/*
* Close a file or directory
*/
static int
pfs_close(struct vop_close_args *va)
{
struct vnode *vn = va->a_vp;
struct pfs_vdata *pvd = vn->v_data;
struct pfs_node *pn = pvd->pvd_pn;
struct proc *proc;
int error;
PFS_TRACE(("%s", pn->pn_name));
pfs_assert_not_owned(pn);
/*
* Do nothing unless this is the last close and the node has a
* last-close handler.
*/
if (vrefcnt(vn) > 1 || pn->pn_close == NULL)
PFS_RETURN (0);
if (pvd->pvd_pid != NO_PID) {
proc = pfind(pvd->pvd_pid);
} else {
proc = NULL;
}
error = pn_close(va->a_td, proc, pn);
if (proc != NULL)
PROC_UNLOCK(proc);
PFS_RETURN (error);
}
static __inline
struct vnode *
union_lock_upper(struct union_node *un, struct thread *td)
{
struct vnode *uppervp;
if ((uppervp = un->un_uppervp) != NULL) {
VREF(uppervp);
vn_lock(uppervp, LK_EXCLUSIVE | LK_CANRECURSE | LK_RETRY, td);
}
KASSERT((uppervp == NULL || vrefcnt(uppervp) > 0), ("uppervp usecount is 0"));
return(uppervp);
}
int
msdosfs_inactive(struct vop_inactive_args *ap)
{
struct vnode *vp = ap->a_vp;
struct denode *dep = VTODE(vp);
int error = 0;
#ifdef MSDOSFS_DEBUG
printf("msdosfs_inactive(): dep %p, de_Name[0] %x\n", dep, dep->de_Name[0]);
#endif
/*
* Ignore denodes related to stale file handles.
*/
if (dep->de_Name[0] == SLOT_DELETED || dep->de_Name[0] == SLOT_EMPTY)
goto out;
/*
* If the file has been deleted and it is on a read/write
* filesystem, then truncate the file, and mark the directory slot
* as empty. (This may not be necessary for the dos filesystem.)
*/
#ifdef MSDOSFS_DEBUG
printf("msdosfs_inactive(): dep %p, refcnt %ld, mntflag %llx, MNT_RDONLY %llx\n",
dep, dep->de_refcnt, (unsigned long long)vp->v_mount->mnt_flag,
(unsigned long long)MNT_RDONLY);
#endif
if (dep->de_refcnt <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
error = detrunc(dep, (u_long) 0, 0, NOCRED);
dep->de_flag |= DE_UPDATE;
dep->de_Name[0] = SLOT_DELETED;
}
deupdat(dep, 0);
out:
/*
* If we are done with the denode, reclaim it
* so that it can be reused immediately.
*/
#ifdef MSDOSFS_DEBUG
printf("msdosfs_inactive(): v_usecount %d, de_Name[0] %x\n",
vrefcnt(vp), dep->de_Name[0]);
#endif
if (dep->de_Name[0] == SLOT_DELETED || dep->de_Name[0] == SLOT_EMPTY)
vrecycle(vp);
return (error);
}
/*
* Increasing refcount of lower vnode is needed at least for the case
* when lower FS is NFS to do sillyrename if the file is in use.
* Unfortunately v_usecount is incremented in many places in
* the kernel and, as such, there may be races that result in
* the NFS client doing an extraneous silly rename, but that seems
* preferable to not doing a silly rename when it is needed.
*/
static int
null_remove(struct vop_remove_args *ap)
{
int retval, vreleit;
struct vnode *lvp;
if (vrefcnt(ap->a_vp) > 1) {
lvp = NULLVPTOLOWERVP(ap->a_vp);
VREF(lvp);
vreleit = 1;
} else
vreleit = 0;
retval = null_bypass(&ap->a_gen);
if (vreleit != 0)
vrele(lvp);
return (retval);
}
int
nwfs_sysctl_vnprint(SYSCTL_HANDLER_ARGS) {
struct nwnode *np;
struct nwnode_hash_head *nhpp;
struct vnode *vp;
int i;
if (nwfs_debuglevel == 0)
return 0;
printf("Name:uc:hc:fid:pfid\n");
for(i = 0; i <= nwnodehash; i++) {
nhpp = &nwhashtbl[i];
LIST_FOREACH(np, nhpp, n_hash) {
vp = NWTOV(np);
vprint("", vp);
printf("%s:%d:%d:%d:%d\n",np->n_name,vrefcnt(vp),
vp->v_holdcnt,np->n_fid.f_id, np->n_fid.f_parent);
}
}
/*
* Increasing refcount of lower vnode is needed at least for the case
* when lower FS is NFS to do sillyrename if the file is in use.
* Unfortunately v_usecount is incremented in many places in
* the kernel and, as such, there may be races that result in
* the NFS client doing an extraneous silly rename, but that seems
* preferable to not doing a silly rename when it is needed.
*/
static int
crypto_remove(struct vop_remove_args *ap)
{
int retval, vreleit;
struct vnode *lvp, *vp;
vp = ap->a_vp;
if (vrefcnt(vp) > 1) {
lvp = NULLVPTOLOWERVP(vp);
VREF(lvp);
vreleit = 1;
} else
vreleit = 0;
VTONULL(vp)->crypto_flags |= NULLV_DROP;
retval = crypto_bypass(&ap->a_gen);
if (vreleit != 0)
vrele(lvp);
return (retval);
}
static int
smbfs_mount(struct mount *mp)
{
struct smbmount *smp = NULL;
struct smb_vc *vcp;
struct smb_share *ssp = NULL;
struct vnode *vp;
struct thread *td;
struct smb_dev *dev;
struct smb_cred *scred;
int error, v;
char *pc, *pe;
dev = NULL;
td = curthread;
if (mp->mnt_flag & (MNT_UPDATE | MNT_ROOTFS))
return EOPNOTSUPP;
if (vfs_filteropt(mp->mnt_optnew, smbfs_opts)) {
vfs_mount_error(mp, "%s", "Invalid option");
return (EINVAL);
}
scred = smbfs_malloc_scred();
smb_makescred(scred, td, td->td_ucred);
/* Ask userspace of `fd`, the file descriptor of this session */
if (1 != vfs_scanopt(mp->mnt_optnew, "fd", "%d", &v)) {
vfs_mount_error(mp, "No fd option");
smbfs_free_scred(scred);
return (EINVAL);
}
error = smb_dev2share(v, SMBM_EXEC, scred, &ssp, &dev);
smp = malloc(sizeof(*smp), M_SMBFSDATA, M_WAITOK | M_ZERO);
if (error) {
printf("invalid device handle %d (%d)\n", v, error);
vfs_mount_error(mp, "invalid device handle %d %d\n", v, error);
smbfs_free_scred(scred);
free(smp, M_SMBFSDATA);
return error;
}
vcp = SSTOVC(ssp);
smb_share_unlock(ssp);
mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
mp->mnt_data = smp;
smp->sm_share = ssp;
smp->sm_root = NULL;
smp->sm_dev = dev;
if (1 != vfs_scanopt(mp->mnt_optnew,
"caseopt", "%d", &smp->sm_caseopt)) {
vfs_mount_error(mp, "Invalid caseopt");
error = EINVAL;
goto bad;
}
if (1 != vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v)) {
vfs_mount_error(mp, "Invalid uid");
error = EINVAL;
goto bad;
}
smp->sm_uid = v;
if (1 != vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v)) {
vfs_mount_error(mp, "Invalid gid");
error = EINVAL;
goto bad;
}
smp->sm_gid = v;
if (1 != vfs_scanopt(mp->mnt_optnew, "file_mode", "%d", &v)) {
vfs_mount_error(mp, "Invalid file_mode");
error = EINVAL;
goto bad;
}
smp->sm_file_mode = (v & (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
if (1 != vfs_scanopt(mp->mnt_optnew, "dir_mode", "%d", &v)) {
vfs_mount_error(mp, "Invalid dir_mode");
error = EINVAL;
goto bad;
}
smp->sm_dir_mode = (v & (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
vfs_flagopt(mp->mnt_optnew,
"nolong", &smp->sm_flags, SMBFS_MOUNT_NO_LONG);
pc = mp->mnt_stat.f_mntfromname;
pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
bzero(pc, MNAMELEN);
*pc++ = '/';
*pc++ = '/';
pc = strchr(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
if (pc < pe-1) {
*(pc++) = '@';
pc = strchr(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
if (pc < pe - 1) {
*(pc++) = '/';
strncpy(pc, ssp->ss_name, pe - pc - 2);
}
}
vfs_getnewfsid(mp);
error = smbfs_root(mp, LK_EXCLUSIVE, &vp);
if (error) {
vfs_mount_error(mp, "smbfs_root error: %d", error);
goto bad;
}
VOP_UNLOCK(vp, 0);
SMBVDEBUG("root.v_usecount = %d\n", vrefcnt(vp));
#ifdef DIAGNOSTIC
SMBERROR("mp=%p\n", mp);
#endif
smbfs_free_scred(scred);
return error;
bad:
if (ssp)
smb_share_put(ssp, scred);
smbfs_free_scred(scred);
SMB_LOCK();
if (error && smp->sm_dev == dev) {
smp->sm_dev = NULL;
sdp_trydestroy(dev);
}
SMB_UNLOCK();
free(smp, M_SMBFSDATA);
return error;
}
/*
* mp - path - addr in user space of mount point (ie /usr or whatever)
* data - addr in user space of mount params
*/
static int nwfs_mount(struct mount *mp)
{
struct nwfs_args args; /* will hold data from mount request */
int error;
struct nwmount *nmp = NULL;
struct ncp_conn *conn = NULL;
struct ncp_handle *handle = NULL;
struct vnode *vp;
struct thread *td;
char *pc,*pe;
td = curthread;
if (mp->mnt_flag & MNT_ROOTFS)
return (EOPNOTSUPP);
if (mp->mnt_flag & MNT_UPDATE) {
nwfs_printf("MNT_UPDATE not implemented");
return (EOPNOTSUPP);
}
error = vfs_copyopt(mp->mnt_optnew, "nwfs_args", &args, sizeof args);
if (error)
return (error);
if (args.version != NWFS_VERSION) {
nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version);
return (1);
}
error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn);
if (error) {
nwfs_printf("invalid connection refernce %d\n",args.connRef);
return (error);
}
error = ncp_conn_gethandle(conn, NULL, &handle);
if (error) {
nwfs_printf("can't get connection handle\n");
return (error);
}
ncp_conn_unlock(conn, td); /* we keep the ref */
mp->mnt_stat.f_iosize = conn->buffer_size;
/* We must malloc our own mount info */
nmp = malloc(sizeof(struct nwmount),M_NWFSDATA,
M_WAITOK | M_USE_RESERVE | M_ZERO);
if (nmp == NULL) {
nwfs_printf("could not alloc nwmount\n");
error = ENOMEM;
goto bad;
}
mp->mnt_data = nmp;
nmp->connh = handle;
nmp->n_root = NULL;
nmp->n_id = nwfsid++;
nmp->m = args;
nmp->m.file_mode = (nmp->m.file_mode &
(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
nmp->m.dir_mode = (nmp->m.dir_mode &
(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
if ((error = nwfs_initnls(nmp)) != 0) goto bad;
pc = mp->mnt_stat.f_mntfromname;
pe = pc+sizeof(mp->mnt_stat.f_mntfromname);
bzero(pc, MNAMELEN);
*(pc++) = '/';
pc = index(strncpy(pc, conn->li.server, pe-pc-2),0);
if (pc < pe-1) {
*(pc++) = ':';
pc=index(strncpy(pc, conn->li.user, pe-pc-2),0);
if (pc < pe-1) {
*(pc++) = '/';
strncpy(pc, nmp->m.mounted_vol, pe-pc-2);
}
}
/* protect against invalid mount points */
nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0';
vfs_getnewfsid(mp);
error = nwfs_root(mp, LK_EXCLUSIVE, &vp);
if (error)
goto bad;
/*
* Lose the lock but keep the ref.
*/
VOP_UNLOCK(vp, 0);
NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp));
return error;
bad:
if (nmp)
free(nmp, M_NWFSDATA);
if (handle)
ncp_conn_puthandle(handle, NULL, 0);
return error;
}
