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. 25*d420209dSAlex Reece * Copyright (c) 2014, 2015 by Delphix. All rights reserved. 2688f61deeSIgor 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> 68*d420209dSAlex Reece #include <fcntl.h> 69fa9e4066Sahrens #include <libgen.h> 70fa9e4066Sahrens #include <libintl.h> 71fa9e4066Sahrens #include <stdio.h> 72fa9e4066Sahrens #include <stdlib.h> 73fa9e4066Sahrens #include <strings.h> 74fa9e4066Sahrens #include <unistd.h> 75fa9e4066Sahrens #include <zone.h> 76fa9e4066Sahrens #include <sys/mntent.h> 77fa9e4066Sahrens #include <sys/mount.h> 78fa9e4066Sahrens #include <sys/stat.h> 79fa9e4066Sahrens 80fa9e4066Sahrens #include <libzfs.h> 81fa9e4066Sahrens 82fa9e4066Sahrens #include "libzfs_impl.h" 83fa9e4066Sahrens 8467331909Sdougm #include <libshare.h> 8567331909Sdougm #include <sys/systeminfo.h> 8667331909Sdougm #define MAXISALEN 257 /* based on sysinfo(2) man page */ 8767331909Sdougm 88da6c28aaSamw static int zfs_share_proto(zfs_handle_t *, zfs_share_proto_t *); 89da6c28aaSamw zfs_share_type_t zfs_is_shared_proto(zfs_handle_t *, char **, 90da6c28aaSamw zfs_share_proto_t); 91da6c28aaSamw 92da6c28aaSamw /* 93da6c28aaSamw * The share protocols table must be in the same order as the zfs_share_prot_t 94da6c28aaSamw * enum in libzfs_impl.h 95da6c28aaSamw */ 96da6c28aaSamw typedef struct { 97da6c28aaSamw zfs_prop_t p_prop; 98da6c28aaSamw char *p_name; 99da6c28aaSamw int p_share_err; 100da6c28aaSamw int p_unshare_err; 101da6c28aaSamw } proto_table_t; 102da6c28aaSamw 103da6c28aaSamw proto_table_t proto_table[PROTO_END] = { 104da6c28aaSamw {ZFS_PROP_SHARENFS, "nfs", EZFS_SHARENFSFAILED, EZFS_UNSHARENFSFAILED}, 105da6c28aaSamw {ZFS_PROP_SHARESMB, "smb", EZFS_SHARESMBFAILED, EZFS_UNSHARESMBFAILED}, 106da6c28aaSamw }; 107da6c28aaSamw 108da6c28aaSamw zfs_share_proto_t nfs_only[] = { 109da6c28aaSamw PROTO_NFS, 110da6c28aaSamw PROTO_END 111da6c28aaSamw }; 112da6c28aaSamw 113da6c28aaSamw zfs_share_proto_t smb_only[] = { 114da6c28aaSamw PROTO_SMB, 115da6c28aaSamw PROTO_END 116da6c28aaSamw }; 117da6c28aaSamw zfs_share_proto_t share_all_proto[] = { 118da6c28aaSamw PROTO_NFS, 119da6c28aaSamw PROTO_SMB, 120da6c28aaSamw PROTO_END 121da6c28aaSamw }; 122da6c28aaSamw 123fa9e4066Sahrens /* 124da6c28aaSamw * Search the sharetab for the given mountpoint and protocol, returning 125da6c28aaSamw * a zfs_share_type_t value. 126fa9e4066Sahrens */ 127da6c28aaSamw static zfs_share_type_t 128da6c28aaSamw is_shared(libzfs_handle_t *hdl, const char *mountpoint, zfs_share_proto_t proto) 129fa9e4066Sahrens { 130fa9e4066Sahrens char buf[MAXPATHLEN], *tab; 131da6c28aaSamw char *ptr; 132fa9e4066Sahrens 13399653d4eSeschrock if (hdl->libzfs_sharetab == NULL) 134da6c28aaSamw return (SHARED_NOT_SHARED); 135fa9e4066Sahrens 13699653d4eSeschrock (void) fseek(hdl->libzfs_sharetab, 0, SEEK_SET); 137fa9e4066Sahrens 13899653d4eSeschrock while (fgets(buf, sizeof (buf), hdl->libzfs_sharetab) != NULL) { 139fa9e4066Sahrens 140fa9e4066Sahrens /* the mountpoint is the first entry on each line */ 141da6c28aaSamw if ((tab = strchr(buf, '\t')) == NULL) 142da6c28aaSamw continue; 143da6c28aaSamw 144da6c28aaSamw *tab = '\0'; 145da6c28aaSamw if (strcmp(buf, mountpoint) == 0) { 146da6c28aaSamw /* 147da6c28aaSamw * the protocol field is the third field 148da6c28aaSamw * skip over second field 149da6c28aaSamw */ 150da6c28aaSamw ptr = ++tab; 151da6c28aaSamw if ((tab = strchr(ptr, '\t')) == NULL) 152da6c28aaSamw continue; 153da6c28aaSamw ptr = ++tab; 154da6c28aaSamw if ((tab = strchr(ptr, '\t')) == NULL) 155da6c28aaSamw continue; 156fa9e4066Sahrens *tab = '\0'; 157da6c28aaSamw if (strcmp(ptr, 158da6c28aaSamw proto_table[proto].p_name) == 0) { 159da6c28aaSamw switch (proto) { 160da6c28aaSamw case PROTO_NFS: 161da6c28aaSamw return (SHARED_NFS); 162da6c28aaSamw case PROTO_SMB: 163da6c28aaSamw return (SHARED_SMB); 164da6c28aaSamw default: 165da6c28aaSamw return (0); 166da6c28aaSamw } 167da6c28aaSamw } 168fa9e4066Sahrens } 169fa9e4066Sahrens } 170fa9e4066Sahrens 171da6c28aaSamw return (SHARED_NOT_SHARED); 172fa9e4066Sahrens } 173fa9e4066Sahrens 174fa9e4066Sahrens /* 17599653d4eSeschrock * Returns true if the specified directory is empty. If we can't open the 17699653d4eSeschrock * directory at all, return true so that the mount can fail with a more 177fa9e4066Sahrens * informative error message. 178fa9e4066Sahrens */ 17999653d4eSeschrock static boolean_t 180fa9e4066Sahrens dir_is_empty(const char *dirname) 181fa9e4066Sahrens { 182fa9e4066Sahrens DIR *dirp; 183fa9e4066Sahrens struct dirent64 *dp; 184*d420209dSAlex Reece int dirfd; 185fa9e4066Sahrens 186*d420209dSAlex Reece if ((dirfd = openat(AT_FDCWD, dirname, 187*d420209dSAlex Reece O_RDONLY | O_NDELAY | O_LARGEFILE | O_CLOEXEC, 0)) < 0) { 18899653d4eSeschrock return (B_TRUE); 189*d420209dSAlex Reece } 190*d420209dSAlex Reece 191*d420209dSAlex Reece if ((dirp = fdopendir(dirfd)) == NULL) { 192*d420209dSAlex Reece return (B_TRUE); 193*d420209dSAlex Reece } 194fa9e4066Sahrens 195fa9e4066Sahrens while ((dp = readdir64(dirp)) != NULL) { 196fa9e4066Sahrens 197fa9e4066Sahrens if (strcmp(dp->d_name, ".") == 0 || 198fa9e4066Sahrens strcmp(dp->d_name, "..") == 0) 199fa9e4066Sahrens continue; 200fa9e4066Sahrens 201fa9e4066Sahrens (void) closedir(dirp); 20299653d4eSeschrock return (B_FALSE); 203fa9e4066Sahrens } 204fa9e4066Sahrens 205fa9e4066Sahrens (void) closedir(dirp); 20699653d4eSeschrock return (B_TRUE); 207fa9e4066Sahrens } 208fa9e4066Sahrens 209fa9e4066Sahrens /* 210fa9e4066Sahrens * Checks to see if the mount is active. If the filesystem is mounted, we fill 211fa9e4066Sahrens * in 'where' with the current mountpoint, and return 1. Otherwise, we return 212fa9e4066Sahrens * 0. 213fa9e4066Sahrens */ 21499653d4eSeschrock boolean_t 21555434c77Sek is_mounted(libzfs_handle_t *zfs_hdl, const char *special, char **where) 216fa9e4066Sahrens { 217ebedde84SEric Taylor struct mnttab entry; 218fa9e4066Sahrens 219ebedde84SEric Taylor if (libzfs_mnttab_find(zfs_hdl, special, &entry) != 0) 22099653d4eSeschrock return (B_FALSE); 221fa9e4066Sahrens 222fa9e4066Sahrens if (where != NULL) 22355434c77Sek *where = zfs_strdup(zfs_hdl, entry.mnt_mountp); 224fa9e4066Sahrens 22599653d4eSeschrock return (B_TRUE); 226fa9e4066Sahrens } 227fa9e4066Sahrens 22855434c77Sek boolean_t 22955434c77Sek zfs_is_mounted(zfs_handle_t *zhp, char **where) 23055434c77Sek { 23155434c77Sek return (is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where)); 23255434c77Sek } 23355434c77Sek 234e9dbad6fSeschrock /* 235e9dbad6fSeschrock * Returns true if the given dataset is mountable, false otherwise. Returns the 236e9dbad6fSeschrock * mountpoint in 'buf'. 237e9dbad6fSeschrock */ 238e9dbad6fSeschrock static boolean_t 239e9dbad6fSeschrock zfs_is_mountable(zfs_handle_t *zhp, char *buf, size_t buflen, 240990b4856Slling zprop_source_t *source) 241e9dbad6fSeschrock { 2429adfa60dSMatthew Ahrens char sourceloc[MAXNAMELEN]; 243990b4856Slling zprop_source_t sourcetype; 244e9dbad6fSeschrock 245e9dbad6fSeschrock if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type)) 246e9dbad6fSeschrock return (B_FALSE); 247e9dbad6fSeschrock 248e9dbad6fSeschrock verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen, 249e9dbad6fSeschrock &sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0); 250e9dbad6fSeschrock 251e9dbad6fSeschrock if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 || 252e9dbad6fSeschrock strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0) 253e9dbad6fSeschrock return (B_FALSE); 254e9dbad6fSeschrock 255a227b7f4Shs if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF) 256e9dbad6fSeschrock return (B_FALSE); 257e9dbad6fSeschrock 258e9dbad6fSeschrock if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) && 259e9dbad6fSeschrock getzoneid() == GLOBAL_ZONEID) 260e9dbad6fSeschrock return (B_FALSE); 261e9dbad6fSeschrock 262e9dbad6fSeschrock if (source) 263e9dbad6fSeschrock *source = sourcetype; 264e9dbad6fSeschrock 265e9dbad6fSeschrock return (B_TRUE); 266e9dbad6fSeschrock } 267e9dbad6fSeschrock 268fa9e4066Sahrens /* 269fa9e4066Sahrens * Mount the given filesystem. 270fa9e4066Sahrens */ 271fa9e4066Sahrens int 272fa9e4066Sahrens zfs_mount(zfs_handle_t *zhp, const char *options, int flags) 273fa9e4066Sahrens { 274fa9e4066Sahrens struct stat buf; 275fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 276fa9e4066Sahrens char mntopts[MNT_LINE_MAX]; 27799653d4eSeschrock libzfs_handle_t *hdl = zhp->zfs_hdl; 278fa9e4066Sahrens 279fa9e4066Sahrens if (options == NULL) 280fa9e4066Sahrens mntopts[0] = '\0'; 281fa9e4066Sahrens else 282fa9e4066Sahrens (void) strlcpy(mntopts, options, sizeof (mntopts)); 283fa9e4066Sahrens 284f9af39baSGeorge Wilson /* 285f9af39baSGeorge Wilson * If the pool is imported read-only then all mounts must be read-only 286f9af39baSGeorge Wilson */ 287f9af39baSGeorge Wilson if (zpool_get_prop_int(zhp->zpool_hdl, ZPOOL_PROP_READONLY, NULL)) 288f9af39baSGeorge Wilson flags |= MS_RDONLY; 289f9af39baSGeorge Wilson 290e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL)) 29199653d4eSeschrock return (0); 292fa9e4066Sahrens 293fa9e4066Sahrens /* Create the directory if it doesn't already exist */ 294fa9e4066Sahrens if (lstat(mountpoint, &buf) != 0) { 295fa9e4066Sahrens if (mkdirp(mountpoint, 0755) != 0) { 29699653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 29799653d4eSeschrock "failed to create mountpoint")); 298ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 29999653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), 30099653d4eSeschrock mountpoint)); 301fa9e4066Sahrens } 302fa9e4066Sahrens } 303fa9e4066Sahrens 304fa9e4066Sahrens /* 305fa9e4066Sahrens * Determine if the mountpoint is empty. If so, refuse to perform the 306fa9e4066Sahrens * mount. We don't perform this check if MS_OVERLAY is specified, which 307fa9e4066Sahrens * would defeat the point. We also avoid this check if 'remount' is 308fa9e4066Sahrens * specified. 309fa9e4066Sahrens */ 310fa9e4066Sahrens if ((flags & MS_OVERLAY) == 0 && 311fa9e4066Sahrens strstr(mntopts, MNTOPT_REMOUNT) == NULL && 312fa9e4066Sahrens !dir_is_empty(mountpoint)) { 31399653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 31499653d4eSeschrock "directory is not empty")); 315ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 31699653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), mountpoint)); 317fa9e4066Sahrens } 318fa9e4066Sahrens 319fa9e4066Sahrens /* perform the mount */ 320fa9e4066Sahrens if (mount(zfs_get_name(zhp), mountpoint, MS_OPTIONSTR | flags, 321fa9e4066Sahrens MNTTYPE_ZFS, NULL, 0, mntopts, sizeof (mntopts)) != 0) { 322fa9e4066Sahrens /* 323fa9e4066Sahrens * Generic errors are nasty, but there are just way too many 324fa9e4066Sahrens * from mount(), and they're well-understood. We pick a few 325fa9e4066Sahrens * common ones to improve upon. 326fa9e4066Sahrens */ 327d8689a57Sdougm if (errno == EBUSY) { 32899653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 32999653d4eSeschrock "mountpoint or dataset is busy")); 330ecd6cf80Smarks } else if (errno == EPERM) { 331ecd6cf80Smarks zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 332ecd6cf80Smarks "Insufficient privileges")); 33354a91118SChris Kirby } else if (errno == ENOTSUP) { 33454a91118SChris Kirby char buf[256]; 335dc7cd546SMark Shellenbaum int spa_version; 33654a91118SChris Kirby 337dc7cd546SMark Shellenbaum VERIFY(zfs_spa_version(zhp, &spa_version) == 0); 33854a91118SChris Kirby (void) snprintf(buf, sizeof (buf), 339dc7cd546SMark Shellenbaum dgettext(TEXT_DOMAIN, "Can't mount a version %lld " 340dc7cd546SMark Shellenbaum "file system on a version %d pool. Pool must be" 341dc7cd546SMark Shellenbaum " upgraded to mount this file system."), 34254a91118SChris Kirby (u_longlong_t)zfs_prop_get_int(zhp, 343dc7cd546SMark Shellenbaum ZFS_PROP_VERSION), spa_version); 34454a91118SChris Kirby zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, buf)); 345d8689a57Sdougm } else { 34699653d4eSeschrock zfs_error_aux(hdl, strerror(errno)); 347d8689a57Sdougm } 348ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 34999653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), 35099653d4eSeschrock zhp->zfs_name)); 351fa9e4066Sahrens } 352fa9e4066Sahrens 353ebedde84SEric Taylor /* add the mounted entry into our cache */ 354ebedde84SEric Taylor libzfs_mnttab_add(hdl, zfs_get_name(zhp), mountpoint, 355ebedde84SEric Taylor mntopts); 356fa9e4066Sahrens return (0); 357fa9e4066Sahrens } 358fa9e4066Sahrens 3593bb79becSeschrock /* 3603bb79becSeschrock * Unmount a single filesystem. 3613bb79becSeschrock */ 3623bb79becSeschrock static int 3633bb79becSeschrock unmount_one(libzfs_handle_t *hdl, const char *mountpoint, int flags) 3643bb79becSeschrock { 3653bb79becSeschrock if (umount2(mountpoint, flags) != 0) { 3663bb79becSeschrock zfs_error_aux(hdl, strerror(errno)); 367ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UMOUNTFAILED, 3683bb79becSeschrock dgettext(TEXT_DOMAIN, "cannot unmount '%s'"), 3693bb79becSeschrock mountpoint)); 3703bb79becSeschrock } 3713bb79becSeschrock 3723bb79becSeschrock return (0); 3733bb79becSeschrock } 3743bb79becSeschrock 375fa9e4066Sahrens /* 376fa9e4066Sahrens * Unmount the given filesystem. 377fa9e4066Sahrens */ 378fa9e4066Sahrens int 379fa9e4066Sahrens zfs_unmount(zfs_handle_t *zhp, const char *mountpoint, int flags) 380fa9e4066Sahrens { 381ebedde84SEric Taylor libzfs_handle_t *hdl = zhp->zfs_hdl; 382ebedde84SEric Taylor struct mnttab entry; 38367331909Sdougm char *mntpt = NULL; 384fa9e4066Sahrens 385ebedde84SEric Taylor /* check to see if we need to unmount the filesystem */ 386fa9e4066Sahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) && 387ebedde84SEric Taylor libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0)) { 38867331909Sdougm /* 38967331909Sdougm * mountpoint may have come from a call to 39067331909Sdougm * getmnt/getmntany if it isn't NULL. If it is NULL, 391ebedde84SEric Taylor * we know it comes from libzfs_mnttab_find which can 392ebedde84SEric Taylor * then get freed later. We strdup it to play it safe. 39367331909Sdougm */ 394fa9e4066Sahrens if (mountpoint == NULL) 395ebedde84SEric Taylor mntpt = zfs_strdup(hdl, entry.mnt_mountp); 39667331909Sdougm else 397ebedde84SEric Taylor mntpt = zfs_strdup(hdl, mountpoint); 398fa9e4066Sahrens 399fa9e4066Sahrens /* 4003bb79becSeschrock * Unshare and unmount the filesystem 401fa9e4066Sahrens */ 402da6c28aaSamw if (zfs_unshare_proto(zhp, mntpt, share_all_proto) != 0) 403eb66cf86Sth return (-1); 404eb66cf86Sth 405ebedde84SEric Taylor if (unmount_one(hdl, mntpt, flags) != 0) { 40667331909Sdougm free(mntpt); 407da6c28aaSamw (void) zfs_shareall(zhp); 408fa9e4066Sahrens return (-1); 40967331909Sdougm } 410ebedde84SEric Taylor libzfs_mnttab_remove(hdl, zhp->zfs_name); 41167331909Sdougm free(mntpt); 412fa9e4066Sahrens } 413fa9e4066Sahrens 414fa9e4066Sahrens return (0); 415fa9e4066Sahrens } 416fa9e4066Sahrens 417fa9e4066Sahrens /* 418fa9e4066Sahrens * Unmount this filesystem and any children inheriting the mountpoint property. 419fa9e4066Sahrens * To do this, just act like we're changing the mountpoint property, but don't 420fa9e4066Sahrens * remount the filesystems afterwards. 421fa9e4066Sahrens */ 422fa9e4066Sahrens int 423fa9e4066Sahrens zfs_unmountall(zfs_handle_t *zhp, int flags) 424fa9e4066Sahrens { 425fa9e4066Sahrens prop_changelist_t *clp; 426fa9e4066Sahrens int ret; 427fa9e4066Sahrens 4280069fd67STim Haley clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, 0, flags); 429fa9e4066Sahrens if (clp == NULL) 430fa9e4066Sahrens return (-1); 431fa9e4066Sahrens 432fa9e4066Sahrens ret = changelist_prefix(clp); 433fa9e4066Sahrens changelist_free(clp); 434fa9e4066Sahrens 435fa9e4066Sahrens return (ret); 436fa9e4066Sahrens } 437fa9e4066Sahrens 438f3861e1aSahl boolean_t 439f3861e1aSahl zfs_is_shared(zfs_handle_t *zhp) 440f3861e1aSahl { 441da6c28aaSamw zfs_share_type_t rc = 0; 442da6c28aaSamw zfs_share_proto_t *curr_proto; 443da6c28aaSamw 444f3861e1aSahl if (ZFS_IS_VOLUME(zhp)) 445ab003da8SJim Dunham return (B_FALSE); 446f3861e1aSahl 447da6c28aaSamw for (curr_proto = share_all_proto; *curr_proto != PROTO_END; 448da6c28aaSamw curr_proto++) 449da6c28aaSamw rc |= zfs_is_shared_proto(zhp, NULL, *curr_proto); 450da6c28aaSamw 451da6c28aaSamw return (rc ? B_TRUE : B_FALSE); 452f3861e1aSahl } 453f3861e1aSahl 454f3861e1aSahl int 455f3861e1aSahl zfs_share(zfs_handle_t *zhp) 456f3861e1aSahl { 4579d9a58e3SEric Taylor assert(!ZFS_IS_VOLUME(zhp)); 458da6c28aaSamw return (zfs_share_proto(zhp, share_all_proto)); 459f3861e1aSahl } 460f3861e1aSahl 461f3861e1aSahl int 462f3861e1aSahl zfs_unshare(zfs_handle_t *zhp) 463f3861e1aSahl { 4649d9a58e3SEric Taylor assert(!ZFS_IS_VOLUME(zhp)); 465da6c28aaSamw return (zfs_unshareall(zhp)); 466f3861e1aSahl } 467f3861e1aSahl 468fa9e4066Sahrens /* 469fa9e4066Sahrens * Check to see if the filesystem is currently shared. 470fa9e4066Sahrens */ 471da6c28aaSamw zfs_share_type_t 472da6c28aaSamw zfs_is_shared_proto(zfs_handle_t *zhp, char **where, zfs_share_proto_t proto) 473fa9e4066Sahrens { 474fa9e4066Sahrens char *mountpoint; 475da6c28aaSamw zfs_share_type_t rc; 476fa9e4066Sahrens 477fa9e4066Sahrens if (!zfs_is_mounted(zhp, &mountpoint)) 478da6c28aaSamw return (SHARED_NOT_SHARED); 479fa9e4066Sahrens 48088f61deeSIgor Kozhukhov if ((rc = is_shared(zhp->zfs_hdl, mountpoint, proto)) 48188f61deeSIgor Kozhukhov != SHARED_NOT_SHARED) { 482fa9e4066Sahrens if (where != NULL) 483fa9e4066Sahrens *where = mountpoint; 484fa9e4066Sahrens else 485fa9e4066Sahrens free(mountpoint); 486da6c28aaSamw return (rc); 487fa9e4066Sahrens } else { 488fa9e4066Sahrens free(mountpoint); 489da6c28aaSamw return (SHARED_NOT_SHARED); 490fa9e4066Sahrens } 491fa9e4066Sahrens } 492fa9e4066Sahrens 493da6c28aaSamw boolean_t 494da6c28aaSamw zfs_is_shared_nfs(zfs_handle_t *zhp, char **where) 495da6c28aaSamw { 496da6c28aaSamw return (zfs_is_shared_proto(zhp, where, 497da6c28aaSamw PROTO_NFS) != SHARED_NOT_SHARED); 498da6c28aaSamw } 499da6c28aaSamw 500da6c28aaSamw boolean_t 501da6c28aaSamw zfs_is_shared_smb(zfs_handle_t *zhp, char **where) 502da6c28aaSamw { 503da6c28aaSamw return (zfs_is_shared_proto(zhp, where, 504da6c28aaSamw PROTO_SMB) != SHARED_NOT_SHARED); 505da6c28aaSamw } 506da6c28aaSamw 50767331909Sdougm /* 50867331909Sdougm * Make sure things will work if libshare isn't installed by using 50967331909Sdougm * wrapper functions that check to see that the pointers to functions 51067331909Sdougm * initialized in _zfs_init_libshare() are actually present. 51167331909Sdougm */ 51267331909Sdougm 51367331909Sdougm static sa_handle_t (*_sa_init)(int); 51467331909Sdougm static void (*_sa_fini)(sa_handle_t); 51567331909Sdougm static sa_share_t (*_sa_find_share)(sa_handle_t, char *); 51667331909Sdougm static int (*_sa_enable_share)(sa_share_t, char *); 51767331909Sdougm static int (*_sa_disable_share)(sa_share_t, char *); 51867331909Sdougm static char *(*_sa_errorstr)(int); 51967331909Sdougm static int (*_sa_parse_legacy_options)(sa_group_t, char *, char *); 5205b6e0c46Sdougm static boolean_t (*_sa_needs_refresh)(sa_handle_t *); 5215b6e0c46Sdougm static libzfs_handle_t *(*_sa_get_zfs_handle)(sa_handle_t); 5225b6e0c46Sdougm static int (*_sa_zfs_process_share)(sa_handle_t, sa_group_t, sa_share_t, 5235b6e0c46Sdougm char *, char *, zprop_source_t, char *, char *, char *); 5245b6e0c46Sdougm static void (*_sa_update_sharetab_ts)(sa_handle_t); 52567331909Sdougm 52667331909Sdougm /* 52767331909Sdougm * _zfs_init_libshare() 52867331909Sdougm * 52967331909Sdougm * Find the libshare.so.1 entry points that we use here and save the 53067331909Sdougm * values to be used later. This is triggered by the runtime loader. 53167331909Sdougm * Make sure the correct ISA version is loaded. 53267331909Sdougm */ 5335b6e0c46Sdougm 53467331909Sdougm #pragma init(_zfs_init_libshare) 53567331909Sdougm static void 53667331909Sdougm _zfs_init_libshare(void) 53767331909Sdougm { 53867331909Sdougm void *libshare; 53967331909Sdougm char path[MAXPATHLEN]; 54067331909Sdougm char isa[MAXISALEN]; 54167331909Sdougm 54267331909Sdougm #if defined(_LP64) 54367331909Sdougm if (sysinfo(SI_ARCHITECTURE_64, isa, MAXISALEN) == -1) 544d8689a57Sdougm isa[0] = '\0'; 54567331909Sdougm #else 54667331909Sdougm isa[0] = '\0'; 54767331909Sdougm #endif 54867331909Sdougm (void) snprintf(path, MAXPATHLEN, 549d8689a57Sdougm "/usr/lib/%s/libshare.so.1", isa); 55067331909Sdougm 55167331909Sdougm if ((libshare = dlopen(path, RTLD_LAZY | RTLD_GLOBAL)) != NULL) { 552d8689a57Sdougm _sa_init = (sa_handle_t (*)(int))dlsym(libshare, "sa_init"); 553d8689a57Sdougm _sa_fini = (void (*)(sa_handle_t))dlsym(libshare, "sa_fini"); 554d8689a57Sdougm _sa_find_share = (sa_share_t (*)(sa_handle_t, char *)) 555d8689a57Sdougm dlsym(libshare, "sa_find_share"); 556d8689a57Sdougm _sa_enable_share = (int (*)(sa_share_t, char *))dlsym(libshare, 557d8689a57Sdougm "sa_enable_share"); 558d8689a57Sdougm _sa_disable_share = (int (*)(sa_share_t, char *))dlsym(libshare, 559d8689a57Sdougm "sa_disable_share"); 560d8689a57Sdougm _sa_errorstr = (char *(*)(int))dlsym(libshare, "sa_errorstr"); 561d8689a57Sdougm _sa_parse_legacy_options = (int (*)(sa_group_t, char *, char *)) 562d8689a57Sdougm dlsym(libshare, "sa_parse_legacy_options"); 5635b6e0c46Sdougm _sa_needs_refresh = (boolean_t (*)(sa_handle_t *)) 5645b6e0c46Sdougm dlsym(libshare, "sa_needs_refresh"); 5655b6e0c46Sdougm _sa_get_zfs_handle = (libzfs_handle_t *(*)(sa_handle_t)) 5665b6e0c46Sdougm dlsym(libshare, "sa_get_zfs_handle"); 5675b6e0c46Sdougm _sa_zfs_process_share = (int (*)(sa_handle_t, sa_group_t, 5685b6e0c46Sdougm sa_share_t, char *, char *, zprop_source_t, char *, 5695b6e0c46Sdougm char *, char *))dlsym(libshare, "sa_zfs_process_share"); 5705b6e0c46Sdougm _sa_update_sharetab_ts = (void (*)(sa_handle_t)) 5715b6e0c46Sdougm dlsym(libshare, "sa_update_sharetab_ts"); 57257b448deSdougm if (_sa_init == NULL || _sa_fini == NULL || 57357b448deSdougm _sa_find_share == NULL || _sa_enable_share == NULL || 57457b448deSdougm _sa_disable_share == NULL || _sa_errorstr == NULL || 5755b6e0c46Sdougm _sa_parse_legacy_options == NULL || 5765b6e0c46Sdougm _sa_needs_refresh == NULL || _sa_get_zfs_handle == NULL || 5775b6e0c46Sdougm _sa_zfs_process_share == NULL || 5785b6e0c46Sdougm _sa_update_sharetab_ts == NULL) { 57957b448deSdougm _sa_init = NULL; 58057b448deSdougm _sa_fini = NULL; 58157b448deSdougm _sa_disable_share = NULL; 58257b448deSdougm _sa_enable_share = NULL; 58357b448deSdougm _sa_errorstr = NULL; 58457b448deSdougm _sa_parse_legacy_options = NULL; 58557b448deSdougm (void) dlclose(libshare); 5865b6e0c46Sdougm _sa_needs_refresh = NULL; 5875b6e0c46Sdougm _sa_get_zfs_handle = NULL; 5885b6e0c46Sdougm _sa_zfs_process_share = NULL; 5895b6e0c46Sdougm _sa_update_sharetab_ts = NULL; 59057b448deSdougm } 59167331909Sdougm } 59267331909Sdougm } 59367331909Sdougm 59467331909Sdougm /* 59567331909Sdougm * zfs_init_libshare(zhandle, service) 59667331909Sdougm * 59767331909Sdougm * Initialize the libshare API if it hasn't already been initialized. 59867331909Sdougm * In all cases it returns 0 if it succeeded and an error if not. The 59967331909Sdougm * service value is which part(s) of the API to initialize and is a 60067331909Sdougm * direct map to the libshare sa_init(service) interface. 60167331909Sdougm */ 60267331909Sdougm int 60367331909Sdougm zfs_init_libshare(libzfs_handle_t *zhandle, int service) 60467331909Sdougm { 60567331909Sdougm int ret = SA_OK; 60667331909Sdougm 607d8689a57Sdougm if (_sa_init == NULL) 608d8689a57Sdougm ret = SA_CONFIG_ERR; 609d8689a57Sdougm 6105b6e0c46Sdougm if (ret == SA_OK && zhandle->libzfs_shareflags & ZFSSHARE_MISS) { 6115b6e0c46Sdougm /* 6125b6e0c46Sdougm * We had a cache miss. Most likely it is a new ZFS 6135b6e0c46Sdougm * dataset that was just created. We want to make sure 6145b6e0c46Sdougm * so check timestamps to see if a different process 6155b6e0c46Sdougm * has updated any of the configuration. If there was 6165b6e0c46Sdougm * some non-ZFS change, we need to re-initialize the 6175b6e0c46Sdougm * internal cache. 6185b6e0c46Sdougm */ 6195b6e0c46Sdougm zhandle->libzfs_shareflags &= ~ZFSSHARE_MISS; 6205b6e0c46Sdougm if (_sa_needs_refresh != NULL && 6215b6e0c46Sdougm _sa_needs_refresh(zhandle->libzfs_sharehdl)) { 6225b6e0c46Sdougm zfs_uninit_libshare(zhandle); 6235b6e0c46Sdougm zhandle->libzfs_sharehdl = _sa_init(service); 6245b6e0c46Sdougm } 6255b6e0c46Sdougm } 6265b6e0c46Sdougm 627d8689a57Sdougm if (ret == SA_OK && zhandle && zhandle->libzfs_sharehdl == NULL) 628d8689a57Sdougm zhandle->libzfs_sharehdl = _sa_init(service); 629d8689a57Sdougm 630d8689a57Sdougm if (ret == SA_OK && zhandle->libzfs_sharehdl == NULL) 631d8689a57Sdougm ret = SA_NO_MEMORY; 632d8689a57Sdougm 63367331909Sdougm return (ret); 63467331909Sdougm } 63567331909Sdougm 63667331909Sdougm /* 63767331909Sdougm * zfs_uninit_libshare(zhandle) 63867331909Sdougm * 63967331909Sdougm * Uninitialize the libshare API if it hasn't already been 64067331909Sdougm * uninitialized. It is OK to call multiple times. 64167331909Sdougm */ 64267331909Sdougm void 64367331909Sdougm zfs_uninit_libshare(libzfs_handle_t *zhandle) 64467331909Sdougm { 64567331909Sdougm if (zhandle != NULL && zhandle->libzfs_sharehdl != NULL) { 646d8689a57Sdougm if (_sa_fini != NULL) 647d8689a57Sdougm _sa_fini(zhandle->libzfs_sharehdl); 648d8689a57Sdougm zhandle->libzfs_sharehdl = NULL; 64967331909Sdougm } 65067331909Sdougm } 65167331909Sdougm 65267331909Sdougm /* 65367331909Sdougm * zfs_parse_options(options, proto) 65467331909Sdougm * 65567331909Sdougm * Call the legacy parse interface to get the protocol specific 65667331909Sdougm * options using the NULL arg to indicate that this is a "parse" only. 65767331909Sdougm */ 65867331909Sdougm int 659da6c28aaSamw zfs_parse_options(char *options, zfs_share_proto_t proto) 66067331909Sdougm { 6613cb34c60Sahrens if (_sa_parse_legacy_options != NULL) { 6623cb34c60Sahrens return (_sa_parse_legacy_options(NULL, options, 6633cb34c60Sahrens proto_table[proto].p_name)); 6643cb34c60Sahrens } 6653cb34c60Sahrens return (SA_CONFIG_ERR); 66667331909Sdougm } 66767331909Sdougm 66867331909Sdougm /* 66967331909Sdougm * zfs_sa_find_share(handle, path) 67067331909Sdougm * 67167331909Sdougm * wrapper around sa_find_share to find a share path in the 67267331909Sdougm * configuration. 67367331909Sdougm */ 67467331909Sdougm static sa_share_t 67567331909Sdougm zfs_sa_find_share(sa_handle_t handle, char *path) 67667331909Sdougm { 67767331909Sdougm if (_sa_find_share != NULL) 678d8689a57Sdougm return (_sa_find_share(handle, path)); 67967331909Sdougm return (NULL); 68067331909Sdougm } 68167331909Sdougm 68267331909Sdougm /* 68367331909Sdougm * zfs_sa_enable_share(share, proto) 68467331909Sdougm * 68567331909Sdougm * Wrapper for sa_enable_share which enables a share for a specified 68667331909Sdougm * protocol. 68767331909Sdougm */ 68867331909Sdougm static int 68967331909Sdougm zfs_sa_enable_share(sa_share_t share, char *proto) 69067331909Sdougm { 69167331909Sdougm if (_sa_enable_share != NULL) 692d8689a57Sdougm return (_sa_enable_share(share, proto)); 69367331909Sdougm return (SA_CONFIG_ERR); 69467331909Sdougm } 69567331909Sdougm 69667331909Sdougm /* 69767331909Sdougm * zfs_sa_disable_share(share, proto) 69867331909Sdougm * 69967331909Sdougm * Wrapper for sa_enable_share which disables a share for a specified 70067331909Sdougm * protocol. 70167331909Sdougm */ 70267331909Sdougm static int 70367331909Sdougm zfs_sa_disable_share(sa_share_t share, char *proto) 70467331909Sdougm { 70567331909Sdougm if (_sa_disable_share != NULL) 706d8689a57Sdougm return (_sa_disable_share(share, proto)); 70767331909Sdougm return (SA_CONFIG_ERR); 70867331909Sdougm } 70967331909Sdougm 710fa9e4066Sahrens /* 711da6c28aaSamw * Share the given filesystem according to the options in the specified 712da6c28aaSamw * protocol specific properties (sharenfs, sharesmb). We rely 71367331909Sdougm * on "libshare" to the dirty work for us. 714fa9e4066Sahrens */ 715da6c28aaSamw static int 716da6c28aaSamw zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto) 717fa9e4066Sahrens { 718fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 719fa9e4066Sahrens char shareopts[ZFS_MAXPROPLEN]; 7205b6e0c46Sdougm char sourcestr[ZFS_MAXPROPLEN]; 72199653d4eSeschrock libzfs_handle_t *hdl = zhp->zfs_hdl; 72267331909Sdougm sa_share_t share; 723da6c28aaSamw zfs_share_proto_t *curr_proto; 7245b6e0c46Sdougm zprop_source_t sourcetype; 72567331909Sdougm int ret; 726fa9e4066Sahrens 727e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL)) 728fa9e4066Sahrens return (0); 729fa9e4066Sahrens 730da6c28aaSamw for (curr_proto = proto; *curr_proto != PROTO_END; curr_proto++) { 731da6c28aaSamw /* 732da6c28aaSamw * Return success if there are no share options. 733da6c28aaSamw */ 734da6c28aaSamw if (zfs_prop_get(zhp, proto_table[*curr_proto].p_prop, 7355b6e0c46Sdougm shareopts, sizeof (shareopts), &sourcetype, sourcestr, 7365b6e0c46Sdougm ZFS_MAXPROPLEN, B_FALSE) != 0 || 7375b6e0c46Sdougm strcmp(shareopts, "off") == 0) 738da6c28aaSamw continue; 739da6c28aaSamw 74033cde0d0SMatthew Ahrens ret = zfs_init_libshare(hdl, SA_INIT_SHARE_API); 74133cde0d0SMatthew Ahrens if (ret != SA_OK) { 74233cde0d0SMatthew Ahrens (void) zfs_error_fmt(hdl, EZFS_SHARENFSFAILED, 74333cde0d0SMatthew Ahrens dgettext(TEXT_DOMAIN, "cannot share '%s': %s"), 74433cde0d0SMatthew Ahrens zfs_get_name(zhp), _sa_errorstr != NULL ? 74533cde0d0SMatthew Ahrens _sa_errorstr(ret) : ""); 74633cde0d0SMatthew Ahrens return (-1); 74733cde0d0SMatthew Ahrens } 74833cde0d0SMatthew Ahrens 749da6c28aaSamw /* 750da6c28aaSamw * If the 'zoned' property is set, then zfs_is_mountable() 751da6c28aaSamw * will have already bailed out if we are in the global zone. 752da6c28aaSamw * But local zones cannot be NFS servers, so we ignore it for 753da6c28aaSamw * local zones as well. 754da6c28aaSamw */ 755da6c28aaSamw if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) 756da6c28aaSamw continue; 757da6c28aaSamw 758da6c28aaSamw share = zfs_sa_find_share(hdl->libzfs_sharehdl, mountpoint); 7595b6e0c46Sdougm if (share == NULL) { 7605b6e0c46Sdougm /* 7615b6e0c46Sdougm * This may be a new file system that was just 7625b6e0c46Sdougm * created so isn't in the internal cache 7635b6e0c46Sdougm * (second time through). Rather than 7645b6e0c46Sdougm * reloading the entire configuration, we can 7655b6e0c46Sdougm * assume ZFS has done the checking and it is 7665b6e0c46Sdougm * safe to add this to the internal 7675b6e0c46Sdougm * configuration. 7685b6e0c46Sdougm */ 7695b6e0c46Sdougm if (_sa_zfs_process_share(hdl->libzfs_sharehdl, 7705b6e0c46Sdougm NULL, NULL, mountpoint, 7715b6e0c46Sdougm proto_table[*curr_proto].p_name, sourcetype, 7725b6e0c46Sdougm shareopts, sourcestr, zhp->zfs_name) != SA_OK) { 7735b6e0c46Sdougm (void) zfs_error_fmt(hdl, 7745b6e0c46Sdougm proto_table[*curr_proto].p_share_err, 7755b6e0c46Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s'"), 7765b6e0c46Sdougm zfs_get_name(zhp)); 7775b6e0c46Sdougm return (-1); 7785b6e0c46Sdougm } 7795b6e0c46Sdougm hdl->libzfs_shareflags |= ZFSSHARE_MISS; 7805b6e0c46Sdougm share = zfs_sa_find_share(hdl->libzfs_sharehdl, 7815b6e0c46Sdougm mountpoint); 7825b6e0c46Sdougm } 783da6c28aaSamw if (share != NULL) { 784da6c28aaSamw int err; 785da6c28aaSamw err = zfs_sa_enable_share(share, 786da6c28aaSamw proto_table[*curr_proto].p_name); 787da6c28aaSamw if (err != SA_OK) { 788da6c28aaSamw (void) zfs_error_fmt(hdl, 789da6c28aaSamw proto_table[*curr_proto].p_share_err, 790da6c28aaSamw dgettext(TEXT_DOMAIN, "cannot share '%s'"), 791da6c28aaSamw zfs_get_name(zhp)); 792da6c28aaSamw return (-1); 793da6c28aaSamw } 794da6c28aaSamw } else { 795da6c28aaSamw (void) zfs_error_fmt(hdl, 796da6c28aaSamw proto_table[*curr_proto].p_share_err, 797d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s'"), 798d8689a57Sdougm zfs_get_name(zhp)); 799d8689a57Sdougm return (-1); 800d8689a57Sdougm } 801fa9e4066Sahrens 802da6c28aaSamw } 803fa9e4066Sahrens return (0); 804fa9e4066Sahrens } 805fa9e4066Sahrens 806da6c28aaSamw 807da6c28aaSamw int 808da6c28aaSamw zfs_share_nfs(zfs_handle_t *zhp) 809da6c28aaSamw { 810da6c28aaSamw return (zfs_share_proto(zhp, nfs_only)); 811da6c28aaSamw } 812da6c28aaSamw 813da6c28aaSamw int 814da6c28aaSamw zfs_share_smb(zfs_handle_t *zhp) 815da6c28aaSamw { 816da6c28aaSamw return (zfs_share_proto(zhp, smb_only)); 817da6c28aaSamw } 818da6c28aaSamw 819da6c28aaSamw int 820da6c28aaSamw zfs_shareall(zfs_handle_t *zhp) 821da6c28aaSamw { 822da6c28aaSamw return (zfs_share_proto(zhp, share_all_proto)); 823da6c28aaSamw } 824da6c28aaSamw 8253bb79becSeschrock /* 8263bb79becSeschrock * Unshare a filesystem by mountpoint. 8273bb79becSeschrock */ 8283bb79becSeschrock static int 829da6c28aaSamw unshare_one(libzfs_handle_t *hdl, const char *name, const char *mountpoint, 830da6c28aaSamw zfs_share_proto_t proto) 8313bb79becSeschrock { 83267331909Sdougm sa_share_t share; 83367331909Sdougm int err; 83467331909Sdougm char *mntpt; 8353bb79becSeschrock /* 83667331909Sdougm * Mountpoint could get trashed if libshare calls getmntany 837ebedde84SEric Taylor * which it does during API initialization, so strdup the 83867331909Sdougm * value. 8393bb79becSeschrock */ 84067331909Sdougm mntpt = zfs_strdup(hdl, mountpoint); 8413bb79becSeschrock 84267331909Sdougm /* make sure libshare initialized */ 84367331909Sdougm if ((err = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) { 84467331909Sdougm free(mntpt); /* don't need the copy anymore */ 845d1672efbSMarcel Telka return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 846d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"), 847d8689a57Sdougm name, _sa_errorstr(err))); 84867331909Sdougm } 8493bb79becSeschrock 85067331909Sdougm share = zfs_sa_find_share(hdl->libzfs_sharehdl, mntpt); 85167331909Sdougm free(mntpt); /* don't need the copy anymore */ 8523bb79becSeschrock 85367331909Sdougm if (share != NULL) { 854da6c28aaSamw err = zfs_sa_disable_share(share, proto_table[proto].p_name); 85567331909Sdougm if (err != SA_OK) { 856d8689a57Sdougm return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 857d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"), 858d8689a57Sdougm name, _sa_errorstr(err))); 85967331909Sdougm } 86067331909Sdougm } else { 861ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 862d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': not found"), 863d8689a57Sdougm name)); 8643bb79becSeschrock } 8653bb79becSeschrock return (0); 8663bb79becSeschrock } 8673bb79becSeschrock 868fa9e4066Sahrens /* 869fa9e4066Sahrens * Unshare the given filesystem. 870fa9e4066Sahrens */ 871fa9e4066Sahrens int 872da6c28aaSamw zfs_unshare_proto(zfs_handle_t *zhp, const char *mountpoint, 873da6c28aaSamw zfs_share_proto_t *proto) 874fa9e4066Sahrens { 875ebedde84SEric Taylor libzfs_handle_t *hdl = zhp->zfs_hdl; 876ebedde84SEric Taylor struct mnttab entry; 87767331909Sdougm char *mntpt = NULL; 878fa9e4066Sahrens 879fa9e4066Sahrens /* check to see if need to unmount the filesystem */ 88099653d4eSeschrock rewind(zhp->zfs_hdl->libzfs_mnttab); 881d8689a57Sdougm if (mountpoint != NULL) 882ebedde84SEric Taylor mountpoint = mntpt = zfs_strdup(hdl, mountpoint); 883d8689a57Sdougm 884fa9e4066Sahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) && 885ebedde84SEric Taylor libzfs_mnttab_find(hdl, zfs_get_name(zhp), &entry) == 0)) { 886da6c28aaSamw zfs_share_proto_t *curr_proto; 887fa9e4066Sahrens 888fa9e4066Sahrens if (mountpoint == NULL) 889da6c28aaSamw mntpt = zfs_strdup(zhp->zfs_hdl, entry.mnt_mountp); 890fa9e4066Sahrens 891da6c28aaSamw for (curr_proto = proto; *curr_proto != PROTO_END; 892da6c28aaSamw curr_proto++) { 893da6c28aaSamw 894ebedde84SEric Taylor if (is_shared(hdl, mntpt, *curr_proto) && 895ebedde84SEric Taylor unshare_one(hdl, zhp->zfs_name, 896da6c28aaSamw mntpt, *curr_proto) != 0) { 897da6c28aaSamw if (mntpt != NULL) 898da6c28aaSamw free(mntpt); 899da6c28aaSamw return (-1); 900da6c28aaSamw } 90167331909Sdougm } 902fa9e4066Sahrens } 90367331909Sdougm if (mntpt != NULL) 904d8689a57Sdougm free(mntpt); 905fa9e4066Sahrens 906fa9e4066Sahrens return (0); 907fa9e4066Sahrens } 908fa9e4066Sahrens 909da6c28aaSamw int 910da6c28aaSamw zfs_unshare_nfs(zfs_handle_t *zhp, const char *mountpoint) 911da6c28aaSamw { 912da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, nfs_only)); 913da6c28aaSamw } 914da6c28aaSamw 915da6c28aaSamw int 916da6c28aaSamw zfs_unshare_smb(zfs_handle_t *zhp, const char *mountpoint) 917da6c28aaSamw { 918da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, smb_only)); 919da6c28aaSamw } 920da6c28aaSamw 921fa9e4066Sahrens /* 922da6c28aaSamw * Same as zfs_unmountall(), but for NFS and SMB unshares. 923fa9e4066Sahrens */ 924fa9e4066Sahrens int 925da6c28aaSamw zfs_unshareall_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto) 926fa9e4066Sahrens { 927fa9e4066Sahrens prop_changelist_t *clp; 928fa9e4066Sahrens int ret; 929fa9e4066Sahrens 9300069fd67STim Haley clp = changelist_gather(zhp, ZFS_PROP_SHARENFS, 0, 0); 931fa9e4066Sahrens if (clp == NULL) 932fa9e4066Sahrens return (-1); 933fa9e4066Sahrens 934da6c28aaSamw ret = changelist_unshare(clp, proto); 935fa9e4066Sahrens changelist_free(clp); 936fa9e4066Sahrens 937fa9e4066Sahrens return (ret); 938fa9e4066Sahrens } 939fa9e4066Sahrens 940da6c28aaSamw int 941da6c28aaSamw zfs_unshareall_nfs(zfs_handle_t *zhp) 942da6c28aaSamw { 943da6c28aaSamw return (zfs_unshareall_proto(zhp, nfs_only)); 944da6c28aaSamw } 945da6c28aaSamw 946da6c28aaSamw int 947da6c28aaSamw zfs_unshareall_smb(zfs_handle_t *zhp) 948da6c28aaSamw { 949da6c28aaSamw return (zfs_unshareall_proto(zhp, smb_only)); 950da6c28aaSamw } 951da6c28aaSamw 952da6c28aaSamw int 953da6c28aaSamw zfs_unshareall(zfs_handle_t *zhp) 954da6c28aaSamw { 955da6c28aaSamw return (zfs_unshareall_proto(zhp, share_all_proto)); 956da6c28aaSamw } 957da6c28aaSamw 958da6c28aaSamw int 959da6c28aaSamw zfs_unshareall_bypath(zfs_handle_t *zhp, const char *mountpoint) 960da6c28aaSamw { 961da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, share_all_proto)); 962da6c28aaSamw } 963da6c28aaSamw 964fa9e4066Sahrens /* 965fa9e4066Sahrens * Remove the mountpoint associated with the current dataset, if necessary. 966fa9e4066Sahrens * We only remove the underlying directory if: 967fa9e4066Sahrens * 968fa9e4066Sahrens * - The mountpoint is not 'none' or 'legacy' 969fa9e4066Sahrens * - The mountpoint is non-empty 970fa9e4066Sahrens * - The mountpoint is the default or inherited 971fa9e4066Sahrens * - The 'zoned' property is set, or we're in a local zone 972fa9e4066Sahrens * 973fa9e4066Sahrens * Any other directories we leave alone. 974fa9e4066Sahrens */ 975fa9e4066Sahrens void 976fa9e4066Sahrens remove_mountpoint(zfs_handle_t *zhp) 977fa9e4066Sahrens { 978fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 979990b4856Slling zprop_source_t source; 980fa9e4066Sahrens 981e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), 982e9dbad6fSeschrock &source)) 983fa9e4066Sahrens return; 984fa9e4066Sahrens 985990b4856Slling if (source == ZPROP_SRC_DEFAULT || 986990b4856Slling source == ZPROP_SRC_INHERITED) { 987fa9e4066Sahrens /* 988fa9e4066Sahrens * Try to remove the directory, silently ignoring any errors. 989fa9e4066Sahrens * The filesystem may have since been removed or moved around, 990e9dbad6fSeschrock * and this error isn't really useful to the administrator in 991e9dbad6fSeschrock * any way. 992fa9e4066Sahrens */ 993fa9e4066Sahrens (void) rmdir(mountpoint); 994fa9e4066Sahrens } 995fa9e4066Sahrens } 9963bb79becSeschrock 9979d9a58e3SEric Taylor void 9989d9a58e3SEric Taylor libzfs_add_handle(get_all_cb_t *cbp, zfs_handle_t *zhp) 9999d9a58e3SEric Taylor { 10009d9a58e3SEric Taylor if (cbp->cb_alloc == cbp->cb_used) { 10019d9a58e3SEric Taylor size_t newsz; 10029d9a58e3SEric Taylor void *ptr; 10039d9a58e3SEric Taylor 10049d9a58e3SEric Taylor newsz = cbp->cb_alloc ? cbp->cb_alloc * 2 : 64; 10059d9a58e3SEric Taylor ptr = zfs_realloc(zhp->zfs_hdl, 10069d9a58e3SEric Taylor cbp->cb_handles, cbp->cb_alloc * sizeof (void *), 10079d9a58e3SEric Taylor newsz * sizeof (void *)); 10089d9a58e3SEric Taylor cbp->cb_handles = ptr; 10099d9a58e3SEric Taylor cbp->cb_alloc = newsz; 10109d9a58e3SEric Taylor } 10119d9a58e3SEric Taylor cbp->cb_handles[cbp->cb_used++] = zhp; 10129d9a58e3SEric Taylor } 10133bb79becSeschrock 10143bb79becSeschrock static int 10153bb79becSeschrock mount_cb(zfs_handle_t *zhp, void *data) 10163bb79becSeschrock { 10179d9a58e3SEric Taylor get_all_cb_t *cbp = data; 10183bb79becSeschrock 10199d9a58e3SEric Taylor if (!(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM)) { 10203bb79becSeschrock zfs_close(zhp); 10213bb79becSeschrock return (0); 10223bb79becSeschrock } 10233bb79becSeschrock 1024a227b7f4Shs if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_NOAUTO) { 1025a227b7f4Shs zfs_close(zhp); 1026a227b7f4Shs return (0); 1027a227b7f4Shs } 1028a227b7f4Shs 10299c3fd121SMatthew Ahrens /* 10309c3fd121SMatthew Ahrens * If this filesystem is inconsistent and has a receive resume 10319c3fd121SMatthew Ahrens * token, we can not mount it. 10329c3fd121SMatthew Ahrens */ 10339c3fd121SMatthew Ahrens if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) && 10349c3fd121SMatthew Ahrens zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, 10359c3fd121SMatthew Ahrens NULL, 0, NULL, NULL, 0, B_TRUE) == 0) { 10369c3fd121SMatthew Ahrens zfs_close(zhp); 10379c3fd121SMatthew Ahrens return (0); 10389c3fd121SMatthew Ahrens } 10399c3fd121SMatthew Ahrens 10409d9a58e3SEric Taylor libzfs_add_handle(cbp, zhp); 10419d9a58e3SEric Taylor if (zfs_iter_filesystems(zhp, mount_cb, cbp) != 0) { 10429d9a58e3SEric Taylor zfs_close(zhp); 10439d9a58e3SEric Taylor return (-1); 10443bb79becSeschrock } 10459d9a58e3SEric Taylor return (0); 10463bb79becSeschrock } 10473bb79becSeschrock 10489d9a58e3SEric Taylor int 10499d9a58e3SEric Taylor libzfs_dataset_cmp(const void *a, const void *b) 10503bb79becSeschrock { 10513bb79becSeschrock zfs_handle_t **za = (zfs_handle_t **)a; 10523bb79becSeschrock zfs_handle_t **zb = (zfs_handle_t **)b; 10533bb79becSeschrock char mounta[MAXPATHLEN]; 10543bb79becSeschrock char mountb[MAXPATHLEN]; 1055f3861e1aSahl boolean_t gota, gotb; 1056f3861e1aSahl 1057f3861e1aSahl if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 1058f3861e1aSahl verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 1059f3861e1aSahl sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 1060f3861e1aSahl if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 1061f3861e1aSahl verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 1062f3861e1aSahl sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 1063f3861e1aSahl 1064f3861e1aSahl if (gota && gotb) 1065f3861e1aSahl return (strcmp(mounta, mountb)); 10663bb79becSeschrock 1067f3861e1aSahl if (gota) 1068f3861e1aSahl return (-1); 1069f3861e1aSahl if (gotb) 1070f3861e1aSahl return (1); 10713bb79becSeschrock 1072f3861e1aSahl return (strcmp(zfs_get_name(a), zfs_get_name(b))); 10733bb79becSeschrock } 10743bb79becSeschrock 1075f3861e1aSahl /* 1076f3861e1aSahl * Mount and share all datasets within the given pool. This assumes that no 1077f3861e1aSahl * datasets within the pool are currently mounted. Because users can create 1078f3861e1aSahl * complicated nested hierarchies of mountpoints, we first gather all the 1079f3861e1aSahl * datasets and mountpoints within the pool, and sort them by mountpoint. Once 1080f3861e1aSahl * we have the list of all filesystems, we iterate over them in order and mount 1081f3861e1aSahl * and/or share each one. 1082f3861e1aSahl */ 1083f3861e1aSahl #pragma weak zpool_mount_datasets = zpool_enable_datasets 10843bb79becSeschrock int 1085f3861e1aSahl zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags) 10863bb79becSeschrock { 10879d9a58e3SEric Taylor get_all_cb_t cb = { 0 }; 10883bb79becSeschrock libzfs_handle_t *hdl = zhp->zpool_hdl; 10893bb79becSeschrock zfs_handle_t *zfsp; 10903bb79becSeschrock int i, ret = -1; 109167331909Sdougm int *good; 10923bb79becSeschrock 10933bb79becSeschrock /* 1094d87468daSrm * Gather all non-snap datasets within the pool. 10953bb79becSeschrock */ 1096990b4856Slling if ((zfsp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_DATASET)) == NULL) 10973bb79becSeschrock goto out; 10983bb79becSeschrock 10999d9a58e3SEric Taylor libzfs_add_handle(&cb, zfsp); 1100d87468daSrm if (zfs_iter_filesystems(zfsp, mount_cb, &cb) != 0) 11013bb79becSeschrock goto out; 11023bb79becSeschrock /* 11033bb79becSeschrock * Sort the datasets by mountpoint. 11043bb79becSeschrock */ 11059d9a58e3SEric Taylor qsort(cb.cb_handles, cb.cb_used, sizeof (void *), 11069d9a58e3SEric Taylor libzfs_dataset_cmp); 11073bb79becSeschrock 11083bb79becSeschrock /* 110967331909Sdougm * And mount all the datasets, keeping track of which ones 11106e77af0aSDavid Pacheco * succeeded or failed. 11113bb79becSeschrock */ 11126e77af0aSDavid Pacheco if ((good = zfs_alloc(zhp->zpool_hdl, 11136e77af0aSDavid Pacheco cb.cb_used * sizeof (int))) == NULL) 11146e77af0aSDavid Pacheco goto out; 11156e77af0aSDavid Pacheco 11163bb79becSeschrock ret = 0; 11173bb79becSeschrock for (i = 0; i < cb.cb_used; i++) { 11189d9a58e3SEric Taylor if (zfs_mount(cb.cb_handles[i], mntopts, flags) != 0) 11193bb79becSeschrock ret = -1; 1120d8689a57Sdougm else 112167331909Sdougm good[i] = 1; 11223bb79becSeschrock } 11235b6e0c46Sdougm 112467331909Sdougm /* 112567331909Sdougm * Then share all the ones that need to be shared. This needs 112667331909Sdougm * to be a separate pass in order to avoid excessive reloading 112767331909Sdougm * of the configuration. Good should never be NULL since 112867331909Sdougm * zfs_alloc is supposed to exit if memory isn't available. 112967331909Sdougm */ 113067331909Sdougm for (i = 0; i < cb.cb_used; i++) { 11319d9a58e3SEric Taylor if (good[i] && zfs_share(cb.cb_handles[i]) != 0) 113267331909Sdougm ret = -1; 113367331909Sdougm } 113467331909Sdougm 113567331909Sdougm free(good); 11363bb79becSeschrock 11373bb79becSeschrock out: 11383bb79becSeschrock for (i = 0; i < cb.cb_used; i++) 11399d9a58e3SEric Taylor zfs_close(cb.cb_handles[i]); 11409d9a58e3SEric Taylor free(cb.cb_handles); 11413bb79becSeschrock 11423bb79becSeschrock return (ret); 11433bb79becSeschrock } 11443bb79becSeschrock 11453bb79becSeschrock static int 11463bb79becSeschrock mountpoint_compare(const void *a, const void *b) 11473bb79becSeschrock { 11483bb79becSeschrock const char *mounta = *((char **)a); 11493bb79becSeschrock const char *mountb = *((char **)b); 11503bb79becSeschrock 11513bb79becSeschrock return (strcmp(mountb, mounta)); 11523bb79becSeschrock } 11533bb79becSeschrock 1154681d9761SEric Taylor /* alias for 2002/240 */ 1155681d9761SEric Taylor #pragma weak zpool_unmount_datasets = zpool_disable_datasets 1156f3861e1aSahl /* 1157f3861e1aSahl * Unshare and unmount all datasets within the given pool. We don't want to 1158f3861e1aSahl * rely on traversing the DSL to discover the filesystems within the pool, 1159f3861e1aSahl * because this may be expensive (if not all of them are mounted), and can fail 1160f3861e1aSahl * arbitrarily (on I/O error, for example). Instead, we walk /etc/mnttab and 1161f3861e1aSahl * gather all the filesystems that are currently mounted. 1162f3861e1aSahl */ 11633bb79becSeschrock int 1164f3861e1aSahl zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force) 11653bb79becSeschrock { 11663bb79becSeschrock int used, alloc; 11673bb79becSeschrock struct mnttab entry; 11683bb79becSeschrock size_t namelen; 11693bb79becSeschrock char **mountpoints = NULL; 11703bb79becSeschrock zfs_handle_t **datasets = NULL; 11713bb79becSeschrock libzfs_handle_t *hdl = zhp->zpool_hdl; 11723bb79becSeschrock int i; 11733bb79becSeschrock int ret = -1; 11743bb79becSeschrock int flags = (force ? MS_FORCE : 0); 11753bb79becSeschrock 11763bb79becSeschrock namelen = strlen(zhp->zpool_name); 11773bb79becSeschrock 11783bb79becSeschrock rewind(hdl->libzfs_mnttab); 11793bb79becSeschrock used = alloc = 0; 11803bb79becSeschrock while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 11813bb79becSeschrock /* 11823bb79becSeschrock * Ignore non-ZFS entries. 11833bb79becSeschrock */ 11843bb79becSeschrock if (entry.mnt_fstype == NULL || 11853bb79becSeschrock strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 11863bb79becSeschrock continue; 11873bb79becSeschrock 11883bb79becSeschrock /* 11893bb79becSeschrock * Ignore filesystems not within this pool. 11903bb79becSeschrock */ 11913bb79becSeschrock if (entry.mnt_mountp == NULL || 11923bb79becSeschrock strncmp(entry.mnt_special, zhp->zpool_name, namelen) != 0 || 11933bb79becSeschrock (entry.mnt_special[namelen] != '/' && 11943bb79becSeschrock entry.mnt_special[namelen] != '\0')) 11953bb79becSeschrock continue; 11963bb79becSeschrock 11973bb79becSeschrock /* 11983bb79becSeschrock * At this point we've found a filesystem within our pool. Add 11993bb79becSeschrock * it to our growing list. 12003bb79becSeschrock */ 12013bb79becSeschrock if (used == alloc) { 12023bb79becSeschrock if (alloc == 0) { 12033bb79becSeschrock if ((mountpoints = zfs_alloc(hdl, 12043bb79becSeschrock 8 * sizeof (void *))) == NULL) 12053bb79becSeschrock goto out; 12063bb79becSeschrock 12073bb79becSeschrock if ((datasets = zfs_alloc(hdl, 12083bb79becSeschrock 8 * sizeof (void *))) == NULL) 12093bb79becSeschrock goto out; 12103bb79becSeschrock 12113bb79becSeschrock alloc = 8; 12123bb79becSeschrock } else { 1213e9dbad6fSeschrock void *ptr; 12143bb79becSeschrock 1215e9dbad6fSeschrock if ((ptr = zfs_realloc(hdl, mountpoints, 1216e9dbad6fSeschrock alloc * sizeof (void *), 12173bb79becSeschrock alloc * 2 * sizeof (void *))) == NULL) 12183bb79becSeschrock goto out; 1219e9dbad6fSeschrock mountpoints = ptr; 12203bb79becSeschrock 1221e9dbad6fSeschrock if ((ptr = zfs_realloc(hdl, datasets, 1222e9dbad6fSeschrock alloc * sizeof (void *), 12233bb79becSeschrock alloc * 2 * sizeof (void *))) == NULL) 12243bb79becSeschrock goto out; 1225e9dbad6fSeschrock datasets = ptr; 12263bb79becSeschrock 12273bb79becSeschrock alloc *= 2; 12283bb79becSeschrock } 12293bb79becSeschrock } 12303bb79becSeschrock 12313bb79becSeschrock if ((mountpoints[used] = zfs_strdup(hdl, 12323bb79becSeschrock entry.mnt_mountp)) == NULL) 12333bb79becSeschrock goto out; 12343bb79becSeschrock 12353bb79becSeschrock /* 12363bb79becSeschrock * This is allowed to fail, in case there is some I/O error. It 12373bb79becSeschrock * is only used to determine if we need to remove the underlying 12383bb79becSeschrock * mountpoint, so failure is not fatal. 12393bb79becSeschrock */ 12403bb79becSeschrock datasets[used] = make_dataset_handle(hdl, entry.mnt_special); 12413bb79becSeschrock 12423bb79becSeschrock used++; 12433bb79becSeschrock } 12443bb79becSeschrock 12453bb79becSeschrock /* 12463bb79becSeschrock * At this point, we have the entire list of filesystems, so sort it by 12473bb79becSeschrock * mountpoint. 12483bb79becSeschrock */ 12493bb79becSeschrock qsort(mountpoints, used, sizeof (char *), mountpoint_compare); 12503bb79becSeschrock 12513bb79becSeschrock /* 12523bb79becSeschrock * Walk through and first unshare everything. 12533bb79becSeschrock */ 12543bb79becSeschrock for (i = 0; i < used; i++) { 1255da6c28aaSamw zfs_share_proto_t *curr_proto; 1256da6c28aaSamw for (curr_proto = share_all_proto; *curr_proto != PROTO_END; 1257da6c28aaSamw curr_proto++) { 1258da6c28aaSamw if (is_shared(hdl, mountpoints[i], *curr_proto) && 1259da6c28aaSamw unshare_one(hdl, mountpoints[i], 1260da6c28aaSamw mountpoints[i], *curr_proto) != 0) 1261da6c28aaSamw goto out; 1262da6c28aaSamw } 12633bb79becSeschrock } 12643bb79becSeschrock 12653bb79becSeschrock /* 12663bb79becSeschrock * Now unmount everything, removing the underlying directories as 12673bb79becSeschrock * appropriate. 12683bb79becSeschrock */ 12693bb79becSeschrock for (i = 0; i < used; i++) { 12703bb79becSeschrock if (unmount_one(hdl, mountpoints[i], flags) != 0) 12713bb79becSeschrock goto out; 1272e9dbad6fSeschrock } 12733bb79becSeschrock 1274e9dbad6fSeschrock for (i = 0; i < used; i++) { 12753bb79becSeschrock if (datasets[i]) 12763bb79becSeschrock remove_mountpoint(datasets[i]); 12773bb79becSeschrock } 12783bb79becSeschrock 12793bb79becSeschrock ret = 0; 12803bb79becSeschrock out: 12813bb79becSeschrock for (i = 0; i < used; i++) { 12823bb79becSeschrock if (datasets[i]) 12833bb79becSeschrock zfs_close(datasets[i]); 12843bb79becSeschrock free(mountpoints[i]); 12853bb79becSeschrock } 12863bb79becSeschrock free(datasets); 12873bb79becSeschrock free(mountpoints); 12883bb79becSeschrock 12893bb79becSeschrock return (ret); 12903bb79becSeschrock } 1291