X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=libsysio%2Fsrc%2Freadlink.c;h=c8e74366bf63049f6191089cd76439787558e8e9;hb=e224b50dffb0e0b7aeacb1ed1d664de8b0b5748a;hp=7053c623738758e7901b9d8880b41eae506fe543;hpb=5e9021d9a3d57883ab5e915bb019e5774d364df6;p=fs%2Flustre-release.git

diff --git a/libsysio/src/readlink.c b/libsysio/src/readlink.c
index 7053c62..c8e7436 100644
--- a/libsysio/src/readlink.c
+++ b/libsysio/src/readlink.c
@@ -45,13 +45,18 @@
 #include <errno.h>
 #include <assert.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <sys/queue.h>
 
 #include "sysio.h"
 #include "inode.h"
 #include "sysio-symbols.h"
 
+#ifdef HAVE_POSIX_1003_READLINK
+ssize_t
+#else
 int
+#endif
 SYSIO_INTERFACE_NAME(readlink)(const char *path, char *buf, size_t bufsiz)
 {
 	struct intent intent;
@@ -66,14 +71,15 @@ SYSIO_INTERFACE_NAME(readlink)(const char *path, char *buf, size_t bufsiz)
 	if (err)
 		goto out;
 	ino = pno->p_base->pb_ino;
-	err = (*ino->i_ops.inop_readlink)(pno, buf, bufsiz);
-	if (err)
+	if (!S_ISLNK(ino->i_stbuf.st_mode)) {
+		err = -EINVAL;
 		goto error;
-
+	}
+	err = (*ino->i_ops.inop_readlink)(pno, buf, bufsiz);
 error:
 	P_RELE(pno);
 out:
-	SYSIO_INTERFACE_RETURN(err, err >= 0 ? 0 : err);
+	SYSIO_INTERFACE_RETURN(err < 0 ? -1 : err, err >= 0 ? 0 : err);
 }
 
 #ifdef REDSTORM