diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c b/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c deleted file mode 100644 index 1e66815416..0000000000 --- a/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c +++ /dev/null @@ -1,81 +0,0 @@ -/* Copyright (C) 2009-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@redhat.com>, 2009. - - 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, see - <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <signal.h> -#include <string.h> -#include <unistd.h> -#include <pthreadP.h> -#include <tls.h> -#include <sysdep.h> - - -int -pthread_sigqueue (threadid, signo, value) - pthread_t threadid; - int signo; - const union sigval value; -{ -#ifdef __NR_rt_tgsigqueueinfo - struct pthread *pd = (struct pthread *) threadid; - - /* Make sure the descriptor is valid. */ - if (DEBUGGING_P && INVALID_TD_P (pd)) - /* Not a valid thread handle. */ - return ESRCH; - - /* Force load of pd->tid into local variable or register. Otherwise - if a thread exits between ESRCH test and tgkill, we might return - EINVAL, because pd->tid would be cleared by the kernel. */ - pid_t tid = atomic_forced_read (pd->tid); - if (__glibc_unlikely (tid <= 0)) - /* Not a valid thread handle. */ - return ESRCH; - - /* Disallow sending the signal we use for cancellation, timers, - for the setxid implementation. */ - if (signo == SIGCANCEL || signo == SIGTIMER || signo == SIGSETXID) - return EINVAL; - - /* Set up the siginfo_t structure. */ - siginfo_t info; - memset (&info, '\0', sizeof (siginfo_t)); - info.si_signo = signo; - info.si_code = SI_QUEUE; - info.si_pid = THREAD_GETMEM (THREAD_SELF, pid); - info.si_uid = getuid (); - info.si_value = value; - - /* 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_sigqueue is not guaranteed to be async-safe. */ - int val = INTERNAL_SYSCALL (rt_tgsigqueueinfo, err, 4, - THREAD_GETMEM (THREAD_SELF, pid), - tid, signo, &info); - - return (INTERNAL_SYSCALL_ERROR_P (val, err) - ? INTERNAL_SYSCALL_ERRNO (val, err) : 0); -#else - return ENOSYS; -#endif -} |