diff options
Diffstat (limited to 'source4/cluster/ctdb/server/eventscript.c')
| -rw-r--r-- | source4/cluster/ctdb/server/eventscript.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/source4/cluster/ctdb/server/eventscript.c b/source4/cluster/ctdb/server/eventscript.c deleted file mode 100644 index e23157056c..0000000000 --- a/source4/cluster/ctdb/server/eventscript.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - event script handling - - Copyright (C) Andrew Tridgell 2007 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, see <http://www.gnu.org/licenses/>. -*/ - -#include "includes.h" -#include "system/filesys.h" -#include "system/wait.h" -#include "../include/ctdb_private.h" -#include "lib/events/events.h" - -/* - run the event script - varargs version - */ -static int ctdb_event_script_v(struct ctdb_context *ctdb, const char *fmt, va_list ap) -{ - char *options, *cmdstr; - int ret; - va_list ap2; - struct stat st; - - if (stat(ctdb->takeover.event_script, &st) != 0 && - errno == ENOENT) { - DEBUG(0,("No event script found at '%s'\n", ctdb->takeover.event_script)); - return 0; - } - - va_copy(ap2, ap); - options = talloc_vasprintf(ctdb, fmt, ap2); - va_end(ap2); - CTDB_NO_MEMORY(ctdb, options); - - cmdstr = talloc_asprintf(ctdb, "%s %s", ctdb->takeover.event_script, options); - CTDB_NO_MEMORY(ctdb, cmdstr); - - ret = system(cmdstr); - if (ret != -1) { - ret = WEXITSTATUS(ret); - } - - talloc_free(cmdstr); - talloc_free(options); - - return ret; -} - -/* - run the event script - */ -int ctdb_event_script(struct ctdb_context *ctdb, const char *fmt, ...) -{ - va_list ap; - int ret; - - va_start(ap, fmt); - ret = ctdb_event_script_v(ctdb, fmt, ap); - va_end(ap); - - return ret; -} - - -struct ctdb_event_script_state { - struct ctdb_context *ctdb; - pid_t child; - void (*callback)(struct ctdb_context *, int, void *); - int fd[2]; - void *private_data; -}; - -/* called when child is finished */ -static void ctdb_event_script_handler(struct event_context *ev, struct fd_event *fde, - uint16_t flags, void *p) -{ - struct ctdb_event_script_state *state = - talloc_get_type(p, struct ctdb_event_script_state); - int status = -1; - void (*callback)(struct ctdb_context *, int, void *) = state->callback; - void *private_data = state->private_data; - struct ctdb_context *ctdb = state->ctdb; - - waitpid(state->child, &status, 0); - if (status != -1) { - status = WEXITSTATUS(status); - } - talloc_set_destructor(state, NULL); - talloc_free(state); - callback(ctdb, status, private_data); -} - - -/* called when child times out */ -static void ctdb_event_script_timeout(struct event_context *ev, struct timed_event *te, - struct timeval t, void *p) -{ - struct ctdb_event_script_state *state = talloc_get_type(p, struct ctdb_event_script_state); - void (*callback)(struct ctdb_context *, int, void *) = state->callback; - void *private_data = state->private_data; - struct ctdb_context *ctdb = state->ctdb; - - DEBUG(0,("event script timed out\n")); - talloc_free(state); - callback(ctdb, -1, private_data); -} - -/* - destroy a running event script - */ -static int event_script_destructor(struct ctdb_event_script_state *state) -{ - kill(state->child, SIGKILL); - waitpid(state->child, NULL, 0); - return 0; -} - -/* - run the event script in the background, calling the callback when - finished - */ -int ctdb_event_script_callback(struct ctdb_context *ctdb, - struct timeval timeout, - TALLOC_CTX *mem_ctx, - void (*callback)(struct ctdb_context *, int, void *), - void *private_data, - const char *fmt, ...) -{ - struct ctdb_event_script_state *state; - va_list ap; - int ret; - - state = talloc(mem_ctx, struct ctdb_event_script_state); - CTDB_NO_MEMORY(ctdb, state); - - state->ctdb = ctdb; - state->callback = callback; - state->private_data = private_data; - - ret = pipe(state->fd); - if (ret != 0) { - talloc_free(state); - return -1; - } - - state->child = fork(); - - if (state->child == (pid_t)-1) { - close(state->fd[0]); - close(state->fd[1]); - talloc_free(state); - return -1; - } - - if (state->child == 0) { - close(state->fd[0]); - ctdb_set_realtime(false); - set_close_on_exec(state->fd[1]); - va_start(ap, fmt); - ret = ctdb_event_script_v(ctdb, fmt, ap); - va_end(ap); - _exit(ret); - } - - talloc_set_destructor(state, event_script_destructor); - - close(state->fd[1]); - - event_add_fd(ctdb->ev, state, state->fd[0], EVENT_FD_READ|EVENT_FD_AUTOCLOSE, - ctdb_event_script_handler, state); - - if (!timeval_is_zero(&timeout)) { - event_add_timed(ctdb->ev, state, timeout, ctdb_event_script_timeout, state); - } - - return 0; -} - - |