ubase/unshare.c

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/* See LICENSE file for copyright and license details. */
#include <sched.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
#include "util.h"
static void
usage(void)
{
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eprintf("usage: %s [-muinpU] cmd [args...]\n", argv0);
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}
int
main(int argc, char *argv[])
{
int flags = 0;
ARGBEGIN {
case 'm':
flags |= CLONE_NEWNS;
break;
case 'u':
flags |= CLONE_NEWUTS;
break;
case 'i':
flags |= CLONE_NEWIPC;
break;
case 'n':
flags |= CLONE_NEWNET;
break;
case 'p':
flags |= CLONE_NEWPID;
break;
case 'U':
flags |= CLONE_NEWUSER;
break;
default:
usage();
} ARGEND;
if (argc < 1)
usage();
if (unshare(flags) < 0)
eprintf("unshare:");
if (execvp(argv[0], argv) < 0)
eprintf("execvp:");
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return EXIT_SUCCESS;
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}