1 /*
2 * Check decoding of ppoll syscall.
3 *
4 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@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_ppoll
34
35 # include <errno.h>
36 # include <poll.h>
37 # include <signal.h>
38 # include <stdio.h>
39 # include <string.h>
40 # include <unistd.h>
41
42 static const char *errstr;
43
44 static long
sys_ppoll(const kernel_ulong_t ufds,const kernel_ulong_t nfds,const kernel_ulong_t tsp,const kernel_ulong_t sigmask,const kernel_ulong_t sigsetsize)45 sys_ppoll(const kernel_ulong_t ufds,
46 const kernel_ulong_t nfds,
47 const kernel_ulong_t tsp,
48 const kernel_ulong_t sigmask,
49 const kernel_ulong_t sigsetsize)
50 {
51 long rc = syscall(__NR_ppoll, ufds, nfds, tsp, sigmask, sigsetsize);
52 errstr = sprintrc(rc);
53 return rc;
54 }
55
56 int
main(void)57 main(void)
58 {
59 static const kernel_ulong_t bogus_nfds =
60 (kernel_ulong_t) 0xdeadbeeffacefeedULL;
61 static const kernel_ulong_t bogus_sigsetsize =
62 (kernel_ulong_t) 0xdeadbeefbadc0dedULL;
63 static const char *const POLLWRNORM_str =
64 (POLLWRNORM == POLLOUT) ? "" : "|POLLWRNORM";
65 static const char *const USR2_CHLD_str =
66 (SIGUSR2 < SIGCHLD) ? "USR2 CHLD" : "CHLD USR2";
67 void *const efault = tail_alloc(1024) + 1024;
68 TAIL_ALLOC_OBJECT_CONST_PTR(struct timespec, ts);
69 const unsigned int sigset_size = get_sigset_size();
70 void *const sigmask = tail_alloc(sigset_size);
71 struct pollfd *fds;
72 sigset_t mask;
73 int pipe_fd[4];
74 long rc;
75
76 sys_ppoll(0, bogus_nfds, 0, 0, bogus_sigsetsize);
77 if (ENOSYS == errno)
78 perror_msg_and_skip("ppoll");
79 printf("ppoll(NULL, %u, NULL, NULL, %llu) = %s\n",
80 (unsigned) bogus_nfds, (unsigned long long) bogus_sigsetsize,
81 errstr);
82
83 sys_ppoll((unsigned long) efault, 42, (unsigned long) efault + 8,
84 (unsigned long) efault + 16, sigset_size);
85 printf("ppoll(%p, %u, %p, %p, %u) = %s\n",
86 efault, 42, efault + 8, efault + 16, sigset_size, errstr);
87
88 ts->tv_sec = 0xdeadbeefU;
89 ts->tv_nsec = 0xfacefeedU;
90 sys_ppoll(0, 0, (unsigned long) ts, 0, sigset_size);
91 printf("ppoll(NULL, 0, {tv_sec=%lld, tv_nsec=%llu}, NULL, %u) = %s\n",
92 (long long) ts->tv_sec, zero_extend_signed_to_ull(ts->tv_nsec),
93 sigset_size, errstr);
94
95 ts->tv_sec = (time_t) 0xcafef00ddeadbeefLL;
96 ts->tv_nsec = (long) 0xbadc0dedfacefeedL;
97 sys_ppoll(0, 0, (unsigned long) ts, 0, sigset_size);
98 printf("ppoll(NULL, 0, {tv_sec=%lld, tv_nsec=%llu}, NULL, %u) = %s\n",
99 (long long) ts->tv_sec, zero_extend_signed_to_ull(ts->tv_nsec),
100 sigset_size, errstr);
101
102 if (pipe(pipe_fd) || pipe(pipe_fd + 2))
103 perror_msg_and_fail("pipe");
104
105 ts->tv_sec = 42;
106 ts->tv_nsec = 999999999;
107
108 const struct pollfd fds1[] = {
109 { .fd = pipe_fd[0], .events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND },
110 { .fd = pipe_fd[1], .events = POLLOUT | POLLWRNORM | POLLWRBAND },
111 { .fd = pipe_fd[2], .events = POLLIN | POLLPRI },
112 { .fd = pipe_fd[3], .events = POLLOUT }
113 };
114 fds = efault - sizeof(fds1);
115 memcpy(fds, fds1, sizeof(fds1));
116
117 sigemptyset(&mask);
118 sigaddset(&mask, SIGUSR2);
119 sigaddset(&mask, SIGCHLD);
120 memcpy(sigmask, &mask, sigset_size);
121
122 rc = sys_ppoll((unsigned long) fds,
123 F8ILL_KULONG_MASK | ARRAY_SIZE(fds1), (unsigned long) ts,
124 (unsigned long) sigmask, sigset_size);
125 if (rc != 2)
126 perror_msg_and_fail("ppoll 1");
127 printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}"
128 ", {fd=%d, events=POLLOUT%s|POLLWRBAND}"
129 #if VERBOSE
130 ", {fd=%d, events=POLLIN|POLLPRI}, {fd=%d, events=POLLOUT}]"
131 #else
132 ", ...]"
133 #endif
134 ", %u, {tv_sec=42, tv_nsec=999999999}, [%s], %u) = %ld"
135 " ([{fd=%d, revents=POLLOUT%s}, {fd=%d, revents=POLLOUT}]"
136 ", left {tv_sec=%u, tv_nsec=%u})\n",
137 pipe_fd[0], pipe_fd[1], POLLWRNORM_str,
138 #if VERBOSE
139 pipe_fd[2], pipe_fd[3],
140 #endif
141 (unsigned int) ARRAY_SIZE(fds1), USR2_CHLD_str,
142 (unsigned int) sigset_size, rc, pipe_fd[1], POLLWRNORM_str,
143 pipe_fd[3], (unsigned int) ts->tv_sec,
144 (unsigned int) ts->tv_nsec);
145
146 ts->tv_sec = 0;
147 ts->tv_nsec = 999;
148 const struct pollfd fds2[] = {
149 { .fd = pipe_fd[1], .events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND },
150 { .fd = pipe_fd[0], .events = POLLOUT | POLLWRNORM | POLLWRBAND }
151 };
152 fds = efault - sizeof(fds2);
153 memcpy(fds, fds2, sizeof(fds2));
154
155 memset(&mask, -1, sizeof(mask));
156 sigdelset(&mask, SIGHUP);
157 sigdelset(&mask, SIGKILL);
158 sigdelset(&mask, SIGSTOP);
159 memcpy(sigmask, &mask, sigset_size);
160
161 rc = sys_ppoll((unsigned long) fds,
162 F8ILL_KULONG_MASK | ARRAY_SIZE(fds2), (unsigned long) ts,
163 (unsigned long) sigmask, sigset_size);
164 if (rc != 0)
165 perror_msg_and_fail("ppoll 2");
166 printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}"
167 ", {fd=%d, events=POLLOUT%s|POLLWRBAND}], %u"
168 ", {tv_sec=0, tv_nsec=999}, ~[HUP KILL STOP], %u)"
169 " = %ld (Timeout)\n",
170 pipe_fd[1], pipe_fd[0], POLLWRNORM_str,
171 (unsigned) ARRAY_SIZE(fds2), sigset_size, rc);
172
173 if (F8ILL_KULONG_SUPPORTED) {
174 sys_ppoll(f8ill_ptr_to_kulong(fds), ARRAY_SIZE(fds2),
175 f8ill_ptr_to_kulong(ts), f8ill_ptr_to_kulong(sigmask),
176 sigset_size);
177 printf("ppoll(%#llx, %u, %#llx, %#llx, %u) = %s\n",
178 (unsigned long long) f8ill_ptr_to_kulong(fds),
179 (unsigned) ARRAY_SIZE(fds2),
180 (unsigned long long) f8ill_ptr_to_kulong(ts),
181 (unsigned long long) f8ill_ptr_to_kulong(sigmask),
182 (unsigned) sigset_size, errstr);
183 }
184
185 puts("+++ exited with 0 +++");
186 return 0;
187 }
188
189 #else
190
191 SKIP_MAIN_UNDEFINED("__NR_ppoll")
192
193 #endif
194