xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

f2fs crypto: add filename encryption for roll-forward recovery

Browse Source 
This patch adds a bit flag to indicate whether or not i_name in the inode
is encrypted.

If this name is encrypted, we can't do recover_dentry during roll-forward.
So, f2fs_sync_file() needs to do checkpoint, if this will be needed in future.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2015-04-29 17:02:18 -07:00
parent 6e22c691ba
commit e7d5545285
5 changed files with 41 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
fs/f2fs/recovery.c
View File

@@ -83,6 +83,11 @@ static int recover_dentry(struct inode *inode, struct page *ipage)
goto out;
}
if (file_enc_name(inode)) {
iput(dir);
return 0;
}
name.len = le32_to_cpu(raw_inode->i_namelen);
name.name = raw_inode->i_name;
@@ -143,6 +148,7 @@ out:
static void recover_inode(struct inode *inode, struct page *page)
{
struct f2fs_inode *raw = F2FS_INODE(page);
char *name;
inode->i_mode = le16_to_cpu(raw->i_mode);
i_size_write(inode, le64_to_cpu(raw->i_size));
@@ -153,8 +159,13 @@ static void recover_inode(struct inode *inode, struct page *page)
inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec);
inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec);
if (file_enc_name(inode))
name = "<encrypted>";
else
name = F2FS_INODE(page)->i_name;
f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s",
ino_of_node(page), F2FS_INODE(page)->i_name);
ino_of_node(page), name);
}
static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head)