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/*
* $Id: symlink.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: symlink.c,v $ $Revision: 1.1 $ $Date: 2005/03/31 13:13:04 $ CERN/IT/PDP/DM Felix Hassine";
#endif /* not lint */
#define RFIO_KERNEL 1
#include "rfio.h"
#include <Cpwd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h> /* malloc prototype */
/*
* returns -1 if an error occured or no information is available at the
* daemon's host. 0 otherwise.
*/
int DLL_DECL rfio_symlink(n1,n2 )
char *n1 ;
char *n2 ;
{
int c;
int status ;
char *nbuf ;
int s ;
char *host ;
char * filename;
char *p ;
int ans_req ,rt, parserc ;
int rcode ;
int uid ;
int gid ;
struct passwd *pw ;
char buf[BUFSIZ];
/*
* The file is local.
*/
INIT_TRACE("RFIO_TRACE");
TRACE( 1, "rfio", " rfio_symlink (%s,%s)",n1,n2 );
if ( ! (parserc = rfio_parseln(n2,&host,&filename,NORDLINKS)) ) {
/* if not a remote file, must be local or HSM */
if ( host != NULL ) {
/*
* HSM file.
*/
TRACE(1,"rfio","rfio_symlink: %s is an HSM path",
filename);
END_TRACE();
rfio_errno = 0;
serrno = SEOPNOTSUP;
status = -1;
return(status);
}
TRACE(2,"rfio","rfio_symlink local %s -> %s",filename,n1);
#if ! defined(_WIN32)
status = symlink(n1,filename) ;
if ( status < 0 ) serrno = 0;
#else
{ serrno = SEOPNOTSUP; status = -1;}
#endif
END_TRACE() ;
rfio_errno = 0;
return status ;
}
if (parserc < 0) {
END_TRACE();
return(-1);
}
s = rfio_connect(host,&rt);
if (s < 0) {
END_TRACE();
return(-1);
}
uid = geteuid() ;
gid = getegid () ;
if ( (pw = Cgetpwuid(uid) ) == NULL ) {
TRACE(2, "rfio" ,"rfio_symlink: Cgetpwuid() error %s",
strerror(errno));
END_TRACE();
return -1 ;
}
p = buf ;
marshall_WORD(p, B_RFIO_MAGIC);
marshall_WORD(p, RQST_SYMLINK);
status = strlen(pw->pw_name)+strlen(n1)+strlen(filename)+3+2*WORDSIZE;
marshall_LONG(p, status) ;
if (netwrite_timeout(s,buf,RQSTSIZE,RFIO_CTRL_TIMEOUT) != RQSTSIZE) {
TRACE(2, "rfio", "symlink: write(): ERROR occured (errno=%d)",
errno);
(void) close(s);
END_TRACE();
return(-1);
}
nbuf = (char *) malloc( status ) ;
if ( nbuf == NULL ) {
TRACE(2, "rfio", "symlink: malloc () failed");
(void) close(s);
END_TRACE();
return(-1);
}
p = nbuf ;
marshall_WORD(p,uid) ;
marshall_WORD(p,gid) ;
marshall_STRING( p, n1 ) ;
marshall_STRING( p, filename ) ;
marshall_STRING( p, pw->pw_name) ;
if (netwrite_timeout(s,nbuf,status,RFIO_CTRL_TIMEOUT) != status ) {
TRACE(2, "rfio", "symlink: write(): ERROR occured (errno=%d)",errno);
(void) close(s);
free(nbuf);
END_TRACE();
return(-1);
}
(void) free(nbuf) ;
/*
* Getting back status
*/
if ((c=netread_timeout(s, buf, WORDSIZE + 2*LONGSIZE, RFIO_CTRL_TIMEOUT)) != (WORDSIZE+ 2*LONGSIZE)) {
if (c == 0) {
serrno = SEOPNOTSUP; /* symbolic links not supported on remote machine */
TRACE(2, "rfio", "rfio_symlink: read(): ERROR occured (serrno=%d)", serrno);
} else
TRACE(2, "rfio", "rfio_symlink: read(): ERROR occured (errno=%d)", errno);
(void) close(s);
END_TRACE();
return(-1);
}
p = buf;
unmarshall_WORD( p, ans_req );
unmarshall_LONG( p, status ) ;
unmarshall_LONG( p, rcode ) ;
if ( ans_req != RQST_SYMLINK ) {
TRACE(1,"rfio","rfio_symlink: ERROR: answer does not correspond to request !");
(void) close(s);
END_TRACE();
return(-1);
}
if ( status < 0 ) {
TRACE(1,"rfio","rfio_symlink: failure, error %d",rcode);
rfio_errno = rcode ;
(void) close(s);
END_TRACE();
return(status);
}
TRACE (2,"rfio","rfio_symlink succeded");
END_TRACE();
(void) close (s) ;
return(status) ;
}
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