return true;
}
+/**
+ * Check the filesystem.
+ * \return true if ok, false on errors.
+ */
+bool battfs_fsck(struct BattFsSuper *disk)
+{
+ #define FSCHECK(cond) do { if(!(cond)) { LOG_ERR("\"" #cond "\"\n"); return false; } } while (0)
+
+ FSCHECK(disk->free_page_start <= disk->page_count);
+ FSCHECK(disk->data_size < disk->page_size);
+ FSCHECK(disk->free_bytes <= disk->disk_size);
+
+ disk_size_t free_bytes = 0;
+ BattFsPageHeader hdr, prev_hdr;
+ inode_t files = 0;
+ pgcnt_t page_used = 0;
+
+ bool start = true;
+
+ for (pgcnt_t page = 0; page < disk->page_count; page++)
+ {
+ FSCHECK(readHdr(disk, disk->page_array[page], &hdr));
+ free_bytes += disk->data_size;
+
+ if (page < disk->free_page_start)
+ {
+ FSCHECK(computeFcs(&hdr) == hdr.fcs);
+ page_used++;
+ free_bytes -= hdr.fill;
+ if (hdr.inode != prev_hdr.inode || start)
+ {
+ if (LIKELY(!start))
+ FSCHECK(hdr.inode > prev_hdr.inode);
+ else
+ start = false;
+
+ FSCHECK(hdr.pgoff == 0);
+ files++;
+ }
+ else
+ {
+ FSCHECK(hdr.fill != 0);
+ FSCHECK(prev_hdr.fill == disk->data_size);
+ FSCHECK(hdr.pgoff == prev_hdr.pgoff + 1);
+ }
+ prev_hdr = hdr;
+ }
+ }
+
+ FSCHECK(page_used == disk->free_page_start);
+ FSCHECK(free_bytes == disk->free_bytes);
+
+ return true;
+}
+
/**
* Flush file \a fd.
* \return 0 if ok, EOF on errors.
fdb->disk->cache_dirty = true;
}
setBufferHdr(fdb->disk, &curr_hdr);
- flushBuffer(fdb->disk);
-
- /* Fill page buffer with 0 to avoid filling unused pages with garbage */
- for (pgaddr_t off = 0; off < fdb->disk->data_size; off++)
- {
- if (fdb->disk->bufferWrite(fdb->disk, off, &dummy, 1) != 1)
- {
- #warning TODO set error?
- }
- }
/* Allocate the missing pages first. */
pgoff_t missing_pages = fd->seek_pos / fdb->disk->data_size - fdb->max_off;
- LOG_INFO("missing pages: %d\n", missing_pages);
- while (missing_pages--)
+ if (missing_pages)
{
- zero_bytes = MIN((kfile_off_t)fdb->disk->data_size, fd->seek_pos - fd->size);
- /* Get the new page needed */
- if (!getNewPage(fdb->disk, (fdb->start - fdb->disk->page_array) + fdb->max_off + 1, fdb->inode, fdb->max_off + 1, &curr_hdr))
- return total_write;
+ LOG_INFO("missing pages: %d\n", missing_pages);
+ flushBuffer(fdb->disk);
+
+ /* Fill page buffer with 0 to avoid filling unused pages with garbage */
+ for (pgaddr_t off = 0; off < fdb->disk->data_size; off++)
+ {
+ if (fdb->disk->bufferWrite(fdb->disk, off, &dummy, 1) != 1)
+ {
+ #warning TODO set error?
+ }
+ }
- /* Update size and free space left */
- fd->size += zero_bytes;
- fdb->disk->free_bytes -= zero_bytes;
+ while (missing_pages--)
+ {
+ zero_bytes = MIN((kfile_off_t)fdb->disk->data_size, fd->seek_pos - fd->size);
+ /* Get the new page needed */
+ if (!getNewPage(fdb->disk, (fdb->start - fdb->disk->page_array) + fdb->max_off + 1, fdb->inode, fdb->max_off + 1, &curr_hdr))
+ return total_write;
- curr_hdr.fill = zero_bytes;
- setBufferHdr(fdb->disk, &curr_hdr);
+ /* Update size and free space left */
+ fd->size += zero_bytes;
+ fdb->disk->free_bytes -= zero_bytes;
- fdb->max_off++;
+ curr_hdr.fill = zero_bytes;
+ setBufferHdr(fdb->disk, &curr_hdr);
+
+ fdb->max_off++;
+ }
}
}
else if (!getBufferHdr(fdb->disk, &curr_hdr))