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authorSukadev Bhattiprolu <sukadev@us.ibm.com>2006-09-29 05:00:07 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 12:18:12 -0400
commitf400e198b2ed26ce55b22a1412ded0896e7516ac (patch)
treea3d78bfc1c20635e199fe0fe85aaa1d8792acc58 /kernel/exit.c
parent959ed340f4867fda7684340625f60e211c2296d6 (diff)
[PATCH] pidspace: is_init()
This is an updated version of Eric Biederman's is_init() patch. (http://lkml.org/lkml/2006/2/6/280). It applies cleanly to 2.6.18-rc3 and replaces a few more instances of ->pid == 1 with is_init(). Further, is_init() checks pid and thus removes dependency on Eric's other patches for now. Eric's original description: There are a lot of places in the kernel where we test for init because we give it special properties. Most significantly init must not die. This results in code all over the kernel test ->pid == 1. Introduce is_init to capture this case. With multiple pid spaces for all of the cases affected we are looking for only the first process on the system, not some other process that has pid == 1. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Serge Hallyn <serue@us.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: <lxc-devel@lists.sourceforge.net> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 4b6fb054b25d..9961192d6055 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -219,7 +219,7 @@ static int will_become_orphaned_pgrp(int pgrp, struct task_struct *ignored_task)
219 do_each_task_pid(pgrp, PIDTYPE_PGID, p) { 219 do_each_task_pid(pgrp, PIDTYPE_PGID, p) {
220 if (p == ignored_task 220 if (p == ignored_task
221 || p->exit_state 221 || p->exit_state
222 || p->real_parent->pid == 1) 222 || is_init(p->real_parent))
223 continue; 223 continue;
224 if (process_group(p->real_parent) != pgrp 224 if (process_group(p->real_parent) != pgrp
225 && p->real_parent->signal->session == p->signal->session) { 225 && p->real_parent->signal->session == p->signal->session) {