tests: add test for suid/sgid handling in tmpfiles

diff --git a/test/TEST-22-TMPFILES/test-09.sh b/test/TEST-22-TMPFILES/test-09.sh
new file mode 100755 (executable)
index 0000000..b69abda
--- /dev/null
+++ b/test/TEST-22-TMPFILES/test-09.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+set -e
+set -x
+
+# Make sure that the "stat" output is not locale dependent.
+export LANG=C LC_ALL=C
+
+# first, create file without suid/sgid
+systemd-tmpfiles --create - <<EOF
+f     /tmp/xxx    0755 1 1 - -
+f     /tmp/yyy    0755 1 1 - -
+EOF
+
+test "$(stat -c %F:%u:%g:%a /tmp/xxx)" = "regular empty file:1:1:755"
+test "$(stat -c %F:%u:%g:%a /tmp/yyy)" = "regular empty file:1:1:755"
+
+# then, add suid/sgid
+systemd-tmpfiles --create - <<EOF
+f     /tmp/xxx    04755
+f     /tmp/yyy    02755
+EOF
+
+test "$(stat -c %F:%u:%g:%a /tmp/xxx)" = "regular empty file:1:1:4755"
+test "$(stat -c %F:%u:%g:%a /tmp/yyy)" = "regular empty file:1:1:2755"
+
+# then, chown the files to somebody else
+systemd-tmpfiles --create - <<EOF
+f     /tmp/xxx    - 2 2
+f     /tmp/yyy    - 2 2
+EOF
+
+test "$(stat -c %F:%u:%g:%a /tmp/xxx)" = "regular empty file:2:2:4755"
+test "$(stat -c %F:%u:%g:%a /tmp/yyy)" = "regular empty file:2:2:2755"
+
+# then, chown the files to a third user/group but also drop to a mask that has
+# both more and fewer bits set
+systemd-tmpfiles --create - <<EOF
+f     /tmp/xxx    0770 3 3
+f     /tmp/yyy    0770 3 3
+EOF
+
+test "$(stat -c %F:%u:%g:%a /tmp/xxx)" = "regular empty file:3:3:770"
+test "$(stat -c %F:%u:%g:%a /tmp/yyy)" = "regular empty file:3:3:770"
+
+# return to the beginning
+systemd-tmpfiles --create - <<EOF
+f     /tmp/xxx    0755 1 1 - -
+f     /tmp/yyy    0755 1 1 - -
+EOF
+
+test "$(stat -c %F:%u:%g:%a /tmp/xxx)" = "regular empty file:1:1:755"
+test "$(stat -c %F:%u:%g:%a /tmp/yyy)" = "regular empty file:1:1:755"
+
+# remove everything
+systemd-tmpfiles --remove - <<EOF
+r /tmp/xxx
+r /tmp/yyy
+EOF