zfs_znode.c revision 224251
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; 703224251Sdelphij#ifdef sun 704224231Sdelphij case VBLK: 705224231Sdelphij case VCHR: 706224231Sdelphij { 707224231Sdelphij uint64_t rdev; 708224231Sdelphij VERIFY(sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zfsvfs), 709224231Sdelphij &rdev, sizeof (rdev)) == 0); 710224231Sdelphij 711224251Sdelphij vp->v_rdev = zfs_cmpldev(rdev); 712224231Sdelphij } 713224231Sdelphij break; 714224251Sdelphij#endif /* sun */ 715168404Spjd case VFIFO: 716168404Spjd vp->v_op = &zfs_fifoops; 717168404Spjd break; 718219089Spjd case VREG: 719219089Spjd if (parent == zfsvfs->z_shares_dir) { 720219089Spjd ASSERT(zp->z_uid == 0 && zp->z_gid == 0); 721209962Smm vp->v_op = &zfs_shareops; 722209962Smm } 723209962Smm break; 724168404Spjd } 725210172Sjhb if (vp->v_type != VFIFO) 726189696Sjhb VN_LOCK_ASHARE(vp); 727168404Spjd 728185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 729185029Spjd list_insert_tail(&zfsvfs->z_all_znodes, zp); 730185029Spjd membar_producer(); 731168404Spjd /* 732185029Spjd * Everything else must be valid before assigning z_zfsvfs makes the 733185029Spjd * znode eligible for zfs_znode_move(). 734168404Spjd */ 735185029Spjd zp->z_zfsvfs = zfsvfs; 736185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 737168404Spjd 738168404Spjd VFS_HOLD(zfsvfs->z_vfs); 739185029Spjd return (zp); 740168404Spjd} 741168404Spjd 742219089Spjdstatic uint64_t empty_xattr; 743219089Spjdstatic uint64_t pad[4]; 744219089Spjdstatic zfs_acl_phys_t acl_phys; 745168404Spjd/* 746168404Spjd * Create a new DMU object to hold a zfs znode. 747168404Spjd * 748168404Spjd * IN: dzp - parent directory for new znode 749168404Spjd * vap - file attributes for new znode 750168404Spjd * tx - dmu transaction id for zap operations 751168404Spjd * cr - credentials of caller 752168404Spjd * flag - flags: 753168404Spjd * IS_ROOT_NODE - new object will be root 754168404Spjd * IS_XATTR - new object is an attribute 755185029Spjd * bonuslen - length of bonus buffer 756185029Spjd * setaclp - File/Dir initial ACL 757185029Spjd * fuidp - Tracks fuid allocation. 758168404Spjd * 759185029Spjd * OUT: zpp - allocated znode 760168404Spjd * 761168404Spjd */ 762168404Spjdvoid 763185029Spjdzfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, 764219089Spjd uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) 765168404Spjd{ 766219089Spjd uint64_t crtime[2], atime[2], mtime[2], ctime[2]; 767219089Spjd uint64_t mode, size, links, parent, pflags; 768219089Spjd uint64_t dzp_pflags = 0; 769219089Spjd uint64_t rdev = 0; 770219089Spjd zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 771185029Spjd dmu_buf_t *db; 772168404Spjd timestruc_t now; 773185029Spjd uint64_t gen, obj; 774168404Spjd int err; 775219089Spjd int bonuslen; 776219089Spjd sa_handle_t *sa_hdl; 777219089Spjd dmu_object_type_t obj_type; 778219089Spjd sa_bulk_attr_t sa_attrs[ZPL_END]; 779219089Spjd int cnt = 0; 780219089Spjd zfs_acl_locator_cb_t locate = { 0 }; 781168404Spjd 782168404Spjd ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE)); 783168404Spjd 784209962Smm if (zfsvfs->z_replay) { 785185029Spjd obj = vap->va_nodeid; 786168404Spjd now = vap->va_ctime; /* see zfs_replay_create() */ 787168404Spjd gen = vap->va_nblocks; /* ditto */ 788168404Spjd } else { 789185029Spjd obj = 0; 790168404Spjd gethrestime(&now); 791168404Spjd gen = dmu_tx_get_txg(tx); 792168404Spjd } 793168404Spjd 794219089Spjd obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; 795219089Spjd bonuslen = (obj_type == DMU_OT_SA) ? 796219089Spjd DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; 797219089Spjd 798168404Spjd /* 799168404Spjd * Create a new DMU object. 800168404Spjd */ 801168404Spjd /* 802168404Spjd * There's currently no mechanism for pre-reading the blocks that will 803219089Spjd * be needed to allocate a new object, so we accept the small chance 804168404Spjd * that there will be an i/o error and we will fail one of the 805168404Spjd * assertions below. 806168404Spjd */ 807168404Spjd if (vap->va_type == VDIR) { 808209962Smm if (zfsvfs->z_replay) { 809185029Spjd err = zap_create_claim_norm(zfsvfs->z_os, obj, 810185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 811219089Spjd obj_type, bonuslen, tx); 812168404Spjd ASSERT3U(err, ==, 0); 813168404Spjd } else { 814185029Spjd obj = zap_create_norm(zfsvfs->z_os, 815185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 816219089Spjd obj_type, bonuslen, tx); 817168404Spjd } 818168404Spjd } else { 819209962Smm if (zfsvfs->z_replay) { 820185029Spjd err = dmu_object_claim(zfsvfs->z_os, obj, 821168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 822219089Spjd obj_type, bonuslen, tx); 823168404Spjd ASSERT3U(err, ==, 0); 824168404Spjd } else { 825185029Spjd obj = dmu_object_alloc(zfsvfs->z_os, 826168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 827219089Spjd obj_type, bonuslen, tx); 828168404Spjd } 829168404Spjd } 830207334Spjd 831207334Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 832219089Spjd VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); 833168404Spjd 834168404Spjd /* 835168404Spjd * If this is the root, fix up the half-initialized parent pointer 836168404Spjd * to reference the just-allocated physical data area. 837168404Spjd */ 838168404Spjd if (flag & IS_ROOT_NODE) { 839185029Spjd dzp->z_id = obj; 840219089Spjd } else { 841219089Spjd dzp_pflags = dzp->z_pflags; 842168404Spjd } 843168404Spjd 844168404Spjd /* 845168404Spjd * If parent is an xattr, so am I. 846168404Spjd */ 847219089Spjd if (dzp_pflags & ZFS_XATTR) { 848168404Spjd flag |= IS_XATTR; 849168404Spjd } 850168404Spjd 851185029Spjd if (zfsvfs->z_use_fuids) 852219089Spjd pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; 853219089Spjd else 854219089Spjd pflags = 0; 855185029Spjd 856168404Spjd if (vap->va_type == VDIR) { 857219089Spjd size = 2; /* contents ("." and "..") */ 858219089Spjd links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; 859219089Spjd } else { 860219089Spjd size = links = 0; 861168404Spjd } 862168404Spjd 863219089Spjd if (vap->va_type == VBLK || vap->va_type == VCHR) { 864219089Spjd rdev = zfs_expldev(vap->va_rdev); 865219089Spjd } 866219089Spjd 867219089Spjd parent = dzp->z_id; 868219089Spjd mode = acl_ids->z_mode; 869168404Spjd if (flag & IS_XATTR) 870219089Spjd pflags |= ZFS_XATTR; 871168404Spjd 872219089Spjd /* 873219089Spjd * No execs denied will be deterimed when zfs_mode_compute() is called. 874219089Spjd */ 875219089Spjd pflags |= acl_ids->z_aclp->z_hints & 876219089Spjd (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| 877219089Spjd ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); 878168404Spjd 879219089Spjd ZFS_TIME_ENCODE(&now, crtime); 880219089Spjd ZFS_TIME_ENCODE(&now, ctime); 881168404Spjd 882168404Spjd if (vap->va_mask & AT_ATIME) { 883219089Spjd ZFS_TIME_ENCODE(&vap->va_atime, atime); 884168404Spjd } else { 885219089Spjd ZFS_TIME_ENCODE(&now, atime); 886168404Spjd } 887168404Spjd 888168404Spjd if (vap->va_mask & AT_MTIME) { 889219089Spjd ZFS_TIME_ENCODE(&vap->va_mtime, mtime); 890168404Spjd } else { 891219089Spjd ZFS_TIME_ENCODE(&now, mtime); 892168404Spjd } 893168404Spjd 894219089Spjd /* Now add in all of the "SA" attributes */ 895219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, 896219089Spjd &sa_hdl)); 897219089Spjd 898219089Spjd /* 899219089Spjd * Setup the array of attributes to be replaced/set on the new file 900219089Spjd * 901219089Spjd * order for DMU_OT_ZNODE is critical since it needs to be constructed 902219089Spjd * in the old znode_phys_t format. Don't change this ordering 903219089Spjd */ 904219089Spjd 905219089Spjd if (obj_type == DMU_OT_ZNODE) { 906219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 907219089Spjd NULL, &atime, 16); 908219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 909219089Spjd NULL, &mtime, 16); 910219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 911219089Spjd NULL, &ctime, 16); 912219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 913219089Spjd NULL, &crtime, 16); 914219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 915219089Spjd NULL, &gen, 8); 916219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 917219089Spjd NULL, &mode, 8); 918219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 919219089Spjd NULL, &size, 8); 920219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 921219089Spjd NULL, &parent, 8); 922219089Spjd } else { 923219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 924219089Spjd NULL, &mode, 8); 925219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 926219089Spjd NULL, &size, 8); 927219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 928219089Spjd NULL, &gen, 8); 929219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 930219089Spjd &acl_ids->z_fuid, 8); 931219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 932219089Spjd &acl_ids->z_fgid, 8); 933219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 934219089Spjd NULL, &parent, 8); 935219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 936219089Spjd NULL, &pflags, 8); 937219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 938219089Spjd NULL, &atime, 16); 939219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 940219089Spjd NULL, &mtime, 16); 941219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 942219089Spjd NULL, &ctime, 16); 943219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 944219089Spjd NULL, &crtime, 16); 945219089Spjd } 946219089Spjd 947219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); 948219089Spjd 949219089Spjd if (obj_type == DMU_OT_ZNODE) { 950219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, 951219089Spjd &empty_xattr, 8); 952219089Spjd } 953219089Spjd if (obj_type == DMU_OT_ZNODE || 954219089Spjd (vap->va_type == VBLK || vap->va_type == VCHR)) { 955219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), 956219089Spjd NULL, &rdev, 8); 957219089Spjd 958219089Spjd } 959219089Spjd if (obj_type == DMU_OT_ZNODE) { 960219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 961219089Spjd NULL, &pflags, 8); 962219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 963219089Spjd &acl_ids->z_fuid, 8); 964219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 965219089Spjd &acl_ids->z_fgid, 8); 966219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, 967219089Spjd sizeof (uint64_t) * 4); 968219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, 969219089Spjd &acl_phys, sizeof (zfs_acl_phys_t)); 970219089Spjd } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { 971219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, 972219089Spjd &acl_ids->z_aclp->z_acl_count, 8); 973219089Spjd locate.cb_aclp = acl_ids->z_aclp; 974219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), 975219089Spjd zfs_acl_data_locator, &locate, 976219089Spjd acl_ids->z_aclp->z_acl_bytes); 977219089Spjd mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, 978219089Spjd acl_ids->z_fuid, acl_ids->z_fgid); 979219089Spjd } 980219089Spjd 981219089Spjd VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); 982219089Spjd 983185029Spjd if (!(flag & IS_ROOT_NODE)) { 984219089Spjd *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); 985219089Spjd ASSERT(*zpp != NULL); 986185029Spjd } else { 987185029Spjd /* 988185029Spjd * If we are creating the root node, the "parent" we 989185029Spjd * passed in is the znode for the root. 990185029Spjd */ 991185029Spjd *zpp = dzp; 992219089Spjd 993219089Spjd (*zpp)->z_sa_hdl = sa_hdl; 994185029Spjd } 995219089Spjd 996219089Spjd (*zpp)->z_pflags = pflags; 997219089Spjd (*zpp)->z_mode = mode; 998219089Spjd 999209962Smm if (vap->va_mask & AT_XVATTR) 1000219089Spjd zfs_xvattr_set(*zpp, (xvattr_t *)vap, tx); 1001219089Spjd 1002219089Spjd if (obj_type == DMU_OT_ZNODE || 1003219089Spjd acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { 1004219089Spjd err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); 1005219089Spjd ASSERT3P(err, ==, 0); 1006219089Spjd } 1007185029Spjd if (!(flag & IS_ROOT_NODE)) { 1008185029Spjd vnode_t *vp; 1009168404Spjd 1010185029Spjd vp = ZTOV(*zpp); 1011185029Spjd vp->v_vflag |= VV_FORCEINSMQ; 1012185029Spjd err = insmntque(vp, zfsvfs->z_vfs); 1013185029Spjd vp->v_vflag &= ~VV_FORCEINSMQ; 1014185029Spjd KASSERT(err == 0, ("insmntque() failed: error %d", err)); 1015185029Spjd } 1016219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1017185029Spjd} 1018168404Spjd 1019219089Spjd/* 1020219089Spjd * zfs_xvattr_set only updates the in-core attributes 1021219089Spjd * it is assumed the caller will be doing an sa_bulk_update 1022219089Spjd * to push the changes out 1023219089Spjd */ 1024185029Spjdvoid 1025219089Spjdzfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) 1026185029Spjd{ 1027185029Spjd xoptattr_t *xoap; 1028168404Spjd 1029185029Spjd xoap = xva_getxoptattr(xvap); 1030185029Spjd ASSERT(xoap); 1031168404Spjd 1032185029Spjd if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { 1033219089Spjd uint64_t times[2]; 1034219089Spjd ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); 1035219089Spjd (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), 1036219089Spjd ×, sizeof (times), tx); 1037185029Spjd XVA_SET_RTN(xvap, XAT_CREATETIME); 1038168404Spjd } 1039185029Spjd if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { 1040219089Spjd ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, 1041219089Spjd zp->z_pflags, tx); 1042185029Spjd XVA_SET_RTN(xvap, XAT_READONLY); 1043185029Spjd } 1044185029Spjd if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { 1045219089Spjd ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, 1046219089Spjd zp->z_pflags, tx); 1047185029Spjd XVA_SET_RTN(xvap, XAT_HIDDEN); 1048185029Spjd } 1049185029Spjd if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { 1050219089Spjd ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, 1051219089Spjd zp->z_pflags, tx); 1052185029Spjd XVA_SET_RTN(xvap, XAT_SYSTEM); 1053185029Spjd } 1054185029Spjd if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { 1055219089Spjd ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, 1056219089Spjd zp->z_pflags, tx); 1057185029Spjd XVA_SET_RTN(xvap, XAT_ARCHIVE); 1058185029Spjd } 1059185029Spjd if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { 1060219089Spjd ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, 1061219089Spjd zp->z_pflags, tx); 1062185029Spjd XVA_SET_RTN(xvap, XAT_IMMUTABLE); 1063185029Spjd } 1064185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { 1065219089Spjd ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, 1066219089Spjd zp->z_pflags, tx); 1067185029Spjd XVA_SET_RTN(xvap, XAT_NOUNLINK); 1068185029Spjd } 1069185029Spjd if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { 1070219089Spjd ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, 1071219089Spjd zp->z_pflags, tx); 1072185029Spjd XVA_SET_RTN(xvap, XAT_APPENDONLY); 1073185029Spjd } 1074185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { 1075219089Spjd ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, 1076219089Spjd zp->z_pflags, tx); 1077185029Spjd XVA_SET_RTN(xvap, XAT_NODUMP); 1078185029Spjd } 1079185029Spjd if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { 1080219089Spjd ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, 1081219089Spjd zp->z_pflags, tx); 1082185029Spjd XVA_SET_RTN(xvap, XAT_OPAQUE); 1083185029Spjd } 1084185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { 1085185029Spjd ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, 1086219089Spjd xoap->xoa_av_quarantined, zp->z_pflags, tx); 1087185029Spjd XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); 1088185029Spjd } 1089185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { 1090219089Spjd ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, 1091219089Spjd zp->z_pflags, tx); 1092185029Spjd XVA_SET_RTN(xvap, XAT_AV_MODIFIED); 1093185029Spjd } 1094185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { 1095219089Spjd zfs_sa_set_scanstamp(zp, xvap, tx); 1096185029Spjd XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); 1097185029Spjd } 1098219089Spjd if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { 1099219089Spjd ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, 1100219089Spjd zp->z_pflags, tx); 1101219089Spjd XVA_SET_RTN(xvap, XAT_REPARSE); 1102219089Spjd } 1103219089Spjd if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { 1104219089Spjd ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, 1105219089Spjd zp->z_pflags, tx); 1106219089Spjd XVA_SET_RTN(xvap, XAT_OFFLINE); 1107219089Spjd } 1108219089Spjd if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { 1109219089Spjd ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, 1110219089Spjd zp->z_pflags, tx); 1111219089Spjd XVA_SET_RTN(xvap, XAT_SPARSE); 1112219089Spjd } 1113168404Spjd} 1114168404Spjd 1115168404Spjdint 1116168404Spjdzfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) 1117168404Spjd{ 1118168404Spjd dmu_object_info_t doi; 1119168404Spjd dmu_buf_t *db; 1120168404Spjd znode_t *zp; 1121219089Spjd int err; 1122219089Spjd sa_handle_t *hdl; 1123219089Spjd int first = 1; 1124168404Spjd 1125168404Spjd *zpp = NULL; 1126219089Spjd 1127185029Spjdagain: 1128168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1129168404Spjd 1130219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1131168404Spjd if (err) { 1132168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1133168404Spjd return (err); 1134168404Spjd } 1135168404Spjd 1136168404Spjd dmu_object_info_from_db(db, &doi); 1137219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1138219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1139219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1140219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1141219089Spjd sa_buf_rele(db, NULL); 1142168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1143168404Spjd return (EINVAL); 1144168404Spjd } 1145168404Spjd 1146219089Spjd hdl = dmu_buf_get_user(db); 1147219089Spjd if (hdl != NULL) { 1148219089Spjd zp = sa_get_userdata(hdl); 1149168404Spjd 1150219089Spjd 1151185029Spjd /* 1152219089Spjd * Since "SA" does immediate eviction we 1153219089Spjd * should never find a sa handle that doesn't 1154219089Spjd * know about the znode. 1155185029Spjd */ 1156219089Spjd 1157219089Spjd ASSERT3P(zp, !=, NULL); 1158219089Spjd 1159219089Spjd mutex_enter(&zp->z_lock); 1160168404Spjd ASSERT3U(zp->z_id, ==, obj_num); 1161168404Spjd if (zp->z_unlinked) { 1162185029Spjd err = ENOENT; 1163168404Spjd } else { 1164219089Spjd vnode_t *vp; 1165197458Spjd int dying = 0; 1166197458Spjd 1167197458Spjd vp = ZTOV(zp); 1168197458Spjd if (vp == NULL) 1169197458Spjd dying = 1; 1170197458Spjd else { 1171197458Spjd VN_HOLD(vp); 1172197131Spjd if ((vp->v_iflag & VI_DOOMED) != 0) { 1173197458Spjd dying = 1; 1174197458Spjd /* 1175197458Spjd * Don't VN_RELE() vnode here, because 1176197458Spjd * it can call vn_lock() which creates 1177197458Spjd * LOR between vnode lock and znode 1178197458Spjd * lock. We will VN_RELE() the vnode 1179197458Spjd * after droping znode lock. 1180197458Spjd */ 1181197458Spjd } 1182197131Spjd } 1183197458Spjd if (dying) { 1184185029Spjd if (first) { 1185185029Spjd ZFS_LOG(1, "dying znode detected (zp=%p)", zp); 1186185029Spjd first = 0; 1187185029Spjd } 1188185029Spjd /* 1189185029Spjd * znode is dying so we can't reuse it, we must 1190185029Spjd * wait until destruction is completed. 1191185029Spjd */ 1192219089Spjd sa_buf_rele(db, NULL); 1193185029Spjd mutex_exit(&zp->z_lock); 1194185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1195197458Spjd if (vp != NULL) 1196197458Spjd VN_RELE(vp); 1197185029Spjd tsleep(zp, 0, "zcollide", 1); 1198185029Spjd goto again; 1199185029Spjd } 1200185029Spjd *zpp = zp; 1201185029Spjd err = 0; 1202168404Spjd } 1203219089Spjd sa_buf_rele(db, NULL); 1204168404Spjd mutex_exit(&zp->z_lock); 1205168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1206185029Spjd return (err); 1207168404Spjd } 1208168404Spjd 1209168404Spjd /* 1210168404Spjd * Not found create new znode/vnode 1211207334Spjd * but only if file exists. 1212207334Spjd * 1213207334Spjd * There is a small window where zfs_vget() could 1214207334Spjd * find this object while a file create is still in 1215219089Spjd * progress. This is checked for in zfs_znode_alloc() 1216219089Spjd * 1217219089Spjd * if zfs_znode_alloc() fails it will drop the hold on the 1218219089Spjd * bonus buffer. 1219168404Spjd */ 1220219089Spjd zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, 1221219089Spjd doi.doi_bonus_type, NULL); 1222219089Spjd if (zp == NULL) { 1223219089Spjd err = ENOENT; 1224219089Spjd } else { 1225219089Spjd *zpp = zp; 1226219089Spjd } 1227219089Spjd if (err == 0) { 1228219089Spjd vnode_t *vp = ZTOV(zp); 1229185029Spjd 1230207334Spjd err = insmntque(vp, zfsvfs->z_vfs); 1231219089Spjd if (err == 0) 1232219089Spjd VOP_UNLOCK(vp, 0); 1233219089Spjd else { 1234219089Spjd zp->z_vnode = NULL; 1235219089Spjd zfs_znode_dmu_fini(zp); 1236219089Spjd zfs_znode_free(zp); 1237219089Spjd *zpp = NULL; 1238219089Spjd } 1239207334Spjd } 1240168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1241207334Spjd return (err); 1242168404Spjd} 1243168404Spjd 1244185029Spjdint 1245185029Spjdzfs_rezget(znode_t *zp) 1246185029Spjd{ 1247185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1248185029Spjd dmu_object_info_t doi; 1249185029Spjd dmu_buf_t *db; 1250185029Spjd uint64_t obj_num = zp->z_id; 1251219089Spjd uint64_t mode, size; 1252219089Spjd sa_bulk_attr_t bulk[8]; 1253185029Spjd int err; 1254219089Spjd int count = 0; 1255219089Spjd uint64_t gen; 1256185029Spjd 1257185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1258185029Spjd 1259219089Spjd mutex_enter(&zp->z_acl_lock); 1260219089Spjd if (zp->z_acl_cached) { 1261219089Spjd zfs_acl_free(zp->z_acl_cached); 1262219089Spjd zp->z_acl_cached = NULL; 1263219089Spjd } 1264219089Spjd 1265219089Spjd mutex_exit(&zp->z_acl_lock); 1266219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1267219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1268185029Spjd if (err) { 1269185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1270185029Spjd return (err); 1271185029Spjd } 1272185029Spjd 1273185029Spjd dmu_object_info_from_db(db, &doi); 1274219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1275219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1276219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1277219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1278219089Spjd sa_buf_rele(db, NULL); 1279185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1280185029Spjd return (EINVAL); 1281185029Spjd } 1282185029Spjd 1283219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); 1284219089Spjd size = zp->z_size; 1285219089Spjd 1286219089Spjd /* reload cached values */ 1287219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, 1288219089Spjd &gen, sizeof (gen)); 1289219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 1290219089Spjd &zp->z_size, sizeof (zp->z_size)); 1291219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 1292219089Spjd &zp->z_links, sizeof (zp->z_links)); 1293219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 1294219089Spjd &zp->z_pflags, sizeof (zp->z_pflags)); 1295219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 1296219089Spjd &zp->z_atime, sizeof (zp->z_atime)); 1297219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 1298219089Spjd &zp->z_uid, sizeof (zp->z_uid)); 1299219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 1300219089Spjd &zp->z_gid, sizeof (zp->z_gid)); 1301219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, 1302219089Spjd &mode, sizeof (mode)); 1303219089Spjd 1304219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { 1305219089Spjd zfs_znode_dmu_fini(zp); 1306185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1307185029Spjd return (EIO); 1308185029Spjd } 1309185029Spjd 1310219089Spjd zp->z_mode = mode; 1311219089Spjd 1312219089Spjd if (gen != zp->z_gen) { 1313219089Spjd zfs_znode_dmu_fini(zp); 1314219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1315219089Spjd return (EIO); 1316211932Smm } 1317211932Smm 1318219089Spjd /* 1319219089Spjd * XXXPJD: Not sure how is that possible, but under heavy 1320219089Spjd * zfs recv -F load it happens that z_gen is the same, but 1321219089Spjd * vnode type is different than znode type. This would mean 1322219089Spjd * that for example regular file was replaced with directory 1323219089Spjd * which has the same object number. 1324219089Spjd */ 1325219089Spjd if (ZTOV(zp) != NULL && 1326219089Spjd ZTOV(zp)->v_type != IFTOVT((mode_t)zp->z_mode)) { 1327219089Spjd zfs_znode_dmu_fini(zp); 1328219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1329219089Spjd return (EIO); 1330219089Spjd } 1331219089Spjd 1332219089Spjd zp->z_unlinked = (zp->z_links == 0); 1333185029Spjd zp->z_blksz = doi.doi_data_block_size; 1334219089Spjd if (zp->z_size != size && ZTOV(zp) != NULL) 1335219089Spjd vnode_pager_setsize(ZTOV(zp), zp->z_size); 1336185029Spjd 1337185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1338185029Spjd 1339185029Spjd return (0); 1340185029Spjd} 1341185029Spjd 1342168404Spjdvoid 1343168404Spjdzfs_znode_delete(znode_t *zp, dmu_tx_t *tx) 1344168404Spjd{ 1345168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1346185029Spjd objset_t *os = zfsvfs->z_os; 1347185029Spjd uint64_t obj = zp->z_id; 1348219089Spjd uint64_t acl_obj = zfs_external_acl(zp); 1349168404Spjd 1350185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 1351219089Spjd if (acl_obj) { 1352219089Spjd VERIFY(!zp->z_is_sa); 1353185029Spjd VERIFY(0 == dmu_object_free(os, acl_obj, tx)); 1354219089Spjd } 1355185029Spjd VERIFY(0 == dmu_object_free(os, obj, tx)); 1356185029Spjd zfs_znode_dmu_fini(zp); 1357185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1358185029Spjd zfs_znode_free(zp); 1359168404Spjd} 1360168404Spjd 1361168404Spjdvoid 1362168404Spjdzfs_zinactive(znode_t *zp) 1363168404Spjd{ 1364168404Spjd vnode_t *vp = ZTOV(zp); 1365168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1366168404Spjd uint64_t z_id = zp->z_id; 1367201406Sdelphij int vfslocked; 1368168404Spjd 1369219089Spjd ASSERT(zp->z_sa_hdl); 1370168404Spjd 1371168404Spjd /* 1372168404Spjd * Don't allow a zfs_zget() while were trying to release this znode 1373168404Spjd */ 1374168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id); 1375168404Spjd 1376168404Spjd mutex_enter(&zp->z_lock); 1377168404Spjd VI_LOCK(vp); 1378168404Spjd if (vp->v_count > 0) { 1379168404Spjd /* 1380168404Spjd * If the hold count is greater than zero, somebody has 1381168404Spjd * obtained a new reference on this znode while we were 1382168404Spjd * processing it here, so we are done. 1383168404Spjd */ 1384168404Spjd VI_UNLOCK(vp); 1385168404Spjd mutex_exit(&zp->z_lock); 1386168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1387168404Spjd return; 1388168404Spjd } 1389168404Spjd VI_UNLOCK(vp); 1390168404Spjd 1391168404Spjd /* 1392168404Spjd * If this was the last reference to a file with no links, 1393168404Spjd * remove the file from the file system. 1394168404Spjd */ 1395168404Spjd if (zp->z_unlinked) { 1396168404Spjd mutex_exit(&zp->z_lock); 1397168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1398168404Spjd ASSERT(vp->v_count == 0); 1399168404Spjd vrecycle(vp, curthread); 1400201406Sdelphij vfslocked = VFS_LOCK_GIANT(zfsvfs->z_vfs); 1401168404Spjd zfs_rmnode(zp); 1402201406Sdelphij VFS_UNLOCK_GIANT(vfslocked); 1403168404Spjd return; 1404168404Spjd } 1405219089Spjd 1406168404Spjd mutex_exit(&zp->z_lock); 1407168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1408168404Spjd} 1409168404Spjd 1410168404Spjdvoid 1411168404Spjdzfs_znode_free(znode_t *zp) 1412168404Spjd{ 1413168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1414168404Spjd 1415185029Spjd ASSERT(ZTOV(zp) == NULL); 1416219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1417168404Spjd mutex_enter(&zfsvfs->z_znodes_lock); 1418185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 1419168404Spjd list_remove(&zfsvfs->z_all_znodes, zp); 1420168404Spjd mutex_exit(&zfsvfs->z_znodes_lock); 1421168404Spjd 1422211932Smm if (zp->z_acl_cached) { 1423211932Smm zfs_acl_free(zp->z_acl_cached); 1424211932Smm zp->z_acl_cached = NULL; 1425211932Smm } 1426211932Smm 1427168404Spjd kmem_cache_free(znode_cache, zp); 1428185029Spjd 1429185029Spjd VFS_RELE(zfsvfs->z_vfs); 1430168404Spjd} 1431168404Spjd 1432168404Spjdvoid 1433219089Spjdzfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], 1434219089Spjd uint64_t ctime[2], boolean_t have_tx) 1435168404Spjd{ 1436168404Spjd timestruc_t now; 1437168404Spjd 1438168404Spjd gethrestime(&now); 1439168404Spjd 1440219089Spjd if (have_tx) { /* will sa_bulk_update happen really soon? */ 1441168404Spjd zp->z_atime_dirty = 0; 1442168404Spjd zp->z_seq++; 1443168404Spjd } else { 1444168404Spjd zp->z_atime_dirty = 1; 1445168404Spjd } 1446168404Spjd 1447219089Spjd if (flag & AT_ATIME) { 1448219089Spjd ZFS_TIME_ENCODE(&now, zp->z_atime); 1449219089Spjd } 1450168404Spjd 1451185029Spjd if (flag & AT_MTIME) { 1452219089Spjd ZFS_TIME_ENCODE(&now, mtime); 1453219089Spjd if (zp->z_zfsvfs->z_use_fuids) { 1454219089Spjd zp->z_pflags |= (ZFS_ARCHIVE | 1455219089Spjd ZFS_AV_MODIFIED); 1456219089Spjd } 1457185029Spjd } 1458168404Spjd 1459185029Spjd if (flag & AT_CTIME) { 1460219089Spjd ZFS_TIME_ENCODE(&now, ctime); 1461185029Spjd if (zp->z_zfsvfs->z_use_fuids) 1462219089Spjd zp->z_pflags |= ZFS_ARCHIVE; 1463185029Spjd } 1464168404Spjd} 1465168404Spjd 1466168404Spjd/* 1467168404Spjd * Grow the block size for a file. 1468168404Spjd * 1469168404Spjd * IN: zp - znode of file to free data in. 1470168404Spjd * size - requested block size 1471168404Spjd * tx - open transaction. 1472168404Spjd * 1473168404Spjd * NOTE: this function assumes that the znode is write locked. 1474168404Spjd */ 1475168404Spjdvoid 1476168404Spjdzfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) 1477168404Spjd{ 1478168404Spjd int error; 1479168404Spjd u_longlong_t dummy; 1480168404Spjd 1481168404Spjd if (size <= zp->z_blksz) 1482168404Spjd return; 1483168404Spjd /* 1484168404Spjd * If the file size is already greater than the current blocksize, 1485168404Spjd * we will not grow. If there is more than one block in a file, 1486168404Spjd * the blocksize cannot change. 1487168404Spjd */ 1488219089Spjd if (zp->z_blksz && zp->z_size > zp->z_blksz) 1489168404Spjd return; 1490168404Spjd 1491168404Spjd error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id, 1492168404Spjd size, 0, tx); 1493219089Spjd 1494168404Spjd if (error == ENOTSUP) 1495168404Spjd return; 1496168404Spjd ASSERT3U(error, ==, 0); 1497168404Spjd 1498168404Spjd /* What blocksize did we actually get? */ 1499219089Spjd dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); 1500168404Spjd} 1501168404Spjd 1502219089Spjd#ifdef sun 1503168404Spjd/* 1504219089Spjd * This is a dummy interface used when pvn_vplist_dirty() should *not* 1505219089Spjd * be calling back into the fs for a putpage(). E.g.: when truncating 1506219089Spjd * a file, the pages being "thrown away* don't need to be written out. 1507219089Spjd */ 1508219089Spjd/* ARGSUSED */ 1509219089Spjdstatic int 1510219089Spjdzfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, 1511219089Spjd int flags, cred_t *cr) 1512219089Spjd{ 1513219089Spjd ASSERT(0); 1514219089Spjd return (0); 1515219089Spjd} 1516219089Spjd#endif /* sun */ 1517219089Spjd 1518219089Spjd/* 1519185029Spjd * Increase the file length 1520168404Spjd * 1521168404Spjd * IN: zp - znode of file to free data in. 1522185029Spjd * end - new end-of-file 1523168404Spjd * 1524168404Spjd * RETURN: 0 if success 1525168404Spjd * error code if failure 1526168404Spjd */ 1527185029Spjdstatic int 1528185029Spjdzfs_extend(znode_t *zp, uint64_t end) 1529168404Spjd{ 1530185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1531168404Spjd dmu_tx_t *tx; 1532168404Spjd rl_t *rl; 1533185029Spjd uint64_t newblksz; 1534168404Spjd int error; 1535168404Spjd 1536168404Spjd /* 1537185029Spjd * We will change zp_size, lock the whole file. 1538168404Spjd */ 1539185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1540168404Spjd 1541168404Spjd /* 1542168404Spjd * Nothing to do if file already at desired length. 1543168404Spjd */ 1544219089Spjd if (end <= zp->z_size) { 1545168404Spjd zfs_range_unlock(rl); 1546168404Spjd return (0); 1547168404Spjd } 1548185029Spjdtop: 1549168404Spjd tx = dmu_tx_create(zfsvfs->z_os); 1550219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1551219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1552185029Spjd if (end > zp->z_blksz && 1553168404Spjd (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { 1554168404Spjd /* 1555168404Spjd * We are growing the file past the current block size. 1556168404Spjd */ 1557168404Spjd if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) { 1558168404Spjd ASSERT(!ISP2(zp->z_blksz)); 1559185029Spjd newblksz = MIN(end, SPA_MAXBLOCKSIZE); 1560168404Spjd } else { 1561185029Spjd newblksz = MIN(end, zp->z_zfsvfs->z_max_blksz); 1562168404Spjd } 1563185029Spjd dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); 1564185029Spjd } else { 1565185029Spjd newblksz = 0; 1566168404Spjd } 1567168404Spjd 1568209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1569168404Spjd if (error) { 1570209962Smm if (error == ERESTART) { 1571168404Spjd dmu_tx_wait(tx); 1572185029Spjd dmu_tx_abort(tx); 1573185029Spjd goto top; 1574185029Spjd } 1575168404Spjd dmu_tx_abort(tx); 1576168404Spjd zfs_range_unlock(rl); 1577168404Spjd return (error); 1578168404Spjd } 1579168404Spjd 1580185029Spjd if (newblksz) 1581185029Spjd zfs_grow_blocksize(zp, newblksz, tx); 1582168404Spjd 1583219089Spjd zp->z_size = end; 1584168404Spjd 1585219089Spjd VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), 1586219089Spjd &zp->z_size, sizeof (zp->z_size), tx)); 1587219089Spjd 1588219089Spjd vnode_pager_setsize(ZTOV(zp), end); 1589219089Spjd 1590185029Spjd zfs_range_unlock(rl); 1591168404Spjd 1592185029Spjd dmu_tx_commit(tx); 1593185029Spjd 1594185029Spjd return (0); 1595185029Spjd} 1596185029Spjd 1597185029Spjd/* 1598185029Spjd * Free space in a file. 1599185029Spjd * 1600185029Spjd * IN: zp - znode of file to free data in. 1601185029Spjd * off - start of section to free. 1602185029Spjd * len - length of section to free. 1603185029Spjd * 1604185029Spjd * RETURN: 0 if success 1605185029Spjd * error code if failure 1606185029Spjd */ 1607185029Spjdstatic int 1608185029Spjdzfs_free_range(znode_t *zp, uint64_t off, uint64_t len) 1609185029Spjd{ 1610185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1611185029Spjd rl_t *rl; 1612185029Spjd int error; 1613185029Spjd 1614185029Spjd /* 1615185029Spjd * Lock the range being freed. 1616185029Spjd */ 1617185029Spjd rl = zfs_range_lock(zp, off, len, RL_WRITER); 1618185029Spjd 1619185029Spjd /* 1620185029Spjd * Nothing to do if file already at desired length. 1621185029Spjd */ 1622219089Spjd if (off >= zp->z_size) { 1623185029Spjd zfs_range_unlock(rl); 1624185029Spjd return (0); 1625168404Spjd } 1626168404Spjd 1627219089Spjd if (off + len > zp->z_size) 1628219089Spjd len = zp->z_size - off; 1629185029Spjd 1630185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); 1631185029Spjd 1632185029Spjd if (error == 0) { 1633185029Spjd /* 1634185029Spjd * In FreeBSD we cannot free block in the middle of a file, 1635219089Spjd * but only at the end of a file, so this code path should 1636219089Spjd * never happen. 1637185029Spjd */ 1638185029Spjd vnode_pager_setsize(ZTOV(zp), off); 1639168404Spjd } 1640168404Spjd 1641168404Spjd zfs_range_unlock(rl); 1642168404Spjd 1643185029Spjd return (error); 1644185029Spjd} 1645185029Spjd 1646185029Spjd/* 1647185029Spjd * Truncate a file 1648185029Spjd * 1649185029Spjd * IN: zp - znode of file to free data in. 1650185029Spjd * end - new end-of-file. 1651185029Spjd * 1652185029Spjd * RETURN: 0 if success 1653185029Spjd * error code if failure 1654185029Spjd */ 1655185029Spjdstatic int 1656185029Spjdzfs_trunc(znode_t *zp, uint64_t end) 1657185029Spjd{ 1658185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1659185029Spjd vnode_t *vp = ZTOV(zp); 1660185029Spjd dmu_tx_t *tx; 1661185029Spjd rl_t *rl; 1662185029Spjd int error; 1663219089Spjd sa_bulk_attr_t bulk[2]; 1664219089Spjd int count = 0; 1665185029Spjd 1666185029Spjd /* 1667185029Spjd * We will change zp_size, lock the whole file. 1668185029Spjd */ 1669185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1670185029Spjd 1671185029Spjd /* 1672185029Spjd * Nothing to do if file already at desired length. 1673185029Spjd */ 1674219089Spjd if (end >= zp->z_size) { 1675185029Spjd zfs_range_unlock(rl); 1676185029Spjd return (0); 1677185029Spjd } 1678185029Spjd 1679185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1); 1680185029Spjd if (error) { 1681185029Spjd zfs_range_unlock(rl); 1682185029Spjd return (error); 1683185029Spjd } 1684185029Spjdtop: 1685185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1686219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1687219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1688209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1689185029Spjd if (error) { 1690209962Smm if (error == ERESTART) { 1691185029Spjd dmu_tx_wait(tx); 1692185029Spjd dmu_tx_abort(tx); 1693185029Spjd goto top; 1694185029Spjd } 1695185029Spjd dmu_tx_abort(tx); 1696185029Spjd zfs_range_unlock(rl); 1697185029Spjd return (error); 1698185029Spjd } 1699185029Spjd 1700219089Spjd zp->z_size = end; 1701219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), 1702219089Spjd NULL, &zp->z_size, sizeof (zp->z_size)); 1703185029Spjd 1704219089Spjd if (end == 0) { 1705219089Spjd zp->z_pflags &= ~ZFS_SPARSE; 1706219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1707219089Spjd NULL, &zp->z_pflags, 8); 1708219089Spjd } 1709219089Spjd VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); 1710219089Spjd 1711168404Spjd dmu_tx_commit(tx); 1712168404Spjd 1713168404Spjd /* 1714168404Spjd * Clear any mapped pages in the truncated region. This has to 1715168404Spjd * happen outside of the transaction to avoid the possibility of 1716168404Spjd * a deadlock with someone trying to push a page that we are 1717168404Spjd * about to invalidate. 1718168404Spjd */ 1719185029Spjd vnode_pager_setsize(vp, end); 1720168404Spjd 1721209962Smm zfs_range_unlock(rl); 1722209962Smm 1723168404Spjd return (0); 1724168404Spjd} 1725168404Spjd 1726185029Spjd/* 1727185029Spjd * Free space in a file 1728185029Spjd * 1729185029Spjd * IN: zp - znode of file to free data in. 1730185029Spjd * off - start of range 1731185029Spjd * len - end of range (0 => EOF) 1732185029Spjd * flag - current file open mode flags. 1733185029Spjd * log - TRUE if this action should be logged 1734185029Spjd * 1735185029Spjd * RETURN: 0 if success 1736185029Spjd * error code if failure 1737185029Spjd */ 1738185029Spjdint 1739185029Spjdzfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) 1740185029Spjd{ 1741185029Spjd vnode_t *vp = ZTOV(zp); 1742185029Spjd dmu_tx_t *tx; 1743185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1744185029Spjd zilog_t *zilog = zfsvfs->z_log; 1745219089Spjd uint64_t mode; 1746219089Spjd uint64_t mtime[2], ctime[2]; 1747219089Spjd sa_bulk_attr_t bulk[3]; 1748219089Spjd int count = 0; 1749185029Spjd int error; 1750185029Spjd 1751219089Spjd if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, 1752219089Spjd sizeof (mode))) != 0) 1753219089Spjd return (error); 1754219089Spjd 1755219089Spjd if (off > zp->z_size) { 1756185029Spjd error = zfs_extend(zp, off+len); 1757185029Spjd if (error == 0 && log) 1758185029Spjd goto log; 1759185029Spjd else 1760185029Spjd return (error); 1761185029Spjd } 1762185029Spjd 1763219089Spjd /* 1764219089Spjd * Check for any locks in the region to be freed. 1765219089Spjd */ 1766219089Spjd 1767219089Spjd if (MANDLOCK(vp, (mode_t)mode)) { 1768219089Spjd uint64_t length = (len ? len : zp->z_size - off); 1769219089Spjd if (error = chklock(vp, FWRITE, off, length, flag, NULL)) 1770219089Spjd return (error); 1771219089Spjd } 1772219089Spjd 1773185029Spjd if (len == 0) { 1774185029Spjd error = zfs_trunc(zp, off); 1775185029Spjd } else { 1776185029Spjd if ((error = zfs_free_range(zp, off, len)) == 0 && 1777219089Spjd off + len > zp->z_size) 1778185029Spjd error = zfs_extend(zp, off+len); 1779185029Spjd } 1780185029Spjd if (error || !log) 1781185029Spjd return (error); 1782185029Spjdlog: 1783185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1784219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1785219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1786209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1787185029Spjd if (error) { 1788209962Smm if (error == ERESTART) { 1789185029Spjd dmu_tx_wait(tx); 1790185029Spjd dmu_tx_abort(tx); 1791185029Spjd goto log; 1792185029Spjd } 1793185029Spjd dmu_tx_abort(tx); 1794185029Spjd return (error); 1795185029Spjd } 1796185029Spjd 1797219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); 1798219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); 1799219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1800219089Spjd NULL, &zp->z_pflags, 8); 1801219089Spjd zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); 1802219089Spjd error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); 1803219089Spjd ASSERT(error == 0); 1804219089Spjd 1805185029Spjd zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); 1806185029Spjd 1807185029Spjd dmu_tx_commit(tx); 1808185029Spjd return (0); 1809185029Spjd} 1810185029Spjd 1811168404Spjdvoid 1812185029Spjdzfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) 1813168404Spjd{ 1814168404Spjd zfsvfs_t zfsvfs; 1815219089Spjd uint64_t moid, obj, sa_obj, version; 1816185029Spjd uint64_t sense = ZFS_CASE_SENSITIVE; 1817185029Spjd uint64_t norm = 0; 1818185029Spjd nvpair_t *elem; 1819168404Spjd int error; 1820207334Spjd int i; 1821168404Spjd znode_t *rootzp = NULL; 1822199156Spjd vnode_t vnode; 1823168404Spjd vattr_t vattr; 1824185029Spjd znode_t *zp; 1825209962Smm zfs_acl_ids_t acl_ids; 1826168404Spjd 1827168404Spjd /* 1828168404Spjd * First attempt to create master node. 1829168404Spjd */ 1830168404Spjd /* 1831168404Spjd * In an empty objset, there are no blocks to read and thus 1832168404Spjd * there can be no i/o errors (which we assert below). 1833168404Spjd */ 1834168404Spjd moid = MASTER_NODE_OBJ; 1835168404Spjd error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, 1836168404Spjd DMU_OT_NONE, 0, tx); 1837168404Spjd ASSERT(error == 0); 1838168404Spjd 1839168404Spjd /* 1840168404Spjd * Set starting attributes. 1841168404Spjd */ 1842219089Spjd version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); 1843185029Spjd elem = NULL; 1844185029Spjd while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { 1845185029Spjd /* For the moment we expect all zpl props to be uint64_ts */ 1846185029Spjd uint64_t val; 1847185029Spjd char *name; 1848168404Spjd 1849185029Spjd ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); 1850185029Spjd VERIFY(nvpair_value_uint64(elem, &val) == 0); 1851185029Spjd name = nvpair_name(elem); 1852185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { 1853209962Smm if (val < version) 1854209962Smm version = val; 1855185029Spjd } else { 1856185029Spjd error = zap_update(os, moid, name, 8, 1, &val, tx); 1857185029Spjd } 1858185029Spjd ASSERT(error == 0); 1859185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) 1860185029Spjd norm = val; 1861185029Spjd else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) 1862185029Spjd sense = val; 1863185029Spjd } 1864185029Spjd ASSERT(version != 0); 1865209962Smm error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); 1866168404Spjd 1867168404Spjd /* 1868219089Spjd * Create zap object used for SA attribute registration 1869219089Spjd */ 1870219089Spjd 1871219089Spjd if (version >= ZPL_VERSION_SA) { 1872219089Spjd sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, 1873219089Spjd DMU_OT_NONE, 0, tx); 1874219089Spjd error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); 1875219089Spjd ASSERT(error == 0); 1876219089Spjd } else { 1877219089Spjd sa_obj = 0; 1878219089Spjd } 1879219089Spjd /* 1880168404Spjd * Create a delete queue. 1881168404Spjd */ 1882209962Smm obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); 1883168404Spjd 1884209962Smm error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); 1885168404Spjd ASSERT(error == 0); 1886168404Spjd 1887168404Spjd /* 1888168404Spjd * Create root znode. Create minimal znode/vnode/zfsvfs 1889168404Spjd * to allow zfs_mknode to work. 1890168404Spjd */ 1891185029Spjd VATTR_NULL(&vattr); 1892168404Spjd vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 1893168404Spjd vattr.va_type = VDIR; 1894168404Spjd vattr.va_mode = S_IFDIR|0755; 1895185029Spjd vattr.va_uid = crgetuid(cr); 1896185029Spjd vattr.va_gid = crgetgid(cr); 1897168404Spjd 1898219089Spjd bzero(&zfsvfs, sizeof (zfsvfs_t)); 1899219089Spjd 1900168404Spjd rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); 1901199156Spjd zfs_znode_cache_constructor(rootzp, NULL, 0); 1902219089Spjd ASSERT(!POINTER_IS_VALID(rootzp->z_zfsvfs)); 1903219089Spjd rootzp->z_moved = 0; 1904168404Spjd rootzp->z_unlinked = 0; 1905168404Spjd rootzp->z_atime_dirty = 0; 1906219089Spjd rootzp->z_is_sa = USE_SA(version, os); 1907168404Spjd 1908199156Spjd vnode.v_type = VDIR; 1909199156Spjd vnode.v_data = rootzp; 1910199156Spjd rootzp->z_vnode = &vnode; 1911185029Spjd 1912168404Spjd zfsvfs.z_os = os; 1913168404Spjd zfsvfs.z_parent = &zfsvfs; 1914185029Spjd zfsvfs.z_version = version; 1915185029Spjd zfsvfs.z_use_fuids = USE_FUIDS(version, os); 1916219089Spjd zfsvfs.z_use_sa = USE_SA(version, os); 1917185029Spjd zfsvfs.z_norm = norm; 1918219089Spjd 1919219089Spjd error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, 1920219089Spjd &zfsvfs.z_attr_table); 1921219089Spjd 1922219089Spjd ASSERT(error == 0); 1923219089Spjd 1924185029Spjd /* 1925185029Spjd * Fold case on file systems that are always or sometimes case 1926185029Spjd * insensitive. 1927185029Spjd */ 1928185029Spjd if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) 1929185029Spjd zfsvfs.z_norm |= U8_TEXTPREP_TOUPPER; 1930168404Spjd 1931168404Spjd mutex_init(&zfsvfs.z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); 1932168404Spjd list_create(&zfsvfs.z_all_znodes, sizeof (znode_t), 1933168404Spjd offsetof(znode_t, z_link_node)); 1934168404Spjd 1935207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1936207334Spjd mutex_init(&zfsvfs.z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); 1937207334Spjd 1938185029Spjd rootzp->z_zfsvfs = &zfsvfs; 1939209962Smm VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, 1940209962Smm cr, NULL, &acl_ids)); 1941219089Spjd zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); 1942185029Spjd ASSERT3P(zp, ==, rootzp); 1943185029Spjd error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); 1944168404Spjd ASSERT(error == 0); 1945209962Smm zfs_acl_ids_free(&acl_ids); 1946185029Spjd POINTER_INVALIDATE(&rootzp->z_zfsvfs); 1947168404Spjd 1948219089Spjd sa_handle_destroy(rootzp->z_sa_hdl); 1949209962Smm rootzp->z_vnode = NULL; 1950209962Smm kmem_cache_free(znode_cache, rootzp); 1951209962Smm 1952209962Smm /* 1953209962Smm * Create shares directory 1954209962Smm */ 1955209962Smm 1956209962Smm error = zfs_create_share_dir(&zfsvfs, tx); 1957209962Smm 1958209962Smm ASSERT(error == 0); 1959209962Smm 1960207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1961207334Spjd mutex_destroy(&zfsvfs.z_hold_mtx[i]); 1962168404Spjd} 1963185029Spjd 1964168404Spjd#endif /* _KERNEL */ 1965219089Spjd 1966168404Spjdstatic int 1967219089Spjdzfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) 1968168404Spjd{ 1969219089Spjd uint64_t sa_obj = 0; 1970219089Spjd int error; 1971219089Spjd 1972219089Spjd error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); 1973219089Spjd if (error != 0 && error != ENOENT) 1974219089Spjd return (error); 1975219089Spjd 1976219089Spjd error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); 1977219089Spjd return (error); 1978219089Spjd} 1979219089Spjd 1980219089Spjdstatic int 1981219089Spjdzfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, 1982219089Spjd dmu_buf_t **db, void *tag) 1983219089Spjd{ 1984168404Spjd dmu_object_info_t doi; 1985168404Spjd int error; 1986168404Spjd 1987219089Spjd if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) 1988168404Spjd return (error); 1989168404Spjd 1990219089Spjd dmu_object_info_from_db(*db, &doi); 1991219089Spjd if ((doi.doi_bonus_type != DMU_OT_SA && 1992219089Spjd doi.doi_bonus_type != DMU_OT_ZNODE) || 1993219089Spjd doi.doi_bonus_type == DMU_OT_ZNODE && 1994168404Spjd doi.doi_bonus_size < sizeof (znode_phys_t)) { 1995219089Spjd sa_buf_rele(*db, tag); 1996219089Spjd return (ENOTSUP); 1997168404Spjd } 1998168404Spjd 1999219089Spjd error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); 2000219089Spjd if (error != 0) { 2001219089Spjd sa_buf_rele(*db, tag); 2002219089Spjd return (error); 2003219089Spjd } 2004168404Spjd 2005168404Spjd return (0); 2006168404Spjd} 2007168404Spjd 2008219089Spjdvoid 2009219089Spjdzfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) 2010168404Spjd{ 2011219089Spjd sa_handle_destroy(hdl); 2012219089Spjd sa_buf_rele(db, tag); 2013219089Spjd} 2014219089Spjd 2015219089Spjd/* 2016219089Spjd * Given an object number, return its parent object number and whether 2017219089Spjd * or not the object is an extended attribute directory. 2018219089Spjd */ 2019219089Spjdstatic int 2020219089Spjdzfs_obj_to_pobj(sa_handle_t *hdl, sa_attr_type_t *sa_table, uint64_t *pobjp, 2021219089Spjd int *is_xattrdir) 2022219089Spjd{ 2023219089Spjd uint64_t parent; 2024219089Spjd uint64_t pflags; 2025219089Spjd uint64_t mode; 2026219089Spjd sa_bulk_attr_t bulk[3]; 2027219089Spjd int count = 0; 2028219089Spjd int error; 2029219089Spjd 2030219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, 2031219089Spjd &parent, sizeof (parent)); 2032219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, 2033219089Spjd &pflags, sizeof (pflags)); 2034219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2035219089Spjd &mode, sizeof (mode)); 2036219089Spjd 2037219089Spjd if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) 2038219089Spjd return (error); 2039219089Spjd 2040219089Spjd *pobjp = parent; 2041219089Spjd *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); 2042219089Spjd 2043219089Spjd return (0); 2044219089Spjd} 2045219089Spjd 2046219089Spjd/* 2047219089Spjd * Given an object number, return some zpl level statistics 2048219089Spjd */ 2049219089Spjdstatic int 2050219089Spjdzfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, 2051219089Spjd zfs_stat_t *sb) 2052219089Spjd{ 2053219089Spjd sa_bulk_attr_t bulk[4]; 2054219089Spjd int count = 0; 2055219089Spjd 2056219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2057219089Spjd &sb->zs_mode, sizeof (sb->zs_mode)); 2058219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, 2059219089Spjd &sb->zs_gen, sizeof (sb->zs_gen)); 2060219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, 2061219089Spjd &sb->zs_links, sizeof (sb->zs_links)); 2062219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, 2063219089Spjd &sb->zs_ctime, sizeof (sb->zs_ctime)); 2064219089Spjd 2065219089Spjd return (sa_bulk_lookup(hdl, bulk, count)); 2066219089Spjd} 2067219089Spjd 2068219089Spjdstatic int 2069219089Spjdzfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, 2070219089Spjd sa_attr_type_t *sa_table, char *buf, int len) 2071219089Spjd{ 2072219089Spjd sa_handle_t *sa_hdl; 2073219089Spjd sa_handle_t *prevhdl = NULL; 2074219089Spjd dmu_buf_t *prevdb = NULL; 2075219089Spjd dmu_buf_t *sa_db = NULL; 2076168404Spjd char *path = buf + len - 1; 2077168404Spjd int error; 2078168404Spjd 2079168404Spjd *path = '\0'; 2080219089Spjd sa_hdl = hdl; 2081168404Spjd 2082168404Spjd for (;;) { 2083168404Spjd uint64_t pobj; 2084168404Spjd char component[MAXNAMELEN + 2]; 2085168404Spjd size_t complen; 2086168404Spjd int is_xattrdir; 2087168404Spjd 2088219089Spjd if (prevdb) 2089219089Spjd zfs_release_sa_handle(prevhdl, prevdb, FTAG); 2090219089Spjd 2091219089Spjd if ((error = zfs_obj_to_pobj(sa_hdl, sa_table, &pobj, 2092168404Spjd &is_xattrdir)) != 0) 2093168404Spjd break; 2094168404Spjd 2095168404Spjd if (pobj == obj) { 2096168404Spjd if (path[0] != '/') 2097168404Spjd *--path = '/'; 2098168404Spjd break; 2099168404Spjd } 2100168404Spjd 2101168404Spjd component[0] = '/'; 2102168404Spjd if (is_xattrdir) { 2103168404Spjd (void) sprintf(component + 1, "<xattrdir>"); 2104168404Spjd } else { 2105185029Spjd error = zap_value_search(osp, pobj, obj, 2106185029Spjd ZFS_DIRENT_OBJ(-1ULL), component + 1); 2107168404Spjd if (error != 0) 2108168404Spjd break; 2109168404Spjd } 2110168404Spjd 2111168404Spjd complen = strlen(component); 2112168404Spjd path -= complen; 2113168404Spjd ASSERT(path >= buf); 2114168404Spjd bcopy(component, path, complen); 2115168404Spjd obj = pobj; 2116219089Spjd 2117219089Spjd if (sa_hdl != hdl) { 2118219089Spjd prevhdl = sa_hdl; 2119219089Spjd prevdb = sa_db; 2120219089Spjd } 2121219089Spjd error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); 2122219089Spjd if (error != 0) { 2123219089Spjd sa_hdl = prevhdl; 2124219089Spjd sa_db = prevdb; 2125219089Spjd break; 2126219089Spjd } 2127168404Spjd } 2128168404Spjd 2129219089Spjd if (sa_hdl != NULL && sa_hdl != hdl) { 2130219089Spjd ASSERT(sa_db != NULL); 2131219089Spjd zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2132219089Spjd } 2133219089Spjd 2134168404Spjd if (error == 0) 2135168404Spjd (void) memmove(buf, path, buf + len - path); 2136219089Spjd 2137168404Spjd return (error); 2138168404Spjd} 2139219089Spjd 2140219089Spjdint 2141219089Spjdzfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) 2142219089Spjd{ 2143219089Spjd sa_attr_type_t *sa_table; 2144219089Spjd sa_handle_t *hdl; 2145219089Spjd dmu_buf_t *db; 2146219089Spjd int error; 2147219089Spjd 2148219089Spjd error = zfs_sa_setup(osp, &sa_table); 2149219089Spjd if (error != 0) 2150219089Spjd return (error); 2151219089Spjd 2152219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2153219089Spjd if (error != 0) 2154219089Spjd return (error); 2155219089Spjd 2156219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2157219089Spjd 2158219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2159219089Spjd return (error); 2160219089Spjd} 2161219089Spjd 2162219089Spjdint 2163219089Spjdzfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, 2164219089Spjd char *buf, int len) 2165219089Spjd{ 2166219089Spjd char *path = buf + len - 1; 2167219089Spjd sa_attr_type_t *sa_table; 2168219089Spjd sa_handle_t *hdl; 2169219089Spjd dmu_buf_t *db; 2170219089Spjd int error; 2171219089Spjd 2172219089Spjd *path = '\0'; 2173219089Spjd 2174219089Spjd error = zfs_sa_setup(osp, &sa_table); 2175219089Spjd if (error != 0) 2176219089Spjd return (error); 2177219089Spjd 2178219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2179219089Spjd if (error != 0) 2180219089Spjd return (error); 2181219089Spjd 2182219089Spjd error = zfs_obj_to_stats_impl(hdl, sa_table, sb); 2183219089Spjd if (error != 0) { 2184219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2185219089Spjd return (error); 2186219089Spjd } 2187219089Spjd 2188219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2189219089Spjd 2190219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2191219089Spjd return (error); 2192219089Spjd} 2193