void affstats(const char *fname)
{
AFFILE *af = af_open(fname,O_RDONLY,0);
if(!af) af_err(1,"af_open(%s)",fname);
printf("%s\t",fname);
uint32_t segsize=0;
int64_t imagesize=0;
int64_t blanksectors=0;
int64_t badsectors=0;
af_get_segq(af,AF_IMAGESIZE,&imagesize);
if(af_get_seg(af,AF_PAGESIZE,&segsize,0,0)){
af_get_seg(af,AF_SEGSIZE_D,&segsize,0,0); // check for oldstype
}
af_get_segq(af,AF_BADSECTORS,&badsectors);
af_get_segq(af,AF_BLANKSECTORS,&blanksectors);
print_size(imagesize);
printf("\t");
fflush(stdout);
int64_t compressed_bytes = 0;
int64_t uncompressed_bytes = 0;
/* Now read through all of the segments and count the number of
* data segments. We know the uncompressed size...
*/
af_rewind_seg(af);
char segname[AF_MAX_NAME_LEN+1];
size_t datalen;
while(af_get_next_seg(af,segname,sizeof(segname),0,0,&datalen)==0){
int64_t page_num = af_segname_page_number(segname);
if(page_num>=0){
compressed_bytes += datalen;
uncompressed_bytes += segsize;
}
}
if(uncompressed_bytes > imagesize) uncompressed_bytes = imagesize;
print_size(compressed_bytes);
printf("\t");
print_size(uncompressed_bytes);
printf(" %" I64d " %" I64d,blanksectors,badsectors);
putchar('\n');
}
/* af_read_sizes:
* Get the page sizes if they are set in the file.
*/
void af_read_sizes(AFFILE *af)
{
af_get_seg(af,AF_SECTORSIZE,&af->image_sectorsize,0,0);
if(af->image_sectorsize==0) af->image_sectorsize = 512; // reasonable default
if(af_get_seg(af,AF_PAGESIZE,&af->image_pagesize,0,0)){
af_get_seg(af,AF_SEGSIZE_D,&af->image_pagesize,0,0); // try old name
}
/* Read the badflag if it is present */
size_t sectorsize = af->image_sectorsize;
if(af->badflag==0) af->badflag = (unsigned char *)malloc(sectorsize);
if(af_get_seg(af,AF_BADFLAG,0,af->badflag,(size_t *)§orsize)==0){
af->badflag_set = 1;
}
/* Read the image file segment if it is present.
* If it isn't, scan through the disk image to figure out the size of the disk image.
*/
if(af_get_segq(af,AF_IMAGESIZE,(int64_t *)&af->image_size)){
/* Calculate the imagesize by scanning all of the pages that are in
* the disk image and finding the highest page number.
* Then read that page to find the last allocated byte.
*/
char segname[AF_MAX_NAME_LEN];
size_t datalen = 0;
af_rewind_seg(af); // start at the beginning
int64_t highest_page_number = 0;
while(af_get_next_seg(af,segname,sizeof(segname),0,0,&datalen)==0){
if(segname[0]==0) continue; // ignore sector
int64_t pagenum = af_segname_page_number(segname);
if(pagenum > highest_page_number) highest_page_number = pagenum;
}
size_t highest_page_len = 0;
if(af_get_page(af,highest_page_number,0,&highest_page_len)==0){
af->image_size = af->image_pagesize * highest_page_number + highest_page_len;
}
}
af->image_size_in_file = af->image_size;
}
/* afm_split_raw_setup:
* Sets up the parameters of the split-raw by reading from the metadata file.
* The advantage of doing it this way is that a new file can be opened,
* the metadata parmeters set, and then an af_write() call made, and the values.
* get copied.
*/
static int afm_split_raw_setup(AFFILE *af)
{
struct afm_private *ap = AFM_PRIVATE(af);
if(ap->sr_initialized) return 0; // already setup
/* The size of AF_PAGES_PER_RAW_IMAGE_FILE indicates whether the file is split.
* If it is not present, or if it is 0-length, assume that the file is not split.
*/
uint64_t pages_per_file = 0;
size_t len = 0;
if (af_get_seg(ap->aff,AF_PAGES_PER_RAW_IMAGE_FILE,0,0,&len)) {
/* Not in file; put it there based on maxsize and image_pagesize,
* both of which better be set at this point
*/
if (af->image_pagesize < 1) {
(*af->error_reporter)("afm_split_raw_setup: image_pagesize==0\n");
return -1;
}
if (af->maxsize % af->image_pagesize) {
(*af->error_reporter)("afm_split_raw_setup: maxsize (%"I64d") "
"not a multiple of image_pagesize (%d)\n",
af->maxsize,af->image_pagesize);
return -1;
}
pages_per_file = af->maxsize / af->image_pagesize;
if (af_update_segq (af, AF_PAGES_PER_RAW_IMAGE_FILE, pages_per_file)) {
(*af->error_reporter)("split_raw_read_write_setup: %s: failed to write %s\n",
af_filename(af), AF_PAGES_PER_RAW_IMAGE_FILE);
return -1;
}
}
/* Now, read the segment (which might have just been put there) and set up the split_raw file */
if(af_get_segq(af,AF_PAGES_PER_RAW_IMAGE_FILE,(int64_t *)&pages_per_file)){
(*af->error_reporter)("split_raw_read_write_setup: %s: failed to write %s\n",
af_filename(af), AF_PAGES_PER_RAW_IMAGE_FILE);
return -1;
}
/* Verify that splitraw's notion of the rawfilesize is the same as the
* metadata's notion if the AFF image_size has been set
*/
if (ap->aff->image_size && ap->aff->image_size != ap->sr->image_size) {
(*af->error_reporter)("afm_split_raw_setup: internal error. "
"AFF image_size %"I64d" != SR image_size %"I64d"\n",
ap->aff->image_size,ap->sr->image_size);
return -1;
}
/* Uses pages_per_file to set the maxsize of the split_raw if it hasn't been set yet*/
if(ap->sr->maxsize==0){
ap->sr->maxsize = pages_per_file * af->image_pagesize;
}
/* Verify that the parameters make sense */
if (ap->sr->maxsize != (pages_per_file * af->image_pagesize) && pages_per_file>0) {
(*af->error_reporter)("afm_split_raw_setup: %s: per size indicated by metadata (%d * %d) "
"doesn't match maxsize (%"I64d")\n",
af_filename(af),pages_per_file,af->image_pagesize,ap->sr->maxsize);
return -1;
}
/* Push down the image_pagesize from the AFM to the split_raw */
uint32_t image_pagesize = af->image_pagesize; // default to what's in memory
af_get_seg(af,AF_PAGESIZE,&image_pagesize,0,0); // get from the AFF file if possible
ap->sr->image_pagesize = af->image_pagesize; // overwrite the default with what the AFM file
ap->sr_initialized = 1;
return 0;
}