1 files changed, 53 insertions, 0 deletions
diff --git a/tests/df/skip-rootfs.sh b/tests/df/skip-rootfs.sh
new file mode 100755
index 0000000..dad5089
--- /dev/null
+++ b/tests/df/skip-rootfs.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Test df's behavior for skipping the pseudo "rootfs" file system.
+
+# Copyright (C) 2012-2022 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ df
+
+# Protect against inaccessible remote mounts etc.
+timeout 10 df || skip_ "df fails"
+
+# Verify that rootfs is in mtab (and shown when the -a option is specified).
+# Note this is the case when /proc/self/mountinfo is parsed
+# rather than /proc/mounts.  I.e., when libmount is being used.
+df -a >out || fail=1
+grep '^rootfs' out || skip_ 'no rootfs in mtab'
+
+# Ensure that rootfs is suppressed when no options is specified.
+df >out || fail=1
+grep '^rootfs' out && { fail=1; cat out; }
+
+# Ensure that rootfs is yet skipped when explicitly specifying "-t rootfs".
+# As df emits "no file systems processed" in this case, it would be a failure
+# if df exited with status Zero.
+returns_ 1 df -t rootfs >out || fail=1
+grep '^rootfs' out && { fail=1; cat out; }
+
+# Ensure that the rootfs is shown when explicitly both specifying "-t rootfs"
+# and the -a option.
+df -t rootfs -a >out || fail=1
+grep '^rootfs' out || { fail=1; cat out; }
+
+# Ensure that the rootfs is omitted in all_fs mode when it is explicitly
+# black-listed.
+df -a -x rootfs >out || fail=1
+grep '^rootfs' out && { fail=1; cat out; }
+
+test "$fail" = 1 && dump_mount_list_
+
+Exit $fail