tests/unit/test_kernel_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 <bin/lttng-sessiond/trace-kernel.h>
  28 #include <common/defaults.h>
  29
  30 #include <tap/tap.h>
  31
  32 #define RANDOM_STRING_LEN       11
  33
  34 /* Number of TAP tests in this file */
  35 #define NUM_TESTS 11
  36
  37 /* For error.h */
  38 int lttng_opt_quiet = 1;
  39 int lttng_opt_verbose;
  40 int lttng_opt_mi;
  41 struct notification_thread_handle *notification_thread_handle;
  42
  43 int ust_consumerd32_fd;
  44 int ust_consumerd64_fd;
  45
  46 static const char alphanum[] =
  47         "0123456789"
  48         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  49         "abcdefghijklmnopqrstuvwxyz";
  50
  51 static struct ltt_kernel_session *kern;
  52 static char random_string[RANDOM_STRING_LEN];
  53
  54 /*
  55  * Return random string of 10 characters.
  56  * Not thread-safe.
  57  */
  58 static char *get_random_string(void)
  59 {
  60         int i;
  61
  62         for (i = 0; i < RANDOM_STRING_LEN - 1; i++) {
  63                 random_string[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  64         }
  65
  66         random_string[RANDOM_STRING_LEN - 1] = '\0';
  67
  68         return random_string;
  69 }
  70
  71 static void test_create_one_kernel_session(void)
  72 {
  73         kern = trace_kernel_create_session();
  74         ok(kern != NULL, "Create kernel session");
  75
  76         if (!kern) {
  77                 skip(1, "Kernel session is null");
  78                 return;
  79         }
  80         ok(kern->fd == -1 &&
  81            kern->metadata_stream_fd == -1 &&
  82            kern->consumer_fds_sent == 0 &&
  83            kern->channel_count == 0 &&
  84            kern->stream_count_global == 0 &&
  85            kern->metadata == NULL,
  86            "Validate kernel session");
  87 }
  88
  89 static void test_create_kernel_metadata(void)
  90 {
  91         assert(kern != NULL);
  92
  93         kern->metadata = trace_kernel_create_metadata();
  94         ok(kern->metadata != NULL, "Create kernel metadata");
  95
  96         ok(kern->metadata->fd == -1 &&
  97            kern->metadata->conf != NULL &&
  98            kern->metadata->conf->attr.overwrite
  99                         == DEFAULT_CHANNEL_OVERWRITE &&
 100            kern->metadata->conf->attr.subbuf_size
 101                         == default_get_metadata_subbuf_size() &&
 102            kern->metadata->conf->attr.num_subbuf
 103                         == DEFAULT_METADATA_SUBBUF_NUM &&
 104            kern->metadata->conf->attr.switch_timer_interval
 105                         == DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER &&
 106            kern->metadata->conf->attr.read_timer_interval
 107                         == DEFAULT_KERNEL_CHANNEL_READ_TIMER &&
 108            kern->metadata->conf->attr.output
 109                == DEFAULT_KERNEL_CHANNEL_OUTPUT,
 110            "Validate kernel session metadata");
 111
 112         trace_kernel_destroy_metadata(kern->metadata);
 113 }
 114
 115 static void test_create_kernel_channel(void)
 116 {
 117         struct ltt_kernel_channel *chan;
 118         struct lttng_channel attr;
 119         struct lttng_channel_extended extended;
 120
 121         memset(&attr, 0, sizeof(attr));
 122         memset(&extended, 0, sizeof(extended));
 123         attr.attr.extended.ptr = &extended;
 124
 125         chan = trace_kernel_create_channel(&attr);
 126         ok(chan != NULL, "Create kernel channel");
 127
 128         if (!chan) {
 129                 skip(1, "Channel is null");
 130                 return;
 131         }
 132
 133         ok(chan->fd == -1 &&
 134            chan->enabled == 1 &&
 135            chan->stream_count == 0 &&
 136            chan->channel->attr.overwrite  == attr.attr.overwrite,
 137            "Validate kernel channel");
 138
 139         /* Init list in order to avoid sefaults from cds_list_del */
 140         CDS_INIT_LIST_HEAD(&chan->list);
 141         trace_kernel_destroy_channel(chan);
 142 }
 143
 144 static void test_create_kernel_event(void)
 145 {
 146         struct ltt_kernel_event *event;
 147         struct lttng_event ev;
 148
 149         memset(&ev, 0, sizeof(ev));
 150         ok(!lttng_strncpy(ev.name, get_random_string(),
 151                         LTTNG_KERNEL_SYM_NAME_LEN),
 152                 "Validate string length");
 153         ev.type = LTTNG_EVENT_TRACEPOINT;
 154         ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 155
 156         event = trace_kernel_create_event(&ev, NULL, NULL);
 157         ok(event != NULL, "Create kernel event");
 158
 159         if (!event) {
 160                 skip(1, "Event is null");
 161                 return;
 162         }
 163
 164         ok(event->fd == -1 &&
 165            event->enabled == 1 &&
 166            event->event->instrumentation == LTTNG_KERNEL_TRACEPOINT &&
 167            strlen(event->event->name),
 168            "Validate kernel event");
 169
 170         /* Init list in order to avoid sefaults from cds_list_del */
 171         CDS_INIT_LIST_HEAD(&event->list);
 172         trace_kernel_destroy_event(event);
 173 }
 174
 175 static void test_create_kernel_stream(void)
 176 {
 177         struct ltt_kernel_stream *stream;
 178
 179         stream = trace_kernel_create_stream("stream1", 0);
 180         ok(stream != NULL, "Create kernel stream");
 181
 182         if (!stream) {
 183                 skip(1, "Stream is null");
 184                 return;
 185         }
 186
 187         ok(stream->fd == -1 &&
 188            stream->state == 0,
 189            "Validate kernel stream");
 190
 191         /* Init list in order to avoid sefaults from cds_list_del */
 192         CDS_INIT_LIST_HEAD(&stream->list);
 193         trace_kernel_destroy_stream(stream);
 194 }
 195
 196 int main(int argc, char **argv)
 197 {
 198         plan_tests(NUM_TESTS);
 199
 200         diag("Kernel data structure unit test");
 201
 202         test_create_one_kernel_session();
 203         test_create_kernel_metadata();
 204         test_create_kernel_channel();
 205         test_create_kernel_event();
 206         test_create_kernel_stream();
 207
 208         /* Success */
 209         return 0;
 210 }