include/asm-powerpc/compat.h

   1 #ifndef _ASM_POWERPC_COMPAT_H
   2 #define _ASM_POWERPC_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_uid32_t;
  19 typedef u32             __compat_gid32_t;
  20 typedef u32             compat_mode_t;
  21 typedef u32             compat_ino_t;
  22 typedef u32             compat_dev_t;
  23 typedef s32             compat_off_t;
  24 typedef s64             compat_loff_t;
  25 typedef s16             compat_nlink_t;
  26 typedef u16             compat_ipc_pid_t;
  27 typedef s32             compat_daddr_t;
  28 typedef u32             compat_caddr_t;
  29 typedef __kernel_fsid_t compat_fsid_t;
  30 typedef s32             compat_key_t;
  31 typedef s32             compat_timer_t;
  32
  33 typedef s32             compat_int_t;
  34 typedef s32             compat_long_t;
  35 typedef u32             compat_uint_t;
  36 typedef u32             compat_ulong_t;
  37
  38 struct compat_timespec {
  39         compat_time_t   tv_sec;
  40         s32             tv_nsec;
  41 };
  42
  43 struct compat_timeval {
  44         compat_time_t   tv_sec;
  45         s32             tv_usec;
  46 };
  47
  48 struct compat_stat {
  49         compat_dev_t    st_dev;
  50         compat_ino_t    st_ino;
  51         compat_mode_t   st_mode;
  52         compat_nlink_t  st_nlink;
  53         __compat_uid32_t        st_uid;
  54         __compat_gid32_t        st_gid;
  55         compat_dev_t    st_rdev;
  56         compat_off_t    st_size;
  57         compat_off_t    st_blksize;
  58         compat_off_t    st_blocks;
  59         compat_time_t   st_atime;
  60         u32             st_atime_nsec;
  61         compat_time_t   st_mtime;
  62         u32             st_mtime_nsec;
  63         compat_time_t   st_ctime;
  64         u32             st_ctime_nsec;
  65         u32             __unused4[2];
  66 };
  67
  68 struct compat_flock {
  69         short           l_type;
  70         short           l_whence;
  71         compat_off_t    l_start;
  72         compat_off_t    l_len;
  73         compat_pid_t    l_pid;
  74 };
  75
  76 #define F_GETLK64       12      /*  using 'struct flock64' */
  77 #define F_SETLK64       13
  78 #define F_SETLKW64      14
  79
  80 struct compat_flock64 {
  81         short           l_type;
  82         short           l_whence;
  83         compat_loff_t   l_start;
  84         compat_loff_t   l_len;
  85         compat_pid_t    l_pid;
  86 };
  87
  88 struct compat_statfs {
  89         int             f_type;
  90         int             f_bsize;
  91         int             f_blocks;
  92         int             f_bfree;
  93         int             f_bavail;
  94         int             f_files;
  95         int             f_ffree;
  96         compat_fsid_t   f_fsid;
  97         int             f_namelen;      /* SunOS ignores this field. */
  98         int             f_frsize;
  99         int             f_spare[5];
 100 };
 101
 102 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 103 #define COMPAT_RLIM_INFINITY            0xffffffff
 104
 105 typedef u32             compat_old_sigset_t;
 106
 107 #define _COMPAT_NSIG            64
 108 #define _COMPAT_NSIG_BPW        32
 109
 110 typedef u32             compat_sigset_word;
 111
 112 #define COMPAT_OFF_T_MAX        0x7fffffff
 113 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 114
 115 /*
 116  * A pointer passed in from user mode. This should not
 117  * be used for syscall parameters, just declare them
 118  * as pointers because the syscall entry code will have
 119  * appropriately comverted them already.
 120  */
 121 typedef u32             compat_uptr_t;
 122
 123 static inline void __user *compat_ptr(compat_uptr_t uptr)
 124 {
 125         return (void __user *)(unsigned long)uptr;
 126 }
 127
 128 static inline void __user *compat_alloc_user_space(long len)
 129 {
 130         struct pt_regs *regs = current->thread.regs;
 131         unsigned long usp = regs->gpr[1];
 132
 133         /*
 134          * We cant access below the stack pointer in the 32bit ABI and
 135          * can access 288 bytes in the 64bit ABI
 136          */
 137         if (!(test_thread_flag(TIF_32BIT)))
 138                 usp -= 288;
 139
 140         return (void __user *) (usp - len);
 141 }
 142
 143 /*
 144  * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
 145  * it we may as well define it.
 146  */
 147 struct compat_ipc64_perm {
 148         compat_key_t key;
 149         __compat_uid_t uid;
 150         __compat_gid_t gid;
 151         __compat_uid_t cuid;
 152         __compat_gid_t cgid;
 153         compat_mode_t mode;
 154         unsigned int seq;
 155         unsigned int __pad2;
 156         unsigned long __unused1;        /* yes they really are 64bit pads */
 157         unsigned long __unused2;
 158 };
 159
 160 struct compat_semid64_ds {
 161         struct compat_ipc64_perm sem_perm;
 162         unsigned int __unused1;
 163         compat_time_t sem_otime;
 164         unsigned int __unused2;
 165         compat_time_t sem_ctime;
 166         compat_ulong_t sem_nsems;
 167         compat_ulong_t __unused3;
 168         compat_ulong_t __unused4;
 169 };
 170
 171 struct compat_msqid64_ds {
 172         struct compat_ipc64_perm msg_perm;
 173         unsigned int __unused1;
 174         compat_time_t msg_stime;
 175         unsigned int __unused2;
 176         compat_time_t msg_rtime;
 177         unsigned int __unused3;
 178         compat_time_t msg_ctime;
 179         compat_ulong_t msg_cbytes;
 180         compat_ulong_t msg_qnum;
 181         compat_ulong_t msg_qbytes;
 182         compat_pid_t msg_lspid;
 183         compat_pid_t msg_lrpid;
 184         compat_ulong_t __unused4;
 185         compat_ulong_t __unused5;
 186 };
 187
 188 struct compat_shmid64_ds {
 189         struct compat_ipc64_perm shm_perm;
 190         unsigned int __unused1;
 191         compat_time_t shm_atime;
 192         unsigned int __unused2;
 193         compat_time_t shm_dtime;
 194         unsigned int __unused3;
 195         compat_time_t shm_ctime;
 196         unsigned int __unused4;
 197         compat_size_t shm_segsz;
 198         compat_pid_t shm_cpid;
 199         compat_pid_t shm_lpid;
 200         compat_ulong_t shm_nattch;
 201         compat_ulong_t __unused5;
 202         compat_ulong_t __unused6;
 203 };
 204
 205 #endif /* _ASM_POWERPC_COMPAT_H */