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 10
  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 static const char alphanum[] =
  53         "0123456789"
  54         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  55         "abcdefghijklmnopqrstuvwxyz";
  56 static char random_string[RANDOM_STRING_LEN];
  57
  58 static struct ltt_ust_session *usess;
  59 static struct lttng_domain dom;
  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         dom.type = LTTNG_DOMAIN_UST;
  81
  82         usess = trace_ust_create_session(42);
  83         ok(usess != NULL, "Create UST session");
  84
  85         ok(usess->id == 42 &&
  86            usess->active == 0 &&
  87            usess->domain_global.channels != NULL &&
  88            usess->uid == 0 &&
  89            usess->gid == 0,
  90            "Validate UST session");
  91
  92         trace_ust_destroy_session(usess);
  93 }
  94
  95 static void test_create_ust_channel(void)
  96 {
  97         struct ltt_ust_channel *uchan;
  98         struct lttng_channel attr;
  99
 100         memset(&attr, 0, sizeof(attr));
 101
 102         strncpy(attr.name, "channel0", 8);
 103
 104         uchan = trace_ust_create_channel(&attr);
 105         ok(uchan != NULL, "Create UST channel");
 106
 107         ok(uchan->enabled == 0 &&
 108            strncmp(uchan->name, "channel0", 8) == 0 &&
 109            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 110            uchan->ctx != NULL &&
 111            uchan->events != NULL &&
 112            uchan->attr.overwrite  == attr.attr.overwrite,
 113            "Validate UST channel");
 114
 115         trace_ust_destroy_channel(uchan);
 116 }
 117
 118 static void test_create_ust_event(void)
 119 {
 120         struct ltt_ust_event *event;
 121         struct lttng_event ev;
 122
 123         memset(&ev, 0, sizeof(ev));
 124         strncpy(ev.name, get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 125         ev.type = LTTNG_EVENT_TRACEPOINT;
 126         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 127
 128         event = trace_ust_create_event(&ev, NULL, NULL, NULL);
 129
 130         ok(event != NULL, "Create UST event");
 131
 132         ok(event->enabled == 0 &&
 133            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 134            strcmp(event->attr.name, ev.name) == 0 &&
 135            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 136            "Validate UST event");
 137
 138         trace_ust_destroy_event(event);
 139 }
 140
 141 static void test_create_ust_event_exclusion(void)
 142 {
 143         struct ltt_ust_event *event;
 144         struct lttng_event ev;
 145         char *name;
 146         struct lttng_event_exclusion *exclusion;
 147
 148         memset(&ev, 0, sizeof(ev));
 149
 150         /* make a wildcarded event name */
 151         name = get_random_string();
 152         name[strlen(name) - 1] = '*';
 153         strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN);
 154
 155         ev.type = LTTNG_EVENT_TRACEPOINT;
 156         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 157
 158         /* set up an exclusion set */
 159         exclusion = zmalloc(sizeof(*exclusion) + LTTNG_SYMBOL_NAME_LEN);
 160         exclusion->count = 1;
 161         strncpy((char *)(exclusion->names), get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 162
 163         event = trace_ust_create_event(&ev, NULL, NULL, exclusion);
 164
 165         ok(event != NULL, "Create UST event with exclusion");
 166
 167         ok(event->enabled == 0 &&
 168            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 169            strcmp(event->attr.name, ev.name) == 0 &&
 170            event->exclusion != NULL &&
 171            event->exclusion->count == 1 &&
 172            strcmp((char *)(event->exclusion->names), (char *)(exclusion->names)) == 0 &&
 173            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 174            "Validate UST event and exclusion");
 175
 176         trace_ust_destroy_event(event);
 177 }
 178
 179
 180 static void test_create_ust_context(void)
 181 {
 182         struct lttng_event_context ectx;
 183         struct ltt_ust_context *uctx;
 184
 185         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 186
 187         uctx = trace_ust_create_context(&ectx);
 188         ok(uctx != NULL, "Create UST context");
 189
 190         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 191            "Validate UST context");
 192         free(uctx);
 193 }
 194
 195 int main(int argc, char **argv)
 196 {
 197         plan_tests(NUM_TESTS);
 198
 199         diag("UST data structures unit test");
 200
 201         test_create_one_ust_session();
 202         test_create_ust_channel();
 203         test_create_ust_event();
 204         test_create_ust_context();
 205         test_create_ust_event_exclusion();
 206
 207         return exit_status();
 208 }