RHEL gating tests: more journald exceptions

Followup to #8284, due to my not having noticed #8096.

RHEL gating tests are failing again due to rhbz#1895105, the
one where we can't run journalctl rootless on RHEL. #8284 fixed
this for some RHEL builds of older podman, but I missed #8096
which added yet another logs test.

This brings us to three journalctl exceptions, which means
it gets complicated because I have to refactor it all.

**THIS IS NOT SUSTAINABLE**. We need some way to have a similar
setup in CI, with a permission-less rootless login, so we don't
add yet another logs test some day and discover, months later,
that it doesn't work on RHEL and then have to go into crisis
mode.

Signed-off-by: Ed Santiago <santiago@redhat.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/test/system/helpers.bash b/test/system/helpers.bash
index 6a7c6cc42..f782de080 100644
--- a/test/system/helpers.bash
+++ b/test/system/helpers.bash
@@ -259,6 +259,31 @@ function is_cgroupsv2() {
     test "$cgroup_type" = "cgroup2fs"
 }
 
+# rhbz#1895105: rootless journald is unavailable except to users in
+# certain magic groups; which our testuser account does not belong to
+# (intentional: that is the RHEL default, so that's the setup we test).
+function journald_unavailable() {
+    if ! is_rootless; then
+        # root must always have access to journal
+        return 1
+    fi
+
+    run journalctl -n 1
+    if [[ $status -eq 0 ]]; then
+        return 1
+    fi
+
+    if [[ $output =~ permission ]]; then
+        return 0
+    fi
+
+    # This should never happen; if it does, it's likely that a subsequent
+    # test will fail. This output may help track that down.
+    echo "WEIRD: 'journalctl -n 1' failed with a non-permission error:"
+    echo "$output"
+    return 1
+}
+
 ###########################
 #  _add_label_if_missing  #  make sure skip messages include rootless/remote
 ###########################
@@ -315,6 +340,15 @@ function skip_if_cgroupsv1() {
     fi
 }
 
+##################################
+#  skip_if_journald_unavailable  #  rhbz#1895105: rootless journald permissions
+##################################
+function skip_if_journald_unavailable {
+    if journald_unavailable; then
+        skip "Cannot use rootless journald on this system"
+    fi
+}
+
 #########
 #  die  #  Abort with helpful message
 #########