* Copyright (C) 2009 The Regents of the University of California
* Written by Michael Vrable <mvrable@cs.ucsd.edu>
*
- * TODO: Licensing
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*/
#include <stdint.h>
&& lastblock_old < BLUESKY_BLOCK_SIZE) {
bluesky_block_touch(inode, inode->blocks->len - 1, TRUE);
gsize old_size = b->dirty->len;
- g_warn_if_fail(lastblock_old != old_size);
+ if (lastblock_old != old_size) {
+ fprintf(stderr,
+ "Warning: last block size = %zd, expected %d\n",
+ old_size, lastblock_old);
+ }
bluesky_string_resize(b->dirty, BLUESKY_BLOCK_SIZE);
memset(&b->dirty->data[old_size], 0,
BLUESKY_BLOCK_SIZE - old_size);
if (len == 0)
return;
- // TODO: Optimization: If we are entirely overwriting a block we don't need
- // to fetch it frm storage first. We don't yet handle the case where the
- // partial last block of a file is entirely overwritten.
while (len > 0) {
uint64_t block_num = offset / BLUESKY_BLOCK_SIZE;
gint block_offset = offset % BLUESKY_BLOCK_SIZE;
gint bytes = MIN(BLUESKY_BLOCK_SIZE - block_offset, len);
gboolean preserve = TRUE;
- if (block_offset == 0 && bytes == BLUESKY_BLOCK_SIZE) {
+ gsize block_size = BLUESKY_BLOCK_SIZE;
+ if (block_num == inode->blocks->len - 1) {
+ block_size = inode->size - block_num * BLUESKY_BLOCK_SIZE;
+ }
+ if (block_offset == 0 && bytes == block_size) {
preserve = FALSE;
}
bluesky_block_touch(inode, block_num, preserve);