direct/timothy_tests/EACCES_BUG/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
 163
 164 void test(char*yaffs_test_dir){
 165         struct yaffs_stat stat;
 166         int output=0;
 167         char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 168         char path[MAX_FILE_NAME_SIZE];
 169         struct handle_regster open_handles_array;
 170         //int handle_pointers[MAX_NUMBER_OF_OPENED_HANDLES];
 171         //int number_of_opened_handles=0;
 172         int x=0;
 173         join_paths(yaffs_test_dir,name,path);
 174
 175         open_handles_array.number_of_open_handles=0;
 176         for (x=0;x<MAX_NUMBER_OF_OPENED_HANDLES;x++){
 177                 open_handles_array.handle[x]=-1;
 178                 open_handles_array.path[x][0]='\0';
 179
 180         }
 181         while(1)
 182         {
 183                 path[0]='\0';// this should clear the path
 184                 add_to_buffer(&message_buffer,"number of opened handles: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 185                 append_int_to_buffer(&message_buffer,open_handles_array.number_of_open_handles,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 186                 if (open_handles_array.number_of_open_handles<MAX_NUMBER_OF_OPENED_HANDLES)
 187                 {
 188                         generate_random_string(name);
 189                         join_paths(yaffs_test_dir,name,path);
 190                         add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 191                         append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 192                         if (yaffs_access(path,0)==0){
 193                                 /*if the file already exists then stat the file*/
 194                                 add_to_buffer(&message_buffer,"file exists, trying to stat the file ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 195                                 output=yaffs_lstat(path,&stat);
 196                                 yaffs_check_for_errors(output, &message_buffer,"failed to stat file","statted file");
 197                                 //stat.st_ino,(int)stat.st_size,stat.st_mode
 198                                 add_to_buffer(&message_buffer,"yaffs inode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 199                                 append_int_to_buffer(&message_buffer,stat.st_ino,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 200                                 append_to_buffer(&message_buffer," file size: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 201                                 append_int_to_buffer(&message_buffer,(int)stat.st_size,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 202                                 append_to_buffer(&message_buffer," file mode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 203                                 append_int_to_buffer(&message_buffer,stat.st_mode,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 204                         }
 205                         else {
 206                                 add_to_buffer(&message_buffer,"file does not exists, creating file",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 207                         }
 208
 209                         output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
 210                         x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1); //set x to a random handle
 211                         add_to_buffer(&message_buffer,"handle array id ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 212                         append_int_to_buffer(&message_buffer,x,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 213
 214                         //for (x=0;handle_pointers[x]!=NULL;x++){}
 215                         open_handles_array.handle[x]=output;
 216                         open_handles_array.path[x][0]='\0';
 217                         strcat(open_handles_array.path[x],path);
 218                         add_to_buffer(&message_buffer,"yaffs handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 219                         append_int_to_buffer(&message_buffer,output,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 220                         add_to_buffer(&message_buffer,"stored handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 221                         append_int_to_buffer(&message_buffer,open_handles_array.handle[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 222                         //yaffs_open will return a null pointer if it cannot open a file. check for errors will not work.
 223                         yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
 224                         open_handles_array.number_of_open_handles++;
 225                 }
 226                 else{ /*run out of space on the handle pointer array*/
 227                         /*make space*/
 228                         while (open_handles_array.handle[x]==-1){
 229                                 x=rand() % MAX_NUMBER_OF_OPENED_HANDLES-1;
 230                         }
 231                         add_to_buffer(&message_buffer,"trying to close file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 232                         append_to_buffer(&message_buffer,open_handles_array.path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 233                         add_to_buffer(&message_buffer,"file handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 234                         append_int_to_buffer(&message_buffer,open_handles_array.handle[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 235
 236                         output=yaffs_close(open_handles_array.handle[x]);
 237
 238                         if (output==-1) yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
 239                         else {
 240                                 yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
 241                                 open_handles_array.handle[x]=-1;
 242                                 open_handles_array.path[x][0]='\0';
 243                                 open_handles_array.number_of_open_handles--;
 244                         }
 245                 }
 246         }
 247 }
 248 void  generate_random_string(char *ptr){
 249         unsigned int x;
 250         unsigned int length=((rand() %MAX_FILE_NAME_SIZE)+1);   /*creates a int with the number of charecters been between 1 and 51*/
 251         char letter='\0';
 252
 253         //printf("generating string\n");
 254         //printf("string length is %d\n",length);
 255         for (x=0; x <= (length-2) &&length>2 ; x++)
 256         {
 257                 //printf("x=%d\n",x);
 258                 /* keep generating a charecter until the charecter is legal*/
 259                 while((letter=='\0' )||(letter=='/')||(letter=='\\')){
 260                         letter=(rand() % 126-32)+32;    /*generate a number between 32 and 126 and uses it as a charecter (letter) */
 261                 }
 262                 ptr[x]=letter;
 263                 //printf("charecter generated is %c\n",ptr[x]);
 264         }
 265         ptr[x+1]='\0';  /*adds NULL charecter to turn it into a string*/
 266
 267 }
 268