#define MAX_SB 64 // sense block maximum return size
struct sgio_cmd {
- unsigned char cdb[16]; // increase to support 16 byte commands
+ unsigned char cdb[16]; // enhanced from 10 to support 16 byte commands
unsigned char sb[MAX_SB]; // add sense block to commands
int nr;
};
* blocks on medium.
*/
if (hdr->dxfer_direction != SG_DXFER_NONE) {
-
if (lba < MAX_10B_LBA) {
hdr->cmdp[2] = (unsigned char) ((lba >> 24) & 0xff);
hdr->cmdp[3] = (unsigned char) ((lba >> 16) & 0xff);
}
*bs = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
- *max_lba = ((buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]) & 0x00000000FFFFFFFFULL; // for some reason max_lba is being sign extended even though unsigned.
-
+ *max_lba = ((buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]) & MAX_10B_LBA; // for some reason max_lba is being sign extended even though unsigned.
/*
- * If max lba is 0xFFFFFFFF, then need to retry with
- * 16 byteread capacity
+ * If max lba masked by MAX_10B_LBA equals MAX_10B_LBA,
+ * then need to retry with 16 byte Read Capacity command.
*/
if (*max_lba == MAX_10B_LBA) {
hdr.cmd_len = 16;
unsigned int bs = 0;
unsigned long long max_lba = 0;
-
if (f->filetype == FIO_TYPE_BD) {
if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
td_verror(td, errno, "ioctl");
MAX_10B_LBA, max_lba);
}
-
if (f->filetype == FIO_TYPE_BD) {
td->io_ops->getevents = NULL;
td->io_ops->event = NULL;
.cleanup = fio_sgio_cleanup,
.open_file = fio_sgio_open,
.close_file = generic_close_file,
- .get_file_size = fio_sgio_get_file_size, // generic_get_file_size
+ .get_file_size = fio_sgio_get_file_size,
.flags = FIO_SYNCIO | FIO_RAWIO,
};