granicus.if.org Git - strace/blob - tests/rt_sigtimedwait.c

   1 /*
   2  * This file is part of rt_sigtimedwait strace test.
   3  *
   4  * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
   5  * Copyright (c) 2016-2019 The strace developers.
   6  * All rights reserved.
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "tests.h"
  12 #include "scno.h"
  13
  14 #ifdef __NR_rt_sigtimedwait
  15
  16 # include <assert.h>
  17 # include <errno.h>
  18 # include <signal.h>
  19 # include <stdio.h>
  20 # include <stdint.h>
  21 # include <string.h>
  22 # include <unistd.h>
  23
  24 static long
  25 k_sigtimedwait(const sigset_t *const set, siginfo_t *const info,
  26                const struct timespec *const timeout, const unsigned long size)
  27 {
  28         return syscall(__NR_rt_sigtimedwait, set, info, timeout, size);
  29 }
  30
  31 static void
  32 iterate(const char *const text, const void *set,
  33         const struct timespec *const timeout, unsigned int size)
  34 {
  35         for (;;) {
  36                 assert(k_sigtimedwait(set, NULL, timeout, size) == -1);
  37                 if (EINTR == errno) {
  38                         tprintf("rt_sigtimedwait(%s, NULL"
  39                                 ", {tv_sec=%lld, tv_nsec=%llu}, %u)"
  40                                 " = -1 EAGAIN (%m)\n", text,
  41                                 (long long) timeout->tv_sec,
  42                                 zero_extend_signed_to_ull(timeout->tv_nsec),
  43                                 size);
  44                 } else {
  45                         if (size < sizeof(long))
  46                                 tprintf("rt_sigtimedwait(%p, NULL"
  47                                         ", {tv_sec=%lld, tv_nsec=%llu}"
  48                                         ", %u) = -1 EINVAL (%m)\n",
  49                                         set, (long long) timeout->tv_sec,
  50                                         zero_extend_signed_to_ull(timeout->tv_nsec),
  51                                         size);
  52                         else
  53                                 tprintf("rt_sigtimedwait(%s, NULL"
  54                                         ", {tv_sec=%lld, tv_nsec=%llu}"
  55                                         ", %u) = -1 EINVAL (%m)\n",
  56                                         text, (long long) timeout->tv_sec,
  57                                         zero_extend_signed_to_ull(timeout->tv_nsec),
  58                                         size);
  59                 }
  60                 if (!size)
  61                         break;
  62                 size >>= 1;
  63                 set += size;
  64         }
  65 }
  66
  67 int
  68 main(void)
  69 {
  70         tprintf("%s", "");
  71
  72         TAIL_ALLOC_OBJECT_CONST_PTR(siginfo_t, info);
  73         TAIL_ALLOC_OBJECT_CONST_PTR(struct timespec, timeout);
  74         timeout->tv_sec = 0;
  75         timeout->tv_nsec = 42;
  76
  77         const unsigned int big_size = 1024 / 8;
  78         void *k_set = tail_alloc(big_size);
  79         memset(k_set, 0, big_size);
  80
  81         unsigned int set_size = big_size;
  82         for (; set_size; set_size >>= 1, k_set += set_size) {
  83                 assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1);
  84                 if (EAGAIN == errno)
  85                         break;
  86                 tprintf("rt_sigtimedwait(%p, NULL, {tv_sec=%lld, tv_nsec=%llu}"
  87                         ", %u) = -1 EINVAL (%m)\n",
  88                         k_set, (long long) timeout->tv_sec,
  89                         zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
  90         }
  91         if (!set_size)
  92                 perror_msg_and_fail("rt_sigtimedwait");
  93         tprintf("rt_sigtimedwait([], NULL, {tv_sec=%lld, tv_nsec=%llu}, %u)"
  94                 " = -1 EAGAIN (%m)\n",
  95                 (long long) timeout->tv_sec,
  96                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
  97
  98         timeout->tv_sec = 0xdeadbeefU;
  99         timeout->tv_nsec = 0xfacefeedU;
 100         assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1);
 101         tprintf("rt_sigtimedwait([], NULL, {tv_sec=%lld, tv_nsec=%llu}"
 102                 ", %u) = -1 EINVAL (%m)\n",
 103                 (long long) timeout->tv_sec,
 104                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
 105
 106         timeout->tv_sec = (time_t) 0xcafef00ddeadbeefLL;
 107         timeout->tv_nsec = (long) 0xbadc0dedfacefeedLL;
 108         assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1);
 109         tprintf("rt_sigtimedwait([], NULL, {tv_sec=%lld, tv_nsec=%llu}"
 110                 ", %u) = -1 EINVAL (%m)\n",
 111                 (long long) timeout->tv_sec,
 112                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
 113
 114         timeout->tv_sec = 0;
 115         timeout->tv_nsec = 42;
 116
 117         TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set);
 118         sigemptyset(libc_set);
 119         sigaddset(libc_set, SIGHUP);
 120         memcpy(k_set, libc_set, set_size);
 121
 122         assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1);
 123         assert(EAGAIN == errno);
 124         tprintf("rt_sigtimedwait([HUP], %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
 125                 " = -1 EAGAIN (%m)\n",
 126                 info, (long long) timeout->tv_sec,
 127                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
 128
 129         sigaddset(libc_set, SIGINT);
 130         memcpy(k_set, libc_set, set_size);
 131
 132         assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1);
 133         assert(EAGAIN == errno);
 134         tprintf("rt_sigtimedwait([HUP INT], %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
 135                 " = -1 EAGAIN (%m)\n",
 136                 info, (long long) timeout->tv_sec,
 137                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
 138
 139         sigaddset(libc_set, SIGQUIT);
 140         sigaddset(libc_set, SIGALRM);
 141         sigaddset(libc_set, SIGTERM);
 142         memcpy(k_set, libc_set, set_size);
 143
 144         assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1);
 145         assert(EAGAIN == errno);
 146         tprintf("rt_sigtimedwait(%s, %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
 147                 " = -1 EAGAIN (%m)\n",
 148                 "[HUP INT QUIT ALRM TERM]",
 149                 info, (long long) timeout->tv_sec,
 150                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
 151
 152         memset(k_set - set_size, -1, set_size);
 153         assert(k_sigtimedwait(k_set - set_size, info, timeout, set_size) == -1);
 154         assert(EAGAIN == errno);
 155         tprintf("rt_sigtimedwait(~[], %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
 156                 " = -1 EAGAIN (%m)\n",
 157                 info, (long long) timeout->tv_sec,
 158                 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
 159
 160         if (sigprocmask(SIG_SETMASK, libc_set, NULL))
 161                 perror_msg_and_fail("sigprocmask");
 162
 163         assert(k_sigtimedwait(k_set - set_size, info, NULL, set_size << 1) == -1);
 164         tprintf("rt_sigtimedwait(%p, %p, NULL, %u) = -1 EINVAL (%m)\n",
 165                 k_set - set_size, info, set_size << 1);
 166
 167         iterate("~[]", k_set - set_size, timeout, set_size >> 1);
 168
 169         timeout->tv_sec = 1;
 170         raise(SIGALRM);
 171         assert(k_sigtimedwait(k_set, info, timeout, set_size) == SIGALRM);
 172         tprintf("rt_sigtimedwait(%s, {si_signo=%s, si_code=SI_TKILL"
 173                 ", si_pid=%d, si_uid=%d}, {tv_sec=%lld, tv_nsec=%llu}, %u)"
 174                 " = %d (%s)\n",
 175                 "[HUP INT QUIT ALRM TERM]", "SIGALRM", getpid(), getuid(),
 176                 (long long) timeout->tv_sec,
 177                 zero_extend_signed_to_ull(timeout->tv_nsec),
 178                 set_size, SIGALRM, "SIGALRM");
 179
 180         raise(SIGALRM);
 181         assert(k_sigtimedwait(k_set, NULL, NULL, set_size) == SIGALRM);
 182         tprintf("rt_sigtimedwait(%s, NULL, NULL, %u) = %d (%s)\n",
 183                 "[HUP INT QUIT ALRM TERM]", set_size, SIGALRM, "SIGALRM");
 184
 185         tprintf("+++ exited with 0 +++\n");
 186         return 0;
 187 }
 188
 189 #else
 190
 191 SKIP_MAIN_UNDEFINED("__NR_rt_sigtimedwait")
 192
 193 #endif