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 static struct ltt_ust_session *usess;
  62 static struct lttng_domain dom;
  63
  64 /*
  65  * Return random string of 10 characters.
  66  * Not thread-safe.
  67  */
  68 static char *get_random_string(void)
  69 {
  70         int i;
  71
  72         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  73                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  74         }
  75
  76         random_string[RANDOM_STRING_LEN - 1] = '\0';
  77
  78         return random_string;
  79 }
  80
  81 static void test_create_one_ust_session(void)
  82 {
  83         dom.type = LTTNG_DOMAIN_UST;
  84
  85         usess = trace_ust_create_session(42);
  86         ok(usess != NULL, "Create UST session");
  87
  88         if (!usess) {
  89                 skip(1, "UST session is null");
  90                 return;
  91         }
  92
  93         ok(usess->id == 42 &&
  94            usess->active == 0 &&
  95            usess->domain_global.channels != NULL &&
  96            usess->uid == 0 &&
  97            usess->gid == 0,
  98            "Validate UST session");
  99
 100         trace_ust_destroy_session(usess);
 101 }
 102
 103 static void test_create_ust_channel(void)
 104 {
 105         struct ltt_ust_channel *uchan;
 106         struct lttng_channel attr;
 107
 108         memset(&attr, 0, sizeof(attr));
 109
 110         ok(lttng_strncpy(attr.name, "channel0", sizeof(attr.name)) == 0,
 111                 "Validate channel name length");
 112         uchan = trace_ust_create_channel(&attr, LTTNG_DOMAIN_UST);
 113         ok(uchan != NULL, "Create UST channel");
 114
 115         if (!usess) {
 116                 skip(1, "UST session is null");
 117                 return;
 118         }
 119
 120         ok(uchan->enabled == 0 &&
 121            strncmp(uchan->name, "channel0", 8) == 0 &&
 122            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 123            uchan->ctx != NULL &&
 124            uchan->events != NULL &&
 125            uchan->attr.overwrite  == attr.attr.overwrite,
 126            "Validate UST channel");
 127
 128         trace_ust_destroy_channel(uchan);
 129 }
 130
 131 static void test_create_ust_event(void)
 132 {
 133         struct ltt_ust_event *event;
 134         struct lttng_event ev;
 135
 136         memset(&ev, 0, sizeof(ev));
 137         ok(lttng_strncpy(ev.name, get_random_string(),
 138                         LTTNG_SYMBOL_NAME_LEN) == 0,
 139                 "Validate string length");
 140         ev.type = LTTNG_EVENT_TRACEPOINT;
 141         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 142
 143         event = trace_ust_create_event(&ev, NULL, NULL, NULL, false);
 144
 145         ok(event != NULL, "Create UST event");
 146
 147         if (!event) {
 148                 skip(1, "UST event is null");
 149                 return;
 150         }
 151
 152         ok(event->enabled == 0 &&
 153            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 154            strcmp(event->attr.name, ev.name) == 0 &&
 155            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 156            "Validate UST event");
 157
 158         trace_ust_destroy_event(event);
 159 }
 160
 161 static void test_create_ust_event_exclusion(void)
 162 {
 163         struct ltt_ust_event *event;
 164         struct lttng_event ev;
 165         char *name;
 166         char *random_name;
 167         struct lttng_event_exclusion *exclusion;
 168         const int exclusion_count = 2;
 169
 170         memset(&ev, 0, sizeof(ev));
 171
 172         /* make a wildcarded event name */
 173         name = get_random_string();
 174         name[strlen(name) - 1] = '*';
 175         ok(lttng_strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN) == 0,
 176                 "Validate string length");
 177
 178         ev.type = LTTNG_EVENT_TRACEPOINT;
 179         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 180
 181         /* set up an exclusion set */
 182         exclusion = zmalloc(sizeof(*exclusion) +
 183                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 184         ok(exclusion != NULL, "Create UST exclusion");
 185         if (!exclusion) {
 186                 skip(4, "zmalloc failed");
 187                 goto end;
 188         }
 189
 190         exclusion->count = exclusion_count;
 191         random_name = get_random_string();
 192         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0), random_name,
 193                 LTTNG_SYMBOL_NAME_LEN);
 194         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1), random_name,
 195                 LTTNG_SYMBOL_NAME_LEN);
 196
 197         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 198         exclusion = NULL;
 199
 200         ok(!event, "Create UST event with identical exclusion names fails");
 201
 202         exclusion = zmalloc(sizeof(*exclusion) +
 203                 LTTNG_SYMBOL_NAME_LEN * exclusion_count);
 204         ok(exclusion != NULL, "Create UST exclusion");
 205         if (!exclusion) {
 206                 skip(2, "zmalloc failed");
 207                 goto end;
 208         }
 209
 210         exclusion->count = exclusion_count;
 211         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 0),
 212                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 213         strncpy(LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, 1),
 214                 get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 215
 216         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 217         ok(event != NULL, "Create UST event with different exclusion names");
 218
 219         if (!event) {
 220                 skip(1, "UST event with exclusion is null");
 221                 goto end;
 222         }
 223
 224         ok(event->enabled == 0 &&
 225            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 226            strcmp(event->attr.name, ev.name) == 0 &&
 227            event->exclusion != NULL &&
 228            event->exclusion->count == exclusion_count &&
 229            !memcmp(event->exclusion->names, exclusion->names,
 230                 LTTNG_SYMBOL_NAME_LEN * exclusion_count) &&
 231            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 232            "Validate UST event and exclusion");
 233
 234         trace_ust_destroy_event(event);
 235 end:
 236         return;
 237 }
 238
 239
 240 static void test_create_ust_context(void)
 241 {
 242         struct lttng_event_context ectx;
 243         struct ltt_ust_context *uctx;
 244
 245         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 246
 247         uctx = trace_ust_create_context(&ectx);
 248         ok(uctx != NULL, "Create UST context");
 249
 250         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 251            "Validate UST context");
 252         free(uctx);
 253 }
 254
 255 int main(int argc, char **argv)
 256 {
 257         plan_tests(NUM_TESTS);
 258
 259         diag("UST data structures unit test");
 260
 261         rcu_register_thread();
 262
 263         test_create_one_ust_session();
 264         test_create_ust_channel();
 265         test_create_ust_event();
 266         test_create_ust_context();
 267         test_create_ust_event_exclusion();
 268
 269         rcu_unregister_thread();
 270
 271         return exit_status();
 272 }