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(int argc, char *argv[]){
  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,argc,argv);
  36         test(yaffs_test_dir);
  37         yaffs_unmount(yaffs_mount_dir);
  38         return 0;
  39 }
  40
  41
  42
  43 void init(char *yaffs_test_dir,char *yaffs_mount_dir,int argc, char *argv[]){
  44         char output=0;
  45         int x=0;
  46         int seed=-1;
  47         FILE *log_handle;
  48         /*these variables are already set to zero, but it is better not to take chances*/
  49         message_buffer.head=0;
  50         message_buffer.tail=0;
  51
  52
  53         log_handle=fopen(LOG_FILE,"w");
  54         if (log_handle!=NULL){
  55                 fputs("log file for yaffs tester\n",log_handle);
  56                 fclose(log_handle);
  57         }
  58         add_to_buffer(&message_buffer,"welcome to the yaffs tester",MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  59         yaffs_start_up();
  60         yaffs_mount(yaffs_mount_dir);
  61         for (x=0;x<argc;x++){
  62 //              add_to_buffer(&message_buffer,"argv ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  63 //              add_to_buffer(&message_buffer,argv[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  64                 if (strcmp("-seed",argv[x])==0){                        /*warning only compares the length of the strings, quick fix*/
  65                         seed= atoi(argv[x+1]);
  66                         /*add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  67                         append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  68                         append_to_buffer(&message_buffer,"\n",MESSAGE_LEVEL_BASIC_TASKS,PRINT);*/
  69                 }
  70         }
  71         if (seed==-1){
  72                 seed=time(NULL);
  73                 srand(seed);
  74         }
  75         else {
  76         srand(seed);
  77         }
  78         add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  79         append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/
  80
  81         if (yaffs_access(yaffs_test_dir,0))     /* if the test folder does not exist then create it */
  82         {
  83                 add_to_buffer(&message_buffer,"creating dir: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  84                 append_to_buffer(&message_buffer,yaffs_test_dir,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
  85                 output=yaffs_mkdir(yaffs_test_dir,S_IREAD | S_IWRITE);
  86                 yaffs_check_for_errors(output, &message_buffer,"could not create dir","created dir\n\n");
  87         }
  88
  89 }
  90 void join_paths(char *path1,char *path2,char *new_path ){
  91
  92 /*      printf("strlen path1:%d\n",strlen(path1));
  93         printf("strlen path2:%d\n",strlen(path2));
  94         printf("path1; %s\n",path1);
  95 */
  96         add_to_buffer(&message_buffer, "joining paths:",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  97         append_to_buffer(&message_buffer,path1,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  98         append_to_buffer(&message_buffer, " and ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
  99         append_to_buffer(&message_buffer, path2,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 100         if ( (path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]!='/') {
 101                 /*paths are compatiable. concatanate them. note -2 is because of \0*/
 102                 strcat(new_path,path1);
 103                 strcat(new_path,path2);
 104                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
 105                 //strcpy(new_path,strcat(path1,path2));
 106                 //return new_path;
 107         }
 108         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]=='/') {
 109                 /*paths are compatiable. concatanate them*/
 110                 strcat(new_path,path1);
 111                 strcat(new_path,path2);
 112                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
 113                 //strcpy(new_path,strcat(path1,path2));
 114                 //return new_path;
 115         }
 116         else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]!='/') {
 117                         /*need to add a "/". */
 118                 strcat(new_path,path1);
 119                 strcat(new_path,"/");
 120                 strcat(new_path,path2);
 121                 //strcpy(new_path,strcat(path1,strcat("/\0",path2)));
 122
 123 #if 0
 124                 copy_array(path1,new_path,0,0);
 125                 copy_array('\0',new_path,0,(sizeof(path1)/sizeof(char)));
 126                 copy_array(path2,new_path,0,(sizeof(path1)/sizeof(char))+1);
 127  old method now trying to use copy_array
 128                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))+1];
 129                 for (x=0;x<=(sizeof(path1)/sizeof(char))-1;x++){
 130                         new_path[x]=path1[x];
 131                 }
 132                 new_path[x+1]='/';
 133                 for (x=(sizeof(path1)/sizeof(char)) ,i=0 ;i<=(sizeof(path2)/sizeof(char));x++,i++){
 134                         new_path[x]=path2[i];
 135                 }
 136 #endif
 137
 138                 //return new_path;
 139         }
 140         else if ((path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]=='/') {
 141                 /*need to remove a "/". */
 142                 /*yaffs does not mind the extra slash. */
 143                 //char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))-1];
 144
 145                 strcat(new_path,path1);
 146                 strcat(new_path,path2);
 147                 //strcpy(new_path,strcat(path1,strncat("",path2,(sizeof(path1)/sizeof(char))-1)));
 148                 //return new_path;
 149         }
 150         else{
 151                 //error
 152                 //return -1;
 153         }
 154 }
 155
 156
 157
 158 void test(char*yaffs_test_dir){
 159         char output=0;
 160         char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
 161         char path[MAX_FILE_NAME_SIZE];
 162         join_paths(yaffs_test_dir,name,path);
 163         while(1)
 164         {
 165                 path[0]='\0';// this should clear the path
 166                 generate_random_string(name);
 167                 join_paths(yaffs_test_dir,name,path);
 168                 add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
 169                 append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
 170                 output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
 171                 yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
 172         }
 173 }
 174 void  generate_random_string(char *ptr){
 175         unsigned int x;
 176         unsigned int length=((rand() %MAX_FILE_NAME_SIZE)+1);   /*creates a int with the number of charecters been between 1 and 51*/
 177         char letter='\0';
 178         //printf("generating string\n");
 179         //printf("string length is %d\n",length);
 180         for (x=0; x <= (length-2) &&length>2 ; x++)
 181         {
 182                 //printf("x=%d\n",x);
 183                 /* keep generating a charecter until the charecter is legal*/
 184                 while((letter=='\0' )||(letter=='/')||(letter=='\\')){
 185                         letter=(rand() % 126-32)+32;    /*generate a number between 32 and 126 and uses it as a charecter (letter) */
 186                 }
 187                 ptr[x]=letter;
 188                 //printf("charecter generated is %c\n",ptr[x]);
 189         }
 190         ptr[x+1]='\0';  /*adds NULL charecter to turn it into a string*/
 191
 192 }
 193