--- /dev/null
+/*
+ * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <common/common.h>
+#include <common/thread.h>
+#include <common/compat/errno.h>
+#include <common/compat/getenv.h>
+#include <lttng/lttng-error.h>
+
+#include "error.h"
+
+/*
+ * lttng_opt_abort_on_error: unset: -1, disabled: 0, enabled: 1.
+ * Controlled by the LTTNG_ABORT_ON_ERROR environment variable.
+ */
+static int lttng_opt_abort_on_error = -1;
+
+/* TLS variable that contains the time of one single log entry. */
+DEFINE_URCU_TLS(struct log_time, error_log_time);
+DEFINE_URCU_TLS(const char *, logger_thread_name);
+
+const char *log_add_time(void)
+{
+ int ret;
+ struct tm tm, *res;
+ struct timespec tp;
+ time_t now;
+ const int errsv = errno;
+
+ ret = lttng_clock_gettime(CLOCK_REALTIME, &tp);
+ if (ret < 0) {
+ goto error;
+ }
+ now = (time_t) tp.tv_sec;
+
+ res = localtime_r(&now, &tm);
+ if (!res) {
+ goto error;
+ }
+
+ /* Format time in the TLS variable. */
+ ret = snprintf(URCU_TLS(error_log_time).str, sizeof(URCU_TLS(error_log_time).str),
+ "%02d:%02d:%02d.%09ld",
+ tm.tm_hour, tm.tm_min, tm.tm_sec, tp.tv_nsec);
+ if (ret < 0) {
+ goto error;
+ }
+
+ errno = errsv;
+ return URCU_TLS(error_log_time).str;
+
+error:
+ /* Return an empty string on error so logging is not affected. */
+ errno = errsv;
+ return "";
+}
+
+void logger_set_thread_name(const char *name, bool set_pthread_name)
+{
+ int ret;
+
+ LTTNG_ASSERT(name);
+ URCU_TLS(logger_thread_name) = name;
+
+ if (set_pthread_name) {
+ ret = lttng_thread_setname(name);
+ if (ret && ret != -ENOSYS) {
+ /* Don't fail as this is not essential. */
+ DBG("Failed to set pthread name attribute");
+ }
+ }
+}
+
+/*
+ * Human readable error message.
+ */
+static
+const char *lttng_error_code_str(lttng_error_code code)
+{
+ switch (code) {
+ case LTTNG_OK:
+ return "Success";
+ case LTTNG_ERR_UNK:
+ return "Unknown error";
+ case LTTNG_ERR_UND:
+ return "Undefined command";
+ case LTTNG_ERR_UNKNOWN_DOMAIN:
+ return "Unknown tracing domain";
+ case LTTNG_ERR_NO_SESSION:
+ return "No session found";
+ case LTTNG_ERR_CREATE_DIR_FAIL:
+ return "Create directory failed";
+ case LTTNG_ERR_SESSION_FAIL:
+ return "Create session failed";
+ case LTTNG_ERR_SESS_NOT_FOUND:
+ return "Session name not found";
+ case LTTNG_ERR_FATAL:
+ return "Fatal error of the session daemon";
+ case LTTNG_ERR_SELECT_SESS:
+ return "A session MUST be selected";
+ case LTTNG_ERR_EXIST_SESS:
+ return "Session name already exists";
+ case LTTNG_ERR_NO_EVENT:
+ return "Event not found";
+ case LTTNG_ERR_CONNECT_FAIL:
+ return "Unable to connect to Unix socket";
+ case LTTNG_ERR_EPERM:
+ return "Permission denied";
+ case LTTNG_ERR_KERN_NA:
+ return "Kernel tracer not available";
+ case LTTNG_ERR_KERN_VERSION:
+ return "Kernel tracer version is not compatible";
+ case LTTNG_ERR_KERN_EVENT_EXIST:
+ return "Kernel event already exists";
+ case LTTNG_ERR_KERN_SESS_FAIL:
+ return "Kernel create session failed";
+ case LTTNG_ERR_KERN_CHAN_EXIST:
+ return "Kernel channel already exists";
+ case LTTNG_ERR_KERN_CHAN_FAIL:
+ return "Kernel create channel failed";
+ case LTTNG_ERR_KERN_CHAN_NOT_FOUND:
+ return "Kernel channel not found";
+ case LTTNG_ERR_KERN_CHAN_DISABLE_FAIL:
+ return "Disable kernel channel failed";
+ case LTTNG_ERR_KERN_CHAN_ENABLE_FAIL:
+ return "Enable kernel channel failed";
+ case LTTNG_ERR_KERN_CONTEXT_FAIL:
+ return "Add kernel context failed";
+ case LTTNG_ERR_KERN_ENABLE_FAIL:
+ return "Enable kernel event failed";
+ case LTTNG_ERR_KERN_DISABLE_FAIL:
+ return "Disable kernel event failed";
+ case LTTNG_ERR_KERN_META_FAIL:
+ return "Opening metadata failed";
+ case LTTNG_ERR_KERN_START_FAIL:
+ return "Starting kernel trace failed";
+ case LTTNG_ERR_KERN_STOP_FAIL:
+ return "Stopping kernel trace failed";
+ case LTTNG_ERR_KERN_CONSUMER_FAIL:
+ return "Kernel consumer start failed";
+ case LTTNG_ERR_KERN_STREAM_FAIL:
+ return "Kernel create stream failed";
+ case LTTNG_ERR_KERN_LIST_FAIL:
+ return "Listing kernel events failed";
+ case LTTNG_ERR_UST_CALIBRATE_FAIL:
+ return "UST calibration failed";
+ case LTTNG_ERR_UST_SESS_FAIL:
+ return "UST create session failed";
+ case LTTNG_ERR_UST_CHAN_FAIL:
+ return "UST create channel failed";
+ case LTTNG_ERR_UST_CHAN_EXIST:
+ return "UST channel already exist";
+ case LTTNG_ERR_UST_CHAN_NOT_FOUND:
+ return "UST channel not found";
+ case LTTNG_ERR_UST_CHAN_DISABLE_FAIL:
+ return "Disable UST channel failed";
+ case LTTNG_ERR_UST_CHAN_ENABLE_FAIL:
+ return "Enable UST channel failed";
+ case LTTNG_ERR_UST_ENABLE_FAIL:
+ return "Enable UST event failed";
+ case LTTNG_ERR_UST_DISABLE_FAIL:
+ return "Disable UST event failed";
+ case LTTNG_ERR_UST_META_FAIL:
+ return "Opening metadata failed";
+ case LTTNG_ERR_UST_START_FAIL:
+ return "Starting UST trace failed";
+ case LTTNG_ERR_UST_STOP_FAIL:
+ return "Stopping UST trace failed";
+ case LTTNG_ERR_UST_CONSUMER64_FAIL:
+ return "64-bit UST consumer start failed";
+ case LTTNG_ERR_UST_CONSUMER32_FAIL:
+ return "32-bit UST consumer start failed";
+ case LTTNG_ERR_UST_STREAM_FAIL:
+ return "UST create stream failed";
+ case LTTNG_ERR_UST_LIST_FAIL:
+ return "Listing UST events failed";
+ case LTTNG_ERR_UST_EVENT_EXIST:
+ return "UST event already exist";
+ case LTTNG_ERR_UST_EVENT_NOT_FOUND:
+ return "UST event not found";
+ case LTTNG_ERR_UST_CONTEXT_EXIST:
+ return "UST context already exist";
+ case LTTNG_ERR_UST_CONTEXT_INVAL:
+ return "UST invalid context";
+ case LTTNG_ERR_NEED_ROOT_SESSIOND:
+ return "Tracing the kernel requires a root lttng-sessiond daemon, as well as \"tracing\" group membership or root user ID for the lttng client";
+ case LTTNG_ERR_NO_UST:
+ return "LTTng-UST tracer is not supported. Please rebuild lttng-tools with lttng-ust support enabled";
+ case LTTNG_ERR_TRACE_ALREADY_STARTED:
+ return "Tracing has already been started once";
+ case LTTNG_ERR_TRACE_ALREADY_STOPPED:
+ return "Tracing has already been stopped";
+ case LTTNG_ERR_KERN_EVENT_ENOSYS:
+ return "Kernel event type not supported";
+ case LTTNG_ERR_NEED_CHANNEL_NAME:
+ return "Non-default channel exists within session: channel name needs to be specified with '-c name'";
+ case LTTNG_ERR_INVALID:
+ return "Invalid parameter";
+ case LTTNG_ERR_NO_USTCONSUMERD:
+ return "No UST consumer detected";
+ case LTTNG_ERR_NO_KERNCONSUMERD:
+ return "No kernel consumer detected";
+ case LTTNG_ERR_EVENT_EXIST_LOGLEVEL:
+ return "Event already enabled with different loglevel";
+ case LTTNG_ERR_URL_DATA_MISS:
+ return "Missing data path URL";
+ case LTTNG_ERR_URL_CTRL_MISS:
+ return "Missing control path URL";
+ case LTTNG_ERR_ENABLE_CONSUMER_FAIL:
+ return "Enabling consumer failed";
+ case LTTNG_ERR_RELAYD_CONNECT_FAIL:
+ return "Unable to connect to lttng-relayd";
+ case LTTNG_ERR_RELAYD_VERSION_FAIL:
+ return "Relay daemon not compatible";
+ case LTTNG_ERR_FILTER_INVAL:
+ return "Invalid filter bytecode";
+ case LTTNG_ERR_FILTER_NOMEM:
+ return "Not enough memory for filter bytecode";
+ case LTTNG_ERR_FILTER_EXIST:
+ return "Filter already exist";
+ case LTTNG_ERR_NO_CONSUMER:
+ return "Consumer not found for recording session";
+ case LTTNG_ERR_EXCLUSION_INVAL:
+ return "Invalid event exclusion data";
+ case LTTNG_ERR_EXCLUSION_NOMEM:
+ return "Lack of memory while processing event exclusions";
+ case LTTNG_ERR_NO_SESSIOND:
+ return "No session daemon is available";
+ case LTTNG_ERR_SESSION_STARTED:
+ return "Session is running";
+ case LTTNG_ERR_NOT_SUPPORTED:
+ return "Operation not supported";
+ case LTTNG_ERR_UST_EVENT_ENABLED:
+ return "UST event already enabled";
+ case LTTNG_ERR_SET_URL:
+ return "Error setting URL";
+ case LTTNG_ERR_URL_EXIST:
+ return "URL already exists";
+ case LTTNG_ERR_BUFFER_NOT_SUPPORTED:
+ return "Buffer type not supported";
+ case LTTNG_ERR_BUFFER_TYPE_MISMATCH:
+ return "Buffer type mismatch for session";
+ case LTTNG_ERR_NOMEM:
+ return "Not enough memory";
+ case LTTNG_ERR_SNAPSHOT_OUTPUT_EXIST:
+ return "Snapshot output already exists";
+ case LTTNG_ERR_START_SESSION_ONCE:
+ return "Session needs to be started once";
+ case LTTNG_ERR_SNAPSHOT_FAIL:
+ return "Snapshot record failed";
+ case LTTNG_ERR_NO_STREAM:
+ return "Index without stream on relay";
+ case LTTNG_ERR_CHAN_EXIST:
+ return "Channel already exists";
+ case LTTNG_ERR_SNAPSHOT_NODATA:
+ return "No data available in snapshot";
+ case LTTNG_ERR_NO_CHANNEL:
+ return "No channel found in the session";
+ case LTTNG_ERR_SESSION_INVALID_CHAR:
+ return "Invalid character found in session name";
+ case LTTNG_ERR_SAVE_FILE_EXIST:
+ return "Session file already exists";
+ case LTTNG_ERR_SAVE_IO_FAIL:
+ return "IO error while writing session configuration";
+ case LTTNG_ERR_LOAD_INVALID_CONFIG:
+ return "Invalid session configuration";
+ case LTTNG_ERR_LOAD_IO_FAIL:
+ return "IO error while reading a session configuration";
+ case LTTNG_ERR_LOAD_SESSION_NOENT:
+ return "Session file not found";
+ case LTTNG_ERR_MAX_SIZE_INVALID:
+ return "Snapshot max size is invalid";
+ case LTTNG_ERR_MI_OUTPUT_TYPE:
+ return "Invalid MI output format";
+ case LTTNG_ERR_MI_IO_FAIL:
+ return "IO error while writing MI output";
+ case LTTNG_ERR_MI_NOT_IMPLEMENTED:
+ return "Mi feature not implemented";
+ case LTTNG_ERR_INVALID_EVENT_NAME:
+ return "Invalid event name";
+ case LTTNG_ERR_INVALID_CHANNEL_NAME:
+ return "Invalid channel name";
+ case LTTNG_ERR_PROCESS_ATTR_EXISTS:
+ return "Process attribute is already tracked";
+ case LTTNG_ERR_PROCESS_ATTR_MISSING:
+ return "Process attribute was not tracked";
+ case LTTNG_ERR_INVALID_CHANNEL_DOMAIN:
+ return "Invalid channel domain";
+ case LTTNG_ERR_OVERFLOW:
+ return "Overflow occurred";
+ case LTTNG_ERR_SESSION_NOT_STARTED:
+ return "Session not started";
+ case LTTNG_ERR_LIVE_SESSION:
+ return "Live sessions are not supported";
+ case LTTNG_ERR_PER_PID_SESSION:
+ return "Per-PID recording sessions are not supported";
+ case LTTNG_ERR_KERN_CONTEXT_UNAVAILABLE:
+ return "Context unavailable on this kernel";
+ case LTTNG_ERR_REGEN_STATEDUMP_FAIL:
+ return "Failed to regenerate the state dump";
+ case LTTNG_ERR_REGEN_STATEDUMP_NOMEM:
+ return "Failed to regenerate the state dump, not enough memory";
+ case LTTNG_ERR_NOT_SNAPSHOT_SESSION:
+ return "Snapshot command can't be applied to a non-snapshot session";
+ case LTTNG_ERR_INVALID_TRIGGER:
+ return "Invalid trigger";
+ case LTTNG_ERR_TRIGGER_EXISTS:
+ return "Trigger already registered";
+ case LTTNG_ERR_TRIGGER_NOT_FOUND:
+ return "Trigger not found";
+ case LTTNG_ERR_COMMAND_CANCELLED:
+ return "Command cancelled";
+ case LTTNG_ERR_ROTATION_PENDING:
+ return "Rotation already pending for this session";
+ case LTTNG_ERR_ROTATION_NOT_AVAILABLE:
+ return "Rotation feature not available for this session's creation mode";
+ case LTTNG_ERR_ROTATION_SCHEDULE_SET:
+ return "A session rotation schedule of this type is already set on the session";
+ case LTTNG_ERR_ROTATION_SCHEDULE_NOT_SET:
+ return "No session rotation schedule of this type is set on the session";
+ case LTTNG_ERR_ROTATION_MULTIPLE_AFTER_STOP:
+ return "Session was already rotated once since it became inactive";
+ case LTTNG_ERR_ROTATION_WRONG_VERSION:
+ return "Session rotation is not supported by this kernel tracer version";
+ case LTTNG_ERR_NO_SESSION_OUTPUT:
+ return "Session has no output";
+ case LTTNG_ERR_ROTATION_NOT_AVAILABLE_RELAY:
+ return "Rotation feature not available on the relay";
+ case LTTNG_ERR_AGENT_TRACING_DISABLED:
+ return "Session daemon agent tracing is disabled";
+ case LTTNG_ERR_PROBE_LOCATION_INVAL:
+ return "Invalid userspace probe location";
+ case LTTNG_ERR_ELF_PARSING:
+ return "ELF parsing error";
+ case LTTNG_ERR_SDT_PROBE_SEMAPHORE:
+ return "SDT probe guarded by a semaphore";
+ case LTTNG_ERR_ROTATION_FAIL_CONSUMER:
+ return "Rotation failure on consumer";
+ case LTTNG_ERR_ROTATE_RENAME_FAIL_CONSUMER:
+ return "Rotation rename failure on consumer";
+ case LTTNG_ERR_ROTATION_PENDING_LOCAL_FAIL_CONSUMER:
+ return "Rotation pending check (local) failure on consumer";
+ case LTTNG_ERR_ROTATION_PENDING_RELAY_FAIL_CONSUMER:
+ return "Rotation pending check (relay) failure on consumer";
+ case LTTNG_ERR_MKDIR_FAIL_CONSUMER:
+ return "Directory creation failure on consumer";
+ case LTTNG_ERR_CHAN_NOT_FOUND:
+ return "Channel not found";
+ case LTTNG_ERR_SNAPSHOT_UNSUPPORTED:
+ return "Session configuration does not allow the use of snapshots";
+ case LTTNG_ERR_SESSION_NOT_EXIST:
+ return "Recording session does not exist";
+ case LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER:
+ return "Trace chunk creation failed on consumer";
+ case LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER:
+ return "Trace chunk close failed on consumer";
+ case LTTNG_ERR_TRACE_CHUNK_EXISTS_FAIL_CONSUMER:
+ return "Failed to query consumer for trace chunk existence";
+ case LTTNG_ERR_INVALID_PROTOCOL:
+ return "Protocol error occurred";
+ case LTTNG_ERR_FILE_CREATION_ERROR:
+ return "Failed to create file";
+ case LTTNG_ERR_TIMER_STOP_ERROR:
+ return "Failed to stop a timer";
+ case LTTNG_ERR_ROTATION_NOT_AVAILABLE_KERNEL:
+ return "Rotation feature not supported by the kernel tracer";
+ case LTTNG_ERR_CLEAR_RELAY_DISALLOWED:
+ return "Relayd daemon peer does not allow sessions to be cleared";
+ case LTTNG_ERR_CLEAR_NOT_AVAILABLE_RELAY:
+ return "Clearing a session is not supported by the relay daemon";
+ case LTTNG_ERR_CLEAR_FAIL_CONSUMER:
+ return "Consumer failed to clear the session";
+ case LTTNG_ERR_ROTATION_AFTER_STOP_CLEAR:
+ return "Session was already cleared since it became inactive";
+ case LTTNG_ERR_USER_NOT_FOUND:
+ return "User not found";
+ case LTTNG_ERR_GROUP_NOT_FOUND:
+ return "Group not found";
+ case LTTNG_ERR_UNSUPPORTED_DOMAIN:
+ return "Unsupported domain used";
+ case LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY:
+ return "Operation does not apply to the process attribute tracker's tracking policy";
+ case LTTNG_ERR_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD:
+ return "Failed to create an event notifier group notification file descriptor";
+ case LTTNG_ERR_INVALID_CAPTURE_EXPRESSION:
+ return "Invalid capture expression";
+ case LTTNG_ERR_EVENT_NOTIFIER_REGISTRATION:
+ return "Failed to create event notifier";
+ case LTTNG_ERR_EVENT_NOTIFIER_ERROR_ACCOUNTING:
+ return "Failed to initialize event notifier error accounting";
+ case LTTNG_ERR_EVENT_NOTIFIER_ERROR_ACCOUNTING_FULL:
+ return "No index available in event notifier error accounting";
+ case LTTNG_ERR_INVALID_ERROR_QUERY_TARGET:
+ return "Invalid error query target.";
+ case LTTNG_ERR_BUFFER_FLUSH_FAILED:
+ return "Failed to flush stream buffer";
+ case LTTNG_ERR_NR:
+ abort();
+ }
+
+ abort();
+};
+
+/*
+ * Return ptr to string representing a human readable error code from the
+ * lttng_error_code enum.
+ *
+ * These code MUST be negative in other to treat that as an error value.
+ */
+const char *error_get_str(int32_t code)
+{
+ code = -code;
+
+ if (code < LTTNG_OK || code >= LTTNG_ERR_NR) {
+ code = LTTNG_ERR_UNK;
+ }
+
+ return lttng_error_code_str((lttng_error_code) code);
+}
+
+void lttng_abort_on_error(void)
+{
+ if (lttng_opt_abort_on_error < 0) {
+ /* Use lttng_secure_getenv() to query its state. */
+ const char *value;
+
+ value = lttng_secure_getenv("LTTNG_ABORT_ON_ERROR");
+ if (value && !strcmp(value, "1")) {
+ lttng_opt_abort_on_error = 1;
+ } else {
+ lttng_opt_abort_on_error = 0;
+ }
+ }
+ if (lttng_opt_abort_on_error > 0) {
+ abort();
+ }
+}
projects / lttng-tools.git / blobdiff