kernel/linux.git/include/linux/sunrpc/xdr.h, branch v4.4.293

SUNRPC: Move simple_get_bytes and simple_get_netobj into private header

2021-02-23T12:58:12+00:00

[ Upstream commit ba6dfce47c4d002d96cd02a304132fca76981172 ] Remove duplicated helper functions to parse opaque XDR objects and place inside new file net/sunrpc/auth_gss/auth_gss_internal.h. In the new file carry the license and copyright from the source file net/sunrpc/auth_gss/auth_gss.c. Finally, update the comment inside include/linux/sunrpc/xdr.h since lockd is not the only user of struct xdr_netobj. Signed-off-by: Dave Wysochanski Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin

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

sunrpc: fix comment in struct xdr_buf definition

2013-02-05T14:41:14+00:00

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

SUNRPC: Remove unused function xdr_encode_pages

2012-06-28T21:20:49+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Add the helper xdr_stream_pos

2012-06-28T21:20:44+00:00

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

2012-06-28T21:20:43+00:00

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

2012-06-28T21:20:41+00:00

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