1 /* Stub for readlink().
2 Copyright (C) 2003-2006 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 2, or (at your option)
7 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, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
17
18 #include <config.h>
19
20 #include <errno.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <stddef.h>
24
25 #if !HAVE_READLINK
26
27 /* readlink() substitute for systems that don't have a readlink() function,
28 such as DJGPP 2.03 and mingw32. */
29
30 /* The official POSIX return type of readlink() is ssize_t, but since here
31 we have no declaration in a public header file, we use 'int' as return
32 type. */
33
34 int
readlink(const char * path,char * buf,size_t bufsize)35 readlink (const char *path, char *buf, size_t bufsize)
36 {
37 struct stat statbuf;
38
39 /* In general we should use lstat() here, not stat(). But on platforms
40 without symbolic links lstat() - if it exists - would be equivalent to
41 stat(), therefore we can use stat(). This saves us a configure check. */
42 if (stat (path, &statbuf) >= 0)
43 errno = EINVAL;
44 return -1;
45 }
46
47 #endif
48