-/* Queue a signal (with value) for a specific pthread. Stub version.
- Copyright (C) 2014-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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
#include <errno.h>
#include <signal.h>
+#include <string.h>
+#include <unistd.h>
#include <pthreadP.h>
+#include <tls.h>
+#include <sysdep.h>
int
pthread_sigqueue (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. */
/* 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;
+
+ pid_t pid = getpid ();
+
+ /* 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 = pid;
+ info.si_uid = getuid ();
+ info.si_value = value;
+
+ /* We have a special syscall to do the work. */
+ int val = INTERNAL_SYSCALL_CALL (rt_tgsigqueueinfo, pid, tid, signo,
+ &info);
+ return (INTERNAL_SYSCALL_ERROR_P (val)
+ ? INTERNAL_SYSCALL_ERRNO (val) : 0);
+#else
return ENOSYS;
+#endif
}
-
-stub_warning (pthread_sigqueue)
+++ /dev/null
-/* Copyright (C) 2009-2021 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
- <https://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 (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;
-
- pid_t pid = getpid ();
-
- /* 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 = pid;
- info.si_uid = getuid ();
- info.si_value = value;
-
- /* We have a special syscall to do the work. */
- int val = INTERNAL_SYSCALL_CALL (rt_tgsigqueueinfo, pid, tid, signo,
- &info);
- return (INTERNAL_SYSCALL_ERROR_P (val)
- ? INTERNAL_SYSCALL_ERRNO (val) : 0);
-#else
- return ENOSYS;
-#endif
-}