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#include <u.h>
#include <libc.h>
#include <auth.h>
void
usage(void)
{
fprint(2, "usage: newns [-ad] [-n namespace] [cmd [args...]]\n");
exits("usage");
}
static int
rooted(char *s)
{
if(s[0] == '/')
return 1;
if(s[0] == '.' && s[1] == '/')
return 1;
if(s[0] == '.' && s[1] == '.' && s[2] == '/')
return 1;
return 0;
}
void
main(int argc, char **argv)
{
extern int newnsdebug;
char *defargv[] = { "/bin/rc", "-i", nil };
char *nsfile, err[ERRMAX];
int add;
rfork(RFNAMEG);
add = 0;
nsfile = "/lib/namespace";
ARGBEGIN{
case 'a':
add = 1;
break;
case 'd':
newnsdebug = 1;
break;
case 'n':
nsfile = ARGF();
break;
default:
usage();
break;
}ARGEND
if(argc == 0)
argv = defargv;
if (add)
addns(getuser(), nsfile);
else
newns(getuser(), nsfile);
exec(argv[0], argv);
if(!rooted(argv[0])){
rerrstr(err, sizeof err);
exec(smprint("/bin/%s", argv[0]), argv);
errstr(err, sizeof err);
}
sysfatal("exec: %s: %r", argv[0]);
}
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