1 /* 2 * Check decoding of kcmp syscall. 3 * 4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "tests.h" 31 32 #include <asm/unistd.h> 33 #include "scno.h" 34 35 #ifdef __NR_kcmp 36 37 # include <stdio.h> 38 # include <unistd.h> 39 40 # define KCMP_FILE 0 41 # define KCMP_SYSVSEM 6 42 43 static void 44 do_kcmp(kernel_ulong_t pid1, kernel_ulong_t pid2, kernel_ulong_t type, 45 const char *type_str, kernel_ulong_t idx1, kernel_ulong_t idx2) 46 { 47 long rc; 48 const char *errstr; 49 50 rc = syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2); 51 errstr = sprintrc(rc); 52 53 printf("kcmp(%d, %d, ", (int) pid1, (int) pid2); 54 55 if (type_str) 56 printf("%s", type_str); 57 else 58 printf("%#x /* KCMP_??? */", (int) type); 59 60 if (type == KCMP_FILE) 61 printf(", %u, %u", (unsigned) idx1, (unsigned) idx2); 62 else if (type > KCMP_SYSVSEM) 63 printf(", %#llx, %#llx", 64 (unsigned long long) idx1, (unsigned long long) idx2); 65 66 printf(") = %s\n", errstr); 67 } 68 69 int 70 main(void) 71 { 72 static const kernel_ulong_t bogus_pid1 = 73 (kernel_ulong_t) 0xdeadca75face1057ULL; 74 static const kernel_ulong_t bogus_pid2 = 75 (kernel_ulong_t) 0xdefaced1defaced2ULL; 76 static const kernel_ulong_t bogus_type = 77 (kernel_ulong_t) 0xbadc0dedda7adeadULL; 78 static const kernel_ulong_t bogus_idx1 = 79 (kernel_ulong_t) 0xdec0ded3dec0ded4ULL; 80 static const kernel_ulong_t bogus_idx2 = 81 (kernel_ulong_t) 0xba5e1e55deadc0deULL; 82 83 /* Invalid values */ 84 do_kcmp(bogus_pid1, bogus_pid2, bogus_type, NULL, bogus_idx1, 85 bogus_idx2); 86 do_kcmp(0, 0, KCMP_SYSVSEM + 1, NULL, 0, 0); 87 88 /* KCMP_FILE is the only type which has additional args */ 89 do_kcmp(3141592653U, 2718281828U, ARG_STR(KCMP_FILE), bogus_idx1, 90 bogus_idx2); 91 /* Some type without additional args */ 92 do_kcmp(-1, -1, ARG_STR(KCMP_SYSVSEM), bogus_idx1, bogus_idx2); 93 94 puts("+++ exited with 0 +++"); 95 96 return 0; 97 } 98 99 #else 100 101 SKIP_MAIN_UNDEFINED("__NR_kcmp"); 102 103 #endif 104
