From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Mon, 3 Feb 2020 20:56:43 +0000 (-0500)
Subject: BACKPORT: Tests: fix: test_relayd_working_directory fails as root
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=50bb83e49b3b3d31f2c7dd1f6b6781bc976aca2b

BACKPORT: Tests: fix: test_relayd_working_directory fails as root

From the original bug report:

This test succeeds as user, but fails as root:
not ok 23 - Warning about missing write permission is present

    Failed test 'Warning about missing write permission is present'
    in tools/working-directory/test_relayd_working_directory:test_relayd_debug_permission() at line 182.

The warning does not trigger because root always has access.

Skip this test since the permission check will succeed and the relay
daemon won't produce the expected error message.

Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I4eb29958aaca78405e1fdd2392d73472af0d5912
---

diff --git a/tests/regression/tools/working-directory/test_relayd_working_directory b/tests/regression/tools/working-directory/test_relayd_working_directory
index 956cb780a..91f2e5eea 100755
--- a/tests/regression/tools/working-directory/test_relayd_working_directory
+++ b/tests/regression/tools/working-directory/test_relayd_working_directory
@@ -156,35 +156,46 @@ function test_relayd_background_no_working_dir()
 
 function test_relayd_debug_permission()
 {
-	local output_pattern='Working directory \".*\" is not writable'
-	local working_dir
-	local cwd
-	local pid
-
-	working_dir=$(realpath "$(mktemp -d)")
+	local is_user
 
 	diag "Test lttng-relayd change working directory on non writable directory"
 
-	# Removing write access to working dir
-	okx chmod -w "$working_dir"
+	if [ "$(id -u)" == "0" ]; then
+	    is_user=0
+	else
+	    is_user=1
+	fi
 
-	# Redirect the error output to a temporary file
-	ERROR_OUTPUT_DEST=$(mktemp)
-	start_lttng_relayd_opt 1 "-b" "-v --working-dir $working_dir"
+	skip $is_user "Skipping permission debug output test; operation can't fail as root" 6 ||
+	{
+		local output_pattern='Working directory \".*\" is not writable'
+		local working_dir
+		local cwd
+		local pid
 
-	pid=$(pgrep "$RELAYD_MATCH")
-	ok $? "Found lttng-relayd"
+		working_dir=$(realpath "$(mktemp -d)")
 
-	cwd=$(readlink "/proc/${pid}/cwd")
-	is "$cwd" "$working_dir" "Working directory changed"
+		# Removing write access to working dir
+		okx chmod -w "$working_dir"
 
-	grep -q "$output_pattern" "$ERROR_OUTPUT_DEST"
-	ok $? "Warning about missing write permission is present"
+		# Redirect the error output to a temporary file
 
-	stop_lttng_relayd
-	rm "$ERROR_OUTPUT_DEST"
-	rm -rf "$working_dir" "$ERROR_OUTPUT_DEST"
-	ERROR_OUTPUT_DEST=/dev/null
+		ERROR_OUTPUT_DEST=$(mktemp) start_lttng_relayd_opt 1 "-b" "-v --working-dir $working_dir"
+
+		pid=$(pgrep "$RELAYD_MATCH")
+		ok $? "Found lttng-relayd"
+
+		cwd=$(readlink "/proc/${pid}/cwd")
+		is "$cwd" "$working_dir" "Working directory changed"
+
+		grep -q "$output_pattern" "$ERROR_OUTPUT_DEST"
+		ok $? "Warning about missing write permission is present"
+
+		stop_lttng_relayd
+		rm "$ERROR_OUTPUT_DEST"
+		rm -rf "$working_dir" "$ERROR_OUTPUT_DEST"
+		ERROR_OUTPUT_DEST=/dev/null
+	}
 }
 
 function test_relayd_failure()