diff options
Diffstat (limited to 'lib/readlink.c')
-rw-r--r-- | lib/readlink.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/readlink.c b/lib/readlink.c new file mode 100644 index 000000000..c9f49f815 --- /dev/null +++ b/lib/readlink.c @@ -0,0 +1,49 @@ +/* Stub for readlink(). + Copyright (C) 2003-2007 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include <unistd.h> + +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <stddef.h> + +#if !HAVE_READLINK + +/* readlink() substitute for systems that don't have a readlink() function, + such as DJGPP 2.03 and mingw32. */ + +/* The official POSIX return type of readlink() is ssize_t, but since here + we have no declaration in a public header file, we use 'int' as return + type. */ + +int +readlink (const char *path, char *buf, size_t bufsize) +{ + struct stat statbuf; + + /* In general we should use lstat() here, not stat(). But on platforms + without symbolic links lstat() - if it exists - would be equivalent to + stat(), therefore we can use stat(). This saves us a configure check. */ + if (stat (path, &statbuf) >= 0) + errno = EINVAL; + return -1; +} + +#endif |