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 #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #include <sys/types.h> 297c478bd9Sstevel@tonic-gate #include <sys/param.h> 307c478bd9Sstevel@tonic-gate #include <sys/time.h> 317c478bd9Sstevel@tonic-gate #include <sys/cred.h> 327c478bd9Sstevel@tonic-gate #include <sys/vfs.h> 33aa59c4cbSrsb #include <sys/vfs_opreg.h> 347c478bd9Sstevel@tonic-gate #include <sys/gfs.h> 357c478bd9Sstevel@tonic-gate #include <sys/vnode.h> 367c478bd9Sstevel@tonic-gate #include <sys/systm.h> 377c478bd9Sstevel@tonic-gate #include <sys/errno.h> 387c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 397c478bd9Sstevel@tonic-gate #include <fs/fs_subr.h> 407c478bd9Sstevel@tonic-gate #include <sys/contract.h> 417c478bd9Sstevel@tonic-gate #include <sys/contract_impl.h> 427c478bd9Sstevel@tonic-gate #include <sys/ctfs.h> 437c478bd9Sstevel@tonic-gate #include <sys/ctfs_impl.h> 447c478bd9Sstevel@tonic-gate #include <sys/file.h> 457c478bd9Sstevel@tonic-gate 467c478bd9Sstevel@tonic-gate /* 477c478bd9Sstevel@tonic-gate * CTFS routines for the /system/contract/<type>/latest vnode. 487c478bd9Sstevel@tonic-gate */ 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate /* 517c478bd9Sstevel@tonic-gate * ctfs_create_latenode 527c478bd9Sstevel@tonic-gate */ 537c478bd9Sstevel@tonic-gate vnode_t * 547c478bd9Sstevel@tonic-gate ctfs_create_latenode(vnode_t *pvp) 557c478bd9Sstevel@tonic-gate { 567c478bd9Sstevel@tonic-gate return (gfs_file_create(sizeof (ctfs_latenode_t), pvp, 577c478bd9Sstevel@tonic-gate ctfs_ops_latest)); 587c478bd9Sstevel@tonic-gate } 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate /* 617c478bd9Sstevel@tonic-gate * ctfs_latest_nested_open 627c478bd9Sstevel@tonic-gate * 637c478bd9Sstevel@tonic-gate * The latest node is just a doorway to the status file; this function 647c478bd9Sstevel@tonic-gate * is used by ctfs_latest_access, ctfs_latest_open, and 657c478bd9Sstevel@tonic-gate * ctfs_latest_getattr to obtain that file. 667c478bd9Sstevel@tonic-gate */ 677c478bd9Sstevel@tonic-gate static vnode_t * 68da6c28aaSamw ctfs_latest_nested_open(vnode_t *vp, cred_t *cr) 697c478bd9Sstevel@tonic-gate { 707c478bd9Sstevel@tonic-gate contract_t *ct = ttolwp(curthread)->lwp_ct_latest[ 717c478bd9Sstevel@tonic-gate gfs_file_index(gfs_file_parent(vp))]; 727c478bd9Sstevel@tonic-gate 737c478bd9Sstevel@tonic-gate if (ct) { 747c478bd9Sstevel@tonic-gate vnode_t *cvp, *svp; 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate cvp = ctfs_create_cdirnode(gfs_file_parent(vp), ct); 777c478bd9Sstevel@tonic-gate 787c478bd9Sstevel@tonic-gate gfs_file_set_index(cvp, -1); 797c478bd9Sstevel@tonic-gate 80*ab04eb8eStimh VERIFY(gfs_dir_lookup(cvp, "status", &svp, 81*ab04eb8eStimh cr, 0, NULL, NULL) == 0); 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate VN_RELE(cvp); 847c478bd9Sstevel@tonic-gate 857c478bd9Sstevel@tonic-gate return (svp); 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate return (NULL); 897c478bd9Sstevel@tonic-gate } 907c478bd9Sstevel@tonic-gate 917c478bd9Sstevel@tonic-gate /* 927c478bd9Sstevel@tonic-gate * ctfs_latest_access - VOP_ACCESS entry point 937c478bd9Sstevel@tonic-gate * 947c478bd9Sstevel@tonic-gate * Fails if there isn't a latest contract. 957c478bd9Sstevel@tonic-gate */ 967c478bd9Sstevel@tonic-gate /* ARGSUSED */ 977c478bd9Sstevel@tonic-gate static int 98da6c28aaSamw ctfs_latest_access( 99da6c28aaSamw vnode_t *vp, 100da6c28aaSamw int mode, 101da6c28aaSamw int flags, 102da6c28aaSamw cred_t *cr, 103da6c28aaSamw caller_context_t *ct) 1047c478bd9Sstevel@tonic-gate { 1057c478bd9Sstevel@tonic-gate vnode_t *nvp; 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate if (mode & (VEXEC | VWRITE)) 1087c478bd9Sstevel@tonic-gate return (EACCES); 1097c478bd9Sstevel@tonic-gate 110da6c28aaSamw if (nvp = ctfs_latest_nested_open(vp, cr)) { 1117c478bd9Sstevel@tonic-gate VN_RELE(nvp); 1127c478bd9Sstevel@tonic-gate return (0); 1137c478bd9Sstevel@tonic-gate } 1147c478bd9Sstevel@tonic-gate 1157c478bd9Sstevel@tonic-gate return (ESRCH); 1167c478bd9Sstevel@tonic-gate } 1177c478bd9Sstevel@tonic-gate 1187c478bd9Sstevel@tonic-gate /* 1197c478bd9Sstevel@tonic-gate * ctfs_latest_open - VOP_OPEN entry point 1207c478bd9Sstevel@tonic-gate * 1217c478bd9Sstevel@tonic-gate * After checking the mode bits, opens and returns the status file for 1227c478bd9Sstevel@tonic-gate * the LWP's latest contract. 1237c478bd9Sstevel@tonic-gate */ 1247c478bd9Sstevel@tonic-gate static int 125da6c28aaSamw ctfs_latest_open(vnode_t **vpp, int flag, cred_t *cr, caller_context_t *ct) 1267c478bd9Sstevel@tonic-gate { 1277c478bd9Sstevel@tonic-gate vnode_t *nvp; 1287c478bd9Sstevel@tonic-gate 1297c478bd9Sstevel@tonic-gate if (flag != (FREAD | FOFFMAX)) 1307c478bd9Sstevel@tonic-gate return (EINVAL); 1317c478bd9Sstevel@tonic-gate 132da6c28aaSamw if (nvp = ctfs_latest_nested_open(*vpp, cr)) { 1337c478bd9Sstevel@tonic-gate VN_RELE(*vpp); 1347c478bd9Sstevel@tonic-gate *vpp = nvp; 135da6c28aaSamw return (VOP_OPEN(vpp, flag, cr, ct)); 1367c478bd9Sstevel@tonic-gate } 1377c478bd9Sstevel@tonic-gate 1387c478bd9Sstevel@tonic-gate return (ESRCH); 1397c478bd9Sstevel@tonic-gate } 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate /* 1427c478bd9Sstevel@tonic-gate * ctfs_latest_getattr - the VOP_GETATTR entry point 1437c478bd9Sstevel@tonic-gate * 1447c478bd9Sstevel@tonic-gate * Fetches and calls VOP_GETATTR on the status file for the LWP's 1457c478bd9Sstevel@tonic-gate * latest contract. Otherwise it fakes up something bland. 1467c478bd9Sstevel@tonic-gate */ 1477c478bd9Sstevel@tonic-gate static int 148da6c28aaSamw ctfs_latest_getattr( 149da6c28aaSamw vnode_t *vp, 150da6c28aaSamw vattr_t *vap, 151da6c28aaSamw int flags, 152da6c28aaSamw cred_t *cr, 153da6c28aaSamw caller_context_t *ct) 1547c478bd9Sstevel@tonic-gate { 1557c478bd9Sstevel@tonic-gate vnode_t *nvp; 1567c478bd9Sstevel@tonic-gate 157da6c28aaSamw if (nvp = ctfs_latest_nested_open(vp, cr)) { 158da6c28aaSamw int res = VOP_GETATTR(nvp, vap, flags, cr, ct); 1597c478bd9Sstevel@tonic-gate VN_RELE(nvp); 1607c478bd9Sstevel@tonic-gate return (res); 1617c478bd9Sstevel@tonic-gate } 1627c478bd9Sstevel@tonic-gate 1637c478bd9Sstevel@tonic-gate vap->va_type = VREG; 1647c478bd9Sstevel@tonic-gate vap->va_mode = 0444; 1657c478bd9Sstevel@tonic-gate vap->va_nlink = 1; 1667c478bd9Sstevel@tonic-gate vap->va_size = 0; 1677c478bd9Sstevel@tonic-gate vap->va_ctime.tv_sec = vp->v_vfsp->vfs_mtime; 1687c478bd9Sstevel@tonic-gate vap->va_ctime.tv_nsec = 0; 1697c478bd9Sstevel@tonic-gate vap->va_atime = vap->va_mtime = vap->va_ctime; 1707c478bd9Sstevel@tonic-gate ctfs_common_getattr(vp, vap); 1717c478bd9Sstevel@tonic-gate 1727c478bd9Sstevel@tonic-gate return (0); 1737c478bd9Sstevel@tonic-gate } 1747c478bd9Sstevel@tonic-gate 1757c478bd9Sstevel@tonic-gate const fs_operation_def_t ctfs_tops_latest[] = { 176aa59c4cbSrsb { VOPNAME_OPEN, { .vop_open = ctfs_latest_open } }, 177aa59c4cbSrsb { VOPNAME_CLOSE, { .error = fs_inval } }, 178aa59c4cbSrsb { VOPNAME_IOCTL, { .error = fs_inval } }, 179aa59c4cbSrsb { VOPNAME_GETATTR, { .vop_getattr = ctfs_latest_getattr } }, 180aa59c4cbSrsb { VOPNAME_ACCESS, { .vop_access = ctfs_latest_access } }, 181aa59c4cbSrsb { VOPNAME_READDIR, { .error = fs_notdir } }, 182aa59c4cbSrsb { VOPNAME_LOOKUP, { .error = fs_notdir } }, 183aa59c4cbSrsb { VOPNAME_INACTIVE, { .vop_inactive = gfs_vop_inactive } }, 1847c478bd9Sstevel@tonic-gate { NULL, NULL } 1857c478bd9Sstevel@tonic-gate }; 186