zfs_fuid.c revision 1209a471b5681c43d839d4b890f708f500da7346
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * CDDL HEADER START
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * The contents of this file are subject to the terms of the
6925cc42fcfffef1cafe5a65944be35a27987b37cindi * Common Development and Distribution License (the "License").
6925cc42fcfffef1cafe5a65944be35a27987b37cindi * You may not use this file except in compliance with the License.
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
d9638e547d8811f2c689977f8dd2a353938b61fdmws * or http://www.opensolaris.org/os/licensing.
d9638e547d8811f2c689977f8dd2a353938b61fdmws * See the License for the specific language governing permissions
d9638e547d8811f2c689977f8dd2a353938b61fdmws * and limitations under the License.
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * When distributing Covered Code, include this CDDL HEADER in each
d9638e547d8811f2c689977f8dd2a353938b61fdmws * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
d9638e547d8811f2c689977f8dd2a353938b61fdmws * If applicable, add the following below this CDDL HEADER, with the
d9638e547d8811f2c689977f8dd2a353938b61fdmws * fields enclosed by brackets "[]" replaced with your own identifying
d9638e547d8811f2c689977f8dd2a353938b61fdmws * information: Portions Copyright [yyyy] [name of copyright owner]
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * CDDL HEADER END
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * Use is subject to license terms.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/zfs_context.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/sunddi.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/dmu.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/avl.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/zap.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/refcount.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/nvpair.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#ifdef _KERNEL
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/kidmap.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/sid.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/zfs_vfsops.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/zfs_znode.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws#endif
d9638e547d8811f2c689977f8dd2a353938b61fdmws#include <sys/zfs_fuid.h>
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * FUID Domain table(s).
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * The FUID table is stored as a packed nvlist of an array
d9638e547d8811f2c689977f8dd2a353938b61fdmws * of nvlists which contain an index, domain string and offset
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * During file system initialization the nvlist(s) are read and
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * two AVL trees are created. One tree is keyed by the index number
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * and the other by the domain string. Nodes are never removed from
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * trees, but new entries may be added. If a new entry is added then the
d9638e547d8811f2c689977f8dd2a353938b61fdmws * on-disk packed nvlist will also be updated.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws#define FUID_IDX "fuid_idx"
d9638e547d8811f2c689977f8dd2a353938b61fdmws#define FUID_DOMAIN "fuid_domain"
d9638e547d8811f2c689977f8dd2a353938b61fdmws#define FUID_OFFSET "fuid_offset"
d9638e547d8811f2c689977f8dd2a353938b61fdmws#define FUID_NVP_ARRAY "fuid_nvlist"
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmwstypedef struct fuid_domain {
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_node_t f_domnode;
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_node_t f_idxnode;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer ksiddomain_t *f_ksid;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer uint64_t f_idx;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer} fuid_domain_t;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremerstatic char *nulldomain = "";
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer/*
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * Compare two indexes.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsstatic int
d9638e547d8811f2c689977f8dd2a353938b61fdmwsidx_compare(const void *arg1, const void *arg2)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws const fuid_domain_t *node1 = arg1;
d9638e547d8811f2c689977f8dd2a353938b61fdmws const fuid_domain_t *node2 = arg2;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (node1->f_idx < node2->f_idx)
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (-1);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer else if (node1->f_idx > node2->f_idx)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer return (1);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer return (0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer * Compare two domain strings.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsstatic int
d9638e547d8811f2c689977f8dd2a353938b61fdmwsdomain_compare(const void *arg1, const void *arg2)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws const fuid_domain_t *node1 = arg1;
d9638e547d8811f2c689977f8dd2a353938b61fdmws const fuid_domain_t *node2 = arg2;
d9638e547d8811f2c689977f8dd2a353938b61fdmws int val;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer val = strcmp(node1->f_ksid->kd_name, node2->f_ksid->kd_name);
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (val == 0)
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (val > 0 ? 1 : -1);
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * load initial fuid domain and idx trees. This function is used by
d9638e547d8811f2c689977f8dd2a353938b61fdmws * both the kernel and zdb.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsuint64_t
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_table_load(objset_t *os, uint64_t fuid_obj, avl_tree_t *idx_tree,
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_tree_t *domain_tree)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer{
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer dmu_buf_t *db;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint64_t fuid_size;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_create(idx_tree, idx_compare,
d9638e547d8811f2c689977f8dd2a353938b61fdmws sizeof (fuid_domain_t), offsetof(fuid_domain_t, f_idxnode));
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_create(domain_tree, domain_compare,
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson sizeof (fuid_domain_t), offsetof(fuid_domain_t, f_domnode));
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson VERIFY(0 == dmu_bonus_hold(os, fuid_obj, FTAG, &db));
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson fuid_size = *(uint64_t *)db->db_data;
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson dmu_buf_rele(db, FTAG);
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (fuid_size) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws nvlist_t **fuidnvp;
d9638e547d8811f2c689977f8dd2a353938b61fdmws nvlist_t *nvp = NULL;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer uint_t count;
d9638e547d8811f2c689977f8dd2a353938b61fdmws char *packed;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer int i;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer packed = kmem_alloc(fuid_size, KM_SLEEP);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer VERIFY(dmu_read(os, fuid_obj, 0, fuid_size, packed) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer VERIFY(nvlist_unpack(packed, fuid_size,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer &nvp, 0) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer VERIFY(nvlist_lookup_nvlist_array(nvp, FUID_NVP_ARRAY,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer &fuidnvp, &count) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer for (i = 0; i != count; i++) {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer fuid_domain_t *domnode;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer char *domain;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer uint64_t idx;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer VERIFY(nvlist_lookup_string(fuidnvp[i], FUID_DOMAIN,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer &domain) == 0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(nvlist_lookup_uint64(fuidnvp[i], FUID_IDX,
d9638e547d8811f2c689977f8dd2a353938b61fdmws &idx) == 0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws domnode = kmem_alloc(sizeof (fuid_domain_t), KM_SLEEP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws domnode->f_idx = idx;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer domnode->f_ksid = ksid_lookupdomain(domain);
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_add(idx_tree, domnode);
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer avl_add(domain_tree, domnode);
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws nvlist_free(nvp);
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(packed, fuid_size);
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (fuid_size);
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremervoid
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremerzfs_fuid_table_destroy(avl_tree_t *idx_tree, avl_tree_t *domain_tree)
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer{
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer fuid_domain_t *domnode;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer void *cookie;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws cookie = NULL;
d9638e547d8811f2c689977f8dd2a353938b61fdmws while (domnode = avl_destroy_nodes(domain_tree, &cookie))
d9638e547d8811f2c689977f8dd2a353938b61fdmws ksiddomain_rele(domnode->f_ksid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_destroy(domain_tree);
d9638e547d8811f2c689977f8dd2a353938b61fdmws cookie = NULL;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer while (domnode = avl_destroy_nodes(idx_tree, &cookie))
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(domnode, sizeof (fuid_domain_t));
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer avl_destroy(idx_tree);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmwschar *
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_idx_domain(avl_tree_t *idx_tree, uint32_t idx)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid_domain_t searchnode, *findnode;
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_index_t loc;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws searchnode.f_idx = idx;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws findnode = avl_find(idx_tree, &searchnode, &loc);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (findnode ? findnode->f_ksid->kd_name : nulldomain);
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws#ifdef _KERNEL
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Load the fuid table(s) into memory.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsstatic void
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_init(zfsvfs_t *zfsvfs, dmu_tx_t *tx)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws int error = 0;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw_enter(&zfsvfs->z_fuid_lock, RW_WRITER);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (zfsvfs->z_fuid_loaded) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw_exit(&zfsvfs->z_fuid_lock);
d9638e547d8811f2c689977f8dd2a353938b61fdmws return;
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (zfsvfs->z_fuid_obj == 0) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws /* first make sure we need to allocate object */
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws error = zap_lookup(zfsvfs->z_os, MASTER_NODE_OBJ,
d9638e547d8811f2c689977f8dd2a353938b61fdmws ZFS_FUID_TABLES, 8, 1, &zfsvfs->z_fuid_obj);
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (error == ENOENT && tx != NULL) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfsvfs->z_fuid_obj = dmu_object_alloc(zfsvfs->z_os,
d9638e547d8811f2c689977f8dd2a353938b61fdmws DMU_OT_FUID, 1 << 14, DMU_OT_FUID_SIZE,
d9638e547d8811f2c689977f8dd2a353938b61fdmws sizeof (uint64_t), tx);
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(zap_add(zfsvfs->z_os, MASTER_NODE_OBJ,
d9638e547d8811f2c689977f8dd2a353938b61fdmws ZFS_FUID_TABLES, sizeof (uint64_t), 1,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer &zfsvfs->z_fuid_obj, tx) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer }
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (zfsvfs->z_fuid_obj != 0) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfsvfs->z_fuid_size = zfs_fuid_table_load(zfsvfs->z_os,
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfsvfs->z_fuid_obj, &zfsvfs->z_fuid_idx,
d9638e547d8811f2c689977f8dd2a353938b61fdmws &zfsvfs->z_fuid_domain);
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfsvfs->z_fuid_loaded = B_TRUE;
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer rw_exit(&zfsvfs->z_fuid_lock);
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer * Query domain table for a given domain.
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer *
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer * If domain isn't found it is added to AVL trees and
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer * the results are pushed out to disk.
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer */
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremerint
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremerzfs_fuid_find_by_domain(zfsvfs_t *zfsvfs, const char *domain, char **retdomain,
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer dmu_tx_t *tx)
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer{
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer fuid_domain_t searchnode, *findnode;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer avl_index_t loc;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer krw_t rw = RW_READER;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer /*
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer * If the dummy "nobody" domain then return an index of 0
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer * to cause the created FUID to be a standard POSIX id
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer * for the user nobody.
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer */
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer if (domain[0] == '\0') {
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer *retdomain = nulldomain;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer return (0);
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer }
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer searchnode.f_ksid = ksid_lookupdomain(domain);
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer if (retdomain) {
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer *retdomain = searchnode.f_ksid->kd_name;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer }
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer if (!zfsvfs->z_fuid_loaded)
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer zfs_fuid_init(zfsvfs, tx);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmwsretry:
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw_enter(&zfsvfs->z_fuid_lock, rw);
d9638e547d8811f2c689977f8dd2a353938b61fdmws findnode = avl_find(&zfsvfs->z_fuid_domain, &searchnode, &loc);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (findnode) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw_exit(&zfsvfs->z_fuid_lock);
d9638e547d8811f2c689977f8dd2a353938b61fdmws ksiddomain_rele(searchnode.f_ksid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (findnode->f_idx);
d9638e547d8811f2c689977f8dd2a353938b61fdmws } else {
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid_domain_t *domnode;
d9638e547d8811f2c689977f8dd2a353938b61fdmws nvlist_t *nvp;
d9638e547d8811f2c689977f8dd2a353938b61fdmws nvlist_t **fuids;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint64_t retidx;
d9638e547d8811f2c689977f8dd2a353938b61fdmws size_t nvsize = 0;
d9638e547d8811f2c689977f8dd2a353938b61fdmws char *packed;
d9638e547d8811f2c689977f8dd2a353938b61fdmws dmu_buf_t *db;
d9638e547d8811f2c689977f8dd2a353938b61fdmws int i = 0;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (rw == RW_READER && !rw_tryupgrade(&zfsvfs->z_fuid_lock)) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw_exit(&zfsvfs->z_fuid_lock);
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw = RW_WRITER;
d9638e547d8811f2c689977f8dd2a353938b61fdmws goto retry;
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws domnode = kmem_alloc(sizeof (fuid_domain_t), KM_SLEEP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws domnode->f_ksid = searchnode.f_ksid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer retidx = domnode->f_idx = avl_numnodes(&zfsvfs->z_fuid_idx) + 1;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_add(&zfsvfs->z_fuid_domain, domnode);
d9638e547d8811f2c689977f8dd2a353938b61fdmws avl_add(&zfsvfs->z_fuid_idx, domnode);
d9638e547d8811f2c689977f8dd2a353938b61fdmws /*
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * Now resync the on-disk nvlist.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer */
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer VERIFY(nvlist_alloc(&nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
d9638e547d8811f2c689977f8dd2a353938b61fdmws domnode = avl_first(&zfsvfs->z_fuid_domain);
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuids = kmem_alloc(retidx * sizeof (void *), KM_SLEEP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws while (domnode) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(nvlist_alloc(&fuids[i],
d9638e547d8811f2c689977f8dd2a353938b61fdmws NV_UNIQUE_NAME, KM_SLEEP) == 0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(nvlist_add_uint64(fuids[i], FUID_IDX,
d9638e547d8811f2c689977f8dd2a353938b61fdmws domnode->f_idx) == 0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(nvlist_add_uint64(fuids[i],
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer FUID_OFFSET, 0) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer VERIFY(nvlist_add_string(fuids[i++], FUID_DOMAIN,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer domnode->f_ksid->kd_name) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer domnode = AVL_NEXT(&zfsvfs->z_fuid_domain, domnode);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer VERIFY(nvlist_add_nvlist_array(nvp, FUID_NVP_ARRAY,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer fuids, retidx) == 0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws for (i = 0; i != retidx; i++)
d9638e547d8811f2c689977f8dd2a353938b61fdmws nvlist_free(fuids[i]);
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(fuids, retidx * sizeof (void *));
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(nvlist_size(nvp, &nvsize, NV_ENCODE_XDR) == 0);
d9638e547d8811f2c689977f8dd2a353938b61fdmws packed = kmem_alloc(nvsize, KM_SLEEP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(nvlist_pack(nvp, &packed, &nvsize,
d9638e547d8811f2c689977f8dd2a353938b61fdmws NV_ENCODE_XDR, KM_SLEEP) == 0);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer nvlist_free(nvp);
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfsvfs->z_fuid_size = nvsize;
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer dmu_write(zfsvfs->z_os, zfsvfs->z_fuid_obj, 0,
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfsvfs->z_fuid_size, packed, tx);
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(packed, zfsvfs->z_fuid_size);
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(0 == dmu_bonus_hold(zfsvfs->z_os, zfsvfs->z_fuid_obj,
d9638e547d8811f2c689977f8dd2a353938b61fdmws FTAG, &db));
d9638e547d8811f2c689977f8dd2a353938b61fdmws dmu_buf_will_dirty(db, tx);
d9638e547d8811f2c689977f8dd2a353938b61fdmws *(uint64_t *)db->db_data = zfsvfs->z_fuid_size;
d9638e547d8811f2c689977f8dd2a353938b61fdmws dmu_buf_rele(db, FTAG);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws rw_exit(&zfsvfs->z_fuid_lock);
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (retidx);
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Query domain table by index, returning domain string
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * Returns a pointer from an avl node of the domain string.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer *
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer */
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremerstatic char *
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremerzfs_fuid_find_by_idx(zfsvfs_t *zfsvfs, uint32_t idx)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer{
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer char *domain;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (idx == 0 || !zfsvfs->z_use_fuids)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer return (NULL);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (!zfsvfs->z_fuid_loaded)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer zfs_fuid_init(zfsvfs, NULL);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer rw_enter(&zfsvfs->z_fuid_lock, RW_READER);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (zfsvfs->z_fuid_obj)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer domain = zfs_fuid_idx_domain(&zfsvfs->z_fuid_idx, idx);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer else
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer domain = nulldomain;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer rw_exit(&zfsvfs->z_fuid_lock);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer ASSERT(domain);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer return (domain);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer}
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremervoid
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremerzfs_fuid_map_ids(znode_t *zp, cred_t *cr, uid_t *uidp, uid_t *gidp)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer{
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer *uidp = zfs_fuid_map_id(zp->z_zfsvfs, zp->z_phys->zp_uid,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer cr, ZFS_OWNER);
d9638e547d8811f2c689977f8dd2a353938b61fdmws *gidp = zfs_fuid_map_id(zp->z_zfsvfs, zp->z_phys->zp_gid,
d9638e547d8811f2c689977f8dd2a353938b61fdmws cr, ZFS_GROUP);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmwsuid_t
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_map_id(zfsvfs_t *zfsvfs, uint64_t fuid,
d9638e547d8811f2c689977f8dd2a353938b61fdmws cred_t *cr, zfs_fuid_type_t type)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint32_t index = FUID_INDEX(fuid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws char *domain;
6925cc42fcfffef1cafe5a65944be35a27987b37cindi uid_t id;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (index == 0)
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (fuid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer domain = zfs_fuid_find_by_idx(zfsvfs, index);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer ASSERT(domain != NULL);
6925cc42fcfffef1cafe5a65944be35a27987b37cindi
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (type == ZFS_OWNER || type == ZFS_ACE_USER) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws (void) kidmap_getuidbysid(crgetzone(cr), domain,
d9638e547d8811f2c689977f8dd2a353938b61fdmws FUID_RID(fuid), &id);
d9638e547d8811f2c689977f8dd2a353938b61fdmws } else {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer (void) kidmap_getgidbysid(crgetzone(cr), domain,
d9638e547d8811f2c689977f8dd2a353938b61fdmws FUID_RID(fuid), &id);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer }
6925cc42fcfffef1cafe5a65944be35a27987b37cindi return (id);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer}
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Add a FUID node to the list of fuid's being created for this
d9638e547d8811f2c689977f8dd2a353938b61fdmws * ACL
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * If ACL has multiple domains, then keep only one copy of each unique
d9638e547d8811f2c689977f8dd2a353938b61fdmws * domain.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsstatic void
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_node_add(zfs_fuid_info_t **fuidpp, const char *domain, uint32_t rid,
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint64_t idx, uint64_t id, zfs_fuid_type_t type)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_t *fuid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_domain_t *fuid_domain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_info_t *fuidp;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint64_t fuididx;
d9638e547d8811f2c689977f8dd2a353938b61fdmws boolean_t found = B_FALSE;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (*fuidpp == NULL)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer *fuidpp = zfs_fuid_info_alloc();
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuidp = *fuidpp;
d9638e547d8811f2c689977f8dd2a353938b61fdmws /*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * First find fuid domain index in linked list
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * If one isn't found then create an entry.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws for (fuididx = 1, fuid_domain = list_head(&fuidp->z_domains);
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid_domain; fuid_domain = list_next(&fuidp->z_domains,
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid_domain), fuididx++) {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (idx == fuid_domain->z_domidx) {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer found = B_TRUE;
d9638e547d8811f2c689977f8dd2a353938b61fdmws break;
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson }
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson }
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (!found) {
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson fuid_domain = kmem_alloc(sizeof (zfs_fuid_domain_t), KM_SLEEP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid_domain->z_domain = domain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid_domain->z_domidx = idx;
d9638e547d8811f2c689977f8dd2a353938b61fdmws list_insert_tail(&fuidp->z_domains, fuid_domain);
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuidp->z_domain_str_sz += strlen(domain) + 1;
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuidp->z_domain_cnt++;
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (type == ZFS_ACE_USER || type == ZFS_ACE_GROUP) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws /*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Now allocate fuid entry and add it on the end of the list
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid->z_id = id;
6925cc42fcfffef1cafe5a65944be35a27987b37cindi fuid->z_domidx = idx;
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuid->z_logfuid = FUID_ENCODE(fuididx, rid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws list_insert_tail(&fuidp->z_fuids, fuid);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer fuidp->z_fuid_cnt++;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer } else {
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (type == ZFS_OWNER)
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuidp->z_fuid_owner = FUID_ENCODE(fuididx, rid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws else
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuidp->z_fuid_group = FUID_ENCODE(fuididx, rid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Create a file system FUID, based on information in the users cred
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsuint64_t
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_create_cred(zfsvfs_t *zfsvfs, zfs_fuid_type_t type,
d9638e547d8811f2c689977f8dd2a353938b61fdmws dmu_tx_t *tx, cred_t *cr, zfs_fuid_info_t **fuidp)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer{
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint64_t idx;
d9638e547d8811f2c689977f8dd2a353938b61fdmws ksid_t *ksid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint32_t rid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws char *kdomain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws const char *domain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uid_t id;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws VERIFY(type == ZFS_OWNER || type == ZFS_GROUP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws ksid = crgetsid(cr, (type == ZFS_OWNER) ? KSID_OWNER : KSID_GROUP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (ksid) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws id = ksid_getid(ksid);
6925cc42fcfffef1cafe5a65944be35a27987b37cindi } else {
6925cc42fcfffef1cafe5a65944be35a27987b37cindi if (type == ZFS_OWNER)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer id = crgetuid(cr);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer else
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer id = crgetgid(cr);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer }
d9638e547d8811f2c689977f8dd2a353938b61fdmws
af9cbda568b929fc35782877e1d8bb0c2a856802James Kremer if (!zfsvfs->z_use_fuids || (!IS_EPHEMERAL(id)))
d9638e547d8811f2c689977f8dd2a353938b61fdmws return ((uint64_t)id);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
6925cc42fcfffef1cafe5a65944be35a27987b37cindi rid = ksid_getrid(ksid);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer domain = ksid_getdomain(ksid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer idx = zfs_fuid_find_by_domain(zfsvfs, domain, &kdomain, tx);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_node_add(fuidp, kdomain, rid, idx, id, type);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (FUID_ENCODE(idx, rid));
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Create a file system FUID for an ACL ace
d9638e547d8811f2c689977f8dd2a353938b61fdmws * or a chown/chgrp of the file.
d9638e547d8811f2c689977f8dd2a353938b61fdmws * This is similar to zfs_fuid_create_cred, except that
d9638e547d8811f2c689977f8dd2a353938b61fdmws * we can't find the domain + rid information in the
d9638e547d8811f2c689977f8dd2a353938b61fdmws * cred. Instead we have to query Winchester for the
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer * domain and rid.
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer *
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer * During replay operations the domain+rid information is
d9638e547d8811f2c689977f8dd2a353938b61fdmws * found in the zfs_fuid_info_t that the replay code has
d9638e547d8811f2c689977f8dd2a353938b61fdmws * attached to the zfsvfs of the file system.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremeruint64_t
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_create(zfsvfs_t *zfsvfs, uint64_t id, cred_t *cr,
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_type_t type, dmu_tx_t *tx, zfs_fuid_info_t **fuidpp)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer const char *domain;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer char *kdomain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint32_t fuid_idx = FUID_INDEX(id);
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint32_t rid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws idmap_stat status;
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint64_t idx;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer zfs_fuid_t *zfuid = NULL;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer zfs_fuid_info_t *fuidp;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws /*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * If POSIX ID, or entry is already a FUID then
d9638e547d8811f2c689977f8dd2a353938b61fdmws * just return the id
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * We may also be handed an already FUID'ized id via
d9638e547d8811f2c689977f8dd2a353938b61fdmws * chmod.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (!zfsvfs->z_use_fuids || !IS_EPHEMERAL(id) || fuid_idx != 0)
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (id);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (zfsvfs->z_replay) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws fuidp = zfsvfs->z_fuid_replay;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws /*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * If we are passed an ephemeral id, but no
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * fuid_info was logged then return NOBODY.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * This is most likely a result of idmap service
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * not being available.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (fuidp == NULL)
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (UID_NOBODY);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws switch (type) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws case ZFS_ACE_USER:
d9638e547d8811f2c689977f8dd2a353938b61fdmws case ZFS_ACE_GROUP:
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfuid = list_head(&fuidp->z_fuids);
d9638e547d8811f2c689977f8dd2a353938b61fdmws rid = FUID_RID(zfuid->z_logfuid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws idx = FUID_INDEX(zfuid->z_logfuid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws break;
d9638e547d8811f2c689977f8dd2a353938b61fdmws case ZFS_OWNER:
d9638e547d8811f2c689977f8dd2a353938b61fdmws rid = FUID_RID(fuidp->z_fuid_owner);
d9638e547d8811f2c689977f8dd2a353938b61fdmws idx = FUID_INDEX(fuidp->z_fuid_owner);
d9638e547d8811f2c689977f8dd2a353938b61fdmws break;
d9638e547d8811f2c689977f8dd2a353938b61fdmws case ZFS_GROUP:
d9638e547d8811f2c689977f8dd2a353938b61fdmws rid = FUID_RID(fuidp->z_fuid_group);
d9638e547d8811f2c689977f8dd2a353938b61fdmws idx = FUID_INDEX(fuidp->z_fuid_group);
d9638e547d8811f2c689977f8dd2a353938b61fdmws break;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer };
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer domain = fuidp->z_domain_table[idx -1];
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer } else {
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (type == ZFS_OWNER || type == ZFS_ACE_USER)
d9638e547d8811f2c689977f8dd2a353938b61fdmws status = kidmap_getsidbyuid(crgetzone(cr), id,
d9638e547d8811f2c689977f8dd2a353938b61fdmws &domain, &rid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws else
d9638e547d8811f2c689977f8dd2a353938b61fdmws status = kidmap_getsidbygid(crgetzone(cr), id,
d9638e547d8811f2c689977f8dd2a353938b61fdmws &domain, &rid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (status != 0) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws /*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * When returning nobody we will need to
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * make a dummy fuid table entry for logging
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * purposes.
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer */
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer rid = UID_NOBODY;
d9638e547d8811f2c689977f8dd2a353938b61fdmws domain = nulldomain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer idx = zfs_fuid_find_by_domain(zfsvfs, domain, &kdomain, tx);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (!zfsvfs->z_replay)
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_node_add(fuidpp, kdomain, rid, idx, id, type);
d9638e547d8811f2c689977f8dd2a353938b61fdmws else if (zfuid != NULL) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws list_remove(&fuidp->z_fuids, zfuid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(zfuid, sizeof (zfs_fuid_t));
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer return (FUID_ENCODE(idx, rid));
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmwsvoid
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_destroy(zfsvfs_t *zfsvfs)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer{
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer rw_enter(&zfsvfs->z_fuid_lock, RW_WRITER);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer if (!zfsvfs->z_fuid_loaded) {
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer rw_exit(&zfsvfs->z_fuid_lock);
d9638e547d8811f2c689977f8dd2a353938b61fdmws return;
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson }
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson zfs_fuid_table_destroy(&zfsvfs->z_fuid_idx, &zfsvfs->z_fuid_domain);
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson rw_exit(&zfsvfs->z_fuid_lock);
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson}
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer/*
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer * Allocate zfs_fuid_info for tracking FUIDs created during
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer * zfs_mknode, VOP_SETATTR() or VOP_SETSECATTR()
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson */
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hansonzfs_fuid_info_t *
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hansonzfs_fuid_info_alloc(void)
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson{
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson zfs_fuid_info_t *fuidp;
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson fuidp = kmem_zalloc(sizeof (zfs_fuid_info_t), KM_SLEEP);
cbf75e67acb6c32a2f4884f28a839d59f7988d37Stephen Hanson list_create(&fuidp->z_domains, sizeof (zfs_fuid_domain_t),
d9638e547d8811f2c689977f8dd2a353938b61fdmws offsetof(zfs_fuid_domain_t, z_next));
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer list_create(&fuidp->z_fuids, sizeof (zfs_fuid_t),
d9638e547d8811f2c689977f8dd2a353938b61fdmws offsetof(zfs_fuid_t, z_next));
d9638e547d8811f2c689977f8dd2a353938b61fdmws return (fuidp);
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Release all memory associated with zfs_fuid_info_t
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
d9638e547d8811f2c689977f8dd2a353938b61fdmwsvoid
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_fuid_info_free(zfs_fuid_info_t *fuidp)
d9638e547d8811f2c689977f8dd2a353938b61fdmws{
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_t *zfuid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws zfs_fuid_domain_t *zdomain;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws while ((zfuid = list_head(&fuidp->z_fuids)) != NULL) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws list_remove(&fuidp->z_fuids, zfuid);
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(zfuid, sizeof (zfs_fuid_t));
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
d9638e547d8811f2c689977f8dd2a353938b61fdmws
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (fuidp->z_domain_table != NULL)
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer kmem_free(fuidp->z_domain_table,
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer (sizeof (char **)) * fuidp->z_domain_cnt);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer while ((zdomain = list_head(&fuidp->z_domains)) != NULL) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws list_remove(&fuidp->z_domains, zdomain);
d9638e547d8811f2c689977f8dd2a353938b61fdmws kmem_free(zdomain, sizeof (zfs_fuid_domain_t));
d9638e547d8811f2c689977f8dd2a353938b61fdmws }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer kmem_free(fuidp, sizeof (zfs_fuid_info_t));
d9638e547d8811f2c689977f8dd2a353938b61fdmws}
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws/*
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * Check to see if id is a groupmember. If cred
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * has ksid info then sidlist is checked first
d9638e547d8811f2c689977f8dd2a353938b61fdmws * and if still not found then POSIX groups are checked
d9638e547d8811f2c689977f8dd2a353938b61fdmws *
d9638e547d8811f2c689977f8dd2a353938b61fdmws * Will use a straight FUID compare when possible.
d9638e547d8811f2c689977f8dd2a353938b61fdmws */
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremerboolean_t
d9638e547d8811f2c689977f8dd2a353938b61fdmwszfs_groupmember(zfsvfs_t *zfsvfs, uint64_t id, cred_t *cr)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer{
d9638e547d8811f2c689977f8dd2a353938b61fdmws ksid_t *ksid = crgetsid(cr, KSID_GROUP);
d9638e547d8811f2c689977f8dd2a353938b61fdmws uid_t gid;
d9638e547d8811f2c689977f8dd2a353938b61fdmws
d9638e547d8811f2c689977f8dd2a353938b61fdmws if (ksid) {
d9638e547d8811f2c689977f8dd2a353938b61fdmws int i;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer ksid_t *ksid_groups;
d9638e547d8811f2c689977f8dd2a353938b61fdmws ksidlist_t *ksidlist = crgetsidlist(cr);
d9638e547d8811f2c689977f8dd2a353938b61fdmws uint32_t idx = FUID_INDEX(id);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer uint32_t rid = FUID_RID(id);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer ASSERT(ksidlist);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer ksid_groups = ksidlist->ksl_sids;
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer for (i = 0; i != ksidlist->ksl_nsid; i++) {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (idx == 0) {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer if (id != IDMAP_WK_CREATOR_GROUP_GID &&
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer id == ksid_groups[i].ks_id) {
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer return (B_TRUE);
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer } else {
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer char *domain;
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer domain = zfs_fuid_find_by_idx(zfsvfs, idx);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer ASSERT(domain != NULL);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer if (strcmp(domain,
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer IDMAP_WK_CREATOR_SID_AUTHORITY) == 0)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer return (B_FALSE);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer if ((strcmp(domain,
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer ksid_groups[i].ks_domain->kd_name) == 0) &&
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer rid == ksid_groups[i].ks_rid)
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer return (B_TRUE);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer }
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer }
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer }
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer /*
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer * Not found in ksidlist, check posix groups
b5875ddd9f650174db2616fc7cc262d30eb77bf0James Kremer */
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer gid = zfs_fuid_map_id(zfsvfs, id, cr, ZFS_GROUP);
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer return (groupmember(gid, cr));
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer}
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer#endif
dc8f2b859f821ae6843b73f65d2468778f15cdbaJames Kremer