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[Qemu-devel] [PATCH v4 10/15] qemu-io: Put flag changes in the options Q
From: |
Alberto Garcia |
Subject: |
[Qemu-devel] [PATCH v4 10/15] qemu-io: Put flag changes in the options QDict in reopen_f() |
Date: |
Wed, 7 Nov 2018 14:59:45 +0200 |
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 <address@hidden>
---
qemu-io-cmds.c | 27 ++++++++++++++++++++++++++-
tests/qemu-iotests/133 | 9 +++++++++
tests/qemu-iotests/133.out | 8 ++++++++
3 files changed, 43 insertions(+), 1 deletion(-)
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 5363482213..c9ae09d574 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);
diff --git a/tests/qemu-iotests/133 b/tests/qemu-iotests/133
index af6b3e1dd4..14e6b3b972 100755
--- a/tests/qemu-iotests/133
+++ b/tests/qemu-iotests/133
@@ -92,6 +92,15 @@ echo
IMGOPTSSYNTAX=false $QEMU_IO -f null-co -c 'reopen' -c 'info' \
"json:{'driver': 'null-co', 'size': 65536}"
+echo
+echo "=== Check that mixing -c/-r/-w and their corresponding options is
forbidden ==="
+echo
+
+$QEMU_IO -c 'reopen -r -o read-only=on' $TEST_IMG
+$QEMU_IO -c 'reopen -w -o read-only=on' $TEST_IMG
+$QEMU_IO -c 'reopen -c none -o cache.direct=on' $TEST_IMG
+$QEMU_IO -c 'reopen -c writeback -o cache.direct=on' $TEST_IMG
+$QEMU_IO -c 'reopen -c directsync -o cache.no-flush=on' $TEST_IMG
# success, all done
echo "*** done"
rm -f $seq.full
diff --git a/tests/qemu-iotests/133.out b/tests/qemu-iotests/133.out
index f4a85aeb63..48a9d087f0 100644
--- a/tests/qemu-iotests/133.out
+++ b/tests/qemu-iotests/133.out
@@ -24,4 +24,12 @@ Cannot change the option 'driver'
format name: null-co
format name: null-co
+
+=== Check that mixing -c/-r/-w and their corresponding options is forbidden ===
+
+Cannot set both -r/-w and 'read-only'
+Cannot set both -r/-w and 'read-only'
+Cannot set both -c and the cache options
+Cannot set both -c and the cache options
+Cannot set both -c and the cache options
*** done
--
2.11.0
- Re: [Qemu-devel] [PATCH v4 15/15] block: Assert that flags are up-to-date in bdrv_reopen_prepare(), (continued)
- [Qemu-devel] [PATCH v4 01/15] block: Add bdrv_reopen_set_read_only(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 13/15] block: Stop passing flags to bdrv_reopen_queue_child(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 02/15] block: Use bdrv_reopen_set_read_only() in bdrv_backing_update_filename(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 06/15] block: Use bdrv_reopen_set_read_only() in qmp_change_backing_file(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 05/15] block: Use bdrv_reopen_set_read_only() in stream_start/complete(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 12/15] block: Remove flags parameter from bdrv_reopen_queue(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 11/15] block: Clean up reopen_backing_file() in block/replication.c, Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 10/15] qemu-io: Put flag changes in the options QDict in reopen_f(),
Alberto Garcia <=
- [Qemu-devel] [PATCH v4 07/15] block: Use bdrv_reopen_set_read_only() in external_snapshot_commit(), Alberto Garcia, 2018/11/07
- [Qemu-devel] [PATCH v4 14/15] block: Remove assertions from update_flags_from_options(), Alberto Garcia, 2018/11/07