direct/test-framework/tests/nor_stress.c

   1 /*
   2  * YAFFS: Yet another FFS. A NAND-flash specific file system.
   3  *
   4  * Copyright (C) 2002-2011 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 #include <unistd.h>
  23
  24
  25 extern int fuzz_test;
  26
  27 #if 1
  28 #define FSX_INIT(mount_pt) do{ if(interleave_fsx) yaffs_fsx_init(mount_pt); } while(0)
  29 #define FSX_COMPLETE() do { if(interleave_fsx) yaffs_fsx_complete(); } while (0)
  30
  31 #define FSX() \
  32 do { \
  33   if((myrand() & 0x1) == 0){\
  34      if(interleave_fsx) \
  35         yaffs_fsx_do_op(); \
  36   } \
  37 } while(0)
  38
  39 #else
  40 #define FSX_INIT(mount_point) do { } while(0)
  41 #define FSX_COMPLETE() do { } while(0)
  42 #define FSX() do { } while(0)
  43 #endif
  44
  45
  46 void (*ext_fatal)(void) = NULL;
  47
  48 static unsigned powerUps;
  49 static unsigned cycleStarts;
  50 static unsigned cycleEnds;
  51
  52 static int interleave_fsx;
  53
  54 static int no_verification;
  55
  56 char fullPathName[100];
  57 char fullPowerUpName[100];
  58 char fullStartName[100];
  59 char fullEndName[100];
  60 char fullMainName[100];
  61 char fullTempMainName[100];
  62 char fullTempCounterName[100];
  63
  64
  65 extern int random_seed;
  66
  67 int myrand(void) {
  68   random_seed = random_seed * 1103515245 + 12345;
  69   return((unsigned)(random_seed/65536) % 32768);
  70 }
  71
  72 void MakeName(char *fullName,const char *prefix, const char *name)
  73 {
  74   strcpy(fullName,prefix);
  75   strcat(fullName,"/");
  76   strcat(fullName,name);
  77 }
  78
  79
  80 void MakeFullNames(const char *prefix)
  81 {
  82   MakeName(fullPathName,prefix,"");
  83   MakeName(fullPowerUpName,prefix,"powerUps");
  84   MakeName(fullStartName,prefix,"starts");
  85   MakeName(fullEndName,prefix,"ends");
  86   MakeName(fullMainName,prefix,"main");
  87   MakeName(fullTempCounterName,prefix,"tmp-counter");
  88   MakeName(fullTempMainName,prefix,"tmp-main");
  89 }
  90
  91 static void FatalError(int line_no)
  92 {
  93   printf("Integrity error %d\n",line_no);
  94
  95   if(fuzz_test)
  96         return;
  97
  98   if(ext_fatal)
  99         ext_fatal();
 100
 101   while(1){
 102    sleep(1);
 103   }
 104 }
 105 void print_stat(const char *str, struct yaffs_stat *st)
 106 {
 107         printf("%s inode %d\n",str,st->st_ino);
 108 }
 109
 110 static void UpdateCounter(const char *name, unsigned *val,  int initialise)
 111 {
 112   int inh=-1;
 113   int outh=-1;
 114   unsigned x[2];
 115   int nread = 0;
 116   int nwritten = 0;
 117
 118   x[0] = x[1] = 0;
 119
 120   if(initialise){
 121     x[0] = 0;
 122     x[1] = 1;
 123   } else {
 124     inh = yaffs_open(name,O_RDONLY, S_IREAD | S_IWRITE);
 125     if(inh >= 0){
 126       nread = yaffs_read(inh,x,sizeof(x));
 127       yaffs_close(inh);
 128     }
 129
 130     if(!no_verification &&
 131       (nread != sizeof(x) ||
 132        x[0] + 1 != x[1])){
 133       printf("Error reading counter %s handle %d, x[0] %u x[1] %u last error %d\n",
 134               name, inh, x[0], x[1],yaffsfs_GetLastError());
 135       FatalError(__LINE__);
 136
 137     }
 138     x[0]++;
 139     x[1]++;
 140   }
 141
 142   FSX();
 143   outh = yaffs_open(fullTempCounterName, O_RDWR | O_TRUNC | O_CREAT, S_IREAD | S_IWRITE);
 144
 145   if(outh >= 0){
 146    struct yaffs_stat tmpstat, oldstat, tmpfstat;
 147    FSX();
 148     yaffs_fstat(outh,&tmpfstat);
 149     printf("\n\n\n*** Writing file %s inode %d\n",fullTempCounterName,tmpfstat.st_ino);
 150     nwritten = yaffs_write(outh,x,sizeof(x));
 151     FSX();
 152     yaffs_close(outh);
 153     FSX();
 154
 155     printf("About to rename %s to %s\n",fullTempCounterName,name);
 156     yaffs_stat(fullTempCounterName,&tmpstat);
 157     yaffs_stat(name,&oldstat);
 158     print_stat("old stat",&oldstat);
 159     print_stat("new stat",&tmpstat);
 160     print_stat("new fstat",&tmpfstat);
 161     yaffs_rename(fullTempCounterName,name);
 162     FSX();
 163   }
 164
 165   if(nwritten != sizeof(x)){
 166       printf("Error writing counter %s handle %d, x[0] %u x[1] %u\n",
 167               name, inh, x[0], x[1]);
 168       FatalError(__LINE__);
 169   }
 170
 171   *val = x[0];
 172
 173   printf("##\n"
 174          "## Set counter %s to %u\n"
 175          "##\n", name,x[0]);
 176 }
 177
 178
 179 static void dump_directory_tree_worker(const char *dname,int recursive)
 180 {
 181         yaffs_DIR *d;
 182         struct yaffs_dirent *de;
 183         struct yaffs_stat s;
 184         char str[1000];
 185         int error_line = 0;
 186         int nentries;
 187
 188         d = yaffs_opendir(dname);
 189
 190         if(!d)
 191         {
 192                 printf("opendir failed\n");
 193         }
 194         else
 195         {
 196                 nentries = 0;
 197                 while((de = yaffs_readdir(d)) != NULL)
 198                 {
 199                         strcpy(str,dname);
 200                         strcat(str,"/");
 201                         strcat(str,de->d_name);
 202                         nentries++;
 203
 204                         yaffs_lstat(str,&s);
 205
 206                         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);\
 207                         if(de->d_ino != s.st_ino){
 208                                 printf(" \n\n!!!! HEY inode mismatch\n\n");
 209                                 error_line = __LINE__;
 210                         }
 211
 212                         switch(s.st_mode & S_IFMT)
 213                         {
 214                                 case S_IFREG: printf("data file"); break;
 215                                 case S_IFDIR: printf("directory"); break;
 216                                 case S_IFLNK: printf("symlink -->");
 217                                                           if(yaffs_readlink(str,str,100) < 0)
 218                                                                 printf("no alias");
 219                                                           else
 220                                                                 printf("\"%s\"",str);
 221                                                           break;
 222                                 default: printf("unknown"); break;
 223                         }
 224
 225                         printf("\n");
 226
 227                         if((s.st_mode & S_IFMT) == S_IFDIR && recursive)
 228                                 dump_directory_tree_worker(str,1);
 229
 230                         if(s.st_ino > 10000)
 231                                 error_line = __LINE__;
 232
 233                 }
 234
 235                 if(strstr(dname,"lost+found") && nentries >0){
 236                         printf("\n\n!!! HEY lost+found not empty, had %d entries\n\n\n",nentries);
 237                         error_line = __LINE__;
 238                 }
 239
 240                 if(error_line && !no_verification)
 241                         FatalError(error_line);
 242
 243                 yaffs_closedir(d);
 244         }
 245
 246 }
 247
 248 static void dump_directory_tree(const char *dname)
 249 {
 250         dump_directory_tree_worker(dname,1);
 251         printf("\n");
 252         printf("Free space in %s is %d\n\n",dname,(int)yaffs_freespace(dname));
 253 }
 254
 255
 256
 257
 258 #define XX_SIZE 500
 259
 260 static unsigned xx[XX_SIZE];
 261
 262 static int y_wr_file(const char *fname, unsigned sz32)
 263 {
 264         int h;
 265         int r;
 266         int i;
 267         struct yaffs_stat st;
 268         unsigned checksum = 0;
 269
 270
 271         FSX();
 272         h = yaffs_open(fname,O_RDWR | O_CREAT | O_TRUNC, S_IREAD | S_IWRITE);
 273         yaffs_fstat(h,&st);
 274         printf("\n\n\n**** Open writing file %s inode %d\n",fname, st.st_ino);
 275
 276         FSX();
 277
 278         if(h < 0){
 279                 printf("could not open file %s\n",fname);
 280                 return h;
 281         }
 282
 283         xx[0] = sz32;
 284         checksum ^= xx[0];
 285
 286         if((r = yaffs_write(h,xx,sizeof(unsigned))) != sizeof(unsigned)){
 287                 goto WRITE_ERROR;
 288         }
 289         FSX();
 290         while(sz32> 0){
 291                 for(i = 0; i < XX_SIZE; i++){
 292                   xx[i] = sz32 + i;
 293                   checksum ^= xx[i];
 294                 }
 295
 296                 FSX();
 297                 if((r = yaffs_write(h,xx,sizeof(xx))) != sizeof(xx)){
 298                         goto WRITE_ERROR;
 299                 }
 300                 sz32--;
 301         }
 302
 303         xx[0] = checksum;
 304         FSX();
 305         if((r = yaffs_write(h,xx,sizeof(unsigned))) != sizeof(unsigned)){
 306                 goto WRITE_ERROR;
 307         }
 308
 309         FSX();
 310         yaffs_close(h);
 311         printf("File closed\n");
 312         return 0;
 313
 314 WRITE_ERROR:
 315         printf("ywrite error at position %d\n",(int)yaffs_lseek(h,0,SEEK_END));
 316         yaffs_close(h);
 317         return -1;
 318
 319 }
 320
 321 static int y_verify_file(const char *fName)
 322 {
 323         unsigned checksum = 0;
 324         unsigned totalSize;
 325         unsigned sz32;
 326         unsigned recordedSize = 0;
 327         int r;
 328         int h;
 329         int i;
 330         int retval = 0;
 331
 332         if(no_verification)
 333                 return 0;
 334
 335         printf("Verifying file %s\n",fName);
 336
 337         h = yaffs_open(fName, O_RDONLY,S_IREAD | S_IWRITE);
 338
 339         if(h < 0){
 340                 printf("could not open file %s\n",fName);
 341                 return -1;
 342         }
 343
 344         totalSize = yaffs_lseek(h,0,SEEK_END);
 345         yaffs_lseek(h,0,SEEK_SET);
 346
 347         r = yaffs_read(h,&sz32,sizeof(sz32));
 348
 349         if(r != sizeof(sz32)){
 350                 printf("reading size failed ... returned %d\n",r);
 351                 yaffs_close(h);
 352                 return -1;
 353         }
 354
 355         recordedSize = sz32 * sizeof(xx) + 8;
 356
 357         printf("verify %s: file size is %d, recorded size is %d\n", fName, totalSize, recordedSize);
 358         if(totalSize != recordedSize){
 359                 printf("!!!!!!!!!!!!!!!!!!!!!!!!file size is wrong, should be %d, is %d\n", recordedSize,totalSize);
 360                 yaffs_close(h);
 361                 return -1;
 362         }
 363
 364         checksum ^= sz32;
 365
 366
 367         while(sz32 > 0){
 368                 r = yaffs_read(h,xx,sizeof(xx));
 369                 if(r != sizeof(xx)){
 370                         printf("!!!!!!!!!!!!!!!!!!!!!!!!!!reading data failed ... returned %d\n",r);
 371                         yaffs_close(h);
 372                         return -1;
 373                 }
 374                 for(i = 0; i < XX_SIZE; i++)
 375                   checksum ^= xx[i];
 376                 sz32--;
 377         }
 378         r = yaffs_read(h,xx,sizeof(xx[0]));
 379         if(r != sizeof(xx[0])){
 380                 printf("!!!!!!!!!!!!!!!!!!!!!!!!!!reading data failed ... returned %d\n",r);
 381                 yaffs_close(h);
 382                 return -1;
 383         }
 384
 385         checksum ^= xx[0];
 386
 387         if(checksum != 0){
 388                 printf("!!!!!!!!!!!!!!!!!!!!! checksum failed\n");
 389                 retval = -1;
 390         } else
 391                 printf("verified ok\n");
 392         yaffs_close(h);
 393
 394         return retval;
 395 }
 396
 397
 398 static void DoUpdateMainFile(void)
 399 {
 400         int result;
 401         int sz32;
 402         sz32 = (myrand() % 1000)   + 20;
 403
 404         result = y_wr_file(fullTempMainName,sz32);
 405         FSX();
 406         if(!no_verification && result)
 407             FatalError(__LINE__);
 408         printf("Rename file %s to %s\n",fullTempMainName,fullMainName);
 409         yaffs_rename(fullTempMainName,fullMainName);
 410         FSX();
 411 }
 412
 413 static void DoVerifyMainFile(void)
 414 {
 415         int result;
 416         if(no_verification)
 417                 return;
 418         result = y_verify_file(fullMainName);
 419         if(result)
 420             FatalError(__LINE__);
 421
 422 }
 423
 424
 425 void NorStressTestInitialise(const char *prefix)
 426 {
 427   MakeFullNames(prefix);
 428
 429   UpdateCounter(fullPowerUpName,&powerUps,1);
 430   UpdateCounter(fullStartName,&cycleStarts,1);
 431   UpdateCounter(fullEndName,&cycleEnds,1);
 432   UpdateCounter(fullPowerUpName,&powerUps,1);
 433   DoUpdateMainFile();
 434   DoVerifyMainFile();
 435 }
 436
 437
 438 void NorStressTestRun(const char *prefix, int n_cycles, int do_fsx, int skip_verification)
 439 {
 440
 441   interleave_fsx = do_fsx;
 442   no_verification = skip_verification;
 443
 444   MakeFullNames(prefix);
 445   dump_directory_tree(fullPathName);
 446   FSX_INIT(prefix);
 447
 448   dump_directory_tree(fullPathName);
 449
 450   UpdateCounter(fullPowerUpName,&powerUps,0);
 451   dump_directory_tree(fullPathName);
 452
 453   while(n_cycles < 0 || n_cycles > 0){
 454     if(n_cycles > 0)
 455       n_cycles--;
 456     UpdateCounter(fullStartName, &cycleStarts,0);
 457     dump_directory_tree(fullPathName);
 458     DoVerifyMainFile();
 459     DoUpdateMainFile();
 460     dump_directory_tree(fullPathName);
 461
 462     UpdateCounter(fullEndName,&cycleEnds,0);
 463     dump_directory_tree(fullPathName);
 464   }
 465   FSX_COMPLETE();
 466 }