2008-11-20 20:01:55 +00:00
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Routines to manage ZFS mounts. We separate all the nasty routines that have
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* to deal with the OS. The following functions are the main entry points --
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* they are used by mount and unmount and when changing a filesystem's
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* mountpoint.
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*
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* zfs_is_mounted()
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* zfs_mount()
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* zfs_unmount()
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* zfs_unmountall()
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*
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* This file also contains the functions used to manage sharing filesystems via
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* NFS and iSCSI:
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*
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* zfs_is_shared()
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* zfs_share()
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* zfs_unshare()
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*
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* zfs_is_shared_nfs()
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* zfs_is_shared_smb()
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* zfs_is_shared_iscsi()
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* zfs_share_proto()
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* zfs_shareall();
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* zfs_share_iscsi()
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* zfs_unshare_nfs()
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* zfs_unshare_smb()
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* zfs_unshareall_nfs()
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* zfs_unshareall_smb()
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* zfs_unshareall()
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* zfs_unshareall_bypath()
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* zfs_unshare_iscsi()
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*
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* The following functions are available for pool consumers, and will
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* mount/unmount and share/unshare all datasets within pool:
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*
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* zpool_enable_datasets()
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* zpool_disable_datasets()
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*/
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#include <dirent.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <libgen.h>
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#include <libintl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <unistd.h>
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#include <zone.h>
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#include <sys/mntent.h>
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#include <sys/mnttab.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <libzfs.h>
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#include "libzfs_impl.h"
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#include <libshare.h>
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#include <sys/systeminfo.h>
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#define MAXISALEN 257 /* based on sysinfo(2) man page */
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2008-12-22 20:23:27 +00:00
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#ifdef HAVE_ZPL
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2008-11-20 20:01:55 +00:00
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static int zfs_share_proto(zfs_handle_t *, zfs_share_proto_t *);
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zfs_share_type_t zfs_is_shared_proto(zfs_handle_t *, char **,
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zfs_share_proto_t);
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static int (*iscsitgt_zfs_share)(const char *);
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static int (*iscsitgt_zfs_unshare)(const char *);
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static int (*iscsitgt_zfs_is_shared)(const char *);
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2008-12-04 23:00:44 +00:00
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static int (*iscsitgt_svc_online)(void);
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2008-11-20 20:01:55 +00:00
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/*
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* The share protocols table must be in the same order as the zfs_share_prot_t
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* enum in libzfs_impl.h
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*/
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typedef struct {
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zfs_prop_t p_prop;
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char *p_name;
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int p_share_err;
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int p_unshare_err;
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} proto_table_t;
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proto_table_t proto_table[PROTO_END] = {
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{ZFS_PROP_SHARENFS, "nfs", EZFS_SHARENFSFAILED, EZFS_UNSHARENFSFAILED},
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{ZFS_PROP_SHARESMB, "smb", EZFS_SHARESMBFAILED, EZFS_UNSHARESMBFAILED},
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};
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zfs_share_proto_t nfs_only[] = {
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PROTO_NFS,
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PROTO_END
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};
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zfs_share_proto_t smb_only[] = {
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PROTO_SMB,
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PROTO_END
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};
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zfs_share_proto_t share_all_proto[] = {
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PROTO_NFS,
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PROTO_SMB,
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PROTO_END
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};
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2008-11-21 18:39:47 +00:00
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#ifdef __GNUC__
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static void
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zfs_iscsi_init(void) __attribute__((constructor));
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#else
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2008-11-20 20:01:55 +00:00
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#pragma init(zfs_iscsi_init)
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2008-11-21 18:39:47 +00:00
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#endif
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2008-11-20 20:01:55 +00:00
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static void
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zfs_iscsi_init(void)
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{
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void *libiscsitgt;
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if ((libiscsitgt = dlopen("/lib/libiscsitgt.so.1",
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RTLD_LAZY | RTLD_GLOBAL)) == NULL ||
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(iscsitgt_zfs_share = (int (*)(const char *))dlsym(libiscsitgt,
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"iscsitgt_zfs_share")) == NULL ||
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(iscsitgt_zfs_unshare = (int (*)(const char *))dlsym(libiscsitgt,
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"iscsitgt_zfs_unshare")) == NULL ||
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(iscsitgt_zfs_is_shared = (int (*)(const char *))dlsym(libiscsitgt,
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"iscsitgt_zfs_is_shared")) == NULL ||
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2008-12-04 23:00:44 +00:00
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(iscsitgt_svc_online = (int (*)(void))dlsym(libiscsitgt,
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2008-11-20 20:01:55 +00:00
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"iscsitgt_svc_online")) == NULL) {
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iscsitgt_zfs_share = NULL;
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iscsitgt_zfs_unshare = NULL;
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iscsitgt_zfs_is_shared = NULL;
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iscsitgt_svc_online = NULL;
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}
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}
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/*
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* Search the sharetab for the given mountpoint and protocol, returning
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* a zfs_share_type_t value.
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*/
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static zfs_share_type_t
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is_shared(libzfs_handle_t *hdl, const char *mountpoint, zfs_share_proto_t proto)
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{
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char buf[MAXPATHLEN], *tab;
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char *ptr;
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if (hdl->libzfs_sharetab == NULL)
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return (SHARED_NOT_SHARED);
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(void) fseek(hdl->libzfs_sharetab, 0, SEEK_SET);
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while (fgets(buf, sizeof (buf), hdl->libzfs_sharetab) != NULL) {
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/* the mountpoint is the first entry on each line */
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if ((tab = strchr(buf, '\t')) == NULL)
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continue;
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*tab = '\0';
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if (strcmp(buf, mountpoint) == 0) {
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/*
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* the protocol field is the third field
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* skip over second field
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*/
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ptr = ++tab;
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if ((tab = strchr(ptr, '\t')) == NULL)
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continue;
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ptr = ++tab;
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if ((tab = strchr(ptr, '\t')) == NULL)
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continue;
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*tab = '\0';
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if (strcmp(ptr,
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proto_table[proto].p_name) == 0) {
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switch (proto) {
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case PROTO_NFS:
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return (SHARED_NFS);
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case PROTO_SMB:
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return (SHARED_SMB);
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default:
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return (0);
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}
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}
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}
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}
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return (SHARED_NOT_SHARED);
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}
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/*
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* Returns true if the specified directory is empty. If we can't open the
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* directory at all, return true so that the mount can fail with a more
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* informative error message.
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*/
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static boolean_t
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2008-12-16 22:29:35 +00:00
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dir_is_empty(const char *dirn)
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2008-11-20 20:01:55 +00:00
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{
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DIR *dirp;
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struct dirent64 *dp;
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2008-12-16 22:29:35 +00:00
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if ((dirp = opendir(dirn)) == NULL)
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2008-11-20 20:01:55 +00:00
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return (B_TRUE);
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while ((dp = readdir64(dirp)) != NULL) {
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if (strcmp(dp->d_name, ".") == 0 ||
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strcmp(dp->d_name, "..") == 0)
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continue;
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(void) closedir(dirp);
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return (B_FALSE);
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}
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(void) closedir(dirp);
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return (B_TRUE);
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}
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/*
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* Checks to see if the mount is active. If the filesystem is mounted, we fill
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* in 'where' with the current mountpoint, and return 1. Otherwise, we return
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* 0.
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*/
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boolean_t
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is_mounted(libzfs_handle_t *zfs_hdl, const char *special, char **where)
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{
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struct mnttab search = { 0 }, entry;
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/*
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* Search for the entry in /etc/mnttab. We don't bother getting the
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* mountpoint, as we can just search for the special device. This will
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* also let us find mounts when the mountpoint is 'legacy'.
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*/
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search.mnt_special = (char *)special;
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search.mnt_fstype = MNTTYPE_ZFS;
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rewind(zfs_hdl->libzfs_mnttab);
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if (getmntany(zfs_hdl->libzfs_mnttab, &entry, &search) != 0)
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return (B_FALSE);
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if (where != NULL)
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*where = zfs_strdup(zfs_hdl, entry.mnt_mountp);
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return (B_TRUE);
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}
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boolean_t
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zfs_is_mounted(zfs_handle_t *zhp, char **where)
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{
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return (is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where));
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}
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/*
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* Returns true if the given dataset is mountable, false otherwise. Returns the
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* mountpoint in 'buf'.
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*/
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static boolean_t
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zfs_is_mountable(zfs_handle_t *zhp, char *buf, size_t buflen,
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zprop_source_t *source)
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{
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char sourceloc[ZFS_MAXNAMELEN];
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zprop_source_t sourcetype;
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if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type))
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return (B_FALSE);
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verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen,
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&sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0);
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if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 ||
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strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0)
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return (B_FALSE);
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if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF)
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return (B_FALSE);
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if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) &&
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getzoneid() == GLOBAL_ZONEID)
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return (B_FALSE);
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if (source)
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*source = sourcetype;
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return (B_TRUE);
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}
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/*
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* Mount the given filesystem.
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*/
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int
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zfs_mount(zfs_handle_t *zhp, const char *options, int flags)
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{
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struct stat buf;
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char mountpoint[ZFS_MAXPROPLEN];
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char mntopts[MNT_LINE_MAX];
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libzfs_handle_t *hdl = zhp->zfs_hdl;
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if (options == NULL)
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mntopts[0] = '\0';
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else
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(void) strlcpy(mntopts, options, sizeof (mntopts));
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if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
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return (0);
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/* Create the directory if it doesn't already exist */
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if (lstat(mountpoint, &buf) != 0) {
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if (mkdirp(mountpoint, 0755) != 0) {
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"failed to create mountpoint"));
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return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
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dgettext(TEXT_DOMAIN, "cannot mount '%s'"),
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mountpoint));
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}
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}
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/*
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* Determine if the mountpoint is empty. If so, refuse to perform the
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* mount. We don't perform this check if MS_OVERLAY is specified, which
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* would defeat the point. We also avoid this check if 'remount' is
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* specified.
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*/
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if ((flags & MS_OVERLAY) == 0 &&
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strstr(mntopts, MNTOPT_REMOUNT) == NULL &&
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!dir_is_empty(mountpoint)) {
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"directory is not empty"));
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return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
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dgettext(TEXT_DOMAIN, "cannot mount '%s'"), mountpoint));
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}
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/* perform the mount */
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if (mount(zfs_get_name(zhp), mountpoint, MS_OPTIONSTR | flags,
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MNTTYPE_ZFS, NULL, 0, mntopts, sizeof (mntopts)) != 0) {
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/*
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* Generic errors are nasty, but there are just way too many
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* from mount(), and they're well-understood. We pick a few
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* common ones to improve upon.
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|
*/
|
|
|
|
if (errno == EBUSY) {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"mountpoint or dataset is busy"));
|
|
|
|
} else if (errno == EPERM) {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"Insufficient privileges"));
|
|
|
|
} else {
|
|
|
|
zfs_error_aux(hdl, strerror(errno));
|
|
|
|
}
|
|
|
|
|
|
|
|
return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot mount '%s'"),
|
|
|
|
zhp->zfs_name));
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unmount a single filesystem.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
unmount_one(libzfs_handle_t *hdl, const char *mountpoint, int flags)
|
|
|
|
{
|
|
|
|
if (umount2(mountpoint, flags) != 0) {
|
|
|
|
zfs_error_aux(hdl, strerror(errno));
|
|
|
|
return (zfs_error_fmt(hdl, EZFS_UMOUNTFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot unmount '%s'"),
|
|
|
|
mountpoint));
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unmount the given filesystem.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_unmount(zfs_handle_t *zhp, const char *mountpoint, int flags)
|
|
|
|
{
|
|
|
|
struct mnttab search = { 0 }, entry;
|
|
|
|
char *mntpt = NULL;
|
|
|
|
|
|
|
|
/* check to see if need to unmount the filesystem */
|
|
|
|
search.mnt_special = zhp->zfs_name;
|
|
|
|
search.mnt_fstype = MNTTYPE_ZFS;
|
|
|
|
rewind(zhp->zfs_hdl->libzfs_mnttab);
|
|
|
|
if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) &&
|
|
|
|
getmntany(zhp->zfs_hdl->libzfs_mnttab, &entry, &search) == 0)) {
|
|
|
|
|
|
|
|
/*
|
|
|
|
* mountpoint may have come from a call to
|
|
|
|
* getmnt/getmntany if it isn't NULL. If it is NULL,
|
|
|
|
* we know it comes from getmntany which can then get
|
|
|
|
* overwritten later. We strdup it to play it safe.
|
|
|
|
*/
|
|
|
|
if (mountpoint == NULL)
|
|
|
|
mntpt = zfs_strdup(zhp->zfs_hdl, entry.mnt_mountp);
|
|
|
|
else
|
|
|
|
mntpt = zfs_strdup(zhp->zfs_hdl, mountpoint);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unshare and unmount the filesystem
|
|
|
|
*/
|
|
|
|
if (zfs_unshare_proto(zhp, mntpt, share_all_proto) != 0)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
if (unmount_one(zhp->zfs_hdl, mntpt, flags) != 0) {
|
|
|
|
free(mntpt);
|
|
|
|
(void) zfs_shareall(zhp);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
free(mntpt);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unmount this filesystem and any children inheriting the mountpoint property.
|
|
|
|
* To do this, just act like we're changing the mountpoint property, but don't
|
|
|
|
* remount the filesystems afterwards.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_unmountall(zfs_handle_t *zhp, int flags)
|
|
|
|
{
|
|
|
|
prop_changelist_t *clp;
|
|
|
|
int ret;
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, 0, flags);
|
2008-11-20 20:01:55 +00:00
|
|
|
if (clp == NULL)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
ret = changelist_prefix(clp);
|
|
|
|
changelist_free(clp);
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
zfs_is_shared(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
zfs_share_type_t rc = 0;
|
|
|
|
zfs_share_proto_t *curr_proto;
|
|
|
|
|
|
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
|
|
return (zfs_is_shared_iscsi(zhp));
|
|
|
|
|
|
|
|
for (curr_proto = share_all_proto; *curr_proto != PROTO_END;
|
|
|
|
curr_proto++)
|
|
|
|
rc |= zfs_is_shared_proto(zhp, NULL, *curr_proto);
|
|
|
|
|
|
|
|
return (rc ? B_TRUE : B_FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_share(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
|
|
return (zfs_share_iscsi(zhp));
|
|
|
|
|
|
|
|
return (zfs_share_proto(zhp, share_all_proto));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshare(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
|
|
return (zfs_unshare_iscsi(zhp));
|
|
|
|
|
|
|
|
return (zfs_unshareall(zhp));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check to see if the filesystem is currently shared.
|
|
|
|
*/
|
|
|
|
zfs_share_type_t
|
|
|
|
zfs_is_shared_proto(zfs_handle_t *zhp, char **where, zfs_share_proto_t proto)
|
|
|
|
{
|
|
|
|
char *mountpoint;
|
|
|
|
zfs_share_type_t rc;
|
|
|
|
|
|
|
|
if (!zfs_is_mounted(zhp, &mountpoint))
|
|
|
|
return (SHARED_NOT_SHARED);
|
|
|
|
|
|
|
|
if (rc = is_shared(zhp->zfs_hdl, mountpoint, proto)) {
|
|
|
|
if (where != NULL)
|
|
|
|
*where = mountpoint;
|
|
|
|
else
|
|
|
|
free(mountpoint);
|
|
|
|
return (rc);
|
|
|
|
} else {
|
|
|
|
free(mountpoint);
|
|
|
|
return (SHARED_NOT_SHARED);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
zfs_is_shared_nfs(zfs_handle_t *zhp, char **where)
|
|
|
|
{
|
|
|
|
return (zfs_is_shared_proto(zhp, where,
|
|
|
|
PROTO_NFS) != SHARED_NOT_SHARED);
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
zfs_is_shared_smb(zfs_handle_t *zhp, char **where)
|
|
|
|
{
|
|
|
|
return (zfs_is_shared_proto(zhp, where,
|
|
|
|
PROTO_SMB) != SHARED_NOT_SHARED);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make sure things will work if libshare isn't installed by using
|
|
|
|
* wrapper functions that check to see that the pointers to functions
|
|
|
|
* initialized in _zfs_init_libshare() are actually present.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static sa_handle_t (*_sa_init)(int);
|
|
|
|
static void (*_sa_fini)(sa_handle_t);
|
|
|
|
static sa_share_t (*_sa_find_share)(sa_handle_t, char *);
|
|
|
|
static int (*_sa_enable_share)(sa_share_t, char *);
|
|
|
|
static int (*_sa_disable_share)(sa_share_t, char *);
|
|
|
|
static char *(*_sa_errorstr)(int);
|
|
|
|
static int (*_sa_parse_legacy_options)(sa_group_t, char *, char *);
|
|
|
|
static boolean_t (*_sa_needs_refresh)(sa_handle_t *);
|
|
|
|
static libzfs_handle_t *(*_sa_get_zfs_handle)(sa_handle_t);
|
|
|
|
static int (*_sa_zfs_process_share)(sa_handle_t, sa_group_t, sa_share_t,
|
|
|
|
char *, char *, zprop_source_t, char *, char *, char *);
|
|
|
|
static void (*_sa_update_sharetab_ts)(sa_handle_t);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* _zfs_init_libshare()
|
|
|
|
*
|
|
|
|
* Find the libshare.so.1 entry points that we use here and save the
|
|
|
|
* values to be used later. This is triggered by the runtime loader.
|
|
|
|
* Make sure the correct ISA version is loaded.
|
|
|
|
*/
|
2008-11-21 18:39:47 +00:00
|
|
|
#ifdef __GNUC__
|
|
|
|
static void
|
|
|
|
_zfs_init_libshare(void) __attribute__((constructor));
|
|
|
|
#else
|
2008-11-20 20:01:55 +00:00
|
|
|
#pragma init(_zfs_init_libshare)
|
2008-11-21 18:39:47 +00:00
|
|
|
#endif
|
2008-11-20 20:01:55 +00:00
|
|
|
static void
|
|
|
|
_zfs_init_libshare(void)
|
|
|
|
{
|
|
|
|
void *libshare;
|
|
|
|
char path[MAXPATHLEN];
|
|
|
|
char isa[MAXISALEN];
|
|
|
|
|
|
|
|
#if defined(_LP64)
|
|
|
|
if (sysinfo(SI_ARCHITECTURE_64, isa, MAXISALEN) == -1)
|
|
|
|
isa[0] = '\0';
|
|
|
|
#else
|
|
|
|
isa[0] = '\0';
|
|
|
|
#endif
|
|
|
|
(void) snprintf(path, MAXPATHLEN,
|
|
|
|
"/usr/lib/%s/libshare.so.1", isa);
|
|
|
|
|
|
|
|
if ((libshare = dlopen(path, RTLD_LAZY | RTLD_GLOBAL)) != NULL) {
|
|
|
|
_sa_init = (sa_handle_t (*)(int))dlsym(libshare, "sa_init");
|
|
|
|
_sa_fini = (void (*)(sa_handle_t))dlsym(libshare, "sa_fini");
|
|
|
|
_sa_find_share = (sa_share_t (*)(sa_handle_t, char *))
|
|
|
|
dlsym(libshare, "sa_find_share");
|
|
|
|
_sa_enable_share = (int (*)(sa_share_t, char *))dlsym(libshare,
|
|
|
|
"sa_enable_share");
|
|
|
|
_sa_disable_share = (int (*)(sa_share_t, char *))dlsym(libshare,
|
|
|
|
"sa_disable_share");
|
|
|
|
_sa_errorstr = (char *(*)(int))dlsym(libshare, "sa_errorstr");
|
|
|
|
_sa_parse_legacy_options = (int (*)(sa_group_t, char *, char *))
|
|
|
|
dlsym(libshare, "sa_parse_legacy_options");
|
|
|
|
_sa_needs_refresh = (boolean_t (*)(sa_handle_t *))
|
|
|
|
dlsym(libshare, "sa_needs_refresh");
|
|
|
|
_sa_get_zfs_handle = (libzfs_handle_t *(*)(sa_handle_t))
|
|
|
|
dlsym(libshare, "sa_get_zfs_handle");
|
|
|
|
_sa_zfs_process_share = (int (*)(sa_handle_t, sa_group_t,
|
|
|
|
sa_share_t, char *, char *, zprop_source_t, char *,
|
|
|
|
char *, char *))dlsym(libshare, "sa_zfs_process_share");
|
|
|
|
_sa_update_sharetab_ts = (void (*)(sa_handle_t))
|
|
|
|
dlsym(libshare, "sa_update_sharetab_ts");
|
|
|
|
if (_sa_init == NULL || _sa_fini == NULL ||
|
|
|
|
_sa_find_share == NULL || _sa_enable_share == NULL ||
|
|
|
|
_sa_disable_share == NULL || _sa_errorstr == NULL ||
|
|
|
|
_sa_parse_legacy_options == NULL ||
|
|
|
|
_sa_needs_refresh == NULL || _sa_get_zfs_handle == NULL ||
|
|
|
|
_sa_zfs_process_share == NULL ||
|
|
|
|
_sa_update_sharetab_ts == NULL) {
|
|
|
|
_sa_init = NULL;
|
|
|
|
_sa_fini = NULL;
|
|
|
|
_sa_disable_share = NULL;
|
|
|
|
_sa_enable_share = NULL;
|
|
|
|
_sa_errorstr = NULL;
|
|
|
|
_sa_parse_legacy_options = NULL;
|
|
|
|
(void) dlclose(libshare);
|
|
|
|
_sa_needs_refresh = NULL;
|
|
|
|
_sa_get_zfs_handle = NULL;
|
|
|
|
_sa_zfs_process_share = NULL;
|
|
|
|
_sa_update_sharetab_ts = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* zfs_init_libshare(zhandle, service)
|
|
|
|
*
|
|
|
|
* Initialize the libshare API if it hasn't already been initialized.
|
|
|
|
* In all cases it returns 0 if it succeeded and an error if not. The
|
|
|
|
* service value is which part(s) of the API to initialize and is a
|
|
|
|
* direct map to the libshare sa_init(service) interface.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_init_libshare(libzfs_handle_t *zhandle, int service)
|
|
|
|
{
|
|
|
|
int ret = SA_OK;
|
|
|
|
|
|
|
|
if (_sa_init == NULL)
|
|
|
|
ret = SA_CONFIG_ERR;
|
|
|
|
|
|
|
|
if (ret == SA_OK && zhandle->libzfs_shareflags & ZFSSHARE_MISS) {
|
|
|
|
/*
|
|
|
|
* We had a cache miss. Most likely it is a new ZFS
|
|
|
|
* dataset that was just created. We want to make sure
|
|
|
|
* so check timestamps to see if a different process
|
|
|
|
* has updated any of the configuration. If there was
|
|
|
|
* some non-ZFS change, we need to re-initialize the
|
|
|
|
* internal cache.
|
|
|
|
*/
|
|
|
|
zhandle->libzfs_shareflags &= ~ZFSSHARE_MISS;
|
|
|
|
if (_sa_needs_refresh != NULL &&
|
|
|
|
_sa_needs_refresh(zhandle->libzfs_sharehdl)) {
|
|
|
|
zfs_uninit_libshare(zhandle);
|
|
|
|
zhandle->libzfs_sharehdl = _sa_init(service);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ret == SA_OK && zhandle && zhandle->libzfs_sharehdl == NULL)
|
|
|
|
zhandle->libzfs_sharehdl = _sa_init(service);
|
|
|
|
|
|
|
|
if (ret == SA_OK && zhandle->libzfs_sharehdl == NULL)
|
|
|
|
ret = SA_NO_MEMORY;
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* zfs_uninit_libshare(zhandle)
|
|
|
|
*
|
|
|
|
* Uninitialize the libshare API if it hasn't already been
|
|
|
|
* uninitialized. It is OK to call multiple times.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
zfs_uninit_libshare(libzfs_handle_t *zhandle)
|
|
|
|
{
|
|
|
|
if (zhandle != NULL && zhandle->libzfs_sharehdl != NULL) {
|
|
|
|
if (_sa_fini != NULL)
|
|
|
|
_sa_fini(zhandle->libzfs_sharehdl);
|
|
|
|
zhandle->libzfs_sharehdl = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* zfs_parse_options(options, proto)
|
|
|
|
*
|
|
|
|
* Call the legacy parse interface to get the protocol specific
|
|
|
|
* options using the NULL arg to indicate that this is a "parse" only.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_parse_options(char *options, zfs_share_proto_t proto)
|
|
|
|
{
|
|
|
|
if (_sa_parse_legacy_options != NULL) {
|
|
|
|
return (_sa_parse_legacy_options(NULL, options,
|
|
|
|
proto_table[proto].p_name));
|
|
|
|
}
|
|
|
|
return (SA_CONFIG_ERR);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* zfs_sa_find_share(handle, path)
|
|
|
|
*
|
|
|
|
* wrapper around sa_find_share to find a share path in the
|
|
|
|
* configuration.
|
|
|
|
*/
|
|
|
|
static sa_share_t
|
|
|
|
zfs_sa_find_share(sa_handle_t handle, char *path)
|
|
|
|
{
|
|
|
|
if (_sa_find_share != NULL)
|
|
|
|
return (_sa_find_share(handle, path));
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* zfs_sa_enable_share(share, proto)
|
|
|
|
*
|
|
|
|
* Wrapper for sa_enable_share which enables a share for a specified
|
|
|
|
* protocol.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
zfs_sa_enable_share(sa_share_t share, char *proto)
|
|
|
|
{
|
|
|
|
if (_sa_enable_share != NULL)
|
|
|
|
return (_sa_enable_share(share, proto));
|
|
|
|
return (SA_CONFIG_ERR);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* zfs_sa_disable_share(share, proto)
|
|
|
|
*
|
|
|
|
* Wrapper for sa_enable_share which disables a share for a specified
|
|
|
|
* protocol.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
zfs_sa_disable_share(sa_share_t share, char *proto)
|
|
|
|
{
|
|
|
|
if (_sa_disable_share != NULL)
|
|
|
|
return (_sa_disable_share(share, proto));
|
|
|
|
return (SA_CONFIG_ERR);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Share the given filesystem according to the options in the specified
|
|
|
|
* protocol specific properties (sharenfs, sharesmb). We rely
|
|
|
|
* on "libshare" to the dirty work for us.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
|
|
|
|
{
|
|
|
|
char mountpoint[ZFS_MAXPROPLEN];
|
|
|
|
char shareopts[ZFS_MAXPROPLEN];
|
|
|
|
char sourcestr[ZFS_MAXPROPLEN];
|
|
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
|
|
sa_share_t share;
|
|
|
|
zfs_share_proto_t *curr_proto;
|
|
|
|
zprop_source_t sourcetype;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
if ((ret = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) {
|
|
|
|
(void) zfs_error_fmt(hdl, EZFS_SHARENFSFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot share '%s': %s"),
|
|
|
|
zfs_get_name(zhp), _sa_errorstr != NULL ?
|
|
|
|
_sa_errorstr(ret) : "");
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (curr_proto = proto; *curr_proto != PROTO_END; curr_proto++) {
|
|
|
|
/*
|
|
|
|
* Return success if there are no share options.
|
|
|
|
*/
|
|
|
|
if (zfs_prop_get(zhp, proto_table[*curr_proto].p_prop,
|
|
|
|
shareopts, sizeof (shareopts), &sourcetype, sourcestr,
|
|
|
|
ZFS_MAXPROPLEN, B_FALSE) != 0 ||
|
|
|
|
strcmp(shareopts, "off") == 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the 'zoned' property is set, then zfs_is_mountable()
|
|
|
|
* will have already bailed out if we are in the global zone.
|
|
|
|
* But local zones cannot be NFS servers, so we ignore it for
|
|
|
|
* local zones as well.
|
|
|
|
*/
|
|
|
|
if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
share = zfs_sa_find_share(hdl->libzfs_sharehdl, mountpoint);
|
|
|
|
if (share == NULL) {
|
|
|
|
/*
|
|
|
|
* This may be a new file system that was just
|
|
|
|
* created so isn't in the internal cache
|
|
|
|
* (second time through). Rather than
|
|
|
|
* reloading the entire configuration, we can
|
|
|
|
* assume ZFS has done the checking and it is
|
|
|
|
* safe to add this to the internal
|
|
|
|
* configuration.
|
|
|
|
*/
|
|
|
|
if (_sa_zfs_process_share(hdl->libzfs_sharehdl,
|
|
|
|
NULL, NULL, mountpoint,
|
|
|
|
proto_table[*curr_proto].p_name, sourcetype,
|
|
|
|
shareopts, sourcestr, zhp->zfs_name) != SA_OK) {
|
|
|
|
(void) zfs_error_fmt(hdl,
|
|
|
|
proto_table[*curr_proto].p_share_err,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot share '%s'"),
|
|
|
|
zfs_get_name(zhp));
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
hdl->libzfs_shareflags |= ZFSSHARE_MISS;
|
|
|
|
share = zfs_sa_find_share(hdl->libzfs_sharehdl,
|
|
|
|
mountpoint);
|
|
|
|
}
|
|
|
|
if (share != NULL) {
|
|
|
|
int err;
|
|
|
|
err = zfs_sa_enable_share(share,
|
|
|
|
proto_table[*curr_proto].p_name);
|
|
|
|
if (err != SA_OK) {
|
|
|
|
(void) zfs_error_fmt(hdl,
|
|
|
|
proto_table[*curr_proto].p_share_err,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot share '%s'"),
|
|
|
|
zfs_get_name(zhp));
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
(void) zfs_error_fmt(hdl,
|
|
|
|
proto_table[*curr_proto].p_share_err,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot share '%s'"),
|
|
|
|
zfs_get_name(zhp));
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_share_nfs(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return (zfs_share_proto(zhp, nfs_only));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_share_smb(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return (zfs_share_proto(zhp, smb_only));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_shareall(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return (zfs_share_proto(zhp, share_all_proto));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unshare a filesystem by mountpoint.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
unshare_one(libzfs_handle_t *hdl, const char *name, const char *mountpoint,
|
|
|
|
zfs_share_proto_t proto)
|
|
|
|
{
|
|
|
|
sa_share_t share;
|
|
|
|
int err;
|
|
|
|
char *mntpt;
|
|
|
|
/*
|
|
|
|
* Mountpoint could get trashed if libshare calls getmntany
|
|
|
|
* which id does during API initialization, so strdup the
|
|
|
|
* value.
|
|
|
|
*/
|
|
|
|
mntpt = zfs_strdup(hdl, mountpoint);
|
|
|
|
|
|
|
|
/* make sure libshare initialized */
|
|
|
|
if ((err = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) {
|
|
|
|
free(mntpt); /* don't need the copy anymore */
|
|
|
|
return (zfs_error_fmt(hdl, EZFS_SHARENFSFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"),
|
|
|
|
name, _sa_errorstr(err)));
|
|
|
|
}
|
|
|
|
|
|
|
|
share = zfs_sa_find_share(hdl->libzfs_sharehdl, mntpt);
|
|
|
|
free(mntpt); /* don't need the copy anymore */
|
|
|
|
|
|
|
|
if (share != NULL) {
|
|
|
|
err = zfs_sa_disable_share(share, proto_table[proto].p_name);
|
|
|
|
if (err != SA_OK) {
|
|
|
|
return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"),
|
|
|
|
name, _sa_errorstr(err)));
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot unshare '%s': not found"),
|
|
|
|
name));
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unshare the given filesystem.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_unshare_proto(zfs_handle_t *zhp, const char *mountpoint,
|
|
|
|
zfs_share_proto_t *proto)
|
|
|
|
{
|
|
|
|
struct mnttab search = { 0 }, entry;
|
|
|
|
char *mntpt = NULL;
|
|
|
|
|
|
|
|
/* check to see if need to unmount the filesystem */
|
|
|
|
search.mnt_special = (char *)zfs_get_name(zhp);
|
|
|
|
search.mnt_fstype = MNTTYPE_ZFS;
|
|
|
|
rewind(zhp->zfs_hdl->libzfs_mnttab);
|
|
|
|
if (mountpoint != NULL)
|
|
|
|
mntpt = zfs_strdup(zhp->zfs_hdl, mountpoint);
|
|
|
|
|
|
|
|
if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) &&
|
|
|
|
getmntany(zhp->zfs_hdl->libzfs_mnttab, &entry, &search) == 0)) {
|
|
|
|
zfs_share_proto_t *curr_proto;
|
|
|
|
|
|
|
|
if (mountpoint == NULL)
|
|
|
|
mntpt = zfs_strdup(zhp->zfs_hdl, entry.mnt_mountp);
|
|
|
|
|
|
|
|
for (curr_proto = proto; *curr_proto != PROTO_END;
|
|
|
|
curr_proto++) {
|
|
|
|
|
|
|
|
if (is_shared(zhp->zfs_hdl, mntpt, *curr_proto) &&
|
|
|
|
unshare_one(zhp->zfs_hdl, zhp->zfs_name,
|
|
|
|
mntpt, *curr_proto) != 0) {
|
|
|
|
if (mntpt != NULL)
|
|
|
|
free(mntpt);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (mntpt != NULL)
|
|
|
|
free(mntpt);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshare_nfs(zfs_handle_t *zhp, const char *mountpoint)
|
|
|
|
{
|
|
|
|
return (zfs_unshare_proto(zhp, mountpoint, nfs_only));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshare_smb(zfs_handle_t *zhp, const char *mountpoint)
|
|
|
|
{
|
|
|
|
return (zfs_unshare_proto(zhp, mountpoint, smb_only));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Same as zfs_unmountall(), but for NFS and SMB unshares.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_unshareall_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
|
|
|
|
{
|
|
|
|
prop_changelist_t *clp;
|
|
|
|
int ret;
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_SHARENFS, 0, 0);
|
2008-11-20 20:01:55 +00:00
|
|
|
if (clp == NULL)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
ret = changelist_unshare(clp, proto);
|
|
|
|
changelist_free(clp);
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshareall_nfs(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return (zfs_unshareall_proto(zhp, nfs_only));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshareall_smb(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return (zfs_unshareall_proto(zhp, smb_only));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshareall(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return (zfs_unshareall_proto(zhp, share_all_proto));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshareall_bypath(zfs_handle_t *zhp, const char *mountpoint)
|
|
|
|
{
|
|
|
|
return (zfs_unshare_proto(zhp, mountpoint, share_all_proto));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove the mountpoint associated with the current dataset, if necessary.
|
|
|
|
* We only remove the underlying directory if:
|
|
|
|
*
|
|
|
|
* - The mountpoint is not 'none' or 'legacy'
|
|
|
|
* - The mountpoint is non-empty
|
|
|
|
* - The mountpoint is the default or inherited
|
|
|
|
* - The 'zoned' property is set, or we're in a local zone
|
|
|
|
*
|
|
|
|
* Any other directories we leave alone.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
remove_mountpoint(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
char mountpoint[ZFS_MAXPROPLEN];
|
|
|
|
zprop_source_t source;
|
|
|
|
|
|
|
|
if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint),
|
|
|
|
&source))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (source == ZPROP_SRC_DEFAULT ||
|
|
|
|
source == ZPROP_SRC_INHERITED) {
|
|
|
|
/*
|
|
|
|
* Try to remove the directory, silently ignoring any errors.
|
|
|
|
* The filesystem may have since been removed or moved around,
|
|
|
|
* and this error isn't really useful to the administrator in
|
|
|
|
* any way.
|
|
|
|
*/
|
|
|
|
(void) rmdir(mountpoint);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
zfs_is_shared_iscsi(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If iscsi deamon isn't running then we aren't shared
|
|
|
|
*/
|
|
|
|
if (iscsitgt_svc_online && iscsitgt_svc_online() == 1)
|
|
|
|
return (B_FALSE);
|
|
|
|
else
|
|
|
|
return (iscsitgt_zfs_is_shared != NULL &&
|
|
|
|
iscsitgt_zfs_is_shared(zhp->zfs_name) != 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_share_iscsi(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
char shareopts[ZFS_MAXPROPLEN];
|
|
|
|
const char *dataset = zhp->zfs_name;
|
|
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return success if there are no share options.
|
|
|
|
*/
|
|
|
|
if (zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
|
|
|
|
sizeof (shareopts), NULL, NULL, 0, B_FALSE) != 0 ||
|
|
|
|
strcmp(shareopts, "off") == 0)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
if (iscsitgt_zfs_share == NULL || iscsitgt_zfs_share(dataset) != 0) {
|
|
|
|
int error = EZFS_SHAREISCSIFAILED;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If service isn't availabele and EPERM was
|
|
|
|
* returned then use special error.
|
|
|
|
*/
|
|
|
|
if (iscsitgt_svc_online && errno == EPERM &&
|
|
|
|
(iscsitgt_svc_online() != 0))
|
|
|
|
error = EZFS_ISCSISVCUNAVAIL;
|
|
|
|
|
|
|
|
return (zfs_error_fmt(hdl, error,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot share '%s'"), dataset));
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zfs_unshare_iscsi(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
const char *dataset = zfs_get_name(zhp);
|
|
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return if the volume is not shared
|
|
|
|
*/
|
|
|
|
if (zfs_is_shared_iscsi(zhp) != SHARED_ISCSI)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If this fails with ENODEV it indicates that zvol wasn't shared so
|
|
|
|
* we should return success in that case.
|
|
|
|
*/
|
|
|
|
if (iscsitgt_zfs_unshare == NULL ||
|
|
|
|
(iscsitgt_zfs_unshare(dataset) != 0 && errno != ENODEV)) {
|
|
|
|
if (errno == EPERM)
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"Insufficient privileges to unshare iscsi"));
|
|
|
|
return (zfs_error_fmt(hdl, EZFS_UNSHAREISCSIFAILED,
|
|
|
|
dgettext(TEXT_DOMAIN, "cannot unshare '%s'"), dataset));
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
typedef struct mount_cbdata {
|
|
|
|
zfs_handle_t **cb_datasets;
|
|
|
|
int cb_used;
|
|
|
|
int cb_alloc;
|
|
|
|
} mount_cbdata_t;
|
|
|
|
|
|
|
|
static int
|
|
|
|
mount_cb(zfs_handle_t *zhp, void *data)
|
|
|
|
{
|
|
|
|
mount_cbdata_t *cbp = data;
|
|
|
|
|
|
|
|
if (!(zfs_get_type(zhp) & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME))) {
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_NOAUTO) {
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cbp->cb_alloc == cbp->cb_used) {
|
|
|
|
void *ptr;
|
|
|
|
|
|
|
|
if ((ptr = zfs_realloc(zhp->zfs_hdl,
|
|
|
|
cbp->cb_datasets, cbp->cb_alloc * sizeof (void *),
|
|
|
|
cbp->cb_alloc * 2 * sizeof (void *))) == NULL)
|
|
|
|
return (-1);
|
|
|
|
cbp->cb_datasets = ptr;
|
|
|
|
|
|
|
|
cbp->cb_alloc *= 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
cbp->cb_datasets[cbp->cb_used++] = zhp;
|
|
|
|
|
|
|
|
return (zfs_iter_filesystems(zhp, mount_cb, cbp));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dataset_cmp(const void *a, const void *b)
|
|
|
|
{
|
|
|
|
zfs_handle_t **za = (zfs_handle_t **)a;
|
|
|
|
zfs_handle_t **zb = (zfs_handle_t **)b;
|
|
|
|
char mounta[MAXPATHLEN];
|
|
|
|
char mountb[MAXPATHLEN];
|
|
|
|
boolean_t gota, gotb;
|
|
|
|
|
|
|
|
if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
|
|
|
|
verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
|
|
|
|
sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
|
|
|
|
if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
|
|
|
|
verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
|
|
|
|
sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
|
|
|
|
|
|
|
|
if (gota && gotb)
|
|
|
|
return (strcmp(mounta, mountb));
|
|
|
|
|
|
|
|
if (gota)
|
|
|
|
return (-1);
|
|
|
|
if (gotb)
|
|
|
|
return (1);
|
|
|
|
|
|
|
|
return (strcmp(zfs_get_name(a), zfs_get_name(b)));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mount and share all datasets within the given pool. This assumes that no
|
|
|
|
* datasets within the pool are currently mounted. Because users can create
|
|
|
|
* complicated nested hierarchies of mountpoints, we first gather all the
|
|
|
|
* datasets and mountpoints within the pool, and sort them by mountpoint. Once
|
|
|
|
* we have the list of all filesystems, we iterate over them in order and mount
|
|
|
|
* and/or share each one.
|
|
|
|
*/
|
|
|
|
#pragma weak zpool_mount_datasets = zpool_enable_datasets
|
|
|
|
int
|
|
|
|
zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
|
|
|
|
{
|
|
|
|
mount_cbdata_t cb = { 0 };
|
|
|
|
libzfs_handle_t *hdl = zhp->zpool_hdl;
|
|
|
|
zfs_handle_t *zfsp;
|
|
|
|
int i, ret = -1;
|
|
|
|
int *good;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Gather all non-snap datasets within the pool.
|
|
|
|
*/
|
|
|
|
if ((cb.cb_datasets = zfs_alloc(hdl, 4 * sizeof (void *))) == NULL)
|
|
|
|
return (-1);
|
|
|
|
cb.cb_alloc = 4;
|
|
|
|
|
|
|
|
if ((zfsp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_DATASET)) == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
cb.cb_datasets[0] = zfsp;
|
|
|
|
cb.cb_used = 1;
|
|
|
|
|
|
|
|
if (zfs_iter_filesystems(zfsp, mount_cb, &cb) != 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sort the datasets by mountpoint.
|
|
|
|
*/
|
|
|
|
qsort(cb.cb_datasets, cb.cb_used, sizeof (void *), dataset_cmp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* And mount all the datasets, keeping track of which ones
|
|
|
|
* succeeded or failed. By using zfs_alloc(), the good pointer
|
|
|
|
* will always be non-NULL.
|
|
|
|
*/
|
|
|
|
good = zfs_alloc(zhp->zpool_hdl, cb.cb_used * sizeof (int));
|
|
|
|
ret = 0;
|
|
|
|
for (i = 0; i < cb.cb_used; i++) {
|
|
|
|
if (zfs_mount(cb.cb_datasets[i], mntopts, flags) != 0)
|
|
|
|
ret = -1;
|
|
|
|
else
|
|
|
|
good[i] = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Then share all the ones that need to be shared. This needs
|
|
|
|
* to be a separate pass in order to avoid excessive reloading
|
|
|
|
* of the configuration. Good should never be NULL since
|
|
|
|
* zfs_alloc is supposed to exit if memory isn't available.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < cb.cb_used; i++) {
|
|
|
|
if (good[i] && zfs_share(cb.cb_datasets[i]) != 0)
|
|
|
|
ret = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
free(good);
|
|
|
|
|
|
|
|
out:
|
|
|
|
for (i = 0; i < cb.cb_used; i++)
|
|
|
|
zfs_close(cb.cb_datasets[i]);
|
|
|
|
free(cb.cb_datasets);
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
zvol_cb(const char *dataset, void *data)
|
|
|
|
{
|
|
|
|
libzfs_handle_t *hdl = data;
|
|
|
|
zfs_handle_t *zhp;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ignore snapshots and ignore failures from non-existant datasets.
|
|
|
|
*/
|
|
|
|
if (strchr(dataset, '@') != NULL ||
|
|
|
|
(zhp = zfs_open(hdl, dataset, ZFS_TYPE_VOLUME)) == NULL)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
if (zfs_unshare_iscsi(zhp) != 0)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
zfs_close(zhp);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mountpoint_compare(const void *a, const void *b)
|
|
|
|
{
|
|
|
|
const char *mounta = *((char **)a);
|
|
|
|
const char *mountb = *((char **)b);
|
|
|
|
|
|
|
|
return (strcmp(mountb, mounta));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unshare and unmount all datasets within the given pool. We don't want to
|
|
|
|
* rely on traversing the DSL to discover the filesystems within the pool,
|
|
|
|
* because this may be expensive (if not all of them are mounted), and can fail
|
|
|
|
* arbitrarily (on I/O error, for example). Instead, we walk /etc/mnttab and
|
|
|
|
* gather all the filesystems that are currently mounted.
|
|
|
|
*/
|
|
|
|
#pragma weak zpool_unmount_datasets = zpool_disable_datasets
|
|
|
|
int
|
|
|
|
zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force)
|
|
|
|
{
|
|
|
|
int used, alloc;
|
|
|
|
struct mnttab entry;
|
|
|
|
size_t namelen;
|
|
|
|
char **mountpoints = NULL;
|
|
|
|
zfs_handle_t **datasets = NULL;
|
|
|
|
libzfs_handle_t *hdl = zhp->zpool_hdl;
|
|
|
|
int i;
|
|
|
|
int ret = -1;
|
|
|
|
int flags = (force ? MS_FORCE : 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* First unshare all zvols.
|
|
|
|
*/
|
|
|
|
if (zpool_iter_zvol(zhp, zvol_cb, hdl) != 0)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
namelen = strlen(zhp->zpool_name);
|
|
|
|
|
|
|
|
rewind(hdl->libzfs_mnttab);
|
|
|
|
used = alloc = 0;
|
|
|
|
while (getmntent(hdl->libzfs_mnttab, &entry) == 0) {
|
|
|
|
/*
|
|
|
|
* Ignore non-ZFS entries.
|
|
|
|
*/
|
|
|
|
if (entry.mnt_fstype == NULL ||
|
|
|
|
strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ignore filesystems not within this pool.
|
|
|
|
*/
|
|
|
|
if (entry.mnt_mountp == NULL ||
|
|
|
|
strncmp(entry.mnt_special, zhp->zpool_name, namelen) != 0 ||
|
|
|
|
(entry.mnt_special[namelen] != '/' &&
|
|
|
|
entry.mnt_special[namelen] != '\0'))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* At this point we've found a filesystem within our pool. Add
|
|
|
|
* it to our growing list.
|
|
|
|
*/
|
|
|
|
if (used == alloc) {
|
|
|
|
if (alloc == 0) {
|
|
|
|
if ((mountpoints = zfs_alloc(hdl,
|
|
|
|
8 * sizeof (void *))) == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
if ((datasets = zfs_alloc(hdl,
|
|
|
|
8 * sizeof (void *))) == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
alloc = 8;
|
|
|
|
} else {
|
|
|
|
void *ptr;
|
|
|
|
|
|
|
|
if ((ptr = zfs_realloc(hdl, mountpoints,
|
|
|
|
alloc * sizeof (void *),
|
|
|
|
alloc * 2 * sizeof (void *))) == NULL)
|
|
|
|
goto out;
|
|
|
|
mountpoints = ptr;
|
|
|
|
|
|
|
|
if ((ptr = zfs_realloc(hdl, datasets,
|
|
|
|
alloc * sizeof (void *),
|
|
|
|
alloc * 2 * sizeof (void *))) == NULL)
|
|
|
|
goto out;
|
|
|
|
datasets = ptr;
|
|
|
|
|
|
|
|
alloc *= 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((mountpoints[used] = zfs_strdup(hdl,
|
|
|
|
entry.mnt_mountp)) == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is allowed to fail, in case there is some I/O error. It
|
|
|
|
* is only used to determine if we need to remove the underlying
|
|
|
|
* mountpoint, so failure is not fatal.
|
|
|
|
*/
|
|
|
|
datasets[used] = make_dataset_handle(hdl, entry.mnt_special);
|
|
|
|
|
|
|
|
used++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* At this point, we have the entire list of filesystems, so sort it by
|
|
|
|
* mountpoint.
|
|
|
|
*/
|
|
|
|
qsort(mountpoints, used, sizeof (char *), mountpoint_compare);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Walk through and first unshare everything.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < used; i++) {
|
|
|
|
zfs_share_proto_t *curr_proto;
|
|
|
|
for (curr_proto = share_all_proto; *curr_proto != PROTO_END;
|
|
|
|
curr_proto++) {
|
|
|
|
if (is_shared(hdl, mountpoints[i], *curr_proto) &&
|
|
|
|
unshare_one(hdl, mountpoints[i],
|
|
|
|
mountpoints[i], *curr_proto) != 0)
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Now unmount everything, removing the underlying directories as
|
|
|
|
* appropriate.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < used; i++) {
|
|
|
|
if (unmount_one(hdl, mountpoints[i], flags) != 0)
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < used; i++) {
|
|
|
|
if (datasets[i])
|
|
|
|
remove_mountpoint(datasets[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
|
|
for (i = 0; i < used; i++) {
|
|
|
|
if (datasets[i])
|
|
|
|
zfs_close(datasets[i]);
|
|
|
|
free(mountpoints[i]);
|
|
|
|
}
|
|
|
|
free(datasets);
|
|
|
|
free(mountpoints);
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
2008-12-22 20:23:27 +00:00
|
|
|
|
|
|
|
#else /* HAVE_ZPL */
|
|
|
|
|
|
|
|
void
|
|
|
|
remove_mountpoint(zfs_handle_t *zhp) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
is_mounted(libzfs_handle_t *zfs_hdl, const char *special, char **where)
|
|
|
|
{
|
|
|
|
return B_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
zfs_is_mounted(zfs_handle_t *zhp, char **where)
|
|
|
|
{
|
|
|
|
return is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where);
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
zfs_is_shared(zfs_handle_t *zhp)
|
|
|
|
{
|
|
|
|
return B_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
|
|
|
|
{
|
2009-01-14 18:37:35 +00:00
|
|
|
return B_FALSE;
|
2008-12-22 20:23:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force)
|
|
|
|
{
|
2009-01-14 18:37:35 +00:00
|
|
|
return B_FALSE;
|
2008-12-22 20:23:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* HAVE_ZPL */
|