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/*
Copyright (c) 2007-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include "xdr-generic.h"
ssize_t
xdr_serialize_generic(struct iovec outmsg, void *res, xdrproc_t proc)
{
ssize_t ret = -1;
XDR xdr;
if ((!outmsg.iov_base) || (!res) || (!proc))
return -1;
xdrmem_create(&xdr, outmsg.iov_base, (unsigned int)outmsg.iov_len,
XDR_ENCODE);
if (!PROC(&xdr, res)) {
ret = -1;
goto ret;
}
ret = xdr_encoded_length(xdr);
ret:
return ret;
}
ssize_t
xdr_to_generic(struct iovec inmsg, void *args, xdrproc_t proc)
{
XDR xdr;
ssize_t ret = -1;
if ((!inmsg.iov_base) || (!args) || (!proc))
return -1;
xdrmem_create(&xdr, inmsg.iov_base, (unsigned int)inmsg.iov_len,
XDR_DECODE);
if (!PROC(&xdr, args)) {
ret = -1;
goto ret;
}
ret = xdr_decoded_length(xdr);
ret:
return ret;
}
ssize_t
xdr_to_generic_payload(struct iovec inmsg, void *args, xdrproc_t proc,
struct iovec *pendingpayload)
{
XDR xdr;
ssize_t ret = -1;
if ((!inmsg.iov_base) || (!args) || (!proc))
return -1;
xdrmem_create(&xdr, inmsg.iov_base, (unsigned int)inmsg.iov_len,
XDR_DECODE);
if (!PROC(&xdr, args)) {
ret = -1;
goto ret;
}
ret = xdr_decoded_length(xdr);
if (pendingpayload) {
pendingpayload->iov_base = xdr_decoded_remaining_addr(xdr);
pendingpayload->iov_len = xdr_decoded_remaining_len(xdr);
}
ret:
return ret;
}
ssize_t
xdr_length_round_up(size_t len, size_t bufsize)
{
int roundup = 0;
roundup = len % XDR_BYTES_PER_UNIT;
if (roundup > 0)
roundup = XDR_BYTES_PER_UNIT - roundup;
if ((roundup > 0) && ((roundup + len) <= bufsize))
len += roundup;
return len;
}
int
xdr_bytes_round_up(struct iovec *vec, size_t bufsize)
{
vec->iov_len = xdr_length_round_up(vec->iov_len, bufsize);
return 0;
}
void
xdr_vector_round_up(struct iovec *vec, int vcount, uint32_t count)
{
uint32_t round_count = 0;
round_count = xdr_length_round_up(count, 1048576);
round_count -= count;
if (round_count == 0 || vcount <= 0)
return;
vec[vcount - 1].iov_len += round_count;
}
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