License header fixes
[lttng-tools.git] / src / bin / lttng / commands / list.c
index 3bac86ecdcd93220653c4119111dc542527d4a49..50d6114c3d166be10483b71974b6418cf6152494 100644 (file)
@@ -1,19 +1,18 @@
 /*
  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
  *
- * 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; only version 2
- * of the License.
+ * 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.
  *
  * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * 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
@@ -144,47 +143,43 @@ const char *enabled_string(int value)
        }
 }
 
-static
-const char *loglevel_string_pre(int loglevel)
-{
-       if (loglevel == -1) {
-               return "";
-       } else {
-               return " (loglevel: ";
-       }
-}
-
-static
-const char *loglevel_string_post(int loglevel)
-{
-       if (loglevel == -1) {
-               return "";
-       } else {
-               return ")";
-       }
-}
-
 static const char *loglevel_string(int value)
 {
        switch (value) {
-       case -1: return "";
-       case 0: return "TRACE_EMERG";
-       case 1: return "TRACE_ALERT";
-       case 2: return "TRACE_CRIT";
-       case 3: return "TRACE_ERR";
-       case 4: return "TRACE_WARNING";
-       case 5: return "TRACE_NOTICE";
-       case 6: return "TRACE_INFO";
-       case 7: return "TRACE_SYSTEM";
-       case 8: return "TRACE_PROGRAM";
-       case 9: return "TRACE_PROCESS";
-       case 10: return "TRACE_MODULE";
-       case 11: return "TRACE_UNIT";
-       case 12: return "TRACE_FUNCTION";
-       case 13: return "TRACE_DEFAULT";
-       case 14: return "TRACE_VERBOSE";
-       case 15: return "TRACE_DEBUG";
-       default: return "<<UNKNOWN>>";
+       case -1:
+               return "";
+       case LTTNG_LOGLEVEL_EMERG:
+               return "TRACE_EMERG";
+       case LTTNG_LOGLEVEL_ALERT:
+               return "TRACE_ALERT";
+       case LTTNG_LOGLEVEL_CRIT:
+               return "TRACE_CRIT";
+       case LTTNG_LOGLEVEL_ERR:
+               return "TRACE_ERR";
+       case LTTNG_LOGLEVEL_WARNING:
+               return "TRACE_WARNING";
+       case LTTNG_LOGLEVEL_NOTICE:
+               return "TRACE_NOTICE";
+       case LTTNG_LOGLEVEL_INFO:
+               return "TRACE_INFO";
+       case LTTNG_LOGLEVEL_DEBUG_SYSTEM:
+               return "TRACE_DEBUG_SYSTEM";
+       case LTTNG_LOGLEVEL_DEBUG_PROGRAM:
+               return "TRACE_DEBUG_PROGRAM";
+       case LTTNG_LOGLEVEL_DEBUG_PROCESS:
+               return "TRACE_DEBUG_PROCESS";
+       case LTTNG_LOGLEVEL_DEBUG_MODULE:
+               return "TRACE_DEBUG_MODULE";
+       case LTTNG_LOGLEVEL_DEBUG_UNIT:
+               return "TRACE_DEBUG_UNIT";
+       case LTTNG_LOGLEVEL_DEBUG_FUNCTION:
+               return "TRACE_DEBUG_FUNCTION";
+       case LTTNG_LOGLEVEL_DEBUG_LINE:
+               return "TRACE_DEBUG_LINE";
+       case LTTNG_LOGLEVEL_DEBUG:
+               return "TRACE_DEBUG";
+       default:
+               return "<<UNKNOWN>>";
        }
 }
 
@@ -196,13 +191,19 @@ static void print_events(struct lttng_event *event)
        switch (event->type) {
        case LTTNG_EVENT_TRACEPOINT:
        {
-               MSG("%s%s%s%s%d%s (type: tracepoint)%s", indent6,
+               if (event->loglevel != -1) {
+                       MSG("%s%s (loglevel: %s (%d)) (type: tracepoint)%s",
+                               indent6,
                                event->name,
-                               loglevel_string_pre(event->loglevel),
                                loglevel_string(event->loglevel),
                                event->loglevel,
-                               loglevel_string_post(event->loglevel),
                                enabled_string(event->enabled));
+               } else {
+                       MSG("%s%s (type: tracepoint)%s",
+                               indent6,
+                               event->name,
+                               enabled_string(event->enabled));
+               }
                break;
        }
        case LTTNG_EVENT_PROBE:
@@ -222,7 +223,7 @@ static void print_events(struct lttng_event *event)
                MSG("%ssymbol: \"%s\"", indent8, event->attr.ftrace.symbol_name);
                break;
        case LTTNG_EVENT_SYSCALL:
-               MSG("%s (type: syscall)%s", indent6,
+               MSG("%ssyscalls (type: syscall)%s", indent6,
                                enabled_string(event->enabled));
                break;
        case LTTNG_EVENT_NOOP:
@@ -247,6 +248,8 @@ static int list_ust_events(void)
        struct lttng_event *event_list;
        pid_t cur_pid = 0;
 
+       memset(&domain, 0, sizeof(domain));
+
        DBG("Getting UST tracing events");
 
        domain.type = LTTNG_DOMAIN_UST;
@@ -259,6 +262,7 @@ static int list_ust_events(void)
        size = lttng_list_tracepoints(handle, &event_list);
        if (size < 0) {
                ERR("Unable to list UST events");
+               lttng_destroy_handle(handle);
                return size;
        }
 
@@ -279,10 +283,12 @@ static int list_ust_events(void)
        MSG("");
 
        free(event_list);
+       lttng_destroy_handle(handle);
 
        return CMD_SUCCESS;
 
 error:
+       lttng_destroy_handle(handle);
        return -1;
 }
 
@@ -296,6 +302,8 @@ static int list_kernel_events(void)
        struct lttng_handle *handle;
        struct lttng_event *event_list;
 
+       memset(&domain, 0, sizeof(domain));
+
        DBG("Getting kernel tracing events");
 
        domain.type = LTTNG_DOMAIN_KERNEL;
@@ -308,6 +316,7 @@ static int list_kernel_events(void)
        size = lttng_list_tracepoints(handle, &event_list);
        if (size < 0) {
                ERR("Unable to list kernel events");
+               lttng_destroy_handle(handle);
                return size;
        }
 
@@ -321,9 +330,11 @@ static int list_kernel_events(void)
 
        free(event_list);
 
+       lttng_destroy_handle(handle);
        return CMD_SUCCESS;
 
 error:
+       lttng_destroy_handle(handle);
        return -1;
 }
 
@@ -463,6 +474,9 @@ static int list_sessions(const char *session_name)
        if (count < 0) {
                ret = count;
                goto error;
+       } else if (count == 0) {
+               MSG("Currently no available tracing session");
+               goto end;
        }
 
        if (session_name == NULL) {
@@ -480,7 +494,8 @@ static int list_sessions(const char *session_name)
                        continue;
                }
 
-               MSG("  %d) %s (%s)%s", i + 1, sessions[i].name, sessions[i].path, active_string(sessions[i].enabled));
+               MSG("  %d) %s (%s)%s", i + 1, sessions[i].name, sessions[i].path,
+                               active_string(sessions[i].enabled));
 
                if (session_found) {
                        break;
@@ -490,13 +505,16 @@ static int list_sessions(const char *session_name)
        free(sessions);
 
        if (!session_found && session_name != NULL) {
-               ERR("Session %s not found", session_name);
+               ERR("Session '%s' not found", session_name);
+               ret = CMD_ERROR;
+               goto error;
        }
 
        if (session_name == NULL) {
                MSG("\nUse lttng list <session_name> for more details");
        }
 
+end:
        return CMD_SUCCESS;
 
 error:
@@ -554,6 +572,8 @@ int cmd_list(int argc, const char **argv)
        struct lttng_domain domain;
        struct lttng_domain *domains = NULL;
 
+       memset(&domain, 0, sizeof(domain));
+
        if (argc < 1) {
                usage(stderr);
                ret = CMD_ERROR;
@@ -592,16 +612,18 @@ int cmd_list(int argc, const char **argv)
                domain.type = LTTNG_DOMAIN_UST;
        }
 
-       handle = lttng_create_handle(session_name, &domain);
-       if (handle == NULL) {
-               ret = CMD_FATAL;
-               goto end;
+       if (opt_kernel || opt_userspace) {
+               handle = lttng_create_handle(session_name, &domain);
+               if (handle == NULL) {
+                       ret = CMD_FATAL;
+                       goto end;
+               }
        }
 
        if (session_name == NULL) {
                if (!opt_kernel && !opt_userspace) {
                        ret = list_sessions(NULL);
-                       if (ret < 0) {
+                       if (ret != 0) {
                                goto end;
                        }
                }
@@ -620,7 +642,7 @@ int cmd_list(int argc, const char **argv)
        } else {
                /* List session attributes */
                ret = list_sessions(session_name);
-               if (ret < 0) {
+               if (ret != 0) {
                        goto end;
                }
 
@@ -658,7 +680,9 @@ int cmd_list(int argc, const char **argv)
                                }
 
                                /* Clean handle before creating a new one */
-                               lttng_destroy_handle(handle);
+                               if (handle) {
+                                       lttng_destroy_handle(handle);
+                               }
 
                                handle = lttng_create_handle(session_name, &domains[i]);
                                if (handle == NULL) {
@@ -678,7 +702,9 @@ end:
        if (domains) {
                free(domains);
        }
-       lttng_destroy_handle(handle);
+       if (handle) {
+               lttng_destroy_handle(handle);
+       }
 
        poptFreeContext(pc);
        return ret;
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