361 lines
11 KiB
C
361 lines
11 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_ASM_GENERIC_SIGINFO_H
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#define _UAPI_ASM_GENERIC_SIGINFO_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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typedef union sigval {
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int sival_int;
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void __user *sival_ptr;
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} sigval_t;
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#define SI_MAX_SIZE 128
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/*
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* The default "si_band" type is "long", as specified by POSIX.
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* However, some architectures want to override this to "int"
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* for historical compatibility reasons, so we allow that.
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*/
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#ifndef __ARCH_SI_BAND_T
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#define __ARCH_SI_BAND_T long
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#endif
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#ifndef __ARCH_SI_CLOCK_T
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#define __ARCH_SI_CLOCK_T __kernel_clock_t
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#endif
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#ifndef __ARCH_SI_ATTRIBUTES
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#define __ARCH_SI_ATTRIBUTES
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#endif
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/*
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* Be careful when extending this union. On 32bit siginfo_t is 32bit
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* aligned. Which means that a 64bit field or any other field that
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* would increase the alignment of siginfo_t will break the ABI.
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*/
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union __sifields {
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/* kill() */
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struct {
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__kernel_pid_t _pid; /* sender's pid */
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__kernel_uid32_t _uid; /* sender's uid */
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} _kill;
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/* POSIX.1b timers */
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struct {
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__kernel_timer_t _tid; /* timer id */
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int _overrun; /* overrun count */
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sigval_t _sigval; /* same as below */
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int _sys_private; /* not to be passed to user */
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} _timer;
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/* POSIX.1b signals */
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struct {
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__kernel_pid_t _pid; /* sender's pid */
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__kernel_uid32_t _uid; /* sender's uid */
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sigval_t _sigval;
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} _rt;
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/* SIGCHLD */
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struct {
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__kernel_pid_t _pid; /* which child */
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__kernel_uid32_t _uid; /* sender's uid */
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int _status; /* exit code */
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__ARCH_SI_CLOCK_T _utime;
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__ARCH_SI_CLOCK_T _stime;
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} _sigchld;
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/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
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struct {
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void __user *_addr; /* faulting insn/memory ref. */
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#ifdef __ia64__
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int _imm; /* immediate value for "break" */
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unsigned int _flags; /* see ia64 si_flags */
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unsigned long _isr; /* isr */
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#endif
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#define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \
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sizeof(short) : __alignof__(void *))
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union {
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/* used on alpha and sparc */
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int _trapno; /* TRAP # which caused the signal */
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/*
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* used when si_code=BUS_MCEERR_AR or
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* used when si_code=BUS_MCEERR_AO
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*/
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short _addr_lsb; /* LSB of the reported address */
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/* used when si_code=SEGV_BNDERR */
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struct {
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char _dummy_bnd[__ADDR_BND_PKEY_PAD];
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void __user *_lower;
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void __user *_upper;
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} _addr_bnd;
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/* used when si_code=SEGV_PKUERR */
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struct {
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char _dummy_pkey[__ADDR_BND_PKEY_PAD];
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__u32 _pkey;
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} _addr_pkey;
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/* used when si_code=TRAP_PERF */
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struct {
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unsigned long _data;
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__u32 _type;
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__u32 _flags;
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} _perf;
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};
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} _sigfault;
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/* SIGPOLL */
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struct {
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__ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
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int _fd;
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} _sigpoll;
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/* SIGSYS */
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struct {
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void __user *_call_addr; /* calling user insn */
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int _syscall; /* triggering system call number */
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unsigned int _arch; /* AUDIT_ARCH_* of syscall */
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} _sigsys;
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};
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#ifndef __ARCH_HAS_SWAPPED_SIGINFO
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#define __SIGINFO \
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struct { \
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int si_signo; \
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int si_errno; \
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int si_code; \
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union __sifields _sifields; \
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}
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#else
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#define __SIGINFO \
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struct { \
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int si_signo; \
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int si_code; \
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int si_errno; \
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union __sifields _sifields; \
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}
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#endif /* __ARCH_HAS_SWAPPED_SIGINFO */
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typedef struct siginfo {
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union {
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__SIGINFO;
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int _si_pad[SI_MAX_SIZE/sizeof(int)];
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};
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} __ARCH_SI_ATTRIBUTES siginfo_t;
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/*
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* How these fields are to be accessed.
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*/
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#define si_pid _sifields._kill._pid
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#define si_uid _sifields._kill._uid
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#define si_tid _sifields._timer._tid
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#define si_overrun _sifields._timer._overrun
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#define si_sys_private _sifields._timer._sys_private
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#define si_status _sifields._sigchld._status
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#define si_utime _sifields._sigchld._utime
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#define si_stime _sifields._sigchld._stime
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#define si_value _sifields._rt._sigval
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#define si_int _sifields._rt._sigval.sival_int
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#define si_ptr _sifields._rt._sigval.sival_ptr
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#define si_addr _sifields._sigfault._addr
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#define si_trapno _sifields._sigfault._trapno
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#define si_addr_lsb _sifields._sigfault._addr_lsb
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#define si_lower _sifields._sigfault._addr_bnd._lower
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#define si_upper _sifields._sigfault._addr_bnd._upper
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#define si_pkey _sifields._sigfault._addr_pkey._pkey
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#define si_perf_data _sifields._sigfault._perf._data
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#define si_perf_type _sifields._sigfault._perf._type
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#define si_perf_flags _sifields._sigfault._perf._flags
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#define si_band _sifields._sigpoll._band
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#define si_fd _sifields._sigpoll._fd
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#define si_call_addr _sifields._sigsys._call_addr
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#define si_syscall _sifields._sigsys._syscall
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#define si_arch _sifields._sigsys._arch
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/*
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* si_code values
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* Digital reserves positive values for kernel-generated signals.
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*/
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#define SI_USER 0 /* sent by kill, sigsend, raise */
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#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
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#define SI_QUEUE -1 /* sent by sigqueue */
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#define SI_TIMER -2 /* sent by timer expiration */
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#define SI_MESGQ -3 /* sent by real time mesq state change */
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#define SI_ASYNCIO -4 /* sent by AIO completion */
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#define SI_SIGIO -5 /* sent by queued SIGIO */
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#define SI_TKILL -6 /* sent by tkill system call */
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#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */
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#define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */
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#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
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#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
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/*
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* SIGILL si_codes
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*/
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#define ILL_ILLOPC 1 /* illegal opcode */
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#define ILL_ILLOPN 2 /* illegal operand */
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#define ILL_ILLADR 3 /* illegal addressing mode */
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#define ILL_ILLTRP 4 /* illegal trap */
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#define ILL_PRVOPC 5 /* privileged opcode */
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#define ILL_PRVREG 6 /* privileged register */
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#define ILL_COPROC 7 /* coprocessor error */
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#define ILL_BADSTK 8 /* internal stack error */
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#define ILL_BADIADDR 9 /* unimplemented instruction address */
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#define __ILL_BREAK 10 /* illegal break */
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#define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */
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#define NSIGILL 11
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/*
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* SIGFPE si_codes
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*/
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#define FPE_INTDIV 1 /* integer divide by zero */
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#define FPE_INTOVF 2 /* integer overflow */
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#define FPE_FLTDIV 3 /* floating point divide by zero */
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#define FPE_FLTOVF 4 /* floating point overflow */
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#define FPE_FLTUND 5 /* floating point underflow */
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#define FPE_FLTRES 6 /* floating point inexact result */
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#define FPE_FLTINV 7 /* floating point invalid operation */
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#define FPE_FLTSUB 8 /* subscript out of range */
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#define __FPE_DECOVF 9 /* decimal overflow */
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#define __FPE_DECDIV 10 /* decimal division by zero */
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#define __FPE_DECERR 11 /* packed decimal error */
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#define __FPE_INVASC 12 /* invalid ASCII digit */
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#define __FPE_INVDEC 13 /* invalid decimal digit */
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#define FPE_FLTUNK 14 /* undiagnosed floating-point exception */
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#define FPE_CONDTRAP 15 /* trap on condition */
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#define NSIGFPE 15
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/*
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* SIGSEGV si_codes
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*/
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#define SEGV_MAPERR 1 /* address not mapped to object */
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#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
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#define SEGV_BNDERR 3 /* failed address bound checks */
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#ifdef __ia64__
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# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */
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#else
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# define SEGV_PKUERR 4 /* failed protection key checks */
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#endif
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#define SEGV_ACCADI 5 /* ADI not enabled for mapped object */
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#define SEGV_ADIDERR 6 /* Disrupting MCD error */
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#define SEGV_ADIPERR 7 /* Precise MCD exception */
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#define SEGV_MTEAERR 8 /* Asynchronous ARM MTE error */
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#define SEGV_MTESERR 9 /* Synchronous ARM MTE exception */
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#define NSIGSEGV 9
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/*
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* SIGBUS si_codes
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*/
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#define BUS_ADRALN 1 /* invalid address alignment */
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#define BUS_ADRERR 2 /* non-existent physical address */
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#define BUS_OBJERR 3 /* object specific hardware error */
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/* hardware memory error consumed on a machine check: action required */
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#define BUS_MCEERR_AR 4
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/* hardware memory error detected in process but not consumed: action optional*/
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#define BUS_MCEERR_AO 5
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#define NSIGBUS 5
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/*
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* SIGTRAP si_codes
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*/
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#define TRAP_BRKPT 1 /* process breakpoint */
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#define TRAP_TRACE 2 /* process trace trap */
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#define TRAP_BRANCH 3 /* process taken branch trap */
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#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
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#define TRAP_UNK 5 /* undiagnosed trap */
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#define TRAP_PERF 6 /* perf event with sigtrap=1 */
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#define NSIGTRAP 6
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/*
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* There is an additional set of SIGTRAP si_codes used by ptrace
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* that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP)
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*/
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/*
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* Flags for si_perf_flags if SIGTRAP si_code is TRAP_PERF.
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*/
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#define TRAP_PERF_FLAG_ASYNC (1u << 0)
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/*
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* SIGCHLD si_codes
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*/
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#define CLD_EXITED 1 /* child has exited */
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#define CLD_KILLED 2 /* child was killed */
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#define CLD_DUMPED 3 /* child terminated abnormally */
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#define CLD_TRAPPED 4 /* traced child has trapped */
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#define CLD_STOPPED 5 /* child has stopped */
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#define CLD_CONTINUED 6 /* stopped child has continued */
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#define NSIGCHLD 6
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/*
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* SIGPOLL (or any other signal without signal specific si_codes) si_codes
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*/
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#define POLL_IN 1 /* data input available */
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#define POLL_OUT 2 /* output buffers available */
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#define POLL_MSG 3 /* input message available */
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#define POLL_ERR 4 /* i/o error */
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#define POLL_PRI 5 /* high priority input available */
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#define POLL_HUP 6 /* device disconnected */
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#define NSIGPOLL 6
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/*
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* SIGSYS si_codes
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*/
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#define SYS_SECCOMP 1 /* seccomp triggered */
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#define SYS_USER_DISPATCH 2 /* syscall user dispatch triggered */
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#define NSIGSYS 2
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/*
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* SIGEMT si_codes
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*/
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#define EMT_TAGOVF 1 /* tag overflow */
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#define NSIGEMT 1
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/*
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* sigevent definitions
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*
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* It seems likely that SIGEV_THREAD will have to be handled from
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* userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
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* thread manager then catches and does the appropriate nonsense.
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* However, everything is written out here so as to not get lost.
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*/
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#define SIGEV_SIGNAL 0 /* notify via signal */
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#define SIGEV_NONE 1 /* other notification: meaningless */
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#define SIGEV_THREAD 2 /* deliver via thread creation */
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#define SIGEV_THREAD_ID 4 /* deliver to thread */
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/*
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* This works because the alignment is ok on all current architectures
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* but we leave open this being overridden in the future
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*/
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#ifndef __ARCH_SIGEV_PREAMBLE_SIZE
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#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t))
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#endif
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#define SIGEV_MAX_SIZE 64
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#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
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/ sizeof(int))
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typedef struct sigevent {
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sigval_t sigev_value;
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int sigev_signo;
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int sigev_notify;
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union {
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int _pad[SIGEV_PAD_SIZE];
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int _tid;
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struct {
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void (*_function)(sigval_t);
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void *_attribute; /* really pthread_attr_t */
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} _sigev_thread;
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} _sigev_un;
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} sigevent_t;
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#define sigev_notify_function _sigev_un._sigev_thread._function
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#define sigev_notify_attributes _sigev_un._sigev_thread._attribute
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#define sigev_notify_thread_id _sigev_un._tid
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#endif /* _UAPI_ASM_GENERIC_SIGINFO_H */
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