system tests: new tests for run, exec

 - Issue #6735 : problem with multiple namespaces; confirms
   combinations of --userns=keep-id, --privileged, --user=XX

 - Issue #6829 : --userns=keep-id will add a /etc/passwd entry

 - Issue #6593 : podman exec, with --userns=keep-id, errors
   (test is currently skipped because issue remains live)

...and, addendum: add new helper function, remove_same_dev_warning.
Some CI systems issue a warning on podman run --privileged:

   WARNING: The same type, major and minor should not be used for multiple devices.

We already had special-case code to ignore than in the SELinux
test, but now we're seeing it in the new run tests I added, so
I've refactored the "ignore this warning" code and written
tests for the removal code.

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

1 files changed, 32 insertions, 0 deletions

diff --git a/test/system/helpers.bash b/test/system/helpers.bash
index 5301644d6..4239ef876 100644
--- a/test/system/helpers.bash
+++ b/test/system/helpers.bash
@@ -392,5 +392,37 @@ function find_exec_pid_files() {
         find $storage_path -type f -iname 'exec_pid_*'
     fi
 }
+
+
+#############################
+#  remove_same_dev_warning  #  Filter out useless warning from output
+#############################
+#
+# On some CI systems, 'podman run --privileged' emits a useless warning:
+#
+#    WARNING: The same type, major and minor should not be used for multiple devices.
+#
+# This obviously screws us up when we look at output results.
+#
+# This function removes the warning from $output and $lines
+#
+function remove_same_dev_warning() {
+    # No input arguments. We operate in-place on $output and $lines
+
+    local i=0
+    local -a new_lines=()
+    while [[ $i -lt ${#lines[@]} ]]; do
+        if expr "${lines[$i]}" : 'WARNING: .* same type, major.* multiple' >/dev/null; then
+            :
+        else
+            new_lines+=("${lines[$i]}")
+        fi
+        i=$(( i + 1 ))
+    done
+
+    lines=("${new_lines[@]}")
+    output=$(printf '%s\n' "${lines[@]}")
+}
+
 # END   miscellaneous tools
 ###############################################################################