diff options
Diffstat (limited to 'zfs/lib/libdmu-ctl/zfs_ioctl.c')
| -rw-r--r-- | zfs/lib/libdmu-ctl/zfs_ioctl.c | 3055 |
1 files changed, 0 insertions, 3055 deletions
diff --git a/zfs/lib/libdmu-ctl/zfs_ioctl.c b/zfs/lib/libdmu-ctl/zfs_ioctl.c deleted file mode 100644 index e4d253474..000000000 --- a/zfs/lib/libdmu-ctl/zfs_ioctl.c +++ /dev/null @@ -1,3055 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#pragma ident "@(#)zfs_ioctl.c 1.61 08/04/27 SMI" - -#include <sys/types.h> -#include <sys/param.h> -#include <sys/errno.h> -#include <sys/uio.h> -#include <sys/buf.h> -#include <sys/modctl.h> -#include <sys/open.h> -#include <sys/file.h> -#include <sys/kmem.h> -#include <sys/conf.h> -#include <sys/cmn_err.h> -#include <sys/stat.h> -#include <sys/zfs_ioctl.h> -#include <sys/zfs_znode.h> -#include <sys/zap.h> -#include <sys/spa.h> -#include <sys/spa_impl.h> -#include <sys/vdev.h> -#include <sys/vdev_impl.h> -#include <sys/dmu.h> -#include <sys/dsl_dir.h> -#include <sys/dsl_dataset.h> -#include <sys/dsl_prop.h> -#include <sys/dsl_deleg.h> -#include <sys/dmu_objset.h> -#include <sys/ddi.h> -#include <sys/sunddi.h> -#include <sys/sunldi.h> -#include <sys/policy.h> -#include <sys/zone.h> -#include <sys/nvpair.h> -#include <sys/pathname.h> -#include <sys/mount.h> -#include <sys/sdt.h> -#include <sys/fs/zfs.h> -#include <sys/zfs_ctldir.h> -#include <sys/zfs_dir.h> -#include <sys/zvol.h> -#include <sharefs/share.h> -#include <sys/dmu_objset.h> - -#include "zfs_namecheck.h" -#include "zfs_prop.h" -#include "zfs_deleg.h" - -extern struct modlfs zfs_modlfs; - -extern void zfs_init(void); -extern void zfs_fini(void); - -ldi_ident_t zfs_li = NULL; -dev_info_t *zfs_dip; - -typedef int zfs_ioc_func_t(zfs_cmd_t *); -typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); - -typedef struct zfs_ioc_vec { - zfs_ioc_func_t *zvec_func; - zfs_secpolicy_func_t *zvec_secpolicy; - enum { - NO_NAME, - POOL_NAME, - DATASET_NAME - } zvec_namecheck; - boolean_t zvec_his_log; -} zfs_ioc_vec_t; - -/* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ -void -__dprintf(const char *file, const char *func, int line, const char *fmt, ...) -{ - const char *newfile; - char buf[256]; - va_list adx; - - /* - * Get rid of annoying "../common/" prefix to filename. - */ - newfile = strrchr(file, '/'); - if (newfile != NULL) { - newfile = newfile + 1; /* Get rid of leading / */ - } else { - newfile = file; - } - - va_start(adx, fmt); - (void) vsnprintf(buf, sizeof (buf), fmt, adx); - va_end(adx); - - /* - * To get this data, use the zfs-dprintf probe as so: - * dtrace -q -n 'zfs-dprintf \ - * /stringof(arg0) == "dbuf.c"/ \ - * {printf("%s: %s", stringof(arg1), stringof(arg3))}' - * arg0 = file name - * arg1 = function name - * arg2 = line number - * arg3 = message - */ - DTRACE_PROBE4(zfs__dprintf, - char *, newfile, char *, func, int, line, char *, buf); -} - -static void -history_str_free(char *buf) -{ - kmem_free(buf, HIS_MAX_RECORD_LEN); -} - -static char * -history_str_get(zfs_cmd_t *zc) -{ - char *buf; - - if (zc->zc_history == NULL) - return (NULL); - - buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); - if (copyinstr((void *)(uintptr_t)zc->zc_history, - buf, HIS_MAX_RECORD_LEN, NULL) != 0) { - history_str_free(buf); - return (NULL); - } - - buf[HIS_MAX_RECORD_LEN -1] = '\0'; - - return (buf); -} - -/* - * zfs_check_version - * - * Return non-zero if the spa version is less than requested version. - */ -static int -zfs_check_version(const char *name, int version) -{ - - spa_t *spa; - - if (spa_open(name, &spa, FTAG) == 0) { - if (spa_version(spa) < version) { - spa_close(spa, FTAG); - return (1); - } - spa_close(spa, FTAG); - } - return (0); -} - -/* - * zpl_check_version - * - * Return non-zero if the ZPL version is less than requested version. - */ -static int -zpl_check_version(const char *name, int version) -{ - objset_t *os; - int rc = 1; - - if (dmu_objset_open(name, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY, &os) == 0) { - uint64_t propversion; - - if (zfs_get_zplprop(os, ZFS_PROP_VERSION, - &propversion) == 0) { - rc = !(propversion >= version); - } - dmu_objset_close(os); - } - return (rc); -} - -static void -zfs_log_history(zfs_cmd_t *zc) -{ - spa_t *spa; - char *buf; - - if ((buf = history_str_get(zc)) == NULL) - return; - - if (spa_open(zc->zc_name, &spa, FTAG) == 0) { - if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) - (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); - spa_close(spa, FTAG); - } - history_str_free(buf); -} - -/* - * Policy for top-level read operations (list pools). Requires no privileges, - * and can be used in the local zone, as there is no associated dataset. - */ -/* ARGSUSED */ -static int -zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) -{ - return (0); -} - -/* - * Policy for dataset read operations (list children, get statistics). Requires - * no privileges, but must be visible in the local zone. - */ -/* ARGSUSED */ -static int -zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) -{ - if (INGLOBALZONE(curproc) || - zone_dataset_visible(zc->zc_name, NULL)) - return (0); - - return (ENOENT); -} - -static int -zfs_dozonecheck(const char *dataset, cred_t *cr) -{ - uint64_t zoned; - int writable = 1; - - /* - * The dataset must be visible by this zone -- check this first - * so they don't see EPERM on something they shouldn't know about. - */ - if (!INGLOBALZONE(curproc) && - !zone_dataset_visible(dataset, &writable)) - return (ENOENT); - - if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) - return (ENOENT); - - if (INGLOBALZONE(curproc)) { - /* - * If the fs is zoned, only root can access it from the - * global zone. - */ - if (secpolicy_zfs(cr) && zoned) - return (EPERM); - } else { - /* - * If we are in a local zone, the 'zoned' property must be set. - */ - if (!zoned) - return (EPERM); - - /* must be writable by this zone */ - if (!writable) - return (EPERM); - } - return (0); -} - -int -zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) -{ - int error; - - error = zfs_dozonecheck(name, cr); - if (error == 0) { - error = secpolicy_zfs(cr); - if (error) - error = dsl_deleg_access(name, perm, cr); - } - return (error); -} - -static int -zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) -{ - /* - * Check permissions for special properties. - */ - switch (prop) { - case ZFS_PROP_ZONED: - /* - * Disallow setting of 'zoned' from within a local zone. - */ - if (!INGLOBALZONE(curproc)) - return (EPERM); - break; - - case ZFS_PROP_QUOTA: - if (!INGLOBALZONE(curproc)) { - uint64_t zoned; - char setpoint[MAXNAMELEN]; - /* - * Unprivileged users are allowed to modify the - * quota on things *under* (ie. contained by) - * the thing they own. - */ - if (dsl_prop_get_integer(name, "zoned", &zoned, - setpoint)) - return (EPERM); - if (!zoned || strlen(name) <= strlen(setpoint)) - return (EPERM); - } - break; - } - - return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); -} - -int -zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) -{ - int error; - - error = zfs_dozonecheck(zc->zc_name, cr); - if (error) - return (error); - - /* - * permission to set permissions will be evaluated later in - * dsl_deleg_can_allow() - */ - return (0); -} - -int -zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) -{ - int error; - error = zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_ROLLBACK, cr); - if (error == 0) - error = zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_MOUNT, cr); - return (error); -} - -int -zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) -{ - return (zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_SEND, cr)); -} - -int -zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) -{ - if (!INGLOBALZONE(curproc)) - return (EPERM); - - if (secpolicy_nfs(cr) == 0) { - return (0); - } else { - vnode_t *vp; - int error; - - if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, - NO_FOLLOW, NULL, &vp)) != 0) - return (error); - - /* Now make sure mntpnt and dataset are ZFS */ - - if (vp->v_vfsp->vfs_fstype != zfsfstype || - (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), - zc->zc_name) != 0)) { - VN_RELE(vp); - return (EPERM); - } - - VN_RELE(vp); - return (dsl_deleg_access(zc->zc_name, - ZFS_DELEG_PERM_SHARE, cr)); - } -} - -static int -zfs_get_parent(const char *datasetname, char *parent, int parentsize) -{ - char *cp; - - /* - * Remove the @bla or /bla from the end of the name to get the parent. - */ - (void) strncpy(parent, datasetname, parentsize); - cp = strrchr(parent, '@'); - if (cp != NULL) { - cp[0] = '\0'; - } else { - cp = strrchr(parent, '/'); - if (cp == NULL) - return (ENOENT); - cp[0] = '\0'; - } - - return (0); -} - -int -zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) -{ - int error; - - if ((error = zfs_secpolicy_write_perms(name, - ZFS_DELEG_PERM_MOUNT, cr)) != 0) - return (error); - - return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); -} - -static int -zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) -{ - return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); -} - -/* - * Must have sys_config privilege to check the iscsi permission - */ -/* ARGSUSED */ -static int -zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) -{ - return (secpolicy_zfs(cr)); -} - -int -zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) -{ - char parentname[MAXNAMELEN]; - int error; - - if ((error = zfs_secpolicy_write_perms(from, - ZFS_DELEG_PERM_RENAME, cr)) != 0) - return (error); - - if ((error = zfs_secpolicy_write_perms(from, - ZFS_DELEG_PERM_MOUNT, cr)) != 0) - return (error); - - if ((error = zfs_get_parent(to, parentname, - sizeof (parentname))) != 0) - return (error); - - if ((error = zfs_secpolicy_write_perms(parentname, - ZFS_DELEG_PERM_CREATE, cr)) != 0) - return (error); - - if ((error = zfs_secpolicy_write_perms(parentname, - ZFS_DELEG_PERM_MOUNT, cr)) != 0) - return (error); - - return (error); -} - -static int -zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) -{ - return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); -} - -static int -zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) -{ - char parentname[MAXNAMELEN]; - objset_t *clone; - int error; - - error = zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_PROMOTE, cr); - if (error) - return (error); - - error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY, &clone); - - if (error == 0) { - dsl_dataset_t *pclone = NULL; - dsl_dir_t *dd; - dd = clone->os->os_dsl_dataset->ds_dir; - - rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); - error = dsl_dataset_open_obj(dd->dd_pool, - dd->dd_phys->dd_origin_obj, NULL, - DS_MODE_NONE, FTAG, &pclone); - rw_exit(&dd->dd_pool->dp_config_rwlock); - if (error) { - dmu_objset_close(clone); - return (error); - } - - error = zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_MOUNT, cr); - - dsl_dataset_name(pclone, parentname); - dmu_objset_close(clone); - dsl_dataset_close(pclone, DS_MODE_NONE, FTAG); - if (error == 0) - error = zfs_secpolicy_write_perms(parentname, - ZFS_DELEG_PERM_PROMOTE, cr); - } - return (error); -} - -static int -zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) -{ - int error; - - if ((error = zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_RECEIVE, cr)) != 0) - return (error); - - if ((error = zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_MOUNT, cr)) != 0) - return (error); - - return (zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_CREATE, cr)); -} - -int -zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) -{ - int error; - - if ((error = zfs_secpolicy_write_perms(name, - ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) - return (error); - - error = zfs_secpolicy_write_perms(name, - ZFS_DELEG_PERM_MOUNT, cr); - - return (error); -} - -static int -zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) -{ - - return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); -} - -static int -zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) -{ - char parentname[MAXNAMELEN]; - int error; - - if ((error = zfs_get_parent(zc->zc_name, parentname, - sizeof (parentname))) != 0) - return (error); - - if (zc->zc_value[0] != '\0') { - if ((error = zfs_secpolicy_write_perms(zc->zc_value, - ZFS_DELEG_PERM_CLONE, cr)) != 0) - return (error); - } - - if ((error = zfs_secpolicy_write_perms(parentname, - ZFS_DELEG_PERM_CREATE, cr)) != 0) - return (error); - - error = zfs_secpolicy_write_perms(parentname, - ZFS_DELEG_PERM_MOUNT, cr); - - return (error); -} - -static int -zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) -{ - int error; - - error = secpolicy_fs_unmount(cr, NULL); - if (error) { - error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); - } - return (error); -} - -/* - * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires - * SYS_CONFIG privilege, which is not available in a local zone. - */ -/* ARGSUSED */ -static int -zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) -{ - if (secpolicy_sys_config(cr, B_FALSE) != 0) - return (EPERM); - - return (0); -} - -/* - * Just like zfs_secpolicy_config, except that we will check for - * mount permission on the dataset for permission to create/remove - * the minor nodes. - */ -static int -zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) -{ - if (secpolicy_sys_config(cr, B_FALSE) != 0) { - return (dsl_deleg_access(zc->zc_name, - ZFS_DELEG_PERM_MOUNT, cr)); - } - - return (0); -} - -/* - * Policy for fault injection. Requires all privileges. - */ -/* ARGSUSED */ -static int -zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) -{ - return (secpolicy_zinject(cr)); -} - -static int -zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) -{ - zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); - - if (prop == ZPROP_INVAL) { - if (!zfs_prop_user(zc->zc_value)) - return (EINVAL); - return (zfs_secpolicy_write_perms(zc->zc_name, - ZFS_DELEG_PERM_USERPROP, cr)); - } else { - if (!zfs_prop_inheritable(prop)) - return (EINVAL); - return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); - } -} - -/* - * Returns the nvlist as specified by the user in the zfs_cmd_t. - */ -static int -get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) -{ - char *packed; - int error; - nvlist_t *list = NULL; - - /* - * Read in and unpack the user-supplied nvlist. - */ - if (size == 0) - return (EINVAL); - - packed = kmem_alloc(size, KM_SLEEP); - - if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { - kmem_free(packed, size); - return (error); - } - - if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { - kmem_free(packed, size); - return (error); - } - - kmem_free(packed, size); - - *nvp = list; - return (0); -} - -static int -put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) -{ - char *packed = NULL; - size_t size; - int error; - - VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); - - if (size > zc->zc_nvlist_dst_size) { - error = ENOMEM; - } else { - packed = kmem_alloc(size, KM_SLEEP); - VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, - KM_SLEEP) == 0); - error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, - size); - kmem_free(packed, size); - } - - zc->zc_nvlist_dst_size = size; - return (error); -} - -static int -zfs_ioc_pool_create(zfs_cmd_t *zc) -{ - int error; - nvlist_t *config, *props = NULL; - char *buf; - - if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, - &config)) - return (error); - - if (zc->zc_nvlist_src_size != 0 && (error = - get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { - nvlist_free(config); - return (error); - } - - buf = history_str_get(zc); - - error = spa_create(zc->zc_name, config, props, buf); - - if (buf != NULL) - history_str_free(buf); - - nvlist_free(config); - - if (props) - nvlist_free(props); - - return (error); -} - -static int -zfs_ioc_pool_destroy(zfs_cmd_t *zc) -{ - int error; - zfs_log_history(zc); - error = spa_destroy(zc->zc_name); - return (error); -} - -static int -zfs_ioc_pool_import(zfs_cmd_t *zc) -{ - int error; - nvlist_t *config, *props = NULL; - uint64_t guid; - - if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, - &config)) != 0) - return (error); - - if (zc->zc_nvlist_src_size != 0 && (error = - get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { - nvlist_free(config); - return (error); - } - - if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || - guid != zc->zc_guid) - error = EINVAL; - else - error = spa_import(zc->zc_name, config, props); - - nvlist_free(config); - - if (props) - nvlist_free(props); - - return (error); -} - -static int -zfs_ioc_pool_export(zfs_cmd_t *zc) -{ - int error; - zfs_log_history(zc); - error = spa_export(zc->zc_name, NULL); - return (error); -} - -static int -zfs_ioc_pool_configs(zfs_cmd_t *zc) -{ - nvlist_t *configs; - int error; - - if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) - return (EEXIST); - - error = put_nvlist(zc, configs); - - nvlist_free(configs); - - return (error); -} - -static int -zfs_ioc_pool_stats(zfs_cmd_t *zc) -{ - nvlist_t *config; - int error; - int ret = 0; - - error = spa_get_stats(zc->zc_name, &config, zc->zc_value, - sizeof (zc->zc_value)); - - if (config != NULL) { - ret = put_nvlist(zc, config); - nvlist_free(config); - - /* - * The config may be present even if 'error' is non-zero. - * In this case we return success, and preserve the real errno - * in 'zc_cookie'. - */ - zc->zc_cookie = error; - } else { - ret = error; - } - - return (ret); -} - -/* - * Try to import the given pool, returning pool stats as appropriate so that - * user land knows which devices are available and overall pool health. - */ -static int -zfs_ioc_pool_tryimport(zfs_cmd_t *zc) -{ - nvlist_t *tryconfig, *config; - int error; - - if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, - &tryconfig)) != 0) - return (error); - - config = spa_tryimport(tryconfig); - - nvlist_free(tryconfig); - - if (config == NULL) - return (EINVAL); - - error = put_nvlist(zc, config); - nvlist_free(config); - - return (error); -} - -static int -zfs_ioc_pool_scrub(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - mutex_enter(&spa_namespace_lock); - error = spa_scrub(spa, zc->zc_cookie, B_FALSE); - mutex_exit(&spa_namespace_lock); - - spa_close(spa, FTAG); - - return (error); -} - -static int -zfs_ioc_pool_freeze(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - - error = spa_open(zc->zc_name, &spa, FTAG); - if (error == 0) { - spa_freeze(spa); - spa_close(spa, FTAG); - } - return (error); -} - -static int -zfs_ioc_pool_upgrade(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { - spa_close(spa, FTAG); - return (EINVAL); - } - - spa_upgrade(spa, zc->zc_cookie); - spa_close(spa, FTAG); - - return (error); -} - -static int -zfs_ioc_pool_get_history(zfs_cmd_t *zc) -{ - spa_t *spa; - char *hist_buf; - uint64_t size; - int error; - - if ((size = zc->zc_history_len) == 0) - return (EINVAL); - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { - spa_close(spa, FTAG); - return (ENOTSUP); - } - - hist_buf = kmem_alloc(size, KM_SLEEP); - if ((error = spa_history_get(spa, &zc->zc_history_offset, - &zc->zc_history_len, hist_buf)) == 0) { - error = xcopyout(hist_buf, - (char *)(uintptr_t)zc->zc_history, - zc->zc_history_len); - } - - spa_close(spa, FTAG); - kmem_free(hist_buf, size); - return (error); -} - -static int -zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) -{ - int error; - - if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) - return (error); - - return (0); -} - -static int -zfs_ioc_obj_to_path(zfs_cmd_t *zc) -{ - objset_t *osp; - int error; - - if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, - DS_MODE_NONE | DS_MODE_READONLY, &osp)) != 0) - return (error); - - error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, - sizeof (zc->zc_value)); - dmu_objset_close(osp); - - return (error); -} - -static int -zfs_ioc_vdev_add(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - nvlist_t *config, **l2cache, **spares; - uint_t nl2cache = 0, nspares = 0; - - error = spa_open(zc->zc_name, &spa, FTAG); - if (error != 0) - return (error); - - error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, - &config); - (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, - &l2cache, &nl2cache); - - (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, - &spares, &nspares); - - /* - * A root pool with concatenated devices is not supported. - * Thus, can not add a device to a root pool. - * - * Intent log device can not be added to a rootpool because - * during mountroot, zil is replayed, a seperated log device - * can not be accessed during the mountroot time. - * - * l2cache and spare devices are ok to be added to a rootpool. - */ - if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { - spa_close(spa, FTAG); - return (EDOM); - } - - if (error == 0) { - error = spa_vdev_add(spa, config); - nvlist_free(config); - } - spa_close(spa, FTAG); - return (error); -} - -static int -zfs_ioc_vdev_remove(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - - error = spa_open(zc->zc_name, &spa, FTAG); - if (error != 0) - return (error); - error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); - spa_close(spa, FTAG); - return (error); -} - -static int -zfs_ioc_vdev_set_state(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - vdev_state_t newstate = VDEV_STATE_UNKNOWN; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - switch (zc->zc_cookie) { - case VDEV_STATE_ONLINE: - error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); - break; - - case VDEV_STATE_OFFLINE: - error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); - break; - - case VDEV_STATE_FAULTED: - error = vdev_fault(spa, zc->zc_guid); - break; - - case VDEV_STATE_DEGRADED: - error = vdev_degrade(spa, zc->zc_guid); - break; - - default: - error = EINVAL; - } - zc->zc_cookie = newstate; - spa_close(spa, FTAG); - return (error); -} - -static int -zfs_ioc_vdev_attach(zfs_cmd_t *zc) -{ - spa_t *spa; - int replacing = zc->zc_cookie; - nvlist_t *config; - int error; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, - &config)) == 0) { - error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); - nvlist_free(config); - } - - spa_close(spa, FTAG); - return (error); -} - -static int -zfs_ioc_vdev_detach(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); - - spa_close(spa, FTAG); - return (error); -} - -static int -zfs_ioc_vdev_setpath(zfs_cmd_t *zc) -{ - spa_t *spa; - char *path = zc->zc_value; - uint64_t guid = zc->zc_guid; - int error; - - error = spa_open(zc->zc_name, &spa, FTAG); - if (error != 0) - return (error); - - error = spa_vdev_setpath(spa, guid, path); - spa_close(spa, FTAG); - return (error); -} - -static int -zfs_os_open_retry(char *name, objset_t **os) -{ - int error; - -retry: - error = dmu_objset_open(name, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY, os); - if (error != 0) { - /* - * This is ugly: dmu_objset_open() can return EBUSY if - * the objset is held exclusively. Fortunately this hold is - * only for a short while, so we retry here. - * This avoids user code having to handle EBUSY, - * for example for a "zfs list". - */ - if (error == EBUSY) { - delay(1); - goto retry; - } - } - return (error); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_nvlist_dst_size size of buffer for property nvlist - * - * outputs: - * zc_objset_stats stats - * zc_nvlist_dst property nvlist - * zc_nvlist_dst_size size of property nvlist - * zc_value alternate root - */ -static int -zfs_ioc_objset_stats(zfs_cmd_t *zc) -{ - objset_t *os = NULL; - int error; - nvlist_t *nv; - - if ((error = zfs_os_open_retry(zc->zc_name, &os)) != 0) - return (error); - - dmu_objset_fast_stat(os, &zc->zc_objset_stats); - - if (zc->zc_nvlist_dst != 0 && - (error = dsl_prop_get_all(os, &nv)) == 0) { - dmu_objset_stats(os, nv); - /* - * NB: zvol_get_stats() will read the objset contents, - * which we aren't supposed to do with a - * DS_MODE_STANDARD open, because it could be - * inconsistent. So this is a bit of a workaround... - */ - if (!zc->zc_objset_stats.dds_inconsistent) { - if (dmu_objset_type(os) == DMU_OST_ZVOL) - VERIFY(zvol_get_stats(os, nv) == 0); - } - error = put_nvlist(zc, nv); - nvlist_free(nv); - } - - spa_altroot(dmu_objset_spa(os), zc->zc_value, sizeof (zc->zc_value)); - - dmu_objset_close(os); - return (error); -} - -static int -nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) -{ - uint64_t value; - int error; - - /* - * zfs_get_zplprop() will either find a value or give us - * the default value (if there is one). - */ - if ((error = zfs_get_zplprop(os, prop, &value)) != 0) - return (error); - VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); - return (0); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_nvlist_dst_size size of buffer for zpl property nvlist - * - * outputs: - * zc_nvlist_dst zpl property nvlist - * zc_nvlist_dst_size size of zpl property nvlist - */ -static int -zfs_ioc_objset_zplprops(zfs_cmd_t *zc) -{ - objset_t *os; - int err; - - if ((err = zfs_os_open_retry(zc->zc_name, &os)) != 0) - return (err); - - dmu_objset_fast_stat(os, &zc->zc_objset_stats); - - /* - * NB: nvl_add_zplprop() will read the objset contents, - * which we aren't supposed to do with a DS_MODE_STANDARD - * open, because it could be inconsistent. - */ - if (zc->zc_nvlist_dst != NULL && - !zc->zc_objset_stats.dds_inconsistent && - dmu_objset_type(os) == DMU_OST_ZFS) { - nvlist_t *nv; - - VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); - if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && - (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && - (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && - (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) - err = put_nvlist(zc, nv); - nvlist_free(nv); - } else { - err = ENOENT; - } - dmu_objset_close(os); - return (err); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_cookie zap cursor - * zc_nvlist_dst_size size of buffer for property nvlist - * - * outputs: - * zc_name name of next filesystem - * zc_objset_stats stats - * zc_nvlist_dst property nvlist - * zc_nvlist_dst_size size of property nvlist - * zc_value alternate root - */ -static int -zfs_ioc_dataset_list_next(zfs_cmd_t *zc) -{ - objset_t *os; - int error; - char *p; - - if ((error = zfs_os_open_retry(zc->zc_name, &os)) != 0) { - if (error == ENOENT) - error = ESRCH; - return (error); - } - - p = strrchr(zc->zc_name, '/'); - if (p == NULL || p[1] != '\0') - (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); - p = zc->zc_name + strlen(zc->zc_name); - - do { - error = dmu_dir_list_next(os, - sizeof (zc->zc_name) - (p - zc->zc_name), p, - NULL, &zc->zc_cookie); - if (error == ENOENT) - error = ESRCH; - } while (error == 0 && !INGLOBALZONE(curproc) && - !zone_dataset_visible(zc->zc_name, NULL)); - - /* - * If it's a hidden dataset (ie. with a '$' in its name), don't - * try to get stats for it. Userland will skip over it. - */ - if (error == 0 && strchr(zc->zc_name, '$') == NULL) - error = zfs_ioc_objset_stats(zc); /* fill in the stats */ - - dmu_objset_close(os); - return (error); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_cookie zap cursor - * zc_nvlist_dst_size size of buffer for property nvlist - * - * outputs: - * zc_name name of next snapshot - * zc_objset_stats stats - * zc_nvlist_dst property nvlist - * zc_nvlist_dst_size size of property nvlist - * zc_value alternate root - */ -static int -zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) -{ - objset_t *os; - int error; - - if ((error = zfs_os_open_retry(zc->zc_name, &os)) != 0) { - if (error == ENOENT) - error = ESRCH; - return (error); - } - - /* - * A dataset name of maximum length cannot have any snapshots, - * so exit immediately. - */ - if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { - dmu_objset_close(os); - return (ESRCH); - } - - error = dmu_snapshot_list_next(os, - sizeof (zc->zc_name) - strlen(zc->zc_name), - zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); - if (error == ENOENT) - error = ESRCH; - - if (error == 0) - error = zfs_ioc_objset_stats(zc); /* fill in the stats */ - - /* if we failed, undo the @ that we tacked on to zc_name */ - if (error != 0) - *strchr(zc->zc_name, '@') = '\0'; - - dmu_objset_close(os); - return (error); -} - -int -zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) -{ - nvpair_t *elem; - int error; - uint64_t intval; - char *strval; - - /* - * First validate permission to set all of the properties - */ - elem = NULL; - while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { - const char *propname = nvpair_name(elem); - zfs_prop_t prop = zfs_name_to_prop(propname); - - if (prop == ZPROP_INVAL) { - /* - * If this is a user-defined property, it must be a - * string, and there is no further validation to do. - */ - if (!zfs_prop_user(propname) || - nvpair_type(elem) != DATA_TYPE_STRING) - return (EINVAL); - - if (error = zfs_secpolicy_write_perms(name, - ZFS_DELEG_PERM_USERPROP, CRED())) - return (error); - continue; - } - - if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) - return (error); - - /* - * Check that this value is valid for this pool version - */ - switch (prop) { - case ZFS_PROP_COMPRESSION: - /* - * If the user specified gzip compression, make sure - * the SPA supports it. We ignore any errors here since - * we'll catch them later. - */ - if (nvpair_type(elem) == DATA_TYPE_UINT64 && - nvpair_value_uint64(elem, &intval) == 0 && - intval >= ZIO_COMPRESS_GZIP_1 && - intval <= ZIO_COMPRESS_GZIP_9) { - if (zfs_check_version(name, - SPA_VERSION_GZIP_COMPRESSION)) - return (ENOTSUP); - } - break; - - case ZFS_PROP_COPIES: - if (zfs_check_version(name, SPA_VERSION_DITTO_BLOCKS)) - return (ENOTSUP); - break; - - case ZFS_PROP_SHARESMB: - if (zpl_check_version(name, ZPL_VERSION_FUID)) - return (ENOTSUP); - break; - } - if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) - return (error); - } - - elem = NULL; - while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { - const char *propname = nvpair_name(elem); - zfs_prop_t prop = zfs_name_to_prop(propname); - - if (prop == ZPROP_INVAL) { - VERIFY(nvpair_value_string(elem, &strval) == 0); - error = dsl_prop_set(name, propname, 1, - strlen(strval) + 1, strval); - if (error == 0) - continue; - else - return (error); - } - - switch (prop) { - case ZFS_PROP_QUOTA: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = dsl_dir_set_quota(name, intval)) != 0) - return (error); - break; - - case ZFS_PROP_REFQUOTA: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = dsl_dataset_set_quota(name, intval)) != 0) - return (error); - break; - - case ZFS_PROP_RESERVATION: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = dsl_dir_set_reservation(name, - intval)) != 0) - return (error); - break; - - case ZFS_PROP_REFRESERVATION: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = dsl_dataset_set_reservation(name, - intval)) != 0) - return (error); - break; - - case ZFS_PROP_VOLSIZE: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = zvol_set_volsize(name, - ddi_driver_major(zfs_dip), intval)) != 0) - return (error); - break; - - case ZFS_PROP_VOLBLOCKSIZE: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = zvol_set_volblocksize(name, intval)) != 0) - return (error); - break; - - case ZFS_PROP_VERSION: - if ((error = nvpair_value_uint64(elem, &intval)) != 0 || - (error = zfs_set_version(name, intval)) != 0) - return (error); - break; - - default: - if (nvpair_type(elem) == DATA_TYPE_STRING) { - if (zfs_prop_get_type(prop) != - PROP_TYPE_STRING) - return (EINVAL); - VERIFY(nvpair_value_string(elem, &strval) == 0); - if ((error = dsl_prop_set(name, - nvpair_name(elem), 1, strlen(strval) + 1, - strval)) != 0) - return (error); - } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { - const char *unused; - - VERIFY(nvpair_value_uint64(elem, &intval) == 0); - - switch (zfs_prop_get_type(prop)) { - case PROP_TYPE_NUMBER: - break; - case PROP_TYPE_STRING: - return (EINVAL); - case PROP_TYPE_INDEX: - if (zfs_prop_index_to_string(prop, - intval, &unused) != 0) - return (EINVAL); - break; - default: - cmn_err(CE_PANIC, - "unknown property type"); - break; - } - - if ((error = dsl_prop_set(name, propname, - 8, 1, &intval)) != 0) - return (error); - } else { - return (EINVAL); - } - break; - } - } - - return (0); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_value name of property to inherit - * zc_nvlist_src{_size} nvlist of properties to apply - * - * outputs: none - */ -static int -zfs_ioc_set_prop(zfs_cmd_t *zc) -{ - nvlist_t *nvl; - int error; - - if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, - &nvl)) != 0) - return (error); - - error = zfs_set_prop_nvlist(zc->zc_name, nvl); - - nvlist_free(nvl); - return (error); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_value name of property to inherit - * - * outputs: none - */ -static int -zfs_ioc_inherit_prop(zfs_cmd_t *zc) -{ - /* the property name has been validated by zfs_secpolicy_inherit() */ - return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); -} - -static int -zfs_ioc_pool_set_props(zfs_cmd_t *zc) -{ - nvlist_t *props; - spa_t *spa; - int error; - - if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, - &props))) - return (error); - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { - nvlist_free(props); - return (error); - } - - error = spa_prop_set(spa, props); - - nvlist_free(props); - spa_close(spa, FTAG); - - return (error); -} - -static int -zfs_ioc_pool_get_props(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - nvlist_t *nvp = NULL; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - error = spa_prop_get(spa, &nvp); - - if (error == 0 && zc->zc_nvlist_dst != NULL) - error = put_nvlist(zc, nvp); - else - error = EFAULT; - - spa_close(spa, FTAG); - - if (nvp) - nvlist_free(nvp); - return (error); -} - -static int -zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) -{ - nvlist_t *nvp; - int error; - uint32_t uid; - uint32_t gid; - uint32_t *groups; - uint_t group_cnt; - cred_t *usercred; - - if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, - &nvp)) != 0) { - return (error); - } - - if ((error = nvlist_lookup_uint32(nvp, - ZFS_DELEG_PERM_UID, &uid)) != 0) { - nvlist_free(nvp); - return (EPERM); - } - - if ((error = nvlist_lookup_uint32(nvp, - ZFS_DELEG_PERM_GID, &gid)) != 0) { - nvlist_free(nvp); - return (EPERM); - } - - if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, - &groups, &group_cnt)) != 0) { - nvlist_free(nvp); - return (EPERM); - } - usercred = cralloc(); - if ((crsetugid(usercred, uid, gid) != 0) || - (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { - nvlist_free(nvp); - crfree(usercred); - return (EPERM); - } - nvlist_free(nvp); - error = dsl_deleg_access(zc->zc_name, - zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); - crfree(usercred); - return (error); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_nvlist_src{_size} nvlist of delegated permissions - * zc_perm_action allow/unallow flag - * - * outputs: none - */ -static int -zfs_ioc_set_fsacl(zfs_cmd_t *zc) -{ - int error; - nvlist_t *fsaclnv = NULL; - - if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, - &fsaclnv)) != 0) - return (error); - - /* - * Verify nvlist is constructed correctly - */ - if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { - nvlist_free(fsaclnv); - return (EINVAL); - } - - /* - * If we don't have PRIV_SYS_MOUNT, then validate - * that user is allowed to hand out each permission in - * the nvlist(s) - */ - - error = secpolicy_zfs(CRED()); - if (error) { - if (zc->zc_perm_action == B_FALSE) { - error = dsl_deleg_can_allow(zc->zc_name, - fsaclnv, CRED()); - } else { - error = dsl_deleg_can_unallow(zc->zc_name, - fsaclnv, CRED()); - } - } - - if (error == 0) - error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); - - nvlist_free(fsaclnv); - return (error); -} - -/* - * inputs: - * zc_name name of filesystem - * - * outputs: - * zc_nvlist_src{_size} nvlist of delegated permissions - */ -static int -zfs_ioc_get_fsacl(zfs_cmd_t *zc) -{ - nvlist_t *nvp; - int error; - - if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { - error = put_nvlist(zc, nvp); - nvlist_free(nvp); - } - - return (error); -} - -/* - * inputs: - * zc_name name of volume - * - * outputs: none - */ -static int -zfs_ioc_create_minor(zfs_cmd_t *zc) -{ - return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); -} - -/* - * inputs: - * zc_name name of volume - * - * outputs: none - */ -static int -zfs_ioc_remove_minor(zfs_cmd_t *zc) -{ - return (zvol_remove_minor(zc->zc_name)); -} - -/* - * Search the vfs list for a specified resource. Returns a pointer to it - * or NULL if no suitable entry is found. The caller of this routine - * is responsible for releasing the returned vfs pointer. - */ -static vfs_t * -zfs_get_vfs(const char *resource) -{ - struct vfs *vfsp; - struct vfs *vfs_found = NULL; - - vfs_list_read_lock(); - vfsp = rootvfs; - do { - if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { - VFS_HOLD(vfsp); - vfs_found = vfsp; - break; - } - vfsp = vfsp->vfs_next; - } while (vfsp != rootvfs); - vfs_list_unlock(); - return (vfs_found); -} - -/* ARGSUSED */ -static void -zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) -{ - zfs_creat_t *zct = arg; - - zfs_create_fs(os, cr, zct->zct_zplprops, tx); -} - -#define ZFS_PROP_UNDEFINED ((uint64_t)-1) - -/* - * inputs: - * createprops list of properties requested by creator - * dataset name of dataset we are creating - * - * outputs: - * zplprops values for the zplprops we attach to the master node object - * - * Determine the settings for utf8only, normalization and - * casesensitivity. Specific values may have been requested by the - * creator and/or we can inherit values from the parent dataset. If - * the file system is of too early a vintage, a creator can not - * request settings for these properties, even if the requested - * setting is the default value. We don't actually want to create dsl - * properties for these, so remove them from the source nvlist after - * processing. - */ -static int -zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, - nvlist_t *zplprops, uint64_t zplver, boolean_t *is_ci) -{ - objset_t *os; - char parentname[MAXNAMELEN]; - char *cp; - uint64_t sense = ZFS_PROP_UNDEFINED; - uint64_t norm = ZFS_PROP_UNDEFINED; - uint64_t u8 = ZFS_PROP_UNDEFINED; - int error = 0; - - ASSERT(zplprops != NULL); - - (void) strlcpy(parentname, dataset, sizeof (parentname)); - cp = strrchr(parentname, '/'); - ASSERT(cp != NULL); - cp[0] = '\0'; - - /* - * Pull out creator prop choices, if any. - */ - if (createprops) { - (void) nvlist_lookup_uint64(createprops, - zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); - (void) nvlist_remove_all(createprops, - zfs_prop_to_name(ZFS_PROP_NORMALIZE)); - (void) nvlist_lookup_uint64(createprops, - zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); - (void) nvlist_remove_all(createprops, - zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); - (void) nvlist_lookup_uint64(createprops, - zfs_prop_to_name(ZFS_PROP_CASE), &sense); - (void) nvlist_remove_all(createprops, - zfs_prop_to_name(ZFS_PROP_CASE)); - } - - /* - * If the file system or pool is version is too "young" to - * support normalization and the creator tried to set a value - * for one of the props, error out. We only need check the - * ZPL version because we've already checked by now that the - * SPA version is compatible with the selected ZPL version. - */ - if (zplver < ZPL_VERSION_NORMALIZATION && - (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || - sense != ZFS_PROP_UNDEFINED)) - return (ENOTSUP); - - /* - * Put the version in the zplprops - */ - VERIFY(nvlist_add_uint64(zplprops, - zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); - - /* - * Open parent object set so we can inherit zplprop values if - * necessary. - */ - if ((error = zfs_os_open_retry(parentname, &os)) != 0) - return (error); - - if (norm == ZFS_PROP_UNDEFINED) - VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); - VERIFY(nvlist_add_uint64(zplprops, - zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); - - /* - * If we're normalizing, names must always be valid UTF-8 strings. - */ - if (norm) - u8 = 1; - if (u8 == ZFS_PROP_UNDEFINED) - VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); - VERIFY(nvlist_add_uint64(zplprops, - zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); - - if (sense == ZFS_PROP_UNDEFINED) - VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); - VERIFY(nvlist_add_uint64(zplprops, - zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); - - if (is_ci) - *is_ci = (sense == ZFS_CASE_INSENSITIVE); - - dmu_objset_close(os); - return (0); -} - -/* - * inputs: - * zc_objset_type type of objset to create (fs vs zvol) - * zc_name name of new objset - * zc_value name of snapshot to clone from (may be empty) - * zc_nvlist_src{_size} nvlist of properties to apply - * - * outputs: none - */ -static int -zfs_ioc_create(zfs_cmd_t *zc) -{ - objset_t *clone; - int error = 0; - zfs_creat_t zct; - nvlist_t *nvprops = NULL; - void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); - dmu_objset_type_t type = zc->zc_objset_type; - - switch (type) { - - case DMU_OST_ZFS: - cbfunc = zfs_create_cb; - break; - - case DMU_OST_ZVOL: - cbfunc = zvol_create_cb; - break; - - default: - cbfunc = NULL; - break; - } - if (strchr(zc->zc_name, '@') || - strchr(zc->zc_name, '%')) - return (EINVAL); - - if (zc->zc_nvlist_src != NULL && - (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, - &nvprops)) != 0) - return (error); - - zct.zct_zplprops = NULL; - zct.zct_props = nvprops; - - if (zc->zc_value[0] != '\0') { - /* - * We're creating a clone of an existing snapshot. - */ - zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; - if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { - nvlist_free(nvprops); - return (EINVAL); - } - - error = dmu_objset_open(zc->zc_value, type, - DS_MODE_STANDARD | DS_MODE_READONLY, &clone); - if (error) { - nvlist_free(nvprops); - return (error); - } - - error = dmu_objset_create(zc->zc_name, type, clone, 0, - NULL, NULL); - if (error) { - dmu_objset_close(clone); - nvlist_free(nvprops); - return (error); - } - dmu_objset_close(clone); - } else { - boolean_t is_insensitive = B_FALSE; - - if (cbfunc == NULL) { - nvlist_free(nvprops); - return (EINVAL); - } - - if (type == DMU_OST_ZVOL) { - uint64_t volsize, volblocksize; - - if (nvprops == NULL || - nvlist_lookup_uint64(nvprops, - zfs_prop_to_name(ZFS_PROP_VOLSIZE), - &volsize) != 0) { - nvlist_free(nvprops); - return (EINVAL); - } - - if ((error = nvlist_lookup_uint64(nvprops, - zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), - &volblocksize)) != 0 && error != ENOENT) { - nvlist_free(nvprops); - return (EINVAL); - } - - if (error != 0) - volblocksize = zfs_prop_default_numeric( - ZFS_PROP_VOLBLOCKSIZE); - - if ((error = zvol_check_volblocksize( - volblocksize)) != 0 || - (error = zvol_check_volsize(volsize, - volblocksize)) != 0) { - nvlist_free(nvprops); - return (error); - } - } else if (type == DMU_OST_ZFS) { - uint64_t version; - int error; - - /* - * Default ZPL version to non-FUID capable if the - * pool is not upgraded to support FUIDs. - */ - if (zfs_check_version(zc->zc_name, SPA_VERSION_FUID)) - version = ZPL_VERSION_FUID - 1; - else - version = ZPL_VERSION; - - /* - * Potentially override default ZPL version based - * on creator's request. - */ - (void) nvlist_lookup_uint64(nvprops, - zfs_prop_to_name(ZFS_PROP_VERSION), &version); - - /* - * Make sure version we ended up with is kosher - */ - if ((version < ZPL_VERSION_INITIAL || - version > ZPL_VERSION) || - (version >= ZPL_VERSION_FUID && - zfs_check_version(zc->zc_name, SPA_VERSION_FUID))) { - nvlist_free(nvprops); - return (ENOTSUP); - } - - /* - * We have to have normalization and - * case-folding flags correct when we do the - * file system creation, so go figure them out - * now. - */ - VERIFY(nvlist_alloc(&zct.zct_zplprops, - NV_UNIQUE_NAME, KM_SLEEP) == 0); - error = zfs_fill_zplprops(zc->zc_name, nvprops, - zct.zct_zplprops, version, &is_insensitive); - if (error != 0) { - nvlist_free(nvprops); - nvlist_free(zct.zct_zplprops); - return (error); - } - } - error = dmu_objset_create(zc->zc_name, type, NULL, - is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); - nvlist_free(zct.zct_zplprops); - } - - /* - * It would be nice to do this atomically. - */ - if (error == 0) { - if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) - (void) dmu_objset_destroy(zc->zc_name); - } - nvlist_free(nvprops); - return (error); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_value short name of snapshot - * zc_cookie recursive flag - * - * outputs: none - */ -static int -zfs_ioc_snapshot(zfs_cmd_t *zc) -{ - if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) - return (EINVAL); - return (dmu_objset_snapshot(zc->zc_name, - zc->zc_value, zc->zc_cookie)); -} - -int -zfs_unmount_snap(char *name, void *arg) -{ - char *snapname = arg; - char *cp; - vfs_t *vfsp = NULL; - - /* - * Snapshots (which are under .zfs control) must be unmounted - * before they can be destroyed. - */ - - if (snapname) { - (void) strcat(name, "@"); - (void) strcat(name, snapname); - vfsp = zfs_get_vfs(name); - cp = strchr(name, '@'); - *cp = '\0'; - } else if (strchr(name, '@')) { - vfsp = zfs_get_vfs(name); - } - - if (vfsp) { - /* - * Always force the unmount for snapshots. - */ - int flag = MS_FORCE; - int err; - - if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { - VFS_RELE(vfsp); - return (err); - } - VFS_RELE(vfsp); - if ((err = dounmount(vfsp, flag, kcred)) != 0) - return (err); - } - return (0); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_value short name of snapshot - * - * outputs: none - */ -static int -zfs_ioc_destroy_snaps(zfs_cmd_t *zc) -{ - int err; - - if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) - return (EINVAL); - err = dmu_objset_find(zc->zc_name, - zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); - if (err) - return (err); - return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); -} - -/* - * inputs: - * zc_name name of dataset to destroy - * zc_objset_type type of objset - * - * outputs: none - */ -static int -zfs_ioc_destroy(zfs_cmd_t *zc) -{ - if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { - int err = zfs_unmount_snap(zc->zc_name, NULL); - if (err) - return (err); - } - - return (dmu_objset_destroy(zc->zc_name)); -} - -/* - * inputs: - * zc_name name of dataset to rollback (to most recent snapshot) - * - * outputs: none - */ -static int -zfs_ioc_rollback(zfs_cmd_t *zc) -{ - objset_t *os; - int error; - zfsvfs_t *zfsvfs = NULL; - - /* - * Get the zfsvfs for the receiving objset. There - * won't be one if we're operating on a zvol, if the - * objset doesn't exist yet, or is not mounted. - */ - error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, - DS_MODE_STANDARD, &os); - if (error) - return (error); - - if (dmu_objset_type(os) == DMU_OST_ZFS) { - mutex_enter(&os->os->os_user_ptr_lock); - zfsvfs = dmu_objset_get_user(os); - if (zfsvfs != NULL) - VFS_HOLD(zfsvfs->z_vfs); - mutex_exit(&os->os->os_user_ptr_lock); - } - - if (zfsvfs != NULL) { - char osname[MAXNAMELEN]; - int mode; - - error = zfs_suspend_fs(zfsvfs, osname, &mode); - if (error == 0) { - int resume_err; - - ASSERT(strcmp(osname, zc->zc_name) == 0); - error = dmu_objset_rollback(os); - resume_err = zfs_resume_fs(zfsvfs, osname, mode); - error = error ? error : resume_err; - } else { - dmu_objset_close(os); - } - VFS_RELE(zfsvfs->z_vfs); - } else { - error = dmu_objset_rollback(os); - } - /* Note, the dmu_objset_rollback() closes the objset for us. */ - - return (error); -} - -/* - * inputs: - * zc_name old name of dataset - * zc_value new name of dataset - * zc_cookie recursive flag (only valid for snapshots) - * - * outputs: none - */ -static int -zfs_ioc_rename(zfs_cmd_t *zc) -{ - boolean_t recursive = zc->zc_cookie & 1; - - zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; - if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || - strchr(zc->zc_value, '%')) - return (EINVAL); - - /* - * Unmount snapshot unless we're doing a recursive rename, - * in which case the dataset code figures out which snapshots - * to unmount. - */ - if (!recursive && strchr(zc->zc_name, '@') != NULL && - zc->zc_objset_type == DMU_OST_ZFS) { - int err = zfs_unmount_snap(zc->zc_name, NULL); - if (err) - return (err); - } - - return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); -} - -/* - * inputs: - * zc_name name of containing filesystem - * zc_nvlist_src{_size} nvlist of properties to apply - * zc_value name of snapshot to create - * zc_string name of clone origin (if DRR_FLAG_CLONE) - * zc_cookie file descriptor to recv from - * zc_begin_record the BEGIN record of the stream (not byteswapped) - * zc_guid force flag - * - * outputs: - * zc_cookie number of bytes read - */ -static int -zfs_ioc_recv(zfs_cmd_t *zc) -{ - file_t *fp; - objset_t *os; - dmu_recv_cookie_t drc; - zfsvfs_t *zfsvfs = NULL; - boolean_t force = (boolean_t)zc->zc_guid; - int error, fd; - offset_t off; - nvlist_t *props = NULL; - objset_t *origin = NULL; - char *tosnap; - char tofs[ZFS_MAXNAMELEN]; - - if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || - strchr(zc->zc_value, '@') == NULL || - strchr(zc->zc_value, '%')) - return (EINVAL); - - (void) strcpy(tofs, zc->zc_value); - tosnap = strchr(tofs, '@'); - *tosnap = '\0'; - tosnap++; - - if (zc->zc_nvlist_src != NULL && - (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, - &props)) != 0) - return (error); - - fd = zc->zc_cookie; - fp = getf(fd); - if (fp == NULL) { - nvlist_free(props); - return (EBADF); - } - - /* - * Get the zfsvfs for the receiving objset. There - * won't be one if we're operating on a zvol, if the - * objset doesn't exist yet, or is not mounted. - */ - - error = dmu_objset_open(tofs, DMU_OST_ZFS, - DS_MODE_STANDARD | DS_MODE_READONLY, &os); - if (!error) { - mutex_enter(&os->os->os_user_ptr_lock); - zfsvfs = dmu_objset_get_user(os); - if (zfsvfs != NULL) { - VFS_HOLD(zfsvfs->z_vfs); - mutex_exit(&os->os->os_user_ptr_lock); - if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { - VFS_RELE(zfsvfs->z_vfs); - dmu_objset_close(os); - nvlist_free(props); - releasef(fd); - return (EBUSY); - } - } else { - mutex_exit(&os->os->os_user_ptr_lock); - } - dmu_objset_close(os); - } - - if (zc->zc_string[0]) { - error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY, &origin); - if (error) { - if (zfsvfs != NULL) { - mutex_exit(&zfsvfs->z_online_recv_lock); - VFS_RELE(zfsvfs->z_vfs); - } - nvlist_free(props); - releasef(fd); - return (error); - } - } - - error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, - force, origin, zfsvfs != NULL, &drc); - if (origin) - dmu_objset_close(origin); - if (error) { - if (zfsvfs != NULL) { - mutex_exit(&zfsvfs->z_online_recv_lock); - VFS_RELE(zfsvfs->z_vfs); - } - nvlist_free(props); - releasef(fd); - return (error); - } - - /* - * If properties are supplied, they are to completely replace - * the existing ones; "inherit" any existing properties. - */ - if (props) { - objset_t *os; - nvlist_t *nv = NULL; - - error = dmu_objset_open(tofs, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY | DS_MODE_INCONSISTENT, - &os); - if (error == 0) { - error = dsl_prop_get_all(os, &nv); - dmu_objset_close(os); - } - if (error == 0) { - nvpair_t *elem; - zfs_cmd_t *zc2; - zc2 = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); - - (void) strcpy(zc2->zc_name, tofs); - for (elem = nvlist_next_nvpair(nv, NULL); elem; - elem = nvlist_next_nvpair(nv, elem)) { - (void) strcpy(zc2->zc_value, nvpair_name(elem)); - if (zfs_secpolicy_inherit(zc2, CRED()) == 0) - (void) zfs_ioc_inherit_prop(zc2); - } - kmem_free(zc2, sizeof (zfs_cmd_t)); - } - if (nv) - nvlist_free(nv); - } - - /* - * Set properties. Note, we ignore errors. Would be better to - * do best-effort in zfs_set_prop_nvlist, too. - */ - (void) zfs_set_prop_nvlist(tofs, props); - nvlist_free(props); - - off = fp->f_offset; - error = dmu_recv_stream(&drc, fp->f_vnode, &off); - - if (error == 0) { - if (zfsvfs != NULL) { - char osname[MAXNAMELEN]; - int mode; - - error = zfs_suspend_fs(zfsvfs, osname, &mode); - if (error == 0) { - int resume_err; - - error = dmu_recv_end(&drc); - resume_err = zfs_resume_fs(zfsvfs, - osname, mode); - error = error ? error : resume_err; - } else { - dmu_recv_abort_cleanup(&drc); - } - } else { - error = dmu_recv_end(&drc); - } - } - if (zfsvfs != NULL) { - mutex_exit(&zfsvfs->z_online_recv_lock); - VFS_RELE(zfsvfs->z_vfs); - } - - zc->zc_cookie = off - fp->f_offset; - if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) - fp->f_offset = off; - - releasef(fd); - return (error); -} - -/* - * inputs: - * zc_name name of snapshot to send - * zc_value short name of incremental fromsnap (may be empty) - * zc_cookie file descriptor to send stream to - * zc_obj fromorigin flag (mutually exclusive with zc_value) - * - * outputs: none - */ -static int -zfs_ioc_send(zfs_cmd_t *zc) -{ - objset_t *fromsnap = NULL; - objset_t *tosnap; - file_t *fp; - int error; - offset_t off; - - error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY, &tosnap); - if (error) - return (error); - - if (zc->zc_value[0] != '\0') { - char buf[MAXPATHLEN]; - char *cp; - - (void) strncpy(buf, zc->zc_name, sizeof (buf)); - cp = strchr(buf, '@'); - if (cp) - *(cp+1) = 0; - (void) strncat(buf, zc->zc_value, sizeof (buf)); - error = dmu_objset_open(buf, DMU_OST_ANY, - DS_MODE_STANDARD | DS_MODE_READONLY, &fromsnap); - if (error) { - dmu_objset_close(tosnap); - return (error); - } - } - - fp = getf(zc->zc_cookie); - if (fp == NULL) { - dmu_objset_close(tosnap); - if (fromsnap) - dmu_objset_close(fromsnap); - return (EBADF); - } - - off = fp->f_offset; - error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); - - if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) - fp->f_offset = off; - releasef(zc->zc_cookie); - if (fromsnap) - dmu_objset_close(fromsnap); - dmu_objset_close(tosnap); - return (error); -} - -static int -zfs_ioc_inject_fault(zfs_cmd_t *zc) -{ - int id, error; - - error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, - &zc->zc_inject_record); - - if (error == 0) - zc->zc_guid = (uint64_t)id; - - return (error); -} - -static int -zfs_ioc_clear_fault(zfs_cmd_t *zc) -{ - return (zio_clear_fault((int)zc->zc_guid)); -} - -static int -zfs_ioc_inject_list_next(zfs_cmd_t *zc) -{ - int id = (int)zc->zc_guid; - int error; - - error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), - &zc->zc_inject_record); - - zc->zc_guid = id; - - return (error); -} - -static int -zfs_ioc_error_log(zfs_cmd_t *zc) -{ - spa_t *spa; - int error; - size_t count = (size_t)zc->zc_nvlist_dst_size; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, - &count); - if (error == 0) - zc->zc_nvlist_dst_size = count; - else - zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); - - spa_close(spa, FTAG); - - return (error); -} - -static int -zfs_ioc_clear(zfs_cmd_t *zc) -{ - spa_t *spa; - vdev_t *vd; - uint64_t txg; - int error; - - if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) - return (error); - - /* - * Try to resume any I/Os which may have been suspended - * as a result of a complete pool failure. - */ - if (!list_is_empty(&spa->spa_zio_list)) { - if (zio_vdev_resume_io(spa) != 0) { - spa_close(spa, FTAG); - return (EIO); - } - } - - txg = spa_vdev_enter(spa); - - if (zc->zc_guid == 0) { - vd = NULL; - } else if ((vd = spa_lookup_by_guid(spa, zc->zc_guid)) == NULL) { - spa_aux_vdev_t *sav; - int i; - - /* - * Check if this is an l2cache device. - */ - ASSERT(spa != NULL); - sav = &spa->spa_l2cache; - for (i = 0; i < sav->sav_count; i++) { - if (sav->sav_vdevs[i]->vdev_guid == zc->zc_guid) { - vd = sav->sav_vdevs[i]; - break; - } - } - - if (vd == NULL) { - (void) spa_vdev_exit(spa, NULL, txg, ENODEV); - spa_close(spa, FTAG); - return (ENODEV); - } - } - - vdev_clear(spa, vd, B_TRUE); - - (void) spa_vdev_exit(spa, NULL, txg, 0); - - spa_close(spa, FTAG); - - return (0); -} - -/* - * inputs: - * zc_name name of filesystem - * zc_value name of origin snapshot - * - * outputs: none - */ -static int -zfs_ioc_promote(zfs_cmd_t *zc) -{ - char *cp; - - /* - * We don't need to unmount *all* the origin fs's snapshots, but - * it's easier. - */ - cp = strchr(zc->zc_value, '@'); - if (cp) - *cp = '\0'; - (void) dmu_objset_find(zc->zc_value, - zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); - return (dsl_dataset_promote(zc->zc_name)); -} - -/* - * We don't want to have a hard dependency - * against some special symbols in sharefs - * nfs, and smbsrv. Determine them if needed when - * the first file system is shared. - * Neither sharefs, nfs or smbsrv are unloadable modules. - */ -int (*znfsexport_fs)(void *arg); -int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); -int (*zsmbexport_fs)(void *arg, boolean_t add_share); - -int zfs_nfsshare_inited; -int zfs_smbshare_inited; - -ddi_modhandle_t nfs_mod; -ddi_modhandle_t sharefs_mod; -ddi_modhandle_t smbsrv_mod; -kmutex_t zfs_share_lock; - -static int -zfs_init_sharefs() -{ - int error; - - ASSERT(MUTEX_HELD(&zfs_share_lock)); - /* Both NFS and SMB shares also require sharetab support. */ - if (sharefs_mod == NULL && ((sharefs_mod = - ddi_modopen("fs/sharefs", - KRTLD_MODE_FIRST, &error)) == NULL)) { - return (ENOSYS); - } - if (zshare_fs == NULL && ((zshare_fs = - (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) - ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { - return (ENOSYS); - } - return (0); -} - -static int -zfs_ioc_share(zfs_cmd_t *zc) -{ - int error; - int opcode; - - switch (zc->zc_share.z_sharetype) { - case ZFS_SHARE_NFS: - case ZFS_UNSHARE_NFS: - if (zfs_nfsshare_inited == 0) { - mutex_enter(&zfs_share_lock); - if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", - KRTLD_MODE_FIRST, &error)) == NULL)) { - mutex_exit(&zfs_share_lock); - return (ENOSYS); - } - if (znfsexport_fs == NULL && - ((znfsexport_fs = (int (*)(void *)) - ddi_modsym(nfs_mod, - "nfs_export", &error)) == NULL)) { - mutex_exit(&zfs_share_lock); - return (ENOSYS); - } - error = zfs_init_sharefs(); - if (error) { - mutex_exit(&zfs_share_lock); - return (ENOSYS); - } - zfs_nfsshare_inited = 1; - mutex_exit(&zfs_share_lock); - } - break; - case ZFS_SHARE_SMB: - case ZFS_UNSHARE_SMB: - if (zfs_smbshare_inited == 0) { - mutex_enter(&zfs_share_lock); - if (smbsrv_mod == NULL && ((smbsrv_mod = - ddi_modopen("drv/smbsrv", - KRTLD_MODE_FIRST, &error)) == NULL)) { - mutex_exit(&zfs_share_lock); - return (ENOSYS); - } - if (zsmbexport_fs == NULL && ((zsmbexport_fs = - (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, - "smb_server_share", &error)) == NULL)) { - mutex_exit(&zfs_share_lock); - return (ENOSYS); - } - error = zfs_init_sharefs(); - if (error) { - mutex_exit(&zfs_share_lock); - return (ENOSYS); - } - zfs_smbshare_inited = 1; - mutex_exit(&zfs_share_lock); - } - break; - default: - return (EINVAL); - } - - switch (zc->zc_share.z_sharetype) { - case ZFS_SHARE_NFS: - case ZFS_UNSHARE_NFS: - if (error = - znfsexport_fs((void *) - (uintptr_t)zc->zc_share.z_exportdata)) - return (error); - break; - case ZFS_SHARE_SMB: - case ZFS_UNSHARE_SMB: - if (error = zsmbexport_fs((void *) - (uintptr_t)zc->zc_share.z_exportdata, - zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? - B_TRUE : B_FALSE)) { - return (error); - } - break; - } - - opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || - zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? - SHAREFS_ADD : SHAREFS_REMOVE; - - /* - * Add or remove share from sharetab - */ - error = zshare_fs(opcode, - (void *)(uintptr_t)zc->zc_share.z_sharedata, - zc->zc_share.z_sharemax); - - return (error); - -} - -/* - * pool create, destroy, and export don't log the history as part of - * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export - * do the logging of those commands. - */ -static zfs_ioc_vec_t zfs_ioc_vec[] = { - { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, - { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, - { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, - { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, - { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, - { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, - { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, - { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, - { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, - { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, - { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, - { zfs_ioc_dataset_list_next, zfs_secpolicy_read, - DATASET_NAME, B_FALSE }, - { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, - DATASET_NAME, B_FALSE }, - { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, - { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, - { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, - { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, - { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, - { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, - { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, - { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, - { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, - { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, - { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, - { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, - { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, - { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, - { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, - { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, - { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, - { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, - { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, - { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, - { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, - { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, - { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, - DATASET_NAME, B_FALSE }, - { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, - { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, -}; - -static int -zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) -{ - zfs_cmd_t *zc; - uint_t vec; - int error, rc; - - if (getminor(dev) != 0) - return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); - - vec = cmd - ZFS_IOC; - ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); - - if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) - return (EINVAL); - - zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); - - error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); - - if (error == 0) - error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); - - /* - * Ensure that all pool/dataset names are valid before we pass down to - * the lower layers. - */ - if (error == 0) { - zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; - switch (zfs_ioc_vec[vec].zvec_namecheck) { - case POOL_NAME: - if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) - error = EINVAL; - break; - - case DATASET_NAME: - if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) - error = EINVAL; - break; - - case NO_NAME: - break; - } - } - - if (error == 0) - error = zfs_ioc_vec[vec].zvec_func(zc); - - rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); - if (error == 0) { - error = rc; - if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) - zfs_log_history(zc); - } - - kmem_free(zc, sizeof (zfs_cmd_t)); - return (error); -} - -static int -zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) -{ - if (cmd != DDI_ATTACH) - return (DDI_FAILURE); - - if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, - DDI_PSEUDO, 0) == DDI_FAILURE) - return (DDI_FAILURE); - - zfs_dip = dip; - - ddi_report_dev(dip); - - return (DDI_SUCCESS); -} - -static int -zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) -{ - if (spa_busy() || zfs_busy() || zvol_busy()) - return (DDI_FAILURE); - - if (cmd != DDI_DETACH) - return (DDI_FAILURE); - - zfs_dip = NULL; - - ddi_prop_remove_all(dip); - ddi_remove_minor_node(dip, NULL); - - return (DDI_SUCCESS); -} - -/*ARGSUSED*/ -static int -zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) -{ - switch (infocmd) { - case DDI_INFO_DEVT2DEVINFO: - *result = zfs_dip; - return (DDI_SUCCESS); - - case DDI_INFO_DEVT2INSTANCE: - *result = (void *)0; - return (DDI_SUCCESS); - } - - return (DDI_FAILURE); -} - -/* - * OK, so this is a little weird. - * - * /dev/zfs is the control node, i.e. minor 0. - * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. - * - * /dev/zfs has basically nothing to do except serve up ioctls, - * so most of the standard driver entry points are in zvol.c. - */ -static struct cb_ops zfs_cb_ops = { - zvol_open, /* open */ - zvol_close, /* close */ - zvol_strategy, /* strategy */ - nodev, /* print */ - zvol_dump, /* dump */ - zvol_read, /* read */ - zvol_write, /* write */ - zfsdev_ioctl, /* ioctl */ - nodev, /* devmap */ - nodev, /* mmap */ - nodev, /* segmap */ - nochpoll, /* poll */ - ddi_prop_op, /* prop_op */ - NULL, /* streamtab */ - D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ - CB_REV, /* version */ - nodev, /* async read */ - nodev, /* async write */ -}; - -static struct dev_ops zfs_dev_ops = { - DEVO_REV, /* version */ - 0, /* refcnt */ - zfs_info, /* info */ - nulldev, /* identify */ - nulldev, /* probe */ - zfs_attach, /* attach */ - zfs_detach, /* detach */ - nodev, /* reset */ - &zfs_cb_ops, /* driver operations */ - NULL /* no bus operations */ -}; - -static struct modldrv zfs_modldrv = { - &mod_driverops, "ZFS storage pool version " SPA_VERSION_STRING, - &zfs_dev_ops -}; - -static struct modlinkage modlinkage = { - MODREV_1, - (void *)&zfs_modlfs, - (void *)&zfs_modldrv, - NULL -}; - - -uint_t zfs_fsyncer_key; -extern uint_t rrw_tsd_key; - -int -_init(void) -{ - int error; - - spa_init(FREAD | FWRITE); - zfs_init(); - zvol_init(); - - if ((error = mod_install(&modlinkage)) != 0) { - zvol_fini(); - zfs_fini(); - spa_fini(); - return (error); - } - - tsd_create(&zfs_fsyncer_key, NULL); - tsd_create(&rrw_tsd_key, NULL); - - error = ldi_ident_from_mod(&modlinkage, &zfs_li); - ASSERT(error == 0); - mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); - - return (0); -} - -int -_fini(void) -{ - int error; - - if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) - return (EBUSY); - - if ((error = mod_remove(&modlinkage)) != 0) - return (error); - - zvol_fini(); - zfs_fini(); - spa_fini(); - if (zfs_nfsshare_inited) - (void) ddi_modclose(nfs_mod); - if (zfs_smbshare_inited) - (void) ddi_modclose(smbsrv_mod); - if (zfs_nfsshare_inited || zfs_smbshare_inited) - (void) ddi_modclose(sharefs_mod); - - tsd_destroy(&zfs_fsyncer_key); - ldi_ident_release(zfs_li); - zfs_li = NULL; - mutex_destroy(&zfs_share_lock); - - return (error); -} - -int -_info(struct modinfo *modinfop) -{ - return (mod_info(&modlinkage, modinfop)); -} |