common: check user and group existence via idb4/fstests-check-user

Newer machines support the creation of users that don't appear in
/etc/passwd but are only available via nss or userdbd. Use getent passwd
to check for a users existence.

With this change I can run xfstests on systems where the users are
created via systemd-userdbd drop-ins. See the documentation in [1] and [2].

Link: [1]: https://man7.org/linux/man-pages/man8/nss-systemd.8.html
Link: [2]: https://man7.org/linux/man-pages/man5/nsswitch.conf.5.html
Signed-off-by: Christian Brauner <brauner@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/common/rc b/common/rc
index 76a7e77403..c2f844809a 100644
--- a/common/rc
+++ b/common/rc
@@ -2450,7 +2450,7 @@ _yp_active()
 _cat_passwd()
 {
 	[ $(_yp_active) -eq 0 ] && ypcat passwd
-	cat /etc/passwd
+	getent passwd
 }
 
 # cat the group file