a64ed08955
(name, value) pairs to be associated with inodes. This support is
used for ACLs, MAC labels, and Capabilities in the TrustedBSD
security extensions, which are currently under development.
In this implementation, attributes are backed to data vnodes in the
style of the quota support in FFS. Support for FFS extended
attributes may be enabled using the FFS_EXTATTR kernel option
(disabled by default). Userland utilities and man pages will be
committed in the next batch. VFS interfaces and man pages have
been in the repo since 4.0-RELEASE and are unchanged.
o ufs/ufs/extattr.h: UFS-specific extattr defines
o ufs/ufs/ufs_extattr.c: bulk of support routines
o ufs/{ufs,ffs,mfs}/*.[ch]: hooks and extattr.h includes
o contrib/softupdates/ffs_softdep.c: extattr.h includes
o conf/options, conf/files, i386/conf/LINT: added FFS_EXTATTR
o coda/coda_vfsops.c: XXX required extattr.h due to ufsmount.h
(This should not be the case, and will be fixed in a future commit)
Currently attributes are not supported in MFS. This will be fixed.
Reviewed by: adrian, bp, freebsd-fs, other unthanked souls
Obtained from: TrustedBSD Project
133 lines
5.0 KiB
C
133 lines
5.0 KiB
C
/*
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
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* $FreeBSD$
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*/
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#ifndef _UFS_UFS_UFSMOUNT_H_
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#define _UFS_UFS_UFSMOUNT_H_
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/*
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* Arguments to mount UFS-based filesystems
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*/
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struct ufs_args {
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char *fspec; /* block special device to mount */
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struct export_args export; /* network export information */
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};
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/*
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* Arguments to mount MFS
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*/
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struct mfs_args {
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char *fspec; /* name to export for statfs */
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struct export_args export; /* if exported MFSes are supported */
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caddr_t base; /* base of file system in memory */
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u_long size; /* size of file system */
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};
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#ifdef _KERNEL
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_UFSMNT);
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#endif
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struct buf;
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struct inode;
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struct nameidata;
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struct timeval;
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struct ucred;
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struct uio;
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struct vnode;
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struct netexport;
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struct ufs_extattr_per_mount;
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/* This structure describes the UFS specific mount structure data. */
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struct ufsmount {
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struct mount *um_mountp; /* filesystem vfs structure */
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dev_t um_dev; /* device mounted */
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struct vnode *um_devvp; /* block device mounted vnode */
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union { /* pointer to superblock */
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struct fs *fs; /* FFS */
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struct ext2_sb_info *e2fs; /* EXT2FS */
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} ufsmount_u;
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#define um_fs ufsmount_u.fs
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#define um_e2fs ufsmount_u.e2fs
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#define um_e2fsb ufsmount_u.e2fs->s_es
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struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
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struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */
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struct ufs_extattr_per_mount um_extattr; /* extended attrs */
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u_long um_nindir; /* indirect ptrs per block */
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u_long um_bptrtodb; /* indir ptr to disk block */
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u_long um_seqinc; /* inc between seq blocks */
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time_t um_btime[MAXQUOTAS]; /* block quota time limit */
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time_t um_itime[MAXQUOTAS]; /* inode quota time limit */
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char um_qflags[MAXQUOTAS]; /* quota specific flags */
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struct netexport um_export; /* export information */
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int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */
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struct malloc_type *um_malloctype; /* The inodes malloctype */
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int um_i_effnlink_valid; /* i_effnlink valid? */
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int (*um_blkatoff) __P((struct vnode *, off_t, char **, struct buf **));
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int (*um_truncate) __P((struct vnode *, off_t, int, struct ucred *, struct proc *));
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int (*um_update) __P((struct vnode *, int));
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int (*um_valloc) __P((struct vnode *, int, struct ucred *, struct vnode **));
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int (*um_vfree) __P((struct vnode *, ino_t, int));
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};
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#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
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#define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee)
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#define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
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#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
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#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
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/*
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* Flags describing the state of quotas.
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*/
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#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
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#define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
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/* Convert mount ptr to ufsmount ptr. */
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#define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data))
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/*
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* Macros to access file system parameters in the ufsmount structure.
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* Used by ufs_bmap.
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*/
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#define MNINDIR(ump) ((ump)->um_nindir)
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#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
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#define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
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#endif /* _KERNEL */
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#endif
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