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 struct compat_itimerspec {
  22         struct compat_timespec it_interval;
  23         struct compat_timespec it_value;
  24 };
  25
  26 struct compat_utimbuf {
  27         compat_time_t           actime;
  28         compat_time_t           modtime;
  29 };
  30
  31 struct compat_itimerval {
  32         struct compat_timeval   it_interval;
  33         struct compat_timeval   it_value;
  34 };
  35
  36 struct compat_tms {
  37         compat_clock_t          tms_utime;
  38         compat_clock_t          tms_stime;
  39         compat_clock_t          tms_cutime;
  40         compat_clock_t          tms_cstime;
  41 };
  42
  43 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
  44
  45 typedef struct {
  46         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
  47 } compat_sigset_t;
  48
  49 extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
  50 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
  51 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
  52
  53 struct compat_iovec {
  54         compat_uptr_t   iov_base;
  55         compat_size_t   iov_len;
  56 };
  57
  58 struct compat_rlimit {
  59         compat_ulong_t  rlim_cur;
  60         compat_ulong_t  rlim_max;
  61 };
  62
  63 struct compat_rusage {
  64         struct compat_timeval ru_utime;
  65         struct compat_timeval ru_stime;
  66         compat_long_t   ru_maxrss;
  67         compat_long_t   ru_ixrss;
  68         compat_long_t   ru_idrss;
  69         compat_long_t   ru_isrss;
  70         compat_long_t   ru_minflt;
  71         compat_long_t   ru_majflt;
  72         compat_long_t   ru_nswap;
  73         compat_long_t   ru_inblock;
  74         compat_long_t   ru_oublock;
  75         compat_long_t   ru_msgsnd;
  76         compat_long_t   ru_msgrcv;
  77         compat_long_t   ru_nsignals;
  78         compat_long_t   ru_nvcsw;
  79         compat_long_t   ru_nivcsw;
  80 };
  81
  82 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
  83
  84 struct compat_dirent {
  85         u32             d_ino;
  86         compat_off_t    d_off;
  87         u16             d_reclen;
  88         char            d_name[256];
  89 };
  90
  91 typedef union compat_sigval {
  92         compat_int_t    sival_int;
  93         compat_uptr_t   sival_ptr;
  94 } compat_sigval_t;
  95
  96 typedef struct compat_sigevent {
  97         compat_sigval_t sigev_value;
  98         compat_int_t sigev_signo;
  99         compat_int_t sigev_notify;
 100         union {
 101                 compat_int_t _pad[SIGEV_PAD_SIZE];
 102                 compat_int_t _tid;
 103
 104                 struct {
 105                         compat_uptr_t _function;
 106                         compat_uptr_t _attribute;
 107                 } _sigev_thread;
 108         } _sigev_un;
 109 } compat_sigevent_t;
 110
 111
 112 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
 113 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
 114 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
 115                 int version, void __user *uptr);
 116 long compat_sys_msgctl(int first, int second, void __user *uptr);
 117 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
 118                 void __user *uptr);
 119 long compat_sys_shmctl(int first, int second, void __user *uptr);
 120 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
 121                 unsigned nsems, const struct compat_timespec __user *timeout);
 122
 123 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
 124                 const struct compat_iovec __user *vec, unsigned long vlen);
 125 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
 126                 const struct compat_iovec __user *vec, unsigned long vlen);
 127
 128 int compat_do_execve(char * filename, compat_uptr_t __user *argv,
 129                 compat_uptr_t __user *envp, struct pt_regs * regs);
 130
 131 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 132                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 133                 struct compat_timeval __user *tvp);
 134
 135 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
 136
 137 #define BITS_TO_COMPAT_LONGS(bits) \
 138         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
 139
 140 long compat_get_bitmap(unsigned long *mask, compat_ulong_t __user *umask,
 141                        unsigned long bitmap_size);
 142 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
 143                        unsigned long bitmap_size);
 144
 145 #endif /* CONFIG_COMPAT */
 146 #endif /* _LINUX_COMPAT_H */