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kernel/linux-imx6_3.14.28/include/linux/compat.h 24.7 KB
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  #ifndef _LINUX_COMPAT_H
  #define _LINUX_COMPAT_H
  /*
   * These are the type definitions for the architecture specific
   * syscall compatibility layer.
   */
  
  #ifdef CONFIG_COMPAT
  
  #include <linux/stat.h>
  #include <linux/param.h>	/* for HZ */
  #include <linux/sem.h>
  #include <linux/socket.h>
  #include <linux/if.h>
  #include <linux/fs.h>
  #include <linux/aio_abi.h>	/* for aio_context_t */
  
  #include <asm/compat.h>
  #include <asm/siginfo.h>
  #include <asm/signal.h>
  
  #ifndef COMPAT_USE_64BIT_TIME
  #define COMPAT_USE_64BIT_TIME 0
  #endif
  
  #ifndef __SC_DELOUSE
  #define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
  #endif
  
  #define COMPAT_SYSCALL_DEFINE1(name, ...) \
          COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
  #define COMPAT_SYSCALL_DEFINE2(name, ...) \
  	COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
  #define COMPAT_SYSCALL_DEFINE3(name, ...) \
  	COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
  #define COMPAT_SYSCALL_DEFINE4(name, ...) \
  	COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
  #define COMPAT_SYSCALL_DEFINE5(name, ...) \
  	COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
  #define COMPAT_SYSCALL_DEFINE6(name, ...) \
  	COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
  
  #define COMPAT_SYSCALL_DEFINEx(x, name, ...)				\
  	asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
  		__attribute__((alias(__stringify(compat_SyS##name))));  \
  	static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
  	asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
  	asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
  	{								\
  		return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));	\
  	}								\
  	static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
  
  #ifndef compat_user_stack_pointer
  #define compat_user_stack_pointer() current_user_stack_pointer()
  #endif
  #ifndef compat_sigaltstack	/* we'll need that for MIPS */
  typedef struct compat_sigaltstack {
  	compat_uptr_t			ss_sp;
  	int				ss_flags;
  	compat_size_t			ss_size;
  } compat_stack_t;
  #endif
  
  #define compat_jiffies_to_clock_t(x)	\
  		(((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
  
  typedef __compat_uid32_t	compat_uid_t;
  typedef __compat_gid32_t	compat_gid_t;
  
  struct compat_sel_arg_struct;
  struct rusage;
  
  struct compat_itimerspec {
  	struct compat_timespec it_interval;
  	struct compat_timespec it_value;
  };
  
  struct compat_utimbuf {
  	compat_time_t		actime;
  	compat_time_t		modtime;
  };
  
  struct compat_itimerval {
  	struct compat_timeval	it_interval;
  	struct compat_timeval	it_value;
  };
  
  struct compat_tms {
  	compat_clock_t		tms_utime;
  	compat_clock_t		tms_stime;
  	compat_clock_t		tms_cutime;
  	compat_clock_t		tms_cstime;
  };
  
  struct compat_timex {
  	compat_uint_t modes;
  	compat_long_t offset;
  	compat_long_t freq;
  	compat_long_t maxerror;
  	compat_long_t esterror;
  	compat_int_t status;
  	compat_long_t constant;
  	compat_long_t precision;
  	compat_long_t tolerance;
  	struct compat_timeval time;
  	compat_long_t tick;
  	compat_long_t ppsfreq;
  	compat_long_t jitter;
  	compat_int_t shift;
  	compat_long_t stabil;
  	compat_long_t jitcnt;
  	compat_long_t calcnt;
  	compat_long_t errcnt;
  	compat_long_t stbcnt;
  	compat_int_t tai;
  
  	compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
  	compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
  	compat_int_t:32; compat_int_t:32; compat_int_t:32;
  };
  
  #define _COMPAT_NSIG_WORDS	(_COMPAT_NSIG / _COMPAT_NSIG_BPW)
  
  typedef struct {
  	compat_sigset_word	sig[_COMPAT_NSIG_WORDS];
  } compat_sigset_t;
  
  struct compat_sigaction {
  #ifndef __ARCH_HAS_IRIX_SIGACTION
  	compat_uptr_t			sa_handler;
  	compat_ulong_t			sa_flags;
  #else
  	compat_uint_t			sa_flags;
  	compat_uptr_t			sa_handler;
  #endif
  #ifdef __ARCH_HAS_SA_RESTORER
  	compat_uptr_t			sa_restorer;
  #endif
  	compat_sigset_t			sa_mask __packed;
  };
  
  /*
   * These functions operate strictly on struct compat_time*
   */
  extern int get_compat_timespec(struct timespec *,
  			       const struct compat_timespec __user *);
  extern int put_compat_timespec(const struct timespec *,
  			       struct compat_timespec __user *);
  extern int get_compat_timeval(struct timeval *,
  			      const struct compat_timeval __user *);
  extern int put_compat_timeval(const struct timeval *,
  			      struct compat_timeval __user *);
  /*
   * These functions operate on 32- or 64-bit specs depending on
   * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
   * naming as compat_get/put_ rather than get/put_compat_.
   */
  extern int compat_get_timespec(struct timespec *, const void __user *);
  extern int compat_put_timespec(const struct timespec *, void __user *);
  extern int compat_get_timeval(struct timeval *, const void __user *);
  extern int compat_put_timeval(const struct timeval *, void __user *);
  
  struct compat_iovec {
  	compat_uptr_t	iov_base;
  	compat_size_t	iov_len;
  };
  
  struct compat_rlimit {
  	compat_ulong_t	rlim_cur;
  	compat_ulong_t	rlim_max;
  };
  
  struct compat_rusage {
  	struct compat_timeval ru_utime;
  	struct compat_timeval ru_stime;
  	compat_long_t	ru_maxrss;
  	compat_long_t	ru_ixrss;
  	compat_long_t	ru_idrss;
  	compat_long_t	ru_isrss;
  	compat_long_t	ru_minflt;
  	compat_long_t	ru_majflt;
  	compat_long_t	ru_nswap;
  	compat_long_t	ru_inblock;
  	compat_long_t	ru_oublock;
  	compat_long_t	ru_msgsnd;
  	compat_long_t	ru_msgrcv;
  	compat_long_t	ru_nsignals;
  	compat_long_t	ru_nvcsw;
  	compat_long_t	ru_nivcsw;
  };
  
  extern int put_compat_rusage(const struct rusage *,
  			     struct compat_rusage __user *);
  
  struct compat_siginfo;
  
  extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
  		struct compat_siginfo __user *, int,
  		struct compat_rusage __user *);
  
  struct compat_dirent {
  	u32		d_ino;
  	compat_off_t	d_off;
  	u16		d_reclen;
  	char		d_name[256];
  };
  
  struct compat_ustat {
  	compat_daddr_t		f_tfree;
  	compat_ino_t		f_tinode;
  	char			f_fname[6];
  	char			f_fpack[6];
  };
  
  #define COMPAT_SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int)) - 3)
  
  typedef struct compat_sigevent {
  	compat_sigval_t sigev_value;
  	compat_int_t sigev_signo;
  	compat_int_t sigev_notify;
  	union {
  		compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
  		compat_int_t _tid;
  
  		struct {
  			compat_uptr_t _function;
  			compat_uptr_t _attribute;
  		} _sigev_thread;
  	} _sigev_un;
  } compat_sigevent_t;
  
  struct compat_ifmap {
  	compat_ulong_t mem_start;
  	compat_ulong_t mem_end;
  	unsigned short base_addr;
  	unsigned char irq;
  	unsigned char dma;
  	unsigned char port;
  };
  
  struct compat_if_settings {
  	unsigned int type;	/* Type of physical device or protocol */
  	unsigned int size;	/* Size of the data allocated by the caller */
  	compat_uptr_t ifs_ifsu;	/* union of pointers */
  };
  
  struct compat_ifreq {
  	union {
  		char	ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
  	} ifr_ifrn;
  	union {
  		struct	sockaddr ifru_addr;
  		struct	sockaddr ifru_dstaddr;
  		struct	sockaddr ifru_broadaddr;
  		struct	sockaddr ifru_netmask;
  		struct	sockaddr ifru_hwaddr;
  		short	ifru_flags;
  		compat_int_t	ifru_ivalue;
  		compat_int_t	ifru_mtu;
  		struct	compat_ifmap ifru_map;
  		char	ifru_slave[IFNAMSIZ];   /* Just fits the size */
  		char	ifru_newname[IFNAMSIZ];
  		compat_caddr_t	ifru_data;
  		struct	compat_if_settings ifru_settings;
  	} ifr_ifru;
  };
  
  struct compat_ifconf {
  	compat_int_t	ifc_len;                /* size of buffer */
  	compat_caddr_t  ifcbuf;
  };
  
  struct compat_robust_list {
  	compat_uptr_t			next;
  };
  
  struct compat_robust_list_head {
  	struct compat_robust_list	list;
  	compat_long_t			futex_offset;
  	compat_uptr_t			list_op_pending;
  };
  
  #ifdef CONFIG_COMPAT_OLD_SIGACTION
  struct compat_old_sigaction {
  	compat_uptr_t			sa_handler;
  	compat_old_sigset_t		sa_mask;
  	compat_ulong_t			sa_flags;
  	compat_uptr_t			sa_restorer;
  };
  #endif
  
  struct compat_statfs;
  struct compat_statfs64;
  struct compat_old_linux_dirent;
  struct compat_linux_dirent;
  struct linux_dirent64;
  struct compat_msghdr;
  struct compat_mmsghdr;
  struct compat_sysinfo;
  struct compat_sysctl_args;
  struct compat_kexec_segment;
  struct compat_mq_attr;
  struct compat_msgbuf;
  
  extern void compat_exit_robust_list(struct task_struct *curr);
  
  asmlinkage long
  compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
  			   compat_size_t len);
  asmlinkage long
  compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
  			   compat_size_t __user *len_ptr);
  
  asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
  asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
  asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
  asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
  		compat_ssize_t msgsz, int msgflg);
  asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
  		compat_ssize_t msgsz, long msgtyp, int msgflg);
  long compat_sys_msgctl(int first, int second, void __user *uptr);
  long compat_sys_shmctl(int first, int second, void __user *uptr);
  long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
  		unsigned nsems, const struct compat_timespec __user *timeout);
  asmlinkage long compat_sys_keyctl(u32 option,
  			      u32 arg2, u32 arg3, u32 arg4, u32 arg5);
  asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
  
  asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
  		const struct compat_iovec __user *vec, compat_ulong_t vlen);
  asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
  		const struct compat_iovec __user *vec, compat_ulong_t vlen);
  asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
  		const struct compat_iovec __user *vec,
  		compat_ulong_t vlen, u32 pos_low, u32 pos_high);
  asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
  		const struct compat_iovec __user *vec,
  		compat_ulong_t vlen, u32 pos_low, u32 pos_high);
  asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
  
  asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
  		     const compat_uptr_t __user *envp);
  
  asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
  		compat_ulong_t __user *outp, compat_ulong_t __user *exp,
  		struct compat_timeval __user *tvp);
  
  asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
  
  asmlinkage long compat_sys_wait4(compat_pid_t pid,
  				 compat_uint_t __user *stat_addr, int options,
  				 struct compat_rusage __user *ru);
  
  #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
  
  #define BITS_TO_COMPAT_LONGS(bits) \
  	(((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
  
  long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
  		       unsigned long bitmap_size);
  long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
  		       unsigned long bitmap_size);
  int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
  int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
  int get_compat_sigevent(struct sigevent *event,
  		const struct compat_sigevent __user *u_event);
  long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
  				  struct compat_siginfo __user *uinfo);
  #ifdef CONFIG_COMPAT_OLD_SIGACTION
  asmlinkage long compat_sys_sigaction(int sig,
                                     const struct compat_old_sigaction __user *act,
                                     struct compat_old_sigaction __user *oact);
  #endif
  
  static inline int compat_timeval_compare(struct compat_timeval *lhs,
  					struct compat_timeval *rhs)
  {
  	if (lhs->tv_sec < rhs->tv_sec)
  		return -1;
  	if (lhs->tv_sec > rhs->tv_sec)
  		return 1;
  	return lhs->tv_usec - rhs->tv_usec;
  }
  
  static inline int compat_timespec_compare(struct compat_timespec *lhs,
  					struct compat_timespec *rhs)
  {
  	if (lhs->tv_sec < rhs->tv_sec)
  		return -1;
  	if (lhs->tv_sec > rhs->tv_sec)
  		return 1;
  	return lhs->tv_nsec - rhs->tv_nsec;
  }
  
  extern int get_compat_itimerspec(struct itimerspec *dst,
  				 const struct compat_itimerspec __user *src);
  extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
  				 const struct itimerspec *src);
  
  asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
  		struct timezone __user *tz);
  asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
  		struct timezone __user *tz);
  
  asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
  
  extern int compat_printk(const char *fmt, ...);
  extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat);
  extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set);
  
  asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
  		compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
  		const compat_ulong_t __user *new_nodes);
  
  extern int compat_ptrace_request(struct task_struct *child,
  				 compat_long_t request,
  				 compat_ulong_t addr, compat_ulong_t data);
  
  extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
  			       compat_ulong_t addr, compat_ulong_t data);
  asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
  				  compat_long_t addr, compat_long_t data);
  
  asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
  /*
   * epoll (fs/eventpoll.c) compat bits follow ...
   */
  struct epoll_event;	/* fortunately, this one is fixed-layout */
  asmlinkage long compat_sys_epoll_pwait(int epfd,
  			struct epoll_event __user *events,
  			int maxevents, int timeout,
  			const compat_sigset_t __user *sigmask,
  			compat_size_t sigsetsize);
  
  asmlinkage long compat_sys_utime(const char __user *filename,
  				 struct compat_utimbuf __user *t);
  asmlinkage long compat_sys_utimensat(unsigned int dfd,
  				     const char __user *filename,
  				     struct compat_timespec __user *t,
  				     int flags);
  
  asmlinkage long compat_sys_time(compat_time_t __user *tloc);
  asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
  asmlinkage long compat_sys_signalfd(int ufd,
  				    const compat_sigset_t __user *sigmask,
  				    compat_size_t sigsetsize);
  asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
  				   const struct compat_itimerspec __user *utmr,
  				   struct compat_itimerspec __user *otmr);
  asmlinkage long compat_sys_timerfd_gettime(int ufd,
  				   struct compat_itimerspec __user *otmr);
  
  asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
  				      __u32 __user *pages,
  				      const int __user *nodes,
  				      int __user *status,
  				      int flags);
  asmlinkage long compat_sys_futimesat(unsigned int dfd,
  				     const char __user *filename,
  				     struct compat_timeval __user *t);
  asmlinkage long compat_sys_utimes(const char __user *filename,
  				  struct compat_timeval __user *t);
  asmlinkage long compat_sys_newstat(const char __user *filename,
  				   struct compat_stat __user *statbuf);
  asmlinkage long compat_sys_newlstat(const char __user *filename,
  				    struct compat_stat __user *statbuf);
  asmlinkage long compat_sys_newfstatat(unsigned int dfd,
  				      const char __user *filename,
  				      struct compat_stat __user *statbuf,
  				      int flag);
  asmlinkage long compat_sys_newfstat(unsigned int fd,
  				    struct compat_stat __user *statbuf);
  asmlinkage long compat_sys_statfs(const char __user *pathname,
  				  struct compat_statfs __user *buf);
  asmlinkage long compat_sys_fstatfs(unsigned int fd,
  				   struct compat_statfs __user *buf);
  asmlinkage long compat_sys_statfs64(const char __user *pathname,
  				    compat_size_t sz,
  				    struct compat_statfs64 __user *buf);
  asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
  				     struct compat_statfs64 __user *buf);
  asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
  				   unsigned long arg);
  asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
  				 unsigned long arg);
  asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
  asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
  					unsigned long min_nr,
  					unsigned long nr,
  					struct io_event __user *events,
  					struct compat_timespec __user *timeout);
  asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
  				     u32 __user *iocb);
  asmlinkage long compat_sys_mount(const char __user *dev_name,
  				 const char __user *dir_name,
  				 const char __user *type, unsigned long flags,
  				 const void __user *data);
  asmlinkage long compat_sys_old_readdir(unsigned int fd,
  				       struct compat_old_linux_dirent __user *,
  				       unsigned int count);
  asmlinkage long compat_sys_getdents(unsigned int fd,
  				    struct compat_linux_dirent __user *dirent,
  				    unsigned int count);
  asmlinkage long compat_sys_getdents64(unsigned int fd,
  				      struct linux_dirent64 __user *dirent,
  				      unsigned int count);
  asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
  				    unsigned int nr_segs, unsigned int flags);
  asmlinkage long compat_sys_open(const char __user *filename, int flags,
  				umode_t mode);
  asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
  				  int flags, umode_t mode);
  asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
  					     struct file_handle __user *handle,
  					     int flags);
  asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
  asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
  asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
  				    compat_ulong_t __user *outp,
  				    compat_ulong_t __user *exp,
  				    struct compat_timespec __user *tsp,
  				    void __user *sig);
  asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
  				 unsigned int nfds,
  				 struct compat_timespec __user *tsp,
  				 const compat_sigset_t __user *sigmask,
  				 compat_size_t sigsetsize);
  asmlinkage long compat_sys_signalfd4(int ufd,
  				     const compat_sigset_t __user *sigmask,
  				     compat_size_t sigsetsize, int flags);
  asmlinkage long compat_sys_get_mempolicy(int __user *policy,
  					 compat_ulong_t __user *nmask,
  					 compat_ulong_t maxnode,
  					 compat_ulong_t addr,
  					 compat_ulong_t flags);
  asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
  					 compat_ulong_t maxnode);
  asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
  				 compat_ulong_t mode,
  				 compat_ulong_t __user *nmask,
  				 compat_ulong_t maxnode, compat_ulong_t flags);
  
  asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
  				      char __user *optval, unsigned int optlen);
  asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
  				   unsigned flags);
  asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
  				    unsigned vlen, unsigned int flags);
  asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
  				   unsigned int flags);
  asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
  				unsigned flags);
  asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
  			    unsigned flags, struct sockaddr __user *addr,
  			    int __user *addrlen);
  asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
  				    unsigned vlen, unsigned int flags,
  				    struct compat_timespec __user *timeout);
  asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
  				     struct compat_timespec __user *rmtp);
  asmlinkage long compat_sys_getitimer(int which,
  				     struct compat_itimerval __user *it);
  asmlinkage long compat_sys_setitimer(int which,
  				     struct compat_itimerval __user *in,
  				     struct compat_itimerval __user *out);
  asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
  asmlinkage long compat_sys_setrlimit(unsigned int resource,
  				     struct compat_rlimit __user *rlim);
  asmlinkage long compat_sys_getrlimit(unsigned int resource,
  				     struct compat_rlimit __user *rlim);
  asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
  asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
  				     unsigned int len,
  				     compat_ulong_t __user *user_mask_ptr);
  asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
  				     unsigned int len,
  				     compat_ulong_t __user *user_mask_ptr);
  asmlinkage long compat_sys_timer_create(clockid_t which_clock,
  			struct compat_sigevent __user *timer_event_spec,
  			timer_t __user *created_timer_id);
  asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
  					 struct compat_itimerspec __user *new,
  					 struct compat_itimerspec __user *old);
  asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
  				 struct compat_itimerspec __user *setting);
  asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
  					 struct compat_timespec __user *tp);
  asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
  					 struct compat_timespec __user *tp);
  asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
  					 struct compat_timex __user *tp);
  asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
  					struct compat_timespec __user *tp);
  asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
  					   struct compat_timespec __user *rqtp,
  					   struct compat_timespec __user *rmtp);
  asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
  		struct compat_siginfo __user *uinfo,
  		struct compat_timespec __user *uts, compat_size_t sigsetsize);
  asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
  					 compat_size_t sigsetsize);
  asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
  					  compat_sigset_t __user *oset,
  					  compat_size_t sigsetsize);
  asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
  					 compat_size_t sigsetsize);
  #ifndef CONFIG_ODD_RT_SIGACTION
  asmlinkage long compat_sys_rt_sigaction(int,
  				 const struct compat_sigaction __user *,
  				 struct compat_sigaction __user *,
  				 compat_size_t);
  #endif
  asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
  				struct compat_siginfo __user *uinfo);
  asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
  asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
  				 unsigned long arg);
  asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
  		struct compat_timespec __user *utime, u32 __user *uaddr2,
  		u32 val3);
  asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
  				      char __user *optval, int __user *optlen);
  asmlinkage long compat_sys_kexec_load(unsigned long entry,
  				      unsigned long nr_segments,
  				      struct compat_kexec_segment __user *,
  				      unsigned long flags);
  asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
  			const struct compat_mq_attr __user *u_mqstat,
  			struct compat_mq_attr __user *u_omqstat);
  asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
  			const struct compat_sigevent __user *u_notification);
  asmlinkage long compat_sys_mq_open(const char __user *u_name,
  			int oflag, compat_mode_t mode,
  			struct compat_mq_attr __user *u_attr);
  asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
  			const char __user *u_msg_ptr,
  			size_t msg_len, unsigned int msg_prio,
  			const struct compat_timespec __user *u_abs_timeout);
  asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
  			char __user *u_msg_ptr,
  			size_t msg_len, unsigned int __user *u_msg_prio,
  			const struct compat_timespec __user *u_abs_timeout);
  asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
  asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
  
  extern ssize_t compat_rw_copy_check_uvector(int type,
  		const struct compat_iovec __user *uvector,
  		unsigned long nr_segs,
  		unsigned long fast_segs, struct iovec *fast_pointer,
  		struct iovec **ret_pointer);
  
  extern void __user *compat_alloc_user_space(unsigned long len);
  
  asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
  		const struct compat_iovec __user *lvec,
  		unsigned long liovcnt, const struct compat_iovec __user *rvec,
  		unsigned long riovcnt, unsigned long flags);
  asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
  		const struct compat_iovec __user *lvec,
  		unsigned long liovcnt, const struct compat_iovec __user *rvec,
  		unsigned long riovcnt, unsigned long flags);
  
  asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
  				    compat_off_t __user *offset, compat_size_t count);
  asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
  				    compat_loff_t __user *offset, compat_size_t count);
  asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
  				       compat_stack_t __user *uoss_ptr);
  
  int compat_restore_altstack(const compat_stack_t __user *uss);
  int __compat_save_altstack(compat_stack_t __user *, unsigned long);
  #define compat_save_altstack_ex(uss, sp) do { \
  	compat_stack_t __user *__uss = uss; \
  	struct task_struct *t = current; \
  	put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
  	put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \
  	put_user_ex(t->sas_ss_size, &__uss->ss_size); \
  } while (0);
  
  asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
  						 struct compat_timespec __user *interval);
  
  asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
  					    int, const char __user *);
  #else
  
  #define is_compat_task() (0)
  
  #endif /* CONFIG_COMPAT */
  #endif /* _LINUX_COMPAT_H */