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authorJuerg Haefliger <juerg.haefliger@canonical.com>2019-02-25 14:14:50 +0100
committerShuah Khan <shuah@kernel.org>2019-02-25 07:48:01 -0700
commit0e27ded1159f62ab1a4e723796246bd5b1793b93 (patch)
treeee1b8c0d95d430195f3cf3c1265d5b6c3dec23fb /tools/testing/selftests/ftrace
parentselftests/ftrace: Replace \e with \033 (diff)
downloadwireguard-linux-0e27ded1159f62ab1a4e723796246bd5b1793b93.tar.xz
wireguard-linux-0e27ded1159f62ab1a4e723796246bd5b1793b93.zip
selftests/ftrace: Handle the absence of tput
In environments where tput is not available, we get the following error $ ./ftracetest: 163: [: Illegal number: because ncolors is an empty string. Fix that by setting it to 0 if the tput command fails. Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Juerg Haefliger <juergh@canonical.com> Signed-off-by: Shuah Khan <shuah@kernel.org>
Diffstat (limited to 'tools/testing/selftests/ftrace')
-rwxr-xr-xtools/testing/selftests/ftrace/ftracetest4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
index 316f2bf7099c..136387422b00 100755
--- a/tools/testing/selftests/ftrace/ftracetest
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -154,13 +154,13 @@ fi
# Define text colors
# Check available colors on the terminal, if any
-ncolors=`tput colors 2>/dev/null`
+ncolors=`tput colors 2>/dev/null || echo 0`
color_reset=
color_red=
color_green=
color_blue=
# If stdout exists and number of colors is eight or more, use them
-if [ -t 1 -a "$ncolors" -a "$ncolors" -ge 8 ]; then
+if [ -t 1 -a "$ncolors" -ge 8 ]; then
color_reset="\033[0m"
color_red="\033[31m"
color_green="\033[32m"