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mycroft 1994-06-08 11:22:45 +00:00
parent 1968713466
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77
sys/isofs/cd9660/TODO Normal file
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# $Id: TODO,v 1.1 1994/06/08 11:22:45 mycroft Exp $
1) should understand "older", original High Sierra ("CDROM001") type
Not yet. ( I don't have this technical information, yet. )
2) should understand Rock Ridge
Yes, we have follows function.
o Symbolic Link
o Real Name(long name)
o File Attribute
o Time stamp
o uid, gid
o Devices
o Relocated directories
Except follows:
o POSIX device number mapping
There is some preliminary stuff in there that (ab-)uses the mknod
system call, but this needs a writable filesystem
3) should be called cdfs, as there are other ISO file system soon possible
Not yet. Probably we should make another file system when the ECMA draft
is valid and do it. For doing Rock Ridge Support, I can use almost same
code. So I just use the same file system interface...
4) should have file handles implemented for use with NFS, etc
Yes. we have already this one, and I based it for this release.
5) should have name translation enabled by mount flag
Yes. we can disable the Rock Ridge Extension by follows option;
"mount -t isofs -o -norrip /dev/cd0d /cdrom"
6) should run as a user process, and not take up kernel space (cdroms
are slow)
Not yet.
7) ECMA support.
Not yet. we need not only a technical spec but also ECMA format
cd-rom itself!
8) Character set change by SVD ( multi SVD support )
Not yet. We should also hack the other part of system as 8 bit
clean. As far as I know, if you export the cdrom by NFS, the client
can access the 8 bit clean (ie. Solaris Japanese with EUC code )
9) Access checks in isofs_access
Not yet.
10) Support for generation numbers
Yes. Default is to list only the last file (the one with the highest
generation number). If you mount with -gen, all files are shown with
their generation numbers. In both cases you can specify the generation
number on opening files (if you happen to know it) or leave it off,
when it will again find the last file.
11) Support for extended attributes
Yes. Since this requires an extra block buffer for the attributes
this must be enabled on mounting with the option -extattr.
----------
Last update July 19, '93 by Atsushi Murai. (amurai@spec.co.jp)
Last update August 19, '93 by Wolfgang Solfrank. (ws@tools.de)

20
sys/isofs/cd9660/TODO.hibler Normal file
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# $Id: TODO.hibler,v 1.1 1994/06/08 11:22:47 mycroft Exp $
1. Investiate making ISOFS another UFS shared filesystem (ala FFS/MFS/LFS).
Since it was modelled after the inode code, we might be able to merge
them back. It looks like a seperate (but very similar) lookup routine
will be needed due to the associated file stuff.
3. If it can't be merged with UFS, at least get them in sync. For example,
it could use the same style hashing routines as in ufs/ufs_ihash.c
4. It would be nice to be able to use the vfs_cluster code.
Unfortunately, if the logical block size is smaller than the page size,
it won't work. Also, if throughtput is relatively constant for any
block size (as it is for the HP drive--150kbs) then clustering may not
buy much (or may even hurt when vfs_cluster comes up with a large sync
cluster).
5. Seems like there should be a "notrans" or some such mount option to show
filenames as they really are without lower-casing, stripping of version
numbers, etc. Does this make sense?

103
sys/isofs/cd9660/cd9660_bmap.c Normal file
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/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_bmap.c 8.3 (Berkeley) 1/23/94
* $Id: cd9660_bmap.c,v 1.1 1994/06/08 11:22:48 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/namei.h>
#include <sys/buf.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
/*
* Bmap converts a the logical block number of a file to its physical block
* number on the disk. The conversion is done by using the logical block
* number to index into the data block (extent) for the file.
*/
int
cd9660_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
daddr_t *a_bnp;
int *a_runp;
} */ *ap;
{
struct iso_node *ip = VTOI(ap->a_vp);
daddr_t lblkno = ap->a_bn;
long bsize;
/*
* Check for underlying vnode requests and ensure that logical
* to physical mapping is requested.
*/
if (ap->a_vpp != NULL)
*ap->a_vpp = ip->i_devvp;
if (ap->a_bnp == NULL)
return (0);
/*
* Compute the requested block number
*/
bsize = ip->i_mnt->logical_block_size;
*ap->a_bnp = (ip->iso_start + lblkno) * btodb(bsize);
/*
* Determine maximum number of readahead blocks following the
* requested block.
*/
if (ap->a_runp) {
int nblk;
nblk = (ip->i_size - (lblkno + 1) * bsize) / bsize;
if (nblk <= 0)
*ap->a_runp = 0;
else if (nblk >= MAXBSIZE/bsize)
*ap->a_runp = MAXBSIZE/bsize - 1;
else
*ap->a_runp = nblk;
}
return 0;
}

465
sys/isofs/cd9660/cd9660_lookup.c Normal file
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/*-
* Copyright (c) 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)ufs_lookup.c 7.33 (Berkeley) 5/19/91
* from: @(#)cd9660_lookup.c 8.2 (Berkeley) 1/23/94
* $Id: cd9660_lookup.c,v 1.1 1994/06/08 11:22:49 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/namei.h>
#include <sys/buf.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
#include <isofs/cd9660/iso_rrip.h>
#include <isofs/cd9660/cd9660_rrip.h>
struct nchstats iso_nchstats;
/*
* Convert a component of a pathname into a pointer to a locked inode.
* This is a very central and rather complicated routine.
* If the file system is not maintained in a strict tree hierarchy,
* this can result in a deadlock situation (see comments in code below).
*
* The flag argument is LOOKUP, CREATE, RENAME, or DELETE depending on
* whether the name is to be looked up, created, renamed, or deleted.
* When CREATE, RENAME, or DELETE is specified, information usable in
* creating, renaming, or deleting a directory entry may be calculated.
* If flag has LOCKPARENT or'ed into it and the target of the pathname
* exists, lookup returns both the target and its parent directory locked.
* When creating or renaming and LOCKPARENT is specified, the target may
* not be ".". When deleting and LOCKPARENT is specified, the target may
* be "."., but the caller must check to ensure it does an vrele and iput
* instead of two iputs.
*
* Overall outline of ufs_lookup:
*
* check accessibility of directory
* look for name in cache, if found, then if at end of path
* and deleting or creating, drop it, else return name
* search for name in directory, to found or notfound
* notfound:
* if creating, return locked directory, leaving info on available slots
* else return error
* found:
* if at end of path and deleting, return information to allow delete
* if at end of path and rewriting (RENAME and LOCKPARENT), lock target
* inode and return info to allow rewrite
* if not at end, add name to cache; if at end and neither creating
* nor deleting, add name to cache
*
* NOTE: (LOOKUP | LOCKPARENT) currently returns the parent inode unlocked.
*/
cd9660_lookup(ap)
struct vop_lookup_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
} */ *ap;
{
register struct vnode *vdp; /* vnode for directory being searched */
register struct iso_node *dp; /* inode for directory being searched */
register struct iso_mnt *imp; /* file system that directory is in */
struct buf *bp; /* a buffer of directory entries */
struct iso_directory_record *ep;/* the current directory entry */
int entryoffsetinblock; /* offset of ep in bp's buffer */
int saveoffset; /* offset of last directory entry in dir */
int numdirpasses; /* strategy for directory search */
doff_t endsearch; /* offset to end directory search */
struct iso_node *pdp; /* saved dp during symlink work */
struct iso_node *tdp; /* returned by iget */
int lockparent; /* 1 => lockparent flag is set */
int wantparent; /* 1 => wantparent or lockparent flag */
int error;
ino_t ino = 0;
int reclen;
u_short namelen;
char altname[NAME_MAX];
int res;
int assoc, len;
char *name;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct ucred *cred = cnp->cn_cred;
int flags = cnp->cn_flags;
int nameiop = cnp->cn_nameiop;
bp = NULL;
*vpp = NULL;
vdp = ap->a_dvp;
dp = VTOI(vdp);
imp = dp->i_mnt;
lockparent = flags & LOCKPARENT;
wantparent = flags & (LOCKPARENT|WANTPARENT);
/*
* Check accessiblity of directory.
*/
if (vdp->v_type != VDIR)
return (ENOTDIR);
if (error = VOP_ACCESS(vdp, VEXEC, cred, cnp->cn_proc))
return (error);
/*
* We now have a segment name to search for, and a directory to search.
*
* Before tediously performing a linear scan of the directory,
* check the name cache to see if the directory/name pair
* we are looking for is known already.
*/
if (error = cache_lookup(vdp, vpp, cnp)) {
int vpid; /* capability number of vnode */
if (error == ENOENT)
return (error);
#ifdef PARANOID
if ((vdp->v_flag & VROOT) && (flags & ISDOTDOT))
panic("ufs_lookup: .. through root");
#endif
/*
* Get the next vnode in the path.
* See comment below starting `Step through' for
* an explaination of the locking protocol.
*/
pdp = dp;
dp = VTOI(*vpp);
vdp = *vpp;
vpid = vdp->v_id;
if (pdp == dp) {
VREF(vdp);
error = 0;
} else if (flags & ISDOTDOT) {
ISO_IUNLOCK(pdp);
error = vget(vdp, 1);
if (!error && lockparent && (flags & ISLASTCN))
ISO_ILOCK(pdp);
} else {
error = vget(vdp, 1);
if (!lockparent || error || !(flags & ISLASTCN))
ISO_IUNLOCK(pdp);
}
/*
* Check that the capability number did not change
* while we were waiting for the lock.
*/
if (!error) {
if (vpid == vdp->v_id)
return (0);
iso_iput(dp);
if (lockparent && pdp != dp && (flags & ISLASTCN))
ISO_IUNLOCK(pdp);
}
ISO_ILOCK(pdp);
dp = pdp;
vdp = ITOV(dp);
*vpp = NULL;
}
len = cnp->cn_namelen;
name = cnp->cn_nameptr;
/*
* A leading `=' means, we are looking for an associated file
*/
if (assoc = (imp->iso_ftype != ISO_FTYPE_RRIP && *name == ASSOCCHAR)) {
len--;
name++;
}
/*
* If there is cached information on a previous search of
* this directory, pick up where we last left off.
* We cache only lookups as these are the most common
* and have the greatest payoff. Caching CREATE has little
* benefit as it usually must search the entire directory
* to determine that the entry does not exist. Caching the
* location of the last DELETE or RENAME has not reduced
* profiling time and hence has been removed in the interest
* of simplicity.
*/
if (nameiop != LOOKUP || dp->i_diroff == 0 ||
dp->i_diroff > dp->i_size) {
entryoffsetinblock = 0;
dp->i_offset = 0;
numdirpasses = 1;
} else {
dp->i_offset = dp->i_diroff;
entryoffsetinblock = iso_blkoff(imp, dp->i_offset);
if (entryoffsetinblock != 0) {
if (error = iso_blkatoff(dp, dp->i_offset, &bp))
return (error);
}
numdirpasses = 2;
iso_nchstats.ncs_2passes++;
}
endsearch = roundup(dp->i_size, imp->logical_block_size);
searchloop:
while (dp->i_offset < endsearch) {
/*
* If offset is on a block boundary,
* read the next directory block.
* Release previous if it exists.
*/
if (iso_blkoff(imp, dp->i_offset) == 0) {
if (bp != NULL)
brelse(bp);
if (error = iso_blkatoff(dp, dp->i_offset, &bp))
return (error);
entryoffsetinblock = 0;
}
/*
* Get pointer to next entry.
*/
ep = (struct iso_directory_record *)
(bp->b_un.b_addr + entryoffsetinblock);
reclen = isonum_711 (ep->length);
if (reclen == 0) {
/* skip to next block, if any */
dp->i_offset =
roundup(dp->i_offset, imp->logical_block_size);
continue;
}
if (reclen < ISO_DIRECTORY_RECORD_SIZE)
/* illegal entry, stop */
break;
if (entryoffsetinblock + reclen > imp->logical_block_size)
/* entries are not allowed to cross boundaries */
break;
/*
* Check for a name match.
*/
namelen = isonum_711(ep->name_len);
if (reclen < ISO_DIRECTORY_RECORD_SIZE + namelen)
/* illegal entry, stop */
break;
switch (imp->iso_ftype) {
default:
if ((!(isonum_711(ep->flags)&4)) == !assoc) {
if ((len == 1
&& *name == '.')
|| (flags & ISDOTDOT)) {
if (namelen == 1
&& ep->name[0] == ((flags & ISDOTDOT) ? 1 : 0)) {
/*
* Save directory entry's inode number and
* reclen in ndp->ni_ufs area, and release
* directory buffer.
*/
isodirino(&dp->i_ino,ep,imp);
goto found;
}
if (namelen != 1
|| ep->name[0] != 0)
goto notfound;
} else if (!(res = isofncmp(name,len,
ep->name,namelen))) {
if (isonum_711(ep->flags)&2)
isodirino(&ino,ep,imp);
else
ino = dbtob(bp->b_blkno)
+ entryoffsetinblock;
saveoffset = dp->i_offset;
} else if (ino)
goto foundino;
#ifdef NOSORTBUG /* On some CDs directory entries are not sorted correctly */
else if (res < 0)
goto notfound;
else if (res > 0 && numdirpasses == 2)
numdirpasses++;
#endif
}
break;
case ISO_FTYPE_RRIP:
if (isonum_711(ep->flags)&2)
isodirino(&ino,ep,imp);
else
ino = dbtob(bp->b_blkno) + entryoffsetinblock;
dp->i_ino = ino;
cd9660_rrip_getname(ep,altname,&namelen,&dp->i_ino,imp);
if (namelen == cnp->cn_namelen
&& !bcmp(name,altname,namelen))
goto found;
ino = 0;
break;
}
dp->i_offset += reclen;
entryoffsetinblock += reclen;
}
if (ino) {
foundino:
dp->i_ino = ino;
if (saveoffset != dp->i_offset) {
if (iso_lblkno(imp,dp->i_offset)
!= iso_lblkno(imp,saveoffset)) {
if (bp != NULL)
brelse(bp);
if (error = iso_blkatoff(dp, saveoffset, &bp))
return (error);
}
ep = (struct iso_directory_record *)(bp->b_un.b_addr
+ iso_blkoff(imp,saveoffset));
dp->i_offset = saveoffset;
}
goto found;
}
notfound:
/*
* If we started in the middle of the directory and failed
* to find our target, we must check the beginning as well.
*/
if (numdirpasses == 2) {
numdirpasses--;
dp->i_offset = 0;
endsearch = dp->i_diroff;
goto searchloop;
}
if (bp != NULL)
brelse(bp);
/*
* Insert name into cache (as non-existent) if appropriate.
*/
if (cnp->cn_flags & MAKEENTRY)
cache_enter(vdp, *vpp, cnp);
if (nameiop == CREATE || nameiop == RENAME)
return (EJUSTRETURN);
return (ENOENT);
found:
if (numdirpasses == 2)
iso_nchstats.ncs_pass2++;
if (bp != NULL)
brelse(bp);
/*
* Found component in pathname.
* If the final component of path name, save information
* in the cache as to where the entry was found.
*/
if ((flags & ISLASTCN) && nameiop == LOOKUP)
dp->i_diroff = dp->i_offset;
/*
* Step through the translation in the name. We do not `iput' the
* directory because we may need it again if a symbolic link
* is relative to the current directory. Instead we save it
* unlocked as "pdp". We must get the target inode before unlocking
* the directory to insure that the inode will not be removed
* before we get it. We prevent deadlock by always fetching
* inodes from the root, moving down the directory tree. Thus
* when following backward pointers ".." we must unlock the
* parent directory before getting the requested directory.
* There is a potential race condition here if both the current
* and parent directories are removed before the `iget' for the
* inode associated with ".." returns. We hope that this occurs
* infrequently since we cannot avoid this race condition without
* implementing a sophisticated deadlock detection algorithm.
* Note also that this simple deadlock detection scheme will not
* work if the file system has any hard links other than ".."
* that point backwards in the directory structure.
*/
pdp = dp;
/*
* If ino is different from dp->i_ino,
* it's a relocated directory.
*/
if (flags & ISDOTDOT) {
ISO_IUNLOCK(pdp); /* race to get the inode */
if (error = iso_iget(dp,dp->i_ino,
dp->i_ino != ino,
&tdp,ep)) {
ISO_ILOCK(pdp);
return (error);
}
if (lockparent && (flags & ISLASTCN))
ISO_ILOCK(pdp);
*vpp = ITOV(tdp);
} else if (dp->i_number == dp->i_ino) {
VREF(vdp); /* we want ourself, ie "." */
*vpp = vdp;
} else {
if (error = iso_iget(dp,dp->i_ino,dp->i_ino!=ino,&tdp,ep))
return (error);
if (!lockparent || !(flags & ISLASTCN))
ISO_IUNLOCK(pdp);
*vpp = ITOV(tdp);
}
/*
* Insert name into cache if appropriate.
*/
if (cnp->cn_flags & MAKEENTRY)
cache_enter(vdp, *vpp, cnp);
return (0);
}
/*
* Return buffer with contents of block "offset"
* from the beginning of directory "ip". If "res"
* is non-zero, fill it in with a pointer to the
* remaining space in the directory.
*/
iso_blkatoff(ip, offset, bpp)
struct iso_node *ip;
doff_t offset;
struct buf **bpp;
{
register struct iso_mnt *imp = ip->i_mnt;
daddr_t lbn = iso_lblkno(imp,offset);
int bsize = iso_blksize(imp,ip,lbn);
struct buf *bp;
int error;
if (error = bread(ITOV(ip),lbn,bsize,NOCRED,&bp)) {
brelse(bp);
*bpp = 0;
return (error);
}
*bpp = bp;
return (0);
}

649
sys/isofs/cd9660/cd9660_node.c Normal file
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/*-
* Copyright (c) 1982, 1986, 1989, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_node.c 8.2 (Berkeley) 1/23/94
* $Id: cd9660_node.c,v 1.1 1994/06/08 11:22:51 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/buf.h>
#include <sys/vnode.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/stat.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
#include <isofs/cd9660/iso_rrip.h>
#define INOHSZ 512
#if ((INOHSZ&(INOHSZ-1)) == 0)
#define INOHASH(dev,ino) (((dev)+((ino)>>12))&(INOHSZ-1))
#else
#define INOHASH(dev,ino) (((unsigned)((dev)+((ino)>>12)))%INOHSZ)
#endif
union iso_ihead {
union iso_ihead *ih_head[2];
struct iso_node *ih_chain[2];
} iso_ihead[INOHSZ];
#ifdef ISODEVMAP
#define DNOHSZ 64
#if ((DNOHSZ&(DNOHSZ-1)) == 0)
#define DNOHASH(dev,ino) (((dev)+((ino)>>12))&(DNOHSZ-1))
#else
#define DNOHASH(dev,ino) (((unsigned)((dev)+((ino)>>12)))%DNOHSZ)
#endif
union iso_dhead {
union iso_dhead *dh_head[2];
struct iso_dnode *dh_chain[2];
} iso_dhead[DNOHSZ];
#endif
int prtactive; /* 1 => print out reclaim of active vnodes */
/*
* Initialize hash links for inodes and dnodes.
*/
cd9660_init()
{
register int i;
register union iso_ihead *ih = iso_ihead;
#ifdef ISODEVMAP
register union iso_dhead *dh = iso_dhead;
#endif
for (i = INOHSZ; --i >= 0; ih++) {
ih->ih_head[0] = ih;
ih->ih_head[1] = ih;
}
#ifdef ISODEVMAP
for (i = DNOHSZ; --i >= 0; dh++) {
dh->dh_head[0] = dh;
dh->dh_head[1] = dh;
}
#endif
}
#ifdef ISODEVMAP
/*
* Enter a new node into the device hash list
*/
struct iso_dnode *
iso_dmap(dev,ino,create)
dev_t dev;
ino_t ino;
int create;
{
struct iso_dnode *dp;
union iso_dhead *dh;
dh = &iso_dhead[DNOHASH(dev, ino)];
for (dp = dh->dh_chain[0];
dp != (struct iso_dnode *)dh;
dp = dp->d_forw)
if (ino == dp->i_number && dev == dp->i_dev)
return dp;
if (!create)
return (struct iso_dnode *)0;
MALLOC(dp,struct iso_dnode *,sizeof(struct iso_dnode),M_CACHE,M_WAITOK);
dp->i_dev = dev;
dp->i_number = ino;
insque(dp,dh);
return dp;
}
void
iso_dunmap(dev)
dev_t dev;
{
struct iso_dnode *dp, *dq;
union iso_dhead *dh;
for (dh = iso_dhead; dh < iso_dhead + DNOHSZ; dh++) {
for (dp = dh->dh_chain[0];
dp != (struct iso_dnode *)dh;
dp = dq) {
dq = dp->d_forw;
if (dev == dp->i_dev) {
remque(dp);
FREE(dp,M_CACHE);
}
}
}
}
#endif
/*
* Look up a ISOFS dinode number to find its incore vnode.
* If it is not in core, read it in from the specified device.
* If it is in core, wait for the lock bit to clear, then
* return the inode locked. Detection and handling of mount
* points must be done by the calling routine.
*/
iso_iget(xp, ino, relocated, ipp, isodir)
struct iso_node *xp;
ino_t ino;
struct iso_node **ipp;
struct iso_directory_record *isodir;
{
dev_t dev = xp->i_dev;
struct mount *mntp = ITOV(xp)->v_mount;
register struct iso_node *ip, *iq;
register struct vnode *vp;
register struct iso_dnode *dp;
struct vnode *nvp;
struct buf *bp = NULL, *bp2 = NULL;
union iso_ihead *ih;
union iso_dhead *dh;
int i, error, result;
struct iso_mnt *imp;
ino_t defino;
ih = &iso_ihead[INOHASH(dev, ino)];
loop:
for (ip = ih->ih_chain[0];
ip != (struct iso_node *)ih;
ip = ip->i_forw) {
if (ino != ip->i_number || dev != ip->i_dev)
continue;
if ((ip->i_flag&ILOCKED) != 0) {
ip->i_flag |= IWANT;
sleep((caddr_t)ip, PINOD);
goto loop;
}
if (vget(ITOV(ip), 1))
goto loop;
*ipp = ip;
return 0;
}
/*
* Allocate a new vnode/iso_node.
*/
if (error = getnewvnode(VT_ISOFS, mntp, cd9660_vnodeop_p, &nvp)) {
*ipp = 0;
return error;
}
MALLOC(ip, struct iso_node *, sizeof(struct iso_node),
M_ISOFSNODE, M_WAITOK);
bzero((caddr_t)ip, sizeof(struct iso_node));
nvp->v_data = ip;
ip->i_vnode = nvp;
ip->i_flag = 0;
ip->i_devvp = 0;
ip->i_diroff = 0;
ip->i_lockf = 0;
/*
* Put it onto its hash chain and lock it so that other requests for
* this inode will block if they arrive while we are sleeping waiting
* for old data structures to be purged or for the contents of the
* disk portion of this inode to be read.
*/
ip->i_dev = dev;
ip->i_number = ino;
insque(ip, ih);
ISO_ILOCK(ip);
imp = VFSTOISOFS (mntp);
ip->i_mnt = imp;
ip->i_devvp = imp->im_devvp;
VREF(ip->i_devvp);
if (relocated) {
/*
* On relocated directories we must
* read the `.' entry out of a dir.
*/
ip->iso_start = ino >> imp->im_bshift;
if (error = iso_blkatoff(ip,0,&bp)) {
vrele(ip->i_devvp);
remque(ip);
ip->i_forw = ip;
ip->i_back = ip;
iso_iput(ip);
*ipp = 0;
return error;
}
isodir = (struct iso_directory_record *)bp->b_un.b_addr;
}
ip->iso_extent = isonum_733(isodir->extent);
ip->i_size = isonum_733(isodir->size);
ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent;
vp = ITOV(ip);
/*
* Setup time stamp, attribute
*/
vp->v_type = VNON;
switch (imp->iso_ftype) {
default: /* ISO_FTYPE_9660 */
if ((imp->im_flags&ISOFSMNT_EXTATT)
&& isonum_711(isodir->ext_attr_length))
iso_blkatoff(ip,-isonum_711(isodir->ext_attr_length),
&bp2);
cd9660_defattr(isodir,ip,bp2 );
cd9660_deftstamp(isodir,ip,bp2 );
break;
case ISO_FTYPE_RRIP:
result = cd9660_rrip_analyze(isodir,ip,imp);
break;
}
if (bp2)
brelse(bp2);
if (bp)
brelse(bp);
/*
* Initialize the associated vnode
*/
vp->v_type = IFTOVT(ip->inode.iso_mode);
if ( vp->v_type == VFIFO ) {
#ifdef FIFO
extern int (**cd9660_fifoop_p)();
vp->v_op = cd9660_fifoop_p;
#else
iso_iput(ip);
*ipp = 0;
return EOPNOTSUPP;
#endif /* FIFO */
} else if ( vp->v_type == VCHR || vp->v_type == VBLK ) {
extern int (**cd9660_specop_p)();
/*
* if device, look at device number table for translation
*/
#ifdef ISODEVMAP
if (dp = iso_dmap(dev,ino,0))
ip->inode.iso_rdev = dp->d_dev;
#endif
vp->v_op = cd9660_specop_p;
if (nvp = checkalias(vp, ip->inode.iso_rdev, mntp)) {
/*
* Reinitialize aliased inode.
*/
vp = nvp;
iq = VTOI(vp);
iq->i_vnode = vp;
iq->i_flag = 0;
ISO_ILOCK(iq);
iq->i_dev = dev;
iq->i_number = ino;
iq->i_mnt = ip->i_mnt;
bcopy(&ip->iso_extent,&iq->iso_extent,
(char *)(ip + 1) - (char *)&ip->iso_extent);
insque(iq, ih);
/*
* Discard unneeded vnode
* (This introduces the need of INACTIVE modification)
*/
ip->inode.iso_mode = 0;
iso_iput(ip);
ip = iq;
}
}
if (ip->iso_extent == imp->root_extent)
vp->v_flag |= VROOT;
*ipp = ip;
return 0;
}
/*
* Unlock and decrement the reference count of an inode structure.
*/
iso_iput(ip)
register struct iso_node *ip;
{
if ((ip->i_flag & ILOCKED) == 0)
panic("iso_iput");
ISO_IUNLOCK(ip);
vrele(ITOV(ip));
}
/*
* Last reference to an inode, write the inode out and if necessary,
* truncate and deallocate the file.
*/
int
cd9660_inactive(ap)
struct vop_inactive_args /* {
struct vnode *a_vp;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
register struct iso_node *ip = VTOI(vp);
int mode, error = 0;
if (prtactive && vp->v_usecount != 0)
vprint("cd9660_inactive: pushing active", vp);
ip->i_flag = 0;
/*
* If we are done with the inode, reclaim it
* so that it can be reused immediately.
*/
if (vp->v_usecount == 0 && ip->inode.iso_mode == 0)
vgone(vp);
return error;
}
/*
* Reclaim an inode so that it can be used for other purposes.
*/
int
cd9660_reclaim(ap)
struct vop_reclaim_args /* {
struct vnode *a_vp;
} */ *ap;
{
register struct vnode *vp = ap->a_vp;
register struct iso_node *ip = VTOI(vp);
int i;
if (prtactive && vp->v_usecount != 0)
vprint("cd9660_reclaim: pushing active", vp);
/*
* Remove the inode from its hash chain.
*/
remque(ip);
ip->i_forw = ip;
ip->i_back = ip;
/*
* Purge old data structures associated with the inode.
*/
cache_purge(vp);
if (ip->i_devvp) {
vrele(ip->i_devvp);
ip->i_devvp = 0;
}
FREE(vp->v_data, M_ISOFSNODE);
vp->v_data = NULL;
return 0;
}
/*
* Lock an inode. If its already locked, set the WANT bit and sleep.
*/
iso_ilock(ip)
register struct iso_node *ip;
{
while (ip->i_flag & ILOCKED) {
ip->i_flag |= IWANT;
if (ip->i_spare0 == curproc->p_pid)
panic("locking against myself");
ip->i_spare1 = curproc->p_pid;
(void) sleep((caddr_t)ip, PINOD);
}
ip->i_spare1 = 0;
ip->i_spare0 = curproc->p_pid;
ip->i_flag |= ILOCKED;
}
/*
* Unlock an inode. If WANT bit is on, wakeup.
*/
iso_iunlock(ip)
register struct iso_node *ip;
{
if ((ip->i_flag & ILOCKED) == 0)
vprint("iso_iunlock: unlocked inode", ITOV(ip));
ip->i_spare0 = 0;
ip->i_flag &= ~ILOCKED;
if (ip->i_flag&IWANT) {
ip->i_flag &= ~IWANT;
wakeup((caddr_t)ip);
}
}
/*
* File attributes
*/
void
cd9660_defattr(isodir,inop,bp)
struct iso_directory_record *isodir;
struct iso_node *inop;
struct buf *bp;
{
struct buf *bp2 = NULL;
struct iso_mnt *imp;
struct iso_extended_attributes *ap = NULL;
int off;
if (isonum_711(isodir->flags)&2) {
inop->inode.iso_mode = S_IFDIR;
/*
* If we return 2, fts() will assume there are no subdirectories
* (just links for the path and .), so instead we return 1.
*/
inop->inode.iso_links = 1;
} else {
inop->inode.iso_mode = S_IFREG;
inop->inode.iso_links = 1;
}
if (!bp
&& ((imp = inop->i_mnt)->im_flags&ISOFSMNT_EXTATT)
&& (off = isonum_711(isodir->ext_attr_length))) {
iso_blkatoff(inop,-off * imp->logical_block_size,&bp2);
bp = bp2;
}
if (bp) {
ap = (struct iso_extended_attributes *)bp->b_un.b_addr;
if (isonum_711(ap->version) == 1) {
if (!(ap->perm[0]&0x40))
inop->inode.iso_mode |= VEXEC >> 6;
if (!(ap->perm[0]&0x10))
inop->inode.iso_mode |= VREAD >> 6;
if (!(ap->perm[0]&4))
inop->inode.iso_mode |= VEXEC >> 3;
if (!(ap->perm[0]&1))
inop->inode.iso_mode |= VREAD >> 3;
if (!(ap->perm[1]&0x40))
inop->inode.iso_mode |= VEXEC;
if (!(ap->perm[1]&0x10))
inop->inode.iso_mode |= VREAD;
inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */
inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */
} else
ap = NULL;
}
if (!ap) {
inop->inode.iso_mode |= VREAD|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6;
inop->inode.iso_uid = (uid_t)0;
inop->inode.iso_gid = (gid_t)0;
}
if (bp2)
brelse(bp2);
}
/*
* Time stamps
*/
void
cd9660_deftstamp(isodir,inop,bp)
struct iso_directory_record *isodir;
struct iso_node *inop;
struct buf *bp;
{
struct buf *bp2 = NULL;
struct iso_mnt *imp;
struct iso_extended_attributes *ap = NULL;
int off;
if (!bp
&& ((imp = inop->i_mnt)->im_flags&ISOFSMNT_EXTATT)
&& (off = isonum_711(isodir->ext_attr_length))) {
iso_blkatoff(inop,-off * imp->logical_block_size,&bp2);
bp = bp2;
}
if (bp) {
ap = (struct iso_extended_attributes *)bp->b_un.b_addr;
if (isonum_711(ap->version) == 1) {
if (!cd9660_tstamp_conv17(ap->ftime,&inop->inode.iso_atime))
cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_atime);
if (!cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_ctime))
inop->inode.iso_ctime = inop->inode.iso_atime;
if (!cd9660_tstamp_conv17(ap->mtime,&inop->inode.iso_mtime))
inop->inode.iso_mtime = inop->inode.iso_ctime;
} else
ap = NULL;
}
if (!ap) {
cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime);
inop->inode.iso_atime = inop->inode.iso_ctime;
inop->inode.iso_mtime = inop->inode.iso_ctime;
}
if (bp2)
brelse(bp2);
}
int
cd9660_tstamp_conv7(pi,pu)
char *pi;
struct timeval *pu;
{
int i;
int crtime, days;
int y, m, d, hour, minute, second, tz;
y = pi[0] + 1900;
m = pi[1];
d = pi[2];
hour = pi[3];
minute = pi[4];
second = pi[5];
tz = pi[6];
if (y < 1970) {
pu->tv_sec = 0;
pu->tv_usec = 0;
return 0;
} else {
#ifdef ORIGINAL
/* computes day number relative to Sept. 19th,1989 */
/* don't even *THINK* about changing formula. It works! */
days = 367*(y-1980)-7*(y+(m+9)/12)/4-3*((y+(m-9)/7)/100+1)/4+275*m/9+d-100;
#else
/*
* Changed :-) to make it relative to Jan. 1st, 1970
* and to disambiguate negative division
*/
days = 367*(y-1960)-7*(y+(m+9)/12)/4-3*((y+(m+9)/12-1)/100+1)/4+275*m/9+d-239;
#endif
crtime = ((((days * 24) + hour) * 60 + minute) * 60) + second;
/* timezone offset is unreliable on some disks */
if (-48 <= tz && tz <= 52)
crtime -= tz * 15 * 60;
}
pu->tv_sec = crtime;
pu->tv_usec = 0;
return 1;
}
static unsigned
cd9660_chars2ui(begin,len)
unsigned char *begin;
int len;
{
unsigned rc;
for (rc = 0; --len >= 0;) {
rc *= 10;
rc += *begin++ - '0';
}
return rc;
}
int
cd9660_tstamp_conv17(pi,pu)
unsigned char *pi;
struct timeval *pu;
{
unsigned char buf[7];
/* year:"0001"-"9999" -> -1900 */
buf[0] = cd9660_chars2ui(pi,4) - 1900;
/* month: " 1"-"12" -> 1 - 12 */
buf[1] = cd9660_chars2ui(pi + 4,2);
/* day: " 1"-"31" -> 1 - 31 */
buf[2] = cd9660_chars2ui(pi + 6,2);
/* hour: " 0"-"23" -> 0 - 23 */
buf[3] = cd9660_chars2ui(pi + 8,2);
/* minute:" 0"-"59" -> 0 - 59 */
buf[4] = cd9660_chars2ui(pi + 10,2);
/* second:" 0"-"59" -> 0 - 59 */
buf[5] = cd9660_chars2ui(pi + 12,2);
/* difference of GMT */
buf[6] = pi[16];
return cd9660_tstamp_conv7(buf,pu);
}
void
isodirino(inump,isodir,imp)
ino_t *inump;
struct iso_directory_record *isodir;
struct iso_mnt *imp;
{
*inump = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length))
* imp->logical_block_size;
}

144
sys/isofs/cd9660/cd9660_node.h Normal file
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/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_node.h 8.2 (Berkeley) 1/23/94
* $Id: cd9660_node.h,v 1.1 1994/06/08 11:22:52 mycroft Exp $
*/
/*
* Theoretically, directories can be more than 2Gb in length,
* however, in practice this seems unlikely. So, we define
* the type doff_t as a long to keep down the cost of doing
* lookup on a 32-bit machine. If you are porting to a 64-bit
* architecture, you should make doff_t the same as off_t.
*/
#define doff_t long
typedef struct {
struct timespec iso_atime; /* time of last access */
struct timespec iso_mtime; /* time of last modification */
struct timespec iso_ctime; /* time file changed */
u_short iso_mode; /* files access mode and type */
uid_t iso_uid; /* owner user id */
gid_t iso_gid; /* owner group id */
short iso_links; /* links of file */
dev_t iso_rdev; /* Major/Minor number for special */
} ISO_RRIP_INODE;
#ifdef ISODEVMAP
/*
* FOr device# (major,minor) translation table
*/
struct iso_dnode {
struct iso_dnode *d_chain[2]; /* hash chain, MUST be first */
dev_t i_dev; /* device where dnode resides */
ino_t i_number; /* the identity of the inode */
dev_t d_dev; /* device # for translation */
};
#define d_forw d_chain[0]
#define d_back d_chain[1]
#endif
struct iso_node {
struct iso_node *i_chain[2]; /* hash chain, MUST be first */
struct vnode *i_vnode; /* vnode associated with this inode */
struct vnode *i_devvp; /* vnode for block I/O */
u_long i_flag; /* see below */
dev_t i_dev; /* device where inode resides */
ino_t i_number; /* the identity of the inode */
/* we use the actual starting block of the file */
struct iso_mnt *i_mnt; /* filesystem associated with this inode */
struct lockf *i_lockf; /* head of byte-level lock list */
doff_t i_endoff; /* end of useful stuff in directory */
doff_t i_diroff; /* offset in dir, where we found last entry */
doff_t i_offset; /* offset of free space in directory */
ino_t i_ino; /* inode number of found directory */
long i_spare0;
long i_spare1;
long iso_extent; /* extent of file */
long i_size;
long iso_start; /* actual start of data of file (may be different */
/* from iso_extent, if file has extended attributes) */
ISO_RRIP_INODE inode;
};
#define i_forw i_chain[0]
#define i_back i_chain[1]
/* flags */
#define ILOCKED 0x0001 /* inode is locked */
#define IWANT 0x0002 /* some process waiting on lock */
#define IACC 0x0020 /* inode access time to be updated */
#define VTOI(vp) ((struct iso_node *)(vp)->v_data)
#define ITOV(ip) ((ip)->i_vnode)
#define ISO_ILOCK(ip) iso_ilock(ip)
#define ISO_IUNLOCK(ip) iso_iunlock(ip)
/*
* Prototypes for ISOFS vnode operations
*/
int cd9660_lookup __P((struct vop_lookup_args *));
int cd9660_open __P((struct vop_open_args *));
int cd9660_close __P((struct vop_close_args *));
int cd9660_access __P((struct vop_access_args *));
int cd9660_getattr __P((struct vop_getattr_args *));
int cd9660_read __P((struct vop_read_args *));
int cd9660_ioctl __P((struct vop_ioctl_args *));
int cd9660_select __P((struct vop_select_args *));
int cd9660_mmap __P((struct vop_mmap_args *));
int cd9660_seek __P((struct vop_seek_args *));
int cd9660_readdir __P((struct vop_readdir_args *));
int cd9660_abortop __P((struct vop_abortop_args *));
int cd9660_inactive __P((struct vop_inactive_args *));
int cd9660_reclaim __P((struct vop_reclaim_args *));
int cd9660_bmap __P((struct vop_bmap_args *));
int cd9660_lock __P((struct vop_lock_args *));
int cd9660_unlock __P((struct vop_unlock_args *));
int cd9660_strategy __P((struct vop_strategy_args *));
int cd9660_print __P((struct vop_print_args *));
int cd9660_islocked __P((struct vop_islocked_args *));
void cd9660_defattr __P((struct iso_directory_record *,
struct iso_node *, struct buf *));
void cd9660_deftstamp __P((struct iso_directory_record *,
struct iso_node *, struct buf *));
#ifdef ISODEVMAP
struct iso_dnode *iso_dmap __P((dev_t, ino_t, int));
void iso_dunmap __P((dev_t));
#endif

689
sys/isofs/cd9660/cd9660_rrip.c Normal file
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/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_rrip.c 8.2 (Berkeley) 1/23/94
* $Id: cd9660_rrip.c,v 1.1 1994/06/08 11:22:53 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/namei.h>
#include <sys/buf.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/kernel.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
#include <isofs/cd9660/cd9660_rrip.h>
#include <isofs/cd9660/iso_rrip.h>
/*
* POSIX file attribute
*/
static int
cd9660_rrip_attr(p,ana)
ISO_RRIP_ATTR *p;
ISO_RRIP_ANALYZE *ana;
{
ana->inop->inode.iso_mode = isonum_731(p->mode_l);
ana->inop->inode.iso_uid = (uid_t)isonum_731(p->uid_l);
ana->inop->inode.iso_gid = (gid_t)isonum_731(p->gid_l);
ana->inop->inode.iso_links = isonum_731(p->links_l);
ana->fields &= ~ISO_SUSP_ATTR;
return ISO_SUSP_ATTR;
}
static void
cd9660_rrip_defattr(isodir,ana)
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *ana;
{
/* But this is a required field! */
printf("RRIP without PX field?\n");
cd9660_defattr(isodir,ana->inop,NULL);
}
/*
* Symbolic Links
*/
static int
cd9660_rrip_slink(p,ana)
ISO_RRIP_SLINK *p;
ISO_RRIP_ANALYZE *ana;
{
register ISO_RRIP_SLINK_COMPONENT *pcomp;
register ISO_RRIP_SLINK_COMPONENT *pcompe;
int len, wlen, cont;
char *outbuf, *inbuf;
pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
len = *ana->outlen;
outbuf = ana->outbuf;
cont = ana->cont;
/*
* Gathering a Symbolic name from each component with path
*/
for (;
pcomp < pcompe;
pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
+ isonum_711(pcomp->clen))) {
if (!cont) {
if (len < ana->maxlen) {
len++;
*outbuf++ = '/';
}
}
cont = 0;
inbuf = "..";
wlen = 0;
switch (*pcomp->cflag) {
case ISO_SUSP_CFLAG_CURRENT:
/* Inserting Current */
wlen = 1;
break;
case ISO_SUSP_CFLAG_PARENT:
/* Inserting Parent */
wlen = 2;
break;
case ISO_SUSP_CFLAG_ROOT:
/* Inserting slash for ROOT */
/* start over from beginning(?) */
outbuf -= len;
len = 0;
break;
case ISO_SUSP_CFLAG_VOLROOT:
/* Inserting a mount point i.e. "/cdrom" */
/* same as above */
outbuf -= len;
len = 0;
inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
wlen = strlen(inbuf);
break;
case ISO_SUSP_CFLAG_HOST:
/* Inserting hostname i.e. "kurt.tools.de" */
inbuf = hostname;
wlen = hostnamelen;
break;
case ISO_SUSP_CFLAG_CONTINUE:
cont = 1;
/* fall thru */
case 0:
/* Inserting component */
wlen = isonum_711(pcomp->clen);
inbuf = pcomp->name;
break;
default:
printf("RRIP with incorrect flags?");
wlen = ana->maxlen + 1;
break;
}
if (len + wlen > ana->maxlen) {
/* indicate error to caller */
ana->cont = 1;
ana->fields = 0;
ana->outbuf -= *ana->outlen;
*ana->outlen = 0;
return 0;
}
bcopy(inbuf,outbuf,wlen);
outbuf += wlen;
len += wlen;
}
ana->outbuf = outbuf;
*ana->outlen = len;
ana->cont = cont;
if (!isonum_711(p->flags)) {
ana->fields &= ~ISO_SUSP_SLINK;
return ISO_SUSP_SLINK;
}
return 0;
}
/*
* Alternate name
*/
static int
cd9660_rrip_altname(p,ana)
ISO_RRIP_ALTNAME *p;
ISO_RRIP_ANALYZE *ana;
{
char *inbuf;
int wlen;
int cont;
inbuf = "..";
wlen = 0;
cont = 0;
switch (*p->flags) {
case ISO_SUSP_CFLAG_CURRENT:
/* Inserting Current */
wlen = 1;
break;
case ISO_SUSP_CFLAG_PARENT:
/* Inserting Parent */
wlen = 2;
break;
case ISO_SUSP_CFLAG_HOST:
/* Inserting hostname i.e. "kurt.tools.de" */
inbuf = hostname;
wlen = hostnamelen;
break;
case ISO_SUSP_CFLAG_CONTINUE:
cont = 1;
/* fall thru */
case 0:
/* Inserting component */
wlen = isonum_711(p->h.length) - 5;
inbuf = (char *)p + 5;
break;
default:
printf("RRIP with incorrect NM flags?\n");
wlen = ana->maxlen + 1;
break;
}
if ((*ana->outlen += wlen) > ana->maxlen) {
/* treat as no name field */
ana->fields &= ~ISO_SUSP_ALTNAME;
ana->outbuf -= *ana->outlen - wlen;
*ana->outlen = 0;
return 0;
}
bcopy(inbuf,ana->outbuf,wlen);
ana->outbuf += wlen;
if (!cont) {
ana->fields &= ~ISO_SUSP_ALTNAME;
return ISO_SUSP_ALTNAME;
}
return 0;
}
static void
cd9660_rrip_defname(isodir,ana)
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *ana;
{
strcpy(ana->outbuf,"..");
switch (*isodir->name) {
default:
isofntrans(isodir->name,isonum_711(isodir->name_len),
ana->outbuf,ana->outlen,
1,isonum_711(isodir->flags)&4);
break;
case 0:
*ana->outlen = 1;
break;
case 1:
*ana->outlen = 2;
break;
}
}
/*
* Parent or Child Link
*/
static int
cd9660_rrip_pclink(p,ana)
ISO_RRIP_CLINK *p;
ISO_RRIP_ANALYZE *ana;
{
*ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
}
/*
* Relocated directory
*/
static int
cd9660_rrip_reldir(p,ana)
ISO_RRIP_RELDIR *p;
ISO_RRIP_ANALYZE *ana;
{
/* special hack to make caller aware of RE field */
*ana->outlen = 0;
ana->fields = 0;
return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
}
static int
cd9660_rrip_tstamp(p,ana)
ISO_RRIP_TSTAMP *p;
ISO_RRIP_ANALYZE *ana;
{
unsigned char *ptime;
ptime = p->time;
/* Check a format of time stamp (7bytes/17bytes) */
if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
ptime += 7;
if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime);
ptime += 7;
} else
bzero(&ana->inop->inode.iso_mtime,sizeof(struct timeval));
if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime);
ptime += 7;
} else
ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime);
else
ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
} else {
if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
ptime += 17;
if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
ptime += 17;
} else
bzero(&ana->inop->inode.iso_mtime,sizeof(struct timeval));
if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
ptime += 17;
} else
ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
else
ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
}
ana->fields &= ~ISO_SUSP_TSTAMP;
return ISO_SUSP_TSTAMP;
}
static void
cd9660_rrip_deftstamp(isodir,ana)
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *ana;
{
cd9660_deftstamp(isodir,ana->inop,NULL);
}
/*
* POSIX device modes
*/
static int
cd9660_rrip_device(p,ana)
ISO_RRIP_DEVICE *p;
ISO_RRIP_ANALYZE *ana;
{
unsigned high, low;
high = isonum_733(p->dev_t_high_l);
low = isonum_733(p->dev_t_low_l);
if (high == 0)
ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
else
ana->inop->inode.iso_rdev = makedev(high, minor(low));
ana->fields &= ~ISO_SUSP_DEVICE;
return ISO_SUSP_DEVICE;
}
/*
* Flag indicating
*/
static int
cd9660_rrip_idflag(p,ana)
ISO_RRIP_IDFLAG *p;
ISO_RRIP_ANALYZE *ana;
{
ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
/* special handling of RE field */
if (ana->fields&ISO_SUSP_RELDIR)
return cd9660_rrip_reldir(p,ana);
return ISO_SUSP_IDFLAG;
}
/*
* Continuation pointer
*/
static int
cd9660_rrip_cont(p,ana)
ISO_RRIP_CONT *p;
ISO_RRIP_ANALYZE *ana;
{
ana->iso_ce_blk = isonum_733(p->location);
ana->iso_ce_off = isonum_733(p->offset);
ana->iso_ce_len = isonum_733(p->length);
return ISO_SUSP_CONT;
}
/*
* System Use end
*/
static int
cd9660_rrip_stop(p,ana)
ISO_SUSP_HEADER *p;
ISO_RRIP_ANALYZE *ana;
{
return ISO_SUSP_STOP;
}
/*
* Extension reference
*/
static int
cd9660_rrip_extref(p,ana)
ISO_RRIP_EXTREF *p;
ISO_RRIP_ANALYZE *ana;
{
if (isonum_711(p->len_id) != 10
|| bcmp((char *)p + 8,"RRIP_1991A",10)
|| isonum_711(p->version) != 1)
return 0;
ana->fields &= ~ISO_SUSP_EXTREF;
return ISO_SUSP_EXTREF;
}
typedef struct {
char type[2];
int (*func)();
void (*func2)();
int result;
} RRIP_TABLE;
static int
cd9660_rrip_loop(isodir,ana,table)
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *ana;
RRIP_TABLE *table;
{
register RRIP_TABLE *ptable;
register ISO_SUSP_HEADER *phead;
register ISO_SUSP_HEADER *pend;
struct buf *bp = NULL;
int i;
char *pwhead;
int result;
/*
* Note: If name length is odd,
* it will be padding 1 byte after the name
*/
pwhead = isodir->name + isonum_711(isodir->name_len);
if (!(isonum_711(isodir->name_len)&1))
pwhead++;
/* If it's not the '.' entry of the root dir obey SP field */
if (*isodir->name != 0
|| isonum_733(isodir->extent) != ana->imp->root_extent)
pwhead += ana->imp->rr_skip;
else
pwhead += ana->imp->rr_skip0;
phead = (ISO_SUSP_HEADER *)pwhead;
pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
result = 0;
while (1) {
ana->iso_ce_len = 0;
/*
* Note: "pend" should be more than one SUSP header
*/
while (pend >= phead + 1) {
if (isonum_711(phead->version) == 1) {
for (ptable = table; ptable->func; ptable++) {
if (*phead->type == *ptable->type
&& phead->type[1] == ptable->type[1]) {
result |= ptable->func(phead,ana);
break;
}
}
if (!ana->fields)
break;
}
if (result&ISO_SUSP_STOP) {
result &= ~ISO_SUSP_STOP;
break;
}
/* plausibility check */
if (isonum_711(phead->length) < sizeof(*phead))
break;
/*
* move to next SUSP
* Hopefully this works with newer versions, too
*/
phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
}
if (ana->fields && ana->iso_ce_len) {
if (ana->iso_ce_blk >= ana->imp->volume_space_size
|| ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
|| bread(ana->imp->im_devvp,
ana->iso_ce_blk * ana->imp->logical_block_size / DEV_BSIZE,
ana->imp->logical_block_size,NOCRED,&bp))
/* what to do now? */
break;
phead = (ISO_SUSP_HEADER *)(bp->b_un.b_addr + ana->iso_ce_off);
pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
} else
break;
}
if (bp)
brelse(bp);
/*
* If we don't find the Basic SUSP stuffs, just set default value
* (attribute/time stamp)
*/
for (ptable = table; ptable->func2; ptable++)
if (!(ptable->result&result))
ptable->func2(isodir,ana);
return result;
}
/*
* Get Attributes.
*/
static RRIP_TABLE rrip_table_analyze[] = {
{ "PX", cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
{ "TF", cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
{ "PN", cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
{ "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
{ "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
{ "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
{ "", 0, 0, 0 }
};
int
cd9660_rrip_analyze(isodir,inop,imp)
struct iso_directory_record *isodir;
struct iso_node *inop;
struct iso_mnt *imp;
{
ISO_RRIP_ANALYZE analyze;
analyze.inop = inop;
analyze.imp = imp;
analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
}
/*
* Get Alternate Name.
*/
static RRIP_TABLE rrip_table_getname[] = {
{ "NM", cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
{ "CL", cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
{ "PL", cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
{ "RE", cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
{ "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
{ "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
{ "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
{ "", 0, 0, 0 }
};
int
cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
struct iso_directory_record *isodir;
char *outbuf;
u_short *outlen;
ino_t *inump;
struct iso_mnt *imp;
{
ISO_RRIP_ANALYZE analyze;
RRIP_TABLE *tab;
analyze.outbuf = outbuf;
analyze.outlen = outlen;
analyze.maxlen = NAME_MAX;
analyze.inump = inump;
analyze.imp = imp;
analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
*outlen = 0;
tab = rrip_table_getname;
if (*isodir->name == 0
|| *isodir->name == 1) {
cd9660_rrip_defname(isodir,&analyze);
analyze.fields &= ~ISO_SUSP_ALTNAME;
tab++;
}
return cd9660_rrip_loop(isodir,&analyze,tab);
}
/*
* Get Symbolic Link.
*/
static RRIP_TABLE rrip_table_getsymname[] = {
{ "SL", cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
{ "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
{ "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
{ "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
{ "", 0, 0, 0 }
};
int
cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
struct iso_directory_record *isodir;
char *outbuf;
u_short *outlen;
struct iso_mnt *imp;
{
ISO_RRIP_ANALYZE analyze;
analyze.outbuf = outbuf;
analyze.outlen = outlen;
*outlen = 0;
analyze.maxlen = MAXPATHLEN;
analyze.cont = 1; /* don't start with a slash */
analyze.imp = imp;
analyze.fields = ISO_SUSP_SLINK;
return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
}
static RRIP_TABLE rrip_table_extref[] = {
{ "ER", cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
{ "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
{ "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
{ "", 0, 0, 0 }
};
/*
* Check for Rock Ridge Extension and return offset of its fields.
* Note: We insist on the ER field.
*/
int
cd9660_rrip_offset(isodir,imp)
struct iso_directory_record *isodir;
struct iso_mnt *imp;
{
ISO_RRIP_OFFSET *p;
ISO_RRIP_ANALYZE analyze;
imp->rr_skip0 = 0;
p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
if (bcmp(p,"SP\7\1\276\357",6)) {
/* Maybe, it's a CDROM XA disc? */
imp->rr_skip0 = 15;
p = (ISO_RRIP_OFFSET *)((char *)p + 15);
if (bcmp(p,"SP\7\1\276\357",6))
return -1;
}
analyze.imp = imp;
analyze.fields = ISO_SUSP_EXTREF;
if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
return -1;
return isonum_711(p->skip);
}

147
sys/isofs/cd9660/cd9660_rrip.h Normal file
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@ -0,0 +1,147 @@
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_rrip.h 8.1 (Berkeley) 1/21/94
* $Id: cd9660_rrip.h,v 1.1 1994/06/08 11:22:54 mycroft Exp $
*/
typedef struct {
char type [ISODCL ( 0, 1)];
unsigned char length [ISODCL ( 2, 2)]; /* 711 */
unsigned char version [ISODCL ( 3, 3)];
} ISO_SUSP_HEADER;
typedef struct {
ISO_SUSP_HEADER h;
char mode_l [ISODCL ( 4, 7)]; /* 731 */
char mode_m [ISODCL ( 8, 11)]; /* 732 */
char links_l [ISODCL ( 12, 15)]; /* 731 */
char links_m [ISODCL ( 16, 19)]; /* 732 */
char uid_l [ISODCL ( 20, 23)]; /* 731 */
char uid_m [ISODCL ( 24, 27)]; /* 732 */
char gid_l [ISODCL ( 28, 31)]; /* 731 */
char gid_m [ISODCL ( 32, 35)]; /* 732 */
} ISO_RRIP_ATTR;
typedef struct {
ISO_SUSP_HEADER h;
char dev_t_high_l [ISODCL ( 4, 7)]; /* 731 */
char dev_t_high_m [ISODCL ( 8, 11)]; /* 732 */
char dev_t_low_l [ISODCL ( 12, 15)]; /* 731 */
char dev_t_low_m [ISODCL ( 16, 19)]; /* 732 */
} ISO_RRIP_DEVICE;
#define ISO_SUSP_CFLAG_CONTINUE 0x01
#define ISO_SUSP_CFLAG_CURRENT 0x02
#define ISO_SUSP_CFLAG_PARENT 0x04
#define ISO_SUSP_CFLAG_ROOT 0x08
#define ISO_SUSP_CFLAG_VOLROOT 0x10
#define ISO_SUSP_CFLAG_HOST 0x20
typedef struct {
u_char cflag [ISODCL ( 1, 1)];
u_char clen [ISODCL ( 2, 2)];
u_char name [0];
} ISO_RRIP_SLINK_COMPONENT;
#define ISO_RRIP_SLSIZ 2
typedef struct {
ISO_SUSP_HEADER h;
u_char flags [ISODCL ( 4, 4)];
u_char component [ISODCL ( 5, 5)];
} ISO_RRIP_SLINK;
typedef struct {
ISO_SUSP_HEADER h;
char flags [ISODCL ( 4, 4)];
} ISO_RRIP_ALTNAME;
typedef struct {
ISO_SUSP_HEADER h;
char dir_loc [ISODCL ( 4, 11)]; /* 733 */
} ISO_RRIP_CLINK;
typedef struct {
ISO_SUSP_HEADER h;
char dir_loc [ISODCL ( 4, 11)]; /* 733 */
} ISO_RRIP_PLINK;
typedef struct {
ISO_SUSP_HEADER h;
} ISO_RRIP_RELDIR;
#define ISO_SUSP_TSTAMP_FORM17 0x80
#define ISO_SUSP_TSTAMP_FORM7 0x00
#define ISO_SUSP_TSTAMP_CREAT 0x01
#define ISO_SUSP_TSTAMP_MODIFY 0x02
#define ISO_SUSP_TSTAMP_ACCESS 0x04
#define ISO_SUSP_TSTAMP_ATTR 0x08
#define ISO_SUSP_TSTAMP_BACKUP 0x10
#define ISO_SUSP_TSTAMP_EXPIRE 0x20
#define ISO_SUSP_TSTAMP_EFFECT 0x40
typedef struct {
ISO_SUSP_HEADER h;
unsigned char flags [ISODCL ( 4, 4)];
unsigned char time [ISODCL ( 5, 5)];
} ISO_RRIP_TSTAMP;
typedef struct {
ISO_SUSP_HEADER h;
unsigned char flags [ISODCL ( 4, 4)];
} ISO_RRIP_IDFLAG;
typedef struct {
ISO_SUSP_HEADER h;
char len_id [ISODCL ( 4, 4)];
char len_des [ISODCL ( 5, 5)];
char len_src [ISODCL ( 6, 6)];
char version [ISODCL ( 7, 7)];
} ISO_RRIP_EXTREF;
typedef struct {
ISO_SUSP_HEADER h;
char check [ISODCL ( 4, 5)];
char skip [ISODCL ( 6, 6)];
} ISO_RRIP_OFFSET;
typedef struct {
ISO_SUSP_HEADER h;
char location [ISODCL ( 4, 11)];
char offset [ISODCL ( 12, 19)];
char length [ISODCL ( 20, 27)];
} ISO_RRIP_CONT;

237
sys/isofs/cd9660/cd9660_util.c Normal file
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@ -0,0 +1,237 @@
/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_util.c 8.1 (Berkeley) 1/21/94
* $Id: cd9660_util.c,v 1.1 1994/06/08 11:22:55 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/resourcevar.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <miscfs/specfs/specdev.h> /* XXX */
#include <miscfs/fifofs/fifo.h> /* XXX */
#include <sys/malloc.h>
#include <sys/dir.h>
#include <isofs/cd9660/iso.h>
#ifdef __notanymore__
int
isonum_711 (p)
unsigned char *p;
{
return (*p);
}
int
isonum_712 (p)
signed char *p;
{
return (*p);
}
int
isonum_721 (p)
unsigned char *p;
{
/* little endian short */
#if BYTE_ORDER != LITTLE_ENDIAN
printf ("isonum_721 called on non little-endian machine!\n");
#endif
return *(short *)p;
}
int
isonum_722 (p)
unsigned char *p;
{
/* big endian short */
#if BYTE_ORDER != BIG_ENDIAN
printf ("isonum_722 called on non big-endian machine!\n");
#endif
return *(short *)p;
}
int
isonum_723 (p)
unsigned char *p;
{
#if BYTE_ORDER == BIG_ENDIAN
return isonum_722 (p + 2);
#elif BYTE_ORDER == LITTLE_ENDIAN
return isonum_721 (p);
#else
printf ("isonum_723 unsupported byte order!\n");
return 0;
#endif
}
int
isonum_731 (p)
unsigned char *p;
{
/* little endian long */
#if BYTE_ORDER != LITTLE_ENDIAN
printf ("isonum_731 called on non little-endian machine!\n");
#endif
return *(long *)p;
}
int
isonum_732 (p)
unsigned char *p;
{
/* big endian long */
#if BYTE_ORDER != BIG_ENDIAN
printf ("isonum_732 called on non big-endian machine!\n");
#endif
return *(long *)p;
}
int
isonum_733 (p)
unsigned char *p;
{
#if BYTE_ORDER == BIG_ENDIAN
return isonum_732 (p + 4);
#elif BYTE_ORDER == LITTLE_ENDIAN
return isonum_731 (p);
#else
printf ("isonum_733 unsupported byte order!\n");
return 0;
#endif
}
#endif /* __notanymore__ */
/*
* translate and compare a filename
* Note: Version number plus ';' may be omitted.
*/
int
isofncmp(unsigned char *fn,int fnlen,unsigned char *isofn,int isolen)
{
int i, j;
char c;
while (--fnlen >= 0) {
if (--isolen < 0)
return *fn;
if ((c = *isofn++) == ';') {
switch (*fn++) {
default:
return *--fn;
case 0:
return 0;
case ';':
break;
}
for (i = 0; --fnlen >= 0; i = i * 10 + *fn++ - '0') {
if (*fn < '0' || *fn > '9') {
return -1;
}
}
for (j = 0; --isolen >= 0; j = j * 10 + *isofn++ - '0');
return i - j;
}
if (c != *fn) {
if (c >= 'A' && c <= 'Z') {
if (c + ('a' - 'A') != *fn) {
if (*fn >= 'a' && *fn <= 'z')
return *fn - ('a' - 'A') - c;
else
return *fn - c;
}
} else
return *fn - c;
}
fn++;
}
if (isolen > 0) {
switch (*isofn) {
default:
return -1;
case '.':
if (isofn[1] != ';')
return -1;
case ';':
return 0;
}
}
return 0;
}
/*
* translate a filename
*/
void
isofntrans(unsigned char *infn,int infnlen,
unsigned char *outfn,unsigned short *outfnlen,
int original,int assoc)
{
int fnidx = 0;
if (assoc) {
*outfn++ = ASSOCCHAR;
fnidx++;
}
for (; fnidx < infnlen; fnidx++) {
char c = *infn++;
if (!original && c >= 'A' && c <= 'Z')
*outfn++ = c + ('a' - 'A');
else if (!original && c == '.' && *infn == ';')
break;
else if (!original && c == ';')
break;
else
*outfn++ = c;
}
*outfnlen = fnidx;
}

687
sys/isofs/cd9660/cd9660_vfsops.c Normal file
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@ -0,0 +1,687 @@
/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cd9660_vfsops.c 8.3 (Berkeley) 1/31/94
* $Id: cd9660_vfsops.c,v 1.1 1994/06/08 11:22:57 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <miscfs/specfs/specdev.h>
#include <sys/mount.h>
#include <sys/buf.h>
#include <sys/file.h>
#include <sys/dkbad.h>
#include <sys/disklabel.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
extern int enodev ();
struct vfsops cd9660_vfsops = {
MOUNT_CD9660,
cd9660_mount,
cd9660_start,
cd9660_unmount,
cd9660_root,
cd9660_quotactl,
cd9660_statfs,
cd9660_sync,
cd9660_vget,
cd9660_fhtovp,
cd9660_vptofh,
cd9660_init,
};
/*
* Called by vfs_mountroot when iso is going to be mounted as root.
*
* Name is updated by mount(8) after booting.
*/
#define ROOTNAME "root_device"
static iso_mountfs();
cd9660_mountroot()
{
register struct mount *mp;
extern struct vnode *rootvp;
struct proc *p = curproc; /* XXX */
struct iso_mnt *imp;
register struct fs *fs;
u_int size;
int error;
struct iso_args args;
/*
* Get vnodes for swapdev and rootdev.
*/
if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp))
panic("cd9660_mountroot: can't setup bdevvp's");
mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK);
bzero((char *)mp, (u_long)sizeof(struct mount));
mp->mnt_op = &cd9660_vfsops;
mp->mnt_flag = MNT_RDONLY;
LIST_INIT(&mp->mnt_vnodelist);
args.flags = ISOFSMNT_ROOT;
if (error = iso_mountfs(rootvp, mp, p, &args)) {
free(mp, M_MOUNT);
return (error);
}
if (error = vfs_lock(mp)) {
(void)cd9660_unmount(mp, 0, p);
free(mp, M_MOUNT);
return (error);
}
TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
mp->mnt_flag |= MNT_ROOTFS;
mp->mnt_vnodecovered = NULLVP;
imp = VFSTOISOFS(mp);
bzero(imp->im_fsmnt, sizeof(imp->im_fsmnt));
imp->im_fsmnt[0] = '/';
bcopy((caddr_t)imp->im_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname,
MNAMELEN);
(void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
&size);
bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
(void) cd9660_statfs(mp, &mp->mnt_stat, p);
vfs_unlock(mp);
return (0);
}
/*
* VFS Operations.
*
* mount system call
*/
cd9660_mount(mp, path, data, ndp, p)
register struct mount *mp;
char *path;
caddr_t data;
struct nameidata *ndp;
struct proc *p;
{
struct vnode *devvp;
struct iso_args args;
u_int size;
int error;
struct iso_mnt *imp;
if (error = copyin(data, (caddr_t)&args, sizeof (struct iso_args)))
return (error);
if ((mp->mnt_flag & MNT_RDONLY) == 0)
return (EROFS);
/*
* If updating, check whether changing from read-only to
* read/write; if there is no device name, that's all we do.
*/
if (mp->mnt_flag & MNT_UPDATE) {
imp = VFSTOISOFS(mp);
if (args.fspec == 0)
return (vfs_export(mp, &imp->im_export, &args.export));
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible block device.
*/
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
if (error = namei(ndp))
return (error);
devvp = ndp->ni_vp;
if (devvp->v_type != VBLK) {
vrele(devvp);
return ENOTBLK;
}
if (major(devvp->v_rdev) >= nblkdev) {
vrele(devvp);
return ENXIO;
}
if ((mp->mnt_flag & MNT_UPDATE) == 0)
error = iso_mountfs(devvp, mp, p, &args);
else {
if (devvp != imp->im_devvp)
error = EINVAL; /* needs translation */
else
vrele(devvp);
}
if (error) {
vrele(devvp);
return error;
}
imp = VFSTOISOFS(mp);
(void) copyinstr(path, imp->im_fsmnt, sizeof(imp->im_fsmnt)-1, &size);
bzero(imp->im_fsmnt + size, sizeof(imp->im_fsmnt) - size);
bcopy((caddr_t)imp->im_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname,
MNAMELEN);
(void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
&size);
bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
(void) cd9660_statfs(mp, &mp->mnt_stat, p);
return 0;
}
/*
* Common code for mount and mountroot
*/
static iso_mountfs(devvp, mp, p, argp)
register struct vnode *devvp;
struct mount *mp;
struct proc *p;
struct iso_args *argp;
{
register struct iso_mnt *isomp = (struct iso_mnt *)0;
struct buf *bp = NULL;
dev_t dev = devvp->v_rdev;
caddr_t base, space;
int havepart = 0, blks;
int error = EINVAL, i, size;
int needclose = 0;
int ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
extern struct vnode *rootvp;
int j;
int iso_bsize;
int iso_blknum;
struct iso_volume_descriptor *vdp;
struct iso_primary_descriptor *pri;
struct iso_directory_record *rootp;
int logical_block_size;
if (!ronly)
return EROFS;
/*
* Disallow multiple mounts of the same device.
* Disallow mounting of a device that is currently in use
* (except for root, which might share swap device for miniroot).
* Flush out any old buffers remaining from a previous use.
*/
if (error = vfs_mountedon(devvp))
return error;
if (vcount(devvp) > 1 && devvp != rootvp)
return EBUSY;
if (error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0))
return (error);
if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p))
return error;
needclose = 1;
/* This is the "logical sector size". The standard says this
* should be 2048 or the physical sector size on the device,
* whichever is greater. For now, we'll just use a constant.
*/
iso_bsize = ISO_DEFAULT_BLOCK_SIZE;
for (iso_blknum = 16; iso_blknum < 100; iso_blknum++) {
if (error = bread (devvp, btodb(iso_blknum * iso_bsize),
iso_bsize, NOCRED, &bp))
goto out;
vdp = (struct iso_volume_descriptor *)bp->b_un.b_addr;
if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) {
error = EINVAL;
goto out;
}
if (isonum_711 (vdp->type) == ISO_VD_END) {
error = EINVAL;
goto out;
}
if (isonum_711 (vdp->type) == ISO_VD_PRIMARY)
break;
brelse(bp);
}
if (isonum_711 (vdp->type) != ISO_VD_PRIMARY) {
error = EINVAL;
goto out;
}
pri = (struct iso_primary_descriptor *)vdp;
logical_block_size = isonum_723 (pri->logical_block_size);
if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE
|| (logical_block_size & (logical_block_size - 1)) != 0) {
error = EINVAL;
goto out;
}
rootp = (struct iso_directory_record *)pri->root_directory_record;
isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK);
bzero((caddr_t)isomp, sizeof *isomp);
isomp->logical_block_size = logical_block_size;
isomp->volume_space_size = isonum_733 (pri->volume_space_size);
bcopy (rootp, isomp->root, sizeof isomp->root);
isomp->root_extent = isonum_733 (rootp->extent);
isomp->root_size = isonum_733 (rootp->size);
isomp->im_bmask = logical_block_size - 1;
isomp->im_bshift = 0;
while ((1 << isomp->im_bshift) < isomp->logical_block_size)
isomp->im_bshift++;
bp->b_flags |= B_AGE;
brelse(bp);
bp = NULL;
mp->mnt_data = (qaddr_t)isomp;
mp->mnt_stat.f_fsid.val[0] = (long)dev;
mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_CD9660);
mp->mnt_maxsymlinklen = 0;
mp->mnt_flag |= MNT_LOCAL;
isomp->im_mountp = mp;
isomp->im_dev = dev;
isomp->im_devvp = devvp;
devvp->v_specflags |= SI_MOUNTEDON;
/* Check the Rock Ridge Extention support */
if (!(argp->flags & ISOFSMNT_NORRIP)) {
if (error = bread (isomp->im_devvp,
(isomp->root_extent + isonum_711(rootp->ext_attr_length))
* isomp->logical_block_size / DEV_BSIZE,
isomp->logical_block_size,NOCRED,&bp))
goto out;
rootp = (struct iso_directory_record *)bp->b_un.b_addr;
if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) {
argp->flags |= ISOFSMNT_NORRIP;
} else {
argp->flags &= ~ISOFSMNT_GENS;
}
/*
* The contents are valid,
* but they will get reread as part of another vnode, so...
*/
bp->b_flags |= B_AGE;
brelse(bp);
bp = NULL;
}
isomp->im_flags = argp->flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS|ISOFSMNT_EXTATT);
switch (isomp->im_flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS)) {
default:
isomp->iso_ftype = ISO_FTYPE_DEFAULT;
break;
case ISOFSMNT_GENS|ISOFSMNT_NORRIP:
isomp->iso_ftype = ISO_FTYPE_9660;
break;
case 0:
isomp->iso_ftype = ISO_FTYPE_RRIP;
break;
}
return 0;
out:
if (bp)
brelse(bp);
if (needclose)
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
if (isomp) {
free((caddr_t)isomp, M_ISOFSMNT);
mp->mnt_data = (qaddr_t)0;
}
return error;
}
/*
* Make a filesystem operational.
* Nothing to do at the moment.
*/
/* ARGSUSED */
cd9660_start(mp, flags, p)
struct mount *mp;
int flags;
struct proc *p;
{
return 0;
}
/*
* unmount system call
*/
int
cd9660_unmount(mp, mntflags, p)
struct mount *mp;
int mntflags;
struct proc *p;
{
register struct iso_mnt *isomp;
int i, error, ronly, flags = 0;
if (mntflags & MNT_FORCE) {
extern int doforce;
if (!doforce || (mp->mnt_flag & MNT_ROOTFS))
return (EINVAL);
flags |= FORCECLOSE;
}
#if 0
mntflushbuf(mp, 0);
if (mntinvalbuf(mp))
return EBUSY;
#endif
if (error = vflush(mp, NULLVP, flags))
return (error);
isomp = VFSTOISOFS(mp);
#ifdef ISODEVMAP
if (isomp->iso_ftype == ISO_FTYPE_RRIP)
iso_dunmap(isomp->im_dev);
#endif
isomp->im_devvp->v_specflags &= ~SI_MOUNTEDON;
error = VOP_CLOSE(isomp->im_devvp, FREAD, NOCRED, p);
vrele(isomp->im_devvp);
free((caddr_t)isomp, M_ISOFSMNT);
mp->mnt_data = (qaddr_t)0;
mp->mnt_flag &= ~MNT_LOCAL;
return (error);
}
/*
* Return root of a filesystem
*/
cd9660_root(mp, vpp)
struct mount *mp;
struct vnode **vpp;
{
register struct iso_node *ip;
struct iso_node tip, *nip;
struct vnode tvp;
int error;
struct iso_mnt *imp = VFSTOISOFS (mp);
struct iso_directory_record *dp;
tvp.v_mount = mp;
tvp.v_data = &tip;
ip = VTOI(&tvp);
ip->i_vnode = &tvp;
ip->i_dev = imp->im_dev;
ip->i_diroff = 0;
dp = (struct iso_directory_record *)imp->root;
isodirino(&ip->i_number,dp,imp);
/*
* With RRIP we must use the `.' entry of the root directory.
* Simply tell iget, that it's a relocated directory.
*/
error = iso_iget(ip,ip->i_number,
imp->iso_ftype == ISO_FTYPE_RRIP,
&nip,dp);
if (error)
return error;
*vpp = ITOV(nip);
return 0;
}
/*
* Do operations associated with quotas, not supported
*/
/* ARGSUSED */
int
cd9660_quotactl(mp, cmd, uid, arg, p)
struct mount *mp;
int cmd;
uid_t uid;
caddr_t arg;
struct proc *p;
{
return (EOPNOTSUPP);
}
/*
* Get file system statistics.
*/
cd9660_statfs(mp, sbp, p)
struct mount *mp;
register struct statfs *sbp;
struct proc *p;
{
register struct iso_mnt *isomp;
register struct fs *fs;
isomp = VFSTOISOFS(mp);
#ifdef COMPAT_09
sbp->f_type = 5;
#else
sbp->f_type = 0;
#endif
sbp->f_bsize = isomp->logical_block_size;
sbp->f_iosize = sbp->f_bsize; /* XXX */
sbp->f_blocks = isomp->volume_space_size;
sbp->f_bfree = 0; /* total free blocks */
sbp->f_bavail = 0; /* blocks free for non superuser */
sbp->f_files = 0; /* total files */
sbp->f_ffree = 0; /* free file nodes */
if (sbp != &mp->mnt_stat) {
bcopy((caddr_t)mp->mnt_stat.f_mntonname,
(caddr_t)&sbp->f_mntonname[0], MNAMELEN);
bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
(caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
}
strncpy(&sbp->f_fstypename[0], mp->mnt_op->vfs_name, MFSNAMELEN);
sbp->f_fstypename[MFSNAMELEN] = '\0';
/* Use the first spare for flags: */
sbp->f_spare[0] = isomp->im_flags;
return 0;
}
/* ARGSUSED */
int
cd9660_sync(mp, waitfor, cred, p)
struct mount *mp;
int waitfor;
struct ucred *cred;
struct proc *p;
{
return (0);
}
/*
* Flat namespace lookup.
* Currently unsupported.
*/
/* ARGSUSED */
int
cd9660_vget(mp, ino, vpp)
struct mount *mp;
ino_t ino;
struct vnode **vpp;
{
return (EOPNOTSUPP);
}
/*
* File handle to vnode
*
* Have to be really careful about stale file handles:
* - check that the inode number is in range
* - call iget() to get the locked inode
* - check for an unallocated inode (i_mode == 0)
* - check that the generation number matches
*/
struct ifid {
ushort ifid_len;
ushort ifid_pad;
int ifid_ino;
long ifid_start;
};
/* ARGSUSED */
int
cd9660_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp)
register struct mount *mp;
struct fid *fhp;
struct mbuf *nam;
struct vnode **vpp;
int *exflagsp;
struct ucred **credanonp;
{
struct vnode tvp;
int error;
int lbn, off;
struct ifid *ifhp;
struct iso_mnt *imp;
struct buf *bp;
struct iso_directory_record *dirp;
struct iso_node tip, *ip, *nip;
struct netcred *np;
imp = VFSTOISOFS (mp);
ifhp = (struct ifid *)fhp;
#ifdef ISOFS_DBG
printf("fhtovp: ino %d, start %ld\n",
ifhp->ifid_ino, ifhp->ifid_start);
#endif
np = vfs_export_lookup(mp, &imp->im_export, nam);
if (np == NULL)
return (EACCES);
lbn = iso_lblkno(imp, ifhp->ifid_ino);
if (lbn >= imp->volume_space_size) {
printf("fhtovp: lbn exceed volume space %d\n", lbn);
return (ESTALE);
}
off = iso_blkoff(imp, ifhp->ifid_ino);
if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) {
printf("fhtovp: crosses block boundary %d\n",
off + ISO_DIRECTORY_RECORD_SIZE);
return (ESTALE);
}
error = bread(imp->im_devvp, btodb(lbn * imp->logical_block_size),
imp->logical_block_size, NOCRED, &bp);
if (error) {
printf("fhtovp: bread error %d\n",error);
brelse(bp);
return (error);
}
dirp = (struct iso_directory_record *)(bp->b_un.b_addr + off);
if (off + isonum_711(dirp->length) > imp->logical_block_size) {
brelse(bp);
printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n",
off+isonum_711(dirp->length), off,
isonum_711(dirp->length));
return (ESTALE);
}
if (isonum_733(dirp->extent) + isonum_711(dirp->ext_attr_length) !=
ifhp->ifid_start) {
brelse(bp);
printf("fhtovp: file start miss %d vs %d\n",
isonum_733(dirp->extent)+isonum_711(dirp->ext_attr_length),
ifhp->ifid_start);
return (ESTALE);
}
brelse(bp);
ip = &tip;
tvp.v_mount = mp;
tvp.v_data = ip;
ip->i_vnode = &tvp;
ip->i_dev = imp->im_dev;
if (error = iso_iget(ip, ifhp->ifid_ino, 0, &nip, dirp)) {
*vpp = NULLVP;
printf("fhtovp: failed to get inode\n");
return (error);
}
ip = nip;
/*
* XXX need generation number?
*/
if (ip->inode.iso_mode == 0) {
iso_iput(ip);
*vpp = NULLVP;
printf("fhtovp: inode mode == 0\n");
return (ESTALE);
}
*vpp = ITOV(ip);
*exflagsp = np->netc_exflags;
*credanonp = &np->netc_anon;
return 0;
}
/*
* Vnode pointer to File handle
*/
/* ARGSUSED */
cd9660_vptofh(vp, fhp)
struct vnode *vp;
struct fid *fhp;
{
register struct iso_node *ip = VTOI(vp);
register struct ifid *ifhp;
register struct iso_mnt *mp = ip->i_mnt;
ifhp = (struct ifid *)fhp;
ifhp->ifid_len = sizeof(struct ifid);
ifhp->ifid_ino = ip->i_number;
ifhp->ifid_start = ip->iso_start;
#ifdef ISOFS_DBG
printf("vptofh: ino %d, start %ld\n",
ifhp->ifid_ino,ifhp->ifid_start);
#endif
return 0;
}

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sys/isofs/cd9660/cd9660_vnops.c Normal file
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sys/isofs/cd9660/iso.h Normal file
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/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)iso.h 8.2 (Berkeley) 1/23/94
* $Id: iso.h,v 1.1 1994/06/08 11:22:59 mycroft Exp $
*/
#define ISODCL(from, to) (to - from + 1)
struct iso_volume_descriptor {
char type[ISODCL(1,1)]; /* 711 */
char id[ISODCL(2,6)];
char version[ISODCL(7,7)];
char data[ISODCL(8,2048)];
};
/* volume descriptor types */
#define ISO_VD_PRIMARY 1
#define ISO_VD_END 255
#define ISO_STANDARD_ID "CD001"
#define ISO_ECMA_ID "CDW01"
struct iso_primary_descriptor {
char type [ISODCL ( 1, 1)]; /* 711 */
char id [ISODCL ( 2, 6)];
char version [ISODCL ( 7, 7)]; /* 711 */
char unused1 [ISODCL ( 8, 8)];
char system_id [ISODCL ( 9, 40)]; /* achars */
char volume_id [ISODCL ( 41, 72)]; /* dchars */
char unused2 [ISODCL ( 73, 80)];
char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
char unused3 [ISODCL ( 89, 120)];
char volume_set_size [ISODCL (121, 124)]; /* 723 */
char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
char logical_block_size [ISODCL (129, 132)]; /* 723 */
char path_table_size [ISODCL (133, 140)]; /* 733 */
char type_l_path_table [ISODCL (141, 144)]; /* 731 */
char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
char type_m_path_table [ISODCL (149, 152)]; /* 732 */
char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
char volume_set_id [ISODCL (191, 318)]; /* dchars */
char publisher_id [ISODCL (319, 446)]; /* achars */
char preparer_id [ISODCL (447, 574)]; /* achars */
char application_id [ISODCL (575, 702)]; /* achars */
char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
char file_structure_version [ISODCL (882, 882)]; /* 711 */
char unused4 [ISODCL (883, 883)];
char application_data [ISODCL (884, 1395)];
char unused5 [ISODCL (1396, 2048)];
};
#define ISO_DEFAULT_BLOCK_SIZE 2048
struct iso_directory_record {
char length [ISODCL (1, 1)]; /* 711 */
char ext_attr_length [ISODCL (2, 2)]; /* 711 */
unsigned char extent [ISODCL (3, 10)]; /* 733 */
unsigned char size [ISODCL (11, 18)]; /* 733 */
char date [ISODCL (19, 25)]; /* 7 by 711 */
char flags [ISODCL (26, 26)];
char file_unit_size [ISODCL (27, 27)]; /* 711 */
char interleave [ISODCL (28, 28)]; /* 711 */
char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
char name_len [ISODCL (33, 33)]; /* 711 */
char name [0];
};
/* can't take sizeof(iso_directory_record), because of possible alignment
of the last entry (34 instead of 33) */
#define ISO_DIRECTORY_RECORD_SIZE 33
struct iso_extended_attributes {
unsigned char owner [ISODCL (1, 4)]; /* 723 */
unsigned char group [ISODCL (5, 8)]; /* 723 */
unsigned char perm [ISODCL (9, 10)]; /* 9.5.3 */
char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
char recfmt [ISODCL (79, 79)]; /* 711 */
char recattr [ISODCL (80, 80)]; /* 711 */
unsigned char reclen [ISODCL (81, 84)]; /* 723 */
char system_id [ISODCL (85, 116)]; /* achars */
char system_use [ISODCL (117, 180)];
char version [ISODCL (181, 181)]; /* 711 */
char len_esc [ISODCL (182, 182)]; /* 711 */
char reserved [ISODCL (183, 246)];
unsigned char len_au [ISODCL (247, 250)]; /* 723 */
};
/* CD-ROM Format type */
enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP, ISO_FTYPE_ECMA };
#ifndef ISOFSMNT_ROOT
#define ISOFSMNT_ROOT 0
#endif
struct iso_mnt {
int im_flags;
struct mount *im_mountp;
dev_t im_dev;
struct vnode *im_devvp;
int logical_block_size;
int im_bshift;
int im_bmask;
int volume_space_size;
char im_fsmnt[50];
struct netexport im_export;
char root[ISODCL (157, 190)];
int root_extent;
int root_size;
enum ISO_FTYPE iso_ftype;
int rr_skip;
int rr_skip0;
};
#define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data))
#define iso_blkoff(imp, loc) ((loc) & (imp)->im_bmask)
#define iso_lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
#define iso_blksize(imp, ip, lbn) ((imp)->logical_block_size)
#define iso_lblktosize(imp, blk) ((blk) << (imp)->im_bshift)
int cd9660_mount __P((struct mount *,
char *, caddr_t, struct nameidata *, struct proc *));
int cd9660_start __P((struct mount *, int, struct proc *));
int cd9660_unmount __P((struct mount *, int, struct proc *));
int cd9660_root __P((struct mount *, struct vnode **));
int cd9660_quotactl __P((struct mount *, int, uid_t, caddr_t, struct proc *));
int cd9660_statfs __P((struct mount *, struct statfs *, struct proc *));
int cd9660_sync __P((struct mount *, int, struct ucred *, struct proc *));
int cd9660_vget __P((struct mount *, ino_t, struct vnode **));
int cd9660_fhtovp __P((struct mount *, struct fid *, struct mbuf *,
struct vnode **, int *, struct ucred **));
int cd9660_vptofh __P((struct vnode *, struct fid *));
int cd9660_init __P(());
struct iso_node;
int iso_blkatoff __P((struct iso_node *ip, long offset, struct buf **bpp));
int iso_iget __P((struct iso_node *xp, ino_t ino, int relocated,
struct iso_node **ipp, struct iso_directory_record *isodir));
int iso_iput __P((struct iso_node *ip));
int iso_ilock __P((struct iso_node *ip));
int iso_iunlock __P((struct iso_node *ip));
int cd9660_mountroot __P((void));
extern int (**cd9660_vnodeop_p)();
extern inline int
isonum_711(p)
unsigned char *p;
{
return *p;
}
extern inline int
isonum_712(p)
char *p;
{
return *p;
}
extern inline int
isonum_721(p)
unsigned char *p;
{
return *p|((char)p[1] << 8);
}
extern inline int
isonum_722(p)
unsigned char *p;
{
return ((char)*p << 8)|p[1];
}
extern inline int
isonum_723(p)
unsigned char *p;
{
return isonum_721(p);
}
extern inline int
isonum_731(p)
unsigned char *p;
{
return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
}
extern inline int
isonum_732(p)
unsigned char *p;
{
return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3];
}
extern inline int
isonum_733(p)
unsigned char *p;
{
return isonum_731(p);
}
int isofncmp __P((unsigned char *, int, unsigned char *, int));
void isofntrans __P((unsigned char *, int, unsigned char *, unsigned short *,
int, int));
/*
* Associated files have a leading '='.
*/
#define ASSOCCHAR '='

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/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)iso_rrip.h 8.2 (Berkeley) 1/23/94
* $Id: iso_rrip.h,v 1.1 1994/06/08 11:23:01 mycroft Exp $
*/
/*
* Analyze function flag (similar to RR field bits)
*/
#define ISO_SUSP_ATTR 0x0001
#define ISO_SUSP_DEVICE 0x0002
#define ISO_SUSP_SLINK 0x0004
#define ISO_SUSP_ALTNAME 0x0008
#define ISO_SUSP_CLINK 0x0010
#define ISO_SUSP_PLINK 0x0020
#define ISO_SUSP_RELDIR 0x0040
#define ISO_SUSP_TSTAMP 0x0080
#define ISO_SUSP_IDFLAG 0x0100
#define ISO_SUSP_EXTREF 0x0200
#define ISO_SUSP_CONT 0x0400
#define ISO_SUSP_OFFSET 0x0800
#define ISO_SUSP_STOP 0x1000
#define ISO_SUSP_UNKNOWN 0x8000
typedef struct {
struct iso_node *inop;
int fields; /* interesting fields in this analysis */
daddr_t iso_ce_blk; /* block of continuation area */
off_t iso_ce_off; /* offset of continuation area */
int iso_ce_len; /* length of continuation area */
struct iso_mnt *imp; /* mount structure */
ino_t *inump; /* inode number pointer */
char *outbuf; /* name/symbolic link output area */
u_short *outlen; /* length of above */
u_short maxlen; /* maximum length of above */
int cont; /* continuation of above */
} ISO_RRIP_ANALYZE;
int cd9660_rrip_analyze __P((struct iso_directory_record *isodir,
struct iso_node *inop, struct iso_mnt *imp));
int cd9660_rrip_getname __P((struct iso_directory_record *isodir,
char *outbuf, u_short *outlen,
ino_t *inump, struct iso_mnt *imp));
int cd9660_rrip_getsymname __P((struct iso_directory_record *isodir,
char *outbuf, u_short *outlen,
struct iso_mnt *imp));
int cd9660_rrip_offset __P((struct iso_directory_record *isodir,
struct iso_mnt *imp));