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Commit 81b0a8ff authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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f2fs crypto: allow setting encryption policy once 



This patch add XATTR_CREATE flag in setxattr when setting encryption
context for inode. Without this flag the context could be set more than
once, this should never happen. So, fix it.

Signed-off-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent d3baf7c4

fs/f2fs/crypto_policy.c

+2 −2
Original line number Diff line number Diff line
@@ -83,7 +83,7 @@ static int f2fs_create_encryption_context_from_policy( 


	return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,

			F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, &ctx,

			sizeof(ctx), NULL, 0);

			sizeof(ctx), NULL, XATTR_CREATE);

}



int f2fs_process_policy(const struct f2fs_encryption_policy *policy,
@@ -202,5 +202,5 @@ int f2fs_inherit_context(struct inode *parent, struct inode *child, 
	get_random_bytes(ctx.nonce, F2FS_KEY_DERIVATION_NONCE_SIZE);

	return f2fs_setxattr(child, F2FS_XATTR_INDEX_ENCRYPTION,

				F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, &ctx,

				sizeof(ctx), ipage, 0);

				sizeof(ctx), ipage, XATTR_CREATE);

}