1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * S390 version
4 *
5 * Derived from "include/asm-i386/signal.h"
6 */
7
8 #ifndef _UAPI_ASMS390_SIGNAL_H
9 #define _UAPI_ASMS390_SIGNAL_H
10
11 #include <linux/types.h>
12 #include <linux/time.h>
13
14 /* Avoid too many header ordering problems. */
15 struct siginfo;
16 struct pt_regs;
17
18 #ifndef __KERNEL__
19 /* Here we must cater to libcs that poke about in kernel headers. */
20
21 #define NSIG 32
22 typedef unsigned long sigset_t;
23
24 #endif /* __KERNEL__ */
25
26 #define SIGHUP 1
27 #define SIGINT 2
28 #define SIGQUIT 3
29 #define SIGILL 4
30 #define SIGTRAP 5
31 #define SIGABRT 6
32 #define SIGIOT 6
33 #define SIGBUS 7
34 #define SIGFPE 8
35 #define SIGKILL 9
36 #define SIGUSR1 10
37 #define SIGSEGV 11
38 #define SIGUSR2 12
39 #define SIGPIPE 13
40 #define SIGALRM 14
41 #define SIGTERM 15
42 #define SIGSTKFLT 16
43 #define SIGCHLD 17
44 #define SIGCONT 18
45 #define SIGSTOP 19
46 #define SIGTSTP 20
47 #define SIGTTIN 21
48 #define SIGTTOU 22
49 #define SIGURG 23
50 #define SIGXCPU 24
51 #define SIGXFSZ 25
52 #define SIGVTALRM 26
53 #define SIGPROF 27
54 #define SIGWINCH 28
55 #define SIGIO 29
56 #define SIGPOLL SIGIO
57 /*
58 #define SIGLOST 29
59 */
60 #define SIGPWR 30
61 #define SIGSYS 31
62 #define SIGUNUSED 31
63
64 /* These should not be considered constants from userland. */
65 #define SIGRTMIN 32
66 #define SIGRTMAX _NSIG
67
68 /*
69 * SA_FLAGS values:
70 *
71 * SA_ONSTACK indicates that a registered stack_t will be used.
72 * SA_RESTART flag to get restarting signals (which were the default long ago)
73 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
74 * SA_RESETHAND clears the handler when the signal is delivered.
75 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
76 * SA_NODEFER prevents the current signal from being masked in the handler.
77 *
78 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
79 * Unix names RESETHAND and NODEFER respectively.
80 */
81 #define SA_NOCLDSTOP 0x00000001
82 #define SA_NOCLDWAIT 0x00000002
83 #define SA_SIGINFO 0x00000004
84 #define SA_ONSTACK 0x08000000
85 #define SA_RESTART 0x10000000
86 #define SA_NODEFER 0x40000000
87 #define SA_RESETHAND 0x80000000
88
89 #define SA_NOMASK SA_NODEFER
90 #define SA_ONESHOT SA_RESETHAND
91
92 #define SA_RESTORER 0x04000000
93
94 #define MINSIGSTKSZ 2048
95 #define SIGSTKSZ 8192
96
97 #include <asm-generic/signal-defs.h>
98
99 #ifndef __KERNEL__
100
101 /*
102 * There are two system calls in regard to sigaction, sys_rt_sigaction
103 * and sys_sigaction. Internally the kernel uses the struct old_sigaction
104 * for the older sys_sigaction system call, and the kernel version of the
105 * struct sigaction for the newer sys_rt_sigaction.
106 *
107 * The uapi definition for struct sigaction has made a strange distinction
108 * between 31-bit and 64-bit in the past. For 64-bit the uapi structure
109 * looks like the kernel struct sigaction, but for 31-bit it used to
110 * look like the kernel struct old_sigaction. That practically made the
111 * structure unusable for either system call. To get around this problem
112 * the glibc always had its own definitions for the sigaction structures.
113 *
114 * The current struct sigaction uapi definition below is suitable for the
115 * sys_rt_sigaction system call only.
116 */
117 struct sigaction {
118 union {
119 __sighandler_t _sa_handler;
120 void (*_sa_sigaction)(int, struct siginfo *, void *);
121 } _u;
122 unsigned long sa_flags;
123 void (*sa_restorer)(void);
124 sigset_t sa_mask;
125 };
126
127 #define sa_handler _u._sa_handler
128 #define sa_sigaction _u._sa_sigaction
129
130 #endif /* __KERNEL__ */
131
132 typedef struct sigaltstack {
133 void __user *ss_sp;
134 int ss_flags;
135 size_t ss_size;
136 } stack_t;
137
138
139 #endif /* _UAPI_ASMS390_SIGNAL_H */