diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-04-21 20:39:58 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-28 15:41:51 -0700 |
| commit | fcc85a4d86b5018f08717160c89c0eb50afd1dca (patch) | |
| tree | 2f99ba2bc5ccf0ba32c6703a7a04d0731254b3af /fs/f2fs/dir.c | |
| parent | 6b3bd08f93a849edd56595391a54100d607ad7e4 (diff) | |
| download | linux-fcc85a4d86b5018f08717160c89c0eb50afd1dca.tar.bz2 | |
f2fs crypto: activate encryption support for fs APIs
This patch activates the following APIs for encryption support.
The rules quoted by ext4 are:
- An unencrypted directory may contain encrypted or unencrypted files
or directories.
- All files or directories in a directory must be protected using the
same key as their containing directory.
- Encrypted inode for regular file should not have inline_data.
- Encrypted symlink and directory may have inline_data and inline_dentry.
This patch activates the following APIs.
1. f2fs_link : validate context
2. f2fs_lookup : ''
3. f2fs_rename : ''
4. f2fs_create/f2fs_mkdir : inherit its dir's context
5. f2fs_direct_IO : do buffered io for regular files
6. f2fs_open : check encryption info
7. f2fs_file_mmap : ''
8. f2fs_setattr : ''
9. f2fs_file_write_iter : '' (Called by sys_io_submit)
10. f2fs_fallocate : do not support fcollapse
11. f2fs_evict_inode : free_encryption_info
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/dir.c')
| -rw-r--r-- | fs/f2fs/dir.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 9d558d24e1c4..f7293a2674b2 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -390,6 +390,12 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir, err = f2fs_init_security(inode, dir, name, page); if (err) goto put_error; + + if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode)) { + err = f2fs_inherit_context(dir, inode, page); + if (err) + goto put_error; + } } else { page = get_node_page(F2FS_I_SB(dir), inode->i_ino); if (IS_ERR(page)) |