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79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/* Set a thread's signal state. Hurd on Mach version.
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Copyright (C) 2002-2020 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 <pthread.h>
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#include <assert.h>
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#include <signal.h>
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#include <hurd/signal.h>
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#include <hurd/msg.h>
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#include <pt-internal.h>
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error_t
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__pthread_sigstate (struct __pthread *thread, int how,
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const sigset_t *set, sigset_t *oset, int clear_pending)
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{
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error_t err = 0;
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struct hurd_sigstate *ss;
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sigset_t pending;
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ss = _hurd_thread_sigstate (thread->kernel_thread);
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assert (ss);
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_hurd_sigstate_lock (ss);
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if (oset != NULL)
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*oset = ss->blocked;
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if (set != NULL)
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{
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switch (how)
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{
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case SIG_BLOCK:
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ss->blocked |= *set;
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break;
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case SIG_SETMASK:
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ss->blocked = *set;
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break;
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case SIG_UNBLOCK:
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ss->blocked &= ~*set;
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break;
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default:
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err = EINVAL;
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break;
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}
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ss->blocked &= ~_SIG_CANT_MASK;
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}
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if (!err && clear_pending)
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__sigemptyset (&ss->pending);
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pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
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_hurd_sigstate_unlock (ss);
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if (!err && pending)
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/* Send a message to the signal thread so it
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will wake up and check for pending signals. */
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__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
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return err;
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}
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