Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 1807 deletions

diff --git a/ANDROID_3.4.5/fs/compat.c b/ANDROID_3.4.5/fs/compat.c
deleted file mode 100644
index f2944ace..00000000
--- a/ANDROID_3.4.5/fs/compat.c
+++ /dev/null
@@ -1,1807 +0,0 @@
-/*
- *  linux/fs/compat.c
- *
- *  Kernel compatibililty routines for e.g. 32 bit syscall support
- *  on 64 bit kernels.
- *
- *  Copyright (C) 2002       Stephen Rothwell, IBM Corporation
- *  Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
- *  Copyright (C) 1998       Eddie C. Dost  (ecd@skynet.be)
- *  Copyright (C) 2001,2002  Andi Kleen, SuSE Labs 
- *  Copyright (C) 2003       Pavel Machek (pavel@ucw.cz)
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  published by the Free Software Foundation.
- */
-
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/linkage.h>
-#include <linux/compat.h>
-#include <linux/errno.h>
-#include <linux/time.h>
-#include <linux/fs.h>
-#include <linux/fcntl.h>
-#include <linux/namei.h>
-#include <linux/file.h>
-#include <linux/fdtable.h>
-#include <linux/vfs.h>
-#include <linux/ioctl.h>
-#include <linux/init.h>
-#include <linux/ncp_mount.h>
-#include <linux/nfs4_mount.h>
-#include <linux/syscalls.h>
-#include <linux/ctype.h>
-#include <linux/dirent.h>
-#include <linux/fsnotify.h>
-#include <linux/highuid.h>
-#include <linux/personality.h>
-#include <linux/rwsem.h>
-#include <linux/tsacct_kern.h>
-#include <linux/security.h>
-#include <linux/highmem.h>
-#include <linux/signal.h>
-#include <linux/poll.h>
-#include <linux/mm.h>
-#include <linux/eventpoll.h>
-#include <linux/fs_struct.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-
-#include <asm/uaccess.h>
-#include <asm/mmu_context.h>
-#include <asm/ioctls.h>
-#include "internal.h"
-
-int compat_log = 1;
-
-int compat_printk(const char *fmt, ...)
-{
-	va_list ap;
-	int ret;
-	if (!compat_log)
-		return 0;
-	va_start(ap, fmt);
-	ret = vprintk(fmt, ap);
-	va_end(ap);
-	return ret;
-}
-
-#include "read_write.h"
-
-/*
- * Not all architectures have sys_utime, so implement this in terms
- * of sys_utimes.
- */
-asmlinkage long compat_sys_utime(const char __user *filename,
-				 struct compat_utimbuf __user *t)
-{
-	struct timespec tv[2];
-
-	if (t) {
-		if (get_user(tv[0].tv_sec, &t->actime) ||
-		    get_user(tv[1].tv_sec, &t->modtime))
-			return -EFAULT;
-		tv[0].tv_nsec = 0;
-		tv[1].tv_nsec = 0;
-	}
-	return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
-}
-
-asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename, struct compat_timespec __user *t, int flags)
-{
-	struct timespec tv[2];
-
-	if  (t) {
-		if (get_compat_timespec(&tv[0], &t[0]) ||
-		    get_compat_timespec(&tv[1], &t[1]))
-			return -EFAULT;
-
-		if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
-			return 0;
-	}
-	return do_utimes(dfd, filename, t ? tv : NULL, flags);
-}
-
-asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename, struct compat_timeval __user *t)
-{
-	struct timespec tv[2];
-
-	if (t) {
-		if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
-		    get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
-		    get_user(tv[1].tv_sec, &t[1].tv_sec) ||
-		    get_user(tv[1].tv_nsec, &t[1].tv_usec))
-			return -EFAULT;
-		if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
-		    tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
-			return -EINVAL;
-		tv[0].tv_nsec *= 1000;
-		tv[1].tv_nsec *= 1000;
-	}
-	return do_utimes(dfd, filename, t ? tv : NULL, 0);
-}
-
-asmlinkage long compat_sys_utimes(const char __user *filename, struct compat_timeval __user *t)
-{
-	return compat_sys_futimesat(AT_FDCWD, filename, t);
-}
-
-static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
-{
-	struct compat_stat tmp;
-
-	if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
-		return -EOVERFLOW;
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.st_dev = old_encode_dev(stat->dev);
-	tmp.st_ino = stat->ino;
-	if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
-		return -EOVERFLOW;
-	tmp.st_mode = stat->mode;
-	tmp.st_nlink = stat->nlink;
-	if (tmp.st_nlink != stat->nlink)
-		return -EOVERFLOW;
-	SET_UID(tmp.st_uid, stat->uid);
-	SET_GID(tmp.st_gid, stat->gid);
-	tmp.st_rdev = old_encode_dev(stat->rdev);
-	if ((u64) stat->size > MAX_NON_LFS)
-		return -EOVERFLOW;
-	tmp.st_size = stat->size;
-	tmp.st_atime = stat->atime.tv_sec;
-	tmp.st_atime_nsec = stat->atime.tv_nsec;
-	tmp.st_mtime = stat->mtime.tv_sec;
-	tmp.st_mtime_nsec = stat->mtime.tv_nsec;
-	tmp.st_ctime = stat->ctime.tv_sec;
-	tmp.st_ctime_nsec = stat->ctime.tv_nsec;
-	tmp.st_blocks = stat->blocks;
-	tmp.st_blksize = stat->blksize;
-	return copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0;
-}
-
-asmlinkage long compat_sys_newstat(const char __user * filename,
-		struct compat_stat __user *statbuf)
-{
-	struct kstat stat;
-	int error;
-
-	error = vfs_stat(filename, &stat);
-	if (error)
-		return error;
-	return cp_compat_stat(&stat, statbuf);
-}
-
-asmlinkage long compat_sys_newlstat(const char __user * filename,
-		struct compat_stat __user *statbuf)
-{
-	struct kstat stat;
-	int error;
-
-	error = vfs_lstat(filename, &stat);
-	if (error)
-		return error;
-	return cp_compat_stat(&stat, statbuf);
-}
-
-#ifndef __ARCH_WANT_STAT64
-asmlinkage long compat_sys_newfstatat(unsigned int dfd,
-		const char __user *filename,
-		struct compat_stat __user *statbuf, int flag)
-{
-	struct kstat stat;
-	int error;
-
-	error = vfs_fstatat(dfd, filename, &stat, flag);
-	if (error)
-		return error;
-	return cp_compat_stat(&stat, statbuf);
-}
-#endif
-
-asmlinkage long compat_sys_newfstat(unsigned int fd,
-		struct compat_stat __user * statbuf)
-{
-	struct kstat stat;
-	int error = vfs_fstat(fd, &stat);
-
-	if (!error)
-		error = cp_compat_stat(&stat, statbuf);
-	return error;
-}
-
-static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *kbuf)
-{
-	
-	if (sizeof ubuf->f_blocks == 4) {
-		if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail |
-		     kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
-			return -EOVERFLOW;
-		/* f_files and f_ffree may be -1; it's okay
-		 * to stuff that into 32 bits */
-		if (kbuf->f_files != 0xffffffffffffffffULL
-		 && (kbuf->f_files & 0xffffffff00000000ULL))
-			return -EOVERFLOW;
-		if (kbuf->f_ffree != 0xffffffffffffffffULL
-		 && (kbuf->f_ffree & 0xffffffff00000000ULL))
-			return -EOVERFLOW;
-	}
-	if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
-	    __put_user(kbuf->f_type, &ubuf->f_type) ||
-	    __put_user(kbuf->f_bsize, &ubuf->f_bsize) ||
-	    __put_user(kbuf->f_blocks, &ubuf->f_blocks) ||
-	    __put_user(kbuf->f_bfree, &ubuf->f_bfree) ||
-	    __put_user(kbuf->f_bavail, &ubuf->f_bavail) ||
-	    __put_user(kbuf->f_files, &ubuf->f_files) ||
-	    __put_user(kbuf->f_ffree, &ubuf->f_ffree) ||
-	    __put_user(kbuf->f_namelen, &ubuf->f_namelen) ||
-	    __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
-	    __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) ||
-	    __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
-	    __put_user(kbuf->f_flags, &ubuf->f_flags) ||
-	    __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
-		return -EFAULT;
-	return 0;
-}
-
-/*
- * The following statfs calls are copies of code from fs/statfs.c and
- * should be checked against those from time to time
- */
-asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf)
-{
-	struct kstatfs tmp;
-	int error = user_statfs(pathname, &tmp);
-	if (!error)
-		error = put_compat_statfs(buf, &tmp);
-	return error;
-}
-
-asmlinkage long compat_sys_fstatfs(unsigned int fd, struct compat_statfs __user *buf)
-{
-	struct kstatfs tmp;
-	int error = fd_statfs(fd, &tmp);
-	if (!error)
-		error = put_compat_statfs(buf, &tmp);
-	return error;
-}
-
-static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf)
-{
-	if (sizeof ubuf->f_blocks == 4) {
-		if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail |
-		     kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
-			return -EOVERFLOW;
-		/* f_files and f_ffree may be -1; it's okay
-		 * to stuff that into 32 bits */
-		if (kbuf->f_files != 0xffffffffffffffffULL
-		 && (kbuf->f_files & 0xffffffff00000000ULL))
-			return -EOVERFLOW;
-		if (kbuf->f_ffree != 0xffffffffffffffffULL
-		 && (kbuf->f_ffree & 0xffffffff00000000ULL))
-			return -EOVERFLOW;
-	}
-	if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
-	    __put_user(kbuf->f_type, &ubuf->f_type) ||
-	    __put_user(kbuf->f_bsize, &ubuf->f_bsize) ||
-	    __put_user(kbuf->f_blocks, &ubuf->f_blocks) ||
-	    __put_user(kbuf->f_bfree, &ubuf->f_bfree) ||
-	    __put_user(kbuf->f_bavail, &ubuf->f_bavail) ||
-	    __put_user(kbuf->f_files, &ubuf->f_files) ||
-	    __put_user(kbuf->f_ffree, &ubuf->f_ffree) ||
-	    __put_user(kbuf->f_namelen, &ubuf->f_namelen) ||
-	    __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
-	    __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) ||
-	    __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
-	    __put_user(kbuf->f_flags, &ubuf->f_flags) ||
-	    __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
-		return -EFAULT;
-	return 0;
-}
-
-asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t sz, struct compat_statfs64 __user *buf)
-{
-	struct kstatfs tmp;
-	int error;
-
-	if (sz != sizeof(*buf))
-		return -EINVAL;
-
-	error = user_statfs(pathname, &tmp);
-	if (!error)
-		error = put_compat_statfs64(buf, &tmp);
-	return error;
-}
-
-asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct compat_statfs64 __user *buf)
-{
-	struct kstatfs tmp;
-	int error;
-
-	if (sz != sizeof(*buf))
-		return -EINVAL;
-
-	error = fd_statfs(fd, &tmp);
-	if (!error)
-		error = put_compat_statfs64(buf, &tmp);
-	return error;
-}
-
-/*
- * This is a copy of sys_ustat, just dealing with a structure layout.
- * Given how simple this syscall is that apporach is more maintainable
- * than the various conversion hacks.
- */
-asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u)
-{
-	struct compat_ustat tmp;
-	struct kstatfs sbuf;
-	int err = vfs_ustat(new_decode_dev(dev), &sbuf);
-	if (err)
-		return err;
-
-	memset(&tmp, 0, sizeof(struct compat_ustat));
-	tmp.f_tfree = sbuf.f_bfree;
-	tmp.f_tinode = sbuf.f_ffree;
-	if (copy_to_user(u, &tmp, sizeof(struct compat_ustat)))
-		return -EFAULT;
-	return 0;
-}
-
-static int get_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
-{
-	if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
-	    __get_user(kfl->l_type, &ufl->l_type) ||
-	    __get_user(kfl->l_whence, &ufl->l_whence) ||
-	    __get_user(kfl->l_start, &ufl->l_start) ||
-	    __get_user(kfl->l_len, &ufl->l_len) ||
-	    __get_user(kfl->l_pid, &ufl->l_pid))
-		return -EFAULT;
-	return 0;
-}
-
-static int put_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
-{
-	if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) ||
-	    __put_user(kfl->l_type, &ufl->l_type) ||
-	    __put_user(kfl->l_whence, &ufl->l_whence) ||
-	    __put_user(kfl->l_start, &ufl->l_start) ||
-	    __put_user(kfl->l_len, &ufl->l_len) ||
-	    __put_user(kfl->l_pid, &ufl->l_pid))
-		return -EFAULT;
-	return 0;
-}
-
-#ifndef HAVE_ARCH_GET_COMPAT_FLOCK64
-static int get_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl)
-{
-	if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
-	    __get_user(kfl->l_type, &ufl->l_type) ||
-	    __get_user(kfl->l_whence, &ufl->l_whence) ||
-	    __get_user(kfl->l_start, &ufl->l_start) ||
-	    __get_user(kfl->l_len, &ufl->l_len) ||
-	    __get_user(kfl->l_pid, &ufl->l_pid))
-		return -EFAULT;
-	return 0;
-}
-#endif
-
-#ifndef HAVE_ARCH_PUT_COMPAT_FLOCK64
-static int put_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl)
-{
-	if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) ||
-	    __put_user(kfl->l_type, &ufl->l_type) ||
-	    __put_user(kfl->l_whence, &ufl->l_whence) ||
-	    __put_user(kfl->l_start, &ufl->l_start) ||
-	    __put_user(kfl->l_len, &ufl->l_len) ||
-	    __put_user(kfl->l_pid, &ufl->l_pid))
-		return -EFAULT;
-	return 0;
-}
-#endif
-
-asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
-		unsigned long arg)
-{
-	mm_segment_t old_fs;
-	struct flock f;
-	long ret;
-
-	switch (cmd) {
-	case F_GETLK:
-	case F_SETLK:
-	case F_SETLKW:
-		ret = get_compat_flock(&f, compat_ptr(arg));
-		if (ret != 0)
-			break;
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-		ret = sys_fcntl(fd, cmd, (unsigned long)&f);
-		set_fs(old_fs);
-		if (cmd == F_GETLK && ret == 0) {
-			/* GETLK was successful and we need to return the data...
-			 * but it needs to fit in the compat structure.
-			 * l_start shouldn't be too big, unless the original
-			 * start + end is greater than COMPAT_OFF_T_MAX, in which
-			 * case the app was asking for trouble, so we return
-			 * -EOVERFLOW in that case.
-			 * l_len could be too big, in which case we just truncate it,
-			 * and only allow the app to see that part of the conflicting
-			 * lock that might make sense to it anyway
-			 */
-
-			if (f.l_start > COMPAT_OFF_T_MAX)
-				ret = -EOVERFLOW;
-			if (f.l_len > COMPAT_OFF_T_MAX)
-				f.l_len = COMPAT_OFF_T_MAX;
-			if (ret == 0)
-				ret = put_compat_flock(&f, compat_ptr(arg));
-		}
-		break;
-
-	case F_GETLK64:
-	case F_SETLK64:
-	case F_SETLKW64:
-		ret = get_compat_flock64(&f, compat_ptr(arg));
-		if (ret != 0)
-			break;
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-		ret = sys_fcntl(fd, (cmd == F_GETLK64) ? F_GETLK :
-				((cmd == F_SETLK64) ? F_SETLK : F_SETLKW),
-				(unsigned long)&f);
-		set_fs(old_fs);
-		if (cmd == F_GETLK64 && ret == 0) {
-			/* need to return lock information - see above for commentary */
-			if (f.l_start > COMPAT_LOFF_T_MAX)
-				ret = -EOVERFLOW;
-			if (f.l_len > COMPAT_LOFF_T_MAX)
-				f.l_len = COMPAT_LOFF_T_MAX;
-			if (ret == 0)
-				ret = put_compat_flock64(&f, compat_ptr(arg));
-		}
-		break;
-
-	default:
-		ret = sys_fcntl(fd, cmd, arg);
-		break;
-	}
-	return ret;
-}
-
-asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
-		unsigned long arg)
-{
-	if ((cmd == F_GETLK64) || (cmd == F_SETLK64) || (cmd == F_SETLKW64))
-		return -EINVAL;
-	return compat_sys_fcntl64(fd, cmd, arg);
-}
-
-asmlinkage long
-compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p)
-{
-	long ret;
-	aio_context_t ctx64;
-
-	mm_segment_t oldfs = get_fs();
-	if (unlikely(get_user(ctx64, ctx32p)))
-		return -EFAULT;
-
-	set_fs(KERNEL_DS);
-	/* The __user pointer cast is valid because of the set_fs() */
-	ret = sys_io_setup(nr_reqs, (aio_context_t __user *) &ctx64);
-	set_fs(oldfs);
-	/* truncating is ok because it's a user address */
-	if (!ret)
-		ret = put_user((u32) ctx64, ctx32p);
-	return ret;
-}
-
-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)
-{
-	long ret;
-	struct timespec t;
-	struct timespec __user *ut = NULL;
-
-	ret = -EFAULT;
-	if (unlikely(!access_ok(VERIFY_WRITE, events, 
-				nr * sizeof(struct io_event))))
-		goto out;
-	if (timeout) {
-		if (get_compat_timespec(&t, timeout))
-			goto out;
-
-		ut = compat_alloc_user_space(sizeof(*ut));
-		if (copy_to_user(ut, &t, sizeof(t)) )
-			goto out;
-	} 
-	ret = sys_io_getevents(ctx_id, min_nr, nr, events, ut);
-out:
-	return ret;
-}
-
-/* A write operation does a read from user space and vice versa */
-#define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ)
-
-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, int check_access)
-{
-	compat_ssize_t tot_len;
-	struct iovec *iov = *ret_pointer = fast_pointer;
-	ssize_t ret = 0;
-	int seg;
-
-	/*
-	 * SuS says "The readv() function *may* fail if the iovcnt argument
-	 * was less than or equal to 0, or greater than {IOV_MAX}.  Linux has
-	 * traditionally returned zero for zero segments, so...
-	 */
-	if (nr_segs == 0)
-		goto out;
-
-	ret = -EINVAL;
-	if (nr_segs > UIO_MAXIOV || nr_segs < 0)
-		goto out;
-	if (nr_segs > fast_segs) {
-		ret = -ENOMEM;
-		iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
-		if (iov == NULL)
-			goto out;
-	}
-	*ret_pointer = iov;
-
-	/*
-	 * Single unix specification:
-	 * We should -EINVAL if an element length is not >= 0 and fitting an
-	 * ssize_t.
-	 *
-	 * In Linux, the total length is limited to MAX_RW_COUNT, there is
-	 * no overflow possibility.
-	 */
-	tot_len = 0;
-	ret = -EINVAL;
-	for (seg = 0; seg < nr_segs; seg++) {
-		compat_uptr_t buf;
-		compat_ssize_t len;
-
-		if (__get_user(len, &uvector->iov_len) ||
-		   __get_user(buf, &uvector->iov_base)) {
-			ret = -EFAULT;
-			goto out;
-		}
-		if (len < 0)	/* size_t not fitting in compat_ssize_t .. */
-			goto out;
-		if (check_access &&
-		    !access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
-			ret = -EFAULT;
-			goto out;
-		}
-		if (len > MAX_RW_COUNT - tot_len)
-			len = MAX_RW_COUNT - tot_len;
-		tot_len += len;
-		iov->iov_base = compat_ptr(buf);
-		iov->iov_len = (compat_size_t) len;
-		uvector++;
-		iov++;
-	}
-	ret = tot_len;
-
-out:
-	return ret;
-}
-
-static inline long
-copy_iocb(long nr, u32 __user *ptr32, struct iocb __user * __user *ptr64)
-{
-	compat_uptr_t uptr;
-	int i;
-
-	for (i = 0; i < nr; ++i) {
-		if (get_user(uptr, ptr32 + i))
-			return -EFAULT;
-		if (put_user(compat_ptr(uptr), ptr64 + i))
-			return -EFAULT;
-	}
-	return 0;
-}
-
-#define MAX_AIO_SUBMITS 	(PAGE_SIZE/sizeof(struct iocb *))
-
-asmlinkage long
-compat_sys_io_submit(aio_context_t ctx_id, int nr, u32 __user *iocb)
-{
-	struct iocb __user * __user *iocb64; 
-	long ret;
-
-	if (unlikely(nr < 0))
-		return -EINVAL;
-
-	if (nr > MAX_AIO_SUBMITS)
-		nr = MAX_AIO_SUBMITS;
-	
-	iocb64 = compat_alloc_user_space(nr * sizeof(*iocb64));
-	ret = copy_iocb(nr, iocb, iocb64);
-	if (!ret)
-		ret = do_io_submit(ctx_id, nr, iocb64, 1);
-	return ret;
-}
-
-struct compat_ncp_mount_data {
-	compat_int_t version;
-	compat_uint_t ncp_fd;
-	__compat_uid_t mounted_uid;
-	compat_pid_t wdog_pid;
-	unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
-	compat_uint_t time_out;
-	compat_uint_t retry_count;
-	compat_uint_t flags;
-	__compat_uid_t uid;
-	__compat_gid_t gid;
-	compat_mode_t file_mode;
-	compat_mode_t dir_mode;
-};
-
-struct compat_ncp_mount_data_v4 {
-	compat_int_t version;
-	compat_ulong_t flags;
-	compat_ulong_t mounted_uid;
-	compat_long_t wdog_pid;
-	compat_uint_t ncp_fd;
-	compat_uint_t time_out;
-	compat_uint_t retry_count;
-	compat_ulong_t uid;
-	compat_ulong_t gid;
-	compat_ulong_t file_mode;
-	compat_ulong_t dir_mode;
-};
-
-static void *do_ncp_super_data_conv(void *raw_data)
-{
-	int version = *(unsigned int *)raw_data;
-
-	if (version == 3) {
-		struct compat_ncp_mount_data *c_n = raw_data;
-		struct ncp_mount_data *n = raw_data;
-
-		n->dir_mode = c_n->dir_mode;
-		n->file_mode = c_n->file_mode;
-		n->gid = c_n->gid;
-		n->uid = c_n->uid;
-		memmove (n->mounted_vol, c_n->mounted_vol, (sizeof (c_n->mounted_vol) + 3 * sizeof (unsigned int)));
-		n->wdog_pid = c_n->wdog_pid;
-		n->mounted_uid = c_n->mounted_uid;
-	} else if (version == 4) {
-		struct compat_ncp_mount_data_v4 *c_n = raw_data;
-		struct ncp_mount_data_v4 *n = raw_data;
-
-		n->dir_mode = c_n->dir_mode;
-		n->file_mode = c_n->file_mode;
-		n->gid = c_n->gid;
-		n->uid = c_n->uid;
-		n->retry_count = c_n->retry_count;
-		n->time_out = c_n->time_out;
-		n->ncp_fd = c_n->ncp_fd;
-		n->wdog_pid = c_n->wdog_pid;
-		n->mounted_uid = c_n->mounted_uid;
-		n->flags = c_n->flags;
-	} else if (version != 5) {
-		return NULL;
-	}
-
-	return raw_data;
-}
-
-
-struct compat_nfs_string {
-	compat_uint_t len;
-	compat_uptr_t data;
-};
-
-static inline void compat_nfs_string(struct nfs_string *dst,
-				     struct compat_nfs_string *src)
-{
-	dst->data = compat_ptr(src->data);
-	dst->len = src->len;
-}
-
-struct compat_nfs4_mount_data_v1 {
-	compat_int_t version;
-	compat_int_t flags;
-	compat_int_t rsize;
-	compat_int_t wsize;
-	compat_int_t timeo;
-	compat_int_t retrans;
-	compat_int_t acregmin;
-	compat_int_t acregmax;
-	compat_int_t acdirmin;
-	compat_int_t acdirmax;
-	struct compat_nfs_string client_addr;
-	struct compat_nfs_string mnt_path;
-	struct compat_nfs_string hostname;
-	compat_uint_t host_addrlen;
-	compat_uptr_t host_addr;
-	compat_int_t proto;
-	compat_int_t auth_flavourlen;
-	compat_uptr_t auth_flavours;
-};
-
-static int do_nfs4_super_data_conv(void *raw_data)
-{
-	int version = *(compat_uint_t *) raw_data;
-
-	if (version == 1) {
-		struct compat_nfs4_mount_data_v1 *raw = raw_data;
-		struct nfs4_mount_data *real = raw_data;
-
-		/* copy the fields backwards */
-		real->auth_flavours = compat_ptr(raw->auth_flavours);
-		real->auth_flavourlen = raw->auth_flavourlen;
-		real->proto = raw->proto;
-		real->host_addr = compat_ptr(raw->host_addr);
-		real->host_addrlen = raw->host_addrlen;
-		compat_nfs_string(&real->hostname, &raw->hostname);
-		compat_nfs_string(&real->mnt_path, &raw->mnt_path);
-		compat_nfs_string(&real->client_addr, &raw->client_addr);
-		real->acdirmax = raw->acdirmax;
-		real->acdirmin = raw->acdirmin;
-		real->acregmax = raw->acregmax;
-		real->acregmin = raw->acregmin;
-		real->retrans = raw->retrans;
-		real->timeo = raw->timeo;
-		real->wsize = raw->wsize;
-		real->rsize = raw->rsize;
-		real->flags = raw->flags;
-		real->version = raw->version;
-	}
-
-	return 0;
-}
-
-#define NCPFS_NAME      "ncpfs"
-#define NFS4_NAME	"nfs4"
-
-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)
-{
-	char *kernel_type;
-	unsigned long data_page;
-	char *kernel_dev;
-	char *dir_page;
-	int retval;
-
-	retval = copy_mount_string(type, &kernel_type);
-	if (retval < 0)
-		goto out;
-
-	dir_page = getname(dir_name);
-	retval = PTR_ERR(dir_page);
-	if (IS_ERR(dir_page))
-		goto out1;
-
-	retval = copy_mount_string(dev_name, &kernel_dev);
-	if (retval < 0)
-		goto out2;
-
-	retval = copy_mount_options(data, &data_page);
-	if (retval < 0)
-		goto out3;
-
-	retval = -EINVAL;
-
-	if (kernel_type && data_page) {
-		if (!strcmp(kernel_type, NCPFS_NAME)) {
-			do_ncp_super_data_conv((void *)data_page);
-		} else if (!strcmp(kernel_type, NFS4_NAME)) {
-			if (do_nfs4_super_data_conv((void *) data_page))
-				goto out4;
-		}
-	}
-
-	retval = do_mount(kernel_dev, dir_page, kernel_type,
-			flags, (void*)data_page);
-
- out4:
-	free_page(data_page);
- out3:
-	kfree(kernel_dev);
- out2:
-	putname(dir_page);
- out1:
-	kfree(kernel_type);
- out:
-	return retval;
-}
-
-struct compat_old_linux_dirent {
-	compat_ulong_t	d_ino;
-	compat_ulong_t	d_offset;
-	unsigned short	d_namlen;
-	char		d_name[1];
-};
-
-struct compat_readdir_callback {
-	struct compat_old_linux_dirent __user *dirent;
-	int result;
-};
-
-static int compat_fillonedir(void *__buf, const char *name, int namlen,
-			loff_t offset, u64 ino, unsigned int d_type)
-{
-	struct compat_readdir_callback *buf = __buf;
-	struct compat_old_linux_dirent __user *dirent;
-	compat_ulong_t d_ino;
-
-	if (buf->result)
-		return -EINVAL;
-	d_ino = ino;
-	if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
-		buf->result = -EOVERFLOW;
-		return -EOVERFLOW;
-	}
-	buf->result++;
-	dirent = buf->dirent;
-	if (!access_ok(VERIFY_WRITE, dirent,
-			(unsigned long)(dirent->d_name + namlen + 1) -
-				(unsigned long)dirent))
-		goto efault;
-	if (	__put_user(d_ino, &dirent->d_ino) ||
-		__put_user(offset, &dirent->d_offset) ||
-		__put_user(namlen, &dirent->d_namlen) ||
-		__copy_to_user(dirent->d_name, name, namlen) ||
-		__put_user(0, dirent->d_name + namlen))
-		goto efault;
-	return 0;
-efault:
-	buf->result = -EFAULT;
-	return -EFAULT;
-}
-
-asmlinkage long compat_sys_old_readdir(unsigned int fd,
-	struct compat_old_linux_dirent __user *dirent, unsigned int count)
-{
-	int error;
-	struct file *file;
-	struct compat_readdir_callback buf;
-
-	error = -EBADF;
-	file = fget(fd);
-	if (!file)
-		goto out;
-
-	buf.result = 0;
-	buf.dirent = dirent;
-
-	error = vfs_readdir(file, compat_fillonedir, &buf);
-	if (buf.result)
-		error = buf.result;
-
-	fput(file);
-out:
-	return error;
-}
-
-struct compat_linux_dirent {
-	compat_ulong_t	d_ino;
-	compat_ulong_t	d_off;
-	unsigned short	d_reclen;
-	char		d_name[1];
-};
-
-struct compat_getdents_callback {
-	struct compat_linux_dirent __user *current_dir;
-	struct compat_linux_dirent __user *previous;
-	int count;
-	int error;
-};
-
-static int compat_filldir(void *__buf, const char *name, int namlen,
-		loff_t offset, u64 ino, unsigned int d_type)
-{
-	struct compat_linux_dirent __user * dirent;
-	struct compat_getdents_callback *buf = __buf;
-	compat_ulong_t d_ino;
-	int reclen = ALIGN(offsetof(struct compat_linux_dirent, d_name) +
-		namlen + 2, sizeof(compat_long_t));
-
-	buf->error = -EINVAL;	/* only used if we fail.. */
-	if (reclen > buf->count)
-		return -EINVAL;
-	d_ino = ino;
-	if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
-		buf->error = -EOVERFLOW;
-		return -EOVERFLOW;
-	}
-	dirent = buf->previous;
-	if (dirent) {
-		if (__put_user(offset, &dirent->d_off))
-			goto efault;
-	}
-	dirent = buf->current_dir;
-	if (__put_user(d_ino, &dirent->d_ino))
-		goto efault;
-	if (__put_user(reclen, &dirent->d_reclen))
-		goto efault;
-	if (copy_to_user(dirent->d_name, name, namlen))
-		goto efault;
-	if (__put_user(0, dirent->d_name + namlen))
-		goto efault;
-	if (__put_user(d_type, (char  __user *) dirent + reclen - 1))
-		goto efault;
-	buf->previous = dirent;
-	dirent = (void __user *)dirent + reclen;
-	buf->current_dir = dirent;
-	buf->count -= reclen;
-	return 0;
-efault:
-	buf->error = -EFAULT;
-	return -EFAULT;
-}
-
-asmlinkage long compat_sys_getdents(unsigned int fd,
-		struct compat_linux_dirent __user *dirent, unsigned int count)
-{
-	struct file * file;
-	struct compat_linux_dirent __user * lastdirent;
-	struct compat_getdents_callback buf;
-	int error;
-
-	error = -EFAULT;
-	if (!access_ok(VERIFY_WRITE, dirent, count))
-		goto out;
-
-	error = -EBADF;
-	file = fget(fd);
-	if (!file)
-		goto out;
-
-	buf.current_dir = dirent;
-	buf.previous = NULL;
-	buf.count = count;
-	buf.error = 0;
-
-	error = vfs_readdir(file, compat_filldir, &buf);
-	if (error >= 0)
-		error = buf.error;
-	lastdirent = buf.previous;
-	if (lastdirent) {
-		if (put_user(file->f_pos, &lastdirent->d_off))
-			error = -EFAULT;
-		else
-			error = count - buf.count;
-	}
-	fput(file);
-out:
-	return error;
-}
-
-#ifndef __ARCH_OMIT_COMPAT_SYS_GETDENTS64
-
-struct compat_getdents_callback64 {
-	struct linux_dirent64 __user *current_dir;
-	struct linux_dirent64 __user *previous;
-	int count;
-	int error;
-};
-
-static int compat_filldir64(void * __buf, const char * name, int namlen, loff_t offset,
-		     u64 ino, unsigned int d_type)
-{
-	struct linux_dirent64 __user *dirent;
-	struct compat_getdents_callback64 *buf = __buf;
-	int reclen = ALIGN(offsetof(struct linux_dirent64, d_name) + namlen + 1,
-		sizeof(u64));
-	u64 off;
-
-	buf->error = -EINVAL;	/* only used if we fail.. */
-	if (reclen > buf->count)
-		return -EINVAL;
-	dirent = buf->previous;
-
-	if (dirent) {
-		if (__put_user_unaligned(offset, &dirent->d_off))
-			goto efault;
-	}
-	dirent = buf->current_dir;
-	if (__put_user_unaligned(ino, &dirent->d_ino))
-		goto efault;
-	off = 0;
-	if (__put_user_unaligned(off, &dirent->d_off))
-		goto efault;
-	if (__put_user(reclen, &dirent->d_reclen))
-		goto efault;
-	if (__put_user(d_type, &dirent->d_type))
-		goto efault;
-	if (copy_to_user(dirent->d_name, name, namlen))
-		goto efault;
-	if (__put_user(0, dirent->d_name + namlen))
-		goto efault;
-	buf->previous = dirent;
-	dirent = (void __user *)dirent + reclen;
-	buf->current_dir = dirent;
-	buf->count -= reclen;
-	return 0;
-efault:
-	buf->error = -EFAULT;
-	return -EFAULT;
-}
-
-asmlinkage long compat_sys_getdents64(unsigned int fd,
-		struct linux_dirent64 __user * dirent, unsigned int count)
-{
-	struct file * file;
-	struct linux_dirent64 __user * lastdirent;
-	struct compat_getdents_callback64 buf;
-	int error;
-
-	error = -EFAULT;
-	if (!access_ok(VERIFY_WRITE, dirent, count))
-		goto out;
-
-	error = -EBADF;
-	file = fget(fd);
-	if (!file)
-		goto out;
-
-	buf.current_dir = dirent;
-	buf.previous = NULL;
-	buf.count = count;
-	buf.error = 0;
-
-	error = vfs_readdir(file, compat_filldir64, &buf);
-	if (error >= 0)
-		error = buf.error;
-	lastdirent = buf.previous;
-	if (lastdirent) {
-		typeof(lastdirent->d_off) d_off = file->f_pos;
-		if (__put_user_unaligned(d_off, &lastdirent->d_off))
-			error = -EFAULT;
-		else
-			error = count - buf.count;
-	}
-	fput(file);
-out:
-	return error;
-}
-#endif /* ! __ARCH_OMIT_COMPAT_SYS_GETDENTS64 */
-
-static ssize_t compat_do_readv_writev(int type, struct file *file,
-			       const struct compat_iovec __user *uvector,
-			       unsigned long nr_segs, loff_t *pos)
-{
-	compat_ssize_t tot_len;
-	struct iovec iovstack[UIO_FASTIOV];
-	struct iovec *iov = iovstack;
-	ssize_t ret;
-	io_fn_t fn;
-	iov_fn_t fnv;
-
-	ret = -EINVAL;
-	if (!file->f_op)
-		goto out;
-
-	ret = -EFAULT;
-	if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
-		goto out;
-
-	tot_len = compat_rw_copy_check_uvector(type, uvector, nr_segs,
-					       UIO_FASTIOV, iovstack, &iov, 1);
-	if (tot_len == 0) {
-		ret = 0;
-		goto out;
-	}
-
-	ret = rw_verify_area(type, file, pos, tot_len);
-	if (ret < 0)
-		goto out;
-
-	fnv = NULL;
-	if (type == READ) {
-		fn = file->f_op->read;
-		fnv = file->f_op->aio_read;
-	} else {
-		fn = (io_fn_t)file->f_op->write;
-		fnv = file->f_op->aio_write;
-	}
-
-	if (fnv)
-		ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
-						pos, fnv);
-	else
-		ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
-
-out:
-	if (iov != iovstack)
-		kfree(iov);
-	if ((ret + (type == READ)) > 0) {
-		if (type == READ)
-			fsnotify_access(file);
-		else
-			fsnotify_modify(file);
-	}
-	return ret;
-}
-
-static size_t compat_readv(struct file *file,
-			   const struct compat_iovec __user *vec,
-			   unsigned long vlen, loff_t *pos)
-{
-	ssize_t ret = -EBADF;
-
-	if (!(file->f_mode & FMODE_READ))
-		goto out;
-
-	ret = -EINVAL;
-	if (!file->f_op || (!file->f_op->aio_read && !file->f_op->read))
-		goto out;
-
-	ret = compat_do_readv_writev(READ, file, vec, vlen, pos);
-
-out:
-	if (ret > 0)
-		add_rchar(current, ret);
-	inc_syscr(current);
-	return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec,
-		 unsigned long vlen)
-{
-	struct file *file;
-	int fput_needed;
-	ssize_t ret;
-
-	file = fget_light(fd, &fput_needed);
-	if (!file)
-		return -EBADF;
-	ret = compat_readv(file, vec, vlen, &file->f_pos);
-	fput_light(file, fput_needed);
-	return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_preadv64(unsigned long fd, const struct compat_iovec __user *vec,
-		    unsigned long vlen, loff_t pos)
-{
-	struct file *file;
-	int fput_needed;
-	ssize_t ret;
-
-	if (pos < 0)
-		return -EINVAL;
-	file = fget_light(fd, &fput_needed);
-	if (!file)
-		return -EBADF;
-	ret = -ESPIPE;
-	if (file->f_mode & FMODE_PREAD)
-		ret = compat_readv(file, vec, vlen, &pos);
-	fput_light(file, fput_needed);
-	return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_preadv(unsigned long fd, const struct compat_iovec __user *vec,
-		  unsigned long vlen, u32 pos_low, u32 pos_high)
-{
-	loff_t pos = ((loff_t)pos_high << 32) | pos_low;
-	return compat_sys_preadv64(fd, vec, vlen, pos);
-}
-
-static size_t compat_writev(struct file *file,
-			    const struct compat_iovec __user *vec,
-			    unsigned long vlen, loff_t *pos)
-{
-	ssize_t ret = -EBADF;
-
-	if (!(file->f_mode & FMODE_WRITE))
-		goto out;
-
-	ret = -EINVAL;
-	if (!file->f_op || (!file->f_op->aio_write && !file->f_op->write))
-		goto out;
-
-	ret = compat_do_readv_writev(WRITE, file, vec, vlen, pos);
-
-out:
-	if (ret > 0)
-		add_wchar(current, ret);
-	inc_syscw(current);
-	return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec,
-		  unsigned long vlen)
-{
-	struct file *file;
-	int fput_needed;
-	ssize_t ret;
-
-	file = fget_light(fd, &fput_needed);
-	if (!file)
-		return -EBADF;
-	ret = compat_writev(file, vec, vlen, &file->f_pos);
-	fput_light(file, fput_needed);
-	return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_pwritev64(unsigned long fd, const struct compat_iovec __user *vec,
-		     unsigned long vlen, loff_t pos)
-{
-	struct file *file;
-	int fput_needed;
-	ssize_t ret;
-
-	if (pos < 0)
-		return -EINVAL;
-	file = fget_light(fd, &fput_needed);
-	if (!file)
-		return -EBADF;
-	ret = -ESPIPE;
-	if (file->f_mode & FMODE_PWRITE)
-		ret = compat_writev(file, vec, vlen, &pos);
-	fput_light(file, fput_needed);
-	return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_pwritev(unsigned long fd, const struct compat_iovec __user *vec,
-		   unsigned long vlen, u32 pos_low, u32 pos_high)
-{
-	loff_t pos = ((loff_t)pos_high << 32) | pos_low;
-	return compat_sys_pwritev64(fd, vec, vlen, pos);
-}
-
-asmlinkage long
-compat_sys_vmsplice(int fd, const struct compat_iovec __user *iov32,
-		    unsigned int nr_segs, unsigned int flags)
-{
-	unsigned i;
-	struct iovec __user *iov;
-	if (nr_segs > UIO_MAXIOV)
-		return -EINVAL;
-	iov = compat_alloc_user_space(nr_segs * sizeof(struct iovec));
-	for (i = 0; i < nr_segs; i++) {
-		struct compat_iovec v;
-		if (get_user(v.iov_base, &iov32[i].iov_base) ||
-		    get_user(v.iov_len, &iov32[i].iov_len) ||
-		    put_user(compat_ptr(v.iov_base), &iov[i].iov_base) ||
-		    put_user(v.iov_len, &iov[i].iov_len))
-			return -EFAULT;
-	}
-	return sys_vmsplice(fd, iov, nr_segs, flags);
-}
-
-/*
- * Exactly like fs/open.c:sys_open(), except that it doesn't set the
- * O_LARGEFILE flag.
- */
-asmlinkage long
-compat_sys_open(const char __user *filename, int flags, umode_t mode)
-{
-	return do_sys_open(AT_FDCWD, filename, flags, mode);
-}
-
-/*
- * Exactly like fs/open.c:sys_openat(), except that it doesn't set the
- * O_LARGEFILE flag.
- */
-asmlinkage long
-compat_sys_openat(unsigned int dfd, const char __user *filename, int flags, umode_t mode)
-{
-	return do_sys_open(dfd, filename, flags, mode);
-}
-
-#define __COMPAT_NFDBITS       (8 * sizeof(compat_ulong_t))
-
-static int poll_select_copy_remaining(struct timespec *end_time, void __user *p,
-				      int timeval, int ret)
-{
-	struct timespec ts;
-
-	if (!p)
-		return ret;
-
-	if (current->personality & STICKY_TIMEOUTS)
-		goto sticky;
-
-	/* No update for zero timeout */
-	if (!end_time->tv_sec && !end_time->tv_nsec)
-		return ret;
-
-	ktime_get_ts(&ts);
-	ts = timespec_sub(*end_time, ts);
-	if (ts.tv_sec < 0)
-		ts.tv_sec = ts.tv_nsec = 0;
-
-	if (timeval) {
-		struct compat_timeval rtv;
-
-		rtv.tv_sec = ts.tv_sec;
-		rtv.tv_usec = ts.tv_nsec / NSEC_PER_USEC;
-
-		if (!copy_to_user(p, &rtv, sizeof(rtv)))
-			return ret;
-	} else {
-		struct compat_timespec rts;
-
-		rts.tv_sec = ts.tv_sec;
-		rts.tv_nsec = ts.tv_nsec;
-
-		if (!copy_to_user(p, &rts, sizeof(rts)))
-			return ret;
-	}
-	/*
-	 * If an application puts its timeval in read-only memory, we
-	 * don't want the Linux-specific update to the timeval to
-	 * cause a fault after the select has completed
-	 * successfully. However, because we're not updating the
-	 * timeval, we can't restart the system call.
-	 */
-
-sticky:
-	if (ret == -ERESTARTNOHAND)
-		ret = -EINTR;
-	return ret;
-}
-
-/*
- * Ooo, nasty.  We need here to frob 32-bit unsigned longs to
- * 64-bit unsigned longs.
- */
-static
-int compat_get_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
-			unsigned long *fdset)
-{
-	nr = DIV_ROUND_UP(nr, __COMPAT_NFDBITS);
-	if (ufdset) {
-		unsigned long odd;
-
-		if (!access_ok(VERIFY_WRITE, ufdset, nr*sizeof(compat_ulong_t)))
-			return -EFAULT;
-
-		odd = nr & 1UL;
-		nr &= ~1UL;
-		while (nr) {
-			unsigned long h, l;
-			if (__get_user(l, ufdset) || __get_user(h, ufdset+1))
-				return -EFAULT;
-			ufdset += 2;
-			*fdset++ = h << 32 | l;
-			nr -= 2;
-		}
-		if (odd && __get_user(*fdset, ufdset))
-			return -EFAULT;
-	} else {
-		/* Tricky, must clear full unsigned long in the
-		 * kernel fdset at the end, this makes sure that
-		 * actually happens.
-		 */
-		memset(fdset, 0, ((nr + 1) & ~1)*sizeof(compat_ulong_t));
-	}
-	return 0;
-}
-
-static
-int compat_set_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
-		      unsigned long *fdset)
-{
-	unsigned long odd;
-	nr = DIV_ROUND_UP(nr, __COMPAT_NFDBITS);
-
-	if (!ufdset)
-		return 0;
-
-	odd = nr & 1UL;
-	nr &= ~1UL;
-	while (nr) {
-		unsigned long h, l;
-		l = *fdset++;
-		h = l >> 32;
-		if (__put_user(l, ufdset) || __put_user(h, ufdset+1))
-			return -EFAULT;
-		ufdset += 2;
-		nr -= 2;
-	}
-	if (odd && __put_user(*fdset, ufdset))
-		return -EFAULT;
-	return 0;
-}
-
-
-/*
- * This is a virtual copy of sys_select from fs/select.c and probably
- * should be compared to it from time to time
- */
-
-/*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
-int compat_core_sys_select(int n, compat_ulong_t __user *inp,
-	compat_ulong_t __user *outp, compat_ulong_t __user *exp,
-	struct timespec *end_time)
-{
-	fd_set_bits fds;
-	void *bits;
-	int size, max_fds, ret = -EINVAL;
-	struct fdtable *fdt;
-	long stack_fds[SELECT_STACK_ALLOC/sizeof(long)];
-
-	if (n < 0)
-		goto out_nofds;
-
-	/* max_fds can increase, so grab it once to avoid race */
-	rcu_read_lock();
-	fdt = files_fdtable(current->files);
-	max_fds = fdt->max_fds;
-	rcu_read_unlock();
-	if (n > max_fds)
-		n = max_fds;
-
-	/*
-	 * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
-	 * since we used fdset we need to allocate memory in units of
-	 * long-words.
-	 */
-	size = FDS_BYTES(n);
-	bits = stack_fds;
-	if (size > sizeof(stack_fds) / 6) {
-		bits = kmalloc(6 * size, GFP_KERNEL);
-		ret = -ENOMEM;
-		if (!bits)
-			goto out_nofds;
-	}
-	fds.in      = (unsigned long *)  bits;
-	fds.out     = (unsigned long *) (bits +   size);
-	fds.ex      = (unsigned long *) (bits + 2*size);
-	fds.res_in  = (unsigned long *) (bits + 3*size);
-	fds.res_out = (unsigned long *) (bits + 4*size);
-	fds.res_ex  = (unsigned long *) (bits + 5*size);
-
-	if ((ret = compat_get_fd_set(n, inp, fds.in)) ||
-	    (ret = compat_get_fd_set(n, outp, fds.out)) ||
-	    (ret = compat_get_fd_set(n, exp, fds.ex)))
-		goto out;
-	zero_fd_set(n, fds.res_in);
-	zero_fd_set(n, fds.res_out);
-	zero_fd_set(n, fds.res_ex);
-
-	ret = do_select(n, &fds, end_time);
-
-	if (ret < 0)
-		goto out;
-	if (!ret) {
-		ret = -ERESTARTNOHAND;
-		if (signal_pending(current))
-			goto out;
-		ret = 0;
-	}
-
-	if (compat_set_fd_set(n, inp, fds.res_in) ||
-	    compat_set_fd_set(n, outp, fds.res_out) ||
-	    compat_set_fd_set(n, exp, fds.res_ex))
-		ret = -EFAULT;
-out:
-	if (bits != stack_fds)
-		kfree(bits);
-out_nofds:
-	return ret;
-}
-
-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)
-{
-	struct timespec end_time, *to = NULL;
-	struct compat_timeval tv;
-	int ret;
-
-	if (tvp) {
-		if (copy_from_user(&tv, tvp, sizeof(tv)))
-			return -EFAULT;
-
-		to = &end_time;
-		if (poll_select_set_timeout(to,
-				tv.tv_sec + (tv.tv_usec / USEC_PER_SEC),
-				(tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC))
-			return -EINVAL;
-	}
-
-	ret = compat_core_sys_select(n, inp, outp, exp, to);
-	ret = poll_select_copy_remaining(&end_time, tvp, 1, ret);
-
-	return ret;
-}
-
-struct compat_sel_arg_struct {
-	compat_ulong_t n;
-	compat_uptr_t inp;
-	compat_uptr_t outp;
-	compat_uptr_t exp;
-	compat_uptr_t tvp;
-};
-
-asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg)
-{
-	struct compat_sel_arg_struct a;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		return -EFAULT;
-	return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
-				 compat_ptr(a.exp), compat_ptr(a.tvp));
-}
-
-#ifdef HAVE_SET_RESTORE_SIGMASK
-static long do_compat_pselect(int n, compat_ulong_t __user *inp,
-	compat_ulong_t __user *outp, compat_ulong_t __user *exp,
-	struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask,
-	compat_size_t sigsetsize)
-{
-	compat_sigset_t ss32;
-	sigset_t ksigmask, sigsaved;
-	struct compat_timespec ts;
-	struct timespec end_time, *to = NULL;
-	int ret;
-
-	if (tsp) {
-		if (copy_from_user(&ts, tsp, sizeof(ts)))
-			return -EFAULT;
-
-		to = &end_time;
-		if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
-			return -EINVAL;
-	}
-
-	if (sigmask) {
-		if (sigsetsize != sizeof(compat_sigset_t))
-			return -EINVAL;
-		if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
-			return -EFAULT;
-		sigset_from_compat(&ksigmask, &ss32);
-
-		sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
-		sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
-	}
-
-	ret = compat_core_sys_select(n, inp, outp, exp, to);
-	ret = poll_select_copy_remaining(&end_time, tsp, 0, ret);
-
-	if (ret == -ERESTARTNOHAND) {
-		/*
-		 * Don't restore the signal mask yet. Let do_signal() deliver
-		 * the signal on the way back to userspace, before the signal
-		 * mask is restored.
-		 */
-		if (sigmask) {
-			memcpy(&current->saved_sigmask, &sigsaved,
-					sizeof(sigsaved));
-			set_restore_sigmask();
-		}
-	} else if (sigmask)
-		sigprocmask(SIG_SETMASK, &sigsaved, NULL);
-
-	return ret;
-}
-
-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)
-{
-	compat_size_t sigsetsize = 0;
-	compat_uptr_t up = 0;
-
-	if (sig) {
-		if (!access_ok(VERIFY_READ, sig,
-				sizeof(compat_uptr_t)+sizeof(compat_size_t)) ||
-		    	__get_user(up, (compat_uptr_t __user *)sig) ||
-		    	__get_user(sigsetsize,
-				(compat_size_t __user *)(sig+sizeof(up))))
-			return -EFAULT;
-	}
-	return do_compat_pselect(n, inp, outp, exp, tsp, compat_ptr(up),
-				 sigsetsize);
-}
-
-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)
-{
-	compat_sigset_t ss32;
-	sigset_t ksigmask, sigsaved;
-	struct compat_timespec ts;
-	struct timespec end_time, *to = NULL;
-	int ret;
-
-	if (tsp) {
-		if (copy_from_user(&ts, tsp, sizeof(ts)))
-			return -EFAULT;
-
-		to = &end_time;
-		if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
-			return -EINVAL;
-	}
-
-	if (sigmask) {
-		if (sigsetsize != sizeof(compat_sigset_t))
-			return -EINVAL;
-		if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
-			return -EFAULT;
-		sigset_from_compat(&ksigmask, &ss32);
-
-		sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
-		sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
-	}
-
-	ret = do_sys_poll(ufds, nfds, to);
-
-	/* We can restart this syscall, usually */
-	if (ret == -EINTR) {
-		/*
-		 * Don't restore the signal mask yet. Let do_signal() deliver
-		 * the signal on the way back to userspace, before the signal
-		 * mask is restored.
-		 */
-		if (sigmask) {
-			memcpy(&current->saved_sigmask, &sigsaved,
-				sizeof(sigsaved));
-			set_restore_sigmask();
-		}
-		ret = -ERESTARTNOHAND;
-	} else if (sigmask)
-		sigprocmask(SIG_SETMASK, &sigsaved, NULL);
-
-	ret = poll_select_copy_remaining(&end_time, tsp, 0, ret);
-
-	return ret;
-}
-#endif /* HAVE_SET_RESTORE_SIGMASK */
-
-#ifdef CONFIG_EPOLL
-
-#ifdef HAVE_SET_RESTORE_SIGMASK
-asmlinkage long compat_sys_epoll_pwait(int epfd,
-			struct compat_epoll_event __user *events,
-			int maxevents, int timeout,
-			const compat_sigset_t __user *sigmask,
-			compat_size_t sigsetsize)
-{
-	long err;
-	compat_sigset_t csigmask;
-	sigset_t ksigmask, sigsaved;
-
-	/*
-	 * If the caller wants a certain signal mask to be set during the wait,
-	 * we apply it here.
-	 */
-	if (sigmask) {
-		if (sigsetsize != sizeof(compat_sigset_t))
-			return -EINVAL;
-		if (copy_from_user(&csigmask, sigmask, sizeof(csigmask)))
-			return -EFAULT;
-		sigset_from_compat(&ksigmask, &csigmask);
-		sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
-		sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
-	}
-
-	err = sys_epoll_wait(epfd, events, maxevents, timeout);
-
-	/*
-	 * If we changed the signal mask, we need to restore the original one.
-	 * In case we've got a signal while waiting, we do not restore the
-	 * signal mask yet, and we allow do_signal() to deliver the signal on
-	 * the way back to userspace, before the signal mask is restored.
-	 */
-	if (sigmask) {
-		if (err == -EINTR) {
-			memcpy(&current->saved_sigmask, &sigsaved,
-			       sizeof(sigsaved));
-			set_restore_sigmask();
-		} else
-			sigprocmask(SIG_SETMASK, &sigsaved, NULL);
-	}
-
-	return err;
-}
-#endif /* HAVE_SET_RESTORE_SIGMASK */
-
-#endif /* CONFIG_EPOLL */
-
-#ifdef CONFIG_SIGNALFD
-
-asmlinkage long compat_sys_signalfd4(int ufd,
-				     const compat_sigset_t __user *sigmask,
-				     compat_size_t sigsetsize, int flags)
-{
-	compat_sigset_t ss32;
-	sigset_t tmp;
-	sigset_t __user *ksigmask;
-
-	if (sigsetsize != sizeof(compat_sigset_t))
-		return -EINVAL;
-	if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
-		return -EFAULT;
-	sigset_from_compat(&tmp, &ss32);
-	ksigmask = compat_alloc_user_space(sizeof(sigset_t));
-	if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t)))
-		return -EFAULT;
-
-	return sys_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags);
-}
-
-asmlinkage long compat_sys_signalfd(int ufd,
-				    const compat_sigset_t __user *sigmask,
-				    compat_size_t sigsetsize)
-{
-	return compat_sys_signalfd4(ufd, sigmask, sigsetsize, 0);
-}
-#endif /* CONFIG_SIGNALFD */
-
-#ifdef CONFIG_TIMERFD
-
-asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
-				   const struct compat_itimerspec __user *utmr,
-				   struct compat_itimerspec __user *otmr)
-{
-	int error;
-	struct itimerspec t;
-	struct itimerspec __user *ut;
-
-	if (get_compat_itimerspec(&t, utmr))
-		return -EFAULT;
-	ut = compat_alloc_user_space(2 * sizeof(struct itimerspec));
-	if (copy_to_user(&ut[0], &t, sizeof(t)))
-		return -EFAULT;
-	error = sys_timerfd_settime(ufd, flags, &ut[0], &ut[1]);
-	if (!error && otmr)
-		error = (copy_from_user(&t, &ut[1], sizeof(struct itimerspec)) ||
-			 put_compat_itimerspec(otmr, &t)) ? -EFAULT: 0;
-
-	return error;
-}
-
-asmlinkage long compat_sys_timerfd_gettime(int ufd,
-				   struct compat_itimerspec __user *otmr)
-{
-	int error;
-	struct itimerspec t;
-	struct itimerspec __user *ut;
-
-	ut = compat_alloc_user_space(sizeof(struct itimerspec));
-	error = sys_timerfd_gettime(ufd, ut);
-	if (!error)
-		error = (copy_from_user(&t, ut, sizeof(struct itimerspec)) ||
-			 put_compat_itimerspec(otmr, &t)) ? -EFAULT: 0;
-
-	return error;
-}
-
-#endif /* CONFIG_TIMERFD */
-
-#ifdef CONFIG_FHANDLE
-/*
- * Exactly like fs/open.c:sys_open_by_handle_at(), except that it
- * doesn't set the O_LARGEFILE flag.
- */
-asmlinkage long
-compat_sys_open_by_handle_at(int mountdirfd,
-			     struct file_handle __user *handle, int flags)
-{
-	return do_handle_open(mountdirfd, handle, flags);
-}
-#endif