2 * This file is part of rt_sigpending strace test.
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
31 #include <asm/unistd.h>
33 #ifdef __NR_rt_sigpending
42 k_sigpending(void *const set, const unsigned long size)
44 return syscall(__NR_rt_sigpending, set, size);
48 iterate(const char *const text, unsigned int size, void *set)
51 if (k_sigpending(set, size)) {
52 tprintf("rt_sigpending(%p, %u) = -1 EFAULT (%m)\n",
58 if (size < sizeof(long))
59 tprintf("rt_sigpending(%s, %u) = 0\n",
63 tprintf("rt_sigpending(%s, %u) = 0\n",
66 tprintf("rt_sigpending(%p, %u) = 0\n", set, size);
79 const unsigned int big_size = 1024 / 8;
80 void *k_set = tail_alloc(big_size);
81 TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set);
83 sigemptyset(libc_set);
84 if (sigprocmask(SIG_SETMASK, libc_set, NULL))
85 perror_msg_and_fail("sigprocmask");
87 memset(k_set, 0, big_size);
88 unsigned int set_size = big_size;
89 for (; set_size; set_size >>= 1, k_set += set_size) {
90 if (!k_sigpending(k_set, set_size))
92 tprintf("rt_sigpending(%p, %u) = -1 EINVAL (%m)\n",
96 perror_msg_and_fail("rt_sigpending");
97 tprintf("rt_sigpending(%s, %u) = 0\n", "[]", set_size);
99 iterate("[]", set_size >> 1, k_set + (set_size >> 1));
101 void *const efault = k_set + (set_size >> 1);
102 assert(k_sigpending(efault, set_size) == -1);
103 tprintf("rt_sigpending(%p, %u) = -1 EFAULT (%m)\n",
106 sigaddset(libc_set, SIGHUP);
107 if (sigprocmask(SIG_SETMASK, libc_set, NULL))
108 perror_msg_and_fail("sigprocmask");
111 iterate("[HUP]", set_size, k_set);
113 sigaddset(libc_set, SIGINT);
114 if (sigprocmask(SIG_SETMASK, libc_set, NULL))
115 perror_msg_and_fail("sigprocmask");
118 iterate("[HUP INT]", set_size, k_set);
120 tprintf("+++ exited with 0 +++\n");
126 SKIP_MAIN_UNDEFINED("__NR_rt_sigpending")