1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * This file is subject to the terms and conditions of the GNU General Public 4 * License. See the file "COPYING" in the main directory of this archive 5 * for more details. 6 * 7 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle 8 * Copyright (C) 1999 Silicon Graphics, Inc. 9 */ 10 #ifndef _UAPI_ASM_SIGNAL_H 11 #define _UAPI_ASM_SIGNAL_H 12 13 #include <linux/types.h> 14 15 #define _NSIG 128 16 #define _NSIG_BPW (sizeof(unsigned long) * 8) 17 #define _NSIG_WORDS (_NSIG / _NSIG_BPW) 18 19 typedef struct { 20 unsigned long sig[_NSIG_WORDS]; 21 } sigset_t; 22 23 typedef unsigned long old_sigset_t; /* at least 32 bits */ 24 25 #define SIGHUP 1 /* Hangup (POSIX). */ 26 #define SIGINT 2 /* Interrupt (ANSI). */ 27 #define SIGQUIT 3 /* Quit (POSIX). */ 28 #define SIGILL 4 /* Illegal instruction (ANSI). */ 29 #define SIGTRAP 5 /* Trace trap (POSIX). */ 30 #define SIGIOT 6 /* IOT trap (4.2 BSD). */ 31 #define SIGABRT SIGIOT /* Abort (ANSI). */ 32 #define SIGEMT 7 33 #define SIGFPE 8 /* Floating-point exception (ANSI). */ 34 #define SIGKILL 9 /* Kill, unblockable (POSIX). */ 35 #define SIGBUS 10 /* BUS error (4.2 BSD). */ 36 #define SIGSEGV 11 /* Segmentation violation (ANSI). */ 37 #define SIGSYS 12 38 #define SIGPIPE 13 /* Broken pipe (POSIX). */ 39 #define SIGALRM 14 /* Alarm clock (POSIX). */ 40 #define SIGTERM 15 /* Termination (ANSI). */ 41 #define SIGUSR1 16 /* User-defined signal 1 (POSIX). */ 42 #define SIGUSR2 17 /* User-defined signal 2 (POSIX). */ 43 #define SIGCHLD 18 /* Child status has changed (POSIX). */ 44 #define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */ 45 #define SIGPWR 19 /* Power failure restart (System V). */ 46 #define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */ 47 #define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */ 48 #define SIGIO 22 /* I/O now possible (4.2 BSD). */ 49 #define SIGPOLL SIGIO /* Pollable event occurred (System V). */ 50 #define SIGSTOP 23 /* Stop, unblockable (POSIX). */ 51 #define SIGTSTP 24 /* Keyboard stop (POSIX). */ 52 #define SIGCONT 25 /* Continue (POSIX). */ 53 #define SIGTTIN 26 /* Background read from tty (POSIX). */ 54 #define SIGTTOU 27 /* Background write to tty (POSIX). */ 55 #define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */ 56 #define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */ 57 #define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */ 58 #define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */ 59 60 /* These should not be considered constants from userland. */ 61 #define SIGRTMIN 32 62 #define SIGRTMAX _NSIG 63 64 /* 65 * SA_FLAGS values: 66 * 67 * SA_ONSTACK indicates that a registered stack_t will be used. 68 * SA_RESTART flag to get restarting signals (which were the default long ago) 69 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 70 * SA_RESETHAND clears the handler when the signal is delivered. 71 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 72 * SA_NODEFER prevents the current signal from being masked in the handler. 73 * 74 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 75 * Unix names RESETHAND and NODEFER respectively. 76 * 77 * SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever 78 * supported its use and no libc was using it, so the entire sa-restorer 79 * functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48 80 * retaining only the SA_RESTORER definition as a reminder to avoid 81 * accidental reuse of the mask bit. 82 */ 83 #define SA_ONSTACK 0x08000000 84 #define SA_RESETHAND 0x80000000 85 #define SA_RESTART 0x10000000 86 #define SA_SIGINFO 0x00000008 87 #define SA_NODEFER 0x40000000 88 #define SA_NOCLDWAIT 0x00010000 89 #define SA_NOCLDSTOP 0x00000001 90 91 #define SA_NOMASK SA_NODEFER 92 #define SA_ONESHOT SA_RESETHAND 93 94 #define MINSIGSTKSZ 2048 95 #define SIGSTKSZ 8192 96 97 98 #define SIG_BLOCK 1 /* for blocking signals */ 99 #define SIG_UNBLOCK 2 /* for unblocking signals */ 100 #define SIG_SETMASK 3 /* for setting the signal mask */ 101 102 #include <asm-generic/signal-defs.h> 103 104 #ifndef __KERNEL__ 105 struct sigaction { 106 unsigned int sa_flags; 107 __sighandler_t sa_handler; 108 sigset_t sa_mask; 109 }; 110 #endif 111 112 /* IRIX compatible stack_t */ 113 typedef struct sigaltstack { 114 void __user *ss_sp; 115 size_t ss_size; 116 int ss_flags; 117 } stack_t; 118 119 120 #endif /* _UAPI_ASM_SIGNAL_H */ 121