1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 30*7c478bd9Sstevel@tonic-gate #include <sys/param.h> 31*7c478bd9Sstevel@tonic-gate #include <sys/time.h> 32*7c478bd9Sstevel@tonic-gate #include <sys/cred.h> 33*7c478bd9Sstevel@tonic-gate #include <sys/vfs.h> 34*7c478bd9Sstevel@tonic-gate #include <sys/gfs.h> 35*7c478bd9Sstevel@tonic-gate #include <sys/vnode.h> 36*7c478bd9Sstevel@tonic-gate #include <sys/systm.h> 37*7c478bd9Sstevel@tonic-gate #include <sys/errno.h> 38*7c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 39*7c478bd9Sstevel@tonic-gate #include <fs/fs_subr.h> 40*7c478bd9Sstevel@tonic-gate #include <sys/contract.h> 41*7c478bd9Sstevel@tonic-gate #include <sys/contract_impl.h> 42*7c478bd9Sstevel@tonic-gate #include <sys/ctfs.h> 43*7c478bd9Sstevel@tonic-gate #include <sys/ctfs_impl.h> 44*7c478bd9Sstevel@tonic-gate #include <sys/file.h> 45*7c478bd9Sstevel@tonic-gate 46*7c478bd9Sstevel@tonic-gate /* 47*7c478bd9Sstevel@tonic-gate * CTFS routines for the /system/contract/<type>/latest vnode. 48*7c478bd9Sstevel@tonic-gate */ 49*7c478bd9Sstevel@tonic-gate 50*7c478bd9Sstevel@tonic-gate /* 51*7c478bd9Sstevel@tonic-gate * ctfs_create_latenode 52*7c478bd9Sstevel@tonic-gate */ 53*7c478bd9Sstevel@tonic-gate vnode_t * 54*7c478bd9Sstevel@tonic-gate ctfs_create_latenode(vnode_t *pvp) 55*7c478bd9Sstevel@tonic-gate { 56*7c478bd9Sstevel@tonic-gate return (gfs_file_create(sizeof (ctfs_latenode_t), pvp, 57*7c478bd9Sstevel@tonic-gate ctfs_ops_latest)); 58*7c478bd9Sstevel@tonic-gate } 59*7c478bd9Sstevel@tonic-gate 60*7c478bd9Sstevel@tonic-gate /* 61*7c478bd9Sstevel@tonic-gate * ctfs_latest_nested_open 62*7c478bd9Sstevel@tonic-gate * 63*7c478bd9Sstevel@tonic-gate * The latest node is just a doorway to the status file; this function 64*7c478bd9Sstevel@tonic-gate * is used by ctfs_latest_access, ctfs_latest_open, and 65*7c478bd9Sstevel@tonic-gate * ctfs_latest_getattr to obtain that file. 66*7c478bd9Sstevel@tonic-gate */ 67*7c478bd9Sstevel@tonic-gate static vnode_t * 68*7c478bd9Sstevel@tonic-gate ctfs_latest_nested_open(vnode_t *vp) 69*7c478bd9Sstevel@tonic-gate { 70*7c478bd9Sstevel@tonic-gate contract_t *ct = ttolwp(curthread)->lwp_ct_latest[ 71*7c478bd9Sstevel@tonic-gate gfs_file_index(gfs_file_parent(vp))]; 72*7c478bd9Sstevel@tonic-gate 73*7c478bd9Sstevel@tonic-gate if (ct) { 74*7c478bd9Sstevel@tonic-gate vnode_t *cvp, *svp; 75*7c478bd9Sstevel@tonic-gate 76*7c478bd9Sstevel@tonic-gate cvp = ctfs_create_cdirnode(gfs_file_parent(vp), ct); 77*7c478bd9Sstevel@tonic-gate 78*7c478bd9Sstevel@tonic-gate gfs_file_set_index(cvp, -1); 79*7c478bd9Sstevel@tonic-gate 80*7c478bd9Sstevel@tonic-gate VERIFY(gfs_dir_lookup(cvp, "status", &svp) == 0); 81*7c478bd9Sstevel@tonic-gate 82*7c478bd9Sstevel@tonic-gate VN_RELE(cvp); 83*7c478bd9Sstevel@tonic-gate 84*7c478bd9Sstevel@tonic-gate return (svp); 85*7c478bd9Sstevel@tonic-gate } 86*7c478bd9Sstevel@tonic-gate 87*7c478bd9Sstevel@tonic-gate return (NULL); 88*7c478bd9Sstevel@tonic-gate } 89*7c478bd9Sstevel@tonic-gate 90*7c478bd9Sstevel@tonic-gate /* 91*7c478bd9Sstevel@tonic-gate * ctfs_latest_access - VOP_ACCESS entry point 92*7c478bd9Sstevel@tonic-gate * 93*7c478bd9Sstevel@tonic-gate * Fails if there isn't a latest contract. 94*7c478bd9Sstevel@tonic-gate */ 95*7c478bd9Sstevel@tonic-gate /* ARGSUSED */ 96*7c478bd9Sstevel@tonic-gate static int 97*7c478bd9Sstevel@tonic-gate ctfs_latest_access(vnode_t *vp, int mode, int flags, cred_t *cr) 98*7c478bd9Sstevel@tonic-gate { 99*7c478bd9Sstevel@tonic-gate vnode_t *nvp; 100*7c478bd9Sstevel@tonic-gate 101*7c478bd9Sstevel@tonic-gate if (mode & (VEXEC | VWRITE)) 102*7c478bd9Sstevel@tonic-gate return (EACCES); 103*7c478bd9Sstevel@tonic-gate 104*7c478bd9Sstevel@tonic-gate if (nvp = ctfs_latest_nested_open(vp)) { 105*7c478bd9Sstevel@tonic-gate VN_RELE(nvp); 106*7c478bd9Sstevel@tonic-gate return (0); 107*7c478bd9Sstevel@tonic-gate } 108*7c478bd9Sstevel@tonic-gate 109*7c478bd9Sstevel@tonic-gate return (ESRCH); 110*7c478bd9Sstevel@tonic-gate } 111*7c478bd9Sstevel@tonic-gate 112*7c478bd9Sstevel@tonic-gate /* 113*7c478bd9Sstevel@tonic-gate * ctfs_latest_open - VOP_OPEN entry point 114*7c478bd9Sstevel@tonic-gate * 115*7c478bd9Sstevel@tonic-gate * After checking the mode bits, opens and returns the status file for 116*7c478bd9Sstevel@tonic-gate * the LWP's latest contract. 117*7c478bd9Sstevel@tonic-gate */ 118*7c478bd9Sstevel@tonic-gate static int 119*7c478bd9Sstevel@tonic-gate ctfs_latest_open(vnode_t **vpp, int flag, cred_t *cr) 120*7c478bd9Sstevel@tonic-gate { 121*7c478bd9Sstevel@tonic-gate vnode_t *nvp; 122*7c478bd9Sstevel@tonic-gate 123*7c478bd9Sstevel@tonic-gate if (flag != (FREAD | FOFFMAX)) 124*7c478bd9Sstevel@tonic-gate return (EINVAL); 125*7c478bd9Sstevel@tonic-gate 126*7c478bd9Sstevel@tonic-gate if (nvp = ctfs_latest_nested_open(*vpp)) { 127*7c478bd9Sstevel@tonic-gate VN_RELE(*vpp); 128*7c478bd9Sstevel@tonic-gate *vpp = nvp; 129*7c478bd9Sstevel@tonic-gate return (VOP_OPEN(vpp, flag, cr)); 130*7c478bd9Sstevel@tonic-gate } 131*7c478bd9Sstevel@tonic-gate 132*7c478bd9Sstevel@tonic-gate return (ESRCH); 133*7c478bd9Sstevel@tonic-gate } 134*7c478bd9Sstevel@tonic-gate 135*7c478bd9Sstevel@tonic-gate /* 136*7c478bd9Sstevel@tonic-gate * ctfs_latest_getattr - the VOP_GETATTR entry point 137*7c478bd9Sstevel@tonic-gate * 138*7c478bd9Sstevel@tonic-gate * Fetches and calls VOP_GETATTR on the status file for the LWP's 139*7c478bd9Sstevel@tonic-gate * latest contract. Otherwise it fakes up something bland. 140*7c478bd9Sstevel@tonic-gate */ 141*7c478bd9Sstevel@tonic-gate static int 142*7c478bd9Sstevel@tonic-gate ctfs_latest_getattr(vnode_t *vp, vattr_t *vap, int flags, cred_t *cr) 143*7c478bd9Sstevel@tonic-gate { 144*7c478bd9Sstevel@tonic-gate vnode_t *nvp; 145*7c478bd9Sstevel@tonic-gate 146*7c478bd9Sstevel@tonic-gate if (nvp = ctfs_latest_nested_open(vp)) { 147*7c478bd9Sstevel@tonic-gate int res = VOP_GETATTR(nvp, vap, flags, cr); 148*7c478bd9Sstevel@tonic-gate VN_RELE(nvp); 149*7c478bd9Sstevel@tonic-gate return (res); 150*7c478bd9Sstevel@tonic-gate } 151*7c478bd9Sstevel@tonic-gate 152*7c478bd9Sstevel@tonic-gate vap->va_type = VREG; 153*7c478bd9Sstevel@tonic-gate vap->va_mode = 0444; 154*7c478bd9Sstevel@tonic-gate vap->va_nlink = 1; 155*7c478bd9Sstevel@tonic-gate vap->va_size = 0; 156*7c478bd9Sstevel@tonic-gate vap->va_ctime.tv_sec = vp->v_vfsp->vfs_mtime; 157*7c478bd9Sstevel@tonic-gate vap->va_ctime.tv_nsec = 0; 158*7c478bd9Sstevel@tonic-gate vap->va_atime = vap->va_mtime = vap->va_ctime; 159*7c478bd9Sstevel@tonic-gate ctfs_common_getattr(vp, vap); 160*7c478bd9Sstevel@tonic-gate 161*7c478bd9Sstevel@tonic-gate return (0); 162*7c478bd9Sstevel@tonic-gate } 163*7c478bd9Sstevel@tonic-gate 164*7c478bd9Sstevel@tonic-gate const fs_operation_def_t ctfs_tops_latest[] = { 165*7c478bd9Sstevel@tonic-gate { VOPNAME_OPEN, ctfs_latest_open }, 166*7c478bd9Sstevel@tonic-gate { VOPNAME_CLOSE, fs_inval }, 167*7c478bd9Sstevel@tonic-gate { VOPNAME_IOCTL, fs_inval }, 168*7c478bd9Sstevel@tonic-gate { VOPNAME_GETATTR, ctfs_latest_getattr }, 169*7c478bd9Sstevel@tonic-gate { VOPNAME_ACCESS, ctfs_latest_access }, 170*7c478bd9Sstevel@tonic-gate { VOPNAME_READDIR, fs_notdir }, 171*7c478bd9Sstevel@tonic-gate { VOPNAME_LOOKUP, fs_notdir }, 172*7c478bd9Sstevel@tonic-gate { VOPNAME_INACTIVE, (fs_generic_func_p) gfs_vop_inactive }, 173*7c478bd9Sstevel@tonic-gate { NULL, NULL } 174*7c478bd9Sstevel@tonic-gate }; 175