include/asm-ppc64/compat.h

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