[linux-pam] pam_lastlog: Do not fail on short read if btmp is corrupted.

[Tomáš Mráz]

commit 9909a2b6ab99a32853224ae8dc0bb24c018d45e7
Author: Tomas Mraz <tmraz(a)fedoraproject.org&gt;
Date:   Fri Mar 22 13:50:54 2013 +0100

    pam_lastlog: Do not fail on short read if btmp is corrupted.
    
    modules/pam_lastlog/pam_lastlog.c (last_login_failed): Just warn, not fail
    on short read or read error.

 modules/pam_lastlog/pam_lastlog.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/modules/pam_lastlog/pam_lastlog.c b/modules/pam_lastlog/pam_lastlog.c
index 50e5a59..bd454ff 100644
--- a/modules/pam_lastlog/pam_lastlog.c
+++ b/modules/pam_lastlog/pam_lastlog.c
@@ -479,6 +479,10 @@ last_login_failed(pam_handle_t *pamh, int announce, const char *user,
time_t llt
 	}
     }
 
+    if (retval != 0)
+	pam_syslog(pamh, LOG_WARNING, "corruption detected in %s", _PATH_BTMP);
+    retval = PAM_SUCCESS;
+
     if (failed) {
 	/* we want the date? */
 	if (announce & LASTLOG_DATE) {