mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-11 11:09:13 +00:00
db78e6a0a6
Both powerpc and alpha have cases where they wronly set si_code to 0 in combination with SIGTRAP and don't mean SI_USER. About half the time this is because the architecture can not report accurately what kind of trap exception triggered the trap exception. The other half the time it looks like no one has bothered to figure out an appropriate si_code. For the cases where the architecture does not have enough information or is too lazy to figure out exactly what kind of trap exception it is define TRAP_UNK. Cc: linux-api@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-alpha@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
333 lines
9.8 KiB
C
333 lines
9.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _UAPI_ASM_GENERIC_SIGINFO_H
|
|
#define _UAPI_ASM_GENERIC_SIGINFO_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
|
|
typedef union sigval {
|
|
int sival_int;
|
|
void __user *sival_ptr;
|
|
} sigval_t;
|
|
|
|
/*
|
|
* This is the size (including padding) of the part of the
|
|
* struct siginfo that is before the union.
|
|
*/
|
|
#ifndef __ARCH_SI_PREAMBLE_SIZE
|
|
#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
|
|
#endif
|
|
|
|
#define SI_MAX_SIZE 128
|
|
#ifndef SI_PAD_SIZE
|
|
#define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
|
|
#endif
|
|
|
|
/*
|
|
* The default "si_band" type is "long", as specified by POSIX.
|
|
* However, some architectures want to override this to "int"
|
|
* for historical compatibility reasons, so we allow that.
|
|
*/
|
|
#ifndef __ARCH_SI_BAND_T
|
|
#define __ARCH_SI_BAND_T long
|
|
#endif
|
|
|
|
#ifndef __ARCH_SI_CLOCK_T
|
|
#define __ARCH_SI_CLOCK_T __kernel_clock_t
|
|
#endif
|
|
|
|
#ifndef __ARCH_SI_ATTRIBUTES
|
|
#define __ARCH_SI_ATTRIBUTES
|
|
#endif
|
|
|
|
typedef struct siginfo {
|
|
int si_signo;
|
|
#ifndef __ARCH_HAS_SWAPPED_SIGINFO
|
|
int si_errno;
|
|
int si_code;
|
|
#else
|
|
int si_code;
|
|
int si_errno;
|
|
#endif
|
|
|
|
union {
|
|
int _pad[SI_PAD_SIZE];
|
|
|
|
/* kill() */
|
|
struct {
|
|
__kernel_pid_t _pid; /* sender's pid */
|
|
__kernel_uid32_t _uid; /* sender's uid */
|
|
} _kill;
|
|
|
|
/* POSIX.1b timers */
|
|
struct {
|
|
__kernel_timer_t _tid; /* timer id */
|
|
int _overrun; /* overrun count */
|
|
sigval_t _sigval; /* same as below */
|
|
int _sys_private; /* not to be passed to user */
|
|
} _timer;
|
|
|
|
/* POSIX.1b signals */
|
|
struct {
|
|
__kernel_pid_t _pid; /* sender's pid */
|
|
__kernel_uid32_t _uid; /* sender's uid */
|
|
sigval_t _sigval;
|
|
} _rt;
|
|
|
|
/* SIGCHLD */
|
|
struct {
|
|
__kernel_pid_t _pid; /* which child */
|
|
__kernel_uid32_t _uid; /* sender's uid */
|
|
int _status; /* exit code */
|
|
__ARCH_SI_CLOCK_T _utime;
|
|
__ARCH_SI_CLOCK_T _stime;
|
|
} _sigchld;
|
|
|
|
/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
|
|
struct {
|
|
void __user *_addr; /* faulting insn/memory ref. */
|
|
#ifdef __ARCH_SI_TRAPNO
|
|
int _trapno; /* TRAP # which caused the signal */
|
|
#endif
|
|
#ifdef __ia64__
|
|
int _imm; /* immediate value for "break" */
|
|
unsigned int _flags; /* see ia64 si_flags */
|
|
unsigned long _isr; /* isr */
|
|
#endif
|
|
|
|
#define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \
|
|
sizeof(short) : __alignof__(void *))
|
|
union {
|
|
/*
|
|
* used when si_code=BUS_MCEERR_AR or
|
|
* used when si_code=BUS_MCEERR_AO
|
|
*/
|
|
short _addr_lsb; /* LSB of the reported address */
|
|
/* used when si_code=SEGV_BNDERR */
|
|
struct {
|
|
char _dummy_bnd[__ADDR_BND_PKEY_PAD];
|
|
void __user *_lower;
|
|
void __user *_upper;
|
|
} _addr_bnd;
|
|
/* used when si_code=SEGV_PKUERR */
|
|
struct {
|
|
char _dummy_pkey[__ADDR_BND_PKEY_PAD];
|
|
__u32 _pkey;
|
|
} _addr_pkey;
|
|
};
|
|
} _sigfault;
|
|
|
|
/* SIGPOLL */
|
|
struct {
|
|
__ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
|
|
int _fd;
|
|
} _sigpoll;
|
|
|
|
/* SIGSYS */
|
|
struct {
|
|
void __user *_call_addr; /* calling user insn */
|
|
int _syscall; /* triggering system call number */
|
|
unsigned int _arch; /* AUDIT_ARCH_* of syscall */
|
|
} _sigsys;
|
|
} _sifields;
|
|
} __ARCH_SI_ATTRIBUTES siginfo_t;
|
|
|
|
/*
|
|
* How these fields are to be accessed.
|
|
*/
|
|
#define si_pid _sifields._kill._pid
|
|
#define si_uid _sifields._kill._uid
|
|
#define si_tid _sifields._timer._tid
|
|
#define si_overrun _sifields._timer._overrun
|
|
#define si_sys_private _sifields._timer._sys_private
|
|
#define si_status _sifields._sigchld._status
|
|
#define si_utime _sifields._sigchld._utime
|
|
#define si_stime _sifields._sigchld._stime
|
|
#define si_value _sifields._rt._sigval
|
|
#define si_int _sifields._rt._sigval.sival_int
|
|
#define si_ptr _sifields._rt._sigval.sival_ptr
|
|
#define si_addr _sifields._sigfault._addr
|
|
#ifdef __ARCH_SI_TRAPNO
|
|
#define si_trapno _sifields._sigfault._trapno
|
|
#endif
|
|
#define si_addr_lsb _sifields._sigfault._addr_lsb
|
|
#define si_lower _sifields._sigfault._addr_bnd._lower
|
|
#define si_upper _sifields._sigfault._addr_bnd._upper
|
|
#define si_pkey _sifields._sigfault._addr_pkey._pkey
|
|
#define si_band _sifields._sigpoll._band
|
|
#define si_fd _sifields._sigpoll._fd
|
|
#define si_call_addr _sifields._sigsys._call_addr
|
|
#define si_syscall _sifields._sigsys._syscall
|
|
#define si_arch _sifields._sigsys._arch
|
|
|
|
/*
|
|
* si_code values
|
|
* Digital reserves positive values for kernel-generated signals.
|
|
*/
|
|
#define SI_USER 0 /* sent by kill, sigsend, raise */
|
|
#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
|
|
#define SI_QUEUE -1 /* sent by sigqueue */
|
|
#define SI_TIMER -2 /* sent by timer expiration */
|
|
#define SI_MESGQ -3 /* sent by real time mesq state change */
|
|
#define SI_ASYNCIO -4 /* sent by AIO completion */
|
|
#define SI_SIGIO -5 /* sent by queued SIGIO */
|
|
#define SI_TKILL -6 /* sent by tkill system call */
|
|
#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */
|
|
#define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */
|
|
|
|
#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
|
|
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
|
|
|
|
/*
|
|
* SIGILL si_codes
|
|
*/
|
|
#define ILL_ILLOPC 1 /* illegal opcode */
|
|
#define ILL_ILLOPN 2 /* illegal operand */
|
|
#define ILL_ILLADR 3 /* illegal addressing mode */
|
|
#define ILL_ILLTRP 4 /* illegal trap */
|
|
#define ILL_PRVOPC 5 /* privileged opcode */
|
|
#define ILL_PRVREG 6 /* privileged register */
|
|
#define ILL_COPROC 7 /* coprocessor error */
|
|
#define ILL_BADSTK 8 /* internal stack error */
|
|
#define ILL_BADIADDR 9 /* unimplemented instruction address */
|
|
#define __ILL_BREAK 10 /* illegal break */
|
|
#define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */
|
|
#define NSIGILL 11
|
|
|
|
/*
|
|
* SIGFPE si_codes
|
|
*/
|
|
#define FPE_INTDIV 1 /* integer divide by zero */
|
|
#define FPE_INTOVF 2 /* integer overflow */
|
|
#define FPE_FLTDIV 3 /* floating point divide by zero */
|
|
#define FPE_FLTOVF 4 /* floating point overflow */
|
|
#define FPE_FLTUND 5 /* floating point underflow */
|
|
#define FPE_FLTRES 6 /* floating point inexact result */
|
|
#define FPE_FLTINV 7 /* floating point invalid operation */
|
|
#define FPE_FLTSUB 8 /* subscript out of range */
|
|
#define __FPE_DECOVF 9 /* decimal overflow */
|
|
#define __FPE_DECDIV 10 /* decimal division by zero */
|
|
#define __FPE_DECERR 11 /* packed decimal error */
|
|
#define __FPE_INVASC 12 /* invalid ASCII digit */
|
|
#define __FPE_INVDEC 13 /* invalid decimal digit */
|
|
#define FPE_FLTUNK 14 /* undiagnosed floating-point exception */
|
|
#define FPE_CONDTRAP 15 /* trap on condition */
|
|
#define NSIGFPE 15
|
|
|
|
/*
|
|
* SIGSEGV si_codes
|
|
*/
|
|
#define SEGV_MAPERR 1 /* address not mapped to object */
|
|
#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
|
|
#define SEGV_BNDERR 3 /* failed address bound checks */
|
|
#ifdef __ia64__
|
|
# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */
|
|
#else
|
|
# define SEGV_PKUERR 4 /* failed protection key checks */
|
|
#endif
|
|
#define SEGV_ACCADI 5 /* ADI not enabled for mapped object */
|
|
#define SEGV_ADIDERR 6 /* Disrupting MCD error */
|
|
#define SEGV_ADIPERR 7 /* Precise MCD exception */
|
|
#define NSIGSEGV 7
|
|
|
|
/*
|
|
* SIGBUS si_codes
|
|
*/
|
|
#define BUS_ADRALN 1 /* invalid address alignment */
|
|
#define BUS_ADRERR 2 /* non-existent physical address */
|
|
#define BUS_OBJERR 3 /* object specific hardware error */
|
|
/* hardware memory error consumed on a machine check: action required */
|
|
#define BUS_MCEERR_AR 4
|
|
/* hardware memory error detected in process but not consumed: action optional*/
|
|
#define BUS_MCEERR_AO 5
|
|
#define NSIGBUS 5
|
|
|
|
/*
|
|
* SIGTRAP si_codes
|
|
*/
|
|
#define TRAP_BRKPT 1 /* process breakpoint */
|
|
#define TRAP_TRACE 2 /* process trace trap */
|
|
#define TRAP_BRANCH 3 /* process taken branch trap */
|
|
#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
|
|
#define TRAP_UNK 5 /* undiagnosed trap */
|
|
#define NSIGTRAP 5
|
|
|
|
/*
|
|
* There is an additional set of SIGTRAP si_codes used by ptrace
|
|
* that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP)
|
|
*/
|
|
|
|
/*
|
|
* SIGCHLD si_codes
|
|
*/
|
|
#define CLD_EXITED 1 /* child has exited */
|
|
#define CLD_KILLED 2 /* child was killed */
|
|
#define CLD_DUMPED 3 /* child terminated abnormally */
|
|
#define CLD_TRAPPED 4 /* traced child has trapped */
|
|
#define CLD_STOPPED 5 /* child has stopped */
|
|
#define CLD_CONTINUED 6 /* stopped child has continued */
|
|
#define NSIGCHLD 6
|
|
|
|
/*
|
|
* SIGPOLL (or any other signal without signal specific si_codes) si_codes
|
|
*/
|
|
#define POLL_IN 1 /* data input available */
|
|
#define POLL_OUT 2 /* output buffers available */
|
|
#define POLL_MSG 3 /* input message available */
|
|
#define POLL_ERR 4 /* i/o error */
|
|
#define POLL_PRI 5 /* high priority input available */
|
|
#define POLL_HUP 6 /* device disconnected */
|
|
#define NSIGPOLL 6
|
|
|
|
/*
|
|
* SIGSYS si_codes
|
|
*/
|
|
#define SYS_SECCOMP 1 /* seccomp triggered */
|
|
#define NSIGSYS 1
|
|
|
|
/*
|
|
* sigevent definitions
|
|
*
|
|
* It seems likely that SIGEV_THREAD will have to be handled from
|
|
* userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
|
|
* thread manager then catches and does the appropriate nonsense.
|
|
* However, everything is written out here so as to not get lost.
|
|
*/
|
|
#define SIGEV_SIGNAL 0 /* notify via signal */
|
|
#define SIGEV_NONE 1 /* other notification: meaningless */
|
|
#define SIGEV_THREAD 2 /* deliver via thread creation */
|
|
#define SIGEV_THREAD_ID 4 /* deliver to thread */
|
|
|
|
/*
|
|
* This works because the alignment is ok on all current architectures
|
|
* but we leave open this being overridden in the future
|
|
*/
|
|
#ifndef __ARCH_SIGEV_PREAMBLE_SIZE
|
|
#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t))
|
|
#endif
|
|
|
|
#define SIGEV_MAX_SIZE 64
|
|
#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
|
|
/ sizeof(int))
|
|
|
|
typedef struct sigevent {
|
|
sigval_t sigev_value;
|
|
int sigev_signo;
|
|
int sigev_notify;
|
|
union {
|
|
int _pad[SIGEV_PAD_SIZE];
|
|
int _tid;
|
|
|
|
struct {
|
|
void (*_function)(sigval_t);
|
|
void *_attribute; /* really pthread_attr_t */
|
|
} _sigev_thread;
|
|
} _sigev_un;
|
|
} sigevent_t;
|
|
|
|
#define sigev_notify_function _sigev_un._sigev_thread._function
|
|
#define sigev_notify_attributes _sigev_un._sigev_thread._attribute
|
|
#define sigev_notify_thread_id _sigev_un._tid
|
|
|
|
|
|
#endif /* _UAPI_ASM_GENERIC_SIGINFO_H */
|