1  /* Copyright (C) 2001-2023 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 <netdb.h>
      19  #include <pthread.h>
      20  #include <shlib-compat.h>
      21  #include <gai_misc.h>
      22  
      23  
      24  int
      25  __gai_cancel (struct gaicb *gaicbp)
      26  {
      27    int result = 0;
      28    int status;
      29  
      30    /* Request the mutex.  */
      31    __pthread_mutex_lock (&__gai_requests_mutex);
      32  
      33    /* Find the request among those queued but not yet running.  */
      34    status = __gai_remove_request (gaicbp);
      35    if (status == 0)
      36      result = EAI_CANCELED;
      37    else if (status > 0)
      38      result = EAI_NOTCANCELED;
      39    else
      40      result = EAI_ALLDONE;
      41  
      42    /* Release the mutex.  */
      43    __pthread_mutex_unlock (&__gai_requests_mutex);
      44  
      45    return result;
      46  }
      47  #if PTHREAD_IN_LIBC
      48  versioned_symbol (libc, __gai_cancel, gai_cancel, GLIBC_2_34);
      49  
      50  # if OTHER_SHLIB_COMPAT (libanl, GLIBC_2_2_3, GLIBC_2_34)
      51  compat_symbol (libanl, __gai_cancel, gai_cancel, GLIBC_2_2_3);
      52  # endif
      53  #else /* !PTHREAD_IN_LIBC */
      54  strong_alias (__gai_cancel, gai_cancel)
      55  #endif /* !PTHREAD_IN_LIBC */