1#define FDOP_CLOSE 1
 2#define FDOP_DUP2 2
 3#define FDOP_OPEN 3
 4#define FDOP_CHDIR 4
 5#define FDOP_FCHDIR 5
 6
 7struct fdop {
 8	struct fdop *next, *prev;
 9	int cmd, fd, srcfd, oflag;
10	mode_t mode;
11	char path[];
12};
13
14#define malloc __libc_malloc
15#define calloc __libc_calloc
16#define realloc undef
17#define free __libc_free