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/types.h> 27 #include <sys/param.h> 28 #include <sys/time.h> 29 #include <sys/cred.h> 30 #include <sys/vfs.h> 31 #include <sys/vfs_opreg.h> 32 #include <sys/gfs.h> 33 #include <sys/vnode.h> 34 #include <sys/systm.h> 35 #include <sys/errno.h> 36 #include <sys/sysmacros.h> 37 #include <fs/fs_subr.h> 38 #include <sys/contract.h> 39 #include <sys/contract_impl.h> 40 #include <sys/ctfs.h> 41 #include <sys/ctfs_impl.h> 42 #include <sys/file.h> 43 #include <sys/pathname.h> 44 45 /* 46 * Entries in a /system/contract/<type>/<ctid> directory. 47 */ 48 static gfs_dirent_t ctfs_ctls[] = { 49 { "ctl", ctfs_create_ctlnode, GFS_CACHE_VNODE, }, 50 { "status", ctfs_create_statnode, GFS_CACHE_VNODE }, 51 { "events", ctfs_create_evnode }, 52 { NULL } 53 }; 54 #define CTFS_NCTLS ((sizeof ctfs_ctls / sizeof (gfs_dirent_t)) - 1) 55 56 static ino64_t ctfs_cdir_do_inode(vnode_t *, int); 57 58 /* 59 * ctfs_create_cdirnode 60 * 61 * If necessary, creates a cdirnode for the specified contract and 62 * inserts it into the contract's list of vnodes. Returns either the 63 * existing vnode or the new one. 64 */ 65 vnode_t * 66 ctfs_create_cdirnode(vnode_t *pvp, contract_t *ct) 67 { 68 vnode_t *vp; 69 ctfs_cdirnode_t *cdir; 70 71 if ((vp = contract_vnode_get(ct, pvp->v_vfsp)) != NULL) 72 return (vp); 73 74 vp = gfs_dir_create(sizeof (ctfs_cdirnode_t), pvp, ctfs_ops_cdir, 75 ctfs_ctls, ctfs_cdir_do_inode, CTFS_NAME_MAX, NULL, NULL); 76 cdir = vp->v_data; 77 78 /* 79 * We must set the inode because this is called explicitly rather than 80 * through GFS callbacks. 81 */ 82 gfs_file_set_inode(vp, CTFS_INO_CT_DIR(ct->ct_id)); 83 84 cdir->ctfs_cn_contract = ct; 85 contract_hold(ct); 86 contract_vnode_set(ct, &cdir->ctfs_cn_linkage, vp); 87 88 return (vp); 89 } 90 91 /* 92 * ctfs_cdir_getattr - VOP_GETATTR entry point 93 */ 94 /* ARGSUSED */ 95 static int 96 ctfs_cdir_getattr( 97 vnode_t *vp, 98 vattr_t *vap, 99 int flags, 100 cred_t *cr, 101 caller_context_t *ct) 102 { 103 ctfs_cdirnode_t *cdirnode = vp->v_data; 104 105 vap->va_type = VDIR; 106 vap->va_mode = 0555; 107 vap->va_nlink = 2 + CTFS_NCTLS; 108 vap->va_size = vap->va_nlink; 109 vap->va_ctime = cdirnode->ctfs_cn_contract->ct_ctime; 110 mutex_enter(&cdirnode->ctfs_cn_contract->ct_events.ctq_lock); 111 vap->va_atime = vap->va_mtime = 112 cdirnode->ctfs_cn_contract->ct_events.ctq_atime; 113 mutex_exit(&cdirnode->ctfs_cn_contract->ct_events.ctq_lock); 114 ctfs_common_getattr(vp, vap); 115 116 return (0); 117 } 118 119 /* 120 * ctfs_cdir_do_inode - return inode number based on static index 121 */ 122 static ino64_t 123 ctfs_cdir_do_inode(vnode_t *vp, int index) 124 { 125 ctfs_cdirnode_t *cdirnode = vp->v_data; 126 127 return (CTFS_INO_CT_FILE(cdirnode->ctfs_cn_contract->ct_id, index)); 128 } 129 130 /* 131 * ctfs_cdir_inactive - VOP_INACTIVE entry point 132 */ 133 /* ARGSUSED */ 134 static void 135 ctfs_cdir_inactive(vnode_t *vp, cred_t *cr, caller_context_t *cct) 136 { 137 ctfs_cdirnode_t *cdirnode = vp->v_data; 138 contract_t *ct = cdirnode->ctfs_cn_contract; 139 140 mutex_enter(&ct->ct_lock); 141 if (gfs_dir_inactive(vp) == NULL) { 142 mutex_exit(&ct->ct_lock); 143 return; 144 } 145 146 list_remove(&ct->ct_vnodes, &cdirnode->ctfs_cn_linkage); 147 mutex_exit(&ct->ct_lock); 148 149 contract_rele(ct); 150 kmem_free(cdirnode, sizeof (ctfs_cdirnode_t)); 151 } 152 153 154 const fs_operation_def_t ctfs_tops_cdir[] = { 155 { VOPNAME_OPEN, { .vop_open = ctfs_open } }, 156 { VOPNAME_CLOSE, { .vop_close = ctfs_close } }, 157 { VOPNAME_IOCTL, { .error = fs_inval } }, 158 { VOPNAME_GETATTR, { .vop_getattr = ctfs_cdir_getattr } }, 159 { VOPNAME_ACCESS, { .vop_access = ctfs_access_dir } }, 160 { VOPNAME_READDIR, { .vop_readdir = gfs_vop_readdir } }, 161 { VOPNAME_LOOKUP, { .vop_lookup = gfs_vop_lookup } }, 162 { VOPNAME_SEEK, { .vop_seek = fs_seek } }, 163 { VOPNAME_INACTIVE, { .vop_inactive = ctfs_cdir_inactive } }, 164 { NULL, NULL } 165 }; 166