direct/timothy_tests/dev/yaffs_tester.c

   1 /*
   2  * YAFFS: Yet another FFS. A NAND-flash specific file system.
   3  *
   4  * Copyright (C) 2002-2010 Aleph One Ltd.
   5  *   for Toby Churchill Ltd and Brightstar Engineering
   6  *
   7  * Created by Timothy Manning <timothy@yaffs.net>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 /*
  15  * yaffs_tester.c designed to stress test yaffs2 direct.
  16  */
  17
  18
  19 #include "yaffs_tester.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 struct handle_regster{
  31         int handle[MAX_NUMBER_OF_OPENED_HANDLES];
  32         char path[MAX_NUMBER_OF_OPENED_HANDLES][100];
  33         int number_of_open_handles;
  34 };
  35
  36
  37 int main(int argc, char *argv[]){
  38         char yaffs_test_dir[] ="/yaffs2/test_dir";      /*the path to the directory where all of the testing will take place*/
  39         char yaffs_mount_dir[]="/yaffs2/";              /*the path to the mount point which yaffs will mount*/
  40
  41         init(yaffs_test_dir,yaffs_mount_dir,argc,argv);
  42         test(yaffs_test_dir);
  43         yaffs_unmount(yaffs_mount_dir);
  44         return 0;
  45 }
  46
  47
  48
  49 void init(char *yaffs_test_dir,char *yaffs_mount_dir,int argc, char *argv[]){
  50         char output=0;
  51         int x=0;
  52         int seed=-1;
  53         FILE *log_handle;
  54         /*these variables are already set to zero, but it is better not to take chances*/
  55         message_buffer.head=0;
  56         message_buffer.tail=0;
  57
  58
  59         log_handle=fopen(LOG_FILE,"w");
  60         if (log_handle!=NULL){
  61                 fputs("log file for yaffs tester\n",log_handle);
  62                 fclose(log_handle);
  63         }
  64         add_to_buffer(&message_buffer,"welcome to the yaffs tester",MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  65         yaffs_start_up();
  66         yaffs_mount(yaffs_mount_dir);
  67         for (x=0;x<argc;x++){
  68 //              add_to_buffer(&message_buffer,"argv ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  69 //              add_to_buffer(&message_buffer,argv[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  70                 if (strcmp("-seed",argv[x])==0){                        /*warning only compares the length of the strings, quick fix*/
  71                         seed= atoi(argv[x+1]);
  72                         /*add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  73                         append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  74                         append_to_buffer(&message_buffer,"\n",MESSAGE_LEVEL_BASIC_TASKS,PRINT);*/
  75                 }
  76         }
  77         if (seed==-1){
  78                 seed=time(NULL);
  79                 srand(seed);
  80         }
  81         else {
  82         srand(seed);
  83         }
  84         add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  85         append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  86
  87         if (yaffs_access(yaffs_test_dir,0))     /* if the test folder does not exist then create it */
  88         {
  89                 add_to_buffer(&message_buffer,"creating dir: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  90                 append_to_buffer(&message_buffer,yaffs_test_dir,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  91                 output=yaffs_mkdir(yaffs_test_dir,S_IREAD | S_IWRITE);
  92                 yaffs_check_for_errors(output, &message_buffer,"could not create dir","created dir\n\n");
  93         }
  94
  95 }
  96 void join_paths(char *path1,char *path2,char *new_path ){
  97
  98 /*      printf("strlen path1:%d\n",strlen(path1));
  99         printf("strlen path2:%d\n",strlen(path2));
 100         printf("path1; %s\n",path1);
 101 */
 102         add_to_buffer(&message_buffer, "joining paths:",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 103         append_to_buffer(&message_buffer,path1,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 104         append_to_buffer(&message_buffer, " and ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 105         append_to_buffer(&message_buffer, path2,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 106         if ( (path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]!='/') {
 107                 /*paths are compatiable. concatanate them. note -2 is because of \0*/
 108                 strcat(new_path,path1);
 109                 strcat(new_path,path2);
 110                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
 111                 //strcpy(new_path,strcat(path1,path2));
 112                 //return new_path;
 113         }
 114         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]=='/') {
 115                 /*paths are compatiable. concatanate them*/
 116                 strcat(new_path,path1);
 117                 strcat(new_path,path2);
 118                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
 119                 //strcpy(new_path,strcat(path1,path2));
 120                 //return new_path;
 121         }
 122         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]!='/') {
 123                         /*need to add a "/". */
 124                 strcat(new_path,path1);
 125                 strcat(new_path,"/");
 126                 strcat(new_path,path2);
 127                 //strcpy(new_path,strcat(path1,strcat("/\0",path2)));
 128
 129 #if 0
 130                 copy_array(path1,new_path,0,0);
 131                 copy_array('\0',new_path,0,(sizeof(path1)/sizeof(char)));
 132                 copy_array(path2,new_path,0,(sizeof(path1)/sizeof(char))+1);
 133  old method now trying to use copy_array
 134                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))+1];
 135                 for (x=0;x<=(sizeof(path1)/sizeof(char))-1;x++){
 136                         new_path[x]=path1[x];
 137                 }
 138                 new_path[x+1]='/';
 139                 for (x=(sizeof(path1)/sizeof(char)) ,i=0 ;i<=(sizeof(path2)/sizeof(char));x++,i++){
 140                         new_path[x]=path2[i];
 141                 }
 142 #endif
 143
 144                 //return new_path;
 145         }
 146         else if ((path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]=='/') {
 147                 /*need to remove a "/". */
 148                 /*yaffs does not mind the extra slash. */
 149                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))-1];
 150
 151                 strcat(new_path,path1);
 152                 strcat(new_path,path2);
 153                 //strcpy(new_path,strcat(path1,strncat("",path2,(sizeof(path1)/sizeof(char))-1)));
 154                 //return new_path;
 155         }
 156         else{
 157                 //error
 158                 //return -1;
 159         }
 160 }
 161
 162 void open_file();
 163 void stat_file(char *path){
 164         int output=0;
 165         struct yaffs_stat stat;
 166         if (yaffs_access(path,0)==0){
 167                 add_to_buffer(&message_buffer,"file exists, trying to stat: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 168                 add_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 169                 output=yaffs_lstat(path,&stat);
 170                 yaffs_check_for_errors(output, &message_buffer,"failed to stat file","statted file");
 171                 //stat.st_ino,(int)stat.st_size,stat.st_mode
 172                 add_to_buffer(&message_buffer,"yaffs inode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 173                 append_int_to_buffer(&message_buffer,stat.st_ino,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 174                 append_to_buffer(&message_buffer," file size: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 175                 append_int_to_buffer(&message_buffer,(int)stat.st_size,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 176                 append_to_buffer(&message_buffer," file mode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 177                 append_int_to_buffer(&message_buffer,stat.st_mode,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 178         }
 179         else{
 180                 add_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 181                 append_to_buffer(&message_buffer," does not exist,could not stat",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 182         }
 183 }
 184
 185 void test(char*yaffs_test_dir){
 186         struct yaffs_stat stat;
 187         int output=0;
 188         char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 189         char path[MAX_FILE_NAME_SIZE];
 190         struct handle_regster open_handles_array;
 191         //int handle_pointers[MAX_NUMBER_OF_OPENED_HANDLES];
 192         //int number_of_opened_handles=0;
 193         int x=0;
 194         join_paths(yaffs_test_dir,name,path);
 195
 196         open_handles_array.number_of_open_handles=0;
 197         for (x=0;x<MAX_NUMBER_OF_OPENED_HANDLES;x++){
 198                 open_handles_array.handle[x]=-3;
 199                 open_handles_array.path[x][0]='\0';
 200
 201         }
 202         while(1)
 203         {
 204                 path[0]='\0';// this should clear the path
 205                 add_to_buffer(&message_buffer,"number of opened handles: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 206                 append_int_to_buffer(&message_buffer,open_handles_array.number_of_open_handles,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 207                 if (open_handles_array.number_of_open_handles<MAX_NUMBER_OF_OPENED_HANDLES)
 208                 {
 209                         generate_random_string(name);
 210                         join_paths(yaffs_test_dir,name,path);
 211                         add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 212                         append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 213                         if (yaffs_access(path,0)==0){
 214                                 stat_file(path);
 215                         }
 216                         else {
 217                                 add_to_buffer(&message_buffer,"file does not exists, creating file",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 218                         }
 219
 220                         output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
 221                         x=0;
 222                         for (x=0;open_handles_array.handle[x]!=-3 && x<MAX_NUMBER_OF_OPENED_HANDLES;x++){
 223                                 //x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
 224                         }
 225
 226                         add_to_buffer(&message_buffer,"handle array id ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 227                         append_int_to_buffer(&message_buffer,x,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 228
 229                         //for (x=0;handle_pointers[x]!=NULL;x++){}
 230                         open_handles_array.handle[x]=output;
 231                         open_handles_array.path[x][0]='\0';
 232                         strcat(open_handles_array.path[x],path);
 233                         add_to_buffer(&message_buffer,"yaffs handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 234                         append_int_to_buffer(&message_buffer,output,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 235                         add_to_buffer(&message_buffer,"stored handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 236
 237                         //yaffs_open will return a null pointer if it cannot open a file. check for errors will not work.
 238                         yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
 239
 240                         open_handles_array.number_of_open_handles++;
 241                 }
 242                 else{ /*run out of space on the handle pointer array*/
 243                         /*make space*/
 244                         while (open_handles_array.handle[x]==-3){
 245                                 x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
 246                         }
 247                         add_to_buffer(&message_buffer,"trying to close file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 248                         append_to_buffer(&message_buffer,open_handles_array.path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 249                         add_to_buffer(&message_buffer,"file handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 250                         append_int_to_buffer(&message_buffer,open_handles_array.handle[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 251
 252                         stat_file(open_handles_array.path[x]);
 253
 254                         output=yaffs_close(open_handles_array.handle[x]);
 255
 256                         if (output==-1) yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
 257                         else {
 258                                 yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
 259                                 open_handles_array.handle[x]=-3;
 260                                 open_handles_array.path[x][0]='\0';
 261                                 open_handles_array.number_of_open_handles--;
 262                         }
 263                 }
 264         }
 265 }
 266 void  generate_random_string(char *ptr){
 267         unsigned int x;
 268         unsigned int length=((rand() %MAX_FILE_NAME_SIZE)+1);   /*creates a int with the number of charecters been between 1 and 51*/
 269         char letter='\0';
 270
 271         //printf("generating string\n");
 272         //printf("string length is %d\n",length);
 273         for (x=0; x <= (length-2) &&length>2 ; x++)
 274         {
 275                 //printf("x=%d\n",x);
 276                 /* keep generating a charecter until the charecter is legal*/
 277                 while((letter=='\0' )||(letter=='/')||(letter=='\\')){
 278                         letter=(rand() % 126-32)+32;    /*generate a number between 32 and 126 and uses it as a charecter (letter) */
 279                 }
 280                 ptr[x]=letter;
 281                 //printf("charecter generated is %c\n",ptr[x]);
 282         }
 283         ptr[x+1]='\0';  /*adds NULL charecter to turn it into a string*/
 284
 285 }
 286