zfs_znode.c revision 241628
1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd/* 22219089Spjd * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23240415Smm * Copyright (c) 2012 by Delphix. All rights reserved. 24168404Spjd */ 25168404Spjd 26169195Spjd/* Portions Copyright 2007 Jeremy Teo */ 27226732Smm/* Portions Copyright 2011 Martin Matuska <mm@FreeBSD.org> */ 28169195Spjd 29168404Spjd#ifdef _KERNEL 30168404Spjd#include <sys/types.h> 31168404Spjd#include <sys/param.h> 32168404Spjd#include <sys/time.h> 33168404Spjd#include <sys/systm.h> 34168404Spjd#include <sys/sysmacros.h> 35168404Spjd#include <sys/resource.h> 36168404Spjd#include <sys/mntent.h> 37185029Spjd#include <sys/u8_textprep.h> 38185029Spjd#include <sys/dsl_dataset.h> 39168404Spjd#include <sys/vfs.h> 40168404Spjd#include <sys/vnode.h> 41168404Spjd#include <sys/file.h> 42168404Spjd#include <sys/kmem.h> 43168404Spjd#include <sys/errno.h> 44168404Spjd#include <sys/unistd.h> 45168404Spjd#include <sys/atomic.h> 46168404Spjd#include <sys/zfs_dir.h> 47168404Spjd#include <sys/zfs_acl.h> 48168404Spjd#include <sys/zfs_ioctl.h> 49168404Spjd#include <sys/zfs_rlock.h> 50185029Spjd#include <sys/zfs_fuid.h> 51219089Spjd#include <sys/dnode.h> 52168404Spjd#include <sys/fs/zfs.h> 53185029Spjd#include <sys/kidmap.h> 54168404Spjd#endif /* _KERNEL */ 55168404Spjd 56168404Spjd#include <sys/dmu.h> 57168404Spjd#include <sys/refcount.h> 58168404Spjd#include <sys/stat.h> 59168404Spjd#include <sys/zap.h> 60168404Spjd#include <sys/zfs_znode.h> 61219089Spjd#include <sys/sa.h> 62219089Spjd#include <sys/zfs_sa.h> 63219089Spjd#include <sys/zfs_stat.h> 64168404Spjd#include <sys/refcount.h> 65168404Spjd 66185029Spjd#include "zfs_prop.h" 67219089Spjd#include "zfs_comutil.h" 68185029Spjd 69173268Slulf/* Used by fstat(1). */ 70173268SlulfSYSCTL_INT(_debug_sizeof, OID_AUTO, znode, CTLFLAG_RD, 0, sizeof(znode_t), 71173268Slulf "sizeof(znode_t)"); 72173268Slulf 73168404Spjd/* 74185029Spjd * Define ZNODE_STATS to turn on statistic gathering. By default, it is only 75185029Spjd * turned on when DEBUG is also defined. 76185029Spjd */ 77185029Spjd#ifdef DEBUG 78185029Spjd#define ZNODE_STATS 79185029Spjd#endif /* DEBUG */ 80185029Spjd 81185029Spjd#ifdef ZNODE_STATS 82185029Spjd#define ZNODE_STAT_ADD(stat) ((stat)++) 83185029Spjd#else 84185029Spjd#define ZNODE_STAT_ADD(stat) /* nothing */ 85185029Spjd#endif /* ZNODE_STATS */ 86185029Spjd 87185029Spjd/* 88168404Spjd * Functions needed for userland (ie: libzpool) are not put under 89168404Spjd * #ifdef_KERNEL; the rest of the functions have dependencies 90168404Spjd * (such as VFS logic) that will not compile easily in userland. 91168404Spjd */ 92168404Spjd#ifdef _KERNEL 93210470Smm/* 94210470Smm * Needed to close a small window in zfs_znode_move() that allows the zfsvfs to 95210470Smm * be freed before it can be safely accessed. 96210470Smm */ 97210470Smmkrwlock_t zfsvfs_lock; 98210470Smm 99185029Spjdstatic kmem_cache_t *znode_cache = NULL; 100168404Spjd 101168404Spjd/*ARGSUSED*/ 102168404Spjdstatic void 103185029Spjdznode_evict_error(dmu_buf_t *dbuf, void *user_ptr) 104168404Spjd{ 105185029Spjd /* 106185029Spjd * We should never drop all dbuf refs without first clearing 107185029Spjd * the eviction callback. 108185029Spjd */ 109185029Spjd panic("evicting znode %p\n", user_ptr); 110168404Spjd} 111168404Spjd 112168404Spjdextern struct vop_vector zfs_vnodeops; 113168404Spjdextern struct vop_vector zfs_fifoops; 114209962Smmextern struct vop_vector zfs_shareops; 115168404Spjd 116168404Spjd/* 117168404Spjd * XXX: We cannot use this function as a cache constructor, because 118168404Spjd * there is one global cache for all file systems and we need 119168404Spjd * to pass vfsp here, which is not possible, because argument 120168404Spjd * 'cdrarg' is defined at kmem_cache_create() time. 121168404Spjd */ 122219089Spjd/*ARGSUSED*/ 123168404Spjdstatic int 124185029Spjdzfs_znode_cache_constructor(void *buf, void *arg, int kmflags) 125168404Spjd{ 126168404Spjd znode_t *zp = buf; 127169196Spjd vnode_t *vp; 128185029Spjd vfs_t *vfsp = arg; 129168404Spjd int error; 130168404Spjd 131185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 132185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 133185029Spjd 134199156Spjd if (vfsp != NULL) { 135199156Spjd error = getnewvnode("zfs", vfsp, &zfs_vnodeops, &vp); 136199156Spjd if (error != 0 && (kmflags & KM_NOSLEEP)) 137199156Spjd return (-1); 138199156Spjd ASSERT(error == 0); 139199156Spjd vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 140199156Spjd zp->z_vnode = vp; 141199156Spjd vp->v_data = (caddr_t)zp; 142199156Spjd VN_LOCK_AREC(vp); 143219089Spjd VN_LOCK_ASHARE(vp); 144199156Spjd } else { 145199156Spjd zp->z_vnode = NULL; 146199156Spjd } 147185029Spjd 148185029Spjd list_link_init(&zp->z_link_node); 149185029Spjd 150168404Spjd mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); 151168404Spjd rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); 152168404Spjd rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); 153168404Spjd mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); 154168404Spjd 155168404Spjd mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); 156168404Spjd avl_create(&zp->z_range_avl, zfs_range_compare, 157168404Spjd sizeof (rl_t), offsetof(rl_t, r_node)); 158168404Spjd 159185029Spjd zp->z_dirlocks = NULL; 160211932Smm zp->z_acl_cached = NULL; 161219089Spjd zp->z_moved = 0; 162168404Spjd return (0); 163168404Spjd} 164168404Spjd 165168404Spjd/*ARGSUSED*/ 166168404Spjdstatic void 167185029Spjdzfs_znode_cache_destructor(void *buf, void *arg) 168168404Spjd{ 169168404Spjd znode_t *zp = buf; 170168404Spjd 171185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 172185029Spjd ASSERT(ZTOV(zp) == NULL); 173185029Spjd vn_free(ZTOV(zp)); 174185029Spjd ASSERT(!list_link_active(&zp->z_link_node)); 175168404Spjd mutex_destroy(&zp->z_lock); 176168404Spjd rw_destroy(&zp->z_parent_lock); 177168404Spjd rw_destroy(&zp->z_name_lock); 178168404Spjd mutex_destroy(&zp->z_acl_lock); 179185029Spjd avl_destroy(&zp->z_range_avl); 180168404Spjd mutex_destroy(&zp->z_range_lock); 181168404Spjd 182185029Spjd ASSERT(zp->z_dirlocks == NULL); 183211932Smm ASSERT(zp->z_acl_cached == NULL); 184168404Spjd} 185168404Spjd 186185029Spjd#ifdef ZNODE_STATS 187185029Spjdstatic struct { 188185029Spjd uint64_t zms_zfsvfs_invalid; 189210470Smm uint64_t zms_zfsvfs_recheck1; 190185029Spjd uint64_t zms_zfsvfs_unmounted; 191210470Smm uint64_t zms_zfsvfs_recheck2; 192185029Spjd uint64_t zms_obj_held; 193185029Spjd uint64_t zms_vnode_locked; 194185029Spjd uint64_t zms_not_only_dnlc; 195185029Spjd} znode_move_stats; 196185029Spjd#endif /* ZNODE_STATS */ 197185029Spjd 198219089Spjd#ifdef sun 199185029Spjdstatic void 200185029Spjdzfs_znode_move_impl(znode_t *ozp, znode_t *nzp) 201185029Spjd{ 202185029Spjd vnode_t *vp; 203185029Spjd 204185029Spjd /* Copy fields. */ 205185029Spjd nzp->z_zfsvfs = ozp->z_zfsvfs; 206185029Spjd 207185029Spjd /* Swap vnodes. */ 208185029Spjd vp = nzp->z_vnode; 209185029Spjd nzp->z_vnode = ozp->z_vnode; 210185029Spjd ozp->z_vnode = vp; /* let destructor free the overwritten vnode */ 211185029Spjd ZTOV(ozp)->v_data = ozp; 212185029Spjd ZTOV(nzp)->v_data = nzp; 213185029Spjd 214185029Spjd nzp->z_id = ozp->z_id; 215185029Spjd ASSERT(ozp->z_dirlocks == NULL); /* znode not in use */ 216185029Spjd ASSERT(avl_numnodes(&ozp->z_range_avl) == 0); 217185029Spjd nzp->z_unlinked = ozp->z_unlinked; 218185029Spjd nzp->z_atime_dirty = ozp->z_atime_dirty; 219185029Spjd nzp->z_zn_prefetch = ozp->z_zn_prefetch; 220185029Spjd nzp->z_blksz = ozp->z_blksz; 221185029Spjd nzp->z_seq = ozp->z_seq; 222185029Spjd nzp->z_mapcnt = ozp->z_mapcnt; 223185029Spjd nzp->z_gen = ozp->z_gen; 224185029Spjd nzp->z_sync_cnt = ozp->z_sync_cnt; 225219089Spjd nzp->z_is_sa = ozp->z_is_sa; 226219089Spjd nzp->z_sa_hdl = ozp->z_sa_hdl; 227219089Spjd bcopy(ozp->z_atime, nzp->z_atime, sizeof (uint64_t) * 2); 228219089Spjd nzp->z_links = ozp->z_links; 229219089Spjd nzp->z_size = ozp->z_size; 230219089Spjd nzp->z_pflags = ozp->z_pflags; 231219089Spjd nzp->z_uid = ozp->z_uid; 232219089Spjd nzp->z_gid = ozp->z_gid; 233219089Spjd nzp->z_mode = ozp->z_mode; 234185029Spjd 235211932Smm /* 236211932Smm * Since this is just an idle znode and kmem is already dealing with 237211932Smm * memory pressure, release any cached ACL. 238211932Smm */ 239211932Smm if (ozp->z_acl_cached) { 240211932Smm zfs_acl_free(ozp->z_acl_cached); 241211932Smm ozp->z_acl_cached = NULL; 242211932Smm } 243211932Smm 244219089Spjd sa_set_userp(nzp->z_sa_hdl, nzp); 245185029Spjd 246185029Spjd /* 247185029Spjd * Invalidate the original znode by clearing fields that provide a 248185029Spjd * pointer back to the znode. Set the low bit of the vfs pointer to 249185029Spjd * ensure that zfs_znode_move() recognizes the znode as invalid in any 250185029Spjd * subsequent callback. 251185029Spjd */ 252219089Spjd ozp->z_sa_hdl = NULL; 253185029Spjd POINTER_INVALIDATE(&ozp->z_zfsvfs); 254219089Spjd 255219089Spjd /* 256219089Spjd * Mark the znode. 257219089Spjd */ 258219089Spjd nzp->z_moved = 1; 259219089Spjd ozp->z_moved = (uint8_t)-1; 260185029Spjd} 261185029Spjd 262185029Spjd/*ARGSUSED*/ 263185029Spjdstatic kmem_cbrc_t 264185029Spjdzfs_znode_move(void *buf, void *newbuf, size_t size, void *arg) 265185029Spjd{ 266185029Spjd znode_t *ozp = buf, *nzp = newbuf; 267185029Spjd zfsvfs_t *zfsvfs; 268185029Spjd vnode_t *vp; 269185029Spjd 270185029Spjd /* 271185029Spjd * The znode is on the file system's list of known znodes if the vfs 272185029Spjd * pointer is valid. We set the low bit of the vfs pointer when freeing 273185029Spjd * the znode to invalidate it, and the memory patterns written by kmem 274185029Spjd * (baddcafe and deadbeef) set at least one of the two low bits. A newly 275185029Spjd * created znode sets the vfs pointer last of all to indicate that the 276185029Spjd * znode is known and in a valid state to be moved by this function. 277185029Spjd */ 278185029Spjd zfsvfs = ozp->z_zfsvfs; 279185029Spjd if (!POINTER_IS_VALID(zfsvfs)) { 280185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_invalid); 281185029Spjd return (KMEM_CBRC_DONT_KNOW); 282185029Spjd } 283185029Spjd 284185029Spjd /* 285210470Smm * Close a small window in which it's possible that the filesystem could 286210470Smm * be unmounted and freed, and zfsvfs, though valid in the previous 287210470Smm * statement, could point to unrelated memory by the time we try to 288210470Smm * prevent the filesystem from being unmounted. 289185029Spjd */ 290210470Smm rw_enter(&zfsvfs_lock, RW_WRITER); 291210470Smm if (zfsvfs != ozp->z_zfsvfs) { 292210470Smm rw_exit(&zfsvfs_lock); 293210470Smm ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck1); 294210470Smm return (KMEM_CBRC_DONT_KNOW); 295210470Smm } 296210470Smm 297210470Smm /* 298210470Smm * If the znode is still valid, then so is the file system. We know that 299210470Smm * no valid file system can be freed while we hold zfsvfs_lock, so we 300210470Smm * can safely ensure that the filesystem is not and will not be 301210470Smm * unmounted. The next statement is equivalent to ZFS_ENTER(). 302210470Smm */ 303209962Smm rrw_enter(&zfsvfs->z_teardown_lock, RW_READER, FTAG); 304209962Smm if (zfsvfs->z_unmounted) { 305209962Smm ZFS_EXIT(zfsvfs); 306210470Smm rw_exit(&zfsvfs_lock); 307185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_unmounted); 308185029Spjd return (KMEM_CBRC_DONT_KNOW); 309185029Spjd } 310210470Smm rw_exit(&zfsvfs_lock); 311185029Spjd 312185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 313185029Spjd /* 314185029Spjd * Recheck the vfs pointer in case the znode was removed just before 315185029Spjd * acquiring the lock. 316185029Spjd */ 317185029Spjd if (zfsvfs != ozp->z_zfsvfs) { 318185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 319185029Spjd ZFS_EXIT(zfsvfs); 320210470Smm ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck2); 321185029Spjd return (KMEM_CBRC_DONT_KNOW); 322185029Spjd } 323185029Spjd 324185029Spjd /* 325185029Spjd * At this point we know that as long as we hold z_znodes_lock, the 326185029Spjd * znode cannot be freed and fields within the znode can be safely 327185029Spjd * accessed. Now, prevent a race with zfs_zget(). 328185029Spjd */ 329185029Spjd if (ZFS_OBJ_HOLD_TRYENTER(zfsvfs, ozp->z_id) == 0) { 330185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 331185029Spjd ZFS_EXIT(zfsvfs); 332185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_obj_held); 333185029Spjd return (KMEM_CBRC_LATER); 334185029Spjd } 335185029Spjd 336185029Spjd vp = ZTOV(ozp); 337185029Spjd if (mutex_tryenter(&vp->v_lock) == 0) { 338185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 339185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 340185029Spjd ZFS_EXIT(zfsvfs); 341185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_vnode_locked); 342185029Spjd return (KMEM_CBRC_LATER); 343185029Spjd } 344185029Spjd 345185029Spjd /* Only move znodes that are referenced _only_ by the DNLC. */ 346185029Spjd if (vp->v_count != 1 || !vn_in_dnlc(vp)) { 347185029Spjd mutex_exit(&vp->v_lock); 348185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 349185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 350185029Spjd ZFS_EXIT(zfsvfs); 351185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_not_only_dnlc); 352185029Spjd return (KMEM_CBRC_LATER); 353185029Spjd } 354185029Spjd 355185029Spjd /* 356185029Spjd * The znode is known and in a valid state to move. We're holding the 357185029Spjd * locks needed to execute the critical section. 358185029Spjd */ 359185029Spjd zfs_znode_move_impl(ozp, nzp); 360185029Spjd mutex_exit(&vp->v_lock); 361185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 362185029Spjd 363185029Spjd list_link_replace(&ozp->z_link_node, &nzp->z_link_node); 364185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 365185029Spjd ZFS_EXIT(zfsvfs); 366185029Spjd 367185029Spjd return (KMEM_CBRC_YES); 368185029Spjd} 369185029Spjd#endif /* sun */ 370185029Spjd 371168404Spjdvoid 372168404Spjdzfs_znode_init(void) 373168404Spjd{ 374168404Spjd /* 375168404Spjd * Initialize zcache 376168404Spjd */ 377210470Smm rw_init(&zfsvfs_lock, NULL, RW_DEFAULT, NULL); 378168404Spjd ASSERT(znode_cache == NULL); 379168404Spjd znode_cache = kmem_cache_create("zfs_znode_cache", 380168404Spjd sizeof (znode_t), 0, /* zfs_znode_cache_constructor */ NULL, 381168404Spjd zfs_znode_cache_destructor, NULL, NULL, NULL, 0); 382185029Spjd kmem_cache_set_move(znode_cache, zfs_znode_move); 383168404Spjd} 384168404Spjd 385168404Spjdvoid 386168404Spjdzfs_znode_fini(void) 387168404Spjd{ 388219089Spjd#ifdef sun 389168404Spjd /* 390219089Spjd * Cleanup vfs & vnode ops 391219089Spjd */ 392219089Spjd zfs_remove_op_tables(); 393219089Spjd#endif /* sun */ 394219089Spjd 395219089Spjd /* 396168404Spjd * Cleanup zcache 397168404Spjd */ 398168404Spjd if (znode_cache) 399168404Spjd kmem_cache_destroy(znode_cache); 400168404Spjd znode_cache = NULL; 401210470Smm rw_destroy(&zfsvfs_lock); 402168404Spjd} 403168404Spjd 404219089Spjd#ifdef sun 405219089Spjdstruct vnodeops *zfs_dvnodeops; 406219089Spjdstruct vnodeops *zfs_fvnodeops; 407219089Spjdstruct vnodeops *zfs_symvnodeops; 408219089Spjdstruct vnodeops *zfs_xdvnodeops; 409219089Spjdstruct vnodeops *zfs_evnodeops; 410219089Spjdstruct vnodeops *zfs_sharevnodeops; 411219089Spjd 412219089Spjdvoid 413219089Spjdzfs_remove_op_tables() 414219089Spjd{ 415219089Spjd /* 416219089Spjd * Remove vfs ops 417219089Spjd */ 418219089Spjd ASSERT(zfsfstype); 419219089Spjd (void) vfs_freevfsops_by_type(zfsfstype); 420219089Spjd zfsfstype = 0; 421219089Spjd 422219089Spjd /* 423219089Spjd * Remove vnode ops 424219089Spjd */ 425219089Spjd if (zfs_dvnodeops) 426219089Spjd vn_freevnodeops(zfs_dvnodeops); 427219089Spjd if (zfs_fvnodeops) 428219089Spjd vn_freevnodeops(zfs_fvnodeops); 429219089Spjd if (zfs_symvnodeops) 430219089Spjd vn_freevnodeops(zfs_symvnodeops); 431219089Spjd if (zfs_xdvnodeops) 432219089Spjd vn_freevnodeops(zfs_xdvnodeops); 433219089Spjd if (zfs_evnodeops) 434219089Spjd vn_freevnodeops(zfs_evnodeops); 435219089Spjd if (zfs_sharevnodeops) 436219089Spjd vn_freevnodeops(zfs_sharevnodeops); 437219089Spjd 438219089Spjd zfs_dvnodeops = NULL; 439219089Spjd zfs_fvnodeops = NULL; 440219089Spjd zfs_symvnodeops = NULL; 441219089Spjd zfs_xdvnodeops = NULL; 442219089Spjd zfs_evnodeops = NULL; 443219089Spjd zfs_sharevnodeops = NULL; 444219089Spjd} 445219089Spjd 446219089Spjdextern const fs_operation_def_t zfs_dvnodeops_template[]; 447219089Spjdextern const fs_operation_def_t zfs_fvnodeops_template[]; 448219089Spjdextern const fs_operation_def_t zfs_xdvnodeops_template[]; 449219089Spjdextern const fs_operation_def_t zfs_symvnodeops_template[]; 450219089Spjdextern const fs_operation_def_t zfs_evnodeops_template[]; 451219089Spjdextern const fs_operation_def_t zfs_sharevnodeops_template[]; 452219089Spjd 453168404Spjdint 454219089Spjdzfs_create_op_tables() 455219089Spjd{ 456219089Spjd int error; 457219089Spjd 458219089Spjd /* 459219089Spjd * zfs_dvnodeops can be set if mod_remove() calls mod_installfs() 460219089Spjd * due to a failure to remove the the 2nd modlinkage (zfs_modldrv). 461219089Spjd * In this case we just return as the ops vectors are already set up. 462219089Spjd */ 463219089Spjd if (zfs_dvnodeops) 464219089Spjd return (0); 465219089Spjd 466219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_dvnodeops_template, 467219089Spjd &zfs_dvnodeops); 468219089Spjd if (error) 469219089Spjd return (error); 470219089Spjd 471219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_fvnodeops_template, 472219089Spjd &zfs_fvnodeops); 473219089Spjd if (error) 474219089Spjd return (error); 475219089Spjd 476219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_symvnodeops_template, 477219089Spjd &zfs_symvnodeops); 478219089Spjd if (error) 479219089Spjd return (error); 480219089Spjd 481219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_xdvnodeops_template, 482219089Spjd &zfs_xdvnodeops); 483219089Spjd if (error) 484219089Spjd return (error); 485219089Spjd 486219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_evnodeops_template, 487219089Spjd &zfs_evnodeops); 488219089Spjd if (error) 489219089Spjd return (error); 490219089Spjd 491219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_sharevnodeops_template, 492219089Spjd &zfs_sharevnodeops); 493219089Spjd 494219089Spjd return (error); 495219089Spjd} 496219089Spjd#endif /* sun */ 497219089Spjd 498219089Spjdint 499209962Smmzfs_create_share_dir(zfsvfs_t *zfsvfs, dmu_tx_t *tx) 500168404Spjd{ 501209962Smm zfs_acl_ids_t acl_ids; 502209962Smm vattr_t vattr; 503209962Smm znode_t *sharezp; 504209962Smm vnode_t *vp, vnode; 505209962Smm znode_t *zp; 506209962Smm int error; 507168404Spjd 508209962Smm vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 509209962Smm vattr.va_type = VDIR; 510209962Smm vattr.va_mode = S_IFDIR|0555; 511209962Smm vattr.va_uid = crgetuid(kcred); 512209962Smm vattr.va_gid = crgetgid(kcred); 513168404Spjd 514209962Smm sharezp = kmem_cache_alloc(znode_cache, KM_SLEEP); 515209962Smm zfs_znode_cache_constructor(sharezp, zfsvfs->z_parent->z_vfs, 0); 516219089Spjd ASSERT(!POINTER_IS_VALID(sharezp->z_zfsvfs)); 517219089Spjd sharezp->z_moved = 0; 518209962Smm sharezp->z_unlinked = 0; 519209962Smm sharezp->z_atime_dirty = 0; 520209962Smm sharezp->z_zfsvfs = zfsvfs; 521219089Spjd sharezp->z_is_sa = zfsvfs->z_use_sa; 522168404Spjd 523209962Smm sharezp->z_vnode = &vnode; 524209962Smm vnode.v_data = sharezp; 525185029Spjd 526209962Smm vp = ZTOV(sharezp); 527209962Smm vp->v_type = VDIR; 528168404Spjd 529209962Smm VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, 530209962Smm kcred, NULL, &acl_ids)); 531219089Spjd zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); 532209962Smm ASSERT3P(zp, ==, sharezp); 533209962Smm POINTER_INVALIDATE(&sharezp->z_zfsvfs); 534209962Smm error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, 535209962Smm ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); 536209962Smm zfsvfs->z_shares_dir = sharezp->z_id; 537168404Spjd 538209962Smm zfs_acl_ids_free(&acl_ids); 539209962Smm ZTOV(sharezp)->v_data = NULL; 540209962Smm ZTOV(sharezp)->v_count = 0; 541209962Smm ZTOV(sharezp)->v_holdcnt = 0; 542209962Smm zp->z_vnode = NULL; 543219089Spjd sa_handle_destroy(sharezp->z_sa_hdl); 544209962Smm sharezp->z_vnode = NULL; 545209962Smm kmem_cache_free(znode_cache, sharezp); 546168404Spjd 547209962Smm return (error); 548168404Spjd} 549168404Spjd 550168404Spjd/* 551168404Spjd * define a couple of values we need available 552168404Spjd * for both 64 and 32 bit environments. 553168404Spjd */ 554168404Spjd#ifndef NBITSMINOR64 555168404Spjd#define NBITSMINOR64 32 556168404Spjd#endif 557168404Spjd#ifndef MAXMAJ64 558168404Spjd#define MAXMAJ64 0xffffffffUL 559168404Spjd#endif 560168404Spjd#ifndef MAXMIN64 561168404Spjd#define MAXMIN64 0xffffffffUL 562168404Spjd#endif 563168404Spjd 564168404Spjd/* 565168404Spjd * Create special expldev for ZFS private use. 566168404Spjd * Can't use standard expldev since it doesn't do 567168404Spjd * what we want. The standard expldev() takes a 568168404Spjd * dev32_t in LP64 and expands it to a long dev_t. 569168404Spjd * We need an interface that takes a dev32_t in ILP32 570168404Spjd * and expands it to a long dev_t. 571168404Spjd */ 572168404Spjdstatic uint64_t 573168404Spjdzfs_expldev(dev_t dev) 574168404Spjd{ 575187830Sed return (((uint64_t)major(dev) << NBITSMINOR64) | minor(dev)); 576168404Spjd} 577168404Spjd/* 578168404Spjd * Special cmpldev for ZFS private use. 579168404Spjd * Can't use standard cmpldev since it takes 580168404Spjd * a long dev_t and compresses it to dev32_t in 581168404Spjd * LP64. We need to do a compaction of a long dev_t 582168404Spjd * to a dev32_t in ILP32. 583168404Spjd */ 584168404Spjddev_t 585168404Spjdzfs_cmpldev(uint64_t dev) 586168404Spjd{ 587168958Spjd return (makedev((dev >> NBITSMINOR64), (dev & MAXMIN64))); 588168404Spjd} 589168404Spjd 590185029Spjdstatic void 591219089Spjdzfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp, 592219089Spjd dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) 593185029Spjd{ 594185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs) || (zfsvfs == zp->z_zfsvfs)); 595185029Spjd ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zfsvfs, zp->z_id))); 596185029Spjd 597185029Spjd mutex_enter(&zp->z_lock); 598185029Spjd 599219089Spjd ASSERT(zp->z_sa_hdl == NULL); 600211932Smm ASSERT(zp->z_acl_cached == NULL); 601219089Spjd if (sa_hdl == NULL) { 602219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, zp, 603219089Spjd SA_HDL_SHARED, &zp->z_sa_hdl)); 604219089Spjd } else { 605219089Spjd zp->z_sa_hdl = sa_hdl; 606219089Spjd sa_set_userp(sa_hdl, zp); 607219089Spjd } 608185029Spjd 609219089Spjd zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; 610185029Spjd 611185029Spjd /* 612185029Spjd * Slap on VROOT if we are the root znode 613185029Spjd */ 614185029Spjd if (zp->z_id == zfsvfs->z_root) 615185029Spjd ZTOV(zp)->v_flag |= VROOT; 616185029Spjd 617185029Spjd mutex_exit(&zp->z_lock); 618185029Spjd vn_exists(ZTOV(zp)); 619185029Spjd} 620185029Spjd 621185029Spjdvoid 622185029Spjdzfs_znode_dmu_fini(znode_t *zp) 623185029Spjd{ 624185029Spjd ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zp->z_zfsvfs, zp->z_id)) || 625185029Spjd zp->z_unlinked || 626185029Spjd RW_WRITE_HELD(&zp->z_zfsvfs->z_teardown_inactive_lock)); 627219089Spjd 628219089Spjd sa_handle_destroy(zp->z_sa_hdl); 629219089Spjd zp->z_sa_hdl = NULL; 630185029Spjd} 631185029Spjd 632225153Spjdstatic void 633225153Spjdzfs_vnode_forget(vnode_t *vp) 634225153Spjd{ 635225153Spjd 636225153Spjd VOP_UNLOCK(vp, 0); 637225153Spjd VI_LOCK(vp); 638225153Spjd vp->v_usecount--; 639225153Spjd vp->v_iflag |= VI_DOOMED; 640225153Spjd vp->v_data = NULL; 641225153Spjd vdropl(vp); 642225153Spjd} 643225153Spjd 644168404Spjd/* 645168404Spjd * Construct a new znode/vnode and intialize. 646168404Spjd * 647168404Spjd * This does not do a call to dmu_set_user() that is 648168404Spjd * up to the caller to do, in case you don't want to 649168404Spjd * return the znode 650168404Spjd */ 651168404Spjdstatic znode_t * 652219089Spjdzfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, int blksz, 653219089Spjd dmu_object_type_t obj_type, sa_handle_t *hdl) 654168404Spjd{ 655168404Spjd znode_t *zp; 656168404Spjd vnode_t *vp; 657219089Spjd uint64_t mode; 658219089Spjd uint64_t parent; 659219089Spjd sa_bulk_attr_t bulk[9]; 660219089Spjd int count = 0; 661168404Spjd 662168404Spjd zp = kmem_cache_alloc(znode_cache, KM_SLEEP); 663185029Spjd zfs_znode_cache_constructor(zp, zfsvfs->z_parent->z_vfs, 0); 664168404Spjd 665168404Spjd ASSERT(zp->z_dirlocks == NULL); 666185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 667219089Spjd zp->z_moved = 0; 668168404Spjd 669185029Spjd /* 670185029Spjd * Defer setting z_zfsvfs until the znode is ready to be a candidate for 671185029Spjd * the zfs_znode_move() callback. 672185029Spjd */ 673219089Spjd zp->z_sa_hdl = NULL; 674168404Spjd zp->z_unlinked = 0; 675168404Spjd zp->z_atime_dirty = 0; 676168404Spjd zp->z_mapcnt = 0; 677185029Spjd zp->z_id = db->db_object; 678168404Spjd zp->z_blksz = blksz; 679168404Spjd zp->z_seq = 0x7A4653; 680168404Spjd zp->z_sync_cnt = 0; 681168404Spjd 682185029Spjd vp = ZTOV(zp); 683168404Spjd 684219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl); 685185029Spjd 686219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); 687219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, &zp->z_gen, 8); 688219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 689219089Spjd &zp->z_size, 8); 690219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 691219089Spjd &zp->z_links, 8); 692219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 693219089Spjd &zp->z_pflags, 8); 694219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); 695219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 696219089Spjd &zp->z_atime, 16); 697219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 698219089Spjd &zp->z_uid, 8); 699219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 700219089Spjd &zp->z_gid, 8); 701185029Spjd 702219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { 703219089Spjd if (hdl == NULL) 704219089Spjd sa_handle_destroy(zp->z_sa_hdl); 705225153Spjd zfs_vnode_forget(vp); 706225153Spjd zp->z_vnode = NULL; 707219089Spjd kmem_cache_free(znode_cache, zp); 708219089Spjd return (NULL); 709219089Spjd } 710168404Spjd 711219089Spjd zp->z_mode = mode; 712219089Spjd 713219089Spjd vp->v_type = IFTOVT((mode_t)mode); 714219089Spjd 715168404Spjd switch (vp->v_type) { 716168404Spjd case VDIR: 717168404Spjd zp->z_zn_prefetch = B_TRUE; /* z_prefetch default is enabled */ 718168404Spjd break; 719224251Sdelphij#ifdef sun 720224231Sdelphij case VBLK: 721224231Sdelphij case VCHR: 722224231Sdelphij { 723224231Sdelphij uint64_t rdev; 724224231Sdelphij VERIFY(sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zfsvfs), 725224231Sdelphij &rdev, sizeof (rdev)) == 0); 726224231Sdelphij 727224251Sdelphij vp->v_rdev = zfs_cmpldev(rdev); 728224231Sdelphij } 729224231Sdelphij break; 730224251Sdelphij#endif /* sun */ 731168404Spjd case VFIFO: 732224252Sdelphij#ifdef sun 733224252Sdelphij case VSOCK: 734224252Sdelphij case VDOOR: 735224252Sdelphij#endif /* sun */ 736168404Spjd vp->v_op = &zfs_fifoops; 737168404Spjd break; 738219089Spjd case VREG: 739219089Spjd if (parent == zfsvfs->z_shares_dir) { 740219089Spjd ASSERT(zp->z_uid == 0 && zp->z_gid == 0); 741209962Smm vp->v_op = &zfs_shareops; 742209962Smm } 743209962Smm break; 744224252Sdelphij#ifdef sun 745224252Sdelphij case VLNK: 746224252Sdelphij vn_setops(vp, zfs_symvnodeops); 747224252Sdelphij break; 748224252Sdelphij default: 749224252Sdelphij vn_setops(vp, zfs_evnodeops); 750224252Sdelphij break; 751224252Sdelphij#endif /* sun */ 752168404Spjd } 753210172Sjhb if (vp->v_type != VFIFO) 754189696Sjhb VN_LOCK_ASHARE(vp); 755168404Spjd 756185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 757185029Spjd list_insert_tail(&zfsvfs->z_all_znodes, zp); 758185029Spjd membar_producer(); 759168404Spjd /* 760185029Spjd * Everything else must be valid before assigning z_zfsvfs makes the 761185029Spjd * znode eligible for zfs_znode_move(). 762168404Spjd */ 763185029Spjd zp->z_zfsvfs = zfsvfs; 764185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 765168404Spjd 766168404Spjd VFS_HOLD(zfsvfs->z_vfs); 767185029Spjd return (zp); 768168404Spjd} 769168404Spjd 770219089Spjdstatic uint64_t empty_xattr; 771219089Spjdstatic uint64_t pad[4]; 772219089Spjdstatic zfs_acl_phys_t acl_phys; 773168404Spjd/* 774168404Spjd * Create a new DMU object to hold a zfs znode. 775168404Spjd * 776168404Spjd * IN: dzp - parent directory for new znode 777168404Spjd * vap - file attributes for new znode 778168404Spjd * tx - dmu transaction id for zap operations 779168404Spjd * cr - credentials of caller 780168404Spjd * flag - flags: 781168404Spjd * IS_ROOT_NODE - new object will be root 782168404Spjd * IS_XATTR - new object is an attribute 783185029Spjd * bonuslen - length of bonus buffer 784185029Spjd * setaclp - File/Dir initial ACL 785185029Spjd * fuidp - Tracks fuid allocation. 786168404Spjd * 787185029Spjd * OUT: zpp - allocated znode 788168404Spjd * 789168404Spjd */ 790168404Spjdvoid 791185029Spjdzfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, 792219089Spjd uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) 793168404Spjd{ 794219089Spjd uint64_t crtime[2], atime[2], mtime[2], ctime[2]; 795219089Spjd uint64_t mode, size, links, parent, pflags; 796219089Spjd uint64_t dzp_pflags = 0; 797219089Spjd uint64_t rdev = 0; 798219089Spjd zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 799185029Spjd dmu_buf_t *db; 800168404Spjd timestruc_t now; 801185029Spjd uint64_t gen, obj; 802168404Spjd int err; 803219089Spjd int bonuslen; 804219089Spjd sa_handle_t *sa_hdl; 805219089Spjd dmu_object_type_t obj_type; 806219089Spjd sa_bulk_attr_t sa_attrs[ZPL_END]; 807219089Spjd int cnt = 0; 808219089Spjd zfs_acl_locator_cb_t locate = { 0 }; 809168404Spjd 810168404Spjd ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE)); 811168404Spjd 812209962Smm if (zfsvfs->z_replay) { 813185029Spjd obj = vap->va_nodeid; 814168404Spjd now = vap->va_ctime; /* see zfs_replay_create() */ 815168404Spjd gen = vap->va_nblocks; /* ditto */ 816168404Spjd } else { 817185029Spjd obj = 0; 818168404Spjd gethrestime(&now); 819168404Spjd gen = dmu_tx_get_txg(tx); 820168404Spjd } 821168404Spjd 822219089Spjd obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; 823219089Spjd bonuslen = (obj_type == DMU_OT_SA) ? 824219089Spjd DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; 825219089Spjd 826168404Spjd /* 827168404Spjd * Create a new DMU object. 828168404Spjd */ 829168404Spjd /* 830168404Spjd * There's currently no mechanism for pre-reading the blocks that will 831219089Spjd * be needed to allocate a new object, so we accept the small chance 832168404Spjd * that there will be an i/o error and we will fail one of the 833168404Spjd * assertions below. 834168404Spjd */ 835168404Spjd if (vap->va_type == VDIR) { 836209962Smm if (zfsvfs->z_replay) { 837185029Spjd err = zap_create_claim_norm(zfsvfs->z_os, obj, 838185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 839219089Spjd obj_type, bonuslen, tx); 840240415Smm ASSERT0(err); 841168404Spjd } else { 842185029Spjd obj = zap_create_norm(zfsvfs->z_os, 843185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 844219089Spjd obj_type, bonuslen, tx); 845168404Spjd } 846168404Spjd } else { 847209962Smm if (zfsvfs->z_replay) { 848185029Spjd err = dmu_object_claim(zfsvfs->z_os, obj, 849168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 850219089Spjd obj_type, bonuslen, tx); 851240415Smm ASSERT0(err); 852168404Spjd } else { 853185029Spjd obj = dmu_object_alloc(zfsvfs->z_os, 854168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 855219089Spjd obj_type, bonuslen, tx); 856168404Spjd } 857168404Spjd } 858207334Spjd 859241628Savg getnewvnode_reserve(1); 860207334Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 861219089Spjd VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); 862168404Spjd 863168404Spjd /* 864168404Spjd * If this is the root, fix up the half-initialized parent pointer 865168404Spjd * to reference the just-allocated physical data area. 866168404Spjd */ 867168404Spjd if (flag & IS_ROOT_NODE) { 868185029Spjd dzp->z_id = obj; 869219089Spjd } else { 870219089Spjd dzp_pflags = dzp->z_pflags; 871168404Spjd } 872168404Spjd 873168404Spjd /* 874168404Spjd * If parent is an xattr, so am I. 875168404Spjd */ 876219089Spjd if (dzp_pflags & ZFS_XATTR) { 877168404Spjd flag |= IS_XATTR; 878168404Spjd } 879168404Spjd 880185029Spjd if (zfsvfs->z_use_fuids) 881219089Spjd pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; 882219089Spjd else 883219089Spjd pflags = 0; 884185029Spjd 885168404Spjd if (vap->va_type == VDIR) { 886219089Spjd size = 2; /* contents ("." and "..") */ 887219089Spjd links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; 888219089Spjd } else { 889219089Spjd size = links = 0; 890168404Spjd } 891168404Spjd 892219089Spjd if (vap->va_type == VBLK || vap->va_type == VCHR) { 893219089Spjd rdev = zfs_expldev(vap->va_rdev); 894219089Spjd } 895219089Spjd 896219089Spjd parent = dzp->z_id; 897219089Spjd mode = acl_ids->z_mode; 898168404Spjd if (flag & IS_XATTR) 899219089Spjd pflags |= ZFS_XATTR; 900168404Spjd 901219089Spjd /* 902219089Spjd * No execs denied will be deterimed when zfs_mode_compute() is called. 903219089Spjd */ 904219089Spjd pflags |= acl_ids->z_aclp->z_hints & 905219089Spjd (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| 906219089Spjd ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); 907168404Spjd 908219089Spjd ZFS_TIME_ENCODE(&now, crtime); 909219089Spjd ZFS_TIME_ENCODE(&now, ctime); 910168404Spjd 911168404Spjd if (vap->va_mask & AT_ATIME) { 912219089Spjd ZFS_TIME_ENCODE(&vap->va_atime, atime); 913168404Spjd } else { 914219089Spjd ZFS_TIME_ENCODE(&now, atime); 915168404Spjd } 916168404Spjd 917168404Spjd if (vap->va_mask & AT_MTIME) { 918219089Spjd ZFS_TIME_ENCODE(&vap->va_mtime, mtime); 919168404Spjd } else { 920219089Spjd ZFS_TIME_ENCODE(&now, mtime); 921168404Spjd } 922168404Spjd 923219089Spjd /* Now add in all of the "SA" attributes */ 924219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, 925219089Spjd &sa_hdl)); 926219089Spjd 927219089Spjd /* 928219089Spjd * Setup the array of attributes to be replaced/set on the new file 929219089Spjd * 930219089Spjd * order for DMU_OT_ZNODE is critical since it needs to be constructed 931219089Spjd * in the old znode_phys_t format. Don't change this ordering 932219089Spjd */ 933219089Spjd 934219089Spjd if (obj_type == DMU_OT_ZNODE) { 935219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 936219089Spjd NULL, &atime, 16); 937219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 938219089Spjd NULL, &mtime, 16); 939219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 940219089Spjd NULL, &ctime, 16); 941219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 942219089Spjd NULL, &crtime, 16); 943219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 944219089Spjd NULL, &gen, 8); 945219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 946219089Spjd NULL, &mode, 8); 947219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 948219089Spjd NULL, &size, 8); 949219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 950219089Spjd NULL, &parent, 8); 951219089Spjd } else { 952219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 953219089Spjd NULL, &mode, 8); 954219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 955219089Spjd NULL, &size, 8); 956219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 957219089Spjd NULL, &gen, 8); 958219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 959219089Spjd &acl_ids->z_fuid, 8); 960219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 961219089Spjd &acl_ids->z_fgid, 8); 962219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 963219089Spjd NULL, &parent, 8); 964219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 965219089Spjd NULL, &pflags, 8); 966219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 967219089Spjd NULL, &atime, 16); 968219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 969219089Spjd NULL, &mtime, 16); 970219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 971219089Spjd NULL, &ctime, 16); 972219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 973219089Spjd NULL, &crtime, 16); 974219089Spjd } 975219089Spjd 976219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); 977219089Spjd 978219089Spjd if (obj_type == DMU_OT_ZNODE) { 979219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, 980219089Spjd &empty_xattr, 8); 981219089Spjd } 982219089Spjd if (obj_type == DMU_OT_ZNODE || 983219089Spjd (vap->va_type == VBLK || vap->va_type == VCHR)) { 984219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), 985219089Spjd NULL, &rdev, 8); 986219089Spjd 987219089Spjd } 988219089Spjd if (obj_type == DMU_OT_ZNODE) { 989219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 990219089Spjd NULL, &pflags, 8); 991219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 992219089Spjd &acl_ids->z_fuid, 8); 993219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 994219089Spjd &acl_ids->z_fgid, 8); 995219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, 996219089Spjd sizeof (uint64_t) * 4); 997219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, 998219089Spjd &acl_phys, sizeof (zfs_acl_phys_t)); 999219089Spjd } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { 1000219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, 1001219089Spjd &acl_ids->z_aclp->z_acl_count, 8); 1002219089Spjd locate.cb_aclp = acl_ids->z_aclp; 1003219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), 1004219089Spjd zfs_acl_data_locator, &locate, 1005219089Spjd acl_ids->z_aclp->z_acl_bytes); 1006219089Spjd mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, 1007219089Spjd acl_ids->z_fuid, acl_ids->z_fgid); 1008219089Spjd } 1009219089Spjd 1010219089Spjd VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); 1011219089Spjd 1012185029Spjd if (!(flag & IS_ROOT_NODE)) { 1013219089Spjd *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); 1014219089Spjd ASSERT(*zpp != NULL); 1015185029Spjd } else { 1016185029Spjd /* 1017185029Spjd * If we are creating the root node, the "parent" we 1018185029Spjd * passed in is the znode for the root. 1019185029Spjd */ 1020185029Spjd *zpp = dzp; 1021219089Spjd 1022219089Spjd (*zpp)->z_sa_hdl = sa_hdl; 1023185029Spjd } 1024219089Spjd 1025219089Spjd (*zpp)->z_pflags = pflags; 1026219089Spjd (*zpp)->z_mode = mode; 1027219089Spjd 1028209962Smm if (vap->va_mask & AT_XVATTR) 1029219089Spjd zfs_xvattr_set(*zpp, (xvattr_t *)vap, tx); 1030219089Spjd 1031219089Spjd if (obj_type == DMU_OT_ZNODE || 1032219089Spjd acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { 1033219089Spjd err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); 1034240415Smm ASSERT0(err); 1035219089Spjd } 1036185029Spjd if (!(flag & IS_ROOT_NODE)) { 1037185029Spjd vnode_t *vp; 1038168404Spjd 1039185029Spjd vp = ZTOV(*zpp); 1040185029Spjd vp->v_vflag |= VV_FORCEINSMQ; 1041185029Spjd err = insmntque(vp, zfsvfs->z_vfs); 1042185029Spjd vp->v_vflag &= ~VV_FORCEINSMQ; 1043185029Spjd KASSERT(err == 0, ("insmntque() failed: error %d", err)); 1044185029Spjd } 1045219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1046241628Savg getnewvnode_drop_reserve(); 1047185029Spjd} 1048168404Spjd 1049219089Spjd/* 1050219089Spjd * zfs_xvattr_set only updates the in-core attributes 1051219089Spjd * it is assumed the caller will be doing an sa_bulk_update 1052219089Spjd * to push the changes out 1053219089Spjd */ 1054185029Spjdvoid 1055219089Spjdzfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) 1056185029Spjd{ 1057185029Spjd xoptattr_t *xoap; 1058168404Spjd 1059185029Spjd xoap = xva_getxoptattr(xvap); 1060185029Spjd ASSERT(xoap); 1061168404Spjd 1062185029Spjd if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { 1063219089Spjd uint64_t times[2]; 1064219089Spjd ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); 1065219089Spjd (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), 1066219089Spjd ×, sizeof (times), tx); 1067185029Spjd XVA_SET_RTN(xvap, XAT_CREATETIME); 1068168404Spjd } 1069185029Spjd if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { 1070219089Spjd ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, 1071219089Spjd zp->z_pflags, tx); 1072185029Spjd XVA_SET_RTN(xvap, XAT_READONLY); 1073185029Spjd } 1074185029Spjd if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { 1075219089Spjd ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, 1076219089Spjd zp->z_pflags, tx); 1077185029Spjd XVA_SET_RTN(xvap, XAT_HIDDEN); 1078185029Spjd } 1079185029Spjd if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { 1080219089Spjd ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, 1081219089Spjd zp->z_pflags, tx); 1082185029Spjd XVA_SET_RTN(xvap, XAT_SYSTEM); 1083185029Spjd } 1084185029Spjd if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { 1085219089Spjd ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, 1086219089Spjd zp->z_pflags, tx); 1087185029Spjd XVA_SET_RTN(xvap, XAT_ARCHIVE); 1088185029Spjd } 1089185029Spjd if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { 1090219089Spjd ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, 1091219089Spjd zp->z_pflags, tx); 1092185029Spjd XVA_SET_RTN(xvap, XAT_IMMUTABLE); 1093185029Spjd } 1094185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { 1095219089Spjd ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, 1096219089Spjd zp->z_pflags, tx); 1097185029Spjd XVA_SET_RTN(xvap, XAT_NOUNLINK); 1098185029Spjd } 1099185029Spjd if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { 1100219089Spjd ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, 1101219089Spjd zp->z_pflags, tx); 1102185029Spjd XVA_SET_RTN(xvap, XAT_APPENDONLY); 1103185029Spjd } 1104185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { 1105219089Spjd ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, 1106219089Spjd zp->z_pflags, tx); 1107185029Spjd XVA_SET_RTN(xvap, XAT_NODUMP); 1108185029Spjd } 1109185029Spjd if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { 1110219089Spjd ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, 1111219089Spjd zp->z_pflags, tx); 1112185029Spjd XVA_SET_RTN(xvap, XAT_OPAQUE); 1113185029Spjd } 1114185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { 1115185029Spjd ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, 1116219089Spjd xoap->xoa_av_quarantined, zp->z_pflags, tx); 1117185029Spjd XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); 1118185029Spjd } 1119185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { 1120219089Spjd ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, 1121219089Spjd zp->z_pflags, tx); 1122185029Spjd XVA_SET_RTN(xvap, XAT_AV_MODIFIED); 1123185029Spjd } 1124185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { 1125219089Spjd zfs_sa_set_scanstamp(zp, xvap, tx); 1126185029Spjd XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); 1127185029Spjd } 1128219089Spjd if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { 1129219089Spjd ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, 1130219089Spjd zp->z_pflags, tx); 1131219089Spjd XVA_SET_RTN(xvap, XAT_REPARSE); 1132219089Spjd } 1133219089Spjd if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { 1134219089Spjd ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, 1135219089Spjd zp->z_pflags, tx); 1136219089Spjd XVA_SET_RTN(xvap, XAT_OFFLINE); 1137219089Spjd } 1138219089Spjd if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { 1139219089Spjd ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, 1140219089Spjd zp->z_pflags, tx); 1141219089Spjd XVA_SET_RTN(xvap, XAT_SPARSE); 1142219089Spjd } 1143168404Spjd} 1144168404Spjd 1145168404Spjdint 1146168404Spjdzfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) 1147168404Spjd{ 1148168404Spjd dmu_object_info_t doi; 1149168404Spjd dmu_buf_t *db; 1150168404Spjd znode_t *zp; 1151219089Spjd int err; 1152219089Spjd sa_handle_t *hdl; 1153219089Spjd int first = 1; 1154168404Spjd 1155168404Spjd *zpp = NULL; 1156219089Spjd 1157241628Savg getnewvnode_reserve(1); 1158185029Spjdagain: 1159168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1160168404Spjd 1161219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1162168404Spjd if (err) { 1163168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1164241628Savg getnewvnode_drop_reserve(); 1165168404Spjd return (err); 1166168404Spjd } 1167168404Spjd 1168168404Spjd dmu_object_info_from_db(db, &doi); 1169219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1170219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1171219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1172219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1173219089Spjd sa_buf_rele(db, NULL); 1174168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1175241628Savg getnewvnode_drop_reserve(); 1176168404Spjd return (EINVAL); 1177168404Spjd } 1178168404Spjd 1179219089Spjd hdl = dmu_buf_get_user(db); 1180219089Spjd if (hdl != NULL) { 1181219089Spjd zp = sa_get_userdata(hdl); 1182168404Spjd 1183219089Spjd 1184185029Spjd /* 1185219089Spjd * Since "SA" does immediate eviction we 1186219089Spjd * should never find a sa handle that doesn't 1187219089Spjd * know about the znode. 1188185029Spjd */ 1189219089Spjd 1190219089Spjd ASSERT3P(zp, !=, NULL); 1191219089Spjd 1192219089Spjd mutex_enter(&zp->z_lock); 1193168404Spjd ASSERT3U(zp->z_id, ==, obj_num); 1194168404Spjd if (zp->z_unlinked) { 1195185029Spjd err = ENOENT; 1196168404Spjd } else { 1197219089Spjd vnode_t *vp; 1198197458Spjd int dying = 0; 1199197458Spjd 1200197458Spjd vp = ZTOV(zp); 1201197458Spjd if (vp == NULL) 1202197458Spjd dying = 1; 1203197458Spjd else { 1204197458Spjd VN_HOLD(vp); 1205197131Spjd if ((vp->v_iflag & VI_DOOMED) != 0) { 1206197458Spjd dying = 1; 1207197458Spjd /* 1208197458Spjd * Don't VN_RELE() vnode here, because 1209197458Spjd * it can call vn_lock() which creates 1210197458Spjd * LOR between vnode lock and znode 1211197458Spjd * lock. We will VN_RELE() the vnode 1212197458Spjd * after droping znode lock. 1213197458Spjd */ 1214197458Spjd } 1215197131Spjd } 1216197458Spjd if (dying) { 1217185029Spjd if (first) { 1218185029Spjd ZFS_LOG(1, "dying znode detected (zp=%p)", zp); 1219185029Spjd first = 0; 1220185029Spjd } 1221185029Spjd /* 1222185029Spjd * znode is dying so we can't reuse it, we must 1223185029Spjd * wait until destruction is completed. 1224185029Spjd */ 1225219089Spjd sa_buf_rele(db, NULL); 1226185029Spjd mutex_exit(&zp->z_lock); 1227185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1228197458Spjd if (vp != NULL) 1229197458Spjd VN_RELE(vp); 1230185029Spjd tsleep(zp, 0, "zcollide", 1); 1231185029Spjd goto again; 1232185029Spjd } 1233185029Spjd *zpp = zp; 1234185029Spjd err = 0; 1235168404Spjd } 1236219089Spjd sa_buf_rele(db, NULL); 1237168404Spjd mutex_exit(&zp->z_lock); 1238168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1239241628Savg getnewvnode_drop_reserve(); 1240185029Spjd return (err); 1241168404Spjd } 1242168404Spjd 1243168404Spjd /* 1244168404Spjd * Not found create new znode/vnode 1245207334Spjd * but only if file exists. 1246207334Spjd * 1247207334Spjd * There is a small window where zfs_vget() could 1248207334Spjd * find this object while a file create is still in 1249219089Spjd * progress. This is checked for in zfs_znode_alloc() 1250219089Spjd * 1251219089Spjd * if zfs_znode_alloc() fails it will drop the hold on the 1252219089Spjd * bonus buffer. 1253168404Spjd */ 1254219089Spjd zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, 1255219089Spjd doi.doi_bonus_type, NULL); 1256219089Spjd if (zp == NULL) { 1257219089Spjd err = ENOENT; 1258219089Spjd } else { 1259219089Spjd *zpp = zp; 1260219089Spjd } 1261219089Spjd if (err == 0) { 1262219089Spjd vnode_t *vp = ZTOV(zp); 1263185029Spjd 1264207334Spjd err = insmntque(vp, zfsvfs->z_vfs); 1265219089Spjd if (err == 0) 1266219089Spjd VOP_UNLOCK(vp, 0); 1267219089Spjd else { 1268219089Spjd zp->z_vnode = NULL; 1269219089Spjd zfs_znode_dmu_fini(zp); 1270219089Spjd zfs_znode_free(zp); 1271219089Spjd *zpp = NULL; 1272219089Spjd } 1273207334Spjd } 1274168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1275241628Savg getnewvnode_drop_reserve(); 1276207334Spjd return (err); 1277168404Spjd} 1278168404Spjd 1279185029Spjdint 1280185029Spjdzfs_rezget(znode_t *zp) 1281185029Spjd{ 1282185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1283185029Spjd dmu_object_info_t doi; 1284185029Spjd dmu_buf_t *db; 1285225166Smm vnode_t *vp; 1286185029Spjd uint64_t obj_num = zp->z_id; 1287219089Spjd uint64_t mode, size; 1288219089Spjd sa_bulk_attr_t bulk[8]; 1289185029Spjd int err; 1290219089Spjd int count = 0; 1291219089Spjd uint64_t gen; 1292185029Spjd 1293185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1294185029Spjd 1295219089Spjd mutex_enter(&zp->z_acl_lock); 1296219089Spjd if (zp->z_acl_cached) { 1297219089Spjd zfs_acl_free(zp->z_acl_cached); 1298219089Spjd zp->z_acl_cached = NULL; 1299219089Spjd } 1300219089Spjd 1301219089Spjd mutex_exit(&zp->z_acl_lock); 1302219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1303219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1304185029Spjd if (err) { 1305185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1306185029Spjd return (err); 1307185029Spjd } 1308185029Spjd 1309185029Spjd dmu_object_info_from_db(db, &doi); 1310219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1311219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1312219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1313219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1314219089Spjd sa_buf_rele(db, NULL); 1315185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1316185029Spjd return (EINVAL); 1317185029Spjd } 1318185029Spjd 1319219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); 1320219089Spjd size = zp->z_size; 1321219089Spjd 1322219089Spjd /* reload cached values */ 1323219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, 1324219089Spjd &gen, sizeof (gen)); 1325219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 1326219089Spjd &zp->z_size, sizeof (zp->z_size)); 1327219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 1328219089Spjd &zp->z_links, sizeof (zp->z_links)); 1329219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 1330219089Spjd &zp->z_pflags, sizeof (zp->z_pflags)); 1331219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 1332219089Spjd &zp->z_atime, sizeof (zp->z_atime)); 1333219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 1334219089Spjd &zp->z_uid, sizeof (zp->z_uid)); 1335219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 1336219089Spjd &zp->z_gid, sizeof (zp->z_gid)); 1337219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, 1338219089Spjd &mode, sizeof (mode)); 1339219089Spjd 1340219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { 1341219089Spjd zfs_znode_dmu_fini(zp); 1342185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1343185029Spjd return (EIO); 1344185029Spjd } 1345185029Spjd 1346219089Spjd zp->z_mode = mode; 1347219089Spjd 1348219089Spjd if (gen != zp->z_gen) { 1349219089Spjd zfs_znode_dmu_fini(zp); 1350219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1351219089Spjd return (EIO); 1352211932Smm } 1353211932Smm 1354219089Spjd /* 1355219089Spjd * XXXPJD: Not sure how is that possible, but under heavy 1356219089Spjd * zfs recv -F load it happens that z_gen is the same, but 1357219089Spjd * vnode type is different than znode type. This would mean 1358219089Spjd * that for example regular file was replaced with directory 1359219089Spjd * which has the same object number. 1360219089Spjd */ 1361225166Smm vp = ZTOV(zp); 1362225166Smm if (vp != NULL && 1363225166Smm vp->v_type != IFTOVT((mode_t)zp->z_mode)) { 1364219089Spjd zfs_znode_dmu_fini(zp); 1365219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1366219089Spjd return (EIO); 1367219089Spjd } 1368219089Spjd 1369219089Spjd zp->z_unlinked = (zp->z_links == 0); 1370185029Spjd zp->z_blksz = doi.doi_data_block_size; 1371225166Smm if (vp != NULL) { 1372225166Smm vn_pages_remove(vp, 0, 0); 1373225166Smm if (zp->z_size != size) 1374225166Smm vnode_pager_setsize(vp, zp->z_size); 1375225166Smm } 1376185029Spjd 1377185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1378185029Spjd 1379185029Spjd return (0); 1380185029Spjd} 1381185029Spjd 1382168404Spjdvoid 1383168404Spjdzfs_znode_delete(znode_t *zp, dmu_tx_t *tx) 1384168404Spjd{ 1385168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1386185029Spjd objset_t *os = zfsvfs->z_os; 1387185029Spjd uint64_t obj = zp->z_id; 1388219089Spjd uint64_t acl_obj = zfs_external_acl(zp); 1389168404Spjd 1390185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 1391219089Spjd if (acl_obj) { 1392219089Spjd VERIFY(!zp->z_is_sa); 1393185029Spjd VERIFY(0 == dmu_object_free(os, acl_obj, tx)); 1394219089Spjd } 1395185029Spjd VERIFY(0 == dmu_object_free(os, obj, tx)); 1396185029Spjd zfs_znode_dmu_fini(zp); 1397185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1398185029Spjd zfs_znode_free(zp); 1399168404Spjd} 1400168404Spjd 1401168404Spjdvoid 1402168404Spjdzfs_zinactive(znode_t *zp) 1403168404Spjd{ 1404168404Spjd vnode_t *vp = ZTOV(zp); 1405168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1406168404Spjd uint64_t z_id = zp->z_id; 1407201406Sdelphij int vfslocked; 1408168404Spjd 1409219089Spjd ASSERT(zp->z_sa_hdl); 1410168404Spjd 1411168404Spjd /* 1412168404Spjd * Don't allow a zfs_zget() while were trying to release this znode 1413168404Spjd */ 1414168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id); 1415168404Spjd 1416168404Spjd mutex_enter(&zp->z_lock); 1417168404Spjd VI_LOCK(vp); 1418168404Spjd if (vp->v_count > 0) { 1419168404Spjd /* 1420168404Spjd * If the hold count is greater than zero, somebody has 1421168404Spjd * obtained a new reference on this znode while we were 1422168404Spjd * processing it here, so we are done. 1423168404Spjd */ 1424168404Spjd VI_UNLOCK(vp); 1425168404Spjd mutex_exit(&zp->z_lock); 1426168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1427168404Spjd return; 1428168404Spjd } 1429168404Spjd VI_UNLOCK(vp); 1430168404Spjd 1431168404Spjd /* 1432168404Spjd * If this was the last reference to a file with no links, 1433168404Spjd * remove the file from the file system. 1434168404Spjd */ 1435168404Spjd if (zp->z_unlinked) { 1436168404Spjd mutex_exit(&zp->z_lock); 1437168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1438168404Spjd ASSERT(vp->v_count == 0); 1439234607Strasz vrecycle(vp); 1440201406Sdelphij vfslocked = VFS_LOCK_GIANT(zfsvfs->z_vfs); 1441168404Spjd zfs_rmnode(zp); 1442201406Sdelphij VFS_UNLOCK_GIANT(vfslocked); 1443168404Spjd return; 1444168404Spjd } 1445219089Spjd 1446168404Spjd mutex_exit(&zp->z_lock); 1447168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1448168404Spjd} 1449168404Spjd 1450168404Spjdvoid 1451168404Spjdzfs_znode_free(znode_t *zp) 1452168404Spjd{ 1453168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1454168404Spjd 1455185029Spjd ASSERT(ZTOV(zp) == NULL); 1456219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1457168404Spjd mutex_enter(&zfsvfs->z_znodes_lock); 1458185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 1459168404Spjd list_remove(&zfsvfs->z_all_znodes, zp); 1460168404Spjd mutex_exit(&zfsvfs->z_znodes_lock); 1461168404Spjd 1462211932Smm if (zp->z_acl_cached) { 1463211932Smm zfs_acl_free(zp->z_acl_cached); 1464211932Smm zp->z_acl_cached = NULL; 1465211932Smm } 1466211932Smm 1467168404Spjd kmem_cache_free(znode_cache, zp); 1468185029Spjd 1469185029Spjd VFS_RELE(zfsvfs->z_vfs); 1470168404Spjd} 1471168404Spjd 1472168404Spjdvoid 1473219089Spjdzfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], 1474219089Spjd uint64_t ctime[2], boolean_t have_tx) 1475168404Spjd{ 1476168404Spjd timestruc_t now; 1477168404Spjd 1478168404Spjd gethrestime(&now); 1479168404Spjd 1480219089Spjd if (have_tx) { /* will sa_bulk_update happen really soon? */ 1481168404Spjd zp->z_atime_dirty = 0; 1482168404Spjd zp->z_seq++; 1483168404Spjd } else { 1484168404Spjd zp->z_atime_dirty = 1; 1485168404Spjd } 1486168404Spjd 1487219089Spjd if (flag & AT_ATIME) { 1488219089Spjd ZFS_TIME_ENCODE(&now, zp->z_atime); 1489219089Spjd } 1490168404Spjd 1491185029Spjd if (flag & AT_MTIME) { 1492219089Spjd ZFS_TIME_ENCODE(&now, mtime); 1493219089Spjd if (zp->z_zfsvfs->z_use_fuids) { 1494219089Spjd zp->z_pflags |= (ZFS_ARCHIVE | 1495219089Spjd ZFS_AV_MODIFIED); 1496219089Spjd } 1497185029Spjd } 1498168404Spjd 1499185029Spjd if (flag & AT_CTIME) { 1500219089Spjd ZFS_TIME_ENCODE(&now, ctime); 1501185029Spjd if (zp->z_zfsvfs->z_use_fuids) 1502219089Spjd zp->z_pflags |= ZFS_ARCHIVE; 1503185029Spjd } 1504168404Spjd} 1505168404Spjd 1506168404Spjd/* 1507168404Spjd * Grow the block size for a file. 1508168404Spjd * 1509168404Spjd * IN: zp - znode of file to free data in. 1510168404Spjd * size - requested block size 1511168404Spjd * tx - open transaction. 1512168404Spjd * 1513168404Spjd * NOTE: this function assumes that the znode is write locked. 1514168404Spjd */ 1515168404Spjdvoid 1516168404Spjdzfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) 1517168404Spjd{ 1518168404Spjd int error; 1519168404Spjd u_longlong_t dummy; 1520168404Spjd 1521168404Spjd if (size <= zp->z_blksz) 1522168404Spjd return; 1523168404Spjd /* 1524168404Spjd * If the file size is already greater than the current blocksize, 1525168404Spjd * we will not grow. If there is more than one block in a file, 1526168404Spjd * the blocksize cannot change. 1527168404Spjd */ 1528219089Spjd if (zp->z_blksz && zp->z_size > zp->z_blksz) 1529168404Spjd return; 1530168404Spjd 1531168404Spjd error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id, 1532168404Spjd size, 0, tx); 1533219089Spjd 1534168404Spjd if (error == ENOTSUP) 1535168404Spjd return; 1536240415Smm ASSERT0(error); 1537168404Spjd 1538168404Spjd /* What blocksize did we actually get? */ 1539219089Spjd dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); 1540168404Spjd} 1541168404Spjd 1542219089Spjd#ifdef sun 1543168404Spjd/* 1544219089Spjd * This is a dummy interface used when pvn_vplist_dirty() should *not* 1545219089Spjd * be calling back into the fs for a putpage(). E.g.: when truncating 1546219089Spjd * a file, the pages being "thrown away* don't need to be written out. 1547219089Spjd */ 1548219089Spjd/* ARGSUSED */ 1549219089Spjdstatic int 1550219089Spjdzfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, 1551219089Spjd int flags, cred_t *cr) 1552219089Spjd{ 1553219089Spjd ASSERT(0); 1554219089Spjd return (0); 1555219089Spjd} 1556219089Spjd#endif /* sun */ 1557219089Spjd 1558219089Spjd/* 1559185029Spjd * Increase the file length 1560168404Spjd * 1561168404Spjd * IN: zp - znode of file to free data in. 1562185029Spjd * end - new end-of-file 1563168404Spjd * 1564168404Spjd * RETURN: 0 if success 1565168404Spjd * error code if failure 1566168404Spjd */ 1567185029Spjdstatic int 1568185029Spjdzfs_extend(znode_t *zp, uint64_t end) 1569168404Spjd{ 1570185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1571168404Spjd dmu_tx_t *tx; 1572168404Spjd rl_t *rl; 1573185029Spjd uint64_t newblksz; 1574168404Spjd int error; 1575168404Spjd 1576168404Spjd /* 1577185029Spjd * We will change zp_size, lock the whole file. 1578168404Spjd */ 1579185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1580168404Spjd 1581168404Spjd /* 1582168404Spjd * Nothing to do if file already at desired length. 1583168404Spjd */ 1584219089Spjd if (end <= zp->z_size) { 1585168404Spjd zfs_range_unlock(rl); 1586168404Spjd return (0); 1587168404Spjd } 1588185029Spjdtop: 1589168404Spjd tx = dmu_tx_create(zfsvfs->z_os); 1590219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1591219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1592185029Spjd if (end > zp->z_blksz && 1593168404Spjd (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { 1594168404Spjd /* 1595168404Spjd * We are growing the file past the current block size. 1596168404Spjd */ 1597168404Spjd if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) { 1598168404Spjd ASSERT(!ISP2(zp->z_blksz)); 1599185029Spjd newblksz = MIN(end, SPA_MAXBLOCKSIZE); 1600168404Spjd } else { 1601185029Spjd newblksz = MIN(end, zp->z_zfsvfs->z_max_blksz); 1602168404Spjd } 1603185029Spjd dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); 1604185029Spjd } else { 1605185029Spjd newblksz = 0; 1606168404Spjd } 1607168404Spjd 1608209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1609168404Spjd if (error) { 1610209962Smm if (error == ERESTART) { 1611168404Spjd dmu_tx_wait(tx); 1612185029Spjd dmu_tx_abort(tx); 1613185029Spjd goto top; 1614185029Spjd } 1615168404Spjd dmu_tx_abort(tx); 1616168404Spjd zfs_range_unlock(rl); 1617168404Spjd return (error); 1618168404Spjd } 1619168404Spjd 1620185029Spjd if (newblksz) 1621185029Spjd zfs_grow_blocksize(zp, newblksz, tx); 1622168404Spjd 1623219089Spjd zp->z_size = end; 1624168404Spjd 1625219089Spjd VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), 1626219089Spjd &zp->z_size, sizeof (zp->z_size), tx)); 1627219089Spjd 1628219089Spjd vnode_pager_setsize(ZTOV(zp), end); 1629219089Spjd 1630185029Spjd zfs_range_unlock(rl); 1631168404Spjd 1632185029Spjd dmu_tx_commit(tx); 1633185029Spjd 1634185029Spjd return (0); 1635185029Spjd} 1636185029Spjd 1637185029Spjd/* 1638185029Spjd * Free space in a file. 1639185029Spjd * 1640185029Spjd * IN: zp - znode of file to free data in. 1641185029Spjd * off - start of section to free. 1642185029Spjd * len - length of section to free. 1643185029Spjd * 1644185029Spjd * RETURN: 0 if success 1645185029Spjd * error code if failure 1646185029Spjd */ 1647185029Spjdstatic int 1648185029Spjdzfs_free_range(znode_t *zp, uint64_t off, uint64_t len) 1649185029Spjd{ 1650185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1651185029Spjd rl_t *rl; 1652185029Spjd int error; 1653185029Spjd 1654185029Spjd /* 1655185029Spjd * Lock the range being freed. 1656185029Spjd */ 1657185029Spjd rl = zfs_range_lock(zp, off, len, RL_WRITER); 1658185029Spjd 1659185029Spjd /* 1660185029Spjd * Nothing to do if file already at desired length. 1661185029Spjd */ 1662219089Spjd if (off >= zp->z_size) { 1663185029Spjd zfs_range_unlock(rl); 1664185029Spjd return (0); 1665168404Spjd } 1666168404Spjd 1667219089Spjd if (off + len > zp->z_size) 1668219089Spjd len = zp->z_size - off; 1669185029Spjd 1670185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); 1671185029Spjd 1672185029Spjd if (error == 0) { 1673185029Spjd /* 1674185029Spjd * In FreeBSD we cannot free block in the middle of a file, 1675219089Spjd * but only at the end of a file, so this code path should 1676219089Spjd * never happen. 1677185029Spjd */ 1678185029Spjd vnode_pager_setsize(ZTOV(zp), off); 1679168404Spjd } 1680168404Spjd 1681168404Spjd zfs_range_unlock(rl); 1682168404Spjd 1683185029Spjd return (error); 1684185029Spjd} 1685185029Spjd 1686185029Spjd/* 1687185029Spjd * Truncate a file 1688185029Spjd * 1689185029Spjd * IN: zp - znode of file to free data in. 1690185029Spjd * end - new end-of-file. 1691185029Spjd * 1692185029Spjd * RETURN: 0 if success 1693185029Spjd * error code if failure 1694185029Spjd */ 1695185029Spjdstatic int 1696185029Spjdzfs_trunc(znode_t *zp, uint64_t end) 1697185029Spjd{ 1698185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1699185029Spjd vnode_t *vp = ZTOV(zp); 1700185029Spjd dmu_tx_t *tx; 1701185029Spjd rl_t *rl; 1702185029Spjd int error; 1703219089Spjd sa_bulk_attr_t bulk[2]; 1704219089Spjd int count = 0; 1705185029Spjd 1706185029Spjd /* 1707185029Spjd * We will change zp_size, lock the whole file. 1708185029Spjd */ 1709185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1710185029Spjd 1711185029Spjd /* 1712185029Spjd * Nothing to do if file already at desired length. 1713185029Spjd */ 1714219089Spjd if (end >= zp->z_size) { 1715185029Spjd zfs_range_unlock(rl); 1716185029Spjd return (0); 1717185029Spjd } 1718185029Spjd 1719185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1); 1720185029Spjd if (error) { 1721185029Spjd zfs_range_unlock(rl); 1722185029Spjd return (error); 1723185029Spjd } 1724185029Spjdtop: 1725185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1726219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1727219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1728209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1729185029Spjd if (error) { 1730209962Smm if (error == ERESTART) { 1731185029Spjd dmu_tx_wait(tx); 1732185029Spjd dmu_tx_abort(tx); 1733185029Spjd goto top; 1734185029Spjd } 1735185029Spjd dmu_tx_abort(tx); 1736185029Spjd zfs_range_unlock(rl); 1737185029Spjd return (error); 1738185029Spjd } 1739185029Spjd 1740219089Spjd zp->z_size = end; 1741219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), 1742219089Spjd NULL, &zp->z_size, sizeof (zp->z_size)); 1743185029Spjd 1744219089Spjd if (end == 0) { 1745219089Spjd zp->z_pflags &= ~ZFS_SPARSE; 1746219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1747219089Spjd NULL, &zp->z_pflags, 8); 1748219089Spjd } 1749219089Spjd VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); 1750219089Spjd 1751168404Spjd dmu_tx_commit(tx); 1752168404Spjd 1753168404Spjd /* 1754168404Spjd * Clear any mapped pages in the truncated region. This has to 1755168404Spjd * happen outside of the transaction to avoid the possibility of 1756168404Spjd * a deadlock with someone trying to push a page that we are 1757168404Spjd * about to invalidate. 1758168404Spjd */ 1759185029Spjd vnode_pager_setsize(vp, end); 1760168404Spjd 1761209962Smm zfs_range_unlock(rl); 1762209962Smm 1763168404Spjd return (0); 1764168404Spjd} 1765168404Spjd 1766185029Spjd/* 1767185029Spjd * Free space in a file 1768185029Spjd * 1769185029Spjd * IN: zp - znode of file to free data in. 1770185029Spjd * off - start of range 1771185029Spjd * len - end of range (0 => EOF) 1772185029Spjd * flag - current file open mode flags. 1773185029Spjd * log - TRUE if this action should be logged 1774185029Spjd * 1775185029Spjd * RETURN: 0 if success 1776185029Spjd * error code if failure 1777185029Spjd */ 1778185029Spjdint 1779185029Spjdzfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) 1780185029Spjd{ 1781185029Spjd vnode_t *vp = ZTOV(zp); 1782185029Spjd dmu_tx_t *tx; 1783185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1784185029Spjd zilog_t *zilog = zfsvfs->z_log; 1785219089Spjd uint64_t mode; 1786219089Spjd uint64_t mtime[2], ctime[2]; 1787219089Spjd sa_bulk_attr_t bulk[3]; 1788219089Spjd int count = 0; 1789185029Spjd int error; 1790185029Spjd 1791219089Spjd if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, 1792219089Spjd sizeof (mode))) != 0) 1793219089Spjd return (error); 1794219089Spjd 1795219089Spjd if (off > zp->z_size) { 1796185029Spjd error = zfs_extend(zp, off+len); 1797185029Spjd if (error == 0 && log) 1798185029Spjd goto log; 1799185029Spjd else 1800185029Spjd return (error); 1801185029Spjd } 1802185029Spjd 1803219089Spjd /* 1804219089Spjd * Check for any locks in the region to be freed. 1805219089Spjd */ 1806219089Spjd 1807219089Spjd if (MANDLOCK(vp, (mode_t)mode)) { 1808219089Spjd uint64_t length = (len ? len : zp->z_size - off); 1809219089Spjd if (error = chklock(vp, FWRITE, off, length, flag, NULL)) 1810219089Spjd return (error); 1811219089Spjd } 1812219089Spjd 1813185029Spjd if (len == 0) { 1814185029Spjd error = zfs_trunc(zp, off); 1815185029Spjd } else { 1816185029Spjd if ((error = zfs_free_range(zp, off, len)) == 0 && 1817219089Spjd off + len > zp->z_size) 1818185029Spjd error = zfs_extend(zp, off+len); 1819185029Spjd } 1820185029Spjd if (error || !log) 1821185029Spjd return (error); 1822185029Spjdlog: 1823185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1824219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1825219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1826209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1827185029Spjd if (error) { 1828209962Smm if (error == ERESTART) { 1829185029Spjd dmu_tx_wait(tx); 1830185029Spjd dmu_tx_abort(tx); 1831185029Spjd goto log; 1832185029Spjd } 1833185029Spjd dmu_tx_abort(tx); 1834185029Spjd return (error); 1835185029Spjd } 1836185029Spjd 1837219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); 1838219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); 1839219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1840219089Spjd NULL, &zp->z_pflags, 8); 1841219089Spjd zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); 1842219089Spjd error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); 1843219089Spjd ASSERT(error == 0); 1844219089Spjd 1845185029Spjd zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); 1846185029Spjd 1847185029Spjd dmu_tx_commit(tx); 1848185029Spjd return (0); 1849185029Spjd} 1850185029Spjd 1851168404Spjdvoid 1852185029Spjdzfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) 1853168404Spjd{ 1854168404Spjd zfsvfs_t zfsvfs; 1855219089Spjd uint64_t moid, obj, sa_obj, version; 1856185029Spjd uint64_t sense = ZFS_CASE_SENSITIVE; 1857185029Spjd uint64_t norm = 0; 1858185029Spjd nvpair_t *elem; 1859168404Spjd int error; 1860207334Spjd int i; 1861168404Spjd znode_t *rootzp = NULL; 1862199156Spjd vnode_t vnode; 1863168404Spjd vattr_t vattr; 1864185029Spjd znode_t *zp; 1865209962Smm zfs_acl_ids_t acl_ids; 1866168404Spjd 1867168404Spjd /* 1868168404Spjd * First attempt to create master node. 1869168404Spjd */ 1870168404Spjd /* 1871168404Spjd * In an empty objset, there are no blocks to read and thus 1872168404Spjd * there can be no i/o errors (which we assert below). 1873168404Spjd */ 1874168404Spjd moid = MASTER_NODE_OBJ; 1875168404Spjd error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, 1876168404Spjd DMU_OT_NONE, 0, tx); 1877168404Spjd ASSERT(error == 0); 1878168404Spjd 1879168404Spjd /* 1880168404Spjd * Set starting attributes. 1881168404Spjd */ 1882219089Spjd version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); 1883185029Spjd elem = NULL; 1884185029Spjd while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { 1885185029Spjd /* For the moment we expect all zpl props to be uint64_ts */ 1886185029Spjd uint64_t val; 1887185029Spjd char *name; 1888168404Spjd 1889185029Spjd ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); 1890185029Spjd VERIFY(nvpair_value_uint64(elem, &val) == 0); 1891185029Spjd name = nvpair_name(elem); 1892185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { 1893209962Smm if (val < version) 1894209962Smm version = val; 1895185029Spjd } else { 1896185029Spjd error = zap_update(os, moid, name, 8, 1, &val, tx); 1897185029Spjd } 1898185029Spjd ASSERT(error == 0); 1899185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) 1900185029Spjd norm = val; 1901185029Spjd else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) 1902185029Spjd sense = val; 1903185029Spjd } 1904185029Spjd ASSERT(version != 0); 1905209962Smm error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); 1906168404Spjd 1907168404Spjd /* 1908219089Spjd * Create zap object used for SA attribute registration 1909219089Spjd */ 1910219089Spjd 1911219089Spjd if (version >= ZPL_VERSION_SA) { 1912219089Spjd sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, 1913219089Spjd DMU_OT_NONE, 0, tx); 1914219089Spjd error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); 1915219089Spjd ASSERT(error == 0); 1916219089Spjd } else { 1917219089Spjd sa_obj = 0; 1918219089Spjd } 1919219089Spjd /* 1920168404Spjd * Create a delete queue. 1921168404Spjd */ 1922209962Smm obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); 1923168404Spjd 1924209962Smm error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); 1925168404Spjd ASSERT(error == 0); 1926168404Spjd 1927168404Spjd /* 1928168404Spjd * Create root znode. Create minimal znode/vnode/zfsvfs 1929168404Spjd * to allow zfs_mknode to work. 1930168404Spjd */ 1931185029Spjd VATTR_NULL(&vattr); 1932168404Spjd vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 1933168404Spjd vattr.va_type = VDIR; 1934168404Spjd vattr.va_mode = S_IFDIR|0755; 1935185029Spjd vattr.va_uid = crgetuid(cr); 1936185029Spjd vattr.va_gid = crgetgid(cr); 1937168404Spjd 1938219089Spjd bzero(&zfsvfs, sizeof (zfsvfs_t)); 1939219089Spjd 1940168404Spjd rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); 1941199156Spjd zfs_znode_cache_constructor(rootzp, NULL, 0); 1942219089Spjd ASSERT(!POINTER_IS_VALID(rootzp->z_zfsvfs)); 1943219089Spjd rootzp->z_moved = 0; 1944168404Spjd rootzp->z_unlinked = 0; 1945168404Spjd rootzp->z_atime_dirty = 0; 1946219089Spjd rootzp->z_is_sa = USE_SA(version, os); 1947168404Spjd 1948199156Spjd vnode.v_type = VDIR; 1949199156Spjd vnode.v_data = rootzp; 1950199156Spjd rootzp->z_vnode = &vnode; 1951185029Spjd 1952168404Spjd zfsvfs.z_os = os; 1953168404Spjd zfsvfs.z_parent = &zfsvfs; 1954185029Spjd zfsvfs.z_version = version; 1955185029Spjd zfsvfs.z_use_fuids = USE_FUIDS(version, os); 1956219089Spjd zfsvfs.z_use_sa = USE_SA(version, os); 1957185029Spjd zfsvfs.z_norm = norm; 1958219089Spjd 1959219089Spjd error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, 1960219089Spjd &zfsvfs.z_attr_table); 1961219089Spjd 1962219089Spjd ASSERT(error == 0); 1963219089Spjd 1964185029Spjd /* 1965185029Spjd * Fold case on file systems that are always or sometimes case 1966185029Spjd * insensitive. 1967185029Spjd */ 1968185029Spjd if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) 1969185029Spjd zfsvfs.z_norm |= U8_TEXTPREP_TOUPPER; 1970168404Spjd 1971168404Spjd mutex_init(&zfsvfs.z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); 1972168404Spjd list_create(&zfsvfs.z_all_znodes, sizeof (znode_t), 1973168404Spjd offsetof(znode_t, z_link_node)); 1974168404Spjd 1975207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1976207334Spjd mutex_init(&zfsvfs.z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); 1977207334Spjd 1978185029Spjd rootzp->z_zfsvfs = &zfsvfs; 1979209962Smm VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, 1980209962Smm cr, NULL, &acl_ids)); 1981219089Spjd zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); 1982185029Spjd ASSERT3P(zp, ==, rootzp); 1983185029Spjd error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); 1984168404Spjd ASSERT(error == 0); 1985209962Smm zfs_acl_ids_free(&acl_ids); 1986185029Spjd POINTER_INVALIDATE(&rootzp->z_zfsvfs); 1987168404Spjd 1988219089Spjd sa_handle_destroy(rootzp->z_sa_hdl); 1989209962Smm rootzp->z_vnode = NULL; 1990209962Smm kmem_cache_free(znode_cache, rootzp); 1991209962Smm 1992209962Smm /* 1993209962Smm * Create shares directory 1994209962Smm */ 1995209962Smm 1996209962Smm error = zfs_create_share_dir(&zfsvfs, tx); 1997209962Smm 1998209962Smm ASSERT(error == 0); 1999209962Smm 2000207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 2001207334Spjd mutex_destroy(&zfsvfs.z_hold_mtx[i]); 2002168404Spjd} 2003185029Spjd 2004168404Spjd#endif /* _KERNEL */ 2005219089Spjd 2006168404Spjdstatic int 2007219089Spjdzfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) 2008168404Spjd{ 2009219089Spjd uint64_t sa_obj = 0; 2010219089Spjd int error; 2011219089Spjd 2012219089Spjd error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); 2013219089Spjd if (error != 0 && error != ENOENT) 2014219089Spjd return (error); 2015219089Spjd 2016219089Spjd error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); 2017219089Spjd return (error); 2018219089Spjd} 2019219089Spjd 2020219089Spjdstatic int 2021219089Spjdzfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, 2022219089Spjd dmu_buf_t **db, void *tag) 2023219089Spjd{ 2024168404Spjd dmu_object_info_t doi; 2025168404Spjd int error; 2026168404Spjd 2027219089Spjd if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) 2028168404Spjd return (error); 2029168404Spjd 2030219089Spjd dmu_object_info_from_db(*db, &doi); 2031219089Spjd if ((doi.doi_bonus_type != DMU_OT_SA && 2032219089Spjd doi.doi_bonus_type != DMU_OT_ZNODE) || 2033219089Spjd doi.doi_bonus_type == DMU_OT_ZNODE && 2034168404Spjd doi.doi_bonus_size < sizeof (znode_phys_t)) { 2035219089Spjd sa_buf_rele(*db, tag); 2036219089Spjd return (ENOTSUP); 2037168404Spjd } 2038168404Spjd 2039219089Spjd error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); 2040219089Spjd if (error != 0) { 2041219089Spjd sa_buf_rele(*db, tag); 2042219089Spjd return (error); 2043219089Spjd } 2044168404Spjd 2045168404Spjd return (0); 2046168404Spjd} 2047168404Spjd 2048219089Spjdvoid 2049219089Spjdzfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) 2050168404Spjd{ 2051219089Spjd sa_handle_destroy(hdl); 2052219089Spjd sa_buf_rele(db, tag); 2053219089Spjd} 2054219089Spjd 2055219089Spjd/* 2056219089Spjd * Given an object number, return its parent object number and whether 2057219089Spjd * or not the object is an extended attribute directory. 2058219089Spjd */ 2059219089Spjdstatic int 2060240955Smmzfs_obj_to_pobj(objset_t *osp, sa_handle_t *hdl, sa_attr_type_t *sa_table, 2061240955Smm uint64_t *pobjp, int *is_xattrdir) 2062219089Spjd{ 2063219089Spjd uint64_t parent; 2064219089Spjd uint64_t pflags; 2065219089Spjd uint64_t mode; 2066240955Smm uint64_t parent_mode; 2067219089Spjd sa_bulk_attr_t bulk[3]; 2068240955Smm sa_handle_t *sa_hdl; 2069240955Smm dmu_buf_t *sa_db; 2070219089Spjd int count = 0; 2071219089Spjd int error; 2072219089Spjd 2073219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, 2074219089Spjd &parent, sizeof (parent)); 2075219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, 2076219089Spjd &pflags, sizeof (pflags)); 2077219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2078219089Spjd &mode, sizeof (mode)); 2079219089Spjd 2080219089Spjd if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) 2081219089Spjd return (error); 2082219089Spjd 2083240955Smm /* 2084240955Smm * When a link is removed its parent pointer is not changed and will 2085240955Smm * be invalid. There are two cases where a link is removed but the 2086240955Smm * file stays around, when it goes to the delete queue and when there 2087240955Smm * are additional links. 2088240955Smm */ 2089240955Smm error = zfs_grab_sa_handle(osp, parent, &sa_hdl, &sa_db, FTAG); 2090240955Smm if (error != 0) 2091240955Smm return (error); 2092240955Smm 2093240955Smm error = sa_lookup(sa_hdl, ZPL_MODE, &parent_mode, sizeof (parent_mode)); 2094240955Smm zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2095240955Smm if (error != 0) 2096240955Smm return (error); 2097240955Smm 2098219089Spjd *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); 2099219089Spjd 2100240955Smm /* 2101240955Smm * Extended attributes can be applied to files, directories, etc. 2102240955Smm * Otherwise the parent must be a directory. 2103240955Smm */ 2104240955Smm if (!*is_xattrdir && !S_ISDIR(parent_mode)) 2105240955Smm return (EINVAL); 2106240955Smm 2107240955Smm *pobjp = parent; 2108240955Smm 2109219089Spjd return (0); 2110219089Spjd} 2111219089Spjd 2112219089Spjd/* 2113219089Spjd * Given an object number, return some zpl level statistics 2114219089Spjd */ 2115219089Spjdstatic int 2116219089Spjdzfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, 2117219089Spjd zfs_stat_t *sb) 2118219089Spjd{ 2119219089Spjd sa_bulk_attr_t bulk[4]; 2120219089Spjd int count = 0; 2121219089Spjd 2122219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2123219089Spjd &sb->zs_mode, sizeof (sb->zs_mode)); 2124219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, 2125219089Spjd &sb->zs_gen, sizeof (sb->zs_gen)); 2126219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, 2127219089Spjd &sb->zs_links, sizeof (sb->zs_links)); 2128219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, 2129219089Spjd &sb->zs_ctime, sizeof (sb->zs_ctime)); 2130219089Spjd 2131219089Spjd return (sa_bulk_lookup(hdl, bulk, count)); 2132219089Spjd} 2133219089Spjd 2134219089Spjdstatic int 2135219089Spjdzfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, 2136219089Spjd sa_attr_type_t *sa_table, char *buf, int len) 2137219089Spjd{ 2138219089Spjd sa_handle_t *sa_hdl; 2139219089Spjd sa_handle_t *prevhdl = NULL; 2140219089Spjd dmu_buf_t *prevdb = NULL; 2141219089Spjd dmu_buf_t *sa_db = NULL; 2142168404Spjd char *path = buf + len - 1; 2143168404Spjd int error; 2144168404Spjd 2145168404Spjd *path = '\0'; 2146219089Spjd sa_hdl = hdl; 2147168404Spjd 2148168404Spjd for (;;) { 2149168404Spjd uint64_t pobj; 2150168404Spjd char component[MAXNAMELEN + 2]; 2151168404Spjd size_t complen; 2152168404Spjd int is_xattrdir; 2153168404Spjd 2154219089Spjd if (prevdb) 2155219089Spjd zfs_release_sa_handle(prevhdl, prevdb, FTAG); 2156219089Spjd 2157240955Smm if ((error = zfs_obj_to_pobj(osp, sa_hdl, sa_table, &pobj, 2158168404Spjd &is_xattrdir)) != 0) 2159168404Spjd break; 2160168404Spjd 2161168404Spjd if (pobj == obj) { 2162168404Spjd if (path[0] != '/') 2163168404Spjd *--path = '/'; 2164168404Spjd break; 2165168404Spjd } 2166168404Spjd 2167168404Spjd component[0] = '/'; 2168168404Spjd if (is_xattrdir) { 2169168404Spjd (void) sprintf(component + 1, "<xattrdir>"); 2170168404Spjd } else { 2171185029Spjd error = zap_value_search(osp, pobj, obj, 2172185029Spjd ZFS_DIRENT_OBJ(-1ULL), component + 1); 2173168404Spjd if (error != 0) 2174168404Spjd break; 2175168404Spjd } 2176168404Spjd 2177168404Spjd complen = strlen(component); 2178168404Spjd path -= complen; 2179168404Spjd ASSERT(path >= buf); 2180168404Spjd bcopy(component, path, complen); 2181168404Spjd obj = pobj; 2182219089Spjd 2183219089Spjd if (sa_hdl != hdl) { 2184219089Spjd prevhdl = sa_hdl; 2185219089Spjd prevdb = sa_db; 2186219089Spjd } 2187219089Spjd error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); 2188219089Spjd if (error != 0) { 2189219089Spjd sa_hdl = prevhdl; 2190219089Spjd sa_db = prevdb; 2191219089Spjd break; 2192219089Spjd } 2193168404Spjd } 2194168404Spjd 2195219089Spjd if (sa_hdl != NULL && sa_hdl != hdl) { 2196219089Spjd ASSERT(sa_db != NULL); 2197219089Spjd zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2198219089Spjd } 2199219089Spjd 2200168404Spjd if (error == 0) 2201168404Spjd (void) memmove(buf, path, buf + len - path); 2202219089Spjd 2203168404Spjd return (error); 2204168404Spjd} 2205219089Spjd 2206219089Spjdint 2207219089Spjdzfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) 2208219089Spjd{ 2209219089Spjd sa_attr_type_t *sa_table; 2210219089Spjd sa_handle_t *hdl; 2211219089Spjd dmu_buf_t *db; 2212219089Spjd int error; 2213219089Spjd 2214219089Spjd error = zfs_sa_setup(osp, &sa_table); 2215219089Spjd if (error != 0) 2216219089Spjd return (error); 2217219089Spjd 2218219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2219219089Spjd if (error != 0) 2220219089Spjd return (error); 2221219089Spjd 2222219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2223219089Spjd 2224219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2225219089Spjd return (error); 2226219089Spjd} 2227219089Spjd 2228219089Spjdint 2229219089Spjdzfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, 2230219089Spjd char *buf, int len) 2231219089Spjd{ 2232219089Spjd char *path = buf + len - 1; 2233219089Spjd sa_attr_type_t *sa_table; 2234219089Spjd sa_handle_t *hdl; 2235219089Spjd dmu_buf_t *db; 2236219089Spjd int error; 2237219089Spjd 2238219089Spjd *path = '\0'; 2239219089Spjd 2240219089Spjd error = zfs_sa_setup(osp, &sa_table); 2241219089Spjd if (error != 0) 2242219089Spjd return (error); 2243219089Spjd 2244219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2245219089Spjd if (error != 0) 2246219089Spjd return (error); 2247219089Spjd 2248219089Spjd error = zfs_obj_to_stats_impl(hdl, sa_table, sb); 2249219089Spjd if (error != 0) { 2250219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2251219089Spjd return (error); 2252219089Spjd } 2253219089Spjd 2254219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2255219089Spjd 2256219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2257219089Spjd return (error); 2258219089Spjd} 2259