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
   8 #ifdef CONFIG_COMPAT
   9
  10 #include <linux/stat.h>
  11 #include <linux/param.h>        /* for HZ */
  12 #include <linux/sem.h>
  13 #include <linux/socket.h>
  14 #include <linux/if.h>
  15 #include <linux/fs.h>
  16 #include <linux/aio_abi.h>      /* for aio_context_t */
  17
  18 #include <asm/compat.h>
  19 #include <asm/siginfo.h>
  20 #include <asm/signal.h>
  21
  22 #ifndef COMPAT_USE_64BIT_TIME
  23 #define COMPAT_USE_64BIT_TIME 0
  24 #endif
  25
  26 #define compat_jiffies_to_clock_t(x)    \
  27                 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
  28
  29 typedef __compat_uid32_t        compat_uid_t;
  30 typedef __compat_gid32_t        compat_gid_t;
  31
  32 struct compat_sel_arg_struct;
  33 struct rusage;
  34
  35 struct compat_itimerspec {
  36         struct compat_timespec it_interval;
  37         struct compat_timespec it_value;
  38 };
  39
  40 struct compat_utimbuf {
  41         compat_time_t           actime;
  42         compat_time_t           modtime;
  43 };
  44
  45 struct compat_itimerval {
  46         struct compat_timeval   it_interval;
  47         struct compat_timeval   it_value;
  48 };
  49
  50 struct compat_tms {
  51         compat_clock_t          tms_utime;
  52         compat_clock_t          tms_stime;
  53         compat_clock_t          tms_cutime;
  54         compat_clock_t          tms_cstime;
  55 };
  56
  57 struct compat_timex {
  58         compat_uint_t modes;
  59         compat_long_t offset;
  60         compat_long_t freq;
  61         compat_long_t maxerror;
  62         compat_long_t esterror;
  63         compat_int_t status;
  64         compat_long_t constant;
  65         compat_long_t precision;
  66         compat_long_t tolerance;
  67         struct compat_timeval time;
  68         compat_long_t tick;
  69         compat_long_t ppsfreq;
  70         compat_long_t jitter;
  71         compat_int_t shift;
  72         compat_long_t stabil;
  73         compat_long_t jitcnt;
  74         compat_long_t calcnt;
  75         compat_long_t errcnt;
  76         compat_long_t stbcnt;
  77         compat_int_t tai;
  78
  79         compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
  80         compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
  81         compat_int_t:32; compat_int_t:32; compat_int_t:32;
  82 };
  83
  84 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
  85
  86 typedef struct {
  87         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
  88 } compat_sigset_t;
  89
  90 /*
  91  * These functions operate strictly on struct compat_time*
  92  */
  93 extern int get_compat_timespec(struct timespec *,
  94                                const struct compat_timespec __user *);
  95 extern int put_compat_timespec(const struct timespec *,
  96                                struct compat_timespec __user *);
  97 extern int get_compat_timeval(struct timeval *,
  98                               const struct compat_timeval __user *);
  99 extern int put_compat_timeval(const struct timeval *,
 100                               struct compat_timeval __user *);
 101 /*
 102  * These functions operate on 32- or 64-bit specs depending on
 103  * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
 104  * naming as compat_get/put_ rather than get/put_compat_.
 105  */
 106 extern int compat_get_timespec(struct timespec *, const void __user *);
 107 extern int compat_put_timespec(const struct timespec *, void __user *);
 108 extern int compat_get_timeval(struct timeval *, const void __user *);
 109 extern int compat_put_timeval(const struct timeval *, void __user *);
 110
 111 struct compat_iovec {
 112         compat_uptr_t   iov_base;
 113         compat_size_t   iov_len;
 114 };
 115
 116 struct compat_rlimit {
 117         compat_ulong_t  rlim_cur;
 118         compat_ulong_t  rlim_max;
 119 };
 120
 121 struct compat_rusage {
 122         struct compat_timeval ru_utime;
 123         struct compat_timeval ru_stime;
 124         compat_long_t   ru_maxrss;
 125         compat_long_t   ru_ixrss;
 126         compat_long_t   ru_idrss;
 127         compat_long_t   ru_isrss;
 128         compat_long_t   ru_minflt;
 129         compat_long_t   ru_majflt;
 130         compat_long_t   ru_nswap;
 131         compat_long_t   ru_inblock;
 132         compat_long_t   ru_oublock;
 133         compat_long_t   ru_msgsnd;
 134         compat_long_t   ru_msgrcv;
 135         compat_long_t   ru_nsignals;
 136         compat_long_t   ru_nvcsw;
 137         compat_long_t   ru_nivcsw;
 138 };
 139
 140 extern int put_compat_rusage(const struct rusage *,
 141                              struct compat_rusage __user *);
 142
 143 struct compat_siginfo;
 144
 145 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
 146                 struct compat_siginfo __user *, int,
 147                 struct compat_rusage __user *);
 148
 149 struct compat_dirent {
 150         u32             d_ino;
 151         compat_off_t    d_off;
 152         u16             d_reclen;
 153         char            d_name[256];
 154 };
 155
 156 struct compat_ustat {
 157         compat_daddr_t          f_tfree;
 158         compat_ino_t            f_tinode;
 159         char                    f_fname[6];
 160         char                    f_fpack[6];
 161 };
 162
 163 #define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 164
 165 typedef struct compat_sigevent {
 166         compat_sigval_t sigev_value;
 167         compat_int_t sigev_signo;
 168         compat_int_t sigev_notify;
 169         union {
 170                 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
 171                 compat_int_t _tid;
 172
 173                 struct {
 174                         compat_uptr_t _function;
 175                         compat_uptr_t _attribute;
 176                 } _sigev_thread;
 177         } _sigev_un;
 178 } compat_sigevent_t;
 179
 180 struct compat_ifmap {
 181         compat_ulong_t mem_start;
 182         compat_ulong_t mem_end;
 183         unsigned short base_addr;
 184         unsigned char irq;
 185         unsigned char dma;
 186         unsigned char port;
 187 };
 188
 189 struct compat_if_settings {
 190         unsigned int type;      /* Type of physical device or protocol */
 191         unsigned int size;      /* Size of the data allocated by the caller */
 192         compat_uptr_t ifs_ifsu; /* union of pointers */
 193 };
 194
 195 struct compat_ifreq {
 196         union {
 197                 char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
 198         } ifr_ifrn;
 199         union {
 200                 struct  sockaddr ifru_addr;
 201                 struct  sockaddr ifru_dstaddr;
 202                 struct  sockaddr ifru_broadaddr;
 203                 struct  sockaddr ifru_netmask;
 204                 struct  sockaddr ifru_hwaddr;
 205                 short   ifru_flags;
 206                 compat_int_t    ifru_ivalue;
 207                 compat_int_t    ifru_mtu;
 208                 struct  compat_ifmap ifru_map;
 209                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 210                 char    ifru_newname[IFNAMSIZ];
 211                 compat_caddr_t  ifru_data;
 212                 struct  compat_if_settings ifru_settings;
 213         } ifr_ifru;
 214 };
 215
 216 struct compat_ifconf {
 217         compat_int_t    ifc_len;                /* size of buffer */
 218         compat_caddr_t  ifcbuf;
 219 };
 220
 221 struct compat_robust_list {
 222         compat_uptr_t                   next;
 223 };
 224
 225 struct compat_robust_list_head {
 226         struct compat_robust_list       list;
 227         compat_long_t                   futex_offset;
 228         compat_uptr_t                   list_op_pending;
 229 };
 230
 231 struct compat_statfs;
 232 struct compat_statfs64;
 233 struct compat_old_linux_dirent;
 234 struct compat_linux_dirent;
 235 struct linux_dirent64;
 236 struct compat_msghdr;
 237 struct compat_mmsghdr;
 238 struct compat_sysinfo;
 239 struct compat_sysctl_args;
 240 struct compat_kexec_segment;
 241 struct compat_mq_attr;
 242 struct compat_msgbuf;
 243
 244 extern void compat_exit_robust_list(struct task_struct *curr);
 245
 246 asmlinkage long
 247 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
 248                            compat_size_t len);
 249 asmlinkage long
 250 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 251                            compat_size_t __user *len_ptr);
 252
 253 #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
 254 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
 255 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
 256 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
 257                 int version, void __user *uptr);
 258 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
 259                 void __user *uptr);
 260 #else
 261 long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
 262 long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
 263                 compat_ssize_t msgsz, int msgflg);
 264 long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
 265                 compat_ssize_t msgsz, long msgtyp, int msgflg);
 266 long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
 267 #endif
 268 long compat_sys_msgctl(int first, int second, void __user *uptr);
 269 long compat_sys_shmctl(int first, int second, void __user *uptr);
 270 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
 271                 unsigned nsems, const struct compat_timespec __user *timeout);
 272 asmlinkage long compat_sys_keyctl(u32 option,
 273                               u32 arg2, u32 arg3, u32 arg4, u32 arg5);
 274 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
 275
 276 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
 277                 const struct compat_iovec __user *vec, unsigned long vlen);
 278 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
 279                 const struct compat_iovec __user *vec, unsigned long vlen);
 280 asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
 281                 const struct compat_iovec __user *vec,
 282                 unsigned long vlen, u32 pos_low, u32 pos_high);
 283 asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
 284                 const struct compat_iovec __user *vec,
 285                 unsigned long vlen, u32 pos_low, u32 pos_high);
 286
 287 int compat_do_execve(char *filename, compat_uptr_t __user *argv,
 288                      compat_uptr_t __user *envp, struct pt_regs *regs);
 289
 290 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 291                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 292                 struct compat_timeval __user *tvp);
 293
 294 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
 295
 296 asmlinkage long compat_sys_wait4(compat_pid_t pid,
 297                                  compat_uint_t __user *stat_addr, int options,
 298                                  struct compat_rusage __user *ru);
 299
 300 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
 301
 302 #define BITS_TO_COMPAT_LONGS(bits) \
 303         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
 304
 305 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
 306                        unsigned long bitmap_size);
 307 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
 308                        unsigned long bitmap_size);
 309 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
 310 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
 311 int get_compat_sigevent(struct sigevent *event,
 312                 const struct compat_sigevent __user *u_event);
 313 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
 314                                   struct compat_siginfo __user *uinfo);
 315
 316 static inline int compat_timeval_compare(struct compat_timeval *lhs,
 317                                         struct compat_timeval *rhs)
 318 {
 319         if (lhs->tv_sec < rhs->tv_sec)
 320                 return -1;
 321         if (lhs->tv_sec > rhs->tv_sec)
 322                 return 1;
 323         return lhs->tv_usec - rhs->tv_usec;
 324 }
 325
 326 static inline int compat_timespec_compare(struct compat_timespec *lhs,
 327                                         struct compat_timespec *rhs)
 328 {
 329         if (lhs->tv_sec < rhs->tv_sec)
 330                 return -1;
 331         if (lhs->tv_sec > rhs->tv_sec)
 332                 return 1;
 333         return lhs->tv_nsec - rhs->tv_nsec;
 334 }
 335
 336 extern int get_compat_itimerspec(struct itimerspec *dst,
 337                                  const struct compat_itimerspec __user *src);
 338 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
 339                                  const struct itimerspec *src);
 340
 341 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
 342                 struct timezone __user *tz);
 343 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
 344                 struct timezone __user *tz);
 345
 346 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
 347
 348 extern int compat_printk(const char *fmt, ...);
 349 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
 350
 351 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
 352                 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
 353                 const compat_ulong_t __user *new_nodes);
 354
 355 extern int compat_ptrace_request(struct task_struct *child,
 356                                  compat_long_t request,
 357                                  compat_ulong_t addr, compat_ulong_t data);
 358
 359 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 360                                compat_ulong_t addr, compat_ulong_t data);
 361 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
 362                                   compat_long_t addr, compat_long_t data);
 363
 364 /*
 365  * epoll (fs/eventpoll.c) compat bits follow ...
 366  */
 367 struct epoll_event;
 368 #define compat_epoll_event      epoll_event
 369 asmlinkage long compat_sys_epoll_pwait(int epfd,
 370                         struct compat_epoll_event __user *events,
 371                         int maxevents, int timeout,
 372                         const compat_sigset_t __user *sigmask,
 373                         compat_size_t sigsetsize);
 374
 375 asmlinkage long compat_sys_utime(const char __user *filename,
 376                                  struct compat_utimbuf __user *t);
 377 asmlinkage long compat_sys_utimensat(unsigned int dfd,
 378                                      const char __user *filename,
 379                                      struct compat_timespec __user *t,
 380                                      int flags);
 381
 382 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
 383 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
 384 asmlinkage long compat_sys_signalfd(int ufd,
 385                                     const compat_sigset_t __user *sigmask,
 386                                     compat_size_t sigsetsize);
 387 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
 388                                    const struct compat_itimerspec __user *utmr,
 389                                    struct compat_itimerspec __user *otmr);
 390 asmlinkage long compat_sys_timerfd_gettime(int ufd,
 391                                    struct compat_itimerspec __user *otmr);
 392
 393 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
 394                                       __u32 __user *pages,
 395                                       const int __user *nodes,
 396                                       int __user *status,
 397                                       int flags);
 398 asmlinkage long compat_sys_futimesat(unsigned int dfd,
 399                                      const char __user *filename,
 400                                      struct compat_timeval __user *t);
 401 asmlinkage long compat_sys_utimes(const char __user *filename,
 402                                   struct compat_timeval __user *t);
 403 asmlinkage long compat_sys_newstat(const char __user *filename,
 404                                    struct compat_stat __user *statbuf);
 405 asmlinkage long compat_sys_newlstat(const char __user *filename,
 406                                     struct compat_stat __user *statbuf);
 407 asmlinkage long compat_sys_newfstatat(unsigned int dfd,
 408                                       const char __user *filename,
 409                                       struct compat_stat __user *statbuf,
 410                                       int flag);
 411 asmlinkage long compat_sys_newfstat(unsigned int fd,
 412                                     struct compat_stat __user *statbuf);
 413 asmlinkage long compat_sys_statfs(const char __user *pathname,
 414                                   struct compat_statfs __user *buf);
 415 asmlinkage long compat_sys_fstatfs(unsigned int fd,
 416                                    struct compat_statfs __user *buf);
 417 asmlinkage long compat_sys_statfs64(const char __user *pathname,
 418                                     compat_size_t sz,
 419                                     struct compat_statfs64 __user *buf);
 420 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
 421                                      struct compat_statfs64 __user *buf);
 422 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
 423                                    unsigned long arg);
 424 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
 425                                  unsigned long arg);
 426 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
 427 asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
 428                                         unsigned long min_nr,
 429                                         unsigned long nr,
 430                                         struct io_event __user *events,
 431                                         struct compat_timespec __user *timeout);
 432 asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
 433                                      u32 __user *iocb);
 434 asmlinkage long compat_sys_mount(const char __user *dev_name,
 435                                  const char __user *dir_name,
 436                                  const char __user *type, unsigned long flags,
 437                                  const void __user *data);
 438 asmlinkage long compat_sys_old_readdir(unsigned int fd,
 439                                        struct compat_old_linux_dirent __user *,
 440                                        unsigned int count);
 441 asmlinkage long compat_sys_getdents(unsigned int fd,
 442                                     struct compat_linux_dirent __user *dirent,
 443                                     unsigned int count);
 444 asmlinkage long compat_sys_getdents64(unsigned int fd,
 445                                       struct linux_dirent64 __user *dirent,
 446                                       unsigned int count);
 447 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
 448                                     unsigned int nr_segs, unsigned int flags);
 449 asmlinkage long compat_sys_open(const char __user *filename, int flags,
 450                                 umode_t mode);
 451 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
 452                                   int flags, umode_t mode);
 453 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
 454                                              struct file_handle __user *handle,
 455                                              int flags);
 456 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
 457                                     compat_ulong_t __user *outp,
 458                                     compat_ulong_t __user *exp,
 459                                     struct compat_timespec __user *tsp,
 460                                     void __user *sig);
 461 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 462                                  unsigned int nfds,
 463                                  struct compat_timespec __user *tsp,
 464                                  const compat_sigset_t __user *sigmask,
 465                                  compat_size_t sigsetsize);
 466 asmlinkage long compat_sys_signalfd4(int ufd,
 467                                      const compat_sigset_t __user *sigmask,
 468                                      compat_size_t sigsetsize, int flags);
 469 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
 470                                          compat_ulong_t __user *nmask,
 471                                          compat_ulong_t maxnode,
 472                                          compat_ulong_t addr,
 473                                          compat_ulong_t flags);
 474 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
 475                                          compat_ulong_t maxnode);
 476 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
 477                                  compat_ulong_t mode,
 478                                  compat_ulong_t __user *nmask,
 479                                  compat_ulong_t maxnode, compat_ulong_t flags);
 480
 481 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 482                                       char __user *optval, unsigned int optlen);
 483 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
 484                                    unsigned flags);
 485 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 486                                     unsigned vlen, unsigned int flags);
 487 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
 488                                    unsigned int flags);
 489 asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
 490                                 unsigned flags);
 491 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
 492                             unsigned flags, struct sockaddr __user *addr,
 493                             int __user *addrlen);
 494 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 495                                     unsigned vlen, unsigned int flags,
 496                                     struct compat_timespec __user *timeout);
 497 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
 498                                      struct compat_timespec __user *rmtp);
 499 asmlinkage long compat_sys_getitimer(int which,
 500                                      struct compat_itimerval __user *it);
 501 asmlinkage long compat_sys_setitimer(int which,
 502                                      struct compat_itimerval __user *in,
 503                                      struct compat_itimerval __user *out);
 504 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
 505 asmlinkage long compat_sys_setrlimit(unsigned int resource,
 506                                      struct compat_rlimit __user *rlim);
 507 asmlinkage long compat_sys_getrlimit(unsigned int resource,
 508                                      struct compat_rlimit __user *rlim);
 509 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
 510 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
 511                                      unsigned int len,
 512                                      compat_ulong_t __user *user_mask_ptr);
 513 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
 514                                      unsigned int len,
 515                                      compat_ulong_t __user *user_mask_ptr);
 516 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
 517                         struct compat_sigevent __user *timer_event_spec,
 518                         timer_t __user *created_timer_id);
 519 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
 520                                          struct compat_itimerspec __user *new,
 521                                          struct compat_itimerspec __user *old);
 522 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
 523                                  struct compat_itimerspec __user *setting);
 524 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
 525                                          struct compat_timespec __user *tp);
 526 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
 527                                          struct compat_timespec __user *tp);
 528 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
 529                                          struct compat_timex __user *tp);
 530 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
 531                                         struct compat_timespec __user *tp);
 532 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
 533                                            struct compat_timespec __user *rqtp,
 534                                            struct compat_timespec __user *rmtp);
 535 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
 536                 struct compat_siginfo __user *uinfo,
 537                 struct compat_timespec __user *uts, compat_size_t sigsetsize);
 538 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
 539                                          compat_size_t sigsetsize);
 540 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
 541 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
 542                                  unsigned long arg);
 543 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
 544                 struct compat_timespec __user *utime, u32 __user *uaddr2,
 545                 u32 val3);
 546 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 547                                       char __user *optval, int __user *optlen);
 548 asmlinkage long compat_sys_kexec_load(unsigned long entry,
 549                                       unsigned long nr_segments,
 550                                       struct compat_kexec_segment __user *,
 551                                       unsigned long flags);
 552 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
 553                         const struct compat_mq_attr __user *u_mqstat,
 554                         struct compat_mq_attr __user *u_omqstat);
 555 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
 556                         const struct compat_sigevent __user *u_notification);
 557 asmlinkage long compat_sys_mq_open(const char __user *u_name,
 558                         int oflag, compat_mode_t mode,
 559                         struct compat_mq_attr __user *u_attr);
 560 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
 561                         const char __user *u_msg_ptr,
 562                         size_t msg_len, unsigned int msg_prio,
 563                         const struct compat_timespec __user *u_abs_timeout);
 564 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
 565                         char __user *u_msg_ptr,
 566                         size_t msg_len, unsigned int __user *u_msg_prio,
 567                         const struct compat_timespec __user *u_abs_timeout);
 568 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
 569 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
 570
 571 extern ssize_t compat_rw_copy_check_uvector(int type,
 572                 const struct compat_iovec __user *uvector,
 573                 unsigned long nr_segs,
 574                 unsigned long fast_segs, struct iovec *fast_pointer,
 575                 struct iovec **ret_pointer);
 576
 577 extern void __user *compat_alloc_user_space(unsigned long len);
 578
 579 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
 580                 const struct compat_iovec __user *lvec,
 581                 unsigned long liovcnt, const struct compat_iovec __user *rvec,
 582                 unsigned long riovcnt, unsigned long flags);
 583 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
 584                 const struct compat_iovec __user *lvec,
 585                 unsigned long liovcnt, const struct compat_iovec __user *rvec,
 586                 unsigned long riovcnt, unsigned long flags);
 587
 588 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
 589                                     compat_off_t __user *offset, compat_size_t count);
 590
 591 #else
 592
 593 #define is_compat_task() (0)
 594
 595 #endif /* CONFIG_COMPAT */
 596 #endif /* _LINUX_COMPAT_H */