[PATCH] fstests: fix argument passing to _run_fsstress and _run_fsstress_bg

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

After commit 8973af00ec21 ("fstests: cleanup fsstress process management")
test cases btrfs/007 and btrfs/284 started to fail. For example:

  $ ./check btrfs/007
  FSTYP         -- btrfs
  PLATFORM      -- Linux/x86_64 debian0 6.13.0-rc1-btrfs-next-181+ #1 SMP PREEMPT_DYNAMIC Tue Dec  3 13:03:23 WET 2024
  MKFS_OPTIONS  -- /dev/sdc
  MOUNT_OPTIONS -- /dev/sdc /home/fdmanana/btrfs-tests/scratch_1

  btrfs/007 1s ... [failed, exit status 1]- output mismatch (see /home/fdmanana/git/hub/xfstests/results//btrfs/007.out.bad)
      --- tests/btrfs/007.out	2020-06-10 19:29:03.810518987 +0100
      +++ /home/fdmanana/git/hub/xfstests/results//btrfs/007.out.bad	2024-12-10 16:09:56.345937619 +0000
      @@ -1,3 +1,4 @@
       QA output created by 007
       *** test send / receive
      -*** done
      +failed: '2097152000 200'
      +(see /home/fdmanana/git/hub/xfstests/results//btrfs/007.full for details)
      ...
      (Run 'diff -u /home/fdmanana/git/hub/xfstests/tests/btrfs/007.out /home/fdmanana/git/hub/xfstests/results//btrfs/007.out.bad'  to see the entire diff)
  Ran: btrfs/007

The problem comes from _run_fsstress and _run_fsstress_bg using $*, which
splits the string argument for the -x command used by btrfs/007, so that
fsstress gets the argument for -x as simply:

   "btrfs"

Instead of:

   "btrfs subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/base"

Fix this by using "$@" instead of $*.

Fixes: 8973af00ec21 ("fstests: cleanup fsstress process management")
Signed-off-by: Filipe Manana <fdmanana@suse.com>
---
 common/rc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common/rc b/common/rc
index 1b2e4508..f4fff59b 100644
--- a/common/rc
+++ b/common/rc
@@ -78,13 +78,13 @@ _kill_fsstress()
 _run_fsstress_bg()
 {
 	cp -f $FSSTRESS_PROG $_FSSTRESS_PROG
-	$_FSSTRESS_PROG $FSSTRESS_AVOID $* >> $seqres.full 2>&1 &
+	$_FSSTRESS_PROG $FSSTRESS_AVOID "$@" >> $seqres.full 2>&1 &
 	_FSSTRESS_PID=$!
 }
 
 _run_fsstress()
 {
-	_run_fsstress_bg $*
+	_run_fsstress_bg "$@"
 	_wait_for_fsstress
 	return $?
 }
-- 
2.45.2