svn commit: r308034 - stable/11/sbin/init

[Konstantin Belousov]

Author: kib
Date: Fri Oct 28 12:55:14 2016
New Revision: 308034
URL: https://svnweb.freebsd.org/changeset/base/308034

Log:
  MFC r306807:
  When making a pause after detecting hard kill of the single-user
  shell, ensure that we do sleep for at least the specified time, in
  presence of signals.

Modified:
  stable/11/sbin/init/init.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sbin/init/init.c
==============================================================================
--- stable/11/sbin/init/init.c	Fri Oct 28 12:46:38 2016	(r308033)
+++ stable/11/sbin/init/init.c	Fri Oct 28 12:55:14 2016	(r308034)
@@ -870,6 +870,7 @@ single_user(void)
 	sigset_t mask;
 	const char *shell;
 	char *argv[2];
+	struct timeval tv, tn;
 #ifdef SECURE
 	struct ttyent *typ;
 	struct passwd *pp;
@@ -1002,7 +1003,14 @@ single_user(void)
 			 *  reboot(8) killed shell?
 			 */
 			warning("single user shell terminated.");
-			sleep(STALL_TIMEOUT);
+			gettimeofday(&tv, NULL);
+			tn = tv;
+			tv.tv_sec += STALL_TIMEOUT;
+			while (tv.tv_sec > tn.tv_sec || (tv.tv_sec ==
+			    tn.tv_sec && tv.tv_usec > tn.tv_usec)) {
+				sleep(1);
+				gettimeofday(&tn, NULL);
+			}
 			_exit(0);
 		} else {
 			warning("single user shell terminated, restarting");