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
  27 #include <lttng/lttng.h>
  28 #include <bin/lttng-sessiond/lttng-ust-abi.h>
  29 #include <common/defaults.h>
  30 #include <bin/lttng-sessiond/trace-ust.h>
  31 #include <bin/lttng-sessiond/ust-app.h>
  32
  33 #include <tap/tap.h>
  34
  35 /* This path will NEVER be created in this test */
  36 #define PATH1 "/tmp/.test-junk-lttng"
  37
  38 #define RANDOM_STRING_LEN       11
  39
  40 /* Number of TAP tests in this file */
  41 #define NUM_TESTS 16
  42
  43 /* For error.h */
  44 int lttng_opt_quiet = 1;
  45 int lttng_opt_verbose;
  46 int lttng_opt_mi;
  47
  48 int ust_consumerd32_fd;
  49 int ust_consumerd64_fd;
  50
  51 /* Global variable required by sessiond objects being linked-in */
  52 struct lttng_ht *agent_apps_ht_by_sock;
  53
  54 static const char alphanum[] =
  55         "0123456789"
  56         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  57         "abcdefghijklmnopqrstuvwxyz";
  58 static char random_string[RANDOM_STRING_LEN];
  59
  60 static struct ltt_ust_session *usess;
  61 static struct lttng_domain dom;
  62
  63 /*
  64  * Return random string of 10 characters.
  65  * Not thread-safe.
  66  */
  67 static char *get_random_string(void)
  68 {
  69         int i;
  70
  71         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  72                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  73         }
  74
  75         random_string[RANDOM_STRING_LEN - 1] = '\0';
  76
  77         return random_string;
  78 }
  79
  80 static void test_create_one_ust_session(void)
  81 {
  82         dom.type = LTTNG_DOMAIN_UST;
  83
  84         usess = trace_ust_create_session(42);
  85         ok(usess != NULL, "Create UST session");
  86
  87         ok(usess->id == 42 &&
  88            usess->active == 0 &&
  89            usess->domain_global.channels != NULL &&
  90            usess->uid == 0 &&
  91            usess->gid == 0,
  92            "Validate UST session");
  93
  94         trace_ust_destroy_session(usess);
  95 }
  96
  97 static void test_create_ust_channel(void)
  98 {
  99         struct ltt_ust_channel *uchan;
 100         struct lttng_channel attr;
 101
 102         memset(&attr, 0, sizeof(attr));
 103
 104         ok(lttng_strncpy(attr.name, "channel0", sizeof(attr.name)) == 0,
 105                 "Validate channel name length");
 106         uchan = trace_ust_create_channel(&attr, LTTNG_DOMAIN_UST);
 107         ok(uchan != NULL, "Create UST channel");
 108
 109         ok(uchan->enabled == 0 &&
 110            strncmp(uchan->name, "channel0", 8) == 0 &&
 111            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 112            uchan->ctx != NULL &&
 113            uchan->events != NULL &&
 114            uchan->attr.overwrite  == attr.attr.overwrite,
 115            "Validate UST channel");
 116
 117         trace_ust_destroy_channel(uchan);
 118 }
 119
 120 static void test_create_ust_event(void)
 121 {
 122         struct ltt_ust_event *event;
 123         struct lttng_event ev;
 124
 125         memset(&ev, 0, sizeof(ev));
 126         ok(lttng_strncpy(ev.name, get_random_string(),
 127                         LTTNG_SYMBOL_NAME_LEN) == 0,
 128                 "Validate string length");
 129         ev.type = LTTNG_EVENT_TRACEPOINT;
 130         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 131
 132         event = trace_ust_create_event(&ev, NULL, NULL, NULL, false);
 133
 134         ok(event != NULL, "Create UST event");
 135
 136         ok(event->enabled == 0 &&
 137            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 138            strcmp(event->attr.name, ev.name) == 0 &&
 139            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 140            "Validate UST event");
 141
 142         trace_ust_destroy_event(event);
 143 }
 144
 145 static void test_create_ust_event_exclusion(void)
 146 {
 147         struct ltt_ust_event *event;
 148         struct lttng_event ev;
 149         char *name;
 150         char *random_name;
 151         struct lttng_event_exclusion *exclusion;
 152         const int exclusion_count = 2;
 153
 154         memset(&ev, 0, sizeof(ev));
 155
 156         /* make a wildcarded event name */
 157         name = get_random_string();
 158         name[strlen(name) - 1] = '*';
 159         ok(lttng_strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN) == 0,
 160                 "Validate string length");
 161
 162         ev.type = LTTNG_EVENT_TRACEPOINT;
 163         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 164
 165         /* set up an exclusion set */
 166         exclusion = zmalloc(sizeof(*exclusion) +
 167                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 168         ok(exclusion != NULL, "Create UST exclusion");
 169         if (!exclusion) {
 170                 PERROR("zmalloc");
 171                 return;
 172         }
 173
 174         exclusion->count = exclusion_count;
 175         random_name = get_random_string();
 176         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0), random_name,
 177                 LTTNG_SYMBOL_NAME_LEN);
 178         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1), random_name,
 179                 LTTNG_SYMBOL_NAME_LEN);
 180
 181         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 182         exclusion = NULL;
 183
 184         ok(!event, "Create UST event with identical exclusion names fails");
 185
 186         exclusion = zmalloc(sizeof(*exclusion) +
 187                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 188         ok(exclusion != NULL, "Create UST exclusion");
 189         if (!exclusion) {
 190                 PERROR("zmalloc");
 191                 return;
 192         }
 193
 194         exclusion->count = exclusion_count;
 195         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0),
 196                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 197         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1),
 198                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 199
 200         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 201         assert(event != NULL);
 202
 203         ok(event != NULL, "Create UST event with different exclusion names");
 204
 205         ok(event->enabled == 0 &&
 206            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 207            strcmp(event->attr.name, ev.name) == 0 &&
 208            event->exclusion != NULL &&
 209            event->exclusion->count == exclusion_count &&
 210            !memcmp(event->exclusion->names, exclusion->names,
 211                 LTTNG_SYMBOL_NAME_LEN * exclusion_count) &&
 212            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 213            "Validate UST event and exclusion");
 214
 215         trace_ust_destroy_event(event);
 216 }
 217
 218
 219 static void test_create_ust_context(void)
 220 {
 221         struct lttng_event_context ectx;
 222         struct ltt_ust_context *uctx;
 223
 224         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 225
 226         uctx = trace_ust_create_context(&ectx);
 227         ok(uctx != NULL, "Create UST context");
 228
 229         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 230            "Validate UST context");
 231         free(uctx);
 232 }
 233
 234 int main(int argc, char **argv)
 235 {
 236         plan_tests(NUM_TESTS);
 237
 238         diag("UST data structures unit test");
 239
 240         test_create_one_ust_session();
 241         test_create_ust_channel();
 242         test_create_ust_event();
 243         test_create_ust_context();
 244         test_create_ust_event_exclusion();
 245
 246         return exit_status();
 247 }