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#include <u.h>
#include <libc.h>
#include <auth.h>
extern int newnsdebug;
char *defargv[] = { "/bin/rc", "-i", nil };
char *namespace = nil;
void
usage(void)
{
fprint(2, "usage: %s [-d] [-n namespace] [cmd [args...]]\n", argv0);
exits("usage");
}
void
run(char **a)
{
exec(a[0], a);
if(a[0][0] != '/' && a[0][0] != '#' &&
(a[0][0] != '.' || (a[0][1] != '/' &&
(a[0][1] != '.' || a[0][2] != '/'))))
exec(smprint("/bin/%s", a[0]), a);
sysfatal("exec: %s: %r", a[0]);
}
void
main(int argc, char *argv[])
{
ARGBEGIN{
case 'd':
newnsdebug = 1;
break;
case 'n':
namespace = EARGF(usage());
break;
default:
usage();
}ARGEND
if(procsetuser("none") < 0)
sysfatal("can't become none: %r");
if(newns("none", namespace) < 0)
sysfatal("can't build namespace: %r");
if(argc == 0)
argv = defargv;
run(argv);
}
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