| /* |
| * Check decoding of SPARC-specific kern_features syscall. |
| * |
| * Copyright (c) 2018 The strace developers. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "tests.h" |
| |
| #include <asm/unistd.h> |
| |
| #include "raw_syscall.h" |
| #include "scno.h" |
| |
| #if defined __NR_kern_features && defined raw_syscall_0 |
| |
| # include <errno.h> |
| # include <stdio.h> |
| # include <stdlib.h> |
| # include <unistd.h> |
| |
| static void |
| test_kern_features(unsigned int num) |
| { |
| /* The expected return codes, as enforced by fault injection */ |
| static struct { |
| kernel_ulong_t ret; |
| const char *str; |
| } checks[] = { |
| { 0, NULL }, |
| { 1, "KERN_FEATURE_MIXED_MODE_STACK" }, |
| { 2, "0x2" }, |
| { 0x7ffffffe, "0x7ffffffe" }, |
| { 0x7fffffff, "KERN_FEATURE_MIXED_MODE_STACK|0x7ffffffe" }, |
| { (kernel_ulong_t) 0xbadc0deddeadfaceULL, |
| sizeof(kernel_ulong_t) == 8 ? |
| "0xbadc0deddeadface" : "0xdeadface" }, |
| { (kernel_ulong_t) -1ULL, |
| sizeof(kernel_ulong_t) == 8 ? |
| "KERN_FEATURE_MIXED_MODE_STACK|0xfffffffffffffffe" : |
| "KERN_FEATURE_MIXED_MODE_STACK|0xfffffffe" }, |
| }; |
| |
| kernel_ulong_t err = 0; |
| kernel_ulong_t rc = raw_syscall_0(__NR_kern_features, &err); |
| |
| if (err) { |
| errno = rc; |
| printf("kern_features() = %s\n", sprintrc(-1)); |
| return; |
| } |
| |
| printf("kern_features() = %#llx", (unsigned long long) rc); |
| |
| if (num < ARRAY_SIZE(checks)) { |
| if (rc != checks[num].ret) |
| error_msg_and_fail("Expected return value (%llx) " |
| "doesn't match expected one (%#llx)", |
| (unsigned long long) rc, |
| (unsigned long long) checks[num].ret); |
| |
| if (checks[num].str) |
| printf(" (%s)", checks[num].str); |
| |
| printf(" (INJECTED)"); |
| } else if (rc) { |
| printf(" ("); |
| |
| if (rc & 1) |
| printf("KERN_FEATURE_MIXED_MODE_STACK"); |
| |
| if (rc & ~1ULL) { |
| if (rc & 1) |
| printf("|"); |
| |
| printf("%#llx", rc & ~1ULL); |
| } |
| |
| printf(")"); |
| } |
| |
| puts(""); |
| } |
| |
| int |
| main(int ac, char **av) |
| { |
| test_kern_features(ac > 1 ? atoi(av[1]) : -1); |
| |
| puts("+++ exited with 0 +++"); |
| return 0; |
| } |
| |
| #else |
| |
| SKIP_MAIN_UNDEFINED("__NR_kern_features && raw_syscall_0"); |
| |
| #endif |