user/sven/linux.git/include/linux/sunrpc/xdr.h, branch stable/4.2.y

rpc: define xdr_restrict_buflen

2014-05-30T21:32:01Z

With this xdr_reserve_space can help us enforce various limits. Signed-off-by: J. Bruce Fields

nfsd4: allow encoding across page boundaries

2014-05-30T21:31:54Z

After this we can handle for example getattr of very large ACLs. Read, readdir, readlink are still special cases with their own limits. Also we can't handle a new operation starting close to the end of a page. Signed-off-by: J. Bruce Fields

rpc: xdr_truncate_encode

2014-05-30T21:31:47Z

This will be used in the server side in a few cases: - when certain operations (read, readdir, readlink) fail after encoding a partial response. - when we run out of space after encoding a partial response. - in readlink, where we initially reserve PAGE_SIZE bytes for data, then truncate to the actual size. Signed-off-by: J. Bruce Fields

sunrpc: trim off trailing checksum before returning decrypted or integrity authenticated buffer

2013-02-08T20:19:10Z

When GSSAPI integrity signatures are in use, or when we're using GSSAPI privacy with the v2 token format, there is a trailing checksum on the xdr_buf that is returned. It's checked during the authentication stage, and afterward nothing cares about it. Ordinarily, it's not a problem since the XDR code generally ignores it, but it will be when we try to compute a checksum over the buffer to help prevent XID collisions in the duplicate reply cache. Fix the code to trim off the checksums after verifying them. Note that in unwrap_integ_data, we must avoid trying to reverify the checksum if the request was deferred since it will no longer be present when it's revisited. Signed-off-by: Jeff Layton

sunrpc: fix comment in struct xdr_buf definition

2013-02-05T14:41:14Z

...these pages aren't necessarily contiguous. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields

SUNRPC: Remove unused function xdr_encode_pages

2012-06-28T21:20:49Z

Signed-off-by: Trond Myklebust

SUNRPC: Add the helper xdr_stream_pos

2012-06-28T21:20:44Z

Add a helper to report the current offset from the start of the xdr_stream. Signed-off-by: Trond Myklebust

SUNRPC: xdr_read_pages should return the amount of XDR encoded page data

2012-06-28T21:20:43Z

Callers of xdr_read_pages() will want to know exactly how much XDR data is encoded in the pages after the data realignment. Signed-off-by: Trond Myklebust

SUNRPC: Don't decode beyond the end of the RPC reply message

2012-06-28T21:20:41Z

Now that xdr_inline_decode() will automatically cross into the page buffers, we need to ensure that it doesn't exceed the total reply message length. This patch sets up a counter that tracks the number of words remaining in the reply message, and ensures that xdr_inline_decode, xdr_read_pages and xdr_enter_page respect the end of message boundary. Signed-off-by: Trond Myklebust

NFSv4: include bitmap in nfsv4 get acl data

2012-01-05T15:42:42Z

The NFSv4 bitmap size is unbounded: a server can return an arbitrary sized bitmap in an FATTR4_WORD0_ACL request. Replace using the nfs4_fattr_bitmap_maxsz as a guess to the maximum bitmask returned by a server with the inclusion of the bitmap (xdr length plus bitmasks) and the acl data xdr length to the (cached) acl page data. This is a general solution to commit e5012d1f "NFSv4.1: update nfs4_fattr_bitmap_maxsz" and fixes hitting a BUG_ON in xdr_shrink_bufhead when getting ACLs. Fix a bug in decode_getacl that returned -EINVAL on ACLs > page when getxattr was called with a NULL buffer, preventing ACL > PAGE_SIZE from being retrieved. Cc: stable@kernel.org Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust