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. 23269002Sdelphij * Copyright (c) 2012, 2014 by Delphix. All rights reserved. 24168404Spjd */ 25168404Spjd 26169195Spjd/* Portions Copyright 2007 Jeremy Teo */ 27226732Smm/* Portions Copyright 2011 Martin Matuska <mm@FreeBSD.org> */ 28169195Spjd 29168404Spjd#ifdef _KERNEL 30168404Spjd#include <sys/types.h> 31168404Spjd#include <sys/param.h> 32168404Spjd#include <sys/time.h> 33168404Spjd#include <sys/systm.h> 34168404Spjd#include <sys/sysmacros.h> 35168404Spjd#include <sys/resource.h> 36168404Spjd#include <sys/mntent.h> 37185029Spjd#include <sys/u8_textprep.h> 38185029Spjd#include <sys/dsl_dataset.h> 39168404Spjd#include <sys/vfs.h> 40168404Spjd#include <sys/vnode.h> 41168404Spjd#include <sys/file.h> 42168404Spjd#include <sys/kmem.h> 43168404Spjd#include <sys/errno.h> 44168404Spjd#include <sys/unistd.h> 45168404Spjd#include <sys/atomic.h> 46168404Spjd#include <sys/zfs_dir.h> 47168404Spjd#include <sys/zfs_acl.h> 48168404Spjd#include <sys/zfs_ioctl.h> 49168404Spjd#include <sys/zfs_rlock.h> 50185029Spjd#include <sys/zfs_fuid.h> 51219089Spjd#include <sys/dnode.h> 52168404Spjd#include <sys/fs/zfs.h> 53185029Spjd#include <sys/kidmap.h> 54168404Spjd#endif /* _KERNEL */ 55168404Spjd 56168404Spjd#include <sys/dmu.h> 57276081Sdelphij#include <sys/dmu_objset.h> 58168404Spjd#include <sys/refcount.h> 59168404Spjd#include <sys/stat.h> 60168404Spjd#include <sys/zap.h> 61168404Spjd#include <sys/zfs_znode.h> 62219089Spjd#include <sys/sa.h> 63219089Spjd#include <sys/zfs_sa.h> 64219089Spjd#include <sys/zfs_stat.h> 65168404Spjd#include <sys/refcount.h> 66168404Spjd 67185029Spjd#include "zfs_prop.h" 68219089Spjd#include "zfs_comutil.h" 69185029Spjd 70173268Slulf/* Used by fstat(1). */ 71273736ShselaskySYSCTL_INT(_debug_sizeof, OID_AUTO, znode, CTLFLAG_RD, 72273736Shselasky SYSCTL_NULL_INT_PTR, sizeof(znode_t), "sizeof(znode_t)"); 73173268Slulf 74168404Spjd/* 75185029Spjd * Define ZNODE_STATS to turn on statistic gathering. By default, it is only 76185029Spjd * turned on when DEBUG is also defined. 77185029Spjd */ 78185029Spjd#ifdef DEBUG 79185029Spjd#define ZNODE_STATS 80185029Spjd#endif /* DEBUG */ 81185029Spjd 82185029Spjd#ifdef ZNODE_STATS 83185029Spjd#define ZNODE_STAT_ADD(stat) ((stat)++) 84185029Spjd#else 85185029Spjd#define ZNODE_STAT_ADD(stat) /* nothing */ 86185029Spjd#endif /* ZNODE_STATS */ 87185029Spjd 88185029Spjd/* 89168404Spjd * Functions needed for userland (ie: libzpool) are not put under 90168404Spjd * #ifdef_KERNEL; the rest of the functions have dependencies 91168404Spjd * (such as VFS logic) that will not compile easily in userland. 92168404Spjd */ 93168404Spjd#ifdef _KERNEL 94210470Smm/* 95210470Smm * Needed to close a small window in zfs_znode_move() that allows the zfsvfs to 96210470Smm * be freed before it can be safely accessed. 97210470Smm */ 98210470Smmkrwlock_t zfsvfs_lock; 99210470Smm 100185029Spjdstatic kmem_cache_t *znode_cache = NULL; 101168404Spjd 102168404Spjd/*ARGSUSED*/ 103168404Spjdstatic void 104185029Spjdznode_evict_error(dmu_buf_t *dbuf, void *user_ptr) 105168404Spjd{ 106185029Spjd /* 107185029Spjd * We should never drop all dbuf refs without first clearing 108185029Spjd * the eviction callback. 109185029Spjd */ 110185029Spjd panic("evicting znode %p\n", user_ptr); 111168404Spjd} 112168404Spjd 113168404Spjdextern struct vop_vector zfs_vnodeops; 114168404Spjdextern struct vop_vector zfs_fifoops; 115209962Smmextern struct vop_vector zfs_shareops; 116168404Spjd 117168404Spjdstatic int 118185029Spjdzfs_znode_cache_constructor(void *buf, void *arg, int kmflags) 119168404Spjd{ 120168404Spjd znode_t *zp = buf; 121168404Spjd 122185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 123185029Spjd 124185029Spjd list_link_init(&zp->z_link_node); 125185029Spjd 126168404Spjd mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); 127168404Spjd rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); 128168404Spjd rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); 129168404Spjd mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); 130168404Spjd 131168404Spjd mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); 132168404Spjd avl_create(&zp->z_range_avl, zfs_range_compare, 133168404Spjd sizeof (rl_t), offsetof(rl_t, r_node)); 134168404Spjd 135185029Spjd zp->z_dirlocks = NULL; 136211932Smm zp->z_acl_cached = NULL; 137253603Savg zp->z_vnode = NULL; 138219089Spjd zp->z_moved = 0; 139168404Spjd return (0); 140168404Spjd} 141168404Spjd 142168404Spjd/*ARGSUSED*/ 143168404Spjdstatic void 144185029Spjdzfs_znode_cache_destructor(void *buf, void *arg) 145168404Spjd{ 146168404Spjd znode_t *zp = buf; 147168404Spjd 148185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 149185029Spjd ASSERT(ZTOV(zp) == NULL); 150185029Spjd vn_free(ZTOV(zp)); 151185029Spjd ASSERT(!list_link_active(&zp->z_link_node)); 152168404Spjd mutex_destroy(&zp->z_lock); 153168404Spjd rw_destroy(&zp->z_parent_lock); 154168404Spjd rw_destroy(&zp->z_name_lock); 155168404Spjd mutex_destroy(&zp->z_acl_lock); 156185029Spjd avl_destroy(&zp->z_range_avl); 157168404Spjd mutex_destroy(&zp->z_range_lock); 158168404Spjd 159185029Spjd ASSERT(zp->z_dirlocks == NULL); 160211932Smm ASSERT(zp->z_acl_cached == NULL); 161168404Spjd} 162168404Spjd 163185029Spjd#ifdef ZNODE_STATS 164185029Spjdstatic struct { 165185029Spjd uint64_t zms_zfsvfs_invalid; 166210470Smm uint64_t zms_zfsvfs_recheck1; 167185029Spjd uint64_t zms_zfsvfs_unmounted; 168210470Smm uint64_t zms_zfsvfs_recheck2; 169185029Spjd uint64_t zms_obj_held; 170185029Spjd uint64_t zms_vnode_locked; 171185029Spjd uint64_t zms_not_only_dnlc; 172185029Spjd} znode_move_stats; 173185029Spjd#endif /* ZNODE_STATS */ 174185029Spjd 175219089Spjd#ifdef sun 176185029Spjdstatic void 177185029Spjdzfs_znode_move_impl(znode_t *ozp, znode_t *nzp) 178185029Spjd{ 179185029Spjd vnode_t *vp; 180185029Spjd 181185029Spjd /* Copy fields. */ 182185029Spjd nzp->z_zfsvfs = ozp->z_zfsvfs; 183185029Spjd 184185029Spjd /* Swap vnodes. */ 185185029Spjd vp = nzp->z_vnode; 186185029Spjd nzp->z_vnode = ozp->z_vnode; 187185029Spjd ozp->z_vnode = vp; /* let destructor free the overwritten vnode */ 188185029Spjd ZTOV(ozp)->v_data = ozp; 189185029Spjd ZTOV(nzp)->v_data = nzp; 190185029Spjd 191185029Spjd nzp->z_id = ozp->z_id; 192185029Spjd ASSERT(ozp->z_dirlocks == NULL); /* znode not in use */ 193185029Spjd ASSERT(avl_numnodes(&ozp->z_range_avl) == 0); 194185029Spjd nzp->z_unlinked = ozp->z_unlinked; 195185029Spjd nzp->z_atime_dirty = ozp->z_atime_dirty; 196185029Spjd nzp->z_zn_prefetch = ozp->z_zn_prefetch; 197185029Spjd nzp->z_blksz = ozp->z_blksz; 198185029Spjd nzp->z_seq = ozp->z_seq; 199185029Spjd nzp->z_mapcnt = ozp->z_mapcnt; 200185029Spjd nzp->z_gen = ozp->z_gen; 201185029Spjd nzp->z_sync_cnt = ozp->z_sync_cnt; 202219089Spjd nzp->z_is_sa = ozp->z_is_sa; 203219089Spjd nzp->z_sa_hdl = ozp->z_sa_hdl; 204219089Spjd bcopy(ozp->z_atime, nzp->z_atime, sizeof (uint64_t) * 2); 205219089Spjd nzp->z_links = ozp->z_links; 206219089Spjd nzp->z_size = ozp->z_size; 207219089Spjd nzp->z_pflags = ozp->z_pflags; 208219089Spjd nzp->z_uid = ozp->z_uid; 209219089Spjd nzp->z_gid = ozp->z_gid; 210219089Spjd nzp->z_mode = ozp->z_mode; 211185029Spjd 212211932Smm /* 213211932Smm * Since this is just an idle znode and kmem is already dealing with 214211932Smm * memory pressure, release any cached ACL. 215211932Smm */ 216211932Smm if (ozp->z_acl_cached) { 217211932Smm zfs_acl_free(ozp->z_acl_cached); 218211932Smm ozp->z_acl_cached = NULL; 219211932Smm } 220211932Smm 221219089Spjd sa_set_userp(nzp->z_sa_hdl, nzp); 222185029Spjd 223185029Spjd /* 224185029Spjd * Invalidate the original znode by clearing fields that provide a 225185029Spjd * pointer back to the znode. Set the low bit of the vfs pointer to 226185029Spjd * ensure that zfs_znode_move() recognizes the znode as invalid in any 227185029Spjd * subsequent callback. 228185029Spjd */ 229219089Spjd ozp->z_sa_hdl = NULL; 230185029Spjd POINTER_INVALIDATE(&ozp->z_zfsvfs); 231219089Spjd 232219089Spjd /* 233219089Spjd * Mark the znode. 234219089Spjd */ 235219089Spjd nzp->z_moved = 1; 236219089Spjd ozp->z_moved = (uint8_t)-1; 237185029Spjd} 238185029Spjd 239185029Spjd/*ARGSUSED*/ 240185029Spjdstatic kmem_cbrc_t 241185029Spjdzfs_znode_move(void *buf, void *newbuf, size_t size, void *arg) 242185029Spjd{ 243185029Spjd znode_t *ozp = buf, *nzp = newbuf; 244185029Spjd zfsvfs_t *zfsvfs; 245185029Spjd vnode_t *vp; 246185029Spjd 247185029Spjd /* 248185029Spjd * The znode is on the file system's list of known znodes if the vfs 249185029Spjd * pointer is valid. We set the low bit of the vfs pointer when freeing 250185029Spjd * the znode to invalidate it, and the memory patterns written by kmem 251185029Spjd * (baddcafe and deadbeef) set at least one of the two low bits. A newly 252185029Spjd * created znode sets the vfs pointer last of all to indicate that the 253185029Spjd * znode is known and in a valid state to be moved by this function. 254185029Spjd */ 255185029Spjd zfsvfs = ozp->z_zfsvfs; 256185029Spjd if (!POINTER_IS_VALID(zfsvfs)) { 257185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_invalid); 258185029Spjd return (KMEM_CBRC_DONT_KNOW); 259185029Spjd } 260185029Spjd 261185029Spjd /* 262210470Smm * Close a small window in which it's possible that the filesystem could 263210470Smm * be unmounted and freed, and zfsvfs, though valid in the previous 264210470Smm * statement, could point to unrelated memory by the time we try to 265210470Smm * prevent the filesystem from being unmounted. 266185029Spjd */ 267210470Smm rw_enter(&zfsvfs_lock, RW_WRITER); 268210470Smm if (zfsvfs != ozp->z_zfsvfs) { 269210470Smm rw_exit(&zfsvfs_lock); 270210470Smm ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck1); 271210470Smm return (KMEM_CBRC_DONT_KNOW); 272210470Smm } 273210470Smm 274210470Smm /* 275210470Smm * If the znode is still valid, then so is the file system. We know that 276210470Smm * no valid file system can be freed while we hold zfsvfs_lock, so we 277210470Smm * can safely ensure that the filesystem is not and will not be 278210470Smm * unmounted. The next statement is equivalent to ZFS_ENTER(). 279210470Smm */ 280269419Sdelphij rrm_enter(&zfsvfs->z_teardown_lock, RW_READER, FTAG); 281209962Smm if (zfsvfs->z_unmounted) { 282209962Smm ZFS_EXIT(zfsvfs); 283210470Smm rw_exit(&zfsvfs_lock); 284185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_unmounted); 285185029Spjd return (KMEM_CBRC_DONT_KNOW); 286185029Spjd } 287210470Smm rw_exit(&zfsvfs_lock); 288185029Spjd 289185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 290185029Spjd /* 291185029Spjd * Recheck the vfs pointer in case the znode was removed just before 292185029Spjd * acquiring the lock. 293185029Spjd */ 294185029Spjd if (zfsvfs != ozp->z_zfsvfs) { 295185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 296185029Spjd ZFS_EXIT(zfsvfs); 297210470Smm ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck2); 298185029Spjd return (KMEM_CBRC_DONT_KNOW); 299185029Spjd } 300185029Spjd 301185029Spjd /* 302185029Spjd * At this point we know that as long as we hold z_znodes_lock, the 303185029Spjd * znode cannot be freed and fields within the znode can be safely 304185029Spjd * accessed. Now, prevent a race with zfs_zget(). 305185029Spjd */ 306185029Spjd if (ZFS_OBJ_HOLD_TRYENTER(zfsvfs, ozp->z_id) == 0) { 307185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 308185029Spjd ZFS_EXIT(zfsvfs); 309185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_obj_held); 310185029Spjd return (KMEM_CBRC_LATER); 311185029Spjd } 312185029Spjd 313185029Spjd vp = ZTOV(ozp); 314185029Spjd if (mutex_tryenter(&vp->v_lock) == 0) { 315185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 316185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 317185029Spjd ZFS_EXIT(zfsvfs); 318185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_vnode_locked); 319185029Spjd return (KMEM_CBRC_LATER); 320185029Spjd } 321185029Spjd 322185029Spjd /* Only move znodes that are referenced _only_ by the DNLC. */ 323185029Spjd if (vp->v_count != 1 || !vn_in_dnlc(vp)) { 324185029Spjd mutex_exit(&vp->v_lock); 325185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 326185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 327185029Spjd ZFS_EXIT(zfsvfs); 328185029Spjd ZNODE_STAT_ADD(znode_move_stats.zms_not_only_dnlc); 329185029Spjd return (KMEM_CBRC_LATER); 330185029Spjd } 331185029Spjd 332185029Spjd /* 333185029Spjd * The znode is known and in a valid state to move. We're holding the 334185029Spjd * locks needed to execute the critical section. 335185029Spjd */ 336185029Spjd zfs_znode_move_impl(ozp, nzp); 337185029Spjd mutex_exit(&vp->v_lock); 338185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); 339185029Spjd 340185029Spjd list_link_replace(&ozp->z_link_node, &nzp->z_link_node); 341185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 342185029Spjd ZFS_EXIT(zfsvfs); 343185029Spjd 344185029Spjd return (KMEM_CBRC_YES); 345185029Spjd} 346185029Spjd#endif /* sun */ 347185029Spjd 348168404Spjdvoid 349168404Spjdzfs_znode_init(void) 350168404Spjd{ 351168404Spjd /* 352168404Spjd * Initialize zcache 353168404Spjd */ 354210470Smm rw_init(&zfsvfs_lock, NULL, RW_DEFAULT, NULL); 355168404Spjd ASSERT(znode_cache == NULL); 356168404Spjd znode_cache = kmem_cache_create("zfs_znode_cache", 357253603Savg sizeof (znode_t), 0, zfs_znode_cache_constructor, 358168404Spjd zfs_znode_cache_destructor, NULL, NULL, NULL, 0); 359185029Spjd kmem_cache_set_move(znode_cache, zfs_znode_move); 360168404Spjd} 361168404Spjd 362168404Spjdvoid 363168404Spjdzfs_znode_fini(void) 364168404Spjd{ 365219089Spjd#ifdef sun 366168404Spjd /* 367219089Spjd * Cleanup vfs & vnode ops 368219089Spjd */ 369219089Spjd zfs_remove_op_tables(); 370219089Spjd#endif /* sun */ 371219089Spjd 372219089Spjd /* 373168404Spjd * Cleanup zcache 374168404Spjd */ 375168404Spjd if (znode_cache) 376168404Spjd kmem_cache_destroy(znode_cache); 377168404Spjd znode_cache = NULL; 378210470Smm rw_destroy(&zfsvfs_lock); 379168404Spjd} 380168404Spjd 381219089Spjd#ifdef sun 382219089Spjdstruct vnodeops *zfs_dvnodeops; 383219089Spjdstruct vnodeops *zfs_fvnodeops; 384219089Spjdstruct vnodeops *zfs_symvnodeops; 385219089Spjdstruct vnodeops *zfs_xdvnodeops; 386219089Spjdstruct vnodeops *zfs_evnodeops; 387219089Spjdstruct vnodeops *zfs_sharevnodeops; 388219089Spjd 389219089Spjdvoid 390219089Spjdzfs_remove_op_tables() 391219089Spjd{ 392219089Spjd /* 393219089Spjd * Remove vfs ops 394219089Spjd */ 395219089Spjd ASSERT(zfsfstype); 396219089Spjd (void) vfs_freevfsops_by_type(zfsfstype); 397219089Spjd zfsfstype = 0; 398219089Spjd 399219089Spjd /* 400219089Spjd * Remove vnode ops 401219089Spjd */ 402219089Spjd if (zfs_dvnodeops) 403219089Spjd vn_freevnodeops(zfs_dvnodeops); 404219089Spjd if (zfs_fvnodeops) 405219089Spjd vn_freevnodeops(zfs_fvnodeops); 406219089Spjd if (zfs_symvnodeops) 407219089Spjd vn_freevnodeops(zfs_symvnodeops); 408219089Spjd if (zfs_xdvnodeops) 409219089Spjd vn_freevnodeops(zfs_xdvnodeops); 410219089Spjd if (zfs_evnodeops) 411219089Spjd vn_freevnodeops(zfs_evnodeops); 412219089Spjd if (zfs_sharevnodeops) 413219089Spjd vn_freevnodeops(zfs_sharevnodeops); 414219089Spjd 415219089Spjd zfs_dvnodeops = NULL; 416219089Spjd zfs_fvnodeops = NULL; 417219089Spjd zfs_symvnodeops = NULL; 418219089Spjd zfs_xdvnodeops = NULL; 419219089Spjd zfs_evnodeops = NULL; 420219089Spjd zfs_sharevnodeops = NULL; 421219089Spjd} 422219089Spjd 423219089Spjdextern const fs_operation_def_t zfs_dvnodeops_template[]; 424219089Spjdextern const fs_operation_def_t zfs_fvnodeops_template[]; 425219089Spjdextern const fs_operation_def_t zfs_xdvnodeops_template[]; 426219089Spjdextern const fs_operation_def_t zfs_symvnodeops_template[]; 427219089Spjdextern const fs_operation_def_t zfs_evnodeops_template[]; 428219089Spjdextern const fs_operation_def_t zfs_sharevnodeops_template[]; 429219089Spjd 430168404Spjdint 431219089Spjdzfs_create_op_tables() 432219089Spjd{ 433219089Spjd int error; 434219089Spjd 435219089Spjd /* 436219089Spjd * zfs_dvnodeops can be set if mod_remove() calls mod_installfs() 437219089Spjd * due to a failure to remove the the 2nd modlinkage (zfs_modldrv). 438219089Spjd * In this case we just return as the ops vectors are already set up. 439219089Spjd */ 440219089Spjd if (zfs_dvnodeops) 441219089Spjd return (0); 442219089Spjd 443219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_dvnodeops_template, 444219089Spjd &zfs_dvnodeops); 445219089Spjd if (error) 446219089Spjd return (error); 447219089Spjd 448219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_fvnodeops_template, 449219089Spjd &zfs_fvnodeops); 450219089Spjd if (error) 451219089Spjd return (error); 452219089Spjd 453219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_symvnodeops_template, 454219089Spjd &zfs_symvnodeops); 455219089Spjd if (error) 456219089Spjd return (error); 457219089Spjd 458219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_xdvnodeops_template, 459219089Spjd &zfs_xdvnodeops); 460219089Spjd if (error) 461219089Spjd return (error); 462219089Spjd 463219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_evnodeops_template, 464219089Spjd &zfs_evnodeops); 465219089Spjd if (error) 466219089Spjd return (error); 467219089Spjd 468219089Spjd error = vn_make_ops(MNTTYPE_ZFS, zfs_sharevnodeops_template, 469219089Spjd &zfs_sharevnodeops); 470219089Spjd 471219089Spjd return (error); 472219089Spjd} 473219089Spjd#endif /* sun */ 474219089Spjd 475219089Spjdint 476209962Smmzfs_create_share_dir(zfsvfs_t *zfsvfs, dmu_tx_t *tx) 477168404Spjd{ 478209962Smm zfs_acl_ids_t acl_ids; 479209962Smm vattr_t vattr; 480209962Smm znode_t *sharezp; 481209962Smm znode_t *zp; 482209962Smm int error; 483168404Spjd 484209962Smm vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 485209962Smm vattr.va_type = VDIR; 486209962Smm vattr.va_mode = S_IFDIR|0555; 487209962Smm vattr.va_uid = crgetuid(kcred); 488209962Smm vattr.va_gid = crgetgid(kcred); 489168404Spjd 490209962Smm sharezp = kmem_cache_alloc(znode_cache, KM_SLEEP); 491219089Spjd ASSERT(!POINTER_IS_VALID(sharezp->z_zfsvfs)); 492219089Spjd sharezp->z_moved = 0; 493209962Smm sharezp->z_unlinked = 0; 494209962Smm sharezp->z_atime_dirty = 0; 495209962Smm sharezp->z_zfsvfs = zfsvfs; 496219089Spjd sharezp->z_is_sa = zfsvfs->z_use_sa; 497168404Spjd 498209962Smm VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, 499209962Smm kcred, NULL, &acl_ids)); 500219089Spjd zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); 501209962Smm ASSERT3P(zp, ==, sharezp); 502209962Smm POINTER_INVALIDATE(&sharezp->z_zfsvfs); 503209962Smm error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, 504209962Smm ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); 505209962Smm zfsvfs->z_shares_dir = sharezp->z_id; 506168404Spjd 507209962Smm zfs_acl_ids_free(&acl_ids); 508219089Spjd sa_handle_destroy(sharezp->z_sa_hdl); 509209962Smm kmem_cache_free(znode_cache, sharezp); 510168404Spjd 511209962Smm return (error); 512168404Spjd} 513168404Spjd 514168404Spjd/* 515168404Spjd * define a couple of values we need available 516168404Spjd * for both 64 and 32 bit environments. 517168404Spjd */ 518168404Spjd#ifndef NBITSMINOR64 519168404Spjd#define NBITSMINOR64 32 520168404Spjd#endif 521168404Spjd#ifndef MAXMAJ64 522168404Spjd#define MAXMAJ64 0xffffffffUL 523168404Spjd#endif 524168404Spjd#ifndef MAXMIN64 525168404Spjd#define MAXMIN64 0xffffffffUL 526168404Spjd#endif 527168404Spjd 528168404Spjd/* 529168404Spjd * Create special expldev for ZFS private use. 530168404Spjd * Can't use standard expldev since it doesn't do 531168404Spjd * what we want. The standard expldev() takes a 532168404Spjd * dev32_t in LP64 and expands it to a long dev_t. 533168404Spjd * We need an interface that takes a dev32_t in ILP32 534168404Spjd * and expands it to a long dev_t. 535168404Spjd */ 536168404Spjdstatic uint64_t 537168404Spjdzfs_expldev(dev_t dev) 538168404Spjd{ 539187830Sed return (((uint64_t)major(dev) << NBITSMINOR64) | minor(dev)); 540168404Spjd} 541168404Spjd/* 542168404Spjd * Special cmpldev for ZFS private use. 543168404Spjd * Can't use standard cmpldev since it takes 544168404Spjd * a long dev_t and compresses it to dev32_t in 545168404Spjd * LP64. We need to do a compaction of a long dev_t 546168404Spjd * to a dev32_t in ILP32. 547168404Spjd */ 548168404Spjddev_t 549168404Spjdzfs_cmpldev(uint64_t dev) 550168404Spjd{ 551168958Spjd return (makedev((dev >> NBITSMINOR64), (dev & MAXMIN64))); 552168404Spjd} 553168404Spjd 554185029Spjdstatic void 555219089Spjdzfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp, 556219089Spjd dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) 557185029Spjd{ 558185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs) || (zfsvfs == zp->z_zfsvfs)); 559185029Spjd ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zfsvfs, zp->z_id))); 560185029Spjd 561185029Spjd mutex_enter(&zp->z_lock); 562185029Spjd 563219089Spjd ASSERT(zp->z_sa_hdl == NULL); 564211932Smm ASSERT(zp->z_acl_cached == NULL); 565219089Spjd if (sa_hdl == NULL) { 566219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, zp, 567219089Spjd SA_HDL_SHARED, &zp->z_sa_hdl)); 568219089Spjd } else { 569219089Spjd zp->z_sa_hdl = sa_hdl; 570219089Spjd sa_set_userp(sa_hdl, zp); 571219089Spjd } 572185029Spjd 573219089Spjd zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; 574185029Spjd 575185029Spjd /* 576185029Spjd * Slap on VROOT if we are the root znode 577185029Spjd */ 578185029Spjd if (zp->z_id == zfsvfs->z_root) 579185029Spjd ZTOV(zp)->v_flag |= VROOT; 580185029Spjd 581185029Spjd mutex_exit(&zp->z_lock); 582185029Spjd vn_exists(ZTOV(zp)); 583185029Spjd} 584185029Spjd 585185029Spjdvoid 586185029Spjdzfs_znode_dmu_fini(znode_t *zp) 587185029Spjd{ 588185029Spjd ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zp->z_zfsvfs, zp->z_id)) || 589185029Spjd zp->z_unlinked || 590185029Spjd RW_WRITE_HELD(&zp->z_zfsvfs->z_teardown_inactive_lock)); 591219089Spjd 592219089Spjd sa_handle_destroy(zp->z_sa_hdl); 593219089Spjd zp->z_sa_hdl = NULL; 594185029Spjd} 595185029Spjd 596225153Spjdstatic void 597225153Spjdzfs_vnode_forget(vnode_t *vp) 598225153Spjd{ 599225153Spjd 600242571Savg /* copied from insmntque_stddtr */ 601225153Spjd vp->v_data = NULL; 602242571Savg vp->v_op = &dead_vnodeops; 603242571Savg vgone(vp); 604242571Savg vput(vp); 605225153Spjd} 606225153Spjd 607168404Spjd/* 608168404Spjd * Construct a new znode/vnode and intialize. 609168404Spjd * 610168404Spjd * This does not do a call to dmu_set_user() that is 611168404Spjd * up to the caller to do, in case you don't want to 612168404Spjd * return the znode 613168404Spjd */ 614168404Spjdstatic znode_t * 615219089Spjdzfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, int blksz, 616219089Spjd dmu_object_type_t obj_type, sa_handle_t *hdl) 617168404Spjd{ 618168404Spjd znode_t *zp; 619168404Spjd vnode_t *vp; 620219089Spjd uint64_t mode; 621219089Spjd uint64_t parent; 622219089Spjd sa_bulk_attr_t bulk[9]; 623219089Spjd int count = 0; 624253603Savg int error; 625168404Spjd 626168404Spjd zp = kmem_cache_alloc(znode_cache, KM_SLEEP); 627168404Spjd 628262112Savg KASSERT(curthread->td_vp_reserv > 0, 629262112Savg ("zfs_znode_alloc: getnewvnode without any vnodes reserved")); 630253603Savg error = getnewvnode("zfs", zfsvfs->z_parent->z_vfs, &zfs_vnodeops, &vp); 631253603Savg if (error != 0) { 632253603Savg kmem_cache_free(znode_cache, zp); 633253603Savg return (NULL); 634253603Savg } 635253603Savg zp->z_vnode = vp; 636253603Savg vp->v_data = zp; 637253603Savg 638168404Spjd ASSERT(zp->z_dirlocks == NULL); 639185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 640219089Spjd zp->z_moved = 0; 641168404Spjd 642185029Spjd /* 643185029Spjd * Defer setting z_zfsvfs until the znode is ready to be a candidate for 644185029Spjd * the zfs_znode_move() callback. 645185029Spjd */ 646219089Spjd zp->z_sa_hdl = NULL; 647168404Spjd zp->z_unlinked = 0; 648168404Spjd zp->z_atime_dirty = 0; 649168404Spjd zp->z_mapcnt = 0; 650185029Spjd zp->z_id = db->db_object; 651168404Spjd zp->z_blksz = blksz; 652168404Spjd zp->z_seq = 0x7A4653; 653168404Spjd zp->z_sync_cnt = 0; 654168404Spjd 655185029Spjd vp = ZTOV(zp); 656168404Spjd 657219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl); 658185029Spjd 659219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); 660219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, &zp->z_gen, 8); 661219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 662219089Spjd &zp->z_size, 8); 663219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 664219089Spjd &zp->z_links, 8); 665219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 666219089Spjd &zp->z_pflags, 8); 667219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); 668219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 669219089Spjd &zp->z_atime, 16); 670219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 671219089Spjd &zp->z_uid, 8); 672219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 673219089Spjd &zp->z_gid, 8); 674185029Spjd 675219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { 676219089Spjd if (hdl == NULL) 677219089Spjd sa_handle_destroy(zp->z_sa_hdl); 678225153Spjd zfs_vnode_forget(vp); 679225153Spjd zp->z_vnode = NULL; 680219089Spjd kmem_cache_free(znode_cache, zp); 681219089Spjd return (NULL); 682219089Spjd } 683168404Spjd 684219089Spjd zp->z_mode = mode; 685219089Spjd 686219089Spjd vp->v_type = IFTOVT((mode_t)mode); 687219089Spjd 688168404Spjd switch (vp->v_type) { 689168404Spjd case VDIR: 690168404Spjd zp->z_zn_prefetch = B_TRUE; /* z_prefetch default is enabled */ 691168404Spjd break; 692224251Sdelphij#ifdef sun 693224231Sdelphij case VBLK: 694224231Sdelphij case VCHR: 695224231Sdelphij { 696224231Sdelphij uint64_t rdev; 697224231Sdelphij VERIFY(sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zfsvfs), 698224231Sdelphij &rdev, sizeof (rdev)) == 0); 699224231Sdelphij 700224251Sdelphij vp->v_rdev = zfs_cmpldev(rdev); 701224231Sdelphij } 702224231Sdelphij break; 703224251Sdelphij#endif /* sun */ 704168404Spjd case VFIFO: 705224252Sdelphij#ifdef sun 706224252Sdelphij case VSOCK: 707224252Sdelphij case VDOOR: 708224252Sdelphij#endif /* sun */ 709168404Spjd vp->v_op = &zfs_fifoops; 710168404Spjd break; 711219089Spjd case VREG: 712219089Spjd if (parent == zfsvfs->z_shares_dir) { 713219089Spjd ASSERT(zp->z_uid == 0 && zp->z_gid == 0); 714209962Smm vp->v_op = &zfs_shareops; 715209962Smm } 716209962Smm break; 717224252Sdelphij#ifdef sun 718224252Sdelphij case VLNK: 719224252Sdelphij vn_setops(vp, zfs_symvnodeops); 720224252Sdelphij break; 721224252Sdelphij default: 722224252Sdelphij vn_setops(vp, zfs_evnodeops); 723224252Sdelphij break; 724224252Sdelphij#endif /* sun */ 725168404Spjd } 726168404Spjd 727185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 728185029Spjd list_insert_tail(&zfsvfs->z_all_znodes, zp); 729185029Spjd membar_producer(); 730168404Spjd /* 731185029Spjd * Everything else must be valid before assigning z_zfsvfs makes the 732185029Spjd * znode eligible for zfs_znode_move(). 733168404Spjd */ 734185029Spjd zp->z_zfsvfs = zfsvfs; 735185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 736168404Spjd 737253603Savg /* 738253603Savg * Acquire vnode lock before making it available to the world. 739253603Savg */ 740253603Savg vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 741253603Savg VN_LOCK_AREC(vp); 742253603Savg if (vp->v_type != VFIFO) 743253603Savg VN_LOCK_ASHARE(vp); 744253603Savg 745168404Spjd VFS_HOLD(zfsvfs->z_vfs); 746185029Spjd return (zp); 747168404Spjd} 748168404Spjd 749219089Spjdstatic uint64_t empty_xattr; 750219089Spjdstatic uint64_t pad[4]; 751219089Spjdstatic zfs_acl_phys_t acl_phys; 752168404Spjd/* 753168404Spjd * Create a new DMU object to hold a zfs znode. 754168404Spjd * 755168404Spjd * IN: dzp - parent directory for new znode 756168404Spjd * vap - file attributes for new znode 757168404Spjd * tx - dmu transaction id for zap operations 758168404Spjd * cr - credentials of caller 759168404Spjd * flag - flags: 760168404Spjd * IS_ROOT_NODE - new object will be root 761168404Spjd * IS_XATTR - new object is an attribute 762185029Spjd * bonuslen - length of bonus buffer 763185029Spjd * setaclp - File/Dir initial ACL 764185029Spjd * fuidp - Tracks fuid allocation. 765168404Spjd * 766185029Spjd * OUT: zpp - allocated znode 767168404Spjd * 768168404Spjd */ 769168404Spjdvoid 770185029Spjdzfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, 771219089Spjd uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) 772168404Spjd{ 773219089Spjd uint64_t crtime[2], atime[2], mtime[2], ctime[2]; 774219089Spjd uint64_t mode, size, links, parent, pflags; 775219089Spjd uint64_t dzp_pflags = 0; 776219089Spjd uint64_t rdev = 0; 777219089Spjd zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 778185029Spjd dmu_buf_t *db; 779168404Spjd timestruc_t now; 780185029Spjd uint64_t gen, obj; 781168404Spjd int err; 782219089Spjd int bonuslen; 783219089Spjd sa_handle_t *sa_hdl; 784219089Spjd dmu_object_type_t obj_type; 785219089Spjd sa_bulk_attr_t sa_attrs[ZPL_END]; 786219089Spjd int cnt = 0; 787219089Spjd zfs_acl_locator_cb_t locate = { 0 }; 788168404Spjd 789168404Spjd ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE)); 790168404Spjd 791209962Smm if (zfsvfs->z_replay) { 792185029Spjd obj = vap->va_nodeid; 793168404Spjd now = vap->va_ctime; /* see zfs_replay_create() */ 794168404Spjd gen = vap->va_nblocks; /* ditto */ 795168404Spjd } else { 796185029Spjd obj = 0; 797168404Spjd gethrestime(&now); 798168404Spjd gen = dmu_tx_get_txg(tx); 799168404Spjd } 800168404Spjd 801219089Spjd obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; 802219089Spjd bonuslen = (obj_type == DMU_OT_SA) ? 803219089Spjd DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; 804219089Spjd 805168404Spjd /* 806168404Spjd * Create a new DMU object. 807168404Spjd */ 808168404Spjd /* 809168404Spjd * There's currently no mechanism for pre-reading the blocks that will 810219089Spjd * be needed to allocate a new object, so we accept the small chance 811168404Spjd * that there will be an i/o error and we will fail one of the 812168404Spjd * assertions below. 813168404Spjd */ 814168404Spjd if (vap->va_type == VDIR) { 815209962Smm if (zfsvfs->z_replay) { 816263397Sdelphij VERIFY0(zap_create_claim_norm(zfsvfs->z_os, obj, 817185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 818263397Sdelphij obj_type, bonuslen, tx)); 819168404Spjd } else { 820185029Spjd obj = zap_create_norm(zfsvfs->z_os, 821185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 822219089Spjd obj_type, bonuslen, tx); 823168404Spjd } 824168404Spjd } else { 825209962Smm if (zfsvfs->z_replay) { 826263397Sdelphij VERIFY0(dmu_object_claim(zfsvfs->z_os, obj, 827168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 828263397Sdelphij obj_type, bonuslen, tx)); 829168404Spjd } else { 830185029Spjd obj = dmu_object_alloc(zfsvfs->z_os, 831168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 832219089Spjd obj_type, bonuslen, tx); 833168404Spjd } 834168404Spjd } 835207334Spjd 836207334Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 837219089Spjd VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); 838168404Spjd 839168404Spjd /* 840168404Spjd * If this is the root, fix up the half-initialized parent pointer 841168404Spjd * to reference the just-allocated physical data area. 842168404Spjd */ 843168404Spjd if (flag & IS_ROOT_NODE) { 844185029Spjd dzp->z_id = obj; 845219089Spjd } else { 846219089Spjd dzp_pflags = dzp->z_pflags; 847168404Spjd } 848168404Spjd 849168404Spjd /* 850168404Spjd * If parent is an xattr, so am I. 851168404Spjd */ 852219089Spjd if (dzp_pflags & ZFS_XATTR) { 853168404Spjd flag |= IS_XATTR; 854168404Spjd } 855168404Spjd 856185029Spjd if (zfsvfs->z_use_fuids) 857219089Spjd pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; 858219089Spjd else 859219089Spjd pflags = 0; 860185029Spjd 861168404Spjd if (vap->va_type == VDIR) { 862219089Spjd size = 2; /* contents ("." and "..") */ 863219089Spjd links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; 864219089Spjd } else { 865219089Spjd size = links = 0; 866168404Spjd } 867168404Spjd 868219089Spjd if (vap->va_type == VBLK || vap->va_type == VCHR) { 869219089Spjd rdev = zfs_expldev(vap->va_rdev); 870219089Spjd } 871219089Spjd 872219089Spjd parent = dzp->z_id; 873219089Spjd mode = acl_ids->z_mode; 874168404Spjd if (flag & IS_XATTR) 875219089Spjd pflags |= ZFS_XATTR; 876168404Spjd 877219089Spjd /* 878219089Spjd * No execs denied will be deterimed when zfs_mode_compute() is called. 879219089Spjd */ 880219089Spjd pflags |= acl_ids->z_aclp->z_hints & 881219089Spjd (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| 882219089Spjd ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); 883168404Spjd 884219089Spjd ZFS_TIME_ENCODE(&now, crtime); 885219089Spjd ZFS_TIME_ENCODE(&now, ctime); 886168404Spjd 887168404Spjd if (vap->va_mask & AT_ATIME) { 888219089Spjd ZFS_TIME_ENCODE(&vap->va_atime, atime); 889168404Spjd } else { 890219089Spjd ZFS_TIME_ENCODE(&now, atime); 891168404Spjd } 892168404Spjd 893168404Spjd if (vap->va_mask & AT_MTIME) { 894219089Spjd ZFS_TIME_ENCODE(&vap->va_mtime, mtime); 895168404Spjd } else { 896219089Spjd ZFS_TIME_ENCODE(&now, mtime); 897168404Spjd } 898168404Spjd 899219089Spjd /* Now add in all of the "SA" attributes */ 900219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, 901219089Spjd &sa_hdl)); 902219089Spjd 903219089Spjd /* 904219089Spjd * Setup the array of attributes to be replaced/set on the new file 905219089Spjd * 906219089Spjd * order for DMU_OT_ZNODE is critical since it needs to be constructed 907219089Spjd * in the old znode_phys_t format. Don't change this ordering 908219089Spjd */ 909219089Spjd 910219089Spjd if (obj_type == DMU_OT_ZNODE) { 911219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 912219089Spjd NULL, &atime, 16); 913219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 914219089Spjd NULL, &mtime, 16); 915219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 916219089Spjd NULL, &ctime, 16); 917219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 918219089Spjd NULL, &crtime, 16); 919219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 920219089Spjd NULL, &gen, 8); 921219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 922219089Spjd NULL, &mode, 8); 923219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 924219089Spjd NULL, &size, 8); 925219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 926219089Spjd NULL, &parent, 8); 927219089Spjd } else { 928219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 929219089Spjd NULL, &mode, 8); 930219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 931219089Spjd NULL, &size, 8); 932219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 933219089Spjd NULL, &gen, 8); 934219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 935219089Spjd &acl_ids->z_fuid, 8); 936219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 937219089Spjd &acl_ids->z_fgid, 8); 938219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 939219089Spjd NULL, &parent, 8); 940219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 941219089Spjd NULL, &pflags, 8); 942219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 943219089Spjd NULL, &atime, 16); 944219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 945219089Spjd NULL, &mtime, 16); 946219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 947219089Spjd NULL, &ctime, 16); 948219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 949219089Spjd NULL, &crtime, 16); 950219089Spjd } 951219089Spjd 952219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); 953219089Spjd 954219089Spjd if (obj_type == DMU_OT_ZNODE) { 955219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, 956219089Spjd &empty_xattr, 8); 957219089Spjd } 958219089Spjd if (obj_type == DMU_OT_ZNODE || 959219089Spjd (vap->va_type == VBLK || vap->va_type == VCHR)) { 960219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), 961219089Spjd NULL, &rdev, 8); 962219089Spjd 963219089Spjd } 964219089Spjd if (obj_type == DMU_OT_ZNODE) { 965219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 966219089Spjd NULL, &pflags, 8); 967219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 968219089Spjd &acl_ids->z_fuid, 8); 969219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 970219089Spjd &acl_ids->z_fgid, 8); 971219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, 972219089Spjd sizeof (uint64_t) * 4); 973219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, 974219089Spjd &acl_phys, sizeof (zfs_acl_phys_t)); 975219089Spjd } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { 976219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, 977219089Spjd &acl_ids->z_aclp->z_acl_count, 8); 978219089Spjd locate.cb_aclp = acl_ids->z_aclp; 979219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), 980219089Spjd zfs_acl_data_locator, &locate, 981219089Spjd acl_ids->z_aclp->z_acl_bytes); 982219089Spjd mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, 983219089Spjd acl_ids->z_fuid, acl_ids->z_fgid); 984219089Spjd } 985219089Spjd 986219089Spjd VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); 987219089Spjd 988185029Spjd if (!(flag & IS_ROOT_NODE)) { 989219089Spjd *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); 990219089Spjd ASSERT(*zpp != NULL); 991185029Spjd } else { 992185029Spjd /* 993185029Spjd * If we are creating the root node, the "parent" we 994185029Spjd * passed in is the znode for the root. 995185029Spjd */ 996185029Spjd *zpp = dzp; 997219089Spjd 998219089Spjd (*zpp)->z_sa_hdl = sa_hdl; 999185029Spjd } 1000219089Spjd 1001219089Spjd (*zpp)->z_pflags = pflags; 1002219089Spjd (*zpp)->z_mode = mode; 1003219089Spjd 1004209962Smm if (vap->va_mask & AT_XVATTR) 1005219089Spjd zfs_xvattr_set(*zpp, (xvattr_t *)vap, tx); 1006219089Spjd 1007219089Spjd if (obj_type == DMU_OT_ZNODE || 1008219089Spjd acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { 1009263397Sdelphij VERIFY0(zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx)); 1010219089Spjd } 1011185029Spjd if (!(flag & IS_ROOT_NODE)) { 1012185029Spjd vnode_t *vp; 1013168404Spjd 1014185029Spjd vp = ZTOV(*zpp); 1015185029Spjd vp->v_vflag |= VV_FORCEINSMQ; 1016185029Spjd err = insmntque(vp, zfsvfs->z_vfs); 1017185029Spjd vp->v_vflag &= ~VV_FORCEINSMQ; 1018185029Spjd KASSERT(err == 0, ("insmntque() failed: error %d", err)); 1019185029Spjd } 1020219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1021185029Spjd} 1022168404Spjd 1023219089Spjd/* 1024251631Sdelphij * Update in-core attributes. It is assumed the caller will be doing an 1025251631Sdelphij * sa_bulk_update to push the changes out. 1026219089Spjd */ 1027185029Spjdvoid 1028219089Spjdzfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) 1029185029Spjd{ 1030185029Spjd xoptattr_t *xoap; 1031168404Spjd 1032185029Spjd xoap = xva_getxoptattr(xvap); 1033185029Spjd ASSERT(xoap); 1034168404Spjd 1035185029Spjd if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { 1036219089Spjd uint64_t times[2]; 1037219089Spjd ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); 1038219089Spjd (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), 1039219089Spjd ×, sizeof (times), tx); 1040185029Spjd XVA_SET_RTN(xvap, XAT_CREATETIME); 1041168404Spjd } 1042185029Spjd if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { 1043219089Spjd ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, 1044219089Spjd zp->z_pflags, tx); 1045185029Spjd XVA_SET_RTN(xvap, XAT_READONLY); 1046185029Spjd } 1047185029Spjd if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { 1048219089Spjd ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, 1049219089Spjd zp->z_pflags, tx); 1050185029Spjd XVA_SET_RTN(xvap, XAT_HIDDEN); 1051185029Spjd } 1052185029Spjd if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { 1053219089Spjd ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, 1054219089Spjd zp->z_pflags, tx); 1055185029Spjd XVA_SET_RTN(xvap, XAT_SYSTEM); 1056185029Spjd } 1057185029Spjd if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { 1058219089Spjd ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, 1059219089Spjd zp->z_pflags, tx); 1060185029Spjd XVA_SET_RTN(xvap, XAT_ARCHIVE); 1061185029Spjd } 1062185029Spjd if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { 1063219089Spjd ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, 1064219089Spjd zp->z_pflags, tx); 1065185029Spjd XVA_SET_RTN(xvap, XAT_IMMUTABLE); 1066185029Spjd } 1067185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { 1068219089Spjd ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, 1069219089Spjd zp->z_pflags, tx); 1070185029Spjd XVA_SET_RTN(xvap, XAT_NOUNLINK); 1071185029Spjd } 1072185029Spjd if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { 1073219089Spjd ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, 1074219089Spjd zp->z_pflags, tx); 1075185029Spjd XVA_SET_RTN(xvap, XAT_APPENDONLY); 1076185029Spjd } 1077185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { 1078219089Spjd ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, 1079219089Spjd zp->z_pflags, tx); 1080185029Spjd XVA_SET_RTN(xvap, XAT_NODUMP); 1081185029Spjd } 1082185029Spjd if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { 1083219089Spjd ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, 1084219089Spjd zp->z_pflags, tx); 1085185029Spjd XVA_SET_RTN(xvap, XAT_OPAQUE); 1086185029Spjd } 1087185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { 1088185029Spjd ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, 1089219089Spjd xoap->xoa_av_quarantined, zp->z_pflags, tx); 1090185029Spjd XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); 1091185029Spjd } 1092185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { 1093219089Spjd ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, 1094219089Spjd zp->z_pflags, tx); 1095185029Spjd XVA_SET_RTN(xvap, XAT_AV_MODIFIED); 1096185029Spjd } 1097185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { 1098219089Spjd zfs_sa_set_scanstamp(zp, xvap, tx); 1099185029Spjd XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); 1100185029Spjd } 1101219089Spjd if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { 1102219089Spjd ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, 1103219089Spjd zp->z_pflags, tx); 1104219089Spjd XVA_SET_RTN(xvap, XAT_REPARSE); 1105219089Spjd } 1106219089Spjd if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { 1107219089Spjd ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, 1108219089Spjd zp->z_pflags, tx); 1109219089Spjd XVA_SET_RTN(xvap, XAT_OFFLINE); 1110219089Spjd } 1111219089Spjd if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { 1112219089Spjd ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, 1113219089Spjd zp->z_pflags, tx); 1114219089Spjd XVA_SET_RTN(xvap, XAT_SPARSE); 1115219089Spjd } 1116168404Spjd} 1117168404Spjd 1118168404Spjdint 1119168404Spjdzfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) 1120168404Spjd{ 1121168404Spjd dmu_object_info_t doi; 1122168404Spjd dmu_buf_t *db; 1123168404Spjd znode_t *zp; 1124243520Savg vnode_t *vp; 1125243520Savg sa_handle_t *hdl; 1126243520Savg struct thread *td; 1127243520Savg int locked; 1128219089Spjd int err; 1129168404Spjd 1130243520Savg td = curthread; 1131241628Savg getnewvnode_reserve(1); 1132185029Spjdagain: 1133243520Savg *zpp = NULL; 1134168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1135168404Spjd 1136219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1137168404Spjd if (err) { 1138168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1139241628Savg getnewvnode_drop_reserve(); 1140168404Spjd return (err); 1141168404Spjd } 1142168404Spjd 1143168404Spjd dmu_object_info_from_db(db, &doi); 1144219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1145219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1146219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1147219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1148219089Spjd sa_buf_rele(db, NULL); 1149168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1150249195Smm#ifdef __FreeBSD__ 1151241628Savg getnewvnode_drop_reserve(); 1152249195Smm#endif 1153249195Smm return (SET_ERROR(EINVAL)); 1154168404Spjd } 1155168404Spjd 1156219089Spjd hdl = dmu_buf_get_user(db); 1157219089Spjd if (hdl != NULL) { 1158219089Spjd zp = sa_get_userdata(hdl); 1159168404Spjd 1160219089Spjd 1161185029Spjd /* 1162219089Spjd * Since "SA" does immediate eviction we 1163219089Spjd * should never find a sa handle that doesn't 1164219089Spjd * know about the znode. 1165185029Spjd */ 1166219089Spjd 1167219089Spjd ASSERT3P(zp, !=, NULL); 1168219089Spjd 1169219089Spjd mutex_enter(&zp->z_lock); 1170168404Spjd ASSERT3U(zp->z_id, ==, obj_num); 1171168404Spjd if (zp->z_unlinked) { 1172249195Smm err = SET_ERROR(ENOENT); 1173168404Spjd } else { 1174197458Spjd vp = ZTOV(zp); 1175185029Spjd *zpp = zp; 1176185029Spjd err = 0; 1177168404Spjd } 1178219089Spjd sa_buf_rele(db, NULL); 1179243520Savg 1180243520Savg /* Don't let the vnode disappear after ZFS_OBJ_HOLD_EXIT. */ 1181243520Savg if (err == 0) 1182243520Savg VN_HOLD(vp); 1183243520Savg 1184168404Spjd mutex_exit(&zp->z_lock); 1185168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1186243520Savg 1187243520Savg if (err == 0) { 1188243520Savg locked = VOP_ISLOCKED(vp); 1189243520Savg VI_LOCK(vp); 1190243520Savg if ((vp->v_iflag & VI_DOOMED) != 0 && 1191243520Savg locked != LK_EXCLUSIVE) { 1192243520Savg /* 1193243520Savg * The vnode is doomed and this thread doesn't 1194243520Savg * hold the exclusive lock on it, so the vnode 1195243520Savg * must be being reclaimed by another thread. 1196243520Savg * Otherwise the doomed vnode is being reclaimed 1197243520Savg * by this thread and zfs_zget is called from 1198243520Savg * ZIL internals. 1199243520Savg */ 1200243520Savg VI_UNLOCK(vp); 1201243520Savg VN_RELE(vp); 1202243520Savg goto again; 1203243520Savg } 1204243520Savg VI_UNLOCK(vp); 1205243520Savg } 1206241628Savg getnewvnode_drop_reserve(); 1207185029Spjd return (err); 1208168404Spjd } 1209168404Spjd 1210168404Spjd /* 1211168404Spjd * Not found create new znode/vnode 1212207334Spjd * but only if file exists. 1213207334Spjd * 1214207334Spjd * There is a small window where zfs_vget() could 1215207334Spjd * find this object while a file create is still in 1216219089Spjd * progress. This is checked for in zfs_znode_alloc() 1217219089Spjd * 1218219089Spjd * if zfs_znode_alloc() fails it will drop the hold on the 1219219089Spjd * bonus buffer. 1220168404Spjd */ 1221219089Spjd zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, 1222219089Spjd doi.doi_bonus_type, NULL); 1223219089Spjd if (zp == NULL) { 1224249195Smm err = SET_ERROR(ENOENT); 1225219089Spjd } else { 1226219089Spjd *zpp = zp; 1227219089Spjd } 1228219089Spjd if (err == 0) { 1229219089Spjd vnode_t *vp = ZTOV(zp); 1230185029Spjd 1231207334Spjd err = insmntque(vp, zfsvfs->z_vfs); 1232269494Skib if (err == 0) { 1233269494Skib vp->v_hash = obj_num; 1234219089Spjd VOP_UNLOCK(vp, 0); 1235269494Skib } else { 1236219089Spjd zp->z_vnode = NULL; 1237219089Spjd zfs_znode_dmu_fini(zp); 1238219089Spjd zfs_znode_free(zp); 1239219089Spjd *zpp = NULL; 1240219089Spjd } 1241207334Spjd } 1242168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1243241628Savg getnewvnode_drop_reserve(); 1244207334Spjd return (err); 1245168404Spjd} 1246168404Spjd 1247185029Spjdint 1248185029Spjdzfs_rezget(znode_t *zp) 1249185029Spjd{ 1250185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1251185029Spjd dmu_object_info_t doi; 1252185029Spjd dmu_buf_t *db; 1253225166Smm vnode_t *vp; 1254185029Spjd uint64_t obj_num = zp->z_id; 1255219089Spjd uint64_t mode, size; 1256219089Spjd sa_bulk_attr_t bulk[8]; 1257185029Spjd int err; 1258219089Spjd int count = 0; 1259219089Spjd uint64_t gen; 1260185029Spjd 1261185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1262185029Spjd 1263219089Spjd mutex_enter(&zp->z_acl_lock); 1264219089Spjd if (zp->z_acl_cached) { 1265219089Spjd zfs_acl_free(zp->z_acl_cached); 1266219089Spjd zp->z_acl_cached = NULL; 1267219089Spjd } 1268219089Spjd 1269219089Spjd mutex_exit(&zp->z_acl_lock); 1270219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1271219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1272185029Spjd if (err) { 1273185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1274185029Spjd return (err); 1275185029Spjd } 1276185029Spjd 1277185029Spjd dmu_object_info_from_db(db, &doi); 1278219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1279219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1280219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1281219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1282219089Spjd sa_buf_rele(db, NULL); 1283185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1284249195Smm return (SET_ERROR(EINVAL)); 1285185029Spjd } 1286185029Spjd 1287219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); 1288219089Spjd size = zp->z_size; 1289219089Spjd 1290219089Spjd /* reload cached values */ 1291219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, 1292219089Spjd &gen, sizeof (gen)); 1293219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 1294219089Spjd &zp->z_size, sizeof (zp->z_size)); 1295219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 1296219089Spjd &zp->z_links, sizeof (zp->z_links)); 1297219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 1298219089Spjd &zp->z_pflags, sizeof (zp->z_pflags)); 1299219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 1300219089Spjd &zp->z_atime, sizeof (zp->z_atime)); 1301219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 1302219089Spjd &zp->z_uid, sizeof (zp->z_uid)); 1303219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 1304219089Spjd &zp->z_gid, sizeof (zp->z_gid)); 1305219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, 1306219089Spjd &mode, sizeof (mode)); 1307219089Spjd 1308219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { 1309219089Spjd zfs_znode_dmu_fini(zp); 1310185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1311249195Smm return (SET_ERROR(EIO)); 1312185029Spjd } 1313185029Spjd 1314219089Spjd zp->z_mode = mode; 1315219089Spjd 1316219089Spjd if (gen != zp->z_gen) { 1317219089Spjd zfs_znode_dmu_fini(zp); 1318219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1319249195Smm return (SET_ERROR(EIO)); 1320211932Smm } 1321211932Smm 1322219089Spjd /* 1323282764Savg * It is highly improbable but still quite possible that two 1324282764Savg * objects in different datasets are created with the same 1325282764Savg * object numbers and in transaction groups with the same 1326282764Savg * numbers. znodes corresponding to those objects would 1327282764Savg * have the same z_id and z_gen, but their other attributes 1328282764Savg * may be different. 1329282764Savg * zfs recv -F may replace one of such objects with the other. 1330282764Savg * As a result file properties recorded in the replaced 1331282764Savg * object's vnode may no longer match the received object's 1332282764Savg * properties. At present the only cached property is the 1333282764Savg * files type recorded in v_type. 1334282764Savg * So, handle this case by leaving the old vnode and znode 1335282764Savg * disassociated from the actual object. A new vnode and a 1336282764Savg * znode will be created if the object is accessed 1337282764Savg * (e.g. via a look-up). The old vnode and znode will be 1338282764Savg * recycled when the last vnode reference is dropped. 1339219089Spjd */ 1340225166Smm vp = ZTOV(zp); 1341282764Savg if (vp != NULL && vp->v_type != IFTOVT((mode_t)zp->z_mode)) { 1342219089Spjd zfs_znode_dmu_fini(zp); 1343219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1344219089Spjd return (EIO); 1345219089Spjd } 1346219089Spjd 1347219089Spjd zp->z_unlinked = (zp->z_links == 0); 1348185029Spjd zp->z_blksz = doi.doi_data_block_size; 1349225166Smm if (vp != NULL) { 1350225166Smm vn_pages_remove(vp, 0, 0); 1351225166Smm if (zp->z_size != size) 1352225166Smm vnode_pager_setsize(vp, zp->z_size); 1353225166Smm } 1354185029Spjd 1355185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1356185029Spjd 1357185029Spjd return (0); 1358185029Spjd} 1359185029Spjd 1360168404Spjdvoid 1361168404Spjdzfs_znode_delete(znode_t *zp, dmu_tx_t *tx) 1362168404Spjd{ 1363168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1364185029Spjd objset_t *os = zfsvfs->z_os; 1365185029Spjd uint64_t obj = zp->z_id; 1366219089Spjd uint64_t acl_obj = zfs_external_acl(zp); 1367168404Spjd 1368185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 1369219089Spjd if (acl_obj) { 1370219089Spjd VERIFY(!zp->z_is_sa); 1371185029Spjd VERIFY(0 == dmu_object_free(os, acl_obj, tx)); 1372219089Spjd } 1373185029Spjd VERIFY(0 == dmu_object_free(os, obj, tx)); 1374185029Spjd zfs_znode_dmu_fini(zp); 1375185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1376185029Spjd zfs_znode_free(zp); 1377168404Spjd} 1378168404Spjd 1379168404Spjdvoid 1380168404Spjdzfs_zinactive(znode_t *zp) 1381168404Spjd{ 1382168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1383168404Spjd uint64_t z_id = zp->z_id; 1384168404Spjd 1385219089Spjd ASSERT(zp->z_sa_hdl); 1386168404Spjd 1387168404Spjd /* 1388168404Spjd * Don't allow a zfs_zget() while were trying to release this znode 1389168404Spjd */ 1390168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id); 1391168404Spjd 1392168404Spjd mutex_enter(&zp->z_lock); 1393168404Spjd 1394168404Spjd /* 1395168404Spjd * If this was the last reference to a file with no links, 1396168404Spjd * remove the file from the file system. 1397168404Spjd */ 1398168404Spjd if (zp->z_unlinked) { 1399168404Spjd mutex_exit(&zp->z_lock); 1400168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1401168404Spjd zfs_rmnode(zp); 1402168404Spjd return; 1403168404Spjd } 1404219089Spjd 1405168404Spjd mutex_exit(&zp->z_lock); 1406243520Savg zfs_znode_dmu_fini(zp); 1407168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1408243520Savg zfs_znode_free(zp); 1409168404Spjd} 1410168404Spjd 1411168404Spjdvoid 1412168404Spjdzfs_znode_free(znode_t *zp) 1413168404Spjd{ 1414168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1415168404Spjd 1416219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1417243520Savg zp->z_vnode = NULL; 1418168404Spjd mutex_enter(&zfsvfs->z_znodes_lock); 1419185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 1420168404Spjd list_remove(&zfsvfs->z_all_znodes, zp); 1421168404Spjd mutex_exit(&zfsvfs->z_znodes_lock); 1422168404Spjd 1423211932Smm if (zp->z_acl_cached) { 1424211932Smm zfs_acl_free(zp->z_acl_cached); 1425211932Smm zp->z_acl_cached = NULL; 1426211932Smm } 1427211932Smm 1428168404Spjd kmem_cache_free(znode_cache, zp); 1429185029Spjd 1430185029Spjd VFS_RELE(zfsvfs->z_vfs); 1431168404Spjd} 1432168404Spjd 1433168404Spjdvoid 1434219089Spjdzfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], 1435219089Spjd uint64_t ctime[2], boolean_t have_tx) 1436168404Spjd{ 1437168404Spjd timestruc_t now; 1438168404Spjd 1439168404Spjd gethrestime(&now); 1440168404Spjd 1441219089Spjd if (have_tx) { /* will sa_bulk_update happen really soon? */ 1442168404Spjd zp->z_atime_dirty = 0; 1443168404Spjd zp->z_seq++; 1444168404Spjd } else { 1445168404Spjd zp->z_atime_dirty = 1; 1446168404Spjd } 1447168404Spjd 1448219089Spjd if (flag & AT_ATIME) { 1449219089Spjd ZFS_TIME_ENCODE(&now, zp->z_atime); 1450219089Spjd } 1451168404Spjd 1452185029Spjd if (flag & AT_MTIME) { 1453219089Spjd ZFS_TIME_ENCODE(&now, mtime); 1454219089Spjd if (zp->z_zfsvfs->z_use_fuids) { 1455219089Spjd zp->z_pflags |= (ZFS_ARCHIVE | 1456219089Spjd ZFS_AV_MODIFIED); 1457219089Spjd } 1458185029Spjd } 1459168404Spjd 1460185029Spjd if (flag & AT_CTIME) { 1461219089Spjd ZFS_TIME_ENCODE(&now, ctime); 1462185029Spjd if (zp->z_zfsvfs->z_use_fuids) 1463219089Spjd zp->z_pflags |= ZFS_ARCHIVE; 1464185029Spjd } 1465168404Spjd} 1466168404Spjd 1467168404Spjd/* 1468168404Spjd * Grow the block size for a file. 1469168404Spjd * 1470168404Spjd * IN: zp - znode of file to free data in. 1471168404Spjd * size - requested block size 1472168404Spjd * tx - open transaction. 1473168404Spjd * 1474168404Spjd * NOTE: this function assumes that the znode is write locked. 1475168404Spjd */ 1476168404Spjdvoid 1477168404Spjdzfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) 1478168404Spjd{ 1479168404Spjd int error; 1480168404Spjd u_longlong_t dummy; 1481168404Spjd 1482168404Spjd if (size <= zp->z_blksz) 1483168404Spjd return; 1484168404Spjd /* 1485168404Spjd * If the file size is already greater than the current blocksize, 1486168404Spjd * we will not grow. If there is more than one block in a file, 1487168404Spjd * the blocksize cannot change. 1488168404Spjd */ 1489219089Spjd if (zp->z_blksz && zp->z_size > zp->z_blksz) 1490168404Spjd return; 1491168404Spjd 1492168404Spjd error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id, 1493168404Spjd size, 0, tx); 1494219089Spjd 1495168404Spjd if (error == ENOTSUP) 1496168404Spjd return; 1497240415Smm ASSERT0(error); 1498168404Spjd 1499168404Spjd /* What blocksize did we actually get? */ 1500219089Spjd dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); 1501168404Spjd} 1502168404Spjd 1503219089Spjd#ifdef sun 1504168404Spjd/* 1505219089Spjd * This is a dummy interface used when pvn_vplist_dirty() should *not* 1506219089Spjd * be calling back into the fs for a putpage(). E.g.: when truncating 1507219089Spjd * a file, the pages being "thrown away* don't need to be written out. 1508219089Spjd */ 1509219089Spjd/* ARGSUSED */ 1510219089Spjdstatic int 1511219089Spjdzfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, 1512219089Spjd int flags, cred_t *cr) 1513219089Spjd{ 1514219089Spjd ASSERT(0); 1515219089Spjd return (0); 1516219089Spjd} 1517219089Spjd#endif /* sun */ 1518219089Spjd 1519219089Spjd/* 1520185029Spjd * Increase the file length 1521168404Spjd * 1522168404Spjd * IN: zp - znode of file to free data in. 1523185029Spjd * end - new end-of-file 1524168404Spjd * 1525269002Sdelphij * RETURN: 0 on success, error code on 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 } 1548168404Spjd tx = dmu_tx_create(zfsvfs->z_os); 1549219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1550219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1551185029Spjd if (end > zp->z_blksz && 1552168404Spjd (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { 1553168404Spjd /* 1554168404Spjd * We are growing the file past the current block size. 1555168404Spjd */ 1556168404Spjd if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) { 1557276081Sdelphij /* 1558276081Sdelphij * File's blocksize is already larger than the 1559276081Sdelphij * "recordsize" property. Only let it grow to 1560276081Sdelphij * the next power of 2. 1561276081Sdelphij */ 1562168404Spjd ASSERT(!ISP2(zp->z_blksz)); 1563276081Sdelphij newblksz = MIN(end, 1 << highbit64(zp->z_blksz)); 1564168404Spjd } else { 1565185029Spjd newblksz = MIN(end, zp->z_zfsvfs->z_max_blksz); 1566168404Spjd } 1567185029Spjd dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); 1568185029Spjd } else { 1569185029Spjd newblksz = 0; 1570168404Spjd } 1571168404Spjd 1572260776Savg error = dmu_tx_assign(tx, TXG_WAIT); 1573168404Spjd if (error) { 1574168404Spjd dmu_tx_abort(tx); 1575168404Spjd zfs_range_unlock(rl); 1576168404Spjd return (error); 1577168404Spjd } 1578168404Spjd 1579185029Spjd if (newblksz) 1580185029Spjd zfs_grow_blocksize(zp, newblksz, tx); 1581168404Spjd 1582219089Spjd zp->z_size = end; 1583168404Spjd 1584219089Spjd VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), 1585219089Spjd &zp->z_size, sizeof (zp->z_size), tx)); 1586219089Spjd 1587219089Spjd vnode_pager_setsize(ZTOV(zp), end); 1588219089Spjd 1589185029Spjd zfs_range_unlock(rl); 1590168404Spjd 1591185029Spjd dmu_tx_commit(tx); 1592185029Spjd 1593185029Spjd return (0); 1594185029Spjd} 1595185029Spjd 1596185029Spjd/* 1597185029Spjd * Free space in a file. 1598185029Spjd * 1599185029Spjd * IN: zp - znode of file to free data in. 1600185029Spjd * off - start of section to free. 1601185029Spjd * len - length of section to free. 1602185029Spjd * 1603269002Sdelphij * RETURN: 0 on success, error code on failure 1604185029Spjd */ 1605185029Spjdstatic int 1606185029Spjdzfs_free_range(znode_t *zp, uint64_t off, uint64_t len) 1607185029Spjd{ 1608185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1609185029Spjd rl_t *rl; 1610185029Spjd int error; 1611185029Spjd 1612185029Spjd /* 1613185029Spjd * Lock the range being freed. 1614185029Spjd */ 1615185029Spjd rl = zfs_range_lock(zp, off, len, RL_WRITER); 1616185029Spjd 1617185029Spjd /* 1618185029Spjd * Nothing to do if file already at desired length. 1619185029Spjd */ 1620219089Spjd if (off >= zp->z_size) { 1621185029Spjd zfs_range_unlock(rl); 1622185029Spjd return (0); 1623168404Spjd } 1624168404Spjd 1625219089Spjd if (off + len > zp->z_size) 1626219089Spjd len = zp->z_size - off; 1627185029Spjd 1628185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); 1629185029Spjd 1630185029Spjd if (error == 0) { 1631185029Spjd /* 1632185029Spjd * In FreeBSD we cannot free block in the middle of a file, 1633219089Spjd * but only at the end of a file, so this code path should 1634219089Spjd * never happen. 1635185029Spjd */ 1636185029Spjd vnode_pager_setsize(ZTOV(zp), off); 1637168404Spjd } 1638168404Spjd 1639168404Spjd zfs_range_unlock(rl); 1640168404Spjd 1641185029Spjd return (error); 1642185029Spjd} 1643185029Spjd 1644185029Spjd/* 1645185029Spjd * Truncate a file 1646185029Spjd * 1647185029Spjd * IN: zp - znode of file to free data in. 1648185029Spjd * end - new end-of-file. 1649185029Spjd * 1650269002Sdelphij * RETURN: 0 on success, error code on failure 1651185029Spjd */ 1652185029Spjdstatic int 1653185029Spjdzfs_trunc(znode_t *zp, uint64_t end) 1654185029Spjd{ 1655185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1656185029Spjd vnode_t *vp = ZTOV(zp); 1657185029Spjd dmu_tx_t *tx; 1658185029Spjd rl_t *rl; 1659185029Spjd int error; 1660219089Spjd sa_bulk_attr_t bulk[2]; 1661219089Spjd int count = 0; 1662185029Spjd 1663185029Spjd /* 1664185029Spjd * We will change zp_size, lock the whole file. 1665185029Spjd */ 1666185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1667185029Spjd 1668185029Spjd /* 1669185029Spjd * Nothing to do if file already at desired length. 1670185029Spjd */ 1671219089Spjd if (end >= zp->z_size) { 1672185029Spjd zfs_range_unlock(rl); 1673185029Spjd return (0); 1674185029Spjd } 1675185029Spjd 1676185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1); 1677185029Spjd if (error) { 1678185029Spjd zfs_range_unlock(rl); 1679185029Spjd return (error); 1680185029Spjd } 1681185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1682219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1683219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1684269002Sdelphij dmu_tx_mark_netfree(tx); 1685260776Savg error = dmu_tx_assign(tx, TXG_WAIT); 1686185029Spjd if (error) { 1687185029Spjd dmu_tx_abort(tx); 1688185029Spjd zfs_range_unlock(rl); 1689185029Spjd return (error); 1690185029Spjd } 1691185029Spjd 1692219089Spjd zp->z_size = end; 1693219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), 1694219089Spjd NULL, &zp->z_size, sizeof (zp->z_size)); 1695185029Spjd 1696219089Spjd if (end == 0) { 1697219089Spjd zp->z_pflags &= ~ZFS_SPARSE; 1698219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1699219089Spjd NULL, &zp->z_pflags, 8); 1700219089Spjd } 1701219089Spjd VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); 1702219089Spjd 1703168404Spjd dmu_tx_commit(tx); 1704168404Spjd 1705168404Spjd /* 1706168404Spjd * Clear any mapped pages in the truncated region. This has to 1707168404Spjd * happen outside of the transaction to avoid the possibility of 1708168404Spjd * a deadlock with someone trying to push a page that we are 1709168404Spjd * about to invalidate. 1710168404Spjd */ 1711185029Spjd vnode_pager_setsize(vp, end); 1712168404Spjd 1713209962Smm zfs_range_unlock(rl); 1714209962Smm 1715168404Spjd return (0); 1716168404Spjd} 1717168404Spjd 1718185029Spjd/* 1719185029Spjd * Free space in a file 1720185029Spjd * 1721185029Spjd * IN: zp - znode of file to free data in. 1722185029Spjd * off - start of range 1723185029Spjd * len - end of range (0 => EOF) 1724185029Spjd * flag - current file open mode flags. 1725185029Spjd * log - TRUE if this action should be logged 1726185029Spjd * 1727269002Sdelphij * RETURN: 0 on success, error code on failure 1728185029Spjd */ 1729185029Spjdint 1730185029Spjdzfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) 1731185029Spjd{ 1732185029Spjd vnode_t *vp = ZTOV(zp); 1733185029Spjd dmu_tx_t *tx; 1734185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1735185029Spjd zilog_t *zilog = zfsvfs->z_log; 1736219089Spjd uint64_t mode; 1737219089Spjd uint64_t mtime[2], ctime[2]; 1738219089Spjd sa_bulk_attr_t bulk[3]; 1739219089Spjd int count = 0; 1740185029Spjd int error; 1741185029Spjd 1742219089Spjd if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, 1743219089Spjd sizeof (mode))) != 0) 1744219089Spjd return (error); 1745219089Spjd 1746219089Spjd if (off > zp->z_size) { 1747185029Spjd error = zfs_extend(zp, off+len); 1748185029Spjd if (error == 0 && log) 1749185029Spjd goto log; 1750185029Spjd else 1751185029Spjd return (error); 1752185029Spjd } 1753185029Spjd 1754219089Spjd /* 1755219089Spjd * Check for any locks in the region to be freed. 1756219089Spjd */ 1757219089Spjd 1758219089Spjd if (MANDLOCK(vp, (mode_t)mode)) { 1759219089Spjd uint64_t length = (len ? len : zp->z_size - off); 1760219089Spjd if (error = chklock(vp, FWRITE, off, length, flag, NULL)) 1761219089Spjd return (error); 1762219089Spjd } 1763219089Spjd 1764185029Spjd if (len == 0) { 1765185029Spjd error = zfs_trunc(zp, off); 1766185029Spjd } else { 1767185029Spjd if ((error = zfs_free_range(zp, off, len)) == 0 && 1768219089Spjd off + len > zp->z_size) 1769185029Spjd error = zfs_extend(zp, off+len); 1770185029Spjd } 1771185029Spjd if (error || !log) 1772185029Spjd return (error); 1773185029Spjdlog: 1774185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1775219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1776219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1777260776Savg error = dmu_tx_assign(tx, TXG_WAIT); 1778185029Spjd if (error) { 1779185029Spjd dmu_tx_abort(tx); 1780185029Spjd return (error); 1781185029Spjd } 1782185029Spjd 1783219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); 1784219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); 1785219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1786219089Spjd NULL, &zp->z_pflags, 8); 1787219089Spjd zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); 1788219089Spjd error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); 1789219089Spjd ASSERT(error == 0); 1790219089Spjd 1791185029Spjd zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); 1792185029Spjd 1793185029Spjd dmu_tx_commit(tx); 1794185029Spjd return (0); 1795185029Spjd} 1796185029Spjd 1797168404Spjdvoid 1798185029Spjdzfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) 1799168404Spjd{ 1800219089Spjd uint64_t moid, obj, sa_obj, version; 1801185029Spjd uint64_t sense = ZFS_CASE_SENSITIVE; 1802185029Spjd uint64_t norm = 0; 1803185029Spjd nvpair_t *elem; 1804168404Spjd int error; 1805207334Spjd int i; 1806168404Spjd znode_t *rootzp = NULL; 1807284760Savg zfsvfs_t *zfsvfs; 1808168404Spjd vattr_t vattr; 1809185029Spjd znode_t *zp; 1810209962Smm zfs_acl_ids_t acl_ids; 1811168404Spjd 1812168404Spjd /* 1813168404Spjd * First attempt to create master node. 1814168404Spjd */ 1815168404Spjd /* 1816168404Spjd * In an empty objset, there are no blocks to read and thus 1817168404Spjd * there can be no i/o errors (which we assert below). 1818168404Spjd */ 1819168404Spjd moid = MASTER_NODE_OBJ; 1820168404Spjd error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, 1821168404Spjd DMU_OT_NONE, 0, tx); 1822168404Spjd ASSERT(error == 0); 1823168404Spjd 1824168404Spjd /* 1825168404Spjd * Set starting attributes. 1826168404Spjd */ 1827219089Spjd version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); 1828185029Spjd elem = NULL; 1829185029Spjd while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { 1830185029Spjd /* For the moment we expect all zpl props to be uint64_ts */ 1831185029Spjd uint64_t val; 1832185029Spjd char *name; 1833168404Spjd 1834185029Spjd ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); 1835185029Spjd VERIFY(nvpair_value_uint64(elem, &val) == 0); 1836185029Spjd name = nvpair_name(elem); 1837185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { 1838209962Smm if (val < version) 1839209962Smm version = val; 1840185029Spjd } else { 1841185029Spjd error = zap_update(os, moid, name, 8, 1, &val, tx); 1842185029Spjd } 1843185029Spjd ASSERT(error == 0); 1844185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) 1845185029Spjd norm = val; 1846185029Spjd else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) 1847185029Spjd sense = val; 1848185029Spjd } 1849185029Spjd ASSERT(version != 0); 1850209962Smm error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); 1851168404Spjd 1852168404Spjd /* 1853219089Spjd * Create zap object used for SA attribute registration 1854219089Spjd */ 1855219089Spjd 1856219089Spjd if (version >= ZPL_VERSION_SA) { 1857219089Spjd sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, 1858219089Spjd DMU_OT_NONE, 0, tx); 1859219089Spjd error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); 1860219089Spjd ASSERT(error == 0); 1861219089Spjd } else { 1862219089Spjd sa_obj = 0; 1863219089Spjd } 1864219089Spjd /* 1865168404Spjd * Create a delete queue. 1866168404Spjd */ 1867209962Smm obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); 1868168404Spjd 1869209962Smm error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); 1870168404Spjd ASSERT(error == 0); 1871168404Spjd 1872168404Spjd /* 1873168404Spjd * Create root znode. Create minimal znode/vnode/zfsvfs 1874168404Spjd * to allow zfs_mknode to work. 1875168404Spjd */ 1876185029Spjd VATTR_NULL(&vattr); 1877168404Spjd vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 1878168404Spjd vattr.va_type = VDIR; 1879168404Spjd vattr.va_mode = S_IFDIR|0755; 1880185029Spjd vattr.va_uid = crgetuid(cr); 1881185029Spjd vattr.va_gid = crgetgid(cr); 1882168404Spjd 1883284760Savg zfsvfs = kmem_zalloc(sizeof (zfsvfs_t), KM_SLEEP); 1884219089Spjd 1885168404Spjd rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); 1886219089Spjd ASSERT(!POINTER_IS_VALID(rootzp->z_zfsvfs)); 1887219089Spjd rootzp->z_moved = 0; 1888168404Spjd rootzp->z_unlinked = 0; 1889168404Spjd rootzp->z_atime_dirty = 0; 1890219089Spjd rootzp->z_is_sa = USE_SA(version, os); 1891168404Spjd 1892284760Savg zfsvfs->z_os = os; 1893284760Savg zfsvfs->z_parent = zfsvfs; 1894284760Savg zfsvfs->z_version = version; 1895284760Savg zfsvfs->z_use_fuids = USE_FUIDS(version, os); 1896284760Savg zfsvfs->z_use_sa = USE_SA(version, os); 1897284760Savg zfsvfs->z_norm = norm; 1898219089Spjd 1899219089Spjd error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, 1900284760Savg &zfsvfs->z_attr_table); 1901219089Spjd 1902219089Spjd ASSERT(error == 0); 1903219089Spjd 1904185029Spjd /* 1905185029Spjd * Fold case on file systems that are always or sometimes case 1906185029Spjd * insensitive. 1907185029Spjd */ 1908185029Spjd if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) 1909284760Savg zfsvfs->z_norm |= U8_TEXTPREP_TOUPPER; 1910168404Spjd 1911284760Savg mutex_init(&zfsvfs->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); 1912284760Savg list_create(&zfsvfs->z_all_znodes, sizeof (znode_t), 1913168404Spjd offsetof(znode_t, z_link_node)); 1914168404Spjd 1915207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1916284760Savg mutex_init(&zfsvfs->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); 1917207334Spjd 1918284760Savg rootzp->z_zfsvfs = zfsvfs; 1919209962Smm VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, 1920209962Smm cr, NULL, &acl_ids)); 1921219089Spjd zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); 1922185029Spjd ASSERT3P(zp, ==, rootzp); 1923185029Spjd error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); 1924168404Spjd ASSERT(error == 0); 1925209962Smm zfs_acl_ids_free(&acl_ids); 1926185029Spjd POINTER_INVALIDATE(&rootzp->z_zfsvfs); 1927168404Spjd 1928219089Spjd sa_handle_destroy(rootzp->z_sa_hdl); 1929209962Smm kmem_cache_free(znode_cache, rootzp); 1930209962Smm 1931209962Smm /* 1932209962Smm * Create shares directory 1933209962Smm */ 1934209962Smm 1935284760Savg error = zfs_create_share_dir(zfsvfs, tx); 1936209962Smm 1937209962Smm ASSERT(error == 0); 1938209962Smm 1939207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1940284760Savg mutex_destroy(&zfsvfs->z_hold_mtx[i]); 1941284760Savg kmem_free(zfsvfs, sizeof (zfsvfs_t)); 1942168404Spjd} 1943185029Spjd 1944168404Spjd#endif /* _KERNEL */ 1945219089Spjd 1946168404Spjdstatic int 1947219089Spjdzfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) 1948168404Spjd{ 1949219089Spjd uint64_t sa_obj = 0; 1950219089Spjd int error; 1951219089Spjd 1952219089Spjd error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); 1953219089Spjd if (error != 0 && error != ENOENT) 1954219089Spjd return (error); 1955219089Spjd 1956219089Spjd error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); 1957219089Spjd return (error); 1958219089Spjd} 1959219089Spjd 1960219089Spjdstatic int 1961219089Spjdzfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, 1962219089Spjd dmu_buf_t **db, void *tag) 1963219089Spjd{ 1964168404Spjd dmu_object_info_t doi; 1965168404Spjd int error; 1966168404Spjd 1967219089Spjd if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) 1968168404Spjd return (error); 1969168404Spjd 1970219089Spjd dmu_object_info_from_db(*db, &doi); 1971219089Spjd if ((doi.doi_bonus_type != DMU_OT_SA && 1972219089Spjd doi.doi_bonus_type != DMU_OT_ZNODE) || 1973219089Spjd doi.doi_bonus_type == DMU_OT_ZNODE && 1974168404Spjd doi.doi_bonus_size < sizeof (znode_phys_t)) { 1975219089Spjd sa_buf_rele(*db, tag); 1976249195Smm return (SET_ERROR(ENOTSUP)); 1977168404Spjd } 1978168404Spjd 1979219089Spjd error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); 1980219089Spjd if (error != 0) { 1981219089Spjd sa_buf_rele(*db, tag); 1982219089Spjd return (error); 1983219089Spjd } 1984168404Spjd 1985168404Spjd return (0); 1986168404Spjd} 1987168404Spjd 1988219089Spjdvoid 1989219089Spjdzfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) 1990168404Spjd{ 1991219089Spjd sa_handle_destroy(hdl); 1992219089Spjd sa_buf_rele(db, tag); 1993219089Spjd} 1994219089Spjd 1995219089Spjd/* 1996219089Spjd * Given an object number, return its parent object number and whether 1997219089Spjd * or not the object is an extended attribute directory. 1998219089Spjd */ 1999219089Spjdstatic int 2000240955Smmzfs_obj_to_pobj(objset_t *osp, sa_handle_t *hdl, sa_attr_type_t *sa_table, 2001240955Smm uint64_t *pobjp, int *is_xattrdir) 2002219089Spjd{ 2003219089Spjd uint64_t parent; 2004219089Spjd uint64_t pflags; 2005219089Spjd uint64_t mode; 2006240955Smm uint64_t parent_mode; 2007219089Spjd sa_bulk_attr_t bulk[3]; 2008240955Smm sa_handle_t *sa_hdl; 2009240955Smm dmu_buf_t *sa_db; 2010219089Spjd int count = 0; 2011219089Spjd int error; 2012219089Spjd 2013219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, 2014219089Spjd &parent, sizeof (parent)); 2015219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, 2016219089Spjd &pflags, sizeof (pflags)); 2017219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2018219089Spjd &mode, sizeof (mode)); 2019219089Spjd 2020219089Spjd if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) 2021219089Spjd return (error); 2022219089Spjd 2023240955Smm /* 2024240955Smm * When a link is removed its parent pointer is not changed and will 2025240955Smm * be invalid. There are two cases where a link is removed but the 2026240955Smm * file stays around, when it goes to the delete queue and when there 2027240955Smm * are additional links. 2028240955Smm */ 2029240955Smm error = zfs_grab_sa_handle(osp, parent, &sa_hdl, &sa_db, FTAG); 2030240955Smm if (error != 0) 2031240955Smm return (error); 2032240955Smm 2033240955Smm error = sa_lookup(sa_hdl, ZPL_MODE, &parent_mode, sizeof (parent_mode)); 2034240955Smm zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2035240955Smm if (error != 0) 2036240955Smm return (error); 2037240955Smm 2038219089Spjd *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); 2039219089Spjd 2040240955Smm /* 2041240955Smm * Extended attributes can be applied to files, directories, etc. 2042240955Smm * Otherwise the parent must be a directory. 2043240955Smm */ 2044240955Smm if (!*is_xattrdir && !S_ISDIR(parent_mode)) 2045249195Smm return (SET_ERROR(EINVAL)); 2046240955Smm 2047240955Smm *pobjp = parent; 2048240955Smm 2049219089Spjd return (0); 2050219089Spjd} 2051219089Spjd 2052219089Spjd/* 2053219089Spjd * Given an object number, return some zpl level statistics 2054219089Spjd */ 2055219089Spjdstatic int 2056219089Spjdzfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, 2057219089Spjd zfs_stat_t *sb) 2058219089Spjd{ 2059219089Spjd sa_bulk_attr_t bulk[4]; 2060219089Spjd int count = 0; 2061219089Spjd 2062219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2063219089Spjd &sb->zs_mode, sizeof (sb->zs_mode)); 2064219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, 2065219089Spjd &sb->zs_gen, sizeof (sb->zs_gen)); 2066219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, 2067219089Spjd &sb->zs_links, sizeof (sb->zs_links)); 2068219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, 2069219089Spjd &sb->zs_ctime, sizeof (sb->zs_ctime)); 2070219089Spjd 2071219089Spjd return (sa_bulk_lookup(hdl, bulk, count)); 2072219089Spjd} 2073219089Spjd 2074219089Spjdstatic int 2075219089Spjdzfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, 2076219089Spjd sa_attr_type_t *sa_table, char *buf, int len) 2077219089Spjd{ 2078219089Spjd sa_handle_t *sa_hdl; 2079219089Spjd sa_handle_t *prevhdl = NULL; 2080219089Spjd dmu_buf_t *prevdb = NULL; 2081219089Spjd dmu_buf_t *sa_db = NULL; 2082168404Spjd char *path = buf + len - 1; 2083168404Spjd int error; 2084168404Spjd 2085168404Spjd *path = '\0'; 2086219089Spjd sa_hdl = hdl; 2087168404Spjd 2088168404Spjd for (;;) { 2089168404Spjd uint64_t pobj; 2090168404Spjd char component[MAXNAMELEN + 2]; 2091168404Spjd size_t complen; 2092168404Spjd int is_xattrdir; 2093168404Spjd 2094219089Spjd if (prevdb) 2095219089Spjd zfs_release_sa_handle(prevhdl, prevdb, FTAG); 2096219089Spjd 2097240955Smm if ((error = zfs_obj_to_pobj(osp, sa_hdl, sa_table, &pobj, 2098168404Spjd &is_xattrdir)) != 0) 2099168404Spjd break; 2100168404Spjd 2101168404Spjd if (pobj == obj) { 2102168404Spjd if (path[0] != '/') 2103168404Spjd *--path = '/'; 2104168404Spjd break; 2105168404Spjd } 2106168404Spjd 2107168404Spjd component[0] = '/'; 2108168404Spjd if (is_xattrdir) { 2109168404Spjd (void) sprintf(component + 1, "<xattrdir>"); 2110168404Spjd } else { 2111185029Spjd error = zap_value_search(osp, pobj, obj, 2112185029Spjd ZFS_DIRENT_OBJ(-1ULL), component + 1); 2113168404Spjd if (error != 0) 2114168404Spjd break; 2115168404Spjd } 2116168404Spjd 2117168404Spjd complen = strlen(component); 2118168404Spjd path -= complen; 2119168404Spjd ASSERT(path >= buf); 2120168404Spjd bcopy(component, path, complen); 2121168404Spjd obj = pobj; 2122219089Spjd 2123219089Spjd if (sa_hdl != hdl) { 2124219089Spjd prevhdl = sa_hdl; 2125219089Spjd prevdb = sa_db; 2126219089Spjd } 2127219089Spjd error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); 2128219089Spjd if (error != 0) { 2129219089Spjd sa_hdl = prevhdl; 2130219089Spjd sa_db = prevdb; 2131219089Spjd break; 2132219089Spjd } 2133168404Spjd } 2134168404Spjd 2135219089Spjd if (sa_hdl != NULL && sa_hdl != hdl) { 2136219089Spjd ASSERT(sa_db != NULL); 2137219089Spjd zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2138219089Spjd } 2139219089Spjd 2140168404Spjd if (error == 0) 2141168404Spjd (void) memmove(buf, path, buf + len - path); 2142219089Spjd 2143168404Spjd return (error); 2144168404Spjd} 2145219089Spjd 2146219089Spjdint 2147219089Spjdzfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) 2148219089Spjd{ 2149219089Spjd sa_attr_type_t *sa_table; 2150219089Spjd sa_handle_t *hdl; 2151219089Spjd dmu_buf_t *db; 2152219089Spjd int error; 2153219089Spjd 2154219089Spjd error = zfs_sa_setup(osp, &sa_table); 2155219089Spjd if (error != 0) 2156219089Spjd return (error); 2157219089Spjd 2158219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2159219089Spjd if (error != 0) 2160219089Spjd return (error); 2161219089Spjd 2162219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2163219089Spjd 2164219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2165219089Spjd return (error); 2166219089Spjd} 2167219089Spjd 2168219089Spjdint 2169219089Spjdzfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, 2170219089Spjd char *buf, int len) 2171219089Spjd{ 2172219089Spjd char *path = buf + len - 1; 2173219089Spjd sa_attr_type_t *sa_table; 2174219089Spjd sa_handle_t *hdl; 2175219089Spjd dmu_buf_t *db; 2176219089Spjd int error; 2177219089Spjd 2178219089Spjd *path = '\0'; 2179219089Spjd 2180219089Spjd error = zfs_sa_setup(osp, &sa_table); 2181219089Spjd if (error != 0) 2182219089Spjd return (error); 2183219089Spjd 2184219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2185219089Spjd if (error != 0) 2186219089Spjd return (error); 2187219089Spjd 2188219089Spjd error = zfs_obj_to_stats_impl(hdl, sa_table, sb); 2189219089Spjd if (error != 0) { 2190219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2191219089Spjd return (error); 2192219089Spjd } 2193219089Spjd 2194219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2195219089Spjd 2196219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2197219089Spjd return (error); 2198219089Spjd} 2199