areadlink.c

/* areadlink.c -- readlink wrapper to return the link name in malloc'd storage
 * Unlike xreadlink and xreadlink_with_size, don't ever call exit.
 *
 * Copyright (C) 2001, 2003-2007, 2009-2012 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 "areadlink.h"

#include "careadlinkat.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 allocation fails, or if the link value is longer than SIZE_MAX (ha),
 * return NULL and set errno to ENOMEM.
 */
char *
areadlink(char const *filename)
{
  return careadlinkat(AT_FDCWD, filename, NULL, (size_t)0UL, NULL,
					  careadlinkatcwd);
}

/* EOF */