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nbd: pass export name as init argument

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There is no need to keep the export name around, and it seems a better
fit as an argument in the init() call.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2013-12-01 22:23:43 +01:00 committed by Gerd Hoffmann
parent e53a18e488
commit e2bc625f9b
3 changed files with 14 additions and 13 deletions
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9
block/nbd-client.c
View file

@ -338,18 +338,17 @@ static void nbd_teardown_connection(NbdClientSession *client)
void nbd_client_session_close(NbdClientSession *client)
{
nbd_teardown_connection(client);
g_free(client->export_name);
client->export_name = NULL;
}
int nbd_client_session_init(NbdClientSession *client,
BlockDriverState *bs, int sock)
int nbd_client_session_init(NbdClientSession *client, BlockDriverState *bs,
int sock, const char *export)
{
int ret;
/* NBD handshake */
logout("session init %s\n", export);
qemu_set_block(sock);
ret = nbd_receive_negotiate(sock, client->export_name,
ret = nbd_receive_negotiate(sock, export,
&client->nbdflags, &client->size,
&client->blocksize);
if (ret < 0) {

5
block/nbd-client.h
View file

@ -30,14 +30,13 @@ typedef struct NbdClientSession {
Coroutine *recv_coroutine[MAX_NBD_REQUESTS];
struct nbd_reply reply;
char *export_name; /* An NBD server may export several devices */
bool is_unix;
BlockDriverState *bs;
} NbdClientSession;
int nbd_client_session_init(NbdClientSession *client,
BlockDriverState *bs, int sock);
int nbd_client_session_init(NbdClientSession *client, BlockDriverState *bs,
int sock, const char *export_name);
void nbd_client_session_close(NbdClientSession *client);
int nbd_client_session_co_discard(NbdClientSession *client, int64_t sector_num,

13
block/nbd.c
View file

@ -188,7 +188,7 @@ out:
g_free(file);
}
static int nbd_config(BDRVNBDState *s, QDict *options)
static int nbd_config(BDRVNBDState *s, QDict *options, char **export)
{
Error *local_err = NULL;
@ -218,8 +218,8 @@ static int nbd_config(BDRVNBDState *s, QDict *options)
qemu_opt_set_number(s->socket_opts, "port", NBD_DEFAULT_PORT);
}
s->client.export_name = g_strdup(qdict_get_try_str(options, "export"));
if (s->client.export_name) {
*export = g_strdup(qdict_get_try_str(options, "export"));
if (*export) {
qdict_del(options, "export");
}
@ -253,10 +253,11 @@ static int nbd_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
BDRVNBDState *s = bs->opaque;
char *export = NULL;
int result, sock;
/* Pop the config into our state object. Exit if invalid. */
result = nbd_config(s, options);
result = nbd_config(s, options, &export);
if (result != 0) {
return result;
}
@ -270,7 +271,9 @@ static int nbd_open(BlockDriverState *bs, QDict *options, int flags,
}
/* NBD handshake */
return nbd_client_session_init(&s->client, bs, sock);
result = nbd_client_session_init(&s->client, bs, sock, export);
g_free(export);
return result;
}
static int nbd_co_readv(BlockDriverState *bs, int64_t sector_num,