Initial import

1 files changed, 721 insertions, 0 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
new file mode 100644
index 000000000..ab2581469
--- /dev/null
+++ b/include/linux/compat.h
@@ -0,0 +1,721 @@
+#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 <linux/unistd.h>
+
+#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_DEFINE0(name) \
+	asmlinkage long compat_sys_##name(void)
+
+#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;
+
+typedef	compat_ulong_t		compat_aio_context_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 on 32- or 64-bit specs depending on
+ * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
+ */
+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 *);
+
+/*
+ * This function convert a timespec if necessary and returns a *user
+ * space* pointer.  If no conversion is necessary, it returns the
+ * initial pointer.  NULL is a legitimate argument and will always
+ * output NULL.
+ */
+extern int compat_convert_timespec(struct timespec __user **,
+				   const 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, compat_long_t 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);
+
+#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
+asmlinkage long compat_sys_preadv64(unsigned long fd,
+		const struct compat_iovec __user *vec,
+		unsigned long vlen, loff_t pos);
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
+asmlinkage long compat_sys_pwritev64(unsigned long fd,
+		const struct compat_iovec __user *vec,
+		unsigned long vlen, loff_t pos);
+#endif
+
+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_execveat(int dfd, const char __user *filename,
+		     const compat_uptr_t __user *argv,
+		     const compat_uptr_t __user *envp, int flags);
+
+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, compat_ulong_t nr_pages,
+				      __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,
+				   compat_ulong_t arg);
+asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
+				 compat_ulong_t arg);
+asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
+asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id,
+					compat_long_t min_nr,
+					compat_long_t nr,
+					struct io_event __user *events,
+					struct compat_timespec __user *timeout);
+asmlinkage long compat_sys_io_submit(compat_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, compat_ulong_t 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);
+#ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64
+asmlinkage long compat_sys_getdents64(unsigned int fd,
+				      struct linux_dirent64 __user *dirent,
+				      unsigned int count);
+#endif
+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, compat_size_t len,
+				unsigned flags);
+asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_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,
+				 compat_ulong_t 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(compat_ulong_t entry,
+				      compat_ulong_t nr_segments,
+				      struct compat_kexec_segment __user *,
+				      compat_ulong_t 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,
+			compat_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,
+			compat_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,
+		compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
+		compat_ulong_t riovcnt, compat_ulong_t flags);
+asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
+		const struct compat_iovec __user *lvec,
+		compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
+		compat_ulong_t riovcnt, compat_ulong_t 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);
+
+#ifdef __ARCH_WANT_SYS_SIGPENDING
+asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
+#endif
+
+#ifdef __ARCH_WANT_SYS_SIGPROCMASK
+asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
+				       compat_old_sigset_t __user *oset);
+#endif
+
+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 */