From fb98e67d33ca59b065f03f63f4d08d51f7a4c3d2 Mon Sep 17 00:00:00 2001
From: yangsheng <yangsheng>
Date: Fri, 31 Oct 2008 08:18:09 +0000
Subject: [PATCH] Branch b1_6 b=17379 i=adilger, johann
Test case for recursive symlink.
---
lustre/tests/sanity.sh | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index e830e8c057..656f847045 100644
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -5481,6 +5481,36 @@ test_130e() {
}
run_test 130e "FIEMAP (test continuation FIEMAP calls)"
+test_140() { #bug-17379
+ mkdir -p $DIR/$tdir || error "Creating dir $DIR/$tdir"
+ cd $DIR/$tdir || error "Changing to $DIR/$tdir"
+ cp /usr/bin/stat . || error "Copying stat to $DIR/$tdir"
+
+ # VFS limits max symlink depth to 5(4KSTACK) or 8
+ local i=0
+ while i=`expr $i + 1`; do
+ mkdir -p $i || error "Creating dir $i"
+ cd $i || error "Changing to $i"
+ ln -s ../stat stat || error "Creating stat symlink"
+ # Read the symlink until ELOOP present,
+ # not LBUGing the system is considered success,
+ # we didn't overrun the stack.
+ $OPENFILE -f O_RDONLY stat >/dev/null 2>&1; ret=$?
+ [ $ret -ne 0 ] && {
+ if [ $ret -eq 40 ]; then
+ break # -ELOOP
+ else
+ error "Open stat symlink"
+ return
+ fi
+ }
+ done
+ i=`expr $i - 1`
+ [ $i -eq 5 -o $i -eq 8 ] || error "Invalid symlink depth"
+ echo "The symlink depth = $i"
+}
+run_test 140 "Check reasonable stack depth (shouldn't LBUG) ===="
+
TMPDIR=$OLDTMPDIR
TMP=$OLDTMP
HOME=$OLDHOME
--
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