#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>

int
main(int argc, char **argv)
{
	char *end;
	unsigned long mask;

	if (argc < 3) {
		fputs("usage: package-umaskexec MASK PROGRAM [ARG ...]\n", stderr);
		return 2;
	}
	errno = 0;
	mask = strtoul(argv[1], &end, 8);
	if (errno != 0 || end == argv[1] || *end != '\0' || mask > 0777) {
		fputs("package-umaskexec: invalid mask\n", stderr);
		return 2;
	}
	umask((mode_t)mask);
	execv(argv[2], &argv[2]);
	fputs("package-umaskexec: exec failed\n", stderr);
	return 127;
}