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authorKevin Wolf <kwolf@redhat.com>2015-04-07 17:12:56 +0200
committerKevin Wolf <kwolf@redhat.com>2015-06-12 16:59:06 +0200
commit18edf289a8951f3a48caff3b5fe17f2d414c2924 (patch)
tree5bad88684a4c265416a80d0c1b715f1012c6e7e7 /block.c
parent54861b9280e95dd16c062b26a9d0adfe3608c63c (diff)
downloadqemu-arm-18edf289a8951f3a48caff3b5fe17f2d414c2924.tar.gz
block: Use QemuOpts in bdrv_open_common()
Instead of manually parsing options and then deleting them from the options QDict, just use QemuOpts like most other places that deal with block device options. More options will be added there and then QemuOpts is a lot more manageable than open-coding everything. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r--block.c38
1 files changed, 33 insertions, 5 deletions
diff --git a/block.c b/block.c
index b2e784e3ff..ad8b0c756f 100644
--- a/block.c
+++ b/block.c
@@ -767,6 +767,19 @@ static void bdrv_assign_node_name(BlockDriverState *bs,
QTAILQ_INSERT_TAIL(&graph_bdrv_states, bs, node_list);
}
+static QemuOptsList bdrv_runtime_opts = {
+ .name = "bdrv_common",
+ .head = QTAILQ_HEAD_INITIALIZER(bdrv_runtime_opts.head),
+ .desc = {
+ {
+ .name = "node-name",
+ .type = QEMU_OPT_STRING,
+ .help = "Node name of the block device node",
+ },
+ { /* end of list */ }
+ },
+};
+
/*
* Common part for opening disk images and files
*
@@ -778,6 +791,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
int ret, open_flags;
const char *filename;
const char *node_name = NULL;
+ QemuOpts *opts;
Error *local_err = NULL;
assert(drv != NULL);
@@ -798,13 +812,21 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
trace_bdrv_open_common(bs, filename ?: "", flags, drv->format_name);
- node_name = qdict_get_try_str(options, "node-name");
+ opts = qemu_opts_create(&bdrv_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_opts;
+ }
+
+ node_name = qemu_opt_get(opts, "node-name");
bdrv_assign_node_name(bs, node_name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
- return -EINVAL;
+ ret = -EINVAL;
+ goto fail_opts;
}
- qdict_del(options, "node-name");
bs->open_flags = flags;
bs->guest_block_size = 512;
@@ -819,7 +841,8 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
? "Driver '%s' can only be used for read-only devices"
: "Driver '%s' is not whitelisted",
drv->format_name);
- return -ENOTSUP;
+ ret = -ENOTSUP;
+ goto fail_opts;
}
assert(bs->copy_on_read == 0); /* bdrv_new() and bdrv_close() make it so */
@@ -828,7 +851,8 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
bdrv_enable_copy_on_read(bs);
} else {
error_setg(errp, "Can't use copy-on-read on read-only device");
- return -EINVAL;
+ ret = -EINVAL;
+ goto fail_opts;
}
}
@@ -894,6 +918,8 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
assert(bdrv_opt_mem_align(bs) != 0);
assert(bdrv_min_mem_align(bs) != 0);
assert((bs->request_alignment != 0) || bs->sg);
+
+ qemu_opts_del(opts);
return 0;
free_and_fail:
@@ -901,6 +927,8 @@ free_and_fail:
g_free(bs->opaque);
bs->opaque = NULL;
bs->drv = NULL;
+fail_opts:
+ qemu_opts_del(opts);
return ret;
}