opendir.c

早期freebsd实现

static char sccsid[] = "@(#)opendir.c 4.4 11/12/82";

#include <sys/param.h>
#include <dir.h>

/*
 * open a directory.
 */
DIR *
opendir(name)
	char *name;
{
	register DIR *dirp;
	register int fd;

	if ((fd = open(name, 0)) == -1)
		return NULL;
	if ((dirp = (DIR *)malloc(sizeof(DIR))) == NULL) {
		close (fd);
		return NULL;
	}
	dirp->dd_fd = fd;
	dirp->dd_loc = 0;
	return dirp;
}