arch/arm64/include/asm/compat.h - arm/linux-arm-legacy - Git at Google

 /*
  * Copyright (C) 2012 ARM Ltd.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #ifndef __ASM_COMPAT_H
 #define __ASM_COMPAT_H
 #ifdef __KERNEL__
 #ifdef CONFIG_COMPAT

 /*
  * Architecture specific compatibility types
  */
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/ptrace.h>

 #define COMPAT_USER_HZ		100
 #ifdef __AARCH64EB__
 #define COMPAT_UTS_MACHINE	"armv8b\0\0"
 #else
 #define COMPAT_UTS_MACHINE	"armv8l\0\0"
 #endif

 typedef u32		compat_size_t;
 typedef s32		compat_ssize_t;
 typedef s32		compat_time_t;
 typedef s32		compat_clock_t;
 typedef s32		compat_pid_t;
 typedef u32		__compat_uid_t;
 typedef u32		__compat_gid_t;
 typedef u16		__compat_uid16_t;
 typedef u16		__compat_gid16_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u16		compat_mode_t;
 typedef u32		compat_ino_t;
 typedef u32		compat_dev_t;
 typedef s32		compat_off_t;
 typedef s64		compat_loff_t;
 typedef s32		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 s16		compat_short_t;
 typedef s32		compat_int_t;
 typedef s32		compat_long_t;
 typedef s64		compat_s64;
 typedef u16		compat_ushort_t;
 typedef u32		compat_uint_t;
 typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
 typedef u32		compat_uptr_t;

 struct compat_timespec {
 	compat_time_t	tv_sec;
 	s32		tv_nsec;
 };

 struct compat_timeval {
 	compat_time_t	tv_sec;
 	s32		tv_usec;
 };

 struct compat_stat {
 #ifdef __AARCH64EB__
 	short		st_dev;
 	short		__pad1;
 #else
 	compat_dev_t	st_dev;
 #endif
 	compat_ino_t	st_ino;
 	compat_mode_t	st_mode;
 	compat_ushort_t	st_nlink;
 	__compat_uid16_t	st_uid;
 	__compat_gid16_t	st_gid;
 #ifdef __AARCH64EB__
 	short		st_rdev;
 	short		__pad2;
 #else
 	compat_dev_t	st_rdev;
 #endif
 	compat_off_t	st_size;
 	compat_off_t	st_blksize;
 	compat_off_t	st_blocks;
 	compat_time_t	st_atime;
 	compat_ulong_t	st_atime_nsec;
 	compat_time_t	st_mtime;
 	compat_ulong_t	st_mtime_nsec;
 	compat_time_t	st_ctime;
 	compat_ulong_t	st_ctime_nsec;
 	compat_ulong_t	__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;

 typedef union compat_sigval {
 	compat_int_t	sival_int;
 	compat_uptr_t	sival_ptr;
 } compat_sigval_t;

 typedef struct compat_siginfo {
 	int si_signo;
 	int si_errno;
 	int si_code;

 	union {
 		/* The padding is the same size as AArch64. */
 		int _pad[128/sizeof(int) - 3];

 		/* kill() */
 		struct {
 			compat_pid_t _pid;	/* sender's pid */
 			__compat_uid32_t _uid;	/* sender's uid */
 		} _kill;

 		/* POSIX.1b timers */
 		struct {
 			compat_timer_t _tid;	/* timer id */
 			int _overrun;		/* overrun count */
 			compat_sigval_t _sigval;	/* same as below */
 			int _sys_private;       /* not to be passed to user */
 		} _timer;

 		/* POSIX.1b signals */
 		struct {
 			compat_pid_t _pid;	/* sender's pid */
 			__compat_uid32_t _uid;	/* sender's uid */
 			compat_sigval_t _sigval;
 		} _rt;

 		/* SIGCHLD */
 		struct {
 			compat_pid_t _pid;	/* which child */
 			__compat_uid32_t _uid;	/* sender's uid */
 			int _status;		/* exit code */
 			compat_clock_t _utime;
 			compat_clock_t _stime;
 		} _sigchld;

 		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 		struct {
 			compat_uptr_t _addr; /* faulting insn/memory ref. */
 			short _addr_lsb; /* LSB of the reported address */
 		} _sigfault;

 		/* SIGPOLL */
 		struct {
 			compat_long_t _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
 			int _fd;
 		} _sigpoll;
 	} _sifields;
 } compat_siginfo_t;

 #define COMPAT_OFF_T_MAX	0x7fffffff
 #define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL

 /*
  * 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;
 }

 #define compat_user_stack_pointer() (user_stack_pointer(current_pt_regs()))

 static inline void __user *arch_compat_alloc_user_space(long len)
 {
 	return (void __user *)compat_user_stack_pointer() - len;
 }

 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 mode;
 	unsigned short __pad1;
 	unsigned short seq;
 	unsigned short __pad2;
 	compat_ulong_t unused1;
 	compat_ulong_t unused2;
 };

 struct compat_semid64_ds {
 	struct compat_ipc64_perm sem_perm;
 	compat_time_t  sem_otime;
 	compat_ulong_t __unused1;
 	compat_time_t  sem_ctime;
 	compat_ulong_t __unused2;
 	compat_ulong_t sem_nsems;
 	compat_ulong_t __unused3;
 	compat_ulong_t __unused4;
 };

 struct compat_msqid64_ds {
 	struct compat_ipc64_perm msg_perm;
 	compat_time_t  msg_stime;
 	compat_ulong_t __unused1;
 	compat_time_t  msg_rtime;
 	compat_ulong_t __unused2;
 	compat_time_t  msg_ctime;
 	compat_ulong_t __unused3;
 	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;
 	compat_size_t  shm_segsz;
 	compat_time_t  shm_atime;
 	compat_ulong_t __unused1;
 	compat_time_t  shm_dtime;
 	compat_ulong_t __unused2;
 	compat_time_t  shm_ctime;
 	compat_ulong_t __unused3;
 	compat_pid_t   shm_cpid;
 	compat_pid_t   shm_lpid;
 	compat_ulong_t shm_nattch;
 	compat_ulong_t __unused4;
 	compat_ulong_t __unused5;
 };

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

 static inline int is_compat_thread(struct thread_info *thread)
 {
 	return test_ti_thread_flag(thread, TIF_32BIT);
 }

 #else /* !CONFIG_COMPAT */

 static inline int is_compat_task(void)
 {
 	return 0;
 }

 static inline int is_compat_thread(struct thread_info *thread)
 {
 	return 0;
 }

 #endif /* CONFIG_COMPAT */
 #endif /* __KERNEL__ */
 #endif /* __ASM_COMPAT_H */
	/*
	* Copyright (C) 2012 ARM Ltd.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	*/
	#ifndef __ASM_COMPAT_H
	#define __ASM_COMPAT_H
	#ifdef __KERNEL__
	#ifdef CONFIG_COMPAT

	/*
	* Architecture specific compatibility types
	*/
	#include <linux/types.h>
	#include <linux/sched.h>
	#include <linux/ptrace.h>

	#define COMPAT_USER_HZ 100
	#ifdef __AARCH64EB__
	#define COMPAT_UTS_MACHINE "armv8b\0\0"
	#else
	#define COMPAT_UTS_MACHINE "armv8l\0\0"
	#endif

	typedef u32 compat_size_t;
	typedef s32 compat_ssize_t;
	typedef s32 compat_time_t;
	typedef s32 compat_clock_t;
	typedef s32 compat_pid_t;
	typedef u32 __compat_uid_t;
	typedef u32 __compat_gid_t;
	typedef u16 __compat_uid16_t;
	typedef u16 __compat_gid16_t;
	typedef u32 __compat_uid32_t;
	typedef u32 __compat_gid32_t;
	typedef u16 compat_mode_t;
	typedef u32 compat_ino_t;
	typedef u32 compat_dev_t;
	typedef s32 compat_off_t;
	typedef s64 compat_loff_t;
	typedef s32 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 s16 compat_short_t;
	typedef s32 compat_int_t;
	typedef s32 compat_long_t;
	typedef s64 compat_s64;
	typedef u16 compat_ushort_t;
	typedef u32 compat_uint_t;
	typedef u32 compat_ulong_t;
	typedef u64 compat_u64;
	typedef u32 compat_uptr_t;

	struct compat_timespec {
	compat_time_t tv_sec;
	s32 tv_nsec;
	};

	struct compat_timeval {
	compat_time_t tv_sec;
	s32 tv_usec;
	};

	struct compat_stat {
	#ifdef __AARCH64EB__
	short st_dev;
	short __pad1;
	#else
	compat_dev_t st_dev;
	#endif
	compat_ino_t st_ino;
	compat_mode_t st_mode;
	compat_ushort_t st_nlink;
	__compat_uid16_t st_uid;
	__compat_gid16_t st_gid;
	#ifdef __AARCH64EB__
	short st_rdev;
	short __pad2;
	#else
	compat_dev_t st_rdev;
	#endif
	compat_off_t st_size;
	compat_off_t st_blksize;
	compat_off_t st_blocks;
	compat_time_t st_atime;
	compat_ulong_t st_atime_nsec;
	compat_time_t st_mtime;
	compat_ulong_t st_mtime_nsec;
	compat_time_t st_ctime;
	compat_ulong_t st_ctime_nsec;
	compat_ulong_t __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;

	typedef union compat_sigval {
	compat_int_t sival_int;
	compat_uptr_t sival_ptr;
	} compat_sigval_t;

	typedef struct compat_siginfo {
	int si_signo;
	int si_errno;
	int si_code;

	union {
	/* The padding is the same size as AArch64. */
	int _pad[128/sizeof(int) - 3];

	/* kill() */
	struct {
	compat_pid_t _pid; /* sender's pid */
	__compat_uid32_t _uid; /* sender's uid */
	} _kill;

	/* POSIX.1b timers */
	struct {
	compat_timer_t _tid; /* timer id */
	int _overrun; /* overrun count */
	compat_sigval_t _sigval; /* same as below */
	int _sys_private; /* not to be passed to user */
	} _timer;

	/* POSIX.1b signals */
	struct {
	compat_pid_t _pid; /* sender's pid */
	__compat_uid32_t _uid; /* sender's uid */
	compat_sigval_t _sigval;
	} _rt;

	/* SIGCHLD */
	struct {
	compat_pid_t _pid; /* which child */
	__compat_uid32_t _uid; /* sender's uid */
	int _status; /* exit code */
	compat_clock_t _utime;
	compat_clock_t _stime;
	} _sigchld;

	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
	struct {
	compat_uptr_t _addr; /* faulting insn/memory ref. */
	short _addr_lsb; /* LSB of the reported address */
	} _sigfault;

	/* SIGPOLL */
	struct {
	compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */
	int _fd;
	} _sigpoll;
	} _sifields;
	} compat_siginfo_t;

	#define COMPAT_OFF_T_MAX 0x7fffffff
	#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL

	/*
	* 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;
	}

	#define compat_user_stack_pointer() (user_stack_pointer(current_pt_regs()))

	static inline void __user *arch_compat_alloc_user_space(long len)
	{
	return (void __user *)compat_user_stack_pointer() - len;
	}

	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 mode;
	unsigned short __pad1;
	unsigned short seq;
	unsigned short __pad2;
	compat_ulong_t unused1;
	compat_ulong_t unused2;
	};

	struct compat_semid64_ds {
	struct compat_ipc64_perm sem_perm;
	compat_time_t sem_otime;
	compat_ulong_t __unused1;
	compat_time_t sem_ctime;
	compat_ulong_t __unused2;
	compat_ulong_t sem_nsems;
	compat_ulong_t __unused3;
	compat_ulong_t __unused4;
	};

	struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	compat_time_t msg_stime;
	compat_ulong_t __unused1;
	compat_time_t msg_rtime;
	compat_ulong_t __unused2;
	compat_time_t msg_ctime;
	compat_ulong_t __unused3;
	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;
	compat_size_t shm_segsz;
	compat_time_t shm_atime;
	compat_ulong_t __unused1;
	compat_time_t shm_dtime;
	compat_ulong_t __unused2;
	compat_time_t shm_ctime;
	compat_ulong_t __unused3;
	compat_pid_t shm_cpid;
	compat_pid_t shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused4;
	compat_ulong_t __unused5;
	};

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

	static inline int is_compat_thread(struct thread_info *thread)
	{
	return test_ti_thread_flag(thread, TIF_32BIT);
	}

	#else /* !CONFIG_COMPAT */

	static inline int is_compat_task(void)
	{
	return 0;
	}

	static inline int is_compat_thread(struct thread_info *thread)
	{
	return 0;
	}

	#endif /* CONFIG_COMPAT */
	#endif /* __KERNEL__ */
	#endif /* __ASM_COMPAT_H */