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