direct/test-framework/timothy_tests/stress_tester/yaffs_tester.c

   1 /*
   2  * YAFFS: Yet another FFS. A NAND-flash specific file system.
   3  *
   4  * Copyright (C) 2002-2018 Aleph One Ltd.
   5  *
   6  * Created by Timothy Manning <timothy@yaffs.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 /*
  14  * yaffs_tester.c designed to stress test yaffs2 direct.
  15  */
  16
  17
  18 #include "yaffs_tester.h"
  19
  20
  21
  22 int random_seed;
  23 int simulate_power_failure = 0;
  24
  25
  26 buffer message_buffer;  /*create  message_buffer */
  27
  28 char yaffs_test_dir[] ="/yaffs2/test_dir";      /*the path to the directory where all of the testing will take place*/
  29 char yaffs_mount_dir[]="/yaffs2/";              /*the path to the mount point which yaffs will mount*/
  30
  31
  32 int main(int argc, char *argv[]){
  33
  34
  35         init(yaffs_test_dir,yaffs_mount_dir,argc,argv);
  36         test(yaffs_test_dir);
  37         yaffs_unmount(yaffs_mount_dir);
  38         return 0;
  39 }
  40
  41
  42
  43 void init(char *yaffs_test_dir,char *yaffs_mount_dir,int argc, char *argv[]){
  44         char output=0;
  45         int x=0;
  46         int seed=-1;
  47         FILE *log_handle;
  48         /*these variables are already set to zero, but it is better not to take chances*/
  49         message_buffer.head=0;
  50         message_buffer.tail=0;
  51
  52
  53         log_handle=fopen(LOG_FILE,"w");
  54         if (log_handle!=NULL){
  55                 fputs("log file for yaffs tester\n",log_handle);
  56                 fclose(log_handle);
  57         }
  58         add_to_buffer(&message_buffer,"welcome to the yaffs tester",MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  59         yaffs_start_up();
  60         yaffs_mount(yaffs_mount_dir);
  61         for (x=0;x<argc;x++){
  62 //              add_to_buffer(&message_buffer,"argv ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  63 //              add_to_buffer(&message_buffer,argv[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  64                 if (strcmp("-seed",argv[x])==0){                        /*warning only compares the length of the strings, quick fix*/
  65                         seed= atoi(argv[x+1]);
  66                         /*add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  67                         append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  68                         append_to_buffer(&message_buffer,"\n",MESSAGE_LEVEL_BASIC_TASKS,PRINT);*/
  69                 }
  70         }
  71         if (seed==-1){
  72                 seed=time(NULL);
  73                 srand(seed);
  74         }
  75         else {
  76         srand(seed);
  77         }
  78         add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  79         append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  80
  81         if (yaffs_access(yaffs_test_dir,0))     /* if the test folder does not exist then create it */
  82         {
  83                 add_to_buffer(&message_buffer,"creating dir: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  84                 append_to_buffer(&message_buffer,yaffs_test_dir,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  85                 output=yaffs_mkdir(yaffs_test_dir,S_IREAD | S_IWRITE);
  86                 yaffs_check_for_errors(output, &message_buffer,"could not create dir","created dir\n\n");
  87         }
  88
  89 }
  90
  91 void quit_program(){
  92         yaffs_unmount(yaffs_mount_dir);
  93         exit(1);
  94 }
  95 void join_paths(char *path1,char *path2,char *new_path ){
  96
  97 /*      printf("strlen path1:%d\n",strlen(path1));
  98         printf("strlen path2:%d\n",strlen(path2));
  99         printf("path1; %s\n",path1);
 100 */
 101         add_to_buffer(&message_buffer, "joining paths:",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 102         append_to_buffer(&message_buffer,path1,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 103         append_to_buffer(&message_buffer, " and ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 104         append_to_buffer(&message_buffer, path2,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 105         if ( (path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]!='/') {
 106                 /*paths are compatiable. concatanate them. note -2 is because of \0*/
 107                 strcat(new_path,path1);
 108                 strcat(new_path,path2);
 109                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
 110                 //strcpy(new_path,strcat(path1,path2));
 111                 //return new_path;
 112         }
 113         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]=='/') {
 114                 /*paths are compatiable. concatanate them*/
 115                 strcat(new_path,path1);
 116                 strcat(new_path,path2);
 117                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
 118                 //strcpy(new_path,strcat(path1,path2));
 119                 //return new_path;
 120         }
 121         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]!='/') {
 122                         /*need to add a "/". */
 123                 strcat(new_path,path1);
 124                 strcat(new_path,"/");
 125                 strcat(new_path,path2);
 126                 //strcpy(new_path,strcat(path1,strcat("/\0",path2)));
 127
 128 #if 0
 129                 copy_array(path1,new_path,0,0);
 130                 copy_array('\0',new_path,0,(sizeof(path1)/sizeof(char)));
 131                 copy_array(path2,new_path,0,(sizeof(path1)/sizeof(char))+1);
 132  old method now trying to use copy_array
 133                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))+1];
 134                 for (x=0;x<=(sizeof(path1)/sizeof(char))-1;x++){
 135                         new_path[x]=path1[x];
 136                 }
 137                 new_path[x+1]='/';
 138                 for (x=(sizeof(path1)/sizeof(char)) ,i=0 ;i<=(sizeof(path2)/sizeof(char));x++,i++){
 139                         new_path[x]=path2[i];
 140                 }
 141 #endif
 142
 143                 //return new_path;
 144         }
 145         else if ((path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]=='/') {
 146                 /*need to remove a "/". */
 147                 /*yaffs does not mind the extra slash. */
 148                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))-1];
 149
 150                 strcat(new_path,path1);
 151                 strcat(new_path,path2);
 152                 //strcpy(new_path,strcat(path1,strncat("",path2,(sizeof(path1)/sizeof(char))-1)));
 153                 //return new_path;
 154         }
 155         else{
 156                 //error
 157                 //return -1;
 158         }
 159 }
 160
 161 void open_random_file(char *yaffs_test_dir, handle_regster *P_open_handles_array){
 162         int output=0;
 163         int x=0;
 164         char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 165         char path[MAX_FILE_NAME_SIZE+strlen(yaffs_test_dir)];
 166         path[0]='\0';// this should clear the path
 167         add_to_buffer(&message_buffer,"\n\number of opened handles: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 168         append_int_to_buffer(&message_buffer,P_open_handles_array->number_of_open_handles,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 169         if (P_open_handles_array->number_of_open_handles<MAX_NUMBER_OF_OPENED_HANDLES)
 170         {
 171                 generate_random_string(name,MAX_FILE_NAME_SIZE);
 172                 printf("before %d %d %d\n",strlen(yaffs_test_dir),strlen(name),strlen(path));
 173                 join_paths(yaffs_test_dir,name,path);
 174                 printf("after %d %d %d\n",strlen(yaffs_test_dir),strlen(name),strlen(path));
 175                 add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 176                 append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 177                 if (yaffs_access(path,0)==0){
 178                         stat_file(path);
 179                 }
 180                 else {
 181                         add_to_buffer(&message_buffer,"file does not exists, creating file",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 182                 }
 183
 184                 output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
 185                 x=0;
 186                 for (x=0;P_open_handles_array->handle[x]!=-3 && x<MAX_NUMBER_OF_OPENED_HANDLES;x++){}   /*find an empty handle*/
 187
 188                 add_to_buffer(&message_buffer,"handle array id ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 189                 append_int_to_buffer(&message_buffer,x,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 190
 191                 //for (x=0;handle_pointers[x]!=NULL;x++){}
 192                 P_open_handles_array->handle[x]=output;
 193                 P_open_handles_array->path[x][0]='\0';
 194                 strcat(P_open_handles_array->path[x],path);
 195                 add_to_buffer(&message_buffer,"yaffs handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 196                 append_int_to_buffer(&message_buffer,output,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 197                 add_to_buffer(&message_buffer,"stored handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 198
 199                 //yaffs_open will return a null pointer if it cannot open a file. check for errors will not work.
 200                 yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
 201
 202                 P_open_handles_array->number_of_open_handles++;
 203         }
 204         else  close_random_file(P_open_handles_array);
 205
 206 }
 207
 208 void write_to_random_file(handle_regster *P_open_handles_array){
 209         int number_of_lines_of_text=0;
 210         int length=100;
 211         char text[length+1];
 212         text[0]='\0';
 213         int seek=0;
 214         int x=0;
 215         int output=0;
 216         if (P_open_handles_array->number_of_open_handles>0){
 217
 218                 while (P_open_handles_array->handle[x]==-3){            /*find a random open handle*/
 219                         x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
 220                 }
 221                 add_to_buffer(&message_buffer,"\n\ntrying to write to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 222                 append_to_buffer(&message_buffer,P_open_handles_array->path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 223
 224                 stat_file(P_open_handles_array->path[x]);
 225                 number_of_lines_of_text=rand() %1000;
 226                 add_to_buffer(&message_buffer,"writing  ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 227                 append_int_to_buffer(&message_buffer,number_of_lines_of_text,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 228                 append_to_buffer(&message_buffer," lines of text",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 229
 230
 231                 for (;number_of_lines_of_text>0;number_of_lines_of_text--)
 232                 {
 233                         generate_random_string(text,length);
 234                         seek=rand()%1000;
 235                         add_to_buffer(&message_buffer,"trying to seek to  ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 236                         append_int_to_buffer(&message_buffer,seek,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 237                         output=yaffs_lseek(P_open_handles_array->handle[x],seek,SEEK_SET);
 238                         yaffs_check_for_errors(output, &message_buffer,"failed to seek","seeked file");
 239                         add_to_buffer(&message_buffer,"trying to write to file",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 240                         output=yaffs_write(P_open_handles_array->handle[x], text, strlen(text));
 241                         yaffs_check_for_errors(output, &message_buffer,"failed to write text","wrote text");
 242
 243                 }
 244          }
 245 }
 246
 247 void truncate_random_file(handle_regster *P_open_handles_array){
 248         int x=0;
 249         int truncate_size=0;
 250         int output=0;
 251
 252         if (P_open_handles_array->number_of_open_handles>0){
 253                 add_to_buffer(&message_buffer,"\n\ntruncate function ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 254                 while (P_open_handles_array->handle[x]==-3){            /*find a random open handle*/
 255                         x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
 256                 }
 257                 add_to_buffer(&message_buffer,"trying to truncate ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 258                 append_to_buffer(&message_buffer,P_open_handles_array->path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 259
 260                 stat_file(P_open_handles_array->path[x]);
 261                 truncate_size=rand() %10000;
 262                 output=yaffs_ftruncate(P_open_handles_array->handle[x], truncate_size);
 263                 yaffs_check_for_errors(output, &message_buffer,"failed to truncate file","truncated file");
 264         }
 265 }
 266
 267 void close_random_file(handle_regster *P_open_handles_array){
 268         /*run out of space on the handle pointer array*/
 269         /*make space*/
 270         int x=0;
 271         int output=0;
 272         int start=0;
 273         printf("trying to clear handle");
 274         if (P_open_handles_array->number_of_open_handles>0){
 275                 start=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
 276
 277                 for (x=start;(x+1>start ||x<start);){
 278                         x++;
 279                         if (x>MAX_NUMBER_OF_OPENED_HANDLES-1) x=0;
 280                         if (P_open_handles_array->handle[x] !=-3 ){
 281                                 //the handle is open, so try to close it.
 282                                 break;
 283                         }
 284
 285                 }
 286                 if (P_open_handles_array->handle[x]!=-3)
 287                 {
 288                         add_to_buffer(&message_buffer,"\n\ntrying to close file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 289                         append_to_buffer(&message_buffer,P_open_handles_array->path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 290                         add_to_buffer(&message_buffer,"file handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 291                         append_int_to_buffer(&message_buffer,P_open_handles_array->handle[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 292
 293                         stat_file(P_open_handles_array->path[x]);
 294                         output=yaffs_close(P_open_handles_array->handle[x]);
 295
 296                         if (output==-1) yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
 297                         else {
 298                                 yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
 299                                 P_open_handles_array->handle[x]=-3;
 300                                 P_open_handles_array->path[x][0]='\0';
 301                                 P_open_handles_array->number_of_open_handles--;
 302                         }
 303                 }
 304                 else {
 305                         add_to_buffer(&message_buffer,"\n\ntried to close file but could not find a open file ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 306                 }
 307         }
 308 }
 309
 310 void stat_file(char *path){
 311         int output=0;
 312         struct yaffs_stat stat;
 313         if (yaffs_access(path,0)==0){
 314                 add_to_buffer(&message_buffer,"file exists, trying to stat: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 315                 add_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 316                 output=yaffs_lstat(path,&stat);
 317                 yaffs_check_for_errors(output, &message_buffer,"failed to stat file","statted file");
 318                 //stat.st_ino,(int)stat.st_size,stat.st_mode
 319                 add_to_buffer(&message_buffer,"yaffs inode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 320                 append_int_to_buffer(&message_buffer,stat.st_ino,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 321                 append_to_buffer(&message_buffer," file size: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 322                 append_int_to_buffer(&message_buffer,(int)stat.st_size,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 323                 append_to_buffer(&message_buffer," file mode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 324                 append_int_to_buffer(&message_buffer,stat.st_mode,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 325         }
 326         else{
 327                 add_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 328                 append_to_buffer(&message_buffer," does not exist,could not stat",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 329         }
 330 }
 331
 332 void test(char*yaffs_test_dir){
 333         struct yaffs_stat stat;
 334         int output=0;
 335         //char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 336         //char path[MAX_FILE_NAME_SIZE];
 337         handle_regster open_handles_array;
 338         //int handle_pointers[MAX_NUMBER_OF_OPENED_HANDLES];
 339         //int number_of_opened_handles=0;
 340         int x=0;
 341
 342
 343         open_handles_array.number_of_open_handles=0;
 344         for (x=0;x<MAX_NUMBER_OF_OPENED_HANDLES;x++){
 345                 open_handles_array.handle[x]=-3;
 346                 open_handles_array.path[x][0]='\0';
 347
 348         }
 349
 350         while(1)
 351         {
 352
 353                 x=rand() % 3;
 354                 printf("running test: %d",x);
 355                 switch(x){
 356                         case 0 :open_random_file(yaffs_test_dir,&open_handles_array);break;
 357                         case 3 :write_to_random_file(&open_handles_array);break;
 358 //                      case 1 :close_random_file(&open_handles_array);break;
 359                         case 2 :truncate_random_file(&open_handles_array);break;
 360                 }
 361         }
 362 }
 363 void  generate_random_string(char *ptr,int length_of_str){
 364         unsigned int x;
 365         unsigned int length=((rand() %length_of_str)+1);        /*creates a int with the number of charecters been between 1 and 51*/
 366         char letter='\0';
 367
 368         //printf("generating string\n");
 369         //printf("string length is %d\n",length);
 370         for (x=0; x <= (length-2) &&length>2 ; x++)
 371         {
 372                 //printf("x=%d\n",x);
 373                 /* keep generating a charecter until the charecter is legal*/
 374                 while((letter=='\0' )||(letter=='/')||(letter=='\\')){
 375                         letter=(rand() % 126-32)+32;    /*generate a number between 32 and 126 and uses it as a charecter (letter) */
 376                 }
 377                 ptr[x]=letter;
 378                 //printf("charecter generated is %c\n",ptr[x]);
 379         }
 380         ptr[x+1]='\0';  /*adds NULL charecter to turn it into a string*/
 381
 382 }
 383