sysdeps/unix/sysv/linux/shmdt.c

   1 /* Copyright (C) 1995-2021 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <ipc_priv.h>
  20 #include <sysdep.h>
  21 #include <errno.h>
  22
  23 /* Detach shared memory segment starting at address specified by SHMADDR
  24    from the caller's data segment.  */
  25
  26 int
  27 shmdt (const void *shmaddr)
  28 {
  29 #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
  30   return INLINE_SYSCALL_CALL (shmdt, shmaddr);
  31 #else
  32   return INLINE_SYSCALL_CALL (ipc, IPCOP_shmdt, 0, 0, 0, shmaddr);
  33 #endif
  34 }