X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ferror.c;h=c5ddadfa07976b2ad406ff3d3819293d3f0f9646;hp=911baea3ed4b42f0671dc1e53d9c32dd78287b22;hb=546699de452c27c8687a9c4e522359079ef5e4fa;hpb=b51ec5b4b698a201dbd081ed5104591db44e38e9 diff --git a/src/common/error.c b/src/common/error.c index 911baea3e..c5ddadfa0 100644 --- a/src/common/error.c +++ b/src/common/error.c @@ -15,16 +15,67 @@ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#define _GNU_SOURCE +#define _LGPL_SOURCE #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); + +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 ""; +} + /* * Human readable error message. */ @@ -84,8 +135,8 @@ static const char *error_string_array[] = { [ 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, 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 already started", - [ ERROR_INDEX(LTTNG_ERR_TRACE_ALREADY_STOPPED) ] = "Tracing already stopped", + [ 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", @@ -113,6 +164,69 @@ static const char *error_string_array[] = { [ 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_ID_TRACKED) ] = "ID already tracked", + [ ERROR_INDEX(LTTNG_ERR_ID_NOT_TRACKED) ] = "ID 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", /* Last element */ [ ERROR_INDEX(LTTNG_ERR_NR) ] = "Unknown error code" @@ -135,3 +249,22 @@ 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(); + } +}