| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 17 Jan 2007 10:49:33 +0100
From: Sébastien Dugué <sebastien.dugue@...l.net>
To: linux-kernel <linux-kernel@...r.kernel.org>
Cc: Andrew Morton <akpm@...l.org>, linux-aio <linux-aio@...ck.org>,
Bharata B Rao <bharata@...ibm.com>,
Christoph Hellwig <hch@...radead.org>,
Suparna Bhattacharya <suparna@...ibm.com>,
Ulrich Drepper <drepper@...hat.com>,
Zach Brown <zach.brown@...cle.com>,
Jean Pierre Dion <jean-pierre.dion@...l.net>,
Badari Pulavarty <pbadari@...ibm.com>
Subject: [PATCH -mm 3/5][AIO] - Make good_sigevent non-static
Make good_sigevent() non-static
Move good_sigevent() from posix-timers.c to signal.c where it belongs,
and make it non-static so that it can be used by other subsystems.
include/linux/signal.h | 1 +
kernel/posix-timers.c | 17 -----------------
kernel/signal.c | 24 ++++++++++++++++++++++++
3 files changed, 25 insertions(+), 17 deletions(-)
Signed-off-by: Sébastien Dugué <sebastien.dugue@...l.net>
Index: linux-2.6.20-rc4-mm1/include/linux/signal.h
===================================================================
--- linux-2.6.20-rc4-mm1.orig/include/linux/signal.h 2007-01-12 11:40:30.000000000 +0100
+++ linux-2.6.20-rc4-mm1/include/linux/signal.h 2007-01-12 12:15:06.000000000 +0100
@@ -240,6 +240,7 @@ extern int sigprocmask(int, sigset_t *,
struct pt_regs;
extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie);
+extern struct task_struct * good_sigevent(sigevent_t *);
extern struct kmem_cache *sighand_cachep;
Index: linux-2.6.20-rc4-mm1/kernel/posix-timers.c
===================================================================
--- linux-2.6.20-rc4-mm1.orig/kernel/posix-timers.c 2007-01-12 11:40:39.000000000 +0100
+++ linux-2.6.20-rc4-mm1/kernel/posix-timers.c 2007-01-12 12:15:06.000000000 +0100
@@ -367,23 +367,6 @@ static enum hrtimer_restart posix_timer_
return ret;
}
-static struct task_struct * good_sigevent(sigevent_t * event)
-{
- struct task_struct *rtn = current->group_leader;
-
- if ((event->sigev_notify & SIGEV_THREAD_ID ) &&
- (!(rtn = find_task_by_pid(event->sigev_notify_thread_id)) ||
- rtn->tgid != current->tgid ||
- (event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_SIGNAL))
- return NULL;
-
- if (((event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) &&
- ((event->sigev_signo <= 0) || (event->sigev_signo > SIGRTMAX)))
- return NULL;
-
- return rtn;
-}
-
void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock)
{
if ((unsigned) clock_id >= MAX_CLOCKS) {
Index: linux-2.6.20-rc4-mm1/kernel/signal.c
===================================================================
--- linux-2.6.20-rc4-mm1.orig/kernel/signal.c 2007-01-12 11:40:39.000000000 +0100
+++ linux-2.6.20-rc4-mm1/kernel/signal.c 2007-01-12 12:15:06.000000000 +0100
@@ -1213,6 +1213,30 @@ int group_send_sig_info(int sig, struct
return ret;
}
+/***
+ * good_sigevent - check and get target task from a sigevent.
+ * @event: the sigevent to be checked
+ *
+ * This function must be called with the tasklist_lock held for reading.
+ */
+struct task_struct * good_sigevent(sigevent_t * event)
+{
+ struct task_struct *task = current->group_leader;
+
+ if ((event->sigev_notify & SIGEV_THREAD_ID ) == SIGEV_THREAD_ID) {
+ task = find_task_by_pid(event->sigev_notify_thread_id);
+
+ if (!task || task->tgid != current->tgid)
+ return NULL;
+ } else if (event->sigev_notify == SIGEV_SIGNAL) {
+ if ((event->sigev_signo <= 0) || (event->sigev_signo > SIGRTMAX))
+ return NULL;
+ } else
+ return NULL;
+
+ return task;
+}
+
/*
* kill_pgrp_info() sends a signal to a process group: this is what the tty
* control characters do (^C, ^Z etc)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists