/**
* Unmount VBoxVFS.
*
* @param mp Mount data provided by VFS layer.
* @param fFlags Unmounting flags.
* @param pContext kAuth context needed in order to authentificate mount operation.
*
* @return 0 on success or BSD error code otherwise.
*/
static int
vboxvfs_unmount(struct mount *mp, int fFlags, vfs_context_t pContext)
{
NOREF(pContext);
vboxvfs_mount_t *pMount;
int rc = EBUSY;
int fFlush = (fFlags & MNT_FORCE) ? FORCECLOSE : 0;
PDEBUG("Attempting to %s unmount a shared folder", (fFlags & MNT_FORCE) ? "forcibly" : "normally");
AssertReturn(mp, EINVAL);
pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp);
AssertReturn(pMount, EINVAL);
AssertReturn(pMount->pRootVnode, EINVAL);
/* Check if we can do unmount at the moment */
if (!vnode_isinuse(pMount->pRootVnode, 1))
{
/* Flush child vnodes first */
rc = vflush(mp, pMount->pRootVnode, fFlush);
if (rc == 0)
{
/* Flush root vnode */
rc = vflush(mp, NULL, fFlush);
if (rc == 0)
{
vfs_setfsprivate(mp, NULL);
rc = VbglR0SfUnmapFolder(&g_vboxSFClient, &pMount->pMap);
if (RT_SUCCESS(rc))
{
vboxvfs_destroy_internal_data(&pMount);
PDEBUG("A shared folder has been successfully unmounted");
return 0;
}
PDEBUG("Unable to unmount shared folder");
rc = EPROTO;
}
else
PDEBUG("Unable to flush filesystem before unmount, some data might be lost");
}
else
PDEBUG("Unable to flush child vnodes");
}
else
PDEBUG("Root vnode is in use, can't unmount");
vnode_put(pMount->pRootVnode);
return rc;
}
/* unmap the share and free global info [sf_g] */
static void
sf_glob_free(struct sf_glob_info *sf_g)
{
int rc;
TRACE();
rc = VbglR0SfUnmapFolder(&client_handle, &sf_g->map);
if (RT_FAILURE(rc))
LogFunc(("VbglR0SfUnmapFolder failed rc=%d\n", rc));
if (sf_g->nls)
unload_nls(sf_g->nls);
kfree(sf_g);
}
NTSTATUS VBoxMRxFinalizeNetRoot(IN PMRX_NET_ROOT pNetRoot, IN PBOOLEAN ForceDisconnect)
{
PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(pNetRoot);
RT_NOREF(pNetRoot, ForceDisconnect);
Log(("VBOXSF: MRxFinalizeNetRoot: NET_ROOT %p\n", pNetRoot));
if (pNetRootExtension->phgcmClient)
{
int vboxRC = VbglR0SfUnmapFolder(pNetRootExtension->phgcmClient, &pNetRootExtension->map);
if (vboxRC != VINF_SUCCESS)
Log(("VBOXSF: MRxFinalizeVNetRoot: VbglR0SfUnmapFolder failed with %d\n",
vboxRC));
pNetRootExtension->phgcmClient = NULL;
}
return STATUS_SUCCESS;
}
static int vboxvfs_unmount(struct mount *mp, int mntflags, struct thread *td)
{
struct sf_glob_info *pShFlGlobalInfo = VFSMP2SFGLOBINFO(mp);
int rc;
int flags = 0;
rc = VbglR0SfUnmapFolder(&g_vboxSFClient, &pShFlGlobalInfo->map);
if (RT_FAILURE(rc))
printf("Failed to unmap shared folder\n");
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
/* There is 1 extra root vnode reference (vnode_root). */
rc = vflush(mp, 1, flags, td);
if (rc)
return rc;
RTMemFree(pShFlGlobalInfo);
mp->mnt_data = NULL;
return 0;
}
