static void
cd9660_rrip_defname(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
{
isofntrans(isodir->name,isonum_711(isodir->name_len),
ana->outbuf,ana->outlen,
1,isonum_711(isodir->flags)&4, ana->imp->joliet_level,
ana->imp->im_flags, ana->imp->im_d2l);
switch (*ana->outbuf) {
default:
break;
case 1:
*ana->outlen = 2;
/* FALL THROUGH */
case 0:
/* outlen is 1 already */
strcpy(ana->outbuf,"..");
break;
}
}
static void
cd9660_rrip_defname(void *v, ISO_RRIP_ANALYZE *ana)
{
struct iso_directory_record *isodir = v;
isofntrans(isodir->name, isonum_711(isodir->name_len),
ana->outbuf, ana->outlen,
1, 0, isonum_711(isodir->flags) & 4,
ana->imp->im_joliet_level);
switch (ana->outbuf[0]) {
default:
break;
case 0:
ana->outbuf[0] = '.';
*ana->outlen = 1;
break;
case 1:
strlcpy(ana->outbuf, "..", ana->maxlen - *ana->outlen);
*ana->outlen = 2;
break;
}
}
/*
* Vnode op for readdir
*/
int
cd9660_readdir(void *v)
{
struct vop_readdir_args /* {
struct vnode *a_vp;
struct uio *a_uio;
kauth_cred_t a_cred;
int *a_eofflag;
off_t **a_cookies;
int *a_ncookies;
} */ *ap = v;
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;
off_t *cookies = NULL;
int ncookies = 0;
if (vdp->v_type != VDIR)
return (ENOTDIR);
dp = VTOI(vdp);
imp = dp->i_mnt;
bmask = imp->im_bmask;
idp = (struct isoreaddir *)malloc(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 {
ncookies = uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0);
cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
idp->cookies = cookies;
idp->ncookies = ncookies;
}
idp->eofflag = 1;
idp->curroff = uio->uio_offset;
if ((entryoffsetinblock = idp->curroff & bmask) &&
(error = cd9660_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, 0);
error = cd9660_blkatoff(vdp, (off_t)idp->curroff,
NULL, &bp);
if (error)
break;
entryoffsetinblock = 0;
}
/*
* Get pointer to next entry.
*/
KASSERT(bp != NULL);
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 */
isofntrans(ep->name, idp->current.d_namlen,
idp->current.d_name, &namelen,
imp->iso_ftype == ISO_FTYPE_9660,
(imp->im_flags & ISOFSMNT_NOCASETRANS) == 0,
isonum_711(ep->flags)&4,
imp->im_joliet_level);
switch (idp->current.d_name[0]) {
case 0:
idp->current.d_name[0] = '.';
idp->current.d_namlen = 1;
error = iso_uiodir(idp, &idp->current,
idp->curroff);
break;
case 1:
strlcpy(idp->current.d_name, "..",
sizeof(idp->current.d_name));
idp->current.d_namlen = 2;
error = iso_uiodir(idp, &idp->current,
idp->curroff);
break;
default:
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, 0);
uio->uio_offset = idp->uio_off;
*ap->a_eofflag = idp->eofflag;
free(idp, M_TEMP);
return (error);
}
