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Annotation of embedaddon/libiconv/srclib/xreadlink.c, revision 1.1.1.1

1.1       misho       1: /* xreadlink.c -- readlink wrapper to return the link name in malloc'd storage
                      2: 
                      3:    Copyright (C) 2001, 2003-2007 Free Software Foundation, Inc.
                      4: 
                      5:    This program is free software: you can redistribute it and/or modify
                      6:    it under the terms of the GNU General Public License as published by
                      7:    the Free Software Foundation; either version 3 of the License, or
                      8:    (at your option) any later version.
                      9: 
                     10:    This program 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
                     13:    GNU General Public License for more details.
                     14: 
                     15:    You should have received a copy of the GNU General Public License
                     16:    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
                     17: 
                     18: /* Written by Jim Meyering <jim@meyering.net>
                     19:    and Bruno Haible <bruno@clisp.org>.  */
                     20: 
                     21: #include <config.h>
                     22: 
                     23: /* Specification.  */
                     24: #include "xreadlink.h"
                     25: 
                     26: #include <errno.h>
                     27: 
                     28: #include "areadlink.h"
                     29: #include "xalloc.h"
                     30: 
                     31: /* Call readlink to get the symbolic link value of FILENAME.
                     32:    Return a pointer to that NUL-terminated string in malloc'd storage.
                     33:    If readlink fails, return NULL and set errno.
                     34:    If realloc fails, or if the link value is longer than SIZE_MAX :-),
                     35:    give a diagnostic and exit.  */
                     36: 
                     37: char *
                     38: xreadlink (char const *filename)
                     39: {
                     40:   char *result = areadlink (filename);
                     41:   if (result == NULL && errno == ENOMEM)
                     42:     xalloc_die ();
                     43:   return result;
                     44: }