zfs_znode.c revision 225166
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 630225153Spjdstatic void 631225153Spjdzfs_vnode_forget(vnode_t *vp) 632225153Spjd{ 633225153Spjd 634225153Spjd VOP_UNLOCK(vp, 0); 635225153Spjd VI_LOCK(vp); 636225153Spjd vp->v_usecount--; 637225153Spjd vp->v_iflag |= VI_DOOMED; 638225153Spjd vp->v_data = NULL; 639225153Spjd vdropl(vp); 640225153Spjd} 641225153Spjd 642168404Spjd/* 643168404Spjd * Construct a new znode/vnode and intialize. 644168404Spjd * 645168404Spjd * This does not do a call to dmu_set_user() that is 646168404Spjd * up to the caller to do, in case you don't want to 647168404Spjd * return the znode 648168404Spjd */ 649168404Spjdstatic znode_t * 650219089Spjdzfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, int blksz, 651219089Spjd dmu_object_type_t obj_type, sa_handle_t *hdl) 652168404Spjd{ 653168404Spjd znode_t *zp; 654168404Spjd vnode_t *vp; 655219089Spjd uint64_t mode; 656219089Spjd uint64_t parent; 657219089Spjd sa_bulk_attr_t bulk[9]; 658219089Spjd int count = 0; 659168404Spjd 660168404Spjd zp = kmem_cache_alloc(znode_cache, KM_SLEEP); 661185029Spjd zfs_znode_cache_constructor(zp, zfsvfs->z_parent->z_vfs, 0); 662168404Spjd 663168404Spjd ASSERT(zp->z_dirlocks == NULL); 664185029Spjd ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); 665219089Spjd zp->z_moved = 0; 666168404Spjd 667185029Spjd /* 668185029Spjd * Defer setting z_zfsvfs until the znode is ready to be a candidate for 669185029Spjd * the zfs_znode_move() callback. 670185029Spjd */ 671219089Spjd zp->z_sa_hdl = NULL; 672168404Spjd zp->z_unlinked = 0; 673168404Spjd zp->z_atime_dirty = 0; 674168404Spjd zp->z_mapcnt = 0; 675185029Spjd zp->z_id = db->db_object; 676168404Spjd zp->z_blksz = blksz; 677168404Spjd zp->z_seq = 0x7A4653; 678168404Spjd zp->z_sync_cnt = 0; 679168404Spjd 680185029Spjd vp = ZTOV(zp); 681168404Spjd 682219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl); 683185029Spjd 684219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); 685219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, &zp->z_gen, 8); 686219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 687219089Spjd &zp->z_size, 8); 688219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 689219089Spjd &zp->z_links, 8); 690219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 691219089Spjd &zp->z_pflags, 8); 692219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); 693219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 694219089Spjd &zp->z_atime, 16); 695219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 696219089Spjd &zp->z_uid, 8); 697219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 698219089Spjd &zp->z_gid, 8); 699185029Spjd 700219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { 701219089Spjd if (hdl == NULL) 702219089Spjd sa_handle_destroy(zp->z_sa_hdl); 703225153Spjd zfs_vnode_forget(vp); 704225153Spjd zp->z_vnode = NULL; 705219089Spjd kmem_cache_free(znode_cache, zp); 706219089Spjd return (NULL); 707219089Spjd } 708168404Spjd 709219089Spjd zp->z_mode = mode; 710219089Spjd 711219089Spjd vp->v_type = IFTOVT((mode_t)mode); 712219089Spjd 713168404Spjd switch (vp->v_type) { 714168404Spjd case VDIR: 715168404Spjd zp->z_zn_prefetch = B_TRUE; /* z_prefetch default is enabled */ 716168404Spjd break; 717224251Sdelphij#ifdef sun 718224231Sdelphij case VBLK: 719224231Sdelphij case VCHR: 720224231Sdelphij { 721224231Sdelphij uint64_t rdev; 722224231Sdelphij VERIFY(sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zfsvfs), 723224231Sdelphij &rdev, sizeof (rdev)) == 0); 724224231Sdelphij 725224251Sdelphij vp->v_rdev = zfs_cmpldev(rdev); 726224231Sdelphij } 727224231Sdelphij break; 728224251Sdelphij#endif /* sun */ 729168404Spjd case VFIFO: 730224252Sdelphij#ifdef sun 731224252Sdelphij case VSOCK: 732224252Sdelphij case VDOOR: 733224252Sdelphij#endif /* sun */ 734168404Spjd vp->v_op = &zfs_fifoops; 735168404Spjd break; 736219089Spjd case VREG: 737219089Spjd if (parent == zfsvfs->z_shares_dir) { 738219089Spjd ASSERT(zp->z_uid == 0 && zp->z_gid == 0); 739209962Smm vp->v_op = &zfs_shareops; 740209962Smm } 741209962Smm break; 742224252Sdelphij#ifdef sun 743224252Sdelphij case VLNK: 744224252Sdelphij vn_setops(vp, zfs_symvnodeops); 745224252Sdelphij break; 746224252Sdelphij default: 747224252Sdelphij vn_setops(vp, zfs_evnodeops); 748224252Sdelphij break; 749224252Sdelphij#endif /* sun */ 750168404Spjd } 751210172Sjhb if (vp->v_type != VFIFO) 752189696Sjhb VN_LOCK_ASHARE(vp); 753168404Spjd 754185029Spjd mutex_enter(&zfsvfs->z_znodes_lock); 755185029Spjd list_insert_tail(&zfsvfs->z_all_znodes, zp); 756185029Spjd membar_producer(); 757168404Spjd /* 758185029Spjd * Everything else must be valid before assigning z_zfsvfs makes the 759185029Spjd * znode eligible for zfs_znode_move(). 760168404Spjd */ 761185029Spjd zp->z_zfsvfs = zfsvfs; 762185029Spjd mutex_exit(&zfsvfs->z_znodes_lock); 763168404Spjd 764168404Spjd VFS_HOLD(zfsvfs->z_vfs); 765185029Spjd return (zp); 766168404Spjd} 767168404Spjd 768219089Spjdstatic uint64_t empty_xattr; 769219089Spjdstatic uint64_t pad[4]; 770219089Spjdstatic zfs_acl_phys_t acl_phys; 771168404Spjd/* 772168404Spjd * Create a new DMU object to hold a zfs znode. 773168404Spjd * 774168404Spjd * IN: dzp - parent directory for new znode 775168404Spjd * vap - file attributes for new znode 776168404Spjd * tx - dmu transaction id for zap operations 777168404Spjd * cr - credentials of caller 778168404Spjd * flag - flags: 779168404Spjd * IS_ROOT_NODE - new object will be root 780168404Spjd * IS_XATTR - new object is an attribute 781185029Spjd * bonuslen - length of bonus buffer 782185029Spjd * setaclp - File/Dir initial ACL 783185029Spjd * fuidp - Tracks fuid allocation. 784168404Spjd * 785185029Spjd * OUT: zpp - allocated znode 786168404Spjd * 787168404Spjd */ 788168404Spjdvoid 789185029Spjdzfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, 790219089Spjd uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) 791168404Spjd{ 792219089Spjd uint64_t crtime[2], atime[2], mtime[2], ctime[2]; 793219089Spjd uint64_t mode, size, links, parent, pflags; 794219089Spjd uint64_t dzp_pflags = 0; 795219089Spjd uint64_t rdev = 0; 796219089Spjd zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 797185029Spjd dmu_buf_t *db; 798168404Spjd timestruc_t now; 799185029Spjd uint64_t gen, obj; 800168404Spjd int err; 801219089Spjd int bonuslen; 802219089Spjd sa_handle_t *sa_hdl; 803219089Spjd dmu_object_type_t obj_type; 804219089Spjd sa_bulk_attr_t sa_attrs[ZPL_END]; 805219089Spjd int cnt = 0; 806219089Spjd zfs_acl_locator_cb_t locate = { 0 }; 807168404Spjd 808168404Spjd ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE)); 809168404Spjd 810209962Smm if (zfsvfs->z_replay) { 811185029Spjd obj = vap->va_nodeid; 812168404Spjd now = vap->va_ctime; /* see zfs_replay_create() */ 813168404Spjd gen = vap->va_nblocks; /* ditto */ 814168404Spjd } else { 815185029Spjd obj = 0; 816168404Spjd gethrestime(&now); 817168404Spjd gen = dmu_tx_get_txg(tx); 818168404Spjd } 819168404Spjd 820219089Spjd obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; 821219089Spjd bonuslen = (obj_type == DMU_OT_SA) ? 822219089Spjd DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; 823219089Spjd 824168404Spjd /* 825168404Spjd * Create a new DMU object. 826168404Spjd */ 827168404Spjd /* 828168404Spjd * There's currently no mechanism for pre-reading the blocks that will 829219089Spjd * be needed to allocate a new object, so we accept the small chance 830168404Spjd * that there will be an i/o error and we will fail one of the 831168404Spjd * assertions below. 832168404Spjd */ 833168404Spjd if (vap->va_type == VDIR) { 834209962Smm if (zfsvfs->z_replay) { 835185029Spjd err = zap_create_claim_norm(zfsvfs->z_os, obj, 836185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 837219089Spjd obj_type, bonuslen, tx); 838168404Spjd ASSERT3U(err, ==, 0); 839168404Spjd } else { 840185029Spjd obj = zap_create_norm(zfsvfs->z_os, 841185029Spjd zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, 842219089Spjd obj_type, bonuslen, tx); 843168404Spjd } 844168404Spjd } else { 845209962Smm if (zfsvfs->z_replay) { 846185029Spjd err = dmu_object_claim(zfsvfs->z_os, obj, 847168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 848219089Spjd obj_type, bonuslen, tx); 849168404Spjd ASSERT3U(err, ==, 0); 850168404Spjd } else { 851185029Spjd obj = dmu_object_alloc(zfsvfs->z_os, 852168404Spjd DMU_OT_PLAIN_FILE_CONTENTS, 0, 853219089Spjd obj_type, bonuslen, tx); 854168404Spjd } 855168404Spjd } 856207334Spjd 857207334Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 858219089Spjd VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); 859168404Spjd 860168404Spjd /* 861168404Spjd * If this is the root, fix up the half-initialized parent pointer 862168404Spjd * to reference the just-allocated physical data area. 863168404Spjd */ 864168404Spjd if (flag & IS_ROOT_NODE) { 865185029Spjd dzp->z_id = obj; 866219089Spjd } else { 867219089Spjd dzp_pflags = dzp->z_pflags; 868168404Spjd } 869168404Spjd 870168404Spjd /* 871168404Spjd * If parent is an xattr, so am I. 872168404Spjd */ 873219089Spjd if (dzp_pflags & ZFS_XATTR) { 874168404Spjd flag |= IS_XATTR; 875168404Spjd } 876168404Spjd 877185029Spjd if (zfsvfs->z_use_fuids) 878219089Spjd pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; 879219089Spjd else 880219089Spjd pflags = 0; 881185029Spjd 882168404Spjd if (vap->va_type == VDIR) { 883219089Spjd size = 2; /* contents ("." and "..") */ 884219089Spjd links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; 885219089Spjd } else { 886219089Spjd size = links = 0; 887168404Spjd } 888168404Spjd 889219089Spjd if (vap->va_type == VBLK || vap->va_type == VCHR) { 890219089Spjd rdev = zfs_expldev(vap->va_rdev); 891219089Spjd } 892219089Spjd 893219089Spjd parent = dzp->z_id; 894219089Spjd mode = acl_ids->z_mode; 895168404Spjd if (flag & IS_XATTR) 896219089Spjd pflags |= ZFS_XATTR; 897168404Spjd 898219089Spjd /* 899219089Spjd * No execs denied will be deterimed when zfs_mode_compute() is called. 900219089Spjd */ 901219089Spjd pflags |= acl_ids->z_aclp->z_hints & 902219089Spjd (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| 903219089Spjd ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); 904168404Spjd 905219089Spjd ZFS_TIME_ENCODE(&now, crtime); 906219089Spjd ZFS_TIME_ENCODE(&now, ctime); 907168404Spjd 908168404Spjd if (vap->va_mask & AT_ATIME) { 909219089Spjd ZFS_TIME_ENCODE(&vap->va_atime, atime); 910168404Spjd } else { 911219089Spjd ZFS_TIME_ENCODE(&now, atime); 912168404Spjd } 913168404Spjd 914168404Spjd if (vap->va_mask & AT_MTIME) { 915219089Spjd ZFS_TIME_ENCODE(&vap->va_mtime, mtime); 916168404Spjd } else { 917219089Spjd ZFS_TIME_ENCODE(&now, mtime); 918168404Spjd } 919168404Spjd 920219089Spjd /* Now add in all of the "SA" attributes */ 921219089Spjd VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, 922219089Spjd &sa_hdl)); 923219089Spjd 924219089Spjd /* 925219089Spjd * Setup the array of attributes to be replaced/set on the new file 926219089Spjd * 927219089Spjd * order for DMU_OT_ZNODE is critical since it needs to be constructed 928219089Spjd * in the old znode_phys_t format. Don't change this ordering 929219089Spjd */ 930219089Spjd 931219089Spjd if (obj_type == DMU_OT_ZNODE) { 932219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 933219089Spjd NULL, &atime, 16); 934219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 935219089Spjd NULL, &mtime, 16); 936219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 937219089Spjd NULL, &ctime, 16); 938219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 939219089Spjd NULL, &crtime, 16); 940219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 941219089Spjd NULL, &gen, 8); 942219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 943219089Spjd NULL, &mode, 8); 944219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 945219089Spjd NULL, &size, 8); 946219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 947219089Spjd NULL, &parent, 8); 948219089Spjd } else { 949219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), 950219089Spjd NULL, &mode, 8); 951219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), 952219089Spjd NULL, &size, 8); 953219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), 954219089Spjd NULL, &gen, 8); 955219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 956219089Spjd &acl_ids->z_fuid, 8); 957219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 958219089Spjd &acl_ids->z_fgid, 8); 959219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), 960219089Spjd NULL, &parent, 8); 961219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 962219089Spjd NULL, &pflags, 8); 963219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), 964219089Spjd NULL, &atime, 16); 965219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), 966219089Spjd NULL, &mtime, 16); 967219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), 968219089Spjd NULL, &ctime, 16); 969219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), 970219089Spjd NULL, &crtime, 16); 971219089Spjd } 972219089Spjd 973219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); 974219089Spjd 975219089Spjd if (obj_type == DMU_OT_ZNODE) { 976219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, 977219089Spjd &empty_xattr, 8); 978219089Spjd } 979219089Spjd if (obj_type == DMU_OT_ZNODE || 980219089Spjd (vap->va_type == VBLK || vap->va_type == VCHR)) { 981219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), 982219089Spjd NULL, &rdev, 8); 983219089Spjd 984219089Spjd } 985219089Spjd if (obj_type == DMU_OT_ZNODE) { 986219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), 987219089Spjd NULL, &pflags, 8); 988219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, 989219089Spjd &acl_ids->z_fuid, 8); 990219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, 991219089Spjd &acl_ids->z_fgid, 8); 992219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, 993219089Spjd sizeof (uint64_t) * 4); 994219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, 995219089Spjd &acl_phys, sizeof (zfs_acl_phys_t)); 996219089Spjd } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { 997219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, 998219089Spjd &acl_ids->z_aclp->z_acl_count, 8); 999219089Spjd locate.cb_aclp = acl_ids->z_aclp; 1000219089Spjd SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), 1001219089Spjd zfs_acl_data_locator, &locate, 1002219089Spjd acl_ids->z_aclp->z_acl_bytes); 1003219089Spjd mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, 1004219089Spjd acl_ids->z_fuid, acl_ids->z_fgid); 1005219089Spjd } 1006219089Spjd 1007219089Spjd VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); 1008219089Spjd 1009185029Spjd if (!(flag & IS_ROOT_NODE)) { 1010219089Spjd *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); 1011219089Spjd ASSERT(*zpp != NULL); 1012185029Spjd } else { 1013185029Spjd /* 1014185029Spjd * If we are creating the root node, the "parent" we 1015185029Spjd * passed in is the znode for the root. 1016185029Spjd */ 1017185029Spjd *zpp = dzp; 1018219089Spjd 1019219089Spjd (*zpp)->z_sa_hdl = sa_hdl; 1020185029Spjd } 1021219089Spjd 1022219089Spjd (*zpp)->z_pflags = pflags; 1023219089Spjd (*zpp)->z_mode = mode; 1024219089Spjd 1025209962Smm if (vap->va_mask & AT_XVATTR) 1026219089Spjd zfs_xvattr_set(*zpp, (xvattr_t *)vap, tx); 1027219089Spjd 1028219089Spjd if (obj_type == DMU_OT_ZNODE || 1029219089Spjd acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { 1030219089Spjd err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); 1031219089Spjd ASSERT3P(err, ==, 0); 1032219089Spjd } 1033185029Spjd if (!(flag & IS_ROOT_NODE)) { 1034185029Spjd vnode_t *vp; 1035168404Spjd 1036185029Spjd vp = ZTOV(*zpp); 1037185029Spjd vp->v_vflag |= VV_FORCEINSMQ; 1038185029Spjd err = insmntque(vp, zfsvfs->z_vfs); 1039185029Spjd vp->v_vflag &= ~VV_FORCEINSMQ; 1040185029Spjd KASSERT(err == 0, ("insmntque() failed: error %d", err)); 1041185029Spjd } 1042219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1043185029Spjd} 1044168404Spjd 1045219089Spjd/* 1046219089Spjd * zfs_xvattr_set only updates the in-core attributes 1047219089Spjd * it is assumed the caller will be doing an sa_bulk_update 1048219089Spjd * to push the changes out 1049219089Spjd */ 1050185029Spjdvoid 1051219089Spjdzfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) 1052185029Spjd{ 1053185029Spjd xoptattr_t *xoap; 1054168404Spjd 1055185029Spjd xoap = xva_getxoptattr(xvap); 1056185029Spjd ASSERT(xoap); 1057168404Spjd 1058185029Spjd if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { 1059219089Spjd uint64_t times[2]; 1060219089Spjd ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); 1061219089Spjd (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), 1062219089Spjd ×, sizeof (times), tx); 1063185029Spjd XVA_SET_RTN(xvap, XAT_CREATETIME); 1064168404Spjd } 1065185029Spjd if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { 1066219089Spjd ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, 1067219089Spjd zp->z_pflags, tx); 1068185029Spjd XVA_SET_RTN(xvap, XAT_READONLY); 1069185029Spjd } 1070185029Spjd if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { 1071219089Spjd ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, 1072219089Spjd zp->z_pflags, tx); 1073185029Spjd XVA_SET_RTN(xvap, XAT_HIDDEN); 1074185029Spjd } 1075185029Spjd if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { 1076219089Spjd ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, 1077219089Spjd zp->z_pflags, tx); 1078185029Spjd XVA_SET_RTN(xvap, XAT_SYSTEM); 1079185029Spjd } 1080185029Spjd if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { 1081219089Spjd ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, 1082219089Spjd zp->z_pflags, tx); 1083185029Spjd XVA_SET_RTN(xvap, XAT_ARCHIVE); 1084185029Spjd } 1085185029Spjd if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { 1086219089Spjd ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, 1087219089Spjd zp->z_pflags, tx); 1088185029Spjd XVA_SET_RTN(xvap, XAT_IMMUTABLE); 1089185029Spjd } 1090185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { 1091219089Spjd ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, 1092219089Spjd zp->z_pflags, tx); 1093185029Spjd XVA_SET_RTN(xvap, XAT_NOUNLINK); 1094185029Spjd } 1095185029Spjd if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { 1096219089Spjd ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, 1097219089Spjd zp->z_pflags, tx); 1098185029Spjd XVA_SET_RTN(xvap, XAT_APPENDONLY); 1099185029Spjd } 1100185029Spjd if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { 1101219089Spjd ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, 1102219089Spjd zp->z_pflags, tx); 1103185029Spjd XVA_SET_RTN(xvap, XAT_NODUMP); 1104185029Spjd } 1105185029Spjd if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { 1106219089Spjd ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, 1107219089Spjd zp->z_pflags, tx); 1108185029Spjd XVA_SET_RTN(xvap, XAT_OPAQUE); 1109185029Spjd } 1110185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { 1111185029Spjd ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, 1112219089Spjd xoap->xoa_av_quarantined, zp->z_pflags, tx); 1113185029Spjd XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); 1114185029Spjd } 1115185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { 1116219089Spjd ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, 1117219089Spjd zp->z_pflags, tx); 1118185029Spjd XVA_SET_RTN(xvap, XAT_AV_MODIFIED); 1119185029Spjd } 1120185029Spjd if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { 1121219089Spjd zfs_sa_set_scanstamp(zp, xvap, tx); 1122185029Spjd XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); 1123185029Spjd } 1124219089Spjd if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { 1125219089Spjd ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, 1126219089Spjd zp->z_pflags, tx); 1127219089Spjd XVA_SET_RTN(xvap, XAT_REPARSE); 1128219089Spjd } 1129219089Spjd if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { 1130219089Spjd ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, 1131219089Spjd zp->z_pflags, tx); 1132219089Spjd XVA_SET_RTN(xvap, XAT_OFFLINE); 1133219089Spjd } 1134219089Spjd if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { 1135219089Spjd ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, 1136219089Spjd zp->z_pflags, tx); 1137219089Spjd XVA_SET_RTN(xvap, XAT_SPARSE); 1138219089Spjd } 1139168404Spjd} 1140168404Spjd 1141168404Spjdint 1142168404Spjdzfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) 1143168404Spjd{ 1144168404Spjd dmu_object_info_t doi; 1145168404Spjd dmu_buf_t *db; 1146168404Spjd znode_t *zp; 1147219089Spjd int err; 1148219089Spjd sa_handle_t *hdl; 1149219089Spjd int first = 1; 1150168404Spjd 1151168404Spjd *zpp = NULL; 1152219089Spjd 1153185029Spjdagain: 1154168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1155168404Spjd 1156219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1157168404Spjd if (err) { 1158168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1159168404Spjd return (err); 1160168404Spjd } 1161168404Spjd 1162168404Spjd dmu_object_info_from_db(db, &doi); 1163219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1164219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1165219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1166219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1167219089Spjd sa_buf_rele(db, NULL); 1168168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1169168404Spjd return (EINVAL); 1170168404Spjd } 1171168404Spjd 1172219089Spjd hdl = dmu_buf_get_user(db); 1173219089Spjd if (hdl != NULL) { 1174219089Spjd zp = sa_get_userdata(hdl); 1175168404Spjd 1176219089Spjd 1177185029Spjd /* 1178219089Spjd * Since "SA" does immediate eviction we 1179219089Spjd * should never find a sa handle that doesn't 1180219089Spjd * know about the znode. 1181185029Spjd */ 1182219089Spjd 1183219089Spjd ASSERT3P(zp, !=, NULL); 1184219089Spjd 1185219089Spjd mutex_enter(&zp->z_lock); 1186168404Spjd ASSERT3U(zp->z_id, ==, obj_num); 1187168404Spjd if (zp->z_unlinked) { 1188185029Spjd err = ENOENT; 1189168404Spjd } else { 1190219089Spjd vnode_t *vp; 1191197458Spjd int dying = 0; 1192197458Spjd 1193197458Spjd vp = ZTOV(zp); 1194197458Spjd if (vp == NULL) 1195197458Spjd dying = 1; 1196197458Spjd else { 1197197458Spjd VN_HOLD(vp); 1198197131Spjd if ((vp->v_iflag & VI_DOOMED) != 0) { 1199197458Spjd dying = 1; 1200197458Spjd /* 1201197458Spjd * Don't VN_RELE() vnode here, because 1202197458Spjd * it can call vn_lock() which creates 1203197458Spjd * LOR between vnode lock and znode 1204197458Spjd * lock. We will VN_RELE() the vnode 1205197458Spjd * after droping znode lock. 1206197458Spjd */ 1207197458Spjd } 1208197131Spjd } 1209197458Spjd if (dying) { 1210185029Spjd if (first) { 1211185029Spjd ZFS_LOG(1, "dying znode detected (zp=%p)", zp); 1212185029Spjd first = 0; 1213185029Spjd } 1214185029Spjd /* 1215185029Spjd * znode is dying so we can't reuse it, we must 1216185029Spjd * wait until destruction is completed. 1217185029Spjd */ 1218219089Spjd sa_buf_rele(db, NULL); 1219185029Spjd mutex_exit(&zp->z_lock); 1220185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1221197458Spjd if (vp != NULL) 1222197458Spjd VN_RELE(vp); 1223185029Spjd tsleep(zp, 0, "zcollide", 1); 1224185029Spjd goto again; 1225185029Spjd } 1226185029Spjd *zpp = zp; 1227185029Spjd err = 0; 1228168404Spjd } 1229219089Spjd sa_buf_rele(db, NULL); 1230168404Spjd mutex_exit(&zp->z_lock); 1231168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1232185029Spjd return (err); 1233168404Spjd } 1234168404Spjd 1235168404Spjd /* 1236168404Spjd * Not found create new znode/vnode 1237207334Spjd * but only if file exists. 1238207334Spjd * 1239207334Spjd * There is a small window where zfs_vget() could 1240207334Spjd * find this object while a file create is still in 1241219089Spjd * progress. This is checked for in zfs_znode_alloc() 1242219089Spjd * 1243219089Spjd * if zfs_znode_alloc() fails it will drop the hold on the 1244219089Spjd * bonus buffer. 1245168404Spjd */ 1246219089Spjd zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, 1247219089Spjd doi.doi_bonus_type, NULL); 1248219089Spjd if (zp == NULL) { 1249219089Spjd err = ENOENT; 1250219089Spjd } else { 1251219089Spjd *zpp = zp; 1252219089Spjd } 1253219089Spjd if (err == 0) { 1254219089Spjd vnode_t *vp = ZTOV(zp); 1255185029Spjd 1256207334Spjd err = insmntque(vp, zfsvfs->z_vfs); 1257219089Spjd if (err == 0) 1258219089Spjd VOP_UNLOCK(vp, 0); 1259219089Spjd else { 1260219089Spjd zp->z_vnode = NULL; 1261219089Spjd zfs_znode_dmu_fini(zp); 1262219089Spjd zfs_znode_free(zp); 1263219089Spjd *zpp = NULL; 1264219089Spjd } 1265207334Spjd } 1266168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1267207334Spjd return (err); 1268168404Spjd} 1269168404Spjd 1270185029Spjdint 1271185029Spjdzfs_rezget(znode_t *zp) 1272185029Spjd{ 1273185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1274185029Spjd dmu_object_info_t doi; 1275185029Spjd dmu_buf_t *db; 1276225166Smm vnode_t *vp; 1277185029Spjd uint64_t obj_num = zp->z_id; 1278219089Spjd uint64_t mode, size; 1279219089Spjd sa_bulk_attr_t bulk[8]; 1280185029Spjd int err; 1281219089Spjd int count = 0; 1282219089Spjd uint64_t gen; 1283185029Spjd 1284185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); 1285185029Spjd 1286219089Spjd mutex_enter(&zp->z_acl_lock); 1287219089Spjd if (zp->z_acl_cached) { 1288219089Spjd zfs_acl_free(zp->z_acl_cached); 1289219089Spjd zp->z_acl_cached = NULL; 1290219089Spjd } 1291219089Spjd 1292219089Spjd mutex_exit(&zp->z_acl_lock); 1293219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1294219089Spjd err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); 1295185029Spjd if (err) { 1296185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1297185029Spjd return (err); 1298185029Spjd } 1299185029Spjd 1300185029Spjd dmu_object_info_from_db(db, &doi); 1301219089Spjd if (doi.doi_bonus_type != DMU_OT_SA && 1302219089Spjd (doi.doi_bonus_type != DMU_OT_ZNODE || 1303219089Spjd (doi.doi_bonus_type == DMU_OT_ZNODE && 1304219089Spjd doi.doi_bonus_size < sizeof (znode_phys_t)))) { 1305219089Spjd sa_buf_rele(db, NULL); 1306185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1307185029Spjd return (EINVAL); 1308185029Spjd } 1309185029Spjd 1310219089Spjd zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); 1311219089Spjd size = zp->z_size; 1312219089Spjd 1313219089Spjd /* reload cached values */ 1314219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, 1315219089Spjd &gen, sizeof (gen)); 1316219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, 1317219089Spjd &zp->z_size, sizeof (zp->z_size)); 1318219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, 1319219089Spjd &zp->z_links, sizeof (zp->z_links)); 1320219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, 1321219089Spjd &zp->z_pflags, sizeof (zp->z_pflags)); 1322219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, 1323219089Spjd &zp->z_atime, sizeof (zp->z_atime)); 1324219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, 1325219089Spjd &zp->z_uid, sizeof (zp->z_uid)); 1326219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, 1327219089Spjd &zp->z_gid, sizeof (zp->z_gid)); 1328219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, 1329219089Spjd &mode, sizeof (mode)); 1330219089Spjd 1331219089Spjd if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { 1332219089Spjd zfs_znode_dmu_fini(zp); 1333185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1334185029Spjd return (EIO); 1335185029Spjd } 1336185029Spjd 1337219089Spjd zp->z_mode = mode; 1338219089Spjd 1339219089Spjd if (gen != zp->z_gen) { 1340219089Spjd zfs_znode_dmu_fini(zp); 1341219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1342219089Spjd return (EIO); 1343211932Smm } 1344211932Smm 1345219089Spjd /* 1346219089Spjd * XXXPJD: Not sure how is that possible, but under heavy 1347219089Spjd * zfs recv -F load it happens that z_gen is the same, but 1348219089Spjd * vnode type is different than znode type. This would mean 1349219089Spjd * that for example regular file was replaced with directory 1350219089Spjd * which has the same object number. 1351219089Spjd */ 1352225166Smm vp = ZTOV(zp); 1353225166Smm if (vp != NULL && 1354225166Smm vp->v_type != IFTOVT((mode_t)zp->z_mode)) { 1355219089Spjd zfs_znode_dmu_fini(zp); 1356219089Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1357219089Spjd return (EIO); 1358219089Spjd } 1359219089Spjd 1360219089Spjd zp->z_unlinked = (zp->z_links == 0); 1361185029Spjd zp->z_blksz = doi.doi_data_block_size; 1362225166Smm if (vp != NULL) { 1363225166Smm vn_pages_remove(vp, 0, 0); 1364225166Smm if (zp->z_size != size) 1365225166Smm vnode_pager_setsize(vp, zp->z_size); 1366225166Smm } 1367185029Spjd 1368185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); 1369185029Spjd 1370185029Spjd return (0); 1371185029Spjd} 1372185029Spjd 1373168404Spjdvoid 1374168404Spjdzfs_znode_delete(znode_t *zp, dmu_tx_t *tx) 1375168404Spjd{ 1376168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1377185029Spjd objset_t *os = zfsvfs->z_os; 1378185029Spjd uint64_t obj = zp->z_id; 1379219089Spjd uint64_t acl_obj = zfs_external_acl(zp); 1380168404Spjd 1381185029Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); 1382219089Spjd if (acl_obj) { 1383219089Spjd VERIFY(!zp->z_is_sa); 1384185029Spjd VERIFY(0 == dmu_object_free(os, acl_obj, tx)); 1385219089Spjd } 1386185029Spjd VERIFY(0 == dmu_object_free(os, obj, tx)); 1387185029Spjd zfs_znode_dmu_fini(zp); 1388185029Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); 1389185029Spjd zfs_znode_free(zp); 1390168404Spjd} 1391168404Spjd 1392168404Spjdvoid 1393168404Spjdzfs_zinactive(znode_t *zp) 1394168404Spjd{ 1395168404Spjd vnode_t *vp = ZTOV(zp); 1396168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1397168404Spjd uint64_t z_id = zp->z_id; 1398201406Sdelphij int vfslocked; 1399168404Spjd 1400219089Spjd ASSERT(zp->z_sa_hdl); 1401168404Spjd 1402168404Spjd /* 1403168404Spjd * Don't allow a zfs_zget() while were trying to release this znode 1404168404Spjd */ 1405168404Spjd ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id); 1406168404Spjd 1407168404Spjd mutex_enter(&zp->z_lock); 1408168404Spjd VI_LOCK(vp); 1409168404Spjd if (vp->v_count > 0) { 1410168404Spjd /* 1411168404Spjd * If the hold count is greater than zero, somebody has 1412168404Spjd * obtained a new reference on this znode while we were 1413168404Spjd * processing it here, so we are done. 1414168404Spjd */ 1415168404Spjd VI_UNLOCK(vp); 1416168404Spjd mutex_exit(&zp->z_lock); 1417168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1418168404Spjd return; 1419168404Spjd } 1420168404Spjd VI_UNLOCK(vp); 1421168404Spjd 1422168404Spjd /* 1423168404Spjd * If this was the last reference to a file with no links, 1424168404Spjd * remove the file from the file system. 1425168404Spjd */ 1426168404Spjd if (zp->z_unlinked) { 1427168404Spjd mutex_exit(&zp->z_lock); 1428168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1429168404Spjd ASSERT(vp->v_count == 0); 1430168404Spjd vrecycle(vp, curthread); 1431201406Sdelphij vfslocked = VFS_LOCK_GIANT(zfsvfs->z_vfs); 1432168404Spjd zfs_rmnode(zp); 1433201406Sdelphij VFS_UNLOCK_GIANT(vfslocked); 1434168404Spjd return; 1435168404Spjd } 1436219089Spjd 1437168404Spjd mutex_exit(&zp->z_lock); 1438168404Spjd ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); 1439168404Spjd} 1440168404Spjd 1441168404Spjdvoid 1442168404Spjdzfs_znode_free(znode_t *zp) 1443168404Spjd{ 1444168404Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1445168404Spjd 1446185029Spjd ASSERT(ZTOV(zp) == NULL); 1447219089Spjd ASSERT(zp->z_sa_hdl == NULL); 1448168404Spjd mutex_enter(&zfsvfs->z_znodes_lock); 1449185029Spjd POINTER_INVALIDATE(&zp->z_zfsvfs); 1450168404Spjd list_remove(&zfsvfs->z_all_znodes, zp); 1451168404Spjd mutex_exit(&zfsvfs->z_znodes_lock); 1452168404Spjd 1453211932Smm if (zp->z_acl_cached) { 1454211932Smm zfs_acl_free(zp->z_acl_cached); 1455211932Smm zp->z_acl_cached = NULL; 1456211932Smm } 1457211932Smm 1458168404Spjd kmem_cache_free(znode_cache, zp); 1459185029Spjd 1460185029Spjd VFS_RELE(zfsvfs->z_vfs); 1461168404Spjd} 1462168404Spjd 1463168404Spjdvoid 1464219089Spjdzfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], 1465219089Spjd uint64_t ctime[2], boolean_t have_tx) 1466168404Spjd{ 1467168404Spjd timestruc_t now; 1468168404Spjd 1469168404Spjd gethrestime(&now); 1470168404Spjd 1471219089Spjd if (have_tx) { /* will sa_bulk_update happen really soon? */ 1472168404Spjd zp->z_atime_dirty = 0; 1473168404Spjd zp->z_seq++; 1474168404Spjd } else { 1475168404Spjd zp->z_atime_dirty = 1; 1476168404Spjd } 1477168404Spjd 1478219089Spjd if (flag & AT_ATIME) { 1479219089Spjd ZFS_TIME_ENCODE(&now, zp->z_atime); 1480219089Spjd } 1481168404Spjd 1482185029Spjd if (flag & AT_MTIME) { 1483219089Spjd ZFS_TIME_ENCODE(&now, mtime); 1484219089Spjd if (zp->z_zfsvfs->z_use_fuids) { 1485219089Spjd zp->z_pflags |= (ZFS_ARCHIVE | 1486219089Spjd ZFS_AV_MODIFIED); 1487219089Spjd } 1488185029Spjd } 1489168404Spjd 1490185029Spjd if (flag & AT_CTIME) { 1491219089Spjd ZFS_TIME_ENCODE(&now, ctime); 1492185029Spjd if (zp->z_zfsvfs->z_use_fuids) 1493219089Spjd zp->z_pflags |= ZFS_ARCHIVE; 1494185029Spjd } 1495168404Spjd} 1496168404Spjd 1497168404Spjd/* 1498168404Spjd * Grow the block size for a file. 1499168404Spjd * 1500168404Spjd * IN: zp - znode of file to free data in. 1501168404Spjd * size - requested block size 1502168404Spjd * tx - open transaction. 1503168404Spjd * 1504168404Spjd * NOTE: this function assumes that the znode is write locked. 1505168404Spjd */ 1506168404Spjdvoid 1507168404Spjdzfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) 1508168404Spjd{ 1509168404Spjd int error; 1510168404Spjd u_longlong_t dummy; 1511168404Spjd 1512168404Spjd if (size <= zp->z_blksz) 1513168404Spjd return; 1514168404Spjd /* 1515168404Spjd * If the file size is already greater than the current blocksize, 1516168404Spjd * we will not grow. If there is more than one block in a file, 1517168404Spjd * the blocksize cannot change. 1518168404Spjd */ 1519219089Spjd if (zp->z_blksz && zp->z_size > zp->z_blksz) 1520168404Spjd return; 1521168404Spjd 1522168404Spjd error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id, 1523168404Spjd size, 0, tx); 1524219089Spjd 1525168404Spjd if (error == ENOTSUP) 1526168404Spjd return; 1527168404Spjd ASSERT3U(error, ==, 0); 1528168404Spjd 1529168404Spjd /* What blocksize did we actually get? */ 1530219089Spjd dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); 1531168404Spjd} 1532168404Spjd 1533219089Spjd#ifdef sun 1534168404Spjd/* 1535219089Spjd * This is a dummy interface used when pvn_vplist_dirty() should *not* 1536219089Spjd * be calling back into the fs for a putpage(). E.g.: when truncating 1537219089Spjd * a file, the pages being "thrown away* don't need to be written out. 1538219089Spjd */ 1539219089Spjd/* ARGSUSED */ 1540219089Spjdstatic int 1541219089Spjdzfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, 1542219089Spjd int flags, cred_t *cr) 1543219089Spjd{ 1544219089Spjd ASSERT(0); 1545219089Spjd return (0); 1546219089Spjd} 1547219089Spjd#endif /* sun */ 1548219089Spjd 1549219089Spjd/* 1550185029Spjd * Increase the file length 1551168404Spjd * 1552168404Spjd * IN: zp - znode of file to free data in. 1553185029Spjd * end - new end-of-file 1554168404Spjd * 1555168404Spjd * RETURN: 0 if success 1556168404Spjd * error code if failure 1557168404Spjd */ 1558185029Spjdstatic int 1559185029Spjdzfs_extend(znode_t *zp, uint64_t end) 1560168404Spjd{ 1561185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1562168404Spjd dmu_tx_t *tx; 1563168404Spjd rl_t *rl; 1564185029Spjd uint64_t newblksz; 1565168404Spjd int error; 1566168404Spjd 1567168404Spjd /* 1568185029Spjd * We will change zp_size, lock the whole file. 1569168404Spjd */ 1570185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1571168404Spjd 1572168404Spjd /* 1573168404Spjd * Nothing to do if file already at desired length. 1574168404Spjd */ 1575219089Spjd if (end <= zp->z_size) { 1576168404Spjd zfs_range_unlock(rl); 1577168404Spjd return (0); 1578168404Spjd } 1579185029Spjdtop: 1580168404Spjd tx = dmu_tx_create(zfsvfs->z_os); 1581219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1582219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1583185029Spjd if (end > zp->z_blksz && 1584168404Spjd (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { 1585168404Spjd /* 1586168404Spjd * We are growing the file past the current block size. 1587168404Spjd */ 1588168404Spjd if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) { 1589168404Spjd ASSERT(!ISP2(zp->z_blksz)); 1590185029Spjd newblksz = MIN(end, SPA_MAXBLOCKSIZE); 1591168404Spjd } else { 1592185029Spjd newblksz = MIN(end, zp->z_zfsvfs->z_max_blksz); 1593168404Spjd } 1594185029Spjd dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); 1595185029Spjd } else { 1596185029Spjd newblksz = 0; 1597168404Spjd } 1598168404Spjd 1599209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1600168404Spjd if (error) { 1601209962Smm if (error == ERESTART) { 1602168404Spjd dmu_tx_wait(tx); 1603185029Spjd dmu_tx_abort(tx); 1604185029Spjd goto top; 1605185029Spjd } 1606168404Spjd dmu_tx_abort(tx); 1607168404Spjd zfs_range_unlock(rl); 1608168404Spjd return (error); 1609168404Spjd } 1610168404Spjd 1611185029Spjd if (newblksz) 1612185029Spjd zfs_grow_blocksize(zp, newblksz, tx); 1613168404Spjd 1614219089Spjd zp->z_size = end; 1615168404Spjd 1616219089Spjd VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), 1617219089Spjd &zp->z_size, sizeof (zp->z_size), tx)); 1618219089Spjd 1619219089Spjd vnode_pager_setsize(ZTOV(zp), end); 1620219089Spjd 1621185029Spjd zfs_range_unlock(rl); 1622168404Spjd 1623185029Spjd dmu_tx_commit(tx); 1624185029Spjd 1625185029Spjd return (0); 1626185029Spjd} 1627185029Spjd 1628185029Spjd/* 1629185029Spjd * Free space in a file. 1630185029Spjd * 1631185029Spjd * IN: zp - znode of file to free data in. 1632185029Spjd * off - start of section to free. 1633185029Spjd * len - length of section to free. 1634185029Spjd * 1635185029Spjd * RETURN: 0 if success 1636185029Spjd * error code if failure 1637185029Spjd */ 1638185029Spjdstatic int 1639185029Spjdzfs_free_range(znode_t *zp, uint64_t off, uint64_t len) 1640185029Spjd{ 1641185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1642185029Spjd rl_t *rl; 1643185029Spjd int error; 1644185029Spjd 1645185029Spjd /* 1646185029Spjd * Lock the range being freed. 1647185029Spjd */ 1648185029Spjd rl = zfs_range_lock(zp, off, len, RL_WRITER); 1649185029Spjd 1650185029Spjd /* 1651185029Spjd * Nothing to do if file already at desired length. 1652185029Spjd */ 1653219089Spjd if (off >= zp->z_size) { 1654185029Spjd zfs_range_unlock(rl); 1655185029Spjd return (0); 1656168404Spjd } 1657168404Spjd 1658219089Spjd if (off + len > zp->z_size) 1659219089Spjd len = zp->z_size - off; 1660185029Spjd 1661185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); 1662185029Spjd 1663185029Spjd if (error == 0) { 1664185029Spjd /* 1665185029Spjd * In FreeBSD we cannot free block in the middle of a file, 1666219089Spjd * but only at the end of a file, so this code path should 1667219089Spjd * never happen. 1668185029Spjd */ 1669185029Spjd vnode_pager_setsize(ZTOV(zp), off); 1670168404Spjd } 1671168404Spjd 1672168404Spjd zfs_range_unlock(rl); 1673168404Spjd 1674185029Spjd return (error); 1675185029Spjd} 1676185029Spjd 1677185029Spjd/* 1678185029Spjd * Truncate a file 1679185029Spjd * 1680185029Spjd * IN: zp - znode of file to free data in. 1681185029Spjd * end - new end-of-file. 1682185029Spjd * 1683185029Spjd * RETURN: 0 if success 1684185029Spjd * error code if failure 1685185029Spjd */ 1686185029Spjdstatic int 1687185029Spjdzfs_trunc(znode_t *zp, uint64_t end) 1688185029Spjd{ 1689185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1690185029Spjd vnode_t *vp = ZTOV(zp); 1691185029Spjd dmu_tx_t *tx; 1692185029Spjd rl_t *rl; 1693185029Spjd int error; 1694219089Spjd sa_bulk_attr_t bulk[2]; 1695219089Spjd int count = 0; 1696185029Spjd 1697185029Spjd /* 1698185029Spjd * We will change zp_size, lock the whole file. 1699185029Spjd */ 1700185029Spjd rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); 1701185029Spjd 1702185029Spjd /* 1703185029Spjd * Nothing to do if file already at desired length. 1704185029Spjd */ 1705219089Spjd if (end >= zp->z_size) { 1706185029Spjd zfs_range_unlock(rl); 1707185029Spjd return (0); 1708185029Spjd } 1709185029Spjd 1710185029Spjd error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1); 1711185029Spjd if (error) { 1712185029Spjd zfs_range_unlock(rl); 1713185029Spjd return (error); 1714185029Spjd } 1715185029Spjdtop: 1716185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1717219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1718219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1719209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1720185029Spjd if (error) { 1721209962Smm if (error == ERESTART) { 1722185029Spjd dmu_tx_wait(tx); 1723185029Spjd dmu_tx_abort(tx); 1724185029Spjd goto top; 1725185029Spjd } 1726185029Spjd dmu_tx_abort(tx); 1727185029Spjd zfs_range_unlock(rl); 1728185029Spjd return (error); 1729185029Spjd } 1730185029Spjd 1731219089Spjd zp->z_size = end; 1732219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), 1733219089Spjd NULL, &zp->z_size, sizeof (zp->z_size)); 1734185029Spjd 1735219089Spjd if (end == 0) { 1736219089Spjd zp->z_pflags &= ~ZFS_SPARSE; 1737219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1738219089Spjd NULL, &zp->z_pflags, 8); 1739219089Spjd } 1740219089Spjd VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); 1741219089Spjd 1742168404Spjd dmu_tx_commit(tx); 1743168404Spjd 1744168404Spjd /* 1745168404Spjd * Clear any mapped pages in the truncated region. This has to 1746168404Spjd * happen outside of the transaction to avoid the possibility of 1747168404Spjd * a deadlock with someone trying to push a page that we are 1748168404Spjd * about to invalidate. 1749168404Spjd */ 1750185029Spjd vnode_pager_setsize(vp, end); 1751168404Spjd 1752209962Smm zfs_range_unlock(rl); 1753209962Smm 1754168404Spjd return (0); 1755168404Spjd} 1756168404Spjd 1757185029Spjd/* 1758185029Spjd * Free space in a file 1759185029Spjd * 1760185029Spjd * IN: zp - znode of file to free data in. 1761185029Spjd * off - start of range 1762185029Spjd * len - end of range (0 => EOF) 1763185029Spjd * flag - current file open mode flags. 1764185029Spjd * log - TRUE if this action should be logged 1765185029Spjd * 1766185029Spjd * RETURN: 0 if success 1767185029Spjd * error code if failure 1768185029Spjd */ 1769185029Spjdint 1770185029Spjdzfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) 1771185029Spjd{ 1772185029Spjd vnode_t *vp = ZTOV(zp); 1773185029Spjd dmu_tx_t *tx; 1774185029Spjd zfsvfs_t *zfsvfs = zp->z_zfsvfs; 1775185029Spjd zilog_t *zilog = zfsvfs->z_log; 1776219089Spjd uint64_t mode; 1777219089Spjd uint64_t mtime[2], ctime[2]; 1778219089Spjd sa_bulk_attr_t bulk[3]; 1779219089Spjd int count = 0; 1780185029Spjd int error; 1781185029Spjd 1782219089Spjd if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, 1783219089Spjd sizeof (mode))) != 0) 1784219089Spjd return (error); 1785219089Spjd 1786219089Spjd if (off > zp->z_size) { 1787185029Spjd error = zfs_extend(zp, off+len); 1788185029Spjd if (error == 0 && log) 1789185029Spjd goto log; 1790185029Spjd else 1791185029Spjd return (error); 1792185029Spjd } 1793185029Spjd 1794219089Spjd /* 1795219089Spjd * Check for any locks in the region to be freed. 1796219089Spjd */ 1797219089Spjd 1798219089Spjd if (MANDLOCK(vp, (mode_t)mode)) { 1799219089Spjd uint64_t length = (len ? len : zp->z_size - off); 1800219089Spjd if (error = chklock(vp, FWRITE, off, length, flag, NULL)) 1801219089Spjd return (error); 1802219089Spjd } 1803219089Spjd 1804185029Spjd if (len == 0) { 1805185029Spjd error = zfs_trunc(zp, off); 1806185029Spjd } else { 1807185029Spjd if ((error = zfs_free_range(zp, off, len)) == 0 && 1808219089Spjd off + len > zp->z_size) 1809185029Spjd error = zfs_extend(zp, off+len); 1810185029Spjd } 1811185029Spjd if (error || !log) 1812185029Spjd return (error); 1813185029Spjdlog: 1814185029Spjd tx = dmu_tx_create(zfsvfs->z_os); 1815219089Spjd dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 1816219089Spjd zfs_sa_upgrade_txholds(tx, zp); 1817209962Smm error = dmu_tx_assign(tx, TXG_NOWAIT); 1818185029Spjd if (error) { 1819209962Smm if (error == ERESTART) { 1820185029Spjd dmu_tx_wait(tx); 1821185029Spjd dmu_tx_abort(tx); 1822185029Spjd goto log; 1823185029Spjd } 1824185029Spjd dmu_tx_abort(tx); 1825185029Spjd return (error); 1826185029Spjd } 1827185029Spjd 1828219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); 1829219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); 1830219089Spjd SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), 1831219089Spjd NULL, &zp->z_pflags, 8); 1832219089Spjd zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); 1833219089Spjd error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); 1834219089Spjd ASSERT(error == 0); 1835219089Spjd 1836185029Spjd zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); 1837185029Spjd 1838185029Spjd dmu_tx_commit(tx); 1839185029Spjd return (0); 1840185029Spjd} 1841185029Spjd 1842168404Spjdvoid 1843185029Spjdzfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) 1844168404Spjd{ 1845168404Spjd zfsvfs_t zfsvfs; 1846219089Spjd uint64_t moid, obj, sa_obj, version; 1847185029Spjd uint64_t sense = ZFS_CASE_SENSITIVE; 1848185029Spjd uint64_t norm = 0; 1849185029Spjd nvpair_t *elem; 1850168404Spjd int error; 1851207334Spjd int i; 1852168404Spjd znode_t *rootzp = NULL; 1853199156Spjd vnode_t vnode; 1854168404Spjd vattr_t vattr; 1855185029Spjd znode_t *zp; 1856209962Smm zfs_acl_ids_t acl_ids; 1857168404Spjd 1858168404Spjd /* 1859168404Spjd * First attempt to create master node. 1860168404Spjd */ 1861168404Spjd /* 1862168404Spjd * In an empty objset, there are no blocks to read and thus 1863168404Spjd * there can be no i/o errors (which we assert below). 1864168404Spjd */ 1865168404Spjd moid = MASTER_NODE_OBJ; 1866168404Spjd error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, 1867168404Spjd DMU_OT_NONE, 0, tx); 1868168404Spjd ASSERT(error == 0); 1869168404Spjd 1870168404Spjd /* 1871168404Spjd * Set starting attributes. 1872168404Spjd */ 1873219089Spjd version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); 1874185029Spjd elem = NULL; 1875185029Spjd while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { 1876185029Spjd /* For the moment we expect all zpl props to be uint64_ts */ 1877185029Spjd uint64_t val; 1878185029Spjd char *name; 1879168404Spjd 1880185029Spjd ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); 1881185029Spjd VERIFY(nvpair_value_uint64(elem, &val) == 0); 1882185029Spjd name = nvpair_name(elem); 1883185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { 1884209962Smm if (val < version) 1885209962Smm version = val; 1886185029Spjd } else { 1887185029Spjd error = zap_update(os, moid, name, 8, 1, &val, tx); 1888185029Spjd } 1889185029Spjd ASSERT(error == 0); 1890185029Spjd if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) 1891185029Spjd norm = val; 1892185029Spjd else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) 1893185029Spjd sense = val; 1894185029Spjd } 1895185029Spjd ASSERT(version != 0); 1896209962Smm error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); 1897168404Spjd 1898168404Spjd /* 1899219089Spjd * Create zap object used for SA attribute registration 1900219089Spjd */ 1901219089Spjd 1902219089Spjd if (version >= ZPL_VERSION_SA) { 1903219089Spjd sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, 1904219089Spjd DMU_OT_NONE, 0, tx); 1905219089Spjd error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); 1906219089Spjd ASSERT(error == 0); 1907219089Spjd } else { 1908219089Spjd sa_obj = 0; 1909219089Spjd } 1910219089Spjd /* 1911168404Spjd * Create a delete queue. 1912168404Spjd */ 1913209962Smm obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); 1914168404Spjd 1915209962Smm error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); 1916168404Spjd ASSERT(error == 0); 1917168404Spjd 1918168404Spjd /* 1919168404Spjd * Create root znode. Create minimal znode/vnode/zfsvfs 1920168404Spjd * to allow zfs_mknode to work. 1921168404Spjd */ 1922185029Spjd VATTR_NULL(&vattr); 1923168404Spjd vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 1924168404Spjd vattr.va_type = VDIR; 1925168404Spjd vattr.va_mode = S_IFDIR|0755; 1926185029Spjd vattr.va_uid = crgetuid(cr); 1927185029Spjd vattr.va_gid = crgetgid(cr); 1928168404Spjd 1929219089Spjd bzero(&zfsvfs, sizeof (zfsvfs_t)); 1930219089Spjd 1931168404Spjd rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); 1932199156Spjd zfs_znode_cache_constructor(rootzp, NULL, 0); 1933219089Spjd ASSERT(!POINTER_IS_VALID(rootzp->z_zfsvfs)); 1934219089Spjd rootzp->z_moved = 0; 1935168404Spjd rootzp->z_unlinked = 0; 1936168404Spjd rootzp->z_atime_dirty = 0; 1937219089Spjd rootzp->z_is_sa = USE_SA(version, os); 1938168404Spjd 1939199156Spjd vnode.v_type = VDIR; 1940199156Spjd vnode.v_data = rootzp; 1941199156Spjd rootzp->z_vnode = &vnode; 1942185029Spjd 1943168404Spjd zfsvfs.z_os = os; 1944168404Spjd zfsvfs.z_parent = &zfsvfs; 1945185029Spjd zfsvfs.z_version = version; 1946185029Spjd zfsvfs.z_use_fuids = USE_FUIDS(version, os); 1947219089Spjd zfsvfs.z_use_sa = USE_SA(version, os); 1948185029Spjd zfsvfs.z_norm = norm; 1949219089Spjd 1950219089Spjd error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, 1951219089Spjd &zfsvfs.z_attr_table); 1952219089Spjd 1953219089Spjd ASSERT(error == 0); 1954219089Spjd 1955185029Spjd /* 1956185029Spjd * Fold case on file systems that are always or sometimes case 1957185029Spjd * insensitive. 1958185029Spjd */ 1959185029Spjd if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) 1960185029Spjd zfsvfs.z_norm |= U8_TEXTPREP_TOUPPER; 1961168404Spjd 1962168404Spjd mutex_init(&zfsvfs.z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); 1963168404Spjd list_create(&zfsvfs.z_all_znodes, sizeof (znode_t), 1964168404Spjd offsetof(znode_t, z_link_node)); 1965168404Spjd 1966207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1967207334Spjd mutex_init(&zfsvfs.z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); 1968207334Spjd 1969185029Spjd rootzp->z_zfsvfs = &zfsvfs; 1970209962Smm VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, 1971209962Smm cr, NULL, &acl_ids)); 1972219089Spjd zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); 1973185029Spjd ASSERT3P(zp, ==, rootzp); 1974185029Spjd error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); 1975168404Spjd ASSERT(error == 0); 1976209962Smm zfs_acl_ids_free(&acl_ids); 1977185029Spjd POINTER_INVALIDATE(&rootzp->z_zfsvfs); 1978168404Spjd 1979219089Spjd sa_handle_destroy(rootzp->z_sa_hdl); 1980209962Smm rootzp->z_vnode = NULL; 1981209962Smm kmem_cache_free(znode_cache, rootzp); 1982209962Smm 1983209962Smm /* 1984209962Smm * Create shares directory 1985209962Smm */ 1986209962Smm 1987209962Smm error = zfs_create_share_dir(&zfsvfs, tx); 1988209962Smm 1989209962Smm ASSERT(error == 0); 1990209962Smm 1991207334Spjd for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) 1992207334Spjd mutex_destroy(&zfsvfs.z_hold_mtx[i]); 1993168404Spjd} 1994185029Spjd 1995168404Spjd#endif /* _KERNEL */ 1996219089Spjd 1997168404Spjdstatic int 1998219089Spjdzfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) 1999168404Spjd{ 2000219089Spjd uint64_t sa_obj = 0; 2001219089Spjd int error; 2002219089Spjd 2003219089Spjd error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); 2004219089Spjd if (error != 0 && error != ENOENT) 2005219089Spjd return (error); 2006219089Spjd 2007219089Spjd error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); 2008219089Spjd return (error); 2009219089Spjd} 2010219089Spjd 2011219089Spjdstatic int 2012219089Spjdzfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, 2013219089Spjd dmu_buf_t **db, void *tag) 2014219089Spjd{ 2015168404Spjd dmu_object_info_t doi; 2016168404Spjd int error; 2017168404Spjd 2018219089Spjd if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) 2019168404Spjd return (error); 2020168404Spjd 2021219089Spjd dmu_object_info_from_db(*db, &doi); 2022219089Spjd if ((doi.doi_bonus_type != DMU_OT_SA && 2023219089Spjd doi.doi_bonus_type != DMU_OT_ZNODE) || 2024219089Spjd doi.doi_bonus_type == DMU_OT_ZNODE && 2025168404Spjd doi.doi_bonus_size < sizeof (znode_phys_t)) { 2026219089Spjd sa_buf_rele(*db, tag); 2027219089Spjd return (ENOTSUP); 2028168404Spjd } 2029168404Spjd 2030219089Spjd error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); 2031219089Spjd if (error != 0) { 2032219089Spjd sa_buf_rele(*db, tag); 2033219089Spjd return (error); 2034219089Spjd } 2035168404Spjd 2036168404Spjd return (0); 2037168404Spjd} 2038168404Spjd 2039219089Spjdvoid 2040219089Spjdzfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) 2041168404Spjd{ 2042219089Spjd sa_handle_destroy(hdl); 2043219089Spjd sa_buf_rele(db, tag); 2044219089Spjd} 2045219089Spjd 2046219089Spjd/* 2047219089Spjd * Given an object number, return its parent object number and whether 2048219089Spjd * or not the object is an extended attribute directory. 2049219089Spjd */ 2050219089Spjdstatic int 2051219089Spjdzfs_obj_to_pobj(sa_handle_t *hdl, sa_attr_type_t *sa_table, uint64_t *pobjp, 2052219089Spjd int *is_xattrdir) 2053219089Spjd{ 2054219089Spjd uint64_t parent; 2055219089Spjd uint64_t pflags; 2056219089Spjd uint64_t mode; 2057219089Spjd sa_bulk_attr_t bulk[3]; 2058219089Spjd int count = 0; 2059219089Spjd int error; 2060219089Spjd 2061219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, 2062219089Spjd &parent, sizeof (parent)); 2063219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, 2064219089Spjd &pflags, sizeof (pflags)); 2065219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2066219089Spjd &mode, sizeof (mode)); 2067219089Spjd 2068219089Spjd if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) 2069219089Spjd return (error); 2070219089Spjd 2071219089Spjd *pobjp = parent; 2072219089Spjd *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); 2073219089Spjd 2074219089Spjd return (0); 2075219089Spjd} 2076219089Spjd 2077219089Spjd/* 2078219089Spjd * Given an object number, return some zpl level statistics 2079219089Spjd */ 2080219089Spjdstatic int 2081219089Spjdzfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, 2082219089Spjd zfs_stat_t *sb) 2083219089Spjd{ 2084219089Spjd sa_bulk_attr_t bulk[4]; 2085219089Spjd int count = 0; 2086219089Spjd 2087219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, 2088219089Spjd &sb->zs_mode, sizeof (sb->zs_mode)); 2089219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, 2090219089Spjd &sb->zs_gen, sizeof (sb->zs_gen)); 2091219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, 2092219089Spjd &sb->zs_links, sizeof (sb->zs_links)); 2093219089Spjd SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, 2094219089Spjd &sb->zs_ctime, sizeof (sb->zs_ctime)); 2095219089Spjd 2096219089Spjd return (sa_bulk_lookup(hdl, bulk, count)); 2097219089Spjd} 2098219089Spjd 2099219089Spjdstatic int 2100219089Spjdzfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, 2101219089Spjd sa_attr_type_t *sa_table, char *buf, int len) 2102219089Spjd{ 2103219089Spjd sa_handle_t *sa_hdl; 2104219089Spjd sa_handle_t *prevhdl = NULL; 2105219089Spjd dmu_buf_t *prevdb = NULL; 2106219089Spjd dmu_buf_t *sa_db = NULL; 2107168404Spjd char *path = buf + len - 1; 2108168404Spjd int error; 2109168404Spjd 2110168404Spjd *path = '\0'; 2111219089Spjd sa_hdl = hdl; 2112168404Spjd 2113168404Spjd for (;;) { 2114168404Spjd uint64_t pobj; 2115168404Spjd char component[MAXNAMELEN + 2]; 2116168404Spjd size_t complen; 2117168404Spjd int is_xattrdir; 2118168404Spjd 2119219089Spjd if (prevdb) 2120219089Spjd zfs_release_sa_handle(prevhdl, prevdb, FTAG); 2121219089Spjd 2122219089Spjd if ((error = zfs_obj_to_pobj(sa_hdl, sa_table, &pobj, 2123168404Spjd &is_xattrdir)) != 0) 2124168404Spjd break; 2125168404Spjd 2126168404Spjd if (pobj == obj) { 2127168404Spjd if (path[0] != '/') 2128168404Spjd *--path = '/'; 2129168404Spjd break; 2130168404Spjd } 2131168404Spjd 2132168404Spjd component[0] = '/'; 2133168404Spjd if (is_xattrdir) { 2134168404Spjd (void) sprintf(component + 1, "<xattrdir>"); 2135168404Spjd } else { 2136185029Spjd error = zap_value_search(osp, pobj, obj, 2137185029Spjd ZFS_DIRENT_OBJ(-1ULL), component + 1); 2138168404Spjd if (error != 0) 2139168404Spjd break; 2140168404Spjd } 2141168404Spjd 2142168404Spjd complen = strlen(component); 2143168404Spjd path -= complen; 2144168404Spjd ASSERT(path >= buf); 2145168404Spjd bcopy(component, path, complen); 2146168404Spjd obj = pobj; 2147219089Spjd 2148219089Spjd if (sa_hdl != hdl) { 2149219089Spjd prevhdl = sa_hdl; 2150219089Spjd prevdb = sa_db; 2151219089Spjd } 2152219089Spjd error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); 2153219089Spjd if (error != 0) { 2154219089Spjd sa_hdl = prevhdl; 2155219089Spjd sa_db = prevdb; 2156219089Spjd break; 2157219089Spjd } 2158168404Spjd } 2159168404Spjd 2160219089Spjd if (sa_hdl != NULL && sa_hdl != hdl) { 2161219089Spjd ASSERT(sa_db != NULL); 2162219089Spjd zfs_release_sa_handle(sa_hdl, sa_db, FTAG); 2163219089Spjd } 2164219089Spjd 2165168404Spjd if (error == 0) 2166168404Spjd (void) memmove(buf, path, buf + len - path); 2167219089Spjd 2168168404Spjd return (error); 2169168404Spjd} 2170219089Spjd 2171219089Spjdint 2172219089Spjdzfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) 2173219089Spjd{ 2174219089Spjd sa_attr_type_t *sa_table; 2175219089Spjd sa_handle_t *hdl; 2176219089Spjd dmu_buf_t *db; 2177219089Spjd int error; 2178219089Spjd 2179219089Spjd error = zfs_sa_setup(osp, &sa_table); 2180219089Spjd if (error != 0) 2181219089Spjd return (error); 2182219089Spjd 2183219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2184219089Spjd if (error != 0) 2185219089Spjd return (error); 2186219089Spjd 2187219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2188219089Spjd 2189219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2190219089Spjd return (error); 2191219089Spjd} 2192219089Spjd 2193219089Spjdint 2194219089Spjdzfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, 2195219089Spjd char *buf, int len) 2196219089Spjd{ 2197219089Spjd char *path = buf + len - 1; 2198219089Spjd sa_attr_type_t *sa_table; 2199219089Spjd sa_handle_t *hdl; 2200219089Spjd dmu_buf_t *db; 2201219089Spjd int error; 2202219089Spjd 2203219089Spjd *path = '\0'; 2204219089Spjd 2205219089Spjd error = zfs_sa_setup(osp, &sa_table); 2206219089Spjd if (error != 0) 2207219089Spjd return (error); 2208219089Spjd 2209219089Spjd error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); 2210219089Spjd if (error != 0) 2211219089Spjd return (error); 2212219089Spjd 2213219089Spjd error = zfs_obj_to_stats_impl(hdl, sa_table, sb); 2214219089Spjd if (error != 0) { 2215219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2216219089Spjd return (error); 2217219089Spjd } 2218219089Spjd 2219219089Spjd error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); 2220219089Spjd 2221219089Spjd zfs_release_sa_handle(hdl, db, FTAG); 2222219089Spjd return (error); 2223219089Spjd} 2224