2 * YAFFS: Yet another FFS. A NAND-flash specific file system.
5 * Copyright (C) 2002 Aleph One Ltd.
6 * for Toby Churchill Ltd and Brightstar Engineering
8 * Created by Charles Manning <charles@aleph1.co.uk>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
16 #include "yaffsinterface.h"
20 #include "yaffs_fileem.h"
22 #include "yaffs_nandemul.h"
25 #include "yaffs_guts.h"
35 char *testStr = "this is a test string";
37 char *testStr2 = "abcdefghijklmnopqrstuvwxyz1234567890";
39 void TestTimexxx(yaffs_Device *dev)
48 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
55 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
60 x = yaffs_RenameObject(yaffs_Root(dev),"Name1",NULL,"Rename");
65 void TestTimeasasas(yaffs_Device *dev)
78 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
85 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
90 x = yaffs_RenameObject(yaffs_Root(dev),"Name1",NULL,"Rename");
94 for(i = 0; i < 10000; i+=20)
99 written = yaffs_WriteDataToFile(f,testStr,i,strlen(testStr));
101 written = yaffs_WriteDataToFile(f,testStr2,i,strlen(testStr2));
105 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
111 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
113 yaffs_ReadDataFromFile(f,data,1000,50);
116 printf("Read data is \"%s\"\n",data);
120 printf("Resize to 3000\n");
121 yaffs_ResizeFile(f,3000);
122 printf("Resize to 2048\n");
123 yaffs_ResizeFile(f,2048);
134 void TestTimeBigDeletes(yaffs_Device *dev)
143 yaffs_Object *d, *df;
154 printf("Exisiting objects\n");
155 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
156 printf("Exisiting objects in lost+found\n");
157 lnf = yaffs_FindObjectByName(yaffs_Root(dev),YAFFS_LOSTNFOUND_NAME);
158 yaffs_ApplyToDirectoryChildren(lnf,yaffs_DumpObject);
164 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
171 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
175 for(i = 0; i < 100000; i+=20)
180 written = yaffs_WriteDataToFile(f,testStr,i,strlen(testStr));
182 written = yaffs_WriteDataToFile(f,testStr2,i,strlen(testStr2));
188 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
195 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
199 for(i = 0; i < 100000; i+=20)
204 written = yaffs_WriteDataToFile(f,testStr,i,strlen(testStr));
206 written = yaffs_WriteDataToFile(f,testStr2,i,strlen(testStr2));
212 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
219 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
223 for(i = 0; i < 100000; i+=20)
228 written = yaffs_WriteDataToFile(f,testStr,i,strlen(testStr));
230 written = yaffs_WriteDataToFile(f,testStr2,i,strlen(testStr2));
238 void TestTime(yaffs_Device *dev)
247 yaffs_Object *d, *df;
258 printf("Exisiting objects\n");
259 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
260 printf("Exisiting objects in lost+found\n");
261 lnf = yaffs_FindObjectByName(yaffs_Root(dev),YAFFS_LOSTNFOUND_NAME);
262 yaffs_ApplyToDirectoryChildren(lnf,yaffs_DumpObject);
267 // Test the problem of:
270 // Create file with same name
271 // Delete file <== crash
273 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
280 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
283 yaffs_Unlink(yaffs_Root(dev),"Name1");
286 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
293 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
296 yaffs_Unlink(yaffs_Root(dev),"Name1");
302 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
309 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
314 x = yaffs_RenameObject(yaffs_Root(dev),"Name1",NULL,"Rename");
316 for(i = 0; i < 100000; i+=20)
321 written = yaffs_WriteDataToFile(f,testStr,i,strlen(testStr));
323 written = yaffs_WriteDataToFile(f,testStr2,i,strlen(testStr2));
326 for(i = 1000; i < 50000; i+=2)
328 yaffs_ReadDataFromFile(f,data,i,20);
332 yaffs_ReadDataFromFile(f,data,1000,50);
335 printf("Read data is \"%s\"\n",data);
337 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
338 yaffs_ReadDataFromFile(f,data,1000,50);
341 printf("Read data is \"%s\"\n",data);
346 yaffs_ReadDataFromFile(f,data,1000,50);
349 printf("Read data is \"%s\"\n",data);
351 printf("File length is %d\n",yaffs_GetObjectFileLength(f));
353 sl = yaffs_MknodSymLink(yaffs_Root(dev),"sym-link",0,0,0,"/tmp/alias");
354 yaffs_ReadDataFromFile(f,data,1000,50);
357 printf("Read data is \"%s\"\n",data);
360 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
362 printf("\n\nsymlink alias is \"%s\"\n",alias = yaffs_GetSymlinkAlias(sl));
366 printf("Unlink symlink %d\n",yaffs_Unlink(yaffs_Root(dev),"sym-link"));
369 yaffs_ReadDataFromFile(f,data,1000,50);
372 printf("Read data is \"%s\"\n",data);
376 printf("Resize 3000\n");
377 yaffs_ResizeFile(f,3000);
379 printf("Resize 2050\n");
380 yaffs_ResizeFile(f,2050);
381 printf("Resize 2049\n");
382 yaffs_ResizeFile(f,2049);
383 printf("Resize 2048\n");
384 yaffs_ResizeFile(f,2048);
387 printf("Resize 2000\n");
388 yaffs_ResizeFile(f,2000);
392 lnf = yaffs_FindObjectByName(yaffs_Root(dev),YAFFS_LOSTNFOUND_NAME);
399 printf("Unlink file: %d\n",yaffs_Unlink(yaffs_Root(dev),"Rename"));
403 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
405 // Create a directory and play with it
408 printf("Find or Create directory and play with it\n");
409 d = yaffs_FindObjectByName(yaffs_Root(dev),"direct");
412 d = yaffs_MknodDirectory(yaffs_Root(dev),"direct",0,0,0);
414 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
415 yaffs_ApplyToDirectoryChildren(d,yaffs_DumpObject);
417 printf("Make file in directory\n");
419 df = yaffs_MknodFile(d,"file-in-directory",0,0,0);
420 yaffs_ApplyToDirectoryChildren(d,yaffs_DumpObject);
423 // Do some stuff with hardlinks
425 // NB Deleting hardlinked objects can mess up pointers to hardlinks.
426 // The mechanism is as follows:
427 // * If you unlink a file,softlink or directory that has one or more hardlinks,
428 // then the object is renamed to one of the hardlinks and that hardlink is unlinked.
429 // This means that a pointer to a hardlink so deleted will point to an invalid address.
430 // Thus, make sure that pointers to hardlinks are immediately dereferenced.
433 printf("Hard link tests\n");
435 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
436 hl1 = yaffs_Link(yaffs_Root(dev),"HardLink 1",f);
437 hl2 = yaffs_Link(yaffs_Root(dev),"HardLink 2",f);
438 hl3 = yaffs_Link(yaffs_Root(dev),"HardLink 3",hl2);
440 printf("\n\nHard links created\n");
441 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
443 yaffs_Unlink(yaffs_Root(dev),"HardLink 1");
444 printf("\n\nHard link deleted\n");
445 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
447 yaffs_Unlink(yaffs_Root(dev),"Name1");
448 printf("\n\nHard linked file deleted\n");
449 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
451 yaffs_Unlink(yaffs_Root(dev),"HardLink 2");
452 printf("\n\nHard link 2 deleted\n");
453 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
455 yaffs_Unlink(yaffs_Root(dev),"HardLink 3");
457 printf("\n\nHard link 3 deleted\n");
458 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
460 // NB We don't allow unlinking or rename of the root or lost+found
461 // We allow setting attributes, but these must not be written to
462 // NAND since they are not real objects.
464 printf("Attempt to rename lost+found - should have failed\n");
465 x = yaffs_RenameObject(yaffs_Root(dev),YAFFS_LOSTNFOUND_NAME,NULL,"Renamed");
466 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
468 f = yaffs_MknodFile(yaffs_Root(dev),"pfile",0,0,0);
471 yaffs_WriteDataToFile(f,testStr,0,strlen(testStr));
474 yaffs_Link(yaffs_Root(dev),"phl4",f);
477 void TestTimeDeleteFocussed(yaffs_Device *dev)
489 printf("Exisiting objects\n");
490 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
491 printf("Exisiting objects in lost+found\n");
492 lnf = yaffs_FindObjectByName(yaffs_Root(dev),YAFFS_LOSTNFOUND_NAME);
493 yaffs_ApplyToDirectoryChildren(lnf,yaffs_DumpObject);
500 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
507 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
512 x = yaffs_RenameObject(yaffs_Root(dev),"Name1",NULL,"Rename");
514 for(i = 0; i < 100000; i+=20)
519 written = yaffs_WriteDataToFile(f,testStr,i,strlen(testStr));
521 written = yaffs_WriteDataToFile(f,testStr2,i,strlen(testStr2));
529 printf("Unlink file: %d\n",yaffs_Unlink(yaffs_Root(dev),"Rename"));
531 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
535 void TestTimeTnodeFocussed(yaffs_Device *dev)
547 printf("Exisiting objects\n");
548 yaffs_ApplyToDirectoryChildren(yaffs_Root(dev),yaffs_DumpObject);
549 printf("Exisiting objects in lost+found\n");
550 lnf = yaffs_FindObjectByName(yaffs_Root(dev),YAFFS_LOSTNFOUND_NAME);
551 yaffs_ApplyToDirectoryChildren(lnf,yaffs_DumpObject);
558 f = yaffs_FindObjectByName(yaffs_Root(dev),"Name1");
565 f = yaffs_MknodFile(yaffs_Root(dev),"Name1",0,0,0);
570 x = yaffs_RenameObject(yaffs_Root(dev),"Name1",NULL,"Rename");
572 for(i = 0; i < 10000; i+=20)
577 written = yaffs_WriteDataToFile(f,testStr,0,strlen(testStr));
579 written = yaffs_WriteDataToFile(f,testStr2,0,strlen(testStr2));
584 int main(int argc,char *argv[])
590 nBlocks =(32 * 1024 * 1024) / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK) ;
591 device.writeChunkToNAND = yaffs_FEWriteChunkToNAND;
592 device.readChunkFromNAND = yaffs_FEReadChunkFromNAND;
593 device.eraseBlockInNAND = yaffs_FEEraseBlockInNAND;
594 device.initialiseNAND = yaffs_FEInitialiseNAND;
596 printf("Testing on file emulation\n");
598 nBlocks = (2 * 1024 * 1024) / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
599 device.writeChunkToNAND = nandemul_WriteChunkToNAND;
600 device.readChunkFromNAND = nandemul_ReadChunkFromNAND;
601 device.eraseBlockInNAND = nandemul_EraseBlockInNAND;
602 device.initialiseNAND = nandemul_InitialiseNAND;
604 printf("Testing on RAM emulation\n");
608 device.startBlock = YAFFS_START; // Don't use block 0
609 device.endBlock = YAFFS_END;
611 device.startBlock = 1; // Don't use block 0
612 device.endBlock = nBlocks;
615 yaffs_GutsInitialise(&device);
619 TestTimeBigDeletes(&device);
621 printf("Cache hits %d\n",device.cacheHits);
622 printf("Retired blocks %d\n",device.nRetiredBlocks);