miscfs/devfs/devfs_fdesc_support.c

69  * /dev/fd Filesystem
117 static int fdesc_attr(int fd, struct vnode_attr *vap, vfs_context_t a_context);
151 	dev_add_entry("fd", rootdir, DEV_DEVFD, NULL, NULL, NULL, &direntp);
172 	char zero[] = "fd/0";
173 	char one[] = "fd/1";
174 	char two[] = "fd/2";
211 	struct fdescnode *fd;
220 	for (fd = fc->lh_first; fd != 0; fd = fd->fd_hash.le_next) {
221 		if (fd->fd_ix == ix && vnode_mount(fd->fd_vnode) == mp) {
222 		        vid = vnode_vid(fd->fd_vnode);
225 			if (vnode_getwithvid(fd->fd_vnode, vid))
228 			*vpp = fd->fd_vnode;
245 	MALLOC(fd, void *, sizeof(struct fdescnode), M_TEMP, M_WAITOK);
251 	vfsp.vnfs_fsnode = fd;
262 		FREE(fd, M_TEMP);
268 	fd->fd_vnode = *vpp;
269 	fd->fd_type = ftype;
270 	fd->fd_fd = -1;
271 	fd->fd_link = NULL;
272 	fd->fd_ix = ix;
273 	fd->fd_fd = fdno;
277 	LIST_INSERT_HEAD(fc, fd, fd_hash);
296  * This vnop should only be called on the special directory /dev/fd.
307 	int fd;
320 	fd = 0;
322 		fd = 10 * fd + *pname++ - '0';
323 		if (fd >= numfiles)
332 	if (fd < 0 || fd >= numfiles ||
333 			*fdfile(p, fd) == NULL ||
334 			(*fdflags(p, fd) & UF_RESERVED)) {
339 	error = fdesc_allocvp(Fdesc, FD_DESC+fd, dvp->v_mount, &fvp, VNON, fd);
385 fdesc_attr(int fd, struct vnode_attr *vap, vfs_context_t a_context)
392 	if ((error = fp_lookup(p, fd, &fp, 0)))
453 	fp_drop(p, fd, fp, 0);
462 	unsigned fd;
467 		fd = VTOFDESC(vp)->fd_fd;
468 		error = fdesc_attr(fd, vap, ap->a_context);
494 	unsigned fd;
509 	fd = VTOFDESC(ap->a_vp)->fd_fd;
510 	if ((error = fp_lookup(vfs_context_proc(ap->a_context), fd, &fp, 0)))
537 	fp_drop(p, fd, fp, 0);
550 	{ FD_DEVFD, UIO_MX, 2, "fd" },
558 /* Only called on /dev/fd */
646 	struct fdescnode *fd = VTOFDESC(vp);
650 	LIST_REMOVE(fd, fd_hash);
692  * /dev/fd "should never get here" operation