/* Needed to obtain |O_PATH| */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/statfs.h>
#include <sys/types.h>
#include <sys/stat.h>



int main(int ac, char *av[])
{
	int fd;
	struct statfs statfsbuf;
	
	(void)memset(&statfsbuf, 0, sizeof(statfsbuf));
	
	fd = open("/tmp", O_RDONLY|O_PATH);
	if (fd < 0)
	{
		perror("open() failed.");
		return EXIT_FAILURE;
	}
	
	if (fstatfs(fd, &statfsbuf) != 0)
	{
		perror("fstatfs() failed.");
		return EXIT_FAILURE;
	}	

	(void)close(fd);

	(void)printf("f_blocks=%ld\n",	(long)statfsbuf.f_blocks);
	(void)printf("f_bfree=%ld\n",	(long)statfsbuf.f_bfree);
	(void)printf("f_bavail=%ld\n",	(long)statfsbuf.f_bavail);

	return EXIT_SUCCESS;
}