mirror of
https://github.com/isc-projects/bind9.git
synced 2026-02-24 18:30:38 -05:00
cde7dfea4c
[RT #2394] Basically, "freeze" disables dynamic updates to a zone, syncs the journal file into the master file, and removes the journal. This allows manual edits of a dynamic zone file without stopping the server, since the zone is temporarily considered non-dynamic. "unfreeze" re-enables dynamic updates to a zone. So, instead of the old: rndc stop edit master file remove journal restart server you can now do: rndc freeze zone edit master file rndc reload zone rndc unfreeze zone which doesn't require stopping the server. About everyone here at the secure dynamic update workshop wanted this. It will be documented soon.
133 lines
4.5 KiB
C
133 lines
4.5 KiB
C
/*
|
|
* Copyright (C) 2001 Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
|
|
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
|
|
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
|
|
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
|
|
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
|
|
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/* $Id: control.c,v 1.11 2002/01/22 22:05:46 bwelling Exp $ */
|
|
|
|
#include <config.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <isc/app.h>
|
|
#include <isc/event.h>
|
|
#include <isc/mem.h>
|
|
#include <isc/util.h>
|
|
|
|
#include <isccc/alist.h>
|
|
#include <isccc/cc.h>
|
|
#include <isccc/result.h>
|
|
|
|
#include <named/control.h>
|
|
#include <named/log.h>
|
|
#include <named/os.h>
|
|
#include <named/server.h>
|
|
|
|
static isc_boolean_t
|
|
command_compare(const char *text, const char *command) {
|
|
unsigned int commandlen = strlen(command);
|
|
if (strncasecmp(text, command, commandlen) == 0 &&
|
|
(text[commandlen] == '\0' ||
|
|
text[commandlen] == ' ' ||
|
|
text[commandlen] == '\t'))
|
|
return (ISC_TRUE);
|
|
return (ISC_FALSE);
|
|
}
|
|
|
|
/*
|
|
* This function is called to process the incoming command
|
|
* when a control channel message is received.
|
|
*/
|
|
isc_result_t
|
|
ns_control_docommand(isccc_sexpr_t *message, isc_buffer_t *text) {
|
|
isccc_sexpr_t *data;
|
|
char *command;
|
|
isc_result_t result;
|
|
|
|
data = isccc_alist_lookup(message, "_data");
|
|
if (data == NULL) {
|
|
/*
|
|
* No data section.
|
|
*/
|
|
return (ISC_R_FAILURE);
|
|
}
|
|
|
|
result = isccc_cc_lookupstring(data, "type", &command);
|
|
if (result != ISC_R_SUCCESS) {
|
|
/*
|
|
* We have no idea what this is.
|
|
*/
|
|
return (result);
|
|
}
|
|
|
|
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
|
|
NS_LOGMODULE_CONTROL, ISC_LOG_DEBUG(1),
|
|
"received control channel command '%s'",
|
|
command);
|
|
|
|
/*
|
|
* Compare the 'command' parameter against all known control commands.
|
|
*/
|
|
if (command_compare(command, NS_COMMAND_RELOAD)) {
|
|
result = ns_server_reloadcommand(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_RECONFIG)) {
|
|
result = ns_server_reconfigcommand(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_REFRESH)) {
|
|
result = ns_server_refreshcommand(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_RETRANSFER)) {
|
|
result = ns_server_retransfercommand(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_HALT)) {
|
|
ns_server_flushonshutdown(ns_g_server, ISC_FALSE);
|
|
ns_os_shutdownmsg(command, text);
|
|
isc_app_shutdown();
|
|
result = ISC_R_SUCCESS;
|
|
} else if (command_compare(command, NS_COMMAND_STOP)) {
|
|
ns_server_flushonshutdown(ns_g_server, ISC_TRUE);
|
|
ns_os_shutdownmsg(command, text);
|
|
isc_app_shutdown();
|
|
result = ISC_R_SUCCESS;
|
|
} else if (command_compare(command, NS_COMMAND_DUMPSTATS)) {
|
|
result = ns_server_dumpstats(ns_g_server);
|
|
} else if (command_compare(command, NS_COMMAND_QUERYLOG)) {
|
|
result = ns_server_togglequerylog(ns_g_server);
|
|
} else if (command_compare(command, NS_COMMAND_DUMPDB)) {
|
|
ns_server_dumpdb(ns_g_server);
|
|
result = ISC_R_SUCCESS;
|
|
} else if (command_compare(command, NS_COMMAND_TRACE)) {
|
|
result = ns_server_setdebuglevel(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_NOTRACE)) {
|
|
ns_g_debuglevel = 0;
|
|
isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
|
|
result = ISC_R_SUCCESS;
|
|
} else if (command_compare(command, NS_COMMAND_FLUSH)) {
|
|
result = ns_server_flushcache(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_FLUSHNAME)) {
|
|
result = ns_server_flushname(ns_g_server, command);
|
|
} else if (command_compare(command, NS_COMMAND_STATUS)) {
|
|
result = ns_server_status(ns_g_server, text);
|
|
} else if (command_compare(command, NS_COMMAND_FREEZE)) {
|
|
result = ns_server_freeze(ns_g_server, ISC_TRUE, command);
|
|
} else if (command_compare(command, NS_COMMAND_UNFREEZE)) {
|
|
result = ns_server_freeze(ns_g_server, ISC_FALSE, command);
|
|
} else {
|
|
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
|
|
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
|
|
"unknown control channel command '%s'",
|
|
command);
|
|
result = ISC_R_NOTIMPLEMENTED;
|
|
}
|
|
|
|
return (result);
|
|
}
|