libvirt/qemud/qemud.h

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/*
* qemud.h: daemon data structure definitions
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*
* Copyright (C) 2006-2009 Red Hat, Inc.
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* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef QEMUD_INTERNAL_H__
#define QEMUD_INTERNAL_H__
#include <config.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include "gnutls_1_0_compat.h"
#if HAVE_SASL
#include <sasl/sasl.h>
#endif
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#ifdef HAVE_POLKIT
#include <dbus/dbus.h>
#endif
#ifdef HAVE_SYS_SYSLIMITS_H
#include <sys/syslimits.h>
#endif
#include <rpc/types.h>
#include <rpc/xdr.h>
#include "remote_protocol.h"
#include "logging.h"
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#include "threads.h"
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#ifdef __GNUC__
#ifdef HAVE_ANSIDECL_H
#include <ansidecl.h>
#endif
#ifndef ATTRIBUTE_UNUSED
#define ATTRIBUTE_UNUSED __attribute__((__unused__))
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#endif
#ifndef ATTRIBUTE_FORMAT
#define ATTRIBUTE_FORMAT(args...) __attribute__((__format__ (args)))
#endif
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#else
#define ATTRIBUTE_UNUSED
#define ATTRIBUTE_FORMAT(...)
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#endif
#define qemudDebug DEBUG
/* Whether we're passing reads & writes through a sasl SSF */
enum qemud_sasl_ssf {
QEMUD_SASL_SSF_NONE = 0,
QEMUD_SASL_SSF_READ = 1,
QEMUD_SASL_SSF_WRITE = 2,
};
enum qemud_sock_type {
QEMUD_SOCK_TYPE_UNIX = 0,
QEMUD_SOCK_TYPE_TCP = 1,
QEMUD_SOCK_TYPE_TLS = 2,
};
struct qemud_client_message {
char buffer [REMOTE_MESSAGE_MAX + REMOTE_MESSAGE_HEADER_XDR_LEN];
unsigned int bufferLength;
unsigned int bufferOffset;
int async : 1;
struct qemud_client_message *next;
};
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/* Stores the per-client connection state */
struct qemud_client {
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virMutex lock;
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int magic;
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int fd;
int watch;
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int readonly:1;
int closing:1;
struct sockaddr_storage addr;
socklen_t addrlen;
int type; /* qemud_sock_type */
gnutls_session_t tlssession;
int auth;
int handshake : 1; /* If we're in progress for TLS handshake */
#if HAVE_SASL
sasl_conn_t *saslconn;
int saslSSF;
const char *saslDecoded;
unsigned int saslDecodedLength;
unsigned int saslDecodedOffset;
const char *saslEncoded;
unsigned int saslEncodedLength;
unsigned int saslEncodedOffset;
char *saslUsername;
#endif
/* Count of meages in 'dx' or 'tx' queue
* ie RPC calls in progress. Does not count
* async events which are not used for
* throttling calculations */
int nrequests;
/* Zero or one messages being received. Zero if
* nrequests >= max_clients and throttling */
struct qemud_client_message *rx;
/* Zero or many messages waiting for a worker
* to process them */
struct qemud_client_message *dx;
/* Zero or many messages waiting for transmit
* back to client, including async events */
struct qemud_client_message *tx;
/* This is only valid if a remote open call has been made on this
* connection, otherwise it will be NULL. Also if remote close is
* called, it will be set back to NULL if that succeeds.
*/
virConnectPtr conn;
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int refs;
/* back-pointer to our server */
struct qemud_server *server;
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};
#define QEMUD_CLIENT_MAGIC 0x7788aaee
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struct qemud_socket {
int fd;
int watch;
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int readonly;
int type; /* qemud_sock_type */
int auth;
int port;
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struct qemud_socket *next;
};
struct qemud_worker {
pthread_t thread;
int hasThread :1;
int processingCall :1;
int quitRequest : 1;
/* back-pointer to our server */
struct qemud_server *server;
};
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/* Main server state */
struct qemud_server {
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virMutex lock;
virCond job;
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int privileged;
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int nworkers;
int nactiveworkers;
struct qemud_worker *workers;
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int nsockets;
struct qemud_socket *sockets;
int nclients;
struct qemud_client **clients;
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int sigread;
char *logDir;
unsigned int shutdown : 1;
#ifdef HAVE_AVAHI
struct libvirtd_mdns *mdns;
#endif
#if HAVE_SASL
char **saslUsernameWhitelist;
#endif
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#if HAVE_POLKIT
DBusConnection *sysbus;
#endif
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};
void qemudLog(int priority, const char *fmt, ...)
ATTRIBUTE_FORMAT(printf,2,3);
int
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remoteDispatchClientRequest (struct qemud_server *server,
struct qemud_client *client,
struct qemud_client_message *req);
int qemudRegisterClientEvent(struct qemud_server *server,
struct qemud_client *client,
int update);
void qemudDispatchClientFailure(struct qemud_client *client);
void
qemudClientMessageQueuePush(struct qemud_client_message **queue,
struct qemud_client_message *msg);
int remoteRelayDomainEvent (virConnectPtr conn ATTRIBUTE_UNUSED,
virDomainPtr dom,
int event,
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int detail,
void *opaque);
#if HAVE_POLKIT
int qemudGetSocketIdentity(int fd, uid_t *uid, pid_t *pid);
#endif
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#endif