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 12
  43
  44 /* For lttngerr.h */
  45 int lttng_opt_quiet = 1;
  46 int lttng_opt_verbose;
  47
  48 int ust_consumerd32_fd;
  49 int ust_consumerd64_fd;
  50
  51 static const char alphanum[] =
  52         "0123456789"
  53         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  54         "abcdefghijklmnopqrstuvwxyz";
  55 static char random_string[RANDOM_STRING_LEN];
  56
  57 static struct ltt_ust_session *usess;
  58 static struct lttng_domain dom;
  59
  60 /*
  61  * Return random string of 10 characters.
  62  * Not thread-safe.
  63  */
  64 static char *get_random_string(void)
  65 {
  66         int i;
  67
  68         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  69                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  70         }
  71
  72         random_string[RANDOM_STRING_LEN - 1] = '\0';
  73
  74         return random_string;
  75 }
  76
  77 static void test_create_one_ust_session(void)
  78 {
  79         dom.type = LTTNG_DOMAIN_UST;
  80
  81         usess = trace_ust_create_session(42);
  82         ok(usess != NULL, "Create UST session");
  83
  84         ok(usess->id == 42 &&
  85            usess->start_trace == 0 &&
  86            usess->domain_global.channels != NULL &&
  87            usess->uid == 0 &&
  88            usess->gid == 0,
  89            "Validate UST session");
  90
  91         trace_ust_destroy_session(usess);
  92 }
  93
  94 static void test_create_ust_metadata(void)
  95 {
  96         struct ltt_ust_metadata *metadata;
  97
  98         assert(usess != NULL);
  99
 100         metadata = trace_ust_create_metadata(PATH1);
 101         ok(metadata != NULL, "Create UST metadata");
 102
 103         ok(metadata->handle == -1 &&
 104            strlen(metadata->pathname) &&
 105            metadata->attr.overwrite
 106                         == DEFAULT_CHANNEL_OVERWRITE &&
 107            metadata->attr.subbuf_size
 108                         == default_get_metadata_subbuf_size() &&
 109            metadata->attr.num_subbuf
 110                         == DEFAULT_METADATA_SUBBUF_NUM &&
 111            metadata->attr.switch_timer_interval
 112                         == DEFAULT_METADATA_SWITCH_TIMER &&
 113            metadata->attr.read_timer_interval
 114                         == DEFAULT_METADATA_READ_TIMER &&
 115            metadata->attr.output == LTTNG_UST_MMAP,
 116            "Validate UST session metadata");
 117
 118         trace_ust_destroy_metadata(metadata);
 119 }
 120
 121 static void test_create_ust_channel(void)
 122 {
 123         struct ltt_ust_channel *uchan;
 124         struct lttng_channel attr;
 125
 126         memset(&attr, 0, sizeof(attr));
 127
 128         strncpy(attr.name, "channel0", 8);
 129
 130         uchan = trace_ust_create_channel(&attr);
 131         ok(uchan != NULL, "Create UST channel");
 132
 133         ok(uchan->enabled == 0 &&
 134            strncmp(uchan->name, "channel0", 8) == 0 &&
 135            uchan->name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0' &&
 136            uchan->ctx != NULL &&
 137            uchan->events != NULL &&
 138            uchan->attr.overwrite  == attr.attr.overwrite,
 139            "Validate UST channel");
 140
 141         trace_ust_destroy_channel(uchan);
 142 }
 143
 144 static void test_create_ust_event(void)
 145 {
 146         struct ltt_ust_event *event;
 147         struct lttng_event ev;
 148
 149         memset(&ev, 0, sizeof(ev));
 150         strncpy(ev.name, get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 151         ev.type = LTTNG_EVENT_TRACEPOINT;
 152         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 153
 154         event = trace_ust_create_event(&ev, NULL, NULL);
 155
 156         ok(event != NULL, "Create UST event");
 157
 158         ok(event->enabled == 0 &&
 159            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 160            strcmp(event->attr.name, ev.name) == 0 &&
 161            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 162            "Validate UST event");
 163
 164         trace_ust_destroy_event(event);
 165 }
 166
 167 static void test_create_ust_event_exclusion(void)
 168 {
 169         struct ltt_ust_event *event;
 170         struct lttng_event ev;
 171         char *name;
 172         struct lttng_event_exclusion *exclusion;
 173
 174         memset(&ev, 0, sizeof(ev));
 175
 176         /* make a wildcarded event name */
 177         name = get_random_string();
 178         name[strlen(name) - 1] = '*';
 179         strncpy(ev.name, name, LTTNG_SYMBOL_NAME_LEN);
 180
 181         ev.type = LTTNG_EVENT_TRACEPOINT;
 182         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 183
 184         /* set up an exclusion set */
 185         exclusion = zmalloc(sizeof(*exclusion) + LTTNG_SYMBOL_NAME_LEN);
 186         exclusion->count = 1;
 187         strncpy((char *)(exclusion->names), get_random_string(), LTTNG_SYMBOL_NAME_LEN);
 188
 189         event = trace_ust_create_event(&ev, NULL, exclusion);
 190
 191         ok(event != NULL, "Create UST event with exclusion");
 192
 193         ok(event->enabled == 0 &&
 194            event->attr.instrumentation == LTTNG_UST_TRACEPOINT &&
 195            strcmp(event->attr.name, ev.name) == 0 &&
 196            event->exclusion != NULL &&
 197            event->exclusion->count == 1 &&
 198            strcmp((char *)(event->exclusion->names), (char *)(exclusion->names)) == 0 &&
 199            event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] == '\0',
 200            "Validate UST event and exclusion");
 201
 202         free(exclusion);
 203         trace_ust_destroy_event(event);
 204 }
 205
 206
 207 static void test_create_ust_context(void)
 208 {
 209         struct lttng_event_context ectx;
 210         struct ltt_ust_context *uctx;
 211
 212         ectx.ctx = LTTNG_EVENT_CONTEXT_VTID;
 213
 214         uctx = trace_ust_create_context(&ectx);
 215         ok(uctx != NULL, "Create UST context");
 216
 217         ok((int) uctx->ctx.ctx == LTTNG_UST_CONTEXT_VTID,
 218            "Validate UST context");
 219         free(uctx);
 220 }
 221
 222 int main(int argc, char **argv)
 223 {
 224         plan_tests(NUM_TESTS);
 225
 226         diag("UST data structures unit test");
 227
 228         test_create_one_ust_session();
 229         test_create_ust_metadata();
 230         test_create_ust_channel();
 231         test_create_ust_event();
 232         test_create_ust_context();
 233         test_create_ust_event_exclusion();
 234
 235         return exit_status();
 236 }