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 */ 140