1  /* Copyright (C) 2002-2023 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  
      31  int
      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
      48  versioned_symbol (libc, __sem_unlink, sem_unlink, GLIBC_2_34);
      49  # if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1_1, GLIBC_2_34)
      50  compat_symbol (libpthread, __sem_unlink, sem_unlink, GLIBC_2_1_1);
      51  # endif
      52  #else /* !PTHREAD_IN_LIBC */
      53  strong_alias (__sem_unlink, sem_unlink)
      54  #endif