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Add the REQUEST_ENTRUST nbd request type

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This commit is contained in:
Alex Young
2012-06-21 17:12:06 +01:00
parent a3dc670939
commit e21beb1866
6 changed files with 289 additions and 13 deletions
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27
src/readwrite.c
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@@ -109,6 +109,33 @@ void socket_nbd_write(int fd, off64_t from, int len, int in_fd, void* in_buf)
read_reply(fd, &request, &reply);
}
void socket_nbd_entrust( int fd )
{
struct nbd_request request;
struct nbd_reply reply;
fill_request( &request, REQUEST_ENTRUST, 0, 0 );
FATAL_IF_NEGATIVE( writeloop( fd, &request, sizeof( request ) ),
"Couldn't write request");
read_reply( fd, &request, &reply );
}
int socket_nbd_disconnect( int fd )
{
int success = 1;
struct nbd_request request;
fill_request( &request, REQUEST_DISCONNECT, 0, 0 );
/* FIXME: This shouldn't be a FATAL error. We should just drop
* the mirror without affecting the main server.
*/
FATAL_IF_NEGATIVE( writeloop( fd, &request, sizeof( request ) ),
"Failed to write the disconnect request." );
return success;
}
#define CHECK_RANGE(error_type) { \
off64_t size = socket_nbd_read_hello(params->client); \
if (params->from < 0 || (params->from + params->len) > size) {\