Comment # 28 on bug 1174593 from Josef M�llers

(In reply to Josef M�llers from comment #26)

> Hm ... when collecting this stuff, it occurred to me that pam_xauth could
> retrieve the old user name prior to calling pam_get_user() ... stay tuned ...



No show:
pam_syslog(pamh, LOG_NOTICE, "Getting old user name");
-> Getting old user name
if (pam_get_item(pamh, PAM_USER, &old_username) != PAM_SUCCESS) {
:
}
pam_syslog(pamh, LOG_NOTICE, "old user name=%s", old_username);
-> old user name=root

There is next to nothing preceding this (just some options parsing), so
PAM_USER is already set to root and pam_xauth will have a hard time finding the
invoking user.

So best discuss this with sudo's bugwoner:
Krist�na Streitov� <kstreitova@suse.com>