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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.
*
* $HEADER$
*
* $Id: fctl.c,v 6.14 2003/02/27 03:01:10 jsquyres Exp $
*
* Function: - command to control certain filed functions
* Accepts: - see the "usage" variable
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/types.h>
#include <netdb.h>
#include <unistd.h>
#include <args.h>
#include <etc_misc.h>
#include <freq.h>
#include <net.h>
#include <priority.h>
#include <terror.h>
#include <typical.h>
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif
/*
* local functions
*/
static void help(void);
/*
* local variables
*/
static char *usage =
"fctl [-hS] [-s <descno>] [<directory>] <nodes>\n";
static char pwd[MAXPATHLEN];
int
main(int argc, char *argv[])
{
int n_index; /* index of node entry */
int nodeid; /* value of node entry */
int n_flags; /* extra node entry info */
int tfd; /* filed descriptor # */
/* Ensure that we are not root */
#ifndef LAM_ALLOW_RUN_AS_ROOT
if (getuid() == 0 || geteuid() == 0) {
show_help(NULL, "deny-root", NULL);
exit(EACCES);
}
#endif
/*
* Parse the command line.
*/
validopts("Ssh");
followed("s");
exclusive("Ss");
if (do_args(&argc, argv)) {
fprintf(stderr, usage);
exit(errno);
}
/*
* Check for help request.
*/
if (opt_taken('h')) {
help();
exit(0);
}
/*
* Attach to kernel.
*/
if (kinit(PRCMD)) {
char hostname[MAXHOSTNAMELEN];
gethostname(hostname, MAXHOSTNAMELEN);
show_help(NULL, "no-lamd", "fctl", hostname, NULL);
exit(errno);
}
if ((nid_parse(&argc, argv)) || (errno = (argc <= 2) ? 0 : EUSAGE)) {
fprintf(stderr, usage);
kexit(errno);
}
/*
* Loop through all specified nodes.
*/
nid_get(&n_index, &nodeid, &n_flags);
if (n_index < 0) {
fprintf(stderr, usage);
kexit(EUSAGE);
}
do {
/*
* Clean up file descriptors in filed.
*/
if (opt_taken('S')) {
if (lam_rfrmfd(nodeid, NOTFD)) lamfail("fctl (rfrmfd)");
} else if (opt_taken('s')) {
intparam('s', &tfd);
if (lam_rfrmfd(nodeid, tfd)) lamfail("fctl (rfrmfd)");
}
/*
* Print the current working directory.
*/
else if (argc == 1) {
if (lam_rfgetwd(nodeid, pwd) == 0)
lamfail("fctl (rfgetwd)");
printf("%s: %s\n", nid_fmt(nodeid), pwd);
}
/*
* Change current working directory.
*/
else if (argc == 2) {
if (lam_rfchdir(nodeid, argv[1]))
lamfail("fctl (rfchdir)");
}
nid_get(&n_index, &nodeid, &n_flags);
} while (n_index);
kexit(0);
return(0);
}
/*
* help
*
* Function: - prints helpful information on the fctl command
*/
static void
help(void)
{
printf("\nSynopsis: fctl [options] <nodes> [<dir>]\n");
printf("\nDescription: Control file daemon operations.\n");
printf("\nOptions: -h Print this help message.\n");
printf("\t\t-S Blow away all open descriptors.\n");
printf("\t\t-s <#> Blow away one specific descriptor.\n");
printf("\t\t<dir> Change to new working directory.\n");
printf("\t\tnone Print current working directory.\n");
nid_usage();
printf("\t\th (local), o (origin), N (all)\n");
printf("\nExample: fctl h -S\n");
printf("\t\t\t\"Clean up (reset) the file daemon.\"\n");
}
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