include/uapi/asm-generic/siginfo.h

   1 #ifndef _UAPI_ASM_GENERIC_SIGINFO_H
   2 #define _UAPI_ASM_GENERIC_SIGINFO_H
   3
   4 #include <linux/compiler.h>
   5 #include <linux/types.h>
   6
   7 typedef union sigval {
   8         int sival_int;
   9         void __user *sival_ptr;
  10 } sigval_t;
  11
  12 /*
  13  * This is the size (including padding) of the part of the
  14  * struct siginfo that is before the union.
  15  */
  16 #ifndef __ARCH_SI_PREAMBLE_SIZE
  17 #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
  18 #endif
  19
  20 #define SI_MAX_SIZE     128
  21 #ifndef SI_PAD_SIZE
  22 #define SI_PAD_SIZE     ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
  23 #endif
  24
  25 #ifndef __ARCH_SI_UID_T
  26 #define __ARCH_SI_UID_T __kernel_uid32_t
  27 #endif
  28
  29 /*
  30  * The default "si_band" type is "long", as specified by POSIX.
  31  * However, some architectures want to override this to "int"
  32  * for historical compatibility reasons, so we allow that.
  33  */
  34 #ifndef __ARCH_SI_BAND_T
  35 #define __ARCH_SI_BAND_T long
  36 #endif
  37
  38 #ifndef __ARCH_SI_CLOCK_T
  39 #define __ARCH_SI_CLOCK_T __kernel_clock_t
  40 #endif
  41
  42 #ifndef __ARCH_SI_ATTRIBUTES
  43 #define __ARCH_SI_ATTRIBUTES
  44 #endif
  45
  46 #ifndef HAVE_ARCH_SIGINFO_T
  47
  48 typedef struct siginfo {
  49         int si_signo;
  50         int si_errno;
  51         int si_code;
  52
  53         union {
  54                 int _pad[SI_PAD_SIZE];
  55
  56                 /* kill() */
  57                 struct {
  58                         __kernel_pid_t _pid;    /* sender's pid */
  59                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  60                 } _kill;
  61
  62                 /* POSIX.1b timers */
  63                 struct {
  64                         __kernel_timer_t _tid;  /* timer id */
  65                         int _overrun;           /* overrun count */
  66                         char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
  67                         sigval_t _sigval;       /* same as below */
  68                         int _sys_private;       /* not to be passed to user */
  69                 } _timer;
  70
  71                 /* POSIX.1b signals */
  72                 struct {
  73                         __kernel_pid_t _pid;    /* sender's pid */
  74                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  75                         sigval_t _sigval;
  76                 } _rt;
  77
  78                 /* SIGCHLD */
  79                 struct {
  80                         __kernel_pid_t _pid;    /* which child */
  81                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  82                         int _status;            /* exit code */
  83                         __ARCH_SI_CLOCK_T _utime;
  84                         __ARCH_SI_CLOCK_T _stime;
  85                 } _sigchld;
  86
  87                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  88                 struct {
  89                         void __user *_addr; /* faulting insn/memory ref. */
  90 #ifdef __ARCH_SI_TRAPNO
  91                         int _trapno;    /* TRAP # which caused the signal */
  92 #endif
  93                         short _addr_lsb; /* LSB of the reported address */
  94                         union {
  95                                 /* used when si_code=SEGV_BNDERR */
  96                                 struct {
  97                                         void __user *_lower;
  98                                         void __user *_upper;
  99                                 } _addr_bnd;
 100                                 /* used when si_code=SEGV_PKUERR */
 101                                 __u32 _pkey;
 102                         };
 103                 } _sigfault;
 104
 105                 /* SIGPOLL */
 106                 struct {
 107                         __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
 108                         int _fd;
 109                 } _sigpoll;
 110
 111                 /* SIGSYS */
 112                 struct {
 113                         void __user *_call_addr; /* calling user insn */
 114                         int _syscall;   /* triggering system call number */
 115                         unsigned int _arch;     /* AUDIT_ARCH_* of syscall */
 116                 } _sigsys;
 117         } _sifields;
 118 } __ARCH_SI_ATTRIBUTES siginfo_t;
 119
 120 /* If the arch shares siginfo, then it has SIGSYS. */
 121 #define __ARCH_SIGSYS
 122 #endif
 123
 124 /*
 125  * How these fields are to be accessed.
 126  */
 127 #define si_pid          _sifields._kill._pid
 128 #define si_uid          _sifields._kill._uid
 129 #define si_tid          _sifields._timer._tid
 130 #define si_overrun      _sifields._timer._overrun
 131 #define si_sys_private  _sifields._timer._sys_private
 132 #define si_status       _sifields._sigchld._status
 133 #define si_utime        _sifields._sigchld._utime
 134 #define si_stime        _sifields._sigchld._stime
 135 #define si_value        _sifields._rt._sigval
 136 #define si_int          _sifields._rt._sigval.sival_int
 137 #define si_ptr          _sifields._rt._sigval.sival_ptr
 138 #define si_addr         _sifields._sigfault._addr
 139 #ifdef __ARCH_SI_TRAPNO
 140 #define si_trapno       _sifields._sigfault._trapno
 141 #endif
 142 #define si_addr_lsb     _sifields._sigfault._addr_lsb
 143 #define si_lower        _sifields._sigfault._addr_bnd._lower
 144 #define si_upper        _sifields._sigfault._addr_bnd._upper
 145 #define si_pkey         _sifields._sigfault._pkey
 146 #define si_band         _sifields._sigpoll._band
 147 #define si_fd           _sifields._sigpoll._fd
 148 #ifdef __ARCH_SIGSYS
 149 #define si_call_addr    _sifields._sigsys._call_addr
 150 #define si_syscall      _sifields._sigsys._syscall
 151 #define si_arch         _sifields._sigsys._arch
 152 #endif
 153
 154 #ifndef __KERNEL__
 155 #define __SI_KILL       0
 156 #define __SI_TIMER      0
 157 #define __SI_POLL       0
 158 #define __SI_FAULT      0
 159 #define __SI_CHLD       0
 160 #define __SI_RT         0
 161 #define __SI_MESGQ      0
 162 #define __SI_SYS        0
 163 #define __SI_CODE(T,N)  (N)
 164 #endif
 165
 166 /*
 167  * si_code values
 168  * Digital reserves positive values for kernel-generated signals.
 169  */
 170 #define SI_USER         0               /* sent by kill, sigsend, raise */
 171 #define SI_KERNEL       0x80            /* sent by the kernel from somewhere */
 172 #define SI_QUEUE        -1              /* sent by sigqueue */
 173 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
 174 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */
 175 #define SI_ASYNCIO      -4              /* sent by AIO completion */
 176 #define SI_SIGIO        -5              /* sent by queued SIGIO */
 177 #define SI_TKILL        -6              /* sent by tkill system call */
 178 #define SI_DETHREAD     -7              /* sent by execve() killing subsidiary threads */
 179
 180 #define SI_FROMUSER(siptr)      ((siptr)->si_code <= 0)
 181 #define SI_FROMKERNEL(siptr)    ((siptr)->si_code > 0)
 182
 183 /*
 184  * SIGILL si_codes
 185  */
 186 #define ILL_ILLOPC      (__SI_FAULT|1)  /* illegal opcode */
 187 #define ILL_ILLOPN      (__SI_FAULT|2)  /* illegal operand */
 188 #define ILL_ILLADR      (__SI_FAULT|3)  /* illegal addressing mode */
 189 #define ILL_ILLTRP      (__SI_FAULT|4)  /* illegal trap */
 190 #define ILL_PRVOPC      (__SI_FAULT|5)  /* privileged opcode */
 191 #define ILL_PRVREG      (__SI_FAULT|6)  /* privileged register */
 192 #define ILL_COPROC      (__SI_FAULT|7)  /* coprocessor error */
 193 #define ILL_BADSTK      (__SI_FAULT|8)  /* internal stack error */
 194 #define NSIGILL         8
 195
 196 /*
 197  * SIGFPE si_codes
 198  */
 199 #define FPE_INTDIV      (__SI_FAULT|1)  /* integer divide by zero */
 200 #define FPE_INTOVF      (__SI_FAULT|2)  /* integer overflow */
 201 #define FPE_FLTDIV      (__SI_FAULT|3)  /* floating point divide by zero */
 202 #define FPE_FLTOVF      (__SI_FAULT|4)  /* floating point overflow */
 203 #define FPE_FLTUND      (__SI_FAULT|5)  /* floating point underflow */
 204 #define FPE_FLTRES      (__SI_FAULT|6)  /* floating point inexact result */
 205 #define FPE_FLTINV      (__SI_FAULT|7)  /* floating point invalid operation */
 206 #define FPE_FLTSUB      (__SI_FAULT|8)  /* subscript out of range */
 207 #define NSIGFPE         8
 208
 209 /*
 210  * SIGSEGV si_codes
 211  */
 212 #define SEGV_MAPERR     (__SI_FAULT|1)  /* address not mapped to object */
 213 #define SEGV_ACCERR     (__SI_FAULT|2)  /* invalid permissions for mapped object */
 214 #define SEGV_BNDERR     (__SI_FAULT|3)  /* failed address bound checks */
 215 #define SEGV_PKUERR     (__SI_FAULT|4)  /* failed protection key checks */
 216 #define NSIGSEGV        4
 217
 218 /*
 219  * SIGBUS si_codes
 220  */
 221 #define BUS_ADRALN      (__SI_FAULT|1)  /* invalid address alignment */
 222 #define BUS_ADRERR      (__SI_FAULT|2)  /* non-existent physical address */
 223 #define BUS_OBJERR      (__SI_FAULT|3)  /* object specific hardware error */
 224 /* hardware memory error consumed on a machine check: action required */
 225 #define BUS_MCEERR_AR   (__SI_FAULT|4)
 226 /* hardware memory error detected in process but not consumed: action optional*/
 227 #define BUS_MCEERR_AO   (__SI_FAULT|5)
 228 #define NSIGBUS         5
 229
 230 /*
 231  * SIGTRAP si_codes
 232  */
 233 #define TRAP_BRKPT      (__SI_FAULT|1)  /* process breakpoint */
 234 #define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */
 235 #define TRAP_BRANCH     (__SI_FAULT|3)  /* process taken branch trap */
 236 #define TRAP_HWBKPT     (__SI_FAULT|4)  /* hardware breakpoint/watchpoint */
 237 #define NSIGTRAP        4
 238
 239 /*
 240  * SIGCHLD si_codes
 241  */
 242 #define CLD_EXITED      (__SI_CHLD|1)   /* child has exited */
 243 #define CLD_KILLED      (__SI_CHLD|2)   /* child was killed */
 244 #define CLD_DUMPED      (__SI_CHLD|3)   /* child terminated abnormally */
 245 #define CLD_TRAPPED     (__SI_CHLD|4)   /* traced child has trapped */
 246 #define CLD_STOPPED     (__SI_CHLD|5)   /* child has stopped */
 247 #define CLD_CONTINUED   (__SI_CHLD|6)   /* stopped child has continued */
 248 #define NSIGCHLD        6
 249
 250 /*
 251  * SIGPOLL si_codes
 252  */
 253 #define POLL_IN         (__SI_POLL|1)   /* data input available */
 254 #define POLL_OUT        (__SI_POLL|2)   /* output buffers available */
 255 #define POLL_MSG        (__SI_POLL|3)   /* input message available */
 256 #define POLL_ERR        (__SI_POLL|4)   /* i/o error */
 257 #define POLL_PRI        (__SI_POLL|5)   /* high priority input available */
 258 #define POLL_HUP        (__SI_POLL|6)   /* device disconnected */
 259 #define NSIGPOLL        6
 260
 261 /*
 262  * SIGSYS si_codes
 263  */
 264 #define SYS_SECCOMP             (__SI_SYS|1)    /* seccomp triggered */
 265 #define NSIGSYS 1
 266
 267 /*
 268  * sigevent definitions
 269  *
 270  * It seems likely that SIGEV_THREAD will have to be handled from
 271  * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
 272  * thread manager then catches and does the appropriate nonsense.
 273  * However, everything is written out here so as to not get lost.
 274  */
 275 #define SIGEV_SIGNAL    0       /* notify via signal */
 276 #define SIGEV_NONE      1       /* other notification: meaningless */
 277 #define SIGEV_THREAD    2       /* deliver via thread creation */
 278 #define SIGEV_THREAD_ID 4       /* deliver to thread */
 279
 280 /*
 281  * This works because the alignment is ok on all current architectures
 282  * but we leave open this being overridden in the future
 283  */
 284 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE
 285 #define __ARCH_SIGEV_PREAMBLE_SIZE      (sizeof(int) * 2 + sizeof(sigval_t))
 286 #endif
 287
 288 #define SIGEV_MAX_SIZE  64
 289 #define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
 290                 / sizeof(int))
 291
 292 typedef struct sigevent {
 293         sigval_t sigev_value;
 294         int sigev_signo;
 295         int sigev_notify;
 296         union {
 297                 int _pad[SIGEV_PAD_SIZE];
 298                  int _tid;
 299
 300                 struct {
 301                         void (*_function)(sigval_t);
 302                         void *_attribute;       /* really pthread_attr_t */
 303                 } _sigev_thread;
 304         } _sigev_un;
 305 } sigevent_t;
 306
 307 #define sigev_notify_function   _sigev_un._sigev_thread._function
 308 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 309 #define sigev_notify_thread_id   _sigev_un._tid
 310
 311
 312 #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */