static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int rc;
#ifdef CONFIG_SDP
if(IS_CHAMBER_DENTRY(dentry)) {
printk("You're removing chamber directory. I/O error\n");
return -EIO;
}
#endif
lower_dentry = ecryptfs_dentry_to_lower(dentry);
dget(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
dget(lower_dentry);
rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
dput(lower_dentry);
if (!rc && dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
unlock_dir(lower_dir_dentry);
if (!rc)
d_drop(dentry);
dput(dentry);
return rc;
}
static int
ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
int rc;
struct dentry *lower_old_dentry;
struct dentry *lower_new_dentry;
struct dentry *lower_old_dir_dentry;
struct dentry *lower_new_dir_dentry;
struct dentry *trap = NULL;
struct inode *target_inode;
#ifdef CONFIG_SDP
if(IS_CHAMBER_DENTRY(old_dentry)) {
printk("You're renaming chamber directory. I/O error\n");
return -EIO;
}
#endif
lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
dget(lower_old_dentry);
dget(lower_new_dentry);
lower_old_dir_dentry = dget_parent(lower_old_dentry);
lower_new_dir_dentry = dget_parent(lower_new_dentry);
target_inode = new_dentry->d_inode;
trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
/* source should not be ancestor of target */
if (trap == lower_old_dentry) {
rc = -EINVAL;
goto out_lock;
}
/* target should not be ancestor of source */
if (trap == lower_new_dentry) {
rc = -ENOTEMPTY;
goto out_lock;
}
rc = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
lower_new_dir_dentry->d_inode, lower_new_dentry);
if (rc)
goto out_lock;
if (target_inode)
fsstack_copy_attr_all(target_inode,
ecryptfs_inode_to_lower(target_inode));
fsstack_copy_attr_all(new_dir, lower_new_dir_dentry->d_inode);
if (new_dir != old_dir)
fsstack_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode);
out_lock:
unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
dput(lower_new_dir_dentry);
dput(lower_old_dir_dentry);
dput(lower_new_dentry);
dput(lower_old_dentry);
return rc;
}
static int
ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
int rc;
struct dentry *lower_old_dentry;
struct dentry *lower_new_dentry;
struct dentry *lower_old_dir_dentry;
struct dentry *lower_new_dir_dentry;
struct dentry *trap = NULL;
struct inode *target_inode;
#ifdef CONFIG_DLP
sdp_fs_command_t *cmd1 = NULL;
unsigned long old_inode = old_dentry->d_inode->i_ino;
#endif
#ifdef CONFIG_SDP
sdp_fs_command_t *cmd = NULL;
int rename_event = 0x00;
struct ecryptfs_crypt_stat *crypt_stat =
&(ecryptfs_inode_to_private(old_dentry->d_inode)->crypt_stat);
struct ecryptfs_crypt_stat *parent_crypt_stat =
&(ecryptfs_inode_to_private(old_dentry->d_parent->d_inode)->crypt_stat);
struct ecryptfs_crypt_stat *new_parent_crypt_stat =
&(ecryptfs_inode_to_private(new_dentry->d_parent->d_inode)->crypt_stat);
struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
&ecryptfs_superblock_to_private(old_dentry->d_sb)->mount_crypt_stat;
#if ECRYPTFS_SDP_RENAME_DEBUG
printk("You're renaming %s to %s\n",
old_dentry->d_name.name,
new_dentry->d_name.name);
printk("old_dentry[%p] : %s [parent %s : %s] inode:%p\n",
old_dentry, old_dentry->d_name.name,
old_dentry->d_parent->d_name.name,
IS_SENSITIVE_DENTRY(old_dentry->d_parent) ? "sensitive" : "protected",
old_dentry->d_inode);
printk("new_dentry[%p] : %s [parent %s : %s] inode:%p\n",
new_dentry, new_dentry->d_name.name,
new_dentry->d_parent->d_name.name,
IS_SENSITIVE_DENTRY(new_dentry->d_parent) ? "sensitive" : "protected",
new_dentry->d_inode);
#endif
if(IS_CHAMBER_DENTRY(old_dentry)) {
printk("Rename trial on chamber : failed\n");
return -EIO;
}
#if 0 // kernel panic. new_crypt_stat->engine_id
if(IS_SENSITIVE_DENTRY(old_dentry->d_parent) &&
IS_SENSITIVE_DENTRY(new_dentry->d_parent)) {
if(crypt_stat->engine_id != new_crypt_stat->engine_id) {
printk("Rename chamber file to another chamber : failed\n");
return -EIO;
}
}
#endif
if(IS_SENSITIVE_DENTRY(old_dentry->d_parent)) {
if(ecryptfs_is_sdp_locked(parent_crypt_stat->engine_id)) {
printk("Rename/move trial in locked state\n");
return -EIO;
}
}
if(IS_SENSITIVE_DENTRY(old_dentry->d_parent) &&
IS_SENSITIVE_DENTRY(new_dentry->d_parent)) {
if(parent_crypt_stat->engine_id != new_parent_crypt_stat->engine_id) {
printk("Can't move between chambers\n");
return -EIO;
}
}
if(IS_SENSITIVE_DENTRY(old_dentry->d_parent) &&
!IS_SENSITIVE_DENTRY(new_dentry->d_parent))
rename_event |= ECRYPTFS_EVT_RENAME_OUT_OF_CHAMBER;
if(!IS_SENSITIVE_DENTRY(old_dentry->d_parent) &&
IS_SENSITIVE_DENTRY(new_dentry->d_parent))
rename_event |= ECRYPTFS_EVT_RENAME_TO_CHAMBER;
#endif
lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
dget(lower_old_dentry);
dget(lower_new_dentry);
lower_old_dir_dentry = dget_parent(lower_old_dentry);
lower_new_dir_dentry = dget_parent(lower_new_dentry);
target_inode = new_dentry->d_inode;
trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
/* source should not be ancestor of target */
if (trap == lower_old_dentry) {
rc = -EINVAL;
goto out_lock;
}
/* target should not be ancestor of source */
if (trap == lower_new_dentry) {
rc = -ENOTEMPTY;
goto out_lock;
}
rc = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
lower_new_dir_dentry->d_inode, lower_new_dentry);
if (rc)
goto out_lock;
if (target_inode)
fsstack_copy_attr_all(target_inode,
ecryptfs_inode_to_lower(target_inode));
fsstack_copy_attr_all(new_dir, lower_new_dir_dentry->d_inode);
if (new_dir != old_dir)
fsstack_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode);
#ifdef CONFIG_SDP
if(!rc) {
crypt_stat = &(ecryptfs_inode_to_private(old_dentry->d_inode)->crypt_stat);
if(rename_event > 0) {
switch(rename_event) {
case ECRYPTFS_EVT_RENAME_TO_CHAMBER:
cmd = sdp_fs_command_alloc(FSOP_SDP_SET_SENSITIVE, current->pid,
mount_crypt_stat->userid, mount_crypt_stat->partition_id,
old_dentry->d_inode->i_ino,
GFP_NOFS);
break;
case ECRYPTFS_EVT_RENAME_OUT_OF_CHAMBER:
cmd = sdp_fs_command_alloc(FSOP_SDP_SET_PROTECTED, current->pid,
mount_crypt_stat->userid, mount_crypt_stat->partition_id,
old_dentry->d_inode->i_ino,
GFP_NOFS);
break;
default:
cmd = NULL;
break;
}
}
#if ECRYPTFS_SDP_RENAME_DEBUG
printk("[end of rename] old_dentry[%p] : %s [parent %s : %s] inode:%p\n",
old_dentry, old_dentry->d_name.name,
old_dentry->d_parent->d_name.name,
IS_SENSITIVE_DENTRY(old_dentry->d_parent) ? "sensitive" : "protected",
old_dentry->d_inode);
printk("[end of rename] new_dentry[%p] : %s [parent %s : %s] inode:%p\n",
new_dentry, new_dentry->d_name.name,
new_dentry->d_parent->d_name.name,
IS_SENSITIVE_DENTRY(new_dentry->d_parent) ? "sensitive" : "protected",
new_dentry->d_inode);
#endif
}
#endif
out_lock:
unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
dput(lower_new_dir_dentry);
dput(lower_old_dir_dentry);
dput(lower_new_dentry);
dput(lower_old_dentry);
#ifdef CONFIG_SDP
if(!rc && cmd != NULL) {
sdp_fs_request(cmd, ecryptfs_fs_request_callback);
sdp_fs_command_free(cmd);
}
#endif
#ifdef CONFIG_DLP
//create new init command and send--Handle transient case MS-Apps
if(crypt_stat->flags & ECRYPTFS_DLP_ENABLED) {
if(!rc && (in_egroup_p(AID_KNOX_DLP) || in_egroup_p(AID_KNOX_DLP_RESTRICTED))){
cmd1 = sdp_fs_command_alloc(FSOP_DLP_FILE_RENAME,
current->tgid, mount_crypt_stat->userid, mount_crypt_stat->partition_id,
old_inode, GFP_KERNEL);
//send cmd
if(cmd1) {
sdp_fs_request(cmd1, NULL);
sdp_fs_command_free(cmd1);
}
}
}
//end- Handle transient case MS-Apps
#endif
return rc;
}