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, 623 deletions

diff --git a/ANDROID_3.4.5/fs/ioctl.c b/ANDROID_3.4.5/fs/ioctl.c
deleted file mode 100644
index 29167beb..00000000
--- a/ANDROID_3.4.5/fs/ioctl.c
+++ /dev/null
@@ -1,623 +0,0 @@
-/*
- *  linux/fs/ioctl.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- */
-
-#include <linux/syscalls.h>
-#include <linux/mm.h>
-#include <linux/capability.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/security.h>
-#include <linux/export.h>
-#include <linux/uaccess.h>
-#include <linux/writeback.h>
-#include <linux/buffer_head.h>
-#include <linux/falloc.h>
-
-#include <asm/ioctls.h>
-
-/* So that the fiemap access checks can't overflow on 32 bit machines. */
-#define FIEMAP_MAX_EXTENTS	(UINT_MAX / sizeof(struct fiemap_extent))
-
-/**
- * vfs_ioctl - call filesystem specific ioctl methods
- * @filp:	open file to invoke ioctl method on
- * @cmd:	ioctl command to execute
- * @arg:	command-specific argument for ioctl
- *
- * Invokes filesystem specific ->unlocked_ioctl, if one exists; otherwise
- * returns -ENOTTY.
- *
- * Returns 0 on success, -errno on error.
- */
-static long vfs_ioctl(struct file *filp, unsigned int cmd,
-		      unsigned long arg)
-{
-	int error = -ENOTTY;
-
-	if (!filp->f_op || !filp->f_op->unlocked_ioctl)
-		goto out;
-
-	error = filp->f_op->unlocked_ioctl(filp, cmd, arg);
-	if (error == -ENOIOCTLCMD)
-		error = -ENOTTY;
- out:
-	return error;
-}
-
-static int ioctl_fibmap(struct file *filp, int __user *p)
-{
-	struct address_space *mapping = filp->f_mapping;
-	int res, block;
-
-	/* do we support this mess? */
-	if (!mapping->a_ops->bmap)
-		return -EINVAL;
-	if (!capable(CAP_SYS_RAWIO))
-		return -EPERM;
-	res = get_user(block, p);
-	if (res)
-		return res;
-	res = mapping->a_ops->bmap(mapping, block);
-	return put_user(res, p);
-}
-
-/**
- * fiemap_fill_next_extent - Fiemap helper function
- * @fieinfo:	Fiemap context passed into ->fiemap
- * @logical:	Extent logical start offset, in bytes
- * @phys:	Extent physical start offset, in bytes
- * @len:	Extent length, in bytes
- * @flags:	FIEMAP_EXTENT flags that describe this extent
- *
- * Called from file system ->fiemap callback. Will populate extent
- * info as passed in via arguments and copy to user memory. On
- * success, extent count on fieinfo is incremented.
- *
- * Returns 0 on success, -errno on error, 1 if this was the last
- * extent that will fit in user array.
- */
-#define SET_UNKNOWN_FLAGS	(FIEMAP_EXTENT_DELALLOC)
-#define SET_NO_UNMOUNTED_IO_FLAGS	(FIEMAP_EXTENT_DATA_ENCRYPTED)
-#define SET_NOT_ALIGNED_FLAGS	(FIEMAP_EXTENT_DATA_TAIL|FIEMAP_EXTENT_DATA_INLINE)
-int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical,
-			    u64 phys, u64 len, u32 flags)
-{
-	struct fiemap_extent extent;
-	struct fiemap_extent __user *dest = fieinfo->fi_extents_start;
-
-	/* only count the extents */
-	if (fieinfo->fi_extents_max == 0) {
-		fieinfo->fi_extents_mapped++;
-		return (flags & FIEMAP_EXTENT_LAST) ? 1 : 0;
-	}
-
-	if (fieinfo->fi_extents_mapped >= fieinfo->fi_extents_max)
-		return 1;
-
-	if (flags & SET_UNKNOWN_FLAGS)
-		flags |= FIEMAP_EXTENT_UNKNOWN;
-	if (flags & SET_NO_UNMOUNTED_IO_FLAGS)
-		flags |= FIEMAP_EXTENT_ENCODED;
-	if (flags & SET_NOT_ALIGNED_FLAGS)
-		flags |= FIEMAP_EXTENT_NOT_ALIGNED;
-
-	memset(&extent, 0, sizeof(extent));
-	extent.fe_logical = logical;
-	extent.fe_physical = phys;
-	extent.fe_length = len;
-	extent.fe_flags = flags;
-
-	dest += fieinfo->fi_extents_mapped;
-	if (copy_to_user(dest, &extent, sizeof(extent)))
-		return -EFAULT;
-
-	fieinfo->fi_extents_mapped++;
-	if (fieinfo->fi_extents_mapped == fieinfo->fi_extents_max)
-		return 1;
-	return (flags & FIEMAP_EXTENT_LAST) ? 1 : 0;
-}
-EXPORT_SYMBOL(fiemap_fill_next_extent);
-
-/**
- * fiemap_check_flags - check validity of requested flags for fiemap
- * @fieinfo:	Fiemap context passed into ->fiemap
- * @fs_flags:	Set of fiemap flags that the file system understands
- *
- * Called from file system ->fiemap callback. This will compute the
- * intersection of valid fiemap flags and those that the fs supports. That
- * value is then compared against the user supplied flags. In case of bad user
- * flags, the invalid values will be written into the fieinfo structure, and
- * -EBADR is returned, which tells ioctl_fiemap() to return those values to
- * userspace. For this reason, a return code of -EBADR should be preserved.
- *
- * Returns 0 on success, -EBADR on bad flags.
- */
-int fiemap_check_flags(struct fiemap_extent_info *fieinfo, u32 fs_flags)
-{
-	u32 incompat_flags;
-
-	incompat_flags = fieinfo->fi_flags & ~(FIEMAP_FLAGS_COMPAT & fs_flags);
-	if (incompat_flags) {
-		fieinfo->fi_flags = incompat_flags;
-		return -EBADR;
-	}
-	return 0;
-}
-EXPORT_SYMBOL(fiemap_check_flags);
-
-static int fiemap_check_ranges(struct super_block *sb,
-			       u64 start, u64 len, u64 *new_len)
-{
-	u64 maxbytes = (u64) sb->s_maxbytes;
-
-	*new_len = len;
-
-	if (len == 0)
-		return -EINVAL;
-
-	if (start > maxbytes)
-		return -EFBIG;
-
-	/*
-	 * Shrink request scope to what the fs can actually handle.
-	 */
-	if (len > maxbytes || (maxbytes - len) < start)
-		*new_len = maxbytes - start;
-
-	return 0;
-}
-
-static int ioctl_fiemap(struct file *filp, unsigned long arg)
-{
-	struct fiemap fiemap;
-	struct fiemap __user *ufiemap = (struct fiemap __user *) arg;
-	struct fiemap_extent_info fieinfo = { 0, };
-	struct inode *inode = filp->f_path.dentry->d_inode;
-	struct super_block *sb = inode->i_sb;
-	u64 len;
-	int error;
-
-	if (!inode->i_op->fiemap)
-		return -EOPNOTSUPP;
-
-	if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap)))
-		return -EFAULT;
-
-	if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS)
-		return -EINVAL;
-
-	error = fiemap_check_ranges(sb, fiemap.fm_start, fiemap.fm_length,
-				    &len);
-	if (error)
-		return error;
-
-	fieinfo.fi_flags = fiemap.fm_flags;
-	fieinfo.fi_extents_max = fiemap.fm_extent_count;
-	fieinfo.fi_extents_start = ufiemap->fm_extents;
-
-	if (fiemap.fm_extent_count != 0 &&
-	    !access_ok(VERIFY_WRITE, fieinfo.fi_extents_start,
-		       fieinfo.fi_extents_max * sizeof(struct fiemap_extent)))
-		return -EFAULT;
-
-	if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC)
-		filemap_write_and_wait(inode->i_mapping);
-
-	error = inode->i_op->fiemap(inode, &fieinfo, fiemap.fm_start, len);
-	fiemap.fm_flags = fieinfo.fi_flags;
-	fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped;
-	if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap)))
-		error = -EFAULT;
-
-	return error;
-}
-
-#ifdef CONFIG_BLOCK
-
-static inline sector_t logical_to_blk(struct inode *inode, loff_t offset)
-{
-	return (offset >> inode->i_blkbits);
-}
-
-static inline loff_t blk_to_logical(struct inode *inode, sector_t blk)
-{
-	return (blk << inode->i_blkbits);
-}
-
-/**
- * __generic_block_fiemap - FIEMAP for block based inodes (no locking)
- * @inode: the inode to map
- * @fieinfo: the fiemap info struct that will be passed back to userspace
- * @start: where to start mapping in the inode
- * @len: how much space to map
- * @get_block: the fs's get_block function
- *
- * This does FIEMAP for block based inodes.  Basically it will just loop
- * through get_block until we hit the number of extents we want to map, or we
- * go past the end of the file and hit a hole.
- *
- * If it is possible to have data blocks beyond a hole past @inode->i_size, then
- * please do not use this function, it will stop at the first unmapped block
- * beyond i_size.
- *
- * If you use this function directly, you need to do your own locking. Use
- * generic_block_fiemap if you want the locking done for you.
- */
-
-int __generic_block_fiemap(struct inode *inode,
-			   struct fiemap_extent_info *fieinfo, loff_t start,
-			   loff_t len, get_block_t *get_block)
-{
-	struct buffer_head map_bh;
-	sector_t start_blk, last_blk;
-	loff_t isize = i_size_read(inode);
-	u64 logical = 0, phys = 0, size = 0;
-	u32 flags = FIEMAP_EXTENT_MERGED;
-	bool past_eof = false, whole_file = false;
-	int ret = 0;
-
-	ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
-	if (ret)
-		return ret;
-
-	/*
-	 * Either the i_mutex or other appropriate locking needs to be held
-	 * since we expect isize to not change at all through the duration of
-	 * this call.
-	 */
-	if (len >= isize) {
-		whole_file = true;
-		len = isize;
-	}
-
-	/*
-	 * Some filesystems can't deal with being asked to map less than
-	 * blocksize, so make sure our len is at least block length.
-	 */
-	if (logical_to_blk(inode, len) == 0)
-		len = blk_to_logical(inode, 1);
-
-	start_blk = logical_to_blk(inode, start);
-	last_blk = logical_to_blk(inode, start + len - 1);
-
-	do {
-		/*
-		 * we set b_size to the total size we want so it will map as
-		 * many contiguous blocks as possible at once
-		 */
-		memset(&map_bh, 0, sizeof(struct buffer_head));
-		map_bh.b_size = len;
-
-		ret = get_block(inode, start_blk, &map_bh, 0);
-		if (ret)
-			break;
-
-		/* HOLE */
-		if (!buffer_mapped(&map_bh)) {
-			start_blk++;
-
-			/*
-			 * We want to handle the case where there is an
-			 * allocated block at the front of the file, and then
-			 * nothing but holes up to the end of the file properly,
-			 * to make sure that extent at the front gets properly
-			 * marked with FIEMAP_EXTENT_LAST
-			 */
-			if (!past_eof &&
-			    blk_to_logical(inode, start_blk) >= isize)
-				past_eof = 1;
-
-			/*
-			 * First hole after going past the EOF, this is our
-			 * last extent
-			 */
-			if (past_eof && size) {
-				flags = FIEMAP_EXTENT_MERGED|FIEMAP_EXTENT_LAST;
-				ret = fiemap_fill_next_extent(fieinfo, logical,
-							      phys, size,
-							      flags);
-			} else if (size) {
-				ret = fiemap_fill_next_extent(fieinfo, logical,
-							      phys, size, flags);
-				size = 0;
-			}
-
-			/* if we have holes up to/past EOF then we're done */
-			if (start_blk > last_blk || past_eof || ret)
-				break;
-		} else {
-			/*
-			 * We have gone over the length of what we wanted to
-			 * map, and it wasn't the entire file, so add the extent
-			 * we got last time and exit.
-			 *
-			 * This is for the case where say we want to map all the
-			 * way up to the second to the last block in a file, but
-			 * the last block is a hole, making the second to last
-			 * block FIEMAP_EXTENT_LAST.  In this case we want to
-			 * see if there is a hole after the second to last block
-			 * so we can mark it properly.  If we found data after
-			 * we exceeded the length we were requesting, then we
-			 * are good to go, just add the extent to the fieinfo
-			 * and break
-			 */
-			if (start_blk > last_blk && !whole_file) {
-				ret = fiemap_fill_next_extent(fieinfo, logical,
-							      phys, size,
-							      flags);
-				break;
-			}
-
-			/*
-			 * if size != 0 then we know we already have an extent
-			 * to add, so add it.
-			 */
-			if (size) {
-				ret = fiemap_fill_next_extent(fieinfo, logical,
-							      phys, size,
-							      flags);
-				if (ret)
-					break;
-			}
-
-			logical = blk_to_logical(inode, start_blk);
-			phys = blk_to_logical(inode, map_bh.b_blocknr);
-			size = map_bh.b_size;
-			flags = FIEMAP_EXTENT_MERGED;
-
-			start_blk += logical_to_blk(inode, size);
-
-			/*
-			 * If we are past the EOF, then we need to make sure as
-			 * soon as we find a hole that the last extent we found
-			 * is marked with FIEMAP_EXTENT_LAST
-			 */
-			if (!past_eof && logical + size >= isize)
-				past_eof = true;
-		}
-		cond_resched();
-	} while (1);
-
-	/* If ret is 1 then we just hit the end of the extent array */
-	if (ret == 1)
-		ret = 0;
-
-	return ret;
-}
-EXPORT_SYMBOL(__generic_block_fiemap);
-
-/**
- * generic_block_fiemap - FIEMAP for block based inodes
- * @inode: The inode to map
- * @fieinfo: The mapping information
- * @start: The initial block to map
- * @len: The length of the extect to attempt to map
- * @get_block: The block mapping function for the fs
- *
- * Calls __generic_block_fiemap to map the inode, after taking
- * the inode's mutex lock.
- */
-
-int generic_block_fiemap(struct inode *inode,
-			 struct fiemap_extent_info *fieinfo, u64 start,
-			 u64 len, get_block_t *get_block)
-{
-	int ret;
-	mutex_lock(&inode->i_mutex);
-	ret = __generic_block_fiemap(inode, fieinfo, start, len, get_block);
-	mutex_unlock(&inode->i_mutex);
-	return ret;
-}
-EXPORT_SYMBOL(generic_block_fiemap);
-
-#endif  /*  CONFIG_BLOCK  */
-
-/*
- * This provides compatibility with legacy XFS pre-allocation ioctls
- * which predate the fallocate syscall.
- *
- * Only the l_start, l_len and l_whence fields of the 'struct space_resv'
- * are used here, rest are ignored.
- */
-int ioctl_preallocate(struct file *filp, void __user *argp)
-{
-	struct inode *inode = filp->f_path.dentry->d_inode;
-	struct space_resv sr;
-
-	if (copy_from_user(&sr, argp, sizeof(sr)))
-		return -EFAULT;
-
-	switch (sr.l_whence) {
-	case SEEK_SET:
-		break;
-	case SEEK_CUR:
-		sr.l_start += filp->f_pos;
-		break;
-	case SEEK_END:
-		sr.l_start += i_size_read(inode);
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return do_fallocate(filp, FALLOC_FL_KEEP_SIZE, sr.l_start, sr.l_len);
-}
-
-static int file_ioctl(struct file *filp, unsigned int cmd,
-		unsigned long arg)
-{
-	struct inode *inode = filp->f_path.dentry->d_inode;
-	int __user *p = (int __user *)arg;
-
-	switch (cmd) {
-	case FIBMAP:
-		return ioctl_fibmap(filp, p);
-	case FIONREAD:
-		return put_user(i_size_read(inode) - filp->f_pos, p);
-	case FS_IOC_RESVSP:
-	case FS_IOC_RESVSP64:
-		return ioctl_preallocate(filp, p);
-	}
-
-	return vfs_ioctl(filp, cmd, arg);
-}
-
-static int ioctl_fionbio(struct file *filp, int __user *argp)
-{
-	unsigned int flag;
-	int on, error;
-
-	error = get_user(on, argp);
-	if (error)
-		return error;
-	flag = O_NONBLOCK;
-#ifdef __sparc__
-	/* SunOS compatibility item. */
-	if (O_NONBLOCK != O_NDELAY)
-		flag |= O_NDELAY;
-#endif
-	spin_lock(&filp->f_lock);
-	if (on)
-		filp->f_flags |= flag;
-	else
-		filp->f_flags &= ~flag;
-	spin_unlock(&filp->f_lock);
-	return error;
-}
-
-static int ioctl_fioasync(unsigned int fd, struct file *filp,
-			  int __user *argp)
-{
-	unsigned int flag;
-	int on, error;
-
-	error = get_user(on, argp);
-	if (error)
-		return error;
-	flag = on ? FASYNC : 0;
-
-	/* Did FASYNC state change ? */
-	if ((flag ^ filp->f_flags) & FASYNC) {
-		if (filp->f_op && filp->f_op->fasync)
-			/* fasync() adjusts filp->f_flags */
-			error = filp->f_op->fasync(fd, filp, on);
-		else
-			error = -ENOTTY;
-	}
-	return error < 0 ? error : 0;
-}
-
-static int ioctl_fsfreeze(struct file *filp)
-{
-	struct super_block *sb = filp->f_path.dentry->d_inode->i_sb;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
-	/* If filesystem doesn't support freeze feature, return. */
-	if (sb->s_op->freeze_fs == NULL)
-		return -EOPNOTSUPP;
-
-	/* Freeze */
-	return freeze_super(sb);
-}
-
-static int ioctl_fsthaw(struct file *filp)
-{
-	struct super_block *sb = filp->f_path.dentry->d_inode->i_sb;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
-	/* Thaw */
-	return thaw_super(sb);
-}
-
-/*
- * When you add any new common ioctls to the switches above and below
- * please update compat_sys_ioctl() too.
- *
- * do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
- * It's just a simple helper for sys_ioctl and compat_sys_ioctl.
- */
-int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
-	     unsigned long arg)
-{
-	int error = 0;
-	int __user *argp = (int __user *)arg;
-	struct inode *inode = filp->f_path.dentry->d_inode;
-
-	switch (cmd) {
-	case FIOCLEX:
-		set_close_on_exec(fd, 1);
-		break;
-
-	case FIONCLEX:
-		set_close_on_exec(fd, 0);
-		break;
-
-	case FIONBIO:
-		error = ioctl_fionbio(filp, argp);
-		break;
-
-	case FIOASYNC:
-		error = ioctl_fioasync(fd, filp, argp);
-		break;
-
-	case FIOQSIZE:
-		if (S_ISDIR(inode->i_mode) || S_ISREG(inode->i_mode) ||
-		    S_ISLNK(inode->i_mode)) {
-			loff_t res = inode_get_bytes(inode);
-			error = copy_to_user(argp, &res, sizeof(res)) ?
-					-EFAULT : 0;
-		} else
-			error = -ENOTTY;
-		break;
-
-	case FIFREEZE:
-		error = ioctl_fsfreeze(filp);
-		break;
-
-	case FITHAW:
-		error = ioctl_fsthaw(filp);
-		break;
-
-	case FS_IOC_FIEMAP:
-		return ioctl_fiemap(filp, arg);
-
-	case FIGETBSZ:
-		return put_user(inode->i_sb->s_blocksize, argp);
-
-	default:
-		if (S_ISREG(inode->i_mode))
-			error = file_ioctl(filp, cmd, arg);
-		else
-			error = vfs_ioctl(filp, cmd, arg);
-		break;
-	}
-	return error;
-}
-
-SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, unsigned long, arg)
-{
-	struct file *filp;
-	int error = -EBADF;
-	int fput_needed;
-
-	filp = fget_light(fd, &fput_needed);
-	if (!filp)
-		goto out;
-
-	error = security_file_ioctl(filp, cmd, arg);
-	if (error)
-		goto out_fput;
-
-	error = do_vfs_ioctl(filp, fd, cmd, arg);
- out_fput:
-	fput_light(filp, fput_needed);
- out:
-	return error;
-}