License header fixes
[lttng-tools.git] / src / bin / lttng / commands / enable_events.c
index 125c40fe0bd1c06d3e1409098b38bb5017ac8e88..278090f352c8295dd69341d30a5964afbde17940 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
@@ -102,17 +101,17 @@ static void usage(FILE *ofp)
        fprintf(ofp, "\n");
        fprintf(ofp, "  -h, --help               Show this help\n");
        fprintf(ofp, "      --list-options       Simple listing of options\n");
-       fprintf(ofp, "  -s, --session            Apply on session name\n");
-       fprintf(ofp, "  -c, --channel            Apply on this channel\n");
-       fprintf(ofp, "  -a, --all                Enable all tracepoints\n");
+       fprintf(ofp, "  -s, --session            Apply to session name\n");
+       fprintf(ofp, "  -c, --channel            Apply to this channel\n");
+       fprintf(ofp, "  -a, --all                Enable all tracepoints and syscalls\n");
        fprintf(ofp, "  -k, --kernel             Apply for the kernel tracer\n");
 #if 0
-       fprintf(ofp, "  -u, --userspace [CMD]    Apply for the user-space tracer\n");
+       fprintf(ofp, "  -u, --userspace [CMD]    Apply to the user-space tracer\n");
        fprintf(ofp, "                           If no CMD, the domain used is UST global\n");
        fprintf(ofp, "                           or else the domain is UST EXEC_NAME\n");
        fprintf(ofp, "  -p, --pid PID            If -u, apply to specific PID (domain: UST PID)\n");
 #else
-       fprintf(ofp, "  -u, --userspace          Apply for the user-space tracer\n");
+       fprintf(ofp, "  -u, --userspace          Apply to the user-space tracer\n");
 #endif
        fprintf(ofp, "\n");
        fprintf(ofp, "Event options:\n");
@@ -122,10 +121,6 @@ static void usage(FILE *ofp)
        fprintf(ofp, "                             e.g.:\n");
        fprintf(ofp, "                               \"*\"\n");
        fprintf(ofp, "                               \"app_component:na*\"\n");
-       fprintf(ofp, "    --loglevel name\n");
-       fprintf(ofp, "                           Tracepoint loglevel (range: 0 to loglevel)\n");
-       fprintf(ofp, "    --loglevel-only name\n");
-       fprintf(ofp, "                           Tracepoint loglevel (only this loglevel)\n");
        fprintf(ofp, "    --probe [addr | symbol | symbol+offset]\n");
        fprintf(ofp, "                           Dynamic probe.\n");
        fprintf(ofp, "                           Addr and offset can be octal (0NNN...),\n");
@@ -140,6 +135,33 @@ static void usage(FILE *ofp)
 #endif
        fprintf(ofp, "    --syscall              System call event\n");
        fprintf(ofp, "\n");
+       fprintf(ofp, "    --loglevel name\n");
+       fprintf(ofp, "                           Tracepoint loglevel range from 0 to loglevel\n");
+       fprintf(ofp, "    --loglevel-only name\n");
+       fprintf(ofp, "                           Tracepoint loglevel (only this loglevel)\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "                           The loglevel or loglevel-only options should be\n");
+       fprintf(ofp, "                           combined with a tracepoint name or tracepoint\n");
+       fprintf(ofp, "                           wildcard.\n");
+       fprintf(ofp, "                           Available loglevels:\n");
+       fprintf(ofp, "                                              (higher value is more verbose)\n");
+       fprintf(ofp, "                               TRACE_EMERG          = 0\n");
+       fprintf(ofp, "                               TRACE_ALERT          = 1\n");
+       fprintf(ofp, "                               TRACE_CRIT           = 2\n");
+       fprintf(ofp, "                               TRACE_ERR            = 3\n");
+       fprintf(ofp, "                               TRACE_WARNING        = 4\n");
+       fprintf(ofp, "                               TRACE_NOTICE         = 5\n");
+       fprintf(ofp, "                               TRACE_INFO           = 6\n");
+       fprintf(ofp, "                               TRACE_DEBUG_SYSTEM   = 7\n");
+       fprintf(ofp, "                               TRACE_DEBUG_PROGRAM  = 8\n");
+       fprintf(ofp, "                               TRACE_DEBUG_PROCESS  = 9\n");
+       fprintf(ofp, "                               TRACE_DEBUG_MODULE   = 10\n");
+       fprintf(ofp, "                               TRACE_DEBUG_UNIT     = 11\n");
+       fprintf(ofp, "                               TRACE_DEBUG_FUNCTION = 12\n");
+       fprintf(ofp, "                               TRACE_DEBUG_LINE     = 13\n");
+       fprintf(ofp, "                               TRACE_DEBUG          = 14\n");
+       fprintf(ofp, "                               (shortcuts such as \"system\" are allowed)\n");
+       fprintf(ofp, "\n");
 }
 
 /*
@@ -209,6 +231,55 @@ end:
        return ret;
 }
 
+/*
+ * Maps loglevel from string to value
+ */
+static
+int loglevel_str_to_value(const char *inputstr)
+{
+       int i = 0;
+       char str[LTTNG_SYMBOL_NAME_LEN];
+
+       while (inputstr[i] != '\0' && i < LTTNG_SYMBOL_NAME_LEN) {
+               str[i] = toupper(inputstr[i]);
+               i++;
+       }
+       str[i] = '\0';
+       if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) {
+               return LTTNG_LOGLEVEL_EMERG;
+       } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) {
+               return LTTNG_LOGLEVEL_ALERT;
+       } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) {
+               return LTTNG_LOGLEVEL_CRIT;
+       } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) {
+               return LTTNG_LOGLEVEL_ERR;
+       } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) {
+               return LTTNG_LOGLEVEL_WARNING;
+       } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) {
+               return LTTNG_LOGLEVEL_NOTICE;
+       } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) {
+               return LTTNG_LOGLEVEL_INFO;
+       } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) {
+               return LTTNG_LOGLEVEL_DEBUG_SYSTEM;
+       } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) {
+               return LTTNG_LOGLEVEL_DEBUG_PROGRAM;
+       } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) {
+               return LTTNG_LOGLEVEL_DEBUG_PROCESS;
+       } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) {
+               return LTTNG_LOGLEVEL_DEBUG_MODULE;
+       } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) {
+               return LTTNG_LOGLEVEL_DEBUG_UNIT;
+       } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) {
+               return LTTNG_LOGLEVEL_DEBUG_FUNCTION;
+       } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) {
+               return LTTNG_LOGLEVEL_DEBUG_LINE;
+       } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) {
+               return LTTNG_LOGLEVEL_DEBUG;
+       } else {
+               return -1;
+       }
+}
+
 /*
  * Enabling event using the lttng API.
  */
@@ -219,6 +290,9 @@ static int enable_events(char *session_name)
        struct lttng_event ev;
        struct lttng_domain dom;
 
+       memset(&ev, 0, sizeof(ev));
+       memset(&dom, 0, sizeof(dom));
+
        /* Create lttng domain */
        if (opt_kernel) {
                dom.type = LTTNG_DOMAIN_KERNEL;
@@ -251,9 +325,22 @@ static int enable_events(char *session_name)
                if (opt_kernel) {
                        ev.type = opt_event_type;
                        ev.name[0] = '\0';
+                       /* kernel loglevels not implemented */
+                       ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
                } else {
                        ev.type = LTTNG_EVENT_TRACEPOINT;
                        strcpy(ev.name, "*");
+                       ev.loglevel_type = opt_loglevel_type;
+                       if (opt_loglevel) {
+                               ev.loglevel = loglevel_str_to_value(opt_loglevel);
+                               if (ev.loglevel == -1) {
+                                       ERR("Unknown loglevel %s", opt_loglevel);
+                                       ret = -1;
+                                       goto error;
+                               }
+                       } else {
+                               ev.loglevel = -1;
+                       }
                }
 
                ret = lttng_enable_event(handle, &ev, channel_name);
@@ -263,8 +350,15 @@ static int enable_events(char *session_name)
 
                switch (opt_event_type) {
                case LTTNG_EVENT_TRACEPOINT:
-                       MSG("All %s tracepoints are enabled in channel %s",
-                               opt_kernel ? "kernel" : "UST", channel_name);
+                       if (opt_loglevel) {
+                               MSG("All %s tracepoints are enabled in channel %s for loglevel %s",
+                                       opt_kernel ? "kernel" : "UST", channel_name,
+                                       opt_loglevel);
+                       } else {
+                               MSG("All %s tracepoints are enabled in channel %s",
+                                       opt_kernel ? "kernel" : "UST", channel_name);
+
+                       }
                        break;
                case LTTNG_EVENT_SYSCALL:
                        if (opt_kernel) {
@@ -273,8 +367,14 @@ static int enable_events(char *session_name)
                        }
                        break;
                case LTTNG_EVENT_ALL:
-                       MSG("All %s events are enabled in channel %s",
-                               opt_kernel ? "kernel" : "UST", channel_name);
+                       if (opt_loglevel) {
+                               MSG("All %s events are enabled in channel %s for loglevel %s",
+                                       opt_kernel ? "kernel" : "UST", channel_name,
+                                       opt_loglevel);
+                       } else {
+                               MSG("All %s events are enabled in channel %s",
+                                       opt_kernel ? "kernel" : "UST", channel_name);
+                       }
                        break;
                default:
                        /*
@@ -341,8 +441,7 @@ static int enable_events(char *session_name)
                        }
 
                        /* kernel loglevels not implemented */
-                       ev.loglevel_type = opt_loglevel_type;
-                       ev.loglevel[0] = '\0';
+                       ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
                } else if (opt_userspace) {             /* User-space tracer action */
 #if 0
                        if (opt_cmd_name != NULL || opt_pid) {
@@ -352,8 +451,8 @@ static int enable_events(char *session_name)
                        }
 #endif
 
-                       DBG("Enabling UST event %s for channel %s", event_name,
-                                       channel_name);
+                       DBG("Enabling UST event %s for channel %s, loglevel %s", event_name,
+                                       channel_name, opt_loglevel ? : "<all>");
 
                        switch (opt_event_type) {
                        case LTTNG_EVENT_ALL:   /* Default behavior is tracepoint */
@@ -376,13 +475,18 @@ static int enable_events(char *session_name)
 
                        ev.loglevel_type = opt_loglevel_type;
                        if (opt_loglevel) {
-                               strncpy(ev.loglevel, opt_loglevel, LTTNG_SYMBOL_NAME_LEN);
-                               ev.loglevel[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
+                               ev.loglevel = loglevel_str_to_value(opt_loglevel);
+                               if (ev.loglevel == -1) {
+                                       ERR("Unknown loglevel %s", opt_loglevel);
+                                       ret = -1;
+                                       goto error;
+                               }
                        } else {
-                               ev.loglevel[0] = '\0';
+                               ev.loglevel = -1;
                        }
                } else {
                        ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
+                       ret = CMD_ERROR;
                        goto error;
                }
 
@@ -452,11 +556,11 @@ int cmd_enable_events(int argc, const char **argv)
                        opt_userspace = 1;
                        break;
                case OPT_LOGLEVEL:
-                       opt_loglevel_type = LTTNG_EVENT_LOGLEVEL;
+                       opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE;
                        opt_loglevel = poptGetOptArg(pc);
                        break;
                case OPT_LOGLEVEL_ONLY:
-                       opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_ONLY;
+                       opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE;
                        opt_loglevel = poptGetOptArg(pc);
                        break;
                case OPT_LIST_OPTIONS:
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