f2fs crypto: add encryption policy and password salt support

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This patch adds encryption policy and password salt support through ioctl
implementation.

It adds three ioctls:
 F2FS_IOC_SET_ENCRYPTION_POLICY,
 F2FS_IOC_GET_ENCRYPTION_POLICY,
 F2FS_IOC_GET_ENCRYPTION_PWSALT, which use xattr operations.

Note that, these definition and codes are taken from ext4 crypto support.
For f2fs, xattr operations and on-disk flags for superblock and inode were
changed.

Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Ildar Muslukhov <muslukhovi@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

...

This commit is contained in:

Jaegeuk Kim 2015-04-20 15:19:06 -07:00

parent b93531dd7b

commit f424f664f0

5 changed files with 319 additions and 0 deletions

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1

fs/f2fs/Makefile

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206

fs/f2fs/crypto_policy.c

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16

fs/f2fs/f2fs.h

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93

fs/f2fs/file.c

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3

fs/f2fs/xattr.c

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