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;
}
void short_scan_test(const char *path, int fsize, int niterations)
{
int i;
char fn[100];
sprintf(fn,"%s/%s",path,"f1");
yaffs_StartUp();
for(i = 0; i < niterations; i++)
{
printf("\n*****************\nIteration %d\n",i);
yaffs_mount(path);
printf("\nmount: Directory look-up of %s\n",path);
dumpDir(path);
make_a_file(fn,1,fsize);
yaffs_unmount(path);
}
}
void cmd_yaffs_write_file(char *yaffsName, char bval, int sizeOfFile)
{
make_a_file(yaffsName, bval, sizeOfFile);
}