xref: /kernel/linux/linux-5.10/arch/sparc/include/asm/compat.h (revision 8c2ecf20)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_SPARC64_COMPAT_H
#define _ASM_SPARC64_COMPAT_H
/*
 * Architecture specific compatibility types
 */
#include <linux/types.h>

#include <asm-generic/compat.h>

#define COMPAT_USER_HZ		100
#define COMPAT_UTS_MACHINE	"sparc\0\0"

typedef u16		__compat_uid_t;
typedef u16		__compat_gid_t;
typedef u32		__compat_uid32_t;
typedef u32		__compat_gid32_t;
typedef u16		compat_mode_t;
typedef u16		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;

struct compat_stat {
	compat_dev_t	st_dev;
	compat_ino_t	st_ino;
	compat_mode_t	st_mode;
	compat_nlink_t	st_nlink;
	__compat_uid_t	st_uid;
	__compat_gid_t	st_gid;
	compat_dev_t	st_rdev;
	compat_off_t	st_size;
	old_time32_t	st_atime;
	compat_ulong_t	st_atime_nsec;
	old_time32_t	st_mtime;
	compat_ulong_t	st_mtime_nsec;
	old_time32_t	st_ctime;
	compat_ulong_t	st_ctime_nsec;
	compat_off_t	st_blksize;
	compat_off_t	st_blocks;
	u32		__unused4[2];
};

struct compat_stat64 {
	unsigned long long	st_dev;

	unsigned long long	st_ino;

	unsigned int	st_mode;
	unsigned int	st_nlink;

	unsigned int	st_uid;
	unsigned int	st_gid;

	unsigned long long	st_rdev;

	unsigned char	__pad3[8];

	long long	st_size;
	unsigned int	st_blksize;

	unsigned char	__pad4[8];
	unsigned int	st_blocks;

	unsigned int	st_atime;
	unsigned int	st_atime_nsec;

	unsigned int	st_mtime;
	unsigned int	st_mtime_nsec;

	unsigned int	st_ctime;
	unsigned int	st_ctime_nsec;

	unsigned int	__unused4;
	unsigned int	__unused5;
};

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

#define F_GETLK64	12
#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;
	short		__unused;
};

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 0x7fffffff

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

#ifdef CONFIG_COMPAT
static inline void __user *arch_compat_alloc_user_space(long len)
{
	struct pt_regs *regs = current_thread_info()->kregs;
	unsigned long usp = regs->u_regs[UREG_I6];

	if (test_thread_64bit_stack(usp))
		usp += STACK_BIAS;

	if (test_thread_flag(TIF_32BIT))
		usp &= 0xffffffffUL;

	usp -= len;
	usp &= ~0x7UL;

	return (void __user *) usp;
}
#endif

struct compat_ipc64_perm {
	compat_key_t key;
	__compat_uid32_t uid;
	__compat_gid32_t gid;
	__compat_uid32_t cuid;
	__compat_gid32_t cgid;
	unsigned short __pad1;
	compat_mode_t mode;
	unsigned short __pad2;
	unsigned short seq;
	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;
	u32		sem_nsems;
	u32		__unused1;
	u32		__unused2;
};

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;
	unsigned int	msg_cbytes;
	unsigned int	msg_qnum;
	unsigned int	msg_qbytes;
	compat_pid_t	msg_lspid;
	compat_pid_t	msg_lrpid;
	unsigned int	__unused1;
	unsigned int	__unused2;
};

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;
	compat_size_t	shm_segsz;
	compat_pid_t	shm_cpid;
	compat_pid_t	shm_lpid;
	unsigned int	shm_nattch;
	unsigned int	__unused1;
	unsigned int	__unused2;
};

#ifdef CONFIG_COMPAT
static inline int is_compat_task(void)
{
	return test_thread_flag(TIF_32BIT);
}

static inline bool in_compat_syscall(void)
{
	/* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
	return pt_regs_trap_type(current_pt_regs()) == 0x110;
}
#define in_compat_syscall in_compat_syscall
#endif

#endif /* _ASM_SPARC64_COMPAT_H */