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/*
* $Id: lockf.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: lockf.c,v $ $Revision: 1.1 $ $Date: 2005/03/31 13:13:00 $ CERN/IT/PDP/DM Antony Simmins";
#endif /* not lint */
/* lockf.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"
int DLL_DECL rfio_lockf(sd, op, siz) /* Remote lockf */
int sd, /* file descriptor */
op; /* lock operation */
long siz; /* locked region */
{
static char buf[256]; /* General input/output buffer */
int status; /* remote lockf() status */
int len;
char *p=buf;
int rt ;
int rcode ;
int s_index;
INIT_TRACE("RFIO_TRACE");
TRACE(1, "rfio", "rfio_lockf(%d, %d, %ld)", sd, op, siz);
/*
* The file is local
*/
if ((s_index=rfio_rfilefdt_findentry(sd, FINDRFILE_WITHOUT_SCAN)) == -1) {
TRACE(1, "rfio", "rfio_lockf: using local lockf(%d, %d, %ld)",
sd, op, siz);
END_TRACE();
rfio_errno = 0;
status = lockf(sd,op,siz);
if ( status < 0 ) serrno = 0;
return(status);
}
/*
* Checking mode 64.
*/
if (rfilefdt[s_index]->mode64) {
off64_t siz64;
siz64 = siz;
status = rfio_lockf64(sd, op, siz64);
END_TRACE();
return(status);
}
len = 2*LONGSIZE;
marshall_WORD(p, RFIO_MAGIC);
marshall_WORD(p, RQST_LOCKF);
marshall_WORD(p, geteuid());
marshall_WORD(p, getegid());
marshall_LONG(p, len);
p= buf + RQSTSIZE;
marshall_LONG(p, op);
marshall_LONG(p, siz);
TRACE(1,"rfio","rfio_lockf: op %d, siz %ld", op, siz);
TRACE(2,"rfio","rfio_lockf: sending %d bytes",RQSTSIZE+len) ;
if (netwrite_timeout(sd,buf,RQSTSIZE+len,RFIO_CTRL_TIMEOUT) != (RQSTSIZE+len)) {
TRACE(2, "rfio", "rfio_lockf: write(): ERROR occurred (errno=%d)", errno);
(void) close(sd);
END_TRACE();
return(-1);
}
p = buf;
TRACE(2, "rfio", "rfio_lockf: reading %d bytes", 2*LONGSIZE);
if (netread_timeout(sd, buf, 2*LONGSIZE, RFIO_CTRL_TIMEOUT) != (2*LONGSIZE)) {
TRACE(2, "rfio", "rfio_lockf: 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_lockf: return %d",status);
rfio_errno = rcode;
if (status) {
END_TRACE();
return(-1);
}
END_TRACE();
return (0);
}
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