[PATCH tip/core/rcu 11/20] rcutorture/kvm-recheck-*: Improve result directory readability check

[Paul E. McKenney]

From: SeongJae Park <sj38.park@xxxxxxxxx>

The kvm-recheck-(lock|rcu|rcuperf).sh scripts check whether the
user-specified results directory exists.  If not, it prints out error
message that says the specified directory is unreadable.  To make the
message more precise, this commit adds a readability check.

Fixes: 2193e1604eac ("rcutorture: Abstract kvm-recheck.sh")

Signed-off-by: SeongJae Park <sj38.park@xxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh    | 2 +-
 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh     | 2 +-
 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh
index 43f764098e50..2de92f43ee8c 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh
@@ -23,7 +23,7 @@
 # Authors: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
 
 i="$1"
-if test -d $i
+if test -d "$i" -a -r "$i"
 then
 	:
 else
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh
index 559e01ac86be..9e34656bf659 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh
@@ -23,7 +23,7 @@
 # Authors: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
 
 i="$1"
-if test -d $i
+if test -d "$i" -a -r "$i"
 then
 	:
 else
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
index 8f3121afc716..6138fd94abfe 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
@@ -23,7 +23,7 @@
 # Authors: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
 
 i="$1"
-if test -d $i
+if test -d "$i" -a -r "$i"
 then
 	:
 else
-- 
2.5.2