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blockdev: Disentangle BlockDriverState and DriveInfo creation 

blockdev_init() mixes up BlockDriverState and DriveInfo initialization
Finish the BlockDriverState job before starting to mess with
DriveInfo.  Easier on the eyes.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2014-09-12 21:26:21 +02:00 committed by Kevin Wolf
parent d4362d642e
commit a0f1eab157
1 changed files with 20 additions and 17 deletions
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37
blockdev.c
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@ -301,6 +301,7 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
int ro = 0;
int bdrv_flags = 0;
int on_read_error, on_write_error;
BlockDriverState *bs;
DriveInfo *dinfo;
ThrottleConfig cfg;
int snapshot = 0;
@ -456,26 +457,27 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
}
/* init */
dinfo = g_malloc0(sizeof(*dinfo));
dinfo->id = g_strdup(qemu_opts_id(opts));
dinfo->bdrv = bdrv_new(dinfo->id, &error);
if (error) {
error_propagate(errp, error);
goto bdrv_new_err;
bs = bdrv_new(qemu_opts_id(opts), errp);
if (!bs) {
goto early_err;
}
dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
dinfo->bdrv->read_only = ro;
dinfo->bdrv->detect_zeroes = detect_zeroes;
QTAILQ_INSERT_TAIL(&drives, dinfo, next);
bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
bs->read_only = ro;
bs->detect_zeroes = detect_zeroes;
bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error);
bdrv_set_on_error(bs, on_read_error, on_write_error);
/* disk I/O throttling */
if (throttle_enabled(&cfg)) {
bdrv_io_limits_enable(dinfo->bdrv);
bdrv_set_io_limits(dinfo->bdrv, &cfg);
bdrv_io_limits_enable(bs);
bdrv_set_io_limits(bs, &cfg);
}
dinfo = g_malloc0(sizeof(*dinfo));
dinfo->id = g_strdup(qemu_opts_id(opts));
dinfo->bdrv = bs;
QTAILQ_INSERT_TAIL(&drives, dinfo, next);
if (!file || !*file) {
if (has_driver_specific_opts) {
file = NULL;
@ -502,7 +504,8 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
QINCREF(bs_opts);
ret = bdrv_open(&dinfo->bdrv, file, NULL, bs_opts, bdrv_flags, drv, &error);
ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error);
assert(bs == dinfo->bdrv);
if (ret < 0) {
error_setg(errp, "could not open disk image %s: %s",
@ -511,8 +514,9 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
goto err;
}
if (bdrv_key_required(dinfo->bdrv))
if (bdrv_key_required(bs)) {
autostart = 0;
}
QDECREF(bs_opts);
qemu_opts_del(opts);
@ -520,9 +524,8 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
return dinfo;
err:
bdrv_unref(dinfo->bdrv);
bdrv_unref(bs);
QTAILQ_REMOVE(&drives, dinfo, next);
bdrv_new_err:
g_free(dinfo->id);
g_free(dinfo);
early_err: