--- /dev/null
+/*
+ * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "sessiond-config.h"
+#include <assert.h>
+#include "lttng-ust-ctl.h"
+#include <common/defaults.h>
+#include <limits.h>
+#include <errno.h>
+#include <ctype.h>
+#include <common/error.h>
+#include <common/utils.h>
+#include <common/compat/getenv.h>
+
+static
+struct sessiond_config sessiond_config_build_defaults = {
+ .quiet = false,
+ .verbose = 0,
+ .verbose_consumer = 0,
+
+ .agent_tcp_port = DEFAULT_AGENT_TCP_PORT,
+ .app_socket_timeout = DEFAULT_APP_SOCKET_RW_TIMEOUT,
+
+ .no_kernel = false,
+ .background = false,
+ .daemonize = false,
+ .sig_parent = false,
+
+ .tracing_group_name.value = DEFAULT_TRACING_GROUP,
+ .kmod_probes_list.value = NULL,
+ .kmod_extra_probes_list.value = NULL,
+
+ .rundir.value = NULL,
+
+ .apps_unix_sock_path.value = NULL,
+ .client_unix_sock_path.value = NULL,
+ .wait_shm_path.value = NULL,
+ .health_unix_sock_path.value = NULL,
+ .lttng_ust_clock_plugin.value = NULL,
+ .pid_file_path.value = NULL,
+ .lock_file_path.value = NULL,
+ .agent_port_file_path.value = NULL,
+ .load_session_path.value = NULL,
+
+ .consumerd32_path.value = NULL,
+ .consumerd32_bin_path.value = NULL,
+ .consumerd32_lib_dir.value = NULL,
+ .consumerd32_err_unix_sock_path.value = NULL,
+ .consumerd32_cmd_unix_sock_path.value = NULL,
+
+ .consumerd64_path.value = NULL,
+ .consumerd64_bin_path.value = NULL,
+ .consumerd64_lib_dir.value = NULL,
+ .consumerd64_err_unix_sock_path.value = NULL,
+ .consumerd64_cmd_unix_sock_path.value = NULL,
+
+ .kconsumerd_path.value = NULL,
+ .kconsumerd_err_unix_sock_path.value = NULL,
+ .kconsumerd_cmd_unix_sock_path.value = NULL,
+};
+
+static
+void config_string_fini(struct config_string *str)
+{
+ config_string_set(str, NULL);
+}
+
+static
+void config_string_set_static(struct config_string *config_str,
+ const char *value)
+{
+ config_string_set(config_str, (char *) value);
+ config_str->should_free = false;
+}
+
+/* Only use for dynamically-allocated strings. */
+LTTNG_HIDDEN
+void config_string_set(struct config_string *config_str, char *value)
+{
+ assert(config_str);
+ if (config_str->should_free) {
+ free(config_str->value);
+ config_str->should_free = false;
+ }
+
+ config_str->should_free = !!value;
+ config_str->value = value;
+}
+
+LTTNG_HIDDEN
+int sessiond_config_apply_env_config(struct sessiond_config *config)
+{
+ int ret = 0;
+ const char *env_value;
+
+ env_value = getenv(DEFAULT_APP_SOCKET_TIMEOUT_ENV);
+ if (env_value) {
+ char *endptr;
+ long int_val;
+
+ errno = 0;
+ int_val = strtoul(env_value, &endptr, 0);
+ if (errno != 0 || int_val > INT_MAX ||
+ (int_val < 0 && int_val != -1)) {
+ ERR("Invalid value \"%s\" used for \"%s\" environment variable",
+ env_value, DEFAULT_APP_SOCKET_TIMEOUT_ENV);
+ ret = -1;
+ goto end;
+ }
+
+ config->app_socket_timeout = int_val;
+ }
+
+ env_value = lttng_secure_getenv("LTTNG_CONSUMERD32_BIN");
+ if (env_value) {
+ config_string_set_static(&config->consumerd32_bin_path,
+ env_value);
+ }
+ env_value = lttng_secure_getenv("LTTNG_CONSUMERD64_BIN");
+ if (env_value) {
+ config_string_set_static(&config->consumerd64_bin_path,
+ env_value);
+ }
+
+ env_value = lttng_secure_getenv("LTTNG_CONSUMERD32_LIBDIR");
+ if (env_value) {
+ config_string_set_static(&config->consumerd32_lib_dir,
+ env_value);
+ }
+ env_value = lttng_secure_getenv("LTTNG_CONSUMERD64_LIBDIR");
+ if (env_value) {
+ config_string_set_static(&config->consumerd64_lib_dir,
+ env_value);
+ }
+
+ env_value = lttng_secure_getenv("LTTNG_UST_CLOCK_PLUGIN");
+ if (env_value) {
+ config_string_set_static(&config->lttng_ust_clock_plugin,
+ env_value);
+ }
+
+ env_value = lttng_secure_getenv(DEFAULT_LTTNG_KMOD_PROBES);
+ if (env_value) {
+ config_string_set_static(&config->kmod_probes_list,
+ env_value);
+ }
+
+ env_value = lttng_secure_getenv(DEFAULT_LTTNG_EXTRA_KMOD_PROBES);
+ if (env_value) {
+ config_string_set_static(&config->kmod_extra_probes_list,
+ env_value);
+ }
+end:
+ return ret;
+}
+
+static
+int config_set_paths_root(struct sessiond_config *config)
+{
+ int ret = 0;
+
+ config_string_set(&config->rundir, strdup(DEFAULT_LTTNG_RUNDIR));
+ if (!config->rundir.value) {
+ ERR("Failed to set rundir");
+ ret = -1;
+ goto end;
+ }
+
+ config_string_set_static(&config->apps_unix_sock_path,
+ DEFAULT_GLOBAL_APPS_UNIX_SOCK);
+ config_string_set_static(&config->client_unix_sock_path,
+ DEFAULT_GLOBAL_CLIENT_UNIX_SOCK);
+ config_string_set_static(&config->wait_shm_path,
+ DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH);
+ config_string_set_static(&config->health_unix_sock_path,
+ DEFAULT_GLOBAL_HEALTH_UNIX_SOCK);
+ config_string_set_static(&config->kconsumerd_err_unix_sock_path,
+ DEFAULT_KCONSUMERD_ERR_SOCK_PATH);
+ config_string_set_static(&config->kconsumerd_cmd_unix_sock_path,
+ DEFAULT_KCONSUMERD_CMD_SOCK_PATH);
+end:
+ return ret;
+}
+
+static
+int config_set_paths_non_root(struct sessiond_config *config)
+{
+ int ret = 0;
+ const char *home_path = utils_get_home_dir();
+ char *str;
+
+ if (home_path == NULL) {
+ ERR("Can't get HOME directory for sockets creation.");
+ ret = -1;
+ goto end;
+ }
+
+ /*
+ * Create rundir from home path. This will create something like
+ * $HOME/.lttng
+ */
+ ret = asprintf(&str, DEFAULT_LTTNG_HOME_RUNDIR, home_path);
+ if (ret < 0) {
+ ERR("Failed to set rundir");
+ goto end;
+ }
+ config_string_set(&config->rundir, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_HOME_APPS_UNIX_SOCK, home_path);
+ if (ret < 0) {
+ ERR("Failed to set default home apps unix socket path");
+ goto end;
+ }
+ config_string_set(&config->apps_unix_sock_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_HOME_CLIENT_UNIX_SOCK, home_path);
+ if (ret < 0) {
+ ERR("Failed to set default home client unix socket path");
+ goto end;
+ }
+ config_string_set(&config->client_unix_sock_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_HOME_APPS_WAIT_SHM_PATH, getuid());
+ if (ret < 0) {
+ ERR("Failed to set default home apps wait shm path");
+ goto end;
+ }
+ config_string_set(&config->wait_shm_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_HOME_HEALTH_UNIX_SOCK, home_path);
+ if (ret < 0) {
+ ERR("Failed to set default home health UNIX socket path");
+ goto end;
+ }
+ config_string_set(&config->health_unix_sock_path, str);
+ str = NULL;
+
+ ret = 0;
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int sessiond_config_init(struct sessiond_config *config)
+{
+ int ret;
+ bool is_root = (getuid() == 0);
+ char *str;
+
+ assert(config);
+ memcpy(config, &sessiond_config_build_defaults, sizeof(*config));
+
+ if (is_root) {
+ ret = config_set_paths_root(config);
+ } else {
+ ret = config_set_paths_non_root(config);
+ }
+
+ /* 32 bits consumerd path setup */
+ ret = asprintf(&str, DEFAULT_USTCONSUMERD32_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set 32-bit consumer path");
+ goto end;
+ }
+ config_string_set(&config->consumerd32_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_USTCONSUMERD32_ERR_SOCK_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set 32-bit consumer error socket path");
+ goto end;
+ }
+ config_string_set(&config->consumerd32_err_unix_sock_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_USTCONSUMERD32_CMD_SOCK_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set 32-bit consumer command socket path");
+ goto end;
+ }
+ config_string_set(&config->consumerd32_cmd_unix_sock_path, str);
+ str = NULL;
+
+ /* 64 bits consumerd path setup */
+ ret = asprintf(&str, DEFAULT_USTCONSUMERD64_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set 64-bit consumer path");
+ goto end;
+ }
+ config_string_set(&config->consumerd64_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_USTCONSUMERD64_ERR_SOCK_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set 64-bit consumer error socket path");
+ goto end;
+ }
+ config_string_set(&config->consumerd64_err_unix_sock_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, DEFAULT_USTCONSUMERD64_CMD_SOCK_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set 64-bit consumer command socket path");
+ goto end;
+ }
+ config_string_set(&config->consumerd64_cmd_unix_sock_path, str);
+ str = NULL;
+
+ /* kconsumerd consumerd path setup */
+ ret = asprintf(&str, DEFAULT_KCONSUMERD_PATH,
+ config->rundir.value);
+ if (ret < 0) {
+ ERR("Failed to set kernel consumer path");
+ goto end;
+ }
+ config_string_set(&config->kconsumerd_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, "%s/%s", config->rundir.value,
+ DEFAULT_LTTNG_SESSIOND_PIDFILE);
+ if (ret < 0) {
+ ERR("Failed to set PID file path");
+ goto end;
+ }
+ config_string_set(&config->pid_file_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, "%s/%s", config->rundir.value,
+ DEFAULT_LTTNG_SESSIOND_LOCKFILE);
+ if (ret < 0) {
+ ERR("Failed to set lock file path");
+ goto end;
+ }
+ config_string_set(&config->lock_file_path, str);
+ str = NULL;
+
+ ret = asprintf(&str, "%s/%s", config->rundir.value,
+ DEFAULT_LTTNG_SESSIOND_AGENTPORT_FILE);
+ if (ret < 0) {
+ ERR("Failed to set agent port file path");
+ goto end;
+ }
+ config_string_set(&config->agent_port_file_path, str);
+ str = NULL;
+
+ /*
+ * Allow INSTALL_BIN_PATH to be used as a target path for the
+ * native architecture size consumer if CONFIG_CONSUMER*_PATH
+ * has not been defined.
+ */
+#if (CAA_BITS_PER_LONG == 32)
+ config_string_set_static(&config->consumerd32_bin_path,
+ INSTALL_BIN_PATH "/" DEFAULT_CONSUMERD_FILE);
+ config_string_set_static(&config->consumerd32_lib_dir,
+ INSTALL_LIB_PATH);
+#elif (CAA_BITS_PER_LONG == 64)
+ config_string_set_static(&config->consumerd64_bin_path,
+ INSTALL_BIN_PATH "/" DEFAULT_CONSUMERD_FILE);
+ config_string_set_static(&config->consumerd64_lib_dir,
+ INSTALL_LIB_PATH);
+#else
+#error "Unknown bitness"
+#endif
+ ret = 0;
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+void sessiond_config_fini(struct sessiond_config *config)
+{
+ config_string_fini(&config->tracing_group_name);
+ config_string_fini(&config->kmod_probes_list);
+ config_string_fini(&config->kmod_extra_probes_list);
+ config_string_fini(&config->apps_unix_sock_path);
+ config_string_fini(&config->client_unix_sock_path);
+ config_string_fini(&config->wait_shm_path);
+ config_string_fini(&config->health_unix_sock_path);
+ config_string_fini(&config->lttng_ust_clock_plugin);
+ config_string_fini(&config->pid_file_path);
+ config_string_fini(&config->lock_file_path);
+ config_string_fini(&config->load_session_path);
+ config_string_fini(&config->agent_port_file_path);
+ config_string_fini(&config->consumerd32_path);
+ config_string_fini(&config->consumerd32_bin_path);
+ config_string_fini(&config->consumerd32_lib_dir);
+ config_string_fini(&config->consumerd32_err_unix_sock_path);
+ config_string_fini(&config->consumerd32_cmd_unix_sock_path);
+ config_string_fini(&config->consumerd64_path);
+ config_string_fini(&config->consumerd64_bin_path);
+ config_string_fini(&config->consumerd64_lib_dir);
+ config_string_fini(&config->consumerd64_err_unix_sock_path);
+ config_string_fini(&config->consumerd64_cmd_unix_sock_path);
+ config_string_fini(&config->kconsumerd_path);
+ config_string_fini(&config->kconsumerd_err_unix_sock_path);
+ config_string_fini(&config->kconsumerd_cmd_unix_sock_path);
+}
+
+static
+int resolve_path(struct config_string *path)
+{
+ int ret = 0;
+ char *absolute_path;
+
+ if (!path->value || path->value[0] == '/') {
+ goto end;
+ }
+
+ absolute_path = utils_expand_path(path->value);
+ if (!absolute_path) {
+ ret = -1;
+ goto end;
+ }
+
+ config_string_set(path, absolute_path);
+end:
+ return ret;
+}
+
+#define RESOLVE_CHECK(path_config_str) \
+ if (resolve_path(path_config_str)) \
+ return -1
+
+LTTNG_HIDDEN
+int sessiond_config_resolve_paths(struct sessiond_config *config)
+{
+ RESOLVE_CHECK(&config->apps_unix_sock_path);
+ RESOLVE_CHECK(&config->client_unix_sock_path);
+ RESOLVE_CHECK(&config->wait_shm_path);
+ RESOLVE_CHECK(&config->health_unix_sock_path);
+ RESOLVE_CHECK(&config->lttng_ust_clock_plugin);
+ RESOLVE_CHECK(&config->pid_file_path);
+ RESOLVE_CHECK(&config->lock_file_path);
+ RESOLVE_CHECK(&config->load_session_path);
+ RESOLVE_CHECK(&config->agent_port_file_path);
+ RESOLVE_CHECK(&config->consumerd32_path);
+ RESOLVE_CHECK(&config->consumerd32_bin_path);
+ RESOLVE_CHECK(&config->consumerd32_lib_dir);
+ RESOLVE_CHECK(&config->consumerd32_err_unix_sock_path);
+ RESOLVE_CHECK(&config->consumerd32_cmd_unix_sock_path);
+ RESOLVE_CHECK(&config->consumerd64_path);
+ RESOLVE_CHECK(&config->consumerd64_bin_path);
+ RESOLVE_CHECK(&config->consumerd64_lib_dir);
+ RESOLVE_CHECK(&config->consumerd64_err_unix_sock_path);
+ RESOLVE_CHECK(&config->consumerd64_cmd_unix_sock_path);
+ RESOLVE_CHECK(&config->kconsumerd_path);
+ RESOLVE_CHECK(&config->kconsumerd_err_unix_sock_path);
+ RESOLVE_CHECK(&config->kconsumerd_cmd_unix_sock_path);
+ return 0;
+}
+
+LTTNG_HIDDEN
+void sessiond_config_log(struct sessiond_config *config)
+{
+ DBG_NO_LOC("[sessiond configuration]");
+ DBG_NO_LOC("\tverbose: %i", config->verbose);
+ DBG_NO_LOC("\tverbose consumer: %i", config->verbose_consumer);
+ DBG_NO_LOC("\tquiet mode: %s", config->quiet ? "True" : "False");
+ DBG_NO_LOC("\tagent_tcp_port: %i", config->agent_tcp_port);
+ DBG_NO_LOC("\tapplication socket timeout: %i", config->app_socket_timeout);
+ DBG_NO_LOC("\tno-kernel: %s", config->no_kernel ? "True" : "False");
+ DBG_NO_LOC("\tbackground: %s", config->background ? "True" : "False");
+ DBG_NO_LOC("\tdaemonize: %s", config->daemonize ? "True" : "False");
+ DBG_NO_LOC("\tsignal parent on start: %s", config->sig_parent ? "True" : "False");
+ DBG_NO_LOC("\ttracing group name: %s", config->tracing_group_name.value ? : "Unknown");
+ DBG_NO_LOC("\tkmod_probe_list: %s", config->kmod_probes_list.value ? : "None");
+ DBG_NO_LOC("\tkmod_extra_probe_list: %s", config->kmod_extra_probes_list.value ? : "None");
+ DBG_NO_LOC("\trundir: %s", config->rundir.value ? : "Unknown");
+ DBG_NO_LOC("\tapplication socket path: %s", config->apps_unix_sock_path.value ? : "Unknown");
+ DBG_NO_LOC("\tclient socket path: %s", config->client_unix_sock_path.value ? : "Unknown");
+ DBG_NO_LOC("\twait shm path: %s", config->wait_shm_path.value ? : "Unknown");
+ DBG_NO_LOC("\thealth socket path: %s", config->health_unix_sock_path.value ? : "Unknown");
+ DBG_NO_LOC("\tLTTNG_UST_CLOCK_PLUGIN: %s", config->lttng_ust_clock_plugin.value ? : "None");
+ DBG_NO_LOC("\tpid file path: %s", config->pid_file_path.value ? : "Unknown");
+ DBG_NO_LOC("\tlock file path: %s", config->lock_file_path.value ? : "Unknown");
+ DBG_NO_LOC("\tsession load path: %s", config->load_session_path.value ? : "None");
+ DBG_NO_LOC("\tagent port file path: %s", config->agent_port_file_path.value ? : "Unknown");
+}
projects / lttng-tools.git / blobdiff