1 /* 2 * Check decoding of sigpending syscall. 3 * 4 * Copyright (c) 2016-2017 Dmitry V. Levin <ldv (at) altlinux.org> 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 #include <asm/unistd.h> 32 33 #ifdef __NR_sigpending 34 35 # include <signal.h> 36 # include <stdint.h> 37 # include <stdio.h> 38 # include <string.h> 39 # include <unistd.h> 40 41 static const char *errstr; 42 43 static long 44 k_sigpending(const kernel_ulong_t set) 45 { 46 const long rc = syscall(__NR_sigpending, set); 47 errstr = sprintrc(rc); 48 return rc; 49 } 50 51 int 52 main(void) 53 { 54 TAIL_ALLOC_OBJECT_CONST_PTR(kernel_ulong_t, k_set); 55 TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set); 56 57 sigemptyset(libc_set); 58 if (sigprocmask(SIG_SETMASK, libc_set, NULL)) 59 perror_msg_and_fail("sigprocmask"); 60 61 if (k_sigpending((uintptr_t) libc_set)) 62 perror_msg_and_skip("sigpending"); 63 else 64 puts("sigpending([]) = 0"); 65 66 k_sigpending((uintptr_t) k_set); 67 puts("sigpending([]) = 0"); 68 69 k_sigpending((uintptr_t) (k_set + 1)); 70 printf("sigpending(%p) = -1 EFAULT (%m)\n", k_set + 1); 71 72 uintptr_t efault = sizeof(*k_set) / 2 + (uintptr_t) k_set; 73 k_sigpending(efault); 74 printf("sigpending(%#jx) = -1 EFAULT (%m)\n", (uintmax_t) efault); 75 76 sigaddset(libc_set, SIGHUP); 77 if (sigprocmask(SIG_SETMASK, libc_set, NULL)) 78 perror_msg_and_fail("sigprocmask"); 79 raise(SIGHUP); 80 81 k_sigpending((uintptr_t) k_set); 82 puts("sigpending([HUP]) = 0"); 83 84 sigaddset(libc_set, SIGINT); 85 if (sigprocmask(SIG_SETMASK, libc_set, NULL)) 86 perror_msg_and_fail("sigprocmask"); 87 raise(SIGINT); 88 89 k_sigpending((uintptr_t) k_set); 90 puts("sigpending([HUP INT]) = 0"); 91 92 if (F8ILL_KULONG_SUPPORTED) { 93 k_sigpending(f8ill_ptr_to_kulong(k_set)); 94 printf("sigpending(%#jx) = %s\n", 95 (uintmax_t) f8ill_ptr_to_kulong(k_set), errstr); 96 } 97 98 puts("+++ exited with 0 +++"); 99 return 0; 100 } 101 102 #else 103 104 SKIP_MAIN_UNDEFINED("__NR_sigpending") 105 106 #endif 107
