[LTP] [PATCH v6, 1/4] lib: tst_umount: umount a mount point instead of a device

[Petr Vorel <pvorel@suse.cz>]

Hi Leo,

as I noted at forth patch, some tests use tst_umount with the default parameter.
Thus we should set the default TST_MNTPOINT to use $PWD as well.

I'd also add quotes around $mntpoint in TCONF/TINFO messages in tst_mount() as
the original message was a bit confusing when the mountpoint was called
'mntpoint' (TWARN: The mntpoint is not an absolute path).

Kind regards,
Petr

+++ testcases/lib/tst_test.sh
@@ -279,31 +279,35 @@ tst_mount()
 
 tst_umount()
 {
-	local device="${1:-$TST_DEVICE}"
+	local mntpoint="${1:-$TST_MNTPOINT}"
 	local i=0
 
-	[ -z "$device" ] && return
+	[ -z "$mntpoint" ] && return
 
-	if ! grep -q "$device" /proc/mounts; then
-		tst_res TINFO "The $device is not mounted, skipping umount"
+	if ! echo "$mntpoint" | grep -q ^/; then
+		tst_brk TCONF "The '$mntpoint' is not an absolute path"
+	fi
+
+	if ! grep -q "${mntpoint%/}" /proc/mounts; then
+		tst_res TINFO "The '$mntpoint' is not mounted upon, skipping umount"
 		return
 	fi
 
 	while [ "$i" -lt 50 ]; do
-		if umount "$device" > /dev/null; then
+		if umount "$mntpoint" > /dev/null; then
 			return
 		fi
 
 		i=$((i+1))
 
-		tst_res TINFO "umount($device) failed, try $i ..."
+		tst_res TINFO "umount($mntpoint) failed, try $i ..."
 		tst_res TINFO "Likely gvfsd-trash is probing newly mounted "\
 		              "fs, kill it to speed up tests."
 
 		tst_sleep 100ms
 	done
 
-	tst_res TWARN "Failed to umount($device) after 50 retries"
+	tst_res TWARN "Failed to umount($mntpoint) after 50 retries"
 }
 
 tst_mkfs()
@@ -628,7 +632,7 @@ tst_run()
 		cd "$TST_TMPDIR"
 	fi
 
-	TST_MNTPOINT="${TST_MNTPOINT:-mntpoint}"
+	TST_MNTPOINT="${TST_MNTPOINT:-$PWD/mntpoint}"
 	if [ "$TST_NEEDS_DEVICE" = 1 ]; then
 
 		TST_DEVICE=$(tst_device acquire)