The patch titled signals: implement sys_rt_tgsigqueueinfo has been added to the -mm tree. Its filename is signals-implement-sys_rt_tgsigqueueinfo.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: signals: implement sys_rt_tgsigqueueinfo From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> sys_kill has the per thread counterpart sys_tgkill. sigqueueinfo is missing a thread directed counterpart. Such an interface is important for migrating applications from other OSes which have the per thread delivery implemented. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Roland McGrath <roland@xxxxxxxxxx> Cc: Ulrich Drepper <drepper@xxxxxxxxxx> Cc: <linux-abi@xxxxxxxxxxxxxxx> Cc: <linux-arch@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/compat.h | 2 ++ include/linux/signal.h | 2 ++ kernel/compat.c | 11 +++++++++++ kernel/signal.c | 26 ++++++++++++++++++++++++++ 4 files changed, 41 insertions(+) diff -puN include/linux/compat.h~signals-implement-sys_rt_tgsigqueueinfo include/linux/compat.h --- a/include/linux/compat.h~signals-implement-sys_rt_tgsigqueueinfo +++ a/include/linux/compat.h @@ -216,6 +216,8 @@ int copy_siginfo_from_user32(siginfo_t * int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from); int get_compat_sigevent(struct sigevent *event, const struct compat_sigevent __user *u_event); +long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, + struct compat_siginfo __user *uinfo); static inline int compat_timeval_compare(struct compat_timeval *lhs, struct compat_timeval *rhs) diff -puN include/linux/signal.h~signals-implement-sys_rt_tgsigqueueinfo include/linux/signal.h --- a/include/linux/signal.h~signals-implement-sys_rt_tgsigqueueinfo +++ a/include/linux/signal.h @@ -235,6 +235,8 @@ static inline int valid_signal(unsigned extern int next_signal(struct sigpending *pending, sigset_t *mask); extern int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p); extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *); +extern long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, + siginfo_t *info); extern long do_sigpending(void __user *, unsigned long); extern int sigprocmask(int, sigset_t *, sigset_t *); extern int show_unhandled_signals; diff -puN kernel/compat.c~signals-implement-sys_rt_tgsigqueueinfo kernel/compat.c --- a/kernel/compat.c~signals-implement-sys_rt_tgsigqueueinfo +++ a/kernel/compat.c @@ -882,6 +882,17 @@ compat_sys_rt_sigtimedwait (compat_sigse } +asmlinkage long +compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, + struct compat_siginfo __user *uinfo) +{ + siginfo_t info; + + if (copy_siginfo_from_user32(&info, uinfo)) + return -EFAULT; + return do_rt_tgsigqueueinfo(tgid, pid, sig, &info); +} + #ifdef __ARCH_WANT_COMPAT_SYS_TIME /* compat_time_t is a 32 bit "long" and needs to get converted. */ diff -puN kernel/signal.c~signals-implement-sys_rt_tgsigqueueinfo kernel/signal.c --- a/kernel/signal.c~signals-implement-sys_rt_tgsigqueueinfo +++ a/kernel/signal.c @@ -2369,6 +2369,32 @@ SYSCALL_DEFINE3(rt_sigqueueinfo, pid_t, return kill_proc_info(sig, &info, pid); } +long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info) +{ + /* This is only valid for single tasks */ + if (pid <= 0 || tgid <= 0) + return -EINVAL; + + /* Not even root can pretend to send signals from the kernel. + Nor can they impersonate a kill(), which adds source info. */ + if (info->si_code >= 0) + return -EPERM; + info->si_signo = sig; + + return do_send_specific(tgid, pid, sig, info); +} + +SYSCALL_DEFINE4(rt_tgsigqueueinfo, pid_t, tgid, pid_t, pid, int, sig, + siginfo_t __user *, uinfo) +{ + siginfo_t info; + + if (copy_from_user(&info, uinfo, sizeof(siginfo_t))) + return -EFAULT; + + return do_rt_tgsigqueueinfo(tgid, pid, sig, &info); +} + int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) { struct task_struct *t = current; _ Patches currently in -mm which might be from tglx@xxxxxxxxxxxxx are origin.patch introduce-debug_kmap_atomic.patch use-debug_kmap_atomic.patch linux-next.patch thinkpad-acpi-split-delayed-leds-stuff-clean-up-code.patch x86-simplify-highmem-related-kconfig-entries.patch clocksource-pass-clocksource-to-read-callback.patch clocksource-add-enable-and-disable-callbacks.patch clocksource-sanity-check-sysfs-clocksource-changes.patch kernel-time-tick-broadcastc-tick_broadcast_device-can-become-static.patch scsi-mpt-suppress-debugobjects-warning.patch signals-remove-handler-parameter-to-tracehook-functions.patch signals-split-do_tkill.patch signals-implement-sys_rt_tgsigqueueinfo.patch x86-hookup-sys_rt_tgsigqueueinfo.patch sgi-gru-exclude-uv-definitions-on-32-bit-x86.patch sgi-gru-add-definitions-of-x86_64-gru-mmrs.patch sgi-gru-add-macros-for-using-the-uv-hub-to-send-interrupts.patch preadv-pwritev-add-preadv-and-pwritev-system-calls.patch -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html