direct/timothy_tests/running_out_of_handles_error/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
  31 int main(){
  32         char yaffs_test_dir[] ="/yaffs2/test_dir";      /*the path to the directory where all of the testing will take place*/
  33         char yaffs_mount_dir[]="/yaffs2/";              /*the path to the mount point which yaffs will mount*/
  34
  35         init(yaffs_test_dir,yaffs_mount_dir);
  36         test(yaffs_test_dir);
  37         yaffs_unmount(yaffs_mount_dir);
  38         return 0;
  39 }
  40
  41
  42 void init(char *yaffs_test_dir,char *yaffs_mount_dir){
  43         char output=0;
  44         /*these variables are already set to zero, but it is better not to take chances*/
  45         message_buffer.head=0;
  46         message_buffer.tail=0;
  47
  48         add_to_buffer(&message_buffer,"welcome to the yaffs tester",MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  49         yaffs_start_up();
  50         yaffs_mount(yaffs_mount_dir);
  51
  52         if (yaffs_access(yaffs_test_dir,0))
  53         {
  54                 add_to_buffer(&message_buffer,"creating dir: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  55                 append_to_buffer(&message_buffer,yaffs_test_dir,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  56                 output=yaffs_mkdir(yaffs_test_dir,S_IREAD | S_IWRITE);
  57                 yaffs_check_for_errors(output, &message_buffer,"could not create dir","created dir\n\n");
  58         }
  59
  60 }
  61 void join_paths(char *path1,char *path2,char *new_path ){
  62
  63 /*      printf("strlen path1:%d\n",strlen(path1));
  64         printf("strlen path2:%d\n",strlen(path2));
  65         printf("path1; %s\n",path1);
  66 */
  67         add_to_buffer(&message_buffer, "joining paths:",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  68         append_to_buffer(&message_buffer,path1,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  69         append_to_buffer(&message_buffer, " and ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  70         append_to_buffer(&message_buffer, path2,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  71         if ( (path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]!='/') {
  72                 /*paths are compatiable. concatanate them. note -2 is because of \0*/
  73                 strcat(new_path,path1);
  74                 strcat(new_path,path2);
  75                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
  76                 //strcpy(new_path,strcat(path1,path2));
  77                 //return new_path;
  78         }
  79         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]=='/') {
  80                 /*paths are compatiable. concatanate them*/
  81                 strcat(new_path,path1);
  82                 strcat(new_path,path2);
  83                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
  84                 //strcpy(new_path,strcat(path1,path2));
  85                 //return new_path;
  86         }
  87         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]!='/') {
  88                         /*need to add a "/". */
  89                 strcat(new_path,path1);
  90                 strcat(new_path,"/");
  91                 strcat(new_path,path2);
  92                 //strcpy(new_path,strcat(path1,strcat("/\0",path2)));
  93
  94 #if 0
  95                 copy_array(path1,new_path,0,0);
  96                 copy_array('\0',new_path,0,(sizeof(path1)/sizeof(char)));
  97                 copy_array(path2,new_path,0,(sizeof(path1)/sizeof(char))+1);
  98  old method now trying to use copy_array
  99                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))+1];
 100                 for (x=0;x<=(sizeof(path1)/sizeof(char))-1;x++){
 101                         new_path[x]=path1[x];
 102                 }
 103                 new_path[x+1]='/';
 104                 for (x=(sizeof(path1)/sizeof(char)) ,i=0 ;i<=(sizeof(path2)/sizeof(char));x++,i++){
 105                         new_path[x]=path2[i];
 106                 }
 107 #endif
 108
 109                 //return new_path;
 110         }
 111         else if ((path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]=='/') {
 112                 /*need to remove a "/". */
 113                 /*yaffs does not mind the extra slash. */
 114                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))-1];
 115
 116                 strcat(new_path,path1);
 117                 strcat(new_path,path2);
 118                 //strcpy(new_path,strcat(path1,strncat("",path2,(sizeof(path1)/sizeof(char))-1)));
 119                 //return new_path;
 120         }
 121         else{
 122                 //error
 123                 //return -1;
 124         }
 125 }
 126
 127
 128
 129 void test(char*yaffs_test_dir){
 130         char output=0;
 131         char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 132         char path[MAX_FILE_NAME_SIZE];
 133         join_paths(yaffs_test_dir,name,path);
 134         while(1)
 135         {
 136                 path[0]='\0';// this should clear the path
 137                 generate_random_string(name);
 138                 join_paths(yaffs_test_dir,name,path);
 139                 add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 140                 append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 141                 output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
 142                 yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
 143         }
 144 }
 145 void  generate_random_string(char *ptr){
 146         unsigned int x;
 147         unsigned int length=((rand() %MAX_FILE_NAME_SIZE)+1);   /*creates a int with the number of charecters been between 1 and 51*/
 148         char letter='\0';
 149         //printf("generating string\n");
 150         //printf("string length is %d\n",length);
 151         for (x=0; x <= (length-2) &&length>2 ; x++)
 152         {
 153                 //printf("x=%d\n",x);
 154                 /* keep generating a charecter until the charecter is legal*/
 155                 while((letter=='\0' )||(letter=='/')||(letter=='\\')){
 156                         letter=(rand() % 126-32)+32;    /*generate a number between 32 and 126 and uses it as a charecter (letter) */
 157                 }
 158                 ptr[x]=letter;
 159                 //printf("charecter generated is %c\n",ptr[x]);
 160         }
 161         ptr[x+1]='\0';  /*adds NULL charecter to turn it into a string*/
 162
 163 }
 164