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/*****************************************************************************\
* $Id$
*****************************************************************************
* Copyright (C) 2007-2011 Lawrence Livermore National Security, LLC.
* Copyright (C) 2001-2006 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* UCRL-CODE-2003-005.
*
* This file is part of Pdsh, a parallel remote shell program.
* For details, see <http://www.llnl.gov/linux/pdsh/>.
*
* Pdsh is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* Pdsh is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along
* with Pdsh; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
\*****************************************************************************/
/*
* This module uses the "pipecmd" interface to execute
* a process in a subdirectory based on the remote hostname.
* Used for pdcp/rpdcp testing.
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/wait.h>
#include <string.h>
#include <unistd.h>
#include "src/pdsh/opt.h"
#include "src/pdsh/mod.h"
#include "src/pdsh/rcmd.h"
#include "src/common/pipecmd.h"
#include "src/common/err.h"
#include "src/common/xmalloc.h"
#include "src/common/xstring.h"
int pdsh_module_priority = DEFAULT_MODULE_PRIORITY;
static int mod_pcptest_postop(opt_t *opt);
static int mod_pcptest_exit (void);
static int pcptest_init(opt_t *);
static int pcptest_signal(int, void *arg, int);
static int pcptest(char *, char *, char *, char *, char *, int, int *, void **);
static int pcptest_destroy (pipecmd_t p);
/*
* Export generic pdsh module operations:
*/
struct pdsh_module_operations pcptest_module_ops = {
(ModInitF) NULL,
(ModExitF) mod_pcptest_exit,
(ModReadWcollF) NULL,
(ModPostOpF) mod_pcptest_postop
};
/*
* Export rcmd module operations
*/
struct pdsh_rcmd_operations pcptest_rcmd_ops = {
(RcmdInitF) pcptest_init,
(RcmdSigF) pcptest_signal,
(RcmdF) pcptest,
(RcmdDestroyF) pcptest_destroy
};
/*
* Export module options
*/
struct pdsh_module_option pcptest_module_options[] =
{
PDSH_OPT_TABLE_END
};
/*
* Sshcmd module info
*/
struct pdsh_module pdsh_module_info = {
"rcmd",
"pcptest",
"Mark Grondona <mgrondona@llnl.gov>",
"Rcmd connect module used for pdcp/rpdcp testing",
PCP,
&pcptest_module_ops,
&pcptest_rcmd_ops,
&pcptest_module_options[0],
};
static int mod_pcptest_postop(opt_t *opt)
{
if (opt->rcmd_name && strcmp(opt->rcmd_name, "pcptest") == 0) {
if (opt->connect_timeout != CONNECT_TIMEOUT) {
err("%p: Cannot specify -t with \"-R pcptest\"\n");
return 1;
}
}
return 0;
}
static int pcptest_init(opt_t * opt)
{
/*
* Drop privileges if running setuid root
*/
if ((geteuid() == 0) && (getuid() != 0))
setuid (getuid ());
/*
* Do not resolve hostnames in pdsh when using pcptest
*/
if (rcmd_opt_set (RCMD_OPT_RESOLVE_HOSTS, 0) < 0)
errx ("%p: pcptest_init: rcmd_opt_set: %m\n");
return 0;
}
static int mod_pcptest_exit (void)
{
return 0;
}
static int pcptest_signal(int fd, void *arg, int signum)
{
return (pipecmd_signal ((pipecmd_t) arg, signum));
}
static const char **pcptest_argv_create (char *remote_cmd)
{
char *cmd;
const char **argv;
/* Prepend chdir to remote argv, then collapse args
* so they can be fed to /bin/sh -c
*/
cmd = Strdup ("cd %h; ");
xstrcat (&cmd, remote_cmd);
argv = Malloc (4 * sizeof (char *));
argv[0] = Strdup ("/bin/sh");
argv[1] = Strdup ("-c");
argv[2] = cmd;
argv[3] = NULL;
return argv;
}
static int
pcptest(char *ahost, char *addr, char *luser, char *ruser, char *cmd,
int rank, int *fd2p, void **arg)
{
pipecmd_t p;
const char **argv = pcptest_argv_create (cmd);
if (!(p = pipecmd (argv[0], argv + 1, ahost, ruser, rank)))
return (-1);
if (fd2p)
*fd2p = pipecmd_stderrfd (p);
*arg = p;
return (pipecmd_stdoutfd (p));
}
static int
pcptest_destroy (pipecmd_t p)
{
int status;
if (pipecmd_wait (p, &status) < 0)
return (1);
pipecmd_destroy (p);
return (WEXITSTATUS (status));
}
/*
* vi:tabstop=4 shiftwidth=4 expandtab
*/
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