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flexnbd: Add a proxy mode

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This lets us proxy connections between NBD clients and servers, resiliently.
This commit is contained in:
nick
2013-02-15 16:52:16 +00:00
parent 9b67d30608
commit 98d8fbeaf0
12 changed files with 1101 additions and 24 deletions
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18
src/flexnbd.h
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@@ -4,6 +4,7 @@
#include "acl.h"
#include "mirror.h"
#include "serve.h"
#include "proxy.h"
#include "self_pipe.h"
#include "mbox.h"
#include "control.h"
@@ -11,11 +12,14 @@
/* Carries the "globals". */
struct flexnbd {
/* We always have a serve pointer, but it should never be
* dereferenced outside a flexnbd_switch_lock/unlock pair.
/* Our serve pointer should never be dereferenced outside a
* flexnbd_switch_lock/unlock pair.
*/
struct server * serve;
/* In proxy mode, this is filled instead of serve, above */
struct proxier * proxy;
/* We only have a control object if a control socket name was
* passed on the command line.
*/
@@ -46,6 +50,14 @@ struct flexnbd * flexnbd_create_listening(
int acl_entries,
char** s_acl_entries );
struct flexnbd * flexnbd_create_proxying(
char* s_downstream_address,
char* s_downstream_port,
char* s_upstream_address,
char* s_upstream_port,
char* s_upstream_bind
);
void flexnbd_destroy( struct flexnbd * );
enum mirror_state;
enum mirror_state flexnbd_get_mirror_state( struct flexnbd * );
@@ -55,7 +67,9 @@ int flexnbd_signal_fd( struct flexnbd * flexnbd );
int flexnbd_serve( struct flexnbd * flexnbd );
int flexnbd_proxy( struct flexnbd * flexnbd );
struct server * flexnbd_server( struct flexnbd * flexnbd );
void flexnbd_replace_acl( struct flexnbd * flexnbd, struct acl * acl );
struct status * flexnbd_status_create( struct flexnbd * flexnbd );
#endif