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/* This is part of um-ViewOS
* The user-mode implementation of OSVIEW -- A Process with a View
*
* viewumount: umount command for viewos
*
* Copyright 2009 Renzo Davoli University of Bologna - Italy
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* 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.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <config.h>
#include<stdio.h>
#include<stdlib.h>
#include<fcntl.h>
#include<getopt.h>
#include<sys/mount.h>
void usage(void)
{
fprintf(stderr,"Usage:\n"
" viewumount -h : print this help\n"
" viewumount [-f] [-l] special | node : ordinary mount command\n"
"For many more details, say man 1 viewumount\n"
);
exit(2);
}
int main(int argc, char * argv[])
{
char *target=NULL;
unsigned long umountflags;
int opt;
while ((opt = getopt(argc, argv, "hfl")) != -1) {
switch (opt) {
case 'r':
umountflags |= MNT_FORCE;
break;
case 'l':
umountflags |= MNT_DETACH;
break;
default: /* '?' */
usage();
}
}
if (optind >= argc)
usage();
target=argv[optind];
if (umount2(target, umountflags))
perror("umount");
return 0;
}
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