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17d91f0857
Also return EINVAL if the thread is already terminated at the time of the call. Checked on x86_64-linux-gnu.
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/* Copyright (C) 2009-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <libc-lock.h>
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#include <signal.h>
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#include <string.h>
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#include <unistd.h>
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#include <pthreadP.h>
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#include <tls.h>
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#include <sysdep.h>
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#include <shlib-compat.h>
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int
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__pthread_sigqueue (pthread_t threadid, int signo, const union sigval value)
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{
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/* Disallow sending the signal we use for cancellation, timers,
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for the setxid implementation. */
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if (signo == SIGCANCEL || signo == SIGTIMER || signo == SIGSETXID)
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return EINVAL;
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struct pthread *pd = (struct pthread *) threadid;
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/* Block all signals, as required by pd->exit_lock. */
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internal_sigset_t old_mask;
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internal_signal_block_all (&old_mask);
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__libc_lock_lock (pd->exit_lock);
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int res;
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if (pd->tid != 0)
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{
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pid_t pid = getpid ();
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siginfo_t info = { 0 };
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info.si_signo = signo;
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info.si_code = SI_QUEUE;
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info.si_pid = pid;
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info.si_uid = __getuid ();
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info.si_value = value;
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res = -INTERNAL_SYSCALL_CALL (rt_tgsigqueueinfo, pid, pd->tid, signo,
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&info);
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}
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else
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res = EINVAL;
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__libc_lock_unlock (pd->exit_lock);
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internal_signal_restore_set (&old_mask);
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return res;
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}
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versioned_symbol (libc, __pthread_sigqueue, pthread_sigqueue, GLIBC_2_34);
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#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_11, GLIBC_2_34)
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compat_symbol (libpthread, __pthread_sigqueue, pthread_sigqueue, GLIBC_2_11);
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#endif
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