/**
* Write sector data to the offset.
*
* @fd file descriptor to write.
* @offset offset in sectors.
* @sect sectors data to be written.
*
* RETURN:
* true in success, or false.
*/
bool sector_write(int fd, u64 offset, const struct sector_data *sect)
{
ASSERT(fd > 0);
ASSERT_SECTOR_DATA(sect);
return pwrite_all(fd, sect->data, sect->size, offset * sect->size);
}
/**
* Write from sector data in units of logical block.
* Logical block size is 512 bytes.
*
* @fd file descriptor to write.
* @offset_lb offset [logical block].
* @sect sector data to be partially written.
* @idx_lb start index [logical block].
* @n_lb number of logical blocks to write.
*
* RETURN:
* true in success, or false.
*/
bool sector_write_lb(
int fd, u64 offset_lb, const struct sector_data *sect,
unsigned int idx_lb, unsigned int n_lb)
{
const ssize_t count = n_lb * LOGICAL_BLOCK_SIZE;
const off_t buf_off = idx_lb * LOGICAL_BLOCK_SIZE;
const off_t file_off = offset_lb * LOGICAL_BLOCK_SIZE;
ASSERT(fd > 0);
ASSERT_SECTOR_DATA(sect);
ASSERT(capacity_pb(sect->size, idx_lb + n_lb) == 1);
return pwrite_all(fd, sect->data + buf_off, count, file_off);
}
//------------------------------------------------
// Do one device write operation.
//
static uint64_t
write_to_device(device* dev, uint64_t offset, uint32_t size, const uint8_t* buf)
{
int fd = fd_get(dev);
if (fd == -1) {
return -1;
}
if (! pwrite_all(fd, buf, size, offset)) {
close(fd);
fprintf(stdout, "ERROR: writing %s: %d '%s'\n", dev->name, errno,
act_strerror(errno));
return -1;
}
uint64_t stop_ns = get_ns();
fd_put(dev, fd);
return stop_ns;
}