LCOV - code coverage report
Current view: top level - lkbce/include/linux - socket.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef _LINUX_SOCKET_H
       2             : #define _LINUX_SOCKET_H
       3             : 
       4             : /*
       5             :  * Desired design of maximum size and alignment (see RFC2553)
       6             :  */
       7             : #define _K_SS_MAXSIZE   128     /* Implementation specific max size */
       8             : #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
       9             :                                 /* Implementation specific desired alignment */
      10             : 
      11             : struct __kernel_sockaddr_storage {
      12             :         unsigned short  ss_family;              /* address family */
      13             :         /* Following field(s) are implementation specific */
      14             :         char            __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
      15             :                                 /* space to achieve desired size, */
      16           1 :                                 /* _SS_MAXSIZE value minus size of ss_family */
      17             : } __attribute__ ((aligned(_K_SS_ALIGNSIZE)));   /* force desired alignment */
      18             : 
      19             : #ifdef __KERNEL__
      20             : 
      21             : #include <asm/socket.h>                   /* arch-dependent defines       */
      22             : #include <linux/sockios.h>                /* the SIOCxxx I/O controls     */
      23             : #include <linux/uio.h>                    /* iovec support                */
      24             : #include <linux/types.h>          /* pid_t                        */
      25             : #include <linux/compiler.h>               /* __user                       */
      26             : 
      27             : #define __sockaddr_check_size(size)     \
      28             :         BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
      29             : 
      30             : #ifdef __KERNEL__
      31             : # ifdef CONFIG_PROC_FS
      32             : struct seq_file;
      33             : extern void socket_seq_show(struct seq_file *seq);
      34             : # endif
      35             : #endif /* __KERNEL__ */
      36             : 
      37             : typedef unsigned short  sa_family_t;
      38             : 
      39             : /*
      40             :  *      1003.1g requires sa_family_t and that sa_data is char.
      41             :  */
      42             :  
      43             : struct sockaddr {
      44             :         sa_family_t     sa_family;      /* address family, AF_xxx       */
      45             :         char            sa_data[14];    /* 14 bytes of protocol address */
      46             : };
      47             : 
      48             : struct linger {
      49             :         int             l_onoff;        /* Linger active                */
      50             :         int             l_linger;       /* How long to linger for       */
      51             : };
      52             : 
      53             : #define sockaddr_storage __kernel_sockaddr_storage
      54             : 
      55             : /*
      56             :  *      As we do 4.4BSD message passing we use a 4.4BSD message passing
      57             :  *      system, not 4.3. Thus msg_accrights(len) are now missing. They
      58             :  *      belong in an obscure libc emulation or the bin.
      59             :  */
      60             :  
      61             : struct msghdr {
      62             :         void    *       msg_name;       /* Socket name                  */
      63             :         int             msg_namelen;    /* Length of name               */
      64             :         struct iovec *  msg_iov;        /* Data blocks                  */
      65             :         __kernel_size_t msg_iovlen;     /* Number of blocks             */
      66             :         void    *       msg_control;    /* Per protocol magic (eg BSD file descriptor passing) */
      67             :         __kernel_size_t msg_controllen; /* Length of cmsg list */
      68             :         unsigned        msg_flags;
      69             : };
      70             : 
      71             : /* For recvmmsg/sendmmsg */
      72             : struct mmsghdr {
      73             :         struct msghdr   msg_hdr;
      74             :         unsigned        msg_len;
      75             : };
      76             : 
      77             : /*
      78             :  *      POSIX 1003.1g - ancillary data object information
      79             :  *      Ancillary data consits of a sequence of pairs of
      80             :  *      (cmsghdr, cmsg_data[])
      81             :  */
      82             : 
      83             : struct cmsghdr {
      84             :         __kernel_size_t cmsg_len;       /* data byte count, including hdr */
      85             :         int             cmsg_level;     /* originating protocol */
      86             :         int             cmsg_type;      /* protocol-specific type */
      87             : };
      88             : 
      89             : /*
      90             :  *      Ancilliary data object information MACROS
      91             :  *      Table 5-14 of POSIX 1003.1g
      92             :  */
      93             : 
      94             : #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
      95             : #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
      96             : 
      97             : #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
      98             : 
      99             : #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr))))
     100             : #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len))
     101             : #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
     102             : 
     103             : #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
     104             :                                   (struct cmsghdr *)(ctl) : \
     105             :                                   (struct cmsghdr *)NULL)
     106             : #define CMSG_FIRSTHDR(msg)      __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
     107             : #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \
     108             :                              (cmsg)->cmsg_len <= (unsigned long) \
     109             :                              ((mhdr)->msg_controllen - \
     110             :                               ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
     111             : 
     112             : /*
     113             :  *      Get the next cmsg header
     114             :  *
     115             :  *      PLEASE, do not touch this function. If you think, that it is
     116             :  *      incorrect, grep kernel sources and think about consequences
     117             :  *      before trying to improve it.
     118             :  *
     119             :  *      Now it always returns valid, not truncated ancillary object
     120             :  *      HEADER. But caller still MUST check, that cmsg->cmsg_len is
     121             :  *      inside range, given by msg->msg_controllen before using
     122             :  *      ancillary object DATA.                          --ANK (980731)
     123             :  */
     124             :  
     125             : static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
     126             :                                                struct cmsghdr *__cmsg)
     127             : {
     128             :         struct cmsghdr * __ptr;
     129             : 
     130             :         __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) +  CMSG_ALIGN(__cmsg->cmsg_len));
     131             :         if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
     132             :                 return (struct cmsghdr *)0;
     133             : 
     134             :         return __ptr;
     135             : }
     136             : 
     137             : static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
     138             : {
     139             :         return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
     140             : }
     141             : 
     142             : /* "Socket"-level control message types: */
     143             : 
     144             : #define SCM_RIGHTS      0x01            /* rw: access rights (array of int) */
     145             : #define SCM_CREDENTIALS 0x02            /* rw: struct ucred             */
     146             : #define SCM_SECURITY    0x03            /* rw: security label           */
     147             : 
     148             : struct ucred {
     149             :         __u32   pid;
     150             :         __u32   uid;
     151             :         __u32   gid;
     152             : };
     153             : 
     154             : /* Supported address families. */
     155             : #define AF_UNSPEC       0
     156             : #define AF_UNIX         1       /* Unix domain sockets          */
     157             : #define AF_LOCAL        1       /* POSIX name for AF_UNIX       */
     158             : #define AF_INET         2       /* Internet IP Protocol         */
     159             : #define AF_AX25         3       /* Amateur Radio AX.25          */
     160             : #define AF_IPX          4       /* Novell IPX                   */
     161             : #define AF_APPLETALK    5       /* AppleTalk DDP                */
     162             : #define AF_NETROM       6       /* Amateur Radio NET/ROM        */
     163             : #define AF_BRIDGE       7       /* Multiprotocol bridge         */
     164             : #define AF_ATMPVC       8       /* ATM PVCs                     */
     165             : #define AF_X25          9       /* Reserved for X.25 project    */
     166             : #define AF_INET6        10      /* IP version 6                 */
     167             : #define AF_ROSE         11      /* Amateur Radio X.25 PLP       */
     168             : #define AF_DECnet       12      /* Reserved for DECnet project  */
     169             : #define AF_NETBEUI      13      /* Reserved for 802.2LLC project*/
     170             : #define AF_SECURITY     14      /* Security callback pseudo AF */
     171             : #define AF_KEY          15      /* PF_KEY key management API */
     172             : #define AF_NETLINK      16
     173             : #define AF_ROUTE        AF_NETLINK /* Alias to emulate 4.4BSD */
     174             : #define AF_PACKET       17      /* Packet family                */
     175             : #define AF_ASH          18      /* Ash                          */
     176             : #define AF_ECONET       19      /* Acorn Econet                 */
     177             : #define AF_ATMSVC       20      /* ATM SVCs                     */
     178             : #define AF_RDS          21      /* RDS sockets                  */
     179             : #define AF_SNA          22      /* Linux SNA Project (nutters!) */
     180             : #define AF_IRDA         23      /* IRDA sockets                 */
     181             : #define AF_PPPOX        24      /* PPPoX sockets                */
     182             : #define AF_WANPIPE      25      /* Wanpipe API Sockets */
     183             : #define AF_LLC          26      /* Linux LLC                    */
     184             : #define AF_CAN          29      /* Controller Area Network      */
     185             : #define AF_TIPC         30      /* TIPC sockets                 */
     186             : #define AF_BLUETOOTH    31      /* Bluetooth sockets            */
     187             : #define AF_IUCV         32      /* IUCV sockets                 */
     188             : #define AF_RXRPC        33      /* RxRPC sockets                */
     189             : #define AF_ISDN         34      /* mISDN sockets                */
     190             : #define AF_PHONET       35      /* Phonet sockets               */
     191             : #define AF_IEEE802154   36      /* IEEE802154 sockets           */
     192             : #define AF_MAX          37      /* For now.. */
     193             : 
     194             : /* Protocol families, same as address families. */
     195             : #define PF_UNSPEC       AF_UNSPEC
     196             : #define PF_UNIX         AF_UNIX
     197             : #define PF_LOCAL        AF_LOCAL
     198             : #define PF_INET         AF_INET
     199             : #define PF_AX25         AF_AX25
     200             : #define PF_IPX          AF_IPX
     201             : #define PF_APPLETALK    AF_APPLETALK
     202             : #define PF_NETROM       AF_NETROM
     203             : #define PF_BRIDGE       AF_BRIDGE
     204             : #define PF_ATMPVC       AF_ATMPVC
     205             : #define PF_X25          AF_X25
     206             : #define PF_INET6        AF_INET6
     207             : #define PF_ROSE         AF_ROSE
     208             : #define PF_DECnet       AF_DECnet
     209             : #define PF_NETBEUI      AF_NETBEUI
     210             : #define PF_SECURITY     AF_SECURITY
     211             : #define PF_KEY          AF_KEY
     212             : #define PF_NETLINK      AF_NETLINK
     213             : #define PF_ROUTE        AF_ROUTE
     214             : #define PF_PACKET       AF_PACKET
     215             : #define PF_ASH          AF_ASH
     216             : #define PF_ECONET       AF_ECONET
     217             : #define PF_ATMSVC       AF_ATMSVC
     218             : #define PF_RDS          AF_RDS
     219             : #define PF_SNA          AF_SNA
     220             : #define PF_IRDA         AF_IRDA
     221             : #define PF_PPPOX        AF_PPPOX
     222             : #define PF_WANPIPE      AF_WANPIPE
     223             : #define PF_LLC          AF_LLC
     224             : #define PF_CAN          AF_CAN
     225             : #define PF_TIPC         AF_TIPC
     226             : #define PF_BLUETOOTH    AF_BLUETOOTH
     227             : #define PF_IUCV         AF_IUCV
     228             : #define PF_RXRPC        AF_RXRPC
     229             : #define PF_ISDN         AF_ISDN
     230             : #define PF_PHONET       AF_PHONET
     231             : #define PF_IEEE802154   AF_IEEE802154
     232             : #define PF_MAX          AF_MAX
     233             : 
     234             : /* Maximum queue length specifiable by listen.  */
     235             : #define SOMAXCONN       128
     236             : 
     237             : /* Flags we can use with send/ and recv. 
     238             :    Added those for 1003.1g not all are supported yet
     239             :  */
     240             :  
     241             : #define MSG_OOB         1
     242             : #define MSG_PEEK        2
     243             : #define MSG_DONTROUTE   4
     244             : #define MSG_TRYHARD     4       /* Synonym for MSG_DONTROUTE for DECnet */
     245             : #define MSG_CTRUNC      8
     246             : #define MSG_PROBE       0x10    /* Do not send. Only probe path f.e. for MTU */
     247             : #define MSG_TRUNC       0x20
     248             : #define MSG_DONTWAIT    0x40    /* Nonblocking io                */
     249             : #define MSG_EOR         0x80    /* End of record */
     250             : #define MSG_WAITALL     0x100   /* Wait for a full request */
     251             : #define MSG_FIN         0x200
     252             : #define MSG_SYN         0x400
     253             : #define MSG_CONFIRM     0x800   /* Confirm path validity */
     254             : #define MSG_RST         0x1000
     255             : #define MSG_ERRQUEUE    0x2000  /* Fetch message from error queue */
     256             : #define MSG_NOSIGNAL    0x4000  /* Do not generate SIGPIPE */
     257             : #define MSG_MORE        0x8000  /* Sender will send more */
     258             : 
     259             : #define MSG_EOF         MSG_FIN
     260             : 
     261             : #define MSG_CMSG_CLOEXEC 0x40000000     /* Set close_on_exit for file
     262             :                                            descriptor received through
     263             :                                            SCM_RIGHTS */
     264             : #if defined(CONFIG_COMPAT)
     265             : #define MSG_CMSG_COMPAT 0x80000000      /* This message needs 32 bit fixups */
     266             : #else
     267             : #define MSG_CMSG_COMPAT 0               /* We never have 32 bit fixups */
     268             : #endif
     269             : 
     270             : 
     271             : /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
     272             : #define SOL_IP          0
     273             : /* #define SOL_ICMP     1       No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
     274             : #define SOL_TCP         6
     275             : #define SOL_UDP         17
     276             : #define SOL_IPV6        41
     277             : #define SOL_ICMPV6      58
     278             : #define SOL_SCTP        132
     279             : #define SOL_UDPLITE     136     /* UDP-Lite (RFC 3828) */
     280             : #define SOL_RAW         255
     281             : #define SOL_IPX         256
     282             : #define SOL_AX25        257
     283             : #define SOL_ATALK       258
     284             : #define SOL_NETROM      259
     285             : #define SOL_ROSE        260
     286             : #define SOL_DECNET      261
     287             : #define SOL_X25         262
     288             : #define SOL_PACKET      263
     289             : #define SOL_ATM         264     /* ATM layer (cell level) */
     290             : #define SOL_AAL         265     /* ATM Adaption Layer (packet level) */
     291             : #define SOL_IRDA        266
     292             : #define SOL_NETBEUI     267
     293             : #define SOL_LLC         268
     294             : #define SOL_DCCP        269
     295             : #define SOL_NETLINK     270
     296             : #define SOL_TIPC        271
     297             : #define SOL_RXRPC       272
     298             : #define SOL_PPPOL2TP    273
     299             : #define SOL_BLUETOOTH   274
     300             : #define SOL_PNPIPE      275
     301             : #define SOL_RDS         276
     302             : #define SOL_IUCV        277
     303             : 
     304             : /* IPX options */
     305             : #define IPX_TYPE        1
     306             : 
     307             : #ifdef __KERNEL__
     308             : extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
     309             : extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
     310             :                                int offset, int len);
     311             : extern int csum_partial_copy_fromiovecend(unsigned char *kdata, 
     312             :                                           struct iovec *iov, 
     313             :                                           int offset, 
     314             :                                           unsigned int len, __wsum *csump);
     315             : 
     316             : extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode);
     317             : extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len);
     318             : extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,
     319             :                              int offset, int len);
     320             : extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen);
     321             : extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr);
     322             : extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
     323             : 
     324             : struct timespec;
     325             : 
     326             : extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
     327             :                           unsigned int flags, struct timespec *timeout);
     328             : #endif
     329             : #endif /* not kernel and not glibc */
     330             : #endif /* _LINUX_SOCKET_H */

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