1 #ifndef _ASM_X86_COMPAT_H

     2 #define _ASM_X86_COMPAT_H

     3 

     4 /*

     5  * Architecture specific compatibility types

     6  */

     7 #include <linux/types.h>

     8 #include <linux/sched.h>

     9 #include <asm/user32.h>

    10 

    11 #define COMPAT_USER_HZ	100

    12 

    13 typedef u32		compat_size_t;

    14 typedef s32		compat_ssize_t;

    15 typedef s32		compat_time_t;

    16 typedef s32		compat_clock_t;

    17 typedef s32		compat_pid_t;

    18 typedef u16		__compat_uid_t;

    19 typedef u16		__compat_gid_t;

    20 typedef u32		__compat_uid32_t;

    21 typedef u32		__compat_gid32_t;

    22 typedef u16		compat_mode_t;

    23 typedef u32		compat_ino_t;

    24 typedef u16		compat_dev_t;

    25 typedef s32		compat_off_t;

    26 typedef s64		compat_loff_t;

    27 typedef u16		compat_nlink_t;

    28 typedef u16		compat_ipc_pid_t;

    29 typedef s32		compat_daddr_t;

    30 typedef u32		compat_caddr_t;

    31 typedef __kernel_fsid_t	compat_fsid_t;

    32 typedef s32		compat_timer_t;

    33 typedef s32		compat_key_t;

    34 

    35 typedef s32		compat_int_t;

    36 typedef s32		compat_long_t;

    37 typedef s64 __attribute__((aligned(4))) compat_s64;

    38 typedef u32		compat_uint_t;

    39 typedef u32		compat_ulong_t;

    40 typedef u64 __attribute__((aligned(4))) compat_u64;

    41 

    42 struct compat_timespec {

    43 	compat_time_t	tv_sec;

    44 	s32		tv_nsec;

    45 };

    46 

    47 struct compat_timeval {

    48 	compat_time_t	tv_sec;

    49 	s32		tv_usec;

    50 };

    51 

    52 struct compat_stat {

    53 	compat_dev_t	st_dev;

    54 	u16		__pad1;

    55 	compat_ino_t	st_ino;

    56 	compat_mode_t	st_mode;

    57 	compat_nlink_t	st_nlink;

    58 	__compat_uid_t	st_uid;

    59 	__compat_gid_t	st_gid;

    60 	compat_dev_t	st_rdev;

    61 	u16		__pad2;

    62 	u32		st_size;

    63 	u32		st_blksize;

    64 	u32		st_blocks;

    65 	u32		st_atime;

    66 	u32		st_atime_nsec;

    67 	u32		st_mtime;

    68 	u32		st_mtime_nsec;

    69 	u32		st_ctime;

    70 	u32		st_ctime_nsec;

    71 	u32		__unused4;

    72 	u32		__unused5;

    73 };

    74 

    75 struct compat_flock {

    76 	short		l_type;

    77 	short		l_whence;

    78 	compat_off_t	l_start;

    79 	compat_off_t	l_len;

    80 	compat_pid_t	l_pid;

    81 };

    82 

    83 #define F_GETLK64	12	/*  using 'struct flock64' */

    84 #define F_SETLK64	13

    85 #define F_SETLKW64	14

    86 

    87 /*

    88  * IA32 uses 4 byte alignment for 64 bit quantities,

    89  * so we need to pack this structure.

    90  */

    91 struct compat_flock64 {

    92 	short		l_type;

    93 	short		l_whence;

    94 	compat_loff_t	l_start;

    95 	compat_loff_t	l_len;

    96 	compat_pid_t	l_pid;

    97 } __attribute__((packed));

    98 

    99 struct compat_statfs {

   100 	int		f_type;

   101 	int		f_bsize;

   102 	int		f_blocks;

   103 	int		f_bfree;

   104 	int		f_bavail;

   105 	int		f_files;

   106 	int		f_ffree;

   107 	compat_fsid_t	f_fsid;

   108 	int		f_namelen;	/* SunOS ignores this field. */

   109 	int		f_frsize;

   110 	int		f_spare[5];

   111 };

   112 

   113 #define COMPAT_RLIM_OLD_INFINITY	0x7fffffff

   114 #define COMPAT_RLIM_INFINITY		0xffffffff

   115 

   116 typedef u32		compat_old_sigset_t;	/* at least 32 bits */

   117 

   118 #define _COMPAT_NSIG		64

   119 #define _COMPAT_NSIG_BPW	32

   120 

   121 typedef u32               compat_sigset_word;

   122 

   123 #define COMPAT_OFF_T_MAX	0x7fffffff

   124 #define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL

   125 

   126 struct compat_ipc64_perm {

   127 	compat_key_t key;

   128 	__compat_uid32_t uid;

   129 	__compat_gid32_t gid;

   130 	__compat_uid32_t cuid;

   131 	__compat_gid32_t cgid;

   132 	unsigned short mode;

   133 	unsigned short __pad1;

   134 	unsigned short seq;

   135 	unsigned short __pad2;

   136 	compat_ulong_t unused1;

   137 	compat_ulong_t unused2;

   138 };

   139 

   140 struct compat_semid64_ds {

   141 	struct compat_ipc64_perm sem_perm;

   142 	compat_time_t  sem_otime;

   143 	compat_ulong_t __unused1;

   144 	compat_time_t  sem_ctime;

   145 	compat_ulong_t __unused2;

   146 	compat_ulong_t sem_nsems;

   147 	compat_ulong_t __unused3;

   148 	compat_ulong_t __unused4;

   149 };

   150 

   151 struct compat_msqid64_ds {

   152 	struct compat_ipc64_perm msg_perm;

   153 	compat_time_t  msg_stime;

   154 	compat_ulong_t __unused1;

   155 	compat_time_t  msg_rtime;

   156 	compat_ulong_t __unused2;

   157 	compat_time_t  msg_ctime;

   158 	compat_ulong_t __unused3;

   159 	compat_ulong_t msg_cbytes;

   160 	compat_ulong_t msg_qnum;

   161 	compat_ulong_t msg_qbytes;

   162 	compat_pid_t   msg_lspid;

   163 	compat_pid_t   msg_lrpid;

   164 	compat_ulong_t __unused4;

   165 	compat_ulong_t __unused5;

   166 };

   167 

   168 struct compat_shmid64_ds {

   169 	struct compat_ipc64_perm shm_perm;

   170 	compat_size_t  shm_segsz;

   171 	compat_time_t  shm_atime;

   172 	compat_ulong_t __unused1;

   173 	compat_time_t  shm_dtime;

   174 	compat_ulong_t __unused2;

   175 	compat_time_t  shm_ctime;

   176 	compat_ulong_t __unused3;

   177 	compat_pid_t   shm_cpid;

   178 	compat_pid_t   shm_lpid;

   179 	compat_ulong_t shm_nattch;

   180 	compat_ulong_t __unused4;

   181 	compat_ulong_t __unused5;

   182 };

   183 

   184 /*

   185  * The type of struct elf_prstatus.pr_reg in compatible core dumps.

   186  */

   187 typedef struct user_regs_struct32 compat_elf_gregset_t;

   188 

   189 /*

   190  * A pointer passed in from user mode. This should not

   191  * be used for syscall parameters, just declare them

   192  * as pointers because the syscall entry code will have

   193  * appropriately converted them already.

   194  */

   195 typedef	u32		compat_uptr_t;

   196 

   197 static inline void __user *compat_ptr(compat_uptr_t uptr)

   198 {

   199 	return (void __user *)(unsigned long)uptr;

   200 }

   201 

   202 static inline compat_uptr_t ptr_to_compat(void __user *uptr)

   203 {

   204 	return (u32)(unsigned long)uptr;

   205 }

   206 

   207 static inline void __user *compat_alloc_user_space(long len)

   208 {

   209 	struct pt_regs *regs = task_pt_regs(current);

   210 	return (void __user *)regs->sp - len;

   211 }

   212 

   213 static inline int is_compat_task(void)

   214 {

   215 	return current_thread_info()->status & TS_COMPAT;

   216 }

   217 

   218 #endif /* _ASM_X86_COMPAT_H */