zfs_znode.c revision 219089
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. 23168404Spjd */ 24168404Spjd 25169195Spjd/* Portions Copyright 2007 Jeremy Teo */ 26169195Spjd 27168404Spjd#ifdef _KERNEL 28168404Spjd#include <sys/types.h> 29168404Spjd#include <sys/param.h> 30168404Spjd#include <sys/time.h> 31168404Spjd#include <sys/systm.h> 32168404Spjd#include <sys/sysmacros.h> 33168404Spjd#include <sys/resource.h> 34168404Spjd#include <sys/mntent.h> 35185029Spjd#include <sys/u8_textprep.h> 36185029Spjd#include <sys/dsl_dataset.h> 37168404Spjd#include <sys/vfs.h> 38168404Spjd#include <sys/vnode.h> 39168404Spjd#include <sys/file.h> 40168404Spjd#include <sys/kmem.h> 41168404Spjd#include <sys/errno.h> 42168404Spjd#include <sys/unistd.h> 43168404Spjd#include <sys/atomic.h> 44168404Spjd#include <sys/zfs_dir.h> 45168404Spjd#include <sys/zfs_acl.h> 46168404Spjd#include <sys/zfs_ioctl.h> 47168404Spjd#include <sys/zfs_rlock.h> 48185029Spjd#include <sys/zfs_fuid.h> 49219089Spjd#include <sys/dnode.h> 50168404Spjd#include <sys/fs/zfs.h> 51185029Spjd#include <sys/kidmap.h> 52168404Spjd#endif /* _KERNEL */ 53168404Spjd 54168404Spjd#include <sys/dmu.h> 55168404Spjd#include <sys/refcount.h> 56168404Spjd#include <sys/stat.h> 57168404Spjd#include <sys/zap.h> 58168404Spjd#include <sys/zfs_znode.h> 59219089Spjd#include <sys/sa.h> 60219089Spjd#include <sys/zfs_sa.h> 61219089Spjd#include <sys/zfs_stat.h> 62168404Spjd#include <sys/refcount.h> 63168404Spjd 64185029Spjd#include "zfs_prop.h" 65219089Spjd#include "zfs_comutil.h" 66185029Spjd 67173268Slulf/* Used by fstat(1). */ 68173268SlulfSYSCTL_INT(_debug_sizeof, OID_AUTO, znode, CTLFLAG_RD, 0, sizeof(znode_t), 69173268Slulf "sizeof(znode_t)"); 70173268Slulf 71168404Spjd/* 72185029Spjd * Define ZNODE_STATS to turn on statistic gathering. By default, it is only 73185029Spjd * turned on when DEBUG is also defined. 74185029Spjd */ 75185029Spjd#ifdef DEBUG 76185029Spjd#define ZNODE_STATS 77185029Spjd#endif /* DEBUG */ 78185029Spjd 79185029Spjd#ifdef ZNODE_STATS 80185029Spjd#define ZNODE_STAT_ADD(stat) ((stat)++) 81185029Spjd#else 82185029Spjd#define ZNODE_STAT_ADD(stat) /* nothing */ 83185029Spjd#endif /* ZNODE_STATS */ 84185029Spjd 85185029Spjd/* 86168404Spjd * Functions needed for userland (ie: libzpool) are not put under 87168404Spjd * #ifdef_KERNEL; the rest of the functions have dependencies 88168404Spjd * (such as VFS logic) that will not compile easily in userland. 89168404Spjd */ 90168404Spjd#ifdef _KERNEL 91210470Smm/* 92210470Smm * Needed to close a small window in zfs_znode_move() that allows the zfsvfs to 93210470Smm * be freed before it can be safely accessed. 94210470Smm */ 95210470Smmkrwlock_t zfsvfs_lock; 96210470Smm 97185029Spjdstatic kmem_cache_t *znode_cache = NULL; 98168404Spjd 99168404Spjd/*ARGSUSED*/ 100168404Spjdstatic void 101185029Spjdznode_evict_error(dmu_buf_t *dbuf, void *user_ptr) 102168404Spjd{ 103185029Spjd /* 104185029Spjd * We should never drop all dbuf refs without first clearing 105185029Spjd * the eviction callback. 106185029Spjd */ 107185029Spjd panic("evicting znode %p\n", user_ptr); 108168404Spjd} 109168404Spjd 110168404Spjdextern struct vop_vector zfs_vnodeops; 111168404Spjdextern struct vop_vector zfs_fifoops; 112209962Smmextern struct vop_vector zfs_shareops; 113168404Spjd 114168404Spjd/* 115168404Spjd * XXX: We cannot use this function as a cache constructor, because 116168404Spjd * there is one global cache for all file systems and we need 117168404Spjd * to pass vfsp here, which is not possible, because argument 118168404Spjd * 'cdrarg' is defined at kmem_cache_create() time. 119168404Spjd */ 120219089Spjd/*ARGSUSED*/ 121168404Spjdstatic int 122185029Spjdzfs_znode_cache_constructor(void *buf, void *arg, int kmflags) 123168404Spjd{ 124168404Spjd znode_t *zp = buf; 125169196Spjd vnode_t *vp; 126185029Spjd vfs_t *vfsp = arg; 127168404Spjd int error; 128168404Spjd 129185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 130185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 131185029Spjd 132199156Spjd if (vfsp != NULL) { 133199156Spjd error = getnewvnode("zfs", vfsp, &zfs_vnodeops, &vp); 134199156Spjd if (error != 0 && (kmflags & KM_NOSLEEP)) 135199156Spjd return (-1); 136199156Spjd ASSERT(error == 0); 137199156Spjd vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 138199156Spjd zp->z_vnode = vp; 139199156Spjd vp->v_data = (caddr_t)zp; 140199156Spjd VN_LOCK_AREC(vp); 141219089Spjd VN_LOCK_ASHARE(vp); 142199156Spjd } else { 143199156Spjd zp->z_vnode = NULL; 144199156Spjd } 145185029Spjd 146185029Spjd list_link_init(&zp->z_link_node); 147185029Spjd 148168404Spjd mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); 149168404Spjd rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); 150168404Spjd rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); 151168404Spjd mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); 152168404Spjd 153168404Spjd mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); 154168404Spjd avl_create(&zp->z_range_avl, zfs_range_compare, 155168404Spjd sizeof (rl_t), offsetof(rl_t, r_node)); 156168404Spjd 157185029Spjd zp->z_dirlocks = NULL; 158211932Smm zp->z_acl_cached = NULL; 159219089Spjd zp->z_moved = 0; 160168404Spjd return (0); 161168404Spjd} 162168404Spjd 163168404Spjd/*ARGSUSED*/ 164168404Spjdstatic void 165185029Spjdzfs_znode_cache_destructor(void *buf, void *arg) 166168404Spjd{ 167168404Spjd znode_t *zp = buf; 168168404Spjd 169185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 170185029Spjd ASSERT(ZTOV(zp) == NULL); 171185029Spjd vn_free(ZTOV(zp)); 172185029Spjd ASSERT(!list_link_active(&zp->z_link_node)); 173168404Spjd mutex_destroy(&zp->z_lock); 174168404Spjd rw_destroy(&zp->z_parent_lock); 175168404Spjd rw_destroy(&zp->z_name_lock); 176168404Spjd mutex_destroy(&zp->z_acl_lock); 177185029Spjd avl_destroy(&zp->z_range_avl); 178168404Spjd mutex_destroy(&zp->z_range_lock); 179168404Spjd 180185029Spjd ASSERT(zp->z_dirlocks == NULL); 181211932Smm ASSERT(zp->z_acl_cached == NULL); 182168404Spjd} 183168404Spjd 184185029Spjd#ifdef ZNODE_STATS 185185029Spjdstatic struct { 186185029Spjd uint64_t zms_zfsvfs_invalid; 187210470Smm uint64_t zms_zfsvfs_recheck1; 188185029Spjd uint64_t zms_zfsvfs_unmounted; 189210470Smm uint64_t zms_zfsvfs_recheck2; 190185029Spjd uint64_t zms_obj_held; 191185029Spjd uint64_t zms_vnode_locked; 192185029Spjd uint64_t zms_not_only_dnlc; 193185029Spjd} znode_move_stats; 194185029Spjd#endif /* ZNODE_STATS */ 195185029Spjd 196219089Spjd#ifdef sun 197185029Spjdstatic void 198185029Spjdzfs_znode_move_impl(znode_t *ozp, znode_t *nzp) 199185029Spjd{ 200185029Spjd vnode_t *vp; 201185029Spjd 202185029Spjd /* Copy fields. */ 203185029Spjd nzp->z_zfsvfs = ozp->z_zfsvfs; 204185029Spjd 205185029Spjd /* Swap vnodes. */ 206185029Spjd vp = nzp->z_vnode; 207185029Spjd nzp->z_vnode = ozp->z_vnode; 208185029Spjd ozp->z_vnode = vp; /* let destructor free the overwritten vnode */ 209185029Spjd ZTOV(ozp)->v_data = ozp; 210185029Spjd ZTOV(nzp)->v_data = nzp; 211185029Spjd 212185029Spjd nzp->z_id = ozp->z_id; 213185029Spjd ASSERT(ozp->z_dirlocks == NULL); /* znode not in use */ 214185029Spjd ASSERT(avl_numnodes(&ozp->z_range_avl) == 0); 215185029Spjd nzp->z_unlinked = ozp->z_unlinked; 216185029Spjd nzp->z_atime_dirty = ozp->z_atime_dirty; 217185029Spjd nzp->z_zn_prefetch = ozp->z_zn_prefetch; 218185029Spjd nzp->z_blksz = ozp->z_blksz; 219185029Spjd nzp->z_seq = ozp->z_seq; 220185029Spjd nzp->z_mapcnt = ozp->z_mapcnt; 221185029Spjd nzp->z_gen = ozp->z_gen; 222185029Spjd nzp->z_sync_cnt = ozp->z_sync_cnt; 223219089Spjd nzp->z_is_sa = ozp->z_is_sa; 224219089Spjd nzp->z_sa_hdl = ozp->z_sa_hdl; 225219089Spjd bcopy(ozp->z_atime, nzp->z_atime, sizeof (uint64_t) * 2); 226219089Spjd nzp->z_links = ozp->z_links; 227219089Spjd nzp->z_size = ozp->z_size; 228219089Spjd nzp->z_pflags = ozp->z_pflags; 229219089Spjd nzp->z_uid = ozp->z_uid; 230219089Spjd nzp->z_gid = ozp->z_gid; 231219089Spjd nzp->z_mode = ozp->z_mode; 232185029Spjd 233211932Smm /* 234211932Smm * Since this is just an idle znode and kmem is already dealing with 235211932Smm * memory pressure, release any cached ACL. 236211932Smm */ 237211932Smm if (ozp->z_acl_cached) { 238211932Smm zfs_acl_free(ozp->z_acl_cached); 239211932Smm ozp->z_acl_cached = NULL; 240211932Smm } 241211932Smm 242219089Spjd sa_set_userp(nzp->z_sa_hdl, nzp); 243185029Spjd 244185029Spjd /* 245185029Spjd * Invalidate the original znode by clearing fields that provide a 246185029Spjd * pointer back to the znode. Set the low bit of the vfs pointer to 247185029Spjd * ensure that zfs_znode_move() recognizes the znode as invalid in any 248185029Spjd * subsequent callback. 249185029Spjd */ 250219089Spjd ozp->z_sa_hdl = NULL; 251185029Spjd POINTER_INVALIDATE(&ozp->z_zfsvfs); 252219089Spjd 253219089Spjd /* 254219089Spjd * Mark the znode. 255219089Spjd */ 256219089Spjd nzp->z_moved = 1; 257219089Spjd ozp->z_moved = (uint8_t)-1; 258185029Spjd} 259185029Spjd 260185029Spjd/*ARGSUSED*/ 261185029Spjdstatic kmem_cbrc_t 262185029Spjdzfs_znode_move(void *buf, void *newbuf, size_t size, void *arg) 263185029Spjd{ 264185029Spjd znode_t *ozp = buf, *nzp = newbuf; 265185029Spjd zfsvfs_t *zfsvfs; 266185029Spjd vnode_t *vp; 267185029Spjd 268185029Spjd /* 269185029Spjd * The znode is on the file system's list of known znodes if the vfs 270185029Spjd * pointer is valid. We set the low bit of the vfs pointer when freeing 271185029Spjd * the znode to invalidate it, and the memory patterns written by kmem 272185029Spjd * (baddcafe and deadbeef) set at least one of the two low bits. A newly 273185029Spjd * created znode sets the vfs pointer last of all to indicate that the 274185029Spjd * znode is known and in a valid state to be moved by this function. 275185029Spjd */ 276185029Spjd zfsvfs = ozp->z_zfsvfs; 277185029Spjd if (!POINTER_IS_VALID(zfsvfs)) { 278185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_invalid); 279185029Spjd return (KMEM_CBRC_DONT_KNOW); 280185029Spjd } 281185029Spjd 282185029Spjd /* 283210470Smm * Close a small window in which it's possible that the filesystem could 284210470Smm * be unmounted and freed, and zfsvfs, though valid in the previous 285210470Smm * statement, could point to unrelated memory by the time we try to 286210470Smm * prevent the filesystem from being unmounted. 287185029Spjd */ 288210470Smm rw_enter(&zfsvfs_lock, RW_WRITER); 289210470Smm if (zfsvfs != ozp->z_zfsvfs) { 290210470Smm rw_exit(&zfsvfs_lock); 291210470Smm ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck1); 292210470Smm return (KMEM_CBRC_DONT_KNOW); 293210470Smm } 294210470Smm 295210470Smm /* 296210470Smm * If the znode is still valid, then so is the file system. We know that 297210470Smm * no valid file system can be freed while we hold zfsvfs_lock, so we 298210470Smm * can safely ensure that the filesystem is not and will not be 299210470Smm * unmounted. The next statement is equivalent to ZFS_ENTER(). 300210470Smm */ 301209962Smm rrw_enter(&zfsvfs->z_teardown_lock, RW_READER, FTAG); 302209962Smm if (zfsvfs->z_unmounted) { 303209962Smm ZFS_EXIT(zfsvfs); 304210470Smm rw_exit(&zfsvfs_lock); 305185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_unmounted); 306185029Spjd return (KMEM_CBRC_DONT_KNOW); 307185029Spjd } 308210470Smm rw_exit(&zfsvfs_lock); 309185029Spjd 310185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 311185029Spjd /* 312185029Spjd * Recheck the vfs pointer in case the znode was removed just before 313185029Spjd * acquiring the lock. 314185029Spjd */ 315185029Spjd if (zfsvfs != ozp->z_zfsvfs) { 316185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 317185029Spjd ZFS_EXIT(zfsvfs); 318210470Smm ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck2); 319185029Spjd return (KMEM_CBRC_DONT_KNOW); 320185029Spjd } 321185029Spjd 322185029Spjd /* 323185029Spjd * At this point we know that as long as we hold z_znodes_lock, the 324185029Spjd * znode cannot be freed and fields within the znode can be safely 325185029Spjd * accessed. Now, prevent a race with zfs_zget(). 326185029Spjd */ 327185029Spjd if (ZFS_OBJ_HOLD_TRYENTER(zfsvfs, ozp->z_id) == 0) { 328185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 329185029Spjd ZFS_EXIT(zfsvfs); 330185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_obj_held); 331185029Spjd return (KMEM_CBRC_LATER); 332185029Spjd } 333185029Spjd 334185029Spjd vp = ZTOV(ozp); 335185029Spjd if (mutex_tryenter(&vp->v_lock) == 0) { 336185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 337185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 338185029Spjd ZFS_EXIT(zfsvfs); 339185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_vnode_locked); 340185029Spjd return (KMEM_CBRC_LATER); 341185029Spjd } 342185029Spjd 343185029Spjd /* Only move znodes that are referenced _only_ by the DNLC. */ 344185029Spjd if (vp->v_count != 1 || !vn_in_dnlc(vp)) { 345185029Spjd mutex_exit(&vp->v_lock); 346185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 347185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 348185029Spjd ZFS_EXIT(zfsvfs); 349185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_not_only_dnlc); 350185029Spjd return (KMEM_CBRC_LATER); 351185029Spjd } 352185029Spjd 353185029Spjd /* 354185029Spjd * The znode is known and in a valid state to move. We're holding the 355185029Spjd * locks needed to execute the critical section. 356185029Spjd */ 357185029Spjd zfs_znode_move_impl(ozp, nzp); 358185029Spjd mutex_exit(&vp->v_lock); 359185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 360185029Spjd 361185029Spjd list_link_replace(&ozp->z_link_node, &nzp->z_link_node); 362185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 363185029Spjd ZFS_EXIT(zfsvfs); 364185029Spjd 365185029Spjd return (KMEM_CBRC_YES); 366185029Spjd} 367185029Spjd#endif /* sun */ 368185029Spjd 369168404Spjdvoid 370168404Spjdzfs_znode_init(void) 371168404Spjd{ 372168404Spjd /* 373168404Spjd * Initialize zcache 374168404Spjd */ 375210470Smm rw_init(&zfsvfs_lock, NULL, RW_DEFAULT, NULL); 376168404Spjd ASSERT(znode_cache == NULL); 377168404Spjd znode_cache = kmem_cache_create("zfs_znode_cache", 378168404Spjd sizeof (znode_t), 0, /* zfs_znode_cache_constructor */ NULL, 379168404Spjd zfs_znode_cache_destructor, NULL, NULL, NULL, 0); 380185029Spjd kmem_cache_set_move(znode_cache, zfs_znode_move); 381168404Spjd} 382168404Spjd 383168404Spjdvoid 384168404Spjdzfs_znode_fini(void) 385168404Spjd{ 386219089Spjd#ifdef sun 387168404Spjd /* 388219089Spjd * Cleanup vfs & vnode ops 389219089Spjd */ 390219089Spjd zfs_remove_op_tables(); 391219089Spjd#endif /* sun */ 392219089Spjd 393219089Spjd /* 394168404Spjd * Cleanup zcache 395168404Spjd */ 396168404Spjd if (znode_cache) 397168404Spjd kmem_cache_destroy(znode_cache); 398168404Spjd znode_cache = NULL; 399210470Smm rw_destroy(&zfsvfs_lock); 400168404Spjd} 401168404Spjd 402219089Spjd#ifdef sun 403219089Spjdstruct vnodeops *zfs_dvnodeops; 404219089Spjdstruct vnodeops *zfs_fvnodeops; 405219089Spjdstruct vnodeops *zfs_symvnodeops; 406219089Spjdstruct vnodeops *zfs_xdvnodeops; 407219089Spjdstruct vnodeops *zfs_evnodeops; 408219089Spjdstruct vnodeops *zfs_sharevnodeops; 409219089Spjd 410219089Spjdvoid 411219089Spjdzfs_remove_op_tables() 412219089Spjd{ 413219089Spjd /* 414219089Spjd * Remove vfs ops 415219089Spjd */ 416219089Spjd ASSERT(zfsfstype); 417219089Spjd (void) vfs_freevfsops_by_type(zfsfstype); 418219089Spjd zfsfstype = 0; 419219089Spjd 420219089Spjd /* 421219089Spjd * Remove vnode ops 422219089Spjd */ 423219089Spjd if (zfs_dvnodeops) 424219089Spjd vn_freevnodeops(zfs_dvnodeops); 425219089Spjd if (zfs_fvnodeops) 426219089Spjd vn_freevnodeops(zfs_fvnodeops); 427219089Spjd if (zfs_symvnodeops) 428219089Spjd vn_freevnodeops(zfs_symvnodeops); 429219089Spjd if (zfs_xdvnodeops) 430219089Spjd vn_freevnodeops(zfs_xdvnodeops); 431219089Spjd if (zfs_evnodeops) 432219089Spjd vn_freevnodeops(zfs_evnodeops); 433219089Spjd if (zfs_sharevnodeops) 434219089Spjd vn_freevnodeops(zfs_sharevnodeops); 435219089Spjd 436219089Spjd zfs_dvnodeops = NULL; 437219089Spjd zfs_fvnodeops = NULL; 438219089Spjd zfs_symvnodeops = NULL; 439219089Spjd zfs_xdvnodeops = NULL; 440219089Spjd zfs_evnodeops = NULL; 441219089Spjd zfs_sharevnodeops = NULL; 442219089Spjd} 443219089Spjd 444219089Spjdextern const fs_operation_def_t zfs_dvnodeops_template[]; 445219089Spjdextern const fs_operation_def_t zfs_fvnodeops_template[]; 446219089Spjdextern const fs_operation_def_t zfs_xdvnodeops_template[]; 447219089Spjdextern const fs_operation_def_t zfs_symvnodeops_template[]; 448219089Spjdextern const fs_operation_def_t zfs_evnodeops_template[]; 449219089Spjdextern const fs_operation_def_t zfs_sharevnodeops_template[]; 450219089Spjd 451168404Spjdint 452219089Spjdzfs_create_op_tables() 453219089Spjd{ 454219089Spjd int error; 455219089Spjd 456219089Spjd /* 457219089Spjd * zfs_dvnodeops can be set if mod_remove() calls mod_installfs() 458219089Spjd * due to a failure to remove the the 2nd modlinkage (zfs_modldrv). 459219089Spjd * In this case we just return as the ops vectors are already set up. 460219089Spjd */ 461219089Spjd if (zfs_dvnodeops) 462219089Spjd return (0); 463219089Spjd 464219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_dvnodeops_template, 465219089Spjd &zfs_dvnodeops); 466219089Spjd if (error) 467219089Spjd return (error); 468219089Spjd 469219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_fvnodeops_template, 470219089Spjd &zfs_fvnodeops); 471219089Spjd if (error) 472219089Spjd return (error); 473219089Spjd 474219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_symvnodeops_template, 475219089Spjd &zfs_symvnodeops); 476219089Spjd if (error) 477219089Spjd return (error); 478219089Spjd 479219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_xdvnodeops_template, 480219089Spjd &zfs_xdvnodeops); 481219089Spjd if (error) 482219089Spjd return (error); 483219089Spjd 484219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_evnodeops_template, 485219089Spjd &zfs_evnodeops); 486219089Spjd if (error) 487219089Spjd return (error); 488219089Spjd 489219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_sharevnodeops_template, 490219089Spjd &zfs_sharevnodeops); 491219089Spjd 492219089Spjd return (error); 493219089Spjd} 494219089Spjd#endif /* sun */ 495219089Spjd 496219089Spjdint 497209962Smmzfs_create_share_dir(zfsvfs_t *zfsvfs, dmu_tx_t *tx) 498168404Spjd{ 499209962Smm zfs_acl_ids_t acl_ids; 500209962Smm vattr_t vattr; 501209962Smm znode_t *sharezp; 502209962Smm vnode_t *vp, vnode; 503209962Smm znode_t *zp; 504209962Smm int error; 505168404Spjd 506209962Smm vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 507209962Smm vattr.va_type = VDIR; 508209962Smm vattr.va_mode = S_IFDIR|0555; 509209962Smm vattr.va_uid = crgetuid(kcred); 510209962Smm vattr.va_gid = crgetgid(kcred); 511168404Spjd 512209962Smm sharezp = kmem_cache_alloc(znode_cache, KM_SLEEP); 513209962Smm zfs_znode_cache_constructor(sharezp, zfsvfs->z_parent->z_vfs, 0); 514219089Spjd ASSERT(!POINTER_IS_VALID(sharezp->z_zfsvfs)); 515219089Spjd sharezp->z_moved = 0; 516209962Smm sharezp->z_unlinked = 0; 517209962Smm sharezp->z_atime_dirty = 0; 518209962Smm sharezp->z_zfsvfs = zfsvfs; 519219089Spjd sharezp->z_is_sa = zfsvfs->z_use_sa; 520168404Spjd 521209962Smm sharezp->z_vnode = &vnode; 522209962Smm vnode.v_data = sharezp; 523185029Spjd 524209962Smm vp = ZTOV(sharezp); 525209962Smm vp->v_type = VDIR; 526168404Spjd 527209962Smm VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, 528209962Smm kcred, NULL, &acl_ids)); 529219089Spjd zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); 530209962Smm ASSERT3P(zp, ==, sharezp); 531209962Smm POINTER_INVALIDATE(&sharezp->z_zfsvfs); 532209962Smm error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, 533209962Smm ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); 534209962Smm zfsvfs->z_shares_dir = sharezp->z_id; 535168404Spjd 536209962Smm zfs_acl_ids_free(&acl_ids); 537209962Smm ZTOV(sharezp)->v_data = NULL; 538209962Smm ZTOV(sharezp)->v_count = 0; 539209962Smm ZTOV(sharezp)->v_holdcnt = 0; 540209962Smm zp->z_vnode = NULL; 541219089Spjd sa_handle_destroy(sharezp->z_sa_hdl); 542209962Smm sharezp->z_vnode = NULL; 543209962Smm kmem_cache_free(znode_cache, sharezp); 544168404Spjd 545209962Smm return (error); 546168404Spjd} 547168404Spjd 548168404Spjd/* 549168404Spjd * define a couple of values we need available 550168404Spjd * for both 64 and 32 bit environments. 551168404Spjd */ 552168404Spjd#ifndef NBITSMINOR64 553168404Spjd#define NBITSMINOR64 32 554168404Spjd#endif 555168404Spjd#ifndef MAXMAJ64 556168404Spjd#define MAXMAJ64 0xffffffffUL 557168404Spjd#endif 558168404Spjd#ifndef MAXMIN64 559168404Spjd#define MAXMIN64 0xffffffffUL 560168404Spjd#endif 561168404Spjd 562168404Spjd/* 563168404Spjd * Create special expldev for ZFS private use. 564168404Spjd * Can't use standard expldev since it doesn't do 565168404Spjd * what we want. The standard expldev() takes a 566168404Spjd * dev32_t in LP64 and expands it to a long dev_t. 567168404Spjd * We need an interface that takes a dev32_t in ILP32 568168404Spjd * and expands it to a long dev_t. 569168404Spjd */ 570168404Spjdstatic uint64_t 571168404Spjdzfs_expldev(dev_t dev) 572168404Spjd{ 573187830Sed return (((uint64_t)major(dev) << NBITSMINOR64) | minor(dev)); 574168404Spjd} 575168404Spjd/* 576168404Spjd * Special cmpldev for ZFS private use. 577168404Spjd * Can't use standard cmpldev since it takes 578168404Spjd * a long dev_t and compresses it to dev32_t in 579168404Spjd * LP64. We need to do a compaction of a long dev_t 580168404Spjd * to a dev32_t in ILP32. 581168404Spjd */ 582168404Spjddev_t 583168404Spjdzfs_cmpldev(uint64_t dev) 584168404Spjd{ 585168958Spjd return (makedev((dev >> NBITSMINOR64), (dev & MAXMIN64))); 586168404Spjd} 587168404Spjd 588185029Spjdstatic void 589219089Spjdzfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp, 590219089Spjd dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) 591185029Spjd{ 592185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs) || (zfsvfs == zp->z_zfsvfs)); 593185029Spjd ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zfsvfs, zp->z_id))); 594185029Spjd 595185029Spjd mutex_enter(&zp->z_lock); 596185029Spjd 597219089Spjd ASSERT(zp->z_sa_hdl == NULL); 598211932Smm ASSERT(zp->z_acl_cached == NULL); 599219089Spjd if (sa_hdl == NULL) { 600219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, zp, 601219089Spjd SA_HDL_SHARED, &zp->z_sa_hdl)); 602219089Spjd } else { 603219089Spjd zp->z_sa_hdl = sa_hdl; 604219089Spjd sa_set_userp(sa_hdl, zp); 605219089Spjd } 606185029Spjd 607219089Spjd zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; 608185029Spjd 609185029Spjd /* 610185029Spjd * Slap on VROOT if we are the root znode 611185029Spjd */ 612185029Spjd if (zp->z_id == zfsvfs->z_root) 613185029Spjd ZTOV(zp)->v_flag |= VROOT; 614185029Spjd 615185029Spjd mutex_exit(&zp->z_lock); 616185029Spjd vn_exists(ZTOV(zp)); 617185029Spjd} 618185029Spjd 619185029Spjdvoid 620185029Spjdzfs_znode_dmu_fini(znode_t *zp) 621185029Spjd{ 622185029Spjd ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zp->z_zfsvfs, zp->z_id)) || 623185029Spjd zp->z_unlinked || 624185029Spjd RW_WRITE_HELD(&zp->z_zfsvfs->z_teardown_inactive_lock)); 625219089Spjd 626219089Spjd sa_handle_destroy(zp->z_sa_hdl); 627219089Spjd zp->z_sa_hdl = NULL; 628185029Spjd} 629185029Spjd 630168404Spjd/* 631168404Spjd * Construct a new znode/vnode and intialize. 632168404Spjd * 633168404Spjd * This does not do a call to dmu_set_user() that is 634168404Spjd * up to the caller to do, in case you don't want to 635168404Spjd * return the znode 636168404Spjd */ 637168404Spjdstatic znode_t * 638219089Spjdzfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, int blksz, 639219089Spjd dmu_object_type_t obj_type, sa_handle_t *hdl) 640168404Spjd{ 641168404Spjd znode_t *zp; 642168404Spjd vnode_t *vp; 643219089Spjd uint64_t mode; 644219089Spjd uint64_t parent; 645219089Spjd sa_bulk_attr_t bulk[9]; 646219089Spjd int count = 0; 647168404Spjd 648168404Spjd zp = kmem_cache_alloc(znode_cache, KM_SLEEP); 649185029Spjd zfs_znode_cache_constructor(zp, zfsvfs->z_parent->z_vfs, 0); 650168404Spjd 651168404Spjd ASSERT(zp->z_dirlocks == NULL); 652185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 653219089Spjd zp->z_moved = 0; 654168404Spjd 655185029Spjd /* 656185029Spjd * Defer setting z_zfsvfs until the znode is ready to be a candidate for 657185029Spjd * the zfs_znode_move() callback. 658185029Spjd */ 659219089Spjd zp->z_sa_hdl = NULL; 660168404Spjd zp->z_unlinked = 0; 661168404Spjd zp->z_atime_dirty = 0; 662168404Spjd zp->z_mapcnt = 0; 663185029Spjd zp->z_id = db->db_object; 664168404Spjd zp->z_blksz = blksz; 665168404Spjd zp->z_seq = 0x7A4653; 666168404Spjd zp->z_sync_cnt = 0; 667168404Spjd 668185029Spjd vp = ZTOV(zp); 669168404Spjd 670219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl); 671185029Spjd 672219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); 673219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, &zp->z_gen, 8); 674219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 675219089Spjd &zp->z_size, 8); 676219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 677219089Spjd &zp->z_links, 8); 678219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 679219089Spjd &zp->z_pflags, 8); 680219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); 681219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 682219089Spjd &zp->z_atime, 16); 683219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 684219089Spjd &zp->z_uid, 8); 685219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 686219089Spjd &zp->z_gid, 8); 687185029Spjd 688219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { 689219089Spjd if (hdl == NULL) 690219089Spjd sa_handle_destroy(zp->z_sa_hdl); 691219089Spjd kmem_cache_free(znode_cache, zp); 692219089Spjd return (NULL); 693219089Spjd } 694168404Spjd 695219089Spjd zp->z_mode = mode; 696219089Spjd 697219089Spjd vp->v_type = IFTOVT((mode_t)mode); 698219089Spjd 699168404Spjd switch (vp->v_type) { 700168404Spjd case VDIR: 701168404Spjd zp->z_zn_prefetch = B_TRUE; /* z_prefetch default is enabled */ 702168404Spjd break; 703168404Spjd case VFIFO: 704168404Spjd vp->v_op = &zfs_fifoops; 705168404Spjd break; 706219089Spjd case VREG: 707219089Spjd if (parent == zfsvfs->z_shares_dir) { 708219089Spjd ASSERT(zp->z_uid == 0 && zp->z_gid == 0); 709209962Smm vp->v_op = &zfs_shareops; 710209962Smm } 711209962Smm break; 712168404Spjd } 713210172Sjhb if (vp->v_type != VFIFO) 714189696Sjhb VN_LOCK_ASHARE(vp); 715168404Spjd 716185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 717185029Spjd list_insert_tail(&zfsvfs->z_all_znodes, zp); 718185029Spjd membar_producer(); 719168404Spjd /* 720185029Spjd * Everything else must be valid before assigning z_zfsvfs makes the 721185029Spjd * znode eligible for zfs_znode_move(). 722168404Spjd */ 723185029Spjd zp->z_zfsvfs = zfsvfs; 724185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 725168404Spjd 726168404Spjd VFS_HOLD(zfsvfs->z_vfs); 727185029Spjd return (zp); 728168404Spjd} 729168404Spjd 730219089Spjdstatic uint64_t empty_xattr; 731219089Spjdstatic uint64_t pad[4]; 732219089Spjdstatic zfs_acl_phys_t acl_phys; 733168404Spjd/* 734168404Spjd * Create a new DMU object to hold a zfs znode. 735168404Spjd * 736168404Spjd * IN: dzp - parent directory for new znode 737168404Spjd * vap - file attributes for new znode 738168404Spjd * tx - dmu transaction id for zap operations 739168404Spjd * cr - credentials of caller 740168404Spjd * flag - flags: 741168404Spjd * IS_ROOT_NODE - new object will be root 742168404Spjd * IS_XATTR - new object is an attribute 743185029Spjd * bonuslen - length of bonus buffer 744185029Spjd * setaclp - File/Dir initial ACL 745185029Spjd * fuidp - Tracks fuid allocation. 746168404Spjd * 747185029Spjd * OUT: zpp - allocated znode 748168404Spjd * 749168404Spjd */ 750168404Spjdvoid 751185029Spjdzfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, 752219089Spjd uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) 753168404Spjd{ 754219089Spjd uint64_t crtime[2], atime[2], mtime[2], ctime[2]; 755219089Spjd uint64_t mode, size, links, parent, pflags; 756219089Spjd uint64_t dzp_pflags = 0; 757219089Spjd uint64_t rdev = 0; 758219089Spjd zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 759185029Spjd dmu_buf_t *db; 760168404Spjd timestruc_t now; 761185029Spjd uint64_t gen, obj; 762168404Spjd int err; 763219089Spjd int bonuslen; 764219089Spjd sa_handle_t *sa_hdl; 765219089Spjd dmu_object_type_t obj_type; 766219089Spjd sa_bulk_attr_t sa_attrs[ZPL_END]; 767219089Spjd int cnt = 0; 768219089Spjd zfs_acl_locator_cb_t locate = { 0 }; 769168404Spjd 770168404Spjd ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE)); 771168404Spjd 772209962Smm if (zfsvfs->z_replay) { 773185029Spjd obj = vap->va_nodeid; 774168404Spjd now = vap->va_ctime; /* see zfs_replay_create() */ 775168404Spjd gen = vap->va_nblocks; /* ditto */ 776168404Spjd } else { 777185029Spjd obj = 0; 778168404Spjd gethrestime(&now); 779168404Spjd gen = dmu_tx_get_txg(tx); 780168404Spjd } 781168404Spjd 782219089Spjd obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; 783219089Spjd bonuslen = (obj_type == DMU_OT_SA) ? 784219089Spjd DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; 785219089Spjd 786168404Spjd /* 787168404Spjd * Create a new DMU object. 788168404Spjd */ 789168404Spjd /* 790168404Spjd * There's currently no mechanism for pre-reading the blocks that will 791219089Spjd * be needed to allocate a new object, so we accept the small chance 792168404Spjd * that there will be an i/o error and we will fail one of the 793168404Spjd * assertions below. 794168404Spjd */ 795168404Spjd if (vap->va_type == VDIR) { 796209962Smm if (zfsvfs->z_replay) { 797185029Spjd err = zap_create_claim_norm(zfsvfs->z_os, obj, 798185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 799219089Spjd obj_type, bonuslen, tx); 800168404Spjd ASSERT3U(err, ==, 0); 801168404Spjd } else { 802185029Spjd obj = zap_create_norm(zfsvfs->z_os, 803185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 804219089Spjd obj_type, bonuslen, tx); 805168404Spjd } 806168404Spjd } else { 807209962Smm if (zfsvfs->z_replay) { 808185029Spjd err = dmu_object_claim(zfsvfs->z_os, obj, 809168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 810219089Spjd obj_type, bonuslen, tx); 811168404Spjd ASSERT3U(err, ==, 0); 812168404Spjd } else { 813185029Spjd obj = dmu_object_alloc(zfsvfs->z_os, 814168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 815219089Spjd obj_type, bonuslen, tx); 816168404Spjd } 817168404Spjd } 818207334Spjd 819207334Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 820219089Spjd VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); 821168404Spjd 822168404Spjd /* 823168404Spjd * If this is the root, fix up the half-initialized parent pointer 824168404Spjd * to reference the just-allocated physical data area. 825168404Spjd */ 826168404Spjd if (flag & IS_ROOT_NODE) { 827185029Spjd dzp->z_id = obj; 828219089Spjd } else { 829219089Spjd dzp_pflags = dzp->z_pflags; 830168404Spjd } 831168404Spjd 832168404Spjd /* 833168404Spjd * If parent is an xattr, so am I. 834168404Spjd */ 835219089Spjd if (dzp_pflags & ZFS_XATTR) { 836168404Spjd flag |= IS_XATTR; 837168404Spjd } 838168404Spjd 839185029Spjd if (zfsvfs->z_use_fuids) 840219089Spjd pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; 841219089Spjd else 842219089Spjd pflags = 0; 843185029Spjd 844168404Spjd if (vap->va_type == VDIR) { 845219089Spjd size = 2; /* contents ("." and "..") */ 846219089Spjd links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; 847219089Spjd } else { 848219089Spjd size = links = 0; 849168404Spjd } 850168404Spjd 851219089Spjd if (vap->va_type == VBLK || vap->va_type == VCHR) { 852219089Spjd rdev = zfs_expldev(vap->va_rdev); 853219089Spjd } 854219089Spjd 855219089Spjd parent = dzp->z_id; 856219089Spjd mode = acl_ids->z_mode; 857168404Spjd if (flag & IS_XATTR) 858219089Spjd pflags |= ZFS_XATTR; 859168404Spjd 860219089Spjd /* 861219089Spjd * No execs denied will be deterimed when zfs_mode_compute() is called. 862219089Spjd */ 863219089Spjd pflags |= acl_ids->z_aclp->z_hints & 864219089Spjd (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| 865219089Spjd ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); 866168404Spjd 867219089Spjd ZFS_TIME_ENCODE(&now, crtime); 868219089Spjd ZFS_TIME_ENCODE(&now, ctime); 869168404Spjd 870168404Spjd if (vap->va_mask & AT_ATIME) { 871219089Spjd ZFS_TIME_ENCODE(&vap->va_atime, atime); 872168404Spjd } else { 873219089Spjd ZFS_TIME_ENCODE(&now, atime); 874168404Spjd } 875168404Spjd 876168404Spjd if (vap->va_mask & AT_MTIME) { 877219089Spjd ZFS_TIME_ENCODE(&vap->va_mtime, mtime); 878168404Spjd } else { 879219089Spjd ZFS_TIME_ENCODE(&now, mtime); 880168404Spjd } 881168404Spjd 882219089Spjd /* Now add in all of the "SA" attributes */ 883219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, 884219089Spjd &sa_hdl)); 885219089Spjd 886219089Spjd /* 887219089Spjd * Setup the array of attributes to be replaced/set on the new file 888219089Spjd * 889219089Spjd * order for DMU_OT_ZNODE is critical since it needs to be constructed 890219089Spjd * in the old znode_phys_t format. Don't change this ordering 891219089Spjd */ 892219089Spjd 893219089Spjd if (obj_type == DMU_OT_ZNODE) { 894219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 895219089Spjd NULL, &atime, 16); 896219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 897219089Spjd NULL, &mtime, 16); 898219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 899219089Spjd NULL, &ctime, 16); 900219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 901219089Spjd NULL, &crtime, 16); 902219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 903219089Spjd NULL, &gen, 8); 904219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 905219089Spjd NULL, &mode, 8); 906219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 907219089Spjd NULL, &size, 8); 908219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 909219089Spjd NULL, &parent, 8); 910219089Spjd } else { 911219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 912219089Spjd NULL, &mode, 8); 913219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 914219089Spjd NULL, &size, 8); 915219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 916219089Spjd NULL, &gen, 8); 917219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 918219089Spjd &acl_ids->z_fuid, 8); 919219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 920219089Spjd &acl_ids->z_fgid, 8); 921219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 922219089Spjd NULL, &parent, 8); 923219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 924219089Spjd NULL, &pflags, 8); 925219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 926219089Spjd NULL, &atime, 16); 927219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 928219089Spjd NULL, &mtime, 16); 929219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 930219089Spjd NULL, &ctime, 16); 931219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 932219089Spjd NULL, &crtime, 16); 933219089Spjd } 934219089Spjd 935219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); 936219089Spjd 937219089Spjd if (obj_type == DMU_OT_ZNODE) { 938219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, 939219089Spjd &empty_xattr, 8); 940219089Spjd } 941219089Spjd if (obj_type == DMU_OT_ZNODE || 942219089Spjd (vap->va_type == VBLK || vap->va_type == VCHR)) { 943219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), 944219089Spjd NULL, &rdev, 8); 945219089Spjd 946219089Spjd } 947219089Spjd if (obj_type == DMU_OT_ZNODE) { 948219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 949219089Spjd NULL, &pflags, 8); 950219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 951219089Spjd &acl_ids->z_fuid, 8); 952219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 953219089Spjd &acl_ids->z_fgid, 8); 954219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, 955219089Spjd sizeof (uint64_t) * 4); 956219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, 957219089Spjd &acl_phys, sizeof (zfs_acl_phys_t)); 958219089Spjd } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { 959219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, 960219089Spjd &acl_ids->z_aclp->z_acl_count, 8); 961219089Spjd locate.cb_aclp = acl_ids->z_aclp; 962219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), 963219089Spjd zfs_acl_data_locator, &locate, 964219089Spjd acl_ids->z_aclp->z_acl_bytes); 965219089Spjd mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, 966219089Spjd acl_ids->z_fuid, acl_ids->z_fgid); 967219089Spjd } 968219089Spjd 969219089Spjd VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); 970219089Spjd 971185029Spjd if (!(flag & IS_ROOT_NODE)) { 972219089Spjd *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); 973219089Spjd ASSERT(*zpp != NULL); 974185029Spjd } else { 975185029Spjd /* 976185029Spjd * If we are creating the root node, the "parent" we 977185029Spjd * passed in is the znode for the root. 978185029Spjd */ 979185029Spjd *zpp = dzp; 980219089Spjd 981219089Spjd (*zpp)->z_sa_hdl = sa_hdl; 982185029Spjd } 983219089Spjd 984219089Spjd (*zpp)->z_pflags = pflags; 985219089Spjd (*zpp)->z_mode = mode; 986219089Spjd 987209962Smm if (vap->va_mask & AT_XVATTR) 988219089Spjd zfs_xvattr_set(*zpp, (xvattr_t *)vap, tx); 989219089Spjd 990219089Spjd if (obj_type == DMU_OT_ZNODE || 991219089Spjd acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { 992219089Spjd err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); 993219089Spjd ASSERT3P(err, ==, 0); 994219089Spjd } 995185029Spjd if (!(flag & IS_ROOT_NODE)) { 996185029Spjd vnode_t *vp; 997168404Spjd 998185029Spjd vp = ZTOV(*zpp); 999185029Spjd vp->v_vflag |= VV_FORCEINSMQ; 1000185029Spjd err = insmntque(vp, zfsvfs->z_vfs); 1001185029Spjd vp->v_vflag &= ~VV_FORCEINSMQ; 1002185029Spjd KASSERT(err == 0, ("insmntque() failed: error %d", err)); 1003185029Spjd } 1004219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1005185029Spjd} 1006168404Spjd 1007219089Spjd/* 1008219089Spjd * zfs_xvattr_set only updates the in-core attributes 1009219089Spjd * it is assumed the caller will be doing an sa_bulk_update 1010219089Spjd * to push the changes out 1011219089Spjd */ 1012185029Spjdvoid 1013219089Spjdzfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) 1014185029Spjd{ 1015185029Spjd xoptattr_t *xoap; 1016168404Spjd 1017185029Spjd xoap = xva_getxoptattr(xvap); 1018185029Spjd ASSERT(xoap); 1019168404Spjd 1020185029Spjd if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { 1021219089Spjd uint64_t times[2]; 1022219089Spjd ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); 1023219089Spjd (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), 1024219089Spjd ×, sizeof (times), tx); 1025185029Spjd XVA_SET_RTN(xvap, XAT_CREATETIME); 1026168404Spjd } 1027185029Spjd if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { 1028219089Spjd ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, 1029219089Spjd zp->z_pflags, tx); 1030185029Spjd XVA_SET_RTN(xvap, XAT_READONLY); 1031185029Spjd } 1032185029Spjd if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { 1033219089Spjd ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, 1034219089Spjd zp->z_pflags, tx); 1035185029Spjd XVA_SET_RTN(xvap, XAT_HIDDEN); 1036185029Spjd } 1037185029Spjd if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { 1038219089Spjd ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, 1039219089Spjd zp->z_pflags, tx); 1040185029Spjd XVA_SET_RTN(xvap, XAT_SYSTEM); 1041185029Spjd } 1042185029Spjd if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { 1043219089Spjd ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, 1044219089Spjd zp->z_pflags, tx); 1045185029Spjd XVA_SET_RTN(xvap, XAT_ARCHIVE); 1046185029Spjd } 1047185029Spjd if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { 1048219089Spjd ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, 1049219089Spjd zp->z_pflags, tx); 1050185029Spjd XVA_SET_RTN(xvap, XAT_IMMUTABLE); 1051185029Spjd } 1052185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { 1053219089Spjd ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, 1054219089Spjd zp->z_pflags, tx); 1055185029Spjd XVA_SET_RTN(xvap, XAT_NOUNLINK); 1056185029Spjd } 1057185029Spjd if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { 1058219089Spjd ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, 1059219089Spjd zp->z_pflags, tx); 1060185029Spjd XVA_SET_RTN(xvap, XAT_APPENDONLY); 1061185029Spjd } 1062185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { 1063219089Spjd ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, 1064219089Spjd zp->z_pflags, tx); 1065185029Spjd XVA_SET_RTN(xvap, XAT_NODUMP); 1066185029Spjd } 1067185029Spjd if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { 1068219089Spjd ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, 1069219089Spjd zp->z_pflags, tx); 1070185029Spjd XVA_SET_RTN(xvap, XAT_OPAQUE); 1071185029Spjd } 1072185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { 1073185029Spjd ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, 1074219089Spjd xoap->xoa_av_quarantined, zp->z_pflags, tx); 1075185029Spjd XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); 1076185029Spjd } 1077185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { 1078219089Spjd ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, 1079219089Spjd zp->z_pflags, tx); 1080185029Spjd XVA_SET_RTN(xvap, XAT_AV_MODIFIED); 1081185029Spjd } 1082185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { 1083219089Spjd zfs_sa_set_scanstamp(zp, xvap, tx); 1084185029Spjd XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); 1085185029Spjd } 1086219089Spjd if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { 1087219089Spjd ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, 1088219089Spjd zp->z_pflags, tx); 1089219089Spjd XVA_SET_RTN(xvap, XAT_REPARSE); 1090219089Spjd } 1091219089Spjd if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { 1092219089Spjd ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, 1093219089Spjd zp->z_pflags, tx); 1094219089Spjd XVA_SET_RTN(xvap, XAT_OFFLINE); 1095219089Spjd } 1096219089Spjd if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { 1097219089Spjd ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, 1098219089Spjd zp->z_pflags, tx); 1099219089Spjd XVA_SET_RTN(xvap, XAT_SPARSE); 1100219089Spjd } 1101168404Spjd} 1102168404Spjd 1103168404Spjdint 1104168404Spjdzfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) 1105168404Spjd{ 1106168404Spjd dmu_object_info_t doi; 1107168404Spjd dmu_buf_t *db; 1108168404Spjd znode_t *zp; 1109219089Spjd int err; 1110219089Spjd sa_handle_t *hdl; 1111219089Spjd int first = 1; 1112168404Spjd 1113168404Spjd *zpp = NULL; 1114219089Spjd 1115185029Spjdagain: 1116168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1117168404Spjd 1118219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1119168404Spjd if (err) { 1120168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1121168404Spjd return (err); 1122168404Spjd } 1123168404Spjd 1124168404Spjd dmu_object_info_from_db(db, &doi); 1125219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1126219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1127219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1128219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1129219089Spjd sa_buf_rele(db, NULL); 1130168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1131168404Spjd return (EINVAL); 1132168404Spjd } 1133168404Spjd 1134219089Spjd hdl = dmu_buf_get_user(db); 1135219089Spjd if (hdl != NULL) { 1136219089Spjd zp = sa_get_userdata(hdl); 1137168404Spjd 1138219089Spjd 1139185029Spjd /* 1140219089Spjd * Since "SA" does immediate eviction we 1141219089Spjd * should never find a sa handle that doesn't 1142219089Spjd * know about the znode. 1143185029Spjd */ 1144219089Spjd 1145219089Spjd ASSERT3P(zp, !=, NULL); 1146219089Spjd 1147219089Spjd mutex_enter(&zp->z_lock); 1148168404Spjd ASSERT3U(zp->z_id, ==, obj_num); 1149168404Spjd if (zp->z_unlinked) { 1150185029Spjd err = ENOENT; 1151168404Spjd } else { 1152219089Spjd vnode_t *vp; 1153197458Spjd int dying = 0; 1154197458Spjd 1155197458Spjd vp = ZTOV(zp); 1156197458Spjd if (vp == NULL) 1157197458Spjd dying = 1; 1158197458Spjd else { 1159197458Spjd VN_HOLD(vp); 1160197131Spjd if ((vp->v_iflag & VI_DOOMED) != 0) { 1161197458Spjd dying = 1; 1162197458Spjd /* 1163197458Spjd * Don't VN_RELE() vnode here, because 1164197458Spjd * it can call vn_lock() which creates 1165197458Spjd * LOR between vnode lock and znode 1166197458Spjd * lock. We will VN_RELE() the vnode 1167197458Spjd * after droping znode lock. 1168197458Spjd */ 1169197458Spjd } 1170197131Spjd } 1171197458Spjd if (dying) { 1172185029Spjd if (first) { 1173185029Spjd ZFS_LOG(1, "dying znode detected (zp=%p)", zp); 1174185029Spjd first = 0; 1175185029Spjd } 1176185029Spjd /* 1177185029Spjd * znode is dying so we can't reuse it, we must 1178185029Spjd * wait until destruction is completed. 1179185029Spjd */ 1180219089Spjd sa_buf_rele(db, NULL); 1181185029Spjd mutex_exit(&zp->z_lock); 1182185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1183197458Spjd if (vp != NULL) 1184197458Spjd VN_RELE(vp); 1185185029Spjd tsleep(zp, 0, "zcollide", 1); 1186185029Spjd goto again; 1187185029Spjd } 1188185029Spjd *zpp = zp; 1189185029Spjd err = 0; 1190168404Spjd } 1191219089Spjd sa_buf_rele(db, NULL); 1192168404Spjd mutex_exit(&zp->z_lock); 1193168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1194185029Spjd return (err); 1195168404Spjd } 1196168404Spjd 1197168404Spjd /* 1198168404Spjd * Not found create new znode/vnode 1199207334Spjd * but only if file exists. 1200207334Spjd * 1201207334Spjd * There is a small window where zfs_vget() could 1202207334Spjd * find this object while a file create is still in 1203219089Spjd * progress. This is checked for in zfs_znode_alloc() 1204219089Spjd * 1205219089Spjd * if zfs_znode_alloc() fails it will drop the hold on the 1206219089Spjd * bonus buffer. 1207168404Spjd */ 1208219089Spjd zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, 1209219089Spjd doi.doi_bonus_type, NULL); 1210219089Spjd if (zp == NULL) { 1211219089Spjd err = ENOENT; 1212219089Spjd } else { 1213219089Spjd *zpp = zp; 1214219089Spjd } 1215219089Spjd if (err == 0) { 1216219089Spjd vnode_t *vp = ZTOV(zp); 1217185029Spjd 1218207334Spjd err = insmntque(vp, zfsvfs->z_vfs); 1219219089Spjd if (err == 0) 1220219089Spjd VOP_UNLOCK(vp, 0); 1221219089Spjd else { 1222219089Spjd zp->z_vnode = NULL; 1223219089Spjd zfs_znode_dmu_fini(zp); 1224219089Spjd zfs_znode_free(zp); 1225219089Spjd *zpp = NULL; 1226219089Spjd } 1227207334Spjd } 1228168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1229207334Spjd return (err); 1230168404Spjd} 1231168404Spjd 1232185029Spjdint 1233185029Spjdzfs_rezget(znode_t *zp) 1234185029Spjd{ 1235185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1236185029Spjd dmu_object_info_t doi; 1237185029Spjd dmu_buf_t *db; 1238185029Spjd uint64_t obj_num = zp->z_id; 1239219089Spjd uint64_t mode, size; 1240219089Spjd sa_bulk_attr_t bulk[8]; 1241185029Spjd int err; 1242219089Spjd int count = 0; 1243219089Spjd uint64_t gen; 1244185029Spjd 1245185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1246185029Spjd 1247219089Spjd mutex_enter(&zp->z_acl_lock); 1248219089Spjd if (zp->z_acl_cached) { 1249219089Spjd zfs_acl_free(zp->z_acl_cached); 1250219089Spjd zp->z_acl_cached = NULL; 1251219089Spjd } 1252219089Spjd 1253219089Spjd mutex_exit(&zp->z_acl_lock); 1254219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1255219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1256185029Spjd if (err) { 1257185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1258185029Spjd return (err); 1259185029Spjd } 1260185029Spjd 1261185029Spjd dmu_object_info_from_db(db, &doi); 1262219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1263219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1264219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1265219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1266219089Spjd sa_buf_rele(db, NULL); 1267185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1268185029Spjd return (EINVAL); 1269185029Spjd } 1270185029Spjd 1271219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); 1272219089Spjd size = zp->z_size; 1273219089Spjd 1274219089Spjd /* reload cached values */ 1275219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, 1276219089Spjd &gen, sizeof (gen)); 1277219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 1278219089Spjd &zp->z_size, sizeof (zp->z_size)); 1279219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 1280219089Spjd &zp->z_links, sizeof (zp->z_links)); 1281219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 1282219089Spjd &zp->z_pflags, sizeof (zp->z_pflags)); 1283219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 1284219089Spjd &zp->z_atime, sizeof (zp->z_atime)); 1285219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 1286219089Spjd &zp->z_uid, sizeof (zp->z_uid)); 1287219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 1288219089Spjd &zp->z_gid, sizeof (zp->z_gid)); 1289219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, 1290219089Spjd &mode, sizeof (mode)); 1291219089Spjd 1292219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { 1293219089Spjd zfs_znode_dmu_fini(zp); 1294185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1295185029Spjd return (EIO); 1296185029Spjd } 1297185029Spjd 1298219089Spjd zp->z_mode = mode; 1299219089Spjd 1300219089Spjd if (gen != zp->z_gen) { 1301219089Spjd zfs_znode_dmu_fini(zp); 1302219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1303219089Spjd return (EIO); 1304211932Smm } 1305211932Smm 1306219089Spjd /* 1307219089Spjd * XXXPJD: Not sure how is that possible, but under heavy 1308219089Spjd * zfs recv -F load it happens that z_gen is the same, but 1309219089Spjd * vnode type is different than znode type. This would mean 1310219089Spjd * that for example regular file was replaced with directory 1311219089Spjd * which has the same object number. 1312219089Spjd */ 1313219089Spjd if (ZTOV(zp) != NULL && 1314219089Spjd ZTOV(zp)->v_type != IFTOVT((mode_t)zp->z_mode)) { 1315219089Spjd zfs_znode_dmu_fini(zp); 1316219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1317219089Spjd return (EIO); 1318219089Spjd } 1319219089Spjd 1320219089Spjd zp->z_unlinked = (zp->z_links == 0); 1321185029Spjd zp->z_blksz = doi.doi_data_block_size; 1322219089Spjd if (zp->z_size != size && ZTOV(zp) != NULL) 1323219089Spjd vnode_pager_setsize(ZTOV(zp), zp->z_size); 1324185029Spjd 1325185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1326185029Spjd 1327185029Spjd return (0); 1328185029Spjd} 1329185029Spjd 1330168404Spjdvoid 1331168404Spjdzfs_znode_delete(znode_t *zp, dmu_tx_t *tx) 1332168404Spjd{ 1333168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1334185029Spjd objset_t *os = zfsvfs->z_os; 1335185029Spjd uint64_t obj = zp->z_id; 1336219089Spjd uint64_t acl_obj = zfs_external_acl(zp); 1337168404Spjd 1338185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 1339219089Spjd if (acl_obj) { 1340219089Spjd VERIFY(!zp->z_is_sa); 1341185029Spjd VERIFY(0 == dmu_object_free(os, acl_obj, tx)); 1342219089Spjd } 1343185029Spjd VERIFY(0 == dmu_object_free(os, obj, tx)); 1344185029Spjd zfs_znode_dmu_fini(zp); 1345185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1346185029Spjd zfs_znode_free(zp); 1347168404Spjd} 1348168404Spjd 1349168404Spjdvoid 1350168404Spjdzfs_zinactive(znode_t *zp) 1351168404Spjd{ 1352168404Spjd vnode_t *vp = ZTOV(zp); 1353168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1354168404Spjd uint64_t z_id = zp->z_id; 1355201406Sdelphij int vfslocked; 1356168404Spjd 1357219089Spjd ASSERT(zp->z_sa_hdl); 1358168404Spjd 1359168404Spjd /* 1360168404Spjd * Don't allow a zfs_zget() while were trying to release this znode 1361168404Spjd */ 1362168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id); 1363168404Spjd 1364168404Spjd mutex_enter(&zp->z_lock); 1365168404Spjd VI_LOCK(vp); 1366168404Spjd if (vp->v_count > 0) { 1367168404Spjd /* 1368168404Spjd * If the hold count is greater than zero, somebody has 1369168404Spjd * obtained a new reference on this znode while we were 1370168404Spjd * processing it here, so we are done. 1371168404Spjd */ 1372168404Spjd VI_UNLOCK(vp); 1373168404Spjd mutex_exit(&zp->z_lock); 1374168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1375168404Spjd return; 1376168404Spjd } 1377168404Spjd VI_UNLOCK(vp); 1378168404Spjd 1379168404Spjd /* 1380168404Spjd * If this was the last reference to a file with no links, 1381168404Spjd * remove the file from the file system. 1382168404Spjd */ 1383168404Spjd if (zp->z_unlinked) { 1384168404Spjd mutex_exit(&zp->z_lock); 1385168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1386168404Spjd ASSERT(vp->v_count == 0); 1387168404Spjd vrecycle(vp, curthread); 1388201406Sdelphij vfslocked = VFS_LOCK_GIANT(zfsvfs->z_vfs); 1389168404Spjd zfs_rmnode(zp); 1390201406Sdelphij VFS_UNLOCK_GIANT(vfslocked); 1391168404Spjd return; 1392168404Spjd } 1393219089Spjd 1394168404Spjd mutex_exit(&zp->z_lock); 1395168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1396168404Spjd} 1397168404Spjd 1398168404Spjdvoid 1399168404Spjdzfs_znode_free(znode_t *zp) 1400168404Spjd{ 1401168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1402168404Spjd 1403185029Spjd ASSERT(ZTOV(zp) == NULL); 1404219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1405168404Spjd mutex_enter(&zfsvfs->z_znodes_lock); 1406185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 1407168404Spjd list_remove(&zfsvfs->z_all_znodes, zp); 1408168404Spjd mutex_exit(&zfsvfs->z_znodes_lock); 1409168404Spjd 1410211932Smm if (zp->z_acl_cached) { 1411211932Smm zfs_acl_free(zp->z_acl_cached); 1412211932Smm zp->z_acl_cached = NULL; 1413211932Smm } 1414211932Smm 1415168404Spjd kmem_cache_free(znode_cache, zp); 1416185029Spjd 1417185029Spjd VFS_RELE(zfsvfs->z_vfs); 1418168404Spjd} 1419168404Spjd 1420168404Spjdvoid 1421219089Spjdzfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], 1422219089Spjd uint64_t ctime[2], boolean_t have_tx) 1423168404Spjd{ 1424168404Spjd timestruc_t now; 1425168404Spjd 1426168404Spjd gethrestime(&now); 1427168404Spjd 1428219089Spjd if (have_tx) { /* will sa_bulk_update happen really soon? */ 1429168404Spjd zp->z_atime_dirty = 0; 1430168404Spjd zp->z_seq++; 1431168404Spjd } else { 1432168404Spjd zp->z_atime_dirty = 1; 1433168404Spjd } 1434168404Spjd 1435219089Spjd if (flag & AT_ATIME) { 1436219089Spjd ZFS_TIME_ENCODE(&now, zp->z_atime); 1437219089Spjd } 1438168404Spjd 1439185029Spjd if (flag & AT_MTIME) { 1440219089Spjd ZFS_TIME_ENCODE(&now, mtime); 1441219089Spjd if (zp->z_zfsvfs->z_use_fuids) { 1442219089Spjd zp->z_pflags |= (ZFS_ARCHIVE | 1443219089Spjd ZFS_AV_MODIFIED); 1444219089Spjd } 1445185029Spjd } 1446168404Spjd 1447185029Spjd if (flag & AT_CTIME) { 1448219089Spjd ZFS_TIME_ENCODE(&now, ctime); 1449185029Spjd if (zp->z_zfsvfs->z_use_fuids) 1450219089Spjd zp->z_pflags |= ZFS_ARCHIVE; 1451185029Spjd } 1452168404Spjd} 1453168404Spjd 1454168404Spjd/* 1455168404Spjd * Grow the block size for a file. 1456168404Spjd * 1457168404Spjd * IN: zp - znode of file to free data in. 1458168404Spjd * size - requested block size 1459168404Spjd * tx - open transaction. 1460168404Spjd * 1461168404Spjd * NOTE: this function assumes that the znode is write locked. 1462168404Spjd */ 1463168404Spjdvoid 1464168404Spjdzfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) 1465168404Spjd{ 1466168404Spjd int error; 1467168404Spjd u_longlong_t dummy; 1468168404Spjd 1469168404Spjd if (size <= zp->z_blksz) 1470168404Spjd return; 1471168404Spjd /* 1472168404Spjd * If the file size is already greater than the current blocksize, 1473168404Spjd * we will not grow. If there is more than one block in a file, 1474168404Spjd * the blocksize cannot change. 1475168404Spjd */ 1476219089Spjd if (zp->z_blksz && zp->z_size > zp->z_blksz) 1477168404Spjd return; 1478168404Spjd 1479168404Spjd error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id, 1480168404Spjd size, 0, tx); 1481219089Spjd 1482168404Spjd if (error == ENOTSUP) 1483168404Spjd return; 1484168404Spjd ASSERT3U(error, ==, 0); 1485168404Spjd 1486168404Spjd /* What blocksize did we actually get? */ 1487219089Spjd dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); 1488168404Spjd} 1489168404Spjd 1490219089Spjd#ifdef sun 1491168404Spjd/* 1492219089Spjd * This is a dummy interface used when pvn_vplist_dirty() should *not* 1493219089Spjd * be calling back into the fs for a putpage(). E.g.: when truncating 1494219089Spjd * a file, the pages being "thrown away* don't need to be written out. 1495219089Spjd */ 1496219089Spjd/* ARGSUSED */ 1497219089Spjdstatic int 1498219089Spjdzfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, 1499219089Spjd int flags, cred_t *cr) 1500219089Spjd{ 1501219089Spjd ASSERT(0); 1502219089Spjd return (0); 1503219089Spjd} 1504219089Spjd#endif /* sun */ 1505219089Spjd 1506219089Spjd/* 1507185029Spjd * Increase the file length 1508168404Spjd * 1509168404Spjd * IN: zp - znode of file to free data in. 1510185029Spjd * end - new end-of-file 1511168404Spjd * 1512168404Spjd * RETURN: 0 if success 1513168404Spjd * error code if failure 1514168404Spjd */ 1515185029Spjdstatic int 1516185029Spjdzfs_extend(znode_t *zp, uint64_t end) 1517168404Spjd{ 1518185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1519168404Spjd dmu_tx_t *tx; 1520168404Spjd rl_t *rl; 1521185029Spjd uint64_t newblksz; 1522168404Spjd int error; 1523168404Spjd 1524168404Spjd /* 1525185029Spjd * We will change zp_size, lock the whole file. 1526168404Spjd */ 1527185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1528168404Spjd 1529168404Spjd /* 1530168404Spjd * Nothing to do if file already at desired length. 1531168404Spjd */ 1532219089Spjd if (end <= zp->z_size) { 1533168404Spjd zfs_range_unlock(rl); 1534168404Spjd return (0); 1535168404Spjd } 1536185029Spjdtop: 1537168404Spjd tx = dmu_tx_create(zfsvfs->z_os); 1538219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1539219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1540185029Spjd if (end > zp->z_blksz && 1541168404Spjd (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { 1542168404Spjd /* 1543168404Spjd * We are growing the file past the current block size. 1544168404Spjd */ 1545168404Spjd if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) { 1546168404Spjd ASSERT(!ISP2(zp->z_blksz)); 1547185029Spjd newblksz = MIN(end, SPA_MAXBLOCKSIZE); 1548168404Spjd } else { 1549185029Spjd newblksz = MIN(end, zp->z_zfsvfs->z_max_blksz); 1550168404Spjd } 1551185029Spjd dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); 1552185029Spjd } else { 1553185029Spjd newblksz = 0; 1554168404Spjd } 1555168404Spjd 1556209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1557168404Spjd if (error) { 1558209962Smm if (error == ERESTART) { 1559168404Spjd dmu_tx_wait(tx); 1560185029Spjd dmu_tx_abort(tx); 1561185029Spjd goto top; 1562185029Spjd } 1563168404Spjd dmu_tx_abort(tx); 1564168404Spjd zfs_range_unlock(rl); 1565168404Spjd return (error); 1566168404Spjd } 1567168404Spjd 1568185029Spjd if (newblksz) 1569185029Spjd zfs_grow_blocksize(zp, newblksz, tx); 1570168404Spjd 1571219089Spjd zp->z_size = end; 1572168404Spjd 1573219089Spjd VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), 1574219089Spjd &zp->z_size, sizeof (zp->z_size), tx)); 1575219089Spjd 1576219089Spjd vnode_pager_setsize(ZTOV(zp), end); 1577219089Spjd 1578185029Spjd zfs_range_unlock(rl); 1579168404Spjd 1580185029Spjd dmu_tx_commit(tx); 1581185029Spjd 1582185029Spjd return (0); 1583185029Spjd} 1584185029Spjd 1585185029Spjd/* 1586185029Spjd * Free space in a file. 1587185029Spjd * 1588185029Spjd * IN: zp - znode of file to free data in. 1589185029Spjd * off - start of section to free. 1590185029Spjd * len - length of section to free. 1591185029Spjd * 1592185029Spjd * RETURN: 0 if success 1593185029Spjd * error code if failure 1594185029Spjd */ 1595185029Spjdstatic int 1596185029Spjdzfs_free_range(znode_t *zp, uint64_t off, uint64_t len) 1597185029Spjd{ 1598185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1599185029Spjd rl_t *rl; 1600185029Spjd int error; 1601185029Spjd 1602185029Spjd /* 1603185029Spjd * Lock the range being freed. 1604185029Spjd */ 1605185029Spjd rl = zfs_range_lock(zp, off, len, RL_WRITER); 1606185029Spjd 1607185029Spjd /* 1608185029Spjd * Nothing to do if file already at desired length. 1609185029Spjd */ 1610219089Spjd if (off >= zp->z_size) { 1611185029Spjd zfs_range_unlock(rl); 1612185029Spjd return (0); 1613168404Spjd } 1614168404Spjd 1615219089Spjd if (off + len > zp->z_size) 1616219089Spjd len = zp->z_size - off; 1617185029Spjd 1618185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); 1619185029Spjd 1620185029Spjd if (error == 0) { 1621185029Spjd /* 1622185029Spjd * In FreeBSD we cannot free block in the middle of a file, 1623219089Spjd * but only at the end of a file, so this code path should 1624219089Spjd * never happen. 1625185029Spjd */ 1626185029Spjd vnode_pager_setsize(ZTOV(zp), off); 1627168404Spjd } 1628168404Spjd 1629168404Spjd zfs_range_unlock(rl); 1630168404Spjd 1631185029Spjd return (error); 1632185029Spjd} 1633185029Spjd 1634185029Spjd/* 1635185029Spjd * Truncate a file 1636185029Spjd * 1637185029Spjd * IN: zp - znode of file to free data in. 1638185029Spjd * end - new end-of-file. 1639185029Spjd * 1640185029Spjd * RETURN: 0 if success 1641185029Spjd * error code if failure 1642185029Spjd */ 1643185029Spjdstatic int 1644185029Spjdzfs_trunc(znode_t *zp, uint64_t end) 1645185029Spjd{ 1646185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1647185029Spjd vnode_t *vp = ZTOV(zp); 1648185029Spjd dmu_tx_t *tx; 1649185029Spjd rl_t *rl; 1650185029Spjd int error; 1651219089Spjd sa_bulk_attr_t bulk[2]; 1652219089Spjd int count = 0; 1653185029Spjd 1654185029Spjd /* 1655185029Spjd * We will change zp_size, lock the whole file. 1656185029Spjd */ 1657185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1658185029Spjd 1659185029Spjd /* 1660185029Spjd * Nothing to do if file already at desired length. 1661185029Spjd */ 1662219089Spjd if (end >= zp->z_size) { 1663185029Spjd zfs_range_unlock(rl); 1664185029Spjd return (0); 1665185029Spjd } 1666185029Spjd 1667185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1); 1668185029Spjd if (error) { 1669185029Spjd zfs_range_unlock(rl); 1670185029Spjd return (error); 1671185029Spjd } 1672185029Spjdtop: 1673185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1674219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1675219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1676209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1677185029Spjd if (error) { 1678209962Smm if (error == ERESTART) { 1679185029Spjd dmu_tx_wait(tx); 1680185029Spjd dmu_tx_abort(tx); 1681185029Spjd goto top; 1682185029Spjd } 1683185029Spjd dmu_tx_abort(tx); 1684185029Spjd zfs_range_unlock(rl); 1685185029Spjd return (error); 1686185029Spjd } 1687185029Spjd 1688219089Spjd zp->z_size = end; 1689219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), 1690219089Spjd NULL, &zp->z_size, sizeof (zp->z_size)); 1691185029Spjd 1692219089Spjd if (end == 0) { 1693219089Spjd zp->z_pflags &= ~ZFS_SPARSE; 1694219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1695219089Spjd NULL, &zp->z_pflags, 8); 1696219089Spjd } 1697219089Spjd VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); 1698219089Spjd 1699168404Spjd dmu_tx_commit(tx); 1700168404Spjd 1701168404Spjd /* 1702168404Spjd * Clear any mapped pages in the truncated region. This has to 1703168404Spjd * happen outside of the transaction to avoid the possibility of 1704168404Spjd * a deadlock with someone trying to push a page that we are 1705168404Spjd * about to invalidate. 1706168404Spjd */ 1707185029Spjd vnode_pager_setsize(vp, end); 1708168404Spjd 1709209962Smm zfs_range_unlock(rl); 1710209962Smm 1711168404Spjd return (0); 1712168404Spjd} 1713168404Spjd 1714185029Spjd/* 1715185029Spjd * Free space in a file 1716185029Spjd * 1717185029Spjd * IN: zp - znode of file to free data in. 1718185029Spjd * off - start of range 1719185029Spjd * len - end of range (0 => EOF) 1720185029Spjd * flag - current file open mode flags. 1721185029Spjd * log - TRUE if this action should be logged 1722185029Spjd * 1723185029Spjd * RETURN: 0 if success 1724185029Spjd * error code if failure 1725185029Spjd */ 1726185029Spjdint 1727185029Spjdzfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) 1728185029Spjd{ 1729185029Spjd vnode_t *vp = ZTOV(zp); 1730185029Spjd dmu_tx_t *tx; 1731185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1732185029Spjd zilog_t *zilog = zfsvfs->z_log; 1733219089Spjd uint64_t mode; 1734219089Spjd uint64_t mtime[2], ctime[2]; 1735219089Spjd sa_bulk_attr_t bulk[3]; 1736219089Spjd int count = 0; 1737185029Spjd int error; 1738185029Spjd 1739219089Spjd if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, 1740219089Spjd sizeof (mode))) != 0) 1741219089Spjd return (error); 1742219089Spjd 1743219089Spjd if (off > zp->z_size) { 1744185029Spjd error = zfs_extend(zp, off+len); 1745185029Spjd if (error == 0 && log) 1746185029Spjd goto log; 1747185029Spjd else 1748185029Spjd return (error); 1749185029Spjd } 1750185029Spjd 1751219089Spjd /* 1752219089Spjd * Check for any locks in the region to be freed. 1753219089Spjd */ 1754219089Spjd 1755219089Spjd if (MANDLOCK(vp, (mode_t)mode)) { 1756219089Spjd uint64_t length = (len ? len : zp->z_size - off); 1757219089Spjd if (error = chklock(vp, FWRITE, off, length, flag, NULL)) 1758219089Spjd return (error); 1759219089Spjd } 1760219089Spjd 1761185029Spjd if (len == 0) { 1762185029Spjd error = zfs_trunc(zp, off); 1763185029Spjd } else { 1764185029Spjd if ((error = zfs_free_range(zp, off, len)) == 0 && 1765219089Spjd off + len > zp->z_size) 1766185029Spjd error = zfs_extend(zp, off+len); 1767185029Spjd } 1768185029Spjd if (error || !log) 1769185029Spjd return (error); 1770185029Spjdlog: 1771185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1772219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1773219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1774209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1775185029Spjd if (error) { 1776209962Smm if (error == ERESTART) { 1777185029Spjd dmu_tx_wait(tx); 1778185029Spjd dmu_tx_abort(tx); 1779185029Spjd goto log; 1780185029Spjd } 1781185029Spjd dmu_tx_abort(tx); 1782185029Spjd return (error); 1783185029Spjd } 1784185029Spjd 1785219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); 1786219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); 1787219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1788219089Spjd NULL, &zp->z_pflags, 8); 1789219089Spjd zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); 1790219089Spjd error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); 1791219089Spjd ASSERT(error == 0); 1792219089Spjd 1793185029Spjd zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); 1794185029Spjd 1795185029Spjd dmu_tx_commit(tx); 1796185029Spjd return (0); 1797185029Spjd} 1798185029Spjd 1799168404Spjdvoid 1800185029Spjdzfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) 1801168404Spjd{ 1802168404Spjd zfsvfs_t zfsvfs; 1803219089Spjd uint64_t moid, obj, sa_obj, version; 1804185029Spjd uint64_t sense = ZFS_CASE_SENSITIVE; 1805185029Spjd uint64_t norm = 0; 1806185029Spjd nvpair_t *elem; 1807168404Spjd int error; 1808207334Spjd int i; 1809168404Spjd znode_t *rootzp = NULL; 1810199156Spjd vnode_t vnode; 1811168404Spjd vattr_t vattr; 1812185029Spjd znode_t *zp; 1813209962Smm zfs_acl_ids_t acl_ids; 1814168404Spjd 1815168404Spjd /* 1816168404Spjd * First attempt to create master node. 1817168404Spjd */ 1818168404Spjd /* 1819168404Spjd * In an empty objset, there are no blocks to read and thus 1820168404Spjd * there can be no i/o errors (which we assert below). 1821168404Spjd */ 1822168404Spjd moid = MASTER_NODE_OBJ; 1823168404Spjd error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, 1824168404Spjd DMU_OT_NONE, 0, tx); 1825168404Spjd ASSERT(error == 0); 1826168404Spjd 1827168404Spjd /* 1828168404Spjd * Set starting attributes. 1829168404Spjd */ 1830219089Spjd version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); 1831185029Spjd elem = NULL; 1832185029Spjd while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { 1833185029Spjd /* For the moment we expect all zpl props to be uint64_ts */ 1834185029Spjd uint64_t val; 1835185029Spjd char *name; 1836168404Spjd 1837185029Spjd ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); 1838185029Spjd VERIFY(nvpair_value_uint64(elem, &val) == 0); 1839185029Spjd name = nvpair_name(elem); 1840185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { 1841209962Smm if (val < version) 1842209962Smm version = val; 1843185029Spjd } else { 1844185029Spjd error = zap_update(os, moid, name, 8, 1, &val, tx); 1845185029Spjd } 1846185029Spjd ASSERT(error == 0); 1847185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) 1848185029Spjd norm = val; 1849185029Spjd else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) 1850185029Spjd sense = val; 1851185029Spjd } 1852185029Spjd ASSERT(version != 0); 1853209962Smm error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); 1854168404Spjd 1855168404Spjd /* 1856219089Spjd * Create zap object used for SA attribute registration 1857219089Spjd */ 1858219089Spjd 1859219089Spjd if (version >= ZPL_VERSION_SA) { 1860219089Spjd sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, 1861219089Spjd DMU_OT_NONE, 0, tx); 1862219089Spjd error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); 1863219089Spjd ASSERT(error == 0); 1864219089Spjd } else { 1865219089Spjd sa_obj = 0; 1866219089Spjd } 1867219089Spjd /* 1868168404Spjd * Create a delete queue. 1869168404Spjd */ 1870209962Smm obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); 1871168404Spjd 1872209962Smm error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); 1873168404Spjd ASSERT(error == 0); 1874168404Spjd 1875168404Spjd /* 1876168404Spjd * Create root znode. Create minimal znode/vnode/zfsvfs 1877168404Spjd * to allow zfs_mknode to work. 1878168404Spjd */ 1879185029Spjd VATTR_NULL(&vattr); 1880168404Spjd vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 1881168404Spjd vattr.va_type = VDIR; 1882168404Spjd vattr.va_mode = S_IFDIR|0755; 1883185029Spjd vattr.va_uid = crgetuid(cr); 1884185029Spjd vattr.va_gid = crgetgid(cr); 1885168404Spjd 1886219089Spjd bzero(&zfsvfs, sizeof (zfsvfs_t)); 1887219089Spjd 1888168404Spjd rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); 1889199156Spjd zfs_znode_cache_constructor(rootzp, NULL, 0); 1890219089Spjd ASSERT(!POINTER_IS_VALID(rootzp->z_zfsvfs)); 1891219089Spjd rootzp->z_moved = 0; 1892168404Spjd rootzp->z_unlinked = 0; 1893168404Spjd rootzp->z_atime_dirty = 0; 1894219089Spjd rootzp->z_is_sa = USE_SA(version, os); 1895168404Spjd 1896199156Spjd vnode.v_type = VDIR; 1897199156Spjd vnode.v_data = rootzp; 1898199156Spjd rootzp->z_vnode = &vnode; 1899185029Spjd 1900168404Spjd zfsvfs.z_os = os; 1901168404Spjd zfsvfs.z_parent = &zfsvfs; 1902185029Spjd zfsvfs.z_version = version; 1903185029Spjd zfsvfs.z_use_fuids = USE_FUIDS(version, os); 1904219089Spjd zfsvfs.z_use_sa = USE_SA(version, os); 1905185029Spjd zfsvfs.z_norm = norm; 1906219089Spjd 1907219089Spjd error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, 1908219089Spjd &zfsvfs.z_attr_table); 1909219089Spjd 1910219089Spjd ASSERT(error == 0); 1911219089Spjd 1912185029Spjd /* 1913185029Spjd * Fold case on file systems that are always or sometimes case 1914185029Spjd * insensitive. 1915185029Spjd */ 1916185029Spjd if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) 1917185029Spjd zfsvfs.z_norm |= U8_TEXTPREP_TOUPPER; 1918168404Spjd 1919168404Spjd mutex_init(&zfsvfs.z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); 1920168404Spjd list_create(&zfsvfs.z_all_znodes, sizeof (znode_t), 1921168404Spjd offsetof(znode_t, z_link_node)); 1922168404Spjd 1923207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1924207334Spjd mutex_init(&zfsvfs.z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); 1925207334Spjd 1926185029Spjd rootzp->z_zfsvfs = &zfsvfs; 1927209962Smm VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, 1928209962Smm cr, NULL, &acl_ids)); 1929219089Spjd zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); 1930185029Spjd ASSERT3P(zp, ==, rootzp); 1931185029Spjd error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); 1932168404Spjd ASSERT(error == 0); 1933209962Smm zfs_acl_ids_free(&acl_ids); 1934185029Spjd POINTER_INVALIDATE(&rootzp->z_zfsvfs); 1935168404Spjd 1936219089Spjd sa_handle_destroy(rootzp->z_sa_hdl); 1937209962Smm rootzp->z_vnode = NULL; 1938209962Smm kmem_cache_free(znode_cache, rootzp); 1939209962Smm 1940209962Smm /* 1941209962Smm * Create shares directory 1942209962Smm */ 1943209962Smm 1944209962Smm error = zfs_create_share_dir(&zfsvfs, tx); 1945209962Smm 1946209962Smm ASSERT(error == 0); 1947209962Smm 1948207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1949207334Spjd mutex_destroy(&zfsvfs.z_hold_mtx[i]); 1950168404Spjd} 1951185029Spjd 1952168404Spjd#endif /* _KERNEL */ 1953219089Spjd 1954168404Spjdstatic int 1955219089Spjdzfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) 1956168404Spjd{ 1957219089Spjd uint64_t sa_obj = 0; 1958219089Spjd int error; 1959219089Spjd 1960219089Spjd error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); 1961219089Spjd if (error != 0 && error != ENOENT) 1962219089Spjd return (error); 1963219089Spjd 1964219089Spjd error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); 1965219089Spjd return (error); 1966219089Spjd} 1967219089Spjd 1968219089Spjdstatic int 1969219089Spjdzfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, 1970219089Spjd dmu_buf_t **db, void *tag) 1971219089Spjd{ 1972168404Spjd dmu_object_info_t doi; 1973168404Spjd int error; 1974168404Spjd 1975219089Spjd if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) 1976168404Spjd return (error); 1977168404Spjd 1978219089Spjd dmu_object_info_from_db(*db, &doi); 1979219089Spjd if ((doi.doi_bonus_type != DMU_OT_SA && 1980219089Spjd doi.doi_bonus_type != DMU_OT_ZNODE) || 1981219089Spjd doi.doi_bonus_type == DMU_OT_ZNODE && 1982168404Spjd doi.doi_bonus_size < sizeof (znode_phys_t)) { 1983219089Spjd sa_buf_rele(*db, tag); 1984219089Spjd return (ENOTSUP); 1985168404Spjd } 1986168404Spjd 1987219089Spjd error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); 1988219089Spjd if (error != 0) { 1989219089Spjd sa_buf_rele(*db, tag); 1990219089Spjd return (error); 1991219089Spjd } 1992168404Spjd 1993168404Spjd return (0); 1994168404Spjd} 1995168404Spjd 1996219089Spjdvoid 1997219089Spjdzfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) 1998168404Spjd{ 1999219089Spjd sa_handle_destroy(hdl); 2000219089Spjd sa_buf_rele(db, tag); 2001219089Spjd} 2002219089Spjd 2003219089Spjd/* 2004219089Spjd * Given an object number, return its parent object number and whether 2005219089Spjd * or not the object is an extended attribute directory. 2006219089Spjd */ 2007219089Spjdstatic int 2008219089Spjdzfs_obj_to_pobj(sa_handle_t *hdl, sa_attr_type_t *sa_table, uint64_t *pobjp, 2009219089Spjd int *is_xattrdir) 2010219089Spjd{ 2011219089Spjd uint64_t parent; 2012219089Spjd uint64_t pflags; 2013219089Spjd uint64_t mode; 2014219089Spjd sa_bulk_attr_t bulk[3]; 2015219089Spjd int count = 0; 2016219089Spjd int error; 2017219089Spjd 2018219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, 2019219089Spjd &parent, sizeof (parent)); 2020219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, 2021219089Spjd &pflags, sizeof (pflags)); 2022219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2023219089Spjd &mode, sizeof (mode)); 2024219089Spjd 2025219089Spjd if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) 2026219089Spjd return (error); 2027219089Spjd 2028219089Spjd *pobjp = parent; 2029219089Spjd *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); 2030219089Spjd 2031219089Spjd return (0); 2032219089Spjd} 2033219089Spjd 2034219089Spjd/* 2035219089Spjd * Given an object number, return some zpl level statistics 2036219089Spjd */ 2037219089Spjdstatic int 2038219089Spjdzfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, 2039219089Spjd zfs_stat_t *sb) 2040219089Spjd{ 2041219089Spjd sa_bulk_attr_t bulk[4]; 2042219089Spjd int count = 0; 2043219089Spjd 2044219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2045219089Spjd &sb->zs_mode, sizeof (sb->zs_mode)); 2046219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, 2047219089Spjd &sb->zs_gen, sizeof (sb->zs_gen)); 2048219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, 2049219089Spjd &sb->zs_links, sizeof (sb->zs_links)); 2050219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, 2051219089Spjd &sb->zs_ctime, sizeof (sb->zs_ctime)); 2052219089Spjd 2053219089Spjd return (sa_bulk_lookup(hdl, bulk, count)); 2054219089Spjd} 2055219089Spjd 2056219089Spjdstatic int 2057219089Spjdzfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, 2058219089Spjd sa_attr_type_t *sa_table, char *buf, int len) 2059219089Spjd{ 2060219089Spjd sa_handle_t *sa_hdl; 2061219089Spjd sa_handle_t *prevhdl = NULL; 2062219089Spjd dmu_buf_t *prevdb = NULL; 2063219089Spjd dmu_buf_t *sa_db = NULL; 2064168404Spjd char *path = buf + len - 1; 2065168404Spjd int error; 2066168404Spjd 2067168404Spjd *path = '\0'; 2068219089Spjd sa_hdl = hdl; 2069168404Spjd 2070168404Spjd for (;;) { 2071168404Spjd uint64_t pobj; 2072168404Spjd char component[MAXNAMELEN + 2]; 2073168404Spjd size_t complen; 2074168404Spjd int is_xattrdir; 2075168404Spjd 2076219089Spjd if (prevdb) 2077219089Spjd zfs_release_sa_handle(prevhdl, prevdb, FTAG); 2078219089Spjd 2079219089Spjd if ((error = zfs_obj_to_pobj(sa_hdl, sa_table, &pobj, 2080168404Spjd &is_xattrdir)) != 0) 2081168404Spjd break; 2082168404Spjd 2083168404Spjd if (pobj == obj) { 2084168404Spjd if (path[0] != '/') 2085168404Spjd *--path = '/'; 2086168404Spjd break; 2087168404Spjd } 2088168404Spjd 2089168404Spjd component[0] = '/'; 2090168404Spjd if (is_xattrdir) { 2091168404Spjd (void) sprintf(component + 1, "<xattrdir>"); 2092168404Spjd } else { 2093185029Spjd error = zap_value_search(osp, pobj, obj, 2094185029Spjd ZFS_DIRENT_OBJ(-1ULL), component + 1); 2095168404Spjd if (error != 0) 2096168404Spjd break; 2097168404Spjd } 2098168404Spjd 2099168404Spjd complen = strlen(component); 2100168404Spjd path -= complen; 2101168404Spjd ASSERT(path >= buf); 2102168404Spjd bcopy(component, path, complen); 2103168404Spjd obj = pobj; 2104219089Spjd 2105219089Spjd if (sa_hdl != hdl) { 2106219089Spjd prevhdl = sa_hdl; 2107219089Spjd prevdb = sa_db; 2108219089Spjd } 2109219089Spjd error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); 2110219089Spjd if (error != 0) { 2111219089Spjd sa_hdl = prevhdl; 2112219089Spjd sa_db = prevdb; 2113219089Spjd break; 2114219089Spjd } 2115168404Spjd } 2116168404Spjd 2117219089Spjd if (sa_hdl != NULL && sa_hdl != hdl) { 2118219089Spjd ASSERT(sa_db != NULL); 2119219089Spjd zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2120219089Spjd } 2121219089Spjd 2122168404Spjd if (error == 0) 2123168404Spjd (void) memmove(buf, path, buf + len - path); 2124219089Spjd 2125168404Spjd return (error); 2126168404Spjd} 2127219089Spjd 2128219089Spjdint 2129219089Spjdzfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) 2130219089Spjd{ 2131219089Spjd sa_attr_type_t *sa_table; 2132219089Spjd sa_handle_t *hdl; 2133219089Spjd dmu_buf_t *db; 2134219089Spjd int error; 2135219089Spjd 2136219089Spjd error = zfs_sa_setup(osp, &sa_table); 2137219089Spjd if (error != 0) 2138219089Spjd return (error); 2139219089Spjd 2140219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2141219089Spjd if (error != 0) 2142219089Spjd return (error); 2143219089Spjd 2144219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2145219089Spjd 2146219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2147219089Spjd return (error); 2148219089Spjd} 2149219089Spjd 2150219089Spjdint 2151219089Spjdzfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, 2152219089Spjd char *buf, int len) 2153219089Spjd{ 2154219089Spjd char *path = buf + len - 1; 2155219089Spjd sa_attr_type_t *sa_table; 2156219089Spjd sa_handle_t *hdl; 2157219089Spjd dmu_buf_t *db; 2158219089Spjd int error; 2159219089Spjd 2160219089Spjd *path = '\0'; 2161219089Spjd 2162219089Spjd error = zfs_sa_setup(osp, &sa_table); 2163219089Spjd if (error != 0) 2164219089Spjd return (error); 2165219089Spjd 2166219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2167219089Spjd if (error != 0) 2168219089Spjd return (error); 2169219089Spjd 2170219089Spjd error = zfs_obj_to_stats_impl(hdl, sa_table, sb); 2171219089Spjd if (error != 0) { 2172219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2173219089Spjd return (error); 2174219089Spjd } 2175219089Spjd 2176219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2177219089Spjd 2178219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2179219089Spjd return (error); 2180219089Spjd} 2181