linux.git/include/linux/sunrpc/xdr.h, branch v4.13-rc2

sunrpc: remove kxdrproc_t

2017-05-15T15:42:26+00:00

Remove the now unused typedef.

Signed-off-by: Christoph Hellwig

sunrpc: properly type argument to kxdrdproc_t

2017-05-15T15:42:12+00:00

Pass struct rpc_request as the first argument instead of an untyped blob.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jeff Layton 
Acked-by: Trond Myklebust

sunrpc: properly type argument to kxdreproc_t

2017-05-15T15:42:07+00:00

Pass struct rpc_request as the first argument instead of an untyped blob,
and mark the data object as const.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jeff Layton

SUNRPC: Add a helper function xdr_stream_decode_string_dup()

2017-02-21T21:56:16+00:00

Create a helper function that decodes a xdr string object, allocates a memory
buffer and then store it as a NUL terminated string.

Signed-off-by: Trond Myklebust 
Reviewed-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Add generic helpers for xdr_stream encode/decode

2017-02-21T21:56:16+00:00

Add some generic helpers for encoding/decoding opaque structures and
basic u32/u64.

Signed-off-by: Trond Myklebust 
Reviewed-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Refactor rpc_xdr_buf_init()

2016-09-19T17:08:37+00:00

Clean up: there is some XDR initialization logic that is common
to the forward channel and backchannel. Move it to an XDR header
so it can be shared.

rpc_rqst::rq_buffer points to a buffer containing big-endian data.
Update its annotation as part of the clean up.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

rpc: define xdr_restrict_buflen

2014-05-30T21:32:01+00:00

With this xdr_reserve_space can help us enforce various limits.

Signed-off-by: J. Bruce Fields

nfsd4: allow encoding across page boundaries

2014-05-30T21:31:54+00:00

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

2014-05-30T21:31:47+00:00

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

2013-02-08T20:19:10+00:00

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