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