dtest.c

这是ARM yaffs文件系统

	dumpDir("/boot");
	printf("\nDirectory look-up of /boot/directory1\n");
	dumpDir("/boot/directory1");
	
	// Delete file first, then rmdir should work
	r = yaffs_unlink("/boot/directory1/file with a long name");
	r = yaffs_rmdir("/boot/directory1");
	
	
	printf("\nDirectory look-up of /boot\n");
	dumpDir("/boot");
	printf("\nDirectory look-up of /boot/directory1\n");
	dumpDir("/boot/directory1");

#if 0
	fill_disk_and_delete("/boot",20,20);
			
	printf("\nDirectory look-up of /boot\n");
	dumpDir("/boot");
#endif

	yaffs_symlink("yyfile","/boot/slink");
	
	yaffs_readlink("/boot/slink",str,100);
	printf("symlink alias is %s\n",str);
	
	
	
	
	printf("\nDirectory look-up of /boot\n");
	dumpDir("/boot");
	printf("\nDirectory look-up of /boot (using stat instead of lstat)\n");
	dumpDirFollow("/boot");
	printf("\nDirectory look-up of /boot/directory1\n");
	dumpDir("/boot/directory1");

	h = yaffs_open("/boot/slink",O_RDWR,0);
	
	printf("file length is %d\n",(int)yaffs_lseek(h,0,SEEK_END));
	
	yaffs_close(h);
	
	yaffs_unlink("/boot/slink");

	
	printf("\nDirectory look-up of /boot\n");
	dumpDir("/boot");
	
	// Check chmod
	
	yaffs_stat("/boot/yyfile",&ystat);
	temp_mode = ystat.st_mode;
	
	yaffs_chmod("/boot/yyfile",0x55555);
	printf("\nDirectory look-up of /boot\n");
	dumpDir("/boot");
	
	yaffs_chmod("/boot/yyfile",temp_mode);
	printf("\nDirectory look-up of /boot\n");
	dumpDir("/boot");
	
	// Permission checks...
	PermissionsCheck("/boot/yyfile",0, O_WRONLY,0);
	PermissionsCheck("/boot/yyfile",0, O_RDONLY,0);
	PermissionsCheck("/boot/yyfile",0, O_RDWR,0);

	PermissionsCheck("/boot/yyfile",S_IREAD, O_WRONLY,0);
	PermissionsCheck("/boot/yyfile",S_IREAD, O_RDONLY,1);
	PermissionsCheck("/boot/yyfile",S_IREAD, O_RDWR,0);

	PermissionsCheck("/boot/yyfile",S_IWRITE, O_WRONLY,1);
	PermissionsCheck("/boot/yyfile",S_IWRITE, O_RDONLY,0);
	PermissionsCheck("/boot/yyfile",S_IWRITE, O_RDWR,0);
	
	PermissionsCheck("/boot/yyfile",S_IREAD | S_IWRITE, O_WRONLY,1);
	PermissionsCheck("/boot/yyfile",S_IREAD | S_IWRITE, O_RDONLY,1);
	PermissionsCheck("/boot/yyfile",S_IREAD | S_IWRITE, O_RDWR,1);

	yaffs_chmod("/boot/yyfile",temp_mode);
	
	//create a zero-length file and unlink it (test for scan bug)
	
	h = yaffs_open("/boot/zlf",O_CREAT | O_TRUNC | O_RDWR,0);
	yaffs_close(h);
	
	yaffs_unlink("/boot/zlf");
	
	
	yaffs_DumpDevStruct("/boot");
	
	fill_disk_and_delete("/boot",20,20);
	
	yaffs_DumpDevStruct("/boot");
	
	fill_files("/boot",1,10000,0);
	fill_files("/boot",1,10000,5000);
	fill_files("/boot",2,10000,0);
	fill_files("/boot",2,10000,5000);
	
	leave_unlinked_file("/data",20000,0);
	leave_unlinked_file("/data",20000,5000);
	leave_unlinked_file("/data",20000,5000);
	leave_unlinked_file("/data",20000,5000);
	leave_unlinked_file("/data",20000,5000);
	leave_unlinked_file("/data",20000,5000);
	
	yaffs_DumpDevStruct("/boot");
	yaffs_DumpDevStruct("/data");
	
		
		
	return 0;

}

int huge_directory_test_on_path(char *path)
{

	yaffs_DIR *d;
	yaffs_dirent *de;
	struct yaffs_stat s;

	int f;
	int i;
	int r;
	int total = 0;
	int lastTotal = 0;
	char buffer[20];
	
	char str[100];
	char name[100];
	char name2[100];
	
	int h;
	mode_t temp_mode;
	struct yaffs_stat ystat;
	
	yaffs_StartUp();
	
	yaffs_mount(path);
	
	// Create a large number of files
	
	for(i = 0; i < 2000; i++)
	{
	  sprintf(str,"%s/%d",path,i);
	  
	   f = yaffs_open(str,O_CREAT,S_IREAD | S_IWRITE);
	   yaffs_close(f);
	}
	
	
	
	d = yaffs_opendir(path);
	i = 0;
	if (d) {
	while((de = yaffs_readdir(d)) != NULL) {
	if (total >lastTotal+100*9*1024||(i & 1023)==0){
	printf("files = %d, total = %d\n",i, total);
	lastTotal = total;
	}
		i++;
		sprintf(str,"%s/%s",path,de->d_name);
		yaffs_lstat(str,&s);
		switch(s.st_mode & S_IFMT){
		case S_IFREG:
	//printf("data file");
	total += s.st_size;
	break;
	}
	}
	
	yaffs_closedir(d);
	}
	
	return 0;
}

int yaffs_scan_test(const char *path)
{
}


void rename_over_test(const char *mountpt)
{
	int i;
	char a[100];
	char b[100];
	
	sprintf(a,"%s/a",mountpt);
	sprintf(b,"%s/b",mountpt);
	
	yaffs_StartUp();
	
	yaffs_mount(mountpt);
	i = yaffs_open(a,O_CREAT | O_TRUNC | O_RDWR, 0); 
	yaffs_close(i);
	i = yaffs_open(b,O_CREAT | O_TRUNC | O_RDWR, 0);
	yaffs_close(i);
	yaffs_rename(a,b); // rename over
	yaffs_rename(b,a); // rename back again (not renaimng over)
	yaffs_rename(a,b); // rename back again (not renaimng over)
	
	
	yaffs_unmount(mountpt);
	
}

int resize_stress_test(const char *path)
{
   int a,b,i,j;
   int x;
   int r;
   char aname[100];
   char bname[100];
   
   char abuffer[1000];
   char bbuffer[1000];
   
   yaffs_StartUp();
   
   yaffs_mount(path);
   
   sprintf(aname,"%s%s",path,"/a");
   sprintf(bname,"%s%s",path,"/b");
   
   memset(abuffer,'a',1000);
   memset(bbuffer,'b',1000);
   
   a = yaffs_open(aname, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
   b = yaffs_open(bname, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
   
   printf(" %s %d %s %d\n",aname,a,bname,b);
  
   x = 0;
   
   for(j = 0; j < 100; j++)
   {
		yaffs_lseek(a,0,SEEK_END);

		
		for(i = 0; i <20000; i++)
		{
		   //r =        yaffs_lseek(b,i,SEEK_SET);
			//r = yaffs_write(b,bbuffer,1000);
			
			if(x & 0x16)
			{
				// shrink
				int syz = yaffs_lseek(a,0,SEEK_END);
				
				syz -= 500;
				if(syz < 0) syz = 0;
				yaffs_truncate(a,syz);
				
			}
			else
			{
				//expand
				r = yaffs_lseek(a,i * 500,SEEK_SET);
				r = yaffs_write(a,abuffer,1000);
			}
			x++;
			
		}
   }
   
   return 0;
   
}


int resize_stress_test_no_grow_complex(const char *path,int iters)
{
   int a,b,i,j;
   int x;
   int r;
   char aname[100];
   char bname[100];
   
   char abuffer[1000];
   char bbuffer[1000];
   
   yaffs_StartUp();
   
   yaffs_mount(path);
   
   sprintf(aname,"%s%s",path,"/a");
   sprintf(bname,"%s%s",path,"/b");
   
   memset(abuffer,'a',1000);
   memset(bbuffer,'b',1000);
   
   a = yaffs_open(aname, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
   b = yaffs_open(bname, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
   
   printf(" %s %d %s %d\n",aname,a,bname,b);
  
   x = 0;
   
   for(j = 0; j < iters; j++)
   {
		yaffs_lseek(a,0,SEEK_END);

		
		for(i = 0; i <20000; i++)
		{
		   //r =        yaffs_lseek(b,i,SEEK_SET);
			//r = yaffs_write(b,bbuffer,1000);
			
			if(!(x%20))
			{
				// shrink
				int syz = yaffs_lseek(a,0,SEEK_END);
				
				while(syz > 4000)
				{
				
					syz -= 2050;
					if(syz < 0) syz = 0;
					yaffs_truncate(a,syz);
					syz = yaffs_lseek(a,0,SEEK_END);
					printf("shrink to %d\n",syz);
				}
				
				
			}
			else
			{
				//expand
				r = yaffs_lseek(a,500,SEEK_END);
				r = yaffs_write(a,abuffer,1000);
			}
			x++;
			
					
		}
		printf("file size is %d\n",yaffs_lseek(a,0,SEEK_END));

   }
   
   return 0;
   
}

int resize_stress_test_no_grow(const char *path,int iters)
{
   int a,b,i,j;
   int x;
   int r;
   char aname[100];
   char bname[100];
   
   char abuffer[1000];
   char bbuffer[1000];
   
   yaffs_StartUp();
   
   yaffs_mount(path);
   
   sprintf(aname,"%s%s",path,"/a");
   sprintf(bname,"%s%s",path,"/b");
   
   memset(abuffer,'a',1000);
   memset(bbuffer,'b',1000);
   
   a = yaffs_open(aname, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
   b = yaffs_open(bname, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
   
   printf(" %s %d %s %d\n",aname,a,bname,b);
  
   x = 0;
   
   for(j = 0; j < iters; j++)
   {
		yaffs_lseek(a,0,SEEK_END);

		
		for(i = 0; i <20000; i++)
		{
		   //r =        yaffs_lseek(b,i,SEEK_SET);
			//r = yaffs_write(b,bbuffer,1000);
			
			if(!(x%20))
			{
				// shrink
				int syz = yaffs_lseek(a,0,SEEK_END);
				
				while(syz > 4000)
				{
				
					syz -= 2050;
					if(syz < 0) syz = 0;
					yaffs_truncate(a,syz);
					syz = yaffs_lseek(a,0,SEEK_END);
					printf("shrink to %d\n",syz);
				}
				
				
			}
			else
			{
				//expand
				r = yaffs_lseek(a,-500,SEEK_END);
				r = yaffs_write(a,abuffer,1000);
			}
			x++;
			
					
		}
		printf("file size is %d\n",yaffs_lseek(a,0,SEEK_END));

   }
   
   return 0;
   
}

int directory_rename_test(void)
{
	int r;
	yaffs_StartUp();
	
	yaffs_mount("/ram");
	yaffs_mkdir("/ram/a",0);
	yaffs_mkdir("/ram/a/b",0);
	yaffs_mkdir("/ram/c",0);
	
	printf("\nDirectory look-up of /ram\n");
	dumpDir("/ram");
	dumpDir("/ram/a");
	dumpDir("/ram/a/b");

	printf("Do rename (should fail)\n");
		
	r = yaffs_rename("/ram/a","/ram/a/b/d");
	printf("\nDirectory look-up of /ram\n");
	dumpDir("/ram");
	dumpDir("/ram/a");
	dumpDir("/ram/a/b");

	printf("Do rename (should not fail)\n");
		
	r = yaffs_rename("/ram/c","/ram/a/b/d");
	printf("\nDirectory look-up of /ram\n");
	dumpDir("/ram");
	dumpDir("/ram/a");
	dumpDir("/ram/a/b");
	
	
	return 1;
	
}

int cache_read_test(void)
{
	int a,b,c;
	int i;
	int sizeOfFiles = 500000;
	char buffer[100];
	
	yaffs_StartUp();
	
	yaffs_mount("/boot");
	
	make_a_file("/boot/a",'a',sizeOfFiles);
	make_a_file("/boot/b",'b',sizeOfFiles);

	a = yaffs_open("/boot/a",O_RDONLY,0);
	b = yaffs_open("/boot/b",O_RDONLY,0);
	c = yaffs_open("/boot/c", O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);

	do{
		i = sizeOfFiles;
		if (i > 100) i = 100;
		sizeOfFiles  -= i;
		yaffs_read(a,buffer,i);
		yaffs_read(b,buffer,i);
		yaffs_write(c,buffer,i);
	} while(sizeOfFiles > 0);
	
	
	
	return 1;
	
}

int cache_bypass_bug_test(void)
{
	// This test reporoduces a bug whereby YAFFS caching *was* buypassed
	// resulting in erroneous reads after writes.
	// This bug has been fixed.
	
	int a;
	int i;
	char buffer1[1000];
	char buffer2[1000];
	
	memset(buffer1,0,sizeof(buffer1));
	memset(buffer2,0,sizeof(buffer2));
		
	yaffs_StartUp();
	
	yaffs_mount("/boot");
	
	// Create a file of 2000 bytes.
	make_a_file("/boot/a",'X',2000);

	a = yaffs_open("/boot/a",O_RDWR, S_IREAD | S_IWRITE);
	
	// Write a short sequence to the file.
	// This will go into the cache.
	yaffs_lseek(a,0,SEEK_SET);
	yaffs_write(a,"abcdefghijklmnopqrstuvwxyz",20); 

	// Read a short sequence from the file.
	// This will come from the cache.
	yaffs_lseek(a,0,SEEK_SET);
	yaffs_read(a,buffer1,30); 

	// Read a page size sequence from the file.
	yaffs_lseek(a,0,SEEK_SET);
	yaffs_read(a,buffer2,512); 
	
	printf("buffer 1 %s\n",buffer1);
	printf("buffer 2 %s\n",buffer2);
	
	if(strncmp(buffer1,buffer2,20))
	{
		printf("Cache bypass bug detected!!!!!\n");
	}
	
	
	return 1;
}


int free_space_check(void)
{
	int f;
	
		yaffs_StartUp();
		yaffs_mount("/boot");
	    fill_disk("/boot/",2);
	    f = yaffs_freespace("/boot");
	    
	    printf("%d free when disk full\n",f);           
	    return 1;
}

int truncate_test(void)
{
	int a;
	int r;
	int i;
	int l;

	char y[10];

	yaffs_StartUp();
	yaffs_mount("/boot");

	yaffs_unlink("/boot/trunctest");
	
	a = yaffs_open("/boot/trunctest", O_CREAT | O_TRUNC | O_RDWR,  S_IREAD | S_IWRITE);
	
	yaffs_write(a,"abcdefghijklmnopqrstuvwzyz",26);
	
	yaffs_truncate(a,3);
	l= yaffs_lseek(a,0,SEEK_END);
	
	printf("truncated length is %d\n",l);

	yaffs_lseek(a,5,SEEK_SET);
	yaffs_write(a,"1",1);

	yaffs_lseek(a,0,SEEK_SET);
	
	r = yaffs_read(a,y,10);

	printf("read %d bytes:",r);

	for(i = 0; i < r; i++) printf("[%02X]",y[i]);

	printf("\n");

	return 0;

}





void fill_disk_test(const char *mountpt)
{
	int i;
	yaffs_StartUp();
	
	for(i = 0; i < 5; i++)
	{
		yaffs_mount(mountpt);
		fill_disk_and_delete(mountpt,100,i+1);
		yaffs_unmount(mountpt);
	}
	
}



void lookup_test(const char *mountpt)
{
	int i;
	int h;
	char a[100];
	char b[100];
	

	yaffs_DIR *d;
	yaffs_dirent *de;
	struct yaffs_stat s;
	char str[100];

	yaffs_StartUp();
	
	yaffs_mount(mountpt);
				
	d = yaffs_opendir(mountpt);
	
	if(!d)
	{
		printf("opendir failed\n");
	}
	else
	{
		
		for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
		{
			printf("unlinking %s\n",de->d_name);
			yaffs_unlink(de->d_name);
		}
		
		printf("%d files deleted\n",i);
	}
	
	
	for(i = 0; i < 2000; i++){
	sprintf(a,"%s/%d",mountpt,i);
		h =  yaffs_open(a,O_CREAT | O_TRUNC | O_RDWR, 0);
		yaffs_close(h);
	}

	yaffs_rewinddir(d);
	for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
	{
		printf("%d  %s\n",i,de->d_name);
	}	
	
	printf("%d files listed\n\n\n",i);
	
	yaffs_rewinddir(d);
	yaffs_readdir(d);
	yaffs_readdir(d);
	yaffs_readdir(d);
	
	for(i = 0; i < 2000; i++){
		sprintf(a,"%s/%d",mountpt,i);
		yaffs_unlink(a);
	}
	
		
	yaffs_unmount(mountpt);
	
}

void link_test(const char *mountpt)
{
	int i;
	int h;
	char a[100];
	char b[100];
	char c[100];
	
	int  f0;
	int f1;
	int f2;
	int f3;
	sprintf(a,"%s/aaa",mountpt);
	sprintf(b,"%s/bbb",mountpt);
	sprintf(c,"%s/ccc",mountpt);
	
	yaffs_StartUp();
	
	yaffs_mount(mountpt);
	
	
	h = yaffs_open(a, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
	for(i = 0; i < 100; i++)
		yaffs_write(h,a,100);
	
	yaffs_close(h);
	
	yaffs_unlink(b);
	yaffs_unlink(c);
	yaffs_link(a,b);
	yaffs_link(a,c);
	yaffs_unlink(b);
	yaffs_unlink(c);
	yaffs_unlink(a);
	
	
	yaffs_unmount(mountpt);
	yaffs_mount(mountpt);
	
	printf("link test done\n");	
	
}

void freespace_test(const char *mountpt)
{
	int i;
	int h;
	char a[100];
	char b[100];
	
	int  f0;
	int f1;
	int f2;
	int f3;
	sprintf(a,"%s/aaa",mountpt);
	
	yaffs_StartUp();
	
	yaffs_mount(mountpt);
	
	f0 = yaffs_freespace(mountpt);
	
	h = yaffs_open(a, O_CREAT | O_TRUNC | O_RDWR, S_IREAD | S_IWRITE);
	
	for(i = 0; i < 100; i++)
		yaffs_write(h,a,100);
	
	yaffs_close(h);
	
	f1 = yaffs_freespace(mountpt);
	
	yaffs_unlink(a);
	
	f2 = yaffs_freespace(mountpt);
	
		
	yaffs_unmount(mountpt);
	yaffs_mount(mountpt);
	
	f3 = yaffs_freespace(mountpt);
	
	printf("%d\n%d\n%d\n%d\n",f0, f1,f2,f3);
	
	
}