direct/tests/nor_stress.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 Charles Manning <charles@aleph1.co.uk>
   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 #include "nor_stress.h"
  16
  17
  18 #include "yaffsfs.h"
  19 #include "yaffs_fsx.h"
  20
  21 #include <stdio.h>
  22
  23
  24 extern int fuzz_test;
  25
  26 #if 1
  27 #define FSX_INIT(mount_pt) do{ if(interleave_fsx) yaffs_fsx_init(mount_pt); } while(0)
  28 #define FSX_COMPLETE() do { if(interleave_fsx) yaffs_fsx_complete(); } while (0)
  29
  30 #define FSX() \
  31 do { \
  32   if((myrand() & 0x1) == 0){\
  33      if(interleave_fsx) \
  34         yaffs_fsx_do_op(); \
  35   } \
  36 } while(0)
  37
  38 #else
  39 #define FSX_INIT(mount_point) do { } while(0)
  40 #define FSX_COMPLETE() do { } while(0)
  41 #define FSX() do { } while(0)
  42 #endif
  43
  44
  45 void (*ext_fatal)(void) = NULL;
  46
  47 static unsigned powerUps;
  48 static unsigned cycleStarts;
  49 static unsigned cycleEnds;
  50
  51 static int interleave_fsx;
  52
  53 static int no_verification;
  54
  55 char fullPathName[100];
  56 char fullPowerUpName[100];
  57 char fullStartName[100];
  58 char fullEndName[100];
  59 char fullMainName[100];
  60 char fullTempMainName[100];
  61 char fullTempCounterName[100];
  62
  63
  64 extern int random_seed;
  65
  66 int myrand(void) {
  67   random_seed = random_seed * 1103515245 + 12345;
  68   return((unsigned)(random_seed/65536) % 32768);
  69 }
  70
  71 void MakeName(char *fullName,const char *prefix, const char *name)
  72 {
  73   strcpy(fullName,prefix);
  74   strcat(fullName,"/");
  75   strcat(fullName,name);
  76 }
  77
  78
  79 void MakeFullNames(const char *prefix)
  80 {
  81   MakeName(fullPathName,prefix,"");
  82   MakeName(fullPowerUpName,prefix,"powerUps");
  83   MakeName(fullStartName,prefix,"starts");
  84   MakeName(fullEndName,prefix,"ends");
  85   MakeName(fullMainName,prefix,"main");
  86   MakeName(fullTempCounterName,prefix,"tmp-counter");
  87   MakeName(fullTempMainName,prefix,"tmp-main");
  88 }
  89
  90 static void FatalError(int lineNo)
  91 {
  92   printf("Integrity error %d\n",lineNo);
  93
  94   if(fuzz_test)
  95         return;
  96
  97   if(ext_fatal)
  98         ext_fatal();
  99
 100   while(1){
 101    sleep(1);
 102   }
 103 }
 104 void print_stat(const char *str, struct yaffs_stat *st)
 105 {
 106         printf("%s inode %d\n",str,st->st_ino);
 107 }
 108
 109 static void UpdateCounter(const char *name, unsigned *val,  int initialise)
 110 {
 111   int inh=-1;
 112   int outh=-1;
 113   unsigned x[2];
 114   int nread = 0;
 115   int nwritten = 0;
 116
 117   x[0] = x[1] = 0;
 118
 119   if(initialise){
 120     x[0] = 0;
 121     x[1] = 1;
 122   } else {
 123     inh = yaffs_open(name,O_RDONLY, S_IREAD | S_IWRITE);
 124     if(inh >= 0){
 125       nread = yaffs_read(inh,x,sizeof(x));
 126       yaffs_close(inh);
 127     }
 128
 129     if(!no_verification &&
 130       (nread != sizeof(x) ||
 131        x[0] + 1 != x[1])){
 132       printf("Error reading counter %s handle %d, x[0] %u x[1] %u last error %d\n",
 133               name, inh, x[0], x[1],yaffsfs_GetLastError());
 134       FatalError(__LINE__);
 135
 136     }
 137     x[0]++;
 138     x[1]++;
 139   }
 140
 141   FSX();
 142   outh = yaffs_open(fullTempCounterName, O_RDWR | O_TRUNC | O_CREAT, S_IREAD | S_IWRITE);
 143
 144   if(outh >= 0){
 145    struct yaffs_stat tmpstat, oldstat, tmpfstat;
 146    FSX();
 147     yaffs_fstat(outh,&tmpfstat);
 148     printf("\n\n\n*** Writing file %s inode %d\n",fullTempCounterName,tmpfstat.st_ino);
 149     nwritten = yaffs_write(outh,x,sizeof(x));
 150     FSX();
 151     yaffs_close(outh);
 152     FSX();
 153
 154     printf("About to rename %s to %s\n",fullTempCounterName,name);
 155     yaffs_stat(fullTempCounterName,&tmpstat);
 156     yaffs_stat(name,&oldstat);
 157     print_stat("old stat",&oldstat);
 158     print_stat("new stat",&tmpstat);
 159     print_stat("new fstat",&tmpfstat);
 160     yaffs_rename(fullTempCounterName,name);
 161     FSX();
 162   }
 163
 164   if(nwritten != sizeof(x)){
 165       printf("Error writing counter %s handle %d, x[0] %u x[1] %u\n",
 166               name, inh, x[0], x[1]);
 167       FatalError(__LINE__);
 168   }
 169
 170   *val = x[0];
 171
 172   printf("##\n"
 173          "## Set counter %s to %u\n"
 174          "##\n", name,x[0]);
 175 }
 176
 177
 178 static void dump_directory_tree_worker(const char *dname,int recursive)
 179 {
 180         yaffs_DIR *d;
 181         yaffs_dirent *de;
 182         struct yaffs_stat s;
 183         char str[1000];
 184         int error_line = 0;
 185
 186         d = yaffs_opendir(dname);
 187
 188         if(!d)
 189         {
 190                 printf("opendir failed\n");
 191         }
 192         else
 193         {
 194                 while((de = yaffs_readdir(d)) != NULL)
 195                 {
 196                         strcpy(str,dname);
 197                         strcat(str,"/");
 198                         strcat(str,de->d_name);
 199
 200                         yaffs_lstat(str,&s);
 201
 202                         printf("%s inode %ld %d obj %x length %d mode %X ",str, de->d_ino, s.st_ino,de->d_dont_use,(int)s.st_size,s.st_mode);\
 203                         if(de->d_ino != s.st_ino){
 204                                 printf(" \n\n!!!! HEY inode mismatch\n\n");
 205                                 error_line = __LINE__;
 206                         }
 207
 208                         switch(s.st_mode & S_IFMT)
 209                         {
 210                                 case S_IFREG: printf("data file"); break;
 211                                 case S_IFDIR: printf("directory"); break;
 212                                 case S_IFLNK: printf("symlink -->");
 213                                                           if(yaffs_readlink(str,str,100) < 0)
 214                                                                 printf("no alias");
 215                                                           else
 216                                                                 printf("\"%s\"",str);
 217                                                           break;
 218                                 default: printf("unknown"); break;
 219                         }
 220
 221                         printf("\n");
 222
 223                         if((s.st_mode & S_IFMT) == S_IFDIR && recursive)
 224                                 dump_directory_tree_worker(str,1);
 225
 226                         if(s.st_ino > 10000)
 227                           error_line = __LINE__;
 228
 229                 }
 230
 231                 if(error_line && !no_verification)
 232                         FatalError(error_line);
 233
 234                 yaffs_closedir(d);
 235         }
 236
 237 }
 238
 239 static void dump_directory_tree(const char *dname)
 240 {
 241         dump_directory_tree_worker(dname,1);
 242         printf("\n");
 243         printf("Free space in %s is %d\n\n",dname,(int)yaffs_freespace(dname));
 244 }
 245
 246
 247
 248
 249 #define XX_SIZE 500
 250
 251 static unsigned xx[XX_SIZE];
 252
 253 static int yWriteFile(const char *fname, unsigned sz32)
 254 {
 255         int h;
 256         int r;
 257         int i;
 258         struct yaffs_stat st;
 259         unsigned checksum = 0;
 260
 261
 262         FSX();
 263         h = yaffs_open(fname,O_RDWR | O_CREAT | O_TRUNC, S_IREAD | S_IWRITE);
 264         yaffs_fstat(h,&st);
 265         printf("\n\n\n**** Open writing file %s inode %d\n",fname, st.st_ino);
 266
 267         FSX();
 268
 269         if(h < 0){
 270                 printf("could not open file %s\n",fname);
 271                 return h;
 272         }
 273
 274         xx[0] = sz32;
 275         checksum ^= xx[0];
 276
 277         if((r = yaffs_write(h,xx,sizeof(unsigned))) != sizeof(unsigned)){
 278                 goto WRITE_ERROR;
 279         }
 280         FSX();
 281         while(sz32> 0){
 282                 for(i = 0; i < XX_SIZE; i++){
 283                   xx[i] = sz32 + i;
 284                   checksum ^= xx[i];
 285                 }
 286
 287                 FSX();
 288                 if((r = yaffs_write(h,xx,sizeof(xx))) != sizeof(xx)){
 289                         goto WRITE_ERROR;
 290                 }
 291                 sz32--;
 292         }
 293
 294         xx[0] = checksum;
 295         FSX();
 296         if((r = yaffs_write(h,xx,sizeof(unsigned))) != sizeof(unsigned)){
 297                 goto WRITE_ERROR;
 298         }
 299
 300         FSX();
 301         yaffs_close(h);
 302         printf("File closed\n");
 303         return 0;
 304
 305 WRITE_ERROR:
 306         printf("ywrite error at position %d\n",(int)yaffs_lseek(h,0,SEEK_END));
 307         yaffs_close(h);
 308         return -1;
 309
 310 }
 311
 312 static int yVerifyFile(const char *fName)
 313 {
 314         unsigned checksum = 0;
 315         unsigned totalSize;
 316         unsigned sz32;
 317         unsigned recordedSize = 0;
 318         int r;
 319         int h;
 320         int i;
 321         int retval = 0;
 322
 323         if(no_verification)
 324                 return 0;
 325
 326         printf("Verifying file %s\n",fName);
 327
 328         h = yaffs_open(fName, O_RDONLY,S_IREAD | S_IWRITE);
 329
 330         if(h < 0){
 331                 printf("could not open file %s\n",fName);
 332                 return -1;
 333         }
 334
 335         totalSize = yaffs_lseek(h,0,SEEK_END);
 336         yaffs_lseek(h,0,SEEK_SET);
 337
 338         r = yaffs_read(h,&sz32,sizeof(sz32));
 339
 340         if(r != sizeof(sz32)){
 341                 printf("reading size failed ... returned %d\n",r);
 342                 yaffs_close(h);
 343                 return -1;
 344         }
 345
 346         recordedSize = sz32 * sizeof(xx) + 8;
 347
 348         printf("verify %s: file size is %d, recorded size is %d\n", fName, totalSize, recordedSize);
 349         if(totalSize != recordedSize){
 350                 printf("!!!!!!!!!!!!!!!!!!!!!!!!file size is wrong, should be %d, is %d\n", recordedSize,totalSize);
 351                 yaffs_close(h);
 352                 return -1;
 353         }
 354
 355         checksum ^= sz32;
 356
 357
 358         while(sz32 > 0){
 359                 r = yaffs_read(h,xx,sizeof(xx));
 360                 if(r != sizeof(xx)){
 361                         printf("!!!!!!!!!!!!!!!!!!!!!!!!!!reading data failed ... returned %d\n",r);
 362                         yaffs_close(h);
 363                         return -1;
 364                 }
 365                 for(i = 0; i < XX_SIZE; i++)
 366                   checksum ^= xx[i];
 367                 sz32--;
 368         }
 369         r = yaffs_read(h,xx,sizeof(xx[0]));
 370         if(r != sizeof(xx[0])){
 371                 printf("!!!!!!!!!!!!!!!!!!!!!!!!!!reading data failed ... returned %d\n",r);
 372                 yaffs_close(h);
 373                 return -1;
 374         }
 375
 376         checksum ^= xx[0];
 377
 378         if(checksum != 0){
 379                 printf("!!!!!!!!!!!!!!!!!!!!! checksum failed\n");
 380                 retval = -1;
 381         } else
 382                 printf("verified ok\n");
 383         yaffs_close(h);
 384
 385         return retval;
 386 }
 387
 388
 389 static void DoUpdateMainFile(void)
 390 {
 391         int result;
 392         int sz32;
 393         sz32 = (myrand() % 1000)   + 20;
 394
 395         result = yWriteFile(fullTempMainName,sz32);
 396         FSX();
 397         if(!no_verification && result)
 398             FatalError(__LINE__);
 399         printf("Raname file %s to %s\n",fullTempMainName,fullMainName);
 400         yaffs_rename(fullTempMainName,fullMainName);
 401         FSX();
 402 }
 403
 404 static void DoVerifyMainFile(void)
 405 {
 406         int result;
 407         if(no_verification)
 408                 return;
 409         result = yVerifyFile(fullMainName);
 410         if(result)
 411             FatalError(__LINE__);
 412
 413 }
 414
 415
 416 void NorStressTestInitialise(const char *prefix)
 417 {
 418   MakeFullNames(prefix);
 419
 420   UpdateCounter(fullPowerUpName,&powerUps,1);
 421   UpdateCounter(fullStartName,&cycleStarts,1);
 422   UpdateCounter(fullEndName,&cycleEnds,1);
 423   UpdateCounter(fullPowerUpName,&powerUps,1);
 424   DoUpdateMainFile();
 425   DoVerifyMainFile();
 426 }
 427
 428
 429 void NorStressTestRun(const char *prefix, int n_cycles, int do_fsx, int skip_verification)
 430 {
 431
 432   interleave_fsx = do_fsx;
 433   no_verification = skip_verification;
 434
 435   MakeFullNames(prefix);
 436   dump_directory_tree(fullPathName);
 437   FSX_INIT(prefix);
 438
 439   dump_directory_tree(fullPathName);
 440
 441   UpdateCounter(fullPowerUpName,&powerUps,0);
 442   dump_directory_tree(fullPathName);
 443
 444   while(n_cycles < 0 || n_cycles > 0){
 445     if(n_cycles > 0)
 446       n_cycles--;
 447     UpdateCounter(fullStartName, &cycleStarts,0);
 448     dump_directory_tree(fullPathName);
 449     DoVerifyMainFile();
 450     DoUpdateMainFile();
 451     dump_directory_tree(fullPathName);
 452
 453     UpdateCounter(fullEndName,&cycleEnds,0);
 454     dump_directory_tree(fullPathName);
 455   }
 456   FSX_COMPLETE();
 457 }