[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>

#include <asm-generic/compat.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_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_dev_t;
typedef s16		compat_nlink_t;
typedef u16		compat_ipc_pid_t;
typedef u32		compat_caddr_t;
typedef __kernel_fsid_t	compat_fsid_t;
typedef s64		compat_s64;
typedef u64		compat_u64;

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;
	old_time32_t	st_atime;
	u32		st_atime_nsec;
	old_time32_t	st_mtime;
	u32		st_mtime_nsec;
	old_time32_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
fb373975 AB	11	#include <asm-generic/compat.h>
fb373975 AB	12
e28cbf22	13	#define COMPAT_USER_HZ 100
422b9b96	14	#ifdef __BIG_ENDIAN__
e28cbf22	15	#define COMPAT_UTS_MACHINE "ppc\0\0"
422b9b96 AB	16	#else
	17	#define COMPAT_UTS_MACHINE "ppcle\0\0"
	18	#endif
1da177e4	19
202e5979 SR	20	typedef u32 __compat_uid_t;
	21	typedef u32 __compat_gid_t;
	22	typedef u32 __compat_uid32_t;
	23	typedef u32 __compat_gid32_t;
1da177e4	24	typedef u32 compat_mode_t;
1da177e4	25	typedef u32 compat_dev_t;
1da177e4 LT	26	typedef s16 compat_nlink_t;
1da177e4 LT	27	typedef u16 compat_ipc_pid_t;
1da177e4 LT	28	typedef u32 compat_caddr_t;
1da177e4 LT	29	typedef __kernel_fsid_t compat_fsid_t;
4b777587	30	typedef s64 compat_s64;
4b777587	31	typedef u64 compat_u64;
1da177e4	32
1da177e4 LT	33	struct compat_stat {
	34	compat_dev_t st_dev;
	35	compat_ino_t st_ino;
	36	compat_mode_t st_mode;
8882a4da	37	compat_nlink_t st_nlink;
202e5979 SR	38	__compat_uid32_t st_uid;
202e5979 SR	39	__compat_gid32_t st_gid;
1da177e4 LT	40	compat_dev_t st_rdev;
	41	compat_off_t st_size;
	42	compat_off_t st_blksize;
	43	compat_off_t st_blocks;
9afc5eee	44	old_time32_t st_atime;
1da177e4	45	u32 st_atime_nsec;
9afc5eee	46	old_time32_t st_mtime;
1da177e4	47	u32 st_mtime_nsec;
9afc5eee	48	old_time32_t st_ctime;
1da177e4 LT	49	u32 st_ctime_nsec;
	50	u32 __unused4[2];
	51	};
	52
	53	struct compat_flock {
	54	short l_type;
	55	short l_whence;
	56	compat_off_t l_start;
	57	compat_off_t l_len;
	58	compat_pid_t l_pid;
	59	};
	60
	61	#define F_GETLK64 12 /* using 'struct flock64' */
	62	#define F_SETLK64 13
	63	#define F_SETLKW64 14
	64
	65	struct compat_flock64 {
	66	short l_type;
	67	short l_whence;
	68	compat_loff_t l_start;
	69	compat_loff_t l_len;
	70	compat_pid_t l_pid;
	71	};
	72
	73	struct compat_statfs {
	74	int f_type;
	75	int f_bsize;
	76	int f_blocks;
	77	int f_bfree;
	78	int f_bavail;
	79	int f_files;
	80	int f_ffree;
	81	compat_fsid_t f_fsid;
	82	int f_namelen; /* SunOS ignores this field. */
	83	int f_frsize;
1448c721 EB	84	int f_flags;
1448c721 EB	85	int f_spare[4];
1da177e4 LT	86	};
1da177e4 LT	87
1da177e4 LT	88	#define COMPAT_RLIM_INFINITY 0xffffffff
	89
	90	typedef u32 compat_old_sigset_t;
	91
	92	#define _COMPAT_NSIG 64
	93	#define _COMPAT_NSIG_BPW 32
	94
	95	typedef u32 compat_sigset_word;
	96
	97	#define COMPAT_OFF_T_MAX 0x7fffffff
1da177e4 LT	98
	99	/*
	100	* A pointer passed in from user mode. This should not
	101	* be used for syscall parameters, just declare them
	102	* as pointers because the syscall entry code will have
8b3de0df	103	* appropriately converted them already.
1da177e4	104	*/
1da177e4 LT	105
	106	static inline void __user *compat_ptr(compat_uptr_t uptr)
	107	{
	108	return (void __user *)(unsigned long)uptr;
	109	}
	110
29e646df AV	111	static inline compat_uptr_t ptr_to_compat(void __user *uptr)
	112	{
	113	return (u32)(unsigned long)uptr;
	114	}
	115
c41d68a5	116	static inline void __user *arch_compat_alloc_user_space(long len)
1da177e4 LT	117	{
	118	struct pt_regs *regs = current->thread.regs;
	119	unsigned long usp = regs->gpr[1];
	120
	121	/*
25985edc	122	* We can't access below the stack pointer in the 32bit ABI and
573ebfa6 PM	123	* can access 288 bytes in the 64bit big-endian ABI,
573ebfa6 PM	124	* or 512 bytes with the new ELFv2 little-endian ABI.
1da177e4	125	*/
cab175f9	126	if (!is_32bit_task())
573ebfa6	127	usp -= USER_REDZONE_SIZE;
1da177e4 LT	128
	129	return (void __user *) (usp - len);
	130	}
	131
	132	/*
	133	* ipc64_perm is actually 32/64bit clean but since the compat layer refers to
	134	* it we may as well define it.
	135	*/
	136	struct compat_ipc64_perm {
	137	compat_key_t key;
202e5979 SR	138	__compat_uid_t uid;
	139	__compat_gid_t gid;
	140	__compat_uid_t cuid;
	141	__compat_gid_t cgid;
1da177e4 LT	142	compat_mode_t mode;
	143	unsigned int seq;
	144	unsigned int __pad2;
	145	unsigned long __unused1; /* yes they really are 64bit pads */
	146	unsigned long __unused2;
	147	};
	148
	149	struct compat_semid64_ds {
	150	struct compat_ipc64_perm sem_perm;
d0b67de9 AB	151	unsigned int sem_otime_high;
	152	unsigned int sem_otime;
	153	unsigned int sem_ctime_high;
	154	unsigned int sem_ctime;
1da177e4 LT	155	compat_ulong_t sem_nsems;
	156	compat_ulong_t __unused3;
	157	compat_ulong_t __unused4;
	158	};
	159
	160	struct compat_msqid64_ds {
	161	struct compat_ipc64_perm msg_perm;
d0b67de9 AB	162	unsigned int msg_stime_high;
	163	unsigned int msg_stime;
	164	unsigned int msg_rtime_high;
	165	unsigned int msg_rtime;
	166	unsigned int msg_ctime_high;
	167	unsigned int msg_ctime;
1da177e4 LT	168	compat_ulong_t msg_cbytes;
	169	compat_ulong_t msg_qnum;
	170	compat_ulong_t msg_qbytes;
	171	compat_pid_t msg_lspid;
	172	compat_pid_t msg_lrpid;
	173	compat_ulong_t __unused4;
	174	compat_ulong_t __unused5;
	175	};
	176
	177	struct compat_shmid64_ds {
	178	struct compat_ipc64_perm shm_perm;
d0b67de9 AB	179	unsigned int shm_atime_high;
	180	unsigned int shm_atime;
	181	unsigned int shm_dtime_high;
	182	unsigned int shm_dtime;
	183	unsigned int shm_ctime_high;
	184	unsigned int shm_ctime;
1da177e4 LT	185	unsigned int __unused4;
	186	compat_size_t shm_segsz;
	187	compat_pid_t shm_cpid;
	188	compat_pid_t shm_lpid;
	189	compat_ulong_t shm_nattch;
	190	compat_ulong_t __unused5;
	191	compat_ulong_t __unused6;
	192	};
	193
5b101740 RM	194	static inline int is_compat_task(void)
5b101740 RM	195	{
cab175f9	196	return is_32bit_task();
5b101740 RM	197	}
5b101740 RM	198
88ced031	199	#endif /* __KERNEL__ */
8882a4da	200	#endif /* _ASM_POWERPC_COMPAT_H */