arch/s390/include/uapi/asm/signal.h

   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 */