bytemark/flexnbd-c
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flexnbd-c/src/flexnbd.h

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Add mboxes
2012-06-27 15:45:33 +01:00
#ifndef FLEXNBD_H
#define FLEXNBD_H
#include "acl.h"
#include "mirror.h"
#include "serve.h"
#include "self_pipe.h"
#include "mbox.h"
#include "control.h"
Free all possibly held mutexes in error handlers Now that we have 3 mutexes lying around, it's important that we check and free these if necessary if error() is called in any thread that can hold them. To do this, we now have flexthread.c, which defines a flexthread_mutex struct. This is a wrapper around a pthread_mutex_t and a pthread_t. The idea is that in the error handler, the thread can check whether it holds the mutex and can free it if and only if it does. This is important because pthread fast mutexes can be freed by *any* thread, not just the thread which holds them. Note: it is only ever safe for a thread to check if it holds the mutex itself. It is *never* safe to check if another thread holds a mutex without first locking that mutex, which makes the whole operation rather pointless.
2012-07-11 09:43:16 +01:00
#include "flexthread.h"
Add mboxes
2012-06-27 15:45:33 +01:00
/* Carries the "globals". */
struct flexnbd {
/* We always have a serve pointer, but it should never be
* dereferenced outside a flexnbd_switch_lock/unlock pair.
*/
struct server * serve;
Remove listen mode Changing behaviour so that instead of rebinding after a successful migration and continuing as an ordinary server, we simply quit with a 0 exit code and let our caller restart us as a server if they want to. This means that everything in listen.c, listen.h, and anything making reference to a rebind address is unneeded.
2012-07-23 09:48:50 +01:00
Add mboxes
2012-06-27 15:45:33 +01:00
/* We only have a control object if a control socket name was
* passed on the command line.
*/
struct control * control;
/* File descriptor for a signalfd(2) signal stream. */
int signal_fd;
};
Remove listen mode Changing behaviour so that instead of rebinding after a successful migration and continuing as an ordinary server, we simply quit with a 0 exit code and let our caller restart us as a server if they want to. This means that everything in listen.c, listen.h, and anything making reference to a rebind address is unneeded.
2012-07-23 09:48:50 +01:00
Add mboxes
2012-06-27 15:45:33 +01:00
struct flexnbd * flexnbd_create(void);
struct flexnbd * flexnbd_create_serving(
char* s_ip_address,
char* s_port,
char* s_file,
char *s_ctrl_sock,
int default_deny,
int acl_entries,
char** s_acl_entries,
int max_nbd_clients);
struct flexnbd * flexnbd_create_listening(
Remove listen mode Changing behaviour so that instead of rebinding after a successful migration and continuing as an ordinary server, we simply quit with a 0 exit code and let our caller restart us as a server if they want to. This means that everything in listen.c, listen.h, and anything making reference to a rebind address is unneeded.
2012-07-23 09:48:50 +01:00
char* s_ip_address,
char* s_port,
char* s_file,
char *s_ctrl_sock,
int default_deny,
int acl_entries,
char** s_acl_entries );
Add mboxes
2012-06-27 15:45:33 +01:00
void flexnbd_destroy( struct flexnbd * );
enum mirror_state;
enum mirror_state flexnbd_get_mirror_state( struct flexnbd * );
int flexnbd_default_deny( struct flexnbd * );
void flexnbd_set_server( struct flexnbd * flexnbd, struct server * serve );
int flexnbd_signal_fd( struct flexnbd * flexnbd );
int flexnbd_serve( 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
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