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
  17 #include <asm/compat.h>
  18 #include <asm/siginfo.h>
  19 #include <asm/signal.h>
  20
  21 #define compat_jiffies_to_clock_t(x)    \
  22                 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
  23
  24 typedef __compat_uid32_t        compat_uid_t;
  25 typedef __compat_gid32_t        compat_gid_t;
  26
  27 struct compat_sel_arg_struct;
  28 struct rusage;
  29
  30 struct compat_itimerspec {
  31         struct compat_timespec it_interval;
  32         struct compat_timespec it_value;
  33 };
  34
  35 struct compat_utimbuf {
  36         compat_time_t           actime;
  37         compat_time_t           modtime;
  38 };
  39
  40 struct compat_itimerval {
  41         struct compat_timeval   it_interval;
  42         struct compat_timeval   it_value;
  43 };
  44
  45 struct compat_tms {
  46         compat_clock_t          tms_utime;
  47         compat_clock_t          tms_stime;
  48         compat_clock_t          tms_cutime;
  49         compat_clock_t          tms_cstime;
  50 };
  51
  52 struct compat_timex {
  53         compat_uint_t modes;
  54         compat_long_t offset;
  55         compat_long_t freq;
  56         compat_long_t maxerror;
  57         compat_long_t esterror;
  58         compat_int_t status;
  59         compat_long_t constant;
  60         compat_long_t precision;
  61         compat_long_t tolerance;
  62         struct compat_timeval time;
  63         compat_long_t tick;
  64         compat_long_t ppsfreq;
  65         compat_long_t jitter;
  66         compat_int_t shift;
  67         compat_long_t stabil;
  68         compat_long_t jitcnt;
  69         compat_long_t calcnt;
  70         compat_long_t errcnt;
  71         compat_long_t stbcnt;
  72         compat_int_t tai;
  73
  74         compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
  75         compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
  76         compat_int_t :32; compat_int_t :32; compat_int_t :32;
  77 };
  78
  79 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
  80
  81 typedef struct {
  82         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
  83 } compat_sigset_t;
  84
  85 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
  86 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
  87
  88 struct compat_iovec {
  89         compat_uptr_t   iov_base;
  90         compat_size_t   iov_len;
  91 };
  92
  93 struct compat_rlimit {
  94         compat_ulong_t  rlim_cur;
  95         compat_ulong_t  rlim_max;
  96 };
  97
  98 struct compat_rusage {
  99         struct compat_timeval ru_utime;
 100         struct compat_timeval ru_stime;
 101         compat_long_t   ru_maxrss;
 102         compat_long_t   ru_ixrss;
 103         compat_long_t   ru_idrss;
 104         compat_long_t   ru_isrss;
 105         compat_long_t   ru_minflt;
 106         compat_long_t   ru_majflt;
 107         compat_long_t   ru_nswap;
 108         compat_long_t   ru_inblock;
 109         compat_long_t   ru_oublock;
 110         compat_long_t   ru_msgsnd;
 111         compat_long_t   ru_msgrcv;
 112         compat_long_t   ru_nsignals;
 113         compat_long_t   ru_nvcsw;
 114         compat_long_t   ru_nivcsw;
 115 };
 116
 117 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
 118
 119 struct compat_siginfo;
 120
 121 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
 122                 struct compat_siginfo __user *, int,
 123                 struct compat_rusage __user *);
 124
 125 struct compat_dirent {
 126         u32             d_ino;
 127         compat_off_t    d_off;
 128         u16             d_reclen;
 129         char            d_name[256];
 130 };
 131
 132 struct compat_ustat {
 133         compat_daddr_t          f_tfree;
 134         compat_ino_t            f_tinode;
 135         char                    f_fname[6];
 136         char                    f_fpack[6];
 137 };
 138
 139 typedef union compat_sigval {
 140         compat_int_t    sival_int;
 141         compat_uptr_t   sival_ptr;
 142 } compat_sigval_t;
 143
 144 #define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 145
 146 typedef struct compat_sigevent {
 147         compat_sigval_t sigev_value;
 148         compat_int_t sigev_signo;
 149         compat_int_t sigev_notify;
 150         union {
 151                 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
 152                 compat_int_t _tid;
 153
 154                 struct {
 155                         compat_uptr_t _function;
 156                         compat_uptr_t _attribute;
 157                 } _sigev_thread;
 158         } _sigev_un;
 159 } compat_sigevent_t;
 160
 161 struct compat_ifmap {
 162         compat_ulong_t mem_start;
 163         compat_ulong_t mem_end;
 164         unsigned short base_addr;
 165         unsigned char irq;
 166         unsigned char dma;
 167         unsigned char port;
 168 };
 169
 170 struct compat_if_settings
 171 {
 172         unsigned int type;      /* Type of physical device or protocol */
 173         unsigned int size;      /* Size of the data allocated by the caller */
 174         compat_uptr_t ifs_ifsu; /* union of pointers */
 175 };
 176
 177 struct compat_ifreq {
 178         union {
 179                 char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
 180         } ifr_ifrn;
 181         union {
 182                 struct  sockaddr ifru_addr;
 183                 struct  sockaddr ifru_dstaddr;
 184                 struct  sockaddr ifru_broadaddr;
 185                 struct  sockaddr ifru_netmask;
 186                 struct  sockaddr ifru_hwaddr;
 187                 short   ifru_flags;
 188                 compat_int_t    ifru_ivalue;
 189                 compat_int_t    ifru_mtu;
 190                 struct  compat_ifmap ifru_map;
 191                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 192                 char    ifru_newname[IFNAMSIZ];
 193                 compat_caddr_t  ifru_data;
 194                 struct  compat_if_settings ifru_settings;
 195         } ifr_ifru;
 196 };
 197
 198 struct compat_ifconf {
 199         compat_int_t    ifc_len;                        /* size of buffer       */
 200         compat_caddr_t  ifcbuf;
 201 };
 202
 203 struct compat_robust_list {
 204         compat_uptr_t                   next;
 205 };
 206
 207 struct compat_robust_list_head {
 208         struct compat_robust_list       list;
 209         compat_long_t                   futex_offset;
 210         compat_uptr_t                   list_op_pending;
 211 };
 212
 213 struct compat_statfs;
 214 struct compat_statfs64;
 215 struct compat_old_linux_dirent;
 216 struct compat_linux_dirent;
 217 struct linux_dirent64;
 218 struct compat_msghdr;
 219 struct compat_mmsghdr;
 220 struct compat_sysinfo;
 221 struct compat_sysctl_args;
 222 struct compat_kexec_segment;
 223 struct compat_mq_attr;
 224
 225 extern void compat_exit_robust_list(struct task_struct *curr);
 226
 227 asmlinkage long
 228 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
 229                            compat_size_t len);
 230 asmlinkage long
 231 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 232                            compat_size_t __user *len_ptr);
 233
 234 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
 235 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
 236 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
 237                 int version, void __user *uptr);
 238 long compat_sys_msgctl(int first, int second, void __user *uptr);
 239 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
 240                 void __user *uptr);
 241 long compat_sys_shmctl(int first, int second, void __user *uptr);
 242 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
 243                 unsigned nsems, const struct compat_timespec __user *timeout);
 244 asmlinkage long compat_sys_keyctl(u32 option,
 245                               u32 arg2, u32 arg3, u32 arg4, u32 arg5);
 246 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
 247
 248 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
 249                 const struct compat_iovec __user *vec, unsigned long vlen);
 250 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
 251                 const struct compat_iovec __user *vec, unsigned long vlen);
 252 asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
 253                 const struct compat_iovec __user *vec,
 254                 unsigned long vlen, u32 pos_low, u32 pos_high);
 255 asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
 256                 const struct compat_iovec __user *vec,
 257                 unsigned long vlen, u32 pos_low, u32 pos_high);
 258
 259 int compat_do_execve(char * filename, compat_uptr_t __user *argv,
 260                 compat_uptr_t __user *envp, struct pt_regs * regs);
 261
 262 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 263                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 264                 struct compat_timeval __user *tvp);
 265
 266 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
 267
 268 asmlinkage long compat_sys_wait4(compat_pid_t pid,
 269                                  compat_uint_t __user *stat_addr, int options,
 270                                  struct compat_rusage __user *ru);
 271
 272 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
 273
 274 #define BITS_TO_COMPAT_LONGS(bits) \
 275         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
 276
 277 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
 278                        unsigned long bitmap_size);
 279 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
 280                        unsigned long bitmap_size);
 281 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
 282 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
 283 int get_compat_sigevent(struct sigevent *event,
 284                 const struct compat_sigevent __user *u_event);
 285 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
 286                                   struct compat_siginfo __user *uinfo);
 287
 288 static inline int compat_timeval_compare(struct compat_timeval *lhs,
 289                                         struct compat_timeval *rhs)
 290 {
 291         if (lhs->tv_sec < rhs->tv_sec)
 292                 return -1;
 293         if (lhs->tv_sec > rhs->tv_sec)
 294                 return 1;
 295         return lhs->tv_usec - rhs->tv_usec;
 296 }
 297
 298 static inline int compat_timespec_compare(struct compat_timespec *lhs,
 299                                         struct compat_timespec *rhs)
 300 {
 301         if (lhs->tv_sec < rhs->tv_sec)
 302                 return -1;
 303         if (lhs->tv_sec > rhs->tv_sec)
 304                 return 1;
 305         return lhs->tv_nsec - rhs->tv_nsec;
 306 }
 307
 308 extern int get_compat_itimerspec(struct itimerspec *dst,
 309                                  const struct compat_itimerspec __user *src);
 310 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
 311                                  const struct itimerspec *src);
 312
 313 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
 314                 struct timezone __user *tz);
 315 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
 316                 struct timezone __user *tz);
 317
 318 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
 319
 320 extern int compat_printk(const char *fmt, ...);
 321 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
 322
 323 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
 324                 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
 325                 const compat_ulong_t __user *new_nodes);
 326
 327 extern int compat_ptrace_request(struct task_struct *child,
 328                                  compat_long_t request,
 329                                  compat_ulong_t addr, compat_ulong_t data);
 330
 331 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 332                                compat_ulong_t addr, compat_ulong_t data);
 333 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
 334                                   compat_long_t addr, compat_long_t data);
 335
 336 /*
 337  * epoll (fs/eventpoll.c) compat bits follow ...
 338  */
 339 struct epoll_event;
 340 #define compat_epoll_event      epoll_event
 341 asmlinkage long compat_sys_epoll_pwait(int epfd,
 342                         struct compat_epoll_event __user *events,
 343                         int maxevents, int timeout,
 344                         const compat_sigset_t __user *sigmask,
 345                         compat_size_t sigsetsize);
 346
 347 asmlinkage long compat_sys_utime(const char __user *filename,
 348                                  struct compat_utimbuf __user *t);
 349 asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename,
 350                                 struct compat_timespec __user *t, int flags);
 351
 352 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
 353 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
 354 asmlinkage long compat_sys_signalfd(int ufd,
 355                                 const compat_sigset_t __user *sigmask,
 356                                 compat_size_t sigsetsize);
 357 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
 358                                    const struct compat_itimerspec __user *utmr,
 359                                    struct compat_itimerspec __user *otmr);
 360 asmlinkage long compat_sys_timerfd_gettime(int ufd,
 361                                    struct compat_itimerspec __user *otmr);
 362
 363 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
 364                                       __u32 __user *pages,
 365                                       const int __user *nodes,
 366                                       int __user *status,
 367                                       int flags);
 368 asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename,
 369                                      struct compat_timeval __user *t);
 370 asmlinkage long compat_sys_utimes(const char __user *filename,
 371                                   struct compat_timeval __user *t);
 372 asmlinkage long compat_sys_newstat(const char __user * filename,
 373                                    struct compat_stat __user *statbuf);
 374 asmlinkage long compat_sys_newlstat(const char __user * filename,
 375                                     struct compat_stat __user *statbuf);
 376 asmlinkage long compat_sys_newfstatat(unsigned int dfd, const char __user * filename,
 377                                       struct compat_stat __user *statbuf,
 378                                       int flag);
 379 asmlinkage long compat_sys_newfstat(unsigned int fd,
 380                                     struct compat_stat __user * statbuf);
 381 asmlinkage long compat_sys_statfs(const char __user *pathname,
 382                                   struct compat_statfs __user *buf);
 383 asmlinkage long compat_sys_fstatfs(unsigned int fd,
 384                                    struct compat_statfs __user *buf);
 385 asmlinkage long compat_sys_statfs64(const char __user *pathname,
 386                                     compat_size_t sz,
 387                                     struct compat_statfs64 __user *buf);
 388 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
 389                                      struct compat_statfs64 __user *buf);
 390 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
 391                                    unsigned long arg);
 392 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
 393                                  unsigned long arg);
 394 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
 395 asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
 396                                         unsigned long min_nr,
 397                                         unsigned long nr,
 398                                         struct io_event __user *events,
 399                                         struct compat_timespec __user *timeout);
 400 asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
 401                                      u32 __user *iocb);
 402 asmlinkage long compat_sys_mount(const char __user * dev_name,
 403                                  const char __user * dir_name,
 404                                  const char __user * type, unsigned long flags,
 405                                  const void __user * data);
 406 asmlinkage long compat_sys_old_readdir(unsigned int fd,
 407                                        struct compat_old_linux_dirent __user *,
 408                                        unsigned int count);
 409 asmlinkage long compat_sys_getdents(unsigned int fd,
 410                                     struct compat_linux_dirent __user *dirent,
 411                                     unsigned int count);
 412 asmlinkage long compat_sys_getdents64(unsigned int fd,
 413                                       struct linux_dirent64 __user * dirent,
 414                                       unsigned int count);
 415 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
 416                                     unsigned int nr_segs, unsigned int flags);
 417 asmlinkage long compat_sys_open(const char __user *filename, int flags,
 418                                 int mode);
 419 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
 420                                   int flags, int mode);
 421 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
 422                                              struct file_handle __user *handle,
 423                                              int flags);
 424 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
 425                                     compat_ulong_t __user *outp,
 426                                     compat_ulong_t __user *exp,
 427                                     struct compat_timespec __user *tsp,
 428                                     void __user *sig);
 429 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 430                                  unsigned int nfds,
 431                                  struct compat_timespec __user *tsp,
 432                                  const compat_sigset_t __user *sigmask,
 433                                  compat_size_t sigsetsize);
 434 #if (defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)) && !defined(CONFIG_NFSD_DEPRECATED)
 435 union compat_nfsctl_res;
 436 struct compat_nfsctl_arg;
 437 asmlinkage long compat_sys_nfsservctl(int cmd,
 438                                       struct compat_nfsctl_arg __user *arg,
 439                                       union compat_nfsctl_res __user *res);
 440 #else
 441 long asmlinkage compat_sys_nfsservctl(int cmd, void *notused, void *notused2);
 442 #endif
 443 asmlinkage long compat_sys_signalfd4(int ufd,
 444                                      const compat_sigset_t __user *sigmask,
 445                                      compat_size_t sigsetsize, int flags);
 446 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
 447                                          compat_ulong_t __user *nmask,
 448                                          compat_ulong_t maxnode,
 449                                          compat_ulong_t addr,
 450                                          compat_ulong_t flags);
 451 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
 452                                          compat_ulong_t maxnode);
 453 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
 454                                  compat_ulong_t mode,
 455                                  compat_ulong_t __user *nmask,
 456                                  compat_ulong_t maxnode, compat_ulong_t flags);
 457
 458 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 459                                       char __user *optval, unsigned int optlen);
 460 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
 461                                    unsigned flags);
 462 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
 463                                    unsigned int flags);
 464 asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
 465                                 unsigned flags);
 466 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
 467                             unsigned flags, struct sockaddr __user *addr,
 468                             int __user *addrlen);
 469 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 470                                     unsigned vlen, unsigned int flags,
 471                                     struct compat_timespec __user *timeout);
 472 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
 473                                      struct compat_timespec __user *rmtp);
 474 asmlinkage long compat_sys_getitimer(int which,
 475                                      struct compat_itimerval __user *it);
 476 asmlinkage long compat_sys_setitimer(int which,
 477                                      struct compat_itimerval __user *in,
 478                                      struct compat_itimerval __user *out);
 479 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
 480 asmlinkage long compat_sys_setrlimit(unsigned int resource,
 481                                      struct compat_rlimit __user *rlim);
 482 asmlinkage long compat_sys_getrlimit (unsigned int resource,
 483                                       struct compat_rlimit __user *rlim);
 484 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
 485 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
 486                                      unsigned int len,
 487                                      compat_ulong_t __user *user_mask_ptr);
 488 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
 489                                      unsigned int len,
 490                                      compat_ulong_t __user *user_mask_ptr);
 491 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
 492                         struct compat_sigevent __user *timer_event_spec,
 493                         timer_t __user *created_timer_id);
 494 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
 495                                          struct compat_itimerspec __user *new,
 496                                          struct compat_itimerspec __user *old);
 497 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
 498                                  struct compat_itimerspec __user *setting);
 499 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
 500                                          struct compat_timespec __user *tp);
 501 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
 502                                          struct compat_timespec __user *tp);
 503 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
 504                                          struct compat_timex __user *tp);
 505 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
 506                                         struct compat_timespec __user *tp);
 507 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
 508                                            struct compat_timespec __user *rqtp,
 509                                            struct compat_timespec __user *rmtp);
 510 asmlinkage long compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
 511                 struct compat_siginfo __user *uinfo,
 512                 struct compat_timespec __user *uts, compat_size_t sigsetsize);
 513 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
 514                                          compat_size_t sigsetsize);
 515 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
 516 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
 517                                  unsigned long arg);
 518 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
 519                 struct compat_timespec __user *utime, u32 __user *uaddr2,
 520                 u32 val3);
 521 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 522                                       char __user *optval, int __user *optlen);
 523 asmlinkage long compat_sys_kexec_load(unsigned long entry,
 524                                       unsigned long nr_segments,
 525                                       struct compat_kexec_segment __user *,
 526                                       unsigned long flags);
 527 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
 528                         const struct compat_mq_attr __user *u_mqstat,
 529                         struct compat_mq_attr __user *u_omqstat);
 530 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
 531                         const struct compat_sigevent __user *u_notification);
 532 asmlinkage long compat_sys_mq_open(const char __user *u_name,
 533                         int oflag, compat_mode_t mode,
 534                         struct compat_mq_attr __user *u_attr);
 535 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
 536                         const char __user *u_msg_ptr,
 537                         size_t msg_len, unsigned int msg_prio,
 538                         const struct compat_timespec __user *u_abs_timeout);
 539 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
 540                         char __user *u_msg_ptr,
 541                         size_t msg_len, unsigned int __user *u_msg_prio,
 542                         const struct compat_timespec __user *u_abs_timeout);
 543 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
 544 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
 545
 546 extern ssize_t compat_rw_copy_check_uvector(int type,
 547                 const struct compat_iovec __user *uvector, unsigned long nr_segs,
 548                 unsigned long fast_segs, struct iovec *fast_pointer,
 549                 struct iovec **ret_pointer);
 550
 551 extern void __user *compat_alloc_user_space(unsigned long len);
 552
 553 #endif /* CONFIG_COMPAT */
 554 #endif /* _LINUX_COMPAT_H */