1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_ASM_GENERIC_SIGINFO_H 3 #define _UAPI_ASM_GENERIC_SIGINFO_H 4 5 #include <linux/compiler.h> 6 #include <linux/types.h> 7 8 typedef union sigval { 9 int sival_int; 10 void __user *sival_ptr; 11 } sigval_t; 12 13 /* 14 * This is the size (including padding) of the part of the 15 * struct siginfo that is before the union. 16 */ 17 #ifndef __ARCH_SI_PREAMBLE_SIZE 18 #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int)) 19 #endif 20 21 #define SI_MAX_SIZE 128 22 #ifndef SI_PAD_SIZE 23 #define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) 24 #endif 25 26 /* 27 * The default "si_band" type is "long", as specified by POSIX. 28 * However, some architectures want to override this to "int" 29 * for historical compatibility reasons, so we allow that. 30 */ 31 #ifndef __ARCH_SI_BAND_T 32 #define __ARCH_SI_BAND_T long 33 #endif 34 35 #ifndef __ARCH_SI_CLOCK_T 36 #define __ARCH_SI_CLOCK_T __kernel_clock_t 37 #endif 38 39 #ifndef __ARCH_SI_ATTRIBUTES 40 #define __ARCH_SI_ATTRIBUTES 41 #endif 42 43 typedef struct siginfo { 44 int si_signo; 45 #ifndef __ARCH_HAS_SWAPPED_SIGINFO 46 int si_errno; 47 int si_code; 48 #else 49 int si_code; 50 int si_errno; 51 #endif 52 53 union { 54 int _pad[SI_PAD_SIZE]; 55 56 /* kill() */ 57 struct { 58 __kernel_pid_t _pid; /* sender's pid */ 59 __kernel_uid32_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 sigval_t _sigval; /* same as below */ 67 int _sys_private; /* not to be passed to user */ 68 } _timer; 69 70 /* POSIX.1b signals */ 71 struct { 72 __kernel_pid_t _pid; /* sender's pid */ 73 __kernel_uid32_t _uid; /* sender's uid */ 74 sigval_t _sigval; 75 } _rt; 76 77 /* SIGCHLD */ 78 struct { 79 __kernel_pid_t _pid; /* which child */ 80 __kernel_uid32_t _uid; /* sender's uid */ 81 int _status; /* exit code */ 82 __ARCH_SI_CLOCK_T _utime; 83 __ARCH_SI_CLOCK_T _stime; 84 } _sigchld; 85 86 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ 87 struct { 88 void __user *_addr; /* faulting insn/memory ref. */ 89 #ifdef __ARCH_SI_TRAPNO 90 int _trapno; /* TRAP # which caused the signal */ 91 #endif 92 #ifdef __ia64__ 93 int _imm; /* immediate value for "break" */ 94 unsigned int _flags; /* see ia64 si_flags */ 95 unsigned long _isr; /* isr */ 96 #endif 97 union { 98 /* 99 * used when si_code=BUS_MCEERR_AR or 100 * used when si_code=BUS_MCEERR_AO 101 */ 102 short _addr_lsb; /* LSB of the reported address */ 103 /* used when si_code=SEGV_BNDERR */ 104 struct { 105 void *_dummy_bnd; 106 void __user *_lower; 107 void __user *_upper; 108 } _addr_bnd; 109 /* used when si_code=SEGV_PKUERR */ 110 struct { 111 void *_dummy_pkey; 112 __u32 _pkey; 113 } _addr_pkey; 114 }; 115 } _sigfault; 116 117 /* SIGPOLL */ 118 struct { 119 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 120 int _fd; 121 } _sigpoll; 122 123 /* SIGSYS */ 124 struct { 125 void __user *_call_addr; /* calling user insn */ 126 int _syscall; /* triggering system call number */ 127 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 128 } _sigsys; 129 } _sifields; 130 } __ARCH_SI_ATTRIBUTES siginfo_t; 131 132 /* 133 * How these fields are to be accessed. 134 */ 135 #define si_pid _sifields._kill._pid 136 #define si_uid _sifields._kill._uid 137 #define si_tid _sifields._timer._tid 138 #define si_overrun _sifields._timer._overrun 139 #define si_sys_private _sifields._timer._sys_private 140 #define si_status _sifields._sigchld._status 141 #define si_utime _sifields._sigchld._utime 142 #define si_stime _sifields._sigchld._stime 143 #define si_value _sifields._rt._sigval 144 #define si_int _sifields._rt._sigval.sival_int 145 #define si_ptr _sifields._rt._sigval.sival_ptr 146 #define si_addr _sifields._sigfault._addr 147 #ifdef __ARCH_SI_TRAPNO 148 #define si_trapno _sifields._sigfault._trapno 149 #endif 150 #define si_addr_lsb _sifields._sigfault._addr_lsb 151 #define si_lower _sifields._sigfault._addr_bnd._lower 152 #define si_upper _sifields._sigfault._addr_bnd._upper 153 #define si_pkey _sifields._sigfault._addr_pkey._pkey 154 #define si_band _sifields._sigpoll._band 155 #define si_fd _sifields._sigpoll._fd 156 #define si_call_addr _sifields._sigsys._call_addr 157 #define si_syscall _sifields._sigsys._syscall 158 #define si_arch _sifields._sigsys._arch 159 160 /* 161 * si_code values 162 * Digital reserves positive values for kernel-generated signals. 163 */ 164 #define SI_USER 0 /* sent by kill, sigsend, raise */ 165 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 166 #define SI_QUEUE -1 /* sent by sigqueue */ 167 #define SI_TIMER -2 /* sent by timer expiration */ 168 #define SI_MESGQ -3 /* sent by real time mesq state change */ 169 #define SI_ASYNCIO -4 /* sent by AIO completion */ 170 #define SI_SIGIO -5 /* sent by queued SIGIO */ 171 #define SI_TKILL -6 /* sent by tkill system call */ 172 #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 173 #define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ 174 175 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 176 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 177 178 /* 179 * SIGILL si_codes 180 */ 181 #define ILL_ILLOPC 1 /* illegal opcode */ 182 #define ILL_ILLOPN 2 /* illegal operand */ 183 #define ILL_ILLADR 3 /* illegal addressing mode */ 184 #define ILL_ILLTRP 4 /* illegal trap */ 185 #define ILL_PRVOPC 5 /* privileged opcode */ 186 #define ILL_PRVREG 6 /* privileged register */ 187 #define ILL_COPROC 7 /* coprocessor error */ 188 #define ILL_BADSTK 8 /* internal stack error */ 189 #define ILL_BADIADDR 9 /* unimplemented instruction address */ 190 #define __ILL_BREAK 10 /* illegal break */ 191 #define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ 192 #define NSIGILL 11 193 194 /* 195 * SIGFPE si_codes 196 */ 197 #define FPE_INTDIV 1 /* integer divide by zero */ 198 #define FPE_INTOVF 2 /* integer overflow */ 199 #define FPE_FLTDIV 3 /* floating point divide by zero */ 200 #define FPE_FLTOVF 4 /* floating point overflow */ 201 #define FPE_FLTUND 5 /* floating point underflow */ 202 #define FPE_FLTRES 6 /* floating point inexact result */ 203 #define FPE_FLTINV 7 /* floating point invalid operation */ 204 #define FPE_FLTSUB 8 /* subscript out of range */ 205 #define __FPE_DECOVF 9 /* decimal overflow */ 206 #define __FPE_DECDIV 10 /* decimal division by zero */ 207 #define __FPE_DECERR 11 /* packed decimal error */ 208 #define __FPE_INVASC 12 /* invalid ASCII digit */ 209 #define __FPE_INVDEC 13 /* invalid decimal digit */ 210 #define NSIGFPE 13 211 212 /* 213 * SIGSEGV si_codes 214 */ 215 #define SEGV_MAPERR 1 /* address not mapped to object */ 216 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */ 217 #define SEGV_BNDERR 3 /* failed address bound checks */ 218 #ifdef __ia64__ 219 # define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ 220 #else 221 # define SEGV_PKUERR 4 /* failed protection key checks */ 222 #endif 223 #define NSIGSEGV 4 224 225 /* 226 * SIGBUS si_codes 227 */ 228 #define BUS_ADRALN 1 /* invalid address alignment */ 229 #define BUS_ADRERR 2 /* non-existent physical address */ 230 #define BUS_OBJERR 3 /* object specific hardware error */ 231 /* hardware memory error consumed on a machine check: action required */ 232 #define BUS_MCEERR_AR 4 233 /* hardware memory error detected in process but not consumed: action optional*/ 234 #define BUS_MCEERR_AO 5 235 #define NSIGBUS 5 236 237 /* 238 * SIGTRAP si_codes 239 */ 240 #define TRAP_BRKPT 1 /* process breakpoint */ 241 #define TRAP_TRACE 2 /* process trace trap */ 242 #define TRAP_BRANCH 3 /* process taken branch trap */ 243 #define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ 244 #define NSIGTRAP 4 245 246 /* 247 * There is an additional set of SIGTRAP si_codes used by ptrace 248 * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) 249 */ 250 251 /* 252 * SIGCHLD si_codes 253 */ 254 #define CLD_EXITED 1 /* child has exited */ 255 #define CLD_KILLED 2 /* child was killed */ 256 #define CLD_DUMPED 3 /* child terminated abnormally */ 257 #define CLD_TRAPPED 4 /* traced child has trapped */ 258 #define CLD_STOPPED 5 /* child has stopped */ 259 #define CLD_CONTINUED 6 /* stopped child has continued */ 260 #define NSIGCHLD 6 261 262 /* 263 * SIGPOLL (or any other signal without signal specific si_codes) si_codes 264 */ 265 #define POLL_IN 1 /* data input available */ 266 #define POLL_OUT 2 /* output buffers available */ 267 #define POLL_MSG 3 /* input message available */ 268 #define POLL_ERR 4 /* i/o error */ 269 #define POLL_PRI 5 /* high priority input available */ 270 #define POLL_HUP 6 /* device disconnected */ 271 #define NSIGPOLL 6 272 273 /* 274 * SIGSYS si_codes 275 */ 276 #define SYS_SECCOMP 1 /* seccomp triggered */ 277 #define NSIGSYS 1 278 279 /* 280 * sigevent definitions 281 * 282 * It seems likely that SIGEV_THREAD will have to be handled from 283 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 284 * thread manager then catches and does the appropriate nonsense. 285 * However, everything is written out here so as to not get lost. 286 */ 287 #define SIGEV_SIGNAL 0 /* notify via signal */ 288 #define SIGEV_NONE 1 /* other notification: meaningless */ 289 #define SIGEV_THREAD 2 /* deliver via thread creation */ 290 #define SIGEV_THREAD_ID 4 /* deliver to thread */ 291 292 /* 293 * This works because the alignment is ok on all current architectures 294 * but we leave open this being overridden in the future 295 */ 296 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE 297 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 298 #endif 299 300 #define SIGEV_MAX_SIZE 64 301 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 302 / sizeof(int)) 303 304 typedef struct sigevent { 305 sigval_t sigev_value; 306 int sigev_signo; 307 int sigev_notify; 308 union { 309 int _pad[SIGEV_PAD_SIZE]; 310 int _tid; 311 312 struct { 313 void (*_function)(sigval_t); 314 void *_attribute; /* really pthread_attr_t */ 315 } _sigev_thread; 316 } _sigev_un; 317 } sigevent_t; 318 319 #define sigev_notify_function _sigev_un._sigev_thread._function 320 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute 321 #define sigev_notify_thread_id _sigev_un._tid 322 323 324 #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ 325