Return to readlink.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libiconv / srclib

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

1.1       misho       1: /* Stub for readlink().
                      2:    Copyright (C) 2003-2007 Free Software Foundation, Inc.
                      3: 
                      4:    This program is free software: you can redistribute it and/or modify
                      5:    it under the terms of the GNU General Public License as published by
                      6:    the Free Software Foundation; either version 3 of the License, or
                      7:    (at your option) any later version.
                      8: 
                      9:    This program 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
                     12:    GNU General Public License for more details.
                     13: 
                     14:    You should have received a copy of the GNU General Public License
                     15:    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
                     16: 
                     17: #include <config.h>
                     18: 
                     19: /* Specification.  */
                     20: #include <unistd.h>
                     21: 
                     22: #include <errno.h>
                     23: #include <sys/types.h>
                     24: #include <sys/stat.h>
                     25: #include <stddef.h>
                     26: 
                     27: #if !HAVE_READLINK
                     28: 
                     29: /* readlink() substitute for systems that don't have a readlink() function,
                     30:    such as DJGPP 2.03 and mingw32.  */
                     31: 
                     32: /* The official POSIX return type of readlink() is ssize_t, but since here
                     33:    we have no declaration in a public header file, we use 'int' as return
                     34:    type.  */
                     35: 
                     36: int
                     37: readlink (const char *path, char *buf, size_t bufsize)
                     38: {
                     39:   struct stat statbuf;
                     40: 
                     41:   /* In general we should use lstat() here, not stat().  But on platforms
                     42:      without symbolic links lstat() - if it exists - would be equivalent to
                     43:      stat(), therefore we can use stat().  This saves us a configure check.  */
                     44:   if (stat (path, &statbuf) >= 0)
                     45:     errno = EINVAL;
                     46:   return -1;
                     47: }
                     48: 
                     49: #endif