*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
*/
#define _GNU_SOURCE
+#include <inttypes.h>
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <assert.h>
-#include "cmd.h"
+#include "../cmd.h"
static int opt_pid;
-static int opt_channels;
+static int opt_userspace;
+static char *opt_cmd_name;
+static int opt_kernel;
+static char *opt_channel;
+static int opt_domain;
+
+const char *indent4 = " ";
+const char *indent6 = " ";
+const char *indent8 = " ";
enum {
OPT_HELP = 1,
- OPT_EVENTS,
- OPT_KERNEL,
- OPT_APPS,
- OPT_SESSIONS,
- OPT_CHANNEL,
+ OPT_USERSPACE,
};
+static struct lttng_handle *handle;
+
static struct poptOption long_options[] = {
/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
- {"events", 'e', POPT_ARG_NONE, 0, OPT_EVENTS, 0, 0},
- {"kernel", 'k', POPT_ARG_NONE, 0, OPT_KERNEL, 0, 0},
- {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
- {"apps", 'a', POPT_ARG_NONE, 0, OPT_APPS, 0, 0},
- {"session", 's', POPT_ARG_NONE, 0, OPT_SESSIONS, 0, 0},
- {"channel", 'c', POPT_ARG_VAL, &opt_channels, 1, 0, 0},
+ {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
+ {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
+ {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
+ {"channel", 'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0},
+ {"domain", 'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0},
{0, 0, 0, 0, 0, 0, 0}
};
*/
static void usage(FILE *ofp)
{
- fprintf(ofp, "usage: lttng list [options] [<executable>]\n");
+ fprintf(ofp, "usage: lttng list [[-k] [-u] [-p PID] [SESSION [<options>]]]\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "With no arguments, list available tracing session(s)\n");
fprintf(ofp, "\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " -e, --events List all available instrumentation\n");
- fprintf(ofp, " -k, --kernel List kernel instrumentation\n");
- fprintf(ofp, " -p, --pid PID List user-space instrumentation by PID\n");
- fprintf(ofp, " -a, --apps List traceable user-space applications/pids\n");
- fprintf(ofp, " -s, --sessions List tracing session\n");
+ fprintf(ofp, "With -k alone, list available kernel events\n");
+ fprintf(ofp, "With -u alone, list available userspace events\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, " -h, --help Show this help\n");
+ fprintf(ofp, " -k, --kernel Select kernel domain\n");
+ fprintf(ofp, " -u, --userspace Select user-space domain.\n");
+ fprintf(ofp, " -p, --pid PID List user-space events by PID\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "Options:\n");
+ fprintf(ofp, " -c, --channel NAME List details of a channel\n");
+ fprintf(ofp, " -d, --domain List available domain(s)\n");
fprintf(ofp, "\n");
}
/*
- * get_cmdline_by_pid
- *
- * Get command line from /proc for a specific pid.
+ * Get command line from /proc for a specific pid.
*
- * On success, return an allocated string pointer pointing to the proc
- * cmdline.
- * On error, return NULL.
+ * On success, return an allocated string pointer to the proc cmdline.
+ * On error, return NULL.
*/
static char *get_cmdline_by_pid(pid_t pid)
{
/* Caller must free() *cmdline */
cmdline = malloc(PATH_MAX);
ret = fread(cmdline, 1, PATH_MAX, fp);
+ if (ret < 0) {
+ perror("fread proc list");
+ }
fclose(fp);
end:
return cmdline;
}
+static
+const char *active_string(int value)
+{
+ switch (value) {
+ case 0: return " [inactive]";
+ case 1: return " [active]";
+ case -1: return "";
+ default: return NULL;
+ }
+}
+
+static
+const char *enabled_string(int value)
+{
+ switch (value) {
+ case 0: return " [disabled]";
+ case 1: return " [enabled]";
+ case -1: return "";
+ default: return NULL;
+ }
+}
+
+static
+const char *loglevel_string_pre(const char *loglevel)
+{
+ if (loglevel[0] == '\0') {
+ return "";
+ } else {
+ return " (loglevel: ";
+ }
+}
+
+static
+const char *loglevel_string_post(const char *loglevel)
+{
+ if (loglevel[0] == '\0') {
+ return "";
+ } else {
+ return ")";
+ }
+}
+
/*
- * list_kernel
- *
- * Ask for all trace events in the kernel and pretty print them.
+ * Pretty print single event.
*/
-static int list_kernel(void)
+static void print_events(struct lttng_event *event)
{
- int ret, pos, size;
- char *event_list, *event, *ptr;
- struct lttng_domain dom;
+ switch (event->type) {
+ case LTTNG_EVENT_TRACEPOINT:
+ {
+ char ll_value[LTTNG_SYMBOL_NAME_LEN] = "";
+
+ if (event->loglevel[0] != '\0') {
+ int ret;
+
+ ret = snprintf(ll_value, LTTNG_SYMBOL_NAME_LEN,
+ ", %lld", (long long) event->loglevel_value);
+ if (ret < 0)
+ ERR("snprintf error");
+ }
+ MSG("%s%s%s%s%s%s (type: tracepoint)%s", indent6,
+ event->name,
+ loglevel_string_pre(event->loglevel),
+ event->loglevel,
+ ll_value,
+ loglevel_string_post(event->loglevel),
+ enabled_string(event->enabled));
+ break;
+ }
+ case LTTNG_EVENT_PROBE:
+ MSG("%s%s (type: probe)%s", indent6,
+ event->name, enabled_string(event->enabled));
+ if (event->attr.probe.addr != 0) {
+ MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr);
+ } else {
+ MSG("%soffset: 0x%" PRIx64, indent8, event->attr.probe.offset);
+ MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name);
+ }
+ break;
+ case LTTNG_EVENT_FUNCTION:
+ case LTTNG_EVENT_FUNCTION_ENTRY:
+ MSG("%s%s (type: function)%s", indent6,
+ event->name, enabled_string(event->enabled));
+ MSG("%ssymbol: \"%s\"", indent8, event->attr.ftrace.symbol_name);
+ break;
+ case LTTNG_EVENT_SYSCALL:
+ MSG("%s (type: syscall)%s", indent6,
+ enabled_string(event->enabled));
+ break;
+ case LTTNG_EVENT_NOOP:
+ MSG("%s (type: noop)%s", indent6,
+ enabled_string(event->enabled));
+ break;
+ case LTTNG_EVENT_TRACEPOINT_LOGLEVEL:
+ MSG("%s%s (type: tracepoint loglevel)%s", indent6,
+ event->name,
+ enabled_string(event->enabled));
+ break;
+ case LTTNG_EVENT_ALL:
+ /* We should never have "all" events in list. */
+ assert(0);
+ break;
+ }
+}
- DBG("Getting all tracing events");
+/*
+ * Ask session daemon for all user space tracepoints available.
+ */
+static int list_ust_events(void)
+{
+ int i, size;
+ struct lttng_domain domain;
+ struct lttng_handle *handle;
+ struct lttng_event *event_list;
+ pid_t cur_pid = 0;
- dom.type = LTTNG_DOMAIN_KERNEL;
+ DBG("Getting UST tracing events");
- ret = lttng_list_events(&dom, &event_list);
- if (ret < 0) {
- ERR("Unable to list kernel instrumentation");
- return ret;
+ domain.type = LTTNG_DOMAIN_UST;
+
+ handle = lttng_create_handle(NULL, &domain);
+ if (handle == NULL) {
+ goto error;
+ }
+
+ size = lttng_list_tracepoints(handle, &event_list);
+ if (size < 0) {
+ ERR("Unable to list UST events");
+ return size;
+ }
+
+ MSG("UST events:\n-------------");
+
+ if (size == 0) {
+ MSG("None");
+ }
+
+ for (i = 0; i < size; i++) {
+ if (cur_pid != event_list[i].pid) {
+ cur_pid = event_list[i].pid;
+ MSG("\nPID: %d - Name: %s", cur_pid, get_cmdline_by_pid(cur_pid));
+ }
+ print_events(&event_list[i]);
+ }
+
+ MSG("");
+
+ free(event_list);
+
+ return CMD_SUCCESS;
+
+error:
+ return -1;
+}
+
+/*
+ * Ask for all trace events in the kernel and pretty print them.
+ */
+static int list_kernel_events(void)
+{
+ int i, size;
+ struct lttng_domain domain;
+ struct lttng_handle *handle;
+ struct lttng_event *event_list;
+
+ DBG("Getting kernel tracing events");
+
+ domain.type = LTTNG_DOMAIN_KERNEL;
+
+ handle = lttng_create_handle(NULL, &domain);
+ if (handle == NULL) {
+ goto error;
+ }
+
+ size = lttng_list_tracepoints(handle, &event_list);
+ if (size < 0) {
+ ERR("Unable to list kernel events");
+ return size;
}
- MSG("Kernel tracepoints:\n-------------");
+ MSG("Kernel events:\n-------------");
- ptr = event_list;
- while ((size = sscanf(ptr, "event { name = %m[^;]; };%n\n", &event, &pos)) == 1) {
- MSG(" - %s", event);
- /* Move pointer to the next line */
- ptr += pos + 1;
- free(event);
+ for (i = 0; i < size; i++) {
+ print_events(&event_list[i]);
}
+ MSG("");
+
free(event_list);
return CMD_SUCCESS;
+
+error:
+ return -1;
}
/*
- * list_sessions
- *
- * Get the list of available sessions from the session daemon and print it to
- * user.
+ * List events of channel of session and domain.
*/
-static int list_sessions(void)
+static int list_events(const char *channel_name)
{
int ret, count, i;
- struct lttng_session *sessions;
+ struct lttng_event *events = NULL;
- count = lttng_list_sessions(&sessions);
- DBG("Session count %d", count);
+ count = lttng_list_events(handle, channel_name, &events);
if (count < 0) {
ret = count;
goto error;
}
- MSG("Available sessions:");
+ MSG("\n%sEvents:", indent4);
+ if (count == 0) {
+ MSG("%sNone\n", indent6);
+ goto end;
+ }
+
for (i = 0; i < count; i++) {
- MSG(" %d) %s (%s)", i+1, sessions[i].name, sessions[i].path);
+ print_events(&events[i]);
}
- free(sessions);
+ MSG("");
- return CMD_SUCCESS;
+end:
+ if (events) {
+ free(events);
+ }
+ ret = CMD_SUCCESS;
error:
return ret;
}
/*
- * list_apps
+ * Pretty print channel
+ */
+static void print_channel(struct lttng_channel *channel)
+{
+ MSG("- %s:%s\n", channel->name, enabled_string(channel->enabled));
+
+ MSG("%sAttributes:", indent4);
+ MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite);
+ MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size);
+ MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf);
+ MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval);
+ MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval);
+ switch (channel->attr.output) {
+ case LTTNG_EVENT_SPLICE:
+ MSG("%soutput: splice()", indent6);
+ break;
+ case LTTNG_EVENT_MMAP:
+ MSG("%soutput: mmap()", indent6);
+ break;
+ }
+}
+
+/*
+ * List channel(s) of session and domain.
*
- * Get the UST traceable pid list and print them to the user.
+ * If channel_name is NULL, all channels are listed.
*/
-static int list_apps(void)
+static int list_channels(const char *channel_name)
{
- int i, ret, count;
- pid_t *pids;
- char *cmdline;
+ int count, i, ret = CMD_SUCCESS;
+ unsigned int chan_found = 0;
+ struct lttng_channel *channels = NULL;
+
+ DBG("Listing channel(s) (%s)", channel_name ? : "<all>");
- count = -1;
- //count = lttng_ust_list_traceable_apps(&pids);
+ count = lttng_list_channels(handle, &channels);
if (count < 0) {
ret = count;
goto error;
+ } else if (count == 0) {
+ MSG("No channel found");
+ goto end;
}
- MSG("LTTng UST traceable application [name (pid)]:");
- for (i=0; i < count; i++) {
- cmdline = get_cmdline_by_pid(pids[i]);
- if (cmdline == NULL) {
- MSG("\t(not running) (%d)", pids[i]);
- continue;
+ if (channel_name == NULL) {
+ MSG("Channels:\n-------------");
+ }
+
+ for (i = 0; i < count; i++) {
+ if (channel_name != NULL) {
+ if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) {
+ chan_found = 1;
+ } else {
+ continue;
+ }
+ }
+ print_channel(&channels[i]);
+
+ /* Listing events per channel */
+ ret = list_events(channels[i].name);
+ if (ret < 0) {
+ MSG("%s", lttng_strerror(ret));
+ }
+
+ if (chan_found) {
+ break;
}
- MSG("\t%s (%d)", cmdline, pids[i]);
- free(cmdline);
}
- /* Allocated by lttng_ust_list_apps() */
- free(pids);
+ if (!chan_found && channel_name != NULL) {
+ MSG("Channel %s not found", channel_name);
+ }
- return CMD_SUCCESS;
+end:
+ free(channels);
+ ret = CMD_SUCCESS;
error:
return ret;
}
/*
- * list_pid
+ * List available tracing session. List only basic information.
*
- * List all instrumentation for a specific pid
+ * If session_name is NULL, all sessions are listed.
*/
-/*
-static int list_pid(int pid)
+static int list_sessions(const char *session_name)
{
- int ret;
+ int ret, count, i;
+ unsigned int session_found = 0;
+ struct lttng_session *sessions;
+
+ count = lttng_list_sessions(&sessions);
+ DBG("Session count %d", count);
+ if (count < 0) {
+ ret = count;
+ goto error;
+ }
+
+ if (session_name == NULL) {
+ MSG("Available tracing sessions:");
+ }
+
+ for (i = 0; i < count; i++) {
+ if (session_name != NULL) {
+ if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
+ session_found = 1;
+ MSG("Tracing session %s:%s", session_name, active_string(sessions[i].enabled));
+ MSG("%sTrace path: %s\n", indent4, sessions[i].path);
+ break;
+ }
+ continue;
+ }
+
+ MSG(" %d) %s (%s)%s", i + 1, sessions[i].name, sessions[i].path, active_string(sessions[i].enabled));
+
+ if (session_found) {
+ break;
+ }
+ }
+
+ free(sessions);
+
+ if (!session_found && session_name != NULL) {
+ MSG("Session %s not found", session_name);
+ }
+
+ if (session_name == NULL) {
+ MSG("\nUse lttng list <session_name> for more details");
+ }
return CMD_SUCCESS;
error:
return ret;
}
-*/
/*
- * list_executable
- *
- * List all instrumentation for an executable on the system
+ * List available domain(s) for a session.
*/
-/*
-static int list_executable(char *name)
+static int list_domains(void)
{
+ int i, count, ret = CMD_SUCCESS;
+ struct lttng_domain *domains = NULL;
+
+ MSG("Domains:\n-------------");
+
+ count = lttng_list_domains(handle, &domains);
+ if (count < 0) {
+ ret = count;
+ goto error;
+ } else if (count == 0) {
+ MSG(" None");
+ goto end;
+ }
+
+ for (i = 0; i < count; i++) {
+ switch (domains[i].type) {
+ case LTTNG_DOMAIN_KERNEL:
+ MSG(" - Kernel");
+ break;
+ case LTTNG_DOMAIN_UST:
+ MSG(" - UST global");
+ break;
+ default:
+ break;
+ }
+ }
+
+end:
+ free(domains);
+
+error:
+ return ret;
}
-*/
/*
- * cmd_list
- *
- * The 'list <options>' first level command
+ * The 'list <options>' first level command
*/
int cmd_list(int argc, const char **argv)
{
- int opt, ret = CMD_SUCCESS;
- const char *command_name;
+ int opt, i, ret = CMD_SUCCESS;
+ int nb_domain;
+ const char *session_name;
static poptContext pc;
+ struct lttng_domain domain;
+ struct lttng_domain *domains = NULL;
- if (argc < 2) {
+ if (argc < 1) {
usage(stderr);
goto end;
}
case OPT_HELP:
usage(stderr);
goto end;
- case OPT_EVENTS:
- ret = CMD_NOT_IMPLEMENTED;
- goto end;
- case OPT_APPS:
- ret = list_apps();
- break;
- case OPT_KERNEL:
- ret = list_kernel();
- break;
- case OPT_SESSIONS:
- ret = list_sessions();
+ case OPT_USERSPACE:
+ opt_userspace = 1;
break;
default:
usage(stderr);
}
if (opt_pid != 0) {
- //ret = list_pid(pid);
- ret = CMD_NOT_IMPLEMENTED;
+ MSG("*** Userspace tracing not implemented for PID ***\n");
}
- command_name = poptGetArg(pc);
- if (command_name != NULL) {
- // ret = list_executable(command_name);
- ret = CMD_NOT_IMPLEMENTED;
+ /* Get session name (trailing argument) */
+ session_name = poptGetArg(pc);
+ DBG2("Session name: %s", session_name);
+
+ if (opt_kernel) {
+ domain.type = LTTNG_DOMAIN_KERNEL;
+ } else if (opt_userspace) {
+ DBG2("Listing userspace global domain");
+ domain.type = LTTNG_DOMAIN_UST;
+ }
+
+ handle = lttng_create_handle(session_name, &domain);
+ if (handle == NULL) {
+ goto end;
+ }
+
+ if (session_name == NULL) {
+ if (!opt_kernel && !opt_userspace) {
+ ret = list_sessions(NULL);
+ if (ret < 0) {
+ goto end;
+ }
+ }
+ if (opt_kernel) {
+ ret = list_kernel_events();
+ if (ret < 0) {
+ goto end;
+ }
+ }
+ if (opt_userspace) {
+ ret = list_ust_events();
+ if (ret < 0) {
+ goto end;
+ }
+ }
+ } else {
+ /* List session attributes */
+ ret = list_sessions(session_name);
+ if (ret < 0) {
+ goto end;
+ }
+
+ /* Domain listing */
+ if (opt_domain) {
+ ret = list_domains();
+ goto end;
+ }
+
+ if (opt_kernel) {
+ /* Channel listing */
+ ret = list_channels(opt_channel);
+ if (ret < 0) {
+ goto end;
+ }
+ } else {
+ /* We want all domain(s) */
+ nb_domain = lttng_list_domains(handle, &domains);
+ if (nb_domain < 0) {
+ ret = nb_domain;
+ goto end;
+ }
+
+ for (i = 0; i < nb_domain; i++) {
+ switch (domains[i].type) {
+ case LTTNG_DOMAIN_KERNEL:
+ MSG("=== Domain: Kernel ===\n");
+ break;
+ case LTTNG_DOMAIN_UST:
+ MSG("=== Domain: UST global ===\n");
+ break;
+ default:
+ MSG("=== Domain: Unimplemented ===\n");
+ break;
+ }
+
+ /* Clean handle before creating a new one */
+ lttng_destroy_handle(handle);
+
+ handle = lttng_create_handle(session_name, &domains[i]);
+ if (handle == NULL) {
+ goto end;
+ }
+
+ ret = list_channels(opt_channel);
+ if (ret < 0) {
+ goto end;
+ }
+ }
+ }
}
end:
+ if (domains) {
+ free(domains);
+ }
+ lttng_destroy_handle(handle);
+
return ret;
}
projects / lttng-tools.git / blobdiff