--- /dev/null
+/*
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <ctype.h>
+#include <popt.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <urcu/list.h>
+
+#include <common/dynamic-array.h>
+#include <common/mi-lttng.h>
+#include <common/optional.h>
+#include <common/dynamic-buffer.h>
+#include <common/tracker.h>
+
+#include <lttng/lttng.h>
+
+#include "../command.h"
+
+struct process_attr_command_args {
+ enum lttng_process_attr process_attr;
+ /* Present in the user's command. */
+ bool requested;
+ bool all;
+ struct lttng_dynamic_pointer_array string_args;
+};
+
+enum cmd_type {
+ CMD_TRACK,
+ CMD_UNTRACK,
+};
+
+/* Offset OPT_ values by one since libpopt gives '0' a special meaning. */
+enum {
+ OPT_PID = LTTNG_PROCESS_ATTR_PROCESS_ID + 1,
+ OPT_VPID = LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID + 1,
+ OPT_UID = LTTNG_PROCESS_ATTR_USER_ID + 1,
+ OPT_VUID = LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID + 1,
+ OPT_GID = LTTNG_PROCESS_ATTR_GROUP_ID + 1,
+ OPT_VGID = LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID + 1,
+ OPT_HELP,
+ OPT_LIST_OPTIONS,
+ OPT_SESSION,
+ OPT_ALL,
+};
+
+static char *opt_session_name;
+static int opt_kernel;
+static int opt_userspace;
+static char *opt_str_arg;
+
+static struct poptOption long_options[] = {
+ /* { longName, shortName, argInfo, argPtr, value, descrip, argDesc, } */
+ { "help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0, },
+ { "session", 's', POPT_ARG_STRING, &opt_session_name, OPT_SESSION, 0, 0, },
+ { "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0, },
+ { "userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0, },
+ { "pid", 'p', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_str_arg, OPT_PID, 0, 0, },
+ { "vpid", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_str_arg, OPT_VPID, 0, 0, },
+ { "uid", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_str_arg, OPT_UID, 0, 0, },
+ { "vuid", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_str_arg, OPT_VUID, 0, 0, },
+ { "gid", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_str_arg, OPT_GID, 0, 0, },
+ { "vgid", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_str_arg, OPT_VGID, 0, 0, },
+ { "all", 'a', POPT_ARG_NONE, 0, OPT_ALL, 0, 0, },
+ { "list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, 0, 0, },
+ { 0, 0, 0, 0, 0, 0, 0, },
+};
+
+static struct process_attr_command_args
+ process_attr_commands[LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID + 1];
+
+static void process_attr_command_init(struct process_attr_command_args *cmd,
+ enum lttng_process_attr process_attr)
+{
+ cmd->process_attr = process_attr;
+ cmd->all = false;
+ lttng_dynamic_pointer_array_init(&cmd->string_args, NULL);
+}
+
+static void process_attr_command_fini(struct process_attr_command_args *cmd)
+{
+ lttng_dynamic_pointer_array_reset(&cmd->string_args);
+}
+
+static const char *get_capitalized_process_attr_str(enum lttng_process_attr process_attr)
+{
+ switch (process_attr) {
+ case LTTNG_PROCESS_ATTR_PROCESS_ID:
+ return "Process ID";
+ case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
+ return "Virtual process ID";
+ case LTTNG_PROCESS_ATTR_USER_ID:
+ return "User ID";
+ case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
+ return "Virtual user ID";
+ case LTTNG_PROCESS_ATTR_GROUP_ID:
+ return "Group ID";
+ case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
+ return "Virtual group ID";
+ default:
+ return "Unknown";
+ }
+ return NULL;
+}
+
+static bool ust_process_attr_supported(enum lttng_process_attr *process_attr)
+{
+ bool supported;
+
+ switch (*process_attr) {
+ case LTTNG_PROCESS_ATTR_PROCESS_ID:
+ *process_attr = LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID;
+ /* fall-through. */
+ case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
+ case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
+ case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
+ supported = true;
+ break;
+ default:
+ ERR("The %s process attribute cannot be tracked in the user space domain.",
+ lttng_process_attr_to_string(*process_attr));
+ supported = false;
+ break;
+ }
+ return supported;
+}
+
+static const char *get_mi_element_command(enum cmd_type cmd_type)
+{
+ switch (cmd_type) {
+ case CMD_TRACK:
+ return mi_lttng_element_command_track;
+ case CMD_UNTRACK:
+ return mi_lttng_element_command_untrack;
+ default:
+ abort();
+ }
+}
+
+static enum cmd_error_code run_command_all(enum cmd_type cmd_type,
+ const char *session_name,
+ enum lttng_domain_type domain_type,
+ enum lttng_process_attr process_attr,
+ struct mi_writer *writer)
+{
+ struct lttng_process_attr_tracker_handle *tracker_handle = NULL;
+ const enum lttng_error_code handle_ret_code =
+ lttng_session_get_tracker_handle(session_name,
+ domain_type, process_attr,
+ &tracker_handle);
+ enum cmd_error_code cmd_ret = CMD_SUCCESS;
+ enum lttng_process_attr_tracker_handle_status status;
+
+ if (writer) {
+ const int ret = mi_lttng_all_process_attribute_value(
+ writer, process_attr, true);
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+ }
+
+ if (handle_ret_code != LTTNG_OK) {
+ ERR("Session `%s` does not exist", session_name);
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+
+ status = lttng_process_attr_tracker_handle_set_tracking_policy(
+ tracker_handle,
+ cmd_type == CMD_TRACK ?
+ LTTNG_TRACKING_POLICY_INCLUDE_ALL :
+ LTTNG_TRACKING_POLICY_EXCLUDE_ALL);
+ switch (status) {
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK:
+ if (cmd_type == CMD_TRACK) {
+ MSG("%s tracking policy set to `include all`",
+ get_capitalized_process_attr_str(process_attr));
+ } else {
+ MSG("%s tracking policy set to `exclude all`",
+ get_capitalized_process_attr_str(process_attr));
+ }
+ break;
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_SESSION_DOES_NOT_EXIST:
+ ERR("%s", lttng_strerror(-LTTNG_ERR_SESS_NOT_FOUND));
+ break;
+ default:
+ ERR("Unknown error encountered while setting tracking policy of %s tracker to `%s`",
+ lttng_process_attr_to_string(process_attr),
+ cmd_type == CMD_TRACK ? "include all" :
+ "exclude all");
+ cmd_ret = CMD_FATAL;
+ break;
+ }
+end:
+ if (writer) {
+ int ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_success,
+ cmd_ret == CMD_SUCCESS);
+
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ } else {
+ ret = mi_lttng_writer_close_element(writer);
+ cmd_ret = ret == 0 ? cmd_ret : CMD_FATAL;
+ }
+ }
+ lttng_process_attr_tracker_handle_destroy(tracker_handle);
+ return cmd_ret;
+}
+
+static enum cmd_error_code run_command_string(enum cmd_type cmd_type,
+ const char *session_name,
+ enum lttng_domain_type domain_type,
+ enum lttng_process_attr process_attr,
+ const char *_args,
+ struct mi_writer *writer)
+{
+ struct lttng_process_attr_tracker_handle *tracker_handle;
+ const enum lttng_error_code handle_ret_code =
+ lttng_session_get_tracker_handle(session_name,
+ domain_type, process_attr,
+ &tracker_handle);
+ enum cmd_error_code cmd_ret = CMD_SUCCESS;
+ const char *one_value_str;
+ char *args = strdup(_args);
+ char *iter = args;
+ bool policy_set = false;
+
+ if (!args) {
+ ERR("%s", lttng_strerror(-LTTNG_ERR_NOMEM));
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+
+ if (handle_ret_code != LTTNG_OK) {
+ ERR("%s", lttng_strerror(-handle_ret_code));
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+
+ while ((one_value_str = strtok_r(iter, ",", &iter)) != NULL) {
+ const bool is_numerical_argument = isdigit(one_value_str[0]);
+ enum lttng_process_attr_tracker_handle_status status;
+ enum lttng_tracking_policy policy;
+ int ret;
+ char *prettified_arg;
+
+ if (!policy_set) {
+ status = lttng_process_attr_tracker_handle_get_tracking_policy(
+ tracker_handle, &policy);
+ if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) {
+ break;
+ }
+
+ if (policy != LTTNG_TRACKING_POLICY_INCLUDE_SET) {
+ status = lttng_process_attr_tracker_handle_set_tracking_policy(
+ tracker_handle,
+ LTTNG_TRACKING_POLICY_INCLUDE_SET);
+ if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) {
+ break;
+ }
+ }
+ policy_set = true;
+ }
+
+ if (is_numerical_argument) {
+ const unsigned long one_value_int =
+ strtoul(one_value_str, NULL, 10);
+
+ if (writer) {
+ ret = mi_lttng_integral_process_attribute_value(
+ writer, process_attr,
+ (int64_t) one_value_int, true);
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+ }
+
+ switch (process_attr) {
+ case LTTNG_PROCESS_ATTR_PROCESS_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_process_id_tracker_handle_add_pid(
+ tracker_handle,
+ (pid_t) one_value_int) :
+ lttng_process_attr_process_id_tracker_handle_remove_pid(
+ tracker_handle,
+ (pid_t) one_value_int);
+ break;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_virtual_process_id_tracker_handle_add_pid(
+ tracker_handle,
+ (pid_t) one_value_int) :
+ lttng_process_attr_virtual_process_id_tracker_handle_remove_pid(
+ tracker_handle,
+ (pid_t) one_value_int);
+ break;
+ case LTTNG_PROCESS_ATTR_USER_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_user_id_tracker_handle_add_uid(
+ tracker_handle,
+ (uid_t) one_value_int) :
+ lttng_process_attr_user_id_tracker_handle_remove_uid(
+ tracker_handle,
+ (uid_t) one_value_int);
+ break;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_virtual_user_id_tracker_handle_add_uid(
+ tracker_handle,
+ (uid_t) one_value_int) :
+ lttng_process_attr_virtual_user_id_tracker_handle_remove_uid(
+ tracker_handle,
+ (uid_t) one_value_int);
+ break;
+ case LTTNG_PROCESS_ATTR_GROUP_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_group_id_tracker_handle_add_gid(
+ tracker_handle,
+ (gid_t) one_value_int) :
+ lttng_process_attr_group_id_tracker_handle_remove_gid(
+ tracker_handle,
+ (gid_t) one_value_int);
+ break;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_virtual_group_id_tracker_handle_add_gid(
+ tracker_handle,
+ (gid_t) one_value_int) :
+ lttng_process_attr_virtual_group_id_tracker_handle_remove_gid(
+ tracker_handle,
+ (gid_t) one_value_int);
+ break;
+ default:
+ abort();
+ }
+
+ } else {
+ if (writer) {
+ ret = mi_lttng_string_process_attribute_value(
+ writer, process_attr,
+ one_value_str, true);
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+ }
+
+ switch (process_attr) {
+ case LTTNG_PROCESS_ATTR_USER_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_user_id_tracker_handle_add_user_name(
+ tracker_handle,
+ one_value_str) :
+ lttng_process_attr_user_id_tracker_handle_remove_user_name(
+ tracker_handle,
+ one_value_str);
+ break;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_virtual_user_id_tracker_handle_add_user_name(
+ tracker_handle,
+ one_value_str) :
+ lttng_process_attr_virtual_user_id_tracker_handle_remove_user_name(
+ tracker_handle,
+ one_value_str);
+ break;
+ case LTTNG_PROCESS_ATTR_GROUP_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_group_id_tracker_handle_add_group_name(
+ tracker_handle,
+ one_value_str) :
+ lttng_process_attr_group_id_tracker_handle_remove_group_name(
+ tracker_handle,
+ one_value_str);
+ break;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
+ status = cmd_type == CMD_TRACK ?
+ lttng_process_attr_virtual_group_id_tracker_handle_add_group_name(
+ tracker_handle,
+ one_value_str) :
+ lttng_process_attr_virtual_group_id_tracker_handle_remove_group_name(
+ tracker_handle,
+ one_value_str);
+ break;
+ default:
+ ERR("%s is not a valid %s value; expected an integer",
+ one_value_str,
+ lttng_process_attr_to_string(
+ process_attr));
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+ }
+
+ ret = asprintf(&prettified_arg,
+ is_numerical_argument ? "%s" : "`%s`",
+ one_value_str);
+ if (ret < 0) {
+ PERROR("Failed to format argument `%s`", one_value_str);
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+
+ switch (status) {
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK:
+ if (cmd_type == CMD_TRACK) {
+ MSG("Added %s to the %s tracker inclusion set",
+ one_value_str,
+ lttng_process_attr_to_string(
+ process_attr));
+ } else {
+ MSG("Removed %s from the %s tracker inclusion set",
+ one_value_str,
+ lttng_process_attr_to_string(
+ process_attr));
+ }
+ break;
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_SESSION_DOES_NOT_EXIST:
+ ERR("Session `%s` not found", session_name);
+ break;
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS:
+ WARN("%s is already in the %s inclusion set",
+ prettified_arg,
+ lttng_process_attr_to_string(
+ process_attr));
+ break;
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING:
+ WARN("%s is not in the %s the inclusion set",
+ prettified_arg,
+ lttng_process_attr_to_string(
+ process_attr));
+ break;
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_USER_NOT_FOUND:
+ ERR("User %s was not found", prettified_arg);
+ cmd_ret = CMD_ERROR;
+ break;
+ case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_GROUP_NOT_FOUND:
+ ERR("Group %s was not found", prettified_arg);
+ cmd_ret = CMD_ERROR;
+ break;
+ default:
+ ERR("Unknown error encountered while %s %s %s %s tracker's inclusion set",
+ cmd_type == CMD_TRACK ? "adding" :
+ "removing",
+ lttng_process_attr_to_string(
+ process_attr),
+ prettified_arg,
+ cmd_type == CMD_TRACK ? "to" : "from");
+ cmd_ret = CMD_FATAL;
+ break;
+ }
+ free(prettified_arg);
+
+ if (writer) {
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_success,
+ cmd_ret == CMD_SUCCESS);
+
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ } else {
+ ret = mi_lttng_writer_close_element(writer);
+ cmd_ret = ret == 0 ? cmd_ret : CMD_FATAL;
+ }
+ }
+ }
+end:
+ free(args);
+ lttng_process_attr_tracker_handle_destroy(tracker_handle);
+ return cmd_ret;
+}
+
+static enum cmd_error_code run_command(enum cmd_type cmd_type,
+ const char *session_name,
+ const struct process_attr_command_args *command_args,
+ struct mi_writer *writer)
+{
+ const enum lttng_domain_type domain_type =
+ opt_kernel ? LTTNG_DOMAIN_KERNEL : LTTNG_DOMAIN_UST;
+ enum cmd_error_code cmd_ret = CMD_SUCCESS;
+ unsigned int i;
+ const unsigned int string_arg_count =
+ lttng_dynamic_pointer_array_get_count(
+ &command_args->string_args);
+ enum lttng_process_attr process_attr = command_args->process_attr;
+
+ if (opt_userspace) {
+ /*
+ * Check that this process attribute can be tracked
+ * in the user space domain. Backward-compatibility
+ * changes are be applied to process_attr as needed.
+ */
+ if (!ust_process_attr_supported(&process_attr)) {
+ cmd_ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+ if (writer) {
+ /* Open tracker and trackers elements */
+ const int ret = mi_lttng_process_attribute_tracker_open(
+ writer, process_attr);
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+ }
+
+ if (command_args->all) {
+ cmd_ret = run_command_all(cmd_type, session_name, domain_type,
+ process_attr, writer);
+ } else {
+ bool error_occurred = false;
+
+ for (i = 0; i < string_arg_count; i++) {
+ const char *arg = (const char *) lttng_dynamic_pointer_array_get_pointer(
+ &command_args->string_args, i);
+
+ cmd_ret = run_command_string(cmd_type, session_name,
+ domain_type, process_attr, arg, writer);
+ if (cmd_ret != CMD_SUCCESS) {
+ error_occurred = true;
+ if (cmd_ret == CMD_FATAL) {
+ break;
+ }
+ goto end;
+ }
+ }
+ if (error_occurred) {
+ cmd_ret = CMD_ERROR;
+ }
+ }
+
+ if (writer) {
+ /* Close tracker and trackers elements */
+ const int ret = mi_lttng_close_multi_element(
+ writer, 2);
+ if (ret) {
+ cmd_ret = CMD_FATAL;
+ goto end;
+ }
+ }
+end:
+ return cmd_ret;
+}
+
+/*
+ * Add/remove tracker to/from session.
+ */
+static int cmd_track_untrack(enum cmd_type cmd_type,
+ int argc,
+ const char **argv,
+ const char *help_msg)
+{
+ int opt, ret = 0;
+ bool sub_command_failed = false;
+ bool opt_all = false;
+ unsigned int selected_process_attr_tracker_count = 0;
+ const unsigned int command_count =
+ sizeof(process_attr_commands) /
+ sizeof(struct process_attr_command_args);
+ enum cmd_error_code command_ret = CMD_SUCCESS;
+ static poptContext pc;
+ char *session_name = NULL;
+ const char *leftover = NULL;
+ struct mi_writer *writer = NULL;
+ size_t i;
+
+ for (i = 0; i < command_count; i++) {
+ process_attr_command_init(&process_attr_commands[i], (lttng_process_attr) i);
+ }
+
+ if (argc < 1) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ pc = poptGetContext(NULL, argc, argv, long_options, 0);
+ poptReadDefaultConfig(pc, 0);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ case OPT_HELP:
+ SHOW_HELP();
+ goto end;
+ case OPT_LIST_OPTIONS:
+ list_cmd_options(stdout, long_options);
+ goto end;
+ case OPT_SESSION:
+ break;
+ case OPT_PID:
+ case OPT_VPID:
+ case OPT_UID:
+ case OPT_VUID:
+ case OPT_GID:
+ case OPT_VGID:
+ /* See OPT_ enum declaration comment. */
+ opt--;
+ selected_process_attr_tracker_count++;
+ process_attr_commands[opt].requested = true;
+ if (!opt_str_arg) {
+ continue;
+ }
+ ret = lttng_dynamic_pointer_array_add_pointer(
+ &process_attr_commands[opt].string_args,
+ opt_str_arg);
+ if (ret) {
+ ERR("Allocation failed while parsing command arguments");
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ break;
+ case OPT_ALL:
+ opt_all = true;
+ break;
+ default:
+ command_ret = CMD_UNDEFINED;
+ goto end;
+ }
+ }
+
+ ret = print_missing_or_multiple_domains(
+ opt_kernel + opt_userspace, false);
+ if (ret) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ if (selected_process_attr_tracker_count == 0) {
+ ERR("At least one process attribute must be specified");
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ if (opt_all) {
+ /*
+ * Only one process attribute tracker was specified; find it
+ * and set it in 'all' mode.
+ */
+ for (i = 0; i < command_count; i++) {
+ if (!process_attr_commands[i].requested) {
+ continue;
+ }
+ process_attr_commands[i].all = true;
+ if (lttng_dynamic_pointer_array_get_count(
+ &process_attr_commands[i]
+ .string_args)) {
+ ERR("The --all option cannot be used with a list of process attribute values");
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ }
+ } else {
+ for (i = 0; i < command_count; i++) {
+ if (!process_attr_commands[i].requested) {
+ continue;
+ }
+ if (lttng_dynamic_pointer_array_get_count(
+ &process_attr_commands[i]
+ .string_args) == 0) {
+ ERR("No process attribute value specified for %s tracker",
+ get_capitalized_process_attr_str(
+ process_attr_commands[i]
+ .process_attr));
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ }
+ }
+
+ if (!opt_session_name) {
+ session_name = get_session_name();
+ if (session_name == NULL) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ } else {
+ session_name = opt_session_name;
+ }
+
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Mi check */
+ if (lttng_opt_mi) {
+ writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
+ if (!writer) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+ if (writer) {
+ /* Open command element */
+ ret = mi_lttng_writer_command_open(writer,
+ get_mi_element_command(cmd_type));
+ if (ret) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Open output element */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_output);
+ if (ret) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ ret = mi_lttng_trackers_open(writer);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Execute sub-commands. */
+ for (i = 0; i < command_count; i++) {
+ if (!process_attr_commands[i].requested) {
+ continue;
+ }
+ command_ret = run_command(cmd_type, session_name,
+ &process_attr_commands[i], writer);
+ if (command_ret != CMD_SUCCESS) {
+ sub_command_failed = true;
+ if (command_ret == CMD_FATAL) {
+ break;
+ }
+ }
+ }
+
+ /* Mi closing */
+ if (writer) {
+ /* Close trackers and output elements */
+ ret = mi_lttng_close_multi_element(writer, 2);
+ if (ret) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Success ? */
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_command_success,
+ !sub_command_failed);
+ if (ret) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Command element close */
+ ret = mi_lttng_writer_command_close(writer);
+ if (ret) {
+ command_ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+end:
+ if (!opt_session_name) {
+ free(session_name);
+ }
+
+ /* Mi clean-up */
+ if (writer && mi_lttng_writer_destroy(writer)) {
+ /* Preserve original error code */
+ command_ret = CMD_ERROR;
+ }
+
+ for (i = 0; i < command_count; i++) {
+ process_attr_command_fini(&process_attr_commands[i]);
+ }
+
+ poptFreeContext(pc);
+ return (int) command_ret;
+}
+
+int cmd_track(int argc, const char **argv)
+{
+ static const char *help_msg =
+#ifdef LTTNG_EMBED_HELP
+#include <lttng-track.1.h>
+#else
+ NULL
+#endif
+ ;
+
+ return cmd_track_untrack(CMD_TRACK, argc, argv, help_msg);
+}
+
+int cmd_untrack(int argc, const char **argv)
+{
+ static const char *help_msg =
+#ifdef LTTNG_EMBED_HELP
+#include <lttng-untrack.1.h>
+#else
+ NULL
+#endif
+ ;
+
+ return cmd_track_untrack(CMD_UNTRACK, argc, argv, help_msg);
+}
projects / lttng-tools.git / blobdiff