--- /dev/null
+/*
+ * xen_xl.c: Xen XL parsing functions
+ *
+ * Copyright (c) 2015 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ *
+ * 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: Kiarie Kahurani <davidkiarie4@gmail.com>
+ * Author: Jim Fehlig <jfehlig@suse.com>
+ */
+
+#include <config.h>
+
+#include <libxl.h>
+
+#include "virconf.h"
+#include "virerror.h"
+#include "domain_conf.h"
+#include "viralloc.h"
+#include "virstring.h"
+#include "virstoragefile.h"
+#include "xen_xl.h"
+
+#define VIR_FROM_THIS VIR_FROM_NONE
+
+/*
+ * Xen provides a libxl utility library, with several useful functions,
+ * specifically xlu_disk_parse for parsing xl disk config strings.
+ * Although the libxlutil library is installed, until recently the
+ * corresponding header file wasn't. Use the header file if detected during
+ * configure, otherwise provide extern declarations for any functions used.
+ */
+#ifdef HAVE_LIBXLUTIL_H
+# include <libxlutil.h>
+#else
+typedef struct XLU_Config XLU_Config;
+
+extern XLU_Config *xlu_cfg_init(FILE *report,
+ const char *report_filename);
+
+extern void xlu_cfg_destroy(XLU_Config*);
+
+extern int xlu_disk_parse(XLU_Config *cfg,
+ int nspecs,
+ const char *const *specs,
+ libxl_device_disk *disk);
+#endif
+
+static int
+xenParseXLSpice(virConfPtr conf, virDomainDefPtr def)
+{
+ virDomainGraphicsDefPtr graphics = NULL;
+ unsigned long port;
+ char *listenAddr = NULL;
+ int val;
+
+ if (STREQ(def->os.type, "hvm")) {
+ if (xenConfigGetBool(conf, "spice", &val, 0) < 0)
+ return -1;
+
+ if (val) {
+ if (VIR_ALLOC(graphics) < 0)
+ return -1;
+
+ graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_SPICE;
+ if (xenConfigCopyStringOpt(conf, "spicehost", &listenAddr) < 0)
+ goto cleanup;
+ if (listenAddr &&
+ virDomainGraphicsListenSetAddress(graphics, 0, listenAddr,
+ -1, true) < 0) {
+ goto cleanup;
+ }
+ VIR_FREE(listenAddr);
+
+ if (xenConfigGetULong(conf, "spicetls_port", &port, 0) < 0)
+ goto cleanup;
+ graphics->data.spice.tlsPort = (int)port;
+
+ if (xenConfigGetULong(conf, "spiceport", &port, 0) < 0)
+ goto cleanup;
+
+ graphics->data.spice.port = (int)port;
+
+ if (!graphics->data.spice.tlsPort &&
+ !graphics->data.spice.port)
+ graphics->data.spice.autoport = 1;
+
+ if (xenConfigGetBool(conf, "spicedisable_ticketing", &val, 0) < 0)
+ goto cleanup;
+ if (val) {
+ if (xenConfigCopyStringOpt(conf, "spicepasswd",
+ &graphics->data.spice.auth.passwd) < 0)
+ goto cleanup;
+ }
+
+ if (xenConfigGetBool(conf, "spiceagent_mouse",
+ &graphics->data.spice.mousemode, 0) < 0)
+ goto cleanup;
+ if (xenConfigGetBool(conf, "spicedvagent", &val, 0) < 0)
+ goto cleanup;
+ if (val) {
+ if (xenConfigGetBool(conf, "spice_clipboard_sharing",
+ &graphics->data.spice.copypaste,
+ 0) < 0)
+ goto cleanup;
+ }
+
+ if (VIR_ALLOC_N(def->graphics, 1) < 0)
+ goto cleanup;
+ def->graphics[0] = graphics;
+ def->ngraphics = 1;
+ }
+ }
+
+ return 0;
+
+ cleanup:
+ virDomainGraphicsDefFree(graphics);
+ return -1;
+}
+
+/*
+ * For details on xl disk config syntax, see
+ * docs/misc/xl-disk-configuration.txt in the Xen sources. The important
+ * section of text is:
+ *
+ * More formally, the string is a series of comma-separated keyword/value
+ * pairs, flags and positional parameters. Parameters which are not bare
+ * keywords and which do not contain "=" symbols are assigned to the
+ * so-far-unspecified positional parameters, in the order below. The
+ * positional parameters may also be specified explicitly by name.
+ *
+ * Each parameter may be specified at most once, either as a positional
+ * parameter or a named parameter. Default values apply if the parameter
+ * is not specified, or if it is specified with an empty value (whether
+ * positionally or explicitly).
+ *
+ * Whitespace may appear before each parameter and will be ignored.
+ *
+ * The order of the positional parameters mentioned in the quoted text is:
+ *
+ * target,format,vdev,access
+ *
+ * The following options must be specified by key=value:
+ *
+ * devtype=<devtype>
+ * backendtype=<backend-type>
+ *
+ * The following options are currently not supported:
+ *
+ * backend=<domain-name>
+ * script=<script>
+ * direct-io-safe
+ *
+ */
+static int
+xenParseXLDisk(virConfPtr conf, virDomainDefPtr def)
+{
+ int ret = -1;
+ virConfValuePtr list = virConfGetValue(conf, "disk");
+ XLU_Config *xluconf;
+ libxl_device_disk *libxldisk;
+ virDomainDiskDefPtr disk = NULL;
+
+ if (VIR_ALLOC(libxldisk) < 0)
+ return -1;
+
+ if (!(xluconf = xlu_cfg_init(stderr, "command line")))
+ goto cleanup;
+
+ if (list && list->type == VIR_CONF_LIST) {
+ list = list->list;
+ while (list) {
+ const char *disk_spec = list->str;
+
+ if (list->type != VIR_CONF_STRING || list->str == NULL)
+ goto skipdisk;
+
+ libxl_device_disk_init(libxldisk);
+
+ if (xlu_disk_parse(xluconf, 1, &disk_spec, libxldisk))
+ goto fail;
+
+ if (!(disk = virDomainDiskDefNew()))
+ goto fail;
+
+ if (VIR_STRDUP(disk->dst, libxldisk->vdev) < 0)
+ goto fail;
+
+ if (virDomainDiskSetSource(disk, libxldisk->pdev_path) < 0)
+ goto fail;
+
+ disk->src->readonly = !libxldisk->readwrite;
+ disk->removable = libxldisk->removable;
+
+ if (libxldisk->is_cdrom) {
+ if (virDomainDiskSetDriver(disk, "qemu") < 0)
+ goto fail;
+
+ virDomainDiskSetType(disk, VIR_STORAGE_TYPE_FILE);
+ disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
+ if (!disk->src->path || STREQ(disk->src->path, ""))
+ disk->src->format = VIR_STORAGE_FILE_NONE;
+ else
+ disk->src->format = VIR_STORAGE_FILE_RAW;
+ } else {
+ switch (libxldisk->format) {
+ case LIBXL_DISK_FORMAT_QCOW:
+ disk->src->format = VIR_STORAGE_FILE_QCOW;
+ break;
+
+ case LIBXL_DISK_FORMAT_QCOW2:
+ disk->src->format = VIR_STORAGE_FILE_QCOW2;
+ break;
+
+ case LIBXL_DISK_FORMAT_VHD:
+ disk->src->format = VIR_STORAGE_FILE_VHD;
+ break;
+
+ case LIBXL_DISK_FORMAT_RAW:
+ case LIBXL_DISK_FORMAT_UNKNOWN:
+ disk->src->format = VIR_STORAGE_FILE_RAW;
+ break;
+
+ case LIBXL_DISK_FORMAT_EMPTY:
+ break;
+ }
+
+ switch (libxldisk->backend) {
+ case LIBXL_DISK_BACKEND_QDISK:
+ case LIBXL_DISK_BACKEND_UNKNOWN:
+ if (virDomainDiskSetDriver(disk, "qemu") < 0)
+ goto fail;
+ virDomainDiskSetType(disk, VIR_STORAGE_TYPE_FILE);
+ break;
+
+ case LIBXL_DISK_BACKEND_TAP:
+ if (virDomainDiskSetDriver(disk, "tap") < 0)
+ goto fail;
+ virDomainDiskSetType(disk, VIR_STORAGE_TYPE_FILE);
+ break;
+
+ case LIBXL_DISK_BACKEND_PHY:
+ if (virDomainDiskSetDriver(disk, "phy") < 0)
+ goto fail;
+ virDomainDiskSetType(disk, VIR_STORAGE_TYPE_BLOCK);
+ break;
+ }
+ }
+
+ if (STRPREFIX(libxldisk->vdev, "xvd") || !STREQ(def->os.type, "hvm"))
+ disk->bus = VIR_DOMAIN_DISK_BUS_XEN;
+ else if (STRPREFIX(libxldisk->vdev, "sd"))
+ disk->bus = VIR_DOMAIN_DISK_BUS_SCSI;
+ else
+ disk->bus = VIR_DOMAIN_DISK_BUS_IDE;
+
+ if (VIR_APPEND_ELEMENT(def->disks, def->ndisks, disk) < 0)
+ goto fail;
+
+ libxl_device_disk_dispose(libxldisk);
+
+ skipdisk:
+ list = list->next;
+ }
+ }
+ ret = 0;
+
+ cleanup:
+ virDomainDiskDefFree(disk);
+ xlu_cfg_destroy(xluconf);
+ VIR_FREE(libxldisk);
+ return ret;
+
+ fail:
+ libxl_device_disk_dispose(libxldisk);
+ goto cleanup;
+}
+
+
+virDomainDefPtr
+xenParseXL(virConfPtr conf, virCapsPtr caps, int xendConfigVersion)
+{
+ virDomainDefPtr def = NULL;
+
+ if (VIR_ALLOC(def) < 0)
+ return NULL;
+
+ def->virtType = VIR_DOMAIN_VIRT_XEN;
+ def->id = -1;
+
+ if (xenParseConfigCommon(conf, def, caps, xendConfigVersion) < 0)
+ goto cleanup;
+
+ if (xenParseXLDisk(conf, def) < 0)
+ goto cleanup;
+
+ if (xenParseXLSpice(conf, def) < 0)
+ goto cleanup;
+
+ return def;
+
+ cleanup:
+ virDomainDefFree(def);
+ return NULL;
+}
+
+
+static int
+xenFormatXLDisk(virConfValuePtr list, virDomainDiskDefPtr disk)
+{
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+ virConfValuePtr val, tmp;
+ const char *src = virDomainDiskGetSource(disk);
+ int format = virDomainDiskGetFormat(disk);
+ const char *driver = virDomainDiskGetDriver(disk);
+
+ /* target */
+ virBufferAsprintf(&buf, "%s,", src);
+ /* format */
+ switch (format) {
+ case VIR_STORAGE_FILE_RAW:
+ virBufferAddLit(&buf, "raw,");
+ break;
+ case VIR_STORAGE_FILE_VHD:
+ virBufferAddLit(&buf, "xvhd,");
+ break;
+ case VIR_STORAGE_FILE_QCOW:
+ virBufferAddLit(&buf, "qcow,");
+ break;
+ case VIR_STORAGE_FILE_QCOW2:
+ virBufferAddLit(&buf, "qcow2,");
+ break;
+ /* set default */
+ default:
+ virBufferAddLit(&buf, "raw,");
+ }
+
+ /* device */
+ virBufferAdd(&buf, disk->dst, -1);
+
+ virBufferAddLit(&buf, ",");
+
+ if (disk->src->readonly)
+ virBufferAddLit(&buf, "r,");
+ else if (disk->src->shared)
+ virBufferAddLit(&buf, "!,");
+ else
+ virBufferAddLit(&buf, "w,");
+ if (disk->transient) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("transient disks not supported yet"));
+ goto cleanup;
+ }
+
+ if (STREQ_NULLABLE(driver, "qemu"))
+ virBufferAddLit(&buf, "backendtype=qdisk");
+ else if (STREQ_NULLABLE(driver, "tap"))
+ virBufferAddLit(&buf, "backendtype=tap");
+ else if (STREQ_NULLABLE(driver, "phy"))
+ virBufferAddLit(&buf, "backendtype=phy");
+
+ if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
+ virBufferAddLit(&buf, ",devtype=cdrom");
+
+ if (virBufferCheckError(&buf) < 0)
+ goto cleanup;
+
+ if (VIR_ALLOC(val) < 0)
+ goto cleanup;
+
+ val->type = VIR_CONF_STRING;
+ val->str = virBufferContentAndReset(&buf);
+ tmp = list->list;
+ while (tmp && tmp->next)
+ tmp = tmp->next;
+ if (tmp)
+ tmp->next = val;
+ else
+ list->list = val;
+ return 0;
+
+ cleanup:
+ virBufferFreeAndReset(&buf);
+ return -1;
+}
+
+
+static int
+xenFormatXLDomainDisks(virConfPtr conf, virDomainDefPtr def)
+{
+ int ret = -1;
+ virConfValuePtr diskVal;
+ size_t i;
+
+ if (VIR_ALLOC(diskVal) < 0)
+ return -1;
+
+ diskVal->type = VIR_CONF_LIST;
+ diskVal->list = NULL;
+
+ for (i = 0; i < def->ndisks; i++) {
+ if (def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)
+ continue;
+
+ if (xenFormatXLDisk(diskVal, def->disks[i]) < 0)
+ goto cleanup;
+ }
+
+ if (diskVal->list != NULL)
+ if (virConfSetValue(conf, "disk", diskVal) == 0)
+ diskVal = NULL;
+
+ ret = 0;
+
+ cleanup:
+ virConfFreeValue(diskVal);
+ return ret;
+}
+
+
+static int
+xenFormatXLSpice(virConfPtr conf, virDomainDefPtr def)
+{
+ const char *listenAddr = NULL;
+
+ if (STREQ(def->os.type, "hvm")) {
+ if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE) {
+ /* set others to false but may not be necessary */
+ if (xenConfigSetInt(conf, "sdl", 0) < 0)
+ return -1;
+
+ if (xenConfigSetInt(conf, "vnc", 0) < 0)
+ return -1;
+
+ if (xenConfigSetInt(conf, "spice", 1) < 0)
+ return -1;
+
+ if (xenConfigSetInt(conf, "spiceport",
+ def->graphics[0]->data.spice.port) < 0)
+ return -1;
+
+ if (xenConfigSetInt(conf, "spicetls_port",
+ def->graphics[0]->data.spice.tlsPort) < 0)
+ return -1;
+
+ if (def->graphics[0]->data.spice.auth.passwd) {
+ if (xenConfigSetInt(conf, "spicedisable_ticketing", 1) < 0)
+ return -1;
+
+ if (def->graphics[0]->data.spice.auth.passwd &&
+ xenConfigSetString(conf, "spicepasswd",
+ def->graphics[0]->data.spice.auth.passwd) < 0)
+ return -1;
+ }
+
+ listenAddr = virDomainGraphicsListenGetAddress(def->graphics[0], 0);
+ if (listenAddr &&
+ xenConfigSetString(conf, "spicehost", listenAddr) < 0)
+ return -1;
+
+ if (xenConfigSetInt(conf, "spiceagent_mouse",
+ def->graphics[0]->data.spice.mousemode) < 0)
+ return -1;
+
+ if (def->graphics[0]->data.spice.copypaste) {
+ if (xenConfigSetInt(conf, "spicedvagent", 1) < 0)
+ return -1;
+ if (xenConfigSetInt(conf, "spice_clipboard_sharing",
+ def->graphics[0]->data.spice.copypaste) < 0)
+ return -1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+virConfPtr
+xenFormatXL(virDomainDefPtr def, virConnectPtr conn, int xendConfigVersion)
+{
+ virConfPtr conf = NULL;
+
+ if (!(conf = virConfNew()))
+ goto cleanup;
+
+ if (xenFormatConfigCommon(conf, def, conn, xendConfigVersion) < 0)
+ goto cleanup;
+
+ if (xenFormatXLDomainDisks(conf, def) < 0)
+ goto cleanup;
+
+ if (xenFormatXLSpice(conf, def) < 0)
+ goto cleanup;
+
+ return conf;
+
+ cleanup:
+ if (conf)
+ virConfFree(conf);
+ return NULL;
+}
projects / libvirt.git / commitdiff