1 /*
2 * Check decoding of sigprocmask syscall.
3 *
4 * Copyright (c) 2016-2017 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_sigprocmask
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
k_sigprocmask(const kernel_ulong_t how,const kernel_ulong_t new_set,const kernel_ulong_t old_set)44 k_sigprocmask(const kernel_ulong_t how, const kernel_ulong_t new_set,
45 const kernel_ulong_t old_set)
46 {
47 const long rc = syscall(__NR_sigprocmask, how, new_set, old_set);
48 errstr = sprintrc(rc);
49 return rc;
50 }
51
52 int
main(void)53 main(void)
54 {
55 static const kernel_ulong_t sig_block =
56 (kernel_ulong_t) 0xfacefeed00000000ULL | SIG_BLOCK;
57 static const kernel_ulong_t sig_unblock =
58 (kernel_ulong_t) 0xfacefeed00000000ULL | SIG_UNBLOCK;
59 static const kernel_ulong_t sig_setmask =
60 (kernel_ulong_t) 0xfacefeed00000000ULL | SIG_SETMASK;
61
62 if (k_sigprocmask(sig_setmask, 0, 0))
63 perror_msg_and_skip("sigprocmask");
64 puts("sigprocmask(SIG_SETMASK, NULL, NULL) = 0");
65
66 TAIL_ALLOC_OBJECT_CONST_PTR(kernel_ulong_t, new_set);
67 TAIL_ALLOC_OBJECT_CONST_PTR(kernel_ulong_t, old_set);
68 TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set);
69
70 memset(new_set, 0, sizeof(*new_set));
71 k_sigprocmask(sig_setmask, (uintptr_t) new_set, 0);
72 printf("sigprocmask(SIG_SETMASK, [], NULL) = %s\n", errstr);
73
74 k_sigprocmask(sig_unblock,
75 (uintptr_t) (new_set - 1), (uintptr_t) old_set);
76 puts("sigprocmask(SIG_UNBLOCK, ~[], []) = 0");
77
78 if (F8ILL_KULONG_SUPPORTED) {
79 k_sigprocmask(sig_unblock, f8ill_ptr_to_kulong(new_set), 0);
80 printf("sigprocmask(SIG_UNBLOCK, %#jx, NULL) = %s\n",
81 (uintmax_t) f8ill_ptr_to_kulong(new_set), errstr);
82
83 k_sigprocmask(sig_unblock, 0, f8ill_ptr_to_kulong(old_set));
84 printf("sigprocmask(SIG_UNBLOCK, NULL, %#jx) = %s\n",
85 (uintmax_t) f8ill_ptr_to_kulong(old_set), errstr);
86 }
87
88 sigemptyset(libc_set);
89 sigaddset(libc_set, SIGHUP);
90 memcpy(new_set, libc_set, sizeof(*new_set));
91
92 k_sigprocmask(sig_block, (uintptr_t) new_set, (uintptr_t) old_set);
93 puts("sigprocmask(SIG_BLOCK, [HUP], []) = 0");
94
95 memset(libc_set, -1, sizeof(*libc_set));
96 sigdelset(libc_set, SIGHUP);
97 memcpy(new_set, libc_set, sizeof(*new_set));
98
99 k_sigprocmask(sig_unblock, (uintptr_t) new_set, (uintptr_t) old_set);
100 puts("sigprocmask(SIG_UNBLOCK, ~[HUP], [HUP]) = 0");
101
102 sigdelset(libc_set, SIGKILL);
103 memcpy(new_set, libc_set, sizeof(*new_set));
104
105 k_sigprocmask(sig_unblock, (uintptr_t) new_set, (uintptr_t) old_set);
106 puts("sigprocmask(SIG_UNBLOCK, ~[HUP KILL], [HUP]) = 0");
107
108 sigemptyset(libc_set);
109 sigaddset(libc_set, SIGHUP);
110 sigaddset(libc_set, SIGINT);
111 sigaddset(libc_set, SIGQUIT);
112 sigaddset(libc_set, SIGALRM);
113 sigaddset(libc_set, SIGTERM);
114 memcpy(new_set, libc_set, sizeof(*new_set));
115
116 k_sigprocmask(sig_block, (uintptr_t) new_set, (uintptr_t) old_set);
117 printf("sigprocmask(SIG_BLOCK, %s, [HUP]) = 0\n",
118 "[HUP INT QUIT ALRM TERM]");
119
120 k_sigprocmask(sig_setmask, 0, (uintptr_t) old_set);
121 printf("sigprocmask(SIG_SETMASK, NULL, %s) = 0\n",
122 "[HUP INT QUIT ALRM TERM]");
123
124 k_sigprocmask(sig_setmask, (uintptr_t) (new_set + 1), 0);
125 printf("sigprocmask(SIG_SETMASK, %p, NULL) = %s\n",
126 new_set + 1, errstr);
127
128 k_sigprocmask(sig_setmask,
129 (uintptr_t) new_set, (uintptr_t) (old_set + 1));
130 printf("sigprocmask(SIG_SETMASK, %s, %p) = %s\n",
131 "[HUP INT QUIT ALRM TERM]", old_set + 1, errstr);
132
133 uintptr_t efault = sizeof(*new_set) / 2 + (uintptr_t) new_set;
134
135 k_sigprocmask(sig_setmask, efault, 0);
136 printf("sigprocmask(SIG_SETMASK, %#jx, NULL) = %s\n",
137 (uintmax_t) efault, errstr);
138
139 k_sigprocmask(sig_setmask, 0, efault);
140 printf("sigprocmask(SIG_SETMASK, NULL, %#jx) = %s\n",
141 (uintmax_t) efault, errstr);
142
143 puts("+++ exited with 0 +++");
144 return 0;
145 }
146
147 #else
148
149 SKIP_MAIN_UNDEFINED("__NR_sigprocmask")
150
151 #endif
152