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/*
* $Id: xyread.c 3172 2010-02-15 08:51:54Z baud $
*/
/*
* Copyright (C) 1990-2010 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: xyread.c,v $ $Revision: 3172 $ $Date: 2010-02-15 09:51:54 +0100 (Mon, 15 Feb 2010) $ CERN/IT/PDP/DM Frederic Hemmer";
#endif /* not lint */
/* xyread.c Remote File I/O - Read a Fortran Logical Unit */
/*
* C bindings :
*
* rfio_xyread(int lun, char *buf, int nrec, int nwant, int *ngot
* char *chopt, int *irc);
*
* FORTRAN bindings :
*
* XYREAD(INTEGER*4 LUN, CHARACTER*(*)BUF, INTEGER*4 NREC,
* INTEGER*4 NWANT, INTEGER*4 NGOT, CHARACTER*(*)CHOPT,
* INTEGER*4 IRC)
*/
#define RFIO_KERNEL 1 /* system part of Remote File I/O */
#include "rfio.h" /* remote file I/O definitions */
#include <stdlib.h>
extern int DLL_DECL switch_read();
int DLL_DECL
rfio_xyread(lun, buf, nrec, nwant, ngot, chopt, irc)
int lun, nrec, nwant;
char *buf, *chopt;
int *ngot, *irc;
{
char buffer[128]; /* general purpose buffer */
register char *p=buf; /* buffer pointer */
register int readopt; /* read options */
int optval; /* setsockopt() value */
register int rbufsiz = 0; /* read buffer size */
int status; /* Fortran status */
int rcode; /* Remote return code */
register int i; /* general purpose index */
int acc;
TRACE(1, "rfio", "rfio_xyread(%d, %x, %d, %d, %x, %s, %x)",
lun, buf, nrec, nwant, ngot, chopt, irc);
if (ftnlun[lun] == (RFILE *) NULL) { /* Allocated ? */
TRACE(1, "rfio", "rfio_xyread: %s", "Bad file number");
END_TRACE();
return(EBADF);
}
TRACE(2, "rfio", "rfio_xyread: parsing options: [%s]",chopt);
readopt = FFREAD_N;
for (i=0;i< (int)strlen(chopt);i++) {
switch (chopt[i]) {
case 'u':
case 'U':
readopt = FFREAD_C;
break;
case ' ': break;
default :
*irc = SEBADFOPT;
END_TRACE();
return(SEBADFOPT);
}
}
if (!strcmp(ftnlun[lun]->host, "localhost")) { /* Local file ? */
acc = (int)ftnlun[lun]->access;
*irc=switch_read(acc,&lun,buf,&nwant, &nrec, readopt, ngot, LLM );
END_TRACE();
return(*irc);
}
p = buffer;
marshall_WORD(p, RFIO_MAGIC);
marshall_WORD(p, RQST_XYREAD);
marshall_LONG(p, readopt);
marshall_LONG(p, nrec);
marshall_LONG(p, nwant);
TRACE(2,"rfio","rfio_xyread: sending %d bytes",RQSTSIZE) ;
if (netwrite_timeout(ftnlun[lun]->s,buffer,RQSTSIZE,RFIO_CTRL_TIMEOUT) != RQSTSIZE) {
TRACE(2, "rfio" ,"rfio_xyread: write(): ERROR occured (errno=%d)", errno);
END_TRACE();
if ( serrno )
return ( serrno ) ;
else
return(errno);
}
if (rbufsiz < nwant) {
optval = nwant;
TRACE(2, "rfio", "rfio_xyread: setsockopt(SOL_SOCKET, SO_RCVBUF): %d", optval);
if (setsockopt(ftnlun[lun]->s, SOL_SOCKET, SO_RCVBUF, (char *)&optval, sizeof(optval)) == -1) {
TRACE(2, "rfio" ,"rfio_xyread: setsockopt(SO_RCVBUF): ERROR");
}
}
TRACE(2,"rfio","rfio_xyread: reading %d bytes",3*LONGSIZE) ;
if (netread_timeout(ftnlun[lun]->s, buffer, 3*LONGSIZE, RFIO_CTRL_TIMEOUT) != (3*LONGSIZE)) {
TRACE(2,"rfio","rfio_xyread: read(): ERROR occured (errno=%d)",errno) ;
END_TRACE();
if ( serrno )
return (serrno) ;
else
return(errno);
}
p = buffer;
unmarshall_LONG(p, status);
unmarshall_LONG(p, rcode);
unmarshall_LONG(p, *ngot);
if ( *ngot ) {
TRACE(2, "rfio", "rfio_xyread: reading %d bytes", *ngot);
if (netread_timeout(ftnlun[lun]->s, buf, *ngot, RFIO_DATA_TIMEOUT) != *ngot) {
TRACE(2, "rfio" ,"rfio_xyread: read(): ERROR occured (errno=%d)", errno);
END_TRACE();
if ( serrno )
return ( serrno ) ;
else
return(errno);
}
}
TRACE(1, "rfio", "rfio_xyread: status %d, rcode %d", status, rcode) ;
if ( rcode > SEBASEOFF )
serrno = rcode ;
else
rfio_errno= rcode;
return(*irc = status);
}
/*
* Fortran wrapper
*/
#if (defined(hpux) && !defined(PPU)) || (defined(_AIX) && !defined(EXTNAME))
#define xyread_ xyread
#endif /* hpux && !PPU || AIX && !EXTNAME */
#if defined(_WIN32)
void DLL_DECL _stdcall XYREAD(flun, fbuf, fnrec, fnwant, fngot, fchopt, fchoptl, firc)
#else
void xyread_(flun, fbuf, fnrec, fnwant, fngot, fchopt, firc, fchoptl)
#endif
int *flun, *fnrec, *fnwant, *fngot, *firc;
char *fbuf, *fchopt;
int fchoptl;
{
char *chopt; /* xyread options */
int status; /* xyread return status */
INIT_TRACE("RFIO_TRACE");
if ((chopt = malloc((unsigned) fchoptl+1)) == NULL) {
*firc = -errno;
END_TRACE();
return;
}
strncpy(chopt, fchopt, fchoptl); chopt[fchoptl] = '\0';
TRACE(1, "rfio", "XYREAD(%d, %x, %d, %d, %x, %s, %x)",
*flun, fbuf, *fnrec, *fnwant, fngot, chopt, firc);
status = rfio_xyread(*flun, fbuf, *fnrec, *fnwant, fngot, chopt, firc);
if (status) *firc = -status; /* system errors have precedence */
TRACE(1, "rfio", "XYREAD: status: %d, irc: %d",status,*firc);
END_TRACE();
(void) free(chopt);
return;
}
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