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authorCedric Le Goater <clg@fr.ibm.com>2006-10-02 02:19:00 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-02 07:57:25 -0700
commit9ec52099e4b8678a60e9f93e41ad87885d64f3e6 (patch)
treea68fe051b39f8f8e8be469cbd3c2f653b9b71a9d /drivers/char/snsc_event.c
parent1a657f78dcc8ea7c53eaa1f2a45ea2315738c15f (diff)
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[PATCH] replace cad_pid by a struct pid
There are a few places in the kernel where the init task is signaled. The ctrl+alt+del sequence is one them. It kills a task, usually init, using a cached pid (cad_pid). This patch replaces the pid_t by a struct pid to avoid pid wrap around problem. The struct pid is initialized at boot time in init() and can be modified through systctl with /proc/sys/kernel/cad_pid [ I haven't found any distro using it ? ] It also introduces a small helper routine kill_cad_pid() which is used where it seemed ok to use cad_pid instead of pid 1. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/snsc_event.c')
-rw-r--r--drivers/char/snsc_event.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
index d12d4f629cec..864854c58866 100644
--- a/drivers/char/snsc_event.c
+++ b/drivers/char/snsc_event.c
@@ -220,7 +220,7 @@ scdrv_dispatch_event(char *event, int len)
" Sending SIGPWR to init...\n");
/* give a SIGPWR signal to init proc */
- kill_proc(1, SIGPWR, 0);
+ kill_cad_pid(SIGPWR, 0);
} else {
/* print to system log */
printk("%s|$(0x%x)%s\n", severity, esp_code, desc);