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core: correctly handle pre-activation dependency failure (rh #1069695)

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Dependencies may fail before the activation actually starts, like
when a software device gets removed while the activation is
scheduled but before it has started.  In these cases, the
activation request should fail.
This commit is contained in:
Dan Williams
2014-02-26 13:18:16 -06:00
parent b7598bbb8c
commit 2fe5ebe21c
2 changed files with 39 additions and 9 deletions
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19
src/nm-activation-request.c
View File

@@ -308,20 +308,29 @@ device_state_changed (NMActiveConnection *active,
NMActiveConnectionState cur_ac_state = nm_active_connection_get_state (active);
NMActiveConnectionState ac_state = NM_ACTIVE_CONNECTION_STATE_UNKNOWN;
/* Ignore state changes when this activation request is not yet active, but
* handle the DISCONNECTED state correctly. The device clears the
* activation request before sending the state change signal so this
* must be special-cased to ensure the activation request is deactivated.
/* Decide which device state changes to handle when this active connection
* is not the device's current request. Two cases here: (a) the AC is
* pending and not yet active, and (b) the AC was active but the device is
* entering DISCONNECTED state (which clears the device's current AC before
* emitting the state change signal).
*/
if (NM_ACTIVE_CONNECTION (nm_device_get_act_request (device)) != active) {
if (new_state != NM_DEVICE_STATE_DISCONNECTED)
/* Some other request is activating; this one must be pending */
if (new_state >= NM_DEVICE_STATE_PREPARE)
return;
else if (new_state == NM_DEVICE_STATE_DISCONNECTED) {
/* This request hasn't started activating yet; the device is
* disconnecting and cleaning up a previous activation request.
*/
if (cur_ac_state < NM_ACTIVE_CONNECTION_STATE_ACTIVATING)
return;
/* Catch device disconnections after this request has been active */
}
/* All states < DISCONNECTED are fatal and handled */
}
/* Set NMActiveConnection state based on the device's state */
switch (new_state) {
case NM_DEVICE_STATE_PREPARE:

23
src/nm-manager.c
View File

@@ -2611,7 +2611,17 @@ _internal_activate_device (NMManager *self, NMActiveConnection *active, GError *
device = nm_active_connection_get_device (active);
if (!device) {
g_assert (connection_needs_virtual_device (connection));
if (!connection_needs_virtual_device (connection)) {
NMSettingConnection *s_con = nm_connection_get_setting_connection (connection);
g_assert (s_con);
g_set_error (error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_UNKNOWN_DEVICE,
"Unsupported virtual interface type '%s'",
nm_setting_connection_get_connection_type (s_con));
return FALSE;
}
device = system_create_virtual_device (self, connection);
if (!device) {
@@ -2721,6 +2731,17 @@ _internal_activate_generic (NMManager *self, NMActiveConnection *active, GError
NMManagerPrivate *priv = NM_MANAGER_GET_PRIVATE (self);
gboolean success = FALSE;
/* Ensure activation request is still valid, eg that its device hasn't gone
* away or that some other dependency has not failed.
*/
if (nm_active_connection_get_state (active) >= NM_ACTIVE_CONNECTION_STATE_DEACTIVATING) {
g_set_error_literal (error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_DEPENDENCY_FAILED,
"Activation failed because dependencies failed.");
return FALSE;
}
if (NM_IS_VPN_CONNECTION (active))
success = _internal_activate_vpn (self, active, error);
else