linux/include/linux/compat.h
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   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
  29typedef __compat_uid32_t        compat_uid_t;
  30typedef __compat_gid32_t        compat_gid_t;
  31
  32struct compat_sel_arg_struct;
  33struct rusage;
  34
  35struct compat_itimerspec {
  36        struct compat_timespec it_interval;
  37        struct compat_timespec it_value;
  38};
  39
  40struct compat_utimbuf {
  41        compat_time_t           actime;
  42        compat_time_t           modtime;
  43};
  44
  45struct compat_itimerval {
  46        struct compat_timeval   it_interval;
  47        struct compat_timeval   it_value;
  48};
  49
  50struct 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
  57struct 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
  86typedef 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 */
  93extern int get_compat_timespec(struct timespec *,
  94                               const struct compat_timespec __user *);
  95extern int put_compat_timespec(const struct timespec *,
  96                               struct compat_timespec __user *);
  97extern int get_compat_timeval(struct timeval *,
  98                              const struct compat_timeval __user *);
  99extern 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 */
 106extern int compat_get_timespec(struct timespec *, const void __user *);
 107extern int compat_put_timespec(const struct timespec *, void __user *);
 108extern int compat_get_timeval(struct timeval *, const void __user *);
 109extern int compat_put_timeval(const struct timeval *, void __user *);
 110
 111struct compat_iovec {
 112        compat_uptr_t   iov_base;
 113        compat_size_t   iov_len;
 114};
 115
 116struct compat_rlimit {
 117        compat_ulong_t  rlim_cur;
 118        compat_ulong_t  rlim_max;
 119};
 120
 121struct 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
 140extern int put_compat_rusage(const struct rusage *,
 141                             struct compat_rusage __user *);
 142
 143struct compat_siginfo;
 144
 145extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
 146                struct compat_siginfo __user *, int,
 147                struct compat_rusage __user *);
 148
 149struct compat_dirent {
 150        u32             d_ino;
 151        compat_off_t    d_off;
 152        u16             d_reclen;
 153        char            d_name[256];
 154};
 155
 156struct 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
 163typedef union compat_sigval {
 164        compat_int_t    sival_int;
 165        compat_uptr_t   sival_ptr;
 166} compat_sigval_t;
 167
 168#define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 169
 170typedef struct compat_sigevent {
 171        compat_sigval_t sigev_value;
 172        compat_int_t sigev_signo;
 173        compat_int_t sigev_notify;
 174        union {
 175                compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
 176                compat_int_t _tid;
 177
 178                struct {
 179                        compat_uptr_t _function;
 180                        compat_uptr_t _attribute;
 181                } _sigev_thread;
 182        } _sigev_un;
 183} compat_sigevent_t;
 184
 185struct compat_ifmap {
 186        compat_ulong_t mem_start;
 187        compat_ulong_t mem_end;
 188        unsigned short base_addr;
 189        unsigned char irq;
 190        unsigned char dma;
 191        unsigned char port;
 192};
 193
 194struct compat_if_settings {
 195        unsigned int type;      /* Type of physical device or protocol */
 196        unsigned int size;      /* Size of the data allocated by the caller */
 197        compat_uptr_t ifs_ifsu; /* union of pointers */
 198};
 199
 200struct compat_ifreq {
 201        union {
 202                char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
 203        } ifr_ifrn;
 204        union {
 205                struct  sockaddr ifru_addr;
 206                struct  sockaddr ifru_dstaddr;
 207                struct  sockaddr ifru_broadaddr;
 208                struct  sockaddr ifru_netmask;
 209                struct  sockaddr ifru_hwaddr;
 210                short   ifru_flags;
 211                compat_int_t    ifru_ivalue;
 212                compat_int_t    ifru_mtu;
 213                struct  compat_ifmap ifru_map;
 214                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 215                char    ifru_newname[IFNAMSIZ];
 216                compat_caddr_t  ifru_data;
 217                struct  compat_if_settings ifru_settings;
 218        } ifr_ifru;
 219};
 220
 221struct compat_ifconf {
 222        compat_int_t    ifc_len;                /* size of buffer */
 223        compat_caddr_t  ifcbuf;
 224};
 225
 226struct compat_robust_list {
 227        compat_uptr_t                   next;
 228};
 229
 230struct compat_robust_list_head {
 231        struct compat_robust_list       list;
 232        compat_long_t                   futex_offset;
 233        compat_uptr_t                   list_op_pending;
 234};
 235
 236struct compat_statfs;
 237struct compat_statfs64;
 238struct compat_old_linux_dirent;
 239struct compat_linux_dirent;
 240struct linux_dirent64;
 241struct compat_msghdr;
 242struct compat_mmsghdr;
 243struct compat_sysinfo;
 244struct compat_sysctl_args;
 245struct compat_kexec_segment;
 246struct compat_mq_attr;
 247struct compat_msgbuf;
 248
 249extern void compat_exit_robust_list(struct task_struct *curr);
 250
 251asmlinkage long
 252compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
 253                           compat_size_t len);
 254asmlinkage long
 255compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 256                           compat_size_t __user *len_ptr);
 257
 258#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
 259long compat_sys_semctl(int first, int second, int third, void __user *uptr);
 260long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
 261long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
 262                int version, void __user *uptr);
 263long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
 264                void __user *uptr);
 265#else
 266long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
 267long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
 268                compat_ssize_t msgsz, int msgflg);
 269long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
 270                compat_ssize_t msgsz, long msgtyp, int msgflg);
 271long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
 272#endif
 273long compat_sys_msgctl(int first, int second, void __user *uptr);
 274long compat_sys_shmctl(int first, int second, void __user *uptr);
 275long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
 276                unsigned nsems, const struct compat_timespec __user *timeout);
 277asmlinkage long compat_sys_keyctl(u32 option,
 278                              u32 arg2, u32 arg3, u32 arg4, u32 arg5);
 279asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
 280
 281asmlinkage ssize_t compat_sys_readv(unsigned long fd,
 282                const struct compat_iovec __user *vec, unsigned long vlen);
 283asmlinkage ssize_t compat_sys_writev(unsigned long fd,
 284                const struct compat_iovec __user *vec, unsigned long vlen);
 285asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
 286                const struct compat_iovec __user *vec,
 287                unsigned long vlen, u32 pos_low, u32 pos_high);
 288asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
 289                const struct compat_iovec __user *vec,
 290                unsigned long vlen, u32 pos_low, u32 pos_high);
 291
 292int compat_do_execve(char *filename, compat_uptr_t __user *argv,
 293                     compat_uptr_t __user *envp, struct pt_regs *regs);
 294
 295asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 296                compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 297                struct compat_timeval __user *tvp);
 298
 299asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
 300
 301asmlinkage long compat_sys_wait4(compat_pid_t pid,
 302                                 compat_uint_t __user *stat_addr, int options,
 303                                 struct compat_rusage __user *ru);
 304
 305#define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
 306
 307#define BITS_TO_COMPAT_LONGS(bits) \
 308        (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
 309
 310long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
 311                       unsigned long bitmap_size);
 312long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
 313                       unsigned long bitmap_size);
 314int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
 315int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
 316int get_compat_sigevent(struct sigevent *event,
 317                const struct compat_sigevent __user *u_event);
 318long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
 319                                  struct compat_siginfo __user *uinfo);
 320
 321static inline int compat_timeval_compare(struct compat_timeval *lhs,
 322                                        struct compat_timeval *rhs)
 323{
 324        if (lhs->tv_sec < rhs->tv_sec)
 325                return -1;
 326        if (lhs->tv_sec > rhs->tv_sec)
 327                return 1;
 328        return lhs->tv_usec - rhs->tv_usec;
 329}
 330
 331static inline int compat_timespec_compare(struct compat_timespec *lhs,
 332                                        struct compat_timespec *rhs)
 333{
 334        if (lhs->tv_sec < rhs->tv_sec)
 335                return -1;
 336        if (lhs->tv_sec > rhs->tv_sec)
 337                return 1;
 338        return lhs->tv_nsec - rhs->tv_nsec;
 339}
 340
 341extern int get_compat_itimerspec(struct itimerspec *dst,
 342                                 const struct compat_itimerspec __user *src);
 343extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
 344                                 const struct itimerspec *src);
 345
 346asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
 347                struct timezone __user *tz);
 348asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
 349                struct timezone __user *tz);
 350
 351asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
 352
 353extern int compat_printk(const char *fmt, ...);
 354extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
 355
 356asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
 357                compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
 358                const compat_ulong_t __user *new_nodes);
 359
 360extern int compat_ptrace_request(struct task_struct *child,
 361                                 compat_long_t request,
 362                                 compat_ulong_t addr, compat_ulong_t data);
 363
 364extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 365                               compat_ulong_t addr, compat_ulong_t data);
 366asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
 367                                  compat_long_t addr, compat_long_t data);
 368
 369/*
 370 * epoll (fs/eventpoll.c) compat bits follow ...
 371 */
 372struct epoll_event;
 373#define compat_epoll_event      epoll_event
 374asmlinkage long compat_sys_epoll_pwait(int epfd,
 375                        struct compat_epoll_event __user *events,
 376                        int maxevents, int timeout,
 377                        const compat_sigset_t __user *sigmask,
 378                        compat_size_t sigsetsize);
 379
 380asmlinkage long compat_sys_utime(const char __user *filename,
 381                                 struct compat_utimbuf __user *t);
 382asmlinkage long compat_sys_utimensat(unsigned int dfd,
 383                                     const char __user *filename,
 384                                     struct compat_timespec __user *t,
 385                                     int flags);
 386
 387asmlinkage long compat_sys_time(compat_time_t __user *tloc);
 388asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
 389asmlinkage long compat_sys_signalfd(int ufd,
 390                                    const compat_sigset_t __user *sigmask,
 391                                    compat_size_t sigsetsize);
 392asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
 393                                   const struct compat_itimerspec __user *utmr,
 394                                   struct compat_itimerspec __user *otmr);
 395asmlinkage long compat_sys_timerfd_gettime(int ufd,
 396                                   struct compat_itimerspec __user *otmr);
 397
 398asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
 399                                      __u32 __user *pages,
 400                                      const int __user *nodes,
 401                                      int __user *status,
 402                                      int flags);
 403asmlinkage long compat_sys_futimesat(unsigned int dfd,
 404                                     const char __user *filename,
 405                                     struct compat_timeval __user *t);
 406asmlinkage long compat_sys_utimes(const char __user *filename,
 407                                  struct compat_timeval __user *t);
 408asmlinkage long compat_sys_newstat(const char __user *filename,
 409                                   struct compat_stat __user *statbuf);
 410asmlinkage long compat_sys_newlstat(const char __user *filename,
 411                                    struct compat_stat __user *statbuf);
 412asmlinkage long compat_sys_newfstatat(unsigned int dfd,
 413                                      const char __user *filename,
 414                                      struct compat_stat __user *statbuf,
 415                                      int flag);
 416asmlinkage long compat_sys_newfstat(unsigned int fd,
 417                                    struct compat_stat __user *statbuf);
 418asmlinkage long compat_sys_statfs(const char __user *pathname,
 419                                  struct compat_statfs __user *buf);
 420asmlinkage long compat_sys_fstatfs(unsigned int fd,
 421                                   struct compat_statfs __user *buf);
 422asmlinkage long compat_sys_statfs64(const char __user *pathname,
 423                                    compat_size_t sz,
 424                                    struct compat_statfs64 __user *buf);
 425asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
 426                                     struct compat_statfs64 __user *buf);
 427asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
 428                                   unsigned long arg);
 429asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
 430                                 unsigned long arg);
 431asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
 432asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
 433                                        unsigned long min_nr,
 434                                        unsigned long nr,
 435                                        struct io_event __user *events,
 436                                        struct compat_timespec __user *timeout);
 437asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
 438                                     u32 __user *iocb);
 439asmlinkage long compat_sys_mount(const char __user *dev_name,
 440                                 const char __user *dir_name,
 441                                 const char __user *type, unsigned long flags,
 442                                 const void __user *data);
 443asmlinkage long compat_sys_old_readdir(unsigned int fd,
 444                                       struct compat_old_linux_dirent __user *,
 445                                       unsigned int count);
 446asmlinkage long compat_sys_getdents(unsigned int fd,
 447                                    struct compat_linux_dirent __user *dirent,
 448                                    unsigned int count);
 449asmlinkage long compat_sys_getdents64(unsigned int fd,
 450                                      struct linux_dirent64 __user *dirent,
 451                                      unsigned int count);
 452asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
 453                                    unsigned int nr_segs, unsigned int flags);
 454asmlinkage long compat_sys_open(const char __user *filename, int flags,
 455                                umode_t mode);
 456asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
 457                                  int flags, umode_t mode);
 458asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
 459                                             struct file_handle __user *handle,
 460                                             int flags);
 461asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
 462                                    compat_ulong_t __user *outp,
 463                                    compat_ulong_t __user *exp,
 464                                    struct compat_timespec __user *tsp,
 465                                    void __user *sig);
 466asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 467                                 unsigned int nfds,
 468                                 struct compat_timespec __user *tsp,
 469                                 const compat_sigset_t __user *sigmask,
 470                                 compat_size_t sigsetsize);
 471asmlinkage long compat_sys_signalfd4(int ufd,
 472                                     const compat_sigset_t __user *sigmask,
 473                                     compat_size_t sigsetsize, int flags);
 474asmlinkage long compat_sys_get_mempolicy(int __user *policy,
 475                                         compat_ulong_t __user *nmask,
 476                                         compat_ulong_t maxnode,
 477                                         compat_ulong_t addr,
 478                                         compat_ulong_t flags);
 479asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
 480                                         compat_ulong_t maxnode);
 481asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
 482                                 compat_ulong_t mode,
 483                                 compat_ulong_t __user *nmask,
 484                                 compat_ulong_t maxnode, compat_ulong_t flags);
 485
 486asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 487                                      char __user *optval, unsigned int optlen);
 488asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
 489                                   unsigned flags);
 490asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 491                                    unsigned vlen, unsigned int flags);
 492asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
 493                                   unsigned int flags);
 494asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
 495                                unsigned flags);
 496asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
 497                            unsigned flags, struct sockaddr __user *addr,
 498                            int __user *addrlen);
 499asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 500                                    unsigned vlen, unsigned int flags,
 501                                    struct compat_timespec __user *timeout);
 502asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
 503                                     struct compat_timespec __user *rmtp);
 504asmlinkage long compat_sys_getitimer(int which,
 505                                     struct compat_itimerval __user *it);
 506asmlinkage long compat_sys_setitimer(int which,
 507                                     struct compat_itimerval __user *in,
 508                                     struct compat_itimerval __user *out);
 509asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
 510asmlinkage long compat_sys_setrlimit(unsigned int resource,
 511                                     struct compat_rlimit __user *rlim);
 512asmlinkage long compat_sys_getrlimit(unsigned int resource,
 513                                     struct compat_rlimit __user *rlim);
 514asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
 515asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
 516                                     unsigned int len,
 517                                     compat_ulong_t __user *user_mask_ptr);
 518asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
 519                                     unsigned int len,
 520                                     compat_ulong_t __user *user_mask_ptr);
 521asmlinkage long compat_sys_timer_create(clockid_t which_clock,
 522                        struct compat_sigevent __user *timer_event_spec,
 523                        timer_t __user *created_timer_id);
 524asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
 525                                         struct compat_itimerspec __user *new,
 526                                         struct compat_itimerspec __user *old);
 527asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
 528                                 struct compat_itimerspec __user *setting);
 529asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
 530                                         struct compat_timespec __user *tp);
 531asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
 532                                         struct compat_timespec __user *tp);
 533asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
 534                                         struct compat_timex __user *tp);
 535asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
 536                                        struct compat_timespec __user *tp);
 537asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
 538                                           struct compat_timespec __user *rqtp,
 539                                           struct compat_timespec __user *rmtp);
 540asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
 541                struct compat_siginfo __user *uinfo,
 542                struct compat_timespec __user *uts, compat_size_t sigsetsize);
 543asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
 544                                         compat_size_t sigsetsize);
 545asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
 546asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
 547                                 unsigned long arg);
 548asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
 549                struct compat_timespec __user *utime, u32 __user *uaddr2,
 550                u32 val3);
 551asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 552                                      char __user *optval, int __user *optlen);
 553asmlinkage long compat_sys_kexec_load(unsigned long entry,
 554                                      unsigned long nr_segments,
 555                                      struct compat_kexec_segment __user *,
 556                                      unsigned long flags);
 557asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
 558                        const struct compat_mq_attr __user *u_mqstat,
 559                        struct compat_mq_attr __user *u_omqstat);
 560asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
 561                        const struct compat_sigevent __user *u_notification);
 562asmlinkage long compat_sys_mq_open(const char __user *u_name,
 563                        int oflag, compat_mode_t mode,
 564                        struct compat_mq_attr __user *u_attr);
 565asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
 566                        const char __user *u_msg_ptr,
 567                        size_t msg_len, unsigned int msg_prio,
 568                        const struct compat_timespec __user *u_abs_timeout);
 569asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
 570                        char __user *u_msg_ptr,
 571                        size_t msg_len, unsigned int __user *u_msg_prio,
 572                        const struct compat_timespec __user *u_abs_timeout);
 573asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
 574asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
 575
 576extern ssize_t compat_rw_copy_check_uvector(int type,
 577                const struct compat_iovec __user *uvector,
 578                unsigned long nr_segs,
 579                unsigned long fast_segs, struct iovec *fast_pointer,
 580                struct iovec **ret_pointer);
 581
 582extern void __user *compat_alloc_user_space(unsigned long len);
 583
 584asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
 585                const struct compat_iovec __user *lvec,
 586                unsigned long liovcnt, const struct compat_iovec __user *rvec,
 587                unsigned long riovcnt, unsigned long flags);
 588asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
 589                const struct compat_iovec __user *lvec,
 590                unsigned long liovcnt, const struct compat_iovec __user *rvec,
 591                unsigned long riovcnt, unsigned long flags);
 592
 593#else
 594
 595#define is_compat_task() (0)
 596
 597#endif /* CONFIG_COMPAT */
 598#endif /* _LINUX_COMPAT_H */
 599
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