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 #include "utils.h"
  30
  31 #define SESSION1 "test1"
  32
  33 /* This path will NEVER be created in this test */
  34 #define PATH1 "/tmp/.test-junk-lttng"
  35
  36 #define MAX_SESSIONS 10000
  37
  38 /*
  39  * String of 263 caracters. NAME_MAX + "OVERFLOW". If OVERFLOW appears in the
  40  * session name, we have a problem.
  41  *
  42  * NAME_MAX = 255
  43  */
  44 #define OVERFLOW_SESSION_NAME \
  45         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd" \
  46         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd" \
  47         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd" \
  48         "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabc"  \
  49         "OVERFLOW"
  50
  51 static struct ltt_session_list *session_list;
  52
  53 /* For lttngerr.h */
  54 int opt_quiet = 1;
  55 int opt_verbose = 0;
  56
  57 static const char alphanum[] =
  58         "0123456789"
  59         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  60         "abcdefghijklmnopqrstuvwxyz";
  61
  62 /*
  63  * Return random string of 10 characters.
  64  */
  65 static char *get_random_string(void)
  66 {
  67         int i;
  68         char *str = malloc(11);
  69
  70         for (i = 0; i < 10; i++) {
  71                 str[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
  72         }
  73
  74         str[10] = '\0';
  75
  76         return str;
  77 }
  78
  79 /*
  80  * Return 0 if session name is found, else -1
  81  */
  82 static int find_session_name(char *name)
  83 {
  84         struct ltt_session *iter;
  85
  86         cds_list_for_each_entry(iter, &session_list->head, list) {
  87                 if (strcmp(iter->name, name) == 0) {
  88                         return 0;
  89                 }
  90         }
  91
  92         return -1;
  93 }
  94
  95 /*
  96  * Empty session list manually.
  97  */
  98 static void empty_session_list(void)
  99 {
 100         struct ltt_session *iter, *tmp;
 101
 102         cds_list_for_each_entry_safe(iter, tmp, &session_list->head, list) {
 103                 cds_list_del(&iter->list);
 104                 session_list->count--;
 105                 free(iter);
 106         }
 107
 108         /* Session list must be 0 */
 109         assert(!session_list->count);
 110 }
 111
 112 /*
 113  * Test creation of 1 session
 114  */
 115 static int create_one_session(char *name, char *path)
 116 {
 117         int ret;
 118
 119         ret = create_session(name, path);
 120         if (ret >= 0) {
 121                 /* Validate */
 122                 ret = find_session_name(name);
 123                 if (ret < 0) {
 124                         /* Session not found by name */
 125                         printf("session not found after creation\n");
 126                         return -1;
 127                 } else {
 128                         /* Success */
 129                         return 0;
 130                 }
 131         } else if (ret < 0) {
 132                 if (ret == -EEXIST) {
 133                         printf("(session already exists) ");
 134                 }
 135                 return -1;
 136         }
 137
 138         return 0;
 139 }
 140
 141 /*
 142  * Test deletion of 1 session
 143  */
 144 static int destroy_one_session(char *name)
 145 {
 146         int ret;
 147
 148         ret = destroy_session(name);
 149         if (ret == 1) {
 150                 /* Validate */
 151                 ret = find_session_name(name);
 152                 if (ret < 0) {
 153                         /* Success, -1 means that the sesion is NOT found */
 154                         return 0;
 155                 } else {
 156                         /* Fail */
 157                         return -1;
 158                 }
 159         } else if (ret < 0) {
 160                 if (ret == -EEXIST) {
 161                         printf("(session already exists) ");
 162                 }
 163                 return -1;
 164         }
 165
 166         return 0;
 167 }
 168
 169 static int fuzzing_create_args(void)
 170 {
 171         int ret;
 172
 173         ret = create_one_session(NULL, NULL);
 174         if (ret >= 0) {
 175                 printf("Session created with (null),(null)\n");
 176                 return -1;
 177         }
 178
 179         ret = create_one_session(NULL, PATH1);
 180         if (ret >= 0) {
 181                 printf("Session created with (null), %s)\n", PATH1);
 182                 return -1;
 183         }
 184
 185         ret = create_one_session(SESSION1, NULL);
 186         if (ret >= 0) {
 187                 printf("Session created with %s, (null)\n", SESSION1);
 188                 return -1;
 189         }
 190
 191         /* Session list must be 0 */
 192         assert(!session_list->count);
 193
 194         return 0;
 195 }
 196
 197 static int fuzzing_destroy_args(void)
 198 {
 199         int ret;
 200
 201         ret = destroy_one_session(NULL);
 202         if (ret >= 0) {
 203                 printf("Session destroyed with (null)\n");
 204                 return -1;
 205         }
 206
 207         ret = destroy_one_session(OVERFLOW_SESSION_NAME);
 208         if (ret >= 0) {
 209                 printf("Session destroyed with %s\n", OVERFLOW_SESSION_NAME);
 210                 return -1;
 211         }
 212
 213         /* Session list must be 0 */
 214         assert(!session_list->count);
 215
 216         return 0;
 217 }
 218
 219 /*
 220  * This test is supposed to fail at the second create call. If so, return 0 for
 221  * test success, else -1.
 222  */
 223 static int two_session_same_name(void)
 224 {
 225         int ret;
 226
 227         ret = create_one_session(SESSION1, PATH1);
 228         if (ret < 0) {
 229                 /* Fail */
 230                 return -1;
 231         }
 232
 233         ret = create_one_session(SESSION1, PATH1);
 234         if (ret < 0) {
 235                 /* Success */
 236                 return 0;
 237         }
 238
 239         /* Fail */
 240         return -1;
 241 }
 242
 243 int main(int argc, char **argv)
 244 {
 245         int ret, i;
 246         char *tmp_name;
 247         struct ltt_session *iter, *tmp;
 248
 249         srand(time(NULL));
 250
 251         printf("\nTesting Sessions:\n-----------\n");
 252
 253         session_list = get_session_list();
 254         if (session_list == NULL) {
 255                 return -1;
 256         }
 257
 258         printf("Create 1 session %s: ", SESSION1);
 259         ret = create_one_session(SESSION1, PATH1);
 260         if (ret < 0) {
 261                 return -1;
 262         }
 263         PRINT_OK();
 264
 265         printf("Validating created session %s: ", SESSION1);
 266         tmp = find_session_by_name(SESSION1);
 267         if (tmp == NULL) {
 268                 return -1;
 269         }
 270         /* Basic init session values */
 271         assert(tmp->kernel_session == NULL);
 272         assert(tmp->ust_trace_count == 0);
 273         assert(strlen(tmp->path));
 274         assert(strlen(tmp->name));
 275         lock_session(tmp);
 276         unlock_session(tmp);
 277
 278         PRINT_OK();
 279
 280         printf("Destroy 1 session %s: ", SESSION1);
 281         ret = destroy_one_session(SESSION1);
 282         if (ret < 0) {
 283                 return -1;
 284         }
 285         PRINT_OK();
 286
 287         printf("Two session with same name: ");
 288         ret = two_session_same_name();
 289         if (ret < 0) {
 290                 return -1;
 291         }
 292         PRINT_OK();
 293
 294         empty_session_list();
 295
 296         printf("Fuzzing create_session arguments: ");
 297         ret = fuzzing_create_args();
 298         if (ret < 0) {
 299                 return -1;
 300         }
 301         PRINT_OK();
 302
 303         printf("Fuzzing destroy_session argument: ");
 304         ret = fuzzing_destroy_args();
 305         if (ret < 0) {
 306                 return -1;
 307         }
 308         PRINT_OK();
 309
 310         printf("Creating %d sessions: ", MAX_SESSIONS);
 311         for (i = 0; i < MAX_SESSIONS; i++) {
 312                 tmp_name = get_random_string();
 313                 ret = create_one_session(tmp_name, PATH1);
 314                 if (ret < 0) {
 315                         printf("session %d (name: %s) creation failed\n", i, tmp_name);
 316                         return -1;
 317                 }
 318                 free(tmp_name);
 319         }
 320         PRINT_OK();
 321
 322         printf("Destroying %d sessions: ", MAX_SESSIONS);
 323         for (i = 0; i < MAX_SESSIONS; i++) {
 324                 cds_list_for_each_entry_safe(iter, tmp, &session_list->head, list) {
 325                         ret = destroy_one_session(iter->name);
 326                         if (ret < 0) {
 327                                 printf("session %d (name: %s) creation failed\n", i, iter->name);
 328                                 return -1;
 329                         }
 330                 }
 331         }
 332         PRINT_OK();
 333
 334         /* Session list must be 0 */
 335         assert(!session_list->count);
 336
 337         /* Success */
 338         return 0;
 339 }