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-rw-r--r--block/file-win32.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/block/file-win32.c b/block/file-win32.c
index ab69bd811a..e2900c3a51 100644
--- a/block/file-win32.c
+++ b/block/file-win32.c
@@ -299,6 +299,11 @@ static QemuOptsList raw_runtime_opts = {
.type = QEMU_OPT_STRING,
.help = "host AIO implementation (threads, native)",
},
+ {
+ .name = "locking",
+ .type = QEMU_OPT_STRING,
+ .help = "file locking mode (on/off/auto, default: auto)",
+ },
{ /* end of list */ }
},
};
@@ -333,6 +338,7 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags,
Error *local_err = NULL;
const char *filename;
bool use_aio;
+ OnOffAuto locking;
int ret;
s->type = FTYPE_FILE;
@@ -343,10 +349,24 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- if (qdict_get_try_bool(options, "locking", false)) {
+ locking = qapi_enum_parse(&OnOffAuto_lookup,
+ qemu_opt_get(opts, "locking"),
+ ON_OFF_AUTO_AUTO, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
+ switch (locking) {
+ case ON_OFF_AUTO_ON:
error_setg(errp, "locking=on is not supported on Windows");
ret = -EINVAL;
goto fail;
+ case ON_OFF_AUTO_OFF:
+ case ON_OFF_AUTO_AUTO:
+ break;
+ default:
+ g_assert_not_reached();
}
filename = qemu_opt_get(opts, "filename");