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/*
* Copyright (c) 2001-2003 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
* Ohio Trollius
* Copyright 1997 The Ohio State University
* NJN
*
* $Id: rfstat.c,v 6.10 2003/11/02 19:30:52 brbarret Exp $
*
* Function: - rffstat() and rfstat()
* - get file status
*/
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <freq.h>
#include <net.h>
#include <portable.h>
#include <typical.h>
/*
* external variables
*/
extern struct fclient _ufd[FUMAX]; /* client file descriptor table */
/*
* external functions
*/
extern int _fdvalid(int); /* check validity of file desc */
extern int4 _makefreq(); /* make simple file request */
extern char *_fnparse(); /* parse nodeid from file name */
/*
* local functions
*/
/* convert to status structure */
static void conv_stat(struct stat *status, uint4 *buf);
/*
* lam_rfstat
*
* Function: - get status on a named file
* Accepts: - file name
* - ptr to status buffer
* Returns: - 0 or ERROR
*/
int
lam_rfstat(CONST char *fname, char *status)
{
int4 node; /* server node ID */
int4 len;
uint4 buf[17];
int ret;
fname = _fnparse(fname, &node);
len = (int4) (strlen(fname) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
ret = _makefreq(node, FQSTAT, INT4_NIL, fname, len, (char *) buf,
(int4) sizeof(buf));
if (ret == 0) {
conv_stat((struct stat *) status, buf);
}
return(ret);
}
/*
* lam_rffstat
*
* Function: - get status on a file descriptor
* Accepts: - file descriptor handle
* - ptr to status buffer
* Returns: - 0 or ERROR
*/
int
lam_rffstat(int fd, char *status)
{
uint4 buf[17];
int ret;
if (_fdvalid(fd)) return(LAMERROR);
if ((fd <= 2) && (_ufd[fd].fu_node == NOTNODEID)) {
_ufd[fd].fu_node = getorigin();
}
ret = _makefreq(_ufd[fd].fu_node, FQFSTAT, _ufd[fd].fu_tfd,
(char *) 0, INT4_NIL, (char *) buf, (int4) sizeof(buf));
if (ret == 0) {
conv_stat((struct stat *) status, buf);
}
return(ret);
}
#if !LAM_STAT_MEMBERS_INT4
/*
* stuff_buff
*
* Function: - stuff a buffer with a quantity
* - zero-pads dest if dest is longer than src
* Accepts: - two buffers and corresponding sizes
*/
static void
stuff_buff(char *src, int src_size, char *dest, int dest_size)
{
if (src_size >= dest_size)
memcpy(dest, src, dest_size);
else {
memcpy(dest, src, src_size);
memset(dest + src_size, 0, dest_size - src_size);
}
}
#endif
/*
* conv_stat
*
* Function: - stores an int4 array into a status structure
* Accepts: - ptr to stat structure
* - ptr to int4 array
*/
static void
conv_stat(struct stat *status, uint4 *buf)
{
#if LAM_STAT_MEMBERS_INT4
status->st_dev = buf[0];
status->st_ino = buf[1];
status->st_mode = buf[2];
status->st_nlink = buf[3];
status->st_uid = buf[4];
status->st_gid = buf[5];
status->st_size = buf[6];
status->st_atime = buf[7];
status->st_mtime = buf[8];
status->st_ctime = buf[9];
#else
stuff_buff((char*) &buf[0], sizeof(uint4),
(char*) &status->st_dev, sizeof(status->st_dev));
stuff_buff((char*) &buf[1], sizeof(uint4),
(char*) &status->st_ino, sizeof(status->st_ino));
stuff_buff((char*) &buf[2], sizeof(uint4),
(char*) &status->st_mode, sizeof(status->st_mode));
stuff_buff((char*) &buf[3], sizeof(uint4),
(char*) &status->st_nlink, sizeof(status->st_nlink));
stuff_buff((char*) &buf[4], sizeof(uint4),
(char*) &status->st_uid, sizeof(status->st_uid));
stuff_buff((char*) &buf[5], sizeof(uint4),
(char*) &status->st_gid, sizeof(status->st_gid));
stuff_buff((char*) &buf[6], sizeof(uint4),
(char*) &status->st_size, sizeof(status->st_size));
stuff_buff((char*) &buf[7], sizeof(uint4),
(char*) &status->st_atime, sizeof(status->st_atime));
stuff_buff((char*) &buf[8], sizeof(uint4),
(char*) &status->st_mtime, sizeof(status->st_mtime));
stuff_buff((char*) &buf[9], sizeof(uint4),
(char*) &status->st_ctime, sizeof(status->st_ctime));
#endif
}
/*
* backwards compatibility
*/
int
rfstat(CONST char *fname, char *status)
{
return(lam_rfstat(fname, status));
}
int
rffstat(int fd, char *status)
{
return(lam_rffstat(fd, status));
}
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