1970 lines
47 KiB
C
1970 lines
47 KiB
C
/*
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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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013, Joyent, Inc. All rights reserved.
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* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
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* Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
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*/
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/*
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* Internal utility routines for the ZFS library.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <libintl.h>
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#include <stdarg.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 <ctype.h>
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#include <math.h>
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#include <sys/stat.h>
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#include <sys/mnttab.h>
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#include <sys/mntent.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <libzfs.h>
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#include <libzfs_core.h>
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#include "libzfs_impl.h"
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#include "zfs_prop.h"
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#include "zfeature_common.h"
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#include <zfs_fletcher.h>
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int
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libzfs_errno(libzfs_handle_t *hdl)
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{
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return (hdl->libzfs_error);
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}
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const char *
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libzfs_error_init(int error)
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{
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switch (error) {
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case ENXIO:
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return (dgettext(TEXT_DOMAIN, "The ZFS modules are not "
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"loaded.\nTry running '/sbin/modprobe zfs' as root "
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"to load them.\n"));
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case ENOENT:
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return (dgettext(TEXT_DOMAIN, "/dev/zfs and /proc/self/mounts "
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"are required.\nTry running 'udevadm trigger' and 'mount "
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"-t proc proc /proc' as root.\n"));
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case ENOEXEC:
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return (dgettext(TEXT_DOMAIN, "The ZFS modules cannot be "
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"auto-loaded.\nTry running '/sbin/modprobe zfs' as "
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"root to manually load them.\n"));
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case EACCES:
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return (dgettext(TEXT_DOMAIN, "Permission denied the "
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"ZFS utilities must be run as root.\n"));
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default:
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return (dgettext(TEXT_DOMAIN, "Failed to initialize the "
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"libzfs library.\n"));
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}
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}
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const char *
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libzfs_error_action(libzfs_handle_t *hdl)
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{
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return (hdl->libzfs_action);
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}
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const char *
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libzfs_error_description(libzfs_handle_t *hdl)
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{
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if (hdl->libzfs_desc[0] != '\0')
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return (hdl->libzfs_desc);
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switch (hdl->libzfs_error) {
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case EZFS_NOMEM:
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return (dgettext(TEXT_DOMAIN, "out of memory"));
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case EZFS_BADPROP:
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return (dgettext(TEXT_DOMAIN, "invalid property value"));
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case EZFS_PROPREADONLY:
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return (dgettext(TEXT_DOMAIN, "read-only property"));
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case EZFS_PROPTYPE:
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return (dgettext(TEXT_DOMAIN, "property doesn't apply to "
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"datasets of this type"));
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case EZFS_PROPNONINHERIT:
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return (dgettext(TEXT_DOMAIN, "property cannot be inherited"));
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case EZFS_PROPSPACE:
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return (dgettext(TEXT_DOMAIN, "invalid quota or reservation"));
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case EZFS_BADTYPE:
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return (dgettext(TEXT_DOMAIN, "operation not applicable to "
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"datasets of this type"));
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case EZFS_BUSY:
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return (dgettext(TEXT_DOMAIN, "pool or dataset is busy"));
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case EZFS_EXISTS:
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return (dgettext(TEXT_DOMAIN, "pool or dataset exists"));
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case EZFS_NOENT:
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return (dgettext(TEXT_DOMAIN, "no such pool or dataset"));
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case EZFS_BADSTREAM:
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return (dgettext(TEXT_DOMAIN, "invalid backup stream"));
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case EZFS_DSREADONLY:
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return (dgettext(TEXT_DOMAIN, "dataset is read-only"));
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case EZFS_VOLTOOBIG:
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return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for "
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"this system"));
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case EZFS_INVALIDNAME:
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return (dgettext(TEXT_DOMAIN, "invalid name"));
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case EZFS_BADRESTORE:
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return (dgettext(TEXT_DOMAIN, "unable to restore to "
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"destination"));
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case EZFS_BADBACKUP:
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return (dgettext(TEXT_DOMAIN, "backup failed"));
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case EZFS_BADTARGET:
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return (dgettext(TEXT_DOMAIN, "invalid target vdev"));
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case EZFS_NODEVICE:
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return (dgettext(TEXT_DOMAIN, "no such device in pool"));
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case EZFS_BADDEV:
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return (dgettext(TEXT_DOMAIN, "invalid device"));
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case EZFS_NOREPLICAS:
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return (dgettext(TEXT_DOMAIN, "no valid replicas"));
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case EZFS_RESILVERING:
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return (dgettext(TEXT_DOMAIN, "currently resilvering"));
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case EZFS_BADVERSION:
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return (dgettext(TEXT_DOMAIN, "unsupported version or "
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"feature"));
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case EZFS_POOLUNAVAIL:
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return (dgettext(TEXT_DOMAIN, "pool is unavailable"));
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case EZFS_DEVOVERFLOW:
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return (dgettext(TEXT_DOMAIN, "too many devices in one vdev"));
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case EZFS_BADPATH:
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return (dgettext(TEXT_DOMAIN, "must be an absolute path"));
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case EZFS_CROSSTARGET:
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return (dgettext(TEXT_DOMAIN, "operation crosses datasets or "
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"pools"));
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case EZFS_ZONED:
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return (dgettext(TEXT_DOMAIN, "dataset in use by local zone"));
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case EZFS_MOUNTFAILED:
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return (dgettext(TEXT_DOMAIN, "mount failed"));
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case EZFS_UMOUNTFAILED:
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return (dgettext(TEXT_DOMAIN, "umount failed"));
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case EZFS_UNSHARENFSFAILED:
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return (dgettext(TEXT_DOMAIN, "unshare(1M) failed"));
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case EZFS_SHARENFSFAILED:
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return (dgettext(TEXT_DOMAIN, "share(1M) failed"));
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case EZFS_UNSHARESMBFAILED:
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return (dgettext(TEXT_DOMAIN, "smb remove share failed"));
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case EZFS_SHARESMBFAILED:
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return (dgettext(TEXT_DOMAIN, "smb add share failed"));
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case EZFS_PERM:
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return (dgettext(TEXT_DOMAIN, "permission denied"));
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case EZFS_NOSPC:
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return (dgettext(TEXT_DOMAIN, "out of space"));
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case EZFS_FAULT:
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return (dgettext(TEXT_DOMAIN, "bad address"));
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case EZFS_IO:
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return (dgettext(TEXT_DOMAIN, "I/O error"));
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case EZFS_INTR:
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return (dgettext(TEXT_DOMAIN, "signal received"));
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case EZFS_ISSPARE:
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return (dgettext(TEXT_DOMAIN, "device is reserved as a hot "
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"spare"));
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case EZFS_INVALCONFIG:
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return (dgettext(TEXT_DOMAIN, "invalid vdev configuration"));
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case EZFS_RECURSIVE:
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return (dgettext(TEXT_DOMAIN, "recursive dataset dependency"));
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case EZFS_NOHISTORY:
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return (dgettext(TEXT_DOMAIN, "no history available"));
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case EZFS_POOLPROPS:
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return (dgettext(TEXT_DOMAIN, "failed to retrieve "
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"pool properties"));
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case EZFS_POOL_NOTSUP:
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return (dgettext(TEXT_DOMAIN, "operation not supported "
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"on this type of pool"));
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case EZFS_POOL_INVALARG:
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return (dgettext(TEXT_DOMAIN, "invalid argument for "
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"this pool operation"));
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case EZFS_NAMETOOLONG:
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return (dgettext(TEXT_DOMAIN, "dataset name is too long"));
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case EZFS_OPENFAILED:
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return (dgettext(TEXT_DOMAIN, "open failed"));
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case EZFS_NOCAP:
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return (dgettext(TEXT_DOMAIN,
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"disk capacity information could not be retrieved"));
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case EZFS_LABELFAILED:
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return (dgettext(TEXT_DOMAIN, "write of label failed"));
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case EZFS_BADWHO:
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return (dgettext(TEXT_DOMAIN, "invalid user/group"));
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case EZFS_BADPERM:
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return (dgettext(TEXT_DOMAIN, "invalid permission"));
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case EZFS_BADPERMSET:
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return (dgettext(TEXT_DOMAIN, "invalid permission set name"));
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case EZFS_NODELEGATION:
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return (dgettext(TEXT_DOMAIN, "delegated administration is "
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"disabled on pool"));
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case EZFS_BADCACHE:
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return (dgettext(TEXT_DOMAIN, "invalid or missing cache file"));
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case EZFS_ISL2CACHE:
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return (dgettext(TEXT_DOMAIN, "device is in use as a cache"));
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case EZFS_VDEVNOTSUP:
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return (dgettext(TEXT_DOMAIN, "vdev specification is not "
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"supported"));
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case EZFS_NOTSUP:
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return (dgettext(TEXT_DOMAIN, "operation not supported "
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"on this dataset"));
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case EZFS_ACTIVE_SPARE:
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return (dgettext(TEXT_DOMAIN, "pool has active shared spare "
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"device"));
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case EZFS_UNPLAYED_LOGS:
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return (dgettext(TEXT_DOMAIN, "log device has unplayed intent "
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"logs"));
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case EZFS_REFTAG_RELE:
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return (dgettext(TEXT_DOMAIN, "no such tag on this dataset"));
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case EZFS_REFTAG_HOLD:
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return (dgettext(TEXT_DOMAIN, "tag already exists on this "
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"dataset"));
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case EZFS_TAGTOOLONG:
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return (dgettext(TEXT_DOMAIN, "tag too long"));
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case EZFS_PIPEFAILED:
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return (dgettext(TEXT_DOMAIN, "pipe create failed"));
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case EZFS_THREADCREATEFAILED:
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return (dgettext(TEXT_DOMAIN, "thread create failed"));
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case EZFS_POSTSPLIT_ONLINE:
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return (dgettext(TEXT_DOMAIN, "disk was split from this pool "
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"into a new one"));
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case EZFS_SCRUBBING:
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return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
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"use 'zpool scrub -s' to cancel current scrub"));
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case EZFS_NO_SCRUB:
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return (dgettext(TEXT_DOMAIN, "there is no active scrub"));
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case EZFS_DIFF:
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return (dgettext(TEXT_DOMAIN, "unable to generate diffs"));
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case EZFS_DIFFDATA:
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return (dgettext(TEXT_DOMAIN, "invalid diff data"));
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case EZFS_POOLREADONLY:
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return (dgettext(TEXT_DOMAIN, "pool is read-only"));
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case EZFS_UNKNOWN:
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return (dgettext(TEXT_DOMAIN, "unknown error"));
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default:
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assert(hdl->libzfs_error == 0);
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return (dgettext(TEXT_DOMAIN, "no error"));
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}
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}
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/*PRINTFLIKE2*/
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void
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zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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(void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc),
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fmt, ap);
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hdl->libzfs_desc_active = 1;
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va_end(ap);
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}
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static void
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zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap)
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{
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(void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action),
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fmt, ap);
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hdl->libzfs_error = error;
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if (hdl->libzfs_desc_active)
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hdl->libzfs_desc_active = 0;
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else
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hdl->libzfs_desc[0] = '\0';
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if (hdl->libzfs_printerr) {
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if (error == EZFS_UNKNOWN) {
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(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal "
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"error: %s\n"), libzfs_error_description(hdl));
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abort();
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}
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(void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action,
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libzfs_error_description(hdl));
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if (error == EZFS_NOMEM)
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exit(1);
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}
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}
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int
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zfs_error(libzfs_handle_t *hdl, int error, const char *msg)
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{
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return (zfs_error_fmt(hdl, error, "%s", msg));
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}
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/*PRINTFLIKE3*/
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int
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zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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zfs_verror(hdl, error, fmt, ap);
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va_end(ap);
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return (-1);
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}
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static int
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zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt,
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va_list ap)
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{
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switch (error) {
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case EPERM:
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case EACCES:
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zfs_verror(hdl, EZFS_PERM, fmt, ap);
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return (-1);
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case ECANCELED:
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zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap);
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return (-1);
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case EIO:
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zfs_verror(hdl, EZFS_IO, fmt, ap);
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return (-1);
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case EFAULT:
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zfs_verror(hdl, EZFS_FAULT, fmt, ap);
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return (-1);
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case EINTR:
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zfs_verror(hdl, EZFS_INTR, fmt, ap);
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return (-1);
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}
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return (0);
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}
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int
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zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
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{
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return (zfs_standard_error_fmt(hdl, error, "%s", msg));
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}
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/*PRINTFLIKE3*/
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int
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zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (zfs_common_error(hdl, error, fmt, ap) != 0) {
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va_end(ap);
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return (-1);
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}
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switch (error) {
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case ENXIO:
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case ENODEV:
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case EPIPE:
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zfs_verror(hdl, EZFS_IO, fmt, ap);
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break;
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case ENOENT:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"dataset does not exist"));
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zfs_verror(hdl, EZFS_NOENT, fmt, ap);
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break;
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case ENOSPC:
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case EDQUOT:
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zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
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break;
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case EEXIST:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"dataset already exists"));
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zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
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break;
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case EBUSY:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"dataset is busy"));
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zfs_verror(hdl, EZFS_BUSY, fmt, ap);
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break;
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case EROFS:
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zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
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break;
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case ENAMETOOLONG:
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zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap);
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break;
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case ENOTSUP:
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zfs_verror(hdl, EZFS_BADVERSION, fmt, ap);
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break;
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case EAGAIN:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"pool I/O is currently suspended"));
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zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
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break;
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default:
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zfs_error_aux(hdl, strerror(error));
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zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
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break;
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}
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va_end(ap);
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return (-1);
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}
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int
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zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
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{
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return (zpool_standard_error_fmt(hdl, error, "%s", msg));
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}
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/*PRINTFLIKE3*/
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int
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zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (zfs_common_error(hdl, error, fmt, ap) != 0) {
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va_end(ap);
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return (-1);
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}
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switch (error) {
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case ENODEV:
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zfs_verror(hdl, EZFS_NODEVICE, fmt, ap);
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break;
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case ENOENT:
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zfs_error_aux(hdl,
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dgettext(TEXT_DOMAIN, "no such pool or dataset"));
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zfs_verror(hdl, EZFS_NOENT, fmt, ap);
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break;
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case EEXIST:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"pool already exists"));
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zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
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break;
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case EBUSY:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy"));
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zfs_verror(hdl, EZFS_BUSY, fmt, ap);
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break;
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case ENXIO:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"one or more devices is currently unavailable"));
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zfs_verror(hdl, EZFS_BADDEV, fmt, ap);
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break;
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|
|
case ENAMETOOLONG:
|
|
zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap);
|
|
break;
|
|
|
|
case ENOTSUP:
|
|
zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap);
|
|
break;
|
|
|
|
case EINVAL:
|
|
zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap);
|
|
break;
|
|
|
|
case ENOSPC:
|
|
case EDQUOT:
|
|
zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
|
|
return (-1);
|
|
|
|
case EAGAIN:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"pool I/O is currently suspended"));
|
|
zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
|
|
break;
|
|
|
|
case EROFS:
|
|
zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
|
|
break;
|
|
case EDOM:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"block size out of range or does not match"));
|
|
zfs_verror(hdl, EZFS_BADPROP, fmt, ap);
|
|
break;
|
|
|
|
default:
|
|
zfs_error_aux(hdl, strerror(error));
|
|
zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
|
|
}
|
|
|
|
va_end(ap);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Display an out of memory error message and abort the current program.
|
|
*/
|
|
int
|
|
no_memory(libzfs_handle_t *hdl)
|
|
{
|
|
return (zfs_error(hdl, EZFS_NOMEM, "internal error"));
|
|
}
|
|
|
|
/*
|
|
* A safe form of malloc() which will die if the allocation fails.
|
|
*/
|
|
void *
|
|
zfs_alloc(libzfs_handle_t *hdl, size_t size)
|
|
{
|
|
void *data;
|
|
|
|
if ((data = calloc(1, size)) == NULL)
|
|
(void) no_memory(hdl);
|
|
|
|
return (data);
|
|
}
|
|
|
|
/*
|
|
* A safe form of asprintf() which will die if the allocation fails.
|
|
*/
|
|
/*PRINTFLIKE2*/
|
|
char *
|
|
zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
char *ret;
|
|
int err;
|
|
|
|
va_start(ap, fmt);
|
|
|
|
err = vasprintf(&ret, fmt, ap);
|
|
|
|
va_end(ap);
|
|
|
|
if (err < 0)
|
|
(void) no_memory(hdl);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* A safe form of realloc(), which also zeroes newly allocated space.
|
|
*/
|
|
void *
|
|
zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize)
|
|
{
|
|
void *ret;
|
|
|
|
if ((ret = realloc(ptr, newsize)) == NULL) {
|
|
(void) no_memory(hdl);
|
|
return (NULL);
|
|
}
|
|
|
|
bzero((char *)ret + oldsize, (newsize - oldsize));
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* A safe form of strdup() which will die if the allocation fails.
|
|
*/
|
|
char *
|
|
zfs_strdup(libzfs_handle_t *hdl, const char *str)
|
|
{
|
|
char *ret;
|
|
|
|
if ((ret = strdup(str)) == NULL)
|
|
(void) no_memory(hdl);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Convert a number to an appropriately human-readable output.
|
|
*/
|
|
void
|
|
zfs_nicenum_format(uint64_t num, char *buf, size_t buflen,
|
|
enum zfs_nicenum_format format)
|
|
{
|
|
uint64_t n = num;
|
|
int index = 0;
|
|
const char *u;
|
|
const char *units[3][7] = {
|
|
[ZFS_NICENUM_1024] = {"", "K", "M", "G", "T", "P", "E"},
|
|
[ZFS_NICENUM_TIME] = {"ns", "us", "ms", "s", "?", "?", "?"}
|
|
};
|
|
|
|
const int units_len[] = {[ZFS_NICENUM_1024] = 6,
|
|
[ZFS_NICENUM_TIME] = 4};
|
|
|
|
const int k_unit[] = { [ZFS_NICENUM_1024] = 1024,
|
|
[ZFS_NICENUM_TIME] = 1000};
|
|
|
|
double val;
|
|
|
|
if (format == ZFS_NICENUM_RAW) {
|
|
snprintf(buf, buflen, "%llu", (u_longlong_t)num);
|
|
return;
|
|
}
|
|
|
|
|
|
while (n >= k_unit[format] && index < units_len[format]) {
|
|
n /= k_unit[format];
|
|
index++;
|
|
}
|
|
|
|
u = units[format][index];
|
|
|
|
/* Don't print 0ns times */
|
|
if ((format == ZFS_NICENUM_TIME) && (num == 0)) {
|
|
(void) snprintf(buf, buflen, "-");
|
|
} else if ((index == 0) || ((num %
|
|
(uint64_t)powl(k_unit[format], index)) == 0)) {
|
|
/*
|
|
* If this is an even multiple of the base, always display
|
|
* without any decimal precision.
|
|
*/
|
|
(void) snprintf(buf, buflen, "%llu%s", (u_longlong_t)n, u);
|
|
|
|
} else {
|
|
/*
|
|
* We want to choose a precision that reflects the best choice
|
|
* for fitting in 5 characters. This can get rather tricky when
|
|
* we have numbers that are very close to an order of magnitude.
|
|
* For example, when displaying 10239 (which is really 9.999K),
|
|
* we want only a single place of precision for 10.0K. We could
|
|
* develop some complex heuristics for this, but it's much
|
|
* easier just to try each combination in turn.
|
|
*/
|
|
int i;
|
|
for (i = 2; i >= 0; i--) {
|
|
val = (double)num /
|
|
(uint64_t)powl(k_unit[format], index);
|
|
|
|
/*
|
|
* Don't print floating point values for time. Note,
|
|
* we use floor() instead of round() here, since
|
|
* round can result in undesirable results. For
|
|
* example, if "num" is in the range of
|
|
* 999500-999999, it will print out "1000us". This
|
|
* doesn't happen if we use floor().
|
|
*/
|
|
if (format == ZFS_NICENUM_TIME) {
|
|
if (snprintf(buf, buflen, "%d%s",
|
|
(unsigned int) floor(val), u) <= 5)
|
|
break;
|
|
|
|
} else {
|
|
if (snprintf(buf, buflen, "%.*f%s", i,
|
|
val, u) <= 5)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Convert a number to an appropriately human-readable output.
|
|
*/
|
|
void
|
|
zfs_nicenum(uint64_t num, char *buf, size_t buflen)
|
|
{
|
|
zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_1024);
|
|
}
|
|
|
|
/*
|
|
* Convert a time to an appropriately human-readable output.
|
|
* @num: Time in nanoseconds
|
|
*/
|
|
void
|
|
zfs_nicetime(uint64_t num, char *buf, size_t buflen)
|
|
{
|
|
zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_TIME);
|
|
}
|
|
|
|
/*
|
|
* Print out a raw number with correct column spacing
|
|
*/
|
|
void
|
|
zfs_niceraw(uint64_t num, char *buf, size_t buflen)
|
|
{
|
|
zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_RAW);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
|
|
{
|
|
hdl->libzfs_printerr = printerr;
|
|
}
|
|
|
|
static int
|
|
libzfs_module_loaded(const char *module)
|
|
{
|
|
const char path_prefix[] = "/sys/module/";
|
|
char path[256];
|
|
|
|
memcpy(path, path_prefix, sizeof (path_prefix) - 1);
|
|
strcpy(path + sizeof (path_prefix) - 1, module);
|
|
|
|
return (access(path, F_OK) == 0);
|
|
}
|
|
|
|
int
|
|
libzfs_run_process(const char *path, char *argv[], int flags)
|
|
{
|
|
pid_t pid;
|
|
int error, devnull_fd;
|
|
|
|
pid = vfork();
|
|
if (pid == 0) {
|
|
devnull_fd = open("/dev/null", O_WRONLY);
|
|
|
|
if (devnull_fd < 0)
|
|
_exit(-1);
|
|
|
|
if (!(flags & STDOUT_VERBOSE))
|
|
(void) dup2(devnull_fd, STDOUT_FILENO);
|
|
|
|
if (!(flags & STDERR_VERBOSE))
|
|
(void) dup2(devnull_fd, STDERR_FILENO);
|
|
|
|
close(devnull_fd);
|
|
|
|
(void) execvp(path, argv);
|
|
_exit(-1);
|
|
} else if (pid > 0) {
|
|
int status;
|
|
|
|
while ((error = waitpid(pid, &status, 0)) == -1 &&
|
|
errno == EINTR) { }
|
|
if (error < 0 || !WIFEXITED(status))
|
|
return (-1);
|
|
|
|
return (WEXITSTATUS(status));
|
|
}
|
|
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Verify the required ZFS_DEV device is available and optionally attempt
|
|
* to load the ZFS modules. Under normal circumstances the modules
|
|
* should already have been loaded by some external mechanism.
|
|
*
|
|
* Environment variables:
|
|
* - ZFS_MODULE_LOADING="YES|yes|ON|on" - Attempt to load modules.
|
|
* - ZFS_MODULE_TIMEOUT="<seconds>" - Seconds to wait for ZFS_DEV
|
|
*/
|
|
static int
|
|
libzfs_load_module(const char *module)
|
|
{
|
|
char *argv[4] = {"/sbin/modprobe", "-q", (char *)module, (char *)0};
|
|
char *load_str, *timeout_str;
|
|
long timeout = 10; /* seconds */
|
|
long busy_timeout = 10; /* milliseconds */
|
|
int load = 0, fd;
|
|
hrtime_t start;
|
|
|
|
/* Optionally request module loading */
|
|
if (!libzfs_module_loaded(module)) {
|
|
load_str = getenv("ZFS_MODULE_LOADING");
|
|
if (load_str) {
|
|
if (!strncasecmp(load_str, "YES", strlen("YES")) ||
|
|
!strncasecmp(load_str, "ON", strlen("ON")))
|
|
load = 1;
|
|
else
|
|
load = 0;
|
|
}
|
|
|
|
if (load && libzfs_run_process("/sbin/modprobe", argv, 0))
|
|
return (ENOEXEC);
|
|
}
|
|
|
|
/* Module loading is synchronous it must be available */
|
|
if (!libzfs_module_loaded(module))
|
|
return (ENXIO);
|
|
|
|
/*
|
|
* Device creation by udev is asynchronous and waiting may be
|
|
* required. Busy wait for 10ms and then fall back to polling every
|
|
* 10ms for the allowed timeout (default 10s, max 10m). This is
|
|
* done to optimize for the common case where the device is
|
|
* immediately available and to avoid penalizing the possible
|
|
* case where udev is slow or unable to create the device.
|
|
*/
|
|
timeout_str = getenv("ZFS_MODULE_TIMEOUT");
|
|
if (timeout_str) {
|
|
timeout = strtol(timeout_str, NULL, 0);
|
|
timeout = MAX(MIN(timeout, (10 * 60)), 0); /* 0 <= N <= 600 */
|
|
}
|
|
|
|
start = gethrtime();
|
|
do {
|
|
fd = open(ZFS_DEV, O_RDWR);
|
|
if (fd >= 0) {
|
|
(void) close(fd);
|
|
return (0);
|
|
} else if (errno != ENOENT) {
|
|
return (errno);
|
|
} else if (NSEC2MSEC(gethrtime() - start) < busy_timeout) {
|
|
sched_yield();
|
|
} else {
|
|
usleep(10 * MILLISEC);
|
|
}
|
|
} while (NSEC2MSEC(gethrtime() - start) < (timeout * MILLISEC));
|
|
|
|
return (ENOENT);
|
|
}
|
|
|
|
libzfs_handle_t *
|
|
libzfs_init(void)
|
|
{
|
|
libzfs_handle_t *hdl;
|
|
int error;
|
|
|
|
error = libzfs_load_module(ZFS_DRIVER);
|
|
if (error) {
|
|
errno = error;
|
|
return (NULL);
|
|
}
|
|
|
|
if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) {
|
|
return (NULL);
|
|
}
|
|
|
|
if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
|
|
free(hdl);
|
|
return (NULL);
|
|
}
|
|
|
|
#ifdef HAVE_SETMNTENT
|
|
if ((hdl->libzfs_mnttab = setmntent(MNTTAB, "r")) == NULL) {
|
|
#else
|
|
if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
|
|
#endif
|
|
(void) close(hdl->libzfs_fd);
|
|
free(hdl);
|
|
return (NULL);
|
|
}
|
|
|
|
hdl->libzfs_sharetab = fopen(ZFS_SHARETAB, "r");
|
|
|
|
if (libzfs_core_init() != 0) {
|
|
(void) close(hdl->libzfs_fd);
|
|
(void) fclose(hdl->libzfs_mnttab);
|
|
if (hdl->libzfs_sharetab)
|
|
(void) fclose(hdl->libzfs_sharetab);
|
|
free(hdl);
|
|
return (NULL);
|
|
}
|
|
|
|
zfs_prop_init();
|
|
zpool_prop_init();
|
|
zpool_feature_init();
|
|
libzfs_mnttab_init(hdl);
|
|
fletcher_4_init();
|
|
|
|
return (hdl);
|
|
}
|
|
|
|
void
|
|
libzfs_fini(libzfs_handle_t *hdl)
|
|
{
|
|
(void) close(hdl->libzfs_fd);
|
|
if (hdl->libzfs_mnttab)
|
|
#ifdef HAVE_SETMNTENT
|
|
(void) endmntent(hdl->libzfs_mnttab);
|
|
#else
|
|
(void) fclose(hdl->libzfs_mnttab);
|
|
#endif
|
|
if (hdl->libzfs_sharetab)
|
|
(void) fclose(hdl->libzfs_sharetab);
|
|
zfs_uninit_libshare(hdl);
|
|
zpool_free_handles(hdl);
|
|
libzfs_fru_clear(hdl, B_TRUE);
|
|
namespace_clear(hdl);
|
|
libzfs_mnttab_fini(hdl);
|
|
libzfs_core_fini();
|
|
fletcher_4_fini();
|
|
free(hdl);
|
|
}
|
|
|
|
libzfs_handle_t *
|
|
zpool_get_handle(zpool_handle_t *zhp)
|
|
{
|
|
return (zhp->zpool_hdl);
|
|
}
|
|
|
|
libzfs_handle_t *
|
|
zfs_get_handle(zfs_handle_t *zhp)
|
|
{
|
|
return (zhp->zfs_hdl);
|
|
}
|
|
|
|
zpool_handle_t *
|
|
zfs_get_pool_handle(const zfs_handle_t *zhp)
|
|
{
|
|
return (zhp->zpool_hdl);
|
|
}
|
|
|
|
/*
|
|
* Given a name, determine whether or not it's a valid path
|
|
* (starts with '/' or "./"). If so, walk the mnttab trying
|
|
* to match the device number. If not, treat the path as an
|
|
* fs/vol/snap/bkmark name.
|
|
*/
|
|
zfs_handle_t *
|
|
zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
|
|
{
|
|
struct stat64 statbuf;
|
|
struct extmnttab entry;
|
|
int ret;
|
|
|
|
if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) {
|
|
/*
|
|
* It's not a valid path, assume it's a name of type 'argtype'.
|
|
*/
|
|
return (zfs_open(hdl, path, argtype));
|
|
}
|
|
|
|
if (stat64(path, &statbuf) != 0) {
|
|
(void) fprintf(stderr, "%s: %s\n", path, strerror(errno));
|
|
return (NULL);
|
|
}
|
|
|
|
/* Reopen MNTTAB to prevent reading stale data from open file */
|
|
if (freopen(MNTTAB, "r", hdl->libzfs_mnttab) == NULL)
|
|
return (NULL);
|
|
|
|
while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) {
|
|
if (makedevice(entry.mnt_major, entry.mnt_minor) ==
|
|
statbuf.st_dev) {
|
|
break;
|
|
}
|
|
}
|
|
if (ret != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
|
|
(void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"),
|
|
path);
|
|
return (NULL);
|
|
}
|
|
|
|
return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM));
|
|
}
|
|
|
|
/*
|
|
* Append partition suffix to an otherwise fully qualified device path.
|
|
* This is used to generate the name the full path as its stored in
|
|
* ZPOOL_CONFIG_PATH for whole disk devices. On success the new length
|
|
* of 'path' will be returned on error a negative value is returned.
|
|
*/
|
|
int
|
|
zfs_append_partition(char *path, size_t max_len)
|
|
{
|
|
int len = strlen(path);
|
|
|
|
if ((strncmp(path, UDISK_ROOT, strlen(UDISK_ROOT)) == 0) ||
|
|
(strncmp(path, ZVOL_ROOT, strlen(ZVOL_ROOT)) == 0)) {
|
|
if (len + 6 >= max_len)
|
|
return (-1);
|
|
|
|
(void) strcat(path, "-part1");
|
|
len += 6;
|
|
} else {
|
|
if (len + 2 >= max_len)
|
|
return (-1);
|
|
|
|
if (isdigit(path[len-1])) {
|
|
(void) strcat(path, "p1");
|
|
len += 2;
|
|
} else {
|
|
(void) strcat(path, "1");
|
|
len += 1;
|
|
}
|
|
}
|
|
|
|
return (len);
|
|
}
|
|
|
|
/*
|
|
* Given a shorthand device name check if a file by that name exists in any
|
|
* of the 'zpool_default_import_path' or ZPOOL_IMPORT_PATH directories. If
|
|
* one is found, store its fully qualified path in the 'path' buffer passed
|
|
* by the caller and return 0, otherwise return an error.
|
|
*/
|
|
int
|
|
zfs_resolve_shortname(const char *name, char *path, size_t len)
|
|
{
|
|
int i, error = -1;
|
|
char *dir, *env, *envdup;
|
|
|
|
env = getenv("ZPOOL_IMPORT_PATH");
|
|
errno = ENOENT;
|
|
|
|
if (env) {
|
|
envdup = strdup(env);
|
|
dir = strtok(envdup, ":");
|
|
while (dir && error) {
|
|
(void) snprintf(path, len, "%s/%s", dir, name);
|
|
error = access(path, F_OK);
|
|
dir = strtok(NULL, ":");
|
|
}
|
|
free(envdup);
|
|
} else {
|
|
for (i = 0; i < DEFAULT_IMPORT_PATH_SIZE && error < 0; i++) {
|
|
(void) snprintf(path, len, "%s/%s",
|
|
zpool_default_import_path[i], name);
|
|
error = access(path, F_OK);
|
|
}
|
|
}
|
|
|
|
return (error ? ENOENT : 0);
|
|
}
|
|
|
|
/*
|
|
* Given a shorthand device name look for a match against 'cmp_name'. This
|
|
* is done by checking all prefix expansions using either the default
|
|
* 'zpool_default_import_paths' or the ZPOOL_IMPORT_PATH environment
|
|
* variable. Proper partition suffixes will be appended if this is a
|
|
* whole disk. When a match is found 0 is returned otherwise ENOENT.
|
|
*/
|
|
static int
|
|
zfs_strcmp_shortname(char *name, char *cmp_name, int wholedisk)
|
|
{
|
|
int path_len, cmp_len, i = 0, error = ENOENT;
|
|
char *dir, *env, *envdup = NULL;
|
|
char path_name[MAXPATHLEN];
|
|
|
|
cmp_len = strlen(cmp_name);
|
|
env = getenv("ZPOOL_IMPORT_PATH");
|
|
|
|
if (env) {
|
|
envdup = strdup(env);
|
|
dir = strtok(envdup, ":");
|
|
} else {
|
|
dir = zpool_default_import_path[i];
|
|
}
|
|
|
|
while (dir) {
|
|
/* Trim trailing directory slashes from ZPOOL_IMPORT_PATH */
|
|
while (dir[strlen(dir)-1] == '/')
|
|
dir[strlen(dir)-1] = '\0';
|
|
|
|
path_len = snprintf(path_name, MAXPATHLEN, "%s/%s", dir, name);
|
|
if (wholedisk)
|
|
path_len = zfs_append_partition(path_name, MAXPATHLEN);
|
|
|
|
if ((path_len == cmp_len) && strcmp(path_name, cmp_name) == 0) {
|
|
error = 0;
|
|
break;
|
|
}
|
|
|
|
if (env) {
|
|
dir = strtok(NULL, ":");
|
|
} else if (++i < DEFAULT_IMPORT_PATH_SIZE) {
|
|
dir = zpool_default_import_path[i];
|
|
} else {
|
|
dir = NULL;
|
|
}
|
|
}
|
|
|
|
if (env)
|
|
free(envdup);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Given either a shorthand or fully qualified path name look for a match
|
|
* against 'cmp'. The passed name will be expanded as needed for comparison
|
|
* purposes and redundant slashes stripped to ensure an accurate match.
|
|
*/
|
|
int
|
|
zfs_strcmp_pathname(char *name, char *cmp, int wholedisk)
|
|
{
|
|
int path_len, cmp_len;
|
|
char path_name[MAXPATHLEN];
|
|
char cmp_name[MAXPATHLEN];
|
|
char *dir, *dup;
|
|
|
|
/* Strip redundant slashes if one exists due to ZPOOL_IMPORT_PATH */
|
|
memset(cmp_name, 0, MAXPATHLEN);
|
|
dup = strdup(cmp);
|
|
dir = strtok(dup, "/");
|
|
while (dir) {
|
|
strlcat(cmp_name, "/", sizeof (cmp_name));
|
|
strlcat(cmp_name, dir, sizeof (cmp_name));
|
|
dir = strtok(NULL, "/");
|
|
}
|
|
free(dup);
|
|
|
|
if (name[0] != '/')
|
|
return (zfs_strcmp_shortname(name, cmp_name, wholedisk));
|
|
|
|
(void) strlcpy(path_name, name, MAXPATHLEN);
|
|
path_len = strlen(path_name);
|
|
cmp_len = strlen(cmp_name);
|
|
|
|
if (wholedisk) {
|
|
path_len = zfs_append_partition(path_name, MAXPATHLEN);
|
|
if (path_len == -1)
|
|
return (ENOMEM);
|
|
}
|
|
|
|
if ((path_len != cmp_len) || strcmp(path_name, cmp_name))
|
|
return (ENOENT);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Given a full path to a device determine if that device appears in the
|
|
* import search path. If it does return the first match and store the
|
|
* index in the passed 'order' variable, otherwise return an error.
|
|
*/
|
|
int
|
|
zfs_path_order(char *name, int *order)
|
|
{
|
|
int i = 0, error = ENOENT;
|
|
char *dir, *env, *envdup;
|
|
|
|
env = getenv("ZPOOL_IMPORT_PATH");
|
|
if (env) {
|
|
envdup = strdup(env);
|
|
dir = strtok(envdup, ":");
|
|
while (dir) {
|
|
if (strncmp(name, dir, strlen(dir)) == 0) {
|
|
*order = i;
|
|
error = 0;
|
|
break;
|
|
}
|
|
dir = strtok(NULL, ":");
|
|
i++;
|
|
}
|
|
free(envdup);
|
|
} else {
|
|
for (i = 0; i < DEFAULT_IMPORT_PATH_SIZE; i++) {
|
|
if (strncmp(name, zpool_default_import_path[i],
|
|
strlen(zpool_default_import_path[i])) == 0) {
|
|
*order = i;
|
|
error = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
|
|
* an ioctl().
|
|
*/
|
|
int
|
|
zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
|
|
{
|
|
if (len == 0)
|
|
len = 16 * 1024;
|
|
zc->zc_nvlist_dst_size = len;
|
|
zc->zc_nvlist_dst =
|
|
(uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size);
|
|
if (zc->zc_nvlist_dst == 0)
|
|
return (-1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Called when an ioctl() which returns an nvlist fails with ENOMEM. This will
|
|
* expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was
|
|
* filled in by the kernel to indicate the actual required size.
|
|
*/
|
|
int
|
|
zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
|
|
{
|
|
free((void *)(uintptr_t)zc->zc_nvlist_dst);
|
|
zc->zc_nvlist_dst =
|
|
(uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size);
|
|
if (zc->zc_nvlist_dst == 0)
|
|
return (-1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Called to free the src and dst nvlists stored in the command structure.
|
|
*/
|
|
void
|
|
zcmd_free_nvlists(zfs_cmd_t *zc)
|
|
{
|
|
free((void *)(uintptr_t)zc->zc_nvlist_conf);
|
|
free((void *)(uintptr_t)zc->zc_nvlist_src);
|
|
free((void *)(uintptr_t)zc->zc_nvlist_dst);
|
|
zc->zc_nvlist_conf = 0;
|
|
zc->zc_nvlist_src = 0;
|
|
zc->zc_nvlist_dst = 0;
|
|
}
|
|
|
|
static int
|
|
zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen,
|
|
nvlist_t *nvl)
|
|
{
|
|
char *packed;
|
|
size_t len;
|
|
|
|
verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0);
|
|
|
|
if ((packed = zfs_alloc(hdl, len)) == NULL)
|
|
return (-1);
|
|
|
|
verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0);
|
|
|
|
*outnv = (uint64_t)(uintptr_t)packed;
|
|
*outlen = len;
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
|
|
{
|
|
return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf,
|
|
&zc->zc_nvlist_conf_size, nvl));
|
|
}
|
|
|
|
int
|
|
zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
|
|
{
|
|
return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src,
|
|
&zc->zc_nvlist_src_size, nvl));
|
|
}
|
|
|
|
/*
|
|
* Unpacks an nvlist from the ZFS ioctl command structure.
|
|
*/
|
|
int
|
|
zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp)
|
|
{
|
|
if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst,
|
|
zc->zc_nvlist_dst_size, nvlp, 0) != 0)
|
|
return (no_memory(hdl));
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc)
|
|
{
|
|
return (ioctl(hdl->libzfs_fd, request, zc));
|
|
}
|
|
|
|
/*
|
|
* ================================================================
|
|
* API shared by zfs and zpool property management
|
|
* ================================================================
|
|
*/
|
|
|
|
static void
|
|
zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
|
|
{
|
|
zprop_list_t *pl = cbp->cb_proplist;
|
|
int i;
|
|
char *title;
|
|
size_t len;
|
|
|
|
cbp->cb_first = B_FALSE;
|
|
if (cbp->cb_scripted)
|
|
return;
|
|
|
|
/*
|
|
* Start with the length of the column headers.
|
|
*/
|
|
cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME"));
|
|
cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN,
|
|
"PROPERTY"));
|
|
cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
|
|
"VALUE"));
|
|
cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN,
|
|
"RECEIVED"));
|
|
cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
|
|
"SOURCE"));
|
|
|
|
/* first property is always NAME */
|
|
assert(cbp->cb_proplist->pl_prop ==
|
|
((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ZFS_PROP_NAME));
|
|
|
|
/*
|
|
* Go through and calculate the widths for each column. For the
|
|
* 'source' column, we kludge it up by taking the worst-case scenario of
|
|
* inheriting from the longest name. This is acceptable because in the
|
|
* majority of cases 'SOURCE' is the last column displayed, and we don't
|
|
* use the width anyway. Note that the 'VALUE' column can be oversized,
|
|
* if the name of the property is much longer than any values we find.
|
|
*/
|
|
for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
|
|
/*
|
|
* 'PROPERTY' column
|
|
*/
|
|
if (pl->pl_prop != ZPROP_INVAL) {
|
|
const char *propname = (type == ZFS_TYPE_POOL) ?
|
|
zpool_prop_to_name(pl->pl_prop) :
|
|
zfs_prop_to_name(pl->pl_prop);
|
|
|
|
len = strlen(propname);
|
|
if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
|
|
cbp->cb_colwidths[GET_COL_PROPERTY] = len;
|
|
} else {
|
|
len = strlen(pl->pl_user_prop);
|
|
if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
|
|
cbp->cb_colwidths[GET_COL_PROPERTY] = len;
|
|
}
|
|
|
|
/*
|
|
* 'VALUE' column. The first property is always the 'name'
|
|
* property that was tacked on either by /sbin/zfs's
|
|
* zfs_do_get() or when calling zprop_expand_list(), so we
|
|
* ignore its width. If the user specified the name property
|
|
* to display, then it will be later in the list in any case.
|
|
*/
|
|
if (pl != cbp->cb_proplist &&
|
|
pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
|
|
cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
|
|
|
|
/* 'RECEIVED' column. */
|
|
if (pl != cbp->cb_proplist &&
|
|
pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD])
|
|
cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width;
|
|
|
|
/*
|
|
* 'NAME' and 'SOURCE' columns
|
|
*/
|
|
if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME :
|
|
ZFS_PROP_NAME) &&
|
|
pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) {
|
|
cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width;
|
|
cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width +
|
|
strlen(dgettext(TEXT_DOMAIN, "inherited from"));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now go through and print the headers.
|
|
*/
|
|
for (i = 0; i < ZFS_GET_NCOLS; i++) {
|
|
switch (cbp->cb_columns[i]) {
|
|
case GET_COL_NAME:
|
|
title = dgettext(TEXT_DOMAIN, "NAME");
|
|
break;
|
|
case GET_COL_PROPERTY:
|
|
title = dgettext(TEXT_DOMAIN, "PROPERTY");
|
|
break;
|
|
case GET_COL_VALUE:
|
|
title = dgettext(TEXT_DOMAIN, "VALUE");
|
|
break;
|
|
case GET_COL_RECVD:
|
|
title = dgettext(TEXT_DOMAIN, "RECEIVED");
|
|
break;
|
|
case GET_COL_SOURCE:
|
|
title = dgettext(TEXT_DOMAIN, "SOURCE");
|
|
break;
|
|
default:
|
|
title = NULL;
|
|
}
|
|
|
|
if (title != NULL) {
|
|
if (i == (ZFS_GET_NCOLS - 1) ||
|
|
cbp->cb_columns[i + 1] == GET_COL_NONE)
|
|
(void) printf("%s", title);
|
|
else
|
|
(void) printf("%-*s ",
|
|
cbp->cb_colwidths[cbp->cb_columns[i]],
|
|
title);
|
|
}
|
|
}
|
|
(void) printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Display a single line of output, according to the settings in the callback
|
|
* structure.
|
|
*/
|
|
void
|
|
zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
|
|
const char *propname, const char *value, zprop_source_t sourcetype,
|
|
const char *source, const char *recvd_value)
|
|
{
|
|
int i;
|
|
const char *str = NULL;
|
|
char buf[128];
|
|
|
|
/*
|
|
* Ignore those source types that the user has chosen to ignore.
|
|
*/
|
|
if ((sourcetype & cbp->cb_sources) == 0)
|
|
return;
|
|
|
|
if (cbp->cb_first)
|
|
zprop_print_headers(cbp, cbp->cb_type);
|
|
|
|
for (i = 0; i < ZFS_GET_NCOLS; i++) {
|
|
switch (cbp->cb_columns[i]) {
|
|
case GET_COL_NAME:
|
|
str = name;
|
|
break;
|
|
|
|
case GET_COL_PROPERTY:
|
|
str = propname;
|
|
break;
|
|
|
|
case GET_COL_VALUE:
|
|
str = value;
|
|
break;
|
|
|
|
case GET_COL_SOURCE:
|
|
switch (sourcetype) {
|
|
case ZPROP_SRC_NONE:
|
|
str = "-";
|
|
break;
|
|
|
|
case ZPROP_SRC_DEFAULT:
|
|
str = "default";
|
|
break;
|
|
|
|
case ZPROP_SRC_LOCAL:
|
|
str = "local";
|
|
break;
|
|
|
|
case ZPROP_SRC_TEMPORARY:
|
|
str = "temporary";
|
|
break;
|
|
|
|
case ZPROP_SRC_INHERITED:
|
|
(void) snprintf(buf, sizeof (buf),
|
|
"inherited from %s", source);
|
|
str = buf;
|
|
break;
|
|
case ZPROP_SRC_RECEIVED:
|
|
str = "received";
|
|
break;
|
|
|
|
default:
|
|
str = NULL;
|
|
assert(!"unhandled zprop_source_t");
|
|
}
|
|
break;
|
|
|
|
case GET_COL_RECVD:
|
|
str = (recvd_value == NULL ? "-" : recvd_value);
|
|
break;
|
|
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
if (i == (ZFS_GET_NCOLS - 1) ||
|
|
cbp->cb_columns[i + 1] == GET_COL_NONE)
|
|
(void) printf("%s", str);
|
|
else if (cbp->cb_scripted)
|
|
(void) printf("%s\t", str);
|
|
else
|
|
(void) printf("%-*s ",
|
|
cbp->cb_colwidths[cbp->cb_columns[i]],
|
|
str);
|
|
}
|
|
|
|
(void) printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Given a numeric suffix, convert the value into a number of bits that the
|
|
* resulting value must be shifted.
|
|
*/
|
|
static int
|
|
str2shift(libzfs_handle_t *hdl, const char *buf)
|
|
{
|
|
const char *ends = "BKMGTPEZ";
|
|
int i;
|
|
|
|
if (buf[0] == '\0')
|
|
return (0);
|
|
for (i = 0; i < strlen(ends); i++) {
|
|
if (toupper(buf[0]) == ends[i])
|
|
break;
|
|
}
|
|
if (i == strlen(ends)) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid numeric suffix '%s'"), buf);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Allow 'G' = 'GB' = 'GiB', case-insensitively.
|
|
* However, 'BB' and 'BiB' are disallowed.
|
|
*/
|
|
if (buf[1] == '\0' ||
|
|
(toupper(buf[0]) != 'B' &&
|
|
((toupper(buf[1]) == 'B' && buf[2] == '\0') ||
|
|
(toupper(buf[1]) == 'I' && toupper(buf[2]) == 'B' &&
|
|
buf[3] == '\0'))))
|
|
return (10 * i);
|
|
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid numeric suffix '%s'"), buf);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Convert a string of the form '100G' into a real number. Used when setting
|
|
* properties or creating a volume. 'buf' is used to place an extended error
|
|
* message for the caller to use.
|
|
*/
|
|
int
|
|
zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
|
|
{
|
|
char *end;
|
|
int shift;
|
|
|
|
*num = 0;
|
|
|
|
/* Check to see if this looks like a number. */
|
|
if ((value[0] < '0' || value[0] > '9') && value[0] != '.') {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"bad numeric value '%s'"), value);
|
|
return (-1);
|
|
}
|
|
|
|
/* Rely on strtoull() to process the numeric portion. */
|
|
errno = 0;
|
|
*num = strtoull(value, &end, 10);
|
|
|
|
/*
|
|
* Check for ERANGE, which indicates that the value is too large to fit
|
|
* in a 64-bit value.
|
|
*/
|
|
if (errno == ERANGE) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"numeric value is too large"));
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* If we have a decimal value, then do the computation with floating
|
|
* point arithmetic. Otherwise, use standard arithmetic.
|
|
*/
|
|
if (*end == '.') {
|
|
double fval = strtod(value, &end);
|
|
|
|
if ((shift = str2shift(hdl, end)) == -1)
|
|
return (-1);
|
|
|
|
fval *= pow(2, shift);
|
|
|
|
if (fval > UINT64_MAX) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"numeric value is too large"));
|
|
return (-1);
|
|
}
|
|
|
|
*num = (uint64_t)fval;
|
|
} else {
|
|
if ((shift = str2shift(hdl, end)) == -1)
|
|
return (-1);
|
|
|
|
/* Check for overflow */
|
|
if (shift >= 64 || (*num << shift) >> shift != *num) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"numeric value is too large"));
|
|
return (-1);
|
|
}
|
|
|
|
*num <<= shift;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Given a propname=value nvpair to set, parse any numeric properties
|
|
* (index, boolean, etc) if they are specified as strings and add the
|
|
* resulting nvpair to the returned nvlist.
|
|
*
|
|
* At the DSL layer, all properties are either 64-bit numbers or strings.
|
|
* We want the user to be able to ignore this fact and specify properties
|
|
* as native values (numbers, for example) or as strings (to simplify
|
|
* command line utilities). This also handles converting index types
|
|
* (compression, checksum, etc) from strings to their on-disk index.
|
|
*/
|
|
int
|
|
zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop,
|
|
zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp,
|
|
const char *errbuf)
|
|
{
|
|
data_type_t datatype = nvpair_type(elem);
|
|
zprop_type_t proptype;
|
|
const char *propname;
|
|
char *value;
|
|
boolean_t isnone = B_FALSE;
|
|
int err = 0;
|
|
|
|
if (type == ZFS_TYPE_POOL) {
|
|
proptype = zpool_prop_get_type(prop);
|
|
propname = zpool_prop_to_name(prop);
|
|
} else {
|
|
proptype = zfs_prop_get_type(prop);
|
|
propname = zfs_prop_to_name(prop);
|
|
}
|
|
|
|
/*
|
|
* Convert any properties to the internal DSL value types.
|
|
*/
|
|
*svalp = NULL;
|
|
*ivalp = 0;
|
|
|
|
switch (proptype) {
|
|
case PROP_TYPE_STRING:
|
|
if (datatype != DATA_TYPE_STRING) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a string"), nvpair_name(elem));
|
|
goto error;
|
|
}
|
|
err = nvpair_value_string(elem, svalp);
|
|
if (err != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' is invalid"), nvpair_name(elem));
|
|
goto error;
|
|
}
|
|
if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' is too long"), nvpair_name(elem));
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case PROP_TYPE_NUMBER:
|
|
if (datatype == DATA_TYPE_STRING) {
|
|
(void) nvpair_value_string(elem, &value);
|
|
if (strcmp(value, "none") == 0) {
|
|
isnone = B_TRUE;
|
|
} else if (zfs_nicestrtonum(hdl, value, ivalp)
|
|
!= 0) {
|
|
goto error;
|
|
}
|
|
} else if (datatype == DATA_TYPE_UINT64) {
|
|
(void) nvpair_value_uint64(elem, ivalp);
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a number"), nvpair_name(elem));
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Quota special: force 'none' and don't allow 0.
|
|
*/
|
|
if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone &&
|
|
(prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"use 'none' to disable quota/refquota"));
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Special handling for "*_limit=none". In this case it's not
|
|
* 0 but UINT64_MAX.
|
|
*/
|
|
if ((type & ZFS_TYPE_DATASET) && isnone &&
|
|
(prop == ZFS_PROP_FILESYSTEM_LIMIT ||
|
|
prop == ZFS_PROP_SNAPSHOT_LIMIT)) {
|
|
*ivalp = UINT64_MAX;
|
|
}
|
|
break;
|
|
|
|
case PROP_TYPE_INDEX:
|
|
if (datatype != DATA_TYPE_STRING) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a string"), nvpair_name(elem));
|
|
goto error;
|
|
}
|
|
|
|
(void) nvpair_value_string(elem, &value);
|
|
|
|
if (zprop_string_to_index(prop, value, ivalp, type) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be one of '%s'"), propname,
|
|
zprop_values(prop, type));
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
/*
|
|
* Add the result to our return set of properties.
|
|
*/
|
|
if (*svalp != NULL) {
|
|
if (nvlist_add_string(ret, propname, *svalp) != 0) {
|
|
(void) no_memory(hdl);
|
|
return (-1);
|
|
}
|
|
} else {
|
|
if (nvlist_add_uint64(ret, propname, *ivalp) != 0) {
|
|
(void) no_memory(hdl);
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
error:
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
return (-1);
|
|
}
|
|
|
|
static int
|
|
addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp,
|
|
zfs_type_t type)
|
|
{
|
|
int prop;
|
|
zprop_list_t *entry;
|
|
|
|
prop = zprop_name_to_prop(propname, type);
|
|
|
|
if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type, B_FALSE))
|
|
prop = ZPROP_INVAL;
|
|
|
|
/*
|
|
* When no property table entry can be found, return failure if
|
|
* this is a pool property or if this isn't a user-defined
|
|
* dataset property,
|
|
*/
|
|
if (prop == ZPROP_INVAL && ((type == ZFS_TYPE_POOL &&
|
|
!zpool_prop_feature(propname) &&
|
|
!zpool_prop_unsupported(propname)) ||
|
|
(type == ZFS_TYPE_DATASET && !zfs_prop_user(propname) &&
|
|
!zfs_prop_userquota(propname) && !zfs_prop_written(propname)))) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid property '%s'"), propname);
|
|
return (zfs_error(hdl, EZFS_BADPROP,
|
|
dgettext(TEXT_DOMAIN, "bad property list")));
|
|
}
|
|
|
|
if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
|
|
return (-1);
|
|
|
|
entry->pl_prop = prop;
|
|
if (prop == ZPROP_INVAL) {
|
|
if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) ==
|
|
NULL) {
|
|
free(entry);
|
|
return (-1);
|
|
}
|
|
entry->pl_width = strlen(propname);
|
|
} else {
|
|
entry->pl_width = zprop_width(prop, &entry->pl_fixed,
|
|
type);
|
|
}
|
|
|
|
*listp = entry;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Given a comma-separated list of properties, construct a property list
|
|
* containing both user-defined and native properties. This function will
|
|
* return a NULL list if 'all' is specified, which can later be expanded
|
|
* by zprop_expand_list().
|
|
*/
|
|
int
|
|
zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp,
|
|
zfs_type_t type)
|
|
{
|
|
*listp = NULL;
|
|
|
|
/*
|
|
* If 'all' is specified, return a NULL list.
|
|
*/
|
|
if (strcmp(props, "all") == 0)
|
|
return (0);
|
|
|
|
/*
|
|
* If no props were specified, return an error.
|
|
*/
|
|
if (props[0] == '\0') {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"no properties specified"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN,
|
|
"bad property list")));
|
|
}
|
|
|
|
/*
|
|
* It would be nice to use getsubopt() here, but the inclusion of column
|
|
* aliases makes this more effort than it's worth.
|
|
*/
|
|
while (*props != '\0') {
|
|
size_t len;
|
|
char *p;
|
|
char c;
|
|
|
|
if ((p = strchr(props, ',')) == NULL) {
|
|
len = strlen(props);
|
|
p = props + len;
|
|
} else {
|
|
len = p - props;
|
|
}
|
|
|
|
/*
|
|
* Check for empty options.
|
|
*/
|
|
if (len == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"empty property name"));
|
|
return (zfs_error(hdl, EZFS_BADPROP,
|
|
dgettext(TEXT_DOMAIN, "bad property list")));
|
|
}
|
|
|
|
/*
|
|
* Check all regular property names.
|
|
*/
|
|
c = props[len];
|
|
props[len] = '\0';
|
|
|
|
if (strcmp(props, "space") == 0) {
|
|
static char *spaceprops[] = {
|
|
"name", "avail", "used", "usedbysnapshots",
|
|
"usedbydataset", "usedbyrefreservation",
|
|
"usedbychildren", NULL
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; spaceprops[i]; i++) {
|
|
if (addlist(hdl, spaceprops[i], listp, type))
|
|
return (-1);
|
|
listp = &(*listp)->pl_next;
|
|
}
|
|
} else {
|
|
if (addlist(hdl, props, listp, type))
|
|
return (-1);
|
|
listp = &(*listp)->pl_next;
|
|
}
|
|
|
|
props = p;
|
|
if (c == ',')
|
|
props++;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
zprop_free_list(zprop_list_t *pl)
|
|
{
|
|
zprop_list_t *next;
|
|
|
|
while (pl != NULL) {
|
|
next = pl->pl_next;
|
|
free(pl->pl_user_prop);
|
|
free(pl);
|
|
pl = next;
|
|
}
|
|
}
|
|
|
|
typedef struct expand_data {
|
|
zprop_list_t **last;
|
|
libzfs_handle_t *hdl;
|
|
zfs_type_t type;
|
|
} expand_data_t;
|
|
|
|
int
|
|
zprop_expand_list_cb(int prop, void *cb)
|
|
{
|
|
zprop_list_t *entry;
|
|
expand_data_t *edp = cb;
|
|
|
|
if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL)
|
|
return (ZPROP_INVAL);
|
|
|
|
entry->pl_prop = prop;
|
|
entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type);
|
|
entry->pl_all = B_TRUE;
|
|
|
|
*(edp->last) = entry;
|
|
edp->last = &entry->pl_next;
|
|
|
|
return (ZPROP_CONT);
|
|
}
|
|
|
|
int
|
|
zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type)
|
|
{
|
|
zprop_list_t *entry;
|
|
zprop_list_t **last;
|
|
expand_data_t exp;
|
|
|
|
if (*plp == NULL) {
|
|
/*
|
|
* If this is the very first time we've been called for an 'all'
|
|
* specification, expand the list to include all native
|
|
* properties.
|
|
*/
|
|
last = plp;
|
|
|
|
exp.last = last;
|
|
exp.hdl = hdl;
|
|
exp.type = type;
|
|
|
|
if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE,
|
|
B_FALSE, type) == ZPROP_INVAL)
|
|
return (-1);
|
|
|
|
/*
|
|
* Add 'name' to the beginning of the list, which is handled
|
|
* specially.
|
|
*/
|
|
if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
|
|
return (-1);
|
|
|
|
entry->pl_prop = (type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME :
|
|
ZFS_PROP_NAME;
|
|
entry->pl_width = zprop_width(entry->pl_prop,
|
|
&entry->pl_fixed, type);
|
|
entry->pl_all = B_TRUE;
|
|
entry->pl_next = *plp;
|
|
*plp = entry;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered,
|
|
zfs_type_t type)
|
|
{
|
|
return (zprop_iter_common(func, cb, show_all, ordered, type));
|
|
}
|