Pull up the absorption of the qcow2-relevant command line options and the evaluation of the overlap check options in qcow2_open().
Signed-off-by: Max Reitz <mre...@redhat.com> --- block/qcow2.c | 96 +++++++++++++++++++++++++++++------------------------------ 1 file changed, 48 insertions(+), 48 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index d120494..ed88d69 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -696,6 +696,54 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, bs->encrypted = 1; } + opts = qemu_opts_create(&qcow2_runtime_opts, NULL, 0, &error_abort); + qemu_opts_absorb_qdict(opts, options, &local_err); + if (local_err) { + error_propagate(errp, local_err); + ret = -EINVAL; + goto fail; + } + + opt_overlap_check = qemu_opt_get(opts, QCOW2_OPT_OVERLAP); + opt_overlap_check_template = qemu_opt_get(opts, QCOW2_OPT_OVERLAP_TEMPLATE); + if (opt_overlap_check_template && opt_overlap_check && + strcmp(opt_overlap_check_template, opt_overlap_check)) + { + error_setg(errp, "Conflicting values for qcow2 options '" + QCOW2_OPT_OVERLAP "' ('%s') and '" QCOW2_OPT_OVERLAP_TEMPLATE + "' ('%s')", opt_overlap_check, opt_overlap_check_template); + ret = -EINVAL; + goto fail; + } + if (!opt_overlap_check) { + opt_overlap_check = opt_overlap_check_template ?: "cached"; + } + + if (!strcmp(opt_overlap_check, "none")) { + overlap_check_template = 0; + } else if (!strcmp(opt_overlap_check, "constant")) { + overlap_check_template = QCOW2_OL_CONSTANT; + } else if (!strcmp(opt_overlap_check, "cached")) { + overlap_check_template = QCOW2_OL_CACHED; + } else if (!strcmp(opt_overlap_check, "all")) { + overlap_check_template = QCOW2_OL_ALL; + } else { + error_setg(errp, "Unsupported value '%s' for qcow2 option " + "'overlap-check'. Allowed are either of the following: " + "none, constant, cached, all", opt_overlap_check); + ret = -EINVAL; + goto fail; + } + + s->overlap_check = 0; + for (i = 0; i < QCOW2_OL_MAX_BITNR; i++) { + /* overlap-check defines a template bitmask, but every flag may be + * overwritten through the associated boolean option */ + s->overlap_check |= + qemu_opt_get_bool(opts, overlap_bool_option_names[i], + overlap_check_template & (1 << i)) << i; + } + s->l2_bits = s->cluster_bits - 3; /* L2 is always one cluster */ s->l2_size = 1 << s->l2_bits; /* 2^(s->refcount_order - 3) is the refcount width in bytes */ @@ -791,14 +839,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, } /* get L2 table/refcount block cache size from command line options */ - opts = qemu_opts_create(&qcow2_runtime_opts, NULL, 0, &error_abort); - qemu_opts_absorb_qdict(opts, options, &local_err); - if (local_err) { - error_propagate(errp, local_err); - ret = -EINVAL; - goto fail; - } - read_cache_sizes(opts, &l2_cache_size, &refcount_cache_size, &local_err); if (local_err) { error_propagate(errp, local_err); @@ -931,46 +971,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, s->discard_passthrough[QCOW2_DISCARD_OTHER] = qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false); - opt_overlap_check = qemu_opt_get(opts, QCOW2_OPT_OVERLAP); - opt_overlap_check_template = qemu_opt_get(opts, QCOW2_OPT_OVERLAP_TEMPLATE); - if (opt_overlap_check_template && opt_overlap_check && - strcmp(opt_overlap_check_template, opt_overlap_check)) - { - error_setg(errp, "Conflicting values for qcow2 options '" - QCOW2_OPT_OVERLAP "' ('%s') and '" QCOW2_OPT_OVERLAP_TEMPLATE - "' ('%s')", opt_overlap_check, opt_overlap_check_template); - ret = -EINVAL; - goto fail; - } - if (!opt_overlap_check) { - opt_overlap_check = opt_overlap_check_template ?: "cached"; - } - - if (!strcmp(opt_overlap_check, "none")) { - overlap_check_template = 0; - } else if (!strcmp(opt_overlap_check, "constant")) { - overlap_check_template = QCOW2_OL_CONSTANT; - } else if (!strcmp(opt_overlap_check, "cached")) { - overlap_check_template = QCOW2_OL_CACHED; - } else if (!strcmp(opt_overlap_check, "all")) { - overlap_check_template = QCOW2_OL_ALL; - } else { - error_setg(errp, "Unsupported value '%s' for qcow2 option " - "'overlap-check'. Allowed are either of the following: " - "none, constant, cached, all", opt_overlap_check); - ret = -EINVAL; - goto fail; - } - - s->overlap_check = 0; - for (i = 0; i < QCOW2_OL_MAX_BITNR; i++) { - /* overlap-check defines a template bitmask, but every flag may be - * overwritten through the associated boolean option */ - s->overlap_check |= - qemu_opt_get_bool(opts, overlap_bool_option_names[i], - overlap_check_template & (1 << i)) << i; - } - qemu_opts_del(opts); opts = NULL; -- 1.9.3