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f2fs crypto: allow setting encryption policy once

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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: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2015-05-25 18:09:03 +08:00 committed by Jaegeuk Kim
parent d3baf7c472
commit 81b0a8ffaa
1 changed files with 2 additions and 2 deletions
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4
fs/f2fs/crypto_policy.c
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@ -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);
}