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scsi-generic: Add share-rw option 

Add the property to the device model, then parse it by calling
blkconf_apply_backend_options().

In addition to blk_set_perm(), the called function also handles error
options and wce. For error options we've already checked that the
default values are used, for wce we don't have the option either so it
is always the default (true). In other words there is no change of
behavior in these regards.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20171205151553.7834-1-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2017-12-05 23:15:53 +08:00 committed by Paolo Bonzini
parent 997eba28a3
commit d9bcd6f7f2
1 changed files with 9 additions and 0 deletions
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9
hw/scsi/scsi-generic.c
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@ -482,6 +482,7 @@ static void scsi_generic_realize(SCSIDevice *s, Error **errp)
int rc;
int sg_version;
struct sg_scsi_id scsiid;
Error *local_err = NULL;
if (!s->conf.blk) {
error_setg(errp, "drive property not set");
@ -515,6 +516,13 @@ static void scsi_generic_realize(SCSIDevice *s, Error **errp)
error_setg(errp, "SG_GET_SCSI_ID ioctl failed");
return;
}
blkconf_apply_backend_options(&s->conf,
blk_is_read_only(s->conf.blk),
true, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
/* define device state */
s->type = scsiid.scsi_type;
@ -565,6 +573,7 @@ static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
static Property scsi_generic_properties[] = {
DEFINE_PROP_DRIVE("drive", SCSIDevice, conf.blk),
DEFINE_PROP_BOOL("share-rw", SCSIDevice, conf.share_rw, false),
DEFINE_PROP_END_OF_LIST(),
};