X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=libsysio%2Fsrc%2Freadlink.c;h=c8e74366bf63049f6191089cd76439787558e8e9;hb=e224b50dffb0e0b7aeacb1ed1d664de8b0b5748a;hp=f08374482870869482914e7e4e12ca96b9b4bc72;hpb=b6298eaa3e08a581a7bbc5a4ee95c1f07401dfb5;p=fs%2Flustre-release.git

diff --git a/libsysio/src/readlink.c b/libsysio/src/readlink.c
index f083744..c8e7436 100644
--- a/libsysio/src/readlink.c
+++ b/libsysio/src/readlink.c
@@ -45,6 +45,7 @@
 #include <errno.h>
 #include <assert.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <sys/queue.h>
 
 #include "sysio.h"
@@ -70,14 +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