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fs/adfs: dir: add helper to read directory using inode

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Add a helper to read a directory using the inode, which we do in two
places.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Russell King 2019-12-09 11:09:40 +00:00 committed by Al Viro
parent 419a6e5e82
commit 90011c7ad9
1 changed files with 22 additions and 10 deletions
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32
fs/adfs/dir.c
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@ -137,6 +137,26 @@ static int adfs_dir_read(struct super_block *sb, u32 indaddr,
return ADFS_SB(sb)->s_dir->read(sb, indaddr, size, dir);
}
static int adfs_dir_read_inode(struct super_block *sb, struct inode *inode,
struct adfs_dir *dir)
{
int ret;
ret = adfs_dir_read(sb, inode->i_ino, inode->i_size, dir);
if (ret)
return ret;
if (ADFS_I(inode)->parent_id != dir->parent_id) {
adfs_error(sb,
"parent directory id changed under me! (%06x but got %06x)\n",
ADFS_I(inode)->parent_id, dir->parent_id);
adfs_dir_relse(dir);
ret = -EIO;
}
return ret;
}
static int adfs_dir_sync(struct adfs_dir *dir)
{
int err = 0;
@ -203,7 +223,7 @@ adfs_readdir(struct file *file, struct dir_context *ctx)
if (ctx->pos >> 32)
return 0;
ret = adfs_dir_read(sb, inode->i_ino, inode->i_size, &dir);
ret = adfs_dir_read_inode(sb, inode, &dir);
if (ret)
return ret;
@ -304,18 +324,10 @@ static int adfs_dir_lookup_byname(struct inode *inode, const struct qstr *qstr,
u32 name_len;
int ret;
ret = adfs_dir_read(sb, inode->i_ino, inode->i_size, &dir);
ret = adfs_dir_read_inode(sb, inode, &dir);
if (ret)
goto out;
if (ADFS_I(inode)->parent_id != dir.parent_id) {
adfs_error(sb,
"parent directory changed under me! (%06x but got %06x)\n",
ADFS_I(inode)->parent_id, dir.parent_id);
ret = -EIO;
goto free_out;
}
obj->parent_id = inode->i_ino;
read_lock(&adfs_dir_lock);