fs/devfs/devfs_vnops.c

222  * On success devfs_populate_vp() returns with dmp->dm_lock held.
228 	struct devfs_mount *dmp;
233 	dmp = VFSTODEVFS(vp->v_mount);
236 	sx_xlock(&dmp->dm_lock);
237 	DEVFS_DMP_HOLD(dmp);
241 	devfs_populate(dmp);
243 	sx_xunlock(&dmp->dm_lock);
245 	sx_xlock(&dmp->dm_lock);
246 	if (DEVFS_DMP_DROP(dmp)) {
247 		sx_xunlock(&dmp->dm_lock);
248 		devfs_unmount_final(dmp);
252 		sx_xunlock(&dmp->dm_lock);
259 		sx_xunlock(&dmp->dm_lock);
271 	struct devfs_mount *dmp;
277 	dmp = VFSTODEVFS(vp->v_mount);
296 		if (dd == dmp->dm_rootdir) {
333 	sx_xunlock(&dmp->dm_lock);
342 devfs_fqpn(char *buf, struct devfs_mount *dmp, struct devfs_dirent *dd,
348 	sx_assert(&dmp->dm_lock, SA_LOCKED);
359 	while (de != dmp->dm_rootdir) {
379 devfs_allocv_drop_refs(int drop_dm_lock, struct devfs_mount *dmp,
391 	if (DEVFS_DMP_DROP(dmp)) {
395 		sx_xunlock(&dmp->dm_lock);
396 		devfs_unmount_final(dmp);
399 		sx_unlock(&dmp->dm_lock);
418  * devfs_allocv shall be entered with dmp->dm_lock held, and it drops
428 	struct devfs_mount *dmp;
431 	dmp = VFSTODEVFS(mp);
433 		sx_xunlock(&dmp->dm_lock);
438 	DEVFS_DMP_HOLD(dmp);
444 		sx_xunlock(&dmp->dm_lock);
446 		sx_xlock(&dmp->dm_lock);
447 		if (devfs_allocv_drop_refs(0, dmp, de)) {
461 		sx_xunlock(&dmp->dm_lock);
468 			devfs_allocv_drop_refs(1, dmp, de);
477 		devfs_allocv_drop_refs(1, dmp, de);
516 		(void) devfs_allocv_drop_refs(1, dmp, de);
519 	if (devfs_allocv_drop_refs(0, dmp, de)) {
526 	sx_xunlock(&dmp->dm_lock);
712 	struct devfs_mount *dmp;
719 	dmp = VFSTODEVFS(vp->v_mount);
720 	sx_xunlock(&dmp->dm_lock);
906 	struct devfs_mount *dmp;
918 	dmp = VFSTODEVFS(dvp->v_mount);
969 		pname = devfs_fqpn(specname, dmp, dd, cnp);
974 		DEVFS_DMP_HOLD(dmp);
975 		sx_xunlock(&dmp->dm_lock);
982 			sx_xlock(&dmp->dm_lock);
985 			sx_xlock(&dmp->dm_lock);
986 			if (DEVFS_DMP_DROP(dmp)) {
987 				sx_xunlock(&dmp->dm_lock);
988 				devfs_unmount_final(dmp);
990 				sx_xunlock(&dmp->dm_lock);
994 		if (DEVFS_DMP_DROP(dmp)) {
996 			sx_xunlock(&dmp->dm_lock);
997 			devfs_unmount_final(dmp);
1007 		dde = &cdev2priv(cdev)->cdp_dirents[dmp->dm_idx];
1047 	struct devfs_mount *dmp;
1053 	dmp = VFSTODEVFS(ap->a_dvp->v_mount);
1057 		sx_xunlock(&dmp->dm_lock);
1067 	struct devfs_mount *dmp;
1077 	dmp = VFSTODEVFS(dvp->v_mount);
1084 	sx_xlock(&dmp->dm_lock);
1104 	sx_xunlock(&dmp->dm_lock);
1282 	struct devfs_mount *dmp;
1308 	dmp = VFSTODEVFS(ap->a_vp->v_mount);
1338 	sx_xunlock(&dmp->dm_lock);
1409 	struct devfs_mount *dmp = VFSTODEVFS(vp->v_mount);
1414 	sx_xlock(&dmp->dm_lock);
1429 		devfs_delete(dmp, de, 0);
1430 		sx_xunlock(&dmp->dm_lock);
1436 		sx_xunlock(&dmp->dm_lock);
1519 	struct devfs_mount *dmp;
1528 	dmp = VFSTODEVFS(vp->v_mount);
1529 	sx_xlock(&dmp->dm_lock);
1531 	DEVFS_DMP_HOLD(dmp);
1532 	devfs_populate(dmp);
1533 	if (DEVFS_DMP_DROP(dmp)) {
1534 		sx_xunlock(&dmp->dm_lock);
1535 		devfs_unmount_final(dmp);
1538 	error = devfs_rules_ioctl(dmp, ap->a_command, ap->a_data, ap->a_td);
1539 	sx_xunlock(&dmp->dm_lock);
1678 	struct devfs_mount *dmp;
1683 	dmp = VFSTODEVFS(ap->a_dvp->v_mount);
1700 	mac_devfs_create_symlink(ap->a_cnp->cn_cred, dmp->dm_mount, dd, de);
1706 			devfs_delete(dmp, de, DEVFS_DEL_NORECURSE);
1707 			sx_xunlock(&dmp->dm_lock);
1718 	devfs_dir_ref_de(dmp, dd);
1719 	devfs_rules_apply(dmp, de);