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

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  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 

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