#define _GNU_SOURCE

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <stdio.h>

struct {
	const char *name;
	int flag;
} table [] = {
	{ "path", O_PATH },
	{ "cx",   O_CLOEXEC },
	{ "tmpf", O_TMPFILE },
	{ "rdwr", O_RDWR },
};

#define TABLELEN sizeof(table)/sizeof(table[0])

static int
encode(const char* const s)
{
	for (int i = 0; i < TABLELEN; i++)
		if (!strcmp (s, table[i].name))
			return table[i].flag;
	return 0;
}

static void
print_usage(FILE *fp, const char *const prog)
{
	fprintf(fp, "Usage:\n");
	fprintf(fp, "	%s FILENAME FLAG ...\n", prog);
	fprintf(fp, "Flags:\n");
	for (int i = 0; i < TABLELEN; i++)
		fprintf(fp, "	%s\n", table[i].name);
}

int
main(int argc, char **argv)
{

	if (argc < 3) {
		fprintf(stderr, "Too few argument\n");
		print_usage (stderr, argv[0]);
		return 1;
	}

	char *fname = argv[1];
	int flags = 0;

	for (int i = 2; i < argc; i++)
		flags |= encode(argv[i]);

	int fd = open (fname, flags);
	if (fd < 0) {
		perror("open");
		return 1;
	}

	printf ("%d\n", getpid());
	fflush (stdout);
	pause ();
	return 0;
}
