include/asm-powerpc/compat.h

   1 #ifndef _ASM_POWERPC_COMPAT_H
   2 #define _ASM_POWERPC_COMPAT_H
   3 #ifdef __KERNEL__
   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 u32             __compat_uid_t;
  18 typedef u32             __compat_gid_t;
  19 typedef u32             __compat_uid32_t;
  20 typedef u32             __compat_gid32_t;
  21 typedef u32             compat_mode_t;
  22 typedef u32             compat_ino_t;
  23 typedef u32             compat_dev_t;
  24 typedef s32             compat_off_t;
  25 typedef s64             compat_loff_t;
  26 typedef s16             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_key_t;
  32 typedef s32             compat_timer_t;
  33
  34 typedef s32             compat_int_t;
  35 typedef s32             compat_long_t;
  36 typedef u32             compat_uint_t;
  37 typedef u32             compat_ulong_t;
  38
  39 struct compat_timespec {
  40         compat_time_t   tv_sec;
  41         s32             tv_nsec;
  42 };
  43
  44 struct compat_timeval {
  45         compat_time_t   tv_sec;
  46         s32             tv_usec;
  47 };
  48
  49 struct compat_stat {
  50         compat_dev_t    st_dev;
  51         compat_ino_t    st_ino;
  52         compat_mode_t   st_mode;
  53         compat_nlink_t  st_nlink;
  54         __compat_uid32_t        st_uid;
  55         __compat_gid32_t        st_gid;
  56         compat_dev_t    st_rdev;
  57         compat_off_t    st_size;
  58         compat_off_t    st_blksize;
  59         compat_off_t    st_blocks;
  60         compat_time_t   st_atime;
  61         u32             st_atime_nsec;
  62         compat_time_t   st_mtime;
  63         u32             st_mtime_nsec;
  64         compat_time_t   st_ctime;
  65         u32             st_ctime_nsec;
  66         u32             __unused4[2];
  67 };
  68
  69 struct compat_flock {
  70         short           l_type;
  71         short           l_whence;
  72         compat_off_t    l_start;
  73         compat_off_t    l_len;
  74         compat_pid_t    l_pid;
  75 };
  76
  77 #define F_GETLK64       12      /*  using 'struct flock64' */
  78 #define F_SETLK64       13
  79 #define F_SETLKW64      14
  80
  81 struct compat_flock64 {
  82         short           l_type;
  83         short           l_whence;
  84         compat_loff_t   l_start;
  85         compat_loff_t   l_len;
  86         compat_pid_t    l_pid;
  87 };
  88
  89 struct compat_statfs {
  90         int             f_type;
  91         int             f_bsize;
  92         int             f_blocks;
  93         int             f_bfree;
  94         int             f_bavail;
  95         int             f_files;
  96         int             f_ffree;
  97         compat_fsid_t   f_fsid;
  98         int             f_namelen;      /* SunOS ignores this field. */
  99         int             f_frsize;
 100         int             f_spare[5];
 101 };
 102
 103 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 104 #define COMPAT_RLIM_INFINITY            0xffffffff
 105
 106 typedef u32             compat_old_sigset_t;
 107
 108 #define _COMPAT_NSIG            64
 109 #define _COMPAT_NSIG_BPW        32
 110
 111 typedef u32             compat_sigset_word;
 112
 113 #define COMPAT_OFF_T_MAX        0x7fffffff
 114 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 115
 116 /*
 117  * A pointer passed in from user mode. This should not
 118  * be used for syscall parameters, just declare them
 119  * as pointers because the syscall entry code will have
 120  * appropriately comverted them already.
 121  */
 122 typedef u32             compat_uptr_t;
 123
 124 static inline void __user *compat_ptr(compat_uptr_t uptr)
 125 {
 126         return (void __user *)(unsigned long)uptr;
 127 }
 128
 129 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 130 {
 131         return (u32)(unsigned long)uptr;
 132 }
 133
 134 static inline void __user *compat_alloc_user_space(long len)
 135 {
 136         struct pt_regs *regs = current->thread.regs;
 137         unsigned long usp = regs->gpr[1];
 138
 139         /*
 140          * We cant access below the stack pointer in the 32bit ABI and
 141          * can access 288 bytes in the 64bit ABI
 142          */
 143         if (!(test_thread_flag(TIF_32BIT)))
 144                 usp -= 288;
 145
 146         return (void __user *) (usp - len);
 147 }
 148
 149 /*
 150  * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
 151  * it we may as well define it.
 152  */
 153 struct compat_ipc64_perm {
 154         compat_key_t key;
 155         __compat_uid_t uid;
 156         __compat_gid_t gid;
 157         __compat_uid_t cuid;
 158         __compat_gid_t cgid;
 159         compat_mode_t mode;
 160         unsigned int seq;
 161         unsigned int __pad2;
 162         unsigned long __unused1;        /* yes they really are 64bit pads */
 163         unsigned long __unused2;
 164 };
 165
 166 struct compat_semid64_ds {
 167         struct compat_ipc64_perm sem_perm;
 168         unsigned int __unused1;
 169         compat_time_t sem_otime;
 170         unsigned int __unused2;
 171         compat_time_t sem_ctime;
 172         compat_ulong_t sem_nsems;
 173         compat_ulong_t __unused3;
 174         compat_ulong_t __unused4;
 175 };
 176
 177 struct compat_msqid64_ds {
 178         struct compat_ipc64_perm msg_perm;
 179         unsigned int __unused1;
 180         compat_time_t msg_stime;
 181         unsigned int __unused2;
 182         compat_time_t msg_rtime;
 183         unsigned int __unused3;
 184         compat_time_t msg_ctime;
 185         compat_ulong_t msg_cbytes;
 186         compat_ulong_t msg_qnum;
 187         compat_ulong_t msg_qbytes;
 188         compat_pid_t msg_lspid;
 189         compat_pid_t msg_lrpid;
 190         compat_ulong_t __unused4;
 191         compat_ulong_t __unused5;
 192 };
 193
 194 struct compat_shmid64_ds {
 195         struct compat_ipc64_perm shm_perm;
 196         unsigned int __unused1;
 197         compat_time_t shm_atime;
 198         unsigned int __unused2;
 199         compat_time_t shm_dtime;
 200         unsigned int __unused3;
 201         compat_time_t shm_ctime;
 202         unsigned int __unused4;
 203         compat_size_t shm_segsz;
 204         compat_pid_t shm_cpid;
 205         compat_pid_t shm_lpid;
 206         compat_ulong_t shm_nattch;
 207         compat_ulong_t __unused5;
 208         compat_ulong_t __unused6;
 209 };
 210
 211 #endif /* __KERNEL__ */
 212 #endif /* _ASM_POWERPC_COMPAT_H */