1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/errno.h> 27 #include <sys/file.h> 28 #include <sys/objfs.h> 29 #include <sys/objfs_impl.h> 30 31 /* 32 * For directories, make sure we are using large-file aware interfaces and we 33 * aren't trying to open it writeable. 34 */ 35 /* ARGSUSED */ 36 int 37 objfs_dir_open(vnode_t **cpp, int flag, cred_t *cr, 38 caller_context_t *ct) 39 { 40 if ((flag & (FOFFMAX | FWRITE)) != FOFFMAX) 41 return (EINVAL); 42 43 return (0); 44 } 45 46 /* 47 * For all vnodes which have no cleanup to do at close time. 48 */ 49 /* ARGSUSED */ 50 int 51 objfs_common_close(vnode_t *vp, int flag, int count, offset_t off, cred_t *cr, 52 caller_context_t *ct) 53 { 54 return (0); 55 } 56 57 /* 58 * For directories, ensure we're not open for writing. 59 */ 60 /* ARGSUSED */ 61 int 62 objfs_dir_access(vnode_t *vp, int mode, int flags, cred_t *cr, 63 caller_context_t *ct) 64 { 65 if (mode & VWRITE) 66 return (EACCES); 67 68 return (0); 69 } 70 71 /* 72 * Fills in common fields for getattr(). 73 */ 74 int 75 objfs_common_getattr(vnode_t *vp, vattr_t *vap) 76 { 77 vap->va_uid = 0; 78 vap->va_gid = 0; 79 vap->va_rdev = 0; 80 vap->va_blksize = DEV_BSIZE; 81 vap->va_nblocks = howmany(vap->va_size, vap->va_blksize); 82 vap->va_seq = 0; 83 vap->va_fsid = vp->v_vfsp->vfs_dev; 84 85 return (0); 86 } 87 88 /* 89 * Returns the number objects currently loaded in the system. 90 */ 91 int 92 objfs_nobjs(void) 93 { 94 int count = 0; 95 struct modctl *mp; 96 97 mutex_enter(&mod_lock); 98 mp = &modules; 99 100 do { 101 if (mp->mod_loaded) 102 count++; 103 } while ((mp = mp->mod_next) != &modules); 104 105 mutex_exit(&mod_lock); 106 107 return (count); 108 } 109