1 /* 2 * Check decoding of prctl operations without arguments and return code parsing: 3 * PR_GET_KEEPCAPS, PR_GET_SECCOMP, PR_GET_TIMERSLACK, PR_GET_TIMING, 4 * PR_TASK_PERF_EVENTS_DISABLE, and PR_TASK_PERF_EVENTS_ENABLE. 5 * 6 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include "tests.h" 33 #include <asm/unistd.h> 34 35 #if defined __NR_prctl 36 37 # include <stdio.h> 38 # include <unistd.h> 39 # include <linux/prctl.h> 40 41 int 42 main(void) 43 { 44 static const kernel_ulong_t bogus_op_bits = 45 (kernel_ulong_t) 0xbadc0ded00000000ULL; 46 static const kernel_ulong_t bogus_arg = 47 (kernel_ulong_t) 0xfacefeeddeadbeefULL; 48 static const struct { 49 kernel_ulong_t val; 50 const char *str; 51 } options[] = { 52 { 7, "PR_GET_KEEPCAPS" }, 53 { 13, "PR_GET_TIMING" }, 54 { 21, "PR_GET_SECCOMP" }, 55 { 30, "PR_GET_TIMERSLACK" }, 56 { 31, "PR_TASK_PERF_EVENTS_DISABLE" }, 57 { 32, "PR_TASK_PERF_EVENTS_ENABLE" }, 58 }; 59 60 unsigned int *ptr = tail_alloc(sizeof(*ptr)); 61 unsigned int i; 62 63 for (i = 0; i < ARRAY_SIZE(options); i++) { 64 long rc = syscall(__NR_prctl, options[i].val | bogus_op_bits, 65 bogus_arg); 66 printf("prctl(%s) = %s\n", options[i].str, sprintrc(rc)); 67 } 68 69 puts("+++ exited with 0 +++"); 70 return 0; 71 } 72 73 #else 74 75 SKIP_MAIN_UNDEFINED("__NR_prctl") 76 77 #endif 78
