mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 21:40:12 +00:00
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <pthreadP.h>
|
|
#include <tls.h>
|
|
#include <sysdep.h>
|
|
#include <kernel-features.h>
|
|
|
|
|
|
int
|
|
__pthread_kill (threadid, signo)
|
|
pthread_t threadid;
|
|
int signo;
|
|
{
|
|
struct pthread *pd = (struct pthread *) threadid;
|
|
|
|
/* Make sure the descriptor is valid. */
|
|
if (INVALID_TD_P (pd))
|
|
/* Not a valid thread handle. */
|
|
return ESRCH;
|
|
|
|
/* Disallow sending the signal we use for cancellation, timers, for
|
|
for the setxid implementation. */
|
|
if (signo == SIGCANCEL || signo == SIGTIMER || signo == SIGSETXID)
|
|
return EINVAL;
|
|
|
|
/* We have a special syscall to do the work. */
|
|
INTERNAL_SYSCALL_DECL (err);
|
|
|
|
/* One comment: The PID field in the TCB can temporarily be changed
|
|
(in fork). But this must not affect this code here. Since this
|
|
function would have to be called while the thread is executing
|
|
fork, it would have to happen in a signal handler. But this is
|
|
no allowed, pthread_kill is not guaranteed to be async-safe. */
|
|
int val;
|
|
#if __ASSUME_TGKILL
|
|
val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
|
|
pd->tid, signo);
|
|
#else
|
|
# ifdef __NR_tgkill
|
|
val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
|
|
pd->tid, signo);
|
|
if (INTERNAL_SYSCALL_ERROR_P (val, err)
|
|
&& INTERNAL_SYSCALL_ERRNO (val, err) == ENOSYS)
|
|
# endif
|
|
val = INTERNAL_SYSCALL (tkill, err, 2, pd->tid, signo);
|
|
#endif
|
|
|
|
return (INTERNAL_SYSCALL_ERROR_P (val, err)
|
|
? INTERNAL_SYSCALL_ERRNO (val, err) : 0);
|
|
}
|
|
strong_alias (__pthread_kill, pthread_kill)
|