Dmitry V. Levin
3b6bc9b40d
As most syscalls on x32 and mips n32 are actually 64-bit, check that 64-bit syscall arguments are decoded properly. This also workarounds x32 gcc sign extension bug reported by Eugene Syromyatnikov at https://sourceforge.net/p/strace/mailman/message/35150860/ * tests/nsyscalls.c: Include "kernel_types.h". (main): Change the type of syscall arguments to kernel_ulong_t.
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/*
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* Check decoding of out-of-range syscalls.
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*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include "kernel_types.h"
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#include "syscall.h"
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#define TD 0
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#define TF 0
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#define TI 0
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#define TN 0
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#define TP 0
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#define TS 0
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#define TM 0
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#define NF 0
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#define MA 0
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#define SI 0
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#define SE 0
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#define SEN(arg) 0,0
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static const struct_sysent syscallent[] = {
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#include "syscallent.h"
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};
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#include <sys/syscall.h>
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#if defined __X32_SYSCALL_BIT && defined __NR_read \
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&& (__X32_SYSCALL_BIT & __NR_read) != 0
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# define SYSCALL_BIT __X32_SYSCALL_BIT
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#else
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# define SYSCALL_BIT 0
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#endif
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static const unsigned long nr = ARRAY_SIZE(syscallent) | SYSCALL_BIT;
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int
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main(void)
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{
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static const kernel_ulong_t a[] = {
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(kernel_ulong_t) 0xface0fedbadc0ded,
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(kernel_ulong_t) 0xface1fedbadc1ded,
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(kernel_ulong_t) 0xface2fedbadc2ded,
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(kernel_ulong_t) 0xface3fedbadc3ded,
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(kernel_ulong_t) 0xface4fedbadc4ded,
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(kernel_ulong_t) 0xface5fedbadc5ded
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};
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long rc = syscall(nr, a[0], a[1], a[2], a[3], a[4], a[5]);
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#ifdef LINUX_MIPSO32
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printf("syscall(%#lx, %#lx, %#lx, %#lx, %#lx, %#lx, %#lx)"
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" = %ld ENOSYS (%m)\n", nr,
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a[0], a[1], a[2], a[3], a[4], a[5], rc);
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#else
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printf("syscall_%lu(%#llx, %#llx, %#llx, %#llx, %#llx, %#llx)"
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" = %ld (errno %d)\n", nr & (~SYSCALL_BIT),
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(unsigned long long) a[0],
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(unsigned long long) a[1],
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(unsigned long long) a[2],
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(unsigned long long) a[3],
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(unsigned long long) a[4],
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(unsigned long long) a[5],
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rc, errno);
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#endif
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puts("+++ exited with 0 +++");
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return 0;
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}
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