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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _ASM_GENERIC_SIGINFO_H |
| 2 | #define _ASM_GENERIC_SIGINFO_H |
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| 3 | |||
| 4 | #include <linux/compiler.h> |
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| 5 | #include <linux/types.h> |
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| 6 | |||
| 7 | typedef union sigval { |
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| 8 | int sival_int; |
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| 9 | void *sival_ptr; |
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| 10 | } sigval_t; |
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| 11 | |||
| 12 | /* |
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| 13 | * This is the size (including padding) of the part of the |
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| 14 | * struct siginfo that is before the union. |
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| 15 | */ |
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| 16 | #ifndef __ARCH_SI_PREAMBLE_SIZE |
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| 17 | #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int)) |
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| 18 | #endif |
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| 19 | |||
| 20 | #define SI_MAX_SIZE 128 |
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| 21 | #ifndef SI_PAD_SIZE |
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| 22 | #define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) |
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| 23 | #endif |
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| 24 | |||
| 25 | #ifndef __ARCH_SI_UID_T |
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| 26 | #define __ARCH_SI_UID_T uid_t |
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| 27 | #endif |
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| 28 | |||
| 29 | #ifndef __ARCH_SI_BAND_T |
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| 30 | #define __ARCH_SI_BAND_T int |
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| 31 | #endif |
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| 32 | |||
| 33 | #ifndef HAVE_ARCH_SIGINFO_T |
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| 34 | |||
| 35 | typedef struct siginfo { |
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| 36 | int si_signo; |
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| 37 | int si_errno; |
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| 38 | int si_code; |
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| 39 | |||
| 40 | union { |
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| 41 | int _pad[SI_PAD_SIZE]; |
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| 42 | |||
| 43 | /* kill() */ |
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| 44 | struct { |
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| 45 | pid_t _pid; /* sender's pid */ |
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| 46 | __ARCH_SI_UID_T _uid; /* sender's uid */ |
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| 47 | } _kill; |
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| 48 | |||
| 49 | /* POSIX.1b timers */ |
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| 50 | struct { |
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| 51 | timer_t _tid; /* timer id */ |
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| 52 | int _overrun; /* overrun count */ |
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| 53 | char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)]; |
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| 54 | sigval_t _sigval; /* same as below */ |
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| 55 | int _sys_private; /* not to be passed to user */ |
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| 56 | } _timer; |
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| 57 | |||
| 58 | /* POSIX.1b signals */ |
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| 59 | struct { |
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| 60 | pid_t _pid; /* sender's pid */ |
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| 61 | __ARCH_SI_UID_T _uid; /* sender's uid */ |
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| 62 | sigval_t _sigval; |
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| 63 | } _rt; |
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| 64 | |||
| 65 | /* SIGCHLD */ |
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| 66 | struct { |
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| 67 | pid_t _pid; /* which child */ |
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| 68 | __ARCH_SI_UID_T _uid; /* sender's uid */ |
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| 69 | int _status; /* exit code */ |
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| 70 | clock_t _utime; |
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| 71 | clock_t _stime; |
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| 72 | } _sigchld; |
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| 73 | |||
| 74 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ |
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| 75 | struct { |
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| 76 | void *_addr; /* faulting insn/memory ref. */ |
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| 77 | #ifdef __ARCH_SI_TRAPNO |
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| 78 | int _trapno; /* TRAP # which caused the signal */ |
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| 79 | #endif |
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| 80 | } _sigfault; |
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| 81 | |||
| 82 | /* SIGPOLL */ |
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| 83 | struct { |
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| 84 | __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ |
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| 85 | int _fd; |
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| 86 | } _sigpoll; |
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| 87 | } _sifields; |
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| 88 | } siginfo_t; |
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| 89 | |||
| 90 | #endif |
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| 91 | |||
| 92 | /* |
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| 93 | * How these fields are to be accessed. |
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| 94 | */ |
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| 95 | #define si_pid _sifields._kill._pid |
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| 96 | #define si_uid _sifields._kill._uid |
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| 97 | #define si_tid _sifields._timer._tid |
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| 98 | #define si_overrun _sifields._timer._overrun |
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| 99 | #define si_sys_private _sifields._timer._sys_private |
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| 100 | #define si_status _sifields._sigchld._status |
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| 101 | #define si_utime _sifields._sigchld._utime |
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| 102 | #define si_stime _sifields._sigchld._stime |
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| 103 | #define si_value _sifields._rt._sigval |
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| 104 | #define si_int _sifields._rt._sigval.sival_int |
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| 105 | #define si_ptr _sifields._rt._sigval.sival_ptr |
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| 106 | #define si_addr _sifields._sigfault._addr |
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| 107 | #ifdef __ARCH_SI_TRAPNO |
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| 108 | #define si_trapno _sifields._sigfault._trapno |
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| 109 | #endif |
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| 110 | #define si_band _sifields._sigpoll._band |
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| 111 | #define si_fd _sifields._sigpoll._fd |
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| 112 | |||
| 113 | #ifdef __KERNEL__ |
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| 114 | #define __SI_MASK 0xffff0000u |
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| 115 | #define __SI_KILL (0 << 16) |
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| 116 | #define __SI_TIMER (1 << 16) |
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| 117 | #define __SI_POLL (2 << 16) |
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| 118 | #define __SI_FAULT (3 << 16) |
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| 119 | #define __SI_CHLD (4 << 16) |
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| 120 | #define __SI_RT (5 << 16) |
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| 121 | #define __SI_CODE(T,N) ((T) | ((N) & 0xffff)) |
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| 122 | #else |
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| 123 | #define __SI_KILL 0 |
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| 124 | #define __SI_TIMER 0 |
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| 125 | #define __SI_POLL 0 |
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| 126 | #define __SI_FAULT 0 |
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| 127 | #define __SI_CHLD 0 |
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| 128 | #define __SI_RT 0 |
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| 129 | #define __SI_CODE(T,N) (N) |
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| 130 | #endif |
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| 131 | |||
| 132 | /* |
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| 133 | * si_code values |
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| 134 | * Digital reserves positive values for kernel-generated signals. |
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| 135 | */ |
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| 136 | #define SI_USER 0 /* sent by kill, sigsend, raise */ |
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| 137 | #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ |
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| 138 | #define SI_QUEUE -1 /* sent by sigqueue */ |
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| 139 | #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ |
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| 140 | #define SI_MESGQ -3 /* sent by real time mesq state change */ |
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| 141 | #define SI_ASYNCIO -4 /* sent by AIO completion */ |
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| 142 | #define SI_SIGIO -5 /* sent by queued SIGIO */ |
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| 143 | #define SI_TKILL -6 /* sent by tkill system call */ |
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| 144 | #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ |
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| 145 | |||
| 146 | #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) |
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| 147 | #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) |
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| 148 | |||
| 149 | #ifndef HAVE_ARCH_SI_CODES |
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| 150 | /* |
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| 151 | * SIGILL si_codes |
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| 152 | */ |
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| 153 | #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ |
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| 154 | #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ |
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| 155 | #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ |
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| 156 | #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ |
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| 157 | #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ |
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| 158 | #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ |
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| 159 | #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ |
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| 160 | #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ |
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| 161 | #define NSIGILL 8 |
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| 162 | |||
| 163 | /* |
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| 164 | * SIGFPE si_codes |
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| 165 | */ |
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| 166 | #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ |
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| 167 | #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ |
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| 168 | #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ |
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| 169 | #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ |
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| 170 | #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ |
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| 171 | #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ |
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| 172 | #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ |
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| 173 | #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ |
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| 174 | #define NSIGFPE 8 |
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| 175 | |||
| 176 | /* |
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| 177 | * SIGSEGV si_codes |
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| 178 | */ |
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| 179 | #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ |
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| 180 | #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ |
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| 181 | #define NSIGSEGV 2 |
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| 182 | |||
| 183 | /* |
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| 184 | * SIGBUS si_codes |
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| 185 | */ |
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| 186 | #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ |
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| 187 | #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */ |
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| 188 | #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ |
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| 189 | #define NSIGBUS 3 |
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| 190 | |||
| 191 | /* |
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| 192 | * SIGTRAP si_codes |
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| 193 | */ |
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| 194 | #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ |
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| 195 | #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ |
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| 196 | #define NSIGTRAP 2 |
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| 197 | |||
| 198 | /* |
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| 199 | * SIGCHLD si_codes |
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| 200 | */ |
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| 201 | #define CLD_EXITED (__SI_CHLD|1) /* child has exited */ |
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| 202 | #define CLD_KILLED (__SI_CHLD|2) /* child was killed */ |
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| 203 | #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ |
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| 204 | #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ |
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| 205 | #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ |
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| 206 | #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ |
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| 207 | #define NSIGCHLD 6 |
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| 208 | |||
| 209 | /* |
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| 210 | * SIGPOLL si_codes |
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| 211 | */ |
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| 212 | #define POLL_IN (__SI_POLL|1) /* data input available */ |
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| 213 | #define POLL_OUT (__SI_POLL|2) /* output buffers available */ |
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| 214 | #define POLL_MSG (__SI_POLL|3) /* input message available */ |
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| 215 | #define POLL_ERR (__SI_POLL|4) /* i/o error */ |
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| 216 | #define POLL_PRI (__SI_POLL|5) /* high priority input available */ |
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| 217 | #define POLL_HUP (__SI_POLL|6) /* device disconnected */ |
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| 218 | #define NSIGPOLL 6 |
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| 219 | |||
| 220 | #endif |
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| 221 | |||
| 222 | /* |
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| 223 | * sigevent definitions |
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| 224 | * |
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| 225 | * It seems likely that SIGEV_THREAD will have to be handled from |
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| 226 | * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the |
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| 227 | * thread manager then catches and does the appropriate nonsense. |
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| 228 | * However, everything is written out here so as to not get lost. |
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| 229 | */ |
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| 230 | #define SIGEV_SIGNAL 0 /* notify via signal */ |
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| 231 | #define SIGEV_NONE 1 /* other notification: meaningless */ |
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| 232 | #define SIGEV_THREAD 2 /* deliver via thread creation */ |
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| 233 | #define SIGEV_THREAD_ID 4 /* deliver to thread */ |
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| 234 | |||
| 235 | #define SIGEV_MAX_SIZE 64 |
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| 236 | #ifndef SIGEV_PAD_SIZE |
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| 237 | #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) |
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| 238 | #endif |
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| 239 | |||
| 240 | #ifndef HAVE_ARCH_SIGEVENT_T |
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| 241 | |||
| 242 | typedef struct sigevent { |
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| 243 | sigval_t sigev_value; |
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| 244 | int sigev_signo; |
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| 245 | int sigev_notify; |
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| 246 | union { |
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| 247 | int _pad[SIGEV_PAD_SIZE]; |
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| 248 | int _tid; |
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| 249 | |||
| 250 | struct { |
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| 251 | void (*_function)(sigval_t); |
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| 252 | void *_attribute; /* really pthread_attr_t */ |
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| 253 | } _sigev_thread; |
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| 254 | } _sigev_un; |
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| 255 | } sigevent_t; |
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| 256 | |||
| 257 | #endif |
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| 258 | |||
| 259 | #define sigev_notify_function _sigev_un._sigev_thread._function |
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| 260 | #define sigev_notify_attributes _sigev_un._sigev_thread._attribute |
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| 261 | #define sigev_notify_thread_id _sigev_un._tid |
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| 262 | |||
| 263 | #ifdef __KERNEL__ |
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| 264 | |||
| 265 | struct siginfo; |
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| 266 | void do_schedule_next_timer(struct siginfo *info); |
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| 267 | |||
| 268 | #ifndef HAVE_ARCH_COPY_SIGINFO |
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| 269 | |||
| 270 | #include <linux/string.h> |
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| 271 | |||
| 272 | static inline void copy_siginfo(struct siginfo *to, struct siginfo *from) |
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| 273 | { |
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| 274 | if (from->si_code < 0) |
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| 275 | memcpy(to, from, sizeof(*to)); |
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| 276 | else |
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| 277 | /* _sigchld is currently the largest know union member */ |
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| 278 | memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld)); |
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| 279 | } |
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| 280 | |||
| 281 | #endif |
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| 282 | |||
| 283 | extern int copy_siginfo_to_user(struct siginfo __user *to, struct siginfo *from); |
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| 284 | |||
| 285 | #endif /* __KERNEL__ */ |
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| 286 | |||
| 287 | #endif |