fs/devfs/devfs_devs.c

193 	struct devfs_dirent *de;
195 	TAILQ_FOREACH(de, &dd->de_dlist, de_list) {
196 		if (namelen != de->de_dirent->d_namlen)
198 		if (type != 0 && type != de->de_dirent->d_type)
206 		if (de->de_dirent->d_type == DT_CHR &&
207 		    (de->de_cdp->cdp_flags & CDP_ACTIVE) == 0)
210 		if (bcmp(name, de->de_dirent->d_name, namelen) != 0)
214 	KASSERT(de == NULL || (de->de_flags & DE_DOOMED) == 0,
216 	return (de);
223 	struct devfs_dirent *de;
227 	i = sizeof(*de) + GENERIC_DIRSIZ(&d);
228 	de = malloc(i, M_DEVFS3, M_WAITOK | M_ZERO);
229 	de->de_dirent = (struct dirent *)(de + 1);
230 	de->de_dirent->d_namlen = namelen;
231 	de->de_dirent->d_reclen = GENERIC_DIRSIZ(&d);
232 	bcopy(name, de->de_dirent->d_name, namelen);
233 	dirent_terminate(de->de_dirent);
234 	vfs_timestamp(&de->de_ctime);
235 	de->de_mtime = de->de_atime = de->de_ctime;
236 	de->de_links = 1;
237 	de->de_holdcnt = 1;
239 	mac_devfs_init(de);
241 	return (de);
245 devfs_parent_dirent(struct devfs_dirent *de)
248 	if (de->de_dirent->d_type != DT_DIR)
249 		return (de->de_dir);
251 	if (de->de_flags & (DE_DOT | DE_DOTDOT))
254 	de = TAILQ_FIRST(&de->de_dlist);	/* "." */
255 	if (de == NULL)
257 	de = TAILQ_NEXT(de, de_list);		/* ".." */
258 	if (de == NULL)
261 	return (de->de_dir);
269 	struct devfs_dirent *de;
289 	de = devfs_newdirent(".", 1);
290 	de->de_dirent->d_type = DT_DIR;
291 	de->de_flags |= DE_DOT;
292 	TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list);
293 	de->de_dir = dd;
296 	de = devfs_newdirent("..", 2);
297 	de->de_dirent->d_type = DT_DIR;
298 	de->de_flags |= DE_DOTDOT;
299 	TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list);
301 		de->de_dir = dd;
303 		de->de_dir = dotdot;
317 devfs_dirent_free(struct devfs_dirent *de)
321 	vp = de->de_vnode;
323 	if (vp != NULL && vp->v_data == de)
326 	free(de, M_DEVFS3);
334 devfs_rmdir_empty(struct devfs_mount *dm, struct devfs_dirent *de)
341 		KASSERT(de->de_dirent->d_type == DT_DIR,
342 		    ("devfs_rmdir_empty: de is not a directory"));
344 		if ((de->de_flags & DE_DOOMED) != 0 || de == dm->dm_rootdir)
347 		de_dot = TAILQ_FIRST(&de->de_dlist);
355 		dd = devfs_parent_dirent(de);
357 		TAILQ_REMOVE(&de->de_dlist, de_dot, de_list);
358 		TAILQ_REMOVE(&de->de_dlist, de_dotdot, de_list);
359 		TAILQ_REMOVE(&dd->de_dlist, de, de_list);
361 		devfs_delete(dm, de, DEVFS_DEL_NORECURSE);
369 		de = dd;
378 devfs_delete(struct devfs_mount *dm, struct devfs_dirent *de, int flags)
383 	KASSERT((de->de_flags & DE_DOOMED) == 0,
385 	de->de_flags |= DE_DOOMED;
388 		dd = devfs_parent_dirent(de);
391 		if (de->de_flags & DE_USER) {
399 	vp = de->de_vnode;
411 	if (de->de_symlink) {
412 		free(de->de_symlink, M_DEVFS);
413 		de->de_symlink = NULL;
416 	mac_devfs_destroy(de);
418 	if (de->de_inode > DEVFS_ROOTINO) {
419 		devfs_free_cdp_inode(de->de_inode);
420 		de->de_inode = 0;
422 	if (DEVFS_DE_DROP(de))
423 		devfs_dirent_free(de);
442 	struct devfs_dirent *de;
453 		de = TAILQ_LAST(&dd->de_dlist, devfs_dlist_head);
454 		if (de == NULL)
456 		TAILQ_REMOVE(&dd->de_dlist, de, de_list);
457 		if (de->de_flags & DE_USER)
459 		if (de->de_flags & (DE_DOT | DE_DOTDOT))
460 			devfs_delete(dm, de, DEVFS_DEL_NORECURSE);
461 		else if (de->de_dirent->d_type == DT_DIR)
462 			devfs_purge(dm, de);
464 			devfs_delete(dm, de, DEVFS_DEL_NORECURSE);
512 	struct devfs_dirent *de;
533 			de = cdp->cdp_dirents[dm->dm_idx];
535 			KASSERT(cdp == de->de_cdp,
537 			    cdp->cdp_c.si_name, cdp, de->de_cdp));
538 			KASSERT(de->de_dir != NULL, ("Null de->de_dir"));
541 			TAILQ_REMOVE(&de->de_dir->de_dlist, de, de_list);
542 			de->de_cdp = NULL;
543 			de->de_inode = 0;
544 			devfs_delete(dm, de, 0);
571 			de = cdp->cdp_dirents[dm->dm_idx];
572 			KASSERT(cdp == de->de_cdp, ("inconsistent cdp"));
589 			de = devfs_find(dd, s, q - s, 0);
590 			if (de == NULL)
591 				de = devfs_vmkdir(dm, s, q - s, dd, 0);
592 			else if (de->de_dirent->d_type == DT_LNK) {
593 				de = devfs_find(dd, s, q - s, DT_DIR);
594 				if (de == NULL)
595 					de = devfs_vmkdir(dm, s, q - s, dd, 0);
596 				de->de_flags |= DE_COVERED;
599 			dd = de;
606 		de = devfs_find(dd, s, q - s, DT_LNK);
607 		if (de != NULL)
610 		de = devfs_newdirent(s, q - s);
612 			de->de_uid = 0;
613 			de->de_gid = 0;
614 			de->de_mode = 0755;
615 			de->de_dirent->d_type = DT_LNK;
623 			de->de_symlink = malloc(j, M_DEVFS, M_WAITOK);
624 			de->de_symlink[0] = 0;
626 				strcat(de->de_symlink, "../");
627 			strcat(de->de_symlink, pdev->si_name);
629 			de->de_uid = cdp->cdp_c.si_uid;
630 			de->de_gid = cdp->cdp_c.si_gid;
631 			de->de_mode = cdp->cdp_c.si_mode;
632 			de->de_dirent->d_type = DT_CHR;
634 		de->de_flags |= de_flags;
635 		de->de_inode = cdp->cdp_inode;
636 		de->de_cdp = cdp;
639 		    &cdp->cdp_c, de);
641 		de->de_dir = dd;
642 		TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list);
643 		devfs_rules_apply(dm, de);
648 		cdp->cdp_dirents[dm->dm_idx] = de;
649 		KASSERT(de->de_cdp != (void *)0xdeadc0de,