104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/*
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* Check decoding of kcmp syscall.
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*
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* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
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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 "scno.h"
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#ifdef __NR_kcmp
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# include <stdio.h>
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# include <unistd.h>
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# define KCMP_FILE 0
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# define KCMP_SYSVSEM 6
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static void
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do_kcmp(kernel_ulong_t pid1, kernel_ulong_t pid2, kernel_ulong_t type,
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const char *type_str, kernel_ulong_t idx1, kernel_ulong_t idx2)
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{
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long rc;
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const char *errstr;
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rc = syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
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errstr = sprintrc(rc);
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printf("kcmp(%d, %d, ", (int) pid1, (int) pid2);
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if (type_str)
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printf("%s", type_str);
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else
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printf("%#x /* KCMP_??? */", (int) type);
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if (type == KCMP_FILE)
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printf(", %u, %u", (unsigned) idx1, (unsigned) idx2);
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else if (type > KCMP_SYSVSEM)
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printf(", %#llx, %#llx",
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(unsigned long long) idx1, (unsigned long long) idx2);
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printf(") = %s\n", errstr);
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}
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int
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main(void)
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{
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static const kernel_ulong_t bogus_pid1 =
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(kernel_ulong_t) 0xdeadca75face1057ULL;
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static const kernel_ulong_t bogus_pid2 =
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(kernel_ulong_t) 0xdefaced1defaced2ULL;
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static const kernel_ulong_t bogus_type =
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(kernel_ulong_t) 0xbadc0dedda7adeadULL;
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static const kernel_ulong_t bogus_idx1 =
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(kernel_ulong_t) 0xdec0ded3dec0ded4ULL;
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static const kernel_ulong_t bogus_idx2 =
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(kernel_ulong_t) 0xba5e1e55deadc0deULL;
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/* Invalid values */
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do_kcmp(bogus_pid1, bogus_pid2, bogus_type, NULL, bogus_idx1,
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bogus_idx2);
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do_kcmp(0, 0, KCMP_SYSVSEM + 1, NULL, 0, 0);
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/* KCMP_FILE is the only type which has additional args */
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do_kcmp(3141592653U, 2718281828U, ARG_STR(KCMP_FILE), bogus_idx1,
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bogus_idx2);
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/* Some type without additional args */
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do_kcmp(-1, -1, ARG_STR(KCMP_SYSVSEM), bogus_idx1, bogus_idx2);
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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_kcmp");
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#endif
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