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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <sys/param.h> 31 #include <sys/time.h> 32 #include <sys/cred.h> 33 #include <sys/vfs.h> 34 #include <sys/gfs.h> 35 #include <sys/vnode.h> 36 #include <sys/systm.h> 37 #include <sys/errno.h> 38 #include <sys/sysmacros.h> 39 #include <fs/fs_subr.h> 40 #include <sys/contract.h> 41 #include <sys/contract_impl.h> 42 #include <sys/ctfs.h> 43 #include <sys/ctfs_impl.h> 44 #include <sys/file.h> 45 #include <sys/pathname.h> 46 47 /* 48 * Entries in a /system/contract/<type>/<ctid> directory. 49 */ 50 static gfs_dirent_t ctfs_ctls[] = { 51 { "ctl", ctfs_create_ctlnode, GFS_CACHE_VNODE, }, 52 { "status", ctfs_create_statnode, GFS_CACHE_VNODE }, 53 { "events", ctfs_create_evnode }, 54 { NULL } 55 }; 56 #define CTFS_NCTLS ((sizeof ctfs_ctls / sizeof (gfs_dirent_t)) - 1) 57 58 static ino64_t ctfs_cdir_do_inode(vnode_t *, int); 59 60 /* 61 * ctfs_create_cdirnode 62 * 63 * If necessary, creates a cdirnode for the specified contract and 64 * inserts it into the contract's list of vnodes. Returns either the 65 * existing vnode or the new one. 66 */ 67 vnode_t * 68 ctfs_create_cdirnode(vnode_t *pvp, contract_t *ct) 69 { 70 vnode_t *vp; 71 ctfs_cdirnode_t *cdir; 72 73 if ((vp = contract_vnode_get(ct, pvp->v_vfsp)) != NULL) 74 return (vp); 75 76 vp = gfs_dir_create(sizeof (ctfs_cdirnode_t), pvp, ctfs_ops_cdir, 77 ctfs_ctls, ctfs_cdir_do_inode, CTFS_NAME_MAX, NULL, NULL); 78 cdir = vp->v_data; 79 80 /* 81 * We must set the inode because this is called explicitly rather than 82 * through GFS callbacks. 83 */ 84 gfs_file_set_inode(vp, CTFS_INO_CT_DIR(ct->ct_id)); 85 86 cdir->ctfs_cn_contract = ct; 87 contract_hold(ct); 88 contract_vnode_set(ct, &cdir->ctfs_cn_linkage, vp); 89 90 return (vp); 91 } 92 93 /* 94 * ctfs_cdir_getattr - VOP_GETATTR entry point 95 */ 96 /* ARGSUSED */ 97 static int 98 ctfs_cdir_getattr(vnode_t *vp, vattr_t *vap, int flags, cred_t *cr) 99 { 100 ctfs_cdirnode_t *cdirnode = vp->v_data; 101 102 vap->va_type = VDIR; 103 vap->va_mode = 0555; 104 vap->va_nlink = 2 + CTFS_NCTLS; 105 vap->va_size = vap->va_nlink; 106 vap->va_ctime = cdirnode->ctfs_cn_contract->ct_ctime; 107 mutex_enter(&cdirnode->ctfs_cn_contract->ct_events.ctq_lock); 108 vap->va_atime = vap->va_mtime = 109 cdirnode->ctfs_cn_contract->ct_events.ctq_atime; 110 mutex_exit(&cdirnode->ctfs_cn_contract->ct_events.ctq_lock); 111 ctfs_common_getattr(vp, vap); 112 113 return (0); 114 } 115 116 /* 117 * ctfs_cdir_do_inode - return inode number based on static index 118 */ 119 static ino64_t 120 ctfs_cdir_do_inode(vnode_t *vp, int index) 121 { 122 ctfs_cdirnode_t *cdirnode = vp->v_data; 123 124 return (CTFS_INO_CT_FILE(cdirnode->ctfs_cn_contract->ct_id, index)); 125 } 126 127 /* 128 * ctfs_cdir_inactive - VOP_INACTIVE entry point 129 */ 130 /* ARGSUSED */ 131 static void 132 ctfs_cdir_inactive(vnode_t *vp, cred_t *cr) 133 { 134 ctfs_cdirnode_t *cdirnode = vp->v_data; 135 contract_t *ct = cdirnode->ctfs_cn_contract; 136 137 mutex_enter(&ct->ct_lock); 138 if (gfs_dir_inactive(vp) == NULL) { 139 mutex_exit(&ct->ct_lock); 140 return; 141 } 142 143 list_remove(&ct->ct_vnodes, &cdirnode->ctfs_cn_linkage); 144 mutex_exit(&ct->ct_lock); 145 146 contract_rele(ct); 147 kmem_free(cdirnode, sizeof (ctfs_cdirnode_t)); 148 } 149 150 151 const fs_operation_def_t ctfs_tops_cdir[] = { 152 { VOPNAME_OPEN, ctfs_open }, 153 { VOPNAME_CLOSE, ctfs_close }, 154 { VOPNAME_IOCTL, fs_inval }, 155 { VOPNAME_GETATTR, ctfs_cdir_getattr }, 156 { VOPNAME_ACCESS, ctfs_access_dir }, 157 { VOPNAME_READDIR, gfs_vop_readdir }, 158 { VOPNAME_LOOKUP, gfs_vop_lookup }, 159 { VOPNAME_SEEK, fs_seek }, 160 { VOPNAME_INACTIVE, (fs_generic_func_p) ctfs_cdir_inactive }, 161 { NULL, NULL } 162 }; 163