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authorEric Biggers <ebiggers@google.com>2019-05-20 09:29:47 -0700
committerEric Biggers <ebiggers@google.com>2019-05-28 10:27:53 -0700
commitaa8bc1ac6ef32a332671ca25e06cfd277a3839a5 (patch)
tree40a7109717078adacb8bed18199f35fb706f36f3 /include
parent41adbcb7267b0060682576d523956160b5c617bd (diff)
fscrypt: support decrypting multiple filesystem blocks per page
Rename fscrypt_decrypt_page() to fscrypt_decrypt_pagecache_blocks() and redefine its behavior to decrypt all filesystem blocks in the given region of the given page, rather than assuming that the region consists of just one filesystem block. Also remove the 'inode' and 'lblk_num' parameters, since they can be retrieved from the page as it's already assumed to be a pagecache page. This is in preparation for allowing encryption on ext4 filesystems with blocksize != PAGE_SIZE. This is based on work by Chandan Rajendra. Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com> Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fscrypt.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index 315affc99b05..bd8f207a2fb6 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -112,8 +112,9 @@ extern int fscrypt_encrypt_block_inplace(const struct inode *inode,
struct page *page, unsigned int len,
unsigned int offs, u64 lblk_num,
gfp_t gfp_flags);
-extern int fscrypt_decrypt_page(const struct inode *, struct page *, unsigned int,
- unsigned int, u64);
+
+extern int fscrypt_decrypt_pagecache_blocks(struct page *page, unsigned int len,
+ unsigned int offs);
extern int fscrypt_decrypt_block_inplace(const struct inode *inode,
struct page *page, unsigned int len,
unsigned int offs, u64 lblk_num);
@@ -310,10 +311,9 @@ static inline int fscrypt_encrypt_block_inplace(const struct inode *inode,
return -EOPNOTSUPP;
}
-static inline int fscrypt_decrypt_page(const struct inode *inode,
- struct page *page,
- unsigned int len, unsigned int offs,
- u64 lblk_num)
+static inline int fscrypt_decrypt_pagecache_blocks(struct page *page,
+ unsigned int len,
+ unsigned int offs)
{
return -EOPNOTSUPP;
}