1/* shm_unlink -- remove a POSIX shared memory object. Generic POSIX version.
2 Copyright (C) 2001-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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 <errno.h>
20#include <shlib-compat.h>
21#include <shm-directory.h>
22#include <string.h>
23#include <unistd.h>
24
25/* Remove shared memory object. */
26int
27__shm_unlink (const char *name)
28{
29 struct shmdir_name dirname;
30 if (__shm_get_name (&dirname, name, false) != 0)
31 {
32 __set_errno (ENOENT);
33 return -1;
34 }
35
36 int result = __unlink (dirname.name);
37 if (result < 0 && errno == EPERM)
38 __set_errno (EACCES);
39 return result;
40}
41versioned_symbol (libc, __shm_unlink, shm_unlink, GLIBC_2_34);
42
43#if OTHER_SHLIB_COMPAT (librt, GLIBC_2_2, GLIBC_2_34)
44compat_symbol (libc, __shm_unlink, shm_unlink, GLIBC_2_2);
45#endif
46