include/asm-x86/compat.h

   1 #ifndef _ASM_X86_64_COMPAT_H
   2 #define _ASM_X86_64_COMPAT_H
   3
   4 /*
   5  * Architecture specific compatibility types
   6  */
   7 #include <linux/types.h>
   8 #include <linux/sched.h>
   9
  10 #define COMPAT_USER_HZ  100
  11
  12 typedef u32             compat_size_t;
  13 typedef s32             compat_ssize_t;
  14 typedef s32             compat_time_t;
  15 typedef s32             compat_clock_t;
  16 typedef s32             compat_pid_t;
  17 typedef u16             __compat_uid_t;
  18 typedef u16             __compat_gid_t;
  19 typedef u32             __compat_uid32_t;
  20 typedef u32             __compat_gid32_t;
  21 typedef u16             compat_mode_t;
  22 typedef u32             compat_ino_t;
  23 typedef u16             compat_dev_t;
  24 typedef s32             compat_off_t;
  25 typedef s64             compat_loff_t;
  26 typedef u16             compat_nlink_t;
  27 typedef u16             compat_ipc_pid_t;
  28 typedef s32             compat_daddr_t;
  29 typedef u32             compat_caddr_t;
  30 typedef __kernel_fsid_t compat_fsid_t;
  31 typedef s32             compat_timer_t;
  32 typedef s32             compat_key_t;
  33
  34 typedef s32             compat_int_t;
  35 typedef s32             compat_long_t;
  36 typedef s64 __attribute__((aligned(4))) compat_s64;
  37 typedef u32             compat_uint_t;
  38 typedef u32             compat_ulong_t;
  39 typedef u64 __attribute__((aligned(4))) compat_u64;
  40
  41 struct compat_timespec {
  42         compat_time_t   tv_sec;
  43         s32             tv_nsec;
  44 };
  45
  46 struct compat_timeval {
  47         compat_time_t   tv_sec;
  48         s32             tv_usec;
  49 };
  50
  51 struct compat_stat {
  52         compat_dev_t    st_dev;
  53         u16             __pad1;
  54         compat_ino_t    st_ino;
  55         compat_mode_t   st_mode;
  56         compat_nlink_t  st_nlink;
  57         __compat_uid_t  st_uid;
  58         __compat_gid_t  st_gid;
  59         compat_dev_t    st_rdev;
  60         u16             __pad2;
  61         u32             st_size;
  62         u32             st_blksize;
  63         u32             st_blocks;
  64         u32             st_atime;
  65         u32             st_atime_nsec;
  66         u32             st_mtime;
  67         u32             st_mtime_nsec;
  68         u32             st_ctime;
  69         u32             st_ctime_nsec;
  70         u32             __unused4;
  71         u32             __unused5;
  72 };
  73
  74 struct compat_flock {
  75         short           l_type;
  76         short           l_whence;
  77         compat_off_t    l_start;
  78         compat_off_t    l_len;
  79         compat_pid_t    l_pid;
  80 };
  81
  82 #define F_GETLK64       12      /*  using 'struct flock64' */
  83 #define F_SETLK64       13
  84 #define F_SETLKW64      14
  85
  86 /*
  87  * IA32 uses 4 byte alignment for 64 bit quantities,
  88  * so we need to pack this structure.
  89  */
  90 struct compat_flock64 {
  91         short           l_type;
  92         short           l_whence;
  93         compat_loff_t   l_start;
  94         compat_loff_t   l_len;
  95         compat_pid_t    l_pid;
  96 } __attribute__((packed));
  97
  98 struct compat_statfs {
  99         int             f_type;
 100         int             f_bsize;
 101         int             f_blocks;
 102         int             f_bfree;
 103         int             f_bavail;
 104         int             f_files;
 105         int             f_ffree;
 106         compat_fsid_t   f_fsid;
 107         int             f_namelen;      /* SunOS ignores this field. */
 108         int             f_frsize;
 109         int             f_spare[5];
 110 };
 111
 112 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 113 #define COMPAT_RLIM_INFINITY            0xffffffff
 114
 115 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 116
 117 #define _COMPAT_NSIG            64
 118 #define _COMPAT_NSIG_BPW        32
 119
 120 typedef u32               compat_sigset_word;
 121
 122 #define COMPAT_OFF_T_MAX        0x7fffffff
 123 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 124
 125 struct compat_ipc64_perm {
 126         compat_key_t key;
 127         __compat_uid32_t uid;
 128         __compat_gid32_t gid;
 129         __compat_uid32_t cuid;
 130         __compat_gid32_t cgid;
 131         unsigned short mode;
 132         unsigned short __pad1;
 133         unsigned short seq;
 134         unsigned short __pad2;
 135         compat_ulong_t unused1;
 136         compat_ulong_t unused2;
 137 };
 138
 139 struct compat_semid64_ds {
 140         struct compat_ipc64_perm sem_perm;
 141         compat_time_t  sem_otime;
 142         compat_ulong_t __unused1;
 143         compat_time_t  sem_ctime;
 144         compat_ulong_t __unused2;
 145         compat_ulong_t sem_nsems;
 146         compat_ulong_t __unused3;
 147         compat_ulong_t __unused4;
 148 };
 149
 150 struct compat_msqid64_ds {
 151         struct compat_ipc64_perm msg_perm;
 152         compat_time_t  msg_stime;
 153         compat_ulong_t __unused1;
 154         compat_time_t  msg_rtime;
 155         compat_ulong_t __unused2;
 156         compat_time_t  msg_ctime;
 157         compat_ulong_t __unused3;
 158         compat_ulong_t msg_cbytes;
 159         compat_ulong_t msg_qnum;
 160         compat_ulong_t msg_qbytes;
 161         compat_pid_t   msg_lspid;
 162         compat_pid_t   msg_lrpid;
 163         compat_ulong_t __unused4;
 164         compat_ulong_t __unused5;
 165 };
 166
 167 struct compat_shmid64_ds {
 168         struct compat_ipc64_perm shm_perm;
 169         compat_size_t  shm_segsz;
 170         compat_time_t  shm_atime;
 171         compat_ulong_t __unused1;
 172         compat_time_t  shm_dtime;
 173         compat_ulong_t __unused2;
 174         compat_time_t  shm_ctime;
 175         compat_ulong_t __unused3;
 176         compat_pid_t   shm_cpid;
 177         compat_pid_t   shm_lpid;
 178         compat_ulong_t shm_nattch;
 179         compat_ulong_t __unused4;
 180         compat_ulong_t __unused5;
 181 };
 182
 183 /*
 184  * A pointer passed in from user mode. This should not
 185  * be used for syscall parameters, just declare them
 186  * as pointers because the syscall entry code will have
 187  * appropriately comverted them already.
 188  */
 189 typedef u32             compat_uptr_t;
 190
 191 static inline void __user *compat_ptr(compat_uptr_t uptr)
 192 {
 193         return (void __user *)(unsigned long)uptr;
 194 }
 195
 196 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 197 {
 198         return (u32)(unsigned long)uptr;
 199 }
 200
 201 static __inline__ void __user *compat_alloc_user_space(long len)
 202 {
 203         struct pt_regs *regs = task_pt_regs(current);
 204         return (void __user *)regs->rsp - len;
 205 }
 206
 207 static inline int is_compat_task(void)
 208 {
 209         return current_thread_info()->status & TS_COMPAT;
 210 }
 211
 212 #endif /* _ASM_X86_64_COMPAT_H */