policy is allocated.
    1055             :  *      Return 0 if operation was successful (memory to allocate, legal context)
    1056             :  * @xfrm_policy_clone_security:
    1057             :  *      @old_ctx contains an existing xfrm_sec_ctx.
    1058             :  *      @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
    1059             :  *      Allocate a security structure in new_ctxp that contains the
    1060             :  *      information from the old_ctx structure.
    1061             :  *      Return 0 if operation was successful (memory to allocate).
    1062             :  * @xfrm_policy_free_security:
    1063             :  *      @ctx contains the xfrm_sec_ctx
    1064             :  *      Deallocate xp->security.
    1065             :  * @xfrm_policy_delete_security:
    1066             :  *      @ctx contains the xfrm_sec_ctx.
    1067             :  *      Authorize deletion of xp->security.
    1068             :  * @xfrm_state_alloc_security:
    1069             :  *      @x contains the xfrm_state being added to the Security Association
    1070             :  *      Database by the XFRM system.
    1071             :  *      @sec_ctx contains the security context information being provided by
    1072             :  *      the user-level SA generation program (e.g., setkey or racoon).
    1073             :  *      @secid contains the secid from which to take the mls portion of the context.
    1074             :  *      Allocate a security structure to the x->security field; the security
    1075             :  *      field is initialized to NULL when the xfrm_state is allocated. Set the
    1076             :  *      context to correspond to either sec_ctx or polsec, with the mls portion
    1077             :  *      taken from secid in the latter case.
    1078             :  *      Return 0 if operation was successful (memory to allocate, legal context).
    1079             :  * @xfrm_state_free_security:
    1080             :  *      @x contains the xfrm_state.
    1081             :  *      Deallocate x->security.
    1082             :  * @xfrm_state_delete_security:
    1083             :  *      @x contains the xfrm_state.
    1084             :  *      Authorize deletion of x->security.
    1085             :  * @xfrm_policy_lookup:
    1086             :  *      @ctx contains the xfrm_sec_ctx for which the access control is being
    1087             :  *      checked.
    1088             :  *      @fl_secid contains the flow security label that is used to authorize
    1089             :  *      access to the policy xp.
    1090             :  *      @dir contains the direction of the flow (input or output).
    1091             :  *      Check permission when a flow selects a xfrm_policy for processing
    1092             :  *      XFRMs on a packet.  The hook is called when selecting either a
    1093             :  *      per-socket policy or a generic xfrm policy.
    1094             :  *      Return 0 if permission is granted, -ESRCH otherwise, or -errno
    1095             :  *      on other errors.
    1096             :  * @xfrm_state_pol_flow_match:
    1097             :  *      @x contains the state to match.
    1098             :  *      @xp contains the policy to check for a match.
    1099             :  *      @fl contains the flow to check for a match.
    1100             :  *      Return 1 if there is a match.
    1101             :  * @xfrm_decode_session:
    1102             :  *      @skb points to skb to decode.
    1103             :  *      @secid points to the flow key secid to set.
    1104             :  *      @ckall says if all xfrms used should be checked for same secid.
    1105             :  *      Return 0 if ckall is zero or all xfrms used have the same secid.
    1106             :  *
    1107             :  * Security hooks affecting all Key Management operations
    1108             :  *
    1109             :  * @key_alloc:
    1110             :  *      Permit allocation of a key and assign security data. Note that key does
    1111             :  *      not have a serial number assigned at this point.
    1112             :  *      @key points to the key.
    1113             :  *      @flags is the allocation flags
    1114             :  *      Return 0 if permission is granted, -ve error otherwise.
    1115             :  * @key_free:
    1116             :  *      Notification of destruction; free security data.
    1117             :  *      @key points to the key.
    1118             :  *      No return value.
    1119             :  * @key_permission:
    1120             :  *      See whether a specific operational right is granted to a process on a
    1121             :  *      key.
    1122             :  *      @key_ref refers to the key (key pointer + possession attribute bit).
    1123             :  *      @cred points to the credentials to provide the context against which to
    1124             :  *      evaluate the security data on the key.
    1125             :  *      @perm describes the combination of permissions required of this key.
    1126             :  *      Return 1 if permission granted, 0 if permission denied and -ve it the
    1127             :  *      normal permissions model should be effected.
    1128             :  * @key_getsecurity:
    1129             :  *      Get a textual representation of the security context attached to a key
    1130             :  *      for the purposes of honouring KEYCTL_GETSECURITY.  This function
    1131             :  *      allocates the storage for the NUL-terminated string and the caller
    1132             :  *      should free it.
    1133             :  *      @key points to the key to be queried.
    1134             :  *      @_buffer points to a pointer that should be set to point to the
    1135             :  *       resulting string (if no label or an error occurs).
    1136             :  *      Return the length of the string (including terminating NUL) or -ve if
    1137             :  *      an error.
    1138             :  *      May also return 0 (and a NULL buffer pointer) if there is no label.
    1139             :  * @key_session_to_parent:
    1140             :  *      Forcibly assign the session keyring from a process to its parent
    1141             :  *      process.
    1142             :  *      @cred: Pointer to process's credentials
    1143             :  *      @parent_cred: Pointer to parent process's credentials
    1144             :  *      @keyring: Proposed new session keyring
    1145             :  *      Return 0 if permission is granted, -ve error otherwise.
    1146             :  *
    1147             :  * Security hooks affecting all System V IPC operations.
    1148             :  *
    1149             :  * @ipc_permission:
    1150             :  *      Check permissions for access to IPC
    1151             :  *      @ipcp contains the kernel IPC permission structure
    1152             :  *      @flag contains the desired (requested) permission set
    1153             :  *      Return 0 if permission is granted.
    1154             :  * @ipc_getsecid:
    1155             :  *      Get the secid associated with the ipc object.
    1156             :  *      @ipcp contains the kernel IPC permission structure.
    1157             :  *      @secid contains a pointer to the location where result will be saved.
    1158             :  *      In case of failure, @secid will be set to zero.
    1159             :  *
    1160             :  * Security hooks for individual messages held in System V IPC message queues
    1161             :  * @msg_msg_alloc_security:
    1162             :  *      Allocate and attach a security structure to the msg->security field.
    1163             :  *      The security field is initialized to NULL when the structure is first
    1164             :  *      created.
    1165             :  *      @msg contains the message structure to be modified.
    1166             :  *      Return 0 if operation was successful and permission is granted.
    1167             :  * @msg_msg_free_security:
    1168             :  *      Deallocate the security structure for this message.
    1169             :  *      @msg contains the message structure to be modified.
    1170             :  *
    1171             :  * Security hooks for System V IPC Message Queues
    1172             :  *
    1173             :  * @msg_queue_alloc_security:
    1174             :  *      Allocate and attach a security structure to the
    1175             :  *      msq->q_perm.security field. The security field is initialized to
    1176             :  *      NULL when the structure is first created.
    1177             :  *      @msq contains the message queue structure to be modified.
    1178             :  *      Return 0 if operation was successful and permission is granted.
    1179             :  * @msg_queue_free_security:
    1180             :  *      Deallocate security structure for this message queue.
    1181             :  *      @msq contains the message queue structure to be modified.
    1182             :  * @msg_queue_associate:
    1183             :  *      Check permission when a message queue is requested through the
    1184             :  *      msgget system call.  This hook is only called when returning the
    1185             :  *      message queue identifier for an existing message queue, not when a
    1186             :  *      new message queue is created.
    1187             :  *      @msq contains the message queue to act upon.
    1188             :  *      @msqflg contains the operation control flags.
    1189             :  *      Return 0 if permission is granted.
    1190             :  * @msg_queue_msgctl:
    1191             :  *      Check permission when a message control operation specified by @cmd
    1192             :  *      is to be performed on the message queue @msq.
    1193             :  *      The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
    1194             :  *      @msq contains the message queue to act upon.  May be NULL.
    1195             :  *      @cmd contains the operation to be performed.
    1196             :  *      Return 0 if permission is granted.
    1197             :  * @msg_queue_msgsnd:
    1198             :  *      Check permission before a message, @msg, is enqueued on the message
    1199             :  *      queue, @msq.
    1200             :  *      @msq contains the message queue to send message to.
    1201             :  *      @msg contains the message to be enqueued.
    1202             :  *      @msqflg contains operational flags.
    1203             :  *      Return 0 if permission is granted.
    1204             :  * @msg_queue_msgrcv:
    1205             :  *      Check permission before a message, @msg, is removed from the message
    1206             :  *      queue, @msq.  The @target task structure contains a pointer to the
    1207             :  *      process that will be receiving the message (not equal to the current
    1208             :  *      process when inline receives are being performed).
    1209             :  *      @msq contains the message queue to retrieve message from.
    1210             :  *      @msg contains the message destination.
    1211             :  *      @target contains the task structure for recipient process.
    1212             :  *      @type contains the type of message requested.
    1213             :  *      @mode contains the operational flags.
    1214             :  *      Return 0 if permission is granted.
    1215             :  *
    1216             :  * Security hooks for System V Shared Memory Segments
    1217             :  *
    1218             :  * @shm_alloc_security:
    1219             :  *      Allocate and attach a security structure to the shp->shm_perm.security
    1220             :  *      field.  The security field is initialized to NULL when the structure is
    1221             :  *      first created.
    1222             :  *      @shp contains the shared memory structure to be modified.
    1223             :  *      Return 0 if operation was successful and permission is granted.
    1224             :  * @shm_free_security:
    1225             :  *      Deallocate the security struct for this memory segment.
    1226             :  *      @shp contains the shared memory structure to be modified.
    1227             :  * @shm_associate:
    1228             :  *      Check permission when a shared memory region is requested through the
    1229             :  *      shmget system call.  This hook is only called when returning the shared
    1230             :  *      memory region identifier for an existing region, not when a new shared
    1231             :  *      memory region is created.
    1232             :  *      @shp contains the shared memory structure to be modified.
    1233             :  *      @shmflg contains the operation control flags.
    1234             :  *      Return 0 if permission is granted.
    1235             :  * @shm_shmctl:
    1236             :  *      Check permission when a shared memory control operation specified by
    1237             :  *      @cmd is to be performed on the shared memory region @shp.
    1238             :  *      The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
    1239             :  *      @shp contains shared memory structure to be modified.
    1240             :  *      @cmd contains the operation to be performed.
    1241             :  *      Return 0 if permission is granted.
    1242             :  * @shm_shmat:
    1243             :  *      Check permissions prior to allowing the shmat system call to attach the
    1244             :  *      shared memory segment @shp to the data segment of the calling process.
    1245             :  *      The attaching address is specified by @shmaddr.
    1246             :  *      @shp contains the shared memory structure to be modified.
    1247             :  *      @shmaddr contains the address to attach memory region to.
    1248             :  *      @shmflg contains the operational flags.
    1249             :  *      Return 0 if permission is granted.
    1250             :  *
    1251             :  * Security hooks for System V Semaphores
    1252             :  *
    1253             :  * @sem_alloc_security:
    1254             :  *      Allocate and attach a security structure to the sma->sem_perm.security
    1255             :  *      field.  The security field is initialized to NULL when the structure is
    1256             :  *      first created.
    1257             :  *      @sma contains the semaphore structure
    1258             :  *      Return 0 if operation was successful and permission is granted.
    1259             :  * @sem_free_security:
    1260             :  *      deallocate security struct for this semaphore
    1261             :  *      @sma contains the semaphore structure.
    1262             :  * @sem_associate:
    1263             :  *      Check permission when a semaphore is requested through the semget
    1264             :  *      system call.  This hook is only called when returning the semaphore
    1265             :  *      identifier for an existing semaphore, not when a new one must be
    1266             :  *      created.
    1267             :  *      @sma contains the semaphore structure.
    1268             :  *      @semflg contains the operation control flags.
    1269             :  *      Return 0 if permission is granted.
    1270             :  * @sem_semctl:
    1271             :  *      Check permission when a semaphore operation specified by @cmd is to be
    1272             :  *      performed on the semaphore @sma.  The @sma may be NULL, e.g. for
    1273             :  *      IPC_INFO or SEM_INFO.
    1274             :  *      @sma contains the semaphore structure.  May be NULL.
    1275             :  *      @cmd contains the operation to be performed.
    1276             :  *      Return 0 if permission is granted.
    1277             :  * @sem_semop
    1278             :  *      Check permissions before performing operations on members of the
    1279             :  *      semaphore set @sma.  If the @alter flag is nonzero, the semaphore set
    1280             :  *      may be modified.
    1281             :  *      @sma contains the semaphore structure.
    1282             :  *      @sops contains the operations to perform.
    1283             :  *      @nsops contains the number of operations to perform.
    1284             :  *      @alter contains the flag indicating whether changes are to be made.
    1285             :  *      Return 0 if permission is granted.
    1286             :  *
    1287             :  * @ptrace_access_check:
    1288             :  *      Check permission before allowing the current process to trace the
    1289             :  *      @child process.
    1290             :  *      Security modules may also want to perform a process tracing check
    1291             :  *      during an execve in the set_security or apply_creds hooks of
    1292             :  *      tracing check during an execve in the bprm_set_creds hook of
    1293             :  *      binprm_security_ops if the process is being traced and its security
    1294             :  *      attributes would be changed by the execve.
    1295             :  *      @child contains the task_struct structure for the target process.
    1296             :  *      @mode contains the PTRACE_MODE flags indicating the form of access.
    1297             :  *      Return 0 if permission is granted.
    1298             :  * @ptrace_traceme:
    1299             :  *      Check that the @parent process has sufficient permission to trace the
    1300             :  *      current process before allowing the current process to present itself
    1301             :  *      to the @parent process for tracing.
    1302             :  *      The parent process will still have to undergo the ptrace_access_check
    1303             :  *      checks before it is allowed to trace this one.
    1304             :  *      @parent contains the task_struct structure for debugger process.
    1305             :  *      Return 0 if permission is granted.
    1306             :  * @capget:
    1307             :  *      Get the @effective, @inheritable, and @permitted capability sets for
    1308             :  *      the @target process.  The hook may also perform permission checking to
    1309             :  *      determine if the current process is allowed to see the capability sets
    1310             :  *      of the @target process.
    1311             :  *      @target contains the task_struct structure for target process.
    1312             :  *      @effective contains the effective capability set.
    1313             :  *      @inheritable contains the inheritable capability set.
    1314             :  *      @permitted contains the permitted capability set.
    1315             :  *      Return 0 if the capability sets were successfully obtained.
    1316             :  * @capset:
    1317             :  *      Set the @effective, @inheritable, and @permitted capability sets for
    1318             :  *      the current process.
    1319             :  *      @new contains the new credentials structure for target process.
    1320             :  *      @old contains the current credentials structure for target process.
    1321             :  *      @effective contains the effective capability set.
    1322             :  *      @inheritable contains the inheritable capability set.
    1323             :  *      @permitted contains the permitted capability set.
    1324             :  *      Return 0 and update @new if permission is granted.
    1325             :  * @capable:
    1326             :  *      Check whether the @tsk process has the @cap capability in the indicated
    1327             :  *      credentials.
    1328             :  *      @tsk contains the task_struct for the process.
    1329             :  *      @cred contains the credentials to use.
    1330             :  *      @cap contains the capability <include/linux/capability.h>.
    1331             :  *      @audit: Whether to write an audit message or not
    1332             :  *      Return 0 if the capability is granted for @tsk.
    1333             :  * @acct:
    1334             :  *      Check permission before enabling or disabling process accounting.  If
    1335             :  *      accounting is being enabled, then @file refers to the open file used to
    1336             :  *      store accounting records.  If accounting is being disabled, then @file
    1337             :  *      is NULL.
    1338             :  *      @file contains the file structure for the accounting file (may be NULL).
    1339             :  *      Return 0 if permission is granted.
    1340             :  * @sysctl:
    1341             :  *      Check permission before accessing the @table sysctl variable in the
    1342             :  *      manner specified by @op.
    1343             :  *      @table contains the ctl_table structure for the sysctl variable.
    1344             :  *      @op contains the operation (001 = search, 002 = write, 004 = read).
    1345             :  *      Return 0 if permission is granted.
    1346             :  * @syslog:
    1347             :  *      Check permission before accessing the kernel message ring or changing
    1348             :  *      logging to the console.
    1349             :  *      See the syslog(2) manual page for an explanation of the @type values.
    1350             :  *      @type contains the type of action.
    1351             :  *      Return 0 if permission is granted.
    1352             :  * @settime:
    1353             :  *      Check permission to change the system time.
    1354             :  *      struct timespec and timezone are defined in include/linux/time.h
    1355             :  *      @ts contains new time
    1356             :  *      @tz contains new timezone
    1357             :  *      Return 0 if permission is granted.
    1358             :  * @vm_enough_memory:
    1359             :  *      Check permissions for allocating a new virtual mapping.
    1360             :  *      @mm contains the mm struct it is being added to.
    1361             :  *      @pages contains the number of pages.
    1362             :  *      Return 0 if permission is granted.
    1363             :  *
    1364             :  * @secid_to_secctx:
    1365             :  *      Convert secid to security context.
    1366             :  *      @secid contains the security ID.
    1367             :  *      @secdata contains the pointer that stores the converted security context.
    1368             :  * @secctx_to_secid:
    1369             :  *      Convert security context to secid.
    1370             :  *      @secid contains the pointer to the generated security ID.
    1371             :  *      @secdata contains the security context.
    1372             :  *
    1373             :  * @release_secctx:
    1374             :  *      Release the security context.
    1375             :  *      @secdata contains the security context.
    1376             :  *      @seclen contains the length of the security context.
    1377             :  *
    1378             :  * Security hooks for Audit
    1379             :  *
    1380             :  * @audit_rule_init:
    1381             :  *      Allocate and initialize an LSM audit rule structure.
    1382             :  *      @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
    1383             :  *      @op contains the operator the rule uses.
    1384             :  *      @rulestr contains the context where the rule will be applied to.
    1385             :  *      @lsmrule contains a pointer to receive the result.
    1386             :  *      Return 0 if @lsmrule has been successfully set,
    1387             :  *      -EINVAL in case of an invalid rule.
    1388             :  *
    1389             :  * @audit_rule_known:
    1390             :  *      Specifies whether given @rule contains any fields related to current LSM.
    1391             :  *      @rule contains the audit rule of interest.
    1392             :  *      Return 1 in case of relation found, 0 otherwise.
    1393             :  *
    1394             :  * @audit_rule_match:
    1395             :  *      Determine if given @secid matches a rule previously approved
    1396             :  *      by @audit_rule_known.
    1397             :  *      @secid contains the security id in question.
    1398             :  *      @field contains the field which relates to current LSM.
    1399             :  *      @op contains the operator that will be used for matching.
    1400             :  *      @rule points to the audit rule that will be checked against.
    1401             :  *      @actx points to the audit context associated with the check.
    1402             :  *      Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
    1403             :  *
    1404             :  * @audit_rule_free:
    1405             :  *      Deallocate the LSM audit rule structure previously allocated by
    1406             :  *      audit_rule_init.
    1407             :  *      @rule contains the allocated rule
    1408             :  *
    1409             :  * @inode_notifysecctx:
    1410             :  *      Notify the security module of what the security context of an inode
    1411             :  *      should be.  Initializes the incore security context managed by the
    1412             :  *      security module for this inode.  Example usage:  NFS client invokes
    1413             :  *      this hook to initialize the security context in its incore inode to the
    1414             :  *      value provided by the server for the file when the server returned the
    1415             :  *      file's attributes to the client.
    1416             :  *
    1417             :  *      Must be called with inode->i_mutex locked.
    1418             :  *
    1419             :  *      @inode we wish to set the security context of.
    1420             :  *      @ctx contains the string which we wish to set in the inode.
    1421             :  *      @ctxlen contains the length of @ctx.
    1422             :  *
    1423             :  * @inode_setsecctx:
    1424             :  *      Change the security context of an inode.  Updates the
    1425             :  *      incore security context managed by the security module and invokes the
    1426             :  *      fs code as needed (via __vfs_setxattr_noperm) to update any backing
    1427             :  *      xattrs that represent the context.  Example usage:  NFS server invokes
    1428             :  *      this hook to change the security context in its incore inode and on the
    1429             :  *      backing filesystem to a value provided by the client on a SETATTR
    1430             :  *      operation.
    1431             :  *
    1432             :  *      Must be called with inode->i_mutex locked.
    1433             :  *
    1434             :  *      @dentry contains the inode we wish to set the security context of.
    1435             :  *      @ctx contains the string which we wish to set in the inode.
    1436             :  *      @ctxlen contains the length of @ctx.
    1437             :  *
    1438             :  * @inode_getsecctx:
    1439             :  *      Returns a string containing all relavent security context information
    1440             :  *
    1441             :  *      @inode we wish to set the security context of.
    1442             :  *      @ctx is a pointer in which to place the allocated security context.
    1443             :  *      @ctxlen points to the place to put the length of @ctx.
    1444             :  * This is the main security structure.
    1445             :  */
    1446             : struct security_operations {
    1447             :         char name[SECURITY_NAME_MAX + 1];
    1448             : 
    1449             :         int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
    1450             :         int (*ptrace_traceme) (struct task_struct *parent);
    1451             :         int (*capget) (struct task_struct *target,
    1452             :                        kernel_cap_t *effective,
    1453             :                        kernel_cap_t *inheritable, kernel_cap_t *permitted);
    1454             :         int (*capset) (struct cred *new,
    1455             :                        const struct cred *old,
    1456             :                        const kernel_cap_t *effective,
    1457             :                        const kernel_cap_t *inheritable,
    1458             :                        const kernel_cap_t *permitted);
    1459             :         int (*capable) (struct task_struct *tsk, const struct cred *cred,
    1460             :                         int cap, int audit);
    1461             :         int (*acct) (struct file *file);
    1462             :         int (*sysctl) (struct ctl_table *table, int op);
    1463             :         int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
    1464             :         int (*quota_on) (struct dentry *dentry);
    1465             :         int (*syslog) (int type);
    1466             :         int (*settime) (struct timespec *ts, struct timezone *tz);
    1467             :         int (*vm_enough_memory) (struct mm_struct *mm, long pages);
    1468             : 
    1469             :         int (*bprm_set_creds) (struct linux_binprm *bprm);
    1470             :         int (*bprm_check_security) (struct linux_binprm *bprm);
    1471             :         int (*bprm_secureexec) (struct linux_binprm *bprm);
    1472             :         void (*bprm_committing_creds) (struct linux_binprm *bprm);
    1473             :         void (*bprm_committed_creds) (struct linux_binprm *bprm);
    1474             : 
    1475             :         int (*sb_alloc_security) (struct super_block *sb);
    1476             :         void (*sb_free_security) (struct super_block *sb);
    1477             :         int (*sb_copy_data) (char *orig, char *copy);
    1478             :         int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
    1479             :         int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
    1480             :         int (*sb_statfs) (struct dentry *dentry);
    1481             :         int (*sb_mount) (char *dev_name, struct path *path,
    1482             :                          char *type, unsigned long flags, void *data);
    1483             :         int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
    1484             :         int (*sb_umount) (struct vfsmount *mnt, int flags);
    1485             :         void (*sb_umount_close) (struct vfsmount *mnt);
    1486             :         void (*sb_umount_busy) (struct vfsmount *mnt);
    1487             :         void (*sb_post_remount) (struct vfsmount *mnt,
    1488             :                                  unsigned long flags, void *data);
    1489             :         void (*sb_post_addmount) (struct vfsmount *mnt,
    1490             :                                   struct path *mountpoint);
    1491             :         int (*sb_pivotroot) (struct path *old_path,
    1492             :                              struct path *new_path);
    1493             :         void (*sb_post_pivotroot) (struct path *old_path,
    1494             :                                    struct path *new_path);
    1495             :         int (*sb_set_mnt_opts) (struct super_block *sb,
    1496             :                                 struct security_mnt_opts *opts);
    1497             :         void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
    1498             :                                    struct super_block *newsb);
    1499             :         int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
    1500             : 
    1501             : #ifdef CONFIG_SECURITY_PATH
    1502             :         int (*path_unlink) (struct path *dir, struct dentry *dentry);
    1503             :         int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
    1504             :         int (*path_rmdir) (struct path *dir, struct dentry *dentry);
    1505             :         int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
    1506             :                            unsigned int dev);
    1507             :         int (*path_truncate) (struct path *path, loff_t length,
    1508             :                               unsigned int time_attrs);
    1509             :         int (*path_symlink) (struct path *dir, struct dentry *dentry,
    1510             :                              const char *old_name);
    1511             :         int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
    1512             :                           struct dentry *new_dentry);
    1513             :         int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
    1514             :                             struct path *new_dir, struct dentry *new_dentry);
    1515             :         int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
    1516             :                            mode_t mode);
    1517             :         int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
    1518             :         int (*path_chroot) (struct path *path);
    1519             : #endif
    1520             : 
    1521             :         int (*inode_alloc_security) (struct inode *inode);
    1522             :         void (*inode_free_security) (struct inode *inode);
    1523             :         int (*inode_init_security) (struct inode *inode, struct inode *dir,
    1524             :                                     char **name, void **value, size_t *len);
    1525             :         int (*inode_create) (struct inode *dir,
    1526             :                              struct dentry *dentry, int mode);
    1527             :         int (*inode_link) (struct dentry *old_dentry,
    1528             :                            struct inode *dir, struct dentry *new_dentry);
    1529             :         int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
    1530             :         int (*inode_symlink) (struct inode *dir,
    1531             :                               struct dentry *dentry, const char *old_name);
    1532             :         int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
    1533             :         int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
    1534             :         int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
    1535             :                             int mode, dev_t dev);
    1536             :         int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
    1537             :                              struct inode *new_dir, struct dentry *new_dentry);
    1538             :         int (*inode_readlink) (struct dentry *dentry);
    1539             :         int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
    1540             :         int (*inode_permission) (struct inode *inode, int mask);
    1541             :         int (*inode_setattr)    (struct dentry *dentry, struct iattr *attr);
    1542             :         int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
    1543             :         void (*inode_delete) (struct inode *inode);
    1544             :         int (*inode_setxattr) (struct dentry *dentry, const char *name,
    1545             :                                const void *value, size_t size, int flags);
    1546             :         void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
    1547             :                                      const void *value, size_t size, int flags);
    1548             :         int (*inode_getxattr) (struct dentry *dentry, const char *name);
    1549             :         int (*inode_listxattr) (struct dentry *dentry);
    1550             :         int (*inode_removexattr) (struct dentry *dentry, const char *name);
    1551             :         int (*inode_need_killpriv) (struct dentry *dentry);
    1552             :         int (*inode_killpriv) (struct dentry *dentry);
    1553             :         int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
    1554             :         int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
    1555             :         int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
    1556             :         void (*inode_getsecid) (const struct inode *inode, u32 *secid);
    1557             : 
    1558             :         int (*file_permission) (struct file *file, int mask);
    1559             :         int (*file_alloc_security) (struct file *file);
    1560             :         void (*file_free_security) (struct file *file);
    1561             :         int (*file_ioctl) (struct file *file, unsigned int cmd,
    1562             :                            unsigned long arg);
    1563             :         int (*file_mmap) (struct file *file,
    1564             :                           unsigned long reqprot, unsigned long prot,
    1565             :                           unsigned long flags, unsigned long addr,
    1566             :                           unsigned long addr_only);
    1567             :         int (*file_mprotect) (struct vm_area_struct *vma,
    1568             :                               unsigned long reqprot,
    1569             :                               unsigned long prot);
    1570             :         int (*file_lock) (struct file *file, unsigned int cmd);
    1571             :         int (*file_fcntl) (struct file *file, unsigned int cmd,
    1572             :                            unsigned long arg);
    1573             :         int (*file_set_fowner) (struct file *file);
    1574             :         int (*file_send_sigiotask) (struct task_struct *tsk,
    1575             :                                     struct fown_struct *fown, int sig);
    1576             :         int (*file_receive) (struct file *file);
    1577             :         int (*dentry_open) (struct file *file, const struct cred *cred);
    1578             : 
    1579             :         int (*task_create) (unsigned long clone_flags);
    1580             :         int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
    1581             :         void (*cred_free) (struct cred *cred);
    1582             :         int (*cred_prepare)(struct cred *new, const struct cred *old,
    1583             :                             gfp_t gfp);
    1584             :         void (*cred_commit)(struct cred *new, const struct cred *old);
    1585             :         void (*cred_transfer)(struct cred *new, const struct cred *old);
    1586             :         int (*kernel_act_as)(struct cred *new, u32 secid);
    1587             :         int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
    1588             :         int (*kernel_module_request)(char *kmod_name);
    1589             :         int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
    1590             :         int (*task_fix_setuid) (struct cred *new, const struct cred *old,
    1591             :                                 int flags);
    1592             :         int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
    1593             :         int (*task_setpgid) (struct task_struct *p, pid_t pgid);
    1594             :         int (*task_getpgid) (struct task_struct *p);
    1595             :         int (*task_getsid) (struct task_struct *p);
    1596             :         void (*task_getsecid) (struct task_struct *p, u32 *secid);
    1597             :         int (*task_setgroups) (struct group_info *group_info);
    1598             :         int (*task_setnice) (struct task_struct *p, int nice);
    1599             :         int (*task_setioprio) (struct task_struct *p, int ioprio);
    1600             :         int (*task_getioprio) (struct task_struct *p);
    1601             :         int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
    1602             :         int (*task_setscheduler) (struct task_struct *p, int policy,
    1603             :                                   struct sched_param *lp);
    1604             :         int (*task_getscheduler) (struct task_struct *p);
    1605             :         int (*task_movememory) (struct task_struct *p);
    1606             :         int (*task_kill) (struct task_struct *p,
    1607             :                           struct siginfo *info, int sig, u32 secid);
    1608             :         int (*task_wait) (struct task_struct *p);
    1609             :         int (*task_prctl) (int option, unsigned long arg2,
    1610             :                            unsigned long arg3, unsigned long arg4,
    1611             :                            unsigned long arg5);
    1612             :         void (*task_to_inode) (struct task_struct *p, struct inode *inode);
    1613             : 
    1614             :         int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
    1615             :         void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
    1616             : 
    1617             :         int (*msg_msg_alloc_security) (struct msg_msg *msg);
    1618             :         void (*msg_msg_free_security) (struct msg_msg *msg);
    1619             : 
    1620             :         int (*msg_queue_alloc_security) (struct msg_queue *msq);
    1621             :         void (*msg_queue_free_security) (struct msg_queue *msq);
    1622             :         int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
    1623             :         int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
    1624             :         int (*msg_queue_msgsnd) (struct msg_queue *msq,
    1625             :                                  struct msg_msg *msg, int msqflg);
    1626             :         int (*msg_queue_msgrcv) (struct msg_queue *msq,
    1627             :                                  struct msg_msg *msg,
    1628             :                                  struct task_struct *target,
    1629             :                                  long type, int mode);
    1630             : 
    1631             :         int (*shm_alloc_security) (struct shmid_kernel *shp);
    1632             :         void (*shm_free_security) (struct shmid_kernel *shp);
    1633             :         int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
    1634             :         int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
    1635             :         int (*shm_shmat) (struct shmid_kernel *shp,
    1636             :                           char __user *shmaddr, int shmflg);
    1637             : 
    1638             :         int (*sem_alloc_security) (struct sem_array *sma);
    1639             :         void (*sem_free_security) (struct sem_array *sma);
    1640             :         int (*sem_associate) (struct sem_array *sma, int semflg);
    1641             :         int (*sem_semctl) (struct sem_array *sma, int cmd);
    1642             :         int (*sem_semop) (struct sem_array *sma,
    1643             :                           struct sembuf *sops, unsigned nsops, int alter);
    1644             : 
    1645             :         int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
    1646             :         int (*netlink_recv) (struct sk_buff *skb, int cap);
    1647             : 
    1648             :         void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
    1649             : 
    1650             :         int (*getprocattr) (struct task_struct *p, char *name, char **value);
    1651             :         int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
    1652             :         int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
    1653             :         int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
    1654             :         void (*release_secctx) (char *secdata, u32 seclen);
    1655             : 
    1656             :         int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
    1657             :         int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
    1658             :         int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
    1659             : 
    1660             : #ifdef CONFIG_SECURITY_NETWORK
    1661             :         int (*unix_stream_connect) (struct socket *sock,
    1662             :                                     struct socket *other, struct sock *newsk);
    1663             :         int (*unix_may_send) (struct socket *sock, struct socket *other);
    1664             : 
    1665             :         int (*socket_create) (int family, int type, int protocol, int kern);
    1666             :         int (*socket_post_create) (struct socket *sock, int family,
    1667             :                                    int type, int protocol, int kern);
    1668             :         int (*socket_bind) (struct socket *sock,
    1669             :                             struct sockaddr *address, int addrlen);
    1670             :         int (*socket_connect) (struct socket *sock,
    1671             :                                struct sockaddr *address, int addrlen);
    1672             :         int (*socket_listen) (struct socket *sock, int backlog);
    1673             :         int (*socket_accept) (struct socket *sock, struct socket *newsock);
    1674             :         int (*socket_sendmsg) (struct socket *sock,
    1675             :                                struct msghdr *msg, int size);
    1676             :         int (*socket_recvmsg) (struct socket *sock,
    1677             :                                struct msghdr *msg, int size, int flags);
    1678             :         int (*socket_getsockname) (struct socket *sock);
    1679             :         int (*socket_getpeername) (struct socket *sock);
    1680             :         int (*socket_getsockopt) (struct socket *sock, int level, int optname);
    1681             :         int (*socket_setsockopt) (struct socket *sock, int level, int optname);
    1682             :         int (*socket_shutdown) (struct socket *sock, int how);
    1683             :         int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
    1684             :         int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
    1685             :         int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
    1686             :         int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
    1687             :         void (*sk_free_security) (struct sock *sk);
    1688             :         void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
    1689             :         void (*sk_getsecid) (struct sock *sk, u32 *secid);
    1690             :         void (*sock_graft) (struct sock *sk, struct socket *parent);
    1691             :         int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
    1692             :                                   struct request_sock *req);
    1693             :         void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
    1694             :         void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
    1695             :         void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
    1696             :         int (*tun_dev_create)(void);
    1697             :         void (*tun_dev_post_create)(struct sock *sk);
    1698             :         int (*tun_dev_attach)(struct sock *sk);
    1699             : #endif  /* CONFIG_SECURITY_NETWORK */
    1700             : 
    1701             : #ifdef CONFIG_SECURITY_NETWORK_XFRM
    1702             :         int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
    1703             :                         struct xfrm_user_sec_ctx *sec_ctx);
    1704             :         int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
    1705             :         void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
    1706             :         int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
    1707             :         int (*xfrm_state_alloc_security) (struct xfrm_state *x,
    1708             :                 struct xfrm_user_sec_ctx *sec_ctx,
    1709             :                 u32 secid);
    1710             :         void (*xfrm_state_free_security) (struct xfrm_state *x);
    1711             :         int (*xfrm_state_delete_security) (struct xfrm_state *x);
    1712             :         int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
    1713             :         int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
    1714             :                                           struct xfrm_policy *xp,
    1715             :                                           struct flowi *fl);
    1716             :         int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
    1717             : #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
    1718             : 
    1719             :         /* key management security hooks */
    1720             : #ifdef CONFIG_KEYS
    1721             :         int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
    1722             :         void (*key_free) (struct key *key);
    1723             :         int (*key_permission) (key_ref_t key_ref,
    1724             :                                const struct cred *cred,
    1725             :                                key_perm_t perm);
    1726             :         int (*key_getsecurity)(struct key *key, char **_buffer);
    1727             :         int (*key_session_to_parent)(const struct cred *cred,
    1728             :                                      const struct cred *parent_cred,
    1729             :                                      struct key *key);
    1730             : #endif  /* CONFIG_KEYS */
    1731             : 
    1732             : #ifdef CONFIG_AUDIT
    1733             :         int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
    1734             :         int (*audit_rule_known) (struct audit_krule *krule);
    1735             :         int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
    1736             :                                  struct audit_context *actx);
    1737             :         void (*audit_rule_free) (void *lsmrule);
    1738             : #endif /* CONFIG_AUDIT */
    1739             : };
    1740             : 
    1741             : /* prototypes */
    1742             : extern int security_init(void);
    1743             : extern int security_module_enable(struct security_operations *ops);
    1744             : extern int register_security(struct security_operations *ops);
    1745             : 
    1746             : /* Security operations */
    1747             : int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
    1748             : int security_ptrace_traceme(struct task_struct *parent);
    1749             : int security_capget(struct task_struct *target,
    1750             :                     kernel_cap_t *effective,
    1751             :                     kernel_cap_t *inheritable,
    1752             :                     kernel_cap_t *permitted);
    1753             : int security_capset(struct cred *new, const struct cred *old,
    1754             :                     const kernel_cap_t *effective,
    1755             :                     const kernel_cap_t *inheritable,
    1756             :                     const kernel_cap_t *permitted);
    1757             : int security_capable(int cap);
    1758             : int security_real_capable(struct task_struct *tsk, int cap);
    1759             : int security_real_capable_noaudit(struct task_struct *tsk, int cap);
    1760             : int security_acct(struct file *file);
    1761             : int security_sysctl(struct ctl_table *table, int op);
    1762             : int security_quotactl(int cmds, int type, int id, struct super_block *sb);
    1763             : int security_quota_on(struct dentry *dentry);
    1764             : int security_syslog(int type);
    1765             : int security_settime(struct timespec *ts, struct timezone *tz);
    1766             : int security_vm_enough_memory(long pages);
    1767             : int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
    1768             : int security_vm_enough_memory_kern(long pages);
    1769             : int security_bprm_set_creds(struct linux_binprm *bprm);
    1770             : int security_bprm_check(struct linux_binprm *bprm);
    1771             : void security_bprm_committing_creds(struct linux_binprm *bprm);
    1772             : void security_bprm_committed_creds(struct linux_binprm *bprm);
    1773             : int security_bprm_secureexec(struct linux_binprm *bprm);
    1774             : int security_sb_alloc(struct super_block *sb);
    1775             : void security_sb_free(struct super_block *sb);
    1776             : int security_sb_copy_data(char *orig, char *copy);
    1777             : int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
    1778             : int security_sb_show_options(struct seq_file *m, struct super_block *sb);
    1779             : int security_sb_statfs(struct dentry *dentry);
    1780             : int security_sb_mount(char *dev_name, struct path *path,
    1781             :                       char *type, unsigned long flags, void *data);
    1782             : int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
    1783             : int security_sb_umount(struct vfsmount *mnt, int flags);
    1784             : void security_sb_umount_close(struct vfsmount *mnt);
    1785             : void security_sb_umount_busy(struct vfsmount *mnt);
    1786             : void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
    1787             : void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
    1788             : int security_sb_pivotroot(struct path *old_path, struct path *new_path);
    1789             : void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
    1790             : int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
    1791             : void security_sb_clone_mnt_opts(const struct super_block *oldsb,
    1792             :                                 struct super_block *newsb);
    1793             : int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
    1794             : 
    1795             : int security_inode_alloc(struct inode *inode);
    1796             : void security_inode_free(struct inode *inode);
    1797             : int security_inode_init_security(struct inode *inode, struct inode *dir,
    1798             :                                   char **name, void **value, size_t *len);
    1799             : int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
    1800             : int security_inode_link(struct dentry *old_dentry, struct inode *dir,
    1801             :                          struct dentry *new_dentry);
    1802             : int security_inode_unlink(struct inode *dir, struct dentry *dentry);
    1803             : int security_inode_symlink(struct inode *dir, struct dentry *dentry,
    1804             :                            const char *old_name);
    1805             : int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
    1806             : int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
    1807             : int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
    1808             : int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
    1809             :                           struct inode *new_dir, struct dentry *new_dentry);
    1810             : int security_inode_readlink(struct dentry *dentry);
    1811             : int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
    1812             : int security_inode_permission(struct inode *inode, int mask);
    1813             : int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
    1814             : int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
    1815             : void security_inode_delete(struct inode *inode);
    1816             : int security_inode_setxattr(struct dentry *dentry, const char *name,
    1817             :                             const void *value, size_t size, int flags);
    1818             : void security_inode_post_setxattr(struct dentry *dentry, const char *name,
    1819             :                                   const void *value, size_t size, int flags);
    1820             : int security_inode_getxattr(struct dentry *dentry, const char *name);
    1821             : int security_inode_listxattr(struct dentry *dentry);
    1822             : int security_inode_removexattr(struct dentry *dentry, const char *name);
    1823             : int security_inode_need_killpriv(struct dentry *dentry);
    1824             : int security_inode_killpriv(struct dentry *dentry);
    1825             : int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
    1826             : int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
    1827             : int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
    1828             : void security_inode_getsecid(const struct inode *inode, u32 *secid);
    1829             : int security_file_permission(struct file *file, int mask);
    1830             : int security_file_alloc(struct file *file);
    1831             : void security_file_free(struct file *file);
    1832             : int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
    1833             : int security_file_mmap(struct file *file, unsigned long reqprot,
    1834             :                         unsigned long prot, unsigned long flags,
    1835             :                         unsigned long addr, unsigned long addr_only);
    1836             : int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
    1837             :                            unsigned long prot);
    1838             : int security_file_lock(struct file *file, unsigned int cmd);
    1839             : int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
    1840             : int security_file_set_fowner(struct file *file);
    1841             : int security_file_send_sigiotask(struct task_struct *tsk,
    1842             :                                  struct fown_struct *fown, int sig);
    1843             : int security_file_receive(struct file *file);
    1844             : int security_dentry_open(struct file *file, const struct cred *cred);
    1845             : int security_task_create(unsigned long clone_flags);
    1846             : int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
    1847             : void security_cred_free(struct cred *cred);
    1848             : int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
    1849             : void security_commit_creds(struct cred *new, const struct cred *old);
    1850             : void security_transfer_creds(struct cred *new, const struct cred *old);
    1851             : int security_kernel_act_as(struct cred *new, u32 secid);
    1852             : int security_kernel_create_files_as(struct cred *new, struct inode *inode);
    1853             : int security_kernel_module_request(char *kmod_name);
    1854             : int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
    1855             : int security_task_fix_setuid(struct cred *new, const struct cred *old,
    1856             :                              int flags);
    1857             : int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
    1858             : int security_task_setpgid(struct task_struct *p, pid_t pgid);
    1859             : int security_task_getpgid(struct task_struct *p);
    1860             : int security_task_getsid(struct task_struct *p);
    1861             : void security_task_getsecid(struct task_struct *p, u32 *secid);
    1862             : int security_task_setgroups(struct group_info *group_info);
    1863             : int security_task_setnice(struct task_struct *p, int nice);
    1864             : int security_task_setioprio(struct task_struct *p, int ioprio);
    1865             : int security_task_getioprio(struct task_struct *p);
    1866             : int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
    1867             : int security_task_setscheduler(struct task_struct *p,
    1868             :                                 int policy, struct sched_param *lp);
    1869             : int security_task_getscheduler(struct task_struct *p);
    1870             : int security_task_movememory(struct task_struct *p);
    1871             : int security_task_kill(struct task_struct *p, struct siginfo *info,
    1872             :                         int sig, u32 secid);
    1873             : int security_task_wait(struct task_struct *p);
    1874             : int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
    1875             :                         unsigned long arg4, unsigned long arg5);
    1876             : void security_task_to_inode(struct task_struct *p, struct inode *inode);
    1877             : int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
    1878             : void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
    1879             : int security_msg_msg_alloc(struct msg_msg *msg);
    1880             : void security_msg_msg_free(struct msg_msg *msg);
    1881             : int security_msg_queue_alloc(struct msg_queue *msq);
    1882             : void security_msg_queue_free(struct msg_queue *msq);
    1883             : int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
    1884             : int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
    1885             : int security_msg_queue_msgsnd(struct msg_queue *msq,
    1886             :                               struct msg_msg *msg, int msqflg);
    1887             : int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
    1888             :                               struct task_struct *target, long type, int mode);
    1889             : int security_shm_alloc(struct shmid_kernel *shp);
    1890             : void security_shm_free(struct shmid_kernel *shp);
    1891             : int security_shm_associate(struct shmid_kernel *shp, int shmflg);
    1892             : int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
    1893             : int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
    1894             : int security_sem_alloc(struct sem_array *sma);
    1895             : void security_sem_free(struct sem_array *sma);
    1896             : int security_sem_associate(struct sem_array *sma, int semflg);
    1897             : int security_sem_semctl(struct sem_array *sma, int cmd);
    1898             : int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
    1899             :                         unsigned nsops, int alter);
    1900             : void security_d_instantiate(struct dentry *dentry, struct inode *inode);
    1901             : int security_getprocattr(struct task_struct *p, char *name, char **value);
    1902             : int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
    1903             : int security_netlink_send(struct sock *sk, struct sk_buff *skb);
    1904             : int security_netlink_recv(struct sk_buff *skb, int cap);
    1905             : int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
    1906             : int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
    1907             : void security_release_secctx(char *secdata, u32 seclen);
    1908             : 
    1909             : int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
    1910             : int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
    1911             : int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
    1912             : #else /* CONFIG_SECURITY */
    1913             : struct security_mnt_opts {
    1914             : };
    1915             : 
    1916             : static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
    1917             : {
    1918             : }
    1919             : 
    1920             : static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
    1921             : {
    1922             : }
    1923             : 
    1924             : /*
    1925             :  * This is the default capabilities functionality.  Most of these functions
    1926             :  * are just stubbed out, but a few must call the proper capable code.
    1927             :  */
    1928             : 
    1929             : static inline int security_init(void)
    1930             : {
    1931             :         return 0;
    1932             : }
    1933             : 
    1934             : static inline int security_ptrace_access_check(struct task_struct *child,
    1935             :                                              unsigned int mode)
    1936             : {
    1937             :         return cap_ptrace_access_check(child, mode);
    1938             : }
    1939             : 
    1940             : static inline int security_ptrace_traceme(struct task_struct *parent)
    1941             : {
    1942             :         return cap_ptrace_traceme(parent);
    1943             : }
    1944             : 
    1945             : static inline int security_capget(struct task_struct *target,
    1946             :                                    kernel_cap_t *effective,
    1947             :                                    kernel_cap_t *inheritable,
    1948             :                                    kernel_cap_t *permitted)
    1949             : {
    1950             :         return cap_capget(target, effective, inheritable, permitted);
    1951             : }
    1952             : 
    1953             : static inline int security_capset(struct cred *new,
    1954             :                                    const struct cred *old,
    1955             :                                    const kernel_cap_t *effective,
    1956             :                                    const kernel_cap_t *inheritable,
    1957             :                                    const kernel_cap_t *permitted)
    1958             : {
    1959             :         return cap_capset(new, old, effective, inheritable, permitted);
    1960             : }
    1961             : 
    1962             : static inline int security_capable(int cap)
    1963             : {
    1964             :         return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
    1965             : }
    1966             : 
    1967             : static inline int security_real_capable(struct task_struct *tsk, int cap)
    1968             : {
    1969             :         int ret;
    1970             : 
    1971             :         rcu_read_lock();
    1972             :         ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
    1973             :         rcu_read_unlock();
    1974             :         return ret;
    1975             : }
    1976             : 
    1977             : static inline
    1978             : int security_real_capable_noaudit(struct task_struct *tsk, int cap)
    1979             : {
    1980             :         int ret;
    1981             : 
    1982             :         rcu_read_lock();
    1983             :         ret = cap_capable(tsk, __task_cred(tsk), cap,
    1984             :                                SECURITY_CAP_NOAUDIT);
    1985             :         rcu_read_unlock();
    1986             :         return ret;
    1987             : }
    1988             : 
    1989             : static inline int security_acct(struct file *file)
    1990             : {
    1991             :         return 0;
    1992             : }
    1993             : 
    1994             : static inline int security_sysctl(struct ctl_table *table, int op)
    1995             : {
    1996             :         return 0;
    1997             : }
    1998             : 
    1999             : static inline int security_quotactl(int cmds, int type, int id,
    2000             :                                      struct super_block *sb)
    2001             : {
    2002             :         return 0;
    2003             : }
    2004             : 
    2005             : static inline int security_quota_on(struct dentry *dentry)
    2006             : {
    2007             :         return 0;
    2008             : }
    2009             : 
    2010             : static inline int security_syslog(int type)
    2011             : {
    2012             :         return cap_syslog(type);
    2013             : }
    2014             : 
    2015             : static inline int security_settime(struct timespec *ts, struct timezone *tz)
    2016             : {
    2017             :         return cap_settime(ts, tz);
    2018             : }
    2019             : 
    2020             : static inline int security_vm_enough_memory(long pages)
    2021             : {
    2022             :         WARN_ON(current->mm == NULL);
    2023             :         return cap_vm_enough_memory(current->mm, pages);
    2024             : }
    2025             : 
    2026             : static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
    2027             : {
    2028             :         WARN_ON(mm == NULL);
    2029             :         return cap_vm_enough_memory(mm, pages);
    2030             : }
    2031             : 
    2032             : static inline int security_vm_enough_memory_kern(long pages)
    2033             : {
    2034             :         /* If current->mm is a kernel thread then we will pass NULL,
    2035             :            for this specific case that is fine */
    2036             :         return cap_vm_enough_memory(current->mm, pages);
    2037             : }
    2038             : 
    2039             : static inline int security_bprm_set_creds(struct linux_binprm *bprm)
    2040             : {
    2041             :         return cap_bprm_set_creds(bprm);
    2042             : }
    2043             : 
    2044             : static inline int security_bprm_check(struct linux_binprm *bprm)
    2045             : {
    2046             :         return 0;
    2047             : }
    2048             : 
    2049             : static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
    2050             : {
    2051             : }
    2052             : 
    2053             : static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
    2054             : {
    2055             : }
    2056             : 
    2057             : static inline int security_bprm_secureexec(struct linux_binprm *bprm)
    2058             : {
    2059             :         return cap_bprm_secureexec(bprm);
    2060             : }
    2061             : 
    2062             : static inline int security_sb_alloc(struct super_block *sb)
    2063             : {
    2064             :         return 0;
    2065             : }
    2066             : 
    2067             : static inline void security_sb_free(struct super_block *sb)
    2068             : { }
    2069             : 
    2070             : static inline int security_sb_copy_data(char *orig, char *copy)
    2071             : {
    2072             :         return 0;
    2073             : }
    2074             : 
    2075             : static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
    2076             : {
    2077             :         return 0;
    2078             : }
    2079             : 
    2080             : static inline int security_sb_show_options(struct seq_file *m,
    2081             :                                            struct super_block *sb)
    2082             : {
    2083             :         return 0;
    2084             : }
    2085             : 
    2086             : static inline int security_sb_statfs(struct dentry *dentry)
    2087             : {
    2088             :         return 0;
    2089             : }
    2090             : 
    2091             : static inline int security_sb_mount(char *dev_name, struct path *path,
    2092             :                                     char *type, unsigned long flags,
    2093             :                                     void *data)
    2094             : {
    2095             :         return 0;
    2096             : }
    2097             : 
    2098             : static inline int security_sb_check_sb(struct vfsmount *mnt,
    2099             :                                        struct path *path)
    2100             : {
    2101             :         return 0;
    2102             : }
    2103             : 
    2104             : static inline int security_sb_umount(struct vfsmount *mnt, int flags)
    2105             : {
    2106             :         return 0;
    2107             : }
    2108             : 
    2109             : static inline void security_sb_umount_close(struct vfsmount *mnt)
    2110             : { }
    2111             : 
    2112             : static inline void security_sb_umount_busy(struct vfsmount *mnt)
    2113             : { }
    2114             : 
    2115             : static inline void security_sb_post_remount(struct vfsmount *mnt,
    2116             :                                              unsigned long flags, void *data)
    2117             : { }
    2118             : 
    2119             : static inline void security_sb_post_addmount(struct vfsmount *mnt,
    2120             :                                              struct path *mountpoint)
    2121             : { }
    2122             : 
    2123             : static inline int security_sb_pivotroot(struct path *old_path,
    2124             :                                         struct path *new_path)
    2125             : {
    2126             :         return 0;
    2127             : }
    2128             : 
    2129             : static inline void security_sb_post_pivotroot(struct path *old_path,
    2130             :                                               struct path *new_path)
    2131             : { }
    2132             : 
    2133             : static inline int security_sb_set_mnt_opts(struct super_block *sb,
    2134             :                                            struct security_mnt_opts *opts)
    2135             : {
    2136             :         return 0;
    2137             : }
    2138             : 
    2139             : static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
    2140             :                                               struct super_block *newsb)
    2141             : { }
    2142             : 
    2143             : static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
    2144             : {
    2145             :         return 0;
    2146             : }
    2147             : 
    2148             : static inline int security_inode_alloc(struct inode *inode)
    2149             : {
    2150             :         return 0;
    2151             : }
    2152             : 
    2153             : static inline void security_inode_free(struct inode *inode)
    2154             : { }
    2155             : 
    2156             : static inline int security_inode_init_security(struct inode *inode,
    2157             :                                                 struct inode *dir,
    2158             :                                                 char **name,
    2159             :                                                 void **value,
    2160             :                                                 size_t *len)
    2161             : {
    2162          16 :         return -EOPNOTSUPP;
    2163             : }
    2164             : 
    2165             : static inline int security_inode_create(struct inode *dir,
    2166             :                                          struct dentry *dentry,
    2167             :                                          int mode)
    2168             : {
    2169             :         return 0;
    2170             : }
    2171             : 
    2172             : static inline int security_inode_link(struct dentry *old_dentry,
    2173             :                                        struct inode *dir,
    2174             :                                        struct dentry *new_dentry)
    2175             : {
    2176             :         return 0;
    2177             : }
    2178             : 
    2179             : static inline int security_inode_unlink(struct inode *dir,
    2180             :                                          struct dentry *dentry)
    2181             : {
    2182             :         return 0;
    2183             : }
    2184             : 
    2185             : static inline int security_inode_symlink(struct inode *dir,
    2186             :                                           struct dentry *dentry,
    2187             :                                           const char *old_name)
    2188             : {
    2189             :         return 0;
    2190             : }
    2191             : 
    2192             : static inline int security_inode_mkdir(struct inode *dir,
    2193             :                                         struct dentry *dentry,
    2194             :                                         int mode)
    2195             : {
    2196             :         return 0;
    2197             : }
    2198             : 
    2199             : static inline int security_inode_rmdir(struct inode *dir,
    2200             :                                         struct dentry *dentry)
    2201             : {
    2202             :         return 0;
    2203             : }
    2204             : 
    2205             : static inline int security_inode_mknod(struct inode *dir,
    2206             :                                         struct dentry *dentry,
    2207             :                                         int mode, dev_t dev)
    2208             : {
    2209             :         return 0;
    2210             : }
    2211             : 
    2212             : static inline int security_inode_rename(struct inode *old_dir,
    2213             :                                          struct dentry *old_dentry,
    2214             :                                          struct inode *new_dir,
    2215             :                                          struct dentry *new_dentry)
    2216             : {
    2217             :         return 0;
    2218             : }
    2219             : 
    2220             : static inline int security_inode_readlink(struct dentry *dentry)
    2221             : {
    2222             :         return 0;
    2223             : }
    2224             : 
    2225             : static inline int security_inode_follow_link(struct dentry *dentry,
    2226             :                                               struct nameidata *nd)
    2227             : {
    2228             :         return 0;
    2229             : }
    2230             : 
    2231             : static inline int security_inode_permission(struct inode *inode, int mask)
    2232             : {
    2233             :         return 0;
    2234             : }
    2235             : 
    2236             : static inline int security_inode_setattr(struct dentry *dentry,
    2237             :                                           struct iattr *attr)
    2238             : {
    2239             :         return 0;
    2240             : }
    2241             : 
    2242             : static inline int security_inode_getattr(struct vfsmount *mnt,
    2243             :                                           struct dentry *dentry)
    2244             : {
    2245             :         return 0;
    2246             : }
    2247             : 
    2248             : static inline void security_inode_delete(struct inode *inode)
    2249             : { }
    2250             : 
    2251             : static inline int security_inode_setxattr(struct dentry *dentry,
    2252             :                 const char *name, const void *value, size_t size, int flags)
    2253             : {
    2254             :         return cap_inode_setxattr(dentry, name, value, size, flags);
    2255             : }
    2256             : 
    2257             : static inline void security_inode_post_setxattr(struct dentry *dentry,
    2258             :                 const char *name, const void *value, size_t size, int flags)
    2259             : { }
    2260             : 
    2261             : static inline int security_inode_getxattr(struct dentry *dentry,
    2262             :                         const char *name)
    2263             : {
    2264             :         return 0;
    2265             : }
    2266             : 
    2267             : static inline int security_inode_listxattr(struct dentry *dentry)
    2268             : {
    2269             :         return 0;
    2270             : }
    2271             : 
    2272             : static inline int security_inode_removexattr(struct dentry *dentry,
    2273             :                         const char *name)
    2274             : {
    2275             :         return cap_inode_removexattr(dentry, name);
    2276             : }
    2277             : 
    2278             : static inline int security_inode_need_killpriv(struct dentry *dentry)
    2279             : {
    2280             :         return cap_inode_need_killpriv(dentry);
    2281             : }
    2282             : 
    2283             : static inline int security_inode_killpriv(struct dentry *dentry)
    2284             : {
    2285             :         return cap_inode_killpriv(dentry);
    2286             : }
    2287             : 
    2288             : static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
    2289             : {
    2290             :         return -EOPNOTSUPP;
    2291             : }
    2292             : 
    2293             : static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
    2294             : {
    2295             :         return -EOPNOTSUPP;
    2296             : }
    2297             : 
    2298             : static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
    2299             : {
    2300             :         return 0;
    2301             : }
    2302             : 
    2303             : static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
    2304             : {
    2305             :         *secid = 0;
    2306             : }
    2307             : 
    2308             : static inline int security_file_permission(struct file *file, int mask)
    2309             : {
    2310             :         return 0;
    2311             : }
    2312             : 
    2313             : static inline int security_file_alloc(struct file *file)
    2314             : {
    2315             :         return 0;
    2316             : }
    2317             : 
    2318             : static inline void security_file_free(struct file *file)
    2319             : { }
    2320             : 
    2321             : static inline int security_file_ioctl(struct file *file, unsigned int cmd,
    2322             :                                       unsigned long arg)
    2323             : {
    2324             :         return 0;
    2325             : }
    2326             : 
    2327             : static inline int security_file_mmap(struct file *file, unsigned long reqprot,
    2328             :                                      unsigned long prot,
    2329             :                                      unsigned long flags,
    2330             :                                      unsigned long addr,
    2331             :                                      unsigned long addr_only)
    2332             : {
    2333             :         return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
    2334             : }
    2335             : 
    2336             : static inline int security_file_mprotect(struct vm_area_struct *vma,
    2337             :                                          unsigned long reqprot,
    2338             :                                          unsigned long prot)
    2339             : {
    2340             :         return 0;
    2341             : }
    2342             : 
    2343             : static inline int security_file_lock(struct file *file, unsigned int cmd)
    2344             : {
    2345             :         return 0;
    2346             : }
    2347             : 
    2348             : static inline int security_file_fcntl(struct file *file, unsigned int cmd,
    2349             :                                       unsigned long arg)
    2350             : {
    2351             :         return 0;
    2352             : }
    2353             : 
    2354             : static inline int security_file_set_fowner(struct file *file)
    2355             : {
    2356             :         return 0;
    2357             : }
    2358             : 
    2359             : static inline int security_file_send_sigiotask(struct task_struct *tsk,
    2360             :                                                struct fown_struct *fown,
    2361             :                                                int sig)
    2362             : {
    2363             :         return 0;
    2364             : }
    2365             : 
    2366             : static inline int security_file_receive(struct file *file)
    2367             : {
    2368             :         return 0;
    2369             : }
    2370             : 
    2371             : static inline int security_dentry_open(struct file *file,
    2372             :                                        const struct cred *cred)
    2373             : {
    2374             :         return 0;
    2375             : }
    2376             : 
    2377             : static inline int security_task_create(unsigned long clone_flags)
    2378             : {
    2379             :         return 0;
    2380             : }
    2381             : 
    2382             : static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
    2383             : {
    2384             :         return 0;
    2385             : }
    2386             : 
    2387             : static inline void security_cred_free(struct cred *cred)
    2388             : { }
    2389             : 
    2390             : static inline int security_prepare_creds(struct cred *new,
    2391             :                                          const struct cred *old,
    2392             :                                          gfp_t gfp)
    2393             : {
    2394             :         return 0;
    2395             : }
    2396             : 
    2397             : static inline void security_commit_creds(struct cred *new,
    2398             :                                          const struct cred *old)
    2399             : {
    2400             : }
    2401             : 
    2402             : static inline void security_transfer_creds(struct cred *new,
    2403             :                                            const struct cred *old)
    2404             : {
    2405             : }
    2406             : 
    2407             : static inline int security_kernel_act_as(struct cred *cred, u32 secid)
    2408             : {
    2409             :         return 0;
    2410             : }
    2411             : 
    2412             : static inline int security_kernel_create_files_as(struct cred *cred,
    2413             :                                                   struct inode *inode)
    2414             : {
    2415             :         return 0;
    2416             : }
    2417             : 
    2418             : static inline int security_kernel_module_request(char *kmod_name)
    2419             : {
    2420             :         return 0;
    2421             : }
    2422             : 
    2423             : static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
    2424             :                                        int flags)
    2425             : {
    2426             :         return 0;
    2427             : }
    2428             : 
    2429             : static inline int security_task_fix_setuid(struct cred *new,
    2430             :                                            const struct cred *old,
    2431             :                                            int flags)
    2432             : {
    2433             :         return cap_task_fix_setuid(new, old, flags);
    2434             : }
    2435             : 
    2436             : static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
    2437             :                                        int flags)
    2438             : {
    2439             :         return 0;
    2440             : }
    2441             : 
    2442             : static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
    2443             : {
    2444             :         return 0;
    2445             : }
    2446             : 
    2447             : static inline int security_task_getpgid(struct task_struct *p)
    2448             : {
    2449             :         return 0;
    2450             : }
    2451             : 
    2452             : static inline int security_task_getsid(struct task_struct *p)
    2453             : {
    2454             :         return 0;
    2455             : }
    2456             : 
    2457             : static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
    2458             : {
    2459             :         *secid = 0;
    2460             : }
    2461             : 
    2462             : static inline int security_task_setgroups(struct group_info *group_info)
    2463             : {
    2464             :         return 0;
    2465             : }
    2466             : 
    2467             : static inline int security_task_setnice(struct task_struct *p, int nice)
    2468             : {
    2469             :         return cap_task_setnice(p, nice);
    2470             : }
    2471             : 
    2472             : static inline int security_task_setioprio(struct task_struct *p, int ioprio)
    2473             : {
    2474             :         return cap_task_setioprio(p, ioprio);
    2475             : }
    2476             : 
    2477             : static inline int security_task_getioprio(struct task_struct *p)
    2478             : {
    2479             :         return 0;
    2480             : }
    2481             : 
    2482             : static inline int security_task_setrlimit(unsigned int resource,
    2483             :                                           struct rlimit *new_rlim)
    2484             : {
    2485             :         return 0;
    2486             : }
    2487             : 
    2488             : static inline int security_task_setscheduler(struct task_struct *p,
    2489             :                                              int policy,
    2490             :                                              struct sched_param *lp)
    2491             : {
    2492             :         return cap_task_setscheduler(p, policy, lp);
    2493             : }
    2494             : 
    2495             : static inline int security_task_getscheduler(struct task_struct *p)
    2496             : {
    2497             :         return 0;
    2498             : }
    2499             : 
    2500             : static inline int security_task_movememory(struct task_struct *p)
    2501             : {
    2502             :         return 0;
    2503             : }
    2504             : 
    2505             : static inline int security_task_kill(struct task_struct *p,
    2506             :                                      struct siginfo *info, int sig,
    2507             :                                      u32 secid)
    2508             : {
    2509             :         return 0;
    2510             : }
    2511             : 
    2512             : static inline int security_task_wait(struct task_struct *p)
    2513             : {
    2514             :         return 0;
    2515             : }
    2516             : 
    2517             : static inline int security_task_prctl(int option, unsigned long arg2,
    2518             :                                       unsigned long arg3,
    2519             :                                       unsigned long arg4,
    2520             :                                       unsigned long arg5)
    2521             : {
    2522             :         return cap_task_prctl(option, arg2, arg3, arg3, arg5);
    2523             : }
    2524             : 
    2525             : static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
    2526             : { }
    2527             : 
    2528             : static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
    2529             :                                           short flag)
    2530             : {
    2531             :         return 0;
    2532             : }
    2533             : 
    2534             : static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
    2535             : {
    2536             :         *secid = 0;
    2537             : }
    2538             : 
    2539             : static inline int security_msg_msg_alloc(struct msg_msg *msg)
    2540             : {
    2541             :         return 0;
    2542             : }
    2543             : 
    2544             : static inline void security_msg_msg_free(struct msg_msg *msg)
    2545             : { }
    2546             : 
    2547             : static inline int security_msg_queue_alloc(struct msg_queue *msq)
    2548             : {
    2549             :         return 0;
    2550             : }
    2551             : 
    2552             : static inline void security_msg_queue_free(struct msg_queue *msq)
    2553             : { }
    2554             : 
    2555             : static inline int security_msg_queue_associate(struct msg_queue *msq,
    2556             :                                                int msqflg)
    2557             : {
    2558             :         return 0;
    2559             : }
    2560             : 
    2561             : static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
    2562             : {
    2563             :         return 0;
    2564             : }
    2565             : 
    2566             : static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
    2567             :                                             struct msg_msg *msg, int msqflg)
    2568             : {
    2569             :         return 0;
    2570             : }
    2571             : 
    2572             : static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
    2573             :                                             struct msg_msg *msg,
    2574             :                                             struct task_struct *target,
    2575             :                                             long type, int mode)
    2576             : {
    2577             :         return 0;
    2578             : }
    2579             : 
    2580             : static inline int security_shm_alloc(struct shmid_kernel *shp)
    2581             : {
    2582             :         return 0;
    2583             : }
    2584             : 
    2585             : static inline void security_shm_free(struct shmid_kernel *shp)
    2586             : { }
    2587             : 
    2588             : static inline int security_shm_associate(struct shmid_kernel *shp,
    2589             :                                          int shmflg)
    2590             : {
    2591             :         return 0;
    2592             : }
    2593             : 
    2594             : static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
    2595             : {
    2596             :         return 0;
    2597             : }
    2598             : 
    2599             : static inline int security_shm_shmat(struct shmid_kernel *shp,
    2600             :                                      char __user *shmaddr, int shmflg)
    2601             : {
    2602             :         return 0;
    2603             : }
    2604             : 
    2605             : static inline int security_sem_alloc(struct sem_array *sma)
    2606             : {
    2607             :         return 0;
    2608             : }
    2609             : 
    2610             : static inline void security_sem_free(struct sem_array *sma)
    2611             : { }
    2612             : 
    2613             : static inline int security_sem_associate(struct sem_array *sma, int semflg)
    2614             : {
    2615             :         return 0;
    2616             : }
    2617             : 
    2618             : static inline int security_sem_semctl(struct sem_array *sma, int cmd)
    2619             : {
    2620             :         return 0;
    2621             : }
    2622             : 
    2623             : static inline int security_sem_semop(struct sem_array *sma,
    2624             :                                      struct sembuf *sops, unsigned nsops,
    2625             :                                      int alter)
    2626             : {
    2627             :         return 0;
    2628             : }
    2629             : 
    2630             : static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
    2631             : { }
    2632             : 
    2633             : static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
    2634             : {
    2635             :         return -EINVAL;
    2636             : }
    2637             : 
    2638             : static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
    2639             : {
    2640             :         return -EINVAL;
    2641             : }
    2642             : 
    2643             : static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
    2644             : {
    2645             :         return cap_netlink_send(sk, skb);
    2646             : }
    2647             : 
    2648             : static inline int security_netlink_recv(struct sk_buff *skb, int cap)
    2649             : {
    2650             :         return cap_netlink_recv(skb, cap);
    2651             : }
    2652             : 
    2653             : static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
    2654             : {
    2655             :         return -EOPNOTSUPP;
    2656             : }
    2657             : 
    2658             : static inline int security_secctx_to_secid(const char *secdata,
    2659             :                                            u32 seclen,
    2660             :                                            u32 *secid)
    2661             : {
    2662             :         return -EOPNOTSUPP;
    2663             : }
    2664             : 
    2665             : static inline void security_release_secctx(char *secdata, u32 seclen)
    2666             : {
    2667             : }
    2668             : 
    2669             : static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
    2670             : {
    2671             :         return -EOPNOTSUPP;
    2672             : }
    2673             : static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
    2674             : {
    2675             :         return -EOPNOTSUPP;
    2676             : }
    2677             : static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
    2678             : {
    2679             :         return -EOPNOTSUPP;
    2680             : }
    2681             : #endif  /* CONFIG_SECURITY */
    2682             : 
    2683             : #ifdef CONFIG_SECURITY_NETWORK
    2684             : 
    2685             : int security_unix_stream_connect(struct socket *sock, struct socket *other,
    2686             :                                  struct sock *newsk);
    2687             : int security_unix_may_send(struct socket *sock,  struct socket *other);
    2688             : int security_socket_create(int family, int type, int protocol, int kern);
    2689             : int security_socket_post_create(struct socket *sock, int family,
    2690             :                                 int type, int protocol, int kern);
    2691             : int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
    2692             : int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
    2693             : int security_socket_listen(struct socket *sock, int backlog);
    2694             : int security_socket_accept(struct socket *sock, struct socket *newsock);
    2695             : int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
    2696             : int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
    2697             :                             int size, int flags);
    2698             : int security_socket_getsockname(struct socket *sock);
    2699             : int security_socket_getpeername(struct socket *sock);
    2700             : int security_socket_getsockopt(struct socket *sock, int level, int optname);
    2701             : int security_socket_setsockopt(struct socket *sock, int level, int optname);
    2702             : int security_socket_shutdown(struct socket *sock, int how);
    2703             : int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
    2704             : int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
    2705             :                                       int __user *optlen, unsigned len);
    2706             : int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
    2707             : int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
    2708             : void security_sk_free(struct sock *sk);
    2709             : void security_sk_clone(const struct sock *sk, struct sock *newsk);
    2710             : void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
    2711             : void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
    2712             : void security_sock_graft(struct sock*sk, struct socket *parent);
    2713             : int security_inet_conn_request(struct sock *sk,
    2714             :                         struct sk_buff *skb, struct request_sock *req);
    2715             : void security_inet_csk_clone(struct sock *newsk,
    2716             :                         const struct request_sock *req);
    2717             : void security_inet_conn_established(struct sock *sk,
    2718             :                         struct sk_buff *skb);
    2719             : int security_tun_dev_create(void);
    2720             : void security_tun_dev_post_create(struct sock *sk);
    2721             : int security_tun_dev_attach(struct sock *sk);
    2722             : 
    2723             : #else   /* CONFIG_SECURITY_NETWORK */
    2724             : static inline int security_unix_stream_connect(struct socket *sock,
    2725             :                                                struct socket *other,
    2726             :                                                struct sock *newsk)
    2727             : {
    2728             :         return 0;
    2729             : }
    2730             : 
    2731             : static inline int security_unix_may_send(struct socket *sock,
    2732             :                                          struct socket *other)
    2733             : {
    2734             :         return 0;
    2735             : }
    2736             : 
    2737             : static inline int security_socket_create(int family, int type,
    2738             :                                          int protocol, int kern)
    2739             : {
    2740             :         return 0;
    2741             : }
    2742             : 
    2743             : static inline int security_socket_post_create(struct socket *sock,
    2744             :                                               int family,
    2745             :                                               int type,
    2746             :                                               int protocol, int kern)
    2747             : {
    2748             :         return 0;
    2749             : }
    2750             : 
    2751             : static inline int security_socket_bind(struct socket *sock,
    2752             :                                        struct sockaddr *address,
    2753             :                                        int addrlen)
    2754             : {
    2755             :         return 0;
    2756             : }
    2757             : 
    2758             : static inline int security_socket_connect(struct socket *sock,
    2759             :                                           struct sockaddr *address,
    2760             :                                           int addrlen)
    2761             : {
    2762             :         return 0;
    2763             : }
    2764             : 
    2765             : static inline int security_socket_listen(struct socket *sock, int backlog)
    2766             : {
    2767             :         return 0;
    2768             : }
    2769             : 
    2770             : static inline int security_socket_accept(struct socket *sock,
    2771             :                                          struct socket *newsock)
    2772             : {
    2773             :         return 0;
    2774             : }
    2775             : 
    2776             : static inline int security_socket_sendmsg(struct socket *sock,
    2777             :                                           struct msghdr *msg, int size)
    2778             : {
    2779             :         return 0;
    2780             : }
    2781             : 
    2782             : static inline int security_socket_recvmsg(struct socket *sock,
    2783             :                                           struct msghdr *msg, int size,
    2784             :                                           int flags)
    2785             : {
    2786             :         return 0;
    2787             : }
    2788             : 
    2789             : static inline int security_socket_getsockname(struct socket *sock)
    2790             : {
    2791             :         return 0;
    2792             : }
    2793             : 
    2794             : static inline int security_socket_getpeername(struct socket *sock)
    2795             : {
    2796             :         return 0;
    2797             : }
    2798             : 
    2799             : static inline int security_socket_getsockopt(struct socket *sock,
    2800             :                                              int level, int optname)
    2801             : {
    2802             :         return 0;
    2803             : }
    2804             : 
    2805             : static inline int security_socket_setsockopt(struct socket *sock,
    2806             :                                              int level, int optname)
    2807             : {
    2808             :         return 0;
    2809             : }
    2810             : 
    2811             : static inline int security_socket_shutdown(struct socket *sock, int how)
    2812             : {
    2813             :         return 0;
    2814             : }
    2815             : static inline int security_sock_rcv_skb(struct sock *sk,
    2816             :                                         struct sk_buff *skb)
    2817             : {
    2818             :         return 0;
    2819             : }
    2820             : 
    2821             : static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
    2822             :                                                     int __user *optlen, unsigned len)
    2823             : {
    2824             :         return -ENOPROTOOPT;
    2825             : }
    2826             : 
    2827             : static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
    2828             : {
    2829             :         return -ENOPROTOOPT;
    2830             : }
    2831             : 
    2832             : static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
    2833             : {
    2834             :         return 0;
    2835             : }
    2836             : 
    2837             : static inline void security_sk_free(struct sock *sk)
    2838             : {
    2839             : }
    2840             : 
    2841             : static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
    2842             : {
    2843             : }
    2844             : 
    2845             : static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
    2846             : {
    2847             : }
    2848             : 
    2849             : static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
    2850             : {
    2851             : }
    2852             : 
    2853             : static inline void security_sock_graft(struct sock *sk, struct socket *parent)
    2854             : {
    2855             : }
    2856             : 
    2857             : static inline int security_inet_conn_request(struct sock *sk,
    2858             :                         struct sk_buff *skb, struct request_sock *req)
    2859             : {
    2860             :         return 0;
    2861             : }
    2862             : 
    2863             : static inline void security_inet_csk_clone(struct sock *newsk,
    2864             :                         const struct request_sock *req)
    2865             : {
    2866             : }
    2867             : 
    2868             : static inline void security_inet_conn_established(struct sock *sk,
    2869             :                         struct sk_buff *skb)
    2870             : {
    2871             : }
    2872             : 
    2873             : static inline int security_tun_dev_create(void)
    2874             : {
    2875             :         return 0;
    2876             : }
    2877             : 
    2878             : static inline void security_tun_dev_post_create(struct sock *sk)
    2879             : {
    2880             : }
    2881             : 
    2882             : static inline int security_tun_dev_attach(struct sock *sk)
    2883             : {
    2884             :         return 0;
    2885             : }
    2886             : #endif  /* CONFIG_SECURITY_NETWORK */
    2887             : 
    2888             : #ifdef CONFIG_SECURITY_NETWORK_XFRM
    2889             : 
    2890             : int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
    2891             : int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
    2892             : void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
    2893             : int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
    2894             : int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
    2895             : int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
    2896             :                                       struct xfrm_sec_ctx *polsec, u32 secid);
    2897             : int security_xfrm_state_delete(struct xfrm_state *x);
    2898             : void security_xfrm_state_free(struct xfrm_state *x);
    2899             : int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
    2900             : int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
    2901             :                                        struct xfrm_policy *xp, struct flowi *fl);
    2902             : int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
    2903             : void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
    2904             : 
    2905             : #else   /* CONFIG_SECURITY_NETWORK_XFRM */
    2906             : 
    2907             : static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
    2908             : {
    2909             :         return 0;
    2910             : }
    2911             : 
    2912             : static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
    2913             : {
    2914             :         return 0;
    2915             : }
    2916             : 
    2917             : static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
    2918             : {
    2919             : }
    2920             : 
    2921             : static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
    2922             : {
    2923             :         return 0;
    2924             : }
    2925             : 
    2926             : static inline int security_xfrm_state_alloc(struct xfrm_state *x,
    2927             :                                         struct xfrm_user_sec_ctx *sec_ctx)
    2928             : {
    2929             :         return 0;
    2930             : }
    2931             : 
    2932             : static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
    2933             :                                         struct xfrm_sec_ctx *polsec, u32 secid)
    2934             : {
    2935             :         return 0;
    2936             : }
    2937             : 
    2938             : static inline void security_xfrm_state_free(struct xfrm_state *x)
    2939             : {
    2940             : }
    2941             : 
    2942             : static inline int security_xfrm_state_delete(struct xfrm_state *x)
    2943             : {
    2944             :         return 0;
    2945             : }
    2946             : 
    2947             : static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
    2948             : {
    2949             :         return 0;
    2950             : }
    2951             : 
    2952             : static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
    2953             :                         struct xfrm_policy *xp, struct flowi *fl)
    2954             : {
    2955             :         return 1;
    2956             : }
    2957             : 
    2958             : static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
    2959             : {
    2960             :         return 0;
    2961             : }
    2962             : 
    2963             : static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
    2964             : {
    2965             : }
    2966             : 
    2967             : #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
    2968             : 
    2969             : #ifdef CONFIG_SECURITY_PATH
    2970             : int security_path_unlink(struct path *dir, struct dentry *dentry);
    2971             : int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
    2972             : int security_path_rmdir(struct path *dir, struct dentry *dentry);
    2973             : int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
    2974             :                         unsigned int dev);
    2975             : int security_path_truncate(struct path *path, loff_t length,
    2976             :                            unsigned int time_attrs);
    2977             : int security_path_symlink(struct path *dir, struct dentry *dentry,
    2978             :                           const char *old_name);
    2979             : int security_path_link(struct dentry *old_dentry, struct path *new_dir,
    2980             :                        struct dentry *new_dentry);
    2981             : int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
    2982             :                          struct path *new_dir, struct dentry *new_dentry);
    2983             : int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
    2984             :                         mode_t mode);
    2985             : int security_path_chown(struct path *path, uid_t uid, gid_t gid);
    2986             : int security_path_chroot(struct path *path);
    2987             : #else   /* CONFIG_SECURITY_PATH */
    2988             : static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
    2989             : {
    2990             :         return 0;
    2991             : }
    2992             : 
    2993             : static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
    2994             :                                       int mode)
    2995             : {
    2996             :         return 0;
    2997             : }
    2998             : 
    2999             : static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
    3000             : {
    3001             :         return 0;
    3002             : }
    3003             : 
    3004             : static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
    3005             :                                       int mode, unsigned int dev)
    3006             : {
    3007             :         return 0;
    3008             : }
    3009             : 
    3010             : static inline int security_path_truncate(struct path *path, loff_t length,
    3011             :                                          unsigned int time_attrs)
    3012             : {
    3013             :         return 0;
    3014             : }
    3015             : 
    3016             : static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
    3017             :                                         const char *old_name)
    3018             : {
    3019             :         return 0;
    3020             : }
    3021             : 
    3022             : static inline int security_path_link(struct dentry *old_dentry,
    3023             :                                      struct path *new_dir,
    3024             :                                      struct dentry *new_dentry)
    3025             : {
    3026             :         return 0;
    3027             : }
    3028             : 
    3029             : static inline int security_path_rename(struct path *old_dir,
    3030             :                                        struct dentry *old_dentry,
    3031             :                                        struct path *new_dir,
    3032             :                                        struct dentry *new_dentry)
    3033             : {
    3034             :         return 0;
    3035             : }
    3036             : 
    3037             : static inline int security_path_chmod(struct dentry *dentry,
    3038             :                                       struct vfsmount *mnt,
    3039             :                                       mode_t mode)
    3040             : {
    3041             :         return 0;
    3042             : }
    3043             : 
    3044             : static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
    3045             : {
    3046             :         return 0;
    3047             : }
    3048             : 
    3049             : static inline int security_path_chroot(struct path *path)
    3050             : {
    3051             :         return 0;
    3052             : }
    3053             : #endif  /* CONFIG_SECURITY_PATH */
    3054             : 
    3055             : #ifdef CONFIG_KEYS
    3056             : #ifdef CONFIG_SECURITY
    3057             : 
    3058             : int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
    3059             : void security_key_free(struct key *key);
    3060             : int security_key_permission(key_ref_t key_ref,
    3061             :                             const struct cred *cred, key_perm_t perm);
    3062             : int security_key_getsecurity(struct key *key, char **_buffer);
    3063             : int security_key_session_to_parent(const struct cred *cred,
    3064             :                                    const struct cred *parent_cred,
    3065             :                                    struct key *key);
    3066             : 
    3067             : #else
    3068             : 
    3069             : static inline int security_key_alloc(struct key *key,
    3070             :                                      const struct cred *cred,
    3071             :                                      unsigned long flags)
    3072             : {
    3073             :         return 0;
    3074             : }
    3075             : 
    3076             : static inline void security_key_free(struct key *key)
    3077             : {
    3078             : }
    3079             : 
    3080             : static inline int security_key_permission(key_ref_t key_ref,
    3081             :                                           const struct cred *cred,
    3082             :                                           key_perm_t perm)
    3083             : {
    3084             :         return 0;
    3085             : }
    3086             : 
    3087             : static inline int security_key_getsecurity(struct key *key, char **_buffer)
    3088             : {
    3089             :         *_buffer = NULL;
    3090             :         return 0;
    3091             : }
    3092             : 
    3093             : static inline int security_key_session_to_parent(const struct cred *cred,
    3094             :                                                  const struct cred *parent_cred,
    3095             :                                                  struct key *key)
    3096             : {
    3097             :         return 0;
    3098             : }
    3099             : 
    3100             : #endif
    3101             : #endif /* CONFIG_KEYS */
    3102             : 
    3103             : #ifdef CONFIG_AUDIT
    3104             : #ifdef CONFIG_SECURITY
    3105             : int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
    3106             : int security_audit_rule_known(struct audit_krule *krule);
    3107             : int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
    3108             :                               struct audit_context *actx);
    3109             : void security_audit_rule_free(void *lsmrule);
    3110             : 
    3111             : #else
    3112             : 
    3113             : static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
    3114             :                                            void **lsmrule)
    3115             : {
    3116             :         return 0;
    3117             : }
    3118             : 
    3119             : static inline int security_audit_rule_known(struct audit_krule *krule)
    3120             : {
    3121             :         return 0;
    3122             : }
    3123             : 
    3124             : static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
    3125             :                                    void *lsmrule, struct audit_context *actx)
    3126             : {
    3127             :         return 0;
    3128             : }
    3129             : 
    3130             : static inline void security_audit_rule_free(void *lsmrule)
    3131             : { }
    3132             : 
    3133             : #endif /* CONFIG_SECURITY */
    3134             : #endif /* CONFIG_AUDIT */
    3135             : 
    3136             : #ifdef CONFIG_SECURITYFS
    3137             : 
    3138             : extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
    3139             :                                              struct dentry *parent, void *data,
    3140             :                                              const struct file_operations *fops);
    3141             : extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
    3142             : extern void securityfs_remove(struct dentry *dentry);
    3143             : 
    3144             : #else /* CONFIG_SECURITYFS */
    3145             : 
    3146             : static inline struct dentry *securityfs_create_dir(const char *name,
    3147             :                                                    struct dentry *parent)
    3148             : {
    3149             :         return ERR_PTR(-ENODEV);
    3150             : }
    3151             : 
    3152             : static inline struct dentry *securityfs_create_file(const char *name,
    3153             :                                                     mode_t mode,
    3154             :                                                     struct dentry *parent,
    3155             :                                                     void *data,
    3156             :                                                     const struct file_operations *fops)
    3157             : {
    3158             :         return ERR_PTR(-ENODEV);
    3159             : }
    3160             : 
    3161             : static inline void securityfs_remove(struct dentry *dentry)
    3162             : {}
    3163             : 
    3164             : #endif
    3165             : 
    3166             : #ifdef CONFIG_SECURITY
    3167             : 
    3168             : static inline char *alloc_secdata(void)
    3169             : {
    3170             :         return (char *)get_zeroed_page(GFP_KERNEL);
    3171             : }
    3172             : 
    3173             : static inline void free_secdata(void *secdata)
    3174             : {
    3175             :         free_page((unsigned long)secdata);
    3176             : }
    3177             : 
    3178             : #else
    3179             : 
    3180             : static inline char *alloc_secdata(void)
    3181             : {
    3182             :         return (char *)1;
    3183             : }
    3184             : 
    3185             : static inline void free_secdata(void *secdata)
    3186             : { }
    3187             : #endif /* CONFIG_SECURITY */
    3188             : 
    3189             : #endif /* ! __LINUX_SECURITY_H */
    3190             : 

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