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)
37 /* all the child processes will be running in the same process group */
38 kill(-getpgrp(), SIGKILL);
42 /* This is attached to the event script state. */
43 struct event_script_callback {
44 struct event_script_callback *next, *prev;
45 struct ctdb_context *ctdb;
47 /* Warning: this can free us! */
48 void (*fn)(struct ctdb_context *, int, void *);
53 struct ctdb_event_script_state {
54 struct ctdb_context *ctdb;
55 struct event_script_callback *callback;
59 enum ctdb_eventscript_call call;
61 struct timeval timeout;
64 struct ctdb_scripts_wire *scripts;
67 static struct ctdb_script_wire *get_current_script(struct ctdb_event_script_state *state)
69 return &state->scripts->scripts[state->current];
72 /* called from ctdb_logging when we have received output on STDERR from
73 * one of the eventscripts
75 static void log_event_script_output(const char *str, uint16_t len, void *p)
77 struct ctdb_event_script_state *state
78 = talloc_get_type(p, struct ctdb_event_script_state);
79 struct ctdb_script_wire *current;
80 unsigned int slen, min;
82 /* We may have been aborted to run something else. Discard */
83 if (state->scripts == NULL) {
87 current = get_current_script(state);
89 /* Append, but don't overfill buffer. It starts zero-filled. */
90 slen = strlen(current->output);
91 min = MIN(len, sizeof(current->output) - slen - 1);
93 memcpy(current->output + slen, str, min);
96 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
100 if (call_type >= CTDB_EVENT_MAX) {
104 if (ctdb->last_status[call_type] == NULL) {
105 /* If it's never been run, return nothing so they can tell. */
108 outdata->dsize = talloc_get_size(ctdb->last_status[call_type]);
109 outdata->dptr = (uint8_t *)ctdb->last_status[call_type];
114 struct ctdb_script_tree_item {
119 /* Return true if OK, otherwise set errno. */
120 static bool check_executable(const char *dir, const char *name)
125 full = talloc_asprintf(NULL, "%s/%s", dir, name);
129 if (stat(full, &st) != 0) {
130 DEBUG(DEBUG_ERR,("Could not stat event script %s: %s\n",
131 full, strerror(errno)));
136 if (!(st.st_mode & S_IXUSR)) {
137 DEBUG(DEBUG_DEBUG,("Event script %s is not executable. Ignoring this event script\n", full));
147 static struct ctdb_scripts_wire *ctdb_get_script_list(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx)
153 struct ctdb_scripts_wire *scripts;
154 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
155 struct ctdb_script_tree_item *tree_item;
159 the service specific event scripts
161 if (stat(ctdb->event_script_dir, &st) != 0 &&
163 DEBUG(DEBUG_CRIT,("No event script directory found at '%s'\n", ctdb->event_script_dir));
164 talloc_free(tmp_ctx);
168 /* create a tree to store all the script names in */
169 tree = trbt_create(tmp_ctx, 0);
171 /* scan all directory entries and insert all valid scripts into the
174 dir = opendir(ctdb->event_script_dir);
176 DEBUG(DEBUG_CRIT,("Failed to open event script directory '%s'\n", ctdb->event_script_dir));
177 talloc_free(tmp_ctx);
182 while ((de=readdir(dir)) != NULL) {
186 namlen = strlen(de->d_name);
192 if (de->d_name[namlen-1] == '~') {
193 /* skip files emacs left behind */
197 if (de->d_name[2] != '.') {
201 if (sscanf(de->d_name, "%02u.", &num) != 1) {
205 if (strlen(de->d_name) > MAX_SCRIPT_NAME) {
206 DEBUG(DEBUG_ERR,("Script name %s too long! %u chars max",
207 de->d_name, MAX_SCRIPT_NAME));
211 tree_item = talloc(tree, struct ctdb_script_tree_item);
212 if (tree_item == NULL) {
213 DEBUG(DEBUG_ERR, (__location__ " Failed to allocate new tree item\n"));
214 talloc_free(tmp_ctx);
218 tree_item->error = 0;
219 if (!check_executable(ctdb->event_script_dir, de->d_name)) {
220 tree_item->error = errno;
223 tree_item->name = talloc_strdup(tree_item, de->d_name);
224 if (tree_item->name == NULL) {
225 DEBUG(DEBUG_ERR,(__location__ " Failed to allocate script name.\n"));
226 talloc_free(tmp_ctx);
230 /* store the event script in the tree */
231 trbt_insert32(tree, (num<<16)|count++, tree_item);
235 /* Overallocates by one, but that's OK */
236 scripts = talloc_zero_size(tmp_ctx,
238 + sizeof(scripts->scripts[0]) * count);
239 if (scripts == NULL) {
240 DEBUG(DEBUG_ERR, (__location__ " Failed to allocate scripts\n"));
241 talloc_free(tmp_ctx);
244 scripts->num_scripts = count;
246 for (count = 0; count < scripts->num_scripts; count++) {
247 tree_item = trbt_findfirstarray32(tree, 1);
249 strcpy(scripts->scripts[count].name, tree_item->name);
250 scripts->scripts[count].status = -tree_item->error;
252 /* remove this script from the tree */
253 talloc_free(tree_item);
256 talloc_steal(mem_ctx, scripts);
257 talloc_free(tmp_ctx);
261 static int child_setup(struct ctdb_context *ctdb)
263 if (setpgid(0,0) != 0) {
265 DEBUG(DEBUG_ERR,("Failed to create process group for event scripts - %s\n",
270 signal(SIGTERM, sigterm);
274 static char *child_command_string(struct ctdb_context *ctdb,
277 const char *scriptname,
278 enum ctdb_eventscript_call call,
281 const char *str = from_user ? "CTDB_CALLED_BY_USER=1 " : "";
283 /* Allow a setting where we run the actual monitor event
284 from an external source and replace it with
285 a "status" event that just picks up the actual
286 status of the event asynchronously.
288 if ((ctdb->tunable.use_status_events_for_monitoring != 0)
289 && (call == CTDB_EVENT_MONITOR)
291 return talloc_asprintf(ctx, "%s%s/%s %s",
293 ctdb->event_script_dir,
294 scriptname, "status");
296 return talloc_asprintf(ctx, "%s%s/%s %s %s",
298 ctdb->event_script_dir,
300 ctdb_eventscript_call_names[call],
305 static int child_run_one(struct ctdb_context *ctdb,
306 const char *scriptname, const char *cmdstr)
310 ret = system(cmdstr);
311 /* if the system() call was successful, translate ret into the
312 return code from the command
315 ret = WEXITSTATUS(ret);
320 /* 127 could mean it does not exist, 126 non-executable. */
321 if (ret == 127 || ret == 126) {
323 if (!check_executable(ctdb->event_script_dir, scriptname)) {
324 DEBUG(DEBUG_ERR,("Script %s returned status %u. Someone just deleted it?\n",
333 Actually run one event script
334 this function is called and run in the context of a forked child
335 which allows it to do blocking calls such as system()
337 static int child_run_script(struct ctdb_context *ctdb,
339 enum ctdb_eventscript_call call,
341 struct ctdb_script_wire *current)
345 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
347 ret = child_setup(ctdb);
351 cmdstr = child_command_string(ctdb, tmp_ctx, from_user,
352 current->name, call, options);
353 CTDB_NO_MEMORY(ctdb, cmdstr);
355 DEBUG(DEBUG_DEBUG,("Executing event script %s\n",cmdstr));
357 if (current->status) {
358 ret = current->status;
362 ret = child_run_one(ctdb, current->name, cmdstr);
364 talloc_free(tmp_ctx);
368 static void ctdb_event_script_handler(struct event_context *ev, struct fd_event *fde,
369 uint16_t flags, void *p);
371 static int fork_child_for_script(struct ctdb_context *ctdb,
372 struct ctdb_event_script_state *state)
375 struct tevent_fd *fde;
376 struct ctdb_script_wire *current = get_current_script(state);
378 current->start = timeval_current();
382 DEBUG(DEBUG_ERR, (__location__ " pipe failed for child eventscript process\n"));
386 if (!ctdb_fork_with_logging(state, ctdb, current->name, log_event_script_output,
387 state, &state->child)) {
394 /* If we are the child, do the work. */
395 if (state->child == 0) {
398 debug_extra = talloc_asprintf(NULL, "eventscript-%s-%s:",
400 ctdb_eventscript_call_names[state->call]);
402 set_close_on_exec(state->fd[1]);
404 rt = child_run_script(ctdb, state->from_user, state->call, state->options, current);
405 /* We must be able to write PIPEBUF bytes at least; if this
406 somehow fails, the read above will be short. */
407 write(state->fd[1], &rt, sizeof(rt));
413 set_close_on_exec(state->fd[0]);
415 DEBUG(DEBUG_DEBUG, (__location__ " Created PIPE FD:%d to child eventscript process\n", state->fd[0]));
417 /* Set ourselves up to be called when that's done. */
418 fde = event_add_fd(ctdb->ev, state, state->fd[0], EVENT_FD_READ,
419 ctdb_event_script_handler, state);
420 tevent_fd_set_auto_close(fde);
426 Summarize status of this run of scripts.
428 static int script_status(struct ctdb_scripts_wire *scripts)
432 for (i = 0; i < scripts->num_scripts; i++) {
433 switch (scripts->scripts[i].status) {
436 /* Disabled or missing; that's OK. */
442 return scripts->scripts[i].status;
450 /* called when child is finished */
451 static void ctdb_event_script_handler(struct event_context *ev, struct fd_event *fde,
452 uint16_t flags, void *p)
454 struct ctdb_event_script_state *state =
455 talloc_get_type(p, struct ctdb_event_script_state);
456 struct ctdb_script_wire *current = get_current_script(state);
457 struct ctdb_context *ctdb = state->ctdb;
461 DEBUG(DEBUG_ERR,("Eventscript finished but ctdb is NULL\n"));
465 r = read(state->fd[0], ¤t->status, sizeof(current->status));
467 current->status = -errno;
468 } else if (r != sizeof(current->status)) {
469 current->status = -EIO;
472 current->finished = timeval_current();
473 /* valgrind gets overloaded if we run next script as it's still doing
474 * post-execution analysis, so kill finished child here. */
475 if (ctdb->valgrinding) {
476 ctdb_kill(ctdb, state->child, SIGKILL);
481 status = script_status(state->scripts);
483 /* Aborted or finished all scripts? We're done. */
484 if (status != 0 || state->current+1 == state->scripts->num_scripts) {
485 DEBUG(DEBUG_INFO,(__location__ " Eventscript %s %s finished with state %d\n",
486 ctdb_eventscript_call_names[state->call], state->options, status));
488 ctdb->event_script_timeouts = 0;
493 /* Forget about that old fd. */
499 current->status = fork_child_for_script(ctdb, state);
500 if (current->status != 0) {
501 /* This calls the callback. */
506 static void ctdb_run_debug_hung_script(struct ctdb_context *ctdb, struct ctdb_event_script_state *state)
508 struct ctdb_script_wire *current = get_current_script(state);
511 const char * debug_hung_script = ETCDIR "/ctdb/debug-hung-script.sh";
513 cmd = child_command_string(ctdb, state,
514 state->from_user, current->name,
515 state->call, state->options);
516 CTDB_NO_MEMORY_VOID(state->ctdb, cmd);
518 DEBUG(DEBUG_ERR,("Timed out running script '%s' after %.1f seconds pid :%d\n",
519 cmd, timeval_elapsed(¤t->start), state->child));
522 if (!ctdb_fork_with_logging(ctdb, ctdb, "Hung script", NULL, NULL, &pid)) {
523 DEBUG(DEBUG_ERR,("Failed to fork a child process with logging to track hung event script\n"));
524 ctdb_kill(state->ctdb, state->child, SIGTERM);
528 DEBUG(DEBUG_ERR,("Fork for debug script failed : %s\n",
530 ctdb_kill(state->ctdb, state->child, SIGTERM);
536 if (getenv("CTDB_DEBUG_HUNG_SCRIPT") != NULL) {
537 debug_hung_script = getenv("CTDB_DEBUG_HUNG_SCRIPT");
540 buf = talloc_asprintf(NULL, "%s %d",
541 debug_hung_script, state->child);
545 /* Now we can kill the child */
546 ctdb_kill(state->ctdb, state->child, SIGTERM);
550 /* Don't kill child until timeout done. */
554 /* called when child times out */
555 static void ctdb_event_script_timeout(struct event_context *ev, struct timed_event *te,
556 struct timeval t, void *p)
558 struct ctdb_event_script_state *state = talloc_get_type(p, struct ctdb_event_script_state);
559 struct ctdb_context *ctdb = state->ctdb;
560 struct ctdb_script_wire *current = get_current_script(state);
562 DEBUG(DEBUG_ERR,("Event script timed out : %s %s %s count : %u pid : %d\n",
563 current->name, ctdb_eventscript_call_names[state->call], state->options, ctdb->event_script_timeouts, state->child));
565 /* ignore timeouts for these events */
566 switch (state->call) {
567 case CTDB_EVENT_START_RECOVERY:
568 case CTDB_EVENT_RECOVERED:
569 case CTDB_EVENT_TAKE_IP:
570 case CTDB_EVENT_RELEASE_IP:
571 case CTDB_EVENT_STOPPED:
572 case CTDB_EVENT_STATUS:
573 state->scripts->scripts[state->current].status = 0;
574 DEBUG(DEBUG_ERR,("Ignoring hung script for %s call %d\n", state->options, state->call));
575 ctdb_run_debug_hung_script(ctdb, state);
578 state->scripts->scripts[state->current].status = -ETIME;
579 ctdb_run_debug_hung_script(ctdb, state);
586 destroy an event script: kill it if ->child != 0.
588 static int event_script_destructor(struct ctdb_event_script_state *state)
591 struct event_script_callback *callback;
594 DEBUG(DEBUG_ERR,(__location__ " Sending SIGTERM to child pid:%d\n", state->child));
596 if (ctdb_kill(state->ctdb, state->child, SIGTERM) != 0) {
597 DEBUG(DEBUG_ERR,("Failed to kill child process for eventscript, errno %s(%d)\n", strerror(errno), errno));
601 /* If we were the current monitor, we no longer are. */
602 if (state->ctdb->current_monitor == state) {
603 state->ctdb->current_monitor = NULL;
606 /* Save our scripts as the last executed status, if we have them.
607 * See ctdb_event_script_callback_v where we abort monitor event. */
608 if (state->scripts) {
609 talloc_free(state->ctdb->last_status[state->call]);
610 state->ctdb->last_status[state->call] = state->scripts;
611 if (state->current < state->ctdb->last_status[state->call]->num_scripts) {
612 state->ctdb->last_status[state->call]->num_scripts = state->current+1;
616 /* Use last status as result, or "OK" if none. */
617 if (state->ctdb->last_status[state->call]) {
618 status = script_status(state->ctdb->last_status[state->call]);
623 /* This is allowed to free us; talloc will prevent double free anyway,
624 * but beware if you call this outside the destructor!
625 * the callback hangs off a different context so we walk the list
626 * of "active" callbacks until we find the one state points to.
627 * if we cant find it it means the callback has been removed.
629 for (callback = state->ctdb->script_callbacks; callback != NULL; callback = callback->next) {
630 if (callback == state->callback) {
635 state->callback = NULL;
638 /* Make sure destructor doesn't free itself! */
639 talloc_steal(NULL, callback);
640 callback->fn(state->ctdb, status, callback->private_data);
641 talloc_free(callback);
647 static unsigned int count_words(const char *options)
649 unsigned int words = 0;
651 options += strspn(options, " \t");
654 options += strcspn(options, " \t");
655 options += strspn(options, " \t");
660 static bool check_options(enum ctdb_eventscript_call call, const char *options)
663 /* These all take no arguments. */
664 case CTDB_EVENT_INIT:
665 case CTDB_EVENT_SETUP:
666 case CTDB_EVENT_STARTUP:
667 case CTDB_EVENT_START_RECOVERY:
668 case CTDB_EVENT_RECOVERED:
669 case CTDB_EVENT_STOPPED:
670 case CTDB_EVENT_MONITOR:
671 case CTDB_EVENT_STATUS:
672 case CTDB_EVENT_SHUTDOWN:
673 case CTDB_EVENT_RELOAD:
674 case CTDB_EVENT_IPREALLOCATED:
675 return count_words(options) == 0;
677 case CTDB_EVENT_TAKE_IP: /* interface, IP address, netmask bits. */
678 case CTDB_EVENT_RELEASE_IP:
679 return count_words(options) == 3;
681 case CTDB_EVENT_UPDATE_IP: /* old interface, new interface, IP address, netmask bits. */
682 return count_words(options) == 4;
685 DEBUG(DEBUG_ERR,(__location__ "Unknown ctdb_eventscript_call %u\n", call));
690 static int remove_callback(struct event_script_callback *callback)
692 DLIST_REMOVE(callback->ctdb->script_callbacks, callback);
697 run the event script in the background, calling the callback when
700 static int ctdb_event_script_callback_v(struct ctdb_context *ctdb,
702 void (*callback)(struct ctdb_context *, int, void *),
705 enum ctdb_eventscript_call call,
706 const char *fmt, va_list ap)
708 struct ctdb_event_script_state *state;
710 if (ctdb->recovery_mode != CTDB_RECOVERY_NORMAL) {
711 /* we guarantee that only some specifically allowed event scripts are run
713 const enum ctdb_eventscript_call allowed_calls[] = {
716 CTDB_EVENT_START_RECOVERY,
718 CTDB_EVENT_RELEASE_IP,
722 for (i=0;i<ARRAY_SIZE(allowed_calls);i++) {
723 if (call == allowed_calls[i]) break;
725 if (i == ARRAY_SIZE(allowed_calls)) {
726 DEBUG(DEBUG_ERR,("Refusing to run event scripts call '%s' while in recovery\n",
727 ctdb_eventscript_call_names[call]));
732 /* Kill off any running monitor events to run this event. */
733 if (ctdb->current_monitor) {
734 struct ctdb_event_script_state *ms = talloc_get_type(ctdb->current_monitor, struct ctdb_event_script_state);
736 /* Cancel current monitor callback state only if monitoring
737 * context ctdb->monitor->monitor_context has not been freed */
738 if (ms->callback != NULL && !ctdb_stopped_monitoring(ctdb)) {
739 ms->callback->fn(ctdb, -ECANCELED, ms->callback->private_data);
740 talloc_free(ms->callback);
743 /* Discard script status so we don't save to last_status */
744 talloc_free(ctdb->current_monitor->scripts);
745 ctdb->current_monitor->scripts = NULL;
746 talloc_free(ctdb->current_monitor);
747 ctdb->current_monitor = NULL;
750 state = talloc(ctdb->event_script_ctx, struct ctdb_event_script_state);
751 CTDB_NO_MEMORY(ctdb, state);
753 /* The callback isn't done if the context is freed. */
754 state->callback = talloc(mem_ctx, struct event_script_callback);
755 CTDB_NO_MEMORY(ctdb, state->callback);
756 DLIST_ADD(ctdb->script_callbacks, state->callback);
757 talloc_set_destructor(state->callback, remove_callback);
758 state->callback->ctdb = ctdb;
759 state->callback->fn = callback;
760 state->callback->private_data = private_data;
763 state->from_user = from_user;
765 state->options = talloc_vasprintf(state, fmt, ap);
766 state->timeout = timeval_set(ctdb->tunable.script_timeout, 0);
767 state->scripts = NULL;
768 if (state->options == NULL) {
769 DEBUG(DEBUG_ERR, (__location__ " could not allocate state->options\n"));
773 if (!check_options(state->call, state->options)) {
774 DEBUG(DEBUG_ERR, ("Bad eventscript options '%s' for %s\n",
775 ctdb_eventscript_call_names[state->call], state->options));
780 DEBUG(DEBUG_INFO,(__location__ " Starting eventscript %s %s\n",
781 ctdb_eventscript_call_names[state->call],
784 /* This is not a child of state, since we save it in destructor. */
785 state->scripts = ctdb_get_script_list(ctdb, ctdb);
786 if (state->scripts == NULL) {
793 if (!from_user && (call == CTDB_EVENT_MONITOR || call == CTDB_EVENT_STATUS)) {
794 ctdb->current_monitor = state;
797 talloc_set_destructor(state, event_script_destructor);
800 if (state->scripts->num_scripts == 0) {
805 state->scripts->scripts[0].status = fork_child_for_script(ctdb, state);
806 if (state->scripts->scripts[0].status != 0) {
807 /* Callback is called from destructor, with fail result. */
812 if (!timeval_is_zero(&state->timeout)) {
813 event_add_timed(ctdb->ev, state, timeval_current_ofs(state->timeout.tv_sec, state->timeout.tv_usec), ctdb_event_script_timeout, state);
815 DEBUG(DEBUG_ERR, (__location__ " eventscript %s %s called with no timeout\n",
816 ctdb_eventscript_call_names[state->call],
825 run the event script in the background, calling the callback when
826 finished. If mem_ctx is freed, callback will never be called.
828 int ctdb_event_script_callback(struct ctdb_context *ctdb,
830 void (*callback)(struct ctdb_context *, int, void *),
833 enum ctdb_eventscript_call call,
834 const char *fmt, ...)
840 ret = ctdb_event_script_callback_v(ctdb, mem_ctx, callback, private_data, from_user, call, fmt, ap);
847 struct callback_status {
853 called when ctdb_event_script() finishes
855 static void event_script_callback(struct ctdb_context *ctdb, int status, void *private_data)
857 struct callback_status *s = (struct callback_status *)private_data;
863 run the event script, waiting for it to complete. Used when the caller
864 doesn't want to continue till the event script has finished.
866 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
867 const char *fmt, ...)
871 struct callback_status status;
874 ret = ctdb_event_script_callback_v(ctdb, ctdb,
875 event_script_callback, &status, false, call, fmt, ap);
884 while (status.done == false && event_loop_once(ctdb->ev) == 0) /* noop */;
886 if (status.status == -ETIME) {
887 DEBUG(DEBUG_ERR, (__location__ " eventscript for '%s' timedout."
888 " Immediately banning ourself for %d seconds\n",
889 ctdb_eventscript_call_names[call],
890 ctdb->tunable.recovery_ban_period));
894 return status.status;
897 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call)
899 /* GCC complains about empty format string, so use %s and "". */
900 return ctdb_event_script_args(ctdb, call, "%s", "");
903 struct eventscript_callback_state {
904 struct ctdb_req_control *c;
908 called when a forced eventscript run has finished
910 static void run_eventscripts_callback(struct ctdb_context *ctdb, int status,
913 struct eventscript_callback_state *state =
914 talloc_get_type(private_data, struct eventscript_callback_state);
916 ctdb_enable_monitoring(ctdb);
919 DEBUG(DEBUG_ERR,(__location__ " Failed to run eventscripts\n"));
922 ctdb_request_control_reply(ctdb, state->c, NULL, status, NULL);
923 /* This will free the struct ctdb_event_script_state we are in! */
929 /* Returns rest of string, or NULL if no match. */
930 static const char *get_call(const char *p, enum ctdb_eventscript_call *call)
934 /* Skip any initial whitespace. */
935 p += strspn(p, " \t");
937 /* See if we match any. */
938 for (*call = 0; *call < CTDB_EVENT_MAX; (*call)++) {
939 len = strlen(ctdb_eventscript_call_names[*call]);
940 if (strncmp(p, ctdb_eventscript_call_names[*call], len) == 0) {
941 /* If end of string or whitespace, we're done. */
942 if (strcspn(p + len, " \t") == 0) {
951 A control to force running of the eventscripts from the ctdb client tool
953 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb,
954 struct ctdb_req_control *c,
955 TDB_DATA indata, bool *async_reply)
958 struct eventscript_callback_state *state;
960 enum ctdb_eventscript_call call;
962 /* Figure out what call they want. */
963 options = get_call((const char *)indata.dptr, &call);
965 DEBUG(DEBUG_ERR, (__location__ " Invalid event name \"%s\"\n", (const char *)indata.dptr));
969 if (ctdb->recovery_mode != CTDB_RECOVERY_NORMAL) {
970 DEBUG(DEBUG_ERR, (__location__ " Aborted running eventscript \"%s\" while in RECOVERY mode\n", indata.dptr));
974 state = talloc(ctdb->event_script_ctx, struct eventscript_callback_state);
975 CTDB_NO_MEMORY(ctdb, state);
977 state->c = talloc_steal(state, c);
979 DEBUG(DEBUG_NOTICE,("Running eventscripts with arguments %s\n", indata.dptr));
981 ctdb_disable_monitoring(ctdb);
983 ret = ctdb_event_script_callback(ctdb,
984 state, run_eventscripts_callback, state,
985 true, call, "%s", options);
988 ctdb_enable_monitoring(ctdb);
989 DEBUG(DEBUG_ERR,(__location__ " Failed to run eventscripts with arguments %s\n", indata.dptr));
994 /* tell ctdb_control.c that we will be replying asynchronously */
1002 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata)
1007 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
1009 script = (char *)indata.dptr;
1010 if (indata.dsize == 0) {
1011 DEBUG(DEBUG_ERR,(__location__ " No script specified.\n"));
1012 talloc_free(tmp_ctx);
1015 if (indata.dptr[indata.dsize - 1] != '\0') {
1016 DEBUG(DEBUG_ERR,(__location__ " String is not null terminated.\n"));
1017 talloc_free(tmp_ctx);
1020 if (index(script,'/') != NULL) {
1021 DEBUG(DEBUG_ERR,(__location__ " Script name contains '/'. Failed to enable script %s\n", script));
1022 talloc_free(tmp_ctx);
1027 if (stat(ctdb->event_script_dir, &st) != 0 &&
1029 DEBUG(DEBUG_CRIT,("No event script directory found at '%s'\n", ctdb->event_script_dir));
1030 talloc_free(tmp_ctx);
1035 filename = talloc_asprintf(tmp_ctx, "%s/%s", ctdb->event_script_dir, script);
1036 if (filename == NULL) {
1037 DEBUG(DEBUG_ERR,(__location__ " Failed to create script path\n"));
1038 talloc_free(tmp_ctx);
1042 if (stat(filename, &st) != 0) {
1043 DEBUG(DEBUG_ERR,("Could not stat event script %s. Failed to enable script.\n", filename));
1044 talloc_free(tmp_ctx);
1048 if (chmod(filename, st.st_mode | S_IXUSR) == -1) {
1049 DEBUG(DEBUG_ERR,("Could not chmod %s. Failed to enable script.\n", filename));
1050 talloc_free(tmp_ctx);
1054 talloc_free(tmp_ctx);
1058 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata)
1063 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
1065 script = (char *)indata.dptr;
1066 if (indata.dsize == 0) {
1067 DEBUG(DEBUG_ERR,(__location__ " No script specified.\n"));
1068 talloc_free(tmp_ctx);
1071 if (indata.dptr[indata.dsize - 1] != '\0') {
1072 DEBUG(DEBUG_ERR,(__location__ " String is not null terminated.\n"));
1073 talloc_free(tmp_ctx);
1076 if (index(script,'/') != NULL) {
1077 DEBUG(DEBUG_ERR,(__location__ " Script name contains '/'. Failed to disable script %s\n", script));
1078 talloc_free(tmp_ctx);
1083 if (stat(ctdb->event_script_dir, &st) != 0 &&
1085 DEBUG(DEBUG_CRIT,("No event script directory found at '%s'\n", ctdb->event_script_dir));
1086 talloc_free(tmp_ctx);
1091 filename = talloc_asprintf(tmp_ctx, "%s/%s", ctdb->event_script_dir, script);
1092 if (filename == NULL) {
1093 DEBUG(DEBUG_ERR,(__location__ " Failed to create script path\n"));
1094 talloc_free(tmp_ctx);
1098 if (stat(filename, &st) != 0) {
1099 DEBUG(DEBUG_ERR,("Could not stat event script %s. Failed to disable script.\n", filename));
1100 talloc_free(tmp_ctx);
1104 if (chmod(filename, st.st_mode & ~(S_IXUSR|S_IXGRP|S_IXOTH)) == -1) {
1105 DEBUG(DEBUG_ERR,("Could not chmod %s. Failed to disable script.\n", filename));
1106 talloc_free(tmp_ctx);
1110 talloc_free(tmp_ctx);