[linux-2.6-block.git] / arch / powerpc / include / asm / compat.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_COMPAT_H
#define _ASM_POWERPC_COMPAT_H
#ifdef __KERNEL__
/*
 * Architecture specific compatibility types
 */
#include <linux/types.h>
#include <linux/sched.h>

#define COMPAT_USER_HZ		100
#ifdef __BIG_ENDIAN__
#define COMPAT_UTS_MACHINE	"ppc\0\0"
#else
#define COMPAT_UTS_MACHINE	"ppcle\0\0"
#endif

typedef u32		compat_size_t;
typedef s32		compat_ssize_t;
typedef s32		compat_clock_t;
typedef s32		compat_pid_t;
typedef u32		__compat_uid_t;
typedef u32		__compat_gid_t;
typedef u32		__compat_uid32_t;
typedef u32		__compat_gid32_t;
typedef u32		compat_mode_t;
typedef u32		compat_ino_t;
typedef u32		compat_dev_t;
typedef s32		compat_off_t;
typedef s64		compat_loff_t;
typedef s16		compat_nlink_t;
typedef u16		compat_ipc_pid_t;
typedef s32		compat_daddr_t;
typedef u32		compat_caddr_t;
typedef __kernel_fsid_t	compat_fsid_t;
typedef s32		compat_key_t;
typedef s32		compat_timer_t;

typedef s32		compat_int_t;
typedef s32		compat_long_t;
typedef s64		compat_s64;
typedef u32		compat_uint_t;
typedef u32		compat_ulong_t;
typedef u64		compat_u64;
typedef u32		compat_uptr_t;

struct compat_stat {
	compat_dev_t	st_dev;
	compat_ino_t	st_ino;
	compat_mode_t	st_mode;
	compat_nlink_t	st_nlink;
	__compat_uid32_t	st_uid;
	__compat_gid32_t	st_gid;
	compat_dev_t	st_rdev;
	compat_off_t	st_size;
	compat_off_t	st_blksize;
	compat_off_t	st_blocks;
	compat_time_t	st_atime;
	u32		st_atime_nsec;
	compat_time_t	st_mtime;
	u32		st_mtime_nsec;
	compat_time_t	st_ctime;
	u32		st_ctime_nsec;
	u32		__unused4[2];
};

struct compat_flock {
	short		l_type;
	short		l_whence;
	compat_off_t	l_start;
	compat_off_t	l_len;
	compat_pid_t	l_pid;
};

#define F_GETLK64	12	/*  using 'struct flock64' */
#define F_SETLK64	13
#define F_SETLKW64	14

struct compat_flock64 {
	short		l_type;
	short		l_whence;
	compat_loff_t	l_start;
	compat_loff_t	l_len;
	compat_pid_t	l_pid;
};

struct compat_statfs {
	int		f_type;
	int		f_bsize;
	int		f_blocks;
	int		f_bfree;
	int		f_bavail;
	int		f_files;
	int		f_ffree;
	compat_fsid_t	f_fsid;
	int		f_namelen;	/* SunOS ignores this field. */
	int		f_frsize;
	int		f_flags;
	int		f_spare[4];
};

#define COMPAT_RLIM_INFINITY		0xffffffff

typedef u32		compat_old_sigset_t;

#define _COMPAT_NSIG		64
#define _COMPAT_NSIG_BPW	32

typedef u32		compat_sigset_word;

#define COMPAT_OFF_T_MAX	0x7fffffff

/*
 * A pointer passed in from user mode. This should not
 * be used for syscall parameters, just declare them
 * as pointers because the syscall entry code will have
 * appropriately converted them already.
 */

static inline void __user *compat_ptr(compat_uptr_t uptr)
{
	return (void __user *)(unsigned long)uptr;
}

static inline compat_uptr_t ptr_to_compat(void __user *uptr)
{
	return (u32)(unsigned long)uptr;
}

static inline void __user *arch_compat_alloc_user_space(long len)
{
	struct pt_regs *regs = current->thread.regs;
	unsigned long usp = regs->gpr[1];

	/*
	 * We can't access below the stack pointer in the 32bit ABI and
	 * can access 288 bytes in the 64bit big-endian ABI,
	 * or 512 bytes with the new ELFv2 little-endian ABI.
	 */
	if (!is_32bit_task())
		usp -= USER_REDZONE_SIZE;

	return (void __user *) (usp - len);
}

/*
 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
 * it we may as well define it.
 */
struct compat_ipc64_perm {
	compat_key_t key;
	__compat_uid_t uid;
	__compat_gid_t gid;
	__compat_uid_t cuid;
	__compat_gid_t cgid;
	compat_mode_t mode;
	unsigned int seq;
	unsigned int __pad2;
	unsigned long __unused1;	/* yes they really are 64bit pads */
	unsigned long __unused2;
};

struct compat_semid64_ds {
	struct compat_ipc64_perm sem_perm;
	unsigned int sem_otime_high;
	unsigned int sem_otime;
	unsigned int sem_ctime_high;
	unsigned int sem_ctime;
	compat_ulong_t sem_nsems;
	compat_ulong_t __unused3;
	compat_ulong_t __unused4;
};

struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	unsigned int msg_stime_high;
	unsigned int msg_stime;
	unsigned int msg_rtime_high;
	unsigned int msg_rtime;
	unsigned int msg_ctime_high;
	unsigned int msg_ctime;
	compat_ulong_t msg_cbytes;
	compat_ulong_t msg_qnum;
	compat_ulong_t msg_qbytes;
	compat_pid_t msg_lspid;
	compat_pid_t msg_lrpid;
	compat_ulong_t __unused4;
	compat_ulong_t __unused5;
};

struct compat_shmid64_ds {
	struct compat_ipc64_perm shm_perm;
	unsigned int shm_atime_high;
	unsigned int shm_atime;
	unsigned int shm_dtime_high;
	unsigned int shm_dtime;
	unsigned int shm_ctime_high;
	unsigned int shm_ctime;
	unsigned int __unused4;
	compat_size_t shm_segsz;
	compat_pid_t shm_cpid;
	compat_pid_t shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused5;
	compat_ulong_t __unused6;
};

static inline int is_compat_task(void)
{
	return is_32bit_task();
}

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_COMPAT_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
8882a4da DG	2	#ifndef _ASM_POWERPC_COMPAT_H
8882a4da DG	3	#define _ASM_POWERPC_COMPAT_H
88ced031	4	#ifdef __KERNEL__
1da177e4 LT	5	/*
	6	* Architecture specific compatibility types
	7	*/
	8	#include <linux/types.h>
	9	#include <linux/sched.h>
	10
e28cbf22	11	#define COMPAT_USER_HZ 100
422b9b96	12	#ifdef __BIG_ENDIAN__
e28cbf22	13	#define COMPAT_UTS_MACHINE "ppc\0\0"
422b9b96 AB	14	#else
	15	#define COMPAT_UTS_MACHINE "ppcle\0\0"
	16	#endif
1da177e4 LT	17
	18	typedef u32 compat_size_t;
	19	typedef s32 compat_ssize_t;
1da177e4 LT	20	typedef s32 compat_clock_t;
1da177e4 LT	21	typedef s32 compat_pid_t;
202e5979 SR	22	typedef u32 __compat_uid_t;
	23	typedef u32 __compat_gid_t;
	24	typedef u32 __compat_uid32_t;
	25	typedef u32 __compat_gid32_t;
1da177e4 LT	26	typedef u32 compat_mode_t;
	27	typedef u32 compat_ino_t;
	28	typedef u32 compat_dev_t;
	29	typedef s32 compat_off_t;
	30	typedef s64 compat_loff_t;
	31	typedef s16 compat_nlink_t;
	32	typedef u16 compat_ipc_pid_t;
	33	typedef s32 compat_daddr_t;
	34	typedef u32 compat_caddr_t;
	35	typedef __kernel_fsid_t compat_fsid_t;
	36	typedef s32 compat_key_t;
0d77e5a2	37	typedef s32 compat_timer_t;
1da177e4 LT	38
	39	typedef s32 compat_int_t;
	40	typedef s32 compat_long_t;
4b777587	41	typedef s64 compat_s64;
1da177e4 LT	42	typedef u32 compat_uint_t;
1da177e4 LT	43	typedef u32 compat_ulong_t;
4b777587	44	typedef u64 compat_u64;
751f409d	45	typedef u32 compat_uptr_t;
1da177e4	46
1da177e4 LT	47	struct compat_stat {
	48	compat_dev_t st_dev;
	49	compat_ino_t st_ino;
	50	compat_mode_t st_mode;
8882a4da	51	compat_nlink_t st_nlink;
202e5979 SR	52	__compat_uid32_t st_uid;
202e5979 SR	53	__compat_gid32_t st_gid;
1da177e4 LT	54	compat_dev_t st_rdev;
	55	compat_off_t st_size;
	56	compat_off_t st_blksize;
	57	compat_off_t st_blocks;
	58	compat_time_t st_atime;
	59	u32 st_atime_nsec;
	60	compat_time_t st_mtime;
	61	u32 st_mtime_nsec;
	62	compat_time_t st_ctime;
	63	u32 st_ctime_nsec;
	64	u32 __unused4[2];
	65	};
	66
	67	struct compat_flock {
	68	short l_type;
	69	short l_whence;
	70	compat_off_t l_start;
	71	compat_off_t l_len;
	72	compat_pid_t l_pid;
	73	};
	74
	75	#define F_GETLK64 12 /* using 'struct flock64' */
	76	#define F_SETLK64 13
	77	#define F_SETLKW64 14
	78
	79	struct compat_flock64 {
	80	short l_type;
	81	short l_whence;
	82	compat_loff_t l_start;
	83	compat_loff_t l_len;
	84	compat_pid_t l_pid;
	85	};
	86
	87	struct compat_statfs {
	88	int f_type;
	89	int f_bsize;
	90	int f_blocks;
	91	int f_bfree;
	92	int f_bavail;
	93	int f_files;
	94	int f_ffree;
	95	compat_fsid_t f_fsid;
	96	int f_namelen; /* SunOS ignores this field. */
	97	int f_frsize;
1448c721 EB	98	int f_flags;
1448c721 EB	99	int f_spare[4];
1da177e4 LT	100	};
1da177e4 LT	101
1da177e4 LT	102	#define COMPAT_RLIM_INFINITY 0xffffffff
	103
	104	typedef u32 compat_old_sigset_t;
	105
	106	#define _COMPAT_NSIG 64
	107	#define _COMPAT_NSIG_BPW 32
	108
	109	typedef u32 compat_sigset_word;
	110
	111	#define COMPAT_OFF_T_MAX 0x7fffffff
1da177e4 LT	112
	113	/*
	114	* A pointer passed in from user mode. This should not
	115	* be used for syscall parameters, just declare them
	116	* as pointers because the syscall entry code will have
8b3de0df	117	* appropriately converted them already.
1da177e4	118	*/
1da177e4 LT	119
	120	static inline void __user *compat_ptr(compat_uptr_t uptr)
	121	{
	122	return (void __user *)(unsigned long)uptr;
	123	}
	124
29e646df AV	125	static inline compat_uptr_t ptr_to_compat(void __user *uptr)
	126	{
	127	return (u32)(unsigned long)uptr;
	128	}
	129
c41d68a5	130	static inline void __user *arch_compat_alloc_user_space(long len)
1da177e4 LT	131	{
	132	struct pt_regs *regs = current->thread.regs;
	133	unsigned long usp = regs->gpr[1];
	134
	135	/*
25985edc	136	* We can't access below the stack pointer in the 32bit ABI and
573ebfa6 PM	137	* can access 288 bytes in the 64bit big-endian ABI,
573ebfa6 PM	138	* or 512 bytes with the new ELFv2 little-endian ABI.
1da177e4	139	*/
cab175f9	140	if (!is_32bit_task())
573ebfa6	141	usp -= USER_REDZONE_SIZE;
1da177e4 LT	142
	143	return (void __user *) (usp - len);
	144	}
	145
	146	/*
	147	* ipc64_perm is actually 32/64bit clean but since the compat layer refers to
	148	* it we may as well define it.
	149	*/
	150	struct compat_ipc64_perm {
	151	compat_key_t key;
202e5979 SR	152	__compat_uid_t uid;
	153	__compat_gid_t gid;
	154	__compat_uid_t cuid;
	155	__compat_gid_t cgid;
1da177e4 LT	156	compat_mode_t mode;
	157	unsigned int seq;
	158	unsigned int __pad2;
	159	unsigned long __unused1; /* yes they really are 64bit pads */
	160	unsigned long __unused2;
	161	};
	162
	163	struct compat_semid64_ds {
	164	struct compat_ipc64_perm sem_perm;
d0b67de9 AB	165	unsigned int sem_otime_high;
	166	unsigned int sem_otime;
	167	unsigned int sem_ctime_high;
	168	unsigned int sem_ctime;
1da177e4 LT	169	compat_ulong_t sem_nsems;
	170	compat_ulong_t __unused3;
	171	compat_ulong_t __unused4;
	172	};
	173
	174	struct compat_msqid64_ds {
	175	struct compat_ipc64_perm msg_perm;
d0b67de9 AB	176	unsigned int msg_stime_high;
	177	unsigned int msg_stime;
	178	unsigned int msg_rtime_high;
	179	unsigned int msg_rtime;
	180	unsigned int msg_ctime_high;
	181	unsigned int msg_ctime;
1da177e4 LT	182	compat_ulong_t msg_cbytes;
	183	compat_ulong_t msg_qnum;
	184	compat_ulong_t msg_qbytes;
	185	compat_pid_t msg_lspid;
	186	compat_pid_t msg_lrpid;
	187	compat_ulong_t __unused4;
	188	compat_ulong_t __unused5;
	189	};
	190
	191	struct compat_shmid64_ds {
	192	struct compat_ipc64_perm shm_perm;
d0b67de9 AB	193	unsigned int shm_atime_high;
	194	unsigned int shm_atime;
	195	unsigned int shm_dtime_high;
	196	unsigned int shm_dtime;
	197	unsigned int shm_ctime_high;
	198	unsigned int shm_ctime;
1da177e4 LT	199	unsigned int __unused4;
	200	compat_size_t shm_segsz;
	201	compat_pid_t shm_cpid;
	202	compat_pid_t shm_lpid;
	203	compat_ulong_t shm_nattch;
	204	compat_ulong_t __unused5;
	205	compat_ulong_t __unused6;
	206	};
	207
5b101740 RM	208	static inline int is_compat_task(void)
5b101740 RM	209	{
cab175f9	210	return is_32bit_task();
5b101740 RM	211	}
5b101740 RM	212
88ced031	213	#endif /* __KERNEL__ */
8882a4da	214	#endif /* _ASM_POWERPC_COMPAT_H */