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 #define _GNU_SOURCE
  20 #include <assert.h>
  21 #include <errno.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <time.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 11
  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         ok(usess->id == 42 &&
  89            usess->active == 0 &&
  90            usess->domain_global.channels != NULL &&
  91            usess->uid == 0 &&
  92            usess->gid == 0,
  93            "Validate UST session");
  94
  95         trace_ust_destroy_session(usess);
  96 }
  97
  98 static void test_create_ust_channel(void)
  99 {
 100         struct ltt_ust_channel *uchan;
 101         struct lttng_channel attr;
 102
 103         memset(&attr, 0, sizeof(attr));
 104
 105         strncpy(attr.name, "channel0", 8);
 106
 107         uchan = trace_ust_create_channel(&attr);
 108         ok(uchan != NULL, "Create UST channel");
 109
 110         ok(uchan->enabled == 0 &&
 111            strncmp(uchan->name, "channel0", 8) == 0 &&
 112            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 113            uchan->ctx != NULL &&
 114            uchan->events != NULL &&
 115            uchan->attr.overwrite  == attr.attr.overwrite,
 116            "Validate UST channel");
 117
 118         trace_ust_destroy_channel(uchan);
 119 }
 120
 121 static void test_create_ust_event(void)
 122 {
 123         struct ltt_ust_event *event;
 124         struct lttng_event ev;
 125
 126         memset(&ev, 0, sizeof(ev));
 127         strncpy(ev.name, get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 128         ev.type = LTTNG_EVENT_TRACEPOINT;
 129         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 130
 131         event = trace_ust_create_event(&ev, NULL, NULL, NULL, false);
 132
 133         ok(event != NULL, "Create UST event");
 134
 135         ok(event->enabled == 0 &&
 136            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 137            strcmp(event->attr.name, ev.name) == 0 &&
 138            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 139            "Validate UST event");
 140
 141         trace_ust_destroy_event(event);
 142 }
 143
 144 static void test_create_ust_event_exclusion(void)
 145 {
 146         struct ltt_ust_event *event;
 147         struct lttng_event ev;
 148         char *name;
 149         struct lttng_event_exclusion *exclusion;
 150
 151         memset(&ev, 0, sizeof(ev));
 152
 153         /* make a wildcarded event name */
 154         name = get_random_string();
 155         name[strlen(name) - 1] = '*';
 156         strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN);
 157
 158         ev.type = LTTNG_EVENT_TRACEPOINT;
 159         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 160
 161         /* set up an exclusion set */
 162         exclusion = zmalloc(sizeof(*exclusion) + LTTNG_SYMBOL_NAME_LEN);
 163         if (!exclusion) {
 164                 PERROR("zmalloc");
 165         }
 166
 167         ok(exclusion != NULL, "Create UST exclusion");
 168
 169         exclusion->count = 1;
 170         strncpy((char *)(exclusion->names), get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 171
 172         event = trace_ust_create_event(&ev, NULL, NULL, exclusion, false);
 173
 174         ok(event != NULL, "Create UST event with exclusion");
 175
 176         ok(event->enabled == 0 &&
 177            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 178            strcmp(event->attr.name, ev.name) == 0 &&
 179            event->exclusion != NULL &&
 180            event->exclusion->count == 1 &&
 181            strcmp((char *)(event->exclusion->names), (char *)(exclusion->names)) == 0 &&
 182            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 183            "Validate UST event and exclusion");
 184
 185         trace_ust_destroy_event(event);
 186 }
 187
 188
 189 static void test_create_ust_context(void)
 190 {
 191         struct lttng_event_context ectx;
 192         struct ltt_ust_context *uctx;
 193
 194         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 195
 196         uctx = trace_ust_create_context(&ectx);
 197         ok(uctx != NULL, "Create UST context");
 198
 199         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 200            "Validate UST context");
 201         free(uctx);
 202 }
 203
 204 int main(int argc, char **argv)
 205 {
 206         plan_tests(NUM_TESTS);
 207
 208         diag("UST data structures unit test");
 209
 210         test_create_one_ust_session();
 211         test_create_ust_channel();
 212         test_create_ust_event();
 213         test_create_ust_context();
 214         test_create_ust_event_exclusion();
 215
 216         return exit_status();
 217 }