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/*
* $Id: lockf64.c,v 1.1 2005/03/31 13:13:00 baud Exp $
*/
/*
* Copyright (C) 1994-2002 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: lockf64.c,v $ $Revision: 1.1 $ $Date: 2005/03/31 13:13:00 $ CERN/IT/PDP/DM Antony Simmins, P. Gaillardon";
#endif /* not lint */
/* lockf64.c Remote File I/O - record locking on files */
#define RFIO_KERNEL 1 /* KERNEL part of the routines */
#include "rfio.h" /* Remote File I/O general definitions */
#include "rfio_rfilefdt.h"
#include "u64subr.h"
int DLL_DECL rfio_lockf64(sd, op, siz) /* Remote lockf */
int sd; /* file descriptor */
int op; /* lock operation */
off64_t siz; /* locked region */
{
static char buf[256]; /* General input/output buffer */
int status; /* remote lockf() status */
int len;
int replen;
char *p=buf;
int rt ;
int rcode ;
int s_index;
char tmpbuf[21];
INIT_TRACE("RFIO_TRACE");
TRACE(1, "rfio", "rfio_lockf64(%d, %d, %s)", sd, op, i64tostr(siz,tmpbuf,0));
/*
* The file is local
*/
if ((s_index = rfio_rfilefdt_findentry(sd,FINDRFILE_WITHOUT_SCAN)) == -1) {
TRACE(1, "rfio", "rfio_lockf64: using local lockf64(%d, %d, %s)",
sd, op, i64tostr(siz,tmpbuf,0));
END_TRACE();
rfio_errno = 0;
status = lockf64(sd,op,siz);
if ( status < 0 ) serrno = 0;
return(status);
}
/*
* Reject call if bufferized or streamed mode
*/
if ( rfilefdt[s_index]->_iobuf.base != NULL || rfilefdt[s_index]->version3 ) {
TRACE(1, "rfio","rfio_lockf64: lockf rejected in bufferized or streamed mode");
END_TRACE();
errno = EBADF;
return(-1);
}
/*
* Repositionning file mark if needed.
*/
if ( (rfilefdt[s_index]->lseekhow == -1)
&& ( rfilefdt[s_index]->readissued || rfilefdt[s_index]->preseek ) ) {
rfilefdt[s_index]->lseekhow= SEEK_SET ;
rfilefdt[s_index]->lseekoff64= rfilefdt[s_index]->offset64 ;
}
/*
* 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.
*/
len = 1*LONGSIZE+ 2*HYPERSIZE;
marshall_WORD(p, RFIO_MAGIC);
marshall_WORD(p, RQST_LOCKF64);
marshall_LONG(p, rfilefdt[s_index]->lseekhow) ;
marshall_LONG(p, len);
p= buf + RQSTSIZE;
marshall_LONG(p, op);
marshall_HYPER(p, siz);
marshall_HYPER(p, rfilefdt[s_index]->lseekoff64) ;
TRACE(1,"rfio","rfio_lockf64: op %d, siz %s", op, i64tostr(siz,tmpbuf,0));
TRACE(2,"rfio","rfio_lockf64: sending %d bytes",RQSTSIZE+len) ;
if (netwrite_timeout(sd, buf, RQSTSIZE+len, RFIO_CTRL_TIMEOUT) != (RQSTSIZE+len)) {
TRACE(2, "rfio", "rfio_lockf64: write(): ERROR occurred (errno=%d)", errno);
(void) close(sd);
END_TRACE();
return(-1);
}
p = buf;
replen = 2*LONGSIZE;
TRACE(2, "rfio", "rfio_lockf64: reading %d bytes", replen);
if (netread_timeout(sd, buf, replen, RFIO_DATA_TIMEOUT) != replen) {
TRACE(2, "rfio", "rfio_lockf64: read(): ERROR occurred (errno=%d)", errno);
(void) close(sd);
END_TRACE();
return(-1);
}
unmarshall_LONG(p, status);
unmarshall_LONG(p, rcode);
TRACE(1, "rfio", "rfio_lockf64: return %d",status);
rfio_errno = rcode;
if (status) {
END_TRACE();
return(-1);
}
END_TRACE();
return (0);
}
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