X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ferror.c;h=82190b9fd527cea831f61e9620b43f73d1984c17;hp=4fb022cc2948579da84bed73e6bab396536bb704;hb=f5fb86c1254b785eee8caf87cb996d33eda0ede9;hpb=7972aab22f74b18faa168c0482216a3dd711a075 diff --git a/src/common/error.c b/src/common/error.c index 4fb022cc2..82190b9fd 100644 --- a/src/common/error.c +++ b/src/common/error.c @@ -1,30 +1,97 @@ /* - * Copyright (C) 2012 - David Goulet + * Copyright (C) 2012 David Goulet * - * 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. + * SPDX-License-Identifier: GPL-2.0-only * - * 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. */ -#define _GNU_SOURCE +#define _LGPL_SOURCE #include +#include +#include +#include +#include +#include -#include #include +#include +#include #include "error.h" #define ERROR_INDEX(code) (code - LTTNG_OK) +/* + * 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); + +LTTNG_HIDDEN +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 ""; +} + +LTTNG_HIDDEN +void logger_set_thread_name(const char *name, bool set_pthread_name) +{ + int ret; + + assert(name); + URCU_TLS(logger_thread_name) = name; + + if (set_pthread_name) { + char pthread_name[16]; + + /* + * Truncations are expected since pthread limits thread names to + * a generous 16 characters. + */ + strncpy(pthread_name, name, sizeof(pthread_name)); + pthread_name[sizeof(pthread_name) - 1] = '\0'; + ret = pthread_setname_np(pthread_self(), pthread_name); + if (ret) { + DBG("Failed to set pthread name attribute"); + } + } +} + /* * Human readable error message. */ @@ -40,7 +107,7 @@ static const char *error_string_array[] = { [ ERROR_INDEX(LTTNG_ERR_SESS_NOT_FOUND) ] = "Session name not found", [ ERROR_INDEX(LTTNG_ERR_FATAL) ] = "Fatal error of the session daemon", [ ERROR_INDEX(LTTNG_ERR_SELECT_SESS) ] = "A session MUST be selected", - [ ERROR_INDEX(LTTNG_ERR_EXIST_SESS) ] = "Session name already exist", + [ ERROR_INDEX(LTTNG_ERR_EXIST_SESS) ] = "Session name already exists", [ ERROR_INDEX(LTTNG_ERR_NO_EVENT) ] = "Event not found", [ ERROR_INDEX(LTTNG_ERR_CONNECT_FAIL) ] = "Unable to connect to Unix socket", [ ERROR_INDEX(LTTNG_ERR_EPERM) ] = "Permission denied", @@ -58,7 +125,7 @@ static const char *error_string_array[] = { [ ERROR_INDEX(LTTNG_ERR_KERN_DISABLE_FAIL) ] = "Disable kernel event failed", [ ERROR_INDEX(LTTNG_ERR_KERN_META_FAIL) ] = "Opening metadata failed", [ ERROR_INDEX(LTTNG_ERR_KERN_START_FAIL) ] = "Starting kernel trace failed", - [ ERROR_INDEX(LTTNG_ERR_KERN_STOP_FAIL) ] = "Stoping kernel trace failed", + [ ERROR_INDEX(LTTNG_ERR_KERN_STOP_FAIL) ] = "Stopping kernel trace failed", [ ERROR_INDEX(LTTNG_ERR_KERN_CONSUMER_FAIL) ] = "Kernel consumer start failed", [ ERROR_INDEX(LTTNG_ERR_KERN_STREAM_FAIL) ] = "Kernel create stream failed", [ ERROR_INDEX(LTTNG_ERR_KERN_LIST_FAIL) ] = "Listing kernel events failed", @@ -73,7 +140,7 @@ static const char *error_string_array[] = { [ ERROR_INDEX(LTTNG_ERR_UST_DISABLE_FAIL) ] = "Disable UST event failed", [ ERROR_INDEX(LTTNG_ERR_UST_META_FAIL) ] = "Opening metadata failed", [ ERROR_INDEX(LTTNG_ERR_UST_START_FAIL) ] = "Starting UST trace failed", - [ ERROR_INDEX(LTTNG_ERR_UST_STOP_FAIL) ] = "Stoping UST trace failed", + [ ERROR_INDEX(LTTNG_ERR_UST_STOP_FAIL) ] = "Stopping UST trace failed", [ ERROR_INDEX(LTTNG_ERR_UST_CONSUMER64_FAIL) ] = "64-bit UST consumer start failed", [ ERROR_INDEX(LTTNG_ERR_UST_CONSUMER32_FAIL) ] = "32-bit UST consumer start failed", [ ERROR_INDEX(LTTNG_ERR_UST_STREAM_FAIL) ] = "UST create stream failed", @@ -82,16 +149,18 @@ static const char *error_string_array[] = { [ ERROR_INDEX(LTTNG_ERR_UST_EVENT_NOT_FOUND)] = "UST event not found", [ ERROR_INDEX(LTTNG_ERR_UST_CONTEXT_EXIST)] = "UST context already exist", [ ERROR_INDEX(LTTNG_ERR_UST_CONTEXT_INVAL)] = "UST invalid context", - [ ERROR_INDEX(LTTNG_ERR_NEED_ROOT_SESSIOND) ] = "Tracing the kernel requires a root lttng-sessiond daemon and \"tracing\" group user membership", - [ ERROR_INDEX(LTTNG_ERR_TRACE_ALREADY_STARTED) ] = "Tracing already started", - [ ERROR_INDEX(LTTNG_ERR_TRACE_ALREADY_STOPPED) ] = "Tracing already stopped", + [ ERROR_INDEX(LTTNG_ERR_NEED_ROOT_SESSIOND) ] = "Tracing the kernel requires a root lttng-sessiond daemon, as well as \"tracing\" group membership or root user ID for the lttng client.", + [ ERROR_INDEX(LTTNG_ERR_NO_UST) ] = "LTTng-UST tracer is not supported. Please rebuild lttng-tools with lttng-ust support enabled.", + [ ERROR_INDEX(LTTNG_ERR_TRACE_ALREADY_STARTED) ] = "Tracing has already been started once", + [ ERROR_INDEX(LTTNG_ERR_TRACE_ALREADY_STOPPED) ] = "Tracing has already been stopped", [ ERROR_INDEX(LTTNG_ERR_KERN_EVENT_ENOSYS) ] = "Kernel event type not supported", + [ ERROR_INDEX(LTTNG_ERR_NEED_CHANNEL_NAME) ] = "Non-default channel exists within session: channel name needs to be specified with '-c name'", [ ERROR_INDEX(LTTNG_ERR_INVALID) ] = "Invalid parameter", [ ERROR_INDEX(LTTNG_ERR_NO_USTCONSUMERD) ] = "No UST consumer detected", [ ERROR_INDEX(LTTNG_ERR_NO_KERNCONSUMERD) ] = "No kernel consumer detected", [ ERROR_INDEX(LTTNG_ERR_EVENT_EXIST_LOGLEVEL) ] = "Event already enabled with different loglevel", [ ERROR_INDEX(LTTNG_ERR_URL_DATA_MISS) ] = "Missing data path URL", - [ ERROR_INDEX(LTTNG_ERR_URL_CTRL_MISS) ] = "Missing control data path URL", + [ ERROR_INDEX(LTTNG_ERR_URL_CTRL_MISS) ] = "Missing control path URL", [ ERROR_INDEX(LTTNG_ERR_ENABLE_CONSUMER_FAIL) ] = "Enabling consumer failed", [ ERROR_INDEX(LTTNG_ERR_RELAYD_CONNECT_FAIL) ] = "Unable to connect to lttng-relayd", [ ERROR_INDEX(LTTNG_ERR_RELAYD_VERSION_FAIL) ] = "Relay daemon not compatible", @@ -107,6 +176,75 @@ static const char *error_string_array[] = { [ ERROR_INDEX(LTTNG_ERR_URL_EXIST) ] = "URL already exists", [ ERROR_INDEX(LTTNG_ERR_BUFFER_NOT_SUPPORTED)] = "Buffer type not supported", [ ERROR_INDEX(LTTNG_ERR_BUFFER_TYPE_MISMATCH)] = "Buffer type mismatch for session", + [ ERROR_INDEX(LTTNG_ERR_NOMEM)] = "Not enough memory", + [ ERROR_INDEX(LTTNG_ERR_SNAPSHOT_OUTPUT_EXIST) ] = "Snapshot output already exists", + [ ERROR_INDEX(LTTNG_ERR_START_SESSION_ONCE) ] = "Session needs to be started once", + [ ERROR_INDEX(LTTNG_ERR_SNAPSHOT_FAIL) ] = "Snapshot record failed", + [ ERROR_INDEX(LTTNG_ERR_CHAN_EXIST) ] = "Channel already exists", + [ ERROR_INDEX(LTTNG_ERR_SNAPSHOT_NODATA) ] = "No data available in snapshot", + [ ERROR_INDEX(LTTNG_ERR_NO_CHANNEL) ] = "No channel found in the session", + [ ERROR_INDEX(LTTNG_ERR_SESSION_INVALID_CHAR) ] = "Invalid character found in session name", + [ ERROR_INDEX(LTTNG_ERR_SAVE_FILE_EXIST) ] = "Session file already exists", + [ ERROR_INDEX(LTTNG_ERR_SAVE_IO_FAIL) ] = "IO error while writing session configuration", + [ ERROR_INDEX(LTTNG_ERR_LOAD_INVALID_CONFIG) ] = "Invalid session configuration", + [ ERROR_INDEX(LTTNG_ERR_LOAD_IO_FAIL) ] = "IO error while reading a session configuration", + [ ERROR_INDEX(LTTNG_ERR_LOAD_SESSION_NOENT) ] = "Session file not found", + [ ERROR_INDEX(LTTNG_ERR_MAX_SIZE_INVALID) ] = "Snapshot max size is invalid", + [ ERROR_INDEX(LTTNG_ERR_MI_OUTPUT_TYPE) ] = "Invalid MI output format", + [ ERROR_INDEX(LTTNG_ERR_MI_IO_FAIL) ] = "IO error while writing MI output", + [ ERROR_INDEX(LTTNG_ERR_MI_NOT_IMPLEMENTED) ] = "Mi feature not implemented", + [ ERROR_INDEX(LTTNG_ERR_INVALID_EVENT_NAME) ] = "Invalid event name", + [ ERROR_INDEX(LTTNG_ERR_INVALID_CHANNEL_NAME) ] = "Invalid channel name", + [ ERROR_INDEX(LTTNG_ERR_PROCESS_ATTR_EXISTS) ] = "Process attribute is already tracked", + [ ERROR_INDEX(LTTNG_ERR_PROCESS_ATTR_MISSING) ] = "Process attribute was not tracked", + [ ERROR_INDEX(LTTNG_ERR_INVALID_CHANNEL_DOMAIN) ] = "Invalid channel domain", + [ ERROR_INDEX(LTTNG_ERR_OVERFLOW) ] = "Overflow occurred", + [ ERROR_INDEX(LTTNG_ERR_SESSION_NOT_STARTED) ] = "Session not started", + [ ERROR_INDEX(LTTNG_ERR_LIVE_SESSION) ] = "Live sessions are not supported", + [ ERROR_INDEX(LTTNG_ERR_PER_PID_SESSION) ] = "Per-PID tracing sessions are not supported", + [ ERROR_INDEX(LTTNG_ERR_KERN_CONTEXT_UNAVAILABLE) ] = "Context unavailable on this kernel", + [ ERROR_INDEX(LTTNG_ERR_REGEN_STATEDUMP_FAIL) ] = "Failed to regenerate the state dump", + [ ERROR_INDEX(LTTNG_ERR_REGEN_STATEDUMP_NOMEM) ] = "Failed to regenerate the state dump, not enough memory", + [ ERROR_INDEX(LTTNG_ERR_NOT_SNAPSHOT_SESSION) ] = "Snapshot command can't be applied to a non-snapshot session", + [ ERROR_INDEX(LTTNG_ERR_INVALID_TRIGGER) ] = "Invalid trigger", + [ ERROR_INDEX(LTTNG_ERR_TRIGGER_EXISTS) ] = "Trigger already registered", + [ ERROR_INDEX(LTTNG_ERR_TRIGGER_NOT_FOUND) ] = "Trigger not found", + [ ERROR_INDEX(LTTNG_ERR_COMMAND_CANCELLED) ] = "Command cancelled", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_PENDING) ] = "Rotation already pending for this session", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_NOT_AVAILABLE) ] = "Rotation feature not available for this session's creation mode", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_SCHEDULE_SET) ] = "A session rotation schedule of this type is already set on the session", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_SCHEDULE_NOT_SET) ] = "No session rotation schedule of this type is set on the session", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_MULTIPLE_AFTER_STOP) ] = "Session was already rotated once since it became inactive", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_WRONG_VERSION) ] = "Session rotation is not supported by this kernel tracer version", + [ ERROR_INDEX(LTTNG_ERR_NO_SESSION_OUTPUT) ] = "Session has no output", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_NOT_AVAILABLE_RELAY) ] = "Rotation feature not available on the relay", + [ ERROR_INDEX(LTTNG_ERR_AGENT_TRACING_DISABLED) ] = "Session daemon agent tracing is disabled", + [ ERROR_INDEX(LTTNG_ERR_PROBE_LOCATION_INVAL) ] = "Invalid userspace probe location", + [ ERROR_INDEX(LTTNG_ERR_ELF_PARSING) ] = "ELF parsing error", + [ ERROR_INDEX(LTTNG_ERR_SDT_PROBE_SEMAPHORE) ] = "SDT probe guarded by a semaphore", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_FAIL_CONSUMER) ] = "Rotation failure on consumer", + [ ERROR_INDEX(LTTNG_ERR_ROTATE_RENAME_FAIL_CONSUMER) ] = "Rotation rename failure on consumer", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_PENDING_LOCAL_FAIL_CONSUMER) ] = "Rotation pending check (local) failure on consumer", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_PENDING_RELAY_FAIL_CONSUMER) ] = "Rotation pending check (relay) failure on consumer", + [ ERROR_INDEX(LTTNG_ERR_MKDIR_FAIL_CONSUMER) ] = "Directory creation failure on consumer", + [ ERROR_INDEX(LTTNG_ERR_CHAN_NOT_FOUND) ] = "Channel not found", + [ ERROR_INDEX(LTTNG_ERR_SNAPSHOT_UNSUPPORTED) ] = "Session configuration does not allow the use of snapshots", + [ ERROR_INDEX(LTTNG_ERR_SESSION_NOT_EXIST) ] = "Tracing session does not exist", + [ ERROR_INDEX(LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER) ] = "Trace chunk creation failed on consumer", + [ ERROR_INDEX(LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER) ] = "Trace chunk close failed on consumer", + [ ERROR_INDEX(LTTNG_ERR_TRACE_CHUNK_EXISTS_FAIL_CONSUMER) ] = "Failed to query consumer for trace chunk existence", + [ ERROR_INDEX(LTTNG_ERR_INVALID_PROTOCOL) ] = "Protocol error occurred", + [ ERROR_INDEX(LTTNG_ERR_FILE_CREATION_ERROR) ] = "Failed to create file", + [ ERROR_INDEX(LTTNG_ERR_TIMER_STOP_ERROR) ] = "Failed to stop a timer", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_NOT_AVAILABLE_KERNEL) ] = "Rotation feature not supported by the kernel tracer.", + [ ERROR_INDEX(LTTNG_ERR_CLEAR_RELAY_DISALLOWED) ] = "Relayd daemon peer does not allow sessions to be cleared", + [ ERROR_INDEX(LTTNG_ERR_CLEAR_NOT_AVAILABLE_RELAY) ] = "Clearing a session is not supported by the relay daemon", + [ ERROR_INDEX(LTTNG_ERR_CLEAR_FAIL_CONSUMER) ] = "Consumer failed to clear the session", + [ ERROR_INDEX(LTTNG_ERR_ROTATION_AFTER_STOP_CLEAR) ] = "Session was already cleared since it became inactive", + [ ERROR_INDEX(LTTNG_ERR_USER_NOT_FOUND) ] = "User not found", + [ ERROR_INDEX(LTTNG_ERR_GROUP_NOT_FOUND) ] = "Group not found", + [ ERROR_INDEX(LTTNG_ERR_UNSUPPORTED_DOMAIN) ] = "Unsupported domain used", + [ ERROR_INDEX(LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY) ] = "Operation does not apply to the process attribute tracker's tracking policy", /* Last element */ [ ERROR_INDEX(LTTNG_ERR_NR) ] = "Unknown error code" @@ -129,3 +267,22 @@ const char *error_get_str(int32_t code) return error_string_array[ERROR_INDEX(code)]; } + +LTTNG_HIDDEN +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(); + } +}