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 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