4 Copyright (C) Andrew Tridgell 2007
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/>.
22 #include "system/filesys.h"
23 #include "system/wait.h"
24 #include "system/dir.h"
25 #include "system/locale.h"
26 #include "../include/ctdb_private.h"
27 #include "../common/rb_tree.h"
28 #include "lib/util/dlinklist.h"
30 static void ctdb_event_script_timeout(struct event_context *ev, struct timed_event *te, struct timeval t, void *p);
33 ctdbd sends us a SIGTERM when we should die.
35 static void sigterm(int sig)
39 /* all the child processes will be running in the same process group */
42 kill(-getpid(), SIGKILL);
49 /* This is attached to the event script state. */
50 struct event_script_callback {
51 struct event_script_callback *next, *prev;
52 struct ctdb_context *ctdb;
54 /* Warning: this can free us! */
55 void (*fn)(struct ctdb_context *, int, void *);
60 struct ctdb_event_script_state {
61 struct ctdb_context *ctdb;
62 struct event_script_callback *callback;
66 enum ctdb_eventscript_call call;
68 struct timeval timeout;
71 struct ctdb_scripts_wire *scripts;
74 static struct ctdb_script_wire *get_current_script(struct ctdb_event_script_state *state)
76 return &state->scripts->scripts[state->current];
79 /* called from ctdb_logging when we have received output on STDERR from
80 * one of the eventscripts
82 static void log_event_script_output(const char *str, uint16_t len, void *p)
84 struct ctdb_event_script_state *state
85 = talloc_get_type(p, struct ctdb_event_script_state);
86 struct ctdb_script_wire *current;
87 unsigned int slen, min;
89 /* We may have been aborted to run something else. Discard */
90 if (state->scripts == NULL) {
94 current = get_current_script(state);
96 /* Append, but don't overfill buffer. It starts zero-filled. */
97 slen = strlen(current->output);
98 min = MIN(len, sizeof(current->output) - slen - 1);
100 memcpy(current->output + slen, str, min);
103 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
107 if (call_type >= CTDB_EVENT_MAX) {
111 if (ctdb->last_status[call_type] == NULL) {
112 /* If it's never been run, return nothing so they can tell. */
115 outdata->dsize = talloc_get_size(ctdb->last_status[call_type]);
116 outdata->dptr = (uint8_t *)ctdb->last_status[call_type];
121 struct ctdb_script_tree_item {
126 /* Return true if OK, otherwise set errno. */
127 static bool check_executable(const char *dir, const char *name)
132 full = talloc_asprintf(NULL, "%s/%s", dir, name);
136 if (stat(full, &st) != 0) {
137 DEBUG(DEBUG_ERR,("Could not stat event script %s: %s\n",
138 full, strerror(errno)));
143 if (!(st.st_mode & S_IXUSR)) {
144 DEBUG(DEBUG_DEBUG,("Event script %s is not executable. Ignoring this event script\n", full));
154 static struct ctdb_scripts_wire *ctdb_get_script_list(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx)
160 struct ctdb_scripts_wire *scripts;
161 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
162 struct ctdb_script_tree_item *tree_item;
166 the service specific event scripts
168 if (stat(ctdb->event_script_dir, &st) != 0 &&
170 DEBUG(DEBUG_CRIT,("No event script directory found at '%s'\n", ctdb->event_script_dir));
171 talloc_free(tmp_ctx);
175 /* create a tree to store all the script names in */
176 tree = trbt_create(tmp_ctx, 0);
178 /* scan all directory entries and insert all valid scripts into the
181 dir = opendir(ctdb->event_script_dir);
183 DEBUG(DEBUG_CRIT,("Failed to open event script directory '%s'\n", ctdb->event_script_dir));
184 talloc_free(tmp_ctx);
189 while ((de=readdir(dir)) != NULL) {
193 namlen = strlen(de->d_name);
199 if (de->d_name[namlen-1] == '~') {
200 /* skip files emacs left behind */
204 if (de->d_name[2] != '.') {
208 if (sscanf(de->d_name, "%02u.", &num) != 1) {
212 if (strlen(de->d_name) > MAX_SCRIPT_NAME) {
213 DEBUG(DEBUG_ERR,("Script name %s too long! %u chars max",
214 de->d_name, MAX_SCRIPT_NAME));
218 tree_item = talloc(tree, struct ctdb_script_tree_item);
219 if (tree_item == NULL) {
220 DEBUG(DEBUG_ERR, (__location__ " Failed to allocate new tree item\n"));
221 talloc_free(tmp_ctx);
225 tree_item->error = 0;
226 if (!check_executable(ctdb->event_script_dir, de->d_name)) {
227 tree_item->error = errno;
230 tree_item->name = talloc_strdup(tree_item, de->d_name);
231 if (tree_item->name == NULL) {
232 DEBUG(DEBUG_ERR,(__location__ " Failed to allocate script name.\n"));
233 talloc_free(tmp_ctx);
237 /* store the event script in the tree */
238 trbt_insert32(tree, (num<<16)|count++, tree_item);
242 /* Overallocates by one, but that's OK */
243 scripts = talloc_zero_size(tmp_ctx,
245 + sizeof(scripts->scripts[0]) * count);
246 if (scripts == NULL) {
247 DEBUG(DEBUG_ERR, (__location__ " Failed to allocate scripts\n"));
248 talloc_free(tmp_ctx);
251 scripts->num_scripts = count;
253 for (count = 0; count < scripts->num_scripts; count++) {
254 tree_item = trbt_findfirstarray32(tree, 1);
256 strcpy(scripts->scripts[count].name, tree_item->name);
257 scripts->scripts[count].status = -tree_item->error;
259 /* remove this script from the tree */
260 talloc_free(tree_item);
263 talloc_steal(mem_ctx, scripts);
264 talloc_free(tmp_ctx);
268 static int child_setup(struct ctdb_context *ctdb)
270 if (setpgid(0,0) != 0) {
272 DEBUG(DEBUG_ERR,("Failed to create process group for event scripts - %s\n",
277 signal(SIGTERM, sigterm);
281 static char *child_command_string(struct ctdb_context *ctdb,
284 const char *scriptname,
285 enum ctdb_eventscript_call call,
288 const char *str = from_user ? "CTDB_CALLED_BY_USER=1 " : "";
290 /* Allow a setting where we run the actual monitor event
291 from an external source and replace it with
292 a "status" event that just picks up the actual
293 status of the event asynchronously.
295 if ((ctdb->tunable.use_status_events_for_monitoring != 0)
296 && (call == CTDB_EVENT_MONITOR)
298 return talloc_asprintf(ctx, "%s%s/%s %s",
300 ctdb->event_script_dir,
301 scriptname, "status");
303 return talloc_asprintf(ctx, "%s%s/%s %s %s",
305 ctdb->event_script_dir,
307 ctdb_eventscript_call_names[call],
312 static int child_run_one(struct ctdb_context *ctdb,
313 const char *scriptname, const char *cmdstr)
317 ret = system(cmdstr);
318 /* if the system() call was successful, translate ret into the
319 return code from the command
322 ret = WEXITSTATUS(ret);
327 /* 127 could mean it does not exist, 126 non-executable. */
328 if (ret == 127 || ret == 126) {
330 if (!check_executable(ctdb->event_script_dir, scriptname)) {
331 DEBUG(DEBUG_ERR,("Script %s returned status %u. Someone just deleted it?\n",
340 Actually run one event script
341 this function is called and run in the context of a forked child
342 which allows it to do blocking calls such as system()
344 static int child_run_script(struct ctdb_context *ctdb,
346 enum ctdb_eventscript_call call,
348 struct ctdb_script_wire *current)
352 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
354 ret = child_setup(ctdb);
358 cmdstr = child_command_string(ctdb, tmp_ctx, from_user,
359 current->name, call, options);
360 CTDB_NO_MEMORY(ctdb, cmdstr);
362 DEBUG(DEBUG_DEBUG,("Executing event script %s\n",cmdstr));
364 if (current->status) {
365 ret = current->status;
369 ret = child_run_one(ctdb, current->name, cmdstr);
371 talloc_free(tmp_ctx);
375 static void ctdb_event_script_handler(struct event_context *ev, struct fd_event *fde,
376 uint16_t flags, void *p);
378 static int fork_child_for_script(struct ctdb_context *ctdb,
379 struct ctdb_event_script_state *state)
382 struct tevent_fd *fde;
383 struct ctdb_script_wire *current = get_current_script(state);
385 current->start = timeval_current();
389 DEBUG(DEBUG_ERR, (__location__ " pipe failed for child eventscript process\n"));
393 if (!ctdb_fork_with_logging(state, ctdb, current->name, log_event_script_output,
394 state, &state->child)) {
401 /* If we are the child, do the work. */
402 if (state->child == 0) {
405 debug_extra = talloc_asprintf(NULL, "eventscript-%s-%s:",
407 ctdb_eventscript_call_names[state->call]);
409 set_close_on_exec(state->fd[1]);
410 ctdb_set_process_name("ctdb_eventscript");
412 rt = child_run_script(ctdb, state->from_user, state->call, state->options, current);
413 /* We must be able to write PIPEBUF bytes at least; if this
414 somehow fails, the read above will be short. */
415 write(state->fd[1], &rt, sizeof(rt));
421 set_close_on_exec(state->fd[0]);
423 DEBUG(DEBUG_DEBUG, (__location__ " Created PIPE FD:%d to child eventscript process\n", state->fd[0]));
425 /* Set ourselves up to be called when that's done. */
426 fde = event_add_fd(ctdb->ev, state, state->fd[0], EVENT_FD_READ,
427 ctdb_event_script_handler, state);
428 tevent_fd_set_auto_close(fde);
434 Summarize status of this run of scripts.
436 static int script_status(struct ctdb_scripts_wire *scripts)
440 for (i = 0; i < scripts->num_scripts; i++) {
441 switch (scripts->scripts[i].status) {
444 /* Disabled or missing; that's OK. */
450 return scripts->scripts[i].status;
458 /* called when child is finished */
459 static void ctdb_event_script_handler(struct event_context *ev, struct fd_event *fde,
460 uint16_t flags, void *p)
462 struct ctdb_event_script_state *state =
463 talloc_get_type(p, struct ctdb_event_script_state);
464 struct ctdb_script_wire *current = get_current_script(state);
465 struct ctdb_context *ctdb = state->ctdb;
469 DEBUG(DEBUG_ERR,("Eventscript finished but ctdb is NULL\n"));
473 r = read(state->fd[0], ¤t->status, sizeof(current->status));
475 current->status = -errno;
476 } else if (r != sizeof(current->status)) {
477 current->status = -EIO;
480 current->finished = timeval_current();
481 /* valgrind gets overloaded if we run next script as it's still doing
482 * post-execution analysis, so kill finished child here. */
483 if (ctdb->valgrinding) {
484 ctdb_kill(ctdb, state->child, SIGKILL);
489 status = script_status(state->scripts);
491 /* Aborted or finished all scripts? We're done. */
492 if (status != 0 || state->current+1 == state->scripts->num_scripts) {
493 DEBUG(DEBUG_INFO,(__location__ " Eventscript %s %s finished with state %d\n",
494 ctdb_eventscript_call_names[state->call], state->options, status));
496 ctdb->event_script_timeouts = 0;
501 /* Forget about that old fd. */
507 current->status = fork_child_for_script(ctdb, state);
508 if (current->status != 0) {
509 /* This calls the callback. */
514 static void ctdb_run_debug_hung_script(struct ctdb_context *ctdb, struct ctdb_event_script_state *state)
516 struct ctdb_script_wire *current = get_current_script(state);
519 const char * debug_hung_script = ETCDIR "/ctdb/debug-hung-script.sh";
521 cmd = child_command_string(ctdb, state,
522 state->from_user, current->name,
523 state->call, state->options);
524 CTDB_NO_MEMORY_VOID(state->ctdb, cmd);
526 DEBUG(DEBUG_ERR,("Timed out running script '%s' after %.1f seconds pid :%d\n",
527 cmd, timeval_elapsed(¤t->start), state->child));
530 if (!ctdb_fork_with_logging(ctdb, ctdb, "Hung script", NULL, NULL, &pid)) {
531 DEBUG(DEBUG_ERR,("Failed to fork a child process with logging to track hung event script\n"));
532 ctdb_kill(state->ctdb, state->child, SIGTERM);
536 DEBUG(DEBUG_ERR,("Fork for debug script failed : %s\n",
538 ctdb_kill(state->ctdb, state->child, SIGTERM);
544 ctdb_set_process_name("ctdb_debug_hung_script");
545 if (getenv("CTDB_DEBUG_HUNG_SCRIPT") != NULL) {
546 debug_hung_script = getenv("CTDB_DEBUG_HUNG_SCRIPT");
549 buf = talloc_asprintf(NULL, "%s %d",
550 debug_hung_script, state->child);
554 /* Now we can kill the child */
555 ctdb_kill(state->ctdb, state->child, SIGTERM);
559 /* Don't kill child until timeout done. */
563 /* called when child times out */
564 static void ctdb_event_script_timeout(struct event_context *ev, struct timed_event *te,
565 struct timeval t, void *p)
567 struct ctdb_event_script_state *state = talloc_get_type(p, struct ctdb_event_script_state);
568 struct ctdb_context *ctdb = state->ctdb;
569 struct ctdb_script_wire *current = get_current_script(state);
571 DEBUG(DEBUG_ERR,("Event script timed out : %s %s %s count : %u pid : %d\n",
572 current->name, ctdb_eventscript_call_names[state->call], state->options, ctdb->event_script_timeouts, state->child));
574 /* ignore timeouts for these events */
575 switch (state->call) {
576 case CTDB_EVENT_START_RECOVERY:
577 case CTDB_EVENT_RECOVERED:
578 case CTDB_EVENT_TAKE_IP:
579 case CTDB_EVENT_RELEASE_IP:
580 case CTDB_EVENT_STATUS:
581 state->scripts->scripts[state->current].status = 0;
582 DEBUG(DEBUG_ERR,("Ignoring hung script for %s call %d\n", state->options, state->call));
583 ctdb_run_debug_hung_script(ctdb, state);
586 state->scripts->scripts[state->current].status = -ETIME;
587 ctdb_run_debug_hung_script(ctdb, state);
594 destroy an event script: kill it if ->child != 0.
596 static int event_script_destructor(struct ctdb_event_script_state *state)
599 struct event_script_callback *callback;
602 DEBUG(DEBUG_ERR,(__location__ " Sending SIGTERM to child pid:%d\n", state->child));
604 if (ctdb_kill(state->ctdb, state->child, SIGTERM) != 0) {
605 DEBUG(DEBUG_ERR,("Failed to kill child process for eventscript, errno %s(%d)\n", strerror(errno), errno));
609 /* If we were the current monitor, we no longer are. */
610 if (state->ctdb->current_monitor == state) {
611 state->ctdb->current_monitor = NULL;
614 /* Save our scripts as the last executed status, if we have them.
615 * See ctdb_event_script_callback_v where we abort monitor event. */
616 if (state->scripts) {
617 talloc_free(state->ctdb->last_status[state->call]);
618 state->ctdb->last_status[state->call] = state->scripts;
619 if (state->current < state->ctdb->last_status[state->call]->num_scripts) {
620 state->ctdb->last_status[state->call]->num_scripts = state->current+1;
624 /* Use last status as result, or "OK" if none. */
625 if (state->ctdb->last_status[state->call]) {
626 status = script_status(state->ctdb->last_status[state->call]);
631 /* This is allowed to free us; talloc will prevent double free anyway,
632 * but beware if you call this outside the destructor!
633 * the callback hangs off a different context so we walk the list
634 * of "active" callbacks until we find the one state points to.
635 * if we cant find it it means the callback has been removed.
637 for (callback = state->ctdb->script_callbacks; callback != NULL; callback = callback->next) {
638 if (callback == state->callback) {
643 state->callback = NULL;
646 /* Make sure destructor doesn't free itself! */
647 talloc_steal(NULL, callback);
648 callback->fn(state->ctdb, status, callback->private_data);
649 talloc_free(callback);
655 static unsigned int count_words(const char *options)
657 unsigned int words = 0;
659 options += strspn(options, " \t");
662 options += strcspn(options, " \t");
663 options += strspn(options, " \t");
668 static bool check_options(enum ctdb_eventscript_call call, const char *options)
671 /* These all take no arguments. */
672 case CTDB_EVENT_INIT:
673 case CTDB_EVENT_SETUP:
674 case CTDB_EVENT_STARTUP:
675 case CTDB_EVENT_START_RECOVERY:
676 case CTDB_EVENT_RECOVERED:
677 case CTDB_EVENT_MONITOR:
678 case CTDB_EVENT_STATUS:
679 case CTDB_EVENT_SHUTDOWN:
680 case CTDB_EVENT_RELOAD:
681 case CTDB_EVENT_IPREALLOCATED:
682 return count_words(options) == 0;
684 case CTDB_EVENT_TAKE_IP: /* interface, IP address, netmask bits. */
685 case CTDB_EVENT_RELEASE_IP:
686 return count_words(options) == 3;
688 case CTDB_EVENT_UPDATE_IP: /* old interface, new interface, IP address, netmask bits. */
689 return count_words(options) == 4;
692 DEBUG(DEBUG_ERR,(__location__ "Unknown ctdb_eventscript_call %u\n", call));
697 static int remove_callback(struct event_script_callback *callback)
699 DLIST_REMOVE(callback->ctdb->script_callbacks, callback);
704 run the event script in the background, calling the callback when
707 static int ctdb_event_script_callback_v(struct ctdb_context *ctdb,
709 void (*callback)(struct ctdb_context *, int, void *),
712 enum ctdb_eventscript_call call,
713 const char *fmt, va_list ap)
715 struct ctdb_event_script_state *state;
717 if (ctdb->recovery_mode != CTDB_RECOVERY_NORMAL) {
718 /* we guarantee that only some specifically allowed event scripts are run
720 const enum ctdb_eventscript_call allowed_calls[] = {
723 CTDB_EVENT_START_RECOVERY,
725 CTDB_EVENT_RELEASE_IP,
726 CTDB_EVENT_IPREALLOCATED,
729 for (i=0;i<ARRAY_SIZE(allowed_calls);i++) {
730 if (call == allowed_calls[i]) break;
732 if (i == ARRAY_SIZE(allowed_calls)) {
733 DEBUG(DEBUG_ERR,("Refusing to run event scripts call '%s' while in recovery\n",
734 ctdb_eventscript_call_names[call]));
739 /* Kill off any running monitor events to run this event. */
740 if (ctdb->current_monitor) {
741 struct ctdb_event_script_state *ms = talloc_get_type(ctdb->current_monitor, struct ctdb_event_script_state);
743 /* Cancel current monitor callback state only if monitoring
744 * context ctdb->monitor->monitor_context has not been freed */
745 if (ms->callback != NULL && !ctdb_stopped_monitoring(ctdb)) {
746 ms->callback->fn(ctdb, -ECANCELED, ms->callback->private_data);
747 talloc_free(ms->callback);
750 /* Discard script status so we don't save to last_status */
751 talloc_free(ctdb->current_monitor->scripts);
752 ctdb->current_monitor->scripts = NULL;
753 talloc_free(ctdb->current_monitor);
754 ctdb->current_monitor = NULL;
757 state = talloc(ctdb->event_script_ctx, struct ctdb_event_script_state);
758 CTDB_NO_MEMORY(ctdb, state);
760 /* The callback isn't done if the context is freed. */
761 state->callback = talloc(mem_ctx, struct event_script_callback);
762 CTDB_NO_MEMORY(ctdb, state->callback);
763 DLIST_ADD(ctdb->script_callbacks, state->callback);
764 talloc_set_destructor(state->callback, remove_callback);
765 state->callback->ctdb = ctdb;
766 state->callback->fn = callback;
767 state->callback->private_data = private_data;
770 state->from_user = from_user;
772 state->options = talloc_vasprintf(state, fmt, ap);
773 state->timeout = timeval_set(ctdb->tunable.script_timeout, 0);
774 state->scripts = NULL;
775 if (state->options == NULL) {
776 DEBUG(DEBUG_ERR, (__location__ " could not allocate state->options\n"));
780 if (!check_options(state->call, state->options)) {
781 DEBUG(DEBUG_ERR, ("Bad eventscript options '%s' for %s\n",
782 ctdb_eventscript_call_names[state->call], state->options));
787 DEBUG(DEBUG_INFO,(__location__ " Starting eventscript %s %s\n",
788 ctdb_eventscript_call_names[state->call],
791 /* This is not a child of state, since we save it in destructor. */
792 state->scripts = ctdb_get_script_list(ctdb, ctdb);
793 if (state->scripts == NULL) {
800 if (!from_user && (call == CTDB_EVENT_MONITOR || call == CTDB_EVENT_STATUS)) {
801 ctdb->current_monitor = state;
804 talloc_set_destructor(state, event_script_destructor);
807 if (state->scripts->num_scripts == 0) {
812 state->scripts->scripts[0].status = fork_child_for_script(ctdb, state);
813 if (state->scripts->scripts[0].status != 0) {
814 /* Callback is called from destructor, with fail result. */
819 if (!timeval_is_zero(&state->timeout)) {
820 event_add_timed(ctdb->ev, state, timeval_current_ofs(state->timeout.tv_sec, state->timeout.tv_usec), ctdb_event_script_timeout, state);
822 DEBUG(DEBUG_ERR, (__location__ " eventscript %s %s called with no timeout\n",
823 ctdb_eventscript_call_names[state->call],
832 run the event script in the background, calling the callback when
833 finished. If mem_ctx is freed, callback will never be called.
835 int ctdb_event_script_callback(struct ctdb_context *ctdb,
837 void (*callback)(struct ctdb_context *, int, void *),
840 enum ctdb_eventscript_call call,
841 const char *fmt, ...)
847 ret = ctdb_event_script_callback_v(ctdb, mem_ctx, callback, private_data, from_user, call, fmt, ap);
854 struct callback_status {
860 called when ctdb_event_script() finishes
862 static void event_script_callback(struct ctdb_context *ctdb, int status, void *private_data)
864 struct callback_status *s = (struct callback_status *)private_data;
870 run the event script, waiting for it to complete. Used when the caller
871 doesn't want to continue till the event script has finished.
873 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
874 const char *fmt, ...)
878 struct callback_status status;
881 ret = ctdb_event_script_callback_v(ctdb, ctdb,
882 event_script_callback, &status, false, call, fmt, ap);
891 while (status.done == false && event_loop_once(ctdb->ev) == 0) /* noop */;
893 if (status.status == -ETIME) {
894 DEBUG(DEBUG_ERR, (__location__ " eventscript for '%s' timedout."
895 " Immediately banning ourself for %d seconds\n",
896 ctdb_eventscript_call_names[call],
897 ctdb->tunable.recovery_ban_period));
899 /* Don't ban self if CTDB is starting up or shutting down */
900 if (call != CTDB_EVENT_INIT && call != CTDB_EVENT_SHUTDOWN) {
905 return status.status;
908 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call)
910 /* GCC complains about empty format string, so use %s and "". */
911 return ctdb_event_script_args(ctdb, call, "%s", "");
914 struct eventscript_callback_state {
915 struct ctdb_req_control *c;
919 called when a forced eventscript run has finished
921 static void run_eventscripts_callback(struct ctdb_context *ctdb, int status,
924 struct eventscript_callback_state *state =
925 talloc_get_type(private_data, struct eventscript_callback_state);
927 ctdb_enable_monitoring(ctdb);
930 DEBUG(DEBUG_ERR,(__location__ " Failed to run eventscripts\n"));
933 ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
934 /* This will free the struct ctdb_event_script_state we are in! */
940 /* Returns rest of string, or NULL if no match. */
941 static const char *get_call(const char *p, enum ctdb_eventscript_call *call)
945 /* Skip any initial whitespace. */
946 p += strspn(p, " \t");
948 /* See if we match any. */
949 for (*call = 0; *call < CTDB_EVENT_MAX; (*call)++) {
950 len = strlen(ctdb_eventscript_call_names[*call]);
951 if (strncmp(p, ctdb_eventscript_call_names[*call], len) == 0) {
952 /* If end of string or whitespace, we're done. */
953 if (strcspn(p + len, " \t") == 0) {
962 A control to force running of the eventscripts from the ctdb client tool
964 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb,
965 struct ctdb_req_control *c,
966 TDB_DATA indata, bool *async_reply)
969 struct eventscript_callback_state *state;
971 enum ctdb_eventscript_call call;
973 /* Figure out what call they want. */
974 options = get_call((const char *)indata.dptr, &call);
976 DEBUG(DEBUG_ERR, (__location__ " Invalid event name \"%s\"\n", (const char *)indata.dptr));
980 if (ctdb->recovery_mode != CTDB_RECOVERY_NORMAL) {
981 DEBUG(DEBUG_ERR, (__location__ " Aborted running eventscript \"%s\" while in RECOVERY mode\n", indata.dptr));
985 state = talloc(ctdb->event_script_ctx, struct eventscript_callback_state);
986 CTDB_NO_MEMORY(ctdb, state);
988 state->c = talloc_steal(state, c);
990 DEBUG(DEBUG_NOTICE,("Running eventscripts with arguments %s\n", indata.dptr));
992 ctdb_disable_monitoring(ctdb);
994 ret = ctdb_event_script_callback(ctdb,
995 state, run_eventscripts_callback, state,
996 true, call, "%s", options);
999 ctdb_enable_monitoring(ctdb);
1000 DEBUG(DEBUG_ERR,(__location__ " Failed to run eventscripts with arguments %s\n", indata.dptr));
1005 /* tell ctdb_control.c that we will be replying asynchronously */
1006 *async_reply = true;
1013 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata)
1018 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
1020 script = (char *)indata.dptr;
1021 if (indata.dsize == 0) {
1022 DEBUG(DEBUG_ERR,(__location__ " No script specified.\n"));
1023 talloc_free(tmp_ctx);
1026 if (indata.dptr[indata.dsize - 1] != '\0') {
1027 DEBUG(DEBUG_ERR,(__location__ " String is not null terminated.\n"));
1028 talloc_free(tmp_ctx);
1031 if (index(script,'/') != NULL) {
1032 DEBUG(DEBUG_ERR,(__location__ " Script name contains '/'. Failed to enable script %s\n", script));
1033 talloc_free(tmp_ctx);
1038 if (stat(ctdb->event_script_dir, &st) != 0 &&
1040 DEBUG(DEBUG_CRIT,("No event script directory found at '%s'\n", ctdb->event_script_dir));
1041 talloc_free(tmp_ctx);
1046 filename = talloc_asprintf(tmp_ctx, "%s/%s", ctdb->event_script_dir, script);
1047 if (filename == NULL) {
1048 DEBUG(DEBUG_ERR,(__location__ " Failed to create script path\n"));
1049 talloc_free(tmp_ctx);
1053 if (stat(filename, &st) != 0) {
1054 DEBUG(DEBUG_ERR,("Could not stat event script %s. Failed to enable script.\n", filename));
1055 talloc_free(tmp_ctx);
1059 if (chmod(filename, st.st_mode | S_IXUSR) == -1) {
1060 DEBUG(DEBUG_ERR,("Could not chmod %s. Failed to enable script.\n", filename));
1061 talloc_free(tmp_ctx);
1065 talloc_free(tmp_ctx);
1069 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata)
1074 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
1076 script = (char *)indata.dptr;
1077 if (indata.dsize == 0) {
1078 DEBUG(DEBUG_ERR,(__location__ " No script specified.\n"));
1079 talloc_free(tmp_ctx);
1082 if (indata.dptr[indata.dsize - 1] != '\0') {
1083 DEBUG(DEBUG_ERR,(__location__ " String is not null terminated.\n"));
1084 talloc_free(tmp_ctx);
1087 if (index(script,'/') != NULL) {
1088 DEBUG(DEBUG_ERR,(__location__ " Script name contains '/'. Failed to disable script %s\n", script));
1089 talloc_free(tmp_ctx);
1094 if (stat(ctdb->event_script_dir, &st) != 0 &&
1096 DEBUG(DEBUG_CRIT,("No event script directory found at '%s'\n", ctdb->event_script_dir));
1097 talloc_free(tmp_ctx);
1102 filename = talloc_asprintf(tmp_ctx, "%s/%s", ctdb->event_script_dir, script);
1103 if (filename == NULL) {
1104 DEBUG(DEBUG_ERR,(__location__ " Failed to create script path\n"));
1105 talloc_free(tmp_ctx);
1109 if (stat(filename, &st) != 0) {
1110 DEBUG(DEBUG_ERR,("Could not stat event script %s. Failed to disable script.\n", filename));
1111 talloc_free(tmp_ctx);
1115 if (chmod(filename, st.st_mode & ~(S_IXUSR|S_IXGRP|S_IXOTH)) == -1) {
1116 DEBUG(DEBUG_ERR,("Could not chmod %s. Failed to disable script.\n", filename));
1117 talloc_free(tmp_ctx);
1121 talloc_free(tmp_ctx);