Enabled recognition of CD drive at /dev/vda of Linux guest on qemu virtio

1.1.8
Thomas Schmitt 11 years ago
parent b4ff95c2e7
commit cc65aa9df6
  1. 2
      cdrskin/cdrskin_timestamp.h
  2. 80
      libburn/sg-linux.c

@ -1 +1 @@
#define Cdrskin_timestamP "2011.11.03.130710"
#define Cdrskin_timestamP "2011.11.09.111408"

@ -391,6 +391,77 @@ static int sgio_test(int fd)
}
static int sgio_inquiry_cd_drive(int fd, char *fname)
{
unsigned char test_ops[] = { 0x12, 0, 0, 0, 36, 0 };
sg_io_hdr_t s;
struct buffer *buf = NULL;
unsigned char *sense = NULL;
char *msg = NULL, *msg_pt;
int ret = 0, i;
BURN_ALLOC_MEM(buf, struct buffer, 1);
BURN_ALLOC_MEM(sense, unsigned char, 128);
BURN_ALLOC_MEM(msg, char, strlen(fname) + 1024);
memset(&s, 0, sizeof(sg_io_hdr_t));
s.interface_id = 'S';
s.dxfer_direction = SG_DXFER_FROM_DEV;
s.cmd_len = 6;
s.cmdp = test_ops;
s.mx_sb_len = 32;
s.sbp = sense;
s.timeout = 30000;
s.dxferp = buf;
s.dxfer_len = 36;
s.usr_ptr = NULL;
ret = ioctl(fd, SG_IO, &s);
if (ret == -1) {
sprintf(msg,
"INQUIRY on '%s' : ioctl(SG_IO) failed , errno= %d",
fname, errno);
libdax_msgs_submit(libdax_messenger, -1, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0);
goto ex;
}
if (s.sb_len_wr > 0 || s.host_status != Libburn_sg_host_oK ||
s.driver_status != Libburn_sg_driver_oK) {
sprintf(msg, "INQUIRY failed on '%s' : host_status= %hd , driver_status= %hd", fname, s.host_status, s.driver_status);
if (s.sb_len_wr > 0) {
sprintf(msg + strlen(msg), " , sense data=");
msg_pt = msg + strlen(msg);
for (i = 0 ; i < s.sb_len_wr; i++)
sprintf(msg_pt + i * 3, " %2.2X", s.sbp[i]);
}
libdax_msgs_submit(libdax_messenger, -1, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0);
ret = -1;
goto ex;
}
ret = 0;
if (buf->data[0] == 0x5) {
/* Peripheral qualifier 0, device type 0x5 = CD/DVD device.
SPC-3 tables 82 and 83 */
ret = 1;
} else {
sprintf(msg, "INQUIRY on '%s' : byte 0 = 0x%2.2X",
fname, buf->data[0]);
libdax_msgs_submit(libdax_messenger, -1, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0);
}
ex:;
BURN_FREE_MEM(msg);
BURN_FREE_MEM(sense);
BURN_FREE_MEM(buf);
return ret;
}
/* ts A60924 */
static int sg_handle_busy_device(char *fname, int os_errno)
{
@ -869,6 +940,15 @@ static int is_scsi_drive(char *fname, int fd_in, int *bus_no, int *host_no,
}
if (sid_ret == -1) {
/* ts B11109 : Try device type from INQUIRY byte 0 */
if (sgio_inquiry_cd_drive(fd, fname) == 1) {
sid_ret = 0;
sid.scsi_type = TYPE_ROM;
}
}
#ifdef SCSI_IOCTL_GET_BUS_NUMBER
/* Hearsay A61005 */
if (ioctl(fd, SCSI_IOCTL_GET_BUS_NUMBER, bus_no) == -1)

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