Filemon: Attach from the child to avoid racing with the parent attach.

This is the same as how the bmake filemon usage works.

This also fixes failed attach not properly flushing the TTY.

MFC after:	1 week
Relnotes:	yes
Sponsored by:	EMC / Isilon Storage Division

1 files changed, 10 insertions, 4 deletions

diff --git a/usr.bin/script/script.c b/usr.bin/script/script.c
index 72814fbe17ad..49446ef730ab 100644
--- a/usr.bin/script/script.c
+++ b/usr.bin/script/script.c
@@ -224,13 +224,19 @@ main(int argc, char *argv[])
 		warn("fork");
 		done(1);
 	}
-	if (child == 0)
+	if (child == 0) {
+		if (fflg) {
+			int pid;
+
+			pid = getpid();
+			if (ioctl(fm_fd, FILEMON_SET_PID, &pid) < 0)
+				err(1, "Cannot set filemon PID");
+		}
+
 		doshell(argv);
+	}
 	close(slave);
 
-	if (fflg && ioctl(fm_fd, FILEMON_SET_PID, &child) < 0)
-		err(1, "Cannot set filemon PID");
-
 	start = tvec = time(0);
 	readstdin = 1;
 	for (;;) {