62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* Copyright (c) 2014, 2015, 2021 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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* ssp/__stack_chk_fail.c
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* Abnormally terminate the process on stack smashing.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <scram.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <__/wordsize.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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#if __WORDSIZE == 32
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#define STACK_CHK_GUARD 0x01234567
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#elif __WORDSIZE == 64
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#define STACK_CHK_GUARD 0x0123456789ABCDEF
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#endif
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#ifdef __is_sortix_libk
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/* TODO: Have this filled in by the program loader. */
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#else
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/* TODO: Have this filled in by the boot loader. */
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#endif
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uintptr_t __stack_chk_guard = STACK_CHK_GUARD;
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__attribute__((noreturn))
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void __stack_chk_fail(void)
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{
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#ifdef __is_sortix_libk
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libk_stack_chk_fail();
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#else
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scram(SCRAM_STACK_SMASH, NULL);
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#endif
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}
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__attribute__((noreturn))
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void __stack_chk_fail_local(void)
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{
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__stack_chk_fail();
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}
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