#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "rpc_server/rpc_pipes.h"
+#include "lib/util/tevent_ntstatus.h"
/****************************************************************************
Update last used timestamps.
conn_lastused_update(sconn, t);
if (deadtime <= 0) {
- deadtime = DEFAULT_SMBD_TIMEOUT;
+ return false;
}
for (conn=sconn->connections;conn;conn=conn->next) {
time_t age = t - conn->lastused;
- /* close dirptrs on connections that are idle */
- if (age > DPTR_IDLE_TIMEOUT) {
- dptr_idlecnum(conn);
- }
-
if (conn->num_files_open > 0 || age < deadtime) {
return false;
}
}
- /*
- * Check all pipes for any open handles. We cannot
- * idle with a handle open.
- */
- if (check_open_pipes()) {
- return false;
- }
-
return true;
}
/****************************************************************************
- Close all conn structures.
- Return true if any were closed.
-****************************************************************************/
-
-void conn_close_all(struct smbd_server_connection *sconn)
-{
- if (sconn->using_smb2) {
- smbXsrv_session_logoff_all(sconn->conn);
- } else {
- smb1srv_tcon_disconnect_all(sconn->conn);
- }
-}
-
-
-/****************************************************************************
- Forcibly unmount a share.
+ Forcibly unmount a share - async
All instances of the parameter 'sharename' share are unmounted.
The special sharename '*' forces unmount of all shares.
****************************************************************************/
-void conn_force_tdis(struct smbd_server_connection *sconn, const char *sharename)
-{
- connection_struct *conn, *next;
- bool close_all = false;
+static struct tevent_req *conn_force_tdis_send(connection_struct *conn);
+static void conn_force_tdis_done(struct tevent_req *req);
- if (strcmp(sharename, "*") == 0) {
- close_all = true;
- DEBUG(1, ("conn_force_tdis: Forcing close of all shares\n"));
- }
+void conn_force_tdis(
+ struct smbd_server_connection *sconn,
+ bool (*check_fn)(struct connection_struct *conn,
+ void *private_data),
+ void *private_data)
+{
+ connection_struct *conn;
/* SMB1 and SMB 2*/
- for (conn = sconn->connections; conn; conn = next) {
+ for (conn = sconn->connections; conn; conn = conn->next) {
struct smbXsrv_tcon *tcon;
bool do_close = false;
- NTSTATUS status;
- uint64_t vuid = UID_FIELD_INVALID;
-
- next = conn->next;
-
- if (close_all) {
- do_close = true;
- } else if (strequal(lp_servicename(SNUM(conn)), sharename)) {
- DEBUG(1, ("conn_force_tdis: Forcing close of "
- "share '%s' (wire_id=0x%08x)\n",
- tcon->global->share_name,
- tcon->global->tcon_wire_id));
- do_close = true;
+ struct tevent_req *req;
+
+ if (conn->tcon == NULL) {
+ continue;
}
+ tcon = conn->tcon;
+ if (!NT_STATUS_IS_OK(tcon->status)) {
+ /* In the process of already being disconnected. */
+ continue;
+ }
+
+ do_close = check_fn(conn, private_data);
if (!do_close) {
continue;
}
- if (sconn->using_smb2) {
- vuid = conn->vuid;
+ req = conn_force_tdis_send(conn);
+ if (req == NULL) {
+ DBG_WARNING("talloc_fail forcing async close of "
+ "share '%s'\n",
+ tcon->global->share_name);
+ continue;
}
- conn = NULL;
- status = smbXsrv_tcon_disconnect(tcon, vuid);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("conn_force_tdis: "
- "smbXsrv_tcon_disconnect() of share '%s' "
- "(wire_id=0x%08x) failed: %s\n",
- tcon->global->share_name,
- tcon->global->tcon_wire_id,
- nt_errstr(status)));
+ DBG_WARNING("Forcing close of "
+ "share '%s' (wire_id=0x%08x)\n",
+ tcon->global->share_name,
+ tcon->global->tcon_wire_id);
+
+ tevent_req_set_callback(req, conn_force_tdis_done, conn);
+ }
+}
+
+struct conn_force_tdis_state {
+ struct tevent_queue *wait_queue;
+};
+
+static void conn_force_tdis_wait_done(struct tevent_req *subreq);
+
+static struct tevent_req *conn_force_tdis_send(connection_struct *conn)
+{
+ struct tevent_req *req;
+ struct conn_force_tdis_state *state;
+ struct tevent_req *subreq;
+ files_struct *fsp;
+
+ /* Create this off the NULL context. We must clean up on return. */
+ req = tevent_req_create(NULL, &state,
+ struct conn_force_tdis_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->wait_queue = tevent_queue_create(state,
+ "conn_force_tdis_wait_queue");
+ if (tevent_req_nomem(state->wait_queue, req)) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
+
+ /*
+ * Make sure that no new request will be able to use this tcon.
+ * This ensures that once all outstanding fsp->aio_requests
+ * on this tcon are done, we are safe to close it.
+ */
+ conn->tcon->status = NT_STATUS_NETWORK_NAME_DELETED;
+
+ for (fsp = conn->sconn->files; fsp; fsp = fsp->next) {
+ if (fsp->conn != conn) {
+ continue;
}
+ /*
+ * Flag the file as close in progress.
+ * This will prevent any more IO being
+ * done on it. Not strictly needed, but
+ * doesn't hurt to flag it as closing.
+ */
+ fsp->fsp_flags.closing = true;
- TALLOC_FREE(tcon);
+ if (fsp->num_aio_requests > 0) {
+ /*
+ * Now wait until all aio requests on this fsp are
+ * finished.
+ *
+ * We don't set a callback, as we just want to block the
+ * wait queue and the talloc_free() of fsp->aio_request
+ * will remove the item from the wait queue.
+ */
+ subreq = tevent_queue_wait_send(fsp->aio_requests,
+ conn->sconn->ev_ctx,
+ state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
+ }
}
+ /*
+ * Now we add our own waiter to the end of the queue,
+ * this way we get notified when all pending requests are finished
+ * and reply to the outstanding SMB1 request.
+ */
+ subreq = tevent_queue_wait_send(state,
+ conn->sconn->ev_ctx,
+ state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
+
+ tevent_req_set_callback(subreq, conn_force_tdis_wait_done, req);
+ return req;
+}
+
+static void conn_force_tdis_wait_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+
+ tevent_queue_wait_recv(subreq);
+ TALLOC_FREE(subreq);
+ tevent_req_done(req);
+}
+
+static NTSTATUS conn_force_tdis_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+static void conn_force_tdis_done(struct tevent_req *req)
+{
+ connection_struct *conn = tevent_req_callback_data(
+ req, connection_struct);
+ NTSTATUS status;
+ uint64_t vuid = UID_FIELD_INVALID;
+ struct smbXsrv_tcon *tcon = conn->tcon;
+ struct smbd_server_connection *sconn = conn->sconn;
+
+ status = conn_force_tdis_recv(req);
+ TALLOC_FREE(req);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_ERR("conn_force_tdis_recv of share '%s' "
+ "(wire_id=0x%08x) failed: %s\n",
+ tcon->global->share_name,
+ tcon->global->tcon_wire_id,
+ nt_errstr(status));
+ return;
+ }
+
+ if (conn_using_smb2(conn->sconn)) {
+ vuid = conn->vuid;
+ }
+
+ DBG_WARNING("Closing "
+ "share '%s' (wire_id=0x%08x)\n",
+ tcon->global->share_name,
+ tcon->global->tcon_wire_id);
+
+ conn = NULL;
+ status = smbXsrv_tcon_disconnect(tcon, vuid);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_ERR("smbXsrv_tcon_disconnect() of share '%s' "
+ "(wire_id=0x%08x) failed: %s\n",
+ tcon->global->share_name,
+ tcon->global->tcon_wire_id,
+ nt_errstr(status));
+ return;
+ }
+
+ TALLOC_FREE(tcon);
+
+ /*
+ * As we've been awoken, we may have changed
+ * uid in the meantime. Ensure we're still root.
+ */
+ change_to_root_user();
+ /*
+ * Use 'false' in the last parameter (test) to force
+ * a full reload of services. Prevents
+ * reload_services caching the fact it's
+ * been called multiple times in a row.
+ * See BUG: https://bugzilla.samba.org/show_bug.cgi?id=14604
+ * for details.
+ */
+ reload_services(sconn, conn_snum_used, false);
}
git.samba.org / samba.git / blobdiff