include/linux/compat.h

   1 #ifndef _LINUX_COMPAT_H
   2 #define _LINUX_COMPAT_H
   3 /*
   4  * These are the type definitions for the architecture specific
   5  * syscall compatibility layer.
   6  */
   7 #include <linux/config.h>
   8
   9 #ifdef CONFIG_COMPAT
  10
  11 #include <linux/stat.h>
  12 #include <linux/param.h>        /* for HZ */
  13 #include <linux/sem.h>
  14
  15 #include <asm/compat.h>
  16 #include <asm/siginfo.h>
  17
  18 #define compat_jiffies_to_clock_t(x)    \
  19                 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
  20
  21 typedef __compat_uid32_t        compat_uid_t;
  22 typedef __compat_gid32_t        compat_gid_t;
  23
  24 struct rusage;
  25
  26 struct compat_itimerspec {
  27         struct compat_timespec it_interval;
  28         struct compat_timespec it_value;
  29 };
  30
  31 struct compat_utimbuf {
  32         compat_time_t           actime;
  33         compat_time_t           modtime;
  34 };
  35
  36 struct compat_itimerval {
  37         struct compat_timeval   it_interval;
  38         struct compat_timeval   it_value;
  39 };
  40
  41 struct compat_tms {
  42         compat_clock_t          tms_utime;
  43         compat_clock_t          tms_stime;
  44         compat_clock_t          tms_cutime;
  45         compat_clock_t          tms_cstime;
  46 };
  47
  48 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
  49
  50 typedef struct {
  51         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
  52 } compat_sigset_t;
  53
  54 extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
  55 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
  56 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
  57
  58 struct compat_iovec {
  59         compat_uptr_t   iov_base;
  60         compat_size_t   iov_len;
  61 };
  62
  63 struct compat_rlimit {
  64         compat_ulong_t  rlim_cur;
  65         compat_ulong_t  rlim_max;
  66 };
  67
  68 struct compat_rusage {
  69         struct compat_timeval ru_utime;
  70         struct compat_timeval ru_stime;
  71         compat_long_t   ru_maxrss;
  72         compat_long_t   ru_ixrss;
  73         compat_long_t   ru_idrss;
  74         compat_long_t   ru_isrss;
  75         compat_long_t   ru_minflt;
  76         compat_long_t   ru_majflt;
  77         compat_long_t   ru_nswap;
  78         compat_long_t   ru_inblock;
  79         compat_long_t   ru_oublock;
  80         compat_long_t   ru_msgsnd;
  81         compat_long_t   ru_msgrcv;
  82         compat_long_t   ru_nsignals;
  83         compat_long_t   ru_nvcsw;
  84         compat_long_t   ru_nivcsw;
  85 };
  86
  87 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
  88
  89 struct compat_siginfo;
  90
  91 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
  92                 struct compat_siginfo __user *, int,
  93                 struct compat_rusage __user *);
  94
  95 struct compat_dirent {
  96         u32             d_ino;
  97         compat_off_t    d_off;
  98         u16             d_reclen;
  99         char            d_name[256];
 100 };
 101
 102 typedef union compat_sigval {
 103         compat_int_t    sival_int;
 104         compat_uptr_t   sival_ptr;
 105 } compat_sigval_t;
 106
 107 #define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 108
 109 typedef struct compat_sigevent {
 110         compat_sigval_t sigev_value;
 111         compat_int_t sigev_signo;
 112         compat_int_t sigev_notify;
 113         union {
 114                 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
 115                 compat_int_t _tid;
 116
 117                 struct {
 118                         compat_uptr_t _function;
 119                         compat_uptr_t _attribute;
 120                 } _sigev_thread;
 121         } _sigev_un;
 122 } compat_sigevent_t;
 123
 124
 125 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
 126 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
 127 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
 128                 int version, void __user *uptr);
 129 long compat_sys_msgctl(int first, int second, void __user *uptr);
 130 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
 131                 void __user *uptr);
 132 long compat_sys_shmctl(int first, int second, void __user *uptr);
 133 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
 134                 unsigned nsems, const struct compat_timespec __user *timeout);
 135 asmlinkage long compat_sys_keyctl(u32 option,
 136                               u32 arg2, u32 arg3, u32 arg4, u32 arg5);
 137
 138 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
 139                 const struct compat_iovec __user *vec, unsigned long vlen);
 140 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
 141                 const struct compat_iovec __user *vec, unsigned long vlen);
 142
 143 int compat_do_execve(char * filename, compat_uptr_t __user *argv,
 144                 compat_uptr_t __user *envp, struct pt_regs * regs);
 145
 146 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 147                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 148                 struct compat_timeval __user *tvp);
 149
 150 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
 151
 152 #define BITS_TO_COMPAT_LONGS(bits) \
 153         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
 154
 155 long compat_get_bitmap(unsigned long *mask, compat_ulong_t __user *umask,
 156                        unsigned long bitmap_size);
 157 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
 158                        unsigned long bitmap_size);
 159 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
 160 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
 161 int get_compat_sigevent(struct sigevent *event,
 162                 const struct compat_sigevent __user *u_event);
 163
 164 #endif /* CONFIG_COMPAT */
 165 #endif /* _LINUX_COMPAT_H */