From dc900c35239bc865df2dff5880eabcd25b974f19 Mon Sep 17 00:00:00 2001 From: Alberto Garcia Date: Mon, 12 Nov 2018 16:00:42 +0200 Subject: qemu-io: Put flag changes in the options QDict in reopen_f() When reopen_f() puts a block device in the reopen queue, some of the new options are passed using a QDict, but others ("read-only" and the cache options) are passed as flags. This patch puts those flags in the QDict. This way the flags parameter becomes redundant and we'll be able to get rid of it in a subsequent patch. Signed-off-by: Alberto Garcia Reviewed-by: Max Reitz Signed-off-by: Kevin Wolf --- qemu-io-cmds.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) (limited to 'qemu-io-cmds.c') diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 5363482..c9ae09d 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -10,6 +10,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" +#include "qapi/qmp/qdict.h" #include "qemu-io.h" #include "sysemu/block-backend.h" #include "block/block.h" @@ -1978,6 +1979,7 @@ static int reopen_f(BlockBackend *blk, int argc, char **argv) int flags = bs->open_flags; bool writethrough = !blk_enable_write_cache(blk); bool has_rw_option = false; + bool has_cache_option = false; BlockReopenQueue *brq; Error *local_err = NULL; @@ -1989,6 +1991,7 @@ static int reopen_f(BlockBackend *blk, int argc, char **argv) error_report("Invalid cache option: %s", optarg); return -EINVAL; } + has_cache_option = true; break; case 'o': if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { @@ -2046,9 +2049,31 @@ static int reopen_f(BlockBackend *blk, int argc, char **argv) } qopts = qemu_opts_find(&reopen_opts, NULL); - opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; + opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); qemu_opts_reset(&reopen_opts); + if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { + if (has_rw_option) { + error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); + qobject_unref(opts); + return -EINVAL; + } + } else { + qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); + } + + if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || + qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { + if (has_cache_option) { + error_report("Cannot set both -c and the cache options"); + qobject_unref(opts); + return -EINVAL; + } + } else { + qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); + qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); + } + bdrv_subtree_drained_begin(bs); brq = bdrv_reopen_queue(NULL, bs, opts, flags); bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err); -- cgit v1.1