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Subject[PATCH 2.4.19-pre1] Signal changes for thread groups

Here's a 2.4 version of the signal changes that were accepted into the 2.5
tree for thread groups. It redirects signals to any task in a thread group
to the thread group leader. It then introduces a tkill() system call for
signals directed at a specific task.

This patch does not introduce any behavior changes outside thread groups,
and as far as I know no one is using thread groups in 2.4. It has been in
2.5 for awhile with no problems surfacing.

I'm sending it as a plain text attachment rather than try to fight with my
mailer again. I hope that's acceptable.

Dave McCracken

======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059
--- linux-2.4.19-pre1/./kernel/fork.c Mon Feb 25 13:38:13 2002
+++ linux-2.4.19-pre1-ngpt/./kernel/fork.c Thu Feb 28 13:25:25 2002
@@ -710,10 +710,10 @@
/* Need tasklist lock for parent etc handling! */
write_lock_irq(&tasklist_lock);

- /* CLONE_PARENT and CLONE_THREAD re-use the old parent */
+ /* CLONE_PARENT re-uses the old parent */
p->p_opptr = current->p_opptr;
p->p_pptr = current->p_pptr;
- if (!(clone_flags & (CLONE_PARENT | CLONE_THREAD))) {
+ if (!(clone_flags & CLONE_PARENT)) {
p->p_opptr = current;
if (!(p->ptrace & PT_PTRACED))
p->p_pptr = current;
--- linux-2.4.19-pre1/./kernel/signal.c Wed Nov 21 18:26:27 2001
+++ linux-2.4.19-pre1-ngpt/./kernel/signal.c Thu Feb 28 13:25:25 2002
@@ -142,6 +142,35 @@
}
}

+/*
+ * sig_exit - cause the current task to exit due to a signal.
+ */
+
+void
+sig_exit(int sig, int exit_code, struct siginfo *info)
+{
+ struct task_struct *t;
+
+ sigaddset(&current->pending.signal, sig);
+ recalc_sigpending(current);
+ current->flags |= PF_SIGNALED;
+
+ /* Propagate the signal to all the tasks in
+ * our thread group
+ */
+ if (info && (unsigned long)info != 1
+ && info->si_code != SI_TKILL) {
+ read_lock(&tasklist_lock);
+ for_each_thread(t) {
+ force_sig_info(sig, info, t);
+ }
+ read_unlock(&tasklist_lock);
+ }
+
+ do_exit(exit_code);
+ /* NOTREACHED */
+}
+
/* Notify the system that a driver wants to block all signals for this
* process, and wants to be notified if any signals at all were to be
* sent/acted upon. If the notifier routine returns non-zero, then the
@@ -592,7 +621,7 @@
retval = -ESRCH;
read_lock(&tasklist_lock);
for_each_task(p) {
- if (p->pgrp == pgrp) {
+ if (p->pgrp == pgrp && thread_group_leader(p)) {
int err = send_sig_info(sig, info, p);
if (retval)
retval = err;
@@ -639,8 +668,15 @@
read_lock(&tasklist_lock);
p = find_task_by_pid(pid);
error = -ESRCH;
- if (p)
+ if (p) {
+ if (!thread_group_leader(p)) {
+ struct task_struct *tg;
+ tg = find_task_by_pid(p->tgid);
+ if (tg)
+ p = tg;
+ }
error = send_sig_info(sig, info, p);
+ }
read_unlock(&tasklist_lock);
return error;
}
@@ -663,7 +699,7 @@

read_lock(&tasklist_lock);
for_each_task(p) {
- if (p->pid > 1 && p != current) {
+ if (p->pid > 1 && p != current && thread_group_leader(p)) {
int err = send_sig_info(sig, info, p);
++count;
if (err != -EPERM)
@@ -986,6 +1022,36 @@
info.si_uid = current->uid;

return kill_something_info(sig, &info, pid);
+}
+
+/*
+ * Kill only one task, even if it's a CLONE_THREAD task.
+ */
+asmlinkage long
+sys_tkill(int pid, int sig)
+{
+ struct siginfo info;
+ int error;
+ struct task_struct *p;
+
+ /* This is only valid for single tasks */
+ if (pid <= 0)
+ return -EINVAL;
+
+ info.si_signo = sig;
+ info.si_errno = 0;
+ info.si_code = SI_TKILL;
+ info.si_pid = current->pid;
+ info.si_uid = current->uid;
+
+ read_lock(&tasklist_lock);
+ p = find_task_by_pid(pid);
+ error = -ESRCH;
+ if (p) {
+ error = send_sig_info(sig, &info, p);
+ }
+ read_unlock(&tasklist_lock);
+ return error;
}

asmlinkage long
--- linux-2.4.19-pre1/./include/linux/sched.h Fri Dec 21 11:42:03 2001
+++ linux-2.4.19-pre1-ngpt/./include/linux/sched.h Thu Feb 28 13:25:25 2002
@@ -610,6 +610,7 @@
extern void proc_caches_init(void);
extern void flush_signals(struct task_struct *);
extern void flush_signal_handlers(struct task_struct *);
+extern void sig_exit(int, int, struct siginfo *);
extern int dequeue_signal(sigset_t *, siginfo_t *);
extern void block_all_signals(int (*notifier)(void *priv), void *priv,
sigset_t *mask);
@@ -870,8 +871,13 @@
#define for_each_task(p) \
for (p = &init_task ; (p = p->next_task) != &init_task ; )

+#define for_each_thread(task) \
+ for (task = next_thread(current) ; task != current ; task = next_thread(task))
+
#define next_thread(p) \
list_entry((p)->thread_group.next, struct task_struct, thread_group)
+
+#define thread_group_leader(p) (p->pid == p->tgid)

static inline void del_from_runqueue(struct task_struct * p)
{
--- linux-2.4.19-pre1/./include/asm-i386/unistd.h Mon Feb 25 13:38:12 2002
+++ linux-2.4.19-pre1-ngpt/./include/asm-i386/unistd.h Thu Feb 28 13:25:25 2002
@@ -243,6 +243,8 @@
#define __NR_lremovexattr 236
#define __NR_fremovexattr 237

+#define __NR_tkill 238
+
/* user-visible error numbers are in the range -1 - -124: see <asm-i386/errno.h> */

#define __syscall_return(type, res) \
--- linux-2.4.19-pre1/./include/asm-i386/siginfo.h Thu Nov 22 13:46:19 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-i386/siginfo.h Thu Feb 28 13:25:25 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-mips/unistd.h Mon Jul 2 15:56:40 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-mips/unistd.h Thu Feb 28 13:25:25 2002
@@ -233,6 +233,8 @@
#define __NR_madvise (__NR_Linux + 218)
#define __NR_getdents64 (__NR_Linux + 219)
#define __NR_fcntl64 (__NR_Linux + 220)
+#define __NR_gettid (__NR_Linux + 221)
+#define __NR_tkill (__NR_Linux + 222)

/*
* Offset of the last Linux flavoured syscall
--- linux-2.4.19-pre1/./include/asm-mips/siginfo.h Wed May 24 20:38:26 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-mips/siginfo.h Thu Feb 28 13:25:25 2002
@@ -127,6 +127,7 @@
#define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
#define SI_MESGQ -4 /* sent by real time mesq state change */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-alpha/unistd.h Fri Nov 9 15:45:35 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-alpha/unistd.h Thu Feb 28 13:25:25 2002
@@ -318,6 +318,7 @@
#define __NR_gettid 378
#define __NR_readahead 379
#define __NR_security 380 /* syscall for security modules */
+#define __NR_tkill 381

#if defined(__GNUC__)

--- linux-2.4.19-pre1/./include/asm-alpha/siginfo.h Wed May 24 20:38:26 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-alpha/siginfo.h Thu Feb 28 13:25:25 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-m68k/unistd.h Thu Oct 25 15:53:55 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-m68k/unistd.h Thu Feb 28 13:25:26 2002
@@ -222,6 +222,8 @@
#define __NR_setfsuid32 215
#define __NR_setfsgid32 216
#define __NR_getdents64 220
+#define __NR_gettid 221
+#define __NR_tkill 222

/* user-visible error numbers are in the range -1 - -122: see
<asm-m68k/errno.h> */
--- linux-2.4.19-pre1/./include/asm-m68k/siginfo.h Mon Nov 27 19:11:26 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-m68k/siginfo.h Thu Feb 28 13:25:26 2002
@@ -117,6 +117,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-sparc/unistd.h Sun Oct 21 12:36:54 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-sparc/unistd.h Thu Feb 28 13:25:26 2002
@@ -271,6 +271,7 @@
#define __NR_fdatasync 253
#define __NR_nfsservctl 254
#define __NR_aplib 255
+#define __NR_tkill 257

#define _syscall0(type,name) \
type name(void) \
--- linux-2.4.19-pre1/./include/asm-sparc/siginfo.h Mon Jun 19 19:59:39 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-sparc/siginfo.h Thu Feb 28 13:25:26 2002
@@ -112,6 +112,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-ppc/unistd.h Fri Nov 2 19:43:54 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-ppc/unistd.h Thu Feb 28 13:25:26 2002
@@ -215,6 +215,7 @@
#define __NR_madvise 205
#define __NR_mincore 206
#define __NR_gettid 207
+#define __NR_tkill 208

#define __NR(n) #n

--- linux-2.4.19-pre1/./include/asm-ppc/siginfo.h Mon May 21 17:02:06 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-ppc/siginfo.h Thu Feb 28 13:25:26 2002
@@ -108,6 +108,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-sparc64/unistd.h Sun Oct 21 12:36:54 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-sparc64/unistd.h Thu Feb 28 13:25:26 2002
@@ -273,6 +273,7 @@
#define __NR_fdatasync 253
#define __NR_nfsservctl 254
#define __NR_aplib 255
+#define __NR_tkill 256

#define _syscall0(type,name) \
type name(void) \
--- linux-2.4.19-pre1/./include/asm-sparc64/siginfo.h Wed May 24 20:38:26 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-sparc64/siginfo.h Thu Feb 28 13:25:26 2002
@@ -172,6 +172,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-arm/siginfo.h Sun Aug 12 13:14:00 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-arm/siginfo.h Thu Feb 28 13:25:26 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-sh/siginfo.h Thu Jan 4 15:19:13 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-sh/siginfo.h Thu Feb 28 13:25:26 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-sh/unistd.h Mon Oct 2 13:57:34 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-sh/unistd.h Thu Feb 28 13:25:26 2002
@@ -231,6 +231,8 @@
#define __NR_madvise 219
#define __NR_getdents64 220
#define __NR_fcntl64 221
+#define __NR_gettid 222
+#define __NR_tkill 223

/* user-visible error numbers are in the range -1 - -125: see <asm-sh/errno.h> */

--- linux-2.4.19-pre1/./include/asm-ia64/siginfo.h Fri Dec 21 11:42:03 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-ia64/siginfo.h Thu Feb 28 13:25:26 2002
@@ -124,6 +124,7 @@
#define SI_MESGQ (-3) /* sent by real time mesq state change */
#define SI_ASYNCIO (-4) /* sent by AIO completion */
#define SI_SIGIO (-5) /* sent by queued SIGIO */
+#define SI_TKILL (-6) /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-ia64/unistd.h Fri Nov 9 16:26:17 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-ia64/unistd.h Thu Feb 28 13:25:26 2002
@@ -206,6 +206,7 @@
#define __NR_getdents64 1214
#define __NR_getunwind 1215
#define __NR_readahead 1216
+#define __NR_tkill 1229

#if !defined(__ASSEMBLY__) && !defined(ASSEMBLER)

--- linux-2.4.19-pre1/./include/asm-mips64/siginfo.h Wed Jul 4 13:50:39 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-mips64/siginfo.h Thu Feb 28 13:25:26 2002
@@ -127,6 +127,7 @@
#define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
#define SI_MESGQ -4 /* sent by real time mesq state change */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-mips64/unistd.h Tue Nov 28 23:42:04 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-mips64/unistd.h Thu Feb 28 13:25:26 2002
@@ -461,11 +461,13 @@
#define __NR_mincore (__NR_Linux + 211)
#define __NR_madvise (__NR_Linux + 212)
#define __NR_getdents64 (__NR_Linux + 213)
+#define __NR_gettid (__NR_Linux + 214)
+#define __NR_tkill (__NR_Linux + 215)

/*
* Offset of the last Linux flavoured syscall
*/
-#define __NR_Linux_syscalls 213
+#define __NR_Linux_syscalls 215

#ifndef _LANGUAGE_ASSEMBLY

--- linux-2.4.19-pre1/./include/asm-s390/siginfo.h Mon Feb 25 13:38:13 2002
+++ linux-2.4.19-pre1-ngpt/./include/asm-s390/siginfo.h Thu Feb 28 13:25:26 2002
@@ -115,6 +115,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-s390/unistd.h Thu Oct 11 11:43:38 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-s390/unistd.h Thu Feb 28 13:25:26 2002
@@ -211,6 +211,8 @@
#define __NR_mincore 218
#define __NR_madvise 219
#define __NR_getdents64 220
+#define __NR_gettid 226
+#define __NR_tkill 227


/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */
--- linux-2.4.19-pre1/./include/asm-parisc/siginfo.h Tue Dec 5 14:29:39 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-parisc/siginfo.h Thu Feb 28 13:25:26 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-parisc/unistd.h Tue Dec 5 14:29:39 2000
+++ linux-2.4.19-pre1-ngpt/./include/asm-parisc/unistd.h Thu Feb 28 13:25:26 2002
@@ -689,8 +689,10 @@

#define __NR_getpmsg (__NR_Linux + 196) /* some people actually want streams */
#define __NR_putpmsg (__NR_Linux + 197) /* some people actually want streams */
+#define __NR_gettid (__NR_Linux + 198)
+#define __NR_tkill (__NR_Linux + 199)

-#define __NR_Linux_syscalls 197
+#define __NR_Linux_syscalls 199

#define HPUX_GATEWAY_ADDR 0xC0000004
#define LINUX_GATEWAY_ADDR 0x100
--- linux-2.4.19-pre1/./include/asm-cris/siginfo.h Thu Feb 8 18:32:44 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-cris/siginfo.h Thu Feb 28 13:25:26 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-cris/unistd.h Mon Feb 25 13:38:12 2002
+++ linux-2.4.19-pre1-ngpt/./include/asm-cris/unistd.h Thu Feb 28 13:25:26 2002
@@ -230,6 +230,7 @@
#define __NR_security 223 /* syscall for security modules */
#define __NR_gettid 224
#define __NR_readahead 225
+#define __NR_tkill 226

/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
#define _syscall0(type,name) \
--- linux-2.4.19-pre1/./include/asm-s390x/siginfo.h Mon Feb 25 13:38:13 2002
+++ linux-2.4.19-pre1-ngpt/./include/asm-s390x/siginfo.h Thu Feb 28 13:25:26 2002
@@ -115,6 +115,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.4.19-pre1/./include/asm-s390x/unistd.h Thu Oct 11 11:43:38 2001
+++ linux-2.4.19-pre1-ngpt/./include/asm-s390x/unistd.h Thu Feb 28 13:25:26 2002
@@ -181,6 +181,8 @@
#define __NR_mincore 218
#define __NR_madvise 219
#define __NR_getdents64 220
+#define __NR_gettid 226
+#define __NR_tkill 227


/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */
--- linux-2.4.19-pre1/./arch/i386/kernel/entry.S Mon Feb 25 13:37:53 2002
+++ linux-2.4.19-pre1-ngpt/./arch/i386/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -634,6 +634,7 @@
.long SYMBOL_NAME(sys_ni_syscall) /* 235 reserved for removexattr */
.long SYMBOL_NAME(sys_ni_syscall) /* reserved for lremovexattr */
.long SYMBOL_NAME(sys_ni_syscall) /* reserved for fremovexattr */
+ .long SYMBOL_NAME(sys_tkill)

.rept NR_syscalls-(.-sys_call_table)/4
.long SYMBOL_NAME(sys_ni_syscall)
--- linux-2.4.19-pre1/./arch/i386/kernel/signal.c Mon Feb 25 13:37:53 2002
+++ linux-2.4.19-pre1-ngpt/./arch/i386/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -685,10 +685,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/alpha/kernel/entry.S Fri Nov 9 15:45:35 2001
+++ linux-2.4.19-pre1-ngpt/./arch/alpha/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -1148,3 +1148,4 @@
.quad sys_gettid
.quad sys_readahead
.quad sys_ni_syscall /* 380, sys_security */
+ .quad sys_tkill
--- linux-2.4.19-pre1/./arch/alpha/kernel/signal.c Fri Nov 9 15:45:35 2001
+++ linux-2.4.19-pre1-ngpt/./arch/alpha/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -717,9 +717,7 @@

default:
lock_kernel();
- sigaddset(&current->pending.signal, signr);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
continue;
--- linux-2.4.19-pre1/./arch/sparc/kernel/signal.c Wed Jan 24 17:18:06 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sparc/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -1279,10 +1279,7 @@
#endif
/* fall through */
default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOT REACHED */
}
}
--- linux-2.4.19-pre1/./arch/sparc/kernel/systbls.S Sun Oct 21 12:36:54 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sparc/kernel/systbls.S Thu Feb 28 13:25:26 2002
@@ -70,7 +70,7 @@
/*240*/ .long sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
/*245*/ .long sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
/*250*/ .long sparc_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
-/*255*/ .long sys_nis_syscall, sys_nis_syscall
+/*255*/ .long sys_nis_syscall, sys_nis_syscall, sys_tkill

#ifdef CONFIG_SUNOS_EMUL
/* Now the SunOS syscall table. */
--- linux-2.4.19-pre1/./arch/mips/kernel/signal.c Sun Sep 9 12:43:01 2001
+++ linux-2.4.19-pre1-ngpt/./arch/mips/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -661,10 +661,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/mips/kernel/syscalls.h Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/mips/kernel/syscalls.h Thu Feb 28 13:25:26 2002
@@ -235,3 +235,5 @@
SYS(sys_madvise, 3)
SYS(sys_getdents64, 3)
SYS(sys_fcntl64, 3) /* 4220 */
+SYS(sys_gettid, 0)
+SYS(sys_tkill, 2)
--- linux-2.4.19-pre1/./arch/ppc/kernel/misc.S Mon Feb 25 13:37:55 2002
+++ linux-2.4.19-pre1-ngpt/./arch/ppc/kernel/misc.S Thu Feb 28 13:25:26 2002
@@ -1122,6 +1122,7 @@
.long sys_madvise /* 205 */
.long sys_mincore
.long sys_gettid
+ .long sys_tkill
.rept NR_syscalls-(.-sys_call_table)/4
.long sys_ni_syscall
.endr
--- linux-2.4.19-pre1/./arch/ppc/kernel/signal.c Mon Nov 26 07:29:17 2001
+++ linux-2.4.19-pre1-ngpt/./arch/ppc/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -645,10 +645,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/m68k/kernel/entry.S Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/m68k/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -646,6 +646,8 @@
.long SYMBOL_NAME(sys_ni_syscall)
.long SYMBOL_NAME(sys_ni_syscall)
.long SYMBOL_NAME(sys_getdents64) /* 220 */
+ .long SYMBOL_NAME(sys_gettid)
+ .long SYMBOL_NAME(sys_tkill)

.rept NR_syscalls-(.-SYMBOL_NAME(sys_call_table))/4
.long SYMBOL_NAME(sys_ni_syscall)
--- linux-2.4.19-pre1/./arch/m68k/kernel/signal.c Wed Jan 24 17:21:28 2001
+++ linux-2.4.19-pre1-ngpt/./arch/m68k/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -1135,10 +1135,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/sparc64/kernel/signal32.c Fri Apr 27 00:17:25 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sparc64/kernel/signal32.c Thu Feb 28 13:25:26 2002
@@ -1478,10 +1478,7 @@
#endif
/* fall through */
default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOT REACHED */
}
}
--- linux-2.4.19-pre1/./arch/sparc64/kernel/systbls.S Sun Oct 21 12:36:54 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sparc64/kernel/systbls.S Thu Feb 28 13:25:26 2002
@@ -70,7 +70,7 @@
/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
.word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys32_sched_rr_get_interval, sys32_nanosleep
/*250*/ .word sys32_mremap, sys32_sysctl, sys_getsid, sys_fdatasync, sys32_nfsservctl
- .word sys_aplib
+ .word sys_aplib, sys_tkill

/* Now the 64-bit native Linux syscall table. */

@@ -129,7 +129,7 @@
/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
.word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
/*250*/ .word sys64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
- .word sys_aplib
+ .word sys_aplib, sys_tkill

#if defined(CONFIG_SUNOS_EMUL) || defined(CONFIG_SOLARIS_EMUL) || \
defined(CONFIG_SOLARIS_EMUL_MODULE)
--- linux-2.4.19-pre1/./arch/sparc64/kernel/signal.c Sun Mar 25 20:14:21 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sparc64/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -806,10 +806,7 @@
#endif
/* fall through */
default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOT REACHED */
}
}
--- linux-2.4.19-pre1/./arch/arm/kernel/calls.S Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/arm/kernel/calls.S Thu Feb 28 13:25:26 2002
@@ -236,6 +236,8 @@
.long SYMBOL_NAME(sys_mincore)
/* 220 */ .long SYMBOL_NAME(sys_madvise)
.long SYMBOL_NAME(sys_fcntl64)
+ .long SYMBOL_NAME(sys_gettid)
+ .long SYMBOL_NAME(sys_tkill)
__syscall_end:

.rept NR_syscalls - (__syscall_end - __syscall_start) / 4
--- linux-2.4.19-pre1/./arch/arm/kernel/signal.c Thu Oct 11 11:04:57 2001
+++ linux-2.4.19-pre1-ngpt/./arch/arm/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -637,10 +637,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/sh/kernel/entry.S Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sh/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -1298,6 +1298,8 @@
.long SYMBOL_NAME(sys_madvise)
.long SYMBOL_NAME(sys_getdents64) /* 220 */
.long SYMBOL_NAME(sys_fcntl64)
+ .long SYMBOL_NAME(sys_gettid)
+ .long SYMBOL_NAME(sys_tkill)

/*
* NOTE!! This doesn't have to be exact - we just have
--- linux-2.4.19-pre1/./arch/sh/kernel/signal.c Mon Oct 15 15:36:48 2001
+++ linux-2.4.19-pre1-ngpt/./arch/sh/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -671,10 +671,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/ia64/kernel/entry.S Fri Nov 9 16:26:17 2001
+++ linux-2.4.19-pre1-ngpt/./arch/ia64/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -1142,7 +1142,7 @@
data8 ia64_ni_syscall
data8 ia64_ni_syscall
data8 ia64_ni_syscall
- data8 ia64_ni_syscall
+ data8 sys_tkill
data8 ia64_ni_syscall // 1230
data8 ia64_ni_syscall
data8 ia64_ni_syscall
--- linux-2.4.19-pre1/./arch/ia64/kernel/signal.c Fri Nov 9 16:26:17 2001
+++ linux-2.4.19-pre1-ngpt/./arch/ia64/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -578,10 +578,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/mips64/kernel/scall_64.S Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/mips64/kernel/scall_64.S Thu Feb 28 13:25:26 2002
@@ -347,3 +347,5 @@
PTR sys_mincore
PTR sys_madvise
PTR sys_getdents64
+ PTR sys_gettid
+ PTR sys_tkill
--- linux-2.4.19-pre1/./arch/mips64/kernel/scall_o32.S Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/mips64/kernel/scall_o32.S Thu Feb 28 13:25:26 2002
@@ -454,6 +454,8 @@
sys sys_madvise 3
sys sys_getdents64 3
sys sys32_fcntl64 3 /* 4220 */
+ sys sys32_gettid 0
+ sys sys32_tkill 2
.endm

.macro sys function, nargs
--- linux-2.4.19-pre1/./arch/mips64/kernel/signal.c Sun Sep 9 12:43:01 2001
+++ linux-2.4.19-pre1-ngpt/./arch/mips64/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -685,10 +685,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/mips64/kernel/signal32.c Sun Sep 9 12:43:01 2001
+++ linux-2.4.19-pre1-ngpt/./arch/mips64/kernel/signal32.c Thu Feb 28 13:25:26 2002
@@ -757,10 +757,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/s390/kernel/entry.S Mon Feb 25 13:37:56 2002
+++ linux-2.4.19-pre1-ngpt/./arch/s390/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -602,6 +602,8 @@
.long sys_ni_syscall /* 224 - reserved for posix_acl */
.rept 255-224
.long sys_ni_syscall
+ .long sys_gettid /* 226 */
+ .long sys_tkill /* 227 */
.endr

/*
--- linux-2.4.19-pre1/./arch/s390/kernel/signal.c Thu Oct 11 11:04:57 2001
+++ linux-2.4.19-pre1-ngpt/./arch/s390/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -563,10 +563,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/parisc/kernel/signal.c Wed Dec 6 13:46:39 2000
+++ linux-2.4.19-pre1-ngpt/./arch/parisc/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -581,11 +581,7 @@
/* FALLTHRU */

default:
- lock_kernel();
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/parisc/kernel/syscall.S Mon Oct 8 12:39:18 2001
+++ linux-2.4.19-pre1-ngpt/./arch/parisc/kernel/syscall.S Thu Feb 28 13:25:26 2002
@@ -552,6 +552,8 @@
ENTRY_UHOH(shmctl) /* 195 */
ENTRY_SAME(ni_syscall) /* streams1 */
ENTRY_SAME(ni_syscall) /* streams2 */
+ ENTRY_SAME(gettid)
+ ENTRY_SAME(tkill)

.end

--- linux-2.4.19-pre1/./arch/cris/kernel/entry.S Mon Feb 25 13:37:52 2002
+++ linux-2.4.19-pre1-ngpt/./arch/cris/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -1013,6 +1013,7 @@
.long SYMBOL_NAME(sys_ni_syscall) /* Reserved for Security */
.long SYMBOL_NAME(sys_gettid)
.long SYMBOL_NAME(sys_readahead) /* 225 */
+ .long SYMBOL_NAME(sys_tkill)

/*
* NOTE!! This doesn't have to be exact - we just have
--- linux-2.4.19-pre1/./arch/cris/kernel/signal.c Mon Oct 8 13:43:54 2001
+++ linux-2.4.19-pre1-ngpt/./arch/cris/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -679,10 +679,7 @@

default:
lock_kernel();
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/s390x/kernel/entry.S Mon Feb 25 13:37:56 2002
+++ linux-2.4.19-pre1-ngpt/./arch/s390x/kernel/entry.S Thu Feb 28 13:25:26 2002
@@ -635,6 +635,8 @@
.long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 224 - reserved for posix_acl */
.rept 255-224
.long SYSCALL(sys_ni_syscall,sys_ni_syscall)
+ .long SYSCALL(sys_gettid,sys_gettid)
+ .long SYSCALL(sys_tkill,sys_tkill)
.endr

/*
--- linux-2.4.19-pre1/./arch/s390x/kernel/signal.c Thu Oct 11 11:04:57 2001
+++ linux-2.4.19-pre1-ngpt/./arch/s390x/kernel/signal.c Thu Feb 28 13:25:26 2002
@@ -569,10 +569,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
--- linux-2.4.19-pre1/./arch/s390x/kernel/signal32.c Thu Oct 11 11:04:57 2001
+++ linux-2.4.19-pre1-ngpt/./arch/s390x/kernel/signal32.c Thu Feb 28 13:25:26 2002
@@ -699,10 +699,7 @@
/* FALLTHRU */

default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
/* NOTREACHED */
}
}
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