1/* Copyright (C) 2002-2022 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 <semaphore.h>
20#include <stdlib.h>
21#include <string.h>
22#include <unistd.h>
23#include "semaphoreP.h"
24#include <shm-directory.h>
25
26#if !PTHREAD_IN_LIBC
27/* The private name is not exported from libc. */
28# define __unlink unlink
29#endif
30
31int
32__sem_unlink (const char *name)
33{
34 struct shmdir_name dirname;
35 if (__shm_get_name (&dirname, name, true) != 0)
36 {
37 __set_errno (ENOENT);
38 return -1;
39 }
40
41 /* Now try removing it. */
42 int ret = __unlink (dirname.name);
43 if (ret < 0 && errno == EPERM)
44 __set_errno (EACCES);
45 return ret;
46}
47#if PTHREAD_IN_LIBC
48versioned_symbol (libc, __sem_unlink, sem_unlink, GLIBC_2_34);
49# if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1_1, GLIBC_2_34)
50compat_symbol (libpthread, __sem_unlink, sem_unlink, GLIBC_2_1_1);
51# endif
52#else /* !PTHREAD_IN_LIBC */
53strong_alias (__sem_unlink, sem_unlink)
54#endif
55