void figure(const char *fn)
{
struct af_figure_media_buf afb;
int fd = open(fn,O_RDONLY);
if(fd<0) err(1,"%s",fn);
if(af_figure_media(fd,&afb)){
err(1,"af_figure_media");
}
printf("sector size: %d\n",afb.sector_size);
printf("total sectors: %"PRId64"\n",afb.total_sectors);
printf("max read blocks: %"PRId64"\n",afb.max_read_blocks);
exit(0);
}
/* Return the size of the raw file */
static int64_t raw_filesize(AFFILE *af)
{
struct raw_private *rp = RAW_PRIVATE(af);
struct stat sb;
if(fstat(fileno(rp->raw),&sb)==0){
if(sb.st_mode & S_IFREG){ // only do this for regular files
return sb.st_size;
}
/* See if this is a device that we can figure */
struct af_figure_media_buf afb;
if(af_figure_media(fileno(rp->raw),&afb)==0){
if(afb.total_sectors>0 && afb.sector_size>0){
return afb.total_sectors * afb.sector_size;
}
}
}
return 0; // no clue
}
static int raw_vstat(AFFILE *af,struct af_vnode_info *vni)
{
struct raw_private *rp = RAW_PRIVATE(af);
vni->imagesize = -1;
vni->pagesize = RAW_PAGESIZE; // decent page size
vni->supports_metadata = 0;
vni->changable_pagesize = 1; // change it at any time
vni->changable_sectorsize = 1; // change it at any time
/* If we can stat the file, use that. */
fflush(rp->raw);
struct stat sb;
if(fstat(fileno(rp->raw),&sb)==0){
if(sb.st_mode & S_IFREG){ // only do this for regular files
vni->imagesize = sb.st_size;
}
}
if(vni->imagesize==-1){
/* See if this is a device that we can figure */
struct af_figure_media_buf afb;
if(af_figure_media(fileno(rp->raw),&afb)==0){
if(afb.total_sectors>0 && afb.sector_size>0){
vni->imagesize = afb.total_sectors * afb.sector_size;
}
}
}
vni->supports_compression = 0;
vni->has_pages = 1;
if(rp->raw_popen){
/* popen files require special handling */
vni->has_pages = 0;
vni->use_eof = 1;
vni->at_eof = feof(rp->raw); // are we there yet?
}
return 0;
}
