syscalls/recv.c

   1 /*
   2    asmlinkage long sys_recv(int fd, void __user *ubuf, size_t size,
   3                             unsigned flags)
   4
   5  */
   6 #include <sys/types.h>
   7 #include <sys/socket.h>
   8 #include "compat.h"
   9 #include "sanitise.h"
  10
  11 struct syscallentry syscall_recv = {
  12         .name = "recv",
  13         .num_args = 4,
  14         .arg1name = "fd",
  15         .arg1type = ARG_FD,
  16         .arg2name = "ubuf",
  17         .arg2type = ARG_ADDRESS,
  18         .arg3name = "size",
  19         .arg3type = ARG_LEN,
  20         .arg4name = "flags",
  21         .arg4type = ARG_LIST,
  22         .arg4list = {
  23                 .num = 20,
  24                 .values = { MSG_OOB, MSG_PEEK, MSG_DONTROUTE, MSG_CTRUNC,
  25                             MSG_PROBE, MSG_TRUNC, MSG_DONTWAIT, MSG_EOR,
  26                             MSG_WAITALL, MSG_FIN, MSG_SYN, MSG_CONFIRM,
  27                             MSG_RST, MSG_ERRQUEUE, MSG_NOSIGNAL, MSG_MORE,
  28                             MSG_WAITFORONE, MSG_FASTOPEN, MSG_CMSG_CLOEXEC, MSG_CMSG_COMPAT },
  29         },
  30         .flags = NEED_ALARM,
  31 };
  32
  33
  34 /*
  35  * SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
  36         unsigned, flags, struct sockaddr __user *, addr,
  37         int __user *, addr_len)
  38  */
  39 struct syscallentry syscall_recvfrom = {
  40         .name = "recvfrom",
  41         .num_args = 6,
  42         .arg1name = "fd",
  43         .arg1type = ARG_FD,
  44         .arg2name = "ubuf",
  45         .arg2type = ARG_ADDRESS,
  46         .arg3name = "size",
  47         .arg3type = ARG_LEN,
  48         .arg4name = "flags",
  49         .arg4type = ARG_LIST,
  50         .arg4list = {
  51                 .num = 20,
  52                 .values = { MSG_OOB, MSG_PEEK, MSG_DONTROUTE, MSG_CTRUNC,
  53                             MSG_PROBE, MSG_TRUNC, MSG_DONTWAIT, MSG_EOR,
  54                             MSG_WAITALL, MSG_FIN, MSG_SYN, MSG_CONFIRM,
  55                             MSG_RST, MSG_ERRQUEUE, MSG_NOSIGNAL, MSG_MORE,
  56                             MSG_WAITFORONE, MSG_FASTOPEN, MSG_CMSG_CLOEXEC, MSG_CMSG_COMPAT },
  57         },
  58         .arg5name = "addr",
  59         .arg5type = ARG_SOCKADDR,
  60         .arg6name = "addr_len",
  61         .arg6type = ARG_SOCKADDRLEN,
  62         .flags = NEED_ALARM,
  63 };
  64
  65
  66 /*
  67  * SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, unsigned int, flags)
  68  */
  69 struct syscallentry syscall_recvmsg = {
  70         .name = "recvmsg",
  71         .num_args = 3,
  72         .arg1name = "fd",
  73         .arg1type = ARG_FD,
  74         .arg2name = "msg",
  75         .arg2type = ARG_ADDRESS,
  76         .arg3name = "flags",
  77         .arg3type = ARG_LIST,
  78         .arg3list = {
  79                 .num = 20,
  80                 .values = { MSG_OOB, MSG_PEEK, MSG_DONTROUTE, MSG_CTRUNC,
  81                             MSG_PROBE, MSG_TRUNC, MSG_DONTWAIT, MSG_EOR,
  82                             MSG_WAITALL, MSG_FIN, MSG_SYN, MSG_CONFIRM,
  83                             MSG_RST, MSG_ERRQUEUE, MSG_NOSIGNAL, MSG_MORE,
  84                             MSG_WAITFORONE, MSG_CMSG_CLOEXEC, MSG_FASTOPEN, MSG_CMSG_COMPAT },
  85         },
  86         .flags = NEED_ALARM,
  87 };
  88
  89 /*
  90  * SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg,
  91          unsigned int, vlen, unsigned int, flags,
  92          struct timespec __user *, timeout)
  93  */
  94 struct syscallentry syscall_recvmmsg = {
  95         .name = "recvmmsg",
  96         .num_args = 5,
  97         .arg1name = "fd",
  98         .arg1type = ARG_FD,
  99         .arg2name = "mmsg",
 100         .arg2type = ARG_ADDRESS,
 101         .arg3name = "vlen",
 102         .arg3type = ARG_LEN,
 103         .arg4name = "flags",
 104         .arg4type = ARG_LIST,
 105         .arg4list = {
 106                 .num = 20,
 107                 .values = { MSG_OOB, MSG_PEEK, MSG_DONTROUTE, MSG_CTRUNC,
 108                             MSG_PROBE, MSG_TRUNC, MSG_DONTWAIT, MSG_EOR,
 109                             MSG_WAITALL, MSG_FIN, MSG_SYN, MSG_CONFIRM,
 110                             MSG_RST, MSG_ERRQUEUE, MSG_NOSIGNAL, MSG_MORE,
 111                             MSG_WAITFORONE, MSG_CMSG_CLOEXEC, MSG_FASTOPEN, MSG_CMSG_COMPAT },
 112         },
 113         .arg5name = "timeout",
 114         .arg5type = ARG_ADDRESS,
 115         .flags = NEED_ALARM,
 116 };