/**
* ecryptfs_interpose
* @lower_dentry: Existing dentry in the lower filesystem
* @dentry: ecryptfs' dentry
* @sb: ecryptfs's super_block
*
* Interposes upper and lower dentries.
*
* Returns zero on success; non-zero otherwise
*/
static int ecryptfs_interpose(struct dentry *lower_dentry,
struct dentry *dentry, struct super_block *sb)
{
struct inode *inode = ecryptfs_get_inode(lower_dentry->d_inode, sb);
if (IS_ERR(inode))
return PTR_ERR(inode);
d_instantiate(dentry, inode);
return 0;
}
/**
* ecryptfs_interpose
* @lower_dentry: Existing dentry in the lower filesystem
* @dentry: ecryptfs' dentry
* @sb: ecryptfs's super_block
*
* Interposes upper and lower dentries.
*
* Returns zero on success; non-zero otherwise
*/
static int ecryptfs_interpose(struct dentry *lower_dentry,
struct dentry *dentry, struct super_block *sb)
{
struct inode *inode = ecryptfs_get_inode(lower_dentry->d_inode, sb);
if (IS_ERR(inode))
return PTR_ERR(inode);
d_instantiate(dentry, inode);
if(d_unhashed(dentry))
d_rehash(dentry);
#ifdef CONFIG_SDP
if(S_ISDIR(inode->i_mode) && dentry) {
if(IS_UNDER_ROOT(dentry)) {
struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
&ecryptfs_superblock_to_private(inode->i_sb)->mount_crypt_stat;
int engineid;
printk("Creating a directoy under root directory of current partition.\n");
if(is_chamber_directory(mount_crypt_stat, dentry->d_name.name, &engineid)) {
printk("This is a chamber directory engine[%d]\n", engineid);
set_chamber_flag(engineid, inode);
}
} else if(IS_SENSITIVE_DENTRY(dentry->d_parent)) {
/*
* When parent directory is sensitive
*/
struct ecryptfs_crypt_stat *crypt_stat =
&ecryptfs_inode_to_private(inode)->crypt_stat;
struct ecryptfs_crypt_stat *parent_crypt_stat =
&ecryptfs_inode_to_private(dentry->d_parent->d_inode)->crypt_stat;
//TODO : remove this log
DEK_LOGE("Parent %s[id:%d] is sensitive. so this directory is sensitive too\n",
dentry->d_parent->d_name.name, parent_crypt_stat->engine_id);
crypt_stat->flags |= ECRYPTFS_DEK_IS_SENSITIVE;
crypt_stat->engine_id = parent_crypt_stat->engine_id;
}
}
#endif
return 0;
}
/**
* ecryptfs_interpose
* @lower_dentry: Existing dentry in the lower filesystem
* @dentry: ecryptfs' dentry
* @sb: ecryptfs's super_block
*
* Interposes upper and lower dentries.
*
* Returns zero on success; non-zero otherwise
*/
static int ecryptfs_interpose(struct dentry *lower_dentry,
struct dentry *dentry, struct super_block *sb)
{
struct inode *inode = ecryptfs_get_inode(lower_dentry->d_inode, sb);
if (IS_ERR(inode))
return PTR_ERR(inode);
d_instantiate(dentry, inode);
#ifdef CONFIG_SDP
if(S_ISDIR(inode->i_mode) && dentry) {
if(IS_UNDER_ROOT(dentry)) {
struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
&ecryptfs_superblock_to_private(inode->i_sb)->mount_crypt_stat;
printk("Creating a directoy under root directory of current partition.\n");
if(is_chamber_directory(mount_crypt_stat, (char *)dentry->d_name.name)) {
printk("This is a chamber directory\n");
set_chamber_flag(inode);
}
} else if(IS_SENSITIVE_DENTRY(dentry->d_parent)) {
/*
* When parent directory is sensitive
*/
struct ecryptfs_crypt_stat *crypt_stat =
&ecryptfs_inode_to_private(inode)->crypt_stat;
printk("Parent %s is sensitive. so this directory is sensitive too\n",
dentry->d_parent->d_name.name);
crypt_stat->flags |= ECRYPTFS_DEK_IS_SENSITIVE;
}
}
#endif
return 0;
}