17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5aa59c4cbSrsb * Common Development and Distribution License (the "License").
6aa59c4cbSrsb * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22*ab04eb8eStimh * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
237c478bd9Sstevel@tonic-gate * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate #include <fs/fs_subr.h>
277c478bd9Sstevel@tonic-gate
287c478bd9Sstevel@tonic-gate #include <sys/errno.h>
297c478bd9Sstevel@tonic-gate #include <sys/kmem.h>
307c478bd9Sstevel@tonic-gate #include <sys/modctl.h>
317c478bd9Sstevel@tonic-gate #include <sys/objfs.h>
327c478bd9Sstevel@tonic-gate #include <sys/objfs_impl.h>
33aa59c4cbSrsb #include <sys/vfs_opreg.h>
347c478bd9Sstevel@tonic-gate #include <sys/systm.h>
357c478bd9Sstevel@tonic-gate
367c478bd9Sstevel@tonic-gate extern int last_module_id;
377c478bd9Sstevel@tonic-gate
38da6c28aaSamw static int objfs_root_do_lookup(vnode_t *, const char *, vnode_t **, ino64_t *,
39*ab04eb8eStimh cred_t *, int, int *, pathname_t *);
40b38f0970Sck153898 static int objfs_root_do_readdir(vnode_t *, void *, int *,
41b38f0970Sck153898 offset_t *, offset_t *, void *, int);
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate vnode_t *
objfs_create_root(vfs_t * vfsp)447c478bd9Sstevel@tonic-gate objfs_create_root(vfs_t *vfsp)
457c478bd9Sstevel@tonic-gate {
467c478bd9Sstevel@tonic-gate vnode_t *vp = gfs_root_create(sizeof (objfs_rootnode_t), vfsp,
477c478bd9Sstevel@tonic-gate objfs_ops_root, OBJFS_INO_ROOT, NULL, NULL, OBJFS_NAME_MAX,
487c478bd9Sstevel@tonic-gate objfs_root_do_readdir, objfs_root_do_lookup);
497c478bd9Sstevel@tonic-gate
507c478bd9Sstevel@tonic-gate return (vp);
517c478bd9Sstevel@tonic-gate }
527c478bd9Sstevel@tonic-gate
537c478bd9Sstevel@tonic-gate /* ARGSUSED */
547c478bd9Sstevel@tonic-gate static int
objfs_root_getattr(vnode_t * vp,vattr_t * vap,int flags,cred_t * cr,caller_context_t * ct)55da6c28aaSamw objfs_root_getattr(vnode_t *vp, vattr_t *vap, int flags, cred_t *cr,
56da6c28aaSamw caller_context_t *ct)
577c478bd9Sstevel@tonic-gate {
587c478bd9Sstevel@tonic-gate vap->va_type = VDIR;
597c478bd9Sstevel@tonic-gate vap->va_mode = 0555;
607c478bd9Sstevel@tonic-gate vap->va_nodeid = gfs_file_inode(vp);
617c478bd9Sstevel@tonic-gate vap->va_nlink = objfs_nobjs() + 2;
627c478bd9Sstevel@tonic-gate vap->va_size = vap->va_nlink;
637c478bd9Sstevel@tonic-gate vap->va_atime.tv_sec = vp->v_vfsp->vfs_mtime;
647c478bd9Sstevel@tonic-gate vap->va_atime.tv_nsec = 0;
657c478bd9Sstevel@tonic-gate vap->va_mtime = vap->va_ctime = vap->va_atime;
667c478bd9Sstevel@tonic-gate return (objfs_common_getattr(vp, vap));
677c478bd9Sstevel@tonic-gate }
687c478bd9Sstevel@tonic-gate
69da6c28aaSamw /* ARGSUSED */
707c478bd9Sstevel@tonic-gate static int
objfs_root_do_lookup(vnode_t * vp,const char * nm,vnode_t ** vpp,ino64_t * inop,cred_t * cr,int flags,int * deflags,pathname_t * rpnp)71da6c28aaSamw objfs_root_do_lookup(vnode_t *vp, const char *nm, vnode_t **vpp, ino64_t *inop,
72*ab04eb8eStimh cred_t *cr, int flags, int *deflags, pathname_t *rpnp)
737c478bd9Sstevel@tonic-gate {
747c478bd9Sstevel@tonic-gate int result = ENOENT;
757c478bd9Sstevel@tonic-gate struct modctl *mp;
767c478bd9Sstevel@tonic-gate
777c478bd9Sstevel@tonic-gate /*
787c478bd9Sstevel@tonic-gate * Run through all the loaded modules on the system looking for
797c478bd9Sstevel@tonic-gate * a matching module name.
807c478bd9Sstevel@tonic-gate */
817c478bd9Sstevel@tonic-gate mutex_enter(&mod_lock);
827c478bd9Sstevel@tonic-gate mp = &modules;
837c478bd9Sstevel@tonic-gate do {
847c478bd9Sstevel@tonic-gate if (mp->mod_loaded &&
857c478bd9Sstevel@tonic-gate strcmp(nm, mp->mod_modname) == 0) {
867c478bd9Sstevel@tonic-gate /*
877c478bd9Sstevel@tonic-gate * We drop mod_lock in order to do allocations,
887c478bd9Sstevel@tonic-gate * as modctls are persistent.
897c478bd9Sstevel@tonic-gate */
907c478bd9Sstevel@tonic-gate mutex_exit(&mod_lock);
917c478bd9Sstevel@tonic-gate *vpp = objfs_create_odirnode(vp, mp);
927c478bd9Sstevel@tonic-gate *inop = OBJFS_INO_ODIR(mp->mod_id);
937c478bd9Sstevel@tonic-gate mutex_enter(&mod_lock);
947c478bd9Sstevel@tonic-gate result = 0;
957c478bd9Sstevel@tonic-gate break;
967c478bd9Sstevel@tonic-gate }
977c478bd9Sstevel@tonic-gate } while ((mp = mp->mod_next) != &modules);
987c478bd9Sstevel@tonic-gate mutex_exit(&mod_lock);
997c478bd9Sstevel@tonic-gate
1007c478bd9Sstevel@tonic-gate return (result);
1017c478bd9Sstevel@tonic-gate }
1027c478bd9Sstevel@tonic-gate
1037c478bd9Sstevel@tonic-gate /* ARGSUSED */
1047c478bd9Sstevel@tonic-gate int
objfs_root_do_readdir(vnode_t * vp,void * dp,int * eofp,offset_t * offp,offset_t * nextp,void * data,int flags)105b38f0970Sck153898 objfs_root_do_readdir(vnode_t *vp, void *dp, int *eofp,
106b38f0970Sck153898 offset_t *offp, offset_t *nextp, void *data, int flags)
1077c478bd9Sstevel@tonic-gate {
1087c478bd9Sstevel@tonic-gate struct modctl **mpp = data;
1097c478bd9Sstevel@tonic-gate struct modctl *mp = *mpp;
110b38f0970Sck153898 struct dirent64 *odp = dp;
111b38f0970Sck153898
112*ab04eb8eStimh ASSERT(!(flags & V_RDDIR_ENTFLAGS));
1137c478bd9Sstevel@tonic-gate
1147c478bd9Sstevel@tonic-gate mutex_enter(&mod_lock);
1157c478bd9Sstevel@tonic-gate
1167c478bd9Sstevel@tonic-gate /* Check for EOF */
1177c478bd9Sstevel@tonic-gate if (*offp >= last_module_id) {
1187c478bd9Sstevel@tonic-gate *eofp = 1;
1197c478bd9Sstevel@tonic-gate mutex_exit(&mod_lock);
1207c478bd9Sstevel@tonic-gate return (0);
1217c478bd9Sstevel@tonic-gate }
1227c478bd9Sstevel@tonic-gate
1237c478bd9Sstevel@tonic-gate /*
1247c478bd9Sstevel@tonic-gate * Find the appropriate modctl
1257c478bd9Sstevel@tonic-gate */
1267c478bd9Sstevel@tonic-gate while (mp->mod_id < *offp) {
1277c478bd9Sstevel@tonic-gate mp = mp->mod_next;
1287c478bd9Sstevel@tonic-gate ASSERT(mp != &modules);
1297c478bd9Sstevel@tonic-gate }
1307c478bd9Sstevel@tonic-gate
1317c478bd9Sstevel@tonic-gate while (!mp->mod_loaded && mp != &modules)
1327c478bd9Sstevel@tonic-gate mp = mp->mod_next;
1337c478bd9Sstevel@tonic-gate
1347c478bd9Sstevel@tonic-gate if (mp == &modules && *offp != 0) {
1357c478bd9Sstevel@tonic-gate *eofp = 1;
1367c478bd9Sstevel@tonic-gate mutex_exit(&mod_lock);
1377c478bd9Sstevel@tonic-gate return (0);
1387c478bd9Sstevel@tonic-gate }
1397c478bd9Sstevel@tonic-gate
1407c478bd9Sstevel@tonic-gate /*
1417c478bd9Sstevel@tonic-gate * The modctl will not change, as they are persistent.
1427c478bd9Sstevel@tonic-gate */
1437c478bd9Sstevel@tonic-gate mutex_exit(&mod_lock);
1447c478bd9Sstevel@tonic-gate
145b38f0970Sck153898 (void) strncpy(odp->d_name, mp->mod_modname, OBJFS_NAME_MAX);
146b38f0970Sck153898 odp->d_ino = OBJFS_INO_ODIR(mp->mod_id);
1477c478bd9Sstevel@tonic-gate *offp = mp->mod_id;
1487c478bd9Sstevel@tonic-gate *nextp = mp->mod_id + 1;
1497c478bd9Sstevel@tonic-gate
1507c478bd9Sstevel@tonic-gate return (0);
1517c478bd9Sstevel@tonic-gate }
1527c478bd9Sstevel@tonic-gate
1537c478bd9Sstevel@tonic-gate /* ARGSUSED */
1547c478bd9Sstevel@tonic-gate static int
objfs_root_readdir(vnode_t * vp,uio_t * uiop,cred_t * cr,int * eofp,caller_context_t * ct,int flags)155da6c28aaSamw objfs_root_readdir(vnode_t *vp, uio_t *uiop, cred_t *cr, int *eofp,
156da6c28aaSamw caller_context_t *ct, int flags)
1577c478bd9Sstevel@tonic-gate {
1587c478bd9Sstevel@tonic-gate struct modctl *mp = &modules;
1597c478bd9Sstevel@tonic-gate
160b38f0970Sck153898 return (gfs_dir_readdir(vp, uiop, eofp, &mp, cr, ct, flags));
1617c478bd9Sstevel@tonic-gate }
1627c478bd9Sstevel@tonic-gate
1637c478bd9Sstevel@tonic-gate const fs_operation_def_t objfs_tops_root[] = {
164aa59c4cbSrsb { VOPNAME_OPEN, { .vop_open = objfs_dir_open } },
165aa59c4cbSrsb { VOPNAME_CLOSE, { .vop_close = objfs_common_close } },
166aa59c4cbSrsb { VOPNAME_IOCTL, { .error = fs_inval } },
167aa59c4cbSrsb { VOPNAME_GETATTR, { .vop_getattr = objfs_root_getattr } },
168aa59c4cbSrsb { VOPNAME_ACCESS, { .vop_access = objfs_dir_access } },
169aa59c4cbSrsb { VOPNAME_READDIR, { .vop_readdir = objfs_root_readdir } },
170aa59c4cbSrsb { VOPNAME_LOOKUP, { .vop_lookup = gfs_vop_lookup } },
171aa59c4cbSrsb { VOPNAME_SEEK, { .vop_seek = fs_seek } },
172aa59c4cbSrsb { VOPNAME_INACTIVE, { .vop_inactive = gfs_vop_inactive } },
1737c478bd9Sstevel@tonic-gate { NULL }
1747c478bd9Sstevel@tonic-gate };
175