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