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freebsd-nq/sys/isofs/cd9660/cd9660_vnops.c
KATO Takenori 81bca6ddae Clustered read and write are switched at mount-option level. 
1. Clustered I/O is switched by the MNT_NOCLUSTERR and MNT_NOCLUSTERW
   bits of the mnt_flag.  The sysctl variables, vfs.foo.doclusterread
   and vfs.foo.doclusterwrite are deleted.  Only mount option can
   control clustered I/O from userland.
2. When foofs_mount mounts block device, foofs_mount checks D_CLUSTERR
   and D_CLUSTERW bits of the d_flags member in the block device switch
   table.  If D_NOCLUSTERR / D_NOCLUSTERW are set, MNT_NOCLUSTERR /
   MNT_NOCLUSTERW bits will be set.  In this case, MNT_NOCLUSTERR and
   MNT_NOCLUSTERW cannot be cleared from userland.
3. Vnode driver disables both clustered read and write.
4. Union filesystem disables clutered write.

Reviewed by:	bde
1997-09-27 13:40:20 +00:00

1168 lines
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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.
*
* @(#)cd9660_vnops.c 8.19 (Berkeley) 5/27/95
* $Id: cd9660_vnops.c,v 1.39 1997/09/21 04:22:40 dyson Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/kernel.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/buf.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <miscfs/specfs/specdev.h>
#include <miscfs/fifofs/fifo.h>
#include <sys/malloc.h>
#include <sys/dirent.h>
#include <sys/unistd.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
#include <isofs/cd9660/iso_rrip.h>
static int cd9660_setattr __P((struct vop_setattr_args *));
static int cd9660_open __P((struct vop_open_args *));
static int cd9660_close __P((struct vop_close_args *));
static int cd9660_access __P((struct vop_access_args *));
static int cd9660_getattr __P((struct vop_getattr_args *));
static int cd9660_read __P((struct vop_read_args *));
static int cd9660_ioctl __P((struct vop_ioctl_args *));
static int cd9660_mmap __P((struct vop_mmap_args *));
static int cd9660_seek __P((struct vop_seek_args *));
struct isoreaddir;
static int iso_uiodir __P((struct isoreaddir *idp, struct dirent *dp,
off_t off));
static int iso_shipdir __P((struct isoreaddir *idp));
static int cd9660_readdir __P((struct vop_readdir_args *));
static int cd9660_readlink __P((struct vop_readlink_args *ap));
static int cd9660_abortop __P((struct vop_abortop_args *));
static int cd9660_lock __P((struct vop_lock_args *));
static int cd9660_unlock __P((struct vop_unlock_args *));
static int cd9660_strategy __P((struct vop_strategy_args *));
static int cd9660_print __P((struct vop_print_args *));
static int cd9660_islocked __P((struct vop_islocked_args *));
/*
* Setattr call. Only allowed for block and character special devices.
*/
int
cd9660_setattr(ap)
struct vop_setattr_args /* {
struct vnodeop_desc *a_desc;
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL)
return (EROFS);
if (vap->va_size != (u_quad_t)VNOVAL) {
switch (vp->v_type) {
case VDIR:
return (EISDIR);
case VLNK:
case VREG:
return (EROFS);
case VCHR:
case VBLK:
case VSOCK:
case VFIFO:
return (0);
}
}
return (0);
}
/*
* Open called.
*
* Nothing to do.
*/
/* ARGSUSED */
static int
cd9660_open(ap)
struct vop_open_args /* {
struct vnode *a_vp;
int a_mode;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
return (0);
}
/*
* Close called
*
* Update the times on the inode on writeable file systems.
*/
/* ARGSUSED */
static int
cd9660_close(ap)
struct vop_close_args /* {
struct vnode *a_vp;
int a_fflag;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
return (0);
}
/*
* Check mode permission on inode pointer. Mode is READ, WRITE or EXEC.
* The mode is shifted to select the owner/group/other fields. The
* super user is granted all permissions.
*/
/* ARGSUSED */
static int
cd9660_access(ap)
struct vop_access_args /* {
struct vnode *a_vp;
int a_mode;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
struct iso_node *ip = VTOI(vp);
struct ucred *cred = ap->a_cred;
mode_t mask, mode = ap->a_mode;
gid_t *gp;
int i;
/*
* Disallow write attempts unless the file is a socket,
* fifo, or a block or character device resident on the
* file system.
*/
if (mode & VWRITE) {
switch (vp->v_type) {
case VDIR:
case VLNK:
case VREG:
return (EROFS);
}
}
/* User id 0 always gets access. */
if (cred->cr_uid == 0)
return (0);
mask = 0;
/* Otherwise, check the owner. */
if (cred->cr_uid == ip->inode.iso_uid) {
if (mode & VEXEC)
mask |= S_IXUSR;
if (mode & VREAD)
mask |= S_IRUSR;
if (mode & VWRITE)
mask |= S_IWUSR;
return ((ip->inode.iso_mode & mask) == mask ? 0 : EACCES);
}
/* Otherwise, check the groups. */
for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
if (ip->inode.iso_gid == *gp) {
if (mode & VEXEC)
mask |= S_IXGRP;
if (mode & VREAD)
mask |= S_IRGRP;
if (mode & VWRITE)
mask |= S_IWGRP;
return ((ip->inode.iso_mode & mask) == mask ?
0 : EACCES);
}
/* Otherwise, check everyone else. */
if (mode & VEXEC)
mask |= S_IXOTH;
if (mode & VREAD)
mask |= S_IROTH;
if (mode & VWRITE)
mask |= S_IWOTH;
return ((ip->inode.iso_mode & mask) == mask ? 0 : EACCES);
}
static int
cd9660_getattr(ap)
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
register struct vattr *vap = ap->a_vap;
register struct iso_node *ip = VTOI(vp);
vap->va_fsid = ip->i_dev;
vap->va_fileid = ip->i_number;
vap->va_mode = ip->inode.iso_mode;
vap->va_nlink = ip->inode.iso_links;
vap->va_uid = ip->inode.iso_uid;
vap->va_gid = ip->inode.iso_gid;
vap->va_atime = ip->inode.iso_atime;
vap->va_mtime = ip->inode.iso_mtime;
vap->va_ctime = ip->inode.iso_ctime;
vap->va_rdev = ip->inode.iso_rdev;
vap->va_size = (u_quad_t) ip->i_size;
if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) {
struct vop_readlink_args rdlnk;
struct iovec aiov;
struct uio auio;
char *cp;
MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK);
aiov.iov_base = cp;
aiov.iov_len = MAXPATHLEN;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = 0;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_procp = ap->a_p;
auio.uio_resid = MAXPATHLEN;
rdlnk.a_uio = &auio;
rdlnk.a_vp = ap->a_vp;
rdlnk.a_cred = ap->a_cred;
if (cd9660_readlink(&rdlnk) == 0)
vap->va_size = MAXPATHLEN - auio.uio_resid;
FREE(cp, M_TEMP);
}
vap->va_flags = 0;
vap->va_gen = 1;
vap->va_blocksize = ip->i_mnt->logical_block_size;
vap->va_bytes = (u_quad_t) ip->i_size;
vap->va_type = vp->v_type;
vap->va_filerev = 0;
return (0);
}
/*
* Vnode op for reading.
*/
static int
cd9660_read(ap)
struct vop_read_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
struct ucred *a_cred;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
register struct uio *uio = ap->a_uio;
register struct iso_node *ip = VTOI(vp);
register struct iso_mnt *imp;
struct buf *bp;
daddr_t lbn, rablock;
off_t diff;
int rasize, error = 0;
long size, n, on;
if (uio->uio_resid == 0)
return (0);
if (uio->uio_offset < 0)
return (EINVAL);
ip->i_flag |= IN_ACCESS;
imp = ip->i_mnt;
do {
lbn = lblkno(imp, uio->uio_offset);
on = blkoff(imp, uio->uio_offset);
n = min((u_int)(imp->logical_block_size - on),
uio->uio_resid);
diff = (off_t)ip->i_size - uio->uio_offset;
if (diff <= 0)
return (0);
if (diff < n)
n = diff;
size = blksize(imp, ip, lbn);
rablock = lbn + 1;
if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
if (lblktosize(imp, rablock) <= ip->i_size)
error = cluster_read(vp, (off_t)ip->i_size,
lbn, size, NOCRED, uio->uio_resid,
(ap->a_ioflag >> 16), &bp);
else
error = bread(vp, lbn, size, NOCRED, &bp);
} else {
if (vp->v_lastr + 1 == lbn &&
lblktosize(imp, rablock) < ip->i_size) {
rasize = blksize(imp, ip, rablock);
error = breadn(vp, lbn, size, &rablock,
&rasize, 1, NOCRED, &bp);
} else
error = bread(vp, lbn, size, NOCRED, &bp);
}
vp->v_lastr = lbn;
n = min(n, size - bp->b_resid);
if (error) {
brelse(bp);
return (error);
}
error = uiomove(bp->b_data + on, (int)n, uio);
brelse(bp);
} while (error == 0 && uio->uio_resid > 0 && n != 0);
return (error);
}
/* ARGSUSED */
static int
cd9660_ioctl(ap)
struct vop_ioctl_args /* {
struct vnode *a_vp;
u_long a_command;
caddr_t a_data;
int a_fflag;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
printf("You did ioctl for isofs !!\n");
return (ENOTTY);
}
/*
* Mmap a file
*
* NB Currently unsupported.
*/
/* ARGSUSED */
static int
cd9660_mmap(ap)
struct vop_mmap_args /* {
struct vnode *a_vp;
int a_fflags;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
return (EINVAL);
}
/*
* Seek on a file
*
* Nothing to do, so just return.
*/
/* ARGSUSED */
static int
cd9660_seek(ap)
struct vop_seek_args /* {
struct vnode *a_vp;
off_t a_oldoff;
off_t a_newoff;
struct ucred *a_cred;
} */ *ap;
{
return (0);
}
/*
* Structure for reading directories
*/
struct isoreaddir {
struct dirent saveent;
struct dirent assocent;
struct dirent current;
off_t saveoff;
off_t assocoff;
off_t curroff;
struct uio *uio;
off_t uio_off;
int eofflag;
u_long *cookies;
int ncookies;
};
int
iso_uiodir(idp,dp,off)
struct isoreaddir *idp;
struct dirent *dp;
off_t off;
{
int error;
dp->d_name[dp->d_namlen] = 0;
dp->d_reclen = GENERIC_DIRSIZ(dp);
if (idp->uio->uio_resid < dp->d_reclen) {
idp->eofflag = 0;
return (-1);
}
if (idp->cookies) {
if (idp->ncookies <= 0) {
idp->eofflag = 0;
return (-1);
}
*idp->cookies++ = off;
--idp->ncookies;
}
if (error = uiomove((caddr_t) dp,dp->d_reclen,idp->uio))
return (error);
idp->uio_off = off;
return (0);
}
int
iso_shipdir(idp)
struct isoreaddir *idp;
{
struct dirent *dp;
int cl, sl, assoc;
int error;
char *cname, *sname;
cl = idp->current.d_namlen;
cname = idp->current.d_name;
assoc = (cl > 1) && (*cname == ASSOCCHAR);
if (assoc) {
cl--;
cname++;
}
dp = &idp->saveent;
sname = dp->d_name;
if (!(sl = dp->d_namlen)) {
dp = &idp->assocent;
sname = dp->d_name + 1;
sl = dp->d_namlen - 1;
}
if (sl > 0) {
if (sl != cl
|| bcmp(sname,cname,sl)) {
if (idp->assocent.d_namlen) {
if (error = iso_uiodir(idp,&idp->assocent,idp->assocoff))
return (error);
idp->assocent.d_namlen = 0;
}
if (idp->saveent.d_namlen) {
if (error = iso_uiodir(idp,&idp->saveent,idp->saveoff))
return (error);
idp->saveent.d_namlen = 0;
}
}
}
idp->current.d_reclen = GENERIC_DIRSIZ(&idp->current);
if (assoc) {
idp->assocoff = idp->curroff;
bcopy(&idp->current,&idp->assocent,idp->current.d_reclen);
} else {
idp->saveoff = idp->curroff;
bcopy(&idp->current,&idp->saveent,idp->current.d_reclen);
}
return (0);
}
/*
* Vnode op for readdir
*/
static int
cd9660_readdir(ap)
struct vop_readdir_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
int *a_eofflag;
int *a_ncookies;
u_long *a_cookies;
} */ *ap;
{
register struct uio *uio = ap->a_uio;
struct isoreaddir *idp;
struct vnode *vdp = ap->a_vp;
struct iso_node *dp;
struct iso_mnt *imp;
struct buf *bp = NULL;
struct iso_directory_record *ep;
int entryoffsetinblock;
doff_t endsearch;
u_long bmask;
int error = 0;
int reclen;
u_short namelen;
int ncookies = 0;
u_long *cookies = NULL;
dp = VTOI(vdp);
imp = dp->i_mnt;
bmask = imp->im_bmask;
MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK);
idp->saveent.d_namlen = idp->assocent.d_namlen = 0;
/*
* XXX
* Is it worth trying to figure out the type?
*/
idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type =
DT_UNKNOWN;
idp->uio = uio;
if (ap->a_ncookies == NULL) {
idp->cookies = NULL;
} else {
/*
* Guess the number of cookies needed.
*/
ncookies = uio->uio_resid / 16;
MALLOC(cookies, u_long *, ncookies * sizeof(u_int), M_TEMP,
M_WAITOK);
idp->cookies = cookies;
idp->ncookies = ncookies;
}
idp->eofflag = 1;
idp->curroff = uio->uio_offset;
if ((entryoffsetinblock = idp->curroff & bmask) &&
(error = VOP_BLKATOFF(vdp, (off_t)idp->curroff, NULL, &bp))) {
FREE(idp, M_TEMP);
return (error);
}
endsearch = dp->i_size;
while (idp->curroff < endsearch) {
/*
* If offset is on a block boundary,
* read the next directory block.
* Release previous if it exists.
*/
if ((idp->curroff & bmask) == 0) {
if (bp != NULL)
brelse(bp);
if (error =
VOP_BLKATOFF(vdp, (off_t)idp->curroff, NULL, &bp))
break;
entryoffsetinblock = 0;
}
/*
* Get pointer to next entry.
*/
ep = (struct iso_directory_record *)
((char *)bp->b_data + entryoffsetinblock);
reclen = isonum_711(ep->length);
if (reclen == 0) {
/* skip to next block, if any */
idp->curroff =
(idp->curroff & ~bmask) + imp->logical_block_size;
continue;
}
if (reclen < ISO_DIRECTORY_RECORD_SIZE) {
error = EINVAL;
/* illegal entry, stop */
break;
}
if (entryoffsetinblock + reclen > imp->logical_block_size) {
error = EINVAL;
/* illegal directory, so stop looking */
break;
}
idp->current.d_namlen = isonum_711(ep->name_len);
if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) {
error = EINVAL;
/* illegal entry, stop */
break;
}
if (isonum_711(ep->flags)&2)
idp->current.d_fileno = isodirino(ep, imp);
else
idp->current.d_fileno = dbtob(bp->b_blkno) +
entryoffsetinblock;
idp->curroff += reclen;
switch (imp->iso_ftype) {
case ISO_FTYPE_RRIP:
cd9660_rrip_getname(ep,idp->current.d_name, &namelen,
&idp->current.d_fileno,imp);
idp->current.d_namlen = (u_char)namelen;
if (idp->current.d_namlen)
error = iso_uiodir(idp,&idp->current,idp->curroff);
break;
default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/
strcpy(idp->current.d_name,"..");
switch (ep->name[0]) {
case 0:
idp->current.d_namlen = 1;
error = iso_uiodir(idp,&idp->current,idp->curroff);
break;
case 1:
idp->current.d_namlen = 2;
error = iso_uiodir(idp,&idp->current,idp->curroff);
break;
default:
isofntrans(ep->name,idp->current.d_namlen,
idp->current.d_name, &namelen,
imp->iso_ftype == ISO_FTYPE_9660,
isonum_711(ep->flags)&4);
idp->current.d_namlen = (u_char)namelen;
if (imp->iso_ftype == ISO_FTYPE_DEFAULT)
error = iso_shipdir(idp);
else
error = iso_uiodir(idp,&idp->current,idp->curroff);
break;
}
}
if (error)
break;
entryoffsetinblock += reclen;
}
if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) {
idp->current.d_namlen = 0;
error = iso_shipdir(idp);
}
if (error < 0)
error = 0;
if (ap->a_ncookies != NULL) {
if (error)
free(cookies, M_TEMP);
else {
/*
* Work out the number of cookies actually used.
*/
*ap->a_ncookies = ncookies - idp->ncookies;
*ap->a_cookies = cookies;
}
}
if (bp)
brelse (bp);
uio->uio_offset = idp->uio_off;
*ap->a_eofflag = idp->eofflag;
FREE(idp, M_TEMP);
return (error);
}
/*
* Return target name of a symbolic link
* Shouldn't we get the parent vnode and read the data from there?
* This could eventually result in deadlocks in cd9660_lookup.
* But otherwise the block read here is in the block buffer two times.
*/
typedef struct iso_directory_record ISODIR;
typedef struct iso_node ISONODE;
typedef struct iso_mnt ISOMNT;
static int
cd9660_readlink(ap)
struct vop_readlink_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
} */ *ap;
{
ISONODE *ip;
ISODIR *dirp;
ISOMNT *imp;
struct buf *bp;
struct uio *uio;
u_short symlen;
int error;
char *symname;
ip = VTOI(ap->a_vp);
imp = ip->i_mnt;
uio = ap->a_uio;
if (imp->iso_ftype != ISO_FTYPE_RRIP)
return (EINVAL);
/*
* Get parents directory record block that this inode included.
*/
error = bread(imp->im_devvp,
(ip->i_number >> imp->im_bshift) <<
(imp->im_bshift - DEV_BSHIFT),
imp->logical_block_size, NOCRED, &bp);
if (error) {
brelse(bp);
return (EINVAL);
}
/*
* Setup the directory pointer for this inode
*/
dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask));
/*
* Just make sure, we have a right one....
* 1: Check not cross boundary on block
*/
if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length)
> (unsigned)imp->logical_block_size) {
brelse(bp);
return (EINVAL);
}
/*
* Now get a buffer
* Abuse a namei buffer for now.
*/
if (uio->uio_segflg == UIO_SYSSPACE)
symname = uio->uio_iov->iov_base;
else
symname = zalloc(namei_zone);
/*
* Ok, we just gathering a symbolic name in SL record.
*/
if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) {
if (uio->uio_segflg != UIO_SYSSPACE)
zfree(namei_zone, symname);
brelse(bp);
return (EINVAL);
}
/*
* Don't forget before you leave from home ;-)
*/
brelse(bp);
/*
* return with the symbolic name to caller's.
*/
if (uio->uio_segflg != UIO_SYSSPACE) {
error = uiomove(symname, symlen, uio);
zfree(namei_zone, symname);
return (error);
}
uio->uio_resid -= symlen;
uio->uio_iov->iov_base += symlen;
uio->uio_iov->iov_len -= symlen;
return (0);
}
/*
* Ufs abort op, called after namei() when a CREATE/DELETE isn't actually
* done. If a buffer has been saved in anticipation of a CREATE, delete it.
*/
static int
cd9660_abortop(ap)
struct vop_abortop_args /* {
struct vnode *a_dvp;
struct componentname *a_cnp;
} */ *ap;
{
if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
zfree(namei_zone, ap->a_cnp->cn_pnbuf);
return (0);
}
/*
* Lock an inode.
*/
static int
cd9660_lock(ap)
struct vop_lock_args /* {
struct vnode *a_vp;
int a_flags;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
return (lockmgr(&VTOI(vp)->i_lock, ap->a_flags, &vp->v_interlock,
ap->a_p));
}
/*
* Unlock an inode.
*/
static int
cd9660_unlock(ap)
struct vop_unlock_args /* {
struct vnode *a_vp;
int a_flags;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
return (lockmgr(&VTOI(vp)->i_lock, ap->a_flags | LK_RELEASE,
&vp->v_interlock, ap->a_p));
}
/*
* Calculate the logical to physical mapping if not done already,
* then call the device strategy routine.
*/
static int
cd9660_strategy(ap)
struct vop_strategy_args /* {
struct buf *a_bp;
} */ *ap;
{
register struct buf *bp = ap->a_bp;
register struct vnode *vp = bp->b_vp;
register struct iso_node *ip;
int error;
ip = VTOI(vp);
if (vp->v_type == VBLK || vp->v_type == VCHR)
panic("cd9660_strategy: spec");
if (bp->b_blkno == bp->b_lblkno) {
if ((error =
VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL, NULL))) {
bp->b_error = error;
bp->b_flags |= B_ERROR;
biodone(bp);
return (error);
}
if ((long)bp->b_blkno == -1)
clrbuf(bp);
}
if ((long)bp->b_blkno == -1) {
biodone(bp);
return (0);
}
vp = ip->i_devvp;
bp->b_dev = vp->v_rdev;
VOCALL (vp->v_op, VOFFSET(vop_strategy), ap);
return (0);
}
/*
* Print out the contents of an inode.
*/
static int
cd9660_print(ap)
struct vop_print_args /* {
struct vnode *a_vp;
} */ *ap;
{
printf("tag VT_ISOFS, isofs vnode\n");
return (0);
}
/*
* Check for a locked inode.
*/
int
cd9660_islocked(ap)
struct vop_islocked_args /* {
struct vnode *a_vp;
} */ *ap;
{
return (lockstatus(&VTOI(ap->a_vp)->i_lock));
}
/*
* Return POSIX pathconf information applicable to cd9660 filesystems.
*/
int
cd9660_pathconf(ap)
struct vop_pathconf_args /* {
struct vnode *a_vp;
int a_name;
register_t *a_retval;
} */ *ap;
{
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = 1;
return (0);
case _PC_NAME_MAX:
if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP)
*ap->a_retval = NAME_MAX;
else
*ap->a_retval = 37;
return (0);
case _PC_PATH_MAX:
*ap->a_retval = PATH_MAX;
return (0);
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
return (0);
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
return (0);
case _PC_NO_TRUNC:
*ap->a_retval = 1;
return (0);
default:
return (EINVAL);
}
/* NOTREACHED */
}
/*
* Global vfs data structures for isofs
*/
#define cd9660_create \
((int (*) __P((struct vop_create_args *)))eopnotsupp)
#define cd9660_mknod ((int (*) __P((struct vop_mknod_args *)))eopnotsupp)
#define cd9660_write ((int (*) __P((struct vop_write_args *)))eopnotsupp)
#ifdef NFS
#define cd9660_lease_check lease_check
#else
#define cd9660_lease_check ((int (*) __P((struct vop_lease_args *)))nullop)
#endif
#define cd9660_poll vop_nopoll
#define cd9660_fsync ((int (*) __P((struct vop_fsync_args *)))nullop)
#define cd9660_remove \
((int (*) __P((struct vop_remove_args *)))eopnotsupp)
#define cd9660_link ((int (*) __P((struct vop_link_args *)))eopnotsupp)
#define cd9660_rename \
((int (*) __P((struct vop_rename_args *)))eopnotsupp)
#define cd9660_mkdir ((int (*) __P((struct vop_mkdir_args *)))eopnotsupp)
#define cd9660_rmdir ((int (*) __P((struct vop_rmdir_args *)))eopnotsupp)
#define cd9660_symlink \
((int (*) __P((struct vop_symlink_args *)))eopnotsupp)
#define cd9660_advlock \
((int (*) __P((struct vop_advlock_args *)))eopnotsupp)
#define cd9660_valloc ((int(*) __P(( \
struct vnode *pvp, \
int mode, \
struct ucred *cred, \
struct vnode **vpp))) eopnotsupp)
#define cd9660_vfree ((int (*) __P((struct vop_vfree_args *)))eopnotsupp)
#define cd9660_truncate \
((int (*) __P((struct vop_truncate_args *)))eopnotsupp)
#define cd9660_update \
((int (*) __P((struct vop_update_args *)))eopnotsupp)
#define cd9660_bwrite \
((int (*) __P((struct vop_bwrite_args *)))eopnotsupp)
/*
* Global vfs data structures for cd9660
*/
vop_t **cd9660_vnodeop_p;
struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = {
{ &vop_default_desc, (vop_t *)vn_default_error },
{ &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, /* lookup */
{ &vop_cachedlookup_desc, (vop_t *)cd9660_lookup }, /* lookup */
{ &vop_create_desc, (vop_t *)cd9660_create }, /* create */
/* XXX: vop_whiteout */
{ &vop_mknod_desc, (vop_t *)cd9660_mknod }, /* mknod */
{ &vop_open_desc, (vop_t *)cd9660_open }, /* open */
{ &vop_close_desc, (vop_t *)cd9660_close }, /* close */
{ &vop_access_desc, (vop_t *)cd9660_access }, /* access */
{ &vop_getattr_desc, (vop_t *)cd9660_getattr }, /* getattr */
{ &vop_setattr_desc, (vop_t *)cd9660_setattr }, /* setattr */
{ &vop_read_desc, (vop_t *)cd9660_read }, /* read */
{ &vop_write_desc, (vop_t *)cd9660_write }, /* write */
{ &vop_lease_desc, (vop_t *)cd9660_lease_check },/* lease */
{ &vop_ioctl_desc, (vop_t *)cd9660_ioctl }, /* ioctl */
{ &vop_poll_desc, (vop_t *)cd9660_poll }, /* poll */
{ &vop_revoke_desc, (vop_t *)cd9660_revoke }, /* revoke */
{ &vop_mmap_desc, (vop_t *)cd9660_mmap }, /* mmap */
{ &vop_fsync_desc, (vop_t *)cd9660_fsync }, /* fsync */
{ &vop_seek_desc, (vop_t *)cd9660_seek }, /* seek */
{ &vop_remove_desc, (vop_t *)cd9660_remove }, /* remove */
{ &vop_link_desc, (vop_t *)cd9660_link }, /* link */
{ &vop_rename_desc, (vop_t *)cd9660_rename }, /* rename */
{ &vop_mkdir_desc, (vop_t *)cd9660_mkdir }, /* mkdir */
{ &vop_rmdir_desc, (vop_t *)cd9660_rmdir }, /* rmdir */
{ &vop_symlink_desc, (vop_t *)cd9660_symlink }, /* symlink */
{ &vop_readdir_desc, (vop_t *)cd9660_readdir }, /* readdir */
{ &vop_readlink_desc, (vop_t *)cd9660_readlink },/* readlink */
{ &vop_abortop_desc, (vop_t *)cd9660_abortop }, /* abortop */
{ &vop_inactive_desc, (vop_t *)cd9660_inactive },/* inactive */
{ &vop_reclaim_desc, (vop_t *)cd9660_reclaim }, /* reclaim */
{ &vop_lock_desc, (vop_t *)cd9660_lock }, /* lock */
{ &vop_unlock_desc, (vop_t *)cd9660_unlock }, /* unlock */
{ &vop_bmap_desc, (vop_t *)cd9660_bmap }, /* bmap */
{ &vop_strategy_desc, (vop_t *)cd9660_strategy },/* strategy */
{ &vop_print_desc, (vop_t *)cd9660_print }, /* print */
{ &vop_islocked_desc, (vop_t *)cd9660_islocked },/* islocked */
{ &vop_pathconf_desc, (vop_t *)cd9660_pathconf },/* pathconf */
{ &vop_advlock_desc, (vop_t *)cd9660_advlock }, /* advlock */
{ &vop_blkatoff_desc, (vop_t *)cd9660_blkatoff },/* blkatoff */
{ &vop_valloc_desc, (vop_t *)cd9660_valloc }, /* valloc */
/* XXX: vop_reallocblks */
{ &vop_vfree_desc, (vop_t *)cd9660_vfree }, /* vfree */
{ &vop_truncate_desc, (vop_t *)cd9660_truncate },/* truncate */
{ &vop_update_desc, (vop_t *)cd9660_update }, /* update */
/* XXX: vop_getpages */
/* XXX: vop_putpages */
{ &vop_bwrite_desc, (vop_t *)vn_bwrite },
{ NULL, NULL }
};
static struct vnodeopv_desc cd9660_vnodeop_opv_desc =
{ &cd9660_vnodeop_p, cd9660_vnodeop_entries };
VNODEOP_SET(cd9660_vnodeop_opv_desc);
/*
* Special device vnode ops
*/
vop_t **cd9660_specop_p;
struct vnodeopv_entry_desc cd9660_specop_entries[] = {
{ &vop_default_desc, (vop_t *)vn_default_error },
{ &vop_lookup_desc, (vop_t *)spec_lookup }, /* lookup */
/* XXX: vop_cachedlookup */
{ &vop_create_desc, (vop_t *)spec_create }, /* create */
/* XXX: vop_whiteout */
{ &vop_mknod_desc, (vop_t *)spec_mknod }, /* mknod */
{ &vop_open_desc, (vop_t *)spec_open }, /* open */
{ &vop_close_desc, (vop_t *)spec_close }, /* close */
{ &vop_access_desc, (vop_t *)cd9660_access }, /* access */
{ &vop_getattr_desc, (vop_t *)cd9660_getattr }, /* getattr */
{ &vop_setattr_desc, (vop_t *)cd9660_setattr }, /* setattr */
{ &vop_read_desc, (vop_t *)spec_read }, /* read */
{ &vop_write_desc, (vop_t *)spec_write }, /* write */
{ &vop_lease_desc, (vop_t *)spec_lease_check }, /* lease */
{ &vop_ioctl_desc, (vop_t *)spec_ioctl }, /* ioctl */
{ &vop_poll_desc, (vop_t *)spec_poll }, /* poll */
{ &vop_revoke_desc, (vop_t *)spec_revoke }, /* revoke */
{ &vop_mmap_desc, (vop_t *)spec_mmap }, /* mmap */
{ &vop_fsync_desc, (vop_t *)spec_fsync }, /* fsync */
{ &vop_seek_desc, (vop_t *)spec_seek }, /* seek */
{ &vop_remove_desc, (vop_t *)spec_remove }, /* remove */
{ &vop_link_desc, (vop_t *)spec_link }, /* link */
{ &vop_rename_desc, (vop_t *)spec_rename }, /* rename */
{ &vop_mkdir_desc, (vop_t *)spec_mkdir }, /* mkdir */
{ &vop_rmdir_desc, (vop_t *)spec_rmdir }, /* rmdir */
{ &vop_symlink_desc, (vop_t *)spec_symlink }, /* symlink */
{ &vop_readdir_desc, (vop_t *)spec_readdir }, /* readdir */
{ &vop_readlink_desc, (vop_t *)spec_readlink }, /* readlink */
{ &vop_abortop_desc, (vop_t *)spec_abortop }, /* abortop */
{ &vop_inactive_desc, (vop_t *)cd9660_inactive },/* inactive */
{ &vop_reclaim_desc, (vop_t *)cd9660_reclaim }, /* reclaim */
{ &vop_lock_desc, (vop_t *)cd9660_lock }, /* lock */
{ &vop_unlock_desc, (vop_t *)cd9660_unlock }, /* unlock */
{ &vop_bmap_desc, (vop_t *)spec_bmap }, /* bmap */
{ &vop_strategy_desc, (vop_t *)spec_strategy }, /* strategy */
{ &vop_print_desc, (vop_t *)cd9660_print }, /* print */
{ &vop_islocked_desc, (vop_t *)cd9660_islocked },/* islocked */
{ &vop_pathconf_desc, (vop_t *)spec_pathconf }, /* pathconf */
{ &vop_advlock_desc, (vop_t *)spec_advlock }, /* advlock */
{ &vop_blkatoff_desc, (vop_t *)spec_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, (vop_t *)spec_valloc }, /* valloc */
/* XXX: vop_reallocblks */
{ &vop_vfree_desc, (vop_t *)spec_vfree }, /* vfree */
{ &vop_truncate_desc, (vop_t *)spec_truncate }, /* truncate */
{ &vop_update_desc, (vop_t *)cd9660_update }, /* update */
/* XXX: vop_getpages */
/* XXX: vop_putpages */
{ &vop_bwrite_desc, (vop_t *)vn_bwrite },
{ NULL, NULL }
};
static struct vnodeopv_desc cd9660_specop_opv_desc =
{ &cd9660_specop_p, cd9660_specop_entries };
VNODEOP_SET(cd9660_specop_opv_desc);
vop_t **cd9660_fifoop_p;
struct vnodeopv_entry_desc cd9660_fifoop_entries[] = {
{ &vop_default_desc, (vop_t *)vn_default_error },
{ &vop_lookup_desc, (vop_t *)fifo_lookup }, /* lookup */
/* XXX: vop_cachedlookup */
{ &vop_create_desc, (vop_t *)fifo_create }, /* create */
/* XXX: vop_whiteout */
{ &vop_mknod_desc, (vop_t *)fifo_mknod }, /* mknod */
{ &vop_open_desc, (vop_t *)fifo_open }, /* open */
{ &vop_close_desc, (vop_t *)fifo_close }, /* close */
{ &vop_access_desc, (vop_t *)cd9660_access }, /* access */
{ &vop_getattr_desc, (vop_t *)cd9660_getattr }, /* getattr */
{ &vop_setattr_desc, (vop_t *)cd9660_setattr }, /* setattr */
{ &vop_read_desc, (vop_t *)fifo_read }, /* read */
{ &vop_write_desc, (vop_t *)fifo_write }, /* write */
{ &vop_lease_desc, (vop_t *)fifo_lease_check }, /* lease */
{ &vop_ioctl_desc, (vop_t *)fifo_ioctl }, /* ioctl */
{ &vop_poll_desc, (vop_t *)fifo_poll }, /* poll */
{ &vop_revoke_desc, (vop_t *)fifo_revoke }, /* revoke */
{ &vop_mmap_desc, (vop_t *)fifo_mmap }, /* mmap */
{ &vop_fsync_desc, (vop_t *)fifo_fsync }, /* fsync */
{ &vop_seek_desc, (vop_t *)fifo_seek }, /* seek */
{ &vop_remove_desc, (vop_t *)fifo_remove }, /* remove */
{ &vop_link_desc, (vop_t *)fifo_link } , /* link */
{ &vop_rename_desc, (vop_t *)fifo_rename }, /* rename */
{ &vop_mkdir_desc, (vop_t *)fifo_mkdir }, /* mkdir */
{ &vop_rmdir_desc, (vop_t *)fifo_rmdir }, /* rmdir */
{ &vop_symlink_desc, (vop_t *)fifo_symlink }, /* symlink */
{ &vop_readdir_desc, (vop_t *)fifo_readdir }, /* readdir */
{ &vop_readlink_desc, (vop_t *)fifo_readlink }, /* readlink */
{ &vop_abortop_desc, (vop_t *)fifo_abortop }, /* abortop */
{ &vop_inactive_desc, (vop_t *)cd9660_inactive },/* inactive */
{ &vop_reclaim_desc, (vop_t *)cd9660_reclaim }, /* reclaim */
{ &vop_lock_desc, (vop_t *)cd9660_lock }, /* lock */
{ &vop_unlock_desc, (vop_t *)cd9660_unlock }, /* unlock */
{ &vop_bmap_desc, (vop_t *)fifo_bmap }, /* bmap */
{ &vop_strategy_desc, (vop_t *)fifo_strategy }, /* strategy */
{ &vop_print_desc, (vop_t *)cd9660_print }, /* print */
{ &vop_islocked_desc, (vop_t *)cd9660_islocked },/* islocked */
{ &vop_pathconf_desc, (vop_t *)fifo_pathconf }, /* pathconf */
{ &vop_advlock_desc, (vop_t *)fifo_advlock }, /* advlock */
{ &vop_blkatoff_desc, (vop_t *)fifo_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, (vop_t *)fifo_valloc }, /* valloc */
/* XXX: vop_reallocpages */
{ &vop_vfree_desc, (vop_t *)fifo_vfree }, /* vfree */
{ &vop_truncate_desc, (vop_t *)fifo_truncate }, /* truncate */
{ &vop_update_desc, (vop_t *)cd9660_update }, /* update */
/* XXX: vop_getpages */
/* XXX: vop_putpages */
{ &vop_bwrite_desc, (vop_t *)vn_bwrite },
{ NULL, NULL }
};
static struct vnodeopv_desc cd9660_fifoop_opv_desc =
{ &cd9660_fifoop_p, cd9660_fifoop_entries };
VNODEOP_SET(cd9660_fifoop_opv_desc);
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