211 lines
3.7 KiB
C
211 lines
3.7 KiB
C
/*
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Copyright Red Hat, Inc. 2009
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
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MA 02139, USA.
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*/
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/*
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* Author: Lon Hohberger <lhh at redhat.com>
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*/
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#include <stdio.h>
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#include <simpleconfig.h>
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#include <static_map.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <time.h>
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#include <server_plugin.h>
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#include <string.h>
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#include <malloc.h>
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#include <errno.h>
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#define NAME "null"
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#define VERSION "0.8"
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#define MAGIC 0x1e00017a
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struct null_info {
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int magic;
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int pad;
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char *message;
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};
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#define VALIDATE(arg) \
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do {\
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if (!arg || ((struct null_info *)arg)->magic != MAGIC) { \
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errno = EINVAL;\
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return -1; \
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} \
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} while(0)
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static int
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null_null(const char *vm_name, void *priv)
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{
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VALIDATE(priv);
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printf("[Null] Null operation on %s\n", vm_name);
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return 1;
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}
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static int
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null_off(const char *vm_name, const char *src, uint32_t seqno, void *priv)
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{
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VALIDATE(priv);
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printf("[Null] OFF operation on %s\n", vm_name);
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return 1;
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}
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static int
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null_on(const char *vm_name, const char *src, uint32_t seqno, void *priv)
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{
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VALIDATE(priv);
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printf("[Null] ON operation on %s\n", vm_name);
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return 1;
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}
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static int
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null_devstatus(void *priv)
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{
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printf("[Null] Device status\n");
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VALIDATE(priv);
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printf("[Null] Message for you: %s\n",
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((struct null_info *)priv)->message);
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return 0;
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}
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static int
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null_status(const char *vm_name, void *priv)
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{
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VALIDATE(priv);
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printf("[Null] STATUS operation on %s\n", vm_name);
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return 1;
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}
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static int
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null_reboot(const char *vm_name, const char *src, uint32_t seqno, void *priv)
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{
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VALIDATE(priv);
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printf("[Null] REBOOT operation on %s\n", vm_name);
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return 1;
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}
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static int
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null_hostlist(hostlist_callback callback, void *arg, void *priv)
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{
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VALIDATE(priv);
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printf("[Null] HOSTLIST operation\n");
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return 1;
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}
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static int
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null_init(backend_context_t *c, config_object_t *config)
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{
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char value[256];
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struct null_info *info = NULL;
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char *null_message = NULL;
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info = malloc(sizeof(*info));
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if (!info)
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return -1;
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memset(info, 0, sizeof(*info));
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if (sc_get(config, "backends/null/@message",
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value, sizeof(value)) != 0) {
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snprintf(value, sizeof(value), "Hi!");
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}
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null_message = strdup(value);
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if (!null_message) {
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free(info);
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return -1;
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}
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info->magic = MAGIC;
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info->message = null_message;
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*c = (void *)info;
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return 0;
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}
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static int
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null_shutdown(backend_context_t c)
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{
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struct null_info *info = (struct null_info *)c;
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VALIDATE(info);
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info->magic = 0;
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free(info->message);
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free(info);
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return 0;
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}
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static fence_callbacks_t null_callbacks = {
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.null = null_null,
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.off = null_off,
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.on = null_on,
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.reboot = null_reboot,
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.status = null_status,
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.devstatus = null_devstatus,
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.hostlist = null_hostlist
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};
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static backend_plugin_t null_plugin = {
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.name = NAME,
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.version = VERSION,
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.callbacks = &null_callbacks,
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.init = null_init,
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.cleanup = null_shutdown,
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};
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#ifdef _MODULE
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double
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BACKEND_VER_SYM(void)
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{
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return PLUGIN_VERSION_BACKEND;
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}
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const backend_plugin_t *
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BACKEND_INFO_SYM(void)
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{
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return &null_plugin;
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}
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#else
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static void __attribute__((constructor))
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null_register_plugin(void)
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{
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plugin_reg_backend(&null_plugin);
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}
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#endif
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