granicus.if.org Git - strace/blob - tests/prctl-no-args.c

   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@gmail.com>
   7  * Copyright (c) 2016-2018 The strace developers.
   8  * All rights reserved.
   9  *
  10  * SPDX-License-Identifier: GPL-2.0-or-later
  11  */
  12
  13 #include "tests.h"
  14 #include <asm/unistd.h>
  15
  16 #if defined __NR_prctl
  17
  18 # include <stdio.h>
  19 # include <unistd.h>
  20 # include <linux/prctl.h>
  21
  22 int
  23 main(void)
  24 {
  25         static const kernel_ulong_t bogus_op_bits =
  26                 (kernel_ulong_t) 0xbadc0ded00000000ULL;
  27         static const kernel_ulong_t bogus_arg =
  28                 (kernel_ulong_t) 0xfacefeeddeadbeefULL;
  29         static const struct {
  30                 kernel_ulong_t val;
  31                 const char *str;
  32         } options[] = {
  33                 {  7, "PR_GET_KEEPCAPS" },
  34                 { 13, "PR_GET_TIMING" },
  35                 { 21, "PR_GET_SECCOMP" },
  36                 { 30, "PR_GET_TIMERSLACK" },
  37                 { 31, "PR_TASK_PERF_EVENTS_DISABLE" },
  38                 { 32, "PR_TASK_PERF_EVENTS_ENABLE" },
  39         };
  40
  41         TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, ptr);
  42         unsigned int i;
  43
  44         for (i = 0; i < ARRAY_SIZE(options); i++) {
  45                 long rc = syscall(__NR_prctl, options[i].val | bogus_op_bits,
  46                                   bogus_arg);
  47                 printf("prctl(%s) = %s\n", options[i].str, sprintrc(rc));
  48         }
  49
  50         puts("+++ exited with 0 +++");
  51         return 0;
  52 }
  53
  54 #else
  55
  56 SKIP_MAIN_UNDEFINED("__NR_prctl")
  57
  58 #endif