kc3-lang/gnulib/lib/acl_entries.c

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• Hash : 281b825e
  Author :
  Date : 2018-01-01T00:57:25
  

  maint: Run 'make update-copyright'
  

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• lib/acl_entries.c

• /* Return the number of entries in an ACL.
  
     Copyright (C) 2002-2003, 2005-2018 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  
     Written by Paul Eggert and Andreas Gruenbacher.  */
  
  #include <config.h>
  
  #include "acl-internal.h"
  
  /* This file assumes POSIX-draft like ACLs
     (Linux, FreeBSD, Mac OS X, IRIX, Tru64).  */
  
  /* Return the number of entries in ACL.
     Return -1 and set errno upon failure to determine it.  */
  
  int
  acl_entries (acl_t acl)
  {
    int count = 0;
  
    if (acl != NULL)
      {
  #if HAVE_ACL_FIRST_ENTRY /* Linux, FreeBSD, Mac OS X */
  # if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
        /* acl_get_entry returns 0 when it successfully fetches an entry,
           and -1/EINVAL at the end.  */
        acl_entry_t ace;
        int got_one;
  
        for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace);
             got_one >= 0;
             got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace))
          count++;
  # else /* Linux, FreeBSD */
        /* acl_get_entry returns 1 when it successfully fetches an entry,
           and 0 at the end.  */
        acl_entry_t ace;
        int got_one;
  
        for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace);
             got_one > 0;
             got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace))
          count++;
        if (got_one < 0)
          return -1;
  # endif
  #else /* IRIX, Tru64 */
  # if HAVE_ACL_TO_SHORT_TEXT /* IRIX */
        /* Don't use acl_get_entry: it is undocumented.  */
        count = acl->acl_cnt;
  # endif
  # if HAVE_ACL_FREE_TEXT /* Tru64 */
        /* Don't use acl_get_entry: it takes only one argument and does not
           work.  */
        count = acl->acl_num;
  # endif
  #endif
      }
  
    return count;
  }
  

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