From 3e7cd6c413c9e6fbb5e1ee2acdadb4ababd2d474 Mon Sep 17 00:00:00 2001 From: Eric W. Biederman Date: Mon, 12 Feb 2007 00:52:58 -0800 Subject: [PATCH] pid: replace is_orphaned_pgrp with is_current_pgrp_orphaned Every call to is_orphaned_pgrp passed in process_group(current) which is racy with respect to another thread changing our process group. It didn't bite us because we were dealing with integers and the worse we would get would be a stale answer. In switching the checks to use struct pid to be a little more efficient and prepare the way for pid namespaces this race became apparent. So I simplified the calls to the more specialized is_current_pgrp_orphaned so I didn't have to worry about making logic changes to avoid the race. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/tty.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/tty.h') diff --git a/include/linux/tty.h b/include/linux/tty.h index 0a10a4e7bbc3..d0e03c4a71b1 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -303,7 +303,7 @@ extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp, int buflen); extern void tty_write_message(struct tty_struct *tty, char *msg); -extern int is_orphaned_pgrp(int pgrp); +extern int is_current_pgrp_orphaned(void); extern int is_ignored(int sig); extern int tty_signal(int sig, struct tty_struct *tty); extern void tty_hangup(struct tty_struct * tty); -- cgit v1.2.3