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Add support for admin API in libvirt daemon

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For this to pe properly separated from other protocols used by the
server, there is second server added which allows access to the whole
virNetDaemon to its clients.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Martin Kletzander 2015-04-15 16:23:55 +02:00
parent beb0eda2e3
commit d5f4241bbc
7 changed files with 294 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
cfg.mk
View File

@ -1072,6 +1072,7 @@ sc_po_check: \
$(srcdir)/daemon/remote_dispatch.h \
$(srcdir)/daemon/qemu_dispatch.h \
$(srcdir)/src/remote/remote_client_bodies.h \
$(srcdir)/daemon/admin_dispatch.h \
$(srcdir)/src/admin/admin_client.h
$(srcdir)/daemon/remote_dispatch.h: $(srcdir)/src/remote/remote_protocol.x
$(MAKE) -C daemon remote_dispatch.h
@ -1079,6 +1080,8 @@ $(srcdir)/daemon/qemu_dispatch.h: $(srcdir)/src/remote/qemu_protocol.x
$(MAKE) -C daemon qemu_dispatch.h
$(srcdir)/src/remote/remote_client_bodies.h: $(srcdir)/src/remote/remote_protocol.x
$(MAKE) -C src remote/remote_client_bodies.h
$(srcdir)/daemon/admin_dispatch.h: $(srcdir)/src/admin/admin_protocol.x
$(MAKE) -C daemon admin_dispatch.h
$(srcdir)/src/admin/admin_client.h: $(srcdir)/src/admin/admin_protocol.x
$(MAKE) -C src admin/admin_client.h

32
daemon/Makefile.am
View File

@ -1,6 +1,6 @@
## Process this file with automake to produce Makefile.in
## Copyright (C) 2005-2014 Red Hat, Inc.
## Copyright (C) 2005-2015 Red Hat, Inc.
##
## This library is free software; you can redistribute it and/or
## modify it under the terms of the GNU Lesser General Public
@ -25,6 +25,7 @@ INCLUDES = \
-I$(top_srcdir)/src/conf \
-I$(top_srcdir)/src/rpc \
-I$(top_srcdir)/src/remote \
-I$(top_srcdir)/src/admin \
-I$(top_srcdir)/src/access \
$(GETTEXT_CPPFLAGS)
@ -34,6 +35,7 @@ DAEMON_GENERATED = \
remote_dispatch.h \
lxc_dispatch.h \
qemu_dispatch.h \
admin_dispatch.h \
$(NULL)
DAEMON_SOURCES = \
@ -49,6 +51,7 @@ EXTRA_DIST = \
remote_dispatch.h \
lxc_dispatch.h \
qemu_dispatch.h \
admin_dispatch.h \
libvirtd.conf \
libvirtd.init.in \
libvirtd.upstart \
@ -78,6 +81,7 @@ BUILT_SOURCES =
REMOTE_PROTOCOL = $(top_srcdir)/src/remote/remote_protocol.x
LXC_PROTOCOL = $(top_srcdir)/src/remote/lxc_protocol.x
QEMU_PROTOCOL = $(top_srcdir)/src/remote/qemu_protocol.x
ADMIN_PROTOCOL = $(top_srcdir)/src/admin/admin_protocol.x
remote_dispatch.h: $(top_srcdir)/src/rpc/gendispatch.pl \
$(REMOTE_PROTOCOL)
@ -97,6 +101,12 @@ qemu_dispatch.h: $(top_srcdir)/src/rpc/gendispatch.pl \
--mode=server qemu QEMU $(QEMU_PROTOCOL) \
> $(srcdir)/qemu_dispatch.h
admin_dispatch.h: $(srcdir)/../src/rpc/gendispatch.pl \
$(ADMIN_PROTOCOL)
$(AM_V_GEN)$(PERL) -w $(srcdir)/../src/rpc/gendispatch.pl \
--mode=server admin ADMIN $(ADMIN_PROTOCOL) \
> $(srcdir)/admin_dispatch.h
if WITH_LIBVIRTD
# Build a convenience library, for reuse in tests/libvirtdconftest
@ -116,6 +126,25 @@ libvirtd_conf_la_LDFLAGS = \
$(NULL)
libvirtd_conf_la_LIBADD = $(LIBXML_LIBS)
noinst_LTLIBRARIES += libvirtd_admin.la
libvirtd_admin_la_SOURCES = \
admin_server.c \
../src/admin/admin_protocol.c
libvirtd_admin_la_CFLAGS = \
$(AM_CFLAGS) \
$(XDR_CFLAGS) \
$(PIE_CFLAGS) \
$(WARN_CFLAGS) \
$(LIBXML_CFLAGS) \
$(COVERAGE_CFLAGS)
libvirtd_admin_la_LDFLAGS = \
$(PIE_LDFLAGS) \
$(RELRO_LDFLAGS) \
$(COVERAGE_LDFLAGS) \
$(NO_INDIRECT_LDFLAGS)
man8_MANS = libvirtd.8
sbin_PROGRAMS = libvirtd
@ -168,6 +197,7 @@ endif WITH_DTRACE_PROBES
libvirtd_LDADD += \
libvirtd_conf.la \
libvirtd_admin.la \
../src/libvirt-lxc.la \
../src/libvirt-qemu.la \
../src/libvirt_driver_remote.la \

117
daemon/admin_server.c Normal file
View File

@ -0,0 +1,117 @@
/*
* admin_server.c:
*
* Copyright (C) 2014-2015 Red Hat, Inc.
*
* 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, see
* <http://www.gnu.org/licenses/>.
*
* Author: Martin Kletzander <mkletzan@redhat.com>
*/
#include <config.h>
#include "internal.h"
#include "libvirtd.h"
#include "libvirt_internal.h"
#include "admin_protocol.h"
#include "admin_server.h"
#include "datatypes.h"
#include "viralloc.h"
#include "virerror.h"
#include "virlog.h"
#include "virnetdaemon.h"
#include "virnetserver.h"
#include "virstring.h"
#include "virthreadjob.h"
#define VIR_FROM_THIS VIR_FROM_ADMIN
VIR_LOG_INIT("daemon.admin");
void
remoteAdmClientFreeFunc(void *data)
{
struct daemonAdmClientPrivate *priv = data;
virMutexDestroy(&priv->lock);
virObjectUnref(priv->dmn);
VIR_FREE(priv);
}
void *
remoteAdmClientInitHook(virNetServerClientPtr client ATTRIBUTE_UNUSED,
void *opaque)
{
struct daemonAdmClientPrivate *priv;
if (VIR_ALLOC(priv) < 0)
return NULL;
if (virMutexInit(&priv->lock) < 0) {
VIR_FREE(priv);
virReportSystemError(errno, "%s", _("unable to init mutex"));
return NULL;
}
/*
* We don't necessarily need to ref this object right now as there
* must be one ref being held throughout the life of the daemon,
* but let's just be safe for future.
*/
priv->dmn = virObjectRef(opaque);
return priv;
}
/* Functions */
static int
adminDispatchConnectOpen(virNetServerPtr server ATTRIBUTE_UNUSED,
virNetServerClientPtr client,
virNetMessagePtr msg ATTRIBUTE_UNUSED,
virNetMessageErrorPtr rerr,
struct admin_connect_open_args *args)
{
unsigned int flags;
struct daemonAdmClientPrivate *priv =
virNetServerClientGetPrivateData(client);
int ret = -1;
VIR_DEBUG("priv=%p dmn=%p", priv, priv->dmn);
virMutexLock(&priv->lock);
flags = args->flags;
virCheckFlagsGoto(0, cleanup);
ret = 0;
cleanup:
if (ret < 0)
virNetMessageSaveError(rerr);
virMutexUnlock(&priv->lock);
return ret;
}
static int
adminDispatchConnectClose(virNetServerPtr server ATTRIBUTE_UNUSED,
virNetServerClientPtr client,
virNetMessagePtr msg ATTRIBUTE_UNUSED,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED)
{
virNetServerClientDelayedClose(client);
return 0;
}
#include "admin_dispatch.h"

36
daemon/admin_server.h Normal file
View File

@ -0,0 +1,36 @@
/*
* admin_server.h
*
* Copyright (C) 2014 Red Hat, Inc.
*
* 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, see
* <http://www.gnu.org/licenses/>.
*
* Author: Martin Kletzander <mkletzan@redhat.com>
*/
#ifndef __LIBVIRTD_ADMIN_H__
# define __LIBVIRTD_ADMIN_H__
# include "rpc/virnetserverprogram.h"
# include "rpc/virnetserverclient.h"
extern virNetServerProgramProc adminProcs[];
extern size_t adminNProcs;
void remoteAdmClientFreeFunc(void *data);
void *remoteAdmClientInitHook(virNetServerClientPtr client, void *opaque);
#endif /* __ADMIN_REMOTE_H__ */

104
daemon/libvirtd.c
View File

@ -44,6 +44,7 @@
#include "libvirtd.h"
#include "libvirtd-config.h"
#include "admin_server.h"
#include "viruuid.h"
#include "remote_driver.h"
#include "viralloc.h"
@ -112,6 +113,7 @@ VIR_LOG_INIT("daemon.libvirtd");
virNetSASLContextPtr saslCtxt = NULL;
#endif
virNetServerProgramPtr remoteProgram = NULL;
virNetServerProgramPtr adminProgram = NULL;
virNetServerProgramPtr qemuProgram = NULL;
virNetServerProgramPtr lxcProgram = NULL;
@ -253,18 +255,24 @@ static int
daemonUnixSocketPaths(struct daemonConfig *config,
bool privileged,
char **sockfile,
char **rosockfile)
char **rosockfile,
char **admsockfile)
{
if (config->unix_sock_dir) {
if (virAsprintf(sockfile, "%s/libvirt-sock", config->unix_sock_dir) < 0)
goto error;
if (privileged &&
virAsprintf(rosockfile, "%s/libvirt-sock-ro", config->unix_sock_dir) < 0)
goto error;
if (privileged) {
if (virAsprintf(rosockfile, "%s/libvirt-sock-ro", config->unix_sock_dir) < 0)
goto error;
if (virAsprintf(admsockfile, "%s/libvirt-admin-sock", config->unix_sock_dir) < 0)
goto error;
}
} else {
if (privileged) {
if (VIR_STRDUP(*sockfile, LOCALSTATEDIR "/run/libvirt/libvirt-sock") < 0 ||
VIR_STRDUP(*rosockfile, LOCALSTATEDIR "/run/libvirt/libvirt-sock-ro") < 0)
VIR_STRDUP(*rosockfile, LOCALSTATEDIR "/run/libvirt/libvirt-sock-ro") < 0 ||
VIR_STRDUP(*admsockfile, LOCALSTATEDIR "/run/libvirt/libvirt-admin-sock") < 0)
goto error;
} else {
char *rundir = NULL;
@ -280,7 +288,8 @@ daemonUnixSocketPaths(struct daemonConfig *config,
}
umask(old_umask);
if (virAsprintf(sockfile, "%s/libvirt-sock", rundir) < 0) {
if (virAsprintf(sockfile, "%s/libvirt-sock", rundir) < 0 ||
virAsprintf(admsockfile, "%s/libvirt-admin-sock", rundir) < 0) {
VIR_FREE(rundir);
goto error;
}
@ -427,13 +436,16 @@ static void daemonInitialize(void)
static int ATTRIBUTE_NONNULL(3)
daemonSetupNetworking(virNetServerPtr srv,
virNetServerPtr srvAdm,
struct daemonConfig *config,
const char *sock_path,
const char *sock_path_ro,
const char *sock_path_adm,
bool ipsock,
bool privileged)
{
virNetServerServicePtr svc = NULL;
virNetServerServicePtr svcAdm = NULL;
virNetServerServicePtr svcRO = NULL;
virNetServerServicePtr svcTCP = NULL;
#if WITH_GNUTLS
@ -442,6 +454,7 @@ daemonSetupNetworking(virNetServerPtr srv,
gid_t unix_sock_gid = 0;
int unix_sock_ro_mask = 0;
int unix_sock_rw_mask = 0;
int unix_sock_adm_mask = 0;
unsigned int cur_fd = STDERR_FILENO + 1;
unsigned int nfds = virGetListenFDs();
@ -461,6 +474,11 @@ daemonSetupNetworking(virNetServerPtr srv,
goto error;
}
if (virStrToLong_i(config->unix_sock_admin_perms, NULL, 8, &unix_sock_adm_mask) != 0) {
VIR_ERROR(_("Failed to parse mode '%s'"), config->unix_sock_admin_perms);
goto error;
}
if (virStrToLong_i(config->unix_sock_rw_perms, NULL, 8, &unix_sock_rw_mask) != 0) {
VIR_ERROR(_("Failed to parse mode '%s'"), config->unix_sock_rw_perms);
goto error;
@ -503,6 +521,24 @@ daemonSetupNetworking(virNetServerPtr srv,
virNetServerAddService(srv, svcRO, NULL) < 0)
goto error;
if (sock_path_adm) {
VIR_DEBUG("Registering unix socket %s", sock_path_adm);
if (!(svcAdm = virNetServerServiceNewUNIX(sock_path_adm,
unix_sock_adm_mask,
unix_sock_gid,
REMOTE_AUTH_NONE,
#if WITH_GNUTLS
NULL,
#endif
true,
config->admin_max_queued_clients,
config->admin_max_client_requests)))
goto error;
}
if (virNetServerAddService(srvAdm, svcAdm, NULL) < 0)
goto error;
if (ipsock) {
if (config->listen_tcp) {
VIR_DEBUG("Registering TCP socket %s:%s",
@ -602,6 +638,7 @@ daemonSetupNetworking(virNetServerPtr srv,
virObjectUnref(svcTCP);
virObjectUnref(svc);
virObjectUnref(svcRO);
virObjectUnref(svcAdm);
return -1;
}
@ -1102,6 +1139,7 @@ daemonUsage(const char *argv0, bool privileged)
int main(int argc, char **argv) {
virNetDaemonPtr dmn = NULL;
virNetServerPtr srv = NULL;
virNetServerPtr srvAdm = NULL;
char *remote_config_file = NULL;
int statuswrite = -1;
int ret = 1;
@ -1109,6 +1147,7 @@ int main(int argc, char **argv) {
char *pid_file = NULL;
char *sock_file = NULL;
char *sock_file_ro = NULL;
char *sock_file_adm = NULL;
int timeout = -1; /* -t: Shutdown timeout */
int verbose = 0;
int godaemon = 0;
@ -1276,12 +1315,15 @@ int main(int argc, char **argv) {
if (daemonUnixSocketPaths(config,
privileged,
&sock_file,
&sock_file_ro) < 0) {
&sock_file_ro,
&sock_file_adm) < 0) {
VIR_ERROR(_("Can't determine socket paths"));
exit(EXIT_FAILURE);
}
VIR_DEBUG("Decided on socket paths '%s' and '%s'",
sock_file, NULLSTR(sock_file_ro));
VIR_DEBUG("Decided on socket paths '%s', '%s' and '%s'",
sock_file,
NULLSTR(sock_file_ro),
NULLSTR(sock_file_adm));
if (godaemon) {
char ebuf[1024];
@ -1413,6 +1455,40 @@ int main(int argc, char **argv) {
goto cleanup;
}
if (!(srvAdm = virNetServerNew(config->admin_min_workers,
config->admin_max_workers,
0,
config->admin_max_clients,
0,
config->admin_keepalive_interval,
config->admin_keepalive_count,
!!config->admin_keepalive_required,
NULL,
remoteAdmClientInitHook,
NULL,
remoteAdmClientFreeFunc,
dmn))) {
ret = VIR_DAEMON_ERR_INIT;
goto cleanup;
}
if (virNetDaemonAddServer(dmn, srvAdm) < 0) {
ret = VIR_DAEMON_ERR_INIT;
goto cleanup;
}
if (!(adminProgram = virNetServerProgramNew(ADMIN_PROGRAM,
ADMIN_PROTOCOL_VERSION,
adminProcs,
adminNProcs))) {
ret = VIR_DAEMON_ERR_INIT;
goto cleanup;
}
if (virNetServerAddProgram(srvAdm, adminProgram) < 0) {
ret = VIR_DAEMON_ERR_INIT;
goto cleanup;
}
if (timeout != -1) {
VIR_DEBUG("Registering shutdown timeout %d", timeout);
virNetDaemonAutoShutdown(dmn, timeout);
@ -1453,8 +1529,11 @@ int main(int argc, char **argv) {
virHookCall(VIR_HOOK_DRIVER_DAEMON, "-", VIR_HOOK_DAEMON_OP_START,
0, "start", NULL, NULL);
if (daemonSetupNetworking(srv, config,
sock_file, sock_file_ro,
if (daemonSetupNetworking(srv, srvAdm,
config,
sock_file,
sock_file_ro,
sock_file_adm,
ipsock, privileged) < 0) {
ret = VIR_DAEMON_ERR_NETWORK;
goto cleanup;
@ -1507,9 +1586,11 @@ int main(int argc, char **argv) {
virObjectUnref(remoteProgram);
virObjectUnref(lxcProgram);
virObjectUnref(qemuProgram);
virObjectUnref(adminProgram);
virNetDaemonClose(dmn);
virObjectUnref(dmn);
virObjectUnref(srv);
virObjectUnref(srvAdm);
virNetlinkShutdown();
if (statuswrite != -1) {
if (ret != 0) {
@ -1526,6 +1607,7 @@ int main(int argc, char **argv) {
VIR_FREE(sock_file);
VIR_FREE(sock_file_ro);
VIR_FREE(sock_file_adm);
VIR_FREE(pid_file);
VIR_FREE(remote_config_file);
VIR_FREE(run_dir);

14
daemon/libvirtd.h
View File

@ -1,7 +1,7 @@
/*
* libvirtd.h: daemon data structure definitions
*
* Copyright (C) 2006-2014 Red Hat, Inc.
* Copyright (C) 2006-2015 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
@ -30,9 +30,11 @@
# include <rpc/types.h>
# include <rpc/xdr.h>
# include "remote_protocol.h"
# include "admin_protocol.h"
# include "lxc_protocol.h"
# include "qemu_protocol.h"
# include "virthread.h"
# if WITH_SASL
# include "virnetsaslcontext.h"
# endif
@ -42,6 +44,8 @@ typedef struct daemonClientStream daemonClientStream;
typedef daemonClientStream *daemonClientStreamPtr;
typedef struct daemonClientPrivate daemonClientPrivate;
typedef daemonClientPrivate *daemonClientPrivatePtr;
typedef struct daemonAdmClientPrivate daemonAdmClientPrivate;
typedef daemonAdmClientPrivate *daemonAdmClientPrivatePtr;
typedef struct daemonClientEventCallback daemonClientEventCallback;
typedef daemonClientEventCallback *daemonClientEventCallbackPtr;
@ -71,6 +75,14 @@ struct daemonClientPrivate {
bool keepalive_supported;
};
/* Separate private data for admin connection */
struct daemonAdmClientPrivate {
/* Just a placeholder, not that there is anything to be locked */
virMutex lock;
virNetDaemonPtr dmn;
};
# if WITH_SASL
extern virNetSASLContextPtr saslCtxt;
# endif

1
po/POTFILES.in
View File

@ -1,3 +1,4 @@
daemon/admin_server.c
daemon/libvirtd-config.c
daemon/libvirtd.c
daemon/qemu_dispatch.h