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Internal APIs for handling node device XML configuration (David Lively)

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This commit is contained in:
Daniel P. Berrange 2008-11-21 12:20:45 +00:00
parent 0793e73c02
commit 149322c530
4 changed files with 613 additions and 2 deletions
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8
ChangeLog
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@ -1,6 +1,12 @@
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:
Internal APIs for handling node device XML configuration
(David Lively)
Fri Nov 21 12:19:14 BST 2008 Daniel P. Berrange <berrange@redhat.com>
Public API for node device enumeration
Public API for node device enumeration (David Lively)
* include/libvirt/libvirt.h.in, include/libvirt/virterror.h:
New public APIs for node device enumeration
* src/datatypes.c, src/datatypes.h: Internal impl of public

8
src/Makefile.am
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@ -136,6 +136,10 @@ STORAGE_DRIVER_SOURCES = \
storage_driver.h storage_driver.c \
storage_backend.h storage_backend.c
# Network driver generic impl APIs
NODE_DEVICE_CONF_SOURCES = \
node_device_conf.c node_device_conf.h
STORAGE_DRIVER_FS_SOURCES = \
storage_backend_fs.h storage_backend_fs.c
@ -171,7 +175,9 @@ libvirt_driver_la_SOURCES = \
$(DRIVER_SOURCES) \
$(DOMAIN_CONF_SOURCES) \
$(NETWORK_CONF_SOURCES) \
$(STORAGE_CONF_SOURCES)
$(STORAGE_CONF_SOURCES) \
$(NODE_DEVICE_CONF_SOURCES)
libvirt_driver_la_CFLAGS = $(XEN_CFLAGS)
libvirt_driver_la_LDFLAGS = $(XEN_LIBS)

404
src/node_device_conf.c Normal file
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@ -0,0 +1,404 @@
/*
* node_device_conf.c: config handling for node devices
*
* 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 "memory.h"
#include "node_device_conf.h"
#include "memory.h"
#include "xml.h"
#include "util.h"
#include "buf.h"
#include "uuid.h"
VIR_ENUM_IMPL(virNodeDevCap, VIR_NODE_DEV_CAP_LAST,
"system",
"pci",
"usb_device",
"usb",
"net",
"block",
"scsi_host",
"scsi",
"storage");
VIR_ENUM_IMPL(virNodeDevNetCap, VIR_NODE_DEV_CAP_NET_LAST,
"80203",
"80211");
#define virNodeDeviceLog(msg...) fprintf(stderr, msg)
virNodeDeviceObjPtr virNodeDeviceFindByName(const virNodeDeviceObjListPtr devs,
const char *name)
{
unsigned int i;
for (i = 0; i < devs->count; i++)
if (STREQ(devs->objs[i]->def->name, name))
return devs->objs[i];
return NULL;
}
void virNodeDeviceDefFree(virNodeDeviceDefPtr def)
{
virNodeDevCapsDefPtr caps;
if (!def)
return;
VIR_FREE(def->name);
VIR_FREE(def->parent);
caps = def->caps;
while (caps) {
virNodeDevCapsDefPtr next = caps->next;
virNodeDevCapsDefFree(caps);
caps = next;
}
VIR_FREE(def);
}
void virNodeDeviceObjFree(virNodeDeviceObjPtr dev)
{
if (!dev)
return;
virNodeDeviceDefFree(dev->def);
if (dev->privateFree)
(*dev->privateFree)(dev->privateData);
VIR_FREE(dev);
}
void virNodeDeviceObjListFree(virNodeDeviceObjListPtr devs)
{
unsigned int i;
for (i = 0 ; i < devs->count ; i++)
virNodeDeviceObjFree(devs->objs[i]);
VIR_FREE(devs->objs);
devs->count = 0;
}
virNodeDeviceObjPtr virNodeDeviceAssignDef(virConnectPtr conn,
virNodeDeviceObjListPtr devs,
const virNodeDeviceDefPtr def)
{
virNodeDeviceObjPtr device;
if ((device = virNodeDeviceFindByName(devs, def->name))) {
virNodeDeviceDefFree(device->def);
device->def = def;
return device;
}
if (VIR_ALLOC(device) < 0) {
virNodeDeviceReportError(conn, VIR_ERR_NO_MEMORY, NULL);
return NULL;
}
device->def = def;
if (VIR_REALLOC_N(devs->objs, devs->count+1) < 0) {
device->def = NULL;
virNodeDeviceObjFree(device);
virNodeDeviceReportError(conn, VIR_ERR_NO_MEMORY, NULL);
return NULL;
}
devs->objs[devs->count++] = device;
return device;
}
void virNodeDeviceObjRemove(virNodeDeviceObjListPtr devs,
const virNodeDeviceObjPtr dev)
{
unsigned int i;
for (i = 0; i < devs->count; i++) {
if (devs->objs[i] == dev) {
virNodeDeviceObjFree(devs->objs[i]);
if (i < (devs->count - 1))
memmove(devs->objs + i, devs->objs + i + 1,
sizeof(*(devs->objs)) * (devs->count - (i + 1)));
if (VIR_REALLOC_N(devs->objs, devs->count - 1) < 0) {
; /* Failure to reduce memory allocation isn't fatal */
}
devs->count--;
break;
}
}
}
char *virNodeDeviceDefFormat(virConnectPtr conn,
const virNodeDeviceDefPtr def)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virNodeDevCapsDefPtr caps = def->caps;
char *tmp;
virBufferAddLit(&buf, "<device>\n");
virBufferEscapeString(&buf, " <name>%s</name>\n", def->name);
if (def->parent)
virBufferEscapeString(&buf, " <parent>%s</parent>\n", def->parent);
for (caps = def->caps; caps; caps = caps->next) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
union _virNodeDevCapData *data = &caps->data;
virBufferVSprintf(&buf, " <capability type='%s'>\n",
virNodeDevCapTypeToString(caps->type));
switch (caps->type) {
case VIR_NODE_DEV_CAP_SYSTEM:
if (data->system.product_name)
virBufferEscapeString(&buf, " <product>%s</product>\n",
data->system.product_name);
virBufferAddLit(&buf, " <hardware>\n");
if (data->system.hardware.vendor_name)
virBufferEscapeString(&buf, " <vendor>%s</vendor>\n",
data->system.hardware.vendor_name);
if (data->system.hardware.version)
virBufferEscapeString(&buf, " <version>%s</version>\n",
data->system.hardware.version);
if (data->system.hardware.serial)
virBufferEscapeString(&buf, " <serial>%s</serial>\n",
data->system.hardware.serial);
virUUIDFormat(data->system.hardware.uuid, uuidstr);
virBufferVSprintf(&buf, " <uuid>%s</uuid>\n", uuidstr);
virBufferAddLit(&buf, " </hardware>\n");
virBufferAddLit(&buf, " <firmware>\n");
if (data->system.firmware.vendor_name)
virBufferEscapeString(&buf, " <vendor>%s</vendor>\n",
data->system.firmware.vendor_name);
if (data->system.firmware.version)
virBufferEscapeString(&buf, " <version>%s</version>\n",
data->system.firmware.version);
if (data->system.firmware.release_date)
virBufferEscapeString(&buf,
" <release_date>%s</release_date>\n",
data->system.firmware.release_date);
virBufferAddLit(&buf, " </firmware>\n");
break;
case VIR_NODE_DEV_CAP_PCI_DEV:
virBufferVSprintf(&buf, " <domain>%d</domain>\n",
data->pci_dev.domain);
virBufferVSprintf(&buf, " <bus>%d</bus>\n", data->pci_dev.bus);
virBufferVSprintf(&buf, " <slot>%d</slot>\n",
data->pci_dev.slot);
virBufferVSprintf(&buf, " <function>%d</function>\n",
data->pci_dev.function);
virBufferVSprintf(&buf, " <product id='%d'",
data->pci_dev.product);
if (data->pci_dev.product_name)
virBufferEscapeString(&buf, ">%s</product>\n",
data->pci_dev.product_name);
else
virBufferAddLit(&buf, " />\n");
virBufferVSprintf(&buf, " <vendor id='%d'",
data->pci_dev.vendor);
if (data->pci_dev.vendor_name)
virBufferEscapeString(&buf, ">%s</vendor>\n",
data->pci_dev.vendor_name);
else
virBufferAddLit(&buf, " />\n");
break;
case VIR_NODE_DEV_CAP_USB_DEV:
virBufferVSprintf(&buf, " <bus>%d</bus>\n", data->usb_dev.bus);
virBufferVSprintf(&buf, " <device>%d</device>\n",
data->usb_dev.device);
virBufferVSprintf(&buf, " <product id='%d'",
data->usb_dev.product);
if (data->usb_dev.product_name)
virBufferEscapeString(&buf, ">%s</product>\n",
data->usb_dev.product_name);
else
virBufferAddLit(&buf, " />\n");
virBufferVSprintf(&buf, " <vendor id='%d'",
data->usb_dev.vendor);
if (data->usb_dev.vendor_name)
virBufferEscapeString(&buf, ">%s</vendor>\n",
data->usb_dev.vendor_name);
else
virBufferAddLit(&buf, " />\n");
break;
case VIR_NODE_DEV_CAP_USB_INTERFACE:
virBufferVSprintf(&buf, " <number>%d</number>\n",
data->usb_if.number);
virBufferVSprintf(&buf, " <class>%d</class>\n",
data->usb_if._class);
virBufferVSprintf(&buf, " <subclass>%d</subclass>\n",
data->usb_if.subclass);
virBufferVSprintf(&buf, " <protocol>%d</protocol>\n",
data->usb_if.protocol);
if (data->usb_if.description)
virBufferVSprintf(&buf, " <description>%s</description>\n",
data->usb_if.description);
break;
case VIR_NODE_DEV_CAP_NET:
virBufferVSprintf(&buf, " <interface>%s</interface>\n",
data->net.interface);
if (data->net.address)
virBufferVSprintf(&buf, " <address>%s</address>\n",
data->net.address);
if (data->net.subtype != VIR_NODE_DEV_CAP_NET_LAST) {
const char *subtyp =
virNodeDevNetCapTypeToString(data->net.subtype);
virBufferVSprintf(&buf, " <capability type='%s'/>\n", subtyp);
}
break;
case VIR_NODE_DEV_CAP_BLOCK:
virBufferVSprintf(&buf, " <device>%s</device>\n",
data->block.device);
break;
case VIR_NODE_DEV_CAP_SCSI_HOST:
virBufferVSprintf(&buf, " <host>%d</host>\n",
data->scsi_host.host);
break;
case VIR_NODE_DEV_CAP_SCSI:
virBufferVSprintf(&buf, " <host>%d</host>\n", data->scsi.host);
virBufferVSprintf(&buf, " <bus>%d</bus>\n", data->scsi.bus);
virBufferVSprintf(&buf, " <target>%d</target>\n",
data->scsi.target);
virBufferVSprintf(&buf, " <lun>%d</lun>\n", data->scsi.lun);
if (data->scsi.type)
virBufferVSprintf(&buf, " <type>%s</type>\n",
data->scsi.type);
break;
case VIR_NODE_DEV_CAP_STORAGE:
if (data->storage.bus)
virBufferVSprintf(&buf, " <bus>%s</bus>\n",
data->storage.bus);
if (data->storage.drive_type)
virBufferVSprintf(&buf, " <drive_type>%s</drive_type>\n",
data->storage.drive_type);
if (data->storage.model)
virBufferVSprintf(&buf, " <model>%s</model>\n",
data->storage.model);
if (data->storage.vendor)
virBufferVSprintf(&buf, " <vendor>%s</vendor>\n",
data->storage.vendor);
if (data->storage.flags & VIR_NODE_DEV_CAP_STORAGE_REMOVABLE) {
int avl = data->storage.flags &
VIR_NODE_DEV_CAP_STORAGE_REMOVABLE_MEDIA_AVAILABLE;
virBufferAddLit(&buf, " <capability type='removable'>\n");
virBufferVSprintf(&buf,
" <media_available>%d"
"</media_available>\n", avl ? 1 : 0);
virBufferVSprintf(&buf, " <media_size>%llu</media_size>\n",
data->storage.removable_media_size);
virBufferAddLit(&buf, " </capability>\n");
} else {
virBufferVSprintf(&buf, " <size>%llu</size>\n",
data->storage.size);
}
if (data->storage.flags & VIR_NODE_DEV_CAP_STORAGE_HOTPLUGGABLE)
virBufferAddLit(&buf,
" <capability type='hotpluggable' />\n");
break;
case VIR_NODE_DEV_CAP_LAST:
/* ignore special LAST value */
break;
}
virBufferAddLit(&buf, " </capability>\n");
}
virBufferAddLit(&buf, "</device>\n");
if (virBufferError(&buf))
goto no_memory;
return virBufferContentAndReset(&buf);
no_memory:
virNodeDeviceReportError(conn, VIR_ERR_NO_MEMORY, NULL);
tmp = virBufferContentAndReset(&buf);
VIR_FREE(tmp);
return NULL;
}
void virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps)
{
union _virNodeDevCapData *data = &caps->data;
switch (caps->type) {
case VIR_NODE_DEV_CAP_SYSTEM:
VIR_FREE(data->system.product_name);
VIR_FREE(data->system.hardware.vendor_name);
VIR_FREE(data->system.hardware.version);
VIR_FREE(data->system.hardware.serial);
VIR_FREE(data->system.firmware.vendor_name);
VIR_FREE(data->system.firmware.version);
VIR_FREE(data->system.firmware.release_date);
break;
case VIR_NODE_DEV_CAP_PCI_DEV:
VIR_FREE(data->pci_dev.product_name);
VIR_FREE(data->pci_dev.vendor_name);
break;
case VIR_NODE_DEV_CAP_USB_DEV:
VIR_FREE(data->usb_dev.product_name);
VIR_FREE(data->usb_dev.vendor_name);
break;
case VIR_NODE_DEV_CAP_USB_INTERFACE:
VIR_FREE(data->usb_if.description);
break;
case VIR_NODE_DEV_CAP_NET:
VIR_FREE(data->net.interface);
VIR_FREE(data->net.address);
break;
case VIR_NODE_DEV_CAP_BLOCK:
VIR_FREE(data->block.device);
break;
case VIR_NODE_DEV_CAP_SCSI_HOST:
break;
case VIR_NODE_DEV_CAP_SCSI:
VIR_FREE(data->scsi.type);
break;
case VIR_NODE_DEV_CAP_STORAGE:
VIR_FREE(data->storage.bus);
VIR_FREE(data->storage.drive_type);
VIR_FREE(data->storage.model);
VIR_FREE(data->storage.vendor);
break;
case VIR_NODE_DEV_CAP_LAST:
/* This case is here to shutup the compiler */
break;
}
VIR_FREE(caps);
}

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src/node_device_conf.h Normal file
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@ -0,0 +1,195 @@
/*
* node_device_conf.h: config handling for node devices
*
* 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_CONF_H__
#define __VIR_NODE_DEVICE_CONF_H__
#include "internal.h"
#include "util.h"
enum virNodeDevCapType {
/* Keep in sync with VIR_ENUM_IMPL in node_device_conf.c */
VIR_NODE_DEV_CAP_SYSTEM, /* System capability */
VIR_NODE_DEV_CAP_PCI_DEV, /* PCI device */
VIR_NODE_DEV_CAP_USB_DEV, /* USB device */
VIR_NODE_DEV_CAP_USB_INTERFACE, /* USB interface */
VIR_NODE_DEV_CAP_NET, /* Network device */
VIR_NODE_DEV_CAP_BLOCK, /* Block device */
VIR_NODE_DEV_CAP_SCSI_HOST, /* SCSI Host Bus Adapter */
VIR_NODE_DEV_CAP_SCSI, /* SCSI device */
VIR_NODE_DEV_CAP_STORAGE, /* Storage device */
VIR_NODE_DEV_CAP_LAST
};
enum virNodeDevNetCapType {
/* Keep in sync with VIR_ENUM_IMPL in node_device_conf.c */
VIR_NODE_DEV_CAP_NET_80203, /* 802.03 network device */
VIR_NODE_DEV_CAP_NET_80211, /* 802.11 network device */
VIR_NODE_DEV_CAP_NET_LAST
};
VIR_ENUM_DECL(virNodeDevCap);
VIR_ENUM_DECL(virNodeDevNetCap);
enum virNodeDevStorageCapFlags {
VIR_NODE_DEV_CAP_STORAGE_REMOVABLE = (1 << 0),
VIR_NODE_DEV_CAP_STORAGE_REMOVABLE_MEDIA_AVAILABLE = (1 << 1),
VIR_NODE_DEV_CAP_STORAGE_HOTPLUGGABLE = (1 << 2),
};
typedef struct _virNodeDevCapsDef virNodeDevCapsDef;
typedef virNodeDevCapsDef *virNodeDevCapsDefPtr;
struct _virNodeDevCapsDef {
enum virNodeDevCapType type;
union _virNodeDevCapData {
struct {
char *product_name;
struct {
char *vendor_name;
char *version;
char *serial;
unsigned char uuid[VIR_UUID_BUFLEN];
} hardware;
struct {
char *vendor_name;
char *version;
char *release_date;
} firmware;
} system;
struct {
unsigned domain;
unsigned bus;
unsigned slot;
unsigned function;
unsigned product;
unsigned vendor;
char *product_name;
char *vendor_name;
} pci_dev;
struct {
unsigned bus;
unsigned device;
unsigned product;
unsigned vendor;
char *product_name;
char *vendor_name;
} usb_dev;
struct {
unsigned number;
unsigned _class; /* "class" is reserved in C */
unsigned subclass;
unsigned protocol;
char *description;
} usb_if;
struct {
char *address;
char *interface;
enum virNodeDevNetCapType subtype; /* LAST -> no subtype */
} net;
struct {
char *device;
} block;
struct {
unsigned host;
} scsi_host;
struct {
unsigned host;
unsigned bus;
unsigned target;
unsigned lun;
char *type;
} scsi;
struct {
unsigned long long size;
unsigned long long removable_media_size;
char *bus;
char *drive_type;
char *model;
char *vendor;
unsigned flags; /* virNodeDevStorageCapFlags bits */
} storage;
} data;
virNodeDevCapsDefPtr next; /* next capability */
};
typedef struct _virNodeDeviceDef virNodeDeviceDef;
typedef virNodeDeviceDef *virNodeDeviceDefPtr;
struct _virNodeDeviceDef {
char *name; /* device name (unique on node) */
char *parent; /* optional parent device name */
virNodeDevCapsDefPtr caps; /* optional device capabilities */
};
typedef struct _virNodeDeviceObj virNodeDeviceObj;
typedef virNodeDeviceObj *virNodeDeviceObjPtr;
struct _virNodeDeviceObj {
virNodeDeviceDefPtr def; /* device definition */
void *privateData; /* driver-specific private data */
void (*privateFree)(void *data); /* destructor for private data */
};
typedef struct _virNodeDeviceObjList virNodeDeviceObjList;
typedef virNodeDeviceObjList *virNodeDeviceObjListPtr;
struct _virNodeDeviceObjList {
unsigned int count;
virNodeDeviceObjPtr *objs;
};
typedef struct _virDeviceMonitorState virDeviceMonitorState;
typedef virDeviceMonitorState *virDeviceMonitorStatePtr;
struct _virDeviceMonitorState {
virNodeDeviceObjList devs; /* currently-known devices */
void *privateData; /* driver-specific private data */
};
#define virNodeDeviceReportError(conn, code, fmt...) \
virReportErrorHelper(conn, VIR_FROM_NODEDEV, code, __FILE__, \
__FUNCTION__, __LINE__, fmt)
virNodeDeviceObjPtr virNodeDeviceFindByName(const virNodeDeviceObjListPtr devs,
const char *name);
virNodeDeviceObjPtr virNodeDeviceAssignDef(virConnectPtr conn,
virNodeDeviceObjListPtr devs,
const virNodeDeviceDefPtr def);
void virNodeDeviceObjRemove(virNodeDeviceObjListPtr devs,
const virNodeDeviceObjPtr dev);
char *virNodeDeviceDefFormat(virConnectPtr conn,
const virNodeDeviceDefPtr def);
// TODO: virNodeDeviceDefParseString/File/Node for virNodeDeviceCreate
void virNodeDeviceDefFree(virNodeDeviceDefPtr def);
void virNodeDeviceObjFree(virNodeDeviceObjPtr dev);
void virNodeDeviceObjListFree(virNodeDeviceObjListPtr devs);
void virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps);
#endif /* __VIR_NODE_DEVICE_CONF_H__ */