From: Peng Tao <tao.peng@emc.com>
Date: Mon, 24 Sep 2012 07:17:41 +0000 (+0800)
Subject: LU-2020 sanity: test 140 should allow 40 consecutive symlink
X-Git-Tag: 2.3.55~27
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=ec9dc9e57cea7d2d750d8db1332ea6993f52028f

LU-2020 sanity: test 140 should allow 40 consecutive symlink

For kernel > 3.5, to test recursive symlink, we need real
recursive symlink.

Signed-off-by: Peng Tao <tao.peng@emc.com>
Change-Id: I4f1b834a79cdf4edb1775da45200f6fd2a680709
Reviewed-on: http://review.whamcloud.com/4079
Tested-by: Hudson
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Keith Mannthey <keith.mannthey@intel.com>
---

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index 789f3af..4675399 100644
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -7790,8 +7790,9 @@ test_140() { #bug-17379
         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 7(8KSTACK) or 8
-        local i=0
+	# VFS limits max symlink depth to 5(4KSTACK) or 7(8KSTACK) or 8
+	# For kernel > 3.5, bellow only tests consecutive symlink (MAX 40)
+	local i=0
         while i=`expr $i + 1`; do
                 mkdir -p $i || error "Creating dir $i"
                 cd $i || error "Changing to $i"
@@ -7811,7 +7812,14 @@ test_140() { #bug-17379
         done
         i=`expr $i - 1`
         echo "The symlink depth = $i"
-        [ $i -eq 5 -o $i -eq 7 -o $i -eq 8 ] || error "Invalid symlink depth"
+	[ $i -eq 5 -o $i -eq 7 -o $i -eq 8 -o $i -eq 40 ] ||
+					error "Invalid symlink depth"
+
+	# Test recursive symlink
+	ln -s symlink_self symlink_self
+	$OPENFILE -f O_RDONLY symlink_self >/dev/null 2>&1; ret=$?
+	echo "open symlink_self returns $ret"
+	[ $ret -eq 40 ] || error "recursive symlink doesn't return -ELOOP"
 }
 run_test 140 "Check reasonable stack depth (shouldn't LBUG) ===="