Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/isofs/cd9660/cd9660_vnops.c

1127 lines
28 KiB
C
Raw Blame History

/* $NetBSD: cd9660_vnops.c,v 1.39 1997/05/08 16:20:02 mycroft Exp $ */
/*-
* 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 8.15 (Berkeley) 12/5/94
*/
#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 <sys/malloc.h>
#include <sys/dirent.h>
#include <miscfs/fifofs/fifo.h>
#include <miscfs/genfs/genfs.h>
#include <miscfs/specfs/specdev.h>
#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_extern.h>
#include <isofs/cd9660/cd9660_node.h>
#include <isofs/cd9660/iso_rrip.h>
/*
* 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 __P((struct isoreaddir *, struct dirent *, off_t));
int iso_shipdir __P((struct isoreaddir *));
#if 0
/*
* Mknod vnode call
* Actually remap the device number
*/
int
cd9660_mknod(ndp, vap, cred, p)
struct nameidata *ndp;
struct ucred *cred;
struct vattr *vap;
struct proc *p;
{
#ifndef ISODEVMAP
free(ndp->ni_pnbuf, M_NAMEI);
vput(ndp->ni_dvp);
vput(ndp->ni_vp);
return (EINVAL);
#else
register struct vnode *vp;
struct iso_node *ip;
struct iso_dnode *dp;
int error;
vp = ndp->ni_vp;
ip = VTOI(vp);
if (ip->i_mnt->iso_ftype != ISO_FTYPE_RRIP
|| vap->va_type != vp->v_type
|| (vap->va_type != VCHR && vap->va_type != VBLK)) {
free(ndp->ni_pnbuf, M_NAMEI);
vput(ndp->ni_dvp);
vput(ndp->ni_vp);
return (EINVAL);
}
dp = iso_dmap(ip->i_dev,ip->i_number,1);
if (ip->inode.iso_rdev == vap->va_rdev || vap->va_rdev == VNOVAL) {
/* same as the unmapped one, delete the mapping */
dp->d_next->d_prev = dp->d_prev;
*dp->d_prev = dp->d_next;
FREE(dp, M_CACHE);
} else
/* enter new mapping */
dp->d_dev = vap->va_rdev;
/*
* Remove inode so that it will be reloaded by iget and
* checked to see if it is an alias of an existing entry
* in the inode cache.
*/
vput(vp);
vp->v_type = VNON;
vgone(vp);
return (0);
#endif
}
#endif
/*
* 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.
*/
int
cd9660_access(v)
void *v;
{
struct vop_access_args /* {
struct vnode *a_vp;
int a_mode;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap = v;
struct iso_node *ip = VTOI(ap->a_vp);
return (vaccess(vp->v_type, ip->inode.iso_mode & ALLPERMS,
ip->inode.iso_uid, ip->inode.iso_gid, ap->a_mode, ap->a_cred));
}
int
cd9660_getattr(v)
void *v;
{
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap = v;
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 & ALLPERMS;
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 && vp->v_type == VLNK) {
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;
return (0);
}
#ifdef DEBUG
extern int doclusterread;
#else
#define doclusterread 1
#endif
/* XXX until cluster routines can handle block sizes less than one page */
#define cd9660_doclusterread \
(doclusterread && (ISO_DEFAULT_BLOCK_SIZE >= NBPG))
/*
* Vnode op for reading.
*/
int
cd9660_read(v)
void *v;
{
struct vop_read_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
struct ucred *a_cred;
} */ *ap = v;
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 (cd9660_doclusterread) {
if (lblktosize(imp, rablock) <= ip->i_size)
error = cluster_read(vp, (off_t)ip->i_size,
lbn, size, NOCRED, &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 */
int
cd9660_ioctl(v)
void *v;
{
printf("You did ioctl for isofs !!\n");
return (ENOTTY);
}
/*
* Mmap a file
*
* NB Currently unsupported.
*/
/* ARGSUSED */
int
cd9660_mmap(v)
void *v;
{
return (EINVAL);
}
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 = DIRENT_SIZE(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)) != 0)
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;
if ((assoc = cl > 1 && *cname == ASSOCCHAR)) {
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) {
error = iso_uiodir(idp, &idp->assocent,
idp->assocoff);
if (error)
return (error);
idp->assocent.d_namlen = 0;
}
if (idp->saveent.d_namlen) {
error = iso_uiodir(idp, &idp->saveent,
idp->saveoff);
if (error)
return (error);
idp->saveent.d_namlen = 0;
}
}
}
idp->current.d_reclen = DIRENT_SIZE(&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
*/
int
cd9660_readdir(v)
void *v;
{
struct vop_readdir_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
int *a_eofflag;
u_long *a_cookies;
int a_ncookies;
} */ *ap = v;
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;
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;
idp->eofflag = 1;
idp->cookies = ap->a_cookies;
idp->ncookies = ap->a_ncookies;
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);
error = VOP_BLKATOFF(vdp, (off_t)idp->curroff,
NULL, &bp);
if (error)
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 */
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 (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;
int
cd9660_readlink(v)
void *v;
{
struct vop_readlink_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
} */ *ap = v;
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)
> 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
MALLOC(symname, char *, MAXPATHLEN, M_NAMEI, M_WAITOK);
/*
* 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)
FREE(symname, M_NAMEI);
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);
FREE(symname, M_NAMEI);
return (error);
}
uio->uio_resid -= symlen;
uio->uio_iov->iov_base += symlen;
uio->uio_iov->iov_len -= symlen;
return (0);
}
int
cd9660_link(v)
void *v;
{
struct vop_link_args /* {
struct vnode *a_dvp;
struct vnode *a_vp;
struct componentname *a_cnp;
} */ *ap = v;
VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
vput(ap->a_dvp);
return (EROFS);
}
int
cd9660_symlink(v)
void *v;
{
struct vop_symlink_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
char *a_target;
} */ *ap = v;
VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
vput(ap->a_dvp);
return (EROFS);
}
/*
* Lock an inode.
*/
int
cd9660_lock(v)
void *v;
{
struct vop_lock_args /* {
struct vnode *a_vp;
} */ *ap = v;
register struct vnode *vp = ap->a_vp;
register struct iso_node *ip;
#ifdef DIAGNOSTIC
struct proc *p = curproc; /* XXX */
#endif
start:
while (vp->v_flag & VXLOCK) {
vp->v_flag |= VXWANT;
sleep((caddr_t)vp, PINOD);
}
if (vp->v_tag == VT_NON)
return (ENOENT);
ip = VTOI(vp);
if (ip->i_flag & IN_LOCKED) {
ip->i_flag |= IN_WANTED;
#ifdef DIAGNOSTIC
if (p) {
if (p->p_pid == ip->i_lockholder)
panic("locking against myself");
ip->i_lockwaiter = p->p_pid;
} else
ip->i_lockwaiter = -1;
#endif
(void) sleep((caddr_t)ip, PINOD);
goto start;
}
#ifdef DIAGNOSTIC
ip->i_lockwaiter = 0;
if (ip->i_lockholder != 0)
panic("lockholder (%d) != 0", ip->i_lockholder);
if (p && p->p_pid == 0)
printf("locking by process 0\n");
if (p)
ip->i_lockholder = p->p_pid;
else
ip->i_lockholder = -1;
#endif
ip->i_flag |= IN_LOCKED;
return (0);
}
/*
* Unlock an inode.
*/
int
cd9660_unlock(v)
void *v;
{
struct vop_unlock_args /* {
struct vnode *a_vp;
} */ *ap = v;
register struct iso_node *ip = VTOI(ap->a_vp);
#ifdef DIAGNOSTIC
struct proc *p = curproc; /* XXX */
if ((ip->i_flag & IN_LOCKED) == 0) {
vprint("cd9660_unlock: unlocked inode", ap->a_vp);
panic("cd9660_unlock NOT LOCKED");
}
if (p && p->p_pid != ip->i_lockholder && p->p_pid > -1 &&
ip->i_lockholder > -1/* && lockcount++ < 100*/)
panic("unlocker (%d) != lock holder (%d)",
p->p_pid, ip->i_lockholder);
ip->i_lockholder = 0;
#endif
ip->i_flag &= ~IN_LOCKED;
if (ip->i_flag & IN_WANTED) {
ip->i_flag &= ~IN_WANTED;
wakeup((caddr_t)ip);
}
return (0);
}
/*
* Calculate the logical to physical mapping if not done already,
* then call the device strategy routine.
*/
int
cd9660_strategy(v)
void *v;
{
struct vop_strategy_args /* {
struct buf *a_bp;
} */ *ap = v;
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) {
error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL);
if (error) {
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.
*/
/*ARGSUSED*/
int
cd9660_print(v)
void *v;
{
printf("tag VT_ISOFS, isofs vnode\n");
return (0);
}
/*
* Check for a locked inode.
*/
int
cd9660_islocked(v)
void *v;
{
struct vop_islocked_args /* {
struct vnode *a_vp;
} */ *ap = v;
if (VTOI(ap->a_vp)->i_flag & IN_LOCKED)
return (1);
return (0);
}
/*
* Return POSIX pathconf information applicable to cd9660 filesystems.
*/
int
cd9660_pathconf(v)
void *v;
{
struct vop_pathconf_args /* {
struct vnode *a_vp;
int a_name;
register_t *a_retval;
} */ *ap = v;
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 */
}
/*
* Allow changing the size for special files (and fifos).
*/
int
cd9660_setattr(v)
void *v;
{
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap = v;
struct vattr *vap = ap->a_vap;
struct vnode *vp = ap->a_vp;
/*
* Only size is changeable.
*/
if (vap->va_type != VNON
|| vap->va_nlink != VNOVAL
|| vap->va_fsid != VNOVAL
|| vap->va_fileid != VNOVAL
|| vap->va_blocksize != VNOVAL
|| vap->va_rdev != VNOVAL
|| (int)vap->va_bytes != VNOVAL
|| vap->va_gen != VNOVAL
|| vap->va_flags != 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 EOPNOTSUPP;
if (vap->va_size != VNOVAL
&& vp->v_type != VCHR
&& vp->v_type != VBLK
#ifdef FIFO
&& vp->v_type != VFIFO
#endif
)
return EOPNOTSUPP;
return VOP_TRUNCATE(vp, vap->va_size, 0, ap->a_cred, ap->a_p);
}
/*
* Global vfs data structures for isofs
*/
#define cd9660_create genfs_eopnotsupp
#define cd9660_mknod genfs_eopnotsupp
#define cd9660_write genfs_eopnotsupp
#ifdef NFSSERVER
int lease_check __P((void *));
#define cd9660_lease_check lease_check
#else
#define cd9660_lease_check genfs_nullop
#endif
#define cd9660_fsync genfs_nullop
#define cd9660_remove genfs_eopnotsupp
#define cd9660_rename genfs_eopnotsupp
#define cd9660_mkdir genfs_eopnotsupp
#define cd9660_rmdir genfs_eopnotsupp
#define cd9660_advlock genfs_eopnotsupp
#define cd9660_valloc genfs_eopnotsupp
#define cd9660_vfree genfs_nullop
#define cd9660_truncate genfs_eopnotsupp
#define cd9660_update genfs_nullop
#define cd9660_bwrite genfs_eopnotsupp
/*
* Global vfs data structures for cd9660
*/
int (**cd9660_vnodeop_p) __P((void *));
struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, cd9660_lookup }, /* lookup */
{ &vop_create_desc, cd9660_create }, /* create */
{ &vop_mknod_desc, cd9660_mknod }, /* mknod */
{ &vop_open_desc, cd9660_open }, /* open */
{ &vop_close_desc, cd9660_close }, /* close */
{ &vop_access_desc, cd9660_access }, /* access */
{ &vop_getattr_desc, cd9660_getattr }, /* getattr */
{ &vop_setattr_desc, cd9660_setattr }, /* setattr */
{ &vop_read_desc, cd9660_read }, /* read */
{ &vop_write_desc, cd9660_write }, /* write */
{ &vop_lease_desc, cd9660_lease_check }, /* lease */
{ &vop_ioctl_desc, cd9660_ioctl }, /* ioctl */
{ &vop_poll_desc, cd9660_poll }, /* poll */
{ &vop_mmap_desc, cd9660_mmap }, /* mmap */
{ &vop_fsync_desc, cd9660_fsync }, /* fsync */
{ &vop_seek_desc, cd9660_seek }, /* seek */
{ &vop_remove_desc, cd9660_remove }, /* remove */
{ &vop_link_desc, cd9660_link }, /* link */
{ &vop_rename_desc, cd9660_rename }, /* rename */
{ &vop_mkdir_desc, cd9660_mkdir }, /* mkdir */
{ &vop_rmdir_desc, cd9660_rmdir }, /* rmdir */
{ &vop_symlink_desc, cd9660_symlink }, /* symlink */
{ &vop_readdir_desc, cd9660_readdir }, /* readdir */
{ &vop_readlink_desc, cd9660_readlink }, /* readlink */
{ &vop_abortop_desc, cd9660_abortop }, /* abortop */
{ &vop_inactive_desc, cd9660_inactive }, /* inactive */
{ &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */
{ &vop_lock_desc, cd9660_lock }, /* lock */
{ &vop_unlock_desc, cd9660_unlock }, /* unlock */
{ &vop_bmap_desc, cd9660_bmap }, /* bmap */
{ &vop_strategy_desc, cd9660_strategy }, /* strategy */
{ &vop_print_desc, cd9660_print }, /* print */
{ &vop_islocked_desc, cd9660_islocked }, /* islocked */
{ &vop_pathconf_desc, cd9660_pathconf }, /* pathconf */
{ &vop_advlock_desc, cd9660_advlock }, /* advlock */
{ &vop_blkatoff_desc, cd9660_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, cd9660_valloc }, /* valloc */
{ &vop_vfree_desc, cd9660_vfree }, /* vfree */
{ &vop_truncate_desc, cd9660_truncate }, /* truncate */
{ &vop_update_desc, cd9660_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
};
struct vnodeopv_desc cd9660_vnodeop_opv_desc =
{ &cd9660_vnodeop_p, cd9660_vnodeop_entries };
/*
* Special device vnode ops
*/
int (**cd9660_specop_p) __P((void *));
struct vnodeopv_entry_desc cd9660_specop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, spec_lookup }, /* lookup */
{ &vop_create_desc, spec_create }, /* create */
{ &vop_mknod_desc, spec_mknod }, /* mknod */
{ &vop_open_desc, spec_open }, /* open */
{ &vop_close_desc, spec_close }, /* close */
{ &vop_access_desc, cd9660_access }, /* access */
{ &vop_getattr_desc, cd9660_getattr }, /* getattr */
{ &vop_setattr_desc, cd9660_setattr }, /* setattr */
{ &vop_read_desc, spec_read }, /* read */
{ &vop_write_desc, spec_write }, /* write */
{ &vop_lease_desc, spec_lease_check }, /* lease */
{ &vop_ioctl_desc, spec_ioctl }, /* ioctl */
{ &vop_poll_desc, spec_poll }, /* poll */
{ &vop_mmap_desc, spec_mmap }, /* mmap */
{ &vop_fsync_desc, spec_fsync }, /* fsync */
{ &vop_seek_desc, spec_seek }, /* seek */
{ &vop_remove_desc, spec_remove }, /* remove */
{ &vop_link_desc, spec_link }, /* link */
{ &vop_rename_desc, spec_rename }, /* rename */
{ &vop_mkdir_desc, spec_mkdir }, /* mkdir */
{ &vop_rmdir_desc, spec_rmdir }, /* rmdir */
{ &vop_symlink_desc, spec_symlink }, /* symlink */
{ &vop_readdir_desc, spec_readdir }, /* readdir */
{ &vop_readlink_desc, spec_readlink }, /* readlink */
{ &vop_abortop_desc, spec_abortop }, /* abortop */
{ &vop_inactive_desc, cd9660_inactive }, /* inactive */
{ &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */
{ &vop_lock_desc, cd9660_lock }, /* lock */
{ &vop_unlock_desc, cd9660_unlock }, /* unlock */
{ &vop_bmap_desc, spec_bmap }, /* bmap */
{ &vop_strategy_desc, spec_strategy }, /* strategy */
{ &vop_print_desc, cd9660_print }, /* print */
{ &vop_islocked_desc, cd9660_islocked }, /* islocked */
{ &vop_pathconf_desc, spec_pathconf }, /* pathconf */
{ &vop_advlock_desc, spec_advlock }, /* advlock */
{ &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, spec_valloc }, /* valloc */
{ &vop_vfree_desc, spec_vfree }, /* vfree */
{ &vop_truncate_desc, spec_truncate }, /* truncate */
{ &vop_update_desc, cd9660_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
};
struct vnodeopv_desc cd9660_specop_opv_desc =
{ &cd9660_specop_p, cd9660_specop_entries };
#ifdef FIFO
int (**cd9660_fifoop_p) __P((void *));
struct vnodeopv_entry_desc cd9660_fifoop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, fifo_lookup }, /* lookup */
{ &vop_create_desc, fifo_create }, /* create */
{ &vop_mknod_desc, fifo_mknod }, /* mknod */
{ &vop_open_desc, fifo_open }, /* open */
{ &vop_close_desc, fifo_close }, /* close */
{ &vop_access_desc, cd9660_access }, /* access */
{ &vop_getattr_desc, cd9660_getattr }, /* getattr */
{ &vop_setattr_desc, cd9660_setattr }, /* setattr */
{ &vop_read_desc, fifo_read }, /* read */
{ &vop_write_desc, fifo_write }, /* write */
{ &vop_lease_desc, fifo_lease_check }, /* lease */
{ &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
{ &vop_poll_desc, fifo_poll }, /* poll */
{ &vop_mmap_desc, fifo_mmap }, /* mmap */
{ &vop_fsync_desc, fifo_fsync }, /* fsync */
{ &vop_seek_desc, fifo_seek }, /* seek */
{ &vop_remove_desc, fifo_remove }, /* remove */
{ &vop_link_desc, fifo_link } , /* link */
{ &vop_rename_desc, fifo_rename }, /* rename */
{ &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
{ &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
{ &vop_symlink_desc, fifo_symlink }, /* symlink */
{ &vop_readdir_desc, fifo_readdir }, /* readdir */
{ &vop_readlink_desc, fifo_readlink }, /* readlink */
{ &vop_abortop_desc, fifo_abortop }, /* abortop */
{ &vop_inactive_desc, cd9660_inactive }, /* inactive */
{ &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */
{ &vop_lock_desc, cd9660_lock }, /* lock */
{ &vop_unlock_desc, cd9660_unlock }, /* unlock */
{ &vop_bmap_desc, fifo_bmap }, /* bmap */
{ &vop_strategy_desc, fifo_strategy }, /* strategy */
{ &vop_print_desc, cd9660_print }, /* print */
{ &vop_islocked_desc, cd9660_islocked }, /* islocked */
{ &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
{ &vop_advlock_desc, fifo_advlock }, /* advlock */
{ &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, fifo_valloc }, /* valloc */
{ &vop_vfree_desc, fifo_vfree }, /* vfree */
{ &vop_truncate_desc, fifo_truncate }, /* truncate */
{ &vop_update_desc, cd9660_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
};
struct vnodeopv_desc cd9660_fifoop_opv_desc =
{ &cd9660_fifoop_p, cd9660_fifoop_entries };
#endif /* FIFO */
Reference in New Issue View Git Blame Copy Permalink