gzdopen
ZEXTERN gzFile ZEXPORT gzdopen(int fd, const char *mode);
gzf = gzdopen(fd, "r");
file = gzdopen(fileno(stdin), "rb");
file = gzdopen(fileno(stdout), outmode);
file = gzdopen(fileno(stdout), outmode);
gzfd = gzdopen(fd, "r");
ZEXTERN gzFile ZEXPORT gzdopen(int fd, const char *mode);
if ((f->gzf = gzdopen(fd, "r")) != NULL)
if ((gz = gzdopen(fd, "rb")) == NULL) {
gzf = gzdopen(fileno(out), "wb");
gzf = gzdopen(fileno(in), "r");
if ((fp = gzdopen(vm->vm_kernel, "r")) == NULL)