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// $Id: vrsetup.c 2686 2008-02-28 23:12:06Z dhozac $ --*- c -*--
// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
//
// This program 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; version 2 of the License.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "util.h"
#include <getopt.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#define ENSC_WRAPPERS_FCNTL 1
#define ENSC_WRAPPERS_IOCTL 1
#define ENSC_WRAPPERS_UNISTD 1
#include <wrappers.h>
int wrapper_exit_code = 1;
#define VROOT_SET_DEV 0x5600
#define VROOT_CLR_DEV 0x5601
#define VROOT_INC_USE 0x56FE
#define VROOT_DEC_USE 0x56FF
struct option const
CMDLINE_OPTIONS[] = {
{ "help", no_argument, 0, 'h' },
{ "version", no_argument, 0, 'v' },
{ 0,0,0,0 }
};
static void
showHelp(int fd, char const *cmd, int res)
{
WRITE_MSG(fd, "Usage: ");
WRITE_STR(fd, cmd);
WRITE_MSG(fd,
" [-dID] <rootdev>\n"
" or ");
WRITE_STR(fd, cmd);
WRITE_MSG(fd,
" <rootdev> <real-rootdev>\n\n"
"Please report bugs to " PACKAGE_BUGREPORT "\n");
exit(res);
}
static void
showVersion()
{
WRITE_MSG(1,
"vrsetup " VERSION " -- set up and control vroot devices\n"
"This program is part of " PACKAGE_STRING "\n\n"
"Copyright (C) 2004 Enrico Scholz\n"
VERSION_COPYRIGHT_DISCLAIMER);
exit(0);
}
int main(int argc, char *argv[])
{
bool do_delete = false;
bool do_decrement = false;
bool do_increment = false;
bool do_setup = false;
char const * root_device = 0;
char const * real_root_device = 0;
int fd;
while (1) {
int c = getopt_long(argc, argv, "dID", CMDLINE_OPTIONS, 0);
if (c==-1) break;
switch (c) {
case 'h' : showHelp(1, argv[0], 0);
case 'v' : showVersion();
case 'd' : do_delete = true; break;
case 'D' : do_decrement = true; break;
case 'I' : do_increment = true; break;
default :
WRITE_MSG(2, "Try '");
WRITE_STR(2, argv[0]);
WRITE_MSG(2, " --help' for more information.\n");
return EXIT_FAILURE;
break;
}
}
do_setup = !(do_delete || do_decrement || do_increment);
if (optind+1>argc) {
WRITE_MSG(2, "No vroot-device given\n");
return EXIT_FAILURE;
}
if (do_setup && optind+2>argc) {
WRITE_MSG(2, "No real root-device given\n");
return EXIT_FAILURE;
}
root_device = argv[optind];
if (do_setup) real_root_device = argv[optind+1];
fd = EopenD(root_device, O_RDONLY, 0);
if (do_increment) Eioctl(fd, VROOT_INC_USE, 0);
else if (do_decrement) Eioctl(fd, VROOT_DEC_USE, 0);
else if (do_delete) Eioctl(fd, VROOT_CLR_DEV, 0);
else {
int dfd = EopenD(real_root_device, O_RDONLY, 0);
Eioctl(fd, VROOT_SET_DEV, (void*)(long)dfd);
Eclose(dfd);
}
Eclose(fd);
return EXIT_SUCCESS;
}
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