1 /*
2 * Check decoding of sgetmask and ssetmask syscalls.
3 *
4 * Copyright (c) 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 #if defined __NR_sgetmask && defined __NR_ssetmask
34
35 # include <errno.h>
36 # include <signal.h>
37 # include <stdio.h>
38 # include <stdint.h>
39 # include <string.h>
40 # include <unistd.h>
41
42 static long
k_sgetmask(void)43 k_sgetmask(void)
44 {
45 return syscall(__NR_sgetmask);
46 }
47
48 static long
k_ssetmask(const kernel_ulong_t arg)49 k_ssetmask(const kernel_ulong_t arg)
50 {
51 return syscall(__NR_ssetmask, arg);
52 }
53
54 int
main(void)55 main(void)
56 {
57 union {
58 sigset_t libc_mask;
59 unsigned long old_mask;
60 } uset, uget;
61 long rc;
62
63 /*
64 * Block, reset, and raise SIGUSR1.
65 * If a subsequent ssetmask call fails to set the proper mask,
66 * the process will be terminated by SIGUSR1.
67 */
68 sigemptyset(&uset.libc_mask);
69 sigaddset(&uset.libc_mask, SIGUSR1);
70 if (sigprocmask(SIG_SETMASK, &uset.libc_mask, NULL))
71 perror_msg_and_fail("sigprocmask");
72 if (signal(SIGUSR1, SIG_DFL) == SIG_ERR)
73 perror_msg_and_fail("signal");
74 raise(SIGUSR1);
75
76 sigaddset(&uset.libc_mask, SIGUSR2);
77 rc = k_ssetmask((kernel_ulong_t) 0xfacefeed00000000ULL | uset.old_mask);
78 if (rc == -1L) {
79 printf("ssetmask([USR1 USR2]) = %s\n", sprintrc(rc));
80 } else {
81 printf("ssetmask([USR1 USR2]) = %#lx (old mask [USR1])\n", rc);
82 /*
83 * Use a regular sigprocmask call to check the value
84 * returned by the ssetmask call being tested.
85 */
86 if (sigprocmask(SIG_SETMASK, NULL, &uget.libc_mask))
87 perror_msg_and_fail("sigprocmask");
88 if (uset.old_mask != uget.old_mask)
89 error_msg_and_fail("sigprocmask returned %#lx"
90 " instead of %#lx",
91 uget.old_mask, uset.old_mask);
92 }
93
94 rc = k_sgetmask();
95 if (rc == -1L) {
96 printf("sgetmask() = %s\n", sprintrc(rc));
97 } else {
98 printf("sgetmask() = %#lx (mask [USR1 USR2])\n", rc);
99 if (uget.old_mask != (unsigned long) rc)
100 error_msg_and_fail("sigprocmask returned %#lx",
101 uget.old_mask);
102
103 if (sizeof(long) > 4) {
104 sigaddset(&uset.libc_mask, 32 + 27);
105 if (sigprocmask(SIG_SETMASK, &uset.libc_mask, NULL))
106 perror_msg_and_fail("sigprocmask");
107 rc = k_sgetmask();
108 printf("sgetmask() = %#lx"
109 " (mask [USR1 USR2 RT_27])\n", rc);
110 if (uset.old_mask != (unsigned long) rc)
111 error_msg_and_fail("sigprocmask set %#lx",
112 uset.old_mask);
113 }
114 }
115
116 puts("+++ exited with 0 +++");
117 return 0;
118 }
119
120 #else
121
122 SKIP_MAIN_UNDEFINED("__NR_sgetmask && __NR_ssetmask")
123
124 #endif
125