tests/test_sessions.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 "ltt-sessiond/session.h"
  29
  30 #define SESSION1 "test1"
  31
  32 /* This path will NEVER be created in this test */
  33 #define PATH1 "/tmp/.test-junk-lttng"
  34
  35 #define MAX_SESSIONS 10000
  36
  37 /*
  38  * String of 263 caracters. NAME_MAX + "OVERFLOW". If OVERFLOW appears in the
  39  * session name, we have a problem.
  40  *
  41  * NAME_MAX = 255
  42  */
  43 #define OVERFLOW_SESSION_NAME \
  44         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd" \
  45         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd" \
  46         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd" \
  47         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabc"  \
  48         "OVERFLOW"
  49
  50 static struct ltt_session_list *session_list;
  51
  52 /* For lttngerr.h */
  53 int opt_quiet = 1;
  54 int opt_verbose = 0;
  55
  56 static const char alphanum[] =
  57         "0123456789"
  58         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  59         "abcdefghijklmnopqrstuvwxyz";
  60
  61 /*
  62  * Return random string of 10 characters.
  63  */
  64 static char *get_random_string(void)
  65 {
  66         int i;
  67         char *str = malloc(11);
  68
  69         for (i = 0; i < 10; i++) {
  70                 str[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  71         }
  72
  73         str[10] = '\0';
  74
  75         return str;
  76 }
  77
  78 /*
  79  * Return 0 if session name is found, else -1
  80  */
  81 static int find_session_name(char *name)
  82 {
  83         struct ltt_session *iter;
  84
  85         cds_list_for_each_entry(iter, &session_list->head, list) {
  86                 if (strcmp(iter->name, name) == 0) {
  87                         return 0;
  88                 }
  89         }
  90
  91         return -1;
  92 }
  93
  94 /*
  95  * Empty session list manually.
  96  */
  97 static void empty_session_list(void)
  98 {
  99         struct ltt_session *iter, *tmp;
 100
 101         cds_list_for_each_entry_safe(iter, tmp, &session_list->head, list) {
 102                 cds_list_del(&iter->list);
 103                 session_list->count--;
 104                 free(iter);
 105         }
 106
 107         /* Session list must be 0 */
 108         assert(!session_list->count);
 109 }
 110
 111 /*
 112  * Test creation of 1 session
 113  */
 114 static int create_one_session(char *name, char *path)
 115 {
 116         int ret;
 117
 118         ret = create_session(name, path);
 119         if (ret >= 0) {
 120                 /* Validate */
 121                 ret = find_session_name(name);
 122                 if (ret < 0) {
 123                         /* Session not found by name */
 124                         printf("session not found after creation\n");
 125                         return -1;
 126                 } else {
 127                         /* Success */
 128                         return 0;
 129                 }
 130         } else if (ret < 0) {
 131                 if (ret == -EEXIST) {
 132                         printf("(session already exists) ");
 133                 }
 134                 return -1;
 135         }
 136
 137         return 0;
 138 }
 139
 140 /*
 141  * Test deletion of 1 session
 142  */
 143 static int destroy_one_session(char *name)
 144 {
 145         int ret;
 146
 147         ret = destroy_session(name);
 148         if (ret == 1) {
 149                 /* Validate */
 150                 ret = find_session_name(name);
 151                 if (ret < 0) {
 152                         /* Success, -1 means that the sesion is NOT found */
 153                         return 0;
 154                 } else {
 155                         /* Fail */
 156                         return -1;
 157                 }
 158         } else if (ret < 0) {
 159                 if (ret == -EEXIST) {
 160                         printf("(session already exists) ");
 161                 }
 162                 return -1;
 163         }
 164
 165         return 0;
 166 }
 167
 168 static int fuzzing_create_args(void)
 169 {
 170         int ret;
 171
 172         ret = create_one_session(NULL, NULL);
 173         if (ret >= 0) {
 174                 printf("Session created with (null),(null)\n");
 175                 return -1;
 176         }
 177
 178         ret = create_one_session(NULL, PATH1);
 179         if (ret >= 0) {
 180                 printf("Session created with (null), %s)\n", PATH1);
 181                 return -1;
 182         }
 183
 184         ret = create_one_session(SESSION1, NULL);
 185         if (ret >= 0) {
 186                 printf("Session created with %s, (null)\n", SESSION1);
 187                 return -1;
 188         }
 189
 190         /* Session list must be 0 */
 191         assert(!session_list->count);
 192
 193         return 0;
 194 }
 195
 196 static int fuzzing_destroy_args(void)
 197 {
 198         int ret;
 199
 200         ret = destroy_one_session(NULL);
 201         if (ret >= 0) {
 202                 printf("Session destroyed with (null)\n");
 203                 return -1;
 204         }
 205
 206         ret = destroy_one_session(OVERFLOW_SESSION_NAME);
 207         if (ret >= 0) {
 208                 printf("Session destroyed with %s\n", OVERFLOW_SESSION_NAME);
 209                 return -1;
 210         }
 211
 212         /* Session list must be 0 */
 213         assert(!session_list->count);
 214
 215         return 0;
 216 }
 217
 218 /*
 219  * This test is supposed to fail at the second create call. If so, return 0 for
 220  * test success, else -1.
 221  */
 222 static int two_session_same_name(void)
 223 {
 224         int ret;
 225
 226         ret = create_one_session(SESSION1, PATH1);
 227         if (ret < 0) {
 228                 /* Fail */
 229                 return -1;
 230         }
 231
 232         ret = create_one_session(SESSION1, PATH1);
 233         if (ret < 0) {
 234                 /* Success */
 235                 return 0;
 236         }
 237
 238         /* Fail */
 239         return -1;
 240 }
 241
 242 int main(int argc, char **argv)
 243 {
 244         int ret, i;
 245         char *tmp_name;
 246         struct ltt_session *iter, *tmp;
 247
 248         srand(time(NULL));
 249
 250         printf("\nTesting Sessions:\n-----------\n");
 251
 252         session_list = get_session_list();
 253         if (session_list == NULL) {
 254                 return -1;
 255         }
 256
 257         printf("Create 1 session %s: ", SESSION1);
 258         ret = create_one_session(SESSION1, PATH1);
 259         if (ret < 0) {
 260                 return -1;
 261         }
 262         printf("Success\n");
 263
 264         printf("Validating created session %s: ", SESSION1);
 265         tmp = find_session_by_name(SESSION1);
 266         if (tmp == NULL) {
 267                 return -1;
 268         }
 269         /* Basic init session values */
 270         assert(tmp->kernel_session == NULL);
 271         assert(tmp->ust_trace_count == 0);
 272         assert(strlen(tmp->path));
 273         assert(strlen(tmp->name));
 274         lock_session(tmp);
 275         unlock_session(tmp);
 276
 277         printf("Success\n");
 278
 279         printf("Destroy 1 session %s: ", SESSION1);
 280         ret = destroy_one_session(SESSION1);
 281         if (ret < 0) {
 282                 return -1;
 283         }
 284         printf("Success\n");
 285
 286         printf("Two session with same name: ");
 287         ret = two_session_same_name();
 288         if (ret < 0) {
 289                 return -1;
 290         }
 291         printf("Success\n");
 292
 293         empty_session_list();
 294
 295         printf("Fuzzing create_session arguments: ");
 296         ret = fuzzing_create_args();
 297         if (ret < 0) {
 298                 return -1;
 299         }
 300         printf("Success\n");
 301
 302         printf("Fuzzing destroy_session argument: ");
 303         ret = fuzzing_destroy_args();
 304         if (ret < 0) {
 305                 return -1;
 306         }
 307         printf("Success\n");
 308
 309         printf("Creating %d sessions: ", MAX_SESSIONS);
 310         for (i = 0; i < MAX_SESSIONS; i++) {
 311                 tmp_name = get_random_string();
 312                 ret = create_one_session(tmp_name, PATH1);
 313                 if (ret < 0) {
 314                         printf("session %d (name: %s) creation failed\n", i, tmp_name);
 315                         return -1;
 316                 }
 317                 free(tmp_name);
 318         }
 319         printf("Success\n");
 320
 321         printf("Destroying %d sessions: ", MAX_SESSIONS);
 322         for (i = 0; i < MAX_SESSIONS; i++) {
 323                 cds_list_for_each_entry_safe(iter, tmp, &session_list->head, list) {
 324                         ret = destroy_one_session(iter->name);
 325                         if (ret < 0) {
 326                                 printf("session %d (name: %s) creation failed\n", i, iter->name);
 327                                 return -1;
 328                         }
 329                 }
 330         }
 331         printf("Success\n");
 332
 333         /* Session list must be 0 */
 334         assert(!session_list->count);
 335
 336         /* Success */
 337         return 0;
 338 }