Back out workaround of fixing "suspend/fg" by price of breaking "stop $$/fg".

This is real kernel bug (threads) and don't attempt to mask it by
workarounds to increase chances to fix it in the kernel.

1 files changed, 3 insertions, 1 deletions

diff --git a/usr.bin/su/su.c b/usr.bin/su/su.c
index 5e98031..6348099 100644
--- a/usr.bin/su/su.c
+++ b/usr.bin/su/su.c
@@ -128,7 +128,7 @@ main(int argc, char *argv[])
 	uid_t		ruid;
 	gid_t		gid;
 	int		asme, ch, asthem, fastlogin, prio, i, setwhat, retcode,
-			statusp, child_pid, ret_pid;
+			statusp, child_pid, child_pgrp, ret_pid;
 	char		*username, *cleanenv, *class, shellbuf[MAXPATHLEN];
 	const char	*p, *user, *shell, *mytty, **nargv;
 
@@ -329,7 +329,9 @@ main(int argc, char *argv[])
 	default:
 		while ((ret_pid = waitpid(child_pid, &statusp, WUNTRACED)) != -1) {
 			if (WIFSTOPPED(statusp)) {
+				child_pgrp = tcgetpgrp(1);
 				kill(getpid(), SIGSTOP);
+				tcsetpgrp(1, child_pgrp);
 				kill(child_pid, SIGCONT);
 				statusp = 1;
 				continue;