1#ifndef __ASM_COMPAT_SIGNAL_H
2#define __ASM_COMPAT_SIGNAL_H
3
4#include <linux/bug.h>
5#include <linux/compat.h>
6#include <linux/compiler.h>
7
8#include <asm/signal.h>
9#include <asm/siginfo.h>
10
11#include <asm/uaccess.h>
12
13#define SI_PAD_SIZE32   ((SI_MAX_SIZE/sizeof(int)) - 3)
14
15typedef struct compat_siginfo {
16	int si_signo;
17	int si_code;
18	int si_errno;
19
20	union {
21		int _pad[SI_PAD_SIZE32];
22
23		/* kill() */
24		struct {
25			compat_pid_t _pid;	/* sender's pid */
26			compat_uid_t _uid;	/* sender's uid */
27		} _kill;
28
29		/* SIGCHLD */
30		struct {
31			compat_pid_t _pid;	/* which child */
32			compat_uid_t _uid;	/* sender's uid */
33			int _status;		/* exit code */
34			compat_clock_t _utime;
35			compat_clock_t _stime;
36		} _sigchld;
37
38		/* IRIX SIGCHLD */
39		struct {
40			compat_pid_t _pid;	/* which child */
41			compat_clock_t _utime;
42			int _status;		/* exit code */
43			compat_clock_t _stime;
44		} _irix_sigchld;
45
46		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
47		struct {
48			s32 _addr; /* faulting insn/memory ref. */
49		} _sigfault;
50
51		/* SIGPOLL, SIGXFSZ (To do ...)  */
52		struct {
53			int _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
54			int _fd;
55		} _sigpoll;
56
57		/* POSIX.1b timers */
58		struct {
59			timer_t _tid;		/* timer id */
60			int _overrun;		/* overrun count */
61			compat_sigval_t _sigval;/* same as below */
62			int _sys_private;       /* not to be passed to user */
63		} _timer;
64
65		/* POSIX.1b signals */
66		struct {
67			compat_pid_t _pid;	/* sender's pid */
68			compat_uid_t _uid;	/* sender's uid */
69			compat_sigval_t _sigval;
70		} _rt;
71
72	} _sifields;
73} compat_siginfo_t;
74
75static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d,
76	const sigset_t *s)
77{
78	int err;
79
80	BUG_ON(sizeof(*d) != sizeof(*s));
81	BUG_ON(_NSIG_WORDS != 2);
82
83	err  = __put_user(s->sig[0],       &d->sig[0]);
84	err |= __put_user(s->sig[0] >> 32, &d->sig[1]);
85	err |= __put_user(s->sig[1],       &d->sig[2]);
86	err |= __put_user(s->sig[1] >> 32, &d->sig[3]);
87
88	return err;
89}
90
91static inline int __copy_conv_sigset_from_user(sigset_t *d,
92	const compat_sigset_t __user *s)
93{
94	int err;
95	union sigset_u {
96		sigset_t	s;
97		compat_sigset_t c;
98	} *u = (union sigset_u *) d;
99
100	BUG_ON(sizeof(*d) != sizeof(*s));
101	BUG_ON(_NSIG_WORDS != 2);
102
103#ifdef CONFIG_CPU_BIG_ENDIAN
104	err  = __get_user(u->c.sig[1], &s->sig[0]);
105	err |= __get_user(u->c.sig[0], &s->sig[1]);
106	err |= __get_user(u->c.sig[3], &s->sig[2]);
107	err |= __get_user(u->c.sig[2], &s->sig[3]);
108#endif
109#ifdef CONFIG_CPU_LITTLE_ENDIAN
110	err  = __get_user(u->c.sig[0], &s->sig[0]);
111	err |= __get_user(u->c.sig[1], &s->sig[1]);
112	err |= __get_user(u->c.sig[2], &s->sig[2]);
113	err |= __get_user(u->c.sig[3], &s->sig[3]);
114#endif
115
116	return err;
117}
118
119#endif /* __ASM_COMPAT_SIGNAL_H */
120