summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/fs/hfs/dir.c
diff options
context:
space:
mode:
Diffstat (limited to 'ANDROID_3.4.5/fs/hfs/dir.c')
-rw-r--r--ANDROID_3.4.5/fs/hfs/dir.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/ANDROID_3.4.5/fs/hfs/dir.c b/ANDROID_3.4.5/fs/hfs/dir.c
deleted file mode 100644
index 62fc14ea..00000000
--- a/ANDROID_3.4.5/fs/hfs/dir.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * linux/fs/hfs/dir.c
- *
- * Copyright (C) 1995-1997 Paul H. Hargrove
- * (C) 2003 Ardis Technologies <roman@ardistech.com>
- * This file may be distributed under the terms of the GNU General Public License.
- *
- * This file contains directory-related functions independent of which
- * scheme is being used to represent forks.
- *
- * Based on the minix file system code, (C) 1991, 1992 by Linus Torvalds
- */
-
-#include "hfs_fs.h"
-#include "btree.h"
-
-/*
- * hfs_lookup()
- */
-static struct dentry *hfs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
-{
- hfs_cat_rec rec;
- struct hfs_find_data fd;
- struct inode *inode = NULL;
- int res;
-
- hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
- hfs_cat_build_key(dir->i_sb, fd.search_key, dir->i_ino, &dentry->d_name);
- res = hfs_brec_read(&fd, &rec, sizeof(rec));
- if (res) {
- hfs_find_exit(&fd);
- if (res == -ENOENT) {
- /* No such entry */
- inode = NULL;
- goto done;
- }
- return ERR_PTR(res);
- }
- inode = hfs_iget(dir->i_sb, &fd.search_key->cat, &rec);
- hfs_find_exit(&fd);
- if (!inode)
- return ERR_PTR(-EACCES);
-done:
- d_add(dentry, inode);
- return NULL;
-}
-
-/*
- * hfs_readdir
- */
-static int hfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
-{
- struct inode *inode = filp->f_path.dentry->d_inode;
- struct super_block *sb = inode->i_sb;
- int len, err;
- char strbuf[HFS_MAX_NAMELEN];
- union hfs_cat_rec entry;
- struct hfs_find_data fd;
- struct hfs_readdir_data *rd;
- u16 type;
-
- if (filp->f_pos >= inode->i_size)
- return 0;
-
- hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
- hfs_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
- err = hfs_brec_find(&fd);
- if (err)
- goto out;
-
- switch ((u32)filp->f_pos) {
- case 0:
- /* This is completely artificial... */
- if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
- goto out;
- filp->f_pos++;
- /* fall through */
- case 1:
- if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) {
- err = -EIO;
- goto out;
- }
-
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
- if (entry.type != HFS_CDR_THD) {
- printk(KERN_ERR "hfs: bad catalog folder thread\n");
- err = -EIO;
- goto out;
- }
- //if (fd.entrylength < HFS_MIN_THREAD_SZ) {
- // printk(KERN_ERR "hfs: truncated catalog thread\n");
- // err = -EIO;
- // goto out;
- //}
- if (filldir(dirent, "..", 2, 1,
- be32_to_cpu(entry.thread.ParID), DT_DIR))
- goto out;
- filp->f_pos++;
- /* fall through */
- default:
- if (filp->f_pos >= inode->i_size)
- goto out;
- err = hfs_brec_goto(&fd, filp->f_pos - 1);
- if (err)
- goto out;
- }
-
- for (;;) {
- if (be32_to_cpu(fd.key->cat.ParID) != inode->i_ino) {
- printk(KERN_ERR "hfs: walked past end of dir\n");
- err = -EIO;
- goto out;
- }
-
- if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) {
- err = -EIO;
- goto out;
- }
-
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
- type = entry.type;
- len = hfs_mac2asc(sb, strbuf, &fd.key->cat.CName);
- if (type == HFS_CDR_DIR) {
- if (fd.entrylength < sizeof(struct hfs_cat_dir)) {
- printk(KERN_ERR "hfs: small dir entry\n");
- err = -EIO;
- goto out;
- }
- if (filldir(dirent, strbuf, len, filp->f_pos,
- be32_to_cpu(entry.dir.DirID), DT_DIR))
- break;
- } else if (type == HFS_CDR_FIL) {
- if (fd.entrylength < sizeof(struct hfs_cat_file)) {
- printk(KERN_ERR "hfs: small file entry\n");
- err = -EIO;
- goto out;
- }
- if (filldir(dirent, strbuf, len, filp->f_pos,
- be32_to_cpu(entry.file.FlNum), DT_REG))
- break;
- } else {
- printk(KERN_ERR "hfs: bad catalog entry type %d\n", type);
- err = -EIO;
- goto out;
- }
- filp->f_pos++;
- if (filp->f_pos >= inode->i_size)
- goto out;
- err = hfs_brec_goto(&fd, 1);
- if (err)
- goto out;
- }
- rd = filp->private_data;
- if (!rd) {
- rd = kmalloc(sizeof(struct hfs_readdir_data), GFP_KERNEL);
- if (!rd) {
- err = -ENOMEM;
- goto out;
- }
- filp->private_data = rd;
- rd->file = filp;
- list_add(&rd->list, &HFS_I(inode)->open_dir_list);
- }
- memcpy(&rd->key, &fd.key, sizeof(struct hfs_cat_key));
-out:
- hfs_find_exit(&fd);
- return err;
-}
-
-static int hfs_dir_release(struct inode *inode, struct file *file)
-{
- struct hfs_readdir_data *rd = file->private_data;
- if (rd) {
- list_del(&rd->list);
- kfree(rd);
- }
- return 0;
-}
-
-/*
- * hfs_create()
- *
- * This is the create() entry in the inode_operations structure for
- * regular HFS directories. The purpose is to create a new file in
- * a directory and return a corresponding inode, given the inode for
- * the directory and the name (and its length) of the new file.
- */
-static int hfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
- struct nameidata *nd)
-{
- struct inode *inode;
- int res;
-
- inode = hfs_new_inode(dir, &dentry->d_name, mode);
- if (!inode)
- return -ENOSPC;
-
- res = hfs_cat_create(inode->i_ino, dir, &dentry->d_name, inode);
- if (res) {
- clear_nlink(inode);
- hfs_delete_inode(inode);
- iput(inode);
- return res;
- }
- d_instantiate(dentry, inode);
- mark_inode_dirty(inode);
- return 0;
-}
-
-/*
- * hfs_mkdir()
- *
- * This is the mkdir() entry in the inode_operations structure for
- * regular HFS directories. The purpose is to create a new directory
- * in a directory, given the inode for the parent directory and the
- * name (and its length) of the new directory.
- */
-static int hfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
-{
- struct inode *inode;
- int res;
-
- inode = hfs_new_inode(dir, &dentry->d_name, S_IFDIR | mode);
- if (!inode)
- return -ENOSPC;
-
- res = hfs_cat_create(inode->i_ino, dir, &dentry->d_name, inode);
- if (res) {
- clear_nlink(inode);
- hfs_delete_inode(inode);
- iput(inode);
- return res;
- }
- d_instantiate(dentry, inode);
- mark_inode_dirty(inode);
- return 0;
-}
-
-/*
- * hfs_remove()
- *
- * This serves as both unlink() and rmdir() in the inode_operations
- * structure for regular HFS directories. The purpose is to delete
- * an existing child, given the inode for the parent directory and
- * the name (and its length) of the existing directory.
- *
- * HFS does not have hardlinks, so both rmdir and unlink set the
- * link count to 0. The only difference is the emptiness check.
- */
-static int hfs_remove(struct inode *dir, struct dentry *dentry)
-{
- struct inode *inode = dentry->d_inode;
- int res;
-
- if (S_ISDIR(inode->i_mode) && inode->i_size != 2)
- return -ENOTEMPTY;
- res = hfs_cat_delete(inode->i_ino, dir, &dentry->d_name);
- if (res)
- return res;
- clear_nlink(inode);
- inode->i_ctime = CURRENT_TIME_SEC;
- hfs_delete_inode(inode);
- mark_inode_dirty(inode);
- return 0;
-}
-
-/*
- * hfs_rename()
- *
- * This is the rename() entry in the inode_operations structure for
- * regular HFS directories. The purpose is to rename an existing
- * file or directory, given the inode for the current directory and
- * the name (and its length) of the existing file/directory and the
- * inode for the new directory and the name (and its length) of the
- * new file/directory.
- * XXX: how do you handle must_be dir?
- */
-static int hfs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry)
-{
- int res;
-
- /* Unlink destination if it already exists */
- if (new_dentry->d_inode) {
- res = hfs_remove(new_dir, new_dentry);
- if (res)
- return res;
- }
-
- res = hfs_cat_move(old_dentry->d_inode->i_ino,
- old_dir, &old_dentry->d_name,
- new_dir, &new_dentry->d_name);
- if (!res)
- hfs_cat_build_key(old_dir->i_sb,
- (btree_key *)&HFS_I(old_dentry->d_inode)->cat_key,
- new_dir->i_ino, &new_dentry->d_name);
- return res;
-}
-
-const struct file_operations hfs_dir_operations = {
- .read = generic_read_dir,
- .readdir = hfs_readdir,
- .llseek = generic_file_llseek,
- .release = hfs_dir_release,
-};
-
-const struct inode_operations hfs_dir_inode_operations = {
- .create = hfs_create,
- .lookup = hfs_lookup,
- .unlink = hfs_remove,
- .mkdir = hfs_mkdir,
- .rmdir = hfs_remove,
- .rename = hfs_rename,
- .setattr = hfs_inode_setattr,
-};