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

int main(int argc, char **argv)
{
	int fd, rc;
	char *name;
	if (argc > 1)
		name = argv[1];
	else
		name = "/var/tmp/foo";

	fd = open(name, O_CREAT|O_RDWR, S_IRWXU);
	if (fd == -1) {
		fprintf(stderr, "failed (%s) to open %s\n", strerror(errno), name);
		return errno;
	}
	rc = ftruncate(fd, 0);
	if (rc == -1) {
		fprintf(stderr, "failed (%s) to ftruncate\n", strerror(errno));
	}
	rc = truncate(name, 0);
	if (rc == -1) {
		fprintf(stderr, "failed (%s) to truncate %s\n", strerror(errno), name);
	}
	rc = unlink(name);
	if (rc == -1) {
		fprintf(stderr, "failed (%s) to unlink %s\n", strerror(errno), name);
	}
	rc = ftruncate(fd, 0);
	if (rc == -1) {
		fprintf(stderr, "failed (%s) to post unlink ftruncate\n", strerror(errno));
	}
	rc = truncate(name, 0);
	if (rc == -1) {
		fprintf(stderr, "failed (%s) to post unlink truncate %s\n", strerror(errno), name);
	}
	close(fd);
	return 0;
}