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/*
* $Id: asp_write.c,v 1.4 2009-10-22 12:35:39 franklahm Exp $
*
* Copyright (c) 1990,1991 Regents of The University of Michigan.
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation, and that the name of The University
* of Michigan not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. This software is supplied as is without expressed or
* implied warranties of any kind.
*
* Research Systems Unix Group
* The University of Michigan
* c/o Mike Clark
* 535 W. William Street
* Ann Arbor, Michigan
* +1-313-763-0525
* netatalk@itd.umich.edu
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include <string.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <netatalk/endian.h>
#include <netatalk/at.h>
#include <atalk/atp.h>
#include <atalk/asp.h>
#if defined(BSD) || defined(BSD4_3)
#define memmove(a, b, n) bcopy((b), (a), (n))
#endif /* BSD || BSD4_3 */
int asp_wrtcont(ASP asp, char *buf, size_t *buflen)
{
struct iovec iov[ ASP_MAXPACKETS ];
struct atp_block atpb;
char *p;
int iovcnt = ASP_MAXPACKETS;
u_int16_t blen, seq;
u_int8_t oport;
p = buf;
*p++ = ASPFUNC_WRTCONT;
*p++ = asp->asp_sid;
seq = htons( asp->asp_seq );
memcpy( p, &seq, sizeof(seq));
p += sizeof(seq);
blen = htons(*buflen);
memcpy( p, &blen, sizeof(blen));
p += sizeof(blen);
for ( iovcnt = 0; iovcnt < ASP_MAXPACKETS; iovcnt++ ) {
iov[iovcnt].iov_base = buf + iovcnt*ASP_CMDMAXSIZ;
iov[ iovcnt ].iov_len = ASP_CMDMAXSIZ;
}
oport = asp->asp_sat.sat_port;
atpb.atp_saddr = &asp->asp_sat;
atpb.atp_saddr->sat_port = asp->asp_wss;
atpb.atp_sreqdata = buf;
atpb.atp_sreqdlen = p - buf;
atpb.atp_sreqto = 2;
atpb.atp_sreqtries = 5;
if ( atp_sreq( asp->asp_atp, &atpb, iovcnt, ATP_XO ) < 0 ) {
asp->asp_sat.sat_port = oport;
return( -1 );
}
asp->write_count += atpb.atp_sreqdlen;
atpb.atp_rresiov = iov;
atpb.atp_rresiovcnt = iovcnt;
if ( atp_rresp( asp->asp_atp, &atpb ) < 0 ) {
asp->asp_sat.sat_port = oport;
return( -1 );
}
asp->asp_sat.sat_port = oport;
/* get rid of the 4-byte headers */
p = buf;
for ( iovcnt = 0; iovcnt < atpb.atp_rresiovcnt; iovcnt++ ) {
memmove(p, (char *) iov[ iovcnt ].iov_base + ASP_HDRSIZ,
iov[ iovcnt ].iov_len - ASP_HDRSIZ );
p += ( iov[ iovcnt ].iov_len - ASP_HDRSIZ );
}
*buflen = p - buf;
asp->read_count += *buflen;
return 0;
}
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