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

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  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 #define SA_RESTORER     0x04000000
 69 
 70 #define MINSIGSTKSZ     2048
 71 #define SIGSTKSZ        8192
 72 
 73 #include <asm-generic/signal-defs.h>
 74 
 75 #ifndef __KERNEL__
 76 
 77 /*
 78  * There are two system calls in regard to sigaction, sys_rt_sigaction
 79  * and sys_sigaction. Internally the kernel uses the struct old_sigaction
 80  * for the older sys_sigaction system call, and the kernel version of the
 81  * struct sigaction for the newer sys_rt_sigaction.
 82  *
 83  * The uapi definition for struct sigaction has made a strange distinction
 84  * between 31-bit and 64-bit in the past. For 64-bit the uapi structure
 85  * looks like the kernel struct sigaction, but for 31-bit it used to
 86  * look like the kernel struct old_sigaction. That practically made the
 87  * structure unusable for either system call. To get around this problem
 88  * the glibc always had its own definitions for the sigaction structures.
 89  *
 90  * The current struct sigaction uapi definition below is suitable for the
 91  * sys_rt_sigaction system call only.
 92  */
 93 struct sigaction {
 94         union {
 95           __sighandler_t _sa_handler;
 96           void (*_sa_sigaction)(int, struct siginfo *, void *);
 97         } _u;
 98         unsigned long sa_flags;
 99         void (*sa_restorer)(void);
100         sigset_t sa_mask;
101 };
102 
103 #define sa_handler      _u._sa_handler
104 #define sa_sigaction    _u._sa_sigaction
105 
106 #endif /* __KERNEL__ */
107 
108 typedef struct sigaltstack {
109         void __user *ss_sp;
110         int ss_flags;
111         size_t ss_size;
112 } stack_t;
113 
114 
115 #endif /* _UAPI_ASMS390_SIGNAL_H */
116 

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