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 #ifdef __KERNEL__
 155 #define __SI_MASK       0xffff0000u
 156 #define __SI_KILL       (0 << 16)
 157 #define __SI_TIMER      (1 << 16)
 158 #define __SI_POLL       (2 << 16)
 159 #define __SI_FAULT      (3 << 16)
 160 #define __SI_CHLD       (4 << 16)
 161 #define __SI_RT         (5 << 16)
 162 #define __SI_MESGQ      (6 << 16)
 163 #define __SI_SYS        (7 << 16)
 164 #define __SI_CODE(T,N)  ((T) | ((N) & 0xffff))
 165 #else /* __KERNEL__ */
 166 #define __SI_KILL       0
 167 #define __SI_TIMER      0
 168 #define __SI_POLL       0
 169 #define __SI_FAULT      0
 170 #define __SI_CHLD       0
 171 #define __SI_RT         0
 172 #define __SI_MESGQ      0
 173 #define __SI_SYS        0
 174 #define __SI_CODE(T,N)  (N)
 175 #endif /* __KERNEL__ */
 176
 177 /*
 178  * si_code values
 179  * Digital reserves positive values for kernel-generated signals.
 180  */
 181 #define SI_USER         0               /* sent by kill, sigsend, raise */
 182 #define SI_KERNEL       0x80            /* sent by the kernel from somewhere */
 183 #define SI_QUEUE        -1              /* sent by sigqueue */
 184 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
 185 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */
 186 #define SI_ASYNCIO      -4              /* sent by AIO completion */
 187 #define SI_SIGIO        -5              /* sent by queued SIGIO */
 188 #define SI_TKILL        -6              /* sent by tkill system call */
 189 #define SI_DETHREAD     -7              /* sent by execve() killing subsidiary threads */
 190
 191 #define SI_FROMUSER(siptr)      ((siptr)->si_code <= 0)
 192 #define SI_FROMKERNEL(siptr)    ((siptr)->si_code > 0)
 193
 194 /*
 195  * SIGILL si_codes
 196  */
 197 #define ILL_ILLOPC      (__SI_FAULT|1)  /* illegal opcode */
 198 #define ILL_ILLOPN      (__SI_FAULT|2)  /* illegal operand */
 199 #define ILL_ILLADR      (__SI_FAULT|3)  /* illegal addressing mode */
 200 #define ILL_ILLTRP      (__SI_FAULT|4)  /* illegal trap */
 201 #define ILL_PRVOPC      (__SI_FAULT|5)  /* privileged opcode */
 202 #define ILL_PRVREG      (__SI_FAULT|6)  /* privileged register */
 203 #define ILL_COPROC      (__SI_FAULT|7)  /* coprocessor error */
 204 #define ILL_BADSTK      (__SI_FAULT|8)  /* internal stack error */
 205 #define NSIGILL         8
 206
 207 /*
 208  * SIGFPE si_codes
 209  */
 210 #define FPE_INTDIV      (__SI_FAULT|1)  /* integer divide by zero */
 211 #define FPE_INTOVF      (__SI_FAULT|2)  /* integer overflow */
 212 #define FPE_FLTDIV      (__SI_FAULT|3)  /* floating point divide by zero */
 213 #define FPE_FLTOVF      (__SI_FAULT|4)  /* floating point overflow */
 214 #define FPE_FLTUND      (__SI_FAULT|5)  /* floating point underflow */
 215 #define FPE_FLTRES      (__SI_FAULT|6)  /* floating point inexact result */
 216 #define FPE_FLTINV      (__SI_FAULT|7)  /* floating point invalid operation */
 217 #define FPE_FLTSUB      (__SI_FAULT|8)  /* subscript out of range */
 218 #define NSIGFPE         8
 219
 220 /*
 221  * SIGSEGV si_codes
 222  */
 223 #define SEGV_MAPERR     (__SI_FAULT|1)  /* address not mapped to object */
 224 #define SEGV_ACCERR     (__SI_FAULT|2)  /* invalid permissions for mapped object */
 225 #define SEGV_BNDERR     (__SI_FAULT|3)  /* failed address bound checks */
 226 #define SEGV_PKUERR     (__SI_FAULT|4)  /* failed protection key checks */
 227 #define NSIGSEGV        4
 228
 229 /*
 230  * SIGBUS si_codes
 231  */
 232 #define BUS_ADRALN      (__SI_FAULT|1)  /* invalid address alignment */
 233 #define BUS_ADRERR      (__SI_FAULT|2)  /* non-existent physical address */
 234 #define BUS_OBJERR      (__SI_FAULT|3)  /* object specific hardware error */
 235 /* hardware memory error consumed on a machine check: action required */
 236 #define BUS_MCEERR_AR   (__SI_FAULT|4)
 237 /* hardware memory error detected in process but not consumed: action optional*/
 238 #define BUS_MCEERR_AO   (__SI_FAULT|5)
 239 #define NSIGBUS         5
 240
 241 /*
 242  * SIGTRAP si_codes
 243  */
 244 #define TRAP_BRKPT      (__SI_FAULT|1)  /* process breakpoint */
 245 #define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */
 246 #define TRAP_BRANCH     (__SI_FAULT|3)  /* process taken branch trap */
 247 #define TRAP_HWBKPT     (__SI_FAULT|4)  /* hardware breakpoint/watchpoint */
 248 #define NSIGTRAP        4
 249
 250 /*
 251  * SIGCHLD si_codes
 252  */
 253 #define CLD_EXITED      (__SI_CHLD|1)   /* child has exited */
 254 #define CLD_KILLED      (__SI_CHLD|2)   /* child was killed */
 255 #define CLD_DUMPED      (__SI_CHLD|3)   /* child terminated abnormally */
 256 #define CLD_TRAPPED     (__SI_CHLD|4)   /* traced child has trapped */
 257 #define CLD_STOPPED     (__SI_CHLD|5)   /* child has stopped */
 258 #define CLD_CONTINUED   (__SI_CHLD|6)   /* stopped child has continued */
 259 #define NSIGCHLD        6
 260
 261 /*
 262  * SIGPOLL si_codes
 263  */
 264 #define POLL_IN         (__SI_POLL|1)   /* data input available */
 265 #define POLL_OUT        (__SI_POLL|2)   /* output buffers available */
 266 #define POLL_MSG        (__SI_POLL|3)   /* input message available */
 267 #define POLL_ERR        (__SI_POLL|4)   /* i/o error */
 268 #define POLL_PRI        (__SI_POLL|5)   /* high priority input available */
 269 #define POLL_HUP        (__SI_POLL|6)   /* device disconnected */
 270 #define NSIGPOLL        6
 271
 272 /*
 273  * SIGSYS si_codes
 274  */
 275 #define SYS_SECCOMP             (__SI_SYS|1)    /* seccomp triggered */
 276 #define NSIGSYS 1
 277
 278 /*
 279  * sigevent definitions
 280  *
 281  * It seems likely that SIGEV_THREAD will have to be handled from
 282  * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
 283  * thread manager then catches and does the appropriate nonsense.
 284  * However, everything is written out here so as to not get lost.
 285  */
 286 #define SIGEV_SIGNAL    0       /* notify via signal */
 287 #define SIGEV_NONE      1       /* other notification: meaningless */
 288 #define SIGEV_THREAD    2       /* deliver via thread creation */
 289 #define SIGEV_THREAD_ID 4       /* deliver to thread */
 290
 291 /*
 292  * This works because the alignment is ok on all current architectures
 293  * but we leave open this being overridden in the future
 294  */
 295 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE
 296 #define __ARCH_SIGEV_PREAMBLE_SIZE      (sizeof(int) * 2 + sizeof(sigval_t))
 297 #endif
 298
 299 #define SIGEV_MAX_SIZE  64
 300 #define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
 301                 / sizeof(int))
 302
 303 typedef struct sigevent {
 304         sigval_t sigev_value;
 305         int sigev_signo;
 306         int sigev_notify;
 307         union {
 308                 int _pad[SIGEV_PAD_SIZE];
 309                  int _tid;
 310
 311                 struct {
 312                         void (*_function)(sigval_t);
 313                         void *_attribute;       /* really pthread_attr_t */
 314                 } _sigev_thread;
 315         } _sigev_un;
 316 } sigevent_t;
 317
 318 #define sigev_notify_function   _sigev_un._sigev_thread._function
 319 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 320 #define sigev_notify_thread_id   _sigev_un._tid
 321
 322
 323 #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */