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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-04-22 06:39:58 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-29 01:41:51 +0300 |
| commit | fcc85a4d86b5018f08717160c89c0eb50afd1dca (patch) | |
| tree | 2f99ba2bc5ccf0ba32c6703a7a04d0731254b3af /fs/f2fs/data.c | |
| parent | 6b3bd08f93a849edd56595391a54100d607ad7e4 (diff) | |
| download | linux-fcc85a4d86b5018f08717160c89c0eb50afd1dca.tar.xz | |
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/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 842fcdd9d226..473b4d41c0c8 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1982,6 +1982,9 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, return err; } + if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) + return 0; + if (check_direct_IO(inode, iter, offset)) return 0; |