vasilito
068a1ca63e
Bootloader fork rebase:
- Base changed from 0.1.0 pre-patched archive to upstream 1.0.0 tag (c7eeb9f)
- Applied 0001-redbear-local-forks.patch (Cargo.toml crate path redirects)
- Applied fix-uefi-alloc-panic.patch equivalents (4 panic!() -> graceful
error handling in src/main.rs)
- Applied P5-live-preload-cap-1gib.patch (1 GiB cap on live image preload)
- Skipped: P0 GPT partition scan (requires new module + integration),
P1 timeout/default-resolution, P2 live preload guard (subsumed by
panic fixes + cap), P3 live image safe read, P4 large ISO boot,
redox.patch — to be applied in dedicated rebase session.
firmware-loader/Cargo.toml: version 0.1.0 -> 0.3.0 (sync with other
Red Bear custom crates which are at 0.3.0).
fork-upstream-map.toml: bootloader back from PENDING_REBASE to 1.0.0
since the partial rebase matches upstream 1.0.0 content.
fork-upstream-map.toml: base restored to 'main' tracked (was correctly
tracked by build-redbear.sh).
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/* POSIX compatible signal blocking for threads.
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Copyright (C) 2011-2025 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <signal.h>
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#include <errno.h>
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#include <stddef.h>
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#if PTHREAD_SIGMASK_INEFFECTIVE
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# include <string.h>
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#endif
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#if PTHREAD_SIGMASK_UNBLOCK_BUG
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# include <unistd.h>
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#endif
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int
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pthread_sigmask (int how, const sigset_t *new_mask, sigset_t *old_mask)
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#undef pthread_sigmask
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{
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#if HAVE_PTHREAD_SIGMASK
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int ret;
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# if PTHREAD_SIGMASK_INEFFECTIVE
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sigset_t omask, omask_copy;
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sigset_t *old_mask_ptr = &omask;
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sigemptyset (&omask);
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/* Add a signal unlikely to be blocked, so that OMASK_COPY
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is unlikely to match the actual mask. */
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sigaddset (&omask, SIGILL);
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memcpy (&omask_copy, &omask, sizeof omask);
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# else
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sigset_t *old_mask_ptr = old_mask;
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# endif
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ret = pthread_sigmask (how, new_mask, old_mask_ptr);
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# if PTHREAD_SIGMASK_INEFFECTIVE
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if (ret == 0)
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{
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/* Detect whether pthread_sigmask is currently ineffective.
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Don't cache the information: libpthread.so could be dynamically
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loaded after the program started and after pthread_sigmask was
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called for the first time. */
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if (memcmp (&omask_copy, &omask, sizeof omask) == 0
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&& pthread_sigmask (1729, &omask_copy, NULL) == 0)
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{
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/* pthread_sigmask is currently ineffective. The program is not
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linked to -lpthread. So use sigprocmask instead. */
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return (sigprocmask (how, new_mask, old_mask) < 0 ? errno : 0);
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}
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if (old_mask)
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memcpy (old_mask, &omask, sizeof omask);
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}
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# endif
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# if PTHREAD_SIGMASK_FAILS_WITH_ERRNO
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if (ret == -1)
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return errno;
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# endif
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# if PTHREAD_SIGMASK_UNBLOCK_BUG
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if (ret == 0
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&& new_mask != NULL
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&& (how == SIG_UNBLOCK || how == SIG_SETMASK))
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{
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/* Give the OS the opportunity to raise signals that were pending before
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the pthread_sigmask call and have now been unblocked. */
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usleep (1);
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}
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# endif
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return ret;
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#else
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int ret = sigprocmask (how, new_mask, old_mask);
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return (ret < 0 ? errno : 0);
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#endif
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}
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