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Fix SCSI off-by-one device size.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2091 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-08-06 11:31:06 +00:00
parent 6eb5733a3c
commit 51c1ebb1bc
1 changed files with 15 additions and 9 deletions
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24
hw/scsi-disk.c
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@ -348,15 +348,21 @@ int32_t scsi_send_command(SCSIDevice *s, uint32_t tag, uint8_t *buf, int lun)
/* The normal LEN field for this command is zero. */
memset(s->buf, 0, 8);
bdrv_get_geometry(s->bdrv, &nb_sectors);
s->buf[0] = (nb_sectors >> 24) & 0xff;
s->buf[1] = (nb_sectors >> 16) & 0xff;
s->buf[2] = (nb_sectors >> 8) & 0xff;
s->buf[3] = nb_sectors & 0xff;
s->buf[4] = 0;
s->buf[5] = 0;
s->buf[6] = s->cluster_size * 2;
s->buf[7] = 0;
s->buf_len = 8;
/* Returned value is the address of the last sector. */
if (nb_sectors) {
nb_sectors--;
s->buf[0] = (nb_sectors >> 24) & 0xff;
s->buf[1] = (nb_sectors >> 16) & 0xff;
s->buf[2] = (nb_sectors >> 8) & 0xff;
s->buf[3] = nb_sectors & 0xff;
s->buf[4] = 0;
s->buf[5] = 0;
s->buf[6] = s->cluster_size * 2;
s->buf[7] = 0;
s->buf_len = 8;
} else {
scsi_command_complete(s, SENSE_NOT_READY);
}
break;
case 0x08:
case 0x28: