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