X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fsession.c;h=491d3bfaac11c79791f5fd3eba2628aa89397a4a;hb=5dce043b4b7e32d41598442361736a927a5db5e4;hp=f9f8fc011b1b27b3098a80cec3364dfa9f2bc910;hpb=5bf6b47df03c7d16ffbebfd83d4f0b5fee146dab;p=ppp.git

diff --git a/pppd/session.c b/pppd/session.c
index f9f8fc0..491d3bf 100644
--- a/pppd/session.c
+++ b/pppd/session.c
@@ -294,9 +294,11 @@ session_start(flags, user, passwd, ttyName, msg)
 #else /* #ifdef USE_PAM */
 
 /*
- * Use the non-PAM methods directly
+ * Use the non-PAM methods directly.  'pw' will remain NULL if the user
+ * has not been authenticated using local UNIX system services.
  */
 
+    pw = NULL;
     if ((SESS_AUTH & flags)) {
 	pw = getpwnam(user);
 
@@ -362,7 +364,12 @@ session_start(flags, user, passwd, ttyName, msg)
 	logged_in = 1;
 
 #if defined(_PATH_LASTLOG) && !defined(USE_PAM)
-	{
+	/*
+	 * Enter the user in lastlog only if he has been authenticated using
+	 * local system services.  If he has not, then we don't know what his
+	 * UID might be, and lastlog is indexed by UID.
+	 */
+	if (pw != NULL) {
             struct lastlog ll;
             int fd;