1/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <semaphore.h>
21#include <stdlib.h>
22#include <string.h>
23#include <unistd.h>
24#include "semaphoreP.h"
25#include <shm-directory.h>
26
27#if !PTHREAD_IN_LIBC
28/* The private name is not exported from libc. */
29# define __unlink unlink
30#endif
31
32int
33__sem_unlink (const char *name)
34{
35 struct shmdir_name dirname;
36 if (__shm_get_name (&dirname, name, true) != 0)
37 {
38 __set_errno (ENOENT);
39 return -1;
40 }
41
42 /* Now try removing it. */
43 int ret = __unlink (dirname.name);
44 if (ret < 0 && errno == EPERM)
45 __set_errno (EACCES);
46 return ret;
47}
48#if PTHREAD_IN_LIBC
49versioned_symbol (libc, __sem_unlink, sem_unlink, GLIBC_2_34);
50# if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1_1, GLIBC_2_34)
51compat_symbol (libpthread, __sem_unlink, sem_unlink, GLIBC_2_1_1);
52# endif
53#else /* !PTHREAD_IN_LIBC */
54strong_alias (__sem_unlink, sem_unlink)
55#endif
56