5837421478
The language in POSIX mentioning overriding blocking or ignoring SIGABRT refers to the inevitability of exiting by SIGABRT if SIGABRT isn't caught or if the handler does return. This implementation of abort(3) implements the standard by raising SIGABRT, allowing the signal to be caught; and if the signal is blocked or ignored or the handler returns, then exit_thread(2) forcefully exits the process as if by SIGABRT.
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* Copyright (c) 2011, 2012, 2013, 2014, 2018 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* stdlib/abort.c
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* Abnormal process termination.
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*/
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#include <sys/wait.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifdef __is_sortix_libk
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#include <libk.h>
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#endif
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void abort(void)
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{
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#ifdef __is_sortix_libk
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libk_abort();
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#else
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raise(SIGABRT);
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int exit_code = WCONSTRUCT(WNATURE_SIGNALED, 128 + SIGABRT, SIGABRT);
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int exit_flags = EXIT_THREAD_PROCESS | EXIT_THREAD_DUMP_CORE;
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exit_thread(exit_code, exit_flags, NULL);
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__builtin_unreachable();
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#endif
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}
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