Messages in this thread Patch in this message | | | Date | Mon, 20 Nov 2006 15:22:44 +0100 | From | Sébastien Dugué <> | Subject | Re: [PATCH -mm 2/4][AIO] - export good_sigevent() |
| |
Export good_sigevent()
Move good_sigevent() from posix-timers.c to signal.c where it belongs, and export it so that it can be used by other subsystems.
include/linux/signal.h | 2 ++ kernel/posix-timers.c | 17 ----------------- kernel/signal.c | 23 +++++++++++++++++++++++ 3 files changed, 25 insertions(+), 17 deletions(-)
Signed-off-by: Sébastien Dugué <sebastien.dugue@bull.net>
Index: linux-2.6.19-rc5-mm2/include/linux/signal.h =================================================================== --- linux-2.6.19-rc5-mm2.orig/include/linux/signal.h 2006-11-17 11:20:08.000000000 +0100 +++ linux-2.6.19-rc5-mm2/include/linux/signal.h 2006-11-17 11:20:31.000000000 +0100 @@ -241,6 +241,8 @@ 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 *); + #endif /* __KERNEL__ */ #endif /* _LINUX_SIGNAL_H */ Index: linux-2.6.19-rc5-mm2/kernel/posix-timers.c =================================================================== --- linux-2.6.19-rc5-mm2.orig/kernel/posix-timers.c 2006-11-17 11:20:08.000000000 +0100 +++ linux-2.6.19-rc5-mm2/kernel/posix-timers.c 2006-11-17 11:20:31.000000000 +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-2.6.19-rc5-mm2/kernel/signal.c =================================================================== --- linux-2.6.19-rc5-mm2.orig/kernel/signal.c 2006-11-17 11:20:08.000000000 +0100 +++ linux-2.6.19-rc5-mm2/kernel/signal.c 2006-11-17 11:20:31.000000000 +0100 @@ -1189,6 +1189,29 @@ 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 tasklist_lock held for reading. + */ +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; +} + /* * 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |