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
  34 #include <tap/tap.h>
  35
  36 /* This path will NEVER be created in this test */
  37 #define PATH1 "/tmp/.test-junk-lttng"
  38
  39 #define RANDOM_STRING_LEN       11
  40
  41 /* Number of TAP tests in this file */
  42 #define NUM_TESTS 16
  43
  44 /* For error.h */
  45 int lttng_opt_quiet = 1;
  46 int lttng_opt_verbose;
  47 int lttng_opt_mi;
  48
  49 int ust_consumerd32_fd;
  50 int ust_consumerd64_fd;
  51
  52 /* Global variable required by sessiond objects being linked-in */
  53 struct lttng_ht *agent_apps_ht_by_sock;
  54
  55 static const char alphanum[] =
  56         "0123456789"
  57         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  58         "abcdefghijklmnopqrstuvwxyz";
  59 static char random_string[RANDOM_STRING_LEN];
  60
  61 /*
  62  * Return random string of 10 characters.
  63  * Not thread-safe.
  64  */
  65 static char *get_random_string(void)
  66 {
  67         int i;
  68
  69         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  70                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  71         }
  72
  73         random_string[RANDOM_STRING_LEN - 1] = '\0';
  74
  75         return random_string;
  76 }
  77
  78 static void test_create_one_ust_session(void)
  79 {
  80         struct ltt_ust_session *usess =
  81                 trace_ust_create_session(42);
  82
  83         ok(usess != NULL, "Create UST session");
  84
  85         if (!usess) {
  86                 skip(1, "UST session is null");
  87                 return;
  88         }
  89
  90         ok(usess->id == 42 &&
  91            usess->active == 0 &&
  92            usess->domain_global.channels != NULL &&
  93            usess->uid == 0 &&
  94            usess->gid == 0,
  95            "Validate UST session");
  96
  97         trace_ust_destroy_session(usess);
  98 }
  99
 100 static void test_create_ust_channel(void)
 101 {
 102         struct ltt_ust_channel *uchan;
 103         struct lttng_channel attr;
 104
 105         memset(&attr, 0, sizeof(attr));
 106
 107         ok(lttng_strncpy(attr.name, "channel0", sizeof(attr.name)) == 0,
 108                 "Validate channel name length");
 109         uchan = trace_ust_create_channel(&attr, LTTNG_DOMAIN_UST);
 110         ok(uchan != NULL, "Create UST channel");
 111
 112         if (!uchan) {
 113                 skip(1, "UST channel is null");
 114                 return;
 115         }
 116
 117         ok(uchan->enabled == 0 &&
 118            strncmp(uchan->name, "channel0", 8) == 0 &&
 119            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 120            uchan->ctx != NULL &&
 121            uchan->events != NULL &&
 122            uchan->attr.overwrite  == attr.attr.overwrite,
 123            "Validate UST channel");
 124
 125         trace_ust_destroy_channel(uchan);
 126 }
 127
 128 static void test_create_ust_event(void)
 129 {
 130         struct ltt_ust_event *event;
 131         struct lttng_event ev;
 132
 133         memset(&ev, 0, sizeof(ev));
 134         ok(lttng_strncpy(ev.name, get_random_string(),
 135                         LTTNG_SYMBOL_NAME_LEN) == 0,
 136                 "Validate string length");
 137         ev.type = LTTNG_EVENT_TRACEPOINT;
 138         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 139
 140         event = trace_ust_create_event(&ev, NULL, NULL, NULL, false);
 141
 142         ok(event != NULL, "Create UST event");
 143
 144         if (!event) {
 145                 skip(1, "UST event is null");
 146                 return;
 147         }
 148
 149         ok(event->enabled == 0 &&
 150            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 151            strcmp(event->attr.name, ev.name) == 0 &&
 152            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 153            "Validate UST event");
 154
 155         trace_ust_destroy_event(event);
 156 }
 157
 158 static void test_create_ust_event_exclusion(void)
 159 {
 160         struct ltt_ust_event *event;
 161         struct lttng_event ev;
 162         char *name;
 163         char *random_name;
 164         struct lttng_event_exclusion *exclusion;
 165         const int exclusion_count = 2;
 166
 167         memset(&ev, 0, sizeof(ev));
 168
 169         /* make a wildcarded event name */
 170         name = get_random_string();
 171         name[strlen(name) - 1] = '*';
 172         ok(lttng_strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN) == 0,
 173                 "Validate string length");
 174
 175         ev.type = LTTNG_EVENT_TRACEPOINT;
 176         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 177
 178         /* set up an exclusion set */
 179         exclusion = zmalloc(sizeof(*exclusion) +
 180                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 181         ok(exclusion != NULL, "Create UST exclusion");
 182         if (!exclusion) {
 183                 skip(4, "zmalloc failed");
 184                 goto end;
 185         }
 186
 187         exclusion->count = exclusion_count;
 188         random_name = get_random_string();
 189         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0), random_name,
 190                 LTTNG_SYMBOL_NAME_LEN);
 191         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1), random_name,
 192                 LTTNG_SYMBOL_NAME_LEN);
 193
 194         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 195         exclusion = NULL;
 196
 197         ok(!event, "Create UST event with identical exclusion names fails");
 198
 199         exclusion = zmalloc(sizeof(*exclusion) +
 200                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 201         ok(exclusion != NULL, "Create UST exclusion");
 202         if (!exclusion) {
 203                 skip(2, "zmalloc failed");
 204                 goto end;
 205         }
 206
 207         exclusion->count = exclusion_count;
 208         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0),
 209                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 210         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1),
 211                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 212
 213         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 214         ok(event != NULL, "Create UST event with different exclusion names");
 215
 216         if (!event) {
 217                 skip(1, "UST event with exclusion is null");
 218                 goto end;
 219         }
 220
 221         ok(event->enabled == 0 &&
 222            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 223            strcmp(event->attr.name, ev.name) == 0 &&
 224            event->exclusion != NULL &&
 225            event->exclusion->count == exclusion_count &&
 226            !memcmp(event->exclusion->names, exclusion->names,
 227                 LTTNG_SYMBOL_NAME_LEN * exclusion_count) &&
 228            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 229            "Validate UST event and exclusion");
 230
 231         trace_ust_destroy_event(event);
 232 end:
 233         return;
 234 }
 235
 236
 237 static void test_create_ust_context(void)
 238 {
 239         struct lttng_event_context ectx;
 240         struct ltt_ust_context *uctx;
 241
 242         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 243
 244         uctx = trace_ust_create_context(&ectx);
 245         ok(uctx != NULL, "Create UST context");
 246
 247         if (uctx) {
 248                 ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 249                    "Validate UST context");
 250         } else {
 251                 skip(1, "Skipping UST context validation as creation failed");
 252         }
 253         free(uctx);
 254 }
 255
 256 int main(int argc, char **argv)
 257 {
 258         plan_tests(NUM_TESTS);
 259
 260         diag("UST data structures unit test");
 261
 262         rcu_register_thread();
 263
 264         test_create_one_ust_session();
 265         test_create_ust_channel();
 266         test_create_ust_event();
 267         test_create_ust_context();
 268         test_create_ust_event_exclusion();
 269
 270         rcu_unregister_thread();
 271
 272         return exit_status();
 273 }