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/*
* $Id: write.c,v 1.1 2005/03/31 13:13:04 baud Exp $
*/
/*
* Copyright (C) 1990-2002 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: write.c,v $ $Revision: 1.1 $ $Date: 2005/03/31 13:13:04 $ CERN/IT/PDP/DM F. Hemmer, A. Trannoy, F. Hassine";
#endif /* not lint */
/* write.c Remote File I/O - write a file */
/*
* System remote file I/O definitions
*/
#define RFIO_KERNEL 1
#include "rfio.h"
#include "rfio_rfilefdt.h"
#include <stdlib.h> /* malloc prototype */
/*
* Remote file write
*/
int DLL_DECL rfio_write(s, ptr, size)
void *ptr;
int s, size;
{
int s_index;
/* Remote file ? */
if ((s_index = rfio_rfilefdt_findentry(s,FINDRFILE_WITHOUT_SCAN)) != -1)
{
if (rfilefdt[s_index]->version3 == 1)
{
/* New V3 stream protocol for sequential transfers */
return(rfio_write_v3(s,(char *)ptr,size));
}
else
return(rfio_write_v2(s,(char *)ptr,size));
}
else
return(rfio_write_v2(s,(char *)ptr,size));
}
int rfio_write_v2(s, ptr, size)
char *ptr;
int s, size;
{
int status ; /* Return code of called func */
int HsmType, save_errno, written_to;
char * p ; /* Pointer to buffer */
char * trp ; /* Pointer to a temp buffer */
int temp=0 ; /* Has it been allocated ? */
char rfio_buf[BUFSIZ];
int s_index;
INIT_TRACE("RFIO_TRACE");
TRACE(1, "rfio", "rfio_write(%d, %x, %d)", s, ptr, size) ;
#if defined (CLIENTLOG)
/* Client logging */
rfio_logwr(s,size);
#endif
/*
* Check HSM type and if file has been written to. The CASTOR HSM
* uses normal RFIO (local or remote) to perform the I/O. Thus we
* don't call rfio_HsmIf_write().
*/
HsmType = rfio_HsmIf_GetHsmType(s,&written_to);
if ( HsmType > 0 ) {
if ( written_to == 0 && (status = rfio_HsmIf_FirstWrite(s,ptr,size)) < 0) {
END_TRACE();
return(status);
}
if ( HsmType != RFIO_HSM_CNS ) {
status = rfio_HsmIf_write(s,ptr,size);
if ( status == -1 ) rfio_HsmIf_IOError(s,errno);
END_TRACE();
return(status);
}
}
/*
* The file is local.
*/
if ((s_index = rfio_rfilefdt_findentry(s,FINDRFILE_WITHOUT_SCAN)) == -1) {
TRACE(2, "rfio", "rfio_write: using local write(%d, %x, %d)", s, ptr, size);
status = write(s, ptr, size);
if ( status < 0 ) serrno = 0;
if ( HsmType == RFIO_HSM_CNS ) {
save_errno = errno;
rfio_HsmIf_IOError(s,errno);
errno = save_errno;
}
END_TRACE();
rfio_errno = 0;
return(status);
}
/*
* Checking magic number.
*/
if (rfilefdt[s_index]->magic != RFIO_MAGIC) {
serrno = SEBADVERSION ;
rfio_rfilefdt_freeentry(s_index);
(void) close(s) ;
END_TRACE();
return(-1);
}
/*
* Checking mode 64.
*/
if (rfilefdt[s_index]->mode64) {
status = rfio_write64_v2(s, ptr, size);
END_TRACE();
return(status);
}
/*
* Repositionning file mark if needed.
*/
if ( (rfilefdt[s_index]->readissued || rfilefdt[s_index]->preseek) && rfilefdt[s_index]->lseekhow == -1 ) {
rfilefdt[s_index]->lseekhow= SEEK_SET ;
rfilefdt[s_index]->lseekoff= rfilefdt[s_index]->offset ;
}
/*
* Resetting flags
*/
rfilefdt[s_index]->eof= 0 ;
rfilefdt[s_index]->preseek= 0 ;
rfilefdt[s_index]->nbrecord= 0 ;
rfilefdt[s_index]->readissued= 0 ;
if ( rfilefdt[s_index]->_iobuf.base ) {
rfilefdt[s_index]->_iobuf.count= 0 ;
rfilefdt[s_index]->_iobuf.ptr= iodata(rfilefdt[s_index]) ;
}
/*
* Sending request.
*/
p= rfio_buf ;
marshall_WORD(p, RFIO_MAGIC);
marshall_WORD(p, RQST_WRITE);
marshall_LONG(p, size);
marshall_LONG(p, rfilefdt[s_index]->lseekhow) ;
marshall_LONG(p, rfilefdt[s_index]->lseekoff) ;
rfilefdt[s_index]->lseekhow= -1 ;
TRACE(2, "rfio", "rfio_write: sending %d bytes",RQSTSIZE) ;
if (netwrite_timeout(s, rfio_buf, RQSTSIZE, RFIO_CTRL_TIMEOUT) != RQSTSIZE) {
TRACE(2,"rfio","rfio_write: write(): ERROR occured (errno=%d)",errno) ;
END_TRACE() ;
return -1 ;
}
if (rfilefdt[s_index]->bufsize < size) {
rfilefdt[s_index]->bufsize = size ;
TRACE(2, "rfio", "rfio_write: setsockopt(SOL_SOCKET, SO_SNDBUF): %d", rfilefdt[s_index]->bufsize) ;
if (setsockopt(s,SOL_SOCKET,SO_SNDBUF,(char *)&(rfilefdt[s_index]->bufsize),sizeof((rfilefdt[s_index]->bufsize))) == -1) {
TRACE(2, "rfio" ,"rfio_write: setsockopt(SO_SNDBUF)") ;
}
}
TRACE(2,"rfio","rfio_write: sending %d bytes",size) ;
if (netwrite_timeout(s, ptr, size, RFIO_DATA_TIMEOUT) != size) {
TRACE(2,"rfio","rfio_write: write(): ERROR occured (errno=%d)",errno) ;
END_TRACE() ;
return -1 ;
}
/*
* Getting request answer.
*/
for(;;) {
WORD req ;
LONG rcode ;
LONG msgsiz ;
TRACE(2, "rfio", "rfio_write: reading %d bytes",rfilefdt[s_index]->_iobuf.hsize) ;
if (netread_timeout(s,rfio_buf,rfilefdt[s_index]->_iobuf.hsize,RFIO_CTRL_TIMEOUT) != rfilefdt[s_index]->_iobuf.hsize) {
TRACE(2, "rfio", "rfio_write: read(): ERROR occured (errno=%d)", errno);
if ( temp ) (void) free(trp) ;
END_TRACE() ;
return -1 ;
}
p = rfio_buf ;
unmarshall_WORD(p,req) ;
unmarshall_LONG(p,status) ;
unmarshall_LONG(p,rcode) ;
unmarshall_LONG(p,msgsiz) ;
switch(req) {
case RQST_WRITE:
rfio_errno = rcode;
if ( status < 0 ) rfio_HsmIf_IOError(s,rfio_errno);
if ( status < 0 && rcode == 0 )
serrno = SENORCODE ;
if (status > 0 && rfilefdt[s_index]->offset + status < 0) {
status = -1;
serrno = EFBIG;
}
rfilefdt[s_index]->offset += status ;
TRACE(1,"rfio","rfio_write: status %d, rcode %d",status,rcode) ;
if ( temp ) (void) free(trp) ;
END_TRACE() ;
return status ;
case RQST_READAHEAD:
case RQST_LASTSEEK:
case RQST_PRESEEK:
/*
* At this point, a temporary buffer may need to be created to
* receive data which is going to be thrown away.
*/
if ( temp == 0 ) {
if ( rfilefdt[s_index]->_iobuf.base==NULL || rfilefdt[s_index]->_iobuf.dsize<msgsiz ) {
temp= 1 ;
TRACE(2,"rfio","rfio_write: allocating momentary buffer of size %d",msgsiz) ;
if ( (trp= ( char *) malloc(msgsiz)) == NULL ) {
TRACE(2,"rfio","rfio_write: malloc(): ERROR occured (errno=%d)",errno) ;
END_TRACE() ;
return -1 ;
}
}
else
trp= iodata(rfilefdt[s_index]) ;
}
TRACE(2, "rfio", "rfio_write: reading %d bytes to throw them away",msgsiz) ;
if ( netread_timeout(s,trp,msgsiz,RFIO_DATA_TIMEOUT) != msgsiz ) {
TRACE(2,"rfio", "rfio_write: read(): ERROR occured (errno=%d)", errno);
if ( temp ) (void) free(trp) ;
END_TRACE() ;
return -1 ;
}
break ;
default:
TRACE(1,"rfio","rfio_write(): Bad control word received\n") ;
serrno= SEINTERNAL ;
if ( temp ) (void) free(trp) ;
END_TRACE() ;
return -1 ;
}
}
}
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