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 /* 235b6e0c46Sdougm * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24fa9e4066Sahrens * Use is subject to license terms. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 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() 49f3861e1aSahl * zfs_is_shared_iscsi() 50da6c28aaSamw * zfs_share_proto() 51da6c28aaSamw * zfs_shareall(); 52f3861e1aSahl * zfs_share_iscsi() 53da6c28aaSamw * zfs_unshare_nfs() 54da6c28aaSamw * zfs_unshare_smb() 55da6c28aaSamw * zfs_unshareall_nfs() 56da6c28aaSamw * zfs_unshareall_smb() 57da6c28aaSamw * zfs_unshareall() 58da6c28aaSamw * zfs_unshareall_bypath() 59f3861e1aSahl * zfs_unshare_iscsi() 603bb79becSeschrock * 613bb79becSeschrock * The following functions are available for pool consumers, and will 62f3861e1aSahl * mount/unmount and share/unshare all datasets within pool: 633bb79becSeschrock * 64f3861e1aSahl * zpool_enable_datasets() 65f3861e1aSahl * zpool_disable_datasets() 66fa9e4066Sahrens */ 67fa9e4066Sahrens 68fa9e4066Sahrens #include <dirent.h> 69d8d59944Sahl #include <dlfcn.h> 70fa9e4066Sahrens #include <errno.h> 71fa9e4066Sahrens #include <libgen.h> 72fa9e4066Sahrens #include <libintl.h> 73fa9e4066Sahrens #include <stdio.h> 74fa9e4066Sahrens #include <stdlib.h> 75fa9e4066Sahrens #include <strings.h> 76fa9e4066Sahrens #include <unistd.h> 77fa9e4066Sahrens #include <zone.h> 78fa9e4066Sahrens #include <sys/mntent.h> 79fa9e4066Sahrens #include <sys/mnttab.h> 80fa9e4066Sahrens #include <sys/mount.h> 81fa9e4066Sahrens #include <sys/stat.h> 82fa9e4066Sahrens 83fa9e4066Sahrens #include <libzfs.h> 84fa9e4066Sahrens 85fa9e4066Sahrens #include "libzfs_impl.h" 86fa9e4066Sahrens 8767331909Sdougm #include <libshare.h> 8867331909Sdougm #include <sys/systeminfo.h> 8967331909Sdougm #define MAXISALEN 257 /* based on sysinfo(2) man page */ 9067331909Sdougm 91da6c28aaSamw static int zfs_share_proto(zfs_handle_t *, zfs_share_proto_t *); 92da6c28aaSamw zfs_share_type_t zfs_is_shared_proto(zfs_handle_t *, char **, 93da6c28aaSamw zfs_share_proto_t); 94da6c28aaSamw 95d8d59944Sahl static int (*iscsitgt_zfs_share)(const char *); 96d8d59944Sahl static int (*iscsitgt_zfs_unshare)(const char *); 97d8d59944Sahl static int (*iscsitgt_zfs_is_shared)(const char *); 98ecd6cf80Smarks static int (*iscsitgt_svc_online)(); 99d8d59944Sahl 100da6c28aaSamw /* 101da6c28aaSamw * The share protocols table must be in the same order as the zfs_share_prot_t 102da6c28aaSamw * enum in libzfs_impl.h 103da6c28aaSamw */ 104da6c28aaSamw typedef struct { 105da6c28aaSamw zfs_prop_t p_prop; 106da6c28aaSamw char *p_name; 107da6c28aaSamw int p_share_err; 108da6c28aaSamw int p_unshare_err; 109da6c28aaSamw } proto_table_t; 110da6c28aaSamw 111da6c28aaSamw proto_table_t proto_table[PROTO_END] = { 112da6c28aaSamw {ZFS_PROP_SHARENFS, "nfs", EZFS_SHARENFSFAILED, EZFS_UNSHARENFSFAILED}, 113da6c28aaSamw {ZFS_PROP_SHARESMB, "smb", EZFS_SHARESMBFAILED, EZFS_UNSHARESMBFAILED}, 114da6c28aaSamw }; 115da6c28aaSamw 116da6c28aaSamw zfs_share_proto_t nfs_only[] = { 117da6c28aaSamw PROTO_NFS, 118da6c28aaSamw PROTO_END 119da6c28aaSamw }; 120da6c28aaSamw 121da6c28aaSamw zfs_share_proto_t smb_only[] = { 122da6c28aaSamw PROTO_SMB, 123da6c28aaSamw PROTO_END 124da6c28aaSamw }; 125da6c28aaSamw zfs_share_proto_t share_all_proto[] = { 126da6c28aaSamw PROTO_NFS, 127da6c28aaSamw PROTO_SMB, 128da6c28aaSamw PROTO_END 129da6c28aaSamw }; 130da6c28aaSamw 131d8d59944Sahl #pragma init(zfs_iscsi_init) 132d8d59944Sahl static void 133d8d59944Sahl zfs_iscsi_init(void) 134d8d59944Sahl { 135d8d59944Sahl void *libiscsitgt; 136d8d59944Sahl 137d8d59944Sahl if ((libiscsitgt = dlopen("/lib/libiscsitgt.so.1", 138d8d59944Sahl RTLD_LAZY | RTLD_GLOBAL)) == NULL || 139d8d59944Sahl (iscsitgt_zfs_share = (int (*)(const char *))dlsym(libiscsitgt, 140d8d59944Sahl "iscsitgt_zfs_share")) == NULL || 141d8d59944Sahl (iscsitgt_zfs_unshare = (int (*)(const char *))dlsym(libiscsitgt, 142d8d59944Sahl "iscsitgt_zfs_unshare")) == NULL || 143d8d59944Sahl (iscsitgt_zfs_is_shared = (int (*)(const char *))dlsym(libiscsitgt, 144ecd6cf80Smarks "iscsitgt_zfs_is_shared")) == NULL || 145ecd6cf80Smarks (iscsitgt_svc_online = (int (*)(const char *))dlsym(libiscsitgt, 146ecd6cf80Smarks "iscsitgt_svc_online")) == NULL) { 147d8d59944Sahl iscsitgt_zfs_share = NULL; 148d8d59944Sahl iscsitgt_zfs_unshare = NULL; 149d8d59944Sahl iscsitgt_zfs_is_shared = NULL; 150ecd6cf80Smarks iscsitgt_svc_online = NULL; 151d8d59944Sahl } 152d8d59944Sahl } 153d8d59944Sahl 154fa9e4066Sahrens /* 155da6c28aaSamw * Search the sharetab for the given mountpoint and protocol, returning 156da6c28aaSamw * a zfs_share_type_t value. 157fa9e4066Sahrens */ 158da6c28aaSamw static zfs_share_type_t 159da6c28aaSamw is_shared(libzfs_handle_t *hdl, const char *mountpoint, zfs_share_proto_t proto) 160fa9e4066Sahrens { 161fa9e4066Sahrens char buf[MAXPATHLEN], *tab; 162da6c28aaSamw char *ptr; 163fa9e4066Sahrens 16499653d4eSeschrock if (hdl->libzfs_sharetab == NULL) 165da6c28aaSamw return (SHARED_NOT_SHARED); 166fa9e4066Sahrens 16799653d4eSeschrock (void) fseek(hdl->libzfs_sharetab, 0, SEEK_SET); 168fa9e4066Sahrens 16999653d4eSeschrock while (fgets(buf, sizeof (buf), hdl->libzfs_sharetab) != NULL) { 170fa9e4066Sahrens 171fa9e4066Sahrens /* the mountpoint is the first entry on each line */ 172da6c28aaSamw if ((tab = strchr(buf, '\t')) == NULL) 173da6c28aaSamw continue; 174da6c28aaSamw 175da6c28aaSamw *tab = '\0'; 176da6c28aaSamw if (strcmp(buf, mountpoint) == 0) { 177da6c28aaSamw /* 178da6c28aaSamw * the protocol field is the third field 179da6c28aaSamw * skip over second field 180da6c28aaSamw */ 181da6c28aaSamw ptr = ++tab; 182da6c28aaSamw if ((tab = strchr(ptr, '\t')) == NULL) 183da6c28aaSamw continue; 184da6c28aaSamw ptr = ++tab; 185da6c28aaSamw if ((tab = strchr(ptr, '\t')) == NULL) 186da6c28aaSamw continue; 187fa9e4066Sahrens *tab = '\0'; 188da6c28aaSamw if (strcmp(ptr, 189da6c28aaSamw proto_table[proto].p_name) == 0) { 190da6c28aaSamw switch (proto) { 191da6c28aaSamw case PROTO_NFS: 192da6c28aaSamw return (SHARED_NFS); 193da6c28aaSamw case PROTO_SMB: 194da6c28aaSamw return (SHARED_SMB); 195da6c28aaSamw default: 196da6c28aaSamw return (0); 197da6c28aaSamw } 198da6c28aaSamw } 199fa9e4066Sahrens } 200fa9e4066Sahrens } 201fa9e4066Sahrens 202da6c28aaSamw return (SHARED_NOT_SHARED); 203fa9e4066Sahrens } 204fa9e4066Sahrens 205fa9e4066Sahrens /* 20699653d4eSeschrock * Returns true if the specified directory is empty. If we can't open the 20799653d4eSeschrock * directory at all, return true so that the mount can fail with a more 208fa9e4066Sahrens * informative error message. 209fa9e4066Sahrens */ 21099653d4eSeschrock static boolean_t 211fa9e4066Sahrens dir_is_empty(const char *dirname) 212fa9e4066Sahrens { 213fa9e4066Sahrens DIR *dirp; 214fa9e4066Sahrens struct dirent64 *dp; 215fa9e4066Sahrens 216fa9e4066Sahrens if ((dirp = opendir(dirname)) == NULL) 21799653d4eSeschrock return (B_TRUE); 218fa9e4066Sahrens 219fa9e4066Sahrens while ((dp = readdir64(dirp)) != NULL) { 220fa9e4066Sahrens 221fa9e4066Sahrens if (strcmp(dp->d_name, ".") == 0 || 222fa9e4066Sahrens strcmp(dp->d_name, "..") == 0) 223fa9e4066Sahrens continue; 224fa9e4066Sahrens 225fa9e4066Sahrens (void) closedir(dirp); 22699653d4eSeschrock return (B_FALSE); 227fa9e4066Sahrens } 228fa9e4066Sahrens 229fa9e4066Sahrens (void) closedir(dirp); 23099653d4eSeschrock return (B_TRUE); 231fa9e4066Sahrens } 232fa9e4066Sahrens 233fa9e4066Sahrens /* 234fa9e4066Sahrens * Checks to see if the mount is active. If the filesystem is mounted, we fill 235fa9e4066Sahrens * in 'where' with the current mountpoint, and return 1. Otherwise, we return 236fa9e4066Sahrens * 0. 237fa9e4066Sahrens */ 23899653d4eSeschrock boolean_t 23955434c77Sek is_mounted(libzfs_handle_t *zfs_hdl, const char *special, char **where) 240fa9e4066Sahrens { 241fa9e4066Sahrens struct mnttab search = { 0 }, entry; 242fa9e4066Sahrens 243fa9e4066Sahrens /* 244fa9e4066Sahrens * Search for the entry in /etc/mnttab. We don't bother getting the 245fa9e4066Sahrens * mountpoint, as we can just search for the special device. This will 246fa9e4066Sahrens * also let us find mounts when the mountpoint is 'legacy'. 247fa9e4066Sahrens */ 24855434c77Sek search.mnt_special = (char *)special; 24996dedd18Snd search.mnt_fstype = MNTTYPE_ZFS; 250fa9e4066Sahrens 25155434c77Sek rewind(zfs_hdl->libzfs_mnttab); 25255434c77Sek if (getmntany(zfs_hdl->libzfs_mnttab, &entry, &search) != 0) 25399653d4eSeschrock return (B_FALSE); 254fa9e4066Sahrens 255fa9e4066Sahrens if (where != NULL) 25655434c77Sek *where = zfs_strdup(zfs_hdl, entry.mnt_mountp); 257fa9e4066Sahrens 25899653d4eSeschrock return (B_TRUE); 259fa9e4066Sahrens } 260fa9e4066Sahrens 26155434c77Sek boolean_t 26255434c77Sek zfs_is_mounted(zfs_handle_t *zhp, char **where) 26355434c77Sek { 26455434c77Sek return (is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where)); 26555434c77Sek } 26655434c77Sek 267e9dbad6fSeschrock /* 268e9dbad6fSeschrock * Returns true if the given dataset is mountable, false otherwise. Returns the 269e9dbad6fSeschrock * mountpoint in 'buf'. 270e9dbad6fSeschrock */ 271e9dbad6fSeschrock static boolean_t 272e9dbad6fSeschrock zfs_is_mountable(zfs_handle_t *zhp, char *buf, size_t buflen, 273990b4856Slling zprop_source_t *source) 274e9dbad6fSeschrock { 275e9dbad6fSeschrock char sourceloc[ZFS_MAXNAMELEN]; 276990b4856Slling zprop_source_t sourcetype; 277e9dbad6fSeschrock 278e9dbad6fSeschrock if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type)) 279e9dbad6fSeschrock return (B_FALSE); 280e9dbad6fSeschrock 281e9dbad6fSeschrock verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen, 282e9dbad6fSeschrock &sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0); 283e9dbad6fSeschrock 284e9dbad6fSeschrock if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 || 285e9dbad6fSeschrock strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0) 286e9dbad6fSeschrock return (B_FALSE); 287e9dbad6fSeschrock 288*a227b7f4Shs if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF) 289e9dbad6fSeschrock return (B_FALSE); 290e9dbad6fSeschrock 291e9dbad6fSeschrock if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) && 292e9dbad6fSeschrock getzoneid() == GLOBAL_ZONEID) 293e9dbad6fSeschrock return (B_FALSE); 294e9dbad6fSeschrock 295e9dbad6fSeschrock if (source) 296e9dbad6fSeschrock *source = sourcetype; 297e9dbad6fSeschrock 298e9dbad6fSeschrock return (B_TRUE); 299e9dbad6fSeschrock } 300e9dbad6fSeschrock 301fa9e4066Sahrens /* 302fa9e4066Sahrens * Mount the given filesystem. 303fa9e4066Sahrens */ 304fa9e4066Sahrens int 305fa9e4066Sahrens zfs_mount(zfs_handle_t *zhp, const char *options, int flags) 306fa9e4066Sahrens { 307fa9e4066Sahrens struct stat buf; 308fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 309fa9e4066Sahrens char mntopts[MNT_LINE_MAX]; 31099653d4eSeschrock libzfs_handle_t *hdl = zhp->zfs_hdl; 311fa9e4066Sahrens 312fa9e4066Sahrens if (options == NULL) 313fa9e4066Sahrens mntopts[0] = '\0'; 314fa9e4066Sahrens else 315fa9e4066Sahrens (void) strlcpy(mntopts, options, sizeof (mntopts)); 316fa9e4066Sahrens 317e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL)) 31899653d4eSeschrock return (0); 319fa9e4066Sahrens 320fa9e4066Sahrens /* Create the directory if it doesn't already exist */ 321fa9e4066Sahrens if (lstat(mountpoint, &buf) != 0) { 322fa9e4066Sahrens if (mkdirp(mountpoint, 0755) != 0) { 32399653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 32499653d4eSeschrock "failed to create mountpoint")); 325ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 32699653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), 32799653d4eSeschrock mountpoint)); 328fa9e4066Sahrens } 329fa9e4066Sahrens } 330fa9e4066Sahrens 331fa9e4066Sahrens /* 332fa9e4066Sahrens * Determine if the mountpoint is empty. If so, refuse to perform the 333fa9e4066Sahrens * mount. We don't perform this check if MS_OVERLAY is specified, which 334fa9e4066Sahrens * would defeat the point. We also avoid this check if 'remount' is 335fa9e4066Sahrens * specified. 336fa9e4066Sahrens */ 337fa9e4066Sahrens if ((flags & MS_OVERLAY) == 0 && 338fa9e4066Sahrens strstr(mntopts, MNTOPT_REMOUNT) == NULL && 339fa9e4066Sahrens !dir_is_empty(mountpoint)) { 34099653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 34199653d4eSeschrock "directory is not empty")); 342ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 34399653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), mountpoint)); 344fa9e4066Sahrens } 345fa9e4066Sahrens 346fa9e4066Sahrens /* perform the mount */ 347fa9e4066Sahrens if (mount(zfs_get_name(zhp), mountpoint, MS_OPTIONSTR | flags, 348fa9e4066Sahrens MNTTYPE_ZFS, NULL, 0, mntopts, sizeof (mntopts)) != 0) { 349fa9e4066Sahrens /* 350fa9e4066Sahrens * Generic errors are nasty, but there are just way too many 351fa9e4066Sahrens * from mount(), and they're well-understood. We pick a few 352fa9e4066Sahrens * common ones to improve upon. 353fa9e4066Sahrens */ 354d8689a57Sdougm if (errno == EBUSY) { 35599653d4eSeschrock zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 35699653d4eSeschrock "mountpoint or dataset is busy")); 357ecd6cf80Smarks } else if (errno == EPERM) { 358ecd6cf80Smarks zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 359ecd6cf80Smarks "Insufficient privileges")); 360d8689a57Sdougm } else { 36199653d4eSeschrock zfs_error_aux(hdl, strerror(errno)); 362d8689a57Sdougm } 36399653d4eSeschrock 364ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED, 36599653d4eSeschrock dgettext(TEXT_DOMAIN, "cannot mount '%s'"), 36699653d4eSeschrock zhp->zfs_name)); 367fa9e4066Sahrens } 368fa9e4066Sahrens 369fa9e4066Sahrens return (0); 370fa9e4066Sahrens } 371fa9e4066Sahrens 3723bb79becSeschrock /* 3733bb79becSeschrock * Unmount a single filesystem. 3743bb79becSeschrock */ 3753bb79becSeschrock static int 3763bb79becSeschrock unmount_one(libzfs_handle_t *hdl, const char *mountpoint, int flags) 3773bb79becSeschrock { 3783bb79becSeschrock if (umount2(mountpoint, flags) != 0) { 3793bb79becSeschrock zfs_error_aux(hdl, strerror(errno)); 380ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UMOUNTFAILED, 3813bb79becSeschrock dgettext(TEXT_DOMAIN, "cannot unmount '%s'"), 3823bb79becSeschrock mountpoint)); 3833bb79becSeschrock } 3843bb79becSeschrock 3853bb79becSeschrock return (0); 3863bb79becSeschrock } 3873bb79becSeschrock 388fa9e4066Sahrens /* 389fa9e4066Sahrens * Unmount the given filesystem. 390fa9e4066Sahrens */ 391fa9e4066Sahrens int 392fa9e4066Sahrens zfs_unmount(zfs_handle_t *zhp, const char *mountpoint, int flags) 393fa9e4066Sahrens { 394fa9e4066Sahrens struct mnttab search = { 0 }, entry; 39567331909Sdougm char *mntpt = NULL; 396fa9e4066Sahrens 397fa9e4066Sahrens /* check to see if need to unmount the filesystem */ 3983bb79becSeschrock search.mnt_special = zhp->zfs_name; 39996dedd18Snd search.mnt_fstype = MNTTYPE_ZFS; 40099653d4eSeschrock rewind(zhp->zfs_hdl->libzfs_mnttab); 401fa9e4066Sahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) && 40299653d4eSeschrock getmntany(zhp->zfs_hdl->libzfs_mnttab, &entry, &search) == 0)) { 403fa9e4066Sahrens 40467331909Sdougm /* 40567331909Sdougm * mountpoint may have come from a call to 40667331909Sdougm * getmnt/getmntany if it isn't NULL. If it is NULL, 40767331909Sdougm * we know it comes from getmntany which can then get 40867331909Sdougm * overwritten later. We strdup it to play it safe. 40967331909Sdougm */ 410fa9e4066Sahrens if (mountpoint == NULL) 411d8689a57Sdougm mntpt = zfs_strdup(zhp->zfs_hdl, entry.mnt_mountp); 41267331909Sdougm else 413d8689a57Sdougm mntpt = zfs_strdup(zhp->zfs_hdl, mountpoint); 414fa9e4066Sahrens 415fa9e4066Sahrens /* 4163bb79becSeschrock * Unshare and unmount the filesystem 417fa9e4066Sahrens */ 418da6c28aaSamw if (zfs_unshare_proto(zhp, mntpt, share_all_proto) != 0) 419eb66cf86Sth return (-1); 420eb66cf86Sth 421eb66cf86Sth if (unmount_one(zhp->zfs_hdl, mntpt, flags) != 0) { 42267331909Sdougm free(mntpt); 423da6c28aaSamw (void) zfs_shareall(zhp); 424fa9e4066Sahrens return (-1); 42567331909Sdougm } 42667331909Sdougm free(mntpt); 427fa9e4066Sahrens } 428fa9e4066Sahrens 429fa9e4066Sahrens return (0); 430fa9e4066Sahrens } 431fa9e4066Sahrens 432fa9e4066Sahrens /* 433fa9e4066Sahrens * Unmount this filesystem and any children inheriting the mountpoint property. 434fa9e4066Sahrens * To do this, just act like we're changing the mountpoint property, but don't 435fa9e4066Sahrens * remount the filesystems afterwards. 436fa9e4066Sahrens */ 437fa9e4066Sahrens int 438fa9e4066Sahrens zfs_unmountall(zfs_handle_t *zhp, int flags) 439fa9e4066Sahrens { 440fa9e4066Sahrens prop_changelist_t *clp; 441fa9e4066Sahrens int ret; 442fa9e4066Sahrens 443fa9e4066Sahrens clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, flags); 444fa9e4066Sahrens if (clp == NULL) 445fa9e4066Sahrens return (-1); 446fa9e4066Sahrens 447fa9e4066Sahrens ret = changelist_prefix(clp); 448fa9e4066Sahrens changelist_free(clp); 449fa9e4066Sahrens 450fa9e4066Sahrens return (ret); 451fa9e4066Sahrens } 452fa9e4066Sahrens 453f3861e1aSahl boolean_t 454f3861e1aSahl zfs_is_shared(zfs_handle_t *zhp) 455f3861e1aSahl { 456da6c28aaSamw zfs_share_type_t rc = 0; 457da6c28aaSamw zfs_share_proto_t *curr_proto; 458da6c28aaSamw 459f3861e1aSahl if (ZFS_IS_VOLUME(zhp)) 460f3861e1aSahl return (zfs_is_shared_iscsi(zhp)); 461f3861e1aSahl 462da6c28aaSamw for (curr_proto = share_all_proto; *curr_proto != PROTO_END; 463da6c28aaSamw curr_proto++) 464da6c28aaSamw rc |= zfs_is_shared_proto(zhp, NULL, *curr_proto); 465da6c28aaSamw 466da6c28aaSamw return (rc ? B_TRUE : B_FALSE); 467f3861e1aSahl } 468f3861e1aSahl 469f3861e1aSahl int 470f3861e1aSahl zfs_share(zfs_handle_t *zhp) 471f3861e1aSahl { 472f3861e1aSahl if (ZFS_IS_VOLUME(zhp)) 473f3861e1aSahl return (zfs_share_iscsi(zhp)); 474f3861e1aSahl 475da6c28aaSamw return (zfs_share_proto(zhp, share_all_proto)); 476f3861e1aSahl } 477f3861e1aSahl 478f3861e1aSahl int 479f3861e1aSahl zfs_unshare(zfs_handle_t *zhp) 480f3861e1aSahl { 481f3861e1aSahl if (ZFS_IS_VOLUME(zhp)) 482f3861e1aSahl return (zfs_unshare_iscsi(zhp)); 483f3861e1aSahl 484da6c28aaSamw return (zfs_unshareall(zhp)); 485f3861e1aSahl } 486f3861e1aSahl 487fa9e4066Sahrens /* 488fa9e4066Sahrens * Check to see if the filesystem is currently shared. 489fa9e4066Sahrens */ 490da6c28aaSamw zfs_share_type_t 491da6c28aaSamw zfs_is_shared_proto(zfs_handle_t *zhp, char **where, zfs_share_proto_t proto) 492fa9e4066Sahrens { 493fa9e4066Sahrens char *mountpoint; 494da6c28aaSamw zfs_share_type_t rc; 495fa9e4066Sahrens 496fa9e4066Sahrens if (!zfs_is_mounted(zhp, &mountpoint)) 497da6c28aaSamw return (SHARED_NOT_SHARED); 498fa9e4066Sahrens 499da6c28aaSamw if (rc = is_shared(zhp->zfs_hdl, mountpoint, proto)) { 500fa9e4066Sahrens if (where != NULL) 501fa9e4066Sahrens *where = mountpoint; 502fa9e4066Sahrens else 503fa9e4066Sahrens free(mountpoint); 504da6c28aaSamw return (rc); 505fa9e4066Sahrens } else { 506fa9e4066Sahrens free(mountpoint); 507da6c28aaSamw return (SHARED_NOT_SHARED); 508fa9e4066Sahrens } 509fa9e4066Sahrens } 510fa9e4066Sahrens 511da6c28aaSamw boolean_t 512da6c28aaSamw zfs_is_shared_nfs(zfs_handle_t *zhp, char **where) 513da6c28aaSamw { 514da6c28aaSamw return (zfs_is_shared_proto(zhp, where, 515da6c28aaSamw PROTO_NFS) != SHARED_NOT_SHARED); 516da6c28aaSamw } 517da6c28aaSamw 518da6c28aaSamw boolean_t 519da6c28aaSamw zfs_is_shared_smb(zfs_handle_t *zhp, char **where) 520da6c28aaSamw { 521da6c28aaSamw return (zfs_is_shared_proto(zhp, where, 522da6c28aaSamw PROTO_SMB) != SHARED_NOT_SHARED); 523da6c28aaSamw } 524da6c28aaSamw 52567331909Sdougm /* 52667331909Sdougm * Make sure things will work if libshare isn't installed by using 52767331909Sdougm * wrapper functions that check to see that the pointers to functions 52867331909Sdougm * initialized in _zfs_init_libshare() are actually present. 52967331909Sdougm */ 53067331909Sdougm 53167331909Sdougm static sa_handle_t (*_sa_init)(int); 53267331909Sdougm static void (*_sa_fini)(sa_handle_t); 53367331909Sdougm static sa_share_t (*_sa_find_share)(sa_handle_t, char *); 53467331909Sdougm static int (*_sa_enable_share)(sa_share_t, char *); 53567331909Sdougm static int (*_sa_disable_share)(sa_share_t, char *); 53667331909Sdougm static char *(*_sa_errorstr)(int); 53767331909Sdougm static int (*_sa_parse_legacy_options)(sa_group_t, char *, char *); 5385b6e0c46Sdougm static boolean_t (*_sa_needs_refresh)(sa_handle_t *); 5395b6e0c46Sdougm static libzfs_handle_t *(*_sa_get_zfs_handle)(sa_handle_t); 5405b6e0c46Sdougm static int (*_sa_zfs_process_share)(sa_handle_t, sa_group_t, sa_share_t, 5415b6e0c46Sdougm char *, char *, zprop_source_t, char *, char *, char *); 5425b6e0c46Sdougm static void (*_sa_update_sharetab_ts)(sa_handle_t); 54367331909Sdougm 54467331909Sdougm /* 54567331909Sdougm * _zfs_init_libshare() 54667331909Sdougm * 54767331909Sdougm * Find the libshare.so.1 entry points that we use here and save the 54867331909Sdougm * values to be used later. This is triggered by the runtime loader. 54967331909Sdougm * Make sure the correct ISA version is loaded. 55067331909Sdougm */ 5515b6e0c46Sdougm 55267331909Sdougm #pragma init(_zfs_init_libshare) 55367331909Sdougm static void 55467331909Sdougm _zfs_init_libshare(void) 55567331909Sdougm { 55667331909Sdougm void *libshare; 55767331909Sdougm char path[MAXPATHLEN]; 55867331909Sdougm char isa[MAXISALEN]; 55967331909Sdougm 56067331909Sdougm #if defined(_LP64) 56167331909Sdougm if (sysinfo(SI_ARCHITECTURE_64, isa, MAXISALEN) == -1) 562d8689a57Sdougm isa[0] = '\0'; 56367331909Sdougm #else 56467331909Sdougm isa[0] = '\0'; 56567331909Sdougm #endif 56667331909Sdougm (void) snprintf(path, MAXPATHLEN, 567d8689a57Sdougm "/usr/lib/%s/libshare.so.1", isa); 56867331909Sdougm 56967331909Sdougm if ((libshare = dlopen(path, RTLD_LAZY | RTLD_GLOBAL)) != NULL) { 570d8689a57Sdougm _sa_init = (sa_handle_t (*)(int))dlsym(libshare, "sa_init"); 571d8689a57Sdougm _sa_fini = (void (*)(sa_handle_t))dlsym(libshare, "sa_fini"); 572d8689a57Sdougm _sa_find_share = (sa_share_t (*)(sa_handle_t, char *)) 573d8689a57Sdougm dlsym(libshare, "sa_find_share"); 574d8689a57Sdougm _sa_enable_share = (int (*)(sa_share_t, char *))dlsym(libshare, 575d8689a57Sdougm "sa_enable_share"); 576d8689a57Sdougm _sa_disable_share = (int (*)(sa_share_t, char *))dlsym(libshare, 577d8689a57Sdougm "sa_disable_share"); 578d8689a57Sdougm _sa_errorstr = (char *(*)(int))dlsym(libshare, "sa_errorstr"); 579d8689a57Sdougm _sa_parse_legacy_options = (int (*)(sa_group_t, char *, char *)) 580d8689a57Sdougm dlsym(libshare, "sa_parse_legacy_options"); 5815b6e0c46Sdougm _sa_needs_refresh = (boolean_t (*)(sa_handle_t *)) 5825b6e0c46Sdougm dlsym(libshare, "sa_needs_refresh"); 5835b6e0c46Sdougm _sa_get_zfs_handle = (libzfs_handle_t *(*)(sa_handle_t)) 5845b6e0c46Sdougm dlsym(libshare, "sa_get_zfs_handle"); 5855b6e0c46Sdougm _sa_zfs_process_share = (int (*)(sa_handle_t, sa_group_t, 5865b6e0c46Sdougm sa_share_t, char *, char *, zprop_source_t, char *, 5875b6e0c46Sdougm char *, char *))dlsym(libshare, "sa_zfs_process_share"); 5885b6e0c46Sdougm _sa_update_sharetab_ts = (void (*)(sa_handle_t)) 5895b6e0c46Sdougm dlsym(libshare, "sa_update_sharetab_ts"); 59057b448deSdougm if (_sa_init == NULL || _sa_fini == NULL || 59157b448deSdougm _sa_find_share == NULL || _sa_enable_share == NULL || 59257b448deSdougm _sa_disable_share == NULL || _sa_errorstr == NULL || 5935b6e0c46Sdougm _sa_parse_legacy_options == NULL || 5945b6e0c46Sdougm _sa_needs_refresh == NULL || _sa_get_zfs_handle == NULL || 5955b6e0c46Sdougm _sa_zfs_process_share == NULL || 5965b6e0c46Sdougm _sa_update_sharetab_ts == NULL) { 59757b448deSdougm _sa_init = NULL; 59857b448deSdougm _sa_fini = NULL; 59957b448deSdougm _sa_disable_share = NULL; 60057b448deSdougm _sa_enable_share = NULL; 60157b448deSdougm _sa_errorstr = NULL; 60257b448deSdougm _sa_parse_legacy_options = NULL; 60357b448deSdougm (void) dlclose(libshare); 6045b6e0c46Sdougm _sa_needs_refresh = NULL; 6055b6e0c46Sdougm _sa_get_zfs_handle = NULL; 6065b6e0c46Sdougm _sa_zfs_process_share = NULL; 6075b6e0c46Sdougm _sa_update_sharetab_ts = NULL; 60857b448deSdougm } 60967331909Sdougm } 61067331909Sdougm } 61167331909Sdougm 61267331909Sdougm /* 61367331909Sdougm * zfs_init_libshare(zhandle, service) 61467331909Sdougm * 61567331909Sdougm * Initialize the libshare API if it hasn't already been initialized. 61667331909Sdougm * In all cases it returns 0 if it succeeded and an error if not. The 61767331909Sdougm * service value is which part(s) of the API to initialize and is a 61867331909Sdougm * direct map to the libshare sa_init(service) interface. 61967331909Sdougm */ 62067331909Sdougm int 62167331909Sdougm zfs_init_libshare(libzfs_handle_t *zhandle, int service) 62267331909Sdougm { 62367331909Sdougm int ret = SA_OK; 62467331909Sdougm 625d8689a57Sdougm if (_sa_init == NULL) 626d8689a57Sdougm ret = SA_CONFIG_ERR; 627d8689a57Sdougm 6285b6e0c46Sdougm if (ret == SA_OK && zhandle->libzfs_shareflags & ZFSSHARE_MISS) { 6295b6e0c46Sdougm /* 6305b6e0c46Sdougm * We had a cache miss. Most likely it is a new ZFS 6315b6e0c46Sdougm * dataset that was just created. We want to make sure 6325b6e0c46Sdougm * so check timestamps to see if a different process 6335b6e0c46Sdougm * has updated any of the configuration. If there was 6345b6e0c46Sdougm * some non-ZFS change, we need to re-initialize the 6355b6e0c46Sdougm * internal cache. 6365b6e0c46Sdougm */ 6375b6e0c46Sdougm zhandle->libzfs_shareflags &= ~ZFSSHARE_MISS; 6385b6e0c46Sdougm if (_sa_needs_refresh != NULL && 6395b6e0c46Sdougm _sa_needs_refresh(zhandle->libzfs_sharehdl)) { 6405b6e0c46Sdougm zfs_uninit_libshare(zhandle); 6415b6e0c46Sdougm zhandle->libzfs_sharehdl = _sa_init(service); 6425b6e0c46Sdougm } 6435b6e0c46Sdougm } 6445b6e0c46Sdougm 645d8689a57Sdougm if (ret == SA_OK && zhandle && zhandle->libzfs_sharehdl == NULL) 646d8689a57Sdougm zhandle->libzfs_sharehdl = _sa_init(service); 647d8689a57Sdougm 648d8689a57Sdougm if (ret == SA_OK && zhandle->libzfs_sharehdl == NULL) 649d8689a57Sdougm ret = SA_NO_MEMORY; 650d8689a57Sdougm 65167331909Sdougm return (ret); 65267331909Sdougm } 65367331909Sdougm 65467331909Sdougm /* 65567331909Sdougm * zfs_uninit_libshare(zhandle) 65667331909Sdougm * 65767331909Sdougm * Uninitialize the libshare API if it hasn't already been 65867331909Sdougm * uninitialized. It is OK to call multiple times. 65967331909Sdougm */ 66067331909Sdougm void 66167331909Sdougm zfs_uninit_libshare(libzfs_handle_t *zhandle) 66267331909Sdougm { 66367331909Sdougm if (zhandle != NULL && zhandle->libzfs_sharehdl != NULL) { 664d8689a57Sdougm if (_sa_fini != NULL) 665d8689a57Sdougm _sa_fini(zhandle->libzfs_sharehdl); 666d8689a57Sdougm zhandle->libzfs_sharehdl = NULL; 66767331909Sdougm } 66867331909Sdougm } 66967331909Sdougm 67067331909Sdougm /* 67167331909Sdougm * zfs_parse_options(options, proto) 67267331909Sdougm * 67367331909Sdougm * Call the legacy parse interface to get the protocol specific 67467331909Sdougm * options using the NULL arg to indicate that this is a "parse" only. 67567331909Sdougm */ 67667331909Sdougm int 677da6c28aaSamw zfs_parse_options(char *options, zfs_share_proto_t proto) 67867331909Sdougm { 6793cb34c60Sahrens if (_sa_parse_legacy_options != NULL) { 6803cb34c60Sahrens return (_sa_parse_legacy_options(NULL, options, 6813cb34c60Sahrens proto_table[proto].p_name)); 6823cb34c60Sahrens } 6833cb34c60Sahrens return (SA_CONFIG_ERR); 68467331909Sdougm } 68567331909Sdougm 68667331909Sdougm /* 68767331909Sdougm * zfs_sa_find_share(handle, path) 68867331909Sdougm * 68967331909Sdougm * wrapper around sa_find_share to find a share path in the 69067331909Sdougm * configuration. 69167331909Sdougm */ 69267331909Sdougm static sa_share_t 69367331909Sdougm zfs_sa_find_share(sa_handle_t handle, char *path) 69467331909Sdougm { 69567331909Sdougm if (_sa_find_share != NULL) 696d8689a57Sdougm return (_sa_find_share(handle, path)); 69767331909Sdougm return (NULL); 69867331909Sdougm } 69967331909Sdougm 70067331909Sdougm /* 70167331909Sdougm * zfs_sa_enable_share(share, proto) 70267331909Sdougm * 70367331909Sdougm * Wrapper for sa_enable_share which enables a share for a specified 70467331909Sdougm * protocol. 70567331909Sdougm */ 70667331909Sdougm static int 70767331909Sdougm zfs_sa_enable_share(sa_share_t share, char *proto) 70867331909Sdougm { 70967331909Sdougm if (_sa_enable_share != NULL) 710d8689a57Sdougm return (_sa_enable_share(share, proto)); 71167331909Sdougm return (SA_CONFIG_ERR); 71267331909Sdougm } 71367331909Sdougm 71467331909Sdougm /* 71567331909Sdougm * zfs_sa_disable_share(share, proto) 71667331909Sdougm * 71767331909Sdougm * Wrapper for sa_enable_share which disables a share for a specified 71867331909Sdougm * protocol. 71967331909Sdougm */ 72067331909Sdougm static int 72167331909Sdougm zfs_sa_disable_share(sa_share_t share, char *proto) 72267331909Sdougm { 72367331909Sdougm if (_sa_disable_share != NULL) 724d8689a57Sdougm return (_sa_disable_share(share, proto)); 72567331909Sdougm return (SA_CONFIG_ERR); 72667331909Sdougm } 72767331909Sdougm 728fa9e4066Sahrens /* 729da6c28aaSamw * Share the given filesystem according to the options in the specified 730da6c28aaSamw * protocol specific properties (sharenfs, sharesmb). We rely 73167331909Sdougm * on "libshare" to the dirty work for us. 732fa9e4066Sahrens */ 733da6c28aaSamw static int 734da6c28aaSamw zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto) 735fa9e4066Sahrens { 736fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 737fa9e4066Sahrens char shareopts[ZFS_MAXPROPLEN]; 7385b6e0c46Sdougm char sourcestr[ZFS_MAXPROPLEN]; 73999653d4eSeschrock libzfs_handle_t *hdl = zhp->zfs_hdl; 74067331909Sdougm sa_share_t share; 741da6c28aaSamw zfs_share_proto_t *curr_proto; 7425b6e0c46Sdougm zprop_source_t sourcetype; 74367331909Sdougm int ret; 744fa9e4066Sahrens 745e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL)) 746fa9e4066Sahrens return (0); 747fa9e4066Sahrens 74867331909Sdougm if ((ret = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) { 749d8689a57Sdougm (void) zfs_error_fmt(hdl, EZFS_SHARENFSFAILED, 750d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s': %s"), 7515b6e0c46Sdougm zfs_get_name(zhp), _sa_errorstr != NULL ? 7525b6e0c46Sdougm _sa_errorstr(ret) : ""); 753d8689a57Sdougm return (-1); 75467331909Sdougm } 755da6c28aaSamw 756da6c28aaSamw for (curr_proto = proto; *curr_proto != PROTO_END; curr_proto++) { 757da6c28aaSamw /* 758da6c28aaSamw * Return success if there are no share options. 759da6c28aaSamw */ 760da6c28aaSamw if (zfs_prop_get(zhp, proto_table[*curr_proto].p_prop, 7615b6e0c46Sdougm shareopts, sizeof (shareopts), &sourcetype, sourcestr, 7625b6e0c46Sdougm ZFS_MAXPROPLEN, B_FALSE) != 0 || 7635b6e0c46Sdougm strcmp(shareopts, "off") == 0) 764da6c28aaSamw continue; 765da6c28aaSamw 766da6c28aaSamw /* 767da6c28aaSamw * If the 'zoned' property is set, then zfs_is_mountable() 768da6c28aaSamw * will have already bailed out if we are in the global zone. 769da6c28aaSamw * But local zones cannot be NFS servers, so we ignore it for 770da6c28aaSamw * local zones as well. 771da6c28aaSamw */ 772da6c28aaSamw if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) 773da6c28aaSamw continue; 774da6c28aaSamw 775da6c28aaSamw share = zfs_sa_find_share(hdl->libzfs_sharehdl, mountpoint); 7765b6e0c46Sdougm if (share == NULL) { 7775b6e0c46Sdougm /* 7785b6e0c46Sdougm * This may be a new file system that was just 7795b6e0c46Sdougm * created so isn't in the internal cache 7805b6e0c46Sdougm * (second time through). Rather than 7815b6e0c46Sdougm * reloading the entire configuration, we can 7825b6e0c46Sdougm * assume ZFS has done the checking and it is 7835b6e0c46Sdougm * safe to add this to the internal 7845b6e0c46Sdougm * configuration. 7855b6e0c46Sdougm */ 7865b6e0c46Sdougm if (_sa_zfs_process_share(hdl->libzfs_sharehdl, 7875b6e0c46Sdougm NULL, NULL, mountpoint, 7885b6e0c46Sdougm proto_table[*curr_proto].p_name, sourcetype, 7895b6e0c46Sdougm shareopts, sourcestr, zhp->zfs_name) != SA_OK) { 7905b6e0c46Sdougm (void) zfs_error_fmt(hdl, 7915b6e0c46Sdougm proto_table[*curr_proto].p_share_err, 7925b6e0c46Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s'"), 7935b6e0c46Sdougm zfs_get_name(zhp)); 7945b6e0c46Sdougm return (-1); 7955b6e0c46Sdougm } 7965b6e0c46Sdougm hdl->libzfs_shareflags |= ZFSSHARE_MISS; 7975b6e0c46Sdougm share = zfs_sa_find_share(hdl->libzfs_sharehdl, 7985b6e0c46Sdougm mountpoint); 7995b6e0c46Sdougm } 800da6c28aaSamw if (share != NULL) { 801da6c28aaSamw int err; 802da6c28aaSamw err = zfs_sa_enable_share(share, 803da6c28aaSamw proto_table[*curr_proto].p_name); 804da6c28aaSamw if (err != SA_OK) { 805da6c28aaSamw (void) zfs_error_fmt(hdl, 806da6c28aaSamw proto_table[*curr_proto].p_share_err, 807da6c28aaSamw dgettext(TEXT_DOMAIN, "cannot share '%s'"), 808da6c28aaSamw zfs_get_name(zhp)); 809da6c28aaSamw return (-1); 810da6c28aaSamw } 811da6c28aaSamw } else { 812da6c28aaSamw (void) zfs_error_fmt(hdl, 813da6c28aaSamw proto_table[*curr_proto].p_share_err, 814d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot share '%s'"), 815d8689a57Sdougm zfs_get_name(zhp)); 816d8689a57Sdougm return (-1); 817d8689a57Sdougm } 818fa9e4066Sahrens 819da6c28aaSamw } 820fa9e4066Sahrens return (0); 821fa9e4066Sahrens } 822fa9e4066Sahrens 823da6c28aaSamw 824da6c28aaSamw int 825da6c28aaSamw zfs_share_nfs(zfs_handle_t *zhp) 826da6c28aaSamw { 827da6c28aaSamw return (zfs_share_proto(zhp, nfs_only)); 828da6c28aaSamw } 829da6c28aaSamw 830da6c28aaSamw int 831da6c28aaSamw zfs_share_smb(zfs_handle_t *zhp) 832da6c28aaSamw { 833da6c28aaSamw return (zfs_share_proto(zhp, smb_only)); 834da6c28aaSamw } 835da6c28aaSamw 836da6c28aaSamw int 837da6c28aaSamw zfs_shareall(zfs_handle_t *zhp) 838da6c28aaSamw { 839da6c28aaSamw return (zfs_share_proto(zhp, share_all_proto)); 840da6c28aaSamw } 841da6c28aaSamw 8423bb79becSeschrock /* 8433bb79becSeschrock * Unshare a filesystem by mountpoint. 8443bb79becSeschrock */ 8453bb79becSeschrock static int 846da6c28aaSamw unshare_one(libzfs_handle_t *hdl, const char *name, const char *mountpoint, 847da6c28aaSamw zfs_share_proto_t proto) 8483bb79becSeschrock { 84967331909Sdougm sa_share_t share; 85067331909Sdougm int err; 85167331909Sdougm char *mntpt; 8523bb79becSeschrock /* 85367331909Sdougm * Mountpoint could get trashed if libshare calls getmntany 85467331909Sdougm * which id does during API initialization, so strdup the 85567331909Sdougm * value. 8563bb79becSeschrock */ 85767331909Sdougm mntpt = zfs_strdup(hdl, mountpoint); 8583bb79becSeschrock 85967331909Sdougm /* make sure libshare initialized */ 86067331909Sdougm if ((err = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) { 86167331909Sdougm free(mntpt); /* don't need the copy anymore */ 86267331909Sdougm return (zfs_error_fmt(hdl, EZFS_SHARENFSFAILED, 863d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"), 864d8689a57Sdougm name, _sa_errorstr(err))); 86567331909Sdougm } 8663bb79becSeschrock 86767331909Sdougm share = zfs_sa_find_share(hdl->libzfs_sharehdl, mntpt); 86867331909Sdougm free(mntpt); /* don't need the copy anymore */ 8693bb79becSeschrock 87067331909Sdougm if (share != NULL) { 871da6c28aaSamw err = zfs_sa_disable_share(share, proto_table[proto].p_name); 87267331909Sdougm if (err != SA_OK) { 873d8689a57Sdougm return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 874d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"), 875d8689a57Sdougm name, _sa_errorstr(err))); 87667331909Sdougm } 87767331909Sdougm } else { 878ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED, 879d8689a57Sdougm dgettext(TEXT_DOMAIN, "cannot unshare '%s': not found"), 880d8689a57Sdougm name)); 8813bb79becSeschrock } 8823bb79becSeschrock return (0); 8833bb79becSeschrock } 8843bb79becSeschrock 885fa9e4066Sahrens /* 886fa9e4066Sahrens * Unshare the given filesystem. 887fa9e4066Sahrens */ 888fa9e4066Sahrens int 889da6c28aaSamw zfs_unshare_proto(zfs_handle_t *zhp, const char *mountpoint, 890da6c28aaSamw zfs_share_proto_t *proto) 891fa9e4066Sahrens { 892fa9e4066Sahrens struct mnttab search = { 0 }, entry; 89367331909Sdougm char *mntpt = NULL; 894fa9e4066Sahrens 895fa9e4066Sahrens /* check to see if need to unmount the filesystem */ 896fa9e4066Sahrens search.mnt_special = (char *)zfs_get_name(zhp); 89796dedd18Snd search.mnt_fstype = MNTTYPE_ZFS; 89899653d4eSeschrock rewind(zhp->zfs_hdl->libzfs_mnttab); 899d8689a57Sdougm if (mountpoint != NULL) 900da6c28aaSamw mntpt = zfs_strdup(zhp->zfs_hdl, mountpoint); 901d8689a57Sdougm 902fa9e4066Sahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) && 90399653d4eSeschrock getmntany(zhp->zfs_hdl->libzfs_mnttab, &entry, &search) == 0)) { 904da6c28aaSamw zfs_share_proto_t *curr_proto; 905fa9e4066Sahrens 906fa9e4066Sahrens if (mountpoint == NULL) 907da6c28aaSamw mntpt = zfs_strdup(zhp->zfs_hdl, entry.mnt_mountp); 908fa9e4066Sahrens 909da6c28aaSamw for (curr_proto = proto; *curr_proto != PROTO_END; 910da6c28aaSamw curr_proto++) { 911da6c28aaSamw 912da6c28aaSamw if (is_shared(zhp->zfs_hdl, mntpt, *curr_proto) && 913da6c28aaSamw unshare_one(zhp->zfs_hdl, zhp->zfs_name, 914da6c28aaSamw mntpt, *curr_proto) != 0) { 915da6c28aaSamw if (mntpt != NULL) 916da6c28aaSamw free(mntpt); 917da6c28aaSamw return (-1); 918da6c28aaSamw } 91967331909Sdougm } 920fa9e4066Sahrens } 92167331909Sdougm if (mntpt != NULL) 922d8689a57Sdougm free(mntpt); 923fa9e4066Sahrens 924fa9e4066Sahrens return (0); 925fa9e4066Sahrens } 926fa9e4066Sahrens 927da6c28aaSamw int 928da6c28aaSamw zfs_unshare_nfs(zfs_handle_t *zhp, const char *mountpoint) 929da6c28aaSamw { 930da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, nfs_only)); 931da6c28aaSamw } 932da6c28aaSamw 933da6c28aaSamw int 934da6c28aaSamw zfs_unshare_smb(zfs_handle_t *zhp, const char *mountpoint) 935da6c28aaSamw { 936da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, smb_only)); 937da6c28aaSamw } 938da6c28aaSamw 939fa9e4066Sahrens /* 940da6c28aaSamw * Same as zfs_unmountall(), but for NFS and SMB unshares. 941fa9e4066Sahrens */ 942fa9e4066Sahrens int 943da6c28aaSamw zfs_unshareall_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto) 944fa9e4066Sahrens { 945fa9e4066Sahrens prop_changelist_t *clp; 946fa9e4066Sahrens int ret; 947fa9e4066Sahrens 948fa9e4066Sahrens clp = changelist_gather(zhp, ZFS_PROP_SHARENFS, 0); 949fa9e4066Sahrens if (clp == NULL) 950fa9e4066Sahrens return (-1); 951fa9e4066Sahrens 952da6c28aaSamw ret = changelist_unshare(clp, proto); 953fa9e4066Sahrens changelist_free(clp); 954fa9e4066Sahrens 955fa9e4066Sahrens return (ret); 956fa9e4066Sahrens } 957fa9e4066Sahrens 958da6c28aaSamw int 959da6c28aaSamw zfs_unshareall_nfs(zfs_handle_t *zhp) 960da6c28aaSamw { 961da6c28aaSamw return (zfs_unshareall_proto(zhp, nfs_only)); 962da6c28aaSamw } 963da6c28aaSamw 964da6c28aaSamw int 965da6c28aaSamw zfs_unshareall_smb(zfs_handle_t *zhp) 966da6c28aaSamw { 967da6c28aaSamw return (zfs_unshareall_proto(zhp, smb_only)); 968da6c28aaSamw } 969da6c28aaSamw 970da6c28aaSamw int 971da6c28aaSamw zfs_unshareall(zfs_handle_t *zhp) 972da6c28aaSamw { 973da6c28aaSamw return (zfs_unshareall_proto(zhp, share_all_proto)); 974da6c28aaSamw } 975da6c28aaSamw 976da6c28aaSamw int 977da6c28aaSamw zfs_unshareall_bypath(zfs_handle_t *zhp, const char *mountpoint) 978da6c28aaSamw { 979da6c28aaSamw return (zfs_unshare_proto(zhp, mountpoint, share_all_proto)); 980da6c28aaSamw } 981da6c28aaSamw 982fa9e4066Sahrens /* 983fa9e4066Sahrens * Remove the mountpoint associated with the current dataset, if necessary. 984fa9e4066Sahrens * We only remove the underlying directory if: 985fa9e4066Sahrens * 986fa9e4066Sahrens * - The mountpoint is not 'none' or 'legacy' 987fa9e4066Sahrens * - The mountpoint is non-empty 988fa9e4066Sahrens * - The mountpoint is the default or inherited 989fa9e4066Sahrens * - The 'zoned' property is set, or we're in a local zone 990fa9e4066Sahrens * 991fa9e4066Sahrens * Any other directories we leave alone. 992fa9e4066Sahrens */ 993fa9e4066Sahrens void 994fa9e4066Sahrens remove_mountpoint(zfs_handle_t *zhp) 995fa9e4066Sahrens { 996fa9e4066Sahrens char mountpoint[ZFS_MAXPROPLEN]; 997990b4856Slling zprop_source_t source; 998fa9e4066Sahrens 999e9dbad6fSeschrock if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), 1000e9dbad6fSeschrock &source)) 1001fa9e4066Sahrens return; 1002fa9e4066Sahrens 1003990b4856Slling if (source == ZPROP_SRC_DEFAULT || 1004990b4856Slling source == ZPROP_SRC_INHERITED) { 1005fa9e4066Sahrens /* 1006fa9e4066Sahrens * Try to remove the directory, silently ignoring any errors. 1007fa9e4066Sahrens * The filesystem may have since been removed or moved around, 1008e9dbad6fSeschrock * and this error isn't really useful to the administrator in 1009e9dbad6fSeschrock * any way. 1010fa9e4066Sahrens */ 1011fa9e4066Sahrens (void) rmdir(mountpoint); 1012fa9e4066Sahrens } 1013fa9e4066Sahrens } 10143bb79becSeschrock 1015f3861e1aSahl boolean_t 1016f3861e1aSahl zfs_is_shared_iscsi(zfs_handle_t *zhp) 1017f3861e1aSahl { 1018ecd6cf80Smarks 1019ecd6cf80Smarks /* 1020ecd6cf80Smarks * If iscsi deamon isn't running then we aren't shared 1021ecd6cf80Smarks */ 1022ecd6cf80Smarks if (iscsitgt_svc_online && iscsitgt_svc_online() == 1) 1023da6c28aaSamw return (B_FALSE); 1024ecd6cf80Smarks else 1025ecd6cf80Smarks return (iscsitgt_zfs_is_shared != NULL && 1026ecd6cf80Smarks iscsitgt_zfs_is_shared(zhp->zfs_name) != 0); 1027f3861e1aSahl } 1028f3861e1aSahl 1029f3861e1aSahl int 1030f3861e1aSahl zfs_share_iscsi(zfs_handle_t *zhp) 1031f3861e1aSahl { 1032f3861e1aSahl char shareopts[ZFS_MAXPROPLEN]; 1033f3861e1aSahl const char *dataset = zhp->zfs_name; 1034f3861e1aSahl libzfs_handle_t *hdl = zhp->zfs_hdl; 1035f3861e1aSahl 1036f3861e1aSahl /* 1037f3861e1aSahl * Return success if there are no share options. 1038f3861e1aSahl */ 1039f3861e1aSahl if (zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 1040f3861e1aSahl sizeof (shareopts), NULL, NULL, 0, B_FALSE) != 0 || 1041f3861e1aSahl strcmp(shareopts, "off") == 0) 1042f3861e1aSahl return (0); 1043f3861e1aSahl 1044ecd6cf80Smarks if (iscsitgt_zfs_share == NULL || iscsitgt_zfs_share(dataset) != 0) { 1045ecd6cf80Smarks int error = EZFS_SHAREISCSIFAILED; 1046ecd6cf80Smarks 1047ecd6cf80Smarks /* 1048ecd6cf80Smarks * If service isn't availabele and EPERM was 1049ecd6cf80Smarks * returned then use special error. 1050ecd6cf80Smarks */ 1051ecd6cf80Smarks if (iscsitgt_svc_online && errno == EPERM && 1052ecd6cf80Smarks (iscsitgt_svc_online() != 0)) 1053ecd6cf80Smarks error = EZFS_ISCSISVCUNAVAIL; 1054ecd6cf80Smarks 1055ecd6cf80Smarks return (zfs_error_fmt(hdl, error, 1056f3861e1aSahl dgettext(TEXT_DOMAIN, "cannot share '%s'"), dataset)); 1057ecd6cf80Smarks } 1058f3861e1aSahl 1059f3861e1aSahl return (0); 1060f3861e1aSahl } 1061f3861e1aSahl 1062f3861e1aSahl int 1063f3861e1aSahl zfs_unshare_iscsi(zfs_handle_t *zhp) 1064f3861e1aSahl { 1065f3861e1aSahl const char *dataset = zfs_get_name(zhp); 1066f3861e1aSahl libzfs_handle_t *hdl = zhp->zfs_hdl; 1067f3861e1aSahl 106811d2789dSgw /* 106911d2789dSgw * Return if the volume is not shared 107011d2789dSgw */ 1071da6c28aaSamw if (zfs_is_shared_iscsi(zhp) != SHARED_ISCSI) 107211d2789dSgw return (0); 107311d2789dSgw 1074f3861e1aSahl /* 1075f3861e1aSahl * If this fails with ENODEV it indicates that zvol wasn't shared so 1076f3861e1aSahl * we should return success in that case. 1077f3861e1aSahl */ 1078d8d59944Sahl if (iscsitgt_zfs_unshare == NULL || 1079ecd6cf80Smarks (iscsitgt_zfs_unshare(dataset) != 0 && errno != ENODEV)) { 1080ecd6cf80Smarks if (errno == EPERM) 1081ecd6cf80Smarks zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1082ecd6cf80Smarks "Insufficient privileges to unshare iscsi")); 1083ece3d9b3Slling return (zfs_error_fmt(hdl, EZFS_UNSHAREISCSIFAILED, 1084f3861e1aSahl dgettext(TEXT_DOMAIN, "cannot unshare '%s'"), dataset)); 1085ecd6cf80Smarks } 1086f3861e1aSahl 1087f3861e1aSahl return (0); 1088f3861e1aSahl } 1089f3861e1aSahl 10903bb79becSeschrock typedef struct mount_cbdata { 10913bb79becSeschrock zfs_handle_t **cb_datasets; 10923bb79becSeschrock int cb_used; 10933bb79becSeschrock int cb_alloc; 10943bb79becSeschrock } mount_cbdata_t; 10953bb79becSeschrock 10963bb79becSeschrock static int 10973bb79becSeschrock mount_cb(zfs_handle_t *zhp, void *data) 10983bb79becSeschrock { 10993bb79becSeschrock mount_cbdata_t *cbp = data; 11003bb79becSeschrock 1101f3861e1aSahl if (!(zfs_get_type(zhp) & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME))) { 11023bb79becSeschrock zfs_close(zhp); 11033bb79becSeschrock return (0); 11043bb79becSeschrock } 11053bb79becSeschrock 1106*a227b7f4Shs if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_NOAUTO) { 1107*a227b7f4Shs zfs_close(zhp); 1108*a227b7f4Shs return (0); 1109*a227b7f4Shs } 1110*a227b7f4Shs 11113bb79becSeschrock if (cbp->cb_alloc == cbp->cb_used) { 1112e9dbad6fSeschrock void *ptr; 11133bb79becSeschrock 1114e9dbad6fSeschrock if ((ptr = zfs_realloc(zhp->zfs_hdl, 1115e9dbad6fSeschrock cbp->cb_datasets, cbp->cb_alloc * sizeof (void *), 1116e9dbad6fSeschrock cbp->cb_alloc * 2 * sizeof (void *))) == NULL) 11173bb79becSeschrock return (-1); 1118e9dbad6fSeschrock cbp->cb_datasets = ptr; 11193bb79becSeschrock 1120e9dbad6fSeschrock cbp->cb_alloc *= 2; 11213bb79becSeschrock } 11223bb79becSeschrock 11233bb79becSeschrock cbp->cb_datasets[cbp->cb_used++] = zhp; 1124f3861e1aSahl 1125d87468daSrm return (zfs_iter_filesystems(zhp, mount_cb, cbp)); 11263bb79becSeschrock } 11273bb79becSeschrock 11283bb79becSeschrock static int 1129f3861e1aSahl dataset_cmp(const void *a, const void *b) 11303bb79becSeschrock { 11313bb79becSeschrock zfs_handle_t **za = (zfs_handle_t **)a; 11323bb79becSeschrock zfs_handle_t **zb = (zfs_handle_t **)b; 11333bb79becSeschrock char mounta[MAXPATHLEN]; 11343bb79becSeschrock char mountb[MAXPATHLEN]; 1135f3861e1aSahl boolean_t gota, gotb; 1136f3861e1aSahl 1137f3861e1aSahl if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 1138f3861e1aSahl verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 1139f3861e1aSahl sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 1140f3861e1aSahl if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 1141f3861e1aSahl verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 1142f3861e1aSahl sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 1143f3861e1aSahl 1144f3861e1aSahl if (gota && gotb) 1145f3861e1aSahl return (strcmp(mounta, mountb)); 11463bb79becSeschrock 1147f3861e1aSahl if (gota) 1148f3861e1aSahl return (-1); 1149f3861e1aSahl if (gotb) 1150f3861e1aSahl return (1); 11513bb79becSeschrock 1152f3861e1aSahl return (strcmp(zfs_get_name(a), zfs_get_name(b))); 11533bb79becSeschrock } 11543bb79becSeschrock 1155f3861e1aSahl /* 1156f3861e1aSahl * Mount and share all datasets within the given pool. This assumes that no 1157f3861e1aSahl * datasets within the pool are currently mounted. Because users can create 1158f3861e1aSahl * complicated nested hierarchies of mountpoints, we first gather all the 1159f3861e1aSahl * datasets and mountpoints within the pool, and sort them by mountpoint. Once 1160f3861e1aSahl * we have the list of all filesystems, we iterate over them in order and mount 1161f3861e1aSahl * and/or share each one. 1162f3861e1aSahl */ 1163f3861e1aSahl #pragma weak zpool_mount_datasets = zpool_enable_datasets 11643bb79becSeschrock int 1165f3861e1aSahl zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags) 11663bb79becSeschrock { 11673bb79becSeschrock mount_cbdata_t cb = { 0 }; 11683bb79becSeschrock libzfs_handle_t *hdl = zhp->zpool_hdl; 11693bb79becSeschrock zfs_handle_t *zfsp; 11703bb79becSeschrock int i, ret = -1; 117167331909Sdougm int *good; 11723bb79becSeschrock 11733bb79becSeschrock /* 1174d87468daSrm * Gather all non-snap datasets within the pool. 11753bb79becSeschrock */ 11763bb79becSeschrock if ((cb.cb_datasets = zfs_alloc(hdl, 4 * sizeof (void *))) == NULL) 11773bb79becSeschrock return (-1); 11783bb79becSeschrock cb.cb_alloc = 4; 11793bb79becSeschrock 1180990b4856Slling if ((zfsp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_DATASET)) == NULL) 11813bb79becSeschrock goto out; 11823bb79becSeschrock 11833bb79becSeschrock cb.cb_datasets[0] = zfsp; 11843bb79becSeschrock cb.cb_used = 1; 11853bb79becSeschrock 1186d87468daSrm if (zfs_iter_filesystems(zfsp, mount_cb, &cb) != 0) 11873bb79becSeschrock goto out; 11883bb79becSeschrock 11893bb79becSeschrock /* 11903bb79becSeschrock * Sort the datasets by mountpoint. 11913bb79becSeschrock */ 1192f3861e1aSahl qsort(cb.cb_datasets, cb.cb_used, sizeof (void *), dataset_cmp); 11933bb79becSeschrock 11943bb79becSeschrock /* 119567331909Sdougm * And mount all the datasets, keeping track of which ones 119667331909Sdougm * succeeded or failed. By using zfs_alloc(), the good pointer 119767331909Sdougm * will always be non-NULL. 11983bb79becSeschrock */ 119967331909Sdougm good = zfs_alloc(zhp->zpool_hdl, cb.cb_used * sizeof (int)); 12003bb79becSeschrock ret = 0; 12013bb79becSeschrock for (i = 0; i < cb.cb_used; i++) { 1202d8689a57Sdougm if (zfs_mount(cb.cb_datasets[i], mntopts, flags) != 0) 12033bb79becSeschrock ret = -1; 1204d8689a57Sdougm else 120567331909Sdougm good[i] = 1; 12063bb79becSeschrock } 12075b6e0c46Sdougm 120867331909Sdougm /* 120967331909Sdougm * Then share all the ones that need to be shared. This needs 121067331909Sdougm * to be a separate pass in order to avoid excessive reloading 121167331909Sdougm * of the configuration. Good should never be NULL since 121267331909Sdougm * zfs_alloc is supposed to exit if memory isn't available. 121367331909Sdougm */ 121467331909Sdougm for (i = 0; i < cb.cb_used; i++) { 121567331909Sdougm if (good[i] && zfs_share(cb.cb_datasets[i]) != 0) 121667331909Sdougm ret = -1; 121767331909Sdougm } 121867331909Sdougm 121967331909Sdougm free(good); 12203bb79becSeschrock 12213bb79becSeschrock out: 12223bb79becSeschrock for (i = 0; i < cb.cb_used; i++) 12233bb79becSeschrock zfs_close(cb.cb_datasets[i]); 12243bb79becSeschrock free(cb.cb_datasets); 12253bb79becSeschrock 12263bb79becSeschrock return (ret); 12273bb79becSeschrock } 12283bb79becSeschrock 1229f3861e1aSahl 1230f3861e1aSahl static int 1231f3861e1aSahl zvol_cb(const char *dataset, void *data) 1232f3861e1aSahl { 1233f3861e1aSahl libzfs_handle_t *hdl = data; 1234f3861e1aSahl zfs_handle_t *zhp; 1235f3861e1aSahl 1236f3861e1aSahl /* 1237f3861e1aSahl * Ignore snapshots and ignore failures from non-existant datasets. 1238f3861e1aSahl */ 1239f3861e1aSahl if (strchr(dataset, '@') != NULL || 1240f3861e1aSahl (zhp = zfs_open(hdl, dataset, ZFS_TYPE_VOLUME)) == NULL) 1241f3861e1aSahl return (0); 1242f3861e1aSahl 1243ecd6cf80Smarks if (zfs_unshare_iscsi(zhp) != 0) 1244ecd6cf80Smarks return (-1); 1245f3861e1aSahl 1246f3861e1aSahl zfs_close(zhp); 1247f3861e1aSahl 1248f3861e1aSahl return (0); 1249f3861e1aSahl } 1250f3861e1aSahl 12513bb79becSeschrock static int 12523bb79becSeschrock mountpoint_compare(const void *a, const void *b) 12533bb79becSeschrock { 12543bb79becSeschrock const char *mounta = *((char **)a); 12553bb79becSeschrock const char *mountb = *((char **)b); 12563bb79becSeschrock 12573bb79becSeschrock return (strcmp(mountb, mounta)); 12583bb79becSeschrock } 12593bb79becSeschrock 1260f3861e1aSahl /* 1261f3861e1aSahl * Unshare and unmount all datasets within the given pool. We don't want to 1262f3861e1aSahl * rely on traversing the DSL to discover the filesystems within the pool, 1263f3861e1aSahl * because this may be expensive (if not all of them are mounted), and can fail 1264f3861e1aSahl * arbitrarily (on I/O error, for example). Instead, we walk /etc/mnttab and 1265f3861e1aSahl * gather all the filesystems that are currently mounted. 1266f3861e1aSahl */ 1267f3861e1aSahl #pragma weak zpool_unmount_datasets = zpool_disable_datasets 12683bb79becSeschrock int 1269f3861e1aSahl zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force) 12703bb79becSeschrock { 12713bb79becSeschrock int used, alloc; 12723bb79becSeschrock struct mnttab entry; 12733bb79becSeschrock size_t namelen; 12743bb79becSeschrock char **mountpoints = NULL; 12753bb79becSeschrock zfs_handle_t **datasets = NULL; 12763bb79becSeschrock libzfs_handle_t *hdl = zhp->zpool_hdl; 12773bb79becSeschrock int i; 12783bb79becSeschrock int ret = -1; 12793bb79becSeschrock int flags = (force ? MS_FORCE : 0); 12803bb79becSeschrock 1281f3861e1aSahl /* 1282f3861e1aSahl * First unshare all zvols. 1283f3861e1aSahl */ 1284f3861e1aSahl if (zpool_iter_zvol(zhp, zvol_cb, hdl) != 0) 1285f3861e1aSahl return (-1); 1286f3861e1aSahl 12873bb79becSeschrock namelen = strlen(zhp->zpool_name); 12883bb79becSeschrock 12893bb79becSeschrock rewind(hdl->libzfs_mnttab); 12903bb79becSeschrock used = alloc = 0; 12913bb79becSeschrock while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 12923bb79becSeschrock /* 12933bb79becSeschrock * Ignore non-ZFS entries. 12943bb79becSeschrock */ 12953bb79becSeschrock if (entry.mnt_fstype == NULL || 12963bb79becSeschrock strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 12973bb79becSeschrock continue; 12983bb79becSeschrock 12993bb79becSeschrock /* 13003bb79becSeschrock * Ignore filesystems not within this pool. 13013bb79becSeschrock */ 13023bb79becSeschrock if (entry.mnt_mountp == NULL || 13033bb79becSeschrock strncmp(entry.mnt_special, zhp->zpool_name, namelen) != 0 || 13043bb79becSeschrock (entry.mnt_special[namelen] != '/' && 13053bb79becSeschrock entry.mnt_special[namelen] != '\0')) 13063bb79becSeschrock continue; 13073bb79becSeschrock 13083bb79becSeschrock /* 13093bb79becSeschrock * At this point we've found a filesystem within our pool. Add 13103bb79becSeschrock * it to our growing list. 13113bb79becSeschrock */ 13123bb79becSeschrock if (used == alloc) { 13133bb79becSeschrock if (alloc == 0) { 13143bb79becSeschrock if ((mountpoints = zfs_alloc(hdl, 13153bb79becSeschrock 8 * sizeof (void *))) == NULL) 13163bb79becSeschrock goto out; 13173bb79becSeschrock 13183bb79becSeschrock if ((datasets = zfs_alloc(hdl, 13193bb79becSeschrock 8 * sizeof (void *))) == NULL) 13203bb79becSeschrock goto out; 13213bb79becSeschrock 13223bb79becSeschrock alloc = 8; 13233bb79becSeschrock } else { 1324e9dbad6fSeschrock void *ptr; 13253bb79becSeschrock 1326e9dbad6fSeschrock if ((ptr = zfs_realloc(hdl, mountpoints, 1327e9dbad6fSeschrock alloc * sizeof (void *), 13283bb79becSeschrock alloc * 2 * sizeof (void *))) == NULL) 13293bb79becSeschrock goto out; 1330e9dbad6fSeschrock mountpoints = ptr; 13313bb79becSeschrock 1332e9dbad6fSeschrock if ((ptr = zfs_realloc(hdl, datasets, 1333e9dbad6fSeschrock alloc * sizeof (void *), 13343bb79becSeschrock alloc * 2 * sizeof (void *))) == NULL) 13353bb79becSeschrock goto out; 1336e9dbad6fSeschrock datasets = ptr; 13373bb79becSeschrock 13383bb79becSeschrock alloc *= 2; 13393bb79becSeschrock } 13403bb79becSeschrock } 13413bb79becSeschrock 13423bb79becSeschrock if ((mountpoints[used] = zfs_strdup(hdl, 13433bb79becSeschrock entry.mnt_mountp)) == NULL) 13443bb79becSeschrock goto out; 13453bb79becSeschrock 13463bb79becSeschrock /* 13473bb79becSeschrock * This is allowed to fail, in case there is some I/O error. It 13483bb79becSeschrock * is only used to determine if we need to remove the underlying 13493bb79becSeschrock * mountpoint, so failure is not fatal. 13503bb79becSeschrock */ 13513bb79becSeschrock datasets[used] = make_dataset_handle(hdl, entry.mnt_special); 13523bb79becSeschrock 13533bb79becSeschrock used++; 13543bb79becSeschrock } 13553bb79becSeschrock 13563bb79becSeschrock /* 13573bb79becSeschrock * At this point, we have the entire list of filesystems, so sort it by 13583bb79becSeschrock * mountpoint. 13593bb79becSeschrock */ 13603bb79becSeschrock qsort(mountpoints, used, sizeof (char *), mountpoint_compare); 13613bb79becSeschrock 13623bb79becSeschrock /* 13633bb79becSeschrock * Walk through and first unshare everything. 13643bb79becSeschrock */ 13653bb79becSeschrock for (i = 0; i < used; i++) { 1366da6c28aaSamw zfs_share_proto_t *curr_proto; 1367da6c28aaSamw for (curr_proto = share_all_proto; *curr_proto != PROTO_END; 1368da6c28aaSamw curr_proto++) { 1369da6c28aaSamw if (is_shared(hdl, mountpoints[i], *curr_proto) && 1370da6c28aaSamw unshare_one(hdl, mountpoints[i], 1371da6c28aaSamw mountpoints[i], *curr_proto) != 0) 1372da6c28aaSamw goto out; 1373da6c28aaSamw } 13743bb79becSeschrock } 13753bb79becSeschrock 13763bb79becSeschrock /* 13773bb79becSeschrock * Now unmount everything, removing the underlying directories as 13783bb79becSeschrock * appropriate. 13793bb79becSeschrock */ 13803bb79becSeschrock for (i = 0; i < used; i++) { 13813bb79becSeschrock if (unmount_one(hdl, mountpoints[i], flags) != 0) 13823bb79becSeschrock goto out; 1383e9dbad6fSeschrock } 13843bb79becSeschrock 1385e9dbad6fSeschrock for (i = 0; i < used; i++) { 13863bb79becSeschrock if (datasets[i]) 13873bb79becSeschrock remove_mountpoint(datasets[i]); 13883bb79becSeschrock } 13893bb79becSeschrock 13903bb79becSeschrock ret = 0; 13913bb79becSeschrock out: 13923bb79becSeschrock for (i = 0; i < used; i++) { 13933bb79becSeschrock if (datasets[i]) 13943bb79becSeschrock zfs_close(datasets[i]); 13953bb79becSeschrock free(mountpoints[i]); 13963bb79becSeschrock } 13973bb79becSeschrock free(datasets); 13983bb79becSeschrock free(mountpoints); 13993bb79becSeschrock 14003bb79becSeschrock return (ret); 14013bb79becSeschrock } 1402