sysdeps/unix/sysv/linux/mq_unlink.c

   1 /* Copyright (C) 2004-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <mqueue.h>
  20 #include <sysdep.h>
  21 #include <shlib-compat.h>
  22
  23 /* Remove message queue named NAME.  */
  24 int
  25 __mq_unlink (const char *name)
  26 {
  27   if (name[0] != '/')
  28     return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
  29
  30   int ret = INTERNAL_SYSCALL_CALL (mq_unlink, name + 1);
  31
  32   /* While unlink can return either EPERM or EACCES, mq_unlink should
  33      return just EACCES.  */
  34   if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (ret)))
  35     {
  36       ret = INTERNAL_SYSCALL_ERRNO (ret);
  37       if (ret == EPERM)
  38         ret = EACCES;
  39       return INLINE_SYSCALL_ERROR_RETURN_VALUE (ret);
  40     }
  41
  42   return ret;
  43 }
  44 versioned_symbol (libc, __mq_unlink, mq_unlink, GLIBC_2_34);
  45 #if OTHER_SHLIB_COMPAT (librt, GLIBC_2_3_4, GLIBC_2_34)
  46 compat_symbol (libc, __mq_unlink, mq_unlink, GLIBC_2_3_4);
  47 #endif