LCOV - code coverage report
Current view: top level - lkbce/fs/ext2 - xattr_user.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 21 21 100.0 %
Date: 2017-01-25 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :  * linux/fs/ext2/xattr_user.c
       3             :  * Handler for extended user attributes.
       4             :  *
       5             :  * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
       6             :  */
       7             : 
       8             : #include <linux/init.h>
       9             : #include <linux/module.h>
      10             : #include <linux/string.h>
      11             : #include "ext2.h"
      12             : #include "xattr.h"
      13             : 
      14             : static size_t
      15             : ext2_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
      16             :                 const char *name, size_t name_len, int type)
      17             : {
      18           4 :         const size_t prefix_len = XATTR_USER_PREFIX_LEN;
      19           4 :         const size_t total_len = prefix_len + name_len + 1;
      20           2 : 
      21           8 :         if (!test_opt(dentry->d_sb, XATTR_USER))
      22           2 :                 return 0;
      23             : 
      24           8 :         if (list && total_len <= list_size) {
      25           2 :                 memcpy(list, XATTR_USER_PREFIX, prefix_len);
      26           2 :                 memcpy(list+prefix_len, name, name_len);
      27           2 :                 list[prefix_len + name_len] = '\0';
      28             :         }
      29           2 :         return total_len;
      30             : }
      31             : 
      32             : static int
      33             : ext2_xattr_user_get(struct dentry *dentry, const char *name,
      34             :                 void *buffer, size_t size, int type)
      35             : {
      36           8 :         if (strcmp(name, "") == 0)
      37           4 :                 return -EINVAL;
      38          10 :         if (!test_opt(dentry->d_sb, XATTR_USER))
      39           2 :                 return -EOPNOTSUPP;
      40           8 :         return ext2_xattr_get(dentry->d_inode, EXT2_XATTR_INDEX_USER,
      41             :                               name, buffer, size);
      42             : }
      43             : 
      44             : static int
      45             : ext2_xattr_user_set(struct dentry *dentry, const char *name,
      46             :                 const void *value, size_t size, int flags, int type)
      47             : {
      48           8 :         if (strcmp(name, "") == 0)
      49           4 :                 return -EINVAL;
      50          10 :         if (!test_opt(dentry->d_sb, XATTR_USER))
      51           2 :                 return -EOPNOTSUPP;
      52             : 
      53           8 :         return ext2_xattr_set(dentry->d_inode, EXT2_XATTR_INDEX_USER,
      54             :                               name, value, size, flags);
      55             : }
      56             : 
      57           1 : struct xattr_handler ext2_xattr_user_handler = {
      58             :         .prefix = XATTR_USER_PREFIX,
      59             :         .list   = ext2_xattr_user_list,
      60             :         .get    = ext2_xattr_user_get,
      61             :         .set    = ext2_xattr_user_set,
      62             : };

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