| /* xreadlink.c -- readlink wrapper to return the link name in malloc'd storage |
| |
| Copyright (C) 2001, 2003-2007, 2009-2011 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 <http://www.gnu.org/licenses/>. */ |
| |
| /* Written by Jim Meyering <jim@meyering.net> |
| and Bruno Haible <bruno@clisp.org>. */ |
| |
| #include <config.h> |
| |
| /* Specification. */ |
| #include "xreadlink.h" |
| |
| #include <errno.h> |
| |
| #include "areadlink.h" |
| #include "xalloc.h" |
| |
| /* Call readlink to get the symbolic link value of FILENAME. |
| Return a pointer to that NUL-terminated string in malloc'd storage. |
| If readlink fails, return NULL and set errno. |
| If realloc fails, or if the link value is longer than SIZE_MAX :-), |
| give a diagnostic and exit. */ |
| |
| char * |
| xreadlink (char const *filename) |
| { |
| char *result = areadlink (filename); |
| if (result == NULL && errno == ENOMEM) |
| xalloc_die (); |
| return result; |
| } |