--- /dev/null
+/*
+ * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <lttng/map/map.h>
+
+#include "common/argpar/argpar.h"
+#include "common/utils.h"
+
+#include "../command.h"
+#include "../utils.h"
+
+#define LTTNG_MAP_DEFAULT_SIZE 4096
+
+enum {
+ OPT_HELP,
+ OPT_SESSION,
+ OPT_USERSPACE,
+ OPT_KERNEL,
+ OPT_MAX_KEY_COUNT,
+ OPT_PER_PID,
+ OPT_PER_UID,
+ OPT_OVERFLOW,
+ OPT_BITNESS,
+ OPT_COALESCE_HITS,
+};
+
+static const struct argpar_opt_descr add_map_opt_descrs[] = {
+
+ { OPT_HELP, 'h', "help", false },
+ { OPT_SESSION, 's', "session", true },
+ { OPT_USERSPACE, 'u', "userspace", false },
+ { OPT_KERNEL, 'k', "kernel", false },
+ { OPT_MAX_KEY_COUNT, '\0', "max-key-count", true},
+ { OPT_PER_PID, '\0', "per-pid", false},
+ { OPT_PER_UID, '\0', "per-uid", false},
+ { OPT_OVERFLOW, '\0', "overflow", false},
+ { OPT_BITNESS, '\0', "bitness", true},
+ { OPT_COALESCE_HITS, '\0', "coalesce-hits", false},
+ ARGPAR_OPT_DESCR_SENTINEL
+};
+
+static
+bool assign_string(char **dest, const char *src, const char *opt_name)
+{
+ bool ret;
+
+ if (*dest) {
+ ERR("Duplicate %s given.", opt_name);
+ goto error;
+ }
+
+ *dest = strdup(src);
+ if (!*dest) {
+ ERR("Failed to allocate %s string.", opt_name);
+ goto error;
+ }
+
+ ret = true;
+ goto end;
+
+error:
+ ret = false;
+
+end:
+ return ret;
+}
+
+int cmd_add_map(int argc, const char **argv)
+{
+ int ret, i;
+ enum lttng_error_code error_code_ret;
+ struct argpar_parse_ret argpar_parse_ret = { 0 };
+ bool opt_userspace = false, opt_kernel = false, opt_buffers_uid = false,
+ opt_buffers_pid = false, opt_overflow = false, opt_coalesce_hits = false;
+ char *opt_session_name = NULL, *session_name = NULL, *opt_max_key_count = NULL, *opt_bitness = NULL;
+ const char *opt_map_name = NULL;;
+ enum lttng_map_bitness bitness_type;
+ enum lttng_map_boundary_policy boundary_policy;
+ enum lttng_map_status status;
+ uint64_t dimensions_sizes[1] = {0};
+ unsigned long long bitness;
+ struct lttng_map *map;
+ struct lttng_domain dom = {0};
+ struct lttng_handle *handle = NULL;
+
+ argpar_parse_ret = argpar_parse(argc - 1, argv + 1,
+ add_map_opt_descrs, true);
+ if (!argpar_parse_ret.items) {
+ ERR("%s", argpar_parse_ret.error);
+ goto error;
+ }
+
+ for (i = 0; i < argpar_parse_ret.items->n_items; i++) {
+ struct argpar_item *item = argpar_parse_ret.items->items[i];
+
+ if (item->type == ARGPAR_ITEM_TYPE_OPT) {
+ struct argpar_item_opt *item_opt =
+ (struct argpar_item_opt *) item;
+
+ switch (item_opt->descr->id) {
+ case OPT_HELP:
+ SHOW_HELP();
+ ret = CMD_SUCCESS;
+ goto end;
+ case OPT_SESSION:
+ if (!assign_string(&opt_session_name, item_opt->arg,
+ "-s/--session")) {
+ goto error;
+ }
+ break;
+ case OPT_USERSPACE:
+ opt_userspace = true;
+ break;
+ case OPT_KERNEL:
+ opt_kernel = true;
+ break;
+ case OPT_MAX_KEY_COUNT:
+ if (!assign_string(&opt_max_key_count, item_opt->arg,
+ "--max-key-count")) {
+ goto error;
+ }
+ break;
+ case OPT_PER_PID:
+ opt_buffers_pid = true;
+ break;
+ case OPT_PER_UID:
+ opt_buffers_uid = true;
+ break;
+ case OPT_OVERFLOW:
+ opt_overflow = true;
+ break;
+ case OPT_BITNESS:
+ if (!assign_string(&opt_bitness, item_opt->arg,
+ "--bitness")) {
+ goto error;
+ }
+ break;
+ case OPT_COALESCE_HITS:
+ opt_coalesce_hits = true;
+ break;
+ default:
+ abort();
+ }
+ } else {
+ struct argpar_item_non_opt *item_non_opt =
+ (struct argpar_item_non_opt *) item;
+
+ if (opt_map_name) {
+ ERR("Unexpected argument: %s", item_non_opt->arg);
+ goto error;
+ }
+
+ opt_map_name = item_non_opt->arg;
+ }
+ }
+
+ if (!opt_map_name) {
+ ERR("Missing map name");
+ goto error;
+ }
+
+ if (!opt_session_name) {
+ session_name = get_session_name();
+ if (session_name == NULL) {
+ goto error;
+ }
+ } else {
+ session_name = opt_session_name;
+ }
+
+ /* Check that one and only one domain option was provided. */
+ ret = print_missing_or_multiple_domains(
+ opt_kernel + opt_userspace, false);
+ if (ret) {
+ goto error;
+ }
+
+ if (opt_kernel) {
+ dom.type = LTTNG_DOMAIN_KERNEL;
+ if (opt_buffers_uid || opt_buffers_pid) {
+ ERR("Buffer type not supported for kernel domain");
+ goto error;
+ }
+ dom.buf_type = LTTNG_BUFFER_GLOBAL;
+ } else {
+ dom.type = LTTNG_DOMAIN_UST;
+
+ if (opt_buffers_uid && opt_buffers_pid) {
+ ERR("Only one domain can be specified");
+ goto error;
+ }
+ if (opt_buffers_pid) {
+ dom.buf_type = LTTNG_BUFFER_PER_PID;
+ } else {
+ /* Defaults to per UID */
+ dom.buf_type = LTTNG_BUFFER_PER_UID;
+ }
+ }
+
+ handle = lttng_create_handle(session_name, &dom);
+ if (handle == NULL) {
+ ret = -1;
+ goto error;
+ }
+
+ if (opt_max_key_count) {
+ unsigned long long max_key_count;
+ if (utils_parse_unsigned_long_long(opt_max_key_count, &max_key_count) != 0) {
+ ERR("Failed to parse `%s` as an integer.", opt_max_key_count);
+ goto error;
+ }
+
+ dimensions_sizes[0] = max_key_count;
+ } else {
+ dimensions_sizes[0] = LTTNG_MAP_DEFAULT_SIZE;
+ }
+
+ if (opt_bitness) {
+ if (utils_parse_unsigned_long_long(opt_bitness, &bitness) != 0) {
+ ERR("Failed to parse `%s` as an integer.", opt_bitness);
+ goto error;
+ }
+ switch (bitness) {
+ case 32:
+ bitness_type = LTTNG_MAP_BITNESS_32BITS;
+ break;
+ case 64:
+ bitness_type = LTTNG_MAP_BITNESS_64BITS;
+ break;
+ default:
+ ERR("Bitness %llu not supported", bitness);
+ goto error;
+ }
+
+ } else {
+ bitness_type = LTTNG_MAP_BITNESS_64BITS;
+ }
+
+
+ if (opt_overflow) {
+ boundary_policy = LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW;
+ } else {
+ boundary_policy = LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW;
+ }
+
+ status = lttng_map_create(opt_map_name, 1, dimensions_sizes, dom.type,
+ dom.buf_type, bitness_type, boundary_policy,
+ opt_coalesce_hits, &map);
+ if (status != LTTNG_MAP_STATUS_OK) {
+ ERR("Creating map \"%s\"", opt_map_name);
+ goto error;
+ }
+
+ error_code_ret = lttng_add_map(handle, map);
+ if (error_code_ret != LTTNG_OK) {
+ ERR("Adding map \"%s\": %s", opt_map_name,
+ lttng_strerror(error_code_ret));
+ lttng_map_destroy(map);
+ goto error;
+ }
+
+ MSG("Map %s created.", opt_map_name);
+ ret = CMD_SUCCESS;
+
+ lttng_map_destroy(map);
+
+ goto end;
+
+error:
+ ret = CMD_ERROR;
+end:
+ argpar_parse_ret_fini(&argpar_parse_ret);
+ free(opt_session_name);
+ free(opt_max_key_count);
+ free(opt_bitness);
+ lttng_destroy_handle(handle);
+ return ret;
+}
projects / lttng-tools.git / blobdiff