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         if (!usess) {
  88                 skip(1, "UST session is null");
  89                 return;
  90         }
  91
  92         ok(usess->id == 42 &&
  93            usess->active == 0 &&
  94            usess->domain_global.channels != NULL &&
  95            usess->uid == 0 &&
  96            usess->gid == 0,
  97            "Validate UST session");
  98
  99         trace_ust_destroy_session(usess);
 100 }
 101
 102 static void test_create_ust_channel(void)
 103 {
 104         struct ltt_ust_channel *uchan;
 105         struct lttng_channel attr;
 106
 107         memset(&attr, 0, sizeof(attr));
 108
 109         ok(lttng_strncpy(attr.name, "channel0", sizeof(attr.name)) == 0,
 110                 "Validate channel name length");
 111         uchan = trace_ust_create_channel(&attr, LTTNG_DOMAIN_UST);
 112         ok(uchan != NULL, "Create UST channel");
 113
 114         if (!usess) {
 115                 skip(1, "UST session is null");
 116                 return;
 117         }
 118
 119         ok(uchan->enabled == 0 &&
 120            strncmp(uchan->name, "channel0", 8) == 0 &&
 121            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 122            uchan->ctx != NULL &&
 123            uchan->events != NULL &&
 124            uchan->attr.overwrite  == attr.attr.overwrite,
 125            "Validate UST channel");
 126
 127         trace_ust_destroy_channel(uchan);
 128 }
 129
 130 static void test_create_ust_event(void)
 131 {
 132         struct ltt_ust_event *event;
 133         struct lttng_event ev;
 134
 135         memset(&ev, 0, sizeof(ev));
 136         ok(lttng_strncpy(ev.name, get_random_string(),
 137                         LTTNG_SYMBOL_NAME_LEN) == 0,
 138                 "Validate string length");
 139         ev.type = LTTNG_EVENT_TRACEPOINT;
 140         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 141
 142         event = trace_ust_create_event(&ev, NULL, NULL, NULL, false);
 143
 144         ok(event != NULL, "Create UST event");
 145
 146         if (!event) {
 147                 skip(1, "UST event is null");
 148                 return;
 149         }
 150
 151         ok(event->enabled == 0 &&
 152            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 153            strcmp(event->attr.name, ev.name) == 0 &&
 154            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 155            "Validate UST event");
 156
 157         trace_ust_destroy_event(event);
 158 }
 159
 160 static void test_create_ust_event_exclusion(void)
 161 {
 162         struct ltt_ust_event *event;
 163         struct lttng_event ev;
 164         char *name;
 165         char *random_name;
 166         struct lttng_event_exclusion *exclusion;
 167         const int exclusion_count = 2;
 168
 169         memset(&ev, 0, sizeof(ev));
 170
 171         /* make a wildcarded event name */
 172         name = get_random_string();
 173         name[strlen(name) - 1] = '*';
 174         ok(lttng_strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN) == 0,
 175                 "Validate string length");
 176
 177         ev.type = LTTNG_EVENT_TRACEPOINT;
 178         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 179
 180         /* set up an exclusion set */
 181         exclusion = zmalloc(sizeof(*exclusion) +
 182                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 183         ok(exclusion != NULL, "Create UST exclusion");
 184         if (!exclusion) {
 185                 skip(4, "zmalloc failed");
 186                 goto end;
 187         }
 188
 189         exclusion->count = exclusion_count;
 190         random_name = get_random_string();
 191         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0), random_name,
 192                 LTTNG_SYMBOL_NAME_LEN);
 193         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1), random_name,
 194                 LTTNG_SYMBOL_NAME_LEN);
 195
 196         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 197         exclusion = NULL;
 198
 199         ok(!event, "Create UST event with identical exclusion names fails");
 200
 201         exclusion = zmalloc(sizeof(*exclusion) +
 202                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 203         ok(exclusion != NULL, "Create UST exclusion");
 204         if (!exclusion) {
 205                 skip(2, "zmalloc failed");
 206                 goto end;
 207         }
 208
 209         exclusion->count = exclusion_count;
 210         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0),
 211                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 212         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1),
 213                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 214
 215         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 216         ok(event != NULL, "Create UST event with different exclusion names");
 217
 218         if (!event) {
 219                 skip(1, "UST event with exclusion is null");
 220                 goto end;
 221         }
 222
 223         ok(event->enabled == 0 &&
 224            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 225            strcmp(event->attr.name, ev.name) == 0 &&
 226            event->exclusion != NULL &&
 227            event->exclusion->count == exclusion_count &&
 228            !memcmp(event->exclusion->names, exclusion->names,
 229                 LTTNG_SYMBOL_NAME_LEN * exclusion_count) &&
 230            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 231            "Validate UST event and exclusion");
 232
 233         trace_ust_destroy_event(event);
 234 end:
 235         return;
 236 }
 237
 238
 239 static void test_create_ust_context(void)
 240 {
 241         struct lttng_event_context ectx;
 242         struct ltt_ust_context *uctx;
 243
 244         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 245
 246         uctx = trace_ust_create_context(&ectx);
 247         ok(uctx != NULL, "Create UST context");
 248
 249         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 250            "Validate UST context");
 251         free(uctx);
 252 }
 253
 254 int main(int argc, char **argv)
 255 {
 256         plan_tests(NUM_TESTS);
 257
 258         diag("UST data structures unit test");
 259
 260         test_create_one_ust_session();
 261         test_create_ust_channel();
 262         test_create_ust_event();
 263         test_create_ust_context();
 264         test_create_ust_event_exclusion();
 265
 266         return exit_status();
 267 }