/*
* Try to create a journal log inside the filesystem.
*/
int
wapbl_create_infs_log(struct mount *mp, struct fs *fs, struct vnode *devvp,
daddr_t *startp, size_t *countp, uint64_t *extradatap)
{
struct vnode *vp, *rvp;
struct inode *ip;
int error;
if ((error = VFS_ROOT(mp, &rvp)) != 0)
return error;
error = UFS_INODE_ALLOC(VTOI(rvp), 0 | S_IFREG, NOCRED, &vp);
if (mp->mnt_flag & MNT_UPDATE) {
vput(rvp);
} else {
VOP_UNLOCK(rvp, 0);
vgone(rvp);
}
if (error != 0)
return error;
vp->v_type = VREG;
ip = VTOI(vp);
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
/* ip->i_mode = 0 | IFREG; */
DIP_ASSIGN(ip, mode, 0 | IFREG);
/* ip->i_flags = SF_LOG; */
DIP_ASSIGN(ip, flags, SF_LOG);
ip->i_effnlink = 1;
DIP_ASSIGN(ip, nlink, 1);
ffs_update(ip, MNT_WAIT);
if ((error = wapbl_allocate_log_file(mp, vp,
startp, countp, extradatap)) != 0) {
/*
* If we couldn't allocate the space for the log file,
* remove the inode by setting its link count back to
* zero and bail.
*/
ip->i_effnlink = 0;
DIP_ASSIGN(ip, nlink, 0);
VOP_UNLOCK(vp, 0);
vgone(vp);
return error;
}
/*
* Now that we have the place-holder inode for the journal,
* we don't need the vnode ever again.
*/
VOP_UNLOCK(vp, 0);
vgone(vp);
return 0;
}
static int
_xfs_rename(
struct vop_rename_args /* {
struct vnode *a_fdvp;
struct vnode *a_fvp;
struct componentname *a_fcnp;
struct vnode *a_tdvp;
struct vnode *a_tvp;
struct componentname *a_tcnp;
} */ *ap)
{
struct vnode *fvp = ap->a_fvp;
struct vnode *tvp = ap->a_tvp;
struct vnode *fdvp = ap->a_fdvp;
struct vnode *tdvp = ap->a_tdvp;
/* struct componentname *tcnp = ap->a_tcnp; */
/* struct componentname *fcnp = ap->a_fcnp;*/
int error = EPERM;
if (error)
goto out;
/* Check for cross-device rename */
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
error = EXDEV;
goto out;
}
if (tvp && tvp->v_usecount > 1) {
error = EBUSY;
goto out;
}
if (fvp->v_type == VDIR) {
if (tvp != NULL && tvp->v_type == VDIR)
cache_purge(tdvp);
cache_purge(fdvp);
}
out:
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
vrele(fdvp);
vrele(fvp);
vgone(fvp);
if (tvp)
vgone(tvp);
return (error);
}
/*
* Free reference to overlay layer
*/
int
ov_unmount(struct mount *mp, int mntflags)
{
struct vnode *overlay_rootvp = MOUNTTOOVERLAYMOUNT(mp)->ovm_rootvp;
struct overlay_mount *omp;
int error;
int flags = 0;
#ifdef OVERLAYFS_DIAGNOSTIC
printf("ov_unmount(mp = %p)\n", mp);
#endif
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if (overlay_rootvp->v_usecount > 1 && (mntflags & MNT_FORCE) == 0)
return (EBUSY);
if ((error = vflush(mp, overlay_rootvp, flags)) != 0)
return (error);
#ifdef OVERLAYFS_DIAGNOSTIC
vprint("alias root of lower", overlay_rootvp);
#endif
/*
* Blow it away for future re-use
*/
vgone(overlay_rootvp);
/*
* Finally, throw away the overlay_mount structure
*/
omp = mp->mnt_data;
kmem_free(omp, sizeof(struct overlay_mount));
mp->mnt_data = NULL;
return 0;
}
int
fdesc_unmount(struct mount *mp, int mntflags)
{
int error;
int flags = 0;
struct vnode *rtvp = VFSTOFDESC(mp)->f_root;
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if (rtvp->v_usecount > 1 && (mntflags & MNT_FORCE) == 0)
return (EBUSY);
if ((error = vflush(mp, rtvp, flags)) != 0)
return (error);
/*
* Blow it away for future re-use
*/
vgone(rtvp);
/*
* Finally, throw away the fdescmount structure
*/
free(mp->mnt_data, M_UFSMNT); /* XXX */
mp->mnt_data = NULL;
return (0);
}
/*
* Purge the cache of dead entries
*
* This is extremely inefficient due to the fact that vgone() not only
* indirectly modifies the vnode cache, but may also sleep. We can
* neither hold pfs_vncache_mutex across a vgone() call, nor make any
* assumptions about the state of the cache after vgone() returns. In
* consequence, we must start over after every vgone() call, and keep
* trying until we manage to traverse the entire cache.
*
* The only way to improve this situation is to change the data structure
* used to implement the cache.
*/
static void
pfs_purge_locked(struct pfs_node *pn, bool force)
{
struct pfs_vdata *pvd;
struct vnode *vnp;
mtx_assert(&pfs_vncache_mutex, MA_OWNED);
pvd = pfs_vncache;
while (pvd != NULL) {
if (force || pvd->pvd_dead ||
(pn != NULL && pvd->pvd_pn == pn)) {
vnp = pvd->pvd_vnode;
vhold(vnp);
mtx_unlock(&pfs_vncache_mutex);
VOP_LOCK(vnp, LK_EXCLUSIVE);
vgone(vnp);
VOP_UNLOCK(vnp, 0);
mtx_lock(&pfs_vncache_mutex);
vdrop(vnp);
pvd = pfs_vncache;
} else {
pvd = pvd->pvd_next;
}
}
}
/*
* If allocating vnode fails, call this.
*/
static void
fdesc_insmntque_dtr(struct vnode *vp, void *arg)
{
vgone(vp);
vput(vp);
}
int
osi_TryEvictVCache(struct vcache *avc, int *slept, int defersleep)
{
struct vnode *vp;
int code;
vp = AFSTOV(avc);
if (!VI_TRYLOCK(vp))
return 0;
code = osi_fbsd_checkinuse(avc);
if (code != 0) {
VI_UNLOCK(vp);
return 0;
}
if ((vp->v_iflag & VI_DOOMED) != 0) {
VI_UNLOCK(vp);
return 1;
}
/* must hold the vnode before calling vgone()
* This code largely copied from vfs_subr.c:vlrureclaim() */
vholdl(vp);
AFS_GUNLOCK();
*slept = 1;
/* use the interlock while locking, so no one else can DOOM this */
ma_vn_lock(vp, LK_INTERLOCK|LK_EXCLUSIVE|LK_RETRY, curthread);
vgone(vp);
MA_VOP_UNLOCK(vp, 0, curthread);
vdrop(vp);
AFS_GLOCK();
return 1;
}
/*
* Free reference to umap layer
*/
int
umapfs_unmount(struct mount *mp, int mntflags)
{
struct umap_mount *amp = MOUNTTOUMAPMOUNT(mp);
struct vnode *rtvp = amp->umapm_rootvp;
int error;
int flags = 0;
#ifdef UMAPFS_DIAGNOSTIC
printf("umapfs_unmount(mp = %p)\n", mp);
#endif
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if (rtvp->v_usecount > 1 && (mntflags & MNT_FORCE) == 0)
return (EBUSY);
if ((error = vflush(mp, rtvp, flags)) != 0)
return (error);
#ifdef UMAPFS_DIAGNOSTIC
vprint("alias root of lower", rtvp);
#endif
/*
* Blow it away for future re-use
*/
vgone(rtvp);
/*
* Finally, throw away the umap_mount structure
*/
kmem_free(amp, sizeof(struct umap_mount));
mp->mnt_data = NULL;
return 0;
}
/*
* Mknod vnode call
*/
int
ufs_mknod(void *v)
{
struct vop_mknod_args *ap = v;
struct vattr *vap = ap->a_vap;
struct vnode **vpp = ap->a_vpp;
struct inode *ip;
int error;
if ((error =
ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
ap->a_dvp, vpp, ap->a_cnp)) != 0)
return (error);
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
ip = VTOI(*vpp);
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
if (vap->va_rdev != VNOVAL) {
/*
* Want to be able to use this to make badblock
* inodes, so don't truncate the dev number.
*/
DIP_ASSIGN(ip, rdev, vap->va_rdev);
}
/*
* Remove inode so that it will be reloaded by VFS_VGET and
* checked to see if it is an alias of an existing entry in
* the inode cache.
*/
vput(*vpp);
(*vpp)->v_type = VNON;
vgone(*vpp);
*vpp = NULL;
return (0);
}
/*
* _inactive is called when the pfsnode
* is vrele'd and the reference count goes
* to zero. (vp) will be on the vnode free
* list, so to get it back vget() must be
* used.
*
* for procfs, check if the process is still
* alive and if it isn't then just throw away
* the vnode by calling vgone(). this may
* be overkill and a waste of time since the
* chances are that the process will still be
* there and pfind is not free.
*
* (vp) is not locked on entry or exit.
*/
int
procfs_inactive(void *v)
{
struct vop_inactive_args *ap = v;
struct vnode *vp = ap->a_vp;
struct pfsnode *pfs = VTOPFS(vp);
if (pfind(pfs->pfs_pid) == NULL && !(vp->v_flag & VXLOCK))
vgone(vp);
return (0);
}
static void
pefs_insmntque_dtr(struct vnode *vp, void *_pn)
{
struct pefs_node *pn = _pn;
PEFSDEBUG("pefs_insmntque_dtr: free node %p\n", pn);
vp->v_data = NULL;
vp->v_vnlock = &vp->v_lock;
pefs_key_release(pn->pn_tkey.ptk_key);
uma_zfree(pefs_node_zone, pn);
vp->v_op = &dead_vnodeops;
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
vgone(vp);
vput(vp);
}
/* Try to discard pages, in order to recycle a vcache entry.
*
* We also make some sanity checks: ref count, open count, held locks.
*
* We also do some non-VM-related chores, such as releasing the cred pointer
* (for AIX and Solaris) and releasing the gnode (for AIX).
*
* Locking: afs_xvcache lock is held. If it is dropped and re-acquired,
* *slept should be set to warn the caller.
*
* Formerly, afs_xvcache was dropped and re-acquired for Solaris, but now it
* is not dropped and re-acquired for any platform. It may be that *slept is
* therefore obsolescent.
*
*/
int
osi_VM_FlushVCache(struct vcache *avc, int *slept)
{
struct vm_object *obj;
struct vnode *vp = AFSTOV(avc);
if (!VI_TRYLOCK(vp)) /* need interlock to check usecount */
return EBUSY;
if (vp->v_usecount > 0) {
VI_UNLOCK(vp);
return EBUSY;
}
/* XXX
* The value of avc->opens here came to be, at some point,
* typically -1. This was caused by incorrectly performing afs_close
* processing on vnodes being recycled */
if (avc->opens) {
VI_UNLOCK(vp);
return EBUSY;
}
/* if a lock is held, give up */
if (CheckLock(&avc->lock)) {
VI_UNLOCK(vp);
return EBUSY;
}
if ((vp->v_iflag & VI_DOOMED) != 0) {
VI_UNLOCK(vp);
return (0);
}
/* must hold the vnode before calling vgone()
* This code largely copied from vfs_subr.c:vlrureclaim() */
vholdl(vp);
AFS_GUNLOCK();
*slept = 1;
/* use the interlock while locking, so no one else can DOOM this */
ilock_vnode(vp);
vgone(vp);
unlock_vnode(vp);
vdrop(vp);
AFS_GLOCK();
return 0;
}
/* ARGSUSED */
int
ext2fs_mknod(void *v)
{
struct vop_mknod_v3_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
struct vattr *vap = ap->a_vap;
struct vnode **vpp = ap->a_vpp;
struct inode *ip;
int error;
struct mount *mp;
ino_t ino;
if ((error = ext2fs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
ap->a_dvp, vpp, ap->a_cnp)) != 0)
return (error);
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
ip = VTOI(*vpp);
mp = (*vpp)->v_mount;
ino = ip->i_number;
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
if (vap->va_rdev != VNOVAL) {
/*
* Want to be able to use this to make badblock
* inodes, so don't truncate the dev number.
*/
ip->i_din.e2fs_din->e2di_rdev = h2fs32(vap->va_rdev);
}
/*
* Remove inode so that it will be reloaded by VFS_VGET and
* checked to see if it is an alias of an existing entry in
* the inode cache.
*/
(*vpp)->v_type = VNON;
VOP_UNLOCK(*vpp);
vgone(*vpp);
error = VFS_VGET(mp, ino, vpp);
if (error != 0) {
*vpp = NULL;
return (error);
}
VOP_UNLOCK(*vpp);
return (0);
}
static int
unionfs_revoke(void *v)
{
struct vop_revoke_args *ap = v;
struct unionfs_node *unp;
struct vnode *tvp;
int error;
unp = VTOUNIONFS(ap->a_vp);
tvp = (unp->un_uppervp != NULLVP ? unp->un_uppervp : unp->un_lowervp);
error = VOP_REVOKE(tvp, ap->a_flags);
if (error == 0) {
vgone(ap->a_vp); /* ??? */
}
return error;
}
int
osi_TryEvictVCache(struct vcache *avc, int *slept, int defersleep) {
*slept = 0;
if (!VREFCOUNT_GT(avc,0)
&& avc->opens == 0 && (avc->f.states & CUnlinkedDel) == 0) {
/*
* vgone() reclaims the vnode, which calls afs_FlushVCache(),
* then it puts the vnode on the free list.
* If we don't do this we end up with a cleaned vnode that's
* not on the free list.
*/
AFS_GUNLOCK();
vgone(AFSTOV(avc));
AFS_GLOCK();
return 1;
}
return 0;
}
/* Unmount the filesystem described by mp. */
int
smbfs_unmount(struct mount *mp, int mntflags)
{
struct lwp *l = curlwp;
struct smbmount *smp = VFSTOSMBFS(mp);
struct smb_cred scred;
struct vnode *smbfs_rootvp = SMBTOV(smp->sm_root);
int error, flags;
SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
flags = 0;
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if (smbfs_rootvp->v_usecount > 1 && (mntflags & MNT_FORCE) == 0)
return EBUSY;
/* Flush all vnodes.
* Keep trying to flush the vnode list for the mount while
* some are still busy and we are making progress towards
* making them not busy. This is needed because smbfs vnodes
* reference their parent directory but may appear after their
* parent in the list; one pass over the vnode list is not
* sufficient in this case. */
do {
smp->sm_didrele = 0;
error = vflush(mp, smbfs_rootvp, flags);
} while (error == EBUSY && smp->sm_didrele != 0);
if (error)
return error;
vgone(smbfs_rootvp);
smb_makescred(&scred, l, l->l_cred);
smb_share_lock(smp->sm_share);
smb_share_put(smp->sm_share, &scred);
mp->mnt_data = NULL;
hashdone(smp->sm_hash, HASH_LIST, smp->sm_hashlen);
mutex_destroy(&smp->sm_hashlock);
free(smp, M_SMBFSDATA);
return 0;
}
/* ARGSUSED */
static int
ext2_mknod(struct vop_mknod_args *ap)
{
struct vattr *vap = ap->a_vap;
struct vnode **vpp = ap->a_vpp;
struct inode *ip;
ino_t ino;
int error;
error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
ap->a_dvp, vpp, ap->a_cnp);
if (error)
return (error);
ip = VTOI(*vpp);
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
if (vap->va_rdev != VNOVAL) {
/*
* Want to be able to use this to make badblock
* inodes, so don't truncate the dev number.
*/
ip->i_rdev = vap->va_rdev;
}
/*
* Remove inode, then reload it through VFS_VGET so it is
* checked to see if it is an alias of an existing entry in
* the inode cache. XXX I don't believe this is necessary now.
*/
(*vpp)->v_type = VNON;
ino = ip->i_number; /* Save this before vgone() invalidates ip. */
vgone(*vpp);
vput(*vpp);
error = VFS_VGET(ap->a_dvp->v_mount, ino, LK_EXCLUSIVE, vpp);
if (error) {
*vpp = NULL;
return (error);
}
return (0);
}
/*
* Disable a pseudofs node, and free all vnodes associated with it
*/
int
pfs_disable(struct pfs_node *pn)
{
struct pfs_vdata *pvd, *prev;
if (pn->pn_flags & PFS_DISABLED)
return (0);
mtx_lock(&pfs_vncache_mutex);
pn->pn_flags |= PFS_DISABLED;
/* see the comment about the double loop in pfs_exit() */
/* XXX linear search... not very efficient */
for (pvd = pfs_vncache; pvd != NULL; pvd = pvd->pvd_next) {
while (pvd != NULL && pvd->pvd_pn == pn) {
prev = pvd->pvd_prev;
vgone(pvd->pvd_vnode);
pvd = prev ? prev->pvd_next : pfs_vncache;
}
if (pvd == NULL)
break;
}
mtx_unlock(&pfs_vncache_mutex);
return (0);
}
/*
* Free all vnodes associated with a defunct process
*/
static void
pfs_exit(struct proc *p)
{
struct pfs_vdata *pvd, *prev;
mtx_lock(&pfs_vncache_mutex);
/*
* The double loop is necessary because vgone() indirectly
* calls pfs_vncache_free() which frees pvd, so we have to
* backtrace one step every time we free a vnode.
*/
/* XXX linear search... not very efficient */
for (pvd = pfs_vncache; pvd != NULL; pvd = pvd->pvd_next) {
while (pvd != NULL && pvd->pvd_pid == p->p_pid) {
prev = pvd->pvd_prev;
vgone(pvd->pvd_vnode);
pvd = prev ? prev->pvd_next : pfs_vncache;
}
if (pvd == NULL)
break;
}
mtx_unlock(&pfs_vncache_mutex);
}
int
fdesc_unmount(struct mount *mp, int mntflags)
{
int error;
int flags = 0;
struct vnode *rtvp = mp->mnt_data;
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if (rtvp->v_usecount > 1 && (mntflags & MNT_FORCE) == 0)
return (EBUSY);
if ((error = vflush(mp, rtvp, flags)) != 0)
return (error);
/*
* Blow it away for future re-use
*/
vgone(rtvp);
mp->mnt_data = NULL;
return (0);
}
/*
* Last reference to an node. If necessary, write or delete it.
*
* hpfs_inactive(struct vnode *a_vp)
*/
int
hpfs_inactive(struct vop_inactive_args *ap)
{
struct vnode *vp = ap->a_vp;
struct hpfsnode *hp = VTOHP(vp);
int error;
dprintf(("hpfs_inactive(0x%x): \n", hp->h_no));
if (hp->h_flag & H_CHANGE) {
dprintf(("hpfs_inactive: node changed, update\n"));
error = hpfs_update (hp);
if (error)
return (error);
}
if (hp->h_flag & H_PARCHANGE) {
dprintf(("hpfs_inactive: parent node changed, update\n"));
error = hpfs_updateparent (hp);
if (error)
return (error);
}
if (prtactive && vp->v_sysref.refcnt > 1)
vprint("hpfs_inactive: pushing active", vp);
if (hp->h_flag & H_INVAL) {
#if defined(__DragonFly__)
vrecycle(vp);
#else /* defined(__NetBSD__) */
vgone(vp);
#endif
return (0);
}
return (0);
}
/*
* Look up a vnode/nfsnode by file handle and store the pointer in *npp.
* Callers must check for mount points!!
* An error number is returned.
*/
int
nfs_nget(struct mount *mnt, nfsfh_t *fh, int fhsize, struct nfsnode **npp)
{
struct nfsmount *nmp;
struct nfsnode *np, find, *np2;
struct vnode *vp, *nvp;
struct proc *p = curproc; /* XXX */
int error;
nmp = VFSTONFS(mnt);
loop:
rw_enter_write(&nfs_hashlock);
find.n_fhp = fh;
find.n_fhsize = fhsize;
np = RB_FIND(nfs_nodetree, &nmp->nm_ntree, &find);
if (np != NULL) {
rw_exit_write(&nfs_hashlock);
vp = NFSTOV(np);
error = vget(vp, LK_EXCLUSIVE, p);
if (error)
goto loop;
*npp = np;
return (0);
}
/*
* getnewvnode() could recycle a vnode, potentially formerly
* owned by NFS. This will cause a VOP_RECLAIM() to happen,
* which will cause recursive locking, so we unlock before
* calling getnewvnode() lock again afterwards, but must check
* to see if this nfsnode has been added while we did not hold
* the lock.
*/
rw_exit_write(&nfs_hashlock);
error = getnewvnode(VT_NFS, mnt, &nfs_vops, &nvp);
/* note that we don't have this vnode set up completely yet */
rw_enter_write(&nfs_hashlock);
if (error) {
*npp = NULL;
rw_exit_write(&nfs_hashlock);
return (error);
}
nvp->v_flag |= VLARVAL;
np = RB_FIND(nfs_nodetree, &nmp->nm_ntree, &find);
if (np != NULL) {
vgone(nvp);
rw_exit_write(&nfs_hashlock);
goto loop;
}
vp = nvp;
np = pool_get(&nfs_node_pool, PR_WAITOK | PR_ZERO);
vp->v_data = np;
/* we now have an nfsnode on this vnode */
vp->v_flag &= ~VLARVAL;
np->n_vnode = vp;
rw_init(&np->n_commitlock, "nfs_commitlk");
/*
* Are we getting the root? If so, make sure the vnode flags
* are correct
*/
if ((fhsize == nmp->nm_fhsize) && !bcmp(fh, nmp->nm_fh, fhsize)) {
if (vp->v_type == VNON)
vp->v_type = VDIR;
vp->v_flag |= VROOT;
}
np->n_fhp = &np->n_fh;
bcopy(fh, np->n_fhp, fhsize);
np->n_fhsize = fhsize;
np2 = RB_INSERT(nfs_nodetree, &nmp->nm_ntree, np);
KASSERT(np2 == NULL);
np->n_accstamp = -1;
rw_exit(&nfs_hashlock);
*npp = np;
return (0);
}
int
udf_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
{
struct buf *bp;
struct vnode *devvp;
struct umount *ump;
struct proc *p;
struct vnode *vp, *nvp;
struct unode *up;
struct extfile_entry *xfe;
struct file_entry *fe;
int error, sector, size;
p = curproc;
bp = NULL;
*vpp = NULL;
ump = VFSTOUDFFS(mp);
/* See if we already have this in the cache */
if ((error = udf_hashlookup(ump, ino, LK_EXCLUSIVE, vpp)) != 0)
return (error);
if (*vpp != NULL)
return (0);
/*
* Allocate memory and check the tag id's before grabbing a new
* vnode, since it's hard to roll back if there is a problem.
*/
up = pool_get(&unode_pool, PR_WAITOK | PR_ZERO);
/*
* Copy in the file entry. Per the spec, the size can only be 1 block.
*/
sector = ino;
devvp = ump->um_devvp;
udf_vat_map(ump, §or);
if ((error = RDSECTOR(devvp, sector, ump->um_bsize, &bp)) != 0) {
printf("Cannot read sector %d\n", sector);
pool_put(&unode_pool, up);
if (bp != NULL)
brelse(bp);
return (error);
}
xfe = (struct extfile_entry *)bp->b_data;
fe = (struct file_entry *)bp->b_data;
error = udf_checktag(&xfe->tag, TAGID_EXTFENTRY);
if (error == 0) {
size = letoh32(xfe->l_ea) + letoh32(xfe->l_ad);
} else {
error = udf_checktag(&fe->tag, TAGID_FENTRY);
if (error) {
printf("Invalid file entry!\n");
pool_put(&unode_pool, up);
if (bp != NULL)
brelse(bp);
return (ENOMEM);
} else
size = letoh32(fe->l_ea) + letoh32(fe->l_ad);
}
/* Allocate max size of FE/XFE. */
up->u_fentry = malloc(size + UDF_EXTFENTRY_SIZE, M_UDFFENTRY, M_NOWAIT | M_ZERO);
if (up->u_fentry == NULL) {
pool_put(&unode_pool, up);
if (bp != NULL)
brelse(bp);
return (ENOMEM); /* Cannot allocate file entry block */
}
if (udf_checktag(&xfe->tag, TAGID_EXTFENTRY) == 0)
bcopy(bp->b_data, up->u_fentry, size + UDF_EXTFENTRY_SIZE);
else
bcopy(bp->b_data, up->u_fentry, size + UDF_FENTRY_SIZE);
brelse(bp);
bp = NULL;
if ((error = udf_allocv(mp, &vp, p))) {
free(up->u_fentry, M_UDFFENTRY);
pool_put(&unode_pool, up);
return (error); /* Error from udf_allocv() */
}
up->u_vnode = vp;
up->u_ino = ino;
up->u_devvp = ump->um_devvp;
up->u_dev = ump->um_dev;
up->u_ump = ump;
vp->v_data = up;
vref(ump->um_devvp);
lockinit(&up->u_lock, PINOD, "unode", 0, 0);
/*
* udf_hashins() will lock the vnode for us.
*/
udf_hashins(up);
switch (up->u_fentry->icbtag.file_type) {
default:
printf("Unrecognized file type (%d)\n", vp->v_type);
vp->v_type = VREG;
break;
case UDF_ICB_FILETYPE_DIRECTORY:
vp->v_type = VDIR;
break;
case UDF_ICB_FILETYPE_BLOCKDEVICE:
vp->v_type = VBLK;
break;
case UDF_ICB_FILETYPE_CHARDEVICE:
vp->v_type = VCHR;
break;
case UDF_ICB_FILETYPE_FIFO:
vp->v_type = VFIFO;
break;
case UDF_ICB_FILETYPE_SOCKET:
vp->v_type = VSOCK;
break;
case UDF_ICB_FILETYPE_SYMLINK:
vp->v_type = VLNK;
break;
case UDF_ICB_FILETYPE_RANDOMACCESS:
case UDF_ICB_FILETYPE_REALTIME:
case UDF_ICB_FILETYPE_UNKNOWN:
vp->v_type = VREG;
break;
}
/* check if this is a vnode alias */
if ((nvp = checkalias(vp, up->u_dev, ump->um_mountp)) != NULL) {
printf("found a vnode alias\n");
/*
* Discard unneeded vnode, but save its udf_node.
* Note that the lock is carried over in the udf_node
*/
nvp->v_data = vp->v_data;
vp->v_data = NULL;
vp->v_op = spec_vnodeop_p;
vrele(vp);
vgone(vp);
/*
* Reinitialize aliased inode.
*/
vp = nvp;
ump->um_devvp = vp;
}
*vpp = vp;
return (0);
}
int
udf_vget(struct mount *mp, ino_t ino, int flags, struct vnode **vpp)
{
struct buf *bp;
struct vnode *devvp;
struct udf_mnt *udfmp;
struct thread *td;
struct vnode *vp;
struct udf_node *unode;
struct file_entry *fe;
int error, sector, size;
error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL);
if (error || *vpp != NULL)
return (error);
/*
* We must promote to an exclusive lock for vnode creation. This
* can happen if lookup is passed LOCKSHARED.
*/
if ((flags & LK_TYPE_MASK) == LK_SHARED) {
flags &= ~LK_TYPE_MASK;
flags |= LK_EXCLUSIVE;
}
/*
* We do not lock vnode creation as it is believed to be too
* expensive for such rare case as simultaneous creation of vnode
* for same ino by different processes. We just allow them to race
* and check later to decide who wins. Let the race begin!
*/
td = curthread;
udfmp = VFSTOUDFFS(mp);
unode = uma_zalloc(udf_zone_node, M_WAITOK | M_ZERO);
if ((error = udf_allocv(mp, &vp, td))) {
printf("Error from udf_allocv\n");
uma_zfree(udf_zone_node, unode);
return (error);
}
unode->i_vnode = vp;
unode->hash_id = ino;
unode->udfmp = udfmp;
vp->v_data = unode;
lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
error = insmntque(vp, mp);
if (error != 0) {
uma_zfree(udf_zone_node, unode);
return (error);
}
error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL);
if (error || *vpp != NULL)
return (error);
/*
* Copy in the file entry. Per the spec, the size can only be 1 block.
*/
sector = ino + udfmp->part_start;
devvp = udfmp->im_devvp;
if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) {
printf("Cannot read sector %d\n", sector);
vgone(vp);
vput(vp);
brelse(bp);
*vpp = NULL;
return (error);
}
fe = (struct file_entry *)bp->b_data;
if (udf_checktag(&fe->tag, TAGID_FENTRY)) {
printf("Invalid file entry!\n");
vgone(vp);
vput(vp);
brelse(bp);
*vpp = NULL;
return (ENOMEM);
}
size = UDF_FENTRY_SIZE + le32toh(fe->l_ea) + le32toh(fe->l_ad);
unode->fentry = malloc(size, M_UDFFENTRY, M_NOWAIT | M_ZERO);
if (unode->fentry == NULL) {
printf("Cannot allocate file entry block\n");
vgone(vp);
vput(vp);
brelse(bp);
*vpp = NULL;
return (ENOMEM);
}
bcopy(bp->b_data, unode->fentry, size);
brelse(bp);
bp = NULL;
switch (unode->fentry->icbtag.file_type) {
default:
vp->v_type = VBAD;
break;
case 4:
vp->v_type = VDIR;
break;
case 5:
vp->v_type = VREG;
break;
case 6:
vp->v_type = VBLK;
break;
case 7:
vp->v_type = VCHR;
break;
case 9:
vp->v_type = VFIFO;
vp->v_op = &udf_fifoops;
break;
case 10:
vp->v_type = VSOCK;
break;
case 12:
vp->v_type = VLNK;
break;
}
if (vp->v_type != VFIFO)
VN_LOCK_ASHARE(vp);
if (ino == udf_getid(&udfmp->root_icb))
vp->v_vflag |= VV_ROOT;
*vpp = vp;
return (0);
}
static int
smbfs_node_alloc(struct mount *mp, struct vnode *dvp, const char *dirnm,
int dirlen, const char *name, int nmlen, char sep,
struct smbfattr *fap, struct vnode **vpp)
{
struct vattr vattr;
struct thread *td = curthread; /* XXX */
struct smbmount *smp = VFSTOSMBFS(mp);
struct smbnode *np, *dnp;
struct vnode *vp, *vp2;
struct smbcmp sc;
char *p, *rpath;
int error, rplen;
sc.n_parent = dvp;
sc.n_nmlen = nmlen;
sc.n_name = name;
if (smp->sm_root != NULL && dvp == NULL) {
SMBERROR("do not allocate root vnode twice!\n");
return EINVAL;
}
if (nmlen == 2 && bcmp(name, "..", 2) == 0) {
if (dvp == NULL)
return EINVAL;
vp = VTOSMB(VTOSMB(dvp)->n_parent)->n_vnode;
error = vget(vp, LK_EXCLUSIVE, td);
if (error == 0)
*vpp = vp;
return error;
} else if (nmlen == 1 && name[0] == '.') {
SMBERROR("do not call me with dot!\n");
return EINVAL;
}
dnp = dvp ? VTOSMB(dvp) : NULL;
if (dnp == NULL && dvp != NULL) {
vprint("smbfs_node_alloc: dead parent vnode", dvp);
return EINVAL;
}
error = vfs_hash_get(mp, smbfs_hash(name, nmlen), LK_EXCLUSIVE, td,
vpp, smbfs_vnode_cmp, &sc);
if (error)
return (error);
if (*vpp) {
np = VTOSMB(*vpp);
/* Force cached attributes to be refreshed if stale. */
(void)VOP_GETATTR(*vpp, &vattr, td->td_ucred);
/*
* If the file type on the server is inconsistent with
* what it was when we created the vnode, kill the
* bogus vnode now and fall through to the code below
* to create a new one with the right type.
*/
if (((*vpp)->v_type == VDIR &&
(np->n_dosattr & SMB_FA_DIR) == 0) ||
((*vpp)->v_type == VREG &&
(np->n_dosattr & SMB_FA_DIR) != 0)) {
vgone(*vpp);
vput(*vpp);
}
else {
SMBVDEBUG("vnode taken from the hashtable\n");
return (0);
}
}
/*
* If we don't have node attributes, then it is an explicit lookup
* for an existing vnode.
*/
if (fap == NULL)
return ENOENT;
error = getnewvnode("smbfs", mp, &smbfs_vnodeops, vpp);
if (error)
return (error);
vp = *vpp;
np = malloc(sizeof *np, M_SMBNODE, M_WAITOK | M_ZERO);
rplen = dirlen;
if (sep != '\0')
rplen++;
rplen += nmlen;
rpath = malloc(rplen + 1, M_SMBNODENAME, M_WAITOK);
p = rpath;
bcopy(dirnm, p, dirlen);
p += dirlen;
if (sep != '\0')
*p++ = sep;
if (name != NULL) {
bcopy(name, p, nmlen);
p += nmlen;
}
*p = '\0';
MPASS(p == rpath + rplen);
lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
/* Vnode initialization */
vp->v_type = fap->fa_attr & SMB_FA_DIR ? VDIR : VREG;
vp->v_data = np;
np->n_vnode = vp;
np->n_mount = VFSTOSMBFS(mp);
np->n_rpath = rpath;
np->n_rplen = rplen;
np->n_nmlen = nmlen;
np->n_name = smbfs_name_alloc(name, nmlen);
np->n_ino = fap->fa_ino;
if (dvp) {
ASSERT_VOP_LOCKED(dvp, "smbfs_node_alloc");
np->n_parent = dvp;
np->n_parentino = VTOSMB(dvp)->n_ino;
if (/*vp->v_type == VDIR &&*/ (dvp->v_vflag & VV_ROOT) == 0) {
vref(dvp);
np->n_flag |= NREFPARENT;
}
} else if (vp->v_type == VREG)
SMBERROR("new vnode '%s' born without parent ?\n", np->n_name);
error = insmntque(vp, mp);
if (error) {
free(np, M_SMBNODE);
return (error);
}
error = vfs_hash_insert(vp, smbfs_hash(name, nmlen), LK_EXCLUSIVE,
td, &vp2, smbfs_vnode_cmp, &sc);
if (error)
return (error);
if (vp2 != NULL)
*vpp = vp2;
return (0);
}
static int
smbfs_node_alloc(struct mount *mp, struct vnode *dvp,
const char *name, int nmlen, struct smbfattr *fap, struct vnode **vpp)
{
struct vattr vattr;
struct thread *td = curthread; /* XXX */
struct smbmount *smp = VFSTOSMBFS(mp);
struct smbnode_hashhead *nhpp;
struct smbnode *np, *np2, *dnp;
struct vnode *vp;
u_long hashval;
int error;
*vpp = NULL;
if (smp->sm_root != NULL && dvp == NULL) {
SMBERROR("do not allocate root vnode twice!\n");
return EINVAL;
}
if (nmlen == 2 && bcmp(name, "..", 2) == 0) {
if (dvp == NULL)
return EINVAL;
vp = VTOSMB(VTOSMB(dvp)->n_parent)->n_vnode;
error = vget(vp, LK_EXCLUSIVE, td);
if (error == 0)
*vpp = vp;
return error;
} else if (nmlen == 1 && name[0] == '.') {
SMBERROR("do not call me with dot!\n");
return EINVAL;
}
dnp = dvp ? VTOSMB(dvp) : NULL;
if (dnp == NULL && dvp != NULL) {
vprint("smbfs_node_alloc: dead parent vnode", dvp);
return EINVAL;
}
hashval = smbfs_hash(name, nmlen);
retry:
smbfs_hash_lock(smp);
loop:
nhpp = SMBFS_NOHASH(smp, hashval);
LIST_FOREACH(np, nhpp, n_hash) {
vp = SMBTOV(np);
if (np->n_parent != dvp ||
np->n_nmlen != nmlen || bcmp(name, np->n_name, nmlen) != 0)
continue;
VI_LOCK(vp);
smbfs_hash_unlock(smp);
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td) != 0)
goto retry;
/* Force cached attributes to be refreshed if stale. */
(void)VOP_GETATTR(vp, &vattr, td->td_ucred);
/*
* If the file type on the server is inconsistent with
* what it was when we created the vnode, kill the
* bogus vnode now and fall through to the code below
* to create a new one with the right type.
*/
if ((vp->v_type == VDIR && (np->n_dosattr & SMB_FA_DIR) == 0) ||
(vp->v_type == VREG && (np->n_dosattr & SMB_FA_DIR) != 0)) {
vgone(vp);
vput(vp);
break;
}
*vpp = vp;
return 0;
}
/* ARGSUSED */
int
ufs_mknod(void *v)
{
struct vop_mknod_v3_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
struct vattr *vap;
struct vnode **vpp;
struct inode *ip;
int error;
struct mount *mp;
ino_t ino;
struct ufs_lookup_results *ulr;
vap = ap->a_vap;
vpp = ap->a_vpp;
/* XXX should handle this material another way */
ulr = &VTOI(ap->a_dvp)->i_crap;
UFS_CHECK_CRAPCOUNTER(VTOI(ap->a_dvp));
/*
* UFS_WAPBL_BEGIN1(dvp->v_mount, dvp) performed by successful
* ufs_makeinode
*/
fstrans_start(ap->a_dvp->v_mount, FSTRANS_SHARED);
if ((error =
ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
ap->a_dvp, ulr, vpp, ap->a_cnp)) != 0)
goto out;
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
ip = VTOI(*vpp);
mp = (*vpp)->v_mount;
ino = ip->i_number;
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
if (vap->va_rdev != VNOVAL) {
struct ufsmount *ump = ip->i_ump;
/*
* Want to be able to use this to make badblock
* inodes, so don't truncate the dev number.
*/
if (ump->um_fstype == UFS1)
ip->i_ffs1_rdev = ufs_rw32(vap->va_rdev,
UFS_MPNEEDSWAP(ump));
else
ip->i_ffs2_rdev = ufs_rw64(vap->va_rdev,
UFS_MPNEEDSWAP(ump));
}
UFS_WAPBL_UPDATE(*vpp, NULL, NULL, 0);
UFS_WAPBL_END1(ap->a_dvp->v_mount, ap->a_dvp);
/*
* Remove inode so that it will be reloaded by vcache_get and
* checked to see if it is an alias of an existing entry in
* the inode cache.
*/
(*vpp)->v_type = VNON;
VOP_UNLOCK(*vpp);
vgone(*vpp);
error = vcache_get(mp, &ino, sizeof(ino), vpp);
out:
fstrans_done(ap->a_dvp->v_mount);
if (error != 0) {
*vpp = NULL;
return (error);
}
return (0);
}
int
fdesc_allocvp(fdntype ftype, unsigned fd_fd, int ix, struct mount *mp,
struct vnode **vpp)
{
struct fdescmount *fmp;
struct fdhashhead *fc;
struct fdescnode *fd, *fd2;
struct vnode *vp, *vp2;
struct thread *td;
int error = 0;
td = curthread;
fc = FD_NHASH(ix);
loop:
mtx_lock(&fdesc_hashmtx);
/*
* If a forced unmount is progressing, we need to drop it. The flags are
* protected by the hashmtx.
*/
fmp = (struct fdescmount *)mp->mnt_data;
if (fmp == NULL || fmp->flags & FMNT_UNMOUNTF) {
mtx_unlock(&fdesc_hashmtx);
return (-1);
}
LIST_FOREACH(fd, fc, fd_hash) {
if (fd->fd_ix == ix && fd->fd_vnode->v_mount == mp) {
/* Get reference to vnode in case it's being free'd */
vp = fd->fd_vnode;
VI_LOCK(vp);
mtx_unlock(&fdesc_hashmtx);
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td))
goto loop;
*vpp = vp;
return (0);
}
}
mtx_unlock(&fdesc_hashmtx);
fd = malloc(sizeof(struct fdescnode), M_TEMP, M_WAITOK);
error = getnewvnode("fdescfs", mp, &fdesc_vnodeops, &vp);
if (error) {
free(fd, M_TEMP);
return (error);
}
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
vp->v_data = fd;
fd->fd_vnode = vp;
fd->fd_type = ftype;
fd->fd_fd = fd_fd;
fd->fd_ix = ix;
error = insmntque1(vp, mp, fdesc_insmntque_dtr, NULL);
if (error != 0) {
*vpp = NULLVP;
return (error);
}
/* Make sure that someone didn't beat us when inserting the vnode. */
mtx_lock(&fdesc_hashmtx);
/*
* If a forced unmount is progressing, we need to drop it. The flags are
* protected by the hashmtx.
*/
fmp = (struct fdescmount *)mp->mnt_data;
if (fmp == NULL || fmp->flags & FMNT_UNMOUNTF) {
mtx_unlock(&fdesc_hashmtx);
vgone(vp);
vput(vp);
*vpp = NULLVP;
return (-1);
}
LIST_FOREACH(fd2, fc, fd_hash) {
if (fd2->fd_ix == ix && fd2->fd_vnode->v_mount == mp) {
/* Get reference to vnode in case it's being free'd */
vp2 = fd2->fd_vnode;
VI_LOCK(vp2);
mtx_unlock(&fdesc_hashmtx);
error = vget(vp2, LK_EXCLUSIVE | LK_INTERLOCK, td);
/* Someone beat us, dec use count and wait for reclaim */
vgone(vp);
vput(vp);
/* If we didn't get it, return no vnode. */
if (error)
vp2 = NULLVP;
*vpp = vp2;
return (error);
}
}
/* If we came here, we can insert it safely. */
LIST_INSERT_HEAD(fc, fd, fd_hash);
mtx_unlock(&fdesc_hashmtx);
*vpp = vp;
return (0);
}
/*
* Initialize the vnode associated with a new inode, handle aliased
* vnodes.
*/
int
ufs_vinit(struct mount *mntp, struct vops *specops, struct vops *fifoops,
struct vnode **vpp)
{
struct inode *ip;
struct vnode *vp, *nvp;
struct timeval mtv;
vp = *vpp;
ip = VTOI(vp);
switch(vp->v_type = IFTOVT(DIP(ip, mode))) {
case VCHR:
case VBLK:
vp->v_op = specops;
if ((nvp = checkalias(vp, DIP(ip, rdev), mntp)) != NULL) {
/*
* Discard unneeded vnode, but save its inode.
* Note that the lock is carried over in the inode
* to the replacement vnode.
*/
nvp->v_data = vp->v_data;
vp->v_data = NULL;
vp->v_op = &spec_vops;
#ifdef VFSLCKDEBUG
vp->v_flag &= ~VLOCKSWORK;
#endif
vrele(vp);
vgone(vp);
/*
* Reinitialize aliased inode.
*/
vp = nvp;
ip->i_vnode = vp;
}
break;
case VFIFO:
#ifdef FIFO
vp->v_op = fifoops;
break;
#else
return (EOPNOTSUPP);
#endif
case VNON:
case VBAD:
case VSOCK:
case VLNK:
case VDIR:
case VREG:
break;
}
if (ip->i_number == ROOTINO)
vp->v_flag |= VROOT;
/*
* Initialize modrev times
*/
getmicrouptime(&mtv);
SETHIGH(ip->i_modrev, mtv.tv_sec);
SETLOW(ip->i_modrev, mtv.tv_usec * 4294);
*vpp = vp;
return (0);
}
int
fusefs_mknod(void *v)
{
struct vop_mknod_args *ap = v;
struct componentname *cnp = ap->a_cnp;
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
struct vattr *vap = ap->a_vap;
struct proc *p = cnp->cn_proc;
struct vnode *tdp = NULL;
struct fusefs_mnt *fmp;
struct fusefs_node *ip;
struct fusebuf *fbuf;
int error = 0;
ip = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_MKNOD)) {
error = ENOSYS;
goto out;
}
fbuf = fb_setup(cnp->cn_namelen + 1, ip->ufs_ino.i_number,
FBT_MKNOD, p);
fbuf->fb_io_mode = MAKEIMODE(vap->va_type, vap->va_mode);
if (vap->va_rdev != VNOVAL)
fbuf->fb_io_rdev = vap->va_rdev;
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_MKNOD;
fb_delete(fbuf);
goto out;
}
if ((error = VFS_VGET(fmp->mp, fbuf->fb_ino, &tdp))) {
fb_delete(fbuf);
goto out;
}
tdp->v_type = IFTOVT(fbuf->fb_io_mode);
VTOI(tdp)->vtype = tdp->v_type;
if (dvp != NULL && dvp->v_type == VDIR)
VTOI(tdp)->parent = ip->ufs_ino.i_number;
*vpp = tdp;
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
fb_delete(fbuf);
vput(ap->a_dvp);
/* Remove inode so that it will be reloaded by VFS_VGET and
* checked to see if it is an alias of an existing entry in
* the inode cache.
*/
vput(*vpp);
(*vpp)->v_type = VNON;
vgone(*vpp);
*vpp = NULL;
return (0);
out:
vput(ap->a_dvp);
return (error);
}