+++ /dev/null
-/*
- * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <stdlib.h>
-#include <ctype.h>
-#include <limits.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <signal.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <inttypes.h>
-#include <unistd.h>
-
-#include <common/error.h>
-#include <common/utils.h>
-#include <common/defaults.h>
-
-#include "conf.h"
-#include "utils.h"
-#include "command.h"
-
-static const char *str_all = "ALL";
-static const char *str_tracepoint = "Tracepoint";
-static const char *str_syscall = "Syscall";
-static const char *str_probe = "Probe";
-static const char *str_userspace_probe = "Userspace Probe";
-static const char *str_function = "Function";
-
-static
-char *_get_session_name(int quiet)
-{
- const char *path;
- char *session_name = NULL;
-
- /* Get path to config file */
- path = utils_get_home_dir();
- if (path == NULL) {
- goto error;
- }
-
- /* Get session name from config */
- session_name = quiet ? config_read_session_name_quiet(path) :
- config_read_session_name(path);
- if (session_name == NULL) {
- goto error;
- }
-
- DBG2("Config file path found: %s", path);
- DBG("Session name found: %s", session_name);
- return session_name;
-
-error:
- return NULL;
-}
-
-/*
- * get_session_name
- *
- * Return allocated string with the session name found in the config
- * directory.
- */
-char *get_session_name(void)
-{
- return _get_session_name(0);
-}
-
-/*
- * get_session_name_quiet (no warnings/errors emitted)
- *
- * Return allocated string with the session name found in the config
- * directory.
- */
-char *get_session_name_quiet(void)
-{
- return _get_session_name(1);
-}
-
-/*
- * list_commands
- *
- * List commands line by line. This is mostly for bash auto completion and to
- * avoid difficult parsing.
- */
-void list_commands(struct cmd_struct *commands, FILE *ofp)
-{
- int i = 0;
- struct cmd_struct *cmd = NULL;
-
- cmd = &commands[i];
- while (cmd->name != NULL) {
- fprintf(ofp, "%s\n", cmd->name);
- i++;
- cmd = &commands[i];
- }
-}
-
-/*
- * list_cmd_options
- *
- * Prints a simple list of the options available to a command. This is intended
- * to be easily parsed for bash completion.
- */
-void list_cmd_options(FILE *ofp, struct poptOption *options)
-{
- int i;
- struct poptOption *option = NULL;
-
- for (i = 0; options[i].longName != NULL; i++) {
- option = &options[i];
-
- fprintf(ofp, "--%s\n", option->longName);
-
- if (isprint(option->shortName)) {
- fprintf(ofp, "-%c\n", option->shortName);
- }
- }
-}
-
-/*
- * Same as list_cmd_options, but for options specified for argpar.
- */
-void list_cmd_options_argpar(FILE *ofp, const struct argpar_opt_descr *options)
-{
- int i;
-
- for (i = 0; options[i].long_name != NULL; i++) {
- const struct argpar_opt_descr *option = &options[i];
-
- fprintf(ofp, "--%s\n", option->long_name);
-
- if (isprint(option->short_name)) {
- fprintf(ofp, "-%c\n", option->short_name);
- }
- }
-}
-
-/*
- * fls: returns the position of the most significant bit.
- * Returns 0 if no bit is set, else returns the position of the most
- * significant bit (from 1 to 32 on 32-bit, from 1 to 64 on 64-bit).
- */
-#if defined(__i386) || defined(__x86_64)
-static inline
-unsigned int fls_u32(uint32_t x)
-{
- int r;
-
- asm("bsrl %1,%0\n\t"
- "jnz 1f\n\t"
- "movl $-1,%0\n\t"
- "1:\n\t"
- : "=r" (r) : "rm" (x));
- return r + 1;
-}
-#define HAS_FLS_U32
-#endif
-
-#if defined(__x86_64) && defined(__LP64__)
-static inline
-unsigned int fls_u64(uint64_t x)
-{
- long r;
-
- asm("bsrq %1,%0\n\t"
- "jnz 1f\n\t"
- "movq $-1,%0\n\t"
- "1:\n\t"
- : "=r" (r) : "rm" (x));
- return r + 1;
-}
-#define HAS_FLS_U64
-#endif
-
-#ifndef HAS_FLS_U64
-static __attribute__((unused))
-unsigned int fls_u64(uint64_t x)
-{
- unsigned int r = 64;
-
- if (!x)
- return 0;
-
- if (!(x & 0xFFFFFFFF00000000ULL)) {
- x <<= 32;
- r -= 32;
- }
- if (!(x & 0xFFFF000000000000ULL)) {
- x <<= 16;
- r -= 16;
- }
- if (!(x & 0xFF00000000000000ULL)) {
- x <<= 8;
- r -= 8;
- }
- if (!(x & 0xF000000000000000ULL)) {
- x <<= 4;
- r -= 4;
- }
- if (!(x & 0xC000000000000000ULL)) {
- x <<= 2;
- r -= 2;
- }
- if (!(x & 0x8000000000000000ULL)) {
- x <<= 1;
- r -= 1;
- }
- return r;
-}
-#endif
-
-#ifndef HAS_FLS_U32
-static __attribute__((unused))
-unsigned int fls_u32(uint32_t x)
-{
- unsigned int r = 32;
-
- if (!x)
- return 0;
- if (!(x & 0xFFFF0000U)) {
- x <<= 16;
- r -= 16;
- }
- if (!(x & 0xFF000000U)) {
- x <<= 8;
- r -= 8;
- }
- if (!(x & 0xF0000000U)) {
- x <<= 4;
- r -= 4;
- }
- if (!(x & 0xC0000000U)) {
- x <<= 2;
- r -= 2;
- }
- if (!(x & 0x80000000U)) {
- x <<= 1;
- r -= 1;
- }
- return r;
-}
-#endif
-
-static
-unsigned int fls_ulong(unsigned long x)
-{
-#if (CAA_BITS_PER_LONG == 32)
- return fls_u32(x);
-#else
- return fls_u64(x);
-#endif
-}
-
-/*
- * Return the minimum order for which x <= (1UL << order).
- * Return -1 if x is 0.
- */
-int get_count_order_u32(uint32_t x)
-{
- if (!x)
- return -1;
-
- return fls_u32(x - 1);
-}
-
-/*
- * Return the minimum order for which x <= (1UL << order).
- * Return -1 if x is 0.
- */
-int get_count_order_u64(uint64_t x)
-{
- if (!x)
- return -1;
-
- return fls_u64(x - 1);
-}
-
-/*
- * Return the minimum order for which x <= (1UL << order).
- * Return -1 if x is 0.
- */
-int get_count_order_ulong(unsigned long x)
-{
- if (!x)
- return -1;
-
- return fls_ulong(x - 1);
-}
-
-const char *get_event_type_str(enum lttng_event_type type)
-{
- const char *str_event_type;
-
- switch (type) {
- case LTTNG_EVENT_ALL:
- str_event_type = str_all;
- break;
- case LTTNG_EVENT_TRACEPOINT:
- str_event_type = str_tracepoint;
- break;
- case LTTNG_EVENT_SYSCALL:
- str_event_type = str_syscall;
- break;
- case LTTNG_EVENT_PROBE:
- str_event_type = str_probe;
- break;
- case LTTNG_EVENT_USERSPACE_PROBE:
- str_event_type = str_userspace_probe;
- break;
- case LTTNG_EVENT_FUNCTION:
- str_event_type = str_function;
- break;
- default:
- /* Should not have an unknown event type or else define it. */
- abort();
- }
-
- return str_event_type;
-}
-
-/*
- * Spawn a lttng relayd daemon by forking and execv.
- */
-int spawn_relayd(const char *pathname, int port)
-{
- int ret = 0;
- pid_t pid;
- char url[255];
-
- if (!port) {
- port = DEFAULT_NETWORK_VIEWER_PORT;
- }
-
- ret = snprintf(url, sizeof(url), "tcp://localhost:%d", port);
- if (ret < 0) {
- goto end;
- }
-
- MSG("Spawning a relayd daemon");
- pid = fork();
- if (pid == 0) {
- /*
- * Spawn session daemon and tell
- * it to signal us when ready.
- */
- execlp(pathname, "lttng-relayd", "-L", url, NULL);
- /* execlp only returns if error happened */
- if (errno == ENOENT) {
- ERR("No relayd found. Use --relayd-path.");
- } else {
- PERROR("execlp");
- }
- kill(getppid(), SIGTERM); /* wake parent */
- exit(EXIT_FAILURE);
- } else if (pid > 0) {
- goto end;
- } else {
- PERROR("fork");
- ret = -1;
- goto end;
- }
-
-end:
- return ret;
-}
-
-/*
- * Check if relayd is alive.
- *
- * Return 1 if found else 0 if NOT found. Negative value on error.
- */
-int check_relayd(void)
-{
- int ret, fd;
- struct sockaddr_in sin;
-
- fd = socket(AF_INET, SOCK_STREAM, 0);
- if (fd < 0) {
- PERROR("socket check relayd");
- ret = -1;
- goto error_socket;
- }
-
- sin.sin_family = AF_INET;
- sin.sin_port = htons(DEFAULT_NETWORK_VIEWER_PORT);
- ret = inet_pton(sin.sin_family, "127.0.0.1", &sin.sin_addr);
- if (ret < 1) {
- PERROR("inet_pton check relayd");
- ret = -1;
- goto error;
- }
-
- /*
- * A successful connect means the relayd exists thus returning 0 else a
- * negative value means it does NOT exists.
- */
- ret = connect(fd, (struct sockaddr *) &sin, sizeof(sin));
- if (ret < 0) {
- /* Not found. */
- ret = 0;
- } else {
- /* Already spawned. */
- ret = 1;
- }
-
-error:
- if (close(fd) < 0) {
- PERROR("close relayd fd");
- }
-error_socket:
- return ret;
-}
-
-int print_missing_or_multiple_domains(unsigned int domain_count,
- bool include_agent_domains)
-{
- int ret = 0;
-
- if (domain_count == 0) {
- ERR("Please specify a domain (--kernel/--userspace%s).",
- include_agent_domains ?
- "/--jul/--log4j/--python" :
- "");
- ret = -1;
- } else if (domain_count > 1) {
- ERR("Only one domain must be specified.");
- ret = -1;
- }
-
- return ret;
-}
-
-/*
- * Get the discarded events and lost packet counts.
- */
-void print_session_stats(const char *session_name)
-{
- char *str;
- const int ret = get_session_stats_str(session_name, &str);
-
- if (ret >= 0 && str) {
- MSG("%s", str);
- free(str);
- }
-}
-
-int get_session_stats_str(const char *session_name, char **out_str)
-{
- int count, nb_domains, domain_idx, channel_idx, session_idx, ret;
- struct lttng_domain *domains = NULL;
- struct lttng_channel *channels = NULL;
- uint64_t discarded_events_total = 0, lost_packets_total = 0;
- struct lttng_session *sessions = NULL;
- const struct lttng_session *selected_session = NULL;
- char *stats_str = NULL;
- bool print_discarded_events = false, print_lost_packets = false;
-
- count = lttng_list_sessions(&sessions);
- if (count < 1) {
- ERR("Failed to retrieve session descriptions while printing session statistics.");
- ret = -1;
- goto end;
- }
-
- /* Identify the currently-selected sessions. */
- for (session_idx = 0; session_idx < count; session_idx++) {
- if (!strcmp(session_name, sessions[session_idx].name)) {
- selected_session = &sessions[session_idx];
- break;
- }
- }
- if (!selected_session) {
- ERR("Failed to retrieve session \"%s\" description while printing session statistics.", session_name);
- ret = -1;
- goto end;
- }
-
- nb_domains = lttng_list_domains(session_name, &domains);
- if (nb_domains < 0) {
- ret = -1;
- goto end;
- }
- for (domain_idx = 0; domain_idx < nb_domains; domain_idx++) {
- struct lttng_handle *handle = lttng_create_handle(session_name,
- &domains[domain_idx]);
-
- if (!handle) {
- ERR("Failed to create session handle while printing session statistics.");
- ret = -1;
- goto end;
- }
-
- free(channels);
- channels = NULL;
- count = lttng_list_channels(handle, &channels);
- for (channel_idx = 0; channel_idx < count; channel_idx++) {
- uint64_t discarded_events = 0, lost_packets = 0;
- struct lttng_channel *channel = &channels[channel_idx];
-
- ret = lttng_channel_get_discarded_event_count(channel,
- &discarded_events);
- if (ret) {
- ERR("Failed to retrieve discarded event count from channel %s",
- channel->name);
- }
-
- ret = lttng_channel_get_lost_packet_count(channel,
- &lost_packets);
- if (ret) {
- ERR("Failed to retrieve lost packet count from channel %s",
- channel->name);
- }
-
- discarded_events_total += discarded_events;
- lost_packets_total += lost_packets;
- }
- lttng_destroy_handle(handle);
- }
-
- print_discarded_events = discarded_events_total > 0 &&
- !selected_session->snapshot_mode;
- print_lost_packets = lost_packets_total > 0 &&
- !selected_session->snapshot_mode;
-
- if (print_discarded_events && print_lost_packets) {
- ret = asprintf(&stats_str,
- "Warning: %" PRIu64
- " events were discarded and %" PRIu64
- " packets were lost, please refer to "
- "the documentation on channel configuration.",
- discarded_events_total, lost_packets_total);
- } else if (print_discarded_events) {
- ret = asprintf(&stats_str,
- "Warning: %" PRIu64
- " events were discarded, please refer to "
- "the documentation on channel configuration.",
- discarded_events_total);
- } else if (print_lost_packets) {
- ret = asprintf(&stats_str,
- "Warning: %" PRIu64
- " packets were lost, please refer to "
- "the documentation on channel configuration.",
- lost_packets_total);
- } else {
- ret = 0;
- }
-
- if (ret < 0) {
- ERR("Failed to format lost packet and discarded events statistics");
- } else {
- *out_str = stats_str;
- ret = 0;
- }
-end:
- free(sessions);
- free(channels);
- free(domains);
- return ret;
-}
-
-int show_cmd_help(const char *cmd_name, const char *help_msg)
-{
- int ret;
- char page_name[32];
-
- ret = sprintf(page_name, "lttng-%s", cmd_name);
- LTTNG_ASSERT(ret > 0 && ret < 32);
- ret = utils_show_help(1, page_name, help_msg);
- if (ret && !help_msg) {
- ERR("Cannot view man page `lttng-%s(1)`", cmd_name);
- perror("exec");
- }
-
- return ret;
-}
-
-int print_trace_archive_location(
- const struct lttng_trace_archive_location *location,
- const char *session_name)
-{
- int ret = 0;
- enum lttng_trace_archive_location_type location_type;
- enum lttng_trace_archive_location_status status;
- bool printed_location = false;
-
- location_type = lttng_trace_archive_location_get_type(location);
-
- _MSG("Trace chunk archive for session %s is now readable",
- session_name);
- switch (location_type) {
- case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_LOCAL:
- {
- const char *absolute_path;
-
- status = lttng_trace_archive_location_local_get_absolute_path(
- location, &absolute_path);
- if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
- ret = -1;
- goto end;
- }
- MSG(" at %s", absolute_path);
- printed_location = true;
- break;
- }
- case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_RELAY:
- {
- uint16_t control_port, data_port;
- const char *host, *relative_path, *protocol_str;
- enum lttng_trace_archive_location_relay_protocol_type protocol;
-
- /* Fetch all relay location parameters. */
- status = lttng_trace_archive_location_relay_get_protocol_type(
- location, &protocol);
- if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_archive_location_relay_get_host(
- location, &host);
- if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_archive_location_relay_get_control_port(
- location, &control_port);
- if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_archive_location_relay_get_data_port(
- location, &data_port);
- if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_archive_location_relay_get_relative_path(
- location, &relative_path);
- if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- switch (protocol) {
- case LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP:
- protocol_str = "tcp";
- break;
- default:
- protocol_str = "unknown";
- break;
- }
-
- MSG(" on relay %s://%s/%s [control port %" PRIu16 ", data port %"
- PRIu16 "]", protocol_str, host,
- relative_path, control_port, data_port);
- printed_location = true;
- break;
- }
- default:
- break;
- }
-end:
- if (!printed_location) {
- MSG(" at an unknown location");
- }
- return ret;
-}
projects / lttng-tools.git / blobdiff