[Qemu-devel] [PATCH 16/20] sheepdog: Use bdrv_open options instead of filename

[Kevin Wolf]

This is only to convert the internal interface that is used for passing
the "filename" to be parsed, but converting to actual fine grained
options is left for another day, as it doesn't look trivial.

Signed-off-by: Kevin Wolf <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
 block/sheepdog.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/block/sheepdog.c b/block/sheepdog.c
index 1c5b532..e224c51 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -1126,7 +1126,21 @@ static int write_object(int fd, char *buf, uint64_t oid, 
int copies,
                              create, cache_flags);
 }
 
-static int sd_open(BlockDriverState *bs, const char *filename,
+/* TODO Convert to fine grained options */
+static QemuOptsList runtime_opts = {
+    .name = "sheepdog",
+    .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
+    .desc = {
+        {
+            .name = "filename",
+            .type = QEMU_OPT_STRING,
+            .help = "URL to the sheepdog image",
+        },
+        { /* end of list */ }
+    },
+};
+
+static int sd_open(BlockDriverState *bs, const char *dummy,
                    QDict *options, int flags)
 {
     int ret, fd;
@@ -1135,6 +1149,20 @@ static int sd_open(BlockDriverState *bs, const char 
*filename,
     char vdi[SD_MAX_VDI_LEN], tag[SD_MAX_VDI_TAG_LEN];
     uint32_t snapid;
     char *buf = NULL;
+    QemuOpts *opts;
+    Error *local_err = NULL;
+    const char *filename;
+
+    opts = qemu_opts_create_nofail(&runtime_opts);
+    qemu_opts_absorb_qdict(opts, options, &local_err);
+    if (error_is_set(&local_err)) {
+        qerror_report_err(local_err);
+        error_free(local_err);
+        ret = -EINVAL;
+        goto out;
+    }
+
+    filename = qemu_opt_get(opts, "filename");
 
     QLIST_INIT(&s->inflight_aio_head);
     QLIST_INIT(&s->pending_aio_head);
@@ -1199,6 +1227,7 @@ static int sd_open(BlockDriverState *bs, const char 
*filename,
     bs->total_sectors = s->inode.vdi_size / SECTOR_SIZE;
     pstrcpy(s->name, sizeof(s->name), vdi);
     qemu_co_mutex_init(&s->lock);
+    qemu_opts_del(opts);
     g_free(buf);
     return 0;
 out:
@@ -1206,6 +1235,7 @@ out:
     if (s->fd >= 0) {
         closesocket(s->fd);
     }
+    qemu_opts_del(opts);
     g_free(buf);
     return ret;
 }
-- 
1.8.1.4