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authorAndy Wingo <wingo@pobox.com>2009-06-19 13:01:11 +0200
committerAndy Wingo <wingo@pobox.com>2009-06-19 13:01:11 +0200
commitffca4c2203d85bc4d9e348d77053d21112e665af (patch)
tree74de2f6d886c455186ad1ebb412d10dc30c914cb /lib/readlink.c
parent5b55e29320449c8c68112129e1cadbfa7944af11 (diff)
downloadguile-ffca4c2203d85bc4d9e348d77053d21112e665af.tar.gz
gnulib-tool --import canonicalize-lgpl
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diff --git a/lib/readlink.c b/lib/readlink.c
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+/* 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