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/*
* $Id: fchown.c,v 1.1 2005/03/31 13:13:00 baud Exp $
*/
/*
* Copyright (C) 2002 by CERN/IT/DS/HSM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: fchown.c,v $ $Revision: 1.1 $ $Date: 2005/03/31 13:13:00 $ CERN/IT/DS/HSM Jean-Philippe Baud";
#endif /* not lint */
/* fchown.c Remote File I/O - change ownership of 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 chown
*/
int DLL_DECL rfio_fchown(s, owner, group)
int s;
int owner ; /* Owner's uid */
int group ; /* Owner's gid */
{
int status ;
char * p ;
char * trp ;
int temp=0 ;
char rfio_buf[BUFSIZ];
int s_index = -1;
INIT_TRACE("RFIO_TRACE");
TRACE(1, "rfio", "rfio_fchown(%d, %d, %d)", s, owner, group);
/*
* The file is local
*/
if ((s_index = rfio_rfilefdt_findentry(s,FINDRFILE_WITHOUT_SCAN)) == -1) {
TRACE(2, "rfio", "rfio_fchown: using local fchown(%d, %d, %d)", s, owner, group);
status = fchown(s, owner, group);
if ( status < 0 ) serrno = 0;
rfio_errno = 0;
END_TRACE();
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);
}
/*
* Sending request.
*/
p= rfio_buf ;
marshall_WORD(p, RFIO_MAGIC);
marshall_WORD(p, RQST_FCHOWN);
marshall_WORD(p, owner);
marshall_WORD(p, group);
TRACE(2,"rfio","rfio_fchown: sending %d bytes",RQSTSIZE) ;
if (netwrite_timeout(s,rfio_buf,RQSTSIZE,RFIO_CTRL_TIMEOUT) != RQSTSIZE) {
TRACE(2, "rfio", "rfio_fchown: write(): ERROR occured (errno=%d)", errno);
END_TRACE();
return(-1);
}
/*
* Getting data from the network.
*/
for(;;) {
WORD req ;
LONG rcode ;
LONG msgsiz ;
TRACE(2, "rfio", "rfio_fchown: reading %d bytes",rfilefdt[s_index]->_iobuf.hsize) ;
if (netread_timeout(s,rfio_buf,rfilefdt[s_index]->_iobuf.hsize,RFIO_DATA_TIMEOUT) != rfilefdt[s_index]->_iobuf.hsize) {
TRACE(2, "rfio", "rfio_fchown: 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_FCHOWN:
rfio_errno= rcode ;
if ( temp ) (void) free(trp) ;
TRACE(1,"rfio","rfio_fchown: return status %d, rcode %d",status,rcode) ;
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(3,"rfio","rfio_fchown: allocating momentary buffer of size %d",msgsiz) ;
if ( (trp= ( char *) malloc(msgsiz)) == NULL ) {
TRACE(3,"rfio","rfio_fchown: malloc(): ERROR occured (errno=%d)",errno) ;
END_TRACE() ;
return(-1) ;
}
}
else
trp= iodata(rfilefdt[s_index]) ;
}
if ( netread_timeout(s,trp,msgsiz,RFIO_DATA_TIMEOUT) != msgsiz ) {
TRACE(2,"rfio","rfio_fchown: read(): ERROR occured (errno=%d)",errno) ;
if ( temp ) (void) free(trp) ;
END_TRACE() ;
return(-1) ;
}
break ;
default:
TRACE(1,"rfio","rfio_fchown(): Bad control word received\n") ;
serrno= SEINTERNAL ;
if ( temp ) (void) free(trp) ;
END_TRACE() ;
return(-1) ;
}
}
}
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