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81c4ec1ca8
If no thread was created yet, __pthread_sigstate will not find our ss because self->kernel_thread is still nul, and then change the global sigstate instead of our sigstate! We can directly call __sigthreadmask and skip the (bogus) lookup step.
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/* Copyright (C) 1991-2025 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 <signal.h>
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#include <hurd.h>
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#include <hurd/signal.h>
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#include <hurd/msg.h>
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/* If SET is not NULL, modify the current set of blocked signals in SS
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according to HOW, which may be SIG_BLOCK, SIG_UNBLOCK or SIG_SETMASK.
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If OSET is not NULL, store the old set of blocked signals in *OSET.
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If CLEAR_PENDING is non-zero, the pending set is cleared. */
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error_t
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__sigthreadmask (struct hurd_sigstate *ss, int how,
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const sigset_t *set, sigset_t *oset, int clear_pending)
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{
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sigset_t old, new;
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sigset_t pending;
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if (set != NULL)
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new = *set;
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assert (ss);
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/* We are not supposed to change the global blocked state */
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assert (ss != _hurd_global_sigstate);
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_hurd_sigstate_lock (ss);
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old = 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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__sigorset (&ss->blocked, &ss->blocked, &new);
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break;
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case SIG_UNBLOCK:
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ss->blocked &= ~new;
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break;
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case SIG_SETMASK:
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ss->blocked = new;
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break;
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default:
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_hurd_sigstate_unlock (ss);
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return EINVAL;
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}
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ss->blocked &= ~_SIG_CANT_MASK;
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}
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if (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 (oset != NULL)
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*oset = old;
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if (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 0;
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}
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