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 _ASMS390_SIGNAL_H
  9#define _ASMS390_SIGNAL_H
 10
 11#include <linux/types.h>
 12#include <linux/time.h>
 13
 14/* Avoid too many header ordering problems.  */
 15struct siginfo;
 16struct pt_regs;
 17
 18/* Here we must cater to libcs that poke about in kernel headers.  */
 19
 20#define NSIG            32
 21typedef unsigned long sigset_t;
 22
 23
 24#define SIGHUP           1
 25#define SIGINT           2
 26#define SIGQUIT          3
 27#define SIGILL           4
 28#define SIGTRAP          5
 29#define SIGABRT          6
 30#define SIGIOT           6
 31#define SIGBUS           7
 32#define SIGFPE           8
 33#define SIGKILL          9
 34#define SIGUSR1         10
 35#define SIGSEGV         11
 36#define SIGUSR2         12
 37#define SIGPIPE         13
 38#define SIGALRM         14
 39#define SIGTERM         15
 40#define SIGSTKFLT       16
 41#define SIGCHLD         17
 42#define SIGCONT         18
 43#define SIGSTOP         19
 44#define SIGTSTP         20
 45#define SIGTTIN         21
 46#define SIGTTOU         22
 47#define SIGURG          23
 48#define SIGXCPU         24
 49#define SIGXFSZ         25
 50#define SIGVTALRM       26
 51#define SIGPROF         27
 52#define SIGWINCH        28
 53#define SIGIO           29
 54#define SIGPOLL         SIGIO
 55/*
 56#define SIGLOST         29
 57*/
 58#define SIGPWR          30
 59#define SIGSYS		31
 60#define SIGUNUSED       31
 61
 62/* These should not be considered constants from userland.  */
 63#define SIGRTMIN        32
 64#define SIGRTMAX        _NSIG
 65
 66#define SA_RESTORER     0x04000000
 67
 68#define MINSIGSTKSZ     2048
 69#define SIGSTKSZ        8192
 70
 71#include <asm-generic/signal-defs.h>
 72
 73
 74/*
 75 * There are two system calls in regard to sigaction, sys_rt_sigaction
 76 * and sys_sigaction. Internally the kernel uses the struct old_sigaction
 77 * for the older sys_sigaction system call, and the kernel version of the
 78 * struct sigaction for the newer sys_rt_sigaction.
 79 *
 80 * The uapi definition for struct sigaction has made a strange distinction
 81 * between 31-bit and 64-bit in the past. For 64-bit the uapi structure
 82 * looks like the kernel struct sigaction, but for 31-bit it used to
 83 * look like the kernel struct old_sigaction. That practically made the
 84 * structure unusable for either system call. To get around this problem
 85 * the glibc always had its own definitions for the sigaction structures.
 86 *
 87 * The current struct sigaction uapi definition below is suitable for the
 88 * sys_rt_sigaction system call only.
 89 */
 90struct sigaction {
 91        union {
 92          __sighandler_t _sa_handler;
 93          void (*_sa_sigaction)(int, struct siginfo *, void *);
 94        } _u;
 95        unsigned long sa_flags;
 96        void (*sa_restorer)(void);
 97	sigset_t sa_mask;
 98};
 99
100#define sa_handler      _u._sa_handler
101#define sa_sigaction    _u._sa_sigaction
102
103
104typedef struct sigaltstack {
105        void *ss_sp;
106        int ss_flags;
107	__kernel_size_t ss_size;
108} stack_t;
109
110
111#endif /* _ASMS390_SIGNAL_H */