include/asm-i386/siginfo.h

   1 #ifndef _I386_SIGINFO_H
   2 #define _I386_SIGINFO_H
   3
   4 #include <linux/types.h>
   5
   6 /* XXX: This structure was copied from the Alpha; is there an iBCS version?  */
   7
   8 typedef union sigval {
   9         int sival_int;
  10         void *sival_ptr;
  11 } sigval_t;
  12
  13 #define SI_MAX_SIZE     128
  14 #define SI_PAD_SIZE     ((SI_MAX_SIZE/sizeof(int)) - 3)
  15
  16 typedef struct siginfo {
  17         int si_signo;
  18         int si_errno;
  19         int si_code;
  20
  21         union {
  22                 int _pad[SI_PAD_SIZE];
  23
  24                 /* kill() */
  25                 struct {
  26                         pid_t _pid;             /* sender's pid */
  27                         uid_t _uid;             /* sender's uid */
  28                 } _kill;
  29
  30                 /* POSIX.1b timers */
  31                 struct {
  32                         unsigned int _timer1;
  33                         unsigned int _timer2;
  34                 } _timer;
  35
  36                 /* POSIX.1b signals */
  37                 struct {
  38                         pid_t _pid;             /* sender's pid */
  39                         uid_t _uid;             /* sender's uid */
  40                         sigval_t _sigval;
  41                 } _rt;
  42
  43                 /* SIGCHLD */
  44                 struct {
  45                         pid_t _pid;             /* which child */
  46                         uid_t _uid;             /* sender's uid */
  47                         int _status;            /* exit code */
  48                         clock_t _utime;
  49                         clock_t _stime;
  50                 } _sigchld;
  51
  52                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  53                 struct {
  54                         void *_addr; /* faulting insn/memory ref. */
  55                 } _sigfault;
  56
  57                 /* SIGPOLL */
  58                 struct {
  59                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
  60                         int _fd;
  61                 } _sigpoll;
  62         } _sifields;
  63 } siginfo_t;
  64
  65 /*
  66  * How these fields are to be accessed.
  67  */
  68 #define si_pid          _sifields._kill._pid
  69 #define si_uid          _sifields._kill._uid
  70 #define si_status       _sifields._sigchld._status
  71 #define si_utime        _sifields._sigchld._utime
  72 #define si_stime        _sifields._sigchld._stime
  73 #define si_value        _sifields._rt._sigval
  74 #define si_int          _sifields._rt._sigval.sival_int
  75 #define si_ptr          _sifields._rt._sigval.sival_ptr
  76 #define si_addr         _sifields._sigfault._addr
  77 #define si_band         _sifields._sigpoll._band
  78 #define si_fd           _sifields._sigpoll._fd
  79
  80 #ifdef __KERNEL__
  81 #define __SI_MASK       0xffff0000
  82 #define __SI_KILL       (0 << 16)
  83 #define __SI_TIMER      (1 << 16)
  84 #define __SI_POLL       (2 << 16)
  85 #define __SI_FAULT      (3 << 16)
  86 #define __SI_CHLD       (4 << 16)
  87 #define __SI_RT         (5 << 16)
  88 #define __SI_CODE(T,N)  ((T) << 16 | ((N) & 0xffff))
  89 #else
  90 #define __SI_KILL       0
  91 #define __SI_TIMER      0
  92 #define __SI_POLL       0
  93 #define __SI_FAULT      0
  94 #define __SI_CHLD       0
  95 #define __SI_RT         0
  96 #define __SI_CODE(T,N)  (N)
  97 #endif
  98
  99 /*
 100  * si_code values
 101  * Digital reserves positive values for kernel-generated signals.
 102  */
 103 #define SI_USER         0               /* sent by kill, sigsend, raise */
 104 #define SI_KERNEL       0x80            /* sent by the kernel from somewhere */
 105 #define SI_QUEUE        -1              /* sent by sigqueue */
 106 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
 107 #define SI_MESGQ        -3              /* sent by real time mesq state change */
 108 #define SI_ASYNCIO      -4              /* sent by AIO completion */
 109 #define SI_SIGIO        -5              /* sent by queued SIGIO */
 110
 111 #define SI_FROMUSER(siptr)      ((siptr)->si_code <= 0)
 112 #define SI_FROMKERNEL(siptr)    ((siptr)->si_code > 0)
 113
 114 /*
 115  * SIGILL si_codes
 116  */
 117 #define ILL_ILLOPC      (__SI_FAULT|1)  /* illegal opcode */
 118 #define ILL_ILLOPN      (__SI_FAULT|2)  /* illegal operand */
 119 #define ILL_ILLADR      (__SI_FAULT|3)  /* illegal addressing mode */
 120 #define ILL_ILLTRP      (__SI_FAULT|4)  /* illegal trap */
 121 #define ILL_PRVOPC      (__SI_FAULT|5)  /* privileged opcode */
 122 #define ILL_PRVREG      (__SI_FAULT|6)  /* privileged register */
 123 #define ILL_COPROC      (__SI_FAULT|7)  /* coprocessor error */
 124 #define ILL_BADSTK      (__SI_FAULT|8)  /* internal stack error */
 125 #define NSIGILL         8
 126
 127 /*
 128  * SIGFPE si_codes
 129  */
 130 #define FPE_INTDIV      (__SI_FAULT|1)  /* integer divide by zero */
 131 #define FPE_INTOVF      (__SI_FAULT|2)  /* integer overflow */
 132 #define FPE_FLTDIV      (__SI_FAULT|3)  /* floating point divide by zero */
 133 #define FPE_FLTOVF      (__SI_FAULT|4)  /* floating point overflow */
 134 #define FPE_FLTUND      (__SI_FAULT|5)  /* floating point underflow */
 135 #define FPE_FLTRES      (__SI_FAULT|6)  /* floating point inexact result */
 136 #define FPE_FLTINV      (__SI_FAULT|7)  /* floating point invalid operation */
 137 #define FPE_FLTSUB      (__SI_FAULT|8)  /* subscript out of range */
 138 #define NSIGFPE         8
 139
 140 /*
 141  * SIGSEGV si_codes
 142  */
 143 #define SEGV_MAPERR     (__SI_FAULT|1)  /* address not mapped to object */
 144 #define SEGV_ACCERR     (__SI_FAULT|2)  /* invalid permissions for mapped object */
 145 #define NSIGSEGV        2
 146
 147 /*
 148  * SIGBUS si_codes
 149  */
 150 #define BUS_ADRALN      (__SI_FAULT|1)  /* invalid address alignment */
 151 #define BUS_ADRERR      (__SI_FAULT|2)  /* non-existant physical address */
 152 #define BUS_OBJERR      (__SI_FAULT|3)  /* object specific hardware error */
 153 #define NSIGBUS         3
 154
 155 /*
 156  * SIGTRAP si_codes
 157  */
 158 #define TRAP_BRKPT      (__SI_FAULT|1)  /* process breakpoint */
 159 #define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */
 160 #define NSIGTRAP        2
 161
 162 /*
 163  * SIGCHLD si_codes
 164  */
 165 #define CLD_EXITED      (__SI_CHLD|1)   /* child has exited */
 166 #define CLD_KILLED      (__SI_CHLD|2)   /* child was killed */
 167 #define CLD_DUMPED      (__SI_CHLD|3)   /* child terminated abnormally */
 168 #define CLD_TRAPPED     (__SI_CHLD|4)   /* traced child has trapped */
 169 #define CLD_STOPPED     (__SI_CHLD|5)   /* child has stopped */
 170 #define CLD_CONTINUED   (__SI_CHLD|6)   /* stopped child has continued */
 171 #define NSIGCHLD        6
 172
 173 /*
 174  * SIGPOLL si_codes
 175  */
 176 #define POLL_IN         (__SI_POLL|1)   /* data input available */
 177 #define POLL_OUT        (__SI_POLL|2)   /* output buffers available */
 178 #define POLL_MSG        (__SI_POLL|3)   /* input message available */
 179 #define POLL_ERR        (__SI_POLL|4)   /* i/o error */
 180 #define POLL_PRI        (__SI_POLL|5)   /* high priority input available */
 181 #define POLL_HUP        (__SI_POLL|6)   /* device disconnected */
 182 #define NSIGPOLL        6
 183
 184 /*
 185  * sigevent definitions
 186  *
 187  * It seems likely that SIGEV_THREAD will have to be handled from
 188  * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
 189  * thread manager then catches and does the appropriate nonsense.
 190  * However, everything is written out here so as to not get lost.
 191  */
 192 #define SIGEV_SIGNAL    0       /* notify via signal */
 193 #define SIGEV_NONE      1       /* other notification: meaningless */
 194 #define SIGEV_THREAD    2       /* deliver via thread creation */
 195
 196 #define SIGEV_MAX_SIZE  64
 197 #define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 198
 199 typedef struct sigevent {
 200         sigval_t sigev_value;
 201         int sigev_signo;
 202         int sigev_notify;
 203         union {
 204                 int _pad[SIGEV_PAD_SIZE];
 205
 206                 struct {
 207                         void (*_function)(sigval_t);
 208                         void *_attribute;       /* really pthread_attr_t */
 209                 } _sigev_thread;
 210         } _sigev_un;
 211 } sigevent_t;
 212
 213 #define sigev_notify_function   _sigev_un._sigev_thread._function
 214 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 215
 216 #ifdef __KERNEL__
 217 #include <linux/string.h>
 218
 219 extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
 220 {
 221         if (from->si_code < 0)
 222                 memcpy(to, from, sizeof(siginfo_t));
 223         else
 224                 /* _sigchld is currently the largest know union member */
 225                 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
 226 }
 227
 228 extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
 229
 230 #endif /* __KERNEL__ */
 231
 232 #endif