From 3fc3a07a03ef74fde99db40ce9ef43ccab336205 Mon Sep 17 00:00:00 2001

From: MertsA <andrewmerts@gmail.com>

Date: Fri, 23 Jul 2021 03:36:05 -0700

Subject: [PATCH] Rewind utmp file pointer after searching for entry

getutline() advances the file pointer until it matches or reaches EOF. pututline() starts from the current position in utmp. This rewinds the file pointer to the beginning to avoid allocating additional spurious utmp entries.

---

 src/utmp.c | 1 +

 1 file changed, 1 insertion(+)

diff --git a/src/utmp.c b/src/utmp.c

index 544a37519..952bf3043 100644

--- a/src/utmp.c

+++ b/src/utmp.c

@@ -210,6 +210,7 @@ utmp_login(const char *from_line, const char *to_line, int ttyfd,

 	memset(&utbuf, 0, sizeof(utbuf));

 	strncpy(utbuf.ut_line, from_line, sizeof(utbuf.ut_line));

 	ut_old = sudo_getutline(&utbuf);

+	sudo_setutent();

     }

     utmp_fill(to_line, user, ut_old, &utbuf);

     if (sudo_pututline(&utbuf) != NULL)