4 Copyright (C) Ronnie Sahlberg 2009
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #include "lib/events/events.h"
21 #include "lib/tdb/include/tdb.h"
22 #include "system/time.h"
23 #include "system/network.h"
24 #include "system/filesys.h"
25 #include "system/wait.h"
26 #include "../include/ctdb.h"
27 #include "../include/ctdb_private.h"
31 ctdb_ban_node_event(struct event_context *ev, struct timed_event *te,
32 struct timeval t, void *private_data)
34 struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
36 DEBUG(DEBUG_ERR,("Banning timedout\n"));
37 ctdb->nodes[ctdb->pnn]->flags &= ~NODE_FLAGS_BANNED;
39 if (ctdb->banning_ctx != NULL) {
40 talloc_free(ctdb->banning_ctx);
41 ctdb->banning_ctx = NULL;
45 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata)
47 struct ctdb_ban_time *bantime = (struct ctdb_ban_time *)indata.dptr;
49 DEBUG(DEBUG_INFO,("SET BAN STATE\n"));
51 if (bantime->pnn != ctdb->pnn) {
52 if (bantime->pnn < 0 || bantime->pnn >= ctdb->num_nodes) {
53 DEBUG(DEBUG_ERR,(__location__ " ERROR: Invalid ban request. PNN:%d is invalid. Max nodes %d\n", bantime->pnn, ctdb->num_nodes));
56 if (bantime->time == 0) {
57 DEBUG(DEBUG_INFO,("unbanning node %d\n", bantime->pnn));
58 ctdb->nodes[bantime->pnn]->flags &= ~NODE_FLAGS_BANNED;
60 DEBUG(DEBUG_INFO,("banning node %d\n", bantime->pnn));
61 if (ctdb->tunable.enable_bans == 0) {
62 DEBUG(DEBUG_INFO,("Bans are disabled - ignoring ban of node %u\n", bantime->pnn));
66 ctdb->nodes[bantime->pnn]->flags |= NODE_FLAGS_BANNED;
71 if (ctdb->banning_ctx != NULL) {
72 talloc_free(ctdb->banning_ctx);
73 ctdb->banning_ctx = NULL;
76 if (bantime->time == 0) {
77 DEBUG(DEBUG_ERR,("Unbanning this node\n"));
78 ctdb->nodes[bantime->pnn]->flags &= ~NODE_FLAGS_BANNED;
82 if (ctdb->tunable.enable_bans == 0) {
83 DEBUG(DEBUG_ERR,("Bans are disabled - ignoring ban of node %u\n", bantime->pnn));
87 ctdb->banning_ctx = talloc(ctdb, struct ctdb_ban_time);
88 if (ctdb->banning_ctx == NULL) {
89 DEBUG(DEBUG_CRIT,(__location__ " ERROR Failed to allocate new banning state\n"));
92 *((struct ctdb_ban_time *)(ctdb->banning_ctx)) = *bantime;
95 DEBUG(DEBUG_ERR,("Banning this node for %d seconds\n", bantime->time));
96 ctdb->nodes[bantime->pnn]->flags |= NODE_FLAGS_BANNED;
98 event_add_timed(ctdb->ev, ctdb->banning_ctx, timeval_current_ofs(bantime->time,0), ctdb_ban_node_event, ctdb);
103 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata)
105 struct ctdb_ban_time *bantime;
107 bantime = talloc(outdata, struct ctdb_ban_time);
108 CTDB_NO_MEMORY(ctdb, bantime);
110 if (ctdb->banning_ctx != NULL) {
111 *bantime = *(struct ctdb_ban_time *)(ctdb->banning_ctx);
113 bantime->pnn = ctdb->pnn;
117 outdata->dptr = (uint8_t *)bantime;
118 outdata->dsize = sizeof(struct ctdb_ban_time);
123 /* Routine to ban ourselves for a while when trouble strikes. */
124 void ctdb_ban_self(struct ctdb_context *ctdb)
127 struct ctdb_ban_time bantime;
129 bantime.pnn = ctdb->pnn;
130 bantime.time = ctdb->tunable.recovery_ban_period;
132 data.dsize = sizeof(bantime);
133 data.dptr = (uint8_t *)&bantime;
135 ctdb_control_set_ban_state(ctdb, data);