1#include <sys/resource.h>
 2#include <ulimit.h>
 3#include <stdarg.h>
 4
 5long ulimit(int cmd, ...)
 6{
 7	struct rlimit rl;
 8	getrlimit(RLIMIT_FSIZE, &rl);
 9	if (cmd == UL_SETFSIZE) {
10		long val;
11		va_list ap;
12		va_start(ap, cmd);
13		val = va_arg(ap, long);
14		va_end(ap);
15		rl.rlim_cur = 512ULL * val;
16		if (setrlimit(RLIMIT_FSIZE, &rl)) return -1;
17	}
18	return rl.rlim_cur / 512;
19}