[mirror_ubuntu-bionic-kernel.git] / include / uapi / asm-generic / siginfo.h

/* 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

#ifndef __ARCH_SI_UID_T
#define __ARCH_SI_UID_T	__kernel_uid32_t
#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

#ifndef HAVE_ARCH_SIGINFO_T

typedef struct siginfo {
	int si_signo;
	int si_errno;
	int si_code;

	union {
		int _pad[SI_PAD_SIZE];

		/* kill() */
		struct {
			__kernel_pid_t _pid;	/* sender's pid */
			__ARCH_SI_UID_T _uid;	/* sender's uid */
		} _kill;

		/* POSIX.1b timers */
		struct {
			__kernel_timer_t _tid;	/* timer id */
			int _overrun;		/* overrun count */
			char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
			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 */
			__ARCH_SI_UID_T _uid;	/* sender's uid */
			sigval_t _sigval;
		} _rt;

		/* SIGCHLD */
		struct {
			__kernel_pid_t _pid;	/* which child */
			__ARCH_SI_UID_T _uid;	/* sender's uid */
			int _status;		/* exit code */
			__ARCH_SI_CLOCK_T _utime;
			__ARCH_SI_CLOCK_T _stime;
		} _sigchld;

		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
		struct {
			void __user *_addr; /* faulting insn/memory ref. */
#ifdef __ARCH_SI_TRAPNO
			int _trapno;	/* TRAP # which caused the signal */
#endif
			short _addr_lsb; /* LSB of the reported address */
			union {
				/* used when si_code=SEGV_BNDERR */
				struct {
					void __user *_lower;
					void __user *_upper;
				} _addr_bnd;
				/* used when si_code=SEGV_PKUERR */
				__u32 _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;

/* If the arch shares siginfo, then it has SIGSYS. */
#define __ARCH_SIGSYS
#endif

/*
 * 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._pkey
#define si_band		_sifields._sigpoll._band
#define si_fd		_sifields._sigpoll._fd
#ifdef __ARCH_SIGSYS
#define si_call_addr	_sifields._sigsys._call_addr
#define si_syscall	_sifields._sigsys._syscall
#define si_arch		_sifields._sigsys._arch
#endif

/*
 * 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_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 NSIGILL		8

/*
 * 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 NSIGFPE		8

/*
 * 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 */
#define SEGV_PKUERR	4	/* failed protection key checks */
#define NSIGSEGV	4

/*
 * 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 NSIGTRAP	4

/*
 * 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 */
Commit	Line	Data
6f52b16c	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
8a1ab315 DH	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	#ifndef __ARCH_SI_UID_T
	27	#define __ARCH_SI_UID_T __kernel_uid32_t
	28	#endif
	29
	30	/*
	31	* The default "si_band" type is "long", as specified by POSIX.
	32	* However, some architectures want to override this to "int"
	33	* for historical compatibility reasons, so we allow that.
	34	*/
	35	#ifndef __ARCH_SI_BAND_T
	36	#define __ARCH_SI_BAND_T long
	37	#endif
	38
	39	#ifndef __ARCH_SI_CLOCK_T
	40	#define __ARCH_SI_CLOCK_T __kernel_clock_t
	41	#endif
	42
	43	#ifndef __ARCH_SI_ATTRIBUTES
	44	#define __ARCH_SI_ATTRIBUTES
	45	#endif
	46
	47	#ifndef HAVE_ARCH_SIGINFO_T
	48
	49	typedef struct siginfo {
	50	int si_signo;
	51	int si_errno;
	52	int si_code;
	53
	54	union {
	55	int _pad[SI_PAD_SIZE];
	56
	57	/* kill() */
	58	struct {
	59	__kernel_pid_t _pid; /* sender's pid */
	60	__ARCH_SI_UID_T _uid; /* sender's uid */
	61	} _kill;
	62
	63	/* POSIX.1b timers */
	64	struct {
	65	__kernel_timer_t _tid; /* timer id */
66	int _overrun; /* overrun count */
67	char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
68	sigval_t _sigval; /* same as below */
69	int _sys_private; /* not to be passed to user */
70	} _timer;
71
72	/* POSIX.1b signals */
73	struct {
74	__kernel_pid_t _pid; /* sender's pid */
75	__ARCH_SI_UID_T _uid; /* sender's uid */
76	sigval_t _sigval;
77	} _rt;
78
79	/* SIGCHLD */
80	struct {
81	__kernel_pid_t _pid; /* which child */
82	__ARCH_SI_UID_T _uid; /* sender's uid */
83	int _status; /* exit code */
84	__ARCH_SI_CLOCK_T _utime;
85	__ARCH_SI_CLOCK_T _stime;
86	} _sigchld;
87
88	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
89	struct {
90	void __user _addr; / faulting insn/memory ref. */
91	#ifdef __ARCH_SI_TRAPNO
92	int _trapno; /* TRAP # which caused the signal */
93	#endif
94	short _addr_lsb; /* LSB of the reported address */
cd0ea35f DH	95	union {
	96	/* used when si_code=SEGV_BNDERR */
	97	struct {
	98	void __user *_lower;
	99	void __user *_upper;
	100	} _addr_bnd;
	101	/* used when si_code=SEGV_PKUERR */
49cd53bf	102	__u32 _pkey;
cd0ea35f	103	};
8a1ab315 DH	104	} _sigfault;
	105
	106	/* SIGPOLL */
	107	struct {
	108	__ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
	109	int _fd;
	110	} _sigpoll;
	111
	112	/* SIGSYS */
	113	struct {
	114	void __user _call_addr; / calling user insn */
	115	int _syscall; /* triggering system call number */
	116	unsigned int _arch; /* AUDIT_ARCH_* of syscall */
	117	} _sigsys;
	118	} _sifields;
	119	} __ARCH_SI_ATTRIBUTES siginfo_t;
	120
	121	/* If the arch shares siginfo, then it has SIGSYS. */
	122	#define __ARCH_SIGSYS
	123	#endif
	124
	125	/*
	126	* How these fields are to be accessed.
	127	*/
	128	#define si_pid _sifields._kill._pid
	129	#define si_uid _sifields._kill._uid
	130	#define si_tid _sifields._timer._tid
	131	#define si_overrun _sifields._timer._overrun
	132	#define si_sys_private _sifields._timer._sys_private
	133	#define si_status _sifields._sigchld._status
	134	#define si_utime _sifields._sigchld._utime
	135	#define si_stime _sifields._sigchld._stime
	136	#define si_value _sifields._rt._sigval
	137	#define si_int _sifields._rt._sigval.sival_int
	138	#define si_ptr _sifields._rt._sigval.sival_ptr
	139	#define si_addr _sifields._sigfault._addr
	140	#ifdef __ARCH_SI_TRAPNO
	141	#define si_trapno _sifields._sigfault._trapno
	142	#endif
	143	#define si_addr_lsb _sifields._sigfault._addr_lsb
ee1b58d3 QR	144	#define si_lower _sifields._sigfault._addr_bnd._lower
ee1b58d3 QR	145	#define si_upper _sifields._sigfault._addr_bnd._upper
cd0ea35f	146	#define si_pkey _sifields._sigfault._pkey
8a1ab315 DH	147	#define si_band _sifields._sigpoll._band
	148	#define si_fd _sifields._sigpoll._fd
	149	#ifdef __ARCH_SIGSYS
	150	#define si_call_addr _sifields._sigsys._call_addr
	151	#define si_syscall _sifields._sigsys._syscall
	152	#define si_arch _sifields._sigsys._arch
	153	#endif
	154
8a1ab315 DH	155	/*
	156	* si_code values
	157	* Digital reserves positive values for kernel-generated signals.
	158	*/
	159	#define SI_USER 0 /* sent by kill, sigsend, raise */
	160	#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
	161	#define SI_QUEUE -1 /* sent by sigqueue */
cc731525 EB	162	#define SI_TIMER -2 /* sent by timer expiration */
cc731525 EB	163	#define SI_MESGQ -3 /* sent by real time mesq state change */
8a1ab315	164	#define SI_ASYNCIO -4 /* sent by AIO completion */
cc731525	165	#define SI_SIGIO -5 /* sent by queued SIGIO */
8a1ab315 DH	166	#define SI_TKILL -6 /* sent by tkill system call */
	167	#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */
	168
	169	#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
	170	#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
	171
	172	/*
	173	* SIGILL si_codes
	174	*/
cc731525 EB	175	#define ILL_ILLOPC 1 /* illegal opcode */
	176	#define ILL_ILLOPN 2 /* illegal operand */
	177	#define ILL_ILLADR 3 /* illegal addressing mode */
	178	#define ILL_ILLTRP 4 /* illegal trap */
	179	#define ILL_PRVOPC 5 /* privileged opcode */
	180	#define ILL_PRVREG 6 /* privileged register */
	181	#define ILL_COPROC 7 /* coprocessor error */
	182	#define ILL_BADSTK 8 /* internal stack error */
8a1ab315 DH	183	#define NSIGILL 8
	184
	185	/*
	186	* SIGFPE si_codes
	187	*/
cc731525 EB	188	#define FPE_INTDIV 1 /* integer divide by zero */
	189	#define FPE_INTOVF 2 /* integer overflow */
	190	#define FPE_FLTDIV 3 /* floating point divide by zero */
	191	#define FPE_FLTOVF 4 /* floating point overflow */
	192	#define FPE_FLTUND 5 /* floating point underflow */
	193	#define FPE_FLTRES 6 /* floating point inexact result */
	194	#define FPE_FLTINV 7 /* floating point invalid operation */
	195	#define FPE_FLTSUB 8 /* subscript out of range */
8a1ab315 DH	196	#define NSIGFPE 8
	197
	198	/*
	199	* SIGSEGV si_codes
	200	*/
cc731525 EB	201	#define SEGV_MAPERR 1 /* address not mapped to object */
	202	#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
	203	#define SEGV_BNDERR 3 /* failed address bound checks */
	204	#define SEGV_PKUERR 4 /* failed protection key checks */
cd0ea35f	205	#define NSIGSEGV 4
8a1ab315 DH	206
	207	/*
	208	* SIGBUS si_codes
	209	*/
cc731525 EB	210	#define BUS_ADRALN 1 /* invalid address alignment */
	211	#define BUS_ADRERR 2 /* non-existent physical address */
	212	#define BUS_OBJERR 3 /* object specific hardware error */
8a1ab315	213	/* hardware memory error consumed on a machine check: action required */
cc731525	214	#define BUS_MCEERR_AR 4
8a1ab315	215	/* hardware memory error detected in process but not consumed: action optional*/
cc731525	216	#define BUS_MCEERR_AO 5
8a1ab315 DH	217	#define NSIGBUS 5
	218
	219	/*
	220	* SIGTRAP si_codes
	221	*/
cc731525 EB	222	#define TRAP_BRKPT 1 /* process breakpoint */
	223	#define TRAP_TRACE 2 /* process trace trap */
	224	#define TRAP_BRANCH 3 /* process taken branch trap */
	225	#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
8a1ab315 DH	226	#define NSIGTRAP 4
	227
	228	/*
	229	* SIGCHLD si_codes
	230	*/
cc731525 EB	231	#define CLD_EXITED 1 /* child has exited */
	232	#define CLD_KILLED 2 /* child was killed */
	233	#define CLD_DUMPED 3 /* child terminated abnormally */
	234	#define CLD_TRAPPED 4 /* traced child has trapped */
	235	#define CLD_STOPPED 5 /* child has stopped */
	236	#define CLD_CONTINUED 6 /* stopped child has continued */
8a1ab315 DH	237	#define NSIGCHLD 6
	238
	239	/*
d08477aa	240	* SIGPOLL (or any other signal without signal specific si_codes) si_codes
8a1ab315	241	*/
cc731525 EB	242	#define POLL_IN 1 /* data input available */
	243	#define POLL_OUT 2 /* output buffers available */
	244	#define POLL_MSG 3 /* input message available */
	245	#define POLL_ERR 4 /* i/o error */
	246	#define POLL_PRI 5 /* high priority input available */
	247	#define POLL_HUP 6 /* device disconnected */
8a1ab315 DH	248	#define NSIGPOLL 6
	249
	250	/*
	251	* SIGSYS si_codes
	252	*/
cc731525 EB	253	#define SYS_SECCOMP 1 /* seccomp triggered */
cc731525 EB	254	#define NSIGSYS 1
8a1ab315 DH	255
	256	/*
	257	* sigevent definitions
	258	*
	259	* It seems likely that SIGEV_THREAD will have to be handled from
	260	* userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
	261	* thread manager then catches and does the appropriate nonsense.
	262	* However, everything is written out here so as to not get lost.
	263	*/
	264	#define SIGEV_SIGNAL 0 /* notify via signal */
	265	#define SIGEV_NONE 1 /* other notification: meaningless */
	266	#define SIGEV_THREAD 2 /* deliver via thread creation */
	267	#define SIGEV_THREAD_ID 4 /* deliver to thread */
	268
	269	/*
	270	* This works because the alignment is ok on all current architectures
	271	* but we leave open this being overridden in the future
	272	*/
	273	#ifndef __ARCH_SIGEV_PREAMBLE_SIZE
	274	#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t))
	275	#endif
	276
	277	#define SIGEV_MAX_SIZE 64
	278	#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
	279	/ sizeof(int))
	280
	281	typedef struct sigevent {
	282	sigval_t sigev_value;
	283	int sigev_signo;
	284	int sigev_notify;
	285	union {
	286	int _pad[SIGEV_PAD_SIZE];
	287	int _tid;
	288
	289	struct {
	290	void (*_function)(sigval_t);
	291	void _attribute; / really pthread_attr_t */
	292	} _sigev_thread;
	293	} _sigev_un;
	294	} sigevent_t;
	295
	296	#define sigev_notify_function _sigev_un._sigev_thread._function
	297	#define sigev_notify_attributes _sigev_un._sigev_thread._attribute
	298	#define sigev_notify_thread_id _sigev_un._tid
	299
	300
	301	#endif /* _UAPI_ASM_GENERIC_SIGINFO_H */