tests/unit/test_ust_data.c

   1 /*
   2  * Copyright (c)  2011 David Goulet <david.goulet@polymtl.ca>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * as published by the Free Software Foundation; only version 2
   7  * of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <assert.h>
  20 #include <errno.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25 #include <time.h>
  26 #include <urcu.h>
  27
  28 #include <lttng/lttng.h>
  29 #include <bin/lttng-sessiond/lttng-ust-abi.h>
  30 #include <common/defaults.h>
  31 #include <bin/lttng-sessiond/trace-ust.h>
  32 #include <bin/lttng-sessiond/ust-app.h>
  33 #include <bin/lttng-sessiond/notification-thread.h>
  34
  35 #include <tap/tap.h>
  36
  37 /* This path will NEVER be created in this test */
  38 #define PATH1 "/tmp/.test-junk-lttng"
  39
  40 #define RANDOM_STRING_LEN       11
  41
  42 /* Number of TAP tests in this file */
  43 #define NUM_TESTS 16
  44
  45 /* For error.h */
  46 int lttng_opt_quiet = 1;
  47 int lttng_opt_verbose;
  48 int lttng_opt_mi;
  49
  50 int ust_consumerd32_fd;
  51 int ust_consumerd64_fd;
  52
  53 /* Global variables required by sessiond objects being linked-in */
  54 struct lttng_ht *agent_apps_ht_by_sock;
  55 struct notification_thread_handle *notification_thread_handle;
  56
  57 static const char alphanum[] =
  58         "0123456789"
  59         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  60         "abcdefghijklmnopqrstuvwxyz";
  61 static char random_string[RANDOM_STRING_LEN];
  62
  63 static struct ltt_ust_session *usess;
  64 static struct lttng_domain dom;
  65
  66 /*
  67  * Return random string of 10 characters.
  68  * Not thread-safe.
  69  */
  70 static char *get_random_string(void)
  71 {
  72         int i;
  73
  74         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  75                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  76         }
  77
  78         random_string[RANDOM_STRING_LEN - 1] = '\0';
  79
  80         return random_string;
  81 }
  82
  83 static void test_create_one_ust_session(void)
  84 {
  85         dom.type = LTTNG_DOMAIN_UST;
  86
  87         usess = trace_ust_create_session(42);
  88         ok(usess != NULL, "Create UST session");
  89
  90         if (!usess) {
  91                 skip(1, "UST session is null");
  92                 return;
  93         }
  94
  95         ok(usess->id == 42 &&
  96            usess->active == 0 &&
  97            usess->domain_global.channels != NULL &&
  98            usess->uid == 0 &&
  99            usess->gid == 0,
 100            "Validate UST session");
 101
 102         trace_ust_destroy_session(usess);
 103 }
 104
 105 static void test_create_ust_channel(void)
 106 {
 107         struct ltt_ust_channel *uchan;
 108         struct lttng_channel attr;
 109         struct lttng_channel_extended extended;
 110
 111         memset(&attr, 0, sizeof(attr));
 112         memset(&extended, 0, sizeof(extended));
 113         attr.attr.extended.ptr = &extended;
 114
 115         ok(lttng_strncpy(attr.name, "channel0", sizeof(attr.name)) == 0,
 116                 "Validate channel name length");
 117         uchan = trace_ust_create_channel(&attr, LTTNG_DOMAIN_UST);
 118         ok(uchan != NULL, "Create UST channel");
 119
 120         if (!usess) {
 121                 skip(1, "UST session is null");
 122                 return;
 123         }
 124
 125         ok(uchan->enabled == 0 &&
 126            strncmp(uchan->name, "channel0", 8) == 0 &&
 127            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 128            uchan->ctx != NULL &&
 129            uchan->events != NULL &&
 130            uchan->attr.overwrite  == attr.attr.overwrite,
 131            "Validate UST channel");
 132
 133         trace_ust_destroy_channel(uchan);
 134 }
 135
 136 static void test_create_ust_event(void)
 137 {
 138         struct ltt_ust_event *event;
 139         struct lttng_event ev;
 140
 141         memset(&ev, 0, sizeof(ev));
 142         ok(lttng_strncpy(ev.name, get_random_string(),
 143                         LTTNG_SYMBOL_NAME_LEN) == 0,
 144                 "Validate string length");
 145         ev.type = LTTNG_EVENT_TRACEPOINT;
 146         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 147
 148         event = trace_ust_create_event(&ev, NULL, NULL, NULL, false);
 149
 150         ok(event != NULL, "Create UST event");
 151
 152         if (!event) {
 153                 skip(1, "UST event is null");
 154                 return;
 155         }
 156
 157         ok(event->enabled == 0 &&
 158            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 159            strcmp(event->attr.name, ev.name) == 0 &&
 160            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 161            "Validate UST event");
 162
 163         trace_ust_destroy_event(event);
 164 }
 165
 166 static void test_create_ust_event_exclusion(void)
 167 {
 168         struct ltt_ust_event *event;
 169         struct lttng_event ev;
 170         char *name;
 171         char *random_name;
 172         struct lttng_event_exclusion *exclusion;
 173         const int exclusion_count = 2;
 174
 175         memset(&ev, 0, sizeof(ev));
 176
 177         /* make a wildcarded event name */
 178         name = get_random_string();
 179         name[strlen(name) - 1] = '*';
 180         ok(lttng_strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN) == 0,
 181                 "Validate string length");
 182
 183         ev.type = LTTNG_EVENT_TRACEPOINT;
 184         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 185
 186         /* set up an exclusion set */
 187         exclusion = zmalloc(sizeof(*exclusion) +
 188                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 189         ok(exclusion != NULL, "Create UST exclusion");
 190         if (!exclusion) {
 191                 skip(4, "zmalloc failed");
 192                 goto end;
 193         }
 194
 195         exclusion->count = exclusion_count;
 196         random_name = get_random_string();
 197         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0), random_name,
 198                 LTTNG_SYMBOL_NAME_LEN);
 199         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1), random_name,
 200                 LTTNG_SYMBOL_NAME_LEN);
 201
 202         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 203         exclusion = NULL;
 204
 205         ok(!event, "Create UST event with identical exclusion names fails");
 206
 207         exclusion = zmalloc(sizeof(*exclusion) +
 208                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 209         ok(exclusion != NULL, "Create UST exclusion");
 210         if (!exclusion) {
 211                 skip(2, "zmalloc failed");
 212                 goto end;
 213         }
 214
 215         exclusion->count = exclusion_count;
 216         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0),
 217                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 218         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1),
 219                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 220
 221         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 222         ok(event != NULL, "Create UST event with different exclusion names");
 223
 224         if (!event) {
 225                 skip(1, "UST event with exclusion is null");
 226                 goto end;
 227         }
 228
 229         ok(event->enabled == 0 &&
 230            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 231            strcmp(event->attr.name, ev.name) == 0 &&
 232            event->exclusion != NULL &&
 233            event->exclusion->count == exclusion_count &&
 234            !memcmp(event->exclusion->names, exclusion->names,
 235                 LTTNG_SYMBOL_NAME_LEN * exclusion_count) &&
 236            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 237            "Validate UST event and exclusion");
 238
 239         trace_ust_destroy_event(event);
 240 end:
 241         return;
 242 }
 243
 244
 245 static void test_create_ust_context(void)
 246 {
 247         struct lttng_event_context ectx;
 248         struct ltt_ust_context *uctx;
 249
 250         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 251
 252         uctx = trace_ust_create_context(&ectx);
 253         ok(uctx != NULL, "Create UST context");
 254
 255         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 256            "Validate UST context");
 257         free(uctx);
 258 }
 259
 260 int main(int argc, char **argv)
 261 {
 262         plan_tests(NUM_TESTS);
 263
 264         diag("UST data structures unit test");
 265
 266         rcu_register_thread();
 267
 268         test_create_one_ust_session();
 269         test_create_ust_channel();
 270         test_create_ust_event();
 271         test_create_ust_context();
 272         test_create_ust_event_exclusion();
 273
 274         rcu_unregister_thread();
 275
 276         return exit_status();
 277 }