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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 1995 The Ohio State University
* GDB
*
* $Id: rfsimplex.c,v 6.6 2003/11/02 19:30:51 brbarret Exp $
*
* Function: - simple, basic, filed requests
*/
#include <errno.h>
#include <string.h>
#include <freq.h>
#include <net.h>
#include <portable.h>
#include <typical.h>
#include <t_types.h>
#define MYNULL ((char *) 0)
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif
/*
* 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 */
/*
* lam_rfmkdir
*
* Function: - make a new directory
* Accepts: - ptr to extended file name
* - access mode for directory
* Returns: - 0 or ERROR
*/
int
lam_rfmkdir(fname, mode)
CONST char *fname;
int4 mode;
{
int4 node; /* server node ID */
int4 len; /* length of file name */
fname = _fnparse(fname, &node);
len = (int4) (strlen(fname) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
return((int) _makefreq(node, FQMKDIR, mode, fname, len, MYNULL,
INT4_NIL));
}
/*
* lam_rfaccess
*
* Function: - check accessibility of a file
* Accepts: - ptr to extended file name
* - access mode sought
* Returns: - 0 or ERROR
*/
int
lam_rfaccess(fname, mode)
CONST char *fname;
int4 mode;
{
int4 node; /* server node ID */
int4 len; /* length of file name */
fname = _fnparse(fname, &node);
len = (int4) (strlen(fname) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
return((int) _makefreq(node, FQACCESS, mode, fname, len, MYNULL,
INT4_NIL));
}
/*
* lam_rfchdir
*
* Function: - change the current working directory
* Accepts: - nodeid of filed
* - new working directory
* Returns: - 0 or ERROR
*/
int
lam_rfchdir(node, newdir)
int4 node;
CONST char *newdir;
{
int4 len;
len = (int4) (strlen(newdir) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
return((int) _makefreq(node, FQCHDIR, INT4_NIL, newdir, len, MYNULL,
INT4_NIL));
}
/*
* lam_rfgetwd
*
* Function: - get the current working directory
* Accepts: - nodeid of filed
* - caller's buffer for working directory
* Returns: - 0 or ERROR
*/
char *
lam_rfgetwd(node, currdir)
int4 node;
char *currdir;
{
if (_makefreq(node, FQGETWD, INT4_NIL, MYNULL, INT4_NIL,
currdir, (int4) MAXPATHLEN) == ERROR) {
return(MYNULL);
} else {
return(currdir);
}
}
/*
* lam_rfrmfd
*
* Function: - remove a filed descriptor
* Accepts: - nodeid of filed
* - file descriptor handle
* Returns: - 0 or ERROR
*/
int
lam_rfrmfd(node, tfd)
int4 node;
int4 tfd;
{
return((int) _makefreq(node, FQRMFD, tfd, MYNULL, INT4_NIL, MYNULL,
INT4_NIL));
}
/*
* lam_rfsystem
*
* Function: - issue a shell command
* Accepts: - node ID of filed
* - shell command
* Returns: - exit status
*/
int
lam_rfsystem(node, cmd)
int4 node;
CONST char *cmd;
{
int4 len;
len = (int4) (strlen(cmd) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
return((int) _makefreq(node, FQSYSTEM, INT4_NIL, cmd, len, MYNULL,
INT4_NIL));
}
/*
* lam_rfunlink
*
* Function: - remove a file
* Accepts: - extended file name
* Returns: - 0 or ERROR
*/
int
lam_rfunlink(fname)
CONST char *fname;
{
int4 node; /* server node ID */
int4 len;
fname = _fnparse(fname, &node);
len = (int4) (strlen(fname) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
return((int) _makefreq(node, FQUNLINK, INT4_NIL, fname, len, MYNULL,
INT4_NIL));
}
/*
* lam_rfrmdir
*
* Function: - remove a directory
* Accepts: - pathname of directory
* Returns: - 0 or ERROR
*/
int
lam_rfrmdir(fname)
CONST char *fname;
{
int4 node; /* server node ID */
int4 len;
fname = _fnparse(fname, &node);
len = (int4) (strlen(fname) + 1);
if (len > MAXNMSGLEN) len = MAXNMSGLEN;
return((int) _makefreq(node, FQRMDIR, INT4_NIL, fname, len, MYNULL,
INT4_NIL));
}
/*
* lam_rfftruncate
*
* Function: - set an open file to a specified length
* Accepts: - file descriptor handle
* - new file length
* Returns: - 0 or ERROR
*/
int
lam_rfftruncate(fd, len)
int fd;
int4 len;
{
if (_fdvalid(fd) == ERROR) {
return(ERROR);
}
if ((fd <= 2) && (_ufd[fd].fu_node == NOTNODEID)) {
_ufd[fd].fu_node = getorigin();
}
len = ltot(len);
return((int) _makefreq(_ufd[fd].fu_node, FQFTRUNC, _ufd[fd].fu_tfd,
(char *) &len, (int4) sizeof(int4), MYNULL, INT4_NIL));
}
/*
* lam_rftruncate
*
* Function: - set a named file to a specified length
* Accepts: - file name
* - new file length
* Returns: - 0 or ERROR
*/
int
lam_rftruncate(fname, len)
CONST char *fname;
int4 len;
{
int4 node; /* server node ID */
int4 lfname; /* length of fname */
fname = _fnparse(fname, &node);
lfname = (int4) (strlen(fname) + 1);
if (lfname > MAXNMSGLEN) lfname = MAXNMSGLEN;
return((int) _makefreq(node, FQTRUNC, len, fname, lfname, MYNULL,
INT4_NIL));
}
/*
* lam_rfincr
*
* Function: - increment usage count of a file descriptor
* Accepts: - file descriptor handle
* - increment amount
* Returns: - 0 or ERROR
*/
int
lam_rfincr(fd, amount)
int fd;
int4 amount;
{
if (_fdvalid(fd) == ERROR) {
return(ERROR);
}
if ((fd <= 2) && (_ufd[fd].fu_node == NOTNODEID)) {
_ufd[fd].fu_node = getorigin();
}
amount = ltot(amount);
return((int) _makefreq(_ufd[fd].fu_node, FQINCR, _ufd[fd].fu_tfd,
(char *) &amount, (int4) sizeof(int4), MYNULL, INT4_NIL));
}
/*
* lam_rfdup
*
* Function: - duplicate file descriptor
* Accepts: - existing open file descriptor
* Returns: - 0 or ERROR
*/
int
lam_rfdup(ofd)
int ofd;
{
int nfd; /* new file descriptor */
if (_fdvalid(ofd) == ERROR) {
return(ERROR);
}
/*
* Find slot in client fd table.
*/
for (nfd = 3; (nfd < FUMAX) && (_ufd[nfd].fu_tflags != 0); ++nfd) {
}
if (nfd >= FUMAX) {
errno = ENFILE;
return(ERROR);
}
if ((ofd <= 2) && (_ufd[ofd].fu_node == NOTNODEID)) {
_ufd[ofd].fu_node = getorigin();
}
_ufd[nfd].fu_tfd = _makefreq(_ufd[ofd].fu_node, FQDUP,
_ufd[ofd].fu_tfd, MYNULL, INT4_NIL, MYNULL, INT4_NIL);
if (_ufd[nfd].fu_tfd == ERROR) {
return(ERROR);
} else {
_ufd[nfd].fu_tflags = _ufd[ofd].fu_tflags;
_ufd[nfd].fu_node = _ufd[ofd].fu_node;
return(nfd);
}
}
/*
* lam_rfdup2
*
* Function: - duplicate file descriptor to specific handle
* Accepts: - existing open file descriptor
* - new file descriptor
* Returns: - 0 or ERROR
*/
int
lam_rfdup2(ofd, nfd)
int ofd;
int nfd;
{
if (_fdvalid(ofd) == ERROR) {
return(ERROR);
}
if ((nfd < 0) || (nfd >= FUMAX)) {
errno = EBADF;
return(ERROR);
}
if (_ufd[nfd].fu_tflags != 0) {
if (lam_rfclose(nfd) == ERROR) {
return(ERROR);
}
}
if ((ofd <= 2) && (_ufd[ofd].fu_node == NOTNODEID)) {
_ufd[ofd].fu_node = getorigin();
}
_ufd[nfd].fu_tfd = _makefreq(_ufd[ofd].fu_node, FQDUP,
_ufd[ofd].fu_tfd, MYNULL, INT4_NIL, MYNULL, INT4_NIL);
if (_ufd[nfd].fu_tfd == ERROR) {
return(ERROR);
} else {
_ufd[nfd].fu_tflags = _ufd[ofd].fu_tflags;
_ufd[nfd].fu_node = _ufd[ofd].fu_node;
return(nfd);
}
}
/*
* backwards compatibility
*/
int
rfmkdir(CONST char *fname, int4 mode)
{
return(lam_rfmkdir(fname, mode));
}
int
rfaccess(CONST char *fname, int4 mode)
{
return(lam_rfaccess(fname, mode));
}
int
rfchdir(int4 node, CONST char *newdir)
{
return(lam_rfchdir(node, newdir));
}
char *
rfgetwd(int4 node, char *currdir)
{
return(lam_rfgetwd(node, currdir));
}
int
rfrmfd(int4 node, int4 tfd)
{
return(lam_rfrmfd(node, tfd));
}
int
rfsystem(int4 node, CONST char *cmd)
{
return(lam_rfsystem(node, cmd));
}
int
rfunlink(CONST char *fname)
{
return(lam_rfunlink(fname));
}
int
rfrmdir(CONST char *fname)
{
return(lam_rfrmdir(fname));
}
int
rfftruncate(int fd, int4 len)
{
return(lam_rfftruncate(fd, len));
}
int
rftruncate(CONST char *fname, int4 len)
{
return(lam_rftruncate(fname, len));
}
int
rfincr(int fd, int4 amount)
{
return(lam_rfincr(fd, amount));
}
int
rfdup(int ofd)
{
return(lam_rfdup(ofd));
}
int
rfdup2(int ofd, int nfd)
{
return(lam_rfdup2(ofd, nfd));
}
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