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   1 #ifndef _ASM_PPC64_COMPAT_H
   2 #define _ASM_PPC64_COMPAT_H
   3 /*
   4  * Architecture specific compatibility types
   5  */
   6 #include <linux/types.h>
   7 #include <linux/sched.h>
   8
   9 #define COMPAT_USER_HZ  100
  10
  11 typedef u32             compat_size_t;
  12 typedef s32             compat_ssize_t;
  13 typedef s32             compat_time_t;
  14 typedef s32             compat_clock_t;
  15 typedef s32             compat_pid_t;
  16 typedef u32             compat_uid_t;
  17 typedef u32             compat_gid_t;
  18 typedef u32             compat_mode_t;
  19 typedef u32             compat_ino_t;
  20 typedef u32             compat_dev_t;
  21 typedef s32             compat_off_t;
  22 typedef s64             compat_loff_t;
  23 typedef s16             compat_nlink_t;
  24 typedef u16             compat_ipc_pid_t;
  25 typedef s32             compat_daddr_t;
  26 typedef u32             compat_caddr_t;
  27 typedef __kernel_fsid_t compat_fsid_t;
  28 typedef s32             compat_key_t;
  29 typedef s32             compat_timer_t;
  30
  31 typedef s32             compat_int_t;
  32 typedef s32             compat_long_t;
  33 typedef u32             compat_uint_t;
  34 typedef u32             compat_ulong_t;
  35
  36 struct compat_timespec {
  37         compat_time_t   tv_sec;
  38         s32             tv_nsec;
  39 };
  40
  41 struct compat_timeval {
  42         compat_time_t   tv_sec;
  43         s32             tv_usec;
  44 };
  45
  46 struct compat_stat {
  47         compat_dev_t    st_dev;
  48         compat_ino_t    st_ino;
  49         compat_mode_t   st_mode;
  50         compat_nlink_t  st_nlink;
  51         compat_uid_t    st_uid;
  52         compat_gid_t    st_gid;
  53         compat_dev_t    st_rdev;
  54         compat_off_t    st_size;
  55         compat_off_t    st_blksize;
  56         compat_off_t    st_blocks;
  57         compat_time_t   st_atime;
  58         u32             st_atime_nsec;
  59         compat_time_t   st_mtime;
  60         u32             st_mtime_nsec;
  61         compat_time_t   st_ctime;
  62         u32             st_ctime_nsec;
  63         u32             __unused4[2];
  64 };
  65
  66 struct compat_flock {
  67         short           l_type;
  68         short           l_whence;
  69         compat_off_t    l_start;
  70         compat_off_t    l_len;
  71         compat_pid_t    l_pid;
  72 };
  73
  74 #define F_GETLK64       12      /*  using 'struct flock64' */
  75 #define F_SETLK64       13
  76 #define F_SETLKW64      14
  77
  78 struct compat_flock64 {
  79         short           l_type;
  80         short           l_whence;
  81         compat_loff_t   l_start;
  82         compat_loff_t   l_len;
  83         compat_pid_t    l_pid;
  84 };
  85
  86 struct compat_statfs {
  87         int             f_type;
  88         int             f_bsize;
  89         int             f_blocks;
  90         int             f_bfree;
  91         int             f_bavail;
  92         int             f_files;
  93         int             f_ffree;
  94         compat_fsid_t   f_fsid;
  95         int             f_namelen;      /* SunOS ignores this field. */
  96         int             f_frsize;
  97         int             f_spare[5];
  98 };
  99
 100 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 101 #define COMPAT_RLIM_INFINITY            0xffffffff
 102
 103 typedef u32             compat_old_sigset_t;
 104
 105 #define _COMPAT_NSIG            64
 106 #define _COMPAT_NSIG_BPW        32
 107
 108 typedef u32             compat_sigset_word;
 109
 110 #define COMPAT_OFF_T_MAX        0x7fffffff
 111 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 112
 113 /*
 114  * A pointer passed in from user mode. This should not
 115  * be used for syscall parameters, just declare them
 116  * as pointers because the syscall entry code will have
 117  * appropriately comverted them already.
 118  */
 119 typedef u32             compat_uptr_t;
 120
 121 static inline void __user *compat_ptr(compat_uptr_t uptr)
 122 {
 123         return (void __user *)(unsigned long)uptr;
 124 }
 125
 126 static inline void __user *compat_alloc_user_space(long len)
 127 {
 128         struct pt_regs *regs = current->thread.regs;
 129         unsigned long usp = regs->gpr[1];
 130
 131         /*
 132          * We cant access below the stack pointer in the 32bit ABI and
 133          * can access 288 bytes in the 64bit ABI
 134          */
 135         if (!(test_thread_flag(TIF_32BIT)))
 136                 usp -= 288;
 137
 138         return (void __user *) (usp - len);
 139 }
 140
 141 /*
 142  * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
 143  * it we may as well define it.
 144  */
 145 struct compat_ipc64_perm {
 146         compat_key_t key;
 147         compat_uid_t uid;
 148         compat_gid_t gid;
 149         compat_uid_t cuid;
 150         compat_gid_t cgid;
 151         compat_mode_t mode;
 152         unsigned int seq;
 153         unsigned int __pad2;
 154         unsigned long __unused1;        /* yes they really are 64bit pads */
 155         unsigned long __unused2;
 156 };
 157
 158 struct compat_semid64_ds {
 159         struct compat_ipc64_perm sem_perm;
 160         unsigned int __unused1;
 161         compat_time_t sem_otime;
 162         unsigned int __unused2;
 163         compat_time_t sem_ctime;
 164         compat_ulong_t sem_nsems;
 165         compat_ulong_t __unused3;
 166         compat_ulong_t __unused4;
 167 };
 168
 169 struct compat_msqid64_ds {
 170         struct compat_ipc64_perm msg_perm;
 171         unsigned int __unused1;
 172         compat_time_t msg_stime;
 173         unsigned int __unused2;
 174         compat_time_t msg_rtime;
 175         unsigned int __unused3;
 176         compat_time_t msg_ctime;
 177         compat_ulong_t msg_cbytes;
 178         compat_ulong_t msg_qnum;
 179         compat_ulong_t msg_qbytes;
 180         compat_pid_t msg_lspid;
 181         compat_pid_t msg_lrpid;
 182         compat_ulong_t __unused4;
 183         compat_ulong_t __unused5;
 184 };
 185
 186 struct compat_shmid64_ds {
 187         struct compat_ipc64_perm shm_perm;
 188         unsigned int __unused1;
 189         compat_time_t shm_atime;
 190         unsigned int __unused2;
 191         compat_time_t shm_dtime;
 192         unsigned int __unused3;
 193         compat_time_t shm_ctime;
 194         unsigned int __unused4;
 195         compat_size_t shm_segsz;
 196         compat_pid_t shm_cpid;
 197         compat_pid_t shm_lpid;
 198         compat_ulong_t shm_nattch;
 199         compat_ulong_t __unused5;
 200         compat_ulong_t __unused6;
 201 };
 202
 203 #endif /* _ASM_PPC64_COMPAT_H */