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Node device driver for HAL and DeviceKit (David Lively)

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This commit is contained in:
Daniel P. Berrange 2008-11-21 12:27:11 +00:00
parent 149322c530
commit 620d4be7ae
12 changed files with 1647 additions and 1 deletions
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17
ChangeLog
View File

@ -1,3 +1,20 @@
Fri Nov 21 12:23:14 BST 2008 Daniel P. Berrange <berrange@redhat.com>
Primary internal driver for node devices with HAL (default)
and DeviceKit (optional, unfinished) (David Lively)
* configure.in: Probe for HAL & DeviceKit libraries
* po/POTFILES.in: Add new source files
* qemud/Makefile.am: Link to node device driver
* qemud/qemud.c: Load node device driver implementation
* src/Makefile.am: Buid node device drivers
* src/libvirt_sym.version.in: Export internal symbols needed
by node device driver
* src/node_device.c, src/node_device.h: Common driver
routines
* src/node_device_hal.c: HAL specific device routines
* src/node_device_devkit.c: DeviceKit specific routines
* src/node_device_conf.h: Add dbusWatch handle field
Fri Nov 21 12:20:14 BST 2008 Daniel P. Berrange <berrange@redhat.com>
* src/Makefile.am, src/node_device_conf.c, src/node_device_conf.h:

112
configure.in
View File

@ -1105,6 +1105,108 @@ test "$enable_shared" = no && lt_cv_objdir=.
LV_LIBTOOL_OBJDIR=${lt_cv_objdir-.}
AC_SUBST([LV_LIBTOOL_OBJDIR])
dnl HAL or DeviceKit library for host device enumeration
HAL_REQUIRED=0.0
HAL_CFLAGS=
HAL_LIBS=
AC_ARG_WITH([hal],
[ --with-hal use HAL for host device enumeration],
[],
[with_hal=check])
if test "$with_libvirtd" = "no" ; then
with_hal=no
fi
if test "x$with_hal" = "xyes" -o "x$with_hal" = "xcheck"; then
PKG_CHECK_MODULES(HAL, hal >= $HAL_REQUIRED,
[with_hal=yes], [
if test "x$with_hal" = "xcheck" ; then
with_hal=no
else
AC_MSG_ERROR(
[You must install hal-devel >= $HAL_REQUIRED to compile libvirt])
fi
])
if test "x$with_hal" = "xyes" ; then
AC_DEFINE_UNQUOTED([HAVE_HAL], 1,
[use HAL for host device enumeration])
old_CFLAGS=$CFLAGS
old_LDFLAGS=$LDFLAGS
CFLAGS="$CFLAGS $HAL_CFLAGS"
LDFLAGS="$LDFLAGS $HAL_LIBS"
AC_CHECK_FUNCS([libhal_get_all_devices],,[with_hal=no])
CFLAGS="$old_CFLAGS"
LDFLAGS="$old_LDFLAGS"
fi
fi
AM_CONDITIONAL([HAVE_HAL], [test "x$with_hal" = "xyes"])
AC_SUBST([HAL_CFLAGS])
AC_SUBST([HAL_LIBS])
DEVKIT_REQUIRED=0.0
DEVKIT_CFLAGS=
DEVKIT_LIBS=
AC_ARG_WITH([devkit],
[ --with-devkit use DeviceKit for host device enumeration],
[],
[with_devkit=no])
if test "$with_libvirtd" = "no" ; then
with_devkit=no
fi
dnl Extra check needed while devkit pkg-config info missing glib2 dependency
PKG_CHECK_MODULES(GLIB2, glib-2.0 >= 0.0,,[
if test "x$with_devkit" = "xcheck"; then
with_devkit=no
elif test "x$with_devkit" = "xyes"; then
AC_MSG_ERROR([required package DeviceKit requires package glib-2.0])
fi])
if test "x$with_devkit" = "xyes" -o "x$with_devkit" = "xcheck"; then
PKG_CHECK_MODULES(DEVKIT, devkit-gobject >= $DEVKIT_REQUIRED,
[with_devkit=yes], [
if test "x$with_devkit" = "xcheck" ; then
with_devkit=no
else
AC_MSG_ERROR(
[You must install DeviceKit-devel >= $DEVKIT_REQUIRED to compile libvirt])
fi
])
if test "x$with_devkit" = "xyes" ; then
AC_DEFINE_UNQUOTED([HAVE_DEVKIT], 1,
[use DeviceKit for host device enumeration])
dnl Add glib2 flags explicitly while devkit pkg-config info missing glib2 dependency
DEVKIT_CFLAGS="$GLIB2_CFLAGS $DEVKIT_CFLAGS"
DEVKIT_LIBS="$GLIB2_LIBS $DEVKIT_LIBS"
dnl Add more flags apparently required for devkit to work properly
DEVKIT_CFLAGS="$DEVKIT_CFLAGS -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT"
old_CFLAGS=$CFLAGS
old_LDFLAGS=$LDFLAGS
CFLAGS="$CFLAGS $DEVKIT_CFLAGS"
LDFLAGS="$LDFLAGS $DEVKIT_LIBS"
AC_CHECK_FUNCS([devkit_client_connect],,[with_devkit=no])
CFLAGS="$old_CFLAGS"
LDFLAGS="$old_LDFLAGS"
fi
fi
AM_CONDITIONAL([HAVE_DEVKIT], [test "x$with_devkit" = "xyes"])
AC_SUBST([DEVKIT_CFLAGS])
AC_SUBST([DEVKIT_LIBS])
with_nodedev=no;
if test "$with_devkit" = "yes" -o "$with_hal" = "yes";
then
with_nodedev=yes
AC_DEFINE_UNQUOTED([WITH_NODE_DEVICES], 1, [with node device driver])
fi
AM_CONDITIONAL([WITH_NODE_DEVICES], [test "$with_nodedev" = "yes"])
# very annoying
rm -f COPYING
cp COPYING.LIB COPYING
@ -1196,6 +1298,16 @@ AC_MSG_NOTICE([ xen: $XEN_CFLAGS $XEN_LIBS])
else
AC_MSG_NOTICE([ xen: no])
fi
if test "$with_hal" = "yes" ; then
AC_MSG_NOTICE([ hal: $HAL_CFLAGS $HAL_LIBS])
else
AC_MSG_NOTICE([ hal: no])
fi
if test "$with_devkit" = "yes" ; then
AC_MSG_NOTICE([ devkit: $DEVKIT_CFLAGS $DEVKIT_LIBS])
else
AC_MSG_NOTICE([ devkit: no])
fi
AC_MSG_NOTICE([])
AC_MSG_NOTICE([Test suite])
AC_MSG_NOTICE([])

1
po/POTFILES.in
View File

@ -13,6 +13,7 @@ src/lxc_controller.c
src/lxc_driver.c
src/network_conf.c
src/network_driver.c
src/node_device.c
src/openvz_conf.c
src/openvz_driver.c
src/proxy_internal.c

4
qemud/Makefile.am
View File

@ -111,6 +111,10 @@ endif
if WITH_NETWORK
libvirtd_LDADD += ../src/libvirt_driver_network.la
endif
if WITH_NODE_DEVICES
libvirtd_LDADD += ../src/libvirt_driver_nodedev.la
endif
endif
libvirtd_LDADD += ../src/libvirt.la

7
qemud/qemud.c
View File

@ -79,6 +79,9 @@
#ifdef WITH_STORAGE_DIR
#include "storage_driver.h"
#endif
#ifdef WITH_NODE_DEVICES
#include "node_device.h"
#endif
#endif
@ -763,6 +766,7 @@ static struct qemud_server *qemudInitialize(int sigread) {
virDriverLoadModule("uml");
virDriverLoadModule("network");
virDriverLoadModule("storage");
virDriverLoadModule("nodedev");
#else
#ifdef WITH_QEMU
qemuRegister();
@ -779,6 +783,9 @@ static struct qemud_server *qemudInitialize(int sigread) {
#ifdef WITH_STORAGE_DIR
storageRegister();
#endif
#if defined(HAVE_HAL) || defined(HAVE_DEVKIT)
nodedevRegister();
#endif
#endif
virEventRegisterImpl(virEventAddHandleImpl,

43
src/Makefile.am
View File

@ -157,6 +157,14 @@ STORAGE_HELPER_DISK_SOURCES = \
parthelper.c
NODE_DEVICE_DRIVER_SOURCES = \
node_device.c node_device.h
NODE_DEVICE_DRIVER_HAL_SOURCES = \
node_device_hal.c
NODE_DEVICE_DRIVER_DEVKIT_SOURCES = \
node_device_devkit.c
#########################
#
@ -330,6 +338,36 @@ if WITH_STORAGE_DISK
libvirt_driver_storage_la_SOURCES += $(STORAGE_DRIVER_DISK_SOURCES)
endif
if WITH_NODE_DEVICES
# Needed to keep automake quiet about conditionals
if WITH_DRIVER_MODULES
mod_LTLIBRARIES += libvirt_driver_nodedev.la
else
noinst_LTLIBRARIES += libvirt_driver_nodedev.la
# Stateful, so linked to daemon instead
#libvirt_la_LIBADD += libvirt_driver_nodedev.la
endif
libvirt_driver_nodedev_la_SOURCES = $(NODE_DEVICE_DRIVER_SOURCES)
libvirt_driver_nodedev_la_CFLAGS =
libvirt_driver_nodedev_la_LDFLAGS =
if HAVE_HAL
libvirt_driver_nodedev_la_SOURCES += $(NODE_DEVICE_DRIVER_HAL_SOURCES)
libvirt_driver_nodedev_la_CFLAGS += $(HAL_CFLAGS)
libvirt_driver_nodedev_la_LDFLAGS += $(HAL_LIBS)
endif
if HAVE_DEVKIT
libvirt_driver_nodedev_la_SOURCES += $(NODE_DEVICE_DRIVER_DEVKIT_SOURCES)
libvirt_driver_nodedev_la_CFLAGS += $(DEVKIT_CFLAGS)
libvirt_driver_nodedev_la_LDFLAGS += $(DEVKIT_LIBS)
endif
if WITH_DRIVER_MODULES
libvirt_driver_nodedev_la_LDFLAGS += -module -avoid-version
endif
endif
# Add all conditional sources just in case...
EXTRA_DIST += \
$(TEST_DRIVER_SOURCES) \
@ -344,7 +382,10 @@ EXTRA_DIST += \
$(STORAGE_DRIVER_FS_SOURCES) \
$(STORAGE_DRIVER_LVM_SOURCES) \
$(STORAGE_DRIVER_ISCSI_SOURCES) \
$(STORAGE_DRIVER_DISK_SOURCES)
$(STORAGE_DRIVER_DISK_SOURCES) \
$(NODE_DEVICE_DRIVER_SOURCES) \
$(NODE_DEVICE_DRIVER_HAL_SOURCES) \
$(NODE_DEVICE_DRIVER_DEVKIT_SOURCES)
# Empty source list - it merely links a bunch of convenience libs together

14
src/libvirt_sym.version.in
View File

@ -327,6 +327,7 @@ LIBVIRT_PRIVATE_@VERSION@ {
virGetNetwork;
virGetStoragePool;
virGetStorageVol;
virGetNodeDevice;
virUnrefDomain;
@ -451,6 +452,7 @@ LIBVIRT_PRIVATE_@VERSION@ {
virRegisterNetworkDriver;
virRegisterStateDriver;
virRegisterStorageDriver;
virRegisterDeviceMonitor;
/* memory.h */
@ -481,6 +483,16 @@ LIBVIRT_PRIVATE_@VERSION@ {
virNodeInfoPopulate;
/* node_device_conf.h */
virNodeDeviceObjRemove;
virNodeDevCapTypeToString;
virNodeDeviceFindByName;
virNodeDeviceObjListFree;
virNodeDeviceDefFree;
virNodeDevCapsDefFree;
virNodeDeviceDefFormat;
/* qparams.h */
qparam_get_query;
qparam_query_parse;
@ -539,6 +551,7 @@ LIBVIRT_PRIVATE_@VERSION@ {
virStrToLong_i;
virStrToLong_ll;
virStrToLong_ull;
virStrToLong_ui;
virFileLinkPointsTo;
saferead;
safewrite;
@ -558,6 +571,7 @@ LIBVIRT_PRIVATE_@VERSION@ {
virFileOpenTty;
virFileReadLimFD;
virFileReadPid;
virFileLinkPointsTo;
virParseNumber;
virRun;
virSkipSpaces;

213
src/node_device.c Normal file
View File

@ -0,0 +1,213 @@
/*
* node_device.c: node device enumeration
*
* Copyright (C) 2008 Virtual Iron Software, Inc.
* Copyright (C) 2008 David F. Lively
*
* 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: David F. Lively <dlively@virtualiron.com>
*/
#include <config.h>
#include <unistd.h>
#include <errno.h>
#include "virterror_internal.h"
#include "datatypes.h"
#include "memory.h"
#include "node_device_conf.h"
#include "node_device.h"
static int dev_has_cap(const virNodeDeviceObjPtr dev, const char *cap)
{
virNodeDevCapsDefPtr caps = dev->def->caps;
while (caps) {
if (STREQ(cap, virNodeDevCapTypeToString(caps->type)))
return 1;
caps = caps->next;
}
return 0;
}
static int nodeNumOfDevices(virConnectPtr conn,
const char *cap,
unsigned int flags ATTRIBUTE_UNUSED)
{
virDeviceMonitorStatePtr driver = conn->devMonPrivateData;
int ndevs = 0;
unsigned int i;
for (i = 0; i < driver->devs.count; i++)
if ((cap == NULL) ||
dev_has_cap(driver->devs.objs[i], cap))
++ndevs;
return ndevs;
}
static int
nodeListDevices(virConnectPtr conn,
const char *cap,
char **const names, int maxnames,
unsigned int flags ATTRIBUTE_UNUSED)
{
virDeviceMonitorStatePtr driver = conn->devMonPrivateData;
int ndevs = 0;
unsigned int i;
for (i = 0; i < driver->devs.count && ndevs < maxnames; i++)
if (cap == NULL ||
dev_has_cap(driver->devs.objs[i], cap))
if ((names[ndevs++] = strdup(driver->devs.objs[i]->def->name)) == NULL)
goto failure;
return ndevs;
failure:
--ndevs;
while (--ndevs >= 0)
VIR_FREE(names[ndevs]);
return -1;
}
static virNodeDevicePtr nodeDeviceLookupByName(virConnectPtr conn,
const char *name)
{
virDeviceMonitorStatePtr driver = conn->devMonPrivateData;
virNodeDeviceObjPtr obj = virNodeDeviceFindByName(&driver->devs, name);
if (!obj) {
virNodeDeviceReportError(conn, VIR_ERR_INVALID_NODE_DEVICE,
"%s", _("no node device with matching name"));
return NULL;
}
return virGetNodeDevice(conn, name);
}
static char *nodeDeviceDumpXML(virNodeDevicePtr dev,
unsigned int flags ATTRIBUTE_UNUSED)
{
virDeviceMonitorStatePtr driver = dev->conn->devMonPrivateData;
virNodeDeviceObjPtr obj = virNodeDeviceFindByName(&driver->devs, dev->name);
if (!obj) {
virNodeDeviceReportError(dev->conn, VIR_ERR_INVALID_NODE_DEVICE,
"%s", _("no node device with matching name"));
return NULL;
}
return virNodeDeviceDefFormat(dev->conn, obj->def);
}
static char *nodeDeviceGetParent(virNodeDevicePtr dev)
{
virDeviceMonitorStatePtr driver = dev->conn->devMonPrivateData;
virNodeDeviceObjPtr obj = virNodeDeviceFindByName(&driver->devs, dev->name);
if (!obj) {
virNodeDeviceReportError(dev->conn, VIR_ERR_INVALID_NODE_DEVICE,
"%s", _("no node device with matching name"));
return NULL;
}
return obj->def->parent;
}
static int nodeDeviceNumOfCaps(virNodeDevicePtr dev)
{
virDeviceMonitorStatePtr driver = dev->conn->devMonPrivateData;
virNodeDeviceObjPtr obj = virNodeDeviceFindByName(&driver->devs, dev->name);
virNodeDevCapsDefPtr caps;
int ncaps = 0;
if (!obj) {
virNodeDeviceReportError(dev->conn, VIR_ERR_INVALID_NODE_DEVICE,
"%s", _("no node device with matching name"));
return -1;
}
for (caps = obj->def->caps; caps; caps = caps->next)
++ncaps;
return ncaps;
}
static int
nodeDeviceListCaps(virNodeDevicePtr dev, char **const names, int maxnames)
{
virDeviceMonitorStatePtr driver = dev->conn->devMonPrivateData;
virNodeDeviceObjPtr obj = virNodeDeviceFindByName(&driver->devs, dev->name);
virNodeDevCapsDefPtr caps;
int ncaps = 0;
if (!obj) {
virNodeDeviceReportError(dev->conn, VIR_ERR_INVALID_NODE_DEVICE,
"%s", _("no node device with matching name"));
return -1;
}
for (caps = obj->def->caps; caps && ncaps < maxnames; caps = caps->next) {
names[ncaps] = strdup(virNodeDevCapTypeToString(caps->type));
if (names[ncaps++] == NULL)
goto failure;
}
return ncaps;
failure:
--ncaps;
while (--ncaps >= 0)
VIR_FREE(names[ncaps]);
return -1;
}
void registerCommonNodeFuncs(virDeviceMonitorPtr driver)
{
driver->numOfDevices = nodeNumOfDevices;
driver->listDevices = nodeListDevices;
driver->deviceLookupByName = nodeDeviceLookupByName;
driver->deviceDumpXML = nodeDeviceDumpXML;
driver->deviceGetParent = nodeDeviceGetParent;
driver->deviceNumOfCaps = nodeDeviceNumOfCaps;
driver->deviceListCaps = nodeDeviceListCaps;
}
int nodedevRegister(void) {
#if defined(HAVE_HAL) && defined(HAVE_DEVKIT)
/* Register only one of these two - they conflict */
if (halNodeRegister() == -1)
return devkitNodeRegister();
return 0;
#else
#ifdef HAVE_HAL
return halNodeRegister();
#endif
#ifdef HAVE_DEVKIT
return devkitNodeRegister();
#endif
#endif
}

41
src/node_device.h Normal file
View File

@ -0,0 +1,41 @@
/*
* node_device.h: node device enumeration
*
* Copyright (C) 2008 Virtual Iron Software, Inc.
* Copyright (C) 2008 David F. Lively
*
* 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: David F. Lively <dlively@virtualiron.com>
*/
#ifndef __VIR_NODE_DEVICE_H__
#define __VIR_NODE_DEVICE_H__
#include "internal.h"
#include "driver.h"
#ifdef HAVE_HAL
int halNodeRegister(void);
#endif
#ifdef HAVE_DEVKIT
int devkitNodeRegister(void);
#endif
void registerCommonNodeFuncs(virDeviceMonitorPtr mon);
int nodedevRegister(void);
#endif /* __VIR_NODE_DEVICE_H__ */

1
src/node_device_conf.h
View File

@ -161,6 +161,7 @@ struct _virNodeDeviceObjList {
typedef struct _virDeviceMonitorState virDeviceMonitorState;
typedef virDeviceMonitorState *virDeviceMonitorStatePtr;
struct _virDeviceMonitorState {
int dbusWatch;
virNodeDeviceObjList devs; /* currently-known devices */
void *privateData; /* driver-specific private data */
};

429
src/node_device_devkit.c Normal file
View File

@ -0,0 +1,429 @@
/*
* node_device_devkit.c: node device enumeration - DeviceKit-based implementation
*
* Copyright (C) 2008 Virtual Iron Software, Inc.
* Copyright (C) 2008 David F. Lively
*
* 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: David F. Lively <dlively@virtualiron.com>
*/
#include <config.h>
#include <devkit-gobject.h>
#include "node_device_conf.h"
#include "virterror_internal.h"
#include "driver.h"
#include "datatypes.h"
#include "event.h"
#include "memory.h"
#include "uuid.h"
#include "node_device.h"
/*
* Host device enumeration (DeviceKit implementation)
*/
static virDeviceMonitorStatePtr driverState;
#define DEBUG(fmt,...) VIR_DEBUG(__FILE__, fmt, __VA_ARGS__)
#define DEBUG0(msg) VIR_DEBUG(__FILE__, "%s", msg)
#define CONN_DRV_STATE(conn) \
((virDeviceMonitorStatePtr)((conn)->devMonPrivateData))
#define DRV_STATE_DKCLIENT(ds) ((DevkitClient *)((ds)->privateData))
#define CONN_DKCLIENT(conn) DRV_STATE_DKCLIENT(CONN_DRV_STATE(conn))
#define NODE_DEV_DKDEV(obj) ((DevkitDevice *)((obj)->privateData)
static int get_str_prop(DevkitDevice *dkdev, const char *prop, char **val_p)
{
char *val = devkit_device_dup_property_as_str(dkdev, prop);
if (val) {
if (*val) {
*val_p = val;
return 0;
} else {
/* Treat empty strings as NULL values */
VIR_FREE(val);
}
}
return -1;
}
#if 0
static int get_int_prop(DevkitDevice *dkdev, const char *prop, int *val_p)
{
if (! devkit_device_has_property(dkdev, prop))
return -1;
*val_p = devkit_device_get_property_as_int(dkdev, prop);
return 0;
}
static int get_uint64_prop(DevkitDevice *dkdev, const char *prop,
unsigned long long *val_p)
{
if (! devkit_device_has_property(dkdev, prop))
return -1;
*val_p = devkit_device_get_property_as_uint64(dkdev, prop);
return 0;
}
#endif
static int gather_pci_cap(DevkitDevice *dkdev,
union _virNodeDevCapData *d)
{
const char *sysfs_path = devkit_device_get_native_path(dkdev);
if (sysfs_path != NULL) {
char *p = strrchr(sysfs_path, '/');
if (p) {
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.domain);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.bus);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.slot);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.function);
}
}
return 0;
}
static int gather_usb_cap(DevkitDevice *dkdev,
union _virNodeDevCapData *d)
{
(void)get_str_prop(dkdev, "ID_VENDOR", &d->usb_dev.vendor_name);
(void)get_str_prop(dkdev, "ID_MODEL", &d->usb_dev.product_name);
return 0;
}
static int gather_net_cap(DevkitDevice *dkdev,
union _virNodeDevCapData *d)
{
const char *sysfs_path = devkit_device_get_native_path(dkdev);
const char *interface;
if (sysfs_path == NULL)
return -1;
interface = strrchr(sysfs_path, '/');
if (!interface || !*interface || !*(++interface))
return -1;
if ((d->net.interface = strdup(interface)) == NULL)
return -1;
d->net.subtype = VIR_NODE_DEV_CAP_NET_LAST;
return 0;
}
static int gather_block_cap(DevkitDevice *dkdev,
union _virNodeDevCapData *d)
{
const char *device = devkit_device_get_device_file(dkdev);
if (device && ((d->block.device = strdup(device)) == NULL))
return -1;
return 0;
}
struct _caps_tbl_entry {
const char *cap_name;
enum virNodeDevCapType type;
int (*gather_fn)(DevkitDevice *dkdev,
union _virNodeDevCapData *data);
};
typedef struct _caps_tbl_entry caps_tbl_entry;
static caps_tbl_entry caps_tbl[] = {
{ "pci", VIR_NODE_DEV_CAP_PCI_DEV, gather_pci_cap },
{ "usb", VIR_NODE_DEV_CAP_USB_DEV, gather_usb_cap },
{ "net", VIR_NODE_DEV_CAP_NET, gather_net_cap },
{ "block", VIR_NODE_DEV_CAP_BLOCK, gather_block_cap },
// TODO: more caps!
};
/* qsort/bsearch string comparator */
static int cmpstringp(const void *p1, const void *p2)
{
/* from man 3 qsort */
return strcmp(* (char * const *) p1, * (char * const *) p2);
}
static int gather_capability(DevkitDevice *dkdev,
const char *cap_name,
virNodeDevCapsDefPtr *caps_p)
{
size_t caps_tbl_len = sizeof(caps_tbl) / sizeof(caps_tbl[0]);
caps_tbl_entry *entry;
entry = bsearch(&cap_name, caps_tbl, caps_tbl_len,
sizeof(caps_tbl[0]), cmpstringp);
if (entry) {
virNodeDevCapsDefPtr caps;
if (VIR_ALLOC(caps) < 0)
return ENOMEM;
caps->type = entry->type;
if (entry->gather_fn) {
int rv = (*entry->gather_fn)(dkdev, &caps->data);
if (rv != 0) {
virNodeDevCapsDefFree(caps);
return rv;
}
}
caps->next = *caps_p;
*caps_p = caps;
}
return 0;
}
static int gather_capabilities(DevkitDevice *dkdev,
virNodeDevCapsDefPtr *caps_p)
{
const char *subsys = devkit_device_get_subsystem(dkdev);
const char *bus_name = devkit_device_get_property(dkdev, "ID_BUS");
virNodeDevCapsDefPtr caps = NULL;
int rv;
if (subsys) {
rv = gather_capability(dkdev, subsys, &caps);
if (rv != 0) goto failure;
}
if (bus_name && (subsys == NULL || !STREQ(bus_name, subsys))) {
rv = gather_capability(dkdev, bus_name, &caps);
if (rv != 0) goto failure;
}
*caps_p = caps;
return 0;
failure:
while (caps) {
virNodeDevCapsDefPtr next = caps->next;
virNodeDevCapsDefFree(caps);
caps = next;
}
return rv;
}
static void dev_create(void *_dkdev, void *_dkclient ATTRIBUTE_UNUSED)
{
DevkitDevice *dkdev = _dkdev;
const char *sysfs_path = devkit_device_get_native_path(dkdev);
virNodeDeviceObjPtr dev = NULL;
const char *name;
int rv;
if (sysfs_path == NULL)
/* Currently using basename(sysfs_path) as device name (key) */
return;
name = strrchr(sysfs_path, '/');
if (name == NULL)
name = sysfs_path;
else
++name;
if (VIR_ALLOC(dev) < 0 || VIR_ALLOC(dev->def) < 0)
goto failure;
dev->privateData = dkdev;
if ((dev->def->name = strdup(name)) == NULL)
goto failure;
// TODO: Find device parent, if any
rv = gather_capabilities(dkdev, &dev->def->caps);
if (rv != 0) goto failure;
if (VIR_REALLOC_N(driverState->devs.objs, driverState->devs.count + 1) < 0)
goto failure;
driverState->devs.objs[driverState->devs.count++] = dev;
return;
failure:
DEBUG("FAILED TO ADD dev %s", name);
if (dev)
virNodeDeviceDefFree(dev->def);
VIR_FREE(dev);
}
static int devkitDeviceMonitorStartup(void)
{
size_t caps_tbl_len = sizeof(caps_tbl) / sizeof(caps_tbl[0]);
DevkitClient *devkit_client = NULL;
GError *err = NULL;
GList *devs;
int i;
/* Ensure caps_tbl is sorted by capability name */
qsort(caps_tbl, caps_tbl_len, sizeof(caps_tbl[0]), cmpstringp);
if (VIR_ALLOC(driverState) < 0)
return -1;
// TODO: Is it really ok to call this multiple times??
// Is there something analogous to call on close?
g_type_init();
/* Get new devkit_client and connect to daemon */
devkit_client = devkit_client_new(NULL);
if (devkit_client == NULL) {
DEBUG0("devkit_client_new returned NULL");
goto failure;
}
if (!devkit_client_connect(devkit_client, &err)) {
DEBUG0("devkit_client_connect failed");
goto failure;
}
/* Populate with known devices.
*
* This really should be:
devs = devkit_client_enumerate_by_subsystem(devkit_client, NULL, &err);
if (err) {
DEBUG0("devkit_client_enumerate_by_subsystem failed");
devs = NULL;
goto failure;
}
g_list_foreach(devs, dev_create, devkit_client);
* but devkit_client_enumerate_by_subsystem currently fails when the second
* arg is null (contrary to the API documentation). So the following code
* (from Dan B) works around this by listing devices per handled subsystem.
*/
for (i = 0 ; i < ARRAY_CARDINALITY(caps_tbl) ; i++) {
const char *caps[] = { caps_tbl[i].cap_name, NULL };
devs = devkit_client_enumerate_by_subsystem(devkit_client,
caps,
&err);
if (err) {
DEBUG0("devkit_client_enumerate_by_subsystem failed");
devs = NULL;
goto failure;
}
g_list_foreach(devs, dev_create, devkit_client);
}
driverState->privateData = devkit_client;
// TODO: Register to get DeviceKit events on device changes and
// coordinate updates with queries and other operations.
return 0;
failure:
if (err) {
DEBUG("\terror[%d]: %s", err->code, err->message);
g_error_free(err);
}
if (devs) {
g_list_foreach(devs, (GFunc)g_object_unref, NULL);
g_list_free(devs);
}
if (devkit_client)
g_object_unref(devkit_client);
VIR_FREE(driverState);
return -1;
}
static int devkitDeviceMonitorShutdown(void)
{
if (driverState) {
DevkitClient *devkit_client = DRV_STATE_DKCLIENT(driverState);
virNodeDeviceObjListFree(&driverState->devs);
if (devkit_client)
g_object_unref(devkit_client);
VIR_FREE(driverState);
return 0;
}
return -1;
}
static int devkitDeviceMonitorReload(void)
{
(void)devkitDeviceMonitorShutdown();
return devkitDeviceMonitorStartup();
}
static int devkitDeviceMonitorActive(void)
{
/* Always ready to deal with a shutdown */
return 0;
}
static virDrvOpenStatus
devkitNodeDrvOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED)
{
if (driverState == NULL)
return VIR_DRV_OPEN_DECLINED;
conn->devMonPrivateData = driverState;
return VIR_DRV_OPEN_SUCCESS;
}
static int devkitNodeDrvClose(virConnectPtr conn ATTRIBUTE_UNUSED)
{
conn->devMonPrivateData = NULL;
return 0;
}
static virDeviceMonitor devkitDeviceMonitor = {
.name = "devkitDeviceMonitor",
.open = devkitNodeDrvOpen,
.close = devkitNodeDrvClose,
};
static virStateDriver devkitStateDriver = {
.initialize = devkitDeviceMonitorStartup,
.cleanup = devkitDeviceMonitorShutdown,
.reload = devkitDeviceMonitorReload,
.active = devkitDeviceMonitorActive,
};
int devkitNodeRegister(void)
{
registerCommonNodeFuncs(&devkitDeviceMonitor);
if (virRegisterDeviceMonitor(&devkitDeviceMonitor) < 0)
return -1;
return virRegisterStateDriver(&devkitStateDriver);
}

766
src/node_device_hal.c Normal file
View File

@ -0,0 +1,766 @@
/*
* node_device_hal.c: node device enumeration - HAL-based implementation
*
* Copyright (C) 2008 Virtual Iron Software, Inc.
* Copyright (C) 2008 David F. Lively
*
* 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: David F. Lively <dlively@virtualiron.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <config.h>
#include <libhal.h>
#include "node_device_conf.h"
#include "virterror_internal.h"
#include "driver.h"
#include "datatypes.h"
#include "event.h"
#include "memory.h"
#include "uuid.h"
#include "logging.h"
#include "node_device.h"
/*
* Host device enumeration (HAL implementation)
*/
static virDeviceMonitorStatePtr driverState;
#define CONN_DRV_STATE(conn) \
((virDeviceMonitorStatePtr)((conn)->devMonPrivateData))
#define DRV_STATE_HAL_CTX(ds) ((LibHalContext *)((ds)->privateData))
#define CONN_HAL_CTX(conn) DRV_STATE_HAL_CTX(CONN_DRV_STATE(conn))
#define NODE_DEV_UDI(obj) ((const char *)((obj)->privateData)
static const char *hal_name(const char *udi)
{
const char *name = strrchr(udi, '/');
if (name)
return name+1;
return udi;
}
static int get_str_prop(LibHalContext *ctxt, const char *udi,
const char *prop, char **val_p)
{
char *val = libhal_device_get_property_string(ctxt, udi, prop, NULL);
if (val) {
if (*val) {
*val_p = val;
return 0;
} else {
/* Treat empty strings as NULL values */
VIR_FREE(val);
}
}
return -1;
}
static int get_int_prop(LibHalContext *ctxt, const char *udi,
const char *prop, int *val_p)
{
DBusError err;
int val;
int rv;
dbus_error_init(&err);
val = libhal_device_get_property_int(ctxt, udi, prop, &err);
rv = dbus_error_is_set(&err);
dbus_error_free(&err);
if (rv == 0)
*val_p = val;
return rv;
}
static int get_bool_prop(LibHalContext *ctxt, const char *udi,
const char *prop, int *val_p)
{
DBusError err;
int val;
int rv;
dbus_error_init(&err);
val = libhal_device_get_property_bool(ctxt, udi, prop, &err);
rv = dbus_error_is_set(&err);
dbus_error_free(&err);
if (rv == 0)
*val_p = val;
return rv;
}
static int get_uint64_prop(LibHalContext *ctxt, const char *udi,
const char *prop, unsigned long long *val_p)
{
DBusError err;
unsigned long long val;
int rv;
dbus_error_init(&err);
val = libhal_device_get_property_uint64(ctxt, udi, prop, &err);
rv = dbus_error_is_set(&err);
dbus_error_free(&err);
if (rv == 0)
*val_p = val;
return rv;
}
static int gather_pci_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
char *sysfs_path;
if (get_str_prop(ctx, udi, "pci.linux.sysfs_path", &sysfs_path) == 0) {
char *p = strrchr(sysfs_path, '/');
if (p) {
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.domain);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.bus);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.slot);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.function);
}
VIR_FREE(sysfs_path);
}
(void)get_int_prop(ctx, udi, "pci.vendor_id", (int *)&d->pci_dev.vendor);
if (get_str_prop(ctx, udi, "pci.vendor", &d->pci_dev.vendor_name) != 0)
(void)get_str_prop(ctx, udi, "info.vendor", &d->pci_dev.vendor_name);
(void)get_int_prop(ctx, udi, "pci.product_id", (int *)&d->pci_dev.product);
if (get_str_prop(ctx, udi, "pci.product", &d->pci_dev.product_name) != 0)
(void)get_str_prop(ctx, udi, "info.product", &d->pci_dev.product_name);
return 0;
}
static int gather_usb_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "usb.interface.number",
(int *)&d->usb_if.number);
(void)get_int_prop(ctx, udi, "usb.interface.class",
(int *)&d->usb_if._class);
(void)get_int_prop(ctx, udi, "usb.interface.subclass",
(int *)&d->usb_if.subclass);
(void)get_int_prop(ctx, udi, "usb.interface.protocol",
(int *)&d->usb_if.protocol);
(void)get_str_prop(ctx, udi, "usb.interface.description",
&d->usb_if.description);
return 0;
}
static int gather_usb_device_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "usb_device.bus_number",
(int *)&d->usb_dev.bus);
(void)get_int_prop(ctx, udi, "usb_device.linux.device_number",
(int *)&d->usb_dev.device);
(void)get_int_prop(ctx, udi, "usb_device.vendor_id",
(int *)&d->usb_dev.vendor);
if (get_str_prop(ctx, udi, "usb_device.vendor",
&d->usb_dev.vendor_name) != 0)
(void)get_str_prop(ctx, udi, "info.vendor", &d->usb_dev.vendor_name);
(void)get_int_prop(ctx, udi, "usb_device.product_id",
(int *)&d->usb_dev.product);
if (get_str_prop(ctx, udi, "usb_device.product",
&d->usb_dev.product_name) != 0)
(void)get_str_prop(ctx, udi, "info.product", &d->usb_dev.product_name);
return 0;
}
static int gather_net_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
unsigned long long dummy;
(void)get_str_prop(ctx, udi, "net.interface", &d->net.interface);
(void)get_str_prop(ctx, udi, "net.address", &d->net.address);
if (get_uint64_prop(ctx, udi, "net.80203.mac_address",
&dummy) == 0)
d->net.subtype = VIR_NODE_DEV_CAP_NET_80203;
else if (get_uint64_prop(ctx, udi, "net.80211.mac_address",
&dummy) == 0)
d->net.subtype = VIR_NODE_DEV_CAP_NET_80211;
else
d->net.subtype = VIR_NODE_DEV_CAP_NET_LAST;
return 0;
}
static int gather_block_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_str_prop(ctx, udi, "block.device", &d->block.device);
return 0;
}
static int gather_scsi_host_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "scsi_host.host", (int *)&d->scsi_host.host);
return 0;
}
static int gather_scsi_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "scsi.host", (int *)&d->scsi.host);
(void)get_int_prop(ctx, udi, "scsi.bus", (int *)&d->scsi.bus);
(void)get_int_prop(ctx, udi, "scsi.target", (int *)&d->scsi.target);
(void)get_int_prop(ctx, udi, "scsi.lun", (int *)&d->scsi.lun);
(void)get_str_prop(ctx, udi, "scsi.type", &d->scsi.type);
return 0;
}
static int gather_storage_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
int val;
(void)get_str_prop(ctx, udi, "storage.bus", &d->storage.bus);
(void)get_str_prop(ctx, udi, "storage.drive_type", &d->storage.drive_type);
(void)get_str_prop(ctx, udi, "storage.model", &d->storage.model);
(void)get_str_prop(ctx, udi, "storage.vendor", &d->storage.vendor);
if (get_bool_prop(ctx, udi, "storage.removable", &val) == 0 && val) {
d->storage.flags |= VIR_NODE_DEV_CAP_STORAGE_REMOVABLE;
if (get_bool_prop(ctx, udi,
"storage.removable.media_available", &val) && val) {
d->storage.flags |=
VIR_NODE_DEV_CAP_STORAGE_REMOVABLE_MEDIA_AVAILABLE;
(void)get_uint64_prop(ctx, udi, "storage.removable.media_size",
&d->storage.removable_media_size);
}
} else {
(void)get_uint64_prop(ctx, udi, "storage.size", &d->storage.size);
}
if (get_bool_prop(ctx, udi, "storage.hotpluggable", &val) == 0 && val)
d->storage.flags |= VIR_NODE_DEV_CAP_STORAGE_HOTPLUGGABLE;
return 0;
}
static int gather_system_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
char *uuidstr;
(void)get_str_prop(ctx, udi, "system.product", &d->system.product_name);
(void)get_str_prop(ctx, udi, "system.hardware.vendor",
&d->system.hardware.vendor_name);
(void)get_str_prop(ctx, udi, "system.hardware.version",
&d->system.hardware.version);
(void)get_str_prop(ctx, udi, "system.hardware.serial",
&d->system.hardware.serial);
if (get_str_prop(ctx, udi, "system.hardware.uuid", &uuidstr) == 0) {
(void)virUUIDParse(uuidstr, d->system.hardware.uuid);
VIR_FREE(uuidstr);
}
(void)get_str_prop(ctx, udi, "system.firmware.vendor",
&d->system.firmware.vendor_name);
(void)get_str_prop(ctx, udi, "system.firmware.version",
&d->system.firmware.version);
(void)get_str_prop(ctx, udi, "system.firmware.release_date",
&d->system.firmware.release_date);
return 0;
}
struct _caps_tbl_entry {
const char *cap_name;
enum virNodeDevCapType type;
int (*gather_fn)(LibHalContext *ctx,
const char *udi,
union _virNodeDevCapData *data);
};
typedef struct _caps_tbl_entry caps_tbl_entry;
static caps_tbl_entry caps_tbl[] = {
{ "system", VIR_NODE_DEV_CAP_SYSTEM, gather_system_cap },
{ "pci", VIR_NODE_DEV_CAP_PCI_DEV, gather_pci_cap },
{ "usb", VIR_NODE_DEV_CAP_USB_INTERFACE, gather_usb_cap },
{ "usb_device", VIR_NODE_DEV_CAP_USB_DEV, gather_usb_device_cap },
{ "net", VIR_NODE_DEV_CAP_NET, gather_net_cap },
{ "block", VIR_NODE_DEV_CAP_BLOCK, gather_block_cap },
{ "scsi_host", VIR_NODE_DEV_CAP_SCSI_HOST, gather_scsi_host_cap },
{ "scsi", VIR_NODE_DEV_CAP_SCSI, gather_scsi_cap },
{ "storage", VIR_NODE_DEV_CAP_STORAGE, gather_storage_cap },
};
/* qsort/bsearch string comparator */
static int cmpstringp(const void *p1, const void *p2)
{
/* from man 3 qsort */
return strcmp(* (char * const *) p1, * (char * const *) p2);
}
static int gather_capability(LibHalContext *ctx, const char *udi,
const char *cap_name,
virNodeDevCapsDefPtr *caps_p)
{
caps_tbl_entry *entry;
entry = bsearch(&cap_name, caps_tbl, ARRAY_CARDINALITY(caps_tbl),
sizeof(caps_tbl[0]), cmpstringp);
if (entry) {
virNodeDevCapsDefPtr caps;
if (VIR_ALLOC(caps) < 0)
return ENOMEM;
caps->type = entry->type;
if (entry->gather_fn) {
int rv = (*entry->gather_fn)(ctx, udi, &caps->data);
if (rv != 0) {
virNodeDevCapsDefFree(caps);
return rv;
}
}
caps->next = *caps_p;
*caps_p = caps;
}
return 0;
}
static int gather_capabilities(LibHalContext *ctx, const char *udi,
virNodeDevCapsDefPtr *caps_p)
{
char *bus_name = NULL;
virNodeDevCapsDefPtr caps = NULL;
char **hal_cap_names;
int rv, i;
if (STREQ(udi, "/org/freedesktop/Hal/devices/computer")) {
rv = gather_capability(ctx, udi, "system", &caps);
if (rv != 0)
goto failure;
}
if (get_str_prop(ctx, udi, "info.subsystem", &bus_name) == 0) {
rv = gather_capability(ctx, udi, bus_name, &caps);
if (rv != 0)
goto failure;
}
hal_cap_names = libhal_device_get_property_strlist(ctx, udi,
"info.capabilities",
NULL);
if (hal_cap_names) {
for (i = 0; hal_cap_names[i]; i++) {
if (! (bus_name && STREQ(hal_cap_names[i], bus_name))) {
rv = gather_capability(ctx, udi, hal_cap_names[i], &caps);
if (rv != 0)
goto failure;
}
}
for (i = 0; hal_cap_names[i]; i++)
VIR_FREE(hal_cap_names[i]);
VIR_FREE(hal_cap_names);
}
VIR_FREE(bus_name);
*caps_p = caps;
return 0;
failure:
VIR_FREE(bus_name);
if (hal_cap_names) {
for (i = 0; hal_cap_names[i]; i++)
VIR_FREE(hal_cap_names[i]);
VIR_FREE(hal_cap_names);
}
while (caps) {
virNodeDevCapsDefPtr next = caps->next;
virNodeDevCapsDefFree(caps);
caps = next;
}
return rv;
}
static void free_udi(void *udi)
{
VIR_FREE(udi);
}
static void dev_create(char *udi)
{
LibHalContext *ctx = DRV_STATE_HAL_CTX(driverState);
char *parent_key = NULL;
virNodeDeviceObjPtr dev;
const char *name = hal_name(udi);
int rv;
if (VIR_ALLOC(dev) < 0 || VIR_ALLOC(dev->def) < 0)
goto failure;
dev->privateData = udi;
dev->privateFree = free_udi;
if ((dev->def->name = strdup(name)) == NULL)
goto failure;
if (get_str_prop(ctx, udi, "info.parent", &parent_key) == 0) {
dev->def->parent = strdup(hal_name(parent_key));
VIR_FREE(parent_key);
if (dev->def->parent == NULL)
goto failure;
}
rv = gather_capabilities(ctx, udi, &dev->def->caps);
if (rv != 0) goto failure;
if (VIR_REALLOC_N(driverState->devs.objs, driverState->devs.count + 1) < 0)
goto failure;
driverState->devs.objs[driverState->devs.count++] = dev;
return;
failure:
DEBUG("FAILED TO ADD dev %s", name);
if (dev)
virNodeDeviceDefFree(dev->def);
VIR_FREE(dev);
VIR_FREE(udi);
}
static void device_added(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi)
{
DEBUG0(hal_name(udi));
dev_create(strdup(udi));
}
static void device_removed(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev = virNodeDeviceFindByName(&driverState->devs,name);
DEBUG0(name);
if (dev)
virNodeDeviceObjRemove(&driverState->devs, dev);
else
DEBUG("no device named %s", name);
}
static void device_cap_added(LibHalContext *ctx,
const char *udi, const char *cap)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev = virNodeDeviceFindByName(&driverState->devs,name);
DEBUG("%s %s", cap, name);
if (dev)
(void)gather_capability(ctx, udi, cap, &dev->def->caps);
else
DEBUG("no device named %s", name);
}
static void device_cap_lost(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi,
const char *cap)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev = virNodeDeviceFindByName(&driverState->devs,name);
DEBUG("%s %s", cap, name);
if (dev) {
/* Simply "rediscover" device -- incrementally handling changes
* to sub-capabilities (like net.80203) is nasty ... so avoid it.
*/
virNodeDeviceObjRemove(&driverState->devs, dev);
dev_create(strdup(udi));
} else
DEBUG("no device named %s", name);
}
static void device_prop_modified(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi,
const char *key,
dbus_bool_t is_removed ATTRIBUTE_UNUSED,
dbus_bool_t is_added ATTRIBUTE_UNUSED)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev = virNodeDeviceFindByName(&driverState->devs,name);
DEBUG("%s %s", key, name);
if (dev) {
/* Simply "rediscover" device -- incrementally handling changes
* to properties (which are mapped into caps in very capability-
* specific ways) is nasty ... so avoid it.
*/
virNodeDeviceObjRemove(&driverState->devs, dev);
dev_create(strdup(udi));
} else
DEBUG("no device named %s", name);
}
static void dbus_watch_callback(int fdatch ATTRIBUTE_UNUSED,
int fd ATTRIBUTE_UNUSED,
int events, void *opaque)
{
DBusWatch *watch = opaque;
LibHalContext *hal_ctx = DRV_STATE_HAL_CTX(driverState);
DBusConnection *dbus_conn = libhal_ctx_get_dbus_connection(hal_ctx);
int dbus_flags = 0;
if (events & VIR_EVENT_HANDLE_READABLE)
dbus_flags |= DBUS_WATCH_READABLE;
if (events & VIR_EVENT_HANDLE_WRITABLE)
dbus_flags |= DBUS_WATCH_WRITABLE;
if (events & VIR_EVENT_HANDLE_ERROR)
dbus_flags |= DBUS_WATCH_ERROR;
if (events & VIR_EVENT_HANDLE_HANGUP)
dbus_flags |= DBUS_WATCH_HANGUP;
(void)dbus_watch_handle(watch, dbus_flags);
while (dbus_connection_dispatch(dbus_conn) == DBUS_DISPATCH_DATA_REMAINS)
/* keep dispatching while data remains */;
}
static int xlate_dbus_watch_flags(int dbus_flags)
{
unsigned int flags = 0;
if (dbus_flags & DBUS_WATCH_READABLE)
flags |= VIR_EVENT_HANDLE_READABLE;
if (dbus_flags & DBUS_WATCH_WRITABLE)
flags |= VIR_EVENT_HANDLE_WRITABLE;
if (dbus_flags & DBUS_WATCH_ERROR)
flags |= VIR_EVENT_HANDLE_ERROR;
if (dbus_flags & DBUS_WATCH_HANGUP)
flags |= VIR_EVENT_HANDLE_HANGUP;
return flags;
}
static dbus_bool_t add_dbus_watch(DBusWatch *watch,
void *data)
{
int flags = 0;
virDeviceMonitorStatePtr state = data;
if (dbus_watch_get_enabled(watch))
flags = xlate_dbus_watch_flags(dbus_watch_get_flags(watch));
if ((state->dbusWatch =
virEventAddHandle(dbus_watch_get_unix_fd(watch), flags,
dbus_watch_callback, watch, NULL)) < 0)
return 0;
return 1;
}
static void remove_dbus_watch(DBusWatch *watch ATTRIBUTE_UNUSED,
void *data)
{
virDeviceMonitorStatePtr state = data;
(void)virEventRemoveHandle(state->dbusWatch);
}
static void toggle_dbus_watch(DBusWatch *watch,
void *data)
{
int flags = 0;
virDeviceMonitorStatePtr state = data;
if (dbus_watch_get_enabled(watch))
flags = xlate_dbus_watch_flags(dbus_watch_get_flags(watch));
(void)virEventUpdateHandle(state->dbusWatch, flags);
}
static int halDeviceMonitorStartup(void)
{
LibHalContext *hal_ctx = NULL;
DBusConnection *dbus_conn = NULL;
DBusError err;
char **udi = NULL;
int num_devs, i;
/* Ensure caps_tbl is sorted by capability name */
qsort(caps_tbl, ARRAY_CARDINALITY(caps_tbl), sizeof(caps_tbl[0]),
cmpstringp);
if (VIR_ALLOC(driverState) < 0)
return -1;
/* Allocate and initialize a new HAL context */
dbus_error_init(&err);
hal_ctx = libhal_ctx_new();
if (hal_ctx == NULL) {
fprintf(stderr, "%s: libhal_ctx_new returned NULL\n", __FUNCTION__);
goto failure;
}
dbus_conn = dbus_bus_get(DBUS_BUS_SYSTEM, &err);
if (dbus_conn == NULL) {
fprintf(stderr, "%s: dbus_bus_get failed\n", __FUNCTION__);
goto failure;
}
if (!libhal_ctx_set_dbus_connection(hal_ctx, dbus_conn)) {
fprintf(stderr, "%s: libhal_ctx_set_dbus_connection failed\n",
__FUNCTION__);
goto failure;
}
if (!libhal_ctx_init(hal_ctx, &err)) {
fprintf(stderr, "%s: libhal_ctx_init failed\n", __FUNCTION__);
goto failure;
}
/* Register dbus watch callbacks */
if (!dbus_connection_set_watch_functions(dbus_conn,
add_dbus_watch,
remove_dbus_watch,
toggle_dbus_watch,
driverState, NULL)) {
fprintf(stderr, "%s: dbus_connection_set_watch_functions failed\n",
__FUNCTION__);
goto failure;
}
/* Register HAL event callbacks */
if (!libhal_ctx_set_device_added(hal_ctx, device_added) ||
!libhal_ctx_set_device_removed(hal_ctx, device_removed) ||
!libhal_ctx_set_device_new_capability(hal_ctx, device_cap_added) ||
!libhal_ctx_set_device_lost_capability(hal_ctx, device_cap_lost) ||
!libhal_ctx_set_device_property_modified(hal_ctx, device_prop_modified)) {
fprintf(stderr, "%s: setting up HAL callbacks failed\n", __FUNCTION__);
goto failure;
}
/* Populate with known devices */
driverState->privateData = hal_ctx;
udi = libhal_get_all_devices(hal_ctx, &num_devs, &err);
if (udi == NULL) {
fprintf(stderr, "%s: libhal_get_all_devices failed\n", __FUNCTION__);
goto failure;
}
for (i = 0; i < num_devs; i++)
dev_create(udi[i]);
free(udi);
return 0;
failure:
if (dbus_error_is_set(&err)) {
fprintf(stderr, "\t%s: %s\n", err.name, err.message);
dbus_error_free(&err);
}
virNodeDeviceObjListFree(&driverState->devs);
if (hal_ctx)
(void)libhal_ctx_free(hal_ctx);
if (udi) {
for (i = 0; i < num_devs; i++)
free(udi[i]);
free(udi);
}
VIR_FREE(driverState);
return -1;
}
static int halDeviceMonitorShutdown(void)
{
if (driverState) {
LibHalContext *hal_ctx = DRV_STATE_HAL_CTX(driverState);
virNodeDeviceObjListFree(&driverState->devs);
(void)libhal_ctx_shutdown(hal_ctx, NULL);
(void)libhal_ctx_free(hal_ctx);
VIR_FREE(driverState);
return 0;
}
return -1;
}
static int halDeviceMonitorReload(void)
{
(void)halDeviceMonitorShutdown();
return halDeviceMonitorStartup();
}
static int halDeviceMonitorActive(void)
{
/* Always ready to deal with a shutdown */
return 0;
}
static virDrvOpenStatus halNodeDrvOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED)
{
if (driverState == NULL)
return VIR_DRV_OPEN_DECLINED;
conn->devMonPrivateData = driverState;
return VIR_DRV_OPEN_SUCCESS;
}
static int halNodeDrvClose(virConnectPtr conn ATTRIBUTE_UNUSED)
{
conn->devMonPrivateData = NULL;
return 0;
}
static virDeviceMonitor halDeviceMonitor = {
.name = "halDeviceMonitor",
.open = halNodeDrvOpen,
.close = halNodeDrvClose,
};
static virStateDriver halStateDriver = {
.initialize = halDeviceMonitorStartup,
.cleanup = halDeviceMonitorShutdown,
.reload = halDeviceMonitorReload,
.active = halDeviceMonitorActive,
};
int halNodeRegister(void)
{
registerCommonNodeFuncs(&halDeviceMonitor);
if (virRegisterDeviceMonitor(&halDeviceMonitor) < 0)
return -1;
return virRegisterStateDriver(&halStateDriver);
}