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3af56fd95f
ZFS incorrectly uses directory-based extended attributes even when
xattr=sa is specified as a dataset property or mount option. Support to
honor temporary mount options including "xattr" was added in commit
0282c4137e. There are two issues with the
mount option handling:
* Libzfs has historically included "xattr" in its list of default mount
options. This overrides the dataset property, so the dataset is always
configured to use directory-based xattrs even when the xattr dataset
property is set to off or sa. Address this by removing "xattr" from
the set of default mount options in libzfs.
* There was no way to enable system attribute-based extended attributes
using temporary mount options. Add the mount options "saxattr" and
"dirxattr" which enable the xattr behavior their names suggest. This
approach has the advantages of mirroring the valid xattr dataset
property values and following existing conventions for mount option
names.
Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3787
103 lines
4.9 KiB
C
103 lines
4.9 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 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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* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
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* All Rights Reserved
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*/
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#ifndef _SYS_MNTENT_H
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#define _SYS_MNTENT_H
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#define MNTTYPE_ZFS "zfs" /* ZFS file system */
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#define MOUNT_SUCCESS 0x00 /* Success */
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#define MOUNT_USAGE 0x01 /* Invalid invocation or permissions */
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#define MOUNT_SYSERR 0x02 /* System error (ENOMEM, etc) */
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#define MOUNT_SOFTWARE 0x04 /* Internal mount bug */
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#define MOUNT_USER 0x08 /* Interrupted by user (EINTR) */
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#define MOUNT_FILEIO 0x10 /* Error updating/locking /etc/mtab */
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#define MOUNT_FAIL 0x20 /* Mount failed */
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#define MOUNT_SOMEOK 0x40 /* At least on mount succeeded */
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#define MOUNT_BUSY 0x80 /* Mount failed due to EBUSY */
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#define MNTOPT_ASYNC "async" /* all I/O is asynchronous */
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#define MNTOPT_ATIME "atime" /* update atime for files */
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#define MNTOPT_NOATIME "noatime" /* do not update atime for files */
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#define MNTOPT_AUTO "auto" /* automount */
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#define MNTOPT_NOAUTO "noauto" /* do not automount */
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#define MNTOPT_CONTEXT "context" /* selinux context */
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#define MNTOPT_FSCONTEXT "fscontext" /* selinux fscontext */
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#define MNTOPT_DEFCONTEXT "defcontext" /* selinux defcontext */
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#define MNTOPT_ROOTCONTEXT "rootcontext" /* selinux rootcontext */
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#define MNTOPT_DEFAULTS "defaults" /* defaults */
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#define MNTOPT_DEVICES "dev" /* device-special allowed */
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#define MNTOPT_NODEVICES "nodev" /* device-special disallowed */
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#define MNTOPT_DIRATIME "diratime" /* update atime for dirs */
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#define MNTOPT_NODIRATIME "nodiratime" /* do not update atime for dirs */
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#define MNTOPT_DIRSYNC "dirsync" /* do dir updates synchronously */
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#define MNTOPT_EXEC "exec" /* enable executables */
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#define MNTOPT_NOEXEC "noexec" /* disable executables */
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#define MNTOPT_GROUP "group" /* allow group mount */
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#define MNTOPT_NOGROUP "nogroup" /* do not allow group mount */
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#define MNTOPT_IVERSION "iversion" /* update inode version */
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#define MNTOPT_NOIVERSION "noiversion" /* do not update inode version */
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#define MNTOPT_NBMAND "mand" /* allow non-blocking mandatory locks */
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#define MNTOPT_NONBMAND "nomand" /* deny non-blocking mandatory locks */
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#define MNTOPT_NETDEV "_netdev" /* network device */
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#define MNTOPT_NOFAIL "nofail" /* no failure */
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#define MNTOPT_RELATIME "relatime" /* allow relative time updates */
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#define MNTOPT_NORELATIME "norelatime" /* do not allow relative time updates */
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#define MNTOPT_DFRATIME "strictatime" /* Deferred access time updates */
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#define MNTOPT_NODFRATIME "nostrictatime" /* No Deferred access time updates */
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#define MNTOPT_SETUID "suid" /* Both setuid and devices allowed */
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#define MNTOPT_NOSETUID "nosuid" /* Neither setuid nor devices allowed */
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#define MNTOPT_OWNER "owner" /* allow owner mount */
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#define MNTOPT_NOOWNER "noowner" /* do not allow owner mount */
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#define MNTOPT_REMOUNT "remount" /* change mount options */
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#define MNTOPT_RO "ro" /* read only */
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#define MNTOPT_RW "rw" /* read/write */
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#define MNTOPT_SYNC "sync" /* all I/O is synchronous */
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#define MNTOPT_USER "user" /* allow user mount */
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#define MNTOPT_NOUSER "nouser" /* do not allow user mount */
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#define MNTOPT_USERS "users" /* allow user mount */
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#define MNTOPT_NOUSERS "nousers" /* do not allow user mount */
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#define MNTOPT_SUB "sub" /* allow mounts on subdirs */
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#define MNTOPT_NOSUB "nosub" /* do not allow mounts on subdirs */
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#define MNTOPT_QUIET "quiet" /* quiet mount */
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#define MNTOPT_LOUD "loud" /* verbose mount */
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#define MNTOPT_BIND "bind" /* remount part of a tree */
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#define MNTOPT_RBIND "rbind" /* include subtrees */
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#define MNTOPT_DIRXATTR "dirxattr" /* enable directory xattrs */
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#define MNTOPT_SAXATTR "saxattr" /* enable system-attribute xattrs */
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#define MNTOPT_XATTR "xattr" /* enable extended attributes */
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#define MNTOPT_NOXATTR "noxattr" /* disable extended attributes */
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#define MNTOPT_COMMENT "comment" /* comment */
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#define MNTOPT_ZFSUTIL "zfsutil" /* called by zfs utility */
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#define MNTOPT_ACL "acl" /* passed by util-linux-2.24 mount */
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#define MNTOPT_NOACL "noacl" /* likewise */
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#define MNTOPT_POSIXACL "posixacl" /* likewise */
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#define MNTOPT_MNTPOINT "mntpoint" /* mount point hint */
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#endif /* _SYS_MNTENT_H */
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