int
layerfs_loadvnode(struct mount *mp, struct vnode *vp,
const void *key, size_t key_len, const void **new_key)
{
struct layer_mount *lmp = MOUNTTOLAYERMOUNT(mp);
struct vnode *lowervp;
struct layer_node *xp;
KASSERT(key_len == sizeof(struct vnode *));
memcpy(&lowervp, key, key_len);
xp = kmem_alloc(lmp->layerm_size, KM_SLEEP);
if (xp == NULL)
return ENOMEM;
/* Share the interlock with the lower node. */
mutex_obj_hold(lowervp->v_interlock);
uvm_obj_setlock(&vp->v_uobj, lowervp->v_interlock);
vp->v_tag = lmp->layerm_tag;
vp->v_type = lowervp->v_type;
vp->v_op = lmp->layerm_vnodeop_p;
if (vp->v_type == VBLK || vp->v_type == VCHR)
spec_node_init(vp, lowervp->v_rdev);
vp->v_data = xp;
xp->layer_vnode = vp;
xp->layer_lowervp = lowervp;
xp->layer_flags = 0;
uvm_vnp_setsize(vp, 0);
/* Add a reference to the lower node. */
vref(lowervp);
*new_key = &xp->layer_lowervp;
return 0;
}
/*
* allocate a ptyfsnode/vnode pair. the vnode is
* referenced, and locked.
*
* the pid, ptyfs_type, and mount point uniquely
* identify a ptyfsnode. the mount point is needed
* because someone might mount this filesystem
* twice.
*
* all ptyfsnodes are maintained on a singly-linked
* list. new nodes are only allocated when they cannot
* be found on this list. entries on the list are
* removed when the vfs reclaim entry is called.
*
* a single lock is kept for the entire list. this is
* needed because the getnewvnode() function can block
* waiting for a vnode to become free, in which case there
* may be more than one ptyess trying to get the same
* vnode. this lock is only taken if we are going to
* call getnewvnode, since the kernel itself is single-threaded.
*
* if an entry is found on the list, then call vget() to
* take a reference. this is done because there may be
* zero references to it and so it needs to removed from
* the vnode free list.
*/
int
ptyfs_allocvp(struct mount *mp, struct vnode **vpp, ptyfstype type, int pty,
struct lwp *l)
{
struct ptyfsnode *ptyfs;
struct vnode *vp;
int error;
retry:
if ((*vpp = ptyfs_used_get(type, pty, mp, LK_EXCLUSIVE)) != NULL)
return 0;
error = getnewvnode(VT_PTYFS, mp, ptyfs_vnodeop_p, NULL, &vp);
if (error) {
*vpp = NULL;
return error;
}
mutex_enter(&ptyfs_hashlock);
if (ptyfs_used_get(type, pty, mp, 0) != NULL) {
mutex_exit(&ptyfs_hashlock);
ungetnewvnode(vp);
goto retry;
}
vp->v_data = ptyfs = ptyfs_free_get(type, pty, l);
ptyfs->ptyfs_vnode = vp;
switch (type) {
case PTYFSroot: /* /pts = dr-xr-xr-x */
vp->v_type = VDIR;
vp->v_vflag = VV_ROOT;
break;
case PTYFSpts: /* /pts/N = cxxxxxxxxx */
case PTYFSptc: /* controlling side = cxxxxxxxxx */
vp->v_type = VCHR;
spec_node_init(vp, PTYFS_MAKEDEV(ptyfs));
break;
default:
panic("ptyfs_allocvp");
}
ptyfs_hashins(ptyfs);
uvm_vnp_setsize(vp, 0);
mutex_exit(&ptyfs_hashlock);
*vpp = vp;
return 0;
}
/*
* Initialize the vnode associated with a new inode, handle aliased
* vnodes.
*/
void
ulfs_vinit(struct mount *mntp, int (**specops)(void *), int (**fifoops)(void *),
struct vnode **vpp)
{
struct timeval tv;
struct inode *ip;
struct vnode *vp;
dev_t rdev;
struct ulfsmount *ump;
vp = *vpp;
ip = VTOI(vp);
switch(vp->v_type = IFTOVT(ip->i_mode)) {
case VCHR:
case VBLK:
vp->v_op = specops;
ump = ip->i_ump;
// XXX clean this up
if (ump->um_fstype == ULFS1)
rdev = (dev_t)ulfs_rw32(ip->i_din->u_32.di_rdev,
ULFS_MPNEEDSWAP(ump->um_lfs));
else
rdev = (dev_t)ulfs_rw64(ip->i_din->u_64.di_rdev,
ULFS_MPNEEDSWAP(ump->um_lfs));
spec_node_init(vp, rdev);
break;
case VFIFO:
vp->v_op = fifoops;
break;
case VNON:
case VBAD:
case VSOCK:
case VLNK:
case VDIR:
case VREG:
break;
}
if (ip->i_number == ULFS_ROOTINO)
vp->v_vflag |= VV_ROOT;
/*
* Initialize modrev times
*/
getmicrouptime(&tv);
ip->i_modrev = (uint64_t)(uint)tv.tv_sec << 32
| tv.tv_usec * 4294u;
*vpp = vp;
}
/*
* Initialize the vnode associated with a new hfsnode.
*/
void
hfs_vinit(struct mount *mp, int (**specops)(void *), int (**fifoops)(void *),
struct vnode **vpp)
{
struct hfsnode *hp;
struct vnode *vp;
vp = *vpp;
hp = VTOH(vp);
vp->v_type = hfs_catalog_keyed_record_vtype(
(hfs_catalog_keyed_record_t *)&hp->h_rec);
switch(vp->v_type) {
case VCHR:
case VBLK:
vp->v_op = specops;
spec_node_init(vp,
HFS_CONVERT_RDEV(hp->h_rec.file.bsd.special.raw_device));
break;
case VFIFO:
vp->v_op = fifoops;
break;
case VNON:
case VBAD:
case VSOCK:
case VDIR:
case VREG:
case VLNK:
break;
}
if (hp->h_rec.u.cnid == HFS_CNID_ROOT_FOLDER)
vp->v_vflag |= VV_ROOT;
*vpp = vp;
}
/* ARGSUSED */
int
mfs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
{
struct lwp *l = curlwp;
struct vnode *devvp;
struct mfs_args *args = data;
struct ufsmount *ump;
struct fs *fs;
struct mfsnode *mfsp;
struct proc *p;
int flags, error = 0;
if (*data_len < sizeof *args)
return EINVAL;
p = l->l_proc;
if (mp->mnt_flag & MNT_GETARGS) {
struct vnode *vp;
ump = VFSTOUFS(mp);
if (ump == NULL)
return EIO;
vp = ump->um_devvp;
if (vp == NULL)
return EIO;
mfsp = VTOMFS(vp);
if (mfsp == NULL)
return EIO;
args->fspec = NULL;
args->base = mfsp->mfs_baseoff;
args->size = mfsp->mfs_size;
*data_len = sizeof *args;
return 0;
}
/*
* XXX turn off async to avoid hangs when writing lots of data.
* the problem is that MFS needs to allocate pages to clean pages,
* so if we wait until the last minute to clean pages then there
* may not be any pages available to do the cleaning.
* ... and since the default partially-synchronous mode turns out
* to not be sufficient under heavy load, make it full synchronous.
*/
mp->mnt_flag &= ~MNT_ASYNC;
mp->mnt_flag |= MNT_SYNCHRONOUS;
/*
* 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) {
ump = VFSTOUFS(mp);
fs = ump->um_fs;
if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = ffs_flushfiles(mp, flags, l);
if (error)
return (error);
}
if (fs->fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR))
fs->fs_ronly = 0;
if (args->fspec == NULL)
return EINVAL;
return (0);
}
error = getnewvnode(VT_MFS, NULL, mfs_vnodeop_p, NULL, &devvp);
if (error)
return (error);
devvp->v_vflag |= VV_MPSAFE;
devvp->v_type = VBLK;
spec_node_init(devvp, makedev(255, mfs_minor));
mfs_minor++;
mfsp = kmem_alloc(sizeof(*mfsp), KM_SLEEP);
devvp->v_data = mfsp;
mfsp->mfs_baseoff = args->base;
mfsp->mfs_size = args->size;
mfsp->mfs_vnode = devvp;
mfsp->mfs_proc = p;
mfsp->mfs_shutdown = 0;
cv_init(&mfsp->mfs_cv, "mfsidl");
mfsp->mfs_refcnt = 1;
bufq_alloc(&mfsp->mfs_buflist, "fcfs", 0);
if ((error = ffs_mountfs(devvp, mp, l)) != 0) {
mfsp->mfs_shutdown = 1;
vrele(devvp);
return (error);
}
ump = VFSTOUFS(mp);
fs = ump->um_fs;
error = set_statvfs_info(path, UIO_USERSPACE, args->fspec,
UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l);
if (error)
return error;
(void)strncpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname,
sizeof(fs->fs_fsmnt));
fs->fs_fsmnt[sizeof(fs->fs_fsmnt) - 1] = '\0';
/* XXX: cleanup on error */
return 0;
}
/*
* layer_node_alloc: make a new layerfs vnode.
*
* => vp is the alias vnode, lowervp is the lower vnode.
* => We will hold a reference to lowervp.
*/
int
layer_node_alloc(struct mount *mp, struct vnode *lowervp, struct vnode **vpp)
{
struct layer_mount *lmp = MOUNTTOLAYERMOUNT(mp);
struct layer_node_hashhead *hd;
struct layer_node *xp;
struct vnode *vp, *nvp;
int error;
/* Get a new vnode and share its interlock with underlying vnode. */
error = getnewvnode(lmp->layerm_tag, mp, lmp->layerm_vnodeop_p,
lowervp->v_interlock, &vp);
if (error) {
return error;
}
vp->v_type = lowervp->v_type;
mutex_enter(vp->v_interlock);
vp->v_iflag |= VI_LAYER;
mutex_exit(vp->v_interlock);
xp = kmem_alloc(lmp->layerm_size, KM_SLEEP);
if (xp == NULL) {
ungetnewvnode(vp);
return ENOMEM;
}
if (vp->v_type == VBLK || vp->v_type == VCHR) {
spec_node_init(vp, lowervp->v_rdev);
}
/*
* Before inserting the node into the hash, check if other thread
* did not race with us. If so - return that node, destroy ours.
*/
mutex_enter(&lmp->layerm_hashlock);
if ((nvp = layer_node_find(mp, lowervp)) != NULL) {
ungetnewvnode(vp);
kmem_free(xp, lmp->layerm_size);
*vpp = nvp;
return 0;
}
vp->v_data = xp;
vp->v_vflag = (vp->v_vflag & ~VV_MPSAFE) |
(lowervp->v_vflag & VV_MPSAFE);
xp->layer_vnode = vp;
xp->layer_lowervp = lowervp;
xp->layer_flags = 0;
/*
* Insert the new node into the hash.
* Add a reference to the lower node.
*/
vref(lowervp);
hd = LAYER_NHASH(lmp, lowervp);
LIST_INSERT_HEAD(hd, xp, layer_hash);
uvm_vnp_setsize(vp, 0);
mutex_exit(&lmp->layerm_hashlock);
*vpp = vp;
return 0;
}
static int
chfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
{
struct chfs_mount *chmp;
struct chfs_inode *ip;
struct ufsmount *ump;
struct vnode *vp;
dev_t dev;
int error;
struct chfs_vnode_cache* chvc = NULL;
struct chfs_node_ref* nref = NULL;
struct buf *bp;
dbg("vget() | ino: %llu\n", (unsigned long long)ino);
ump = VFSTOUFS(mp);
dev = ump->um_dev;
retry:
if (!vpp) {
vpp = kmem_alloc(sizeof(struct vnode*), KM_SLEEP);
}
/* Get node from inode hash. */
if ((*vpp = chfs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) {
return 0;
}
/* Allocate a new vnode/inode. */
if ((error = getnewvnode(VT_CHFS,
mp, chfs_vnodeop_p, NULL, &vp)) != 0) {
*vpp = NULL;
return (error);
}
ip = pool_get(&chfs_inode_pool, PR_WAITOK);
mutex_enter(&chfs_hashlock);
if ((*vpp = chfs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) {
mutex_exit(&chfs_hashlock);
ungetnewvnode(vp);
pool_put(&chfs_inode_pool, ip);
goto retry;
}
vp->v_vflag |= VV_LOCKSWORK;
/* Initialize vnode/inode. */
memset(ip, 0, sizeof(*ip));
vp->v_data = ip;
ip->vp = vp;
ip->ch_type = VTTOCHT(vp->v_type);
ip->ump = ump;
ip->chmp = chmp = ump->um_chfs;
ip->dev = dev;
ip->ino = ino;
vp->v_mount = mp;
genfs_node_init(vp, &chfs_genfsops);
rb_tree_init(&ip->fragtree, &frag_rbtree_ops);
chfs_ihashins(ip);
mutex_exit(&chfs_hashlock);
/* Set root inode. */
if (ino == CHFS_ROOTINO) {
dbg("SETROOT\n");
vp->v_vflag |= VV_ROOT;
vp->v_type = VDIR;
ip->ch_type = CHT_DIR;
ip->mode = IFMT | IEXEC | IWRITE | IREAD;
ip->iflag |= (IN_ACCESS | IN_CHANGE | IN_UPDATE);
chfs_update(vp, NULL, NULL, UPDATE_WAIT);
TAILQ_INIT(&ip->dents);
chfs_set_vnode_size(vp, 512);
}
mutex_enter(&chmp->chm_lock_vnocache);
chvc = chfs_vnode_cache_get(chmp, ino);
mutex_exit(&chmp->chm_lock_vnocache);
if (!chvc) {
dbg("!chvc\n");
/* Initialize the corresponding vnode cache. */
/* XXX, we cant alloc under a lock, refactor this! */
chvc = chfs_vnode_cache_alloc(ino);
mutex_enter(&chmp->chm_lock_vnocache);
if (ino == CHFS_ROOTINO) {
chvc->nlink = 2;
chvc->pvno = CHFS_ROOTINO;
chvc->state = VNO_STATE_CHECKEDABSENT;
}
chfs_vnode_cache_add(chmp, chvc);
mutex_exit(&chmp->chm_lock_vnocache);
ip->chvc = chvc;
TAILQ_INIT(&ip->dents);
} else {
dbg("chvc\n");
ip->chvc = chvc;
/* We had a vnode cache, the node is already on flash, so read it */
if (ino == CHFS_ROOTINO) {
chvc->pvno = CHFS_ROOTINO;
TAILQ_INIT(&chvc->scan_dirents);
} else {
chfs_readvnode(mp, ino, &vp);
}
mutex_enter(&chmp->chm_lock_mountfields);
/* Initialize type specific things. */
switch (ip->ch_type) {
case CHT_DIR:
/* Read every dirent. */
nref = chvc->dirents;
while (nref &&
(struct chfs_vnode_cache *)nref != chvc) {
chfs_readdirent(mp, nref, ip);
nref = nref->nref_next;
}
chfs_set_vnode_size(vp, 512);
break;
case CHT_REG:
/* FALLTHROUGH */
case CHT_SOCK:
/* Collect data. */
dbg("read_inode_internal | ino: %llu\n",
(unsigned long long)ip->ino);
error = chfs_read_inode(chmp, ip);
if (error) {
vput(vp);
*vpp = NULL;
mutex_exit(&chmp->chm_lock_mountfields);
return (error);
}
break;
case CHT_LNK:
/* Collect data. */
dbg("read_inode_internal | ino: %llu\n",
(unsigned long long)ip->ino);
error = chfs_read_inode_internal(chmp, ip);
if (error) {
vput(vp);
*vpp = NULL;
mutex_exit(&chmp->chm_lock_mountfields);
return (error);
}
/* Set link. */
dbg("size: %llu\n", (unsigned long long)ip->size);
bp = getiobuf(vp, true);
bp->b_blkno = 0;
bp->b_bufsize = bp->b_resid =
bp->b_bcount = ip->size;
bp->b_data = kmem_alloc(ip->size, KM_SLEEP);
chfs_read_data(chmp, vp, bp);
if (!ip->target)
ip->target = kmem_alloc(ip->size,
KM_SLEEP);
memcpy(ip->target, bp->b_data, ip->size);
kmem_free(bp->b_data, ip->size);
putiobuf(bp);
break;
case CHT_CHR:
/* FALLTHROUGH */
case CHT_BLK:
/* FALLTHROUGH */
case CHT_FIFO:
/* Collect data. */
dbg("read_inode_internal | ino: %llu\n",
(unsigned long long)ip->ino);
error = chfs_read_inode_internal(chmp, ip);
if (error) {
vput(vp);
*vpp = NULL;
mutex_exit(&chmp->chm_lock_mountfields);
return (error);
}
/* Set device. */
bp = getiobuf(vp, true);
bp->b_blkno = 0;
bp->b_bufsize = bp->b_resid =
bp->b_bcount = sizeof(dev_t);
bp->b_data = kmem_alloc(sizeof(dev_t), KM_SLEEP);
chfs_read_data(chmp, vp, bp);
memcpy(&ip->rdev,
bp->b_data, sizeof(dev_t));
kmem_free(bp->b_data, sizeof(dev_t));
putiobuf(bp);
/* Set specific operations. */
if (ip->ch_type == CHT_FIFO) {
vp->v_op = chfs_fifoop_p;
} else {
vp->v_op = chfs_specop_p;
spec_node_init(vp, ip->rdev);
}
break;
case CHT_BLANK:
/* FALLTHROUGH */
case CHT_BAD:
break;
}
mutex_exit(&chmp->chm_lock_mountfields);
}
/* Finish inode initalization. */
ip->devvp = ump->um_devvp;
vref(ip->devvp);
uvm_vnp_setsize(vp, ip->size);
*vpp = vp;
return 0;
}
int
v7fs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
{
struct v7fs_mount *v7fsmount = mp->mnt_data;
struct v7fs_self *fs = v7fsmount->core;
struct vnode *vp;
struct v7fs_node *v7fs_node;
struct v7fs_inode inode;
int error;
/* Lookup requested i-node */
if ((error = v7fs_inode_load(fs, &inode, ino))) {
DPRINTF("v7fs_inode_load failed.\n");
return error;
}
retry:
mutex_enter(&mntvnode_lock);
for (v7fs_node = LIST_FIRST(&v7fsmount->v7fs_node_head);
v7fs_node != NULL; v7fs_node = LIST_NEXT(v7fs_node, link)) {
if (v7fs_node->inode.inode_number == ino) {
vp = v7fs_node->vnode;
mutex_enter(vp->v_interlock);
mutex_exit(&mntvnode_lock);
if (vget(vp, LK_EXCLUSIVE) == 0) {
*vpp = vp;
return 0;
} else {
DPRINTF("retry!\n");
goto retry;
}
}
}
mutex_exit(&mntvnode_lock);
/* Allocate v-node. */
if ((error = getnewvnode(VT_V7FS, mp, v7fs_vnodeop_p, NULL, &vp))) {
DPRINTF("getnewvnode error.\n");
return error;
}
/* Lock vnode here */
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
/* Allocate i-node */
vp->v_data = pool_get(&v7fs_node_pool, PR_WAITOK);
memset(vp->v_data, 0, sizeof(*v7fs_node));
v7fs_node = vp->v_data;
mutex_enter(&mntvnode_lock);
LIST_INSERT_HEAD(&v7fsmount->v7fs_node_head, v7fs_node, link);
mutex_exit(&mntvnode_lock);
v7fs_node->vnode = vp;
v7fs_node->v7fsmount = v7fsmount;
v7fs_node->inode = inode;/*structure copy */
v7fs_node->lockf = NULL; /* advlock */
genfs_node_init(vp, &v7fs_genfsops);
uvm_vnp_setsize(vp, v7fs_inode_filesize(&inode));
if (ino == V7FS_ROOT_INODE) {
vp->v_type = VDIR;
vp->v_vflag |= VV_ROOT;
} else {
vp->v_type = v7fs_mode_to_vtype(inode.mode);
if (vp->v_type == VBLK || vp->v_type == VCHR) {
dev_t rdev = inode.device;
vp->v_op = v7fs_specop_p;
spec_node_init(vp, rdev);
} else if (vp->v_type == VFIFO) {
vp->v_op = v7fs_fifoop_p;
}
}
*vpp = vp;
return 0;
}
int
cd9660_vget_internal(struct mount *mp, ino_t ino, struct vnode **vpp,
int relocated, struct iso_directory_record *isodir)
{
struct iso_mnt *imp;
struct iso_node *ip;
struct buf *bp;
struct vnode *vp;
dev_t dev;
int error;
imp = VFSTOISOFS(mp);
dev = imp->im_dev;
retry:
if ((*vpp = cd9660_ihashget(dev, ino, LK_EXCLUSIVE)) != NULLVP)
return (0);
/* Allocate a new vnode/iso_node. */
error = getnewvnode(VT_ISOFS, mp, cd9660_vnodeop_p, NULL, &vp);
if (error) {
*vpp = NULLVP;
return (error);
}
ip = pool_get(&cd9660_node_pool, PR_WAITOK);
/*
* If someone beat us to it, put back the freshly allocated
* vnode/inode pair and retry.
*/
mutex_enter(&cd9660_hashlock);
if (cd9660_ihashget(dev, ino, 0) != NULL) {
mutex_exit(&cd9660_hashlock);
ungetnewvnode(vp);
pool_put(&cd9660_node_pool, ip);
goto retry;
}
memset(ip, 0, sizeof(struct iso_node));
vp->v_data = ip;
ip->i_vnode = vp;
ip->i_dev = dev;
ip->i_number = ino;
ip->i_mnt = imp;
ip->i_devvp = imp->im_devvp;
genfs_node_init(vp, &cd9660_genfsops);
/*
* 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.
*/
cd9660_ihashins(ip);
mutex_exit(&cd9660_hashlock);
if (isodir == 0) {
int lbn, off;
lbn = cd9660_lblkno(imp, ino);
if (lbn >= imp->volume_space_size) {
vput(vp);
printf("fhtovp: lbn exceed volume space %d\n", lbn);
return (ESTALE);
}
off = cd9660_blkoff(imp, ino);
if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) {
vput(vp);
printf("fhtovp: crosses block boundary %d\n",
off + ISO_DIRECTORY_RECORD_SIZE);
return (ESTALE);
}
error = bread(imp->im_devvp,
lbn << (imp->im_bshift - DEV_BSHIFT),
imp->logical_block_size, NOCRED, 0, &bp);
if (error) {
vput(vp);
printf("fhtovp: bread error %d\n",error);
return (error);
}
isodir = (struct iso_directory_record *)((char *)bp->b_data + off);
if (off + isonum_711(isodir->length) >
imp->logical_block_size) {
vput(vp);
if (bp != 0)
brelse(bp, 0);
printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n",
off +isonum_711(isodir->length), off,
isonum_711(isodir->length));
return (ESTALE);
}
#if 0
if (isonum_733(isodir->extent) +
isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) {
if (bp != 0)
brelse(bp, 0);
printf("fhtovp: file start miss %d vs %d\n",
isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length),
ifhp->ifid_start);
return (ESTALE);
}
#endif
} else
bp = 0;
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 (bp != 0)
brelse(bp, 0);
if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) {
vput(vp);
return (error);
}
isodir = (struct iso_directory_record *)bp->b_data;
}
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;
/*
* Setup time stamp, attribute
*/
vp->v_type = VNON;
switch (imp->iso_ftype) {
default: /* ISO_FTYPE_9660 */
{
struct buf *bp2;
int off;
if ((imp->im_flags & ISOFSMNT_EXTATT)
&& (off = isonum_711(isodir->ext_attr_length)))
cd9660_blkatoff(vp, (off_t)-(off << imp->im_bshift),
NULL, &bp2);
else
bp2 = NULL;
cd9660_defattr(isodir, ip, bp2);
cd9660_deftstamp(isodir, ip, bp2);
if (bp2)
brelse(bp2, 0);
break;
}
case ISO_FTYPE_RRIP:
cd9660_rrip_analyze(isodir, ip, imp);
break;
}
if (bp != 0)
brelse(bp, 0);
/*
* Initialize the associated vnode
*/
switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) {
case VFIFO:
vp->v_op = cd9660_fifoop_p;
break;
case VCHR:
case VBLK:
/*
* if device, look at device number table for translation
*/
vp->v_op = cd9660_specop_p;
spec_node_init(vp, ip->inode.iso_rdev);
break;
case VLNK:
case VNON:
case VSOCK:
case VDIR:
case VBAD:
break;
case VREG:
uvm_vnp_setsize(vp, ip->i_size);
break;
}
if (vp->v_type != VREG)
uvm_vnp_setsize(vp, 0);
if (ip->iso_extent == imp->root_extent)
vp->v_vflag |= VV_ROOT;
/*
* XXX need generation number?
*/
*vpp = vp;
return (0);
}
/*
* Obtain a locked vnode for the given on-disk inode number.
*
* We currently allocate a new vnode from getnewnode(), tack it with
* our in-core inode structure (efs_inode), and read in the inode from
* disk. The returned inode must be locked.
*
* Returns 0 on success.
*/
static int
efs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
{
int err;
struct vnode *vp;
struct efs_inode *eip;
struct efs_mount *emp;
emp = VFSTOEFS(mp);
while (true) {
*vpp = efs_ihashget(emp->em_dev, ino, LK_EXCLUSIVE);
if (*vpp != NULL)
return (0);
err = getnewvnode(VT_EFS, mp, efs_vnodeop_p, NULL, &vp);
if (err)
return (err);
eip = pool_get(&efs_inode_pool, PR_WAITOK);
/*
* See if anybody has raced us here. If not, continue
* setting up the new inode, otherwise start over.
*/
efs_ihashlock();
if (efs_ihashget(emp->em_dev, ino, 0) == NULL)
break;
efs_ihashunlock();
ungetnewvnode(vp);
pool_put(&efs_inode_pool, eip);
}
vp->v_vflag |= VV_LOCKSWORK;
eip->ei_mode = 0;
eip->ei_lockf = NULL;
eip->ei_number = ino;
eip->ei_dev = emp->em_dev;
eip->ei_vp = vp;
vp->v_data = eip;
/*
* Place the vnode on the hash chain. Doing so will lock the
* vnode, so it's okay to drop the global lock and read in
* the inode from disk.
*/
efs_ihashins(eip);
efs_ihashunlock();
/*
* Init genfs early, otherwise we'll trip up on genfs_node_destroy
* in efs_reclaim when vput()ing in an error branch here.
*/
genfs_node_init(vp, &efs_genfsops);
err = efs_read_inode(emp, ino, NULL, &eip->ei_di);
if (err) {
vput(vp);
*vpp = NULL;
return (err);
}
efs_sync_dinode_to_inode(eip);
if (ino == EFS_ROOTINO && !S_ISDIR(eip->ei_mode)) {
printf("efs: root inode (%lu) is not a directory!\n",
(ulong)EFS_ROOTINO);
vput(vp);
*vpp = NULL;
return (EIO);
}
switch (eip->ei_mode & S_IFMT) {
case S_IFIFO:
vp->v_type = VFIFO;
vp->v_op = efs_fifoop_p;
break;
case S_IFCHR:
vp->v_type = VCHR;
vp->v_op = efs_specop_p;
spec_node_init(vp, eip->ei_dev);
break;
case S_IFDIR:
vp->v_type = VDIR;
if (ino == EFS_ROOTINO)
vp->v_vflag |= VV_ROOT;
break;
case S_IFBLK:
vp->v_type = VBLK;
vp->v_op = efs_specop_p;
spec_node_init(vp, eip->ei_dev);
break;
case S_IFREG:
vp->v_type = VREG;
break;
case S_IFLNK:
vp->v_type = VLNK;
break;
case S_IFSOCK:
vp->v_type = VSOCK;
break;
default:
printf("efs: invalid mode 0x%x in inode %lu on mount %s\n",
eip->ei_mode, (ulong)ino, mp->mnt_stat.f_mntonname);
vput(vp);
*vpp = NULL;
return (EIO);
}
uvm_vnp_setsize(vp, eip->ei_size);
*vpp = vp;
KASSERT(VOP_ISLOCKED(vp));
return (0);
}
