X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fdestroy.c;fp=src%2Fbin%2Flttng%2Fcommands%2Fdestroy.c;h=0000000000000000000000000000000000000000;hp=78bbbaaad37e25a6e94648236860fe11a60252db;hb=48a4000561343808724f7cb5fa8c131877489ccd;hpb=81663f073dbfb4b61c06a0ceb8ca33c4fc41b1c5 diff --git a/src/bin/lttng/commands/destroy.c b/src/bin/lttng/commands/destroy.c deleted file mode 100644 index 78bbbaaad..000000000 --- a/src/bin/lttng/commands/destroy.c +++ /dev/null @@ -1,433 +0,0 @@ -/* - * Copyright (C) 2011 David Goulet - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#define _LGPL_SOURCE -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "../command.h" - -#include -#include -#include - -static char *opt_session_name; -static int opt_destroy_all; -static int opt_no_wait; - -#ifdef LTTNG_EMBED_HELP -static const char help_msg[] = -#include -; -#endif - -/* Mi writer */ -static struct mi_writer *writer; - -enum { - OPT_HELP = 1, - OPT_LIST_OPTIONS, -}; - -static struct poptOption long_options[] = { - /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ - {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, - {"all", 'a', POPT_ARG_VAL, &opt_destroy_all, 1, 0, 0}, - {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, - {"no-wait", 'n', POPT_ARG_VAL, &opt_no_wait, 1, 0, 0}, - {0, 0, 0, 0, 0, 0, 0} -}; - -/* - * destroy_session - * - * Unregister the provided session to the session daemon. On success, removes - * the default configuration. - */ -static int destroy_session(struct lttng_session *session) -{ - int ret; - char *session_name = NULL; - bool session_was_already_stopped; - enum lttng_error_code ret_code; - struct lttng_destruction_handle *handle = NULL; - enum lttng_destruction_handle_status status; - bool newline_needed = false, printed_destroy_msg = false; - enum lttng_rotation_state rotation_state; - char *stats_str = NULL; - - ret = lttng_stop_tracing_no_wait(session->name); - if (ret < 0 && ret != -LTTNG_ERR_TRACE_ALREADY_STOPPED) { - ERR("%s", lttng_strerror(ret)); - } - - session_was_already_stopped = ret == -LTTNG_ERR_TRACE_ALREADY_STOPPED; - if (!opt_no_wait) { - do { - ret = lttng_data_pending(session->name); - if (ret < 0) { - /* Return the data available call error. */ - goto error; - } - - /* - * Data sleep time before retrying (in usec). Don't - * sleep if the call returned value indicates - * availability. - */ - if (ret) { - if (!printed_destroy_msg) { - _MSG("Destroying session %s", - session->name); - newline_needed = true; - printed_destroy_msg = true; - fflush(stdout); - } - - usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME_US); - _MSG("."); - fflush(stdout); - } - } while (ret != 0); - } - - if (!session_was_already_stopped) { - /* - * Don't print the event and packet loss warnings since the user - * already saw them when stopping the trace. - */ - ret = get_session_stats_str(session->name, &stats_str); - if (ret < 0) { - goto error; - } - } - - ret_code = lttng_destroy_session_ext(session->name, &handle); - if (ret_code != LTTNG_OK) { - ret = -ret_code; - goto error; - } - - if (opt_no_wait) { - goto skip_wait_rotation; - } - - do { - status = lttng_destruction_handle_wait_for_completion( - handle, DEFAULT_DATA_AVAILABILITY_WAIT_TIME_US / - USEC_PER_MSEC); - switch (status) { - case LTTNG_DESTRUCTION_HANDLE_STATUS_TIMEOUT: - if (!printed_destroy_msg) { - _MSG("Destroying session %s", session->name); - newline_needed = true; - printed_destroy_msg = true; - } - _MSG("."); - fflush(stdout); - break; - case LTTNG_DESTRUCTION_HANDLE_STATUS_COMPLETED: - break; - default: - ERR("%sFailed to wait for the completion of the destruction of session \"%s\"", - newline_needed ? "\n" : "", - session->name); - newline_needed = false; - ret = -1; - goto error; - } - } while (status == LTTNG_DESTRUCTION_HANDLE_STATUS_TIMEOUT); - - status = lttng_destruction_handle_get_result(handle, &ret_code); - if (status != LTTNG_DESTRUCTION_HANDLE_STATUS_OK) { - ERR("%sFailed to get the result of session destruction", - newline_needed ? "\n" : ""); - ret = -1; - newline_needed = false; - goto error; - } - if (ret_code != LTTNG_OK) { - ret = -ret_code; - goto error; - } - - status = lttng_destruction_handle_get_rotation_state( - handle, &rotation_state); - if (status != LTTNG_DESTRUCTION_HANDLE_STATUS_OK) { - ERR("%sFailed to get rotation state from destruction handle", - newline_needed ? "\n" : ""); - newline_needed = false; - goto skip_wait_rotation; - } - - switch (rotation_state) { - case LTTNG_ROTATION_STATE_NO_ROTATION: - break; - case LTTNG_ROTATION_STATE_COMPLETED: - { - const struct lttng_trace_archive_location *location; - - status = lttng_destruction_handle_get_archive_location( - handle, &location); - if (status == LTTNG_DESTRUCTION_HANDLE_STATUS_OK) { - ret = print_trace_archive_location( - location, session->name); - if (ret) { - ERR("%sFailed to print the location of trace archive", - newline_needed ? "\n" : ""); - newline_needed = false; - goto skip_wait_rotation; - } - break; - } - /* fall-through. */ - } - default: - ERR("%sFailed to get the location of the rotation performed during the session's destruction", - newline_needed ? "\n" : ""); - newline_needed = false; - goto skip_wait_rotation; - } -skip_wait_rotation: - MSG("%sSession %s destroyed", newline_needed ? "\n" : "", - session->name); - newline_needed = false; - if (stats_str) { - MSG("%s", stats_str); - } - - session_name = get_session_name_quiet(); - if (session_name && !strncmp(session->name, session_name, NAME_MAX)) { - config_destroy_default(); - } - - if (lttng_opt_mi) { - ret = mi_lttng_session(writer, session, 0); - if (ret) { - ret = CMD_ERROR; - goto error; - } - } - - ret = CMD_SUCCESS; -error: - if (newline_needed) { - MSG(""); - } - lttng_destruction_handle_destroy(handle); - free(session_name); - free(stats_str); - return ret; -} - -/* - * destroy_all_sessions - * - * Call destroy_sessions for each registered sessions - */ -static int destroy_all_sessions(struct lttng_session *sessions, int count) -{ - int i; - bool error_occurred = false; - - LTTNG_ASSERT(count >= 0); - if (count == 0) { - MSG("No session found, nothing to do."); - } - - for (i = 0; i < count; i++) { - int ret = destroy_session(&sessions[i]); - - if (ret < 0) { - ERR("%s during the destruction of session \"%s\"", - lttng_strerror(ret), - sessions[i].name); - /* Continue to next session. */ - error_occurred = true; - } - } - - return error_occurred ? CMD_ERROR : CMD_SUCCESS; -} - -/* - * The 'destroy ' first level command - */ -int cmd_destroy(int argc, const char **argv) -{ - int opt; - int ret = CMD_SUCCESS , i, command_ret = CMD_SUCCESS, success = 1; - static poptContext pc; - char *session_name = NULL; - const char *leftover = NULL; - - struct lttng_session *sessions = NULL; - int count; - int found; - - pc = poptGetContext(NULL, argc, argv, long_options, 0); - poptReadDefaultConfig(pc, 0); - - while ((opt = poptGetNextOpt(pc)) != -1) { - switch (opt) { - case OPT_HELP: - SHOW_HELP(); - break; - case OPT_LIST_OPTIONS: - list_cmd_options(stdout, long_options); - break; - default: - ret = CMD_UNDEFINED; - break; - } - goto end; - } - - /* Mi preparation */ - if (lttng_opt_mi) { - writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); - if (!writer) { - ret = -LTTNG_ERR_NOMEM; - goto end; - } - - /* Open command element */ - ret = mi_lttng_writer_command_open(writer, - mi_lttng_element_command_destroy); - if (ret) { - ret = CMD_ERROR; - goto end; - } - - /* Open output element */ - ret = mi_lttng_writer_open_element(writer, - mi_lttng_element_command_output); - if (ret) { - ret = CMD_ERROR; - goto end; - } - - /* For validation and semantic purpose we open a sessions element */ - ret = mi_lttng_sessions_open(writer); - if (ret) { - ret = CMD_ERROR; - goto end; - } - } - - /* Recuperate all sessions for further operation */ - count = lttng_list_sessions(&sessions); - if (count < 0) { - ERR("%s", lttng_strerror(count)); - command_ret = CMD_ERROR; - success = 0; - goto mi_closing; - } - - /* Ignore session name in case all sessions are to be destroyed */ - if (opt_destroy_all) { - command_ret = destroy_all_sessions(sessions, count); - if (command_ret) { - success = 0; - } - } else { - opt_session_name = (char *) poptGetArg(pc); - - if (!opt_session_name) { - /* No session name specified, lookup default */ - session_name = get_session_name(); - if (session_name == NULL) { - command_ret = CMD_ERROR; - success = 0; - goto mi_closing; - } - } else { - session_name = opt_session_name; - } - - /* Find the corresponding lttng_session struct */ - found = 0; - for (i = 0; i < count; i++) { - if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { - found = 1; - command_ret = destroy_session(&sessions[i]); - if (command_ret) { - success = 0; - ERR("%s during the destruction of session \"%s\"", - lttng_strerror(command_ret), - sessions[i].name); - } - } - } - - if (!found) { - ERR("Session name %s not found", session_name); - command_ret = LTTNG_ERR_SESS_NOT_FOUND; - success = 0; - goto mi_closing; - } - } - - leftover = poptGetArg(pc); - if (leftover) { - ERR("Unknown argument: %s", leftover); - ret = CMD_ERROR; - success = 0; - goto mi_closing; - } - -mi_closing: - /* Mi closing */ - if (lttng_opt_mi) { - /* Close sessions and output element element */ - ret = mi_lttng_close_multi_element(writer, 2); - if (ret) { - ret = CMD_ERROR; - goto end; - } - - /* Success ? */ - ret = mi_lttng_writer_write_element_bool(writer, - mi_lttng_element_command_success, success); - if (ret) { - ret = CMD_ERROR; - goto end; - } - - /* Command element close */ - ret = mi_lttng_writer_command_close(writer); - if (ret) { - ret = CMD_ERROR; - goto end; - } - } -end: - /* Mi clean-up */ - if (writer && mi_lttng_writer_destroy(writer)) { - /* Preserve original error code */ - ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; - } - - if (opt_session_name == NULL) { - free(session_name); - } - - free(sessions); - - /* Overwrite ret if an error occurred during destroy_session/all */ - ret = command_ret ? command_ret : ret; - - poptFreeContext(pc); - return ret; -}