1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21f3861e1aSahl 22fa9e4066Sahrens /* 23d1672efbSMarcel Telka * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 24dc7cd546SMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2533cde0d0SMatthew Ahrens * Copyright (c) 2014 by Delphix. All rights reserved. 26*88f61deeSIgor Kozhukhov * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> 27fa9e4066Sahrens */ 28fa9e4066Sahrens 29fa9e4066Sahrens /* 30fa9e4066Sahrens * Routines to manage ZFS mounts. We separate all the nasty routines that have 31f3861e1aSahl * to deal with the OS. The following functions are the main entry points -- 32f3861e1aSahl * they are used by mount and unmount and when changing a filesystem's 33f3861e1aSahl * mountpoint. 34fa9e4066Sahrens * 35fa9e4066Sahrens * zfs_is_mounted() 36fa9e4066Sahrens * zfs_mount() 37fa9e4066Sahrens * zfs_unmount() 38fa9e4066Sahrens * zfs_unmountall() 39fa9e4066Sahrens * 40f3861e1aSahl * This file also contains the functions used to manage sharing filesystems via 41f3861e1aSahl * NFS and iSCSI: 42fa9e4066Sahrens * 43fa9e4066Sahrens * zfs_is_shared() 44fa9e4066Sahrens * zfs_share() 45fa9e4066Sahrens * zfs_unshare() 46f3861e1aSahl * 47f3861e1aSahl * zfs_is_shared_nfs() 48da6c28aaSamw * zfs_is_shared_smb() 49da6c28aaSamw * zfs_share_proto() 50da6c28aaSamw * zfs_shareall(); 51da6c28aaSamw * zfs_unshare_nfs() 52da6c28aaSamw * zfs_unshare_smb() 53da6c28aaSamw * zfs_unshareall_nfs() 54da6c28aaSamw * zfs_unshareall_smb() 55da6c28aaSamw * zfs_unshareall() 56da6c28aaSamw * zfs_unshareall_bypath() 573bb79becSeschrock * 583bb79becSeschrock * The following functions are available for pool consumers, and will 59f3861e1aSahl * mount/unmount and share/unshare all datasets within pool: 603bb79becSeschrock * 61f3861e1aSahl * zpool_enable_datasets() 62f3861e1aSahl * zpool_disable_datasets() 63fa9e4066Sahrens */ 64fa9e4066Sahrens 65fa9e4066Sahrens #include <dirent.h> 66d8d59944Sahl #include <dlfcn.h> 67fa9e4066Sahrens #include <errno.h> 68fa9e4066Sahrens #include <libgen.h> 69fa9e4066Sahrens #include <libintl.h> 70fa9e4066Sahrens #include <stdio.h> 71fa9e4066Sahrens #include <stdlib.h> 72fa9e4066Sahrens #include <strings.h> 73fa9e4066Sahrens #include <unistd.h> 74fa9e4066Sahrens #include <zone.h> 75fa9e4066Sahrens #include <sys/mntent.h> 76fa9e4066Sahrens #include <sys/mount.h> 77fa9e4066Sahrens #include <sys/stat.h> 78fa9e4066Sahrens 79fa9e4066Sahrens #include <libzfs.h> 80fa9e4066Sahrens 81fa9e4066Sahrens #include "libzfs_impl.h" 82fa9e4066Sahrens 8367331909Sdougm #include <libshare.h> 8467331909Sdougm #include <sys/systeminfo.h> 8567331909Sdougm #define MAXISALEN 257 /* based on sysinfo(2) man page */ 8667331909Sdougm 87da6c28aaSamw static int zfs_share_proto(zfs_handle_t *, zfs_share_proto_t *); 88da6c28aaSamw zfs_share_type_t zfs_is_shared_proto(zfs_handle_t *, char **, 89da6c28aaSamw zfs_share_proto_t); 90da6c28aaSamw 91da6c28aaSamw /* 92da6c28aaSamw * The share protocols table must be in the same order as the zfs_share_prot_t 93da6c28aaSamw * enum in libzfs_impl.h 94da6c28aaSamw */ 95da6c28aaSamw typedef struct { 96da6c28aaSamw zfs_prop_t p_prop; 97da6c28aaSamw char *p_name; 98da6c28aaSamw int p_share_err; 99da6c28aaSamw int p_unshare_err; 100da6c28aaSamw } proto_table_t; 101da6c28aaSamw 102da6c28aaSamw proto_table_t proto_table[PROTO_END] = { 103da6c28aaSamw {ZFS_PROP_SHARENFS, "nfs", EZFS_SHARENFSFAILED, EZFS_UNSHARENFSFAILED}, 104da6c28aaSamw {ZFS_PROP_SHARESMB, "smb", EZFS_SHARESMBFAILED, EZFS_UNSHARESMBFAILED}, 105da6c28aaSamw }; 106da6c28aaSamw 107da6c28aaSamw zfs_share_proto_t nfs_only[] = { 108da6c28aaSamw PROTO_NFS, 109da6c28aaSamw PROTO_END 110da6c28aaSamw }; 111da6c28aaSamw 112da6c28aaSamw zfs_share_proto_t smb_only[] = { 113da6c28aaSamw PROTO_SMB, 114da6c28aaSamw PROTO_END 115da6c28aaSamw }; 116da6c28aaSamw zfs_share_proto_t share_all_proto[] = { 117da6c28aaSamw PROTO_NFS, 118da6c28aaSamw PROTO_SMB, 119da6c28aaSamw PROTO_END 120da6c28aaSamw }; 121da6c28aaSamw 122fa9e4066Sahrens /* 123da6c28aaSamw * Search the sharetab for the given mountpoint and protocol, returning 124da6c28aaSamw * a zfs_share_type_t value. 125fa9e4066Sahrens */ 126da6c28aaSamw static zfs_share_type_t 127da6c28aaSamw is_shared(libzfs_handle_t *hdl, const char *mountpoint, zfs_share_proto_t proto) 128fa9e4066Sahrens { 129fa9e4066Sahrens char buf[MAXPATHLEN], *tab; 130da6c28aaSamw char *ptr; 131fa9e4066Sahrens 13299653d4eSeschrock if (hdl->libzfs_sharetab == NULL) 133da6c28aaSamw return (SHARED_NOT_SHARED); 134fa9e4066Sahrens 13599653d4eSeschrock (void) fseek(hdl->libzfs_sharetab, 0, SEEK_SET); 136fa9e4066Sahrens 13799653d4eSeschrock while (fgets(buf, sizeof (buf), hdl->libzfs_sharetab) != NULL) { 138fa9e4066Sahrens 139fa9e4066Sahrens /* the mountpoint is the first entry on each line */ 140da6c28aaSamw if ((tab = strchr(buf, '\t')) == NULL) 141da6c28aaSamw continue; 142da6c28aaSamw 143da6c28aaSamw *tab = '\0'; 144da6c28aaSamw if (strcmp(buf, mountpoint) == 0) { 145da6c28aaSamw /* 146da6c28aaSamw * the protocol field is the third field 147da6c28aaSamw * skip over second field 148da6c28aaSamw */ 149da6c28aaSamw ptr = ++tab; 150da6c28aaSamw if ((tab = strchr(ptr, '\t')) == NULL) 151da6c28aaSamw continue; 152da6c28aaSamw ptr = ++tab; 153da6c28aaSamw if ((tab = strchr(ptr, '\t')) == NULL) 154da6c28aaSamw continue; 155fa9e4066Sahrens *tab = '\0'; 156da6c28aaSamw if (strcmp(ptr, 157da6c28aaSamw proto_table[proto].p_name) == 0) { 158da6c28aaSamw switch (proto) { 159da6c28aaSamw case PROTO_NFS: 160da6c28aaSamw return (SHARED_NFS); 161da6c28aaSamw case PROTO_SMB: 162da6c28aaSamw return (SHARED_SMB); 163da6c28aaSamw default: 164da6c28aaSamw return (0); 165da6c28aaSamw } 166da6c28aaSamw } 167fa9e4066Sahrens } 168fa9e4066Sahrens } 169fa9e4066Sahrens 170da6c28aaSamw return (SHARED_NOT_SHARED); 171fa9e4066Sahrens } 172fa9e4066Sahrens 173fa9e4066Sahrens /* 17499653d4eSeschrock * Returns true if the specified directory is empty. If we can't open the 17599653d4eSeschrock * directory at all, return true so that the mount can fail with a more 176fa9e4066Sahrens * informative error message. 177fa9e4066Sahrens */ 17899653d4eSeschrock static boolean_t 179fa9e4066Sahrens dir_is_empty(const char *dirname) 180fa9e4066Sahrens { 181fa9e4066Sahrens DIR *dirp; 182fa9e4066Sahrens struct dirent64 *dp; 183fa9e4066Sahrens 184fa9e4066Sahrens if ((dirp = opendir(dirname)) == NULL) 18599653d4eSeschrock return (B_TRUE); 186fa9e4066Sahrens 187fa9e4066Sahrens while ((dp = readdir64(dirp)) != NULL) { 188fa9e4066Sahrens 189fa9e4066Sahrens if (strcmp(dp->d_name, ".") == 0 || 190fa9e4066Sahrens strcmp(dp->d_name, "..") == 0) 191fa9e4066Sahrens continue; 192fa9e4066Sahrens 193fa9e4066Sahrens (void) closedir(dirp); 19499653d4eSeschrock return (B_FALSE); 195fa9e4066Sahrens } 196fa9e4066Sahrens 197fa9e4066Sahrens (void) closedir(dirp); 19899653d4eSeschrock return (B_TRUE); 199fa9e4066Sahrens } 200fa9e4066Sahrens 201fa9e4066Sahrens /* 202fa9e4066Sahrens * Checks to see if the mount is active. If the filesystem is mounted, we fill 203fa9e4066Sahrens * in 'where' with the current mountpoint, and return 1. Otherwise, we return 204fa9e4066Sahrens * 0. 205fa9e4066Sahrens */ 20699653d4eSeschrock boolean_t 20755434c77Sek is_mounted(libzfs_handle_t *zfs_hdl, const char *special, char **where) 208fa9e4066Sahrens { 209ebedde84SEric Taylor struct mnttab entry; 210fa9e4066Sahrens 211ebedde84SEric Taylor if (libzfs_mnttab_find(zfs_hdl, special, &entry) != 0) 21299653d4eSeschrock return (B_FALSE); 213fa9e4066Sahrens 214fa9e4066Sahrens if (where != NULL) 21555434c77Sek *where = zfs_strdup(zfs_hdl, entry.mnt_mountp); 216fa9e4066Sahrens 21799653d4eSeschrock return (B_TRUE); 218fa9e4066Sahrens } 219fa9e4066Sahrens 22055434c77Sek boolean_t 22155434c77Sek zfs_is_mounted(zfs_handle_t *zhp, char **where) 22255434c77Sek { 22355434c77Sek return (is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where)); 22455434c77Sek } 22555434c77Sek 226e9dbad6fSeschrock /* 227e9dbad6fSeschrock * Returns true if the given dataset is mountable, false otherwise. Returns the 228e9dbad6fSeschrock * mountpoint in 'buf'. 229e9dbad6fSeschrock */ 230e9dbad6fSeschrock static boolean_t 231e9dbad6fSeschrock zfs_is_mountable(zfs_handle_t *zhp, char *buf, size_t buflen, 232990b4856Slling zprop_source_t *source) 233e9dbad6fSeschrock { 234e9dbad6fSeschrock char sourceloc[ZFS_MAXNAMELEN]; 235990b4856Slling zprop_source_t sourcetype; 236e9dbad6fSeschrock 237e9dbad6fSeschrock if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type)) 238e9dbad6fSeschrock return (B_FALSE); 239e9dbad6fSeschrock 240e9dbad6fSeschrock verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen, 241e9dbad6fSeschrock &sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0); 242e9dbad6fSeschrock 243e9dbad6fSeschrock if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 || 244e9dbad6fSeschrock strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0) 245e9dbad6fSeschrock return (B_FALSE); 246e9dbad6fSeschrock 247a227b7f4Shs if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF) 248e9dbad6fSeschrock return (B_FALSE); 249e9dbad6fSeschrock 250e9dbad6fSeschrock if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) && 251e9dbad6fSeschrock getzoneid() == GLOBAL_ZONEID) 252e9dbad6fSeschrock return (B_FALSE); 253e9dbad6fSeschrock 254e9dbad6fSeschrock if (source) 255e9dbad6fSeschrock *source = sourcetype; 256e9dbad6fSeschrock 257e9dbad6fSeschrock return (B_TRUE); 258e9dbad6fSeschrock } 259e9dbad6fSeschrock 260fa9e4066Sahrens /* 261fa9e4066Sahrens * Mount the given filesystem. 262fa9e4066Sahrens */ 263fa9e4066Sahrens int 264fa9e4066Sahrens zfs_mount(zfs_handle_t *zhp, const char *options, int flags) 265fa9e4066Sahrens { 266fa9e4066Sahrens struct stat buf; 267fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 268fa9e4066Sahrens char mntopts[MNT_LINE_MAX]; 26999653d4eSeschrock libzfs_handle_t *hdl = zhp->zfs_hdl; 270fa9e4066Sahrens 271fa9e4066Sahrens if (options == NULL) 272fa9e4066Sahrens mntopts[0] = '\0'; 273fa9e4066Sahrens else 274fa9e4066Sahrens (void) strlcpy(mntopts, options, sizeof (mntopts)); 275fa9e4066Sahrens 276f9af39baSGeorge Wilson /* 277f9af39baSGeorge Wilson * If the pool is imported read-only then all mounts must be read-only 278f9af39baSGeorge Wilson */ 279f9af39baSGeorge Wilson if (zpool_get_prop_int(zhp->zpool_hdl, ZPOOL_PROP_READONLY, NULL)) 280f9af39baSGeorge Wilson flags |= MS_RDONLY; 281f9af39baSGeorge Wilson 282e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL)) 28399653d4eSeschrock return (0); 284fa9e4066Sahrens 285fa9e4066Sahrens /* Create the directory if it doesn't already exist */ 286fa9e4066Sahrens if (lstat(mountpoint, &buf) != 0) { 287fa9e4066Sahrens if (mkdirp(mountpoint, 0755) != 0) { 28899653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 28999653d4eSeschrock "failed to create mountpoint")); 290ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 29199653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), 29299653d4eSeschrock mountpoint)); 293fa9e4066Sahrens } 294fa9e4066Sahrens } 295fa9e4066Sahrens 296fa9e4066Sahrens /* 297fa9e4066Sahrens * Determine if the mountpoint is empty. If so, refuse to perform the 298fa9e4066Sahrens * mount. We don't perform this check if MS_OVERLAY is specified, which 299fa9e4066Sahrens * would defeat the point. We also avoid this check if 'remount' is 300fa9e4066Sahrens * specified. 301fa9e4066Sahrens */ 302fa9e4066Sahrens if ((flags & MS_OVERLAY) == 0 && 303fa9e4066Sahrens strstr(mntopts, MNTOPT_REMOUNT) == NULL && 304fa9e4066Sahrens !dir_is_empty(mountpoint)) { 30599653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 30699653d4eSeschrock "directory is not empty")); 307ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 30899653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), mountpoint)); 309fa9e4066Sahrens } 310fa9e4066Sahrens 311fa9e4066Sahrens /* perform the mount */ 312fa9e4066Sahrens if (mount(zfs_get_name(zhp), mountpoint, MS_OPTIONSTR | flags, 313fa9e4066Sahrens MNTTYPE_ZFS, NULL, 0, mntopts, sizeof (mntopts)) != 0) { 314fa9e4066Sahrens /* 315fa9e4066Sahrens * Generic errors are nasty, but there are just way too many 316fa9e4066Sahrens * from mount(), and they're well-understood. We pick a few 317fa9e4066Sahrens * common ones to improve upon. 318fa9e4066Sahrens */ 319d8689a57Sdougm if (errno == EBUSY) { 32099653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 32199653d4eSeschrock "mountpoint or dataset is busy")); 322ecd6cf80Smarks } else if (errno == EPERM) { 323ecd6cf80Smarks zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 324ecd6cf80Smarks "Insufficient privileges")); 32554a91118SChris Kirby } else if (errno == ENOTSUP) { 32654a91118SChris Kirby char buf[256]; 327dc7cd546SMark Shellenbaum int spa_version; 32854a91118SChris Kirby 329dc7cd546SMark Shellenbaum VERIFY(zfs_spa_version(zhp, &spa_version) == 0); 33054a91118SChris Kirby (void) snprintf(buf, sizeof (buf), 331dc7cd546SMark Shellenbaum dgettext(TEXT_DOMAIN, "Can't mount a version %lld " 332dc7cd546SMark Shellenbaum "file system on a version %d pool. Pool must be" 333dc7cd546SMark Shellenbaum " upgraded to mount this file system."), 33454a91118SChris Kirby (u_longlong_t)zfs_prop_get_int(zhp, 335dc7cd546SMark Shellenbaum ZFS_PROP_VERSION), spa_version); 33654a91118SChris Kirby zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, buf)); 337d8689a57Sdougm } else { 33899653d4eSeschrock zfs_error_aux(hdl, strerror(errno)); 339d8689a57Sdougm } 340ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 34199653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), 34299653d4eSeschrock zhp->zfs_name)); 343fa9e4066Sahrens } 344fa9e4066Sahrens 345ebedde84SEric Taylor /* add the mounted entry into our cache */ 346ebedde84SEric Taylor libzfs_mnttab_add(hdl, zfs_get_name(zhp), mountpoint, 347ebedde84SEric Taylor mntopts); 348fa9e4066Sahrens return (0); 349fa9e4066Sahrens } 350fa9e4066Sahrens 3513bb79becSeschrock /* 3523bb79becSeschrock * Unmount a single filesystem. 3533bb79becSeschrock */ 3543bb79becSeschrock static int 3553bb79becSeschrock unmount_one(libzfs_handle_t *hdl, const char *mountpoint, int flags) 3563bb79becSeschrock { 3573bb79becSeschrock if (umount2(mountpoint, flags) != 0) { 3583bb79becSeschrock zfs_error_aux(hdl, strerror(errno)); 359ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UMOUNTFAILED, 3603bb79becSeschrock dgettext(TEXT_DOMAIN, "cannot unmount '%s'"), 3613bb79becSeschrock mountpoint)); 3623bb79becSeschrock } 3633bb79becSeschrock 3643bb79becSeschrock return (0); 3653bb79becSeschrock } 3663bb79becSeschrock 367fa9e4066Sahrens /* 368fa9e4066Sahrens * Unmount the given filesystem. 369fa9e4066Sahrens */ 370fa9e4066Sahrens int 371fa9e4066Sahrens zfs_unmount(zfs_handle_t *zhp, const char *mountpoint, int flags) 372fa9e4066Sahrens { 373ebedde84SEric Taylor libzfs_handle_t *hdl = zhp->zfs_hdl; 374ebedde84SEric Taylor struct mnttab entry; 37567331909Sdougm char *mntpt = NULL; 376fa9e4066Sahrens 377ebedde84SEric Taylor /* check to see if we need to unmount the filesystem */ 378fa9e4066Sahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) && 379ebedde84SEric Taylor libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0)) { 38067331909Sdougm /* 38167331909Sdougm * mountpoint may have come from a call to 38267331909Sdougm * getmnt/getmntany if it isn't NULL. If it is NULL, 383ebedde84SEric Taylor * we know it comes from libzfs_mnttab_find which can 384ebedde84SEric Taylor * then get freed later. We strdup it to play it safe. 38567331909Sdougm */ 386fa9e4066Sahrens if (mountpoint == NULL) 387ebedde84SEric Taylor mntpt = zfs_strdup(hdl, entry.mnt_mountp); 38867331909Sdougm else 389ebedde84SEric Taylor mntpt = zfs_strdup(hdl, mountpoint); 390fa9e4066Sahrens 391fa9e4066Sahrens /* 3923bb79becSeschrock * Unshare and unmount the filesystem 393fa9e4066Sahrens */ 394da6c28aaSamw if (zfs_unshare_proto(zhp, mntpt, share_all_proto) != 0) 395eb66cf86Sth return (-1); 396eb66cf86Sth 397ebedde84SEric Taylor if (unmount_one(hdl, mntpt, flags) != 0) { 39867331909Sdougm free(mntpt); 399da6c28aaSamw (void) zfs_shareall(zhp); 400fa9e4066Sahrens return (-1); 40167331909Sdougm } 402ebedde84SEric Taylor libzfs_mnttab_remove(hdl, zhp->zfs_name); 40367331909Sdougm free(mntpt); 404fa9e4066Sahrens } 405fa9e4066Sahrens 406fa9e4066Sahrens return (0); 407fa9e4066Sahrens } 408fa9e4066Sahrens 409fa9e4066Sahrens /* 410fa9e4066Sahrens * Unmount this filesystem and any children inheriting the mountpoint property. 411fa9e4066Sahrens * To do this, just act like we're changing the mountpoint property, but don't 412fa9e4066Sahrens * remount the filesystems afterwards. 413fa9e4066Sahrens */ 414fa9e4066Sahrens int 415fa9e4066Sahrens zfs_unmountall(zfs_handle_t *zhp, int flags) 416fa9e4066Sahrens { 417fa9e4066Sahrens prop_changelist_t *clp; 418fa9e4066Sahrens int ret; 419fa9e4066Sahrens 4200069fd67STim Haley clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, 0, flags); 421fa9e4066Sahrens if (clp == NULL) 422fa9e4066Sahrens return (-1); 423fa9e4066Sahrens 424fa9e4066Sahrens ret = changelist_prefix(clp); 425fa9e4066Sahrens changelist_free(clp); 426fa9e4066Sahrens 427fa9e4066Sahrens return (ret); 428fa9e4066Sahrens } 429fa9e4066Sahrens 430f3861e1aSahl boolean_t 431f3861e1aSahl zfs_is_shared(zfs_handle_t *zhp) 432f3861e1aSahl { 433da6c28aaSamw zfs_share_type_t rc = 0; 434da6c28aaSamw zfs_share_proto_t *curr_proto; 435da6c28aaSamw 436f3861e1aSahl if (ZFS_IS_VOLUME(zhp)) 437ab003da8SJim Dunham return (B_FALSE); 438f3861e1aSahl 439da6c28aaSamw for (curr_proto = share_all_proto; *curr_proto != PROTO_END; 440da6c28aaSamw curr_proto++) 441da6c28aaSamw rc |= zfs_is_shared_proto(zhp, NULL, *curr_proto); 442da6c28aaSamw 443da6c28aaSamw return (rc ? B_TRUE : B_FALSE); 444f3861e1aSahl } 445f3861e1aSahl 446f3861e1aSahl int 447f3861e1aSahl zfs_share(zfs_handle_t *zhp) 448f3861e1aSahl { 4499d9a58e3SEric Taylor assert(!ZFS_IS_VOLUME(zhp)); 450da6c28aaSamw return (zfs_share_proto(zhp, share_all_proto)); 451f3861e1aSahl } 452f3861e1aSahl 453f3861e1aSahl int 454f3861e1aSahl zfs_unshare(zfs_handle_t *zhp) 455f3861e1aSahl { 4569d9a58e3SEric Taylor assert(!ZFS_IS_VOLUME(zhp)); 457da6c28aaSamw return (zfs_unshareall(zhp)); 458f3861e1aSahl } 459f3861e1aSahl 460fa9e4066Sahrens /* 461fa9e4066Sahrens * Check to see if the filesystem is currently shared. 462fa9e4066Sahrens */ 463da6c28aaSamw zfs_share_type_t 464da6c28aaSamw zfs_is_shared_proto(zfs_handle_t *zhp, char **where, zfs_share_proto_t proto) 465fa9e4066Sahrens { 466fa9e4066Sahrens char *mountpoint; 467da6c28aaSamw zfs_share_type_t rc; 468fa9e4066Sahrens 469fa9e4066Sahrens if (!zfs_is_mounted(zhp, &mountpoint)) 470da6c28aaSamw return (SHARED_NOT_SHARED); 471fa9e4066Sahrens 472*88f61deeSIgor Kozhukhov if ((rc = is_shared(zhp->zfs_hdl, mountpoint, proto)) 473*88f61deeSIgor Kozhukhov != SHARED_NOT_SHARED) { 474fa9e4066Sahrens if (where != NULL) 475fa9e4066Sahrens *where = mountpoint; 476fa9e4066Sahrens else 477fa9e4066Sahrens free(mountpoint); 478da6c28aaSamw return (rc); 479fa9e4066Sahrens } else { 480fa9e4066Sahrens free(mountpoint); 481da6c28aaSamw return (SHARED_NOT_SHARED); 482fa9e4066Sahrens } 483fa9e4066Sahrens } 484fa9e4066Sahrens 485da6c28aaSamw boolean_t 486da6c28aaSamw zfs_is_shared_nfs(zfs_handle_t *zhp, char **where) 487da6c28aaSamw { 488da6c28aaSamw return (zfs_is_shared_proto(zhp, where, 489da6c28aaSamw PROTO_NFS) != SHARED_NOT_SHARED); 490da6c28aaSamw } 491da6c28aaSamw 492da6c28aaSamw boolean_t 493da6c28aaSamw zfs_is_shared_smb(zfs_handle_t *zhp, char **where) 494da6c28aaSamw { 495da6c28aaSamw return (zfs_is_shared_proto(zhp, where, 496da6c28aaSamw PROTO_SMB) != SHARED_NOT_SHARED); 497da6c28aaSamw } 498da6c28aaSamw 49967331909Sdougm /* 50067331909Sdougm * Make sure things will work if libshare isn't installed by using 50167331909Sdougm * wrapper functions that check to see that the pointers to functions 50267331909Sdougm * initialized in _zfs_init_libshare() are actually present. 50367331909Sdougm */ 50467331909Sdougm 50567331909Sdougm static sa_handle_t (*_sa_init)(int); 50667331909Sdougm static void (*_sa_fini)(sa_handle_t); 50767331909Sdougm static sa_share_t (*_sa_find_share)(sa_handle_t, char *); 50867331909Sdougm static int (*_sa_enable_share)(sa_share_t, char *); 50967331909Sdougm static int (*_sa_disable_share)(sa_share_t, char *); 51067331909Sdougm static char *(*_sa_errorstr)(int); 51167331909Sdougm static int (*_sa_parse_legacy_options)(sa_group_t, char *, char *); 5125b6e0c46Sdougm static boolean_t (*_sa_needs_refresh)(sa_handle_t *); 5135b6e0c46Sdougm static libzfs_handle_t *(*_sa_get_zfs_handle)(sa_handle_t); 5145b6e0c46Sdougm static int (*_sa_zfs_process_share)(sa_handle_t, sa_group_t, sa_share_t, 5155b6e0c46Sdougm char *, char *, zprop_source_t, char *, char *, char *); 5165b6e0c46Sdougm static void (*_sa_update_sharetab_ts)(sa_handle_t); 51767331909Sdougm 51867331909Sdougm /* 51967331909Sdougm * _zfs_init_libshare() 52067331909Sdougm * 52167331909Sdougm * Find the libshare.so.1 entry points that we use here and save the 52267331909Sdougm * values to be used later. This is triggered by the runtime loader. 52367331909Sdougm * Make sure the correct ISA version is loaded. 52467331909Sdougm */ 5255b6e0c46Sdougm 52667331909Sdougm #pragma init(_zfs_init_libshare) 52767331909Sdougm static void 52867331909Sdougm _zfs_init_libshare(void) 52967331909Sdougm { 53067331909Sdougm void *libshare; 53167331909Sdougm char path[MAXPATHLEN]; 53267331909Sdougm char isa[MAXISALEN]; 53367331909Sdougm 53467331909Sdougm #if defined(_LP64) 53567331909Sdougm if (sysinfo(SI_ARCHITECTURE_64, isa, MAXISALEN) == -1) 536d8689a57Sdougm isa[0] = '\0'; 53767331909Sdougm #else 53867331909Sdougm isa[0] = '\0'; 53967331909Sdougm #endif 54067331909Sdougm (void) snprintf(path, MAXPATHLEN, 541d8689a57Sdougm "/usr/lib/%s/libshare.so.1", isa); 54267331909Sdougm 54367331909Sdougm if ((libshare = dlopen(path, RTLD_LAZY | RTLD_GLOBAL)) != NULL) { 544d8689a57Sdougm _sa_init = (sa_handle_t (*)(int))dlsym(libshare, "sa_init"); 545d8689a57Sdougm _sa_fini = (void (*)(sa_handle_t))dlsym(libshare, "sa_fini"); 546d8689a57Sdougm _sa_find_share = (sa_share_t (*)(sa_handle_t, char *)) 547d8689a57Sdougm dlsym(libshare, "sa_find_share"); 548d8689a57Sdougm _sa_enable_share = (int (*)(sa_share_t, char *))dlsym(libshare, 549d8689a57Sdougm "sa_enable_share"); 550d8689a57Sdougm _sa_disable_share = (int (*)(sa_share_t, char *))dlsym(libshare, 551d8689a57Sdougm "sa_disable_share"); 552d8689a57Sdougm _sa_errorstr = (char *(*)(int))dlsym(libshare, "sa_errorstr"); 553d8689a57Sdougm _sa_parse_legacy_options = (int (*)(sa_group_t, char *, char *)) 554d8689a57Sdougm dlsym(libshare, "sa_parse_legacy_options"); 5555b6e0c46Sdougm _sa_needs_refresh = (boolean_t (*)(sa_handle_t *)) 5565b6e0c46Sdougm dlsym(libshare, "sa_needs_refresh"); 5575b6e0c46Sdougm _sa_get_zfs_handle = (libzfs_handle_t *(*)(sa_handle_t)) 5585b6e0c46Sdougm dlsym(libshare, "sa_get_zfs_handle"); 5595b6e0c46Sdougm _sa_zfs_process_share = (int (*)(sa_handle_t, sa_group_t, 5605b6e0c46Sdougm sa_share_t, char *, char *, zprop_source_t, char *, 5615b6e0c46Sdougm char *, char *))dlsym(libshare, "sa_zfs_process_share"); 5625b6e0c46Sdougm _sa_update_sharetab_ts = (void (*)(sa_handle_t)) 5635b6e0c46Sdougm dlsym(libshare, "sa_update_sharetab_ts"); 56457b448deSdougm if (_sa_init == NULL || _sa_fini == NULL || 56557b448deSdougm _sa_find_share == NULL || _sa_enable_share == NULL || 56657b448deSdougm _sa_disable_share == NULL || _sa_errorstr == NULL || 5675b6e0c46Sdougm _sa_parse_legacy_options == NULL || 5685b6e0c46Sdougm _sa_needs_refresh == NULL || _sa_get_zfs_handle == NULL || 5695b6e0c46Sdougm _sa_zfs_process_share == NULL || 5705b6e0c46Sdougm _sa_update_sharetab_ts == NULL) { 57157b448deSdougm _sa_init = NULL; 57257b448deSdougm _sa_fini = NULL; 57357b448deSdougm _sa_disable_share = NULL; 57457b448deSdougm _sa_enable_share = NULL; 57557b448deSdougm _sa_errorstr = NULL; 57657b448deSdougm _sa_parse_legacy_options = NULL; 57757b448deSdougm (void) dlclose(libshare); 5785b6e0c46Sdougm _sa_needs_refresh = NULL; 5795b6e0c46Sdougm _sa_get_zfs_handle = NULL; 5805b6e0c46Sdougm _sa_zfs_process_share = NULL; 5815b6e0c46Sdougm _sa_update_sharetab_ts = NULL; 58257b448deSdougm } 58367331909Sdougm } 58467331909Sdougm } 58567331909Sdougm 58667331909Sdougm /* 58767331909Sdougm * zfs_init_libshare(zhandle, service) 58867331909Sdougm * 58967331909Sdougm * Initialize the libshare API if it hasn't already been initialized. 59067331909Sdougm * In all cases it returns 0 if it succeeded and an error if not. The 59167331909Sdougm * service value is which part(s) of the API to initialize and is a 59267331909Sdougm * direct map to the libshare sa_init(service) interface. 59367331909Sdougm */ 59467331909Sdougm int 59567331909Sdougm zfs_init_libshare(libzfs_handle_t *zhandle, int service) 59667331909Sdougm { 59767331909Sdougm int ret = SA_OK; 59867331909Sdougm 599d8689a57Sdougm if (_sa_init == NULL) 600d8689a57Sdougm ret = SA_CONFIG_ERR; 601d8689a57Sdougm 6025b6e0c46Sdougm if (ret == SA_OK && zhandle->libzfs_shareflags & ZFSSHARE_MISS) { 6035b6e0c46Sdougm /* 6045b6e0c46Sdougm * We had a cache miss. Most likely it is a new ZFS 6055b6e0c46Sdougm * dataset that was just created. We want to make sure 6065b6e0c46Sdougm * so check timestamps to see if a different process 6075b6e0c46Sdougm * has updated any of the configuration. If there was 6085b6e0c46Sdougm * some non-ZFS change, we need to re-initialize the 6095b6e0c46Sdougm * internal cache. 6105b6e0c46Sdougm */ 6115b6e0c46Sdougm zhandle->libzfs_shareflags &= ~ZFSSHARE_MISS; 6125b6e0c46Sdougm if (_sa_needs_refresh != NULL && 6135b6e0c46Sdougm _sa_needs_refresh(zhandle->libzfs_sharehdl)) { 6145b6e0c46Sdougm zfs_uninit_libshare(zhandle); 6155b6e0c46Sdougm zhandle->libzfs_sharehdl = _sa_init(service); 6165b6e0c46Sdougm } 6175b6e0c46Sdougm } 6185b6e0c46Sdougm 619d8689a57Sdougm if (ret == SA_OK && zhandle && zhandle->libzfs_sharehdl == NULL) 620d8689a57Sdougm zhandle->libzfs_sharehdl = _sa_init(service); 621d8689a57Sdougm 622d8689a57Sdougm if (ret == SA_OK && zhandle->libzfs_sharehdl == NULL) 623d8689a57Sdougm ret = SA_NO_MEMORY; 624d8689a57Sdougm 62567331909Sdougm return (ret); 62667331909Sdougm } 62767331909Sdougm 62867331909Sdougm /* 62967331909Sdougm * zfs_uninit_libshare(zhandle) 63067331909Sdougm * 63167331909Sdougm * Uninitialize the libshare API if it hasn't already been 63267331909Sdougm * uninitialized. It is OK to call multiple times. 63367331909Sdougm */ 63467331909Sdougm void 63567331909Sdougm zfs_uninit_libshare(libzfs_handle_t *zhandle) 63667331909Sdougm { 63767331909Sdougm if (zhandle != NULL && zhandle->libzfs_sharehdl != NULL) { 638d8689a57Sdougm if (_sa_fini != NULL) 639d8689a57Sdougm _sa_fini(zhandle->libzfs_sharehdl); 640d8689a57Sdougm zhandle->libzfs_sharehdl = NULL; 64167331909Sdougm } 64267331909Sdougm } 64367331909Sdougm 64467331909Sdougm /* 64567331909Sdougm * zfs_parse_options(options, proto) 64667331909Sdougm * 64767331909Sdougm * Call the legacy parse interface to get the protocol specific 64867331909Sdougm * options using the NULL arg to indicate that this is a "parse" only. 64967331909Sdougm */ 65067331909Sdougm int 651da6c28aaSamw zfs_parse_options(char *options, zfs_share_proto_t proto) 65267331909Sdougm { 6533cb34c60Sahrens if (_sa_parse_legacy_options != NULL) { 6543cb34c60Sahrens return (_sa_parse_legacy_options(NULL, options, 6553cb34c60Sahrens proto_table[proto].p_name)); 6563cb34c60Sahrens } 6573cb34c60Sahrens return (SA_CONFIG_ERR); 65867331909Sdougm } 65967331909Sdougm 66067331909Sdougm /* 66167331909Sdougm * zfs_sa_find_share(handle, path) 66267331909Sdougm * 66367331909Sdougm * wrapper around sa_find_share to find a share path in the 66467331909Sdougm * configuration. 66567331909Sdougm */ 66667331909Sdougm static sa_share_t 66767331909Sdougm zfs_sa_find_share(sa_handle_t handle, char *path) 66867331909Sdougm { 66967331909Sdougm if (_sa_find_share != NULL) 670d8689a57Sdougm return (_sa_find_share(handle, path)); 67167331909Sdougm return (NULL); 67267331909Sdougm } 67367331909Sdougm 67467331909Sdougm /* 67567331909Sdougm * zfs_sa_enable_share(share, proto) 67667331909Sdougm * 67767331909Sdougm * Wrapper for sa_enable_share which enables a share for a specified 67867331909Sdougm * protocol. 67967331909Sdougm */ 68067331909Sdougm static int 68167331909Sdougm zfs_sa_enable_share(sa_share_t share, char *proto) 68267331909Sdougm { 68367331909Sdougm if (_sa_enable_share != NULL) 684d8689a57Sdougm return (_sa_enable_share(share, proto)); 68567331909Sdougm return (SA_CONFIG_ERR); 68667331909Sdougm } 68767331909Sdougm 68867331909Sdougm /* 68967331909Sdougm * zfs_sa_disable_share(share, proto) 69067331909Sdougm * 69167331909Sdougm * Wrapper for sa_enable_share which disables a share for a specified 69267331909Sdougm * protocol. 69367331909Sdougm */ 69467331909Sdougm static int 69567331909Sdougm zfs_sa_disable_share(sa_share_t share, char *proto) 69667331909Sdougm { 69767331909Sdougm if (_sa_disable_share != NULL) 698d8689a57Sdougm return (_sa_disable_share(share, proto)); 69967331909Sdougm return (SA_CONFIG_ERR); 70067331909Sdougm } 70167331909Sdougm 702fa9e4066Sahrens /* 703da6c28aaSamw * Share the given filesystem according to the options in the specified 704da6c28aaSamw * protocol specific properties (sharenfs, sharesmb). We rely 70567331909Sdougm * on "libshare" to the dirty work for us. 706fa9e4066Sahrens */ 707da6c28aaSamw static int 708da6c28aaSamw zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto) 709fa9e4066Sahrens { 710fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 711fa9e4066Sahrens char shareopts[ZFS_MAXPROPLEN]; 7125b6e0c46Sdougm char sourcestr[ZFS_MAXPROPLEN]; 71399653d4eSeschrock libzfs_handle_t *hdl = zhp->zfs_hdl; 71467331909Sdougm sa_share_t share; 715da6c28aaSamw zfs_share_proto_t *curr_proto; 7165b6e0c46Sdougm zprop_source_t sourcetype; 71767331909Sdougm int ret; 718fa9e4066Sahrens 719e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL)) 720fa9e4066Sahrens return (0); 721fa9e4066Sahrens 722da6c28aaSamw for (curr_proto = proto; *curr_proto != PROTO_END; curr_proto++) { 723da6c28aaSamw /* 724da6c28aaSamw * Return success if there are no share options. 725da6c28aaSamw */ 726da6c28aaSamw if (zfs_prop_get(zhp, proto_table[*curr_proto].p_prop, 7275b6e0c46Sdougm shareopts, sizeof (shareopts), &sourcetype, sourcestr, 7285b6e0c46Sdougm ZFS_MAXPROPLEN, B_FALSE) != 0 || 7295b6e0c46Sdougm strcmp(shareopts, "off") == 0) 730da6c28aaSamw continue; 731da6c28aaSamw 73233cde0d0SMatthew Ahrens ret = zfs_init_libshare(hdl, SA_INIT_SHARE_API); 73333cde0d0SMatthew Ahrens if (ret != SA_OK) { 73433cde0d0SMatthew Ahrens (void) zfs_error_fmt(hdl, EZFS_SHARENFSFAILED, 73533cde0d0SMatthew Ahrens dgettext(TEXT_DOMAIN, "cannot share '%s': %s"), 73633cde0d0SMatthew Ahrens zfs_get_name(zhp), _sa_errorstr != NULL ? 73733cde0d0SMatthew Ahrens _sa_errorstr(ret) : ""); 73833cde0d0SMatthew Ahrens return (-1); 73933cde0d0SMatthew Ahrens } 74033cde0d0SMatthew Ahrens 741da6c28aaSamw /* 742da6c28aaSamw * If the 'zoned' property is set, then zfs_is_mountable() 743da6c28aaSamw * will have already bailed out if we are in the global zone. 744da6c28aaSamw * But local zones cannot be NFS servers, so we ignore it for 745da6c28aaSamw * local zones as well. 746da6c28aaSamw */ 747da6c28aaSamw if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) 748da6c28aaSamw continue; 749da6c28aaSamw 750da6c28aaSamw share = zfs_sa_find_share(hdl->libzfs_sharehdl, mountpoint); 7515b6e0c46Sdougm if (share == NULL) { 7525b6e0c46Sdougm /* 7535b6e0c46Sdougm * This may be a new file system that was just 7545b6e0c46Sdougm * created so isn't in the internal cache 7555b6e0c46Sdougm * (second time through). Rather than 7565b6e0c46Sdougm * reloading the entire configuration, we can 7575b6e0c46Sdougm * assume ZFS has done the checking and it is 7585b6e0c46Sdougm * safe to add this to the internal 7595b6e0c46Sdougm * configuration. 7605b6e0c46Sdougm */ 7615b6e0c46Sdougm if (_sa_zfs_process_share(hdl->libzfs_sharehdl, 7625b6e0c46Sdougm NULL, NULL, mountpoint, 7635b6e0c46Sdougm proto_table[*curr_proto].p_name, sourcetype, 7645b6e0c46Sdougm shareopts, sourcestr, zhp->zfs_name) != SA_OK) { 7655b6e0c46Sdougm (void) zfs_error_fmt(hdl, 7665b6e0c46Sdougm proto_table[*curr_proto].p_share_err, 7675b6e0c46Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s'"), 7685b6e0c46Sdougm zfs_get_name(zhp)); 7695b6e0c46Sdougm return (-1); 7705b6e0c46Sdougm } 7715b6e0c46Sdougm hdl->libzfs_shareflags |= ZFSSHARE_MISS; 7725b6e0c46Sdougm share = zfs_sa_find_share(hdl->libzfs_sharehdl, 7735b6e0c46Sdougm mountpoint); 7745b6e0c46Sdougm } 775da6c28aaSamw if (share != NULL) { 776da6c28aaSamw int err; 777da6c28aaSamw err = zfs_sa_enable_share(share, 778da6c28aaSamw proto_table[*curr_proto].p_name); 779da6c28aaSamw if (err != SA_OK) { 780da6c28aaSamw (void) zfs_error_fmt(hdl, 781da6c28aaSamw proto_table[*curr_proto].p_share_err, 782da6c28aaSamw dgettext(TEXT_DOMAIN, "cannot share '%s'"), 783da6c28aaSamw zfs_get_name(zhp)); 784da6c28aaSamw return (-1); 785da6c28aaSamw } 786da6c28aaSamw } else { 787da6c28aaSamw (void) zfs_error_fmt(hdl, 788da6c28aaSamw proto_table[*curr_proto].p_share_err, 789d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s'"), 790d8689a57Sdougm zfs_get_name(zhp)); 791d8689a57Sdougm return (-1); 792d8689a57Sdougm } 793fa9e4066Sahrens 794da6c28aaSamw } 795fa9e4066Sahrens return (0); 796fa9e4066Sahrens } 797fa9e4066Sahrens 798da6c28aaSamw 799da6c28aaSamw int 800da6c28aaSamw zfs_share_nfs(zfs_handle_t *zhp) 801da6c28aaSamw { 802da6c28aaSamw return (zfs_share_proto(zhp, nfs_only)); 803da6c28aaSamw } 804da6c28aaSamw 805da6c28aaSamw int 806da6c28aaSamw zfs_share_smb(zfs_handle_t *zhp) 807da6c28aaSamw { 808da6c28aaSamw return (zfs_share_proto(zhp, smb_only)); 809da6c28aaSamw } 810da6c28aaSamw 811da6c28aaSamw int 812da6c28aaSamw zfs_shareall(zfs_handle_t *zhp) 813da6c28aaSamw { 814da6c28aaSamw return (zfs_share_proto(zhp, share_all_proto)); 815da6c28aaSamw } 816da6c28aaSamw 8173bb79becSeschrock /* 8183bb79becSeschrock * Unshare a filesystem by mountpoint. 8193bb79becSeschrock */ 8203bb79becSeschrock static int 821da6c28aaSamw unshare_one(libzfs_handle_t *hdl, const char *name, const char *mountpoint, 822da6c28aaSamw zfs_share_proto_t proto) 8233bb79becSeschrock { 82467331909Sdougm sa_share_t share; 82567331909Sdougm int err; 82667331909Sdougm char *mntpt; 8273bb79becSeschrock /* 82867331909Sdougm * Mountpoint could get trashed if libshare calls getmntany 829ebedde84SEric Taylor * which it does during API initialization, so strdup the 83067331909Sdougm * value. 8313bb79becSeschrock */ 83267331909Sdougm mntpt = zfs_strdup(hdl, mountpoint); 8333bb79becSeschrock 83467331909Sdougm /* make sure libshare initialized */ 83567331909Sdougm if ((err = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) { 83667331909Sdougm free(mntpt); /* don't need the copy anymore */ 837d1672efbSMarcel Telka return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 838d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"), 839d8689a57Sdougm name, _sa_errorstr(err))); 84067331909Sdougm } 8413bb79becSeschrock 84267331909Sdougm share = zfs_sa_find_share(hdl->libzfs_sharehdl, mntpt); 84367331909Sdougm free(mntpt); /* don't need the copy anymore */ 8443bb79becSeschrock 84567331909Sdougm if (share != NULL) { 846da6c28aaSamw err = zfs_sa_disable_share(share, proto_table[proto].p_name); 84767331909Sdougm if (err != SA_OK) { 848d8689a57Sdougm return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 849d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"), 850d8689a57Sdougm name, _sa_errorstr(err))); 85167331909Sdougm } 85267331909Sdougm } else { 853ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 854d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': not found"), 855d8689a57Sdougm name)); 8563bb79becSeschrock } 8573bb79becSeschrock return (0); 8583bb79becSeschrock } 8593bb79becSeschrock 860fa9e4066Sahrens /* 861fa9e4066Sahrens * Unshare the given filesystem. 862fa9e4066Sahrens */ 863fa9e4066Sahrens int 864da6c28aaSamw zfs_unshare_proto(zfs_handle_t *zhp, const char *mountpoint, 865da6c28aaSamw zfs_share_proto_t *proto) 866fa9e4066Sahrens { 867ebedde84SEric Taylor libzfs_handle_t *hdl = zhp->zfs_hdl; 868ebedde84SEric Taylor struct mnttab entry; 86967331909Sdougm char *mntpt = NULL; 870fa9e4066Sahrens 871fa9e4066Sahrens /* check to see if need to unmount the filesystem */ 87299653d4eSeschrock rewind(zhp->zfs_hdl->libzfs_mnttab); 873d8689a57Sdougm if (mountpoint != NULL) 874ebedde84SEric Taylor mountpoint = mntpt = zfs_strdup(hdl, mountpoint); 875d8689a57Sdougm 876fa9e4066Sahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) && 877ebedde84SEric Taylor libzfs_mnttab_find(hdl, zfs_get_name(zhp), &entry) == 0)) { 878da6c28aaSamw zfs_share_proto_t *curr_proto; 879fa9e4066Sahrens 880fa9e4066Sahrens if (mountpoint == NULL) 881da6c28aaSamw mntpt = zfs_strdup(zhp->zfs_hdl, entry.mnt_mountp); 882fa9e4066Sahrens 883da6c28aaSamw for (curr_proto = proto; *curr_proto != PROTO_END; 884da6c28aaSamw curr_proto++) { 885da6c28aaSamw 886ebedde84SEric Taylor if (is_shared(hdl, mntpt, *curr_proto) && 887ebedde84SEric Taylor unshare_one(hdl, zhp->zfs_name, 888da6c28aaSamw mntpt, *curr_proto) != 0) { 889da6c28aaSamw if (mntpt != NULL) 890da6c28aaSamw free(mntpt); 891da6c28aaSamw return (-1); 892da6c28aaSamw } 89367331909Sdougm } 894fa9e4066Sahrens } 89567331909Sdougm if (mntpt != NULL) 896d8689a57Sdougm free(mntpt); 897fa9e4066Sahrens 898fa9e4066Sahrens return (0); 899fa9e4066Sahrens } 900fa9e4066Sahrens 901da6c28aaSamw int 902da6c28aaSamw zfs_unshare_nfs(zfs_handle_t *zhp, const char *mountpoint) 903da6c28aaSamw { 904da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, nfs_only)); 905da6c28aaSamw } 906da6c28aaSamw 907da6c28aaSamw int 908da6c28aaSamw zfs_unshare_smb(zfs_handle_t *zhp, const char *mountpoint) 909da6c28aaSamw { 910da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, smb_only)); 911da6c28aaSamw } 912da6c28aaSamw 913fa9e4066Sahrens /* 914da6c28aaSamw * Same as zfs_unmountall(), but for NFS and SMB unshares. 915fa9e4066Sahrens */ 916fa9e4066Sahrens int 917da6c28aaSamw zfs_unshareall_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto) 918fa9e4066Sahrens { 919fa9e4066Sahrens prop_changelist_t *clp; 920fa9e4066Sahrens int ret; 921fa9e4066Sahrens 9220069fd67STim Haley clp = changelist_gather(zhp, ZFS_PROP_SHARENFS, 0, 0); 923fa9e4066Sahrens if (clp == NULL) 924fa9e4066Sahrens return (-1); 925fa9e4066Sahrens 926da6c28aaSamw ret = changelist_unshare(clp, proto); 927fa9e4066Sahrens changelist_free(clp); 928fa9e4066Sahrens 929fa9e4066Sahrens return (ret); 930fa9e4066Sahrens } 931fa9e4066Sahrens 932da6c28aaSamw int 933da6c28aaSamw zfs_unshareall_nfs(zfs_handle_t *zhp) 934da6c28aaSamw { 935da6c28aaSamw return (zfs_unshareall_proto(zhp, nfs_only)); 936da6c28aaSamw } 937da6c28aaSamw 938da6c28aaSamw int 939da6c28aaSamw zfs_unshareall_smb(zfs_handle_t *zhp) 940da6c28aaSamw { 941da6c28aaSamw return (zfs_unshareall_proto(zhp, smb_only)); 942da6c28aaSamw } 943da6c28aaSamw 944da6c28aaSamw int 945da6c28aaSamw zfs_unshareall(zfs_handle_t *zhp) 946da6c28aaSamw { 947da6c28aaSamw return (zfs_unshareall_proto(zhp, share_all_proto)); 948da6c28aaSamw } 949da6c28aaSamw 950da6c28aaSamw int 951da6c28aaSamw zfs_unshareall_bypath(zfs_handle_t *zhp, const char *mountpoint) 952da6c28aaSamw { 953da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, share_all_proto)); 954da6c28aaSamw } 955da6c28aaSamw 956fa9e4066Sahrens /* 957fa9e4066Sahrens * Remove the mountpoint associated with the current dataset, if necessary. 958fa9e4066Sahrens * We only remove the underlying directory if: 959fa9e4066Sahrens * 960fa9e4066Sahrens * - The mountpoint is not 'none' or 'legacy' 961fa9e4066Sahrens * - The mountpoint is non-empty 962fa9e4066Sahrens * - The mountpoint is the default or inherited 963fa9e4066Sahrens * - The 'zoned' property is set, or we're in a local zone 964fa9e4066Sahrens * 965fa9e4066Sahrens * Any other directories we leave alone. 966fa9e4066Sahrens */ 967fa9e4066Sahrens void 968fa9e4066Sahrens remove_mountpoint(zfs_handle_t *zhp) 969fa9e4066Sahrens { 970fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 971990b4856Slling zprop_source_t source; 972fa9e4066Sahrens 973e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), 974e9dbad6fSeschrock &source)) 975fa9e4066Sahrens return; 976fa9e4066Sahrens 977990b4856Slling if (source == ZPROP_SRC_DEFAULT || 978990b4856Slling source == ZPROP_SRC_INHERITED) { 979fa9e4066Sahrens /* 980fa9e4066Sahrens * Try to remove the directory, silently ignoring any errors. 981fa9e4066Sahrens * The filesystem may have since been removed or moved around, 982e9dbad6fSeschrock * and this error isn't really useful to the administrator in 983e9dbad6fSeschrock * any way. 984fa9e4066Sahrens */ 985fa9e4066Sahrens (void) rmdir(mountpoint); 986fa9e4066Sahrens } 987fa9e4066Sahrens } 9883bb79becSeschrock 9899d9a58e3SEric Taylor void 9909d9a58e3SEric Taylor libzfs_add_handle(get_all_cb_t *cbp, zfs_handle_t *zhp) 9919d9a58e3SEric Taylor { 9929d9a58e3SEric Taylor if (cbp->cb_alloc == cbp->cb_used) { 9939d9a58e3SEric Taylor size_t newsz; 9949d9a58e3SEric Taylor void *ptr; 9959d9a58e3SEric Taylor 9969d9a58e3SEric Taylor newsz = cbp->cb_alloc ? cbp->cb_alloc * 2 : 64; 9979d9a58e3SEric Taylor ptr = zfs_realloc(zhp->zfs_hdl, 9989d9a58e3SEric Taylor cbp->cb_handles, cbp->cb_alloc * sizeof (void *), 9999d9a58e3SEric Taylor newsz * sizeof (void *)); 10009d9a58e3SEric Taylor cbp->cb_handles = ptr; 10019d9a58e3SEric Taylor cbp->cb_alloc = newsz; 10029d9a58e3SEric Taylor } 10039d9a58e3SEric Taylor cbp->cb_handles[cbp->cb_used++] = zhp; 10049d9a58e3SEric Taylor } 10053bb79becSeschrock 10063bb79becSeschrock static int 10073bb79becSeschrock mount_cb(zfs_handle_t *zhp, void *data) 10083bb79becSeschrock { 10099d9a58e3SEric Taylor get_all_cb_t *cbp = data; 10103bb79becSeschrock 10119d9a58e3SEric Taylor if (!(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM)) { 10123bb79becSeschrock zfs_close(zhp); 10133bb79becSeschrock return (0); 10143bb79becSeschrock } 10153bb79becSeschrock 1016a227b7f4Shs if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_NOAUTO) { 1017a227b7f4Shs zfs_close(zhp); 1018a227b7f4Shs return (0); 1019a227b7f4Shs } 1020a227b7f4Shs 10219c3fd121SMatthew Ahrens /* 10229c3fd121SMatthew Ahrens * If this filesystem is inconsistent and has a receive resume 10239c3fd121SMatthew Ahrens * token, we can not mount it. 10249c3fd121SMatthew Ahrens */ 10259c3fd121SMatthew Ahrens if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) && 10269c3fd121SMatthew Ahrens zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, 10279c3fd121SMatthew Ahrens NULL, 0, NULL, NULL, 0, B_TRUE) == 0) { 10289c3fd121SMatthew Ahrens zfs_close(zhp); 10299c3fd121SMatthew Ahrens return (0); 10309c3fd121SMatthew Ahrens } 10319c3fd121SMatthew Ahrens 10329d9a58e3SEric Taylor libzfs_add_handle(cbp, zhp); 10339d9a58e3SEric Taylor if (zfs_iter_filesystems(zhp, mount_cb, cbp) != 0) { 10349d9a58e3SEric Taylor zfs_close(zhp); 10359d9a58e3SEric Taylor return (-1); 10363bb79becSeschrock } 10379d9a58e3SEric Taylor return (0); 10383bb79becSeschrock } 10393bb79becSeschrock 10409d9a58e3SEric Taylor int 10419d9a58e3SEric Taylor libzfs_dataset_cmp(const void *a, const void *b) 10423bb79becSeschrock { 10433bb79becSeschrock zfs_handle_t **za = (zfs_handle_t **)a; 10443bb79becSeschrock zfs_handle_t **zb = (zfs_handle_t **)b; 10453bb79becSeschrock char mounta[MAXPATHLEN]; 10463bb79becSeschrock char mountb[MAXPATHLEN]; 1047f3861e1aSahl boolean_t gota, gotb; 1048f3861e1aSahl 1049f3861e1aSahl if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 1050f3861e1aSahl verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 1051f3861e1aSahl sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 1052f3861e1aSahl if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 1053f3861e1aSahl verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 1054f3861e1aSahl sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 1055f3861e1aSahl 1056f3861e1aSahl if (gota && gotb) 1057f3861e1aSahl return (strcmp(mounta, mountb)); 10583bb79becSeschrock 1059f3861e1aSahl if (gota) 1060f3861e1aSahl return (-1); 1061f3861e1aSahl if (gotb) 1062f3861e1aSahl return (1); 10633bb79becSeschrock 1064f3861e1aSahl return (strcmp(zfs_get_name(a), zfs_get_name(b))); 10653bb79becSeschrock } 10663bb79becSeschrock 1067f3861e1aSahl /* 1068f3861e1aSahl * Mount and share all datasets within the given pool. This assumes that no 1069f3861e1aSahl * datasets within the pool are currently mounted. Because users can create 1070f3861e1aSahl * complicated nested hierarchies of mountpoints, we first gather all the 1071f3861e1aSahl * datasets and mountpoints within the pool, and sort them by mountpoint. Once 1072f3861e1aSahl * we have the list of all filesystems, we iterate over them in order and mount 1073f3861e1aSahl * and/or share each one. 1074f3861e1aSahl */ 1075f3861e1aSahl #pragma weak zpool_mount_datasets = zpool_enable_datasets 10763bb79becSeschrock int 1077f3861e1aSahl zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags) 10783bb79becSeschrock { 10799d9a58e3SEric Taylor get_all_cb_t cb = { 0 }; 10803bb79becSeschrock libzfs_handle_t *hdl = zhp->zpool_hdl; 10813bb79becSeschrock zfs_handle_t *zfsp; 10823bb79becSeschrock int i, ret = -1; 108367331909Sdougm int *good; 10843bb79becSeschrock 10853bb79becSeschrock /* 1086d87468daSrm * Gather all non-snap datasets within the pool. 10873bb79becSeschrock */ 1088990b4856Slling if ((zfsp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_DATASET)) == NULL) 10893bb79becSeschrock goto out; 10903bb79becSeschrock 10919d9a58e3SEric Taylor libzfs_add_handle(&cb, zfsp); 1092d87468daSrm if (zfs_iter_filesystems(zfsp, mount_cb, &cb) != 0) 10933bb79becSeschrock goto out; 10943bb79becSeschrock /* 10953bb79becSeschrock * Sort the datasets by mountpoint. 10963bb79becSeschrock */ 10979d9a58e3SEric Taylor qsort(cb.cb_handles, cb.cb_used, sizeof (void *), 10989d9a58e3SEric Taylor libzfs_dataset_cmp); 10993bb79becSeschrock 11003bb79becSeschrock /* 110167331909Sdougm * And mount all the datasets, keeping track of which ones 11026e77af0aSDavid Pacheco * succeeded or failed. 11033bb79becSeschrock */ 11046e77af0aSDavid Pacheco if ((good = zfs_alloc(zhp->zpool_hdl, 11056e77af0aSDavid Pacheco cb.cb_used * sizeof (int))) == NULL) 11066e77af0aSDavid Pacheco goto out; 11076e77af0aSDavid Pacheco 11083bb79becSeschrock ret = 0; 11093bb79becSeschrock for (i = 0; i < cb.cb_used; i++) { 11109d9a58e3SEric Taylor if (zfs_mount(cb.cb_handles[i], mntopts, flags) != 0) 11113bb79becSeschrock ret = -1; 1112d8689a57Sdougm else 111367331909Sdougm good[i] = 1; 11143bb79becSeschrock } 11155b6e0c46Sdougm 111667331909Sdougm /* 111767331909Sdougm * Then share all the ones that need to be shared. This needs 111867331909Sdougm * to be a separate pass in order to avoid excessive reloading 111967331909Sdougm * of the configuration. Good should never be NULL since 112067331909Sdougm * zfs_alloc is supposed to exit if memory isn't available. 112167331909Sdougm */ 112267331909Sdougm for (i = 0; i < cb.cb_used; i++) { 11239d9a58e3SEric Taylor if (good[i] && zfs_share(cb.cb_handles[i]) != 0) 112467331909Sdougm ret = -1; 112567331909Sdougm } 112667331909Sdougm 112767331909Sdougm free(good); 11283bb79becSeschrock 11293bb79becSeschrock out: 11303bb79becSeschrock for (i = 0; i < cb.cb_used; i++) 11319d9a58e3SEric Taylor zfs_close(cb.cb_handles[i]); 11329d9a58e3SEric Taylor free(cb.cb_handles); 11333bb79becSeschrock 11343bb79becSeschrock return (ret); 11353bb79becSeschrock } 11363bb79becSeschrock 11373bb79becSeschrock static int 11383bb79becSeschrock mountpoint_compare(const void *a, const void *b) 11393bb79becSeschrock { 11403bb79becSeschrock const char *mounta = *((char **)a); 11413bb79becSeschrock const char *mountb = *((char **)b); 11423bb79becSeschrock 11433bb79becSeschrock return (strcmp(mountb, mounta)); 11443bb79becSeschrock } 11453bb79becSeschrock 1146681d9761SEric Taylor /* alias for 2002/240 */ 1147681d9761SEric Taylor #pragma weak zpool_unmount_datasets = zpool_disable_datasets 1148f3861e1aSahl /* 1149f3861e1aSahl * Unshare and unmount all datasets within the given pool. We don't want to 1150f3861e1aSahl * rely on traversing the DSL to discover the filesystems within the pool, 1151f3861e1aSahl * because this may be expensive (if not all of them are mounted), and can fail 1152f3861e1aSahl * arbitrarily (on I/O error, for example). Instead, we walk /etc/mnttab and 1153f3861e1aSahl * gather all the filesystems that are currently mounted. 1154f3861e1aSahl */ 11553bb79becSeschrock int 1156f3861e1aSahl zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force) 11573bb79becSeschrock { 11583bb79becSeschrock int used, alloc; 11593bb79becSeschrock struct mnttab entry; 11603bb79becSeschrock size_t namelen; 11613bb79becSeschrock char **mountpoints = NULL; 11623bb79becSeschrock zfs_handle_t **datasets = NULL; 11633bb79becSeschrock libzfs_handle_t *hdl = zhp->zpool_hdl; 11643bb79becSeschrock int i; 11653bb79becSeschrock int ret = -1; 11663bb79becSeschrock int flags = (force ? MS_FORCE : 0); 11673bb79becSeschrock 11683bb79becSeschrock namelen = strlen(zhp->zpool_name); 11693bb79becSeschrock 11703bb79becSeschrock rewind(hdl->libzfs_mnttab); 11713bb79becSeschrock used = alloc = 0; 11723bb79becSeschrock while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 11733bb79becSeschrock /* 11743bb79becSeschrock * Ignore non-ZFS entries. 11753bb79becSeschrock */ 11763bb79becSeschrock if (entry.mnt_fstype == NULL || 11773bb79becSeschrock strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 11783bb79becSeschrock continue; 11793bb79becSeschrock 11803bb79becSeschrock /* 11813bb79becSeschrock * Ignore filesystems not within this pool. 11823bb79becSeschrock */ 11833bb79becSeschrock if (entry.mnt_mountp == NULL || 11843bb79becSeschrock strncmp(entry.mnt_special, zhp->zpool_name, namelen) != 0 || 11853bb79becSeschrock (entry.mnt_special[namelen] != '/' && 11863bb79becSeschrock entry.mnt_special[namelen] != '\0')) 11873bb79becSeschrock continue; 11883bb79becSeschrock 11893bb79becSeschrock /* 11903bb79becSeschrock * At this point we've found a filesystem within our pool. Add 11913bb79becSeschrock * it to our growing list. 11923bb79becSeschrock */ 11933bb79becSeschrock if (used == alloc) { 11943bb79becSeschrock if (alloc == 0) { 11953bb79becSeschrock if ((mountpoints = zfs_alloc(hdl, 11963bb79becSeschrock 8 * sizeof (void *))) == NULL) 11973bb79becSeschrock goto out; 11983bb79becSeschrock 11993bb79becSeschrock if ((datasets = zfs_alloc(hdl, 12003bb79becSeschrock 8 * sizeof (void *))) == NULL) 12013bb79becSeschrock goto out; 12023bb79becSeschrock 12033bb79becSeschrock alloc = 8; 12043bb79becSeschrock } else { 1205e9dbad6fSeschrock void *ptr; 12063bb79becSeschrock 1207e9dbad6fSeschrock if ((ptr = zfs_realloc(hdl, mountpoints, 1208e9dbad6fSeschrock alloc * sizeof (void *), 12093bb79becSeschrock alloc * 2 * sizeof (void *))) == NULL) 12103bb79becSeschrock goto out; 1211e9dbad6fSeschrock mountpoints = ptr; 12123bb79becSeschrock 1213e9dbad6fSeschrock if ((ptr = zfs_realloc(hdl, datasets, 1214e9dbad6fSeschrock alloc * sizeof (void *), 12153bb79becSeschrock alloc * 2 * sizeof (void *))) == NULL) 12163bb79becSeschrock goto out; 1217e9dbad6fSeschrock datasets = ptr; 12183bb79becSeschrock 12193bb79becSeschrock alloc *= 2; 12203bb79becSeschrock } 12213bb79becSeschrock } 12223bb79becSeschrock 12233bb79becSeschrock if ((mountpoints[used] = zfs_strdup(hdl, 12243bb79becSeschrock entry.mnt_mountp)) == NULL) 12253bb79becSeschrock goto out; 12263bb79becSeschrock 12273bb79becSeschrock /* 12283bb79becSeschrock * This is allowed to fail, in case there is some I/O error. It 12293bb79becSeschrock * is only used to determine if we need to remove the underlying 12303bb79becSeschrock * mountpoint, so failure is not fatal. 12313bb79becSeschrock */ 12323bb79becSeschrock datasets[used] = make_dataset_handle(hdl, entry.mnt_special); 12333bb79becSeschrock 12343bb79becSeschrock used++; 12353bb79becSeschrock } 12363bb79becSeschrock 12373bb79becSeschrock /* 12383bb79becSeschrock * At this point, we have the entire list of filesystems, so sort it by 12393bb79becSeschrock * mountpoint. 12403bb79becSeschrock */ 12413bb79becSeschrock qsort(mountpoints, used, sizeof (char *), mountpoint_compare); 12423bb79becSeschrock 12433bb79becSeschrock /* 12443bb79becSeschrock * Walk through and first unshare everything. 12453bb79becSeschrock */ 12463bb79becSeschrock for (i = 0; i < used; i++) { 1247da6c28aaSamw zfs_share_proto_t *curr_proto; 1248da6c28aaSamw for (curr_proto = share_all_proto; *curr_proto != PROTO_END; 1249da6c28aaSamw curr_proto++) { 1250da6c28aaSamw if (is_shared(hdl, mountpoints[i], *curr_proto) && 1251da6c28aaSamw unshare_one(hdl, mountpoints[i], 1252da6c28aaSamw mountpoints[i], *curr_proto) != 0) 1253da6c28aaSamw goto out; 1254da6c28aaSamw } 12553bb79becSeschrock } 12563bb79becSeschrock 12573bb79becSeschrock /* 12583bb79becSeschrock * Now unmount everything, removing the underlying directories as 12593bb79becSeschrock * appropriate. 12603bb79becSeschrock */ 12613bb79becSeschrock for (i = 0; i < used; i++) { 12623bb79becSeschrock if (unmount_one(hdl, mountpoints[i], flags) != 0) 12633bb79becSeschrock goto out; 1264e9dbad6fSeschrock } 12653bb79becSeschrock 1266e9dbad6fSeschrock for (i = 0; i < used; i++) { 12673bb79becSeschrock if (datasets[i]) 12683bb79becSeschrock remove_mountpoint(datasets[i]); 12693bb79becSeschrock } 12703bb79becSeschrock 12713bb79becSeschrock ret = 0; 12723bb79becSeschrock out: 12733bb79becSeschrock for (i = 0; i < used; i++) { 12743bb79becSeschrock if (datasets[i]) 12753bb79becSeschrock zfs_close(datasets[i]); 12763bb79becSeschrock free(mountpoints[i]); 12773bb79becSeschrock } 12783bb79becSeschrock free(datasets); 12793bb79becSeschrock free(mountpoints); 12803bb79becSeschrock 12813bb79becSeschrock return (ret); 12823bb79becSeschrock } 1283