From: Evgeny Grin (Karlson2k) <k2k@drgrin.dev>
Date: Thu, 10 Jul 2025 16:12:29 +0000 (+0200)
Subject: lib/utmp.c: check parent PID too when looking for utmp entry
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=9195f3807dfaa2062bcb8f79c61efc1e1f6dba46;p=thirdparty%2Fshadow.git

lib/utmp.c: check parent PID too when looking for utmp entry

'login' binary may fork itself before this check, so the entry may
contain parent PID instead of current process PID
---

diff --git a/lib/utmp.c b/lib/utmp.c
index ff886354a..44f0301f4 100644
--- a/lib/utmp.c
+++ b/lib/utmp.c
@@ -157,7 +157,8 @@ get_current_utmp(void)
 
 	/* First, try to find a valid utmp entry for this process.  */
 	while ((ut = getutxent()) != NULL) {
-		if (   (ut->ut_pid == getpid ())
+		if (   (   (ut->ut_pid == getpid ())
+		        || (ut->ut_pid == getppid ()))
 		    && ('\0' != ut->ut_id[0])
 		    && (   (LOGIN_PROCESS == ut->ut_type)
 		        || (USER_PROCESS  == ut->ut_type))