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Subject[PATCH 13/29] FAT: Use "struct fat_slot_info" for msdos_find()
From
Date

The msdos_find() provide the "struct fat_slot_info". Then some cleanups.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
---
fs/msdos/namei.c | 88 ++++++++++++++++++++++---------------------------------
1 files changed, 36 insertions(+), 52 deletions(-)
diff -puN fs/msdos/namei.c~sync06-fat_dir-cleanup6 fs/msdos/namei.c
--- linux-2.6.11/fs/msdos/namei.c~sync06-fat_dir-cleanup6 2005-03-06 02:36:39.000000000 +0900
+++ linux-2.6.11-hirofumi/fs/msdos/namei.c 2005-03-06 02:36:39.000000000 +0900
@@ -137,11 +137,9 @@ static int msdos_format_name(const unsig

/***** Locates a directory entry. Uses unformatted name. */
static int msdos_find(struct inode *dir, const unsigned char *name, int len,
- struct buffer_head **bh, struct msdos_dir_entry **de,
- loff_t *i_pos)
+ struct fat_slot_info *sinfo)
{
struct msdos_sb_info *sbi = MSDOS_SB(dir->i_sb);
- struct fat_slot_info sinfo;
unsigned char msdos_name[MSDOS_NAME];
int err;

@@ -149,22 +147,17 @@ static int msdos_find(struct inode *dir,
if (err)
return -ENOENT;

- err = fat_scan(dir, msdos_name, &sinfo);
+ err = fat_scan(dir, msdos_name, sinfo);
if (!err && sbi->options.dotsOK) {
if (name[0] == '.') {
- if (!(sinfo.de->attr & ATTR_HIDDEN))
+ if (!(sinfo->de->attr & ATTR_HIDDEN))
err = -ENOENT;
} else {
- if (sinfo.de->attr & ATTR_HIDDEN)
+ if (sinfo->de->attr & ATTR_HIDDEN)
err = -ENOENT;
}
if (err)
- brelse(sinfo.bh);
- }
- if (!err) {
- *i_pos = sinfo.i_pos;
- *de = sinfo.de;
- *bh = sinfo.bh;
+ brelse(sinfo->bh);
}
return err;
}
@@ -228,22 +221,20 @@ static struct dentry *msdos_lookup(struc
struct nameidata *nd)
{
struct super_block *sb = dir->i_sb;
+ struct fat_slot_info sinfo;
struct inode *inode = NULL;
- struct msdos_dir_entry *de;
- struct buffer_head *bh = NULL;
- loff_t i_pos;
int res;

dentry->d_op = &msdos_dentry_operations;

lock_kernel();
- res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &bh,
- &de, &i_pos);
+ res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
if (res == -ENOENT)
goto add;
if (res < 0)
goto out;
- inode = fat_build_inode(sb, de, i_pos);
+ inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
+ brelse(sinfo.bh);
if (IS_ERR(inode)) {
res = PTR_ERR(inode);
goto out;
@@ -254,7 +245,6 @@ add:
if (dentry)
dentry->d_op = &msdos_dentry_operations;
out:
- brelse(bh);
unlock_kernel();
if (!res)
return dentry;
@@ -341,39 +331,35 @@ static int msdos_create(struct inode *di
static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
- loff_t i_pos;
- int res;
- struct buffer_head *bh;
- struct msdos_dir_entry *de;
+ struct fat_slot_info sinfo;
+ int err;

- bh = NULL;
lock_kernel();
- res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len,
- &bh, &de, &i_pos);
- if (res < 0)
- goto rmdir_done;
/*
* Check whether the directory is not in use, then check
* whether it is empty.
*/
- res = fat_dir_empty(inode);
- if (res)
- goto rmdir_done;
+ err = fat_dir_empty(inode);
+ if (err)
+ goto out;
+ err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
+ if (err)
+ goto out;

- de->name[0] = DELETED_FLAG;
- mark_buffer_dirty(bh);
+ sinfo.de->name[0] = DELETED_FLAG;
+ mark_buffer_dirty(sinfo.bh);
+ brelse(sinfo.bh);
fat_detach(inode);
inode->i_nlink = 0;
inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
- dir->i_nlink--;
mark_inode_dirty(inode);
- mark_inode_dirty(dir);
- res = 0;

-rmdir_done:
- brelse(bh);
+ dir->i_nlink--;
+ mark_inode_dirty(dir);
+out:
unlock_kernel();
- return res;
+
+ return err;
}

/***** Make a directory */
@@ -420,6 +406,7 @@ static int msdos_mkdir(struct inode *dir
if (res)
goto mkdir_error;
brelse(bh);
+
d_instantiate(dentry, inode);
res = 0;

@@ -445,30 +432,27 @@ mkdir_error:
static int msdos_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
- loff_t i_pos;
- int res;
- struct buffer_head *bh;
- struct msdos_dir_entry *de;
+ struct fat_slot_info sinfo;
+ int err;

- bh = NULL;
lock_kernel();
- res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len,
- &bh, &de, &i_pos);
- if (res < 0)
+ err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
+ if (err)
goto unlink_done;

- de->name[0] = DELETED_FLAG;
- mark_buffer_dirty(bh);
+ sinfo.de->name[0] = DELETED_FLAG;
+ mark_buffer_dirty(sinfo.bh);
+ brelse(sinfo.bh);
fat_detach(inode);
- brelse(bh);
inode->i_nlink = 0;
inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
+
mark_inode_dirty(dir);
- res = 0;
unlink_done:
unlock_kernel();
- return res;
+
+ return err;
}

static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
_
-
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