sysdeps/unix/sysv/linux/msgrcv.c

   1 /* Copyright (C) 1995-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/msg.h>
  20 #include <ipc_priv.h>
  21 #include <sysdep-cancel.h>
  22
  23 ssize_t
  24 __libc_msgrcv (int msqid, void *msgp, size_t msgsz, long int msgtyp,
  25                int msgflg)
  26 {
  27 #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
  28   return SYSCALL_CANCEL (msgrcv, msqid, msgp, msgsz, msgtyp, msgflg);
  29 #else
  30   return SYSCALL_CANCEL (ipc, IPCOP_msgrcv, msqid, msgsz, msgflg,
  31                          MSGRCV_ARGS (msgp, msgtyp));
  32 #endif
  33 }
  34 weak_alias (__libc_msgrcv, msgrcv)