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#ifndef __SC_DELOUSE
  27#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
  28#endif
  29
  30#define __SC_CCAST1(t1, a1)      __SC_DELOUSE(t1,a1)
  31#define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__)
  32#define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__)
  33#define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__)
  34#define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__)
  35#define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__)
  36#define COMPAT_SYSCALL_DEFINE1(name, ...) \
  37        COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
  38#define COMPAT_SYSCALL_DEFINE2(name, ...) \
  39        COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
  40#define COMPAT_SYSCALL_DEFINE3(name, ...) \
  41        COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
  42#define COMPAT_SYSCALL_DEFINE4(name, ...) \
  43        COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
  44#define COMPAT_SYSCALL_DEFINE5(name, ...) \
  45        COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
  46#define COMPAT_SYSCALL_DEFINE6(name, ...) \
  47        COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
  48
  49#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
  50
  51#define COMPAT_SYSCALL_DEFINEx(x, name, ...)                            \
  52        asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__));    \
  53        static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__));     \
  54        asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__))     \
  55        {                                                               \
  56                return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__)); \
  57        }                                                               \
  58        SYSCALL_ALIAS(compat_sys##name, compat_SyS##name);              \
  59        static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__))
  60
  61#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */
  62
  63#define COMPAT_SYSCALL_DEFINEx(x, name, ...)                            \
  64        asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__))
  65
  66#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */
  67
  68#ifndef compat_user_stack_pointer
  69#define compat_user_stack_pointer() current_user_stack_pointer()
  70#endif
  71#ifdef CONFIG_GENERIC_SIGALTSTACK
  72#ifndef compat_sigaltstack      /* we'll need that for MIPS */
  73typedef struct compat_sigaltstack {
  74        compat_uptr_t                   ss_sp;
  75        int                             ss_flags;
  76        compat_size_t                   ss_size;
  77} compat_stack_t;
  78#endif
  79#endif
  80
  81#define compat_jiffies_to_clock_t(x)    \
  82                (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
  83
  84typedef __compat_uid32_t        compat_uid_t;
  85typedef __compat_gid32_t        compat_gid_t;
  86
  87struct compat_sel_arg_struct;
  88struct rusage;
  89
  90struct compat_itimerspec {
  91        struct compat_timespec it_interval;
  92        struct compat_timespec it_value;
  93};
  94
  95struct compat_utimbuf {
  96        compat_time_t           actime;
  97        compat_time_t           modtime;
  98};
  99
 100struct compat_itimerval {
 101        struct compat_timeval   it_interval;
 102        struct compat_timeval   it_value;
 103};
 104
 105struct compat_tms {
 106        compat_clock_t          tms_utime;
 107        compat_clock_t          tms_stime;
 108        compat_clock_t          tms_cutime;
 109        compat_clock_t          tms_cstime;
 110};
 111
 112struct compat_timex {
 113        compat_uint_t modes;
 114        compat_long_t offset;
 115        compat_long_t freq;
 116        compat_long_t maxerror;
 117        compat_long_t esterror;
 118        compat_int_t status;
 119        compat_long_t constant;
 120        compat_long_t precision;
 121        compat_long_t tolerance;
 122        struct compat_timeval time;
 123        compat_long_t tick;
 124        compat_long_t ppsfreq;
 125        compat_long_t jitter;
 126        compat_int_t shift;
 127        compat_long_t stabil;
 128        compat_long_t jitcnt;
 129        compat_long_t calcnt;
 130        compat_long_t errcnt;
 131        compat_long_t stbcnt;
 132        compat_int_t tai;
 133
 134        compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
 135        compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
 136        compat_int_t:32; compat_int_t:32; compat_int_t:32;
 137};
 138
 139#define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
 140
 141typedef struct {
 142        compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
 143} compat_sigset_t;
 144
 145/*
 146 * These functions operate strictly on struct compat_time*
 147 */
 148extern int get_compat_timespec(struct timespec *,
 149                               const struct compat_timespec __user *);
 150extern int put_compat_timespec(const struct timespec *,
 151                               struct compat_timespec __user *);
 152extern int get_compat_timeval(struct timeval *,
 153                              const struct compat_timeval __user *);
 154extern int put_compat_timeval(const struct timeval *,
 155                              struct compat_timeval __user *);
 156/*
 157 * These functions operate on 32- or 64-bit specs depending on
 158 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
 159 * naming as compat_get/put_ rather than get/put_compat_.
 160 */
 161extern int compat_get_timespec(struct timespec *, const void __user *);
 162extern int compat_put_timespec(const struct timespec *, void __user *);
 163extern int compat_get_timeval(struct timeval *, const void __user *);
 164extern int compat_put_timeval(const struct timeval *, void __user *);
 165
 166struct compat_iovec {
 167        compat_uptr_t   iov_base;
 168        compat_size_t   iov_len;
 169};
 170
 171struct compat_rlimit {
 172        compat_ulong_t  rlim_cur;
 173        compat_ulong_t  rlim_max;
 174};
 175
 176struct compat_rusage {
 177        struct compat_timeval ru_utime;
 178        struct compat_timeval ru_stime;
 179        compat_long_t   ru_maxrss;
 180        compat_long_t   ru_ixrss;
 181        compat_long_t   ru_idrss;
 182        compat_long_t   ru_isrss;
 183        compat_long_t   ru_minflt;
 184        compat_long_t   ru_majflt;
 185        compat_long_t   ru_nswap;
 186        compat_long_t   ru_inblock;
 187        compat_long_t   ru_oublock;
 188        compat_long_t   ru_msgsnd;
 189        compat_long_t   ru_msgrcv;
 190        compat_long_t   ru_nsignals;
 191        compat_long_t   ru_nvcsw;
 192        compat_long_t   ru_nivcsw;
 193};
 194
 195extern int put_compat_rusage(const struct rusage *,
 196                             struct compat_rusage __user *);
 197
 198struct compat_siginfo;
 199
 200extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
 201                struct compat_siginfo __user *, int,
 202                struct compat_rusage __user *);
 203
 204struct compat_dirent {
 205        u32             d_ino;
 206        compat_off_t    d_off;
 207        u16             d_reclen;
 208        char            d_name[256];
 209};
 210
 211struct compat_ustat {
 212        compat_daddr_t          f_tfree;
 213        compat_ino_t            f_tinode;
 214        char                    f_fname[6];
 215        char                    f_fpack[6];
 216};
 217
 218#define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 219
 220typedef struct compat_sigevent {
 221        compat_sigval_t sigev_value;
 222        compat_int_t sigev_signo;
 223        compat_int_t sigev_notify;
 224        union {
 225                compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
 226                compat_int_t _tid;
 227
 228                struct {
 229                        compat_uptr_t _function;
 230                        compat_uptr_t _attribute;
 231                } _sigev_thread;
 232        } _sigev_un;
 233} compat_sigevent_t;
 234
 235struct compat_ifmap {
 236        compat_ulong_t mem_start;
 237        compat_ulong_t mem_end;
 238        unsigned short base_addr;
 239        unsigned char irq;
 240        unsigned char dma;
 241        unsigned char port;
 242};
 243
 244struct compat_if_settings {
 245        unsigned int type;      /* Type of physical device or protocol */
 246        unsigned int size;      /* Size of the data allocated by the caller */
 247        compat_uptr_t ifs_ifsu; /* union of pointers */
 248};
 249
 250struct compat_ifreq {
 251        union {
 252                char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
 253        } ifr_ifrn;
 254        union {
 255                struct  sockaddr ifru_addr;
 256                struct  sockaddr ifru_dstaddr;
 257                struct  sockaddr ifru_broadaddr;
 258                struct  sockaddr ifru_netmask;
 259                struct  sockaddr ifru_hwaddr;
 260                short   ifru_flags;
 261                compat_int_t    ifru_ivalue;
 262                compat_int_t    ifru_mtu;
 263                struct  compat_ifmap ifru_map;
 264                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 265                char    ifru_newname[IFNAMSIZ];
 266                compat_caddr_t  ifru_data;
 267                struct  compat_if_settings ifru_settings;
 268        } ifr_ifru;
 269};
 270
 271struct compat_ifconf {
 272        compat_int_t    ifc_len;                /* size of buffer */
 273        compat_caddr_t  ifcbuf;
 274};
 275
 276struct compat_robust_list {
 277        compat_uptr_t                   next;
 278};
 279
 280struct compat_robust_list_head {
 281        struct compat_robust_list       list;
 282        compat_long_t                   futex_offset;
 283        compat_uptr_t                   list_op_pending;
 284};
 285
 286struct compat_statfs;
 287struct compat_statfs64;
 288struct compat_old_linux_dirent;
 289struct compat_linux_dirent;
 290struct linux_dirent64;
 291struct compat_msghdr;
 292struct compat_mmsghdr;
 293struct compat_sysinfo;
 294struct compat_sysctl_args;
 295struct compat_kexec_segment;
 296struct compat_mq_attr;
 297struct compat_msgbuf;
 298
 299extern void compat_exit_robust_list(struct task_struct *curr);
 300
 301asmlinkage long
 302compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
 303                           compat_size_t len);
 304asmlinkage long
 305compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 306                           compat_size_t __user *len_ptr);
 307
 308#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
 309long compat_sys_semctl(int first, int second, int third, void __user *uptr);
 310long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
 311long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
 312                int version, void __user *uptr);
 313long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
 314                void __user *uptr);
 315#else
 316long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
 317long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
 318                compat_ssize_t msgsz, int msgflg);
 319long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
 320                compat_ssize_t msgsz, long msgtyp, int msgflg);
 321long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
 322#endif
 323long compat_sys_msgctl(int first, int second, void __user *uptr);
 324long compat_sys_shmctl(int first, int second, void __user *uptr);
 325long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
 326                unsigned nsems, const struct compat_timespec __user *timeout);
 327asmlinkage long compat_sys_keyctl(u32 option,
 328                              u32 arg2, u32 arg3, u32 arg4, u32 arg5);
 329asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
 330
 331asmlinkage ssize_t compat_sys_readv(unsigned long fd,
 332                const struct compat_iovec __user *vec, unsigned long vlen);
 333asmlinkage ssize_t compat_sys_writev(unsigned long fd,
 334                const struct compat_iovec __user *vec, unsigned long vlen);
 335asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
 336                const struct compat_iovec __user *vec,
 337                unsigned long vlen, u32 pos_low, u32 pos_high);
 338asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
 339                const struct compat_iovec __user *vec,
 340                unsigned long vlen, u32 pos_low, u32 pos_high);
 341
 342asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
 343                     const compat_uptr_t __user *envp);
 344
 345asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 346                compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 347                struct compat_timeval __user *tvp);
 348
 349asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
 350
 351asmlinkage long compat_sys_wait4(compat_pid_t pid,
 352                                 compat_uint_t __user *stat_addr, int options,
 353                                 struct compat_rusage __user *ru);
 354
 355#define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
 356
 357#define BITS_TO_COMPAT_LONGS(bits) \
 358        (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
 359
 360long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
 361                       unsigned long bitmap_size);
 362long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
 363                       unsigned long bitmap_size);
 364int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
 365int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
 366int get_compat_sigevent(struct sigevent *event,
 367                const struct compat_sigevent __user *u_event);
 368long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
 369                                  struct compat_siginfo __user *uinfo);
 370
 371static inline int compat_timeval_compare(struct compat_timeval *lhs,
 372                                        struct compat_timeval *rhs)
 373{
 374        if (lhs->tv_sec < rhs->tv_sec)
 375                return -1;
 376        if (lhs->tv_sec > rhs->tv_sec)
 377                return 1;
 378        return lhs->tv_usec - rhs->tv_usec;
 379}
 380
 381static inline int compat_timespec_compare(struct compat_timespec *lhs,
 382                                        struct compat_timespec *rhs)
 383{
 384        if (lhs->tv_sec < rhs->tv_sec)
 385                return -1;
 386        if (lhs->tv_sec > rhs->tv_sec)
 387                return 1;
 388        return lhs->tv_nsec - rhs->tv_nsec;
 389}
 390
 391extern int get_compat_itimerspec(struct itimerspec *dst,
 392                                 const struct compat_itimerspec __user *src);
 393extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
 394                                 const struct itimerspec *src);
 395
 396asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
 397                struct timezone __user *tz);
 398asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
 399                struct timezone __user *tz);
 400
 401asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
 402
 403extern int compat_printk(const char *fmt, ...);
 404extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
 405
 406asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
 407                compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
 408                const compat_ulong_t __user *new_nodes);
 409
 410extern int compat_ptrace_request(struct task_struct *child,
 411                                 compat_long_t request,
 412                                 compat_ulong_t addr, compat_ulong_t data);
 413
 414extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 415                               compat_ulong_t addr, compat_ulong_t data);
 416asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
 417                                  compat_long_t addr, compat_long_t data);
 418
 419/*
 420 * epoll (fs/eventpoll.c) compat bits follow ...
 421 */
 422struct epoll_event;
 423#define compat_epoll_event      epoll_event
 424asmlinkage long compat_sys_epoll_pwait(int epfd,
 425                        struct compat_epoll_event __user *events,
 426                        int maxevents, int timeout,
 427                        const compat_sigset_t __user *sigmask,
 428                        compat_size_t sigsetsize);
 429
 430asmlinkage long compat_sys_utime(const char __user *filename,
 431                                 struct compat_utimbuf __user *t);
 432asmlinkage long compat_sys_utimensat(unsigned int dfd,
 433                                     const char __user *filename,
 434                                     struct compat_timespec __user *t,
 435                                     int flags);
 436
 437asmlinkage long compat_sys_time(compat_time_t __user *tloc);
 438asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
 439asmlinkage long compat_sys_signalfd(int ufd,
 440                                    const compat_sigset_t __user *sigmask,
 441                                    compat_size_t sigsetsize);
 442asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
 443                                   const struct compat_itimerspec __user *utmr,
 444                                   struct compat_itimerspec __user *otmr);
 445asmlinkage long compat_sys_timerfd_gettime(int ufd,
 446                                   struct compat_itimerspec __user *otmr);
 447
 448asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
 449                                      __u32 __user *pages,
 450                                      const int __user *nodes,
 451                                      int __user *status,
 452                                      int flags);
 453asmlinkage long compat_sys_futimesat(unsigned int dfd,
 454                                     const char __user *filename,
 455                                     struct compat_timeval __user *t);
 456asmlinkage long compat_sys_utimes(const char __user *filename,
 457                                  struct compat_timeval __user *t);
 458asmlinkage long compat_sys_newstat(const char __user *filename,
 459                                   struct compat_stat __user *statbuf);
 460asmlinkage long compat_sys_newlstat(const char __user *filename,
 461                                    struct compat_stat __user *statbuf);
 462asmlinkage long compat_sys_newfstatat(unsigned int dfd,
 463                                      const char __user *filename,
 464                                      struct compat_stat __user *statbuf,
 465                                      int flag);
 466asmlinkage long compat_sys_newfstat(unsigned int fd,
 467                                    struct compat_stat __user *statbuf);
 468asmlinkage long compat_sys_statfs(const char __user *pathname,
 469                                  struct compat_statfs __user *buf);
 470asmlinkage long compat_sys_fstatfs(unsigned int fd,
 471                                   struct compat_statfs __user *buf);
 472asmlinkage long compat_sys_statfs64(const char __user *pathname,
 473                                    compat_size_t sz,
 474                                    struct compat_statfs64 __user *buf);
 475asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
 476                                     struct compat_statfs64 __user *buf);
 477asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
 478                                   unsigned long arg);
 479asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
 480                                 unsigned long arg);
 481asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
 482asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
 483                                        unsigned long min_nr,
 484                                        unsigned long nr,
 485                                        struct io_event __user *events,
 486                                        struct compat_timespec __user *timeout);
 487asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
 488                                     u32 __user *iocb);
 489asmlinkage long compat_sys_mount(const char __user *dev_name,
 490                                 const char __user *dir_name,
 491                                 const char __user *type, unsigned long flags,
 492                                 const void __user *data);
 493asmlinkage long compat_sys_old_readdir(unsigned int fd,
 494                                       struct compat_old_linux_dirent __user *,
 495                                       unsigned int count);
 496asmlinkage long compat_sys_getdents(unsigned int fd,
 497                                    struct compat_linux_dirent __user *dirent,
 498                                    unsigned int count);
 499asmlinkage long compat_sys_getdents64(unsigned int fd,
 500                                      struct linux_dirent64 __user *dirent,
 501                                      unsigned int count);
 502asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
 503                                    unsigned int nr_segs, unsigned int flags);
 504asmlinkage long compat_sys_open(const char __user *filename, int flags,
 505                                umode_t mode);
 506asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
 507                                  int flags, umode_t mode);
 508asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
 509                                             struct file_handle __user *handle,
 510                                             int flags);
 511asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
 512                                    compat_ulong_t __user *outp,
 513                                    compat_ulong_t __user *exp,
 514                                    struct compat_timespec __user *tsp,
 515                                    void __user *sig);
 516asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 517                                 unsigned int nfds,
 518                                 struct compat_timespec __user *tsp,
 519                                 const compat_sigset_t __user *sigmask,
 520                                 compat_size_t sigsetsize);
 521asmlinkage long compat_sys_signalfd4(int ufd,
 522                                     const compat_sigset_t __user *sigmask,
 523                                     compat_size_t sigsetsize, int flags);
 524asmlinkage long compat_sys_get_mempolicy(int __user *policy,
 525                                         compat_ulong_t __user *nmask,
 526                                         compat_ulong_t maxnode,
 527                                         compat_ulong_t addr,
 528                                         compat_ulong_t flags);
 529asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
 530                                         compat_ulong_t maxnode);
 531asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
 532                                 compat_ulong_t mode,
 533                                 compat_ulong_t __user *nmask,
 534                                 compat_ulong_t maxnode, compat_ulong_t flags);
 535
 536asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 537                                      char __user *optval, unsigned int optlen);
 538asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
 539                                   unsigned flags);
 540asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 541                                    unsigned vlen, unsigned int flags);
 542asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
 543                                   unsigned int flags);
 544asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
 545                                unsigned flags);
 546asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
 547                            unsigned flags, struct sockaddr __user *addr,
 548                            int __user *addrlen);
 549asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 550                                    unsigned vlen, unsigned int flags,
 551                                    struct compat_timespec __user *timeout);
 552asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
 553                                     struct compat_timespec __user *rmtp);
 554asmlinkage long compat_sys_getitimer(int which,
 555                                     struct compat_itimerval __user *it);
 556asmlinkage long compat_sys_setitimer(int which,
 557                                     struct compat_itimerval __user *in,
 558                                     struct compat_itimerval __user *out);
 559asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
 560asmlinkage long compat_sys_setrlimit(unsigned int resource,
 561                                     struct compat_rlimit __user *rlim);
 562asmlinkage long compat_sys_getrlimit(unsigned int resource,
 563                                     struct compat_rlimit __user *rlim);
 564asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
 565asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
 566                                     unsigned int len,
 567                                     compat_ulong_t __user *user_mask_ptr);
 568asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
 569                                     unsigned int len,
 570                                     compat_ulong_t __user *user_mask_ptr);
 571asmlinkage long compat_sys_timer_create(clockid_t which_clock,
 572                        struct compat_sigevent __user *timer_event_spec,
 573                        timer_t __user *created_timer_id);
 574asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
 575                                         struct compat_itimerspec __user *new,
 576                                         struct compat_itimerspec __user *old);
 577asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
 578                                 struct compat_itimerspec __user *setting);
 579asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
 580                                         struct compat_timespec __user *tp);
 581asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
 582                                         struct compat_timespec __user *tp);
 583asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
 584                                         struct compat_timex __user *tp);
 585asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
 586                                        struct compat_timespec __user *tp);
 587asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
 588                                           struct compat_timespec __user *rqtp,
 589                                           struct compat_timespec __user *rmtp);
 590asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
 591                struct compat_siginfo __user *uinfo,
 592                struct compat_timespec __user *uts, compat_size_t sigsetsize);
 593asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
 594                                         compat_size_t sigsetsize);
 595asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
 596asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
 597                                 unsigned long arg);
 598asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
 599                struct compat_timespec __user *utime, u32 __user *uaddr2,
 600                u32 val3);
 601asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 602                                      char __user *optval, int __user *optlen);
 603asmlinkage long compat_sys_kexec_load(unsigned long entry,
 604                                      unsigned long nr_segments,
 605                                      struct compat_kexec_segment __user *,
 606                                      unsigned long flags);
 607asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
 608                        const struct compat_mq_attr __user *u_mqstat,
 609                        struct compat_mq_attr __user *u_omqstat);
 610asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
 611                        const struct compat_sigevent __user *u_notification);
 612asmlinkage long compat_sys_mq_open(const char __user *u_name,
 613                        int oflag, compat_mode_t mode,
 614                        struct compat_mq_attr __user *u_attr);
 615asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
 616                        const char __user *u_msg_ptr,
 617                        size_t msg_len, unsigned int msg_prio,
 618                        const struct compat_timespec __user *u_abs_timeout);
 619asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
 620                        char __user *u_msg_ptr,
 621                        size_t msg_len, unsigned int __user *u_msg_prio,
 622                        const struct compat_timespec __user *u_abs_timeout);
 623asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
 624asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
 625
 626extern ssize_t compat_rw_copy_check_uvector(int type,
 627                const struct compat_iovec __user *uvector,
 628                unsigned long nr_segs,
 629                unsigned long fast_segs, struct iovec *fast_pointer,
 630                struct iovec **ret_pointer);
 631
 632extern void __user *compat_alloc_user_space(unsigned long len);
 633
 634asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
 635                const struct compat_iovec __user *lvec,
 636                unsigned long liovcnt, const struct compat_iovec __user *rvec,
 637                unsigned long riovcnt, unsigned long flags);
 638asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
 639                const struct compat_iovec __user *lvec,
 640                unsigned long liovcnt, const struct compat_iovec __user *rvec,
 641                unsigned long riovcnt, unsigned long flags);
 642
 643asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
 644                                    compat_off_t __user *offset, compat_size_t count);
 645#ifdef CONFIG_GENERIC_SIGALTSTACK
 646asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
 647                                       compat_stack_t __user *uoss_ptr);
 648
 649int compat_restore_altstack(const compat_stack_t __user *uss);
 650int __compat_save_altstack(compat_stack_t __user *, unsigned long);
 651#endif
 652
 653asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
 654                                                 struct compat_timespec __user *interval);
 655
 656#else
 657
 658#define is_compat_task() (0)
 659
 660#endif /* CONFIG_COMPAT */
 661#endif /* _LINUX_COMPAT_H */
 662
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