objfs_common.c revision da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * CDDL HEADER START
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest *
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * The contents of this file are subject to the terms of the
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * Common Development and Distribution License (the "License").
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * You may not use this file except in compliance with the License.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest *
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * or http://www.opensolaris.org/os/licensing.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * See the License for the specific language governing permissions
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * and limitations under the License.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest *
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * When distributing Covered Code, include this CDDL HEADER in each
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * If applicable, add the following below this CDDL HEADER, with the
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * fields enclosed by brackets "[]" replaced with your own identifying
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * information: Portions Copyright [yyyy] [name of copyright owner]
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest *
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * CDDL HEADER END
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * Use is subject to license terms.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest#pragma ident "%Z%%M% %I% %E% SMI"
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest#include <sys/errno.h>
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest#include <sys/file.h>
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest#include <sys/objfs.h>
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest#include <sys/objfs_impl.h>
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * For directories, make sure we are using large-file aware interfaces and we
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * aren't trying to open it writeable.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/* ARGSUSED */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestint
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestobjfs_dir_open(vnode_t **cpp, int flag, cred_t *cr,
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest caller_context_t *ct)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest{
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest if ((flag & (FOFFMAX | FWRITE)) != FOFFMAX)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest return (EINVAL);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest return (0);
06390306bc4fda0a1856efc17e9d20132eb9b05dJaco Jooste}
06390306bc4fda0a1856efc17e9d20132eb9b05dJaco Jooste
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * For all vnodes which have no cleanup to do at close time.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/* ARGSUSED */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestint
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestobjfs_common_close(vnode_t *vp, int flag, int count, offset_t off, cred_t *cr,
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest caller_context_t *ct)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest{
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest return (0);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest}
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * For directories, ensure we're not open for writing.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/* ARGSUSED */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestint
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestobjfs_dir_access(vnode_t *vp, int mode, int flags, cred_t *cr,
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest caller_context_t *ct)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest{
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest if (mode & VWRITE)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest return (EACCES);
06390306bc4fda0a1856efc17e9d20132eb9b05dJaco Jooste
06390306bc4fda0a1856efc17e9d20132eb9b05dJaco Jooste return (0);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest}
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * Fills in common fields for getattr().
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestint
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestobjfs_common_getattr(vnode_t *vp, vattr_t *vap)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest{
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_uid = 0;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_gid = 0;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_rdev = 0;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_blksize = DEV_BSIZE;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_nblocks = howmany(vap->va_size, vap->va_blksize);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_seq = 0;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest vap->va_fsid = vp->v_vfsp->vfs_dev;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest return (0);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest}
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest/*
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest * Returns the number objects currently loaded in the system.
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest */
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrestint
06390306bc4fda0a1856efc17e9d20132eb9b05dJaco Joosteobjfs_nobjs(void)
06390306bc4fda0a1856efc17e9d20132eb9b05dJaco Jooste{
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest int count = 0;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest struct modctl *mp;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest mutex_enter(&mod_lock);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest mp = &modules;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest do {
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest if (mp->mod_loaded)
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest count++;
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest } while ((mp = mp->mod_next) != &modules);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest mutex_exit(&mod_lock);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest return (count);
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest}
a898afa0c41d5bdca1134dce14666fef3cfed666Andrew Forrest