diff --git a/lib/plugins/lrm/raexecocf.c b/lib/plugins/lrm/raexecocf.c index 1589e97175..243bc2624c 100644 --- a/lib/plugins/lrm/raexecocf.c +++ b/lib/plugins/lrm/raexecocf.c @@ -1,493 +1,494 @@ /* * 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 2.1 of the License, or (at your option) any later version. * * This software 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 library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * File: raexecocf.c * Author: Sun Jiang Dong * Copyright (c) 2004 International Business Machines * * This code implements the Resource Agent Plugin Module for LSB style. * It's a part of Local Resource Manager. Currently it's used by lrmd only. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Add it for compiling on OSX */ #include #include # define PIL_PLUGINTYPE RA_EXEC_TYPE # define PIL_PLUGINTYPE_S "RAExec" # define PIL_PLUGINLICENSE LICENSE_PUBDOM # define PIL_PLUGINLICENSEURL URL_PUBDOM # define PIL_PLUGIN ocf # define PIL_PLUGIN_S "ocf" /* * Are there multiple paths? Now according to OCF spec, the answer is 'no'. * But actually or for future? */ static const char * RA_PATH = OCF_RA_DIR; /* The begin of exported function list */ static int execra(const char * rsc_id, const char * rsc_type, const char * provider, const char * op_type, const int timeout, GHashTable * params); static uniform_ret_execra_t map_ra_retvalue(int ret_execra, const char * op_type, const char * std_output); static int get_resource_list(GList ** rsc_info); static char* get_resource_meta(const char* rsc_type, const char* provider); static int get_provider_list(const char* ra_type, GList ** providers); /* The end of exported function list */ /* The begin of internal used function & data list */ #define HADEBUGVAL "HA_DEBUG" static void add_OCF_prefix(GHashTable * params, GHashTable * new_params); static void add_OCF_env_vars(GHashTable * env, const char * rsc_id, const char * rsc_type, const char * provider); static void add_prefix_foreach(gpointer key, gpointer value, gpointer user_data); static void hash_to_str(GHashTable * , GString *); static void hash_to_str_foreach(gpointer key, gpointer value, gpointer user_data); static int raexec_setenv(GHashTable * env_params); static void set_env(gpointer key, gpointer value, gpointer user_data); static gboolean let_remove_eachitem(gpointer key, gpointer value, gpointer user_data); static int get_providers(const char* class_path, const char* op_type, GList ** providers); static void merge_string_list(GList** old, GList* new); static gint compare_str(gconstpointer a, gconstpointer b); /* The end of internal function & data list */ /* Rource agent execution plugin operations */ static struct RAExecOps raops = { execra, map_ra_retvalue, get_resource_list, get_provider_list, get_resource_meta }; PIL_PLUGIN_BOILERPLATE2("1.0", Debug) static const PILPluginImports* PluginImports; static PILPlugin* OurPlugin; static PILInterface* OurInterface; static void* OurImports; static void* interfprivate; /* * Our plugin initialization and registration function * It gets called when the plugin gets loaded. */ PIL_rc PIL_PLUGIN_INIT(PILPlugin * us, const PILPluginImports* imports); PIL_rc PIL_PLUGIN_INIT(PILPlugin * us, const PILPluginImports* imports) { /* Force the compiler to do a little type checking */ (void)(PILPluginInitFun)PIL_PLUGIN_INIT; PluginImports = imports; OurPlugin = us; /* Register ourself as a plugin */ imports->register_plugin(us, &OurPIExports); /* Register our interfaces */ return imports->register_interface(us, PIL_PLUGINTYPE_S, PIL_PLUGIN_S, &raops, NULL, &OurInterface, &OurImports, interfprivate); } /* * The function to execute a RA. */ static int execra(const char * rsc_id, const char * rsc_type, const char * provider, const char * op_type, const int timeout, GHashTable * params) { uniform_ret_execra_t exit_value; char ra_pathname[RA_MAX_NAME_LENGTH]; GHashTable * tmp_for_setenv; GString * params_gstring; char * inherit_debuglevel = NULL; get_ra_pathname(RA_PATH, rsc_type, provider, ra_pathname); /* Setup environment correctly */ tmp_for_setenv = g_hash_table_new(g_str_hash, g_str_equal); add_OCF_prefix(params, tmp_for_setenv); add_OCF_env_vars(tmp_for_setenv, rsc_id, rsc_type, provider); raexec_setenv(tmp_for_setenv); g_hash_table_foreach_remove(tmp_for_setenv, let_remove_eachitem, NULL); g_hash_table_destroy(tmp_for_setenv); /* let this log show only high loglevel. */ inherit_debuglevel = getenv(HADEBUGVAL); if ((inherit_debuglevel != NULL) && (atoi(inherit_debuglevel) > 1)) { params_gstring = g_string_new(""); hash_to_str(params, params_gstring); cl_log(LOG_DEBUG, "RA instance %s executing: OCF::%s %s. Parameters: " "{%s}", rsc_id, rsc_type, op_type, params_gstring->str); g_string_free(params_gstring, TRUE); } /* execute the RA */ execl(ra_pathname, ra_pathname, op_type, NULL); cl_perror("(%s:%s:%d) execl failed for %s" , __FILE__, __FUNCTION__, __LINE__, ra_pathname); switch (errno) { case ENOENT: /* No such file or directory */ case EISDIR: /* Is a directory */ exit_value = EXECRA_NO_RA; break; default: exit_value = EXECRA_EXEC_UNKNOWN_ERROR; } exit(exit_value); } static uniform_ret_execra_t map_ra_retvalue(int ret_execra, const char * op_type, const char * std_output) { /* Because the UNIFORM_RET_EXECRA is compatible with OCF standard, * no actual mapping except validating, which ensure the return code * will be in the range 0 to 7. Too strict? */ if (ret_execra < 0 || ret_execra > 9) { cl_log(LOG_WARNING, "mapped the invalid return code %d." , ret_execra); ret_execra = EXECRA_UNKNOWN_ERROR; } return ret_execra; } static gint compare_str(gconstpointer a, gconstpointer b) { return strncmp(a,b,RA_MAX_NAME_LENGTH); } static int get_resource_list(GList ** rsc_info) { struct dirent **namelist; GList* item; int file_num; char subdir[FILENAME_MAX+1]; if ( rsc_info == NULL ) { cl_log(LOG_ERR, "Parameter error: get_resource_list"); return -2; } if ( *rsc_info != NULL ) { cl_log(LOG_ERR, "Parameter error: get_resource_list."\ "will cause memory leak."); *rsc_info = NULL; } file_num = scandir(RA_PATH, &namelist, 0, alphasort); if (file_num < 0) { return -2; } while (file_num--) { GList* ra_subdir = NULL; struct stat prop; if ('.' == namelist[file_num]->d_name[0]) { free(namelist[file_num]); continue; } stat(namelist[file_num]->d_name, &prop); if (S_ISDIR(prop.st_mode)) { free(namelist[file_num]); continue; } snprintf(subdir,FILENAME_MAX,"%s/%s", RA_PATH, namelist[file_num]->d_name); get_runnable_list(subdir,&ra_subdir); merge_string_list(rsc_info,ra_subdir); while (NULL != (item = g_list_first(ra_subdir))) { ra_subdir = g_list_remove_link(ra_subdir, item); g_free(item->data); g_list_free_1(item); } free(namelist[file_num]); } free(namelist); return 0; } static void merge_string_list(GList** old, GList* new) { GList* item = NULL; char* newitem; for( item=g_list_first(new); NULL!=item; item=g_list_next(item)){ if (!g_list_find_custom(*old, item->data,compare_str)){ newitem = g_strndup(item->data,RA_MAX_NAME_LENGTH); *old = g_list_append(*old, newitem); } } } static int get_provider_list(const char* ra_type, GList ** providers) { int ret; ret = get_providers(RA_PATH, ra_type, providers); if (0>ret) { cl_log(LOG_ERR, "scandir failed in OCF RA plugin"); } return ret; } static char* get_resource_meta(const char* rsc_type, const char* provider) { const int BUFF_LEN=4096; int read_len = 0; char buff[BUFF_LEN]; char* data = NULL; GString* g_str_tmp = NULL; char ra_pathname[RA_MAX_NAME_LENGTH]; FILE* file = NULL; GHashTable * tmp_for_setenv; get_ra_pathname(RA_PATH, rsc_type, provider, ra_pathname); strncat(ra_pathname, " meta-data",RA_MAX_NAME_LENGTH); tmp_for_setenv = g_hash_table_new(g_str_hash, g_str_equal); add_OCF_env_vars(tmp_for_setenv, "DUMMY_INSTANCE", rsc_type, provider); raexec_setenv(tmp_for_setenv); g_hash_table_foreach_remove(tmp_for_setenv, let_remove_eachitem, NULL); g_hash_table_destroy(tmp_for_setenv); file = popen(ra_pathname, "r"); if (NULL==file) { return NULL; } g_str_tmp = g_string_new(""); while(!feof(file)) { memset(buff, 0, BUFF_LEN); read_len = fread(buff, 1, BUFF_LEN - 1, file); if (0len) { pclose(file); return NULL; } data = (char*)g_new(char, g_str_tmp->len+1); data[0] = data[g_str_tmp->len] = 0; strncpy(data, g_str_tmp->str, g_str_tmp->len); g_string_free(g_str_tmp, TRUE); pclose(file); return data; } static void add_OCF_prefix(GHashTable * env_params, GHashTable * new_env_params) { if (env_params) { g_hash_table_foreach(env_params, add_prefix_foreach, new_env_params); } } static void add_prefix_foreach(gpointer key, gpointer value, gpointer user_data) { const int MAX_LENGTH_OF_ENV = 50; int prefix = STRLEN_CONST("OCF_RESKEY_"); GHashTable * new_hashtable = (GHashTable *) user_data; char * newkey; int keylen = strnlen((char*)key, MAX_LENGTH_OF_ENV-prefix)+prefix+1; newkey = g_new(gchar, keylen); strncpy(newkey, "OCF_RESKEY_", keylen); strncat(newkey, key, keylen); g_hash_table_insert(new_hashtable, (gpointer)newkey, g_strdup(value)); } static void hash_to_str(GHashTable * params , GString * str) { if (params) { g_hash_table_foreach(params, hash_to_str_foreach, str); } } static void hash_to_str_foreach(gpointer key, gpointer value, gpointer user_data) { char buffer_tmp[60]; GString * str = (GString *)user_data; snprintf(buffer_tmp, 60, "%s=%s ", (char *)key, (char *)value); str = g_string_append(str, buffer_tmp); } static gboolean let_remove_eachitem(gpointer key, gpointer value, gpointer user_data) { g_free(key); g_free(value); return TRUE; } static int raexec_setenv(GHashTable * env_params) { if (env_params) { g_hash_table_foreach(env_params, set_env, NULL); } return 0; } static void set_env(gpointer key, gpointer value, gpointer user_data) { if (setenv(key, value, 1) != 0) { cl_log(LOG_ERR, "setenv failed in raexecocf."); } } static int get_providers(const char* class_path, const char* ra_type, GList ** providers) { struct dirent **namelist; int file_num; if ( providers == NULL ) { cl_log(LOG_ERR, "Parameter error: get_providers"); return -2; } if ( *providers != NULL ) { cl_log(LOG_ERR, "Parameter error: get_providers."\ "will cause memory leak."); *providers = NULL; } file_num = scandir(class_path, &namelist, 0, alphasort); if (file_num < 0) { return -2; }else{ char tmp_buffer[FILENAME_MAX+1]; struct stat prop; while (file_num--) { if ('.' == namelist[file_num]->d_name[0]) { free(namelist[file_num]); continue; } - - stat(namelist[file_num]->d_name, &prop); + snprintf(tmp_buffer,FILENAME_MAX,"%s/%s", + class_path, namelist[file_num]->d_name); + stat(tmp_buffer, &prop); if (!S_ISDIR(prop.st_mode)) { free(namelist[file_num]); continue; } snprintf(tmp_buffer,FILENAME_MAX,"%s/%s/%s", class_path, namelist[file_num]->d_name, ra_type); if ( filtered(tmp_buffer) == TRUE ) { *providers = g_list_append(*providers, g_strdup(namelist[file_num]->d_name)); } free(namelist[file_num]); } free(namelist); } return g_list_length(*providers); } static void add_OCF_env_vars(GHashTable * env, const char * rsc_id, const char * rsc_type, const char * provider) { if ( env == NULL ) { cl_log(LOG_WARNING, "env should not be a NULL pointer."); return; } g_hash_table_insert(env, g_strdup("OCF_RA_VERSION_MAJOR"), g_strdup("1")); g_hash_table_insert(env, g_strdup("OCF_RA_VERSION_MINOR"), g_strdup("0")); g_hash_table_insert(env, g_strdup("OCF_ROOT"), g_strdup(OCF_ROOT_DIR)); if ( rsc_id != NULL ) { g_hash_table_insert(env, g_strdup("OCF_RESOURCE_INSTANCE"), g_strdup(rsc_id)); } /* Currently the rsc_type=="the filename of the RA script/executable", * It seems always correct even in the furture. ;-) */ if ( rsc_type != NULL ) { g_hash_table_insert(env, g_strdup("OCF_RESOURCE_TYPE"), g_strdup(rsc_type)); } /* Notes: this is not added to specification yet. Sept 10,2004 */ if ( provider != NULL ) { g_hash_table_insert(env, g_strdup("OCF_RESOURCE_PROVIDER"), g_strdup(provider)); } }