direct/timothy_tests/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  * yaffs_tester.c designed to stress test yaffs2 direct.
  14  */
  15
  16
  17 #include "yaffs_tester.h"
  18
  19
  20
  21 int random_seed;
  22 int simulate_power_failure = 0;
  23
  24
  25 buffer message_buffer;  /*create  message_buffer */
  26
  27
  28
  29 int main(){
  30         char yaffs_test_dir[] ="/yaffs2/test_dir";      /*the path to the directory where all of the testing will take place*/
  31         char yaffs_mount_dir[]="/yaffs2/";              /*the path to the mount point which yaffs will mount*/
  32
  33         init(yaffs_test_dir,yaffs_mount_dir);
  34         test(yaffs_test_dir);
  35         yaffs_unmount(yaffs_mount_dir);
  36         return 0;
  37 }
  38
  39
  40 void init(char *yaffs_test_dir,char *yaffs_mount_dir){
  41         char output=0;
  42         /*these variables are already set to zero, but it is better not to take chances*/
  43         message_buffer.head=0;
  44         message_buffer.tail=0;
  45
  46         add_to_buffer(&message_buffer,"welcome to the yaffs tester",MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  47         yaffs_start_up();
  48         yaffs_mount(yaffs_mount_dir);
  49
  50         if (yaffs_access(yaffs_test_dir,0))
  51         {
  52                 add_to_buffer(&message_buffer,"creating dir: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  53                 append_to_buffer(&message_buffer,yaffs_test_dir,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  54                 output=yaffs_mkdir(yaffs_test_dir,S_IREAD | S_IWRITE);
  55                 yaffs_check_for_errors(output, &message_buffer,"could not create dir","created dir\n\n");
  56         }
  57
  58 }
  59 void join_paths(char *path1,char *path2,char *new_path ){
  60
  61 /*      printf("strlen path1:%d\n",strlen(path1));
  62         printf("strlen path2:%d\n",strlen(path2));
  63         printf("path1; %s\n",path1);
  64 */
  65         add_to_buffer(&message_buffer, "joining paths:",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  66         append_to_buffer(&message_buffer,path1,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  67         append_to_buffer(&message_buffer, " and ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  68         append_to_buffer(&message_buffer, path2,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  69         if ( (path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]!='/') {
  70                 /*paths are compatiable. concatanate them. note -2 is because of \0*/
  71                 strcat(new_path,path1);
  72                 strcat(new_path,path2);
  73                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
  74                 //strcpy(new_path,strcat(path1,path2));
  75                 //return new_path;
  76         }
  77         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]=='/') {
  78                 /*paths are compatiable. concatanate them*/
  79                 strcat(new_path,path1);
  80                 strcat(new_path,path2);
  81                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
  82                 //strcpy(new_path,strcat(path1,path2));
  83                 //return new_path;
  84         }
  85         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]!='/') {
  86                         /*need to add a "/". */
  87                 strcat(new_path,path1);
  88                 strcat(new_path,"/");
  89                 strcat(new_path,path2);
  90                 //strcpy(new_path,strcat(path1,strcat("/\0",path2)));
  91
  92 #if 0
  93                 copy_array(path1,new_path,0,0);
  94                 copy_array('\0',new_path,0,(sizeof(path1)/sizeof(char)));
  95                 copy_array(path2,new_path,0,(sizeof(path1)/sizeof(char))+1);
  96  old method now trying to use copy_array
  97                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))+1];
  98                 for (x=0;x<=(sizeof(path1)/sizeof(char))-1;x++){
  99                         new_path[x]=path1[x];
 100                 }
 101                 new_path[x+1]='/';
 102                 for (x=(sizeof(path1)/sizeof(char)) ,i=0 ;i<=(sizeof(path2)/sizeof(char));x++,i++){
 103                         new_path[x]=path2[i];
 104                 }
 105 #endif
 106
 107                 //return new_path;
 108         }
 109         else if ((path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]=='/') {
 110                 /*need to remove a "/". */
 111                 /*yaffs does not mind the extra slash. */
 112                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))-1];
 113
 114                 strcat(new_path,path1);
 115                 strcat(new_path,path2);
 116                 //strcpy(new_path,strcat(path1,strncat("",path2,(sizeof(path1)/sizeof(char))-1)));
 117                 //return new_path;
 118         }
 119         else{
 120                 //error
 121                 //return -1;
 122         }
 123 }
 124
 125
 126
 127 void test(char*yaffs_test_dir){
 128         char output=0;
 129         char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 130         char path[MAX_FILE_NAME_SIZE];
 131         join_paths(yaffs_test_dir,name,path);
 132         while(1)
 133         {
 134                 path[0]='\0';// this should clear the path
 135                 generate_random_string(name);
 136                 join_paths(yaffs_test_dir,name,path);
 137                 add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 138                 append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 139                 output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
 140                 yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
 141         }
 142 }
 143 void  generate_random_string(char *ptr){
 144         unsigned int x;
 145         unsigned int length=((rand() %MAX_FILE_NAME_SIZE)+1);   /*creates a int with the number of charecters been between 1 and 51*/
 146         char letter='\0';
 147         //printf("generating string\n");
 148         //printf("string length is %d\n",length);
 149         for (x=0; x <= (length-2) &&length>2 ; x++)
 150         {
 151                 //printf("x=%d\n",x);
 152                 /* keep generating a charecter until the charecter is legal*/
 153                 while((letter=='\0' )||(letter=='/')||(letter=='\\')){
 154                         letter=(rand() % 126-32)+32;    /*generate a number between 32 and 126 and uses it as a charecter (letter) */
 155                 }
 156                 ptr[x]=letter;
 157                 //printf("charecter generated is %c\n",ptr[x]);
 158         }
 159         ptr[x+1]='\0';  /*adds NULL charecter to turn it into a string*/
 160
 161 }
 162