1 files changed, 0 insertions, 313 deletions

diff --git a/ANDROID_3.4.5/fs/efs/inode.c b/ANDROID_3.4.5/fs/efs/inode.c
deleted file mode 100644
index bc84f365..00000000
--- a/ANDROID_3.4.5/fs/efs/inode.c
+++ /dev/null
@@ -1,313 +0,0 @@
-/*
- * inode.c
- *
- * Copyright (c) 1999 Al Smith
- *
- * Portions derived from work (c) 1995,1996 Christian Vogelgsang,
- *              and from work (c) 1998 Mike Shaver.
- */
-
-#include <linux/buffer_head.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include "efs.h"
-#include <linux/efs_fs_sb.h>
-
-static int efs_readpage(struct file *file, struct page *page)
-{
-	return block_read_full_page(page,efs_get_block);
-}
-static sector_t _efs_bmap(struct address_space *mapping, sector_t block)
-{
-	return generic_block_bmap(mapping,block,efs_get_block);
-}
-static const struct address_space_operations efs_aops = {
-	.readpage = efs_readpage,
-	.bmap = _efs_bmap
-};
-
-static inline void extent_copy(efs_extent *src, efs_extent *dst) {
-	/*
-	 * this is slightly evil. it doesn't just copy
-	 * efs_extent from src to dst, it also mangles
-	 * the bits so that dst ends up in cpu byte-order.
-	 */
-
-	dst->cooked.ex_magic  =  (unsigned int) src->raw[0];
-	dst->cooked.ex_bn     = ((unsigned int) src->raw[1] << 16) |
-				((unsigned int) src->raw[2] <<  8) |
-				((unsigned int) src->raw[3] <<  0);
-	dst->cooked.ex_length =  (unsigned int) src->raw[4];
-	dst->cooked.ex_offset = ((unsigned int) src->raw[5] << 16) |
-				((unsigned int) src->raw[6] <<  8) |
-				((unsigned int) src->raw[7] <<  0);
-	return;
-}
-
-struct inode *efs_iget(struct super_block *super, unsigned long ino)
-{
-	int i, inode_index;
-	dev_t device;
-	u32 rdev;
-	struct buffer_head *bh;
-	struct efs_sb_info    *sb = SUPER_INFO(super);
-	struct efs_inode_info *in;
-	efs_block_t block, offset;
-	struct efs_dinode *efs_inode;
-	struct inode *inode;
-
-	inode = iget_locked(super, ino);
-	if (IS_ERR(inode))
-		return ERR_PTR(-ENOMEM);
-	if (!(inode->i_state & I_NEW))
-		return inode;
-
-	in = INODE_INFO(inode);
-
-	/*
-	** EFS layout:
-	**
-	** |   cylinder group    |   cylinder group    |   cylinder group ..etc
-	** |inodes|data          |inodes|data          |inodes|data       ..etc
-	**
-	** work out the inode block index, (considering initially that the
-	** inodes are stored as consecutive blocks). then work out the block
-	** number of that inode given the above layout, and finally the
-	** offset of the inode within that block.
-	*/
-
-	inode_index = inode->i_ino /
-		(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
-
-	block = sb->fs_start + sb->first_block + 
-		(sb->group_size * (inode_index / sb->inode_blocks)) +
-		(inode_index % sb->inode_blocks);
-
-	offset = (inode->i_ino %
-			(EFS_BLOCKSIZE / sizeof(struct efs_dinode))) *
-		sizeof(struct efs_dinode);
-
-	bh = sb_bread(inode->i_sb, block);
-	if (!bh) {
-		printk(KERN_WARNING "EFS: bread() failed at block %d\n", block);
-		goto read_inode_error;
-	}
-
-	efs_inode = (struct efs_dinode *) (bh->b_data + offset);
-    
-	inode->i_mode  = be16_to_cpu(efs_inode->di_mode);
-	set_nlink(inode, be16_to_cpu(efs_inode->di_nlink));
-	inode->i_uid   = (uid_t)be16_to_cpu(efs_inode->di_uid);
-	inode->i_gid   = (gid_t)be16_to_cpu(efs_inode->di_gid);
-	inode->i_size  = be32_to_cpu(efs_inode->di_size);
-	inode->i_atime.tv_sec = be32_to_cpu(efs_inode->di_atime);
-	inode->i_mtime.tv_sec = be32_to_cpu(efs_inode->di_mtime);
-	inode->i_ctime.tv_sec = be32_to_cpu(efs_inode->di_ctime);
-	inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0;
-
-	/* this is the number of blocks in the file */
-	if (inode->i_size == 0) {
-		inode->i_blocks = 0;
-	} else {
-		inode->i_blocks = ((inode->i_size - 1) >> EFS_BLOCKSIZE_BITS) + 1;
-	}
-
-	rdev = be16_to_cpu(efs_inode->di_u.di_dev.odev);
-	if (rdev == 0xffff) {
-		rdev = be32_to_cpu(efs_inode->di_u.di_dev.ndev);
-		if (sysv_major(rdev) > 0xfff)
-			device = 0;
-		else
-			device = MKDEV(sysv_major(rdev), sysv_minor(rdev));
-	} else
-		device = old_decode_dev(rdev);
-
-	/* get the number of extents for this object */
-	in->numextents = be16_to_cpu(efs_inode->di_numextents);
-	in->lastextent = 0;
-
-	/* copy the extents contained within the inode to memory */
-	for(i = 0; i < EFS_DIRECTEXTENTS; i++) {
-		extent_copy(&(efs_inode->di_u.di_extents[i]), &(in->extents[i]));
-		if (i < in->numextents && in->extents[i].cooked.ex_magic != 0) {
-			printk(KERN_WARNING "EFS: extent %d has bad magic number in inode %lu\n", i, inode->i_ino);
-			brelse(bh);
-			goto read_inode_error;
-		}
-	}
-
-	brelse(bh);
-   
-#ifdef DEBUG
-	printk(KERN_DEBUG "EFS: efs_iget(): inode %lu, extents %d, mode %o\n",
-		inode->i_ino, in->numextents, inode->i_mode);
-#endif
-
-	switch (inode->i_mode & S_IFMT) {
-		case S_IFDIR: 
-			inode->i_op = &efs_dir_inode_operations; 
-			inode->i_fop = &efs_dir_operations; 
-			break;
-		case S_IFREG:
-			inode->i_fop = &generic_ro_fops;
-			inode->i_data.a_ops = &efs_aops;
-			break;
-		case S_IFLNK:
-			inode->i_op = &page_symlink_inode_operations;
-			inode->i_data.a_ops = &efs_symlink_aops;
-			break;
-		case S_IFCHR:
-		case S_IFBLK:
-		case S_IFIFO:
-			init_special_inode(inode, inode->i_mode, device);
-			break;
-		default:
-			printk(KERN_WARNING "EFS: unsupported inode mode %o\n", inode->i_mode);
-			goto read_inode_error;
-			break;
-	}
-
-	unlock_new_inode(inode);
-	return inode;
-        
-read_inode_error:
-	printk(KERN_WARNING "EFS: failed to read inode %lu\n", inode->i_ino);
-	iget_failed(inode);
-	return ERR_PTR(-EIO);
-}
-
-static inline efs_block_t
-efs_extent_check(efs_extent *ptr, efs_block_t block, struct efs_sb_info *sb) {
-	efs_block_t start;
-	efs_block_t length;
-	efs_block_t offset;
-
-	/*
-	 * given an extent and a logical block within a file,
-	 * can this block be found within this extent ?
-	 */
-	start  = ptr->cooked.ex_bn;
-	length = ptr->cooked.ex_length;
-	offset = ptr->cooked.ex_offset;
-
-	if ((block >= offset) && (block < offset+length)) {
-		return(sb->fs_start + start + block - offset);
-	} else {
-		return 0;
-	}
-}
-
-efs_block_t efs_map_block(struct inode *inode, efs_block_t block) {
-	struct efs_sb_info    *sb = SUPER_INFO(inode->i_sb);
-	struct efs_inode_info *in = INODE_INFO(inode);
-	struct buffer_head    *bh = NULL;
-
-	int cur, last, first = 1;
-	int ibase, ioffset, dirext, direxts, indext, indexts;
-	efs_block_t iblock, result = 0, lastblock = 0;
-	efs_extent ext, *exts;
-
-	last = in->lastextent;
-
-	if (in->numextents <= EFS_DIRECTEXTENTS) {
-		/* first check the last extent we returned */
-		if ((result = efs_extent_check(&in->extents[last], block, sb)))
-			return result;
-    
-		/* if we only have one extent then nothing can be found */
-		if (in->numextents == 1) {
-			printk(KERN_ERR "EFS: map_block() failed to map (1 extent)\n");
-			return 0;
-		}
-
-		direxts = in->numextents;
-
-		/*
-		 * check the stored extents in the inode
-		 * start with next extent and check forwards
-		 */
-		for(dirext = 1; dirext < direxts; dirext++) {
-			cur = (last + dirext) % in->numextents;
-			if ((result = efs_extent_check(&in->extents[cur], block, sb))) {
-				in->lastextent = cur;
-				return result;
-			}
-		}
-
-		printk(KERN_ERR "EFS: map_block() failed to map block %u (dir)\n", block);
-		return 0;
-	}
-
-#ifdef DEBUG
-	printk(KERN_DEBUG "EFS: map_block(): indirect search for logical block %u\n", block);
-#endif
-	direxts = in->extents[0].cooked.ex_offset;
-	indexts = in->numextents;
-
-	for(indext = 0; indext < indexts; indext++) {
-		cur = (last + indext) % indexts;
-
-		/*
-		 * work out which direct extent contains `cur'.
-		 *
-		 * also compute ibase: i.e. the number of the first
-		 * indirect extent contained within direct extent `cur'.
-		 *
-		 */
-		ibase = 0;
-		for(dirext = 0; cur < ibase && dirext < direxts; dirext++) {
-			ibase += in->extents[dirext].cooked.ex_length *
-				(EFS_BLOCKSIZE / sizeof(efs_extent));
-		}
-
-		if (dirext == direxts) {
-			/* should never happen */
-			printk(KERN_ERR "EFS: couldn't find direct extent for indirect extent %d (block %u)\n", cur, block);
-			if (bh) brelse(bh);
-			return 0;
-		}
-		
-		/* work out block number and offset of this indirect extent */
-		iblock = sb->fs_start + in->extents[dirext].cooked.ex_bn +
-			(cur - ibase) /
-			(EFS_BLOCKSIZE / sizeof(efs_extent));
-		ioffset = (cur - ibase) %
-			(EFS_BLOCKSIZE / sizeof(efs_extent));
-
-		if (first || lastblock != iblock) {
-			if (bh) brelse(bh);
-
-			bh = sb_bread(inode->i_sb, iblock);
-			if (!bh) {
-				printk(KERN_ERR "EFS: bread() failed at block %d\n", iblock);
-				return 0;
-			}
-#ifdef DEBUG
-			printk(KERN_DEBUG "EFS: map_block(): read indirect extent block %d\n", iblock);
-#endif
-			first = 0;
-			lastblock = iblock;
-		}
-
-		exts = (efs_extent *) bh->b_data;
-
-		extent_copy(&(exts[ioffset]), &ext);
-
-		if (ext.cooked.ex_magic != 0) {
-			printk(KERN_ERR "EFS: extent %d has bad magic number in block %d\n", cur, iblock);
-			if (bh) brelse(bh);
-			return 0;
-		}
-
-		if ((result = efs_extent_check(&ext, block, sb))) {
-			if (bh) brelse(bh);
-			in->lastextent = cur;
-			return result;
-		}
-	}
-	if (bh) brelse(bh);
-	printk(KERN_ERR "EFS: map_block() failed to map block %u (indir)\n", block);
-	return 0;
-}  
-
-MODULE_LICENSE("GPL");