[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / signal.h

#ifndef _LINUX_SIGNAL_H
#define _LINUX_SIGNAL_H

#include <linux/list.h>
#include <linux/spinlock.h>
#include <asm/signal.h>
#include <asm/siginfo.h>

#ifdef __KERNEL__

/*
 * These values of sa_flags are used only by the kernel as part of the
 * irq handling routines.
 *
 * SA_INTERRUPT is also used by the irq handling routines.
 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 */
#define SA_PROBE		SA_ONESHOT
#define SA_SAMPLE_RANDOM	SA_RESTART
#define SA_SHIRQ		0x04000000
/*
 * As above, these correspond to the IORESOURCE_IRQ_* defines in
 * linux/ioport.h to select the interrupt line behaviour.  When
 * requesting an interrupt without specifying a SA_TRIGGER, the
 * setting should be assumed to be "as already configured", which
 * may be as per machine or firmware initialisation.
 */
#define SA_TRIGGER_LOW		0x00000008
#define SA_TRIGGER_HIGH		0x00000004
#define SA_TRIGGER_FALLING	0x00000002
#define SA_TRIGGER_RISING	0x00000001
#define SA_TRIGGER_MASK	(SA_TRIGGER_HIGH|SA_TRIGGER_LOW|\
				 SA_TRIGGER_RISING|SA_TRIGGER_FALLING)

/*
 * Real Time signals may be queued.
 */

struct sigqueue {
	struct list_head list;
	int flags;
	siginfo_t info;
	struct user_struct *user;
};

/* flags values. */
#define SIGQUEUE_PREALLOC	1

struct sigpending {
	struct list_head list;
	sigset_t signal;
};

/*
 * Define some primitives to manipulate sigset_t.
 */

#ifndef __HAVE_ARCH_SIG_BITOPS
#include <linux/bitops.h>

/* We don't use <linux/bitops.h> for these because there is no need to
   be atomic.  */
static inline void sigaddset(sigset_t *set, int _sig)
{
	unsigned long sig = _sig - 1;
	if (_NSIG_WORDS == 1)
		set->sig[0] |= 1UL << sig;
	else
		set->sig[sig / _NSIG_BPW] |= 1UL << (sig % _NSIG_BPW);
}

static inline void sigdelset(sigset_t *set, int _sig)
{
	unsigned long sig = _sig - 1;
	if (_NSIG_WORDS == 1)
		set->sig[0] &= ~(1UL << sig);
	else
		set->sig[sig / _NSIG_BPW] &= ~(1UL << (sig % _NSIG_BPW));
}

static inline int sigismember(sigset_t *set, int _sig)
{
	unsigned long sig = _sig - 1;
	if (_NSIG_WORDS == 1)
		return 1 & (set->sig[0] >> sig);
	else
		return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
}

static inline int sigfindinword(unsigned long word)
{
	return ffz(~word);
}

#endif /* __HAVE_ARCH_SIG_BITOPS */

static inline int sigisemptyset(sigset_t *set)
{
	extern void _NSIG_WORDS_is_unsupported_size(void);
	switch (_NSIG_WORDS) {
	case 4:
		return (set->sig[3] | set->sig[2] |
			set->sig[1] | set->sig[0]) == 0;
	case 2:
		return (set->sig[1] | set->sig[0]) == 0;
	case 1:
		return set->sig[0] == 0;
	default:
		_NSIG_WORDS_is_unsupported_size();
		return 0;
	}
}

#define sigmask(sig)	(1UL << ((sig) - 1))

#ifndef __HAVE_ARCH_SIG_SETOPS
#include <linux/string.h>

#define _SIG_SET_BINOP(name, op)					\
static inline void name(sigset_t *r, const sigset_t *a, const sigset_t *b) \
{									\
	extern void _NSIG_WORDS_is_unsupported_size(void);		\
	unsigned long a0, a1, a2, a3, b0, b1, b2, b3;			\
									\
	switch (_NSIG_WORDS) {						\
	    case 4:							\
		a3 = a->sig[3]; a2 = a->sig[2];				\
		b3 = b->sig[3]; b2 = b->sig[2];				\
		r->sig[3] = op(a3, b3);					\
		r->sig[2] = op(a2, b2);					\
	    case 2:							\
		a1 = a->sig[1]; b1 = b->sig[1];				\
		r->sig[1] = op(a1, b1);					\
	    case 1:							\
		a0 = a->sig[0]; b0 = b->sig[0];				\
		r->sig[0] = op(a0, b0);					\
		break;							\
	    default:							\
		_NSIG_WORDS_is_unsupported_size();			\
	}								\
}

#define _sig_or(x,y)	((x) | (y))
_SIG_SET_BINOP(sigorsets, _sig_or)

#define _sig_and(x,y)	((x) & (y))
_SIG_SET_BINOP(sigandsets, _sig_and)

#define _sig_nand(x,y)	((x) & ~(y))
_SIG_SET_BINOP(signandsets, _sig_nand)

#undef _SIG_SET_BINOP
#undef _sig_or
#undef _sig_and
#undef _sig_nand

#define _SIG_SET_OP(name, op)						\
static inline void name(sigset_t *set)					\
{									\
	extern void _NSIG_WORDS_is_unsupported_size(void);		\
									\
	switch (_NSIG_WORDS) {						\
	    case 4: set->sig[3] = op(set->sig[3]);			\
		    set->sig[2] = op(set->sig[2]);			\
	    case 2: set->sig[1] = op(set->sig[1]);			\
	    case 1: set->sig[0] = op(set->sig[0]);			\
		    break;						\
	    default:							\
		_NSIG_WORDS_is_unsupported_size();			\
	}								\
}

#define _sig_not(x)	(~(x))
_SIG_SET_OP(signotset, _sig_not)

#undef _SIG_SET_OP
#undef _sig_not

static inline void sigemptyset(sigset_t *set)
{
	switch (_NSIG_WORDS) {
	default:
		memset(set, 0, sizeof(sigset_t));
		break;
	case 2: set->sig[1] = 0;
	case 1:	set->sig[0] = 0;
		break;
	}
}

static inline void sigfillset(sigset_t *set)
{
	switch (_NSIG_WORDS) {
	default:
		memset(set, -1, sizeof(sigset_t));
		break;
	case 2: set->sig[1] = -1;
	case 1:	set->sig[0] = -1;
		break;
	}
}

/* Some extensions for manipulating the low 32 signals in particular.  */

static inline void sigaddsetmask(sigset_t *set, unsigned long mask)
{
	set->sig[0] |= mask;
}

static inline void sigdelsetmask(sigset_t *set, unsigned long mask)
{
	set->sig[0] &= ~mask;
}

static inline int sigtestsetmask(sigset_t *set, unsigned long mask)
{
	return (set->sig[0] & mask) != 0;
}

static inline void siginitset(sigset_t *set, unsigned long mask)
{
	set->sig[0] = mask;
	switch (_NSIG_WORDS) {
	default:
		memset(&set->sig[1], 0, sizeof(long)*(_NSIG_WORDS-1));
		break;
	case 2: set->sig[1] = 0;
	case 1: ;
	}
}

static inline void siginitsetinv(sigset_t *set, unsigned long mask)
{
	set->sig[0] = ~mask;
	switch (_NSIG_WORDS) {
	default:
		memset(&set->sig[1], -1, sizeof(long)*(_NSIG_WORDS-1));
		break;
	case 2: set->sig[1] = -1;
	case 1: ;
	}
}

#endif /* __HAVE_ARCH_SIG_SETOPS */

static inline void init_sigpending(struct sigpending *sig)
{
	sigemptyset(&sig->signal);
	INIT_LIST_HEAD(&sig->list);
}

extern void flush_sigqueue(struct sigpending *queue);

/* Test if 'sig' is valid signal. Use this instead of testing _NSIG directly */
static inline int valid_signal(unsigned long sig)
{
	return sig <= _NSIG ? 1 : 0;
}

extern int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p);
extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *);
extern long do_sigpending(void __user *, unsigned long);
extern int sigprocmask(int, sigset_t *, sigset_t *);

struct pt_regs;
extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie);

#endif /* __KERNEL__ */

#endif /* _LINUX_SIGNAL_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_SIGNAL_H
	2	#define _LINUX_SIGNAL_H
	3
	4	#include <linux/list.h>
	5	#include <linux/spinlock.h>
	6	#include <asm/signal.h>
	7	#include <asm/siginfo.h>
	8
	9	#ifdef __KERNEL__
	10
7f261b5f SS	11	/*
	12	* These values of sa_flags are used only by the kernel as part of the
	13	* irq handling routines.
	14	*
	15	* SA_INTERRUPT is also used by the irq handling routines.
	16	* SA_SHIRQ is for shared interrupt support on PCI and EISA.
	17	*/
	18	#define SA_PROBE SA_ONESHOT
	19	#define SA_SAMPLE_RANDOM SA_RESTART
	20	#define SA_SHIRQ 0x04000000
9ded96f2 RK	21	/*
	22	* As above, these correspond to the IORESOURCE_IRQ_* defines in
	23	* linux/ioport.h to select the interrupt line behaviour. When
	24	* requesting an interrupt without specifying a SA_TRIGGER, the
	25	* setting should be assumed to be "as already configured", which
	26	* may be as per machine or firmware initialisation.
	27	*/
	28	#define SA_TRIGGER_LOW 0x00000008
	29	#define SA_TRIGGER_HIGH 0x00000004
	30	#define SA_TRIGGER_FALLING 0x00000002
	31	#define SA_TRIGGER_RISING 0x00000001
	32	#define SA_TRIGGER_MASK (SA_TRIGGER_HIGH\|SA_TRIGGER_LOW\|\
	33	SA_TRIGGER_RISING\|SA_TRIGGER_FALLING)
7f261b5f	34
1da177e4 LT	35	/*
	36	* Real Time signals may be queued.
	37	*/
	38
	39	struct sigqueue {
	40	struct list_head list;
1da177e4 LT	41	int flags;
	42	siginfo_t info;
	43	struct user_struct *user;
	44	};
	45
	46	/* flags values. */
	47	#define SIGQUEUE_PREALLOC 1
	48
	49	struct sigpending {
	50	struct list_head list;
	51	sigset_t signal;
	52	};
	53
	54	/*
	55	* Define some primitives to manipulate sigset_t.
	56	*/
	57
	58	#ifndef __HAVE_ARCH_SIG_BITOPS
	59	#include <linux/bitops.h>
	60
	61	/* We don't use <linux/bitops.h> for these because there is no need to
	62	be atomic. */
	63	static inline void sigaddset(sigset_t *set, int _sig)
	64	{
	65	unsigned long sig = _sig - 1;
	66	if (_NSIG_WORDS == 1)
	67	set->sig[0] \|= 1UL << sig;
	68	else
	69	set->sig[sig / _NSIG_BPW] \|= 1UL << (sig % _NSIG_BPW);
	70	}
	71
	72	static inline void sigdelset(sigset_t *set, int _sig)
	73	{
	74	unsigned long sig = _sig - 1;
	75	if (_NSIG_WORDS == 1)
	76	set->sig[0] &= ~(1UL << sig);
	77	else
	78	set->sig[sig / _NSIG_BPW] &= ~(1UL << (sig % _NSIG_BPW));
	79	}
	80
	81	static inline int sigismember(sigset_t *set, int _sig)
	82	{
	83	unsigned long sig = _sig - 1;
	84	if (_NSIG_WORDS == 1)
	85	return 1 & (set->sig[0] >> sig);
	86	else
	87	return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
	88	}
	89
	90	static inline int sigfindinword(unsigned long word)
	91	{
	92	return ffz(~word);
	93	}
	94
	95	#endif /* __HAVE_ARCH_SIG_BITOPS */
	96
71fabd5e GA	97	static inline int sigisemptyset(sigset_t *set)
	98	{
	99	extern void _NSIG_WORDS_is_unsupported_size(void);
	100	switch (_NSIG_WORDS) {
	101	case 4:
	102	return (set->sig[3] \| set->sig[2] \|
	103	set->sig[1] \| set->sig[0]) == 0;
	104	case 2:
	105	return (set->sig[1] \| set->sig[0]) == 0;
	106	case 1:
	107	return set->sig[0] == 0;
	108	default:
	109	_NSIG_WORDS_is_unsupported_size();
	110	return 0;
	111	}
	112	}
	113
1da177e4 LT	114	#define sigmask(sig) (1UL << ((sig) - 1))
	115
	116	#ifndef __HAVE_ARCH_SIG_SETOPS
	117	#include <linux/string.h>
	118
	119	#define _SIG_SET_BINOP(name, op) \
	120	static inline void name(sigset_t r, const sigset_t a, const sigset_t *b) \
	121	{ \
	122	extern void _NSIG_WORDS_is_unsupported_size(void); \
	123	unsigned long a0, a1, a2, a3, b0, b1, b2, b3; \
	124	\
	125	switch (_NSIG_WORDS) { \
	126	case 4: \
	127	a3 = a->sig[3]; a2 = a->sig[2]; \
	128	b3 = b->sig[3]; b2 = b->sig[2]; \
	129	r->sig[3] = op(a3, b3); \
	130	r->sig[2] = op(a2, b2); \
	131	case 2: \
	132	a1 = a->sig[1]; b1 = b->sig[1]; \
	133	r->sig[1] = op(a1, b1); \
	134	case 1: \
	135	a0 = a->sig[0]; b0 = b->sig[0]; \
	136	r->sig[0] = op(a0, b0); \
	137	break; \
	138	default: \
	139	_NSIG_WORDS_is_unsupported_size(); \
	140	} \
	141	}
	142
	143	#define _sig_or(x,y) ((x) \| (y))
	144	_SIG_SET_BINOP(sigorsets, _sig_or)
	145
	146	#define _sig_and(x,y) ((x) & (y))
	147	_SIG_SET_BINOP(sigandsets, _sig_and)
	148
	149	#define _sig_nand(x,y) ((x) & ~(y))
	150	_SIG_SET_BINOP(signandsets, _sig_nand)
	151
	152	#undef _SIG_SET_BINOP
	153	#undef _sig_or
	154	#undef _sig_and
	155	#undef _sig_nand
	156
	157	#define _SIG_SET_OP(name, op) \
	158	static inline void name(sigset_t *set) \
	159	{ \
	160	extern void _NSIG_WORDS_is_unsupported_size(void); \
	161	\
	162	switch (_NSIG_WORDS) { \
	163	case 4: set->sig[3] = op(set->sig[3]); \
	164	set->sig[2] = op(set->sig[2]); \
	165	case 2: set->sig[1] = op(set->sig[1]); \
	166	case 1: set->sig[0] = op(set->sig[0]); \
	167	break; \
	168	default: \
	169	_NSIG_WORDS_is_unsupported_size(); \
	170	} \
	171	}
	172
	173	#define _sig_not(x) (~(x))
	174	_SIG_SET_OP(signotset, _sig_not)
	175
	176	#undef _SIG_SET_OP
	177	#undef _sig_not
178
179	static inline void sigemptyset(sigset_t *set)
180	{
181	switch (_NSIG_WORDS) {
182	default:
183	memset(set, 0, sizeof(sigset_t));
184	break;
185	case 2: set->sig[1] = 0;
186	case 1: set->sig[0] = 0;
187	break;
188	}
189	}
190
191	static inline void sigfillset(sigset_t *set)
192	{
193	switch (_NSIG_WORDS) {
194	default:
195	memset(set, -1, sizeof(sigset_t));
196	break;
197	case 2: set->sig[1] = -1;
198	case 1: set->sig[0] = -1;
199	break;
200	}
201	}
202
203	/* Some extensions for manipulating the low 32 signals in particular. */
204
205	static inline void sigaddsetmask(sigset_t *set, unsigned long mask)
206	{
207	set->sig[0] \|= mask;
208	}
209
210	static inline void sigdelsetmask(sigset_t *set, unsigned long mask)
211	{
212	set->sig[0] &= ~mask;
213	}
214
215	static inline int sigtestsetmask(sigset_t *set, unsigned long mask)
216	{
217	return (set->sig[0] & mask) != 0;
218	}
219
220	static inline void siginitset(sigset_t *set, unsigned long mask)
221	{
222	set->sig[0] = mask;
223	switch (_NSIG_WORDS) {
224	default:
225	memset(&set->sig[1], 0, sizeof(long)*(_NSIG_WORDS-1));
226	break;
227	case 2: set->sig[1] = 0;
228	case 1: ;
229	}
230	}
231
232	static inline void siginitsetinv(sigset_t *set, unsigned long mask)
233	{
234	set->sig[0] = ~mask;
235	switch (_NSIG_WORDS) {
236	default:
237	memset(&set->sig[1], -1, sizeof(long)*(_NSIG_WORDS-1));
238	break;
239	case 2: set->sig[1] = -1;
240	case 1: ;
241	}
242	}
243
244	#endif /* __HAVE_ARCH_SIG_SETOPS */
245
246	static inline void init_sigpending(struct sigpending *sig)
247	{
248	sigemptyset(&sig->signal);
249	INIT_LIST_HEAD(&sig->list);
250	}
251
6a14c5c9 ON	252	extern void flush_sigqueue(struct sigpending *queue);
6a14c5c9 ON	253
e5bdd883 JJ	254	/* Test if 'sig' is valid signal. Use this instead of testing _NSIG directly */
	255	static inline int valid_signal(unsigned long sig)
	256	{
	257	return sig <= _NSIG ? 1 : 0;
	258	}
	259
1da177e4 LT	260	extern int group_send_sig_info(int sig, struct siginfo info, struct task_struct p);
	261	extern int __group_send_sig_info(int, struct siginfo , struct task_struct );
	262	extern long do_sigpending(void __user *, unsigned long);
	263	extern int sigprocmask(int, sigset_t , sigset_t );
	264
1da177e4 LT	265	struct pt_regs;
1da177e4 LT	266	extern int get_signal_to_deliver(siginfo_t info, struct k_sigaction return_ka, struct pt_regs regs, void cookie);
1da177e4 LT	267
	268	#endif /* __KERNEL__ */
	269
	270	#endif /* _LINUX_SIGNAL_H */