/*
* 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_rmdir()
*
* This is the rmdir() entry in the inode_operations structure for
* regular HFS directories. The purpose is to delete an existing
* directory, given the inode for the parent directory and the name
* (and its length) of the existing directory.
*/
int hfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode;
int res;
inode = dentry->d_inode;
if (inode->i_size != 2)
return -ENOTEMPTY;
res = hfs_cat_delete(inode->i_ino, dir, &dentry->d_name);
if (res)
return res;
inode->i_nlink = 0;
inode->i_ctime = CURRENT_TIME;
hfs_delete_inode(inode);
mark_inode_dirty(inode);
return 0;
}
/*
* hfs_unlink()
*
* This is the unlink() entry in the inode_operations structure for
* regular HFS directories. The purpose is to delete an existing
* file, given the inode for the parent directory and the name
* (and its length) of the existing file.
*/
int hfs_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode *inode;
int res;
inode = dentry->d_inode;
res = hfs_cat_delete(inode->i_ino, dir, &dentry->d_name);
if (res)
return res;
inode->i_nlink--;
hfs_delete_inode(inode);
inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
return res;
}
/*
* 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, int 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) {
inode->i_nlink = 0;
hfs_delete_inode(inode);
iput(inode);
return res;
}
d_instantiate(dentry, inode);
mark_inode_dirty(inode);
return 0;
}
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;
}
