/*
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* Check decoding of SPARC-specific kern_features syscall.
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*
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* Copyright (c) 2018 The strace developers.
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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 "tests.h"
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#include <asm/unistd.h>
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#include "raw_syscall.h"
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#include "scno.h"
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#if defined __NR_kern_features && defined raw_syscall_0
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# include <errno.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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static void
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test_kern_features(unsigned int num)
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{
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/* The expected return codes, as enforced by fault injection */
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static struct {
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kernel_ulong_t ret;
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const char *str;
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} checks[] = {
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{ 0, NULL },
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{ 1, "KERN_FEATURE_MIXED_MODE_STACK" },
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{ 2, "0x2" },
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{ 0x7ffffffe, "0x7ffffffe" },
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{ 0x7fffffff, "KERN_FEATURE_MIXED_MODE_STACK|0x7ffffffe" },
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{ (kernel_ulong_t) 0xbadc0deddeadfaceULL,
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sizeof(kernel_ulong_t) == 8 ?
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"0xbadc0deddeadface" : "0xdeadface" },
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{ (kernel_ulong_t) -1ULL,
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sizeof(kernel_ulong_t) == 8 ?
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"KERN_FEATURE_MIXED_MODE_STACK|0xfffffffffffffffe" :
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"KERN_FEATURE_MIXED_MODE_STACK|0xfffffffe" },
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};
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kernel_ulong_t err = 0;
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kernel_ulong_t rc = raw_syscall_0(__NR_kern_features, &err);
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if (err) {
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errno = rc;
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printf("kern_features() = %s\n", sprintrc(-1));
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return;
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}
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printf("kern_features() = %#llx", (unsigned long long) rc);
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if (num < ARRAY_SIZE(checks)) {
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if (rc != checks[num].ret)
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error_msg_and_fail("Expected return value (%llx) "
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"doesn't match expected one (%#llx)",
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(unsigned long long) rc,
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(unsigned long long) checks[num].ret);
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if (checks[num].str)
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printf(" (%s)", checks[num].str);
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printf(" (INJECTED)");
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} else if (rc) {
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printf(" (");
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if (rc & 1)
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printf("KERN_FEATURE_MIXED_MODE_STACK");
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if (rc & ~1ULL) {
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if (rc & 1)
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printf("|");
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printf("%#llx", rc & ~1ULL);
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}
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printf(")");
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}
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puts("");
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}
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int
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main(int ac, char **av)
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{
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test_kern_features(ac > 1 ? atoi(av[1]) : -1);
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_kern_features && raw_syscall_0");
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#endif
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