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/*
* Ported to Linux's Second Extended File System as part of the
* dump and restore backup suit
* Remy Card <card@Linux.EU.Org>, 1994-1997
* Stelian Pop <stelian@popies.net>, 1999-2000
* Stelian Pop <stelian@popies.net> - Alcve <www.alcove.com>, 2000-2002
*/
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$Id: system.c,v 1.3 2002/01/16 09:32:14 stelian Exp $";
#endif /* not lint */
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "system.h"
/*
* Executes the command in a shell.
* Returns -1 if an error occured, the exit status of
* the command on success.
*/
int system_command(const char *command, const char *device, int volnum) {
int pid, status;
char commandstr[4096];
pid = fork();
if (pid == -1) {
perror(" DUMP: unable to fork");
return -1;
}
if (pid == 0) {
setuid(getuid());
setgid(getgid());
#if OLD_STYLE_FSCRIPT
snprintf(commandstr, sizeof(commandstr), "%s", command);
#else
snprintf(commandstr, sizeof(commandstr), "%s %s %d", command, device, volnum);
#endif
commandstr[sizeof(commandstr) - 1] = '\0';
execl("/bin/sh", "sh", "-c", commandstr, NULL);
perror("unable to execute shell");
exit(-1);
}
do {
if (waitpid(pid, &status, 0) == -1) {
if (errno != EINTR) {
perror("waitpid error");
return -1;
}
} else {
if (WIFEXITED(status))
return WEXITSTATUS(status);
else
return -1;
}
} while(1);
}
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