[Libvir] [PATCH 6/6] Inactive domain support: xm config backend
Daniel P. Berrange
berrange at redhat.com
Wed Nov 15 02:33:26 UTC 2006
This is the main patch. It adds a new 'xm config file' backend driver to
libvirt. This basically just scans /etc/xen for config files, reads them
and turns them into libvirt XML to create domains. Similarly it can accept
libvirt XML and create config files from it.
Some important points
- It can override /etc/xen with LIBVIRT_XM_CONFIG_DIR env variable
- It only re-scans /etc/xen every X seconds & caches parsed config
files in-memory to avoid parsing / I/O overhead
- Automatically generates a UUID if the config file doesn;t have one
- Skips over a blacklist of files from /etc/xen which are known to
not be valid config files to avoid too many error messages
- Filters list of inactive domains to strip out any which are currently
running (acccording to XenD)
- Allows changing of VCPUS, memory & max memory config settings and
writes changes back out to disk
- Can start, create, delete domains from disk
Regards,
Dan.
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
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-------------- next part --------------
Index: src/Makefile.am
===================================================================
RCS file: /data/cvs/libvirt/src/Makefile.am,v
retrieving revision 1.29
diff -c -r1.29 Makefile.am
*** src/Makefile.am 21 Sep 2006 15:24:37 -0000 1.29
--- src/Makefile.am 15 Nov 2006 02:33:59 -0000
***************
*** 27,33 ****
virterror.c \
driver.h \
proxy_internal.c proxy_internal.h \
! conf.c conf.h
bin_PROGRAMS = virsh
--- 27,34 ----
virterror.c \
driver.h \
proxy_internal.c proxy_internal.h \
! conf.c conf.h \
! xm_internal.c xm_internal.h
bin_PROGRAMS = virsh
Index: src/driver.h
===================================================================
RCS file: /data/cvs/libvirt/src/driver.h,v
retrieving revision 1.12
diff -c -r1.12 driver.h
*** src/driver.h 30 Aug 2006 14:21:03 -0000 1.12
--- src/driver.h 15 Nov 2006 02:33:59 -0000
***************
*** 21,27 ****
VIR_DRV_XEN_STORE = 2,
VIR_DRV_XEN_DAEMON = 3,
VIR_DRV_TEST = 4,
! VIR_DRV_XEN_PROXY = 5
} virDrvNo;
--- 21,28 ----
VIR_DRV_XEN_STORE = 2,
VIR_DRV_XEN_DAEMON = 3,
VIR_DRV_TEST = 4,
! VIR_DRV_XEN_PROXY = 5,
! VIR_DRV_XEN_XM = 6
} virDrvNo;
Index: src/internal.h
===================================================================
RCS file: /data/cvs/libvirt/src/internal.h,v
retrieving revision 1.24
diff -c -r1.24 internal.h
*** src/internal.h 21 Sep 2006 15:24:37 -0000 1.24
--- src/internal.h 15 Nov 2006 02:34:00 -0000
***************
*** 84,90 ****
#define VIR_IS_DOMAIN(obj) ((obj) && (obj)->magic==VIR_DOMAIN_MAGIC)
#define VIR_IS_CONNECTED_DOMAIN(obj) (VIR_IS_DOMAIN(obj) && VIR_IS_CONNECT((obj)->conn))
! #define MAX_DRIVERS 5
/*
* Flags for Xen connections
--- 84,90 ----
#define VIR_IS_DOMAIN(obj) ((obj) && (obj)->magic==VIR_DOMAIN_MAGIC)
#define VIR_IS_CONNECTED_DOMAIN(obj) (VIR_IS_DOMAIN(obj) && VIR_IS_CONNECT((obj)->conn))
! #define MAX_DRIVERS 10
/*
* Flags for Xen connections
Index: src/libvirt.c
===================================================================
RCS file: /data/cvs/libvirt/src/libvirt.c,v
retrieving revision 1.48
diff -c -r1.48 libvirt.c
*** src/libvirt.c 8 Nov 2006 13:53:29 -0000 1.48
--- src/libvirt.c 15 Nov 2006 02:34:01 -0000
***************
*** 28,33 ****
--- 28,34 ----
#include "xen_internal.h"
#include "xend_internal.h"
#include "xs_internal.h"
+ #include "xm_internal.h"
#include "proxy_internal.h"
#include "xml.h"
#include "test.h"
***************
*** 76,81 ****
--- 77,83 ----
xenProxyRegister();
xenDaemonRegister();
xenStoreRegister();
+ xenXMRegister();
testRegister();
return(0);
}
Index: src/xm_internal.c
===================================================================
RCS file: src/xm_internal.c
diff -N src/xm_internal.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- src/xm_internal.c 15 Nov 2006 02:57:26 -0000
***************
*** 0 ****
--- 1,1366 ----
+ /*
+ * xm_internal.h: helper routines for dealing with inactive domains
+ *
+ * Copyright (C) 2006
+ *
+ * Daniel Berrange <berrange at redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file COPYING.LIB in the main directory of this
+ * archive for more details.
+ */
+
+ #include <dirent.h>
+ #include <time.h>
+ #include <sys/stat.h>
+
+ #include <unistd.h>
+ #include <stdint.h>
+ #include <xen/dom0_ops.h>
+
+ #include <libxml/parser.h>
+ #include <libxml/tree.h>
+ #include <libxml/xpath.h>
+
+
+ #include "xm_internal.h"
+ #include "xend_internal.h"
+ #include "conf.h"
+ #include "hash.h"
+ #include "internal.h"
+ #include "xml.h"
+
+ typedef struct xenXMConfCache *xenXMConfCachePtr;
+ typedef struct xenXMConfCache {
+ time_t refreshedAt;
+ char filename[PATH_MAX];
+ virConfPtr conf;
+ } xenXMConfCache;
+
+ static char configDir[PATH_MAX];
+ static virHashTablePtr configCache = NULL;
+ static int nconnections = 0;
+ static time_t lastRefresh = 0;
+
+ #define XM_REFRESH_INTERVAL 10
+
+ #define XM_CONFIG_DIR "/etc/xen"
+ #define XM_EXAMPLE_PREFIX "xmexample"
+ #define XEND_CONFIG_FILE "xend-config.sxp"
+ #define XEND_PCI_CONFIG_PREFIX "xend-pci-"
+ #define QEMU_IF_SCRIPT "qemu-ifup"
+
+ static virDriver xenXMDriver = {
+ VIR_DRV_XEN_XM,
+ "XenXM",
+ (DOM0_INTERFACE_VERSION >> 24) * 1000000 +
+ ((DOM0_INTERFACE_VERSION >> 16) & 0xFF) * 1000 +
+ (DOM0_INTERFACE_VERSION & 0xFFFF),
+ NULL, /* init */
+ xenXMOpen, /* open */
+ xenXMClose, /* close */
+ xenXMGetType, /* type */
+ NULL, /* version */
+ NULL, /* nodeGetInfo */
+ NULL, /* listDomains */
+ NULL, /* numOfDomains */
+ NULL, /* domainCreateLinux */
+ NULL, /* domainLookupByID */
+ xenXMDomainLookupByUUID, /* domainLookupByUUID */
+ xenXMDomainLookupByName, /* domainLookupByName */
+ NULL, /* domainSuspend */
+ NULL, /* domainResume */
+ NULL, /* domainShutdown */
+ NULL, /* domainReboot */
+ NULL, /* domainDestroy */
+ NULL, /* domainFree */
+ NULL, /* domainGetName */
+ NULL, /* domainGetID */
+ NULL, /* domainGetUUID */
+ NULL, /* domainGetOSType */
+ xenXMDomainGetMaxMemory, /* domainGetMaxMemory */
+ xenXMDomainSetMaxMemory, /* domainSetMaxMemory */
+ xenXMDomainSetMemory, /* domainMaxMemory */
+ xenXMDomainGetInfo, /* domainGetInfo */
+ NULL, /* domainSave */
+ NULL, /* domainRestore */
+ xenXMDomainSetVcpus, /* domainSetVcpus */
+ NULL, /* domainPinVcpu */
+ NULL, /* domainGetVcpus */
+ xenXMDomainDumpXML, /* domainDumpXML */
+ xenXMListDefinedDomains, /* listDefinedDomains */
+ xenXMNumOfDefinedDomains, /* numOfDefinedDomains */
+ xenXMDomainCreate, /* domainCreate */
+ xenXMDomainDefineXML, /* domainDefineXML */
+ xenXMDomainUndefine, /* domainUndefine */
+ };
+
+ static void
+ xenXMError(virConnectPtr conn, virErrorNumber error, const char *info)
+ {
+ const char *errmsg;
+
+ if (error == VIR_ERR_OK)
+ return;
+
+ errmsg = __virErrorMsg(error, info);
+ __virRaiseError(conn, NULL, VIR_FROM_XEND, error, VIR_ERR_ERROR,
+ errmsg, info, NULL, 0, 0, errmsg, info);
+ }
+
+ void xenXMRegister(void)
+ {
+ char *envConfigDir;
+ virRegisterDriver(&xenXMDriver);
+
+ if ((envConfigDir = getenv("LIBVIRT_XM_CONFIG_DIR")) != NULL) {
+ strncpy(configDir, envConfigDir, PATH_MAX-1);
+ configDir[PATH_MAX-1] = '\0';
+ } else {
+ strcpy(configDir, XM_CONFIG_DIR);
+ }
+ }
+
+
+ /* Remove any configs which were not refreshed recently */
+ static int xenXMConfigReaper(const void *payload, const char *key ATTRIBUTE_UNUSED, const void *data) {
+ time_t now = *(const time_t *)data;
+ xenXMConfCachePtr entry = (xenXMConfCachePtr)payload;
+
+ if (entry->refreshedAt != now)
+ return 1;
+ return 0;
+ }
+
+ /* Convenience method to grab a int from the config file object */
+ static int xenXMConfigGetInt(virConfPtr conf, const char *name, long *value) {
+ virConfValuePtr val;
+ if (!value || !name || !conf)
+ return -1;
+
+ if (!(val = virConfGetValue(conf, name))) {
+ return -1;
+ }
+
+ if (val->type == VIR_CONF_LONG) {
+ *value = val->l;
+ } else if (val->type == VIR_CONF_STRING) {
+ char *ret;
+ if (!val->str)
+ return -1;
+ *value = strtol(val->str, &ret, 10);
+ if (ret == val->str)
+ return -1;
+ } else {
+ return -1;
+ }
+ return 0;
+ }
+
+
+ /* Convenience method to grab a string from the config file object */
+ static int xenXMConfigGetString(virConfPtr conf, const char *name, const char **value) {
+ virConfValuePtr val;
+ if (!value || !name || !conf)
+ return -1;
+ *value = NULL;
+ if (!(val = virConfGetValue(conf, name))) {
+ return -1;
+ }
+ if (val->type != VIR_CONF_STRING)
+ return -1;
+ if (!val->str)
+ return -1;
+ *value = val->str;
+ return 0;
+ }
+
+ /* Convenience method to grab a string UUID from the config file object */
+ static int xenXMConfigGetUUID(virConfPtr conf, const char *name, unsigned char *uuid) {
+ virConfValuePtr val;
+ char *rawuuid = (char *)uuid;
+ if (!uuid || !name || !conf)
+ return -1;
+ if (!(val = virConfGetValue(conf, name))) {
+ return -1;
+ }
+
+ if (val->type != VIR_CONF_STRING)
+ return -1;
+ if (!val->str)
+ return -1;
+
+ if (!virParseUUID(&rawuuid, val->str))
+ return -1;
+
+ return 0;
+ }
+
+ /* Generate a rnadom UUID - used if domain doesn't already
+ have one in its config */
+ static void xenXMConfigGenerateUUID(unsigned char *uuid) {
+ int i;
+ for (i = 0 ; i < 16 ; i++) {
+ uuid[i] = (unsigned char)(1 + (int) (256.0 * (rand() / (RAND_MAX + 1.0))));
+ }
+ }
+
+ /* Ensure that a config object has a valid UUID in it,
+ if it doesn't then (re-)generate one */
+ static int xenXMConfigEnsureUUID(virConfPtr conf) {
+ unsigned char uuid[16];
+
+ /* If there is no uuid...*/
+ if (xenXMConfigGetUUID(conf, "uuid", uuid) < 0) {
+ virConfValuePtr value;
+ char uuidstr[37];
+
+ value = malloc(sizeof(virConfValue));
+ if (!value) {
+ return -1;
+ }
+
+ /* ... then generate one */
+ xenXMConfigGenerateUUID(uuid);
+ snprintf(uuidstr, 37,
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x</uuid>\n",
+ uuid[0], uuid[1], uuid[2], uuid[3],
+ uuid[4], uuid[5], uuid[6], uuid[7],
+ uuid[8], uuid[9], uuid[10], uuid[11],
+ uuid[12], uuid[13], uuid[14], uuid[15]);
+ uuidstr[36] = '\0';
+
+ value->type = VIR_CONF_STRING;
+ value->str = strdup(uuidstr);
+ if (!value->str) {
+ free(value);
+ return -1;
+ }
+
+ /* And stuff the UUID back into the config file */
+ if (virConfSetValue(conf, "uuid", value) < 0)
+ return -1;
+ }
+ return 0;
+ }
+
+ /* Release memory associated with a cached config object */
+ static void xenXMConfigFree(void *payload, const char *key ATTRIBUTE_UNUSED) {
+ xenXMConfCachePtr entry = (xenXMConfCachePtr)payload;
+ virConfFree(entry->conf);
+ free(entry);
+ }
+
+
+ /* This method is called by various methods to scan /etc/xen
+ (or whatever directory was set by LIBVIRT_XM_CONFIG_DIR
+ environment variable) and process any domain configs. It
+ has rate-limited so never rescans more frequently than
+ once every X seconds */
+ static int xenXMConfigCacheRefresh(void) {
+ DIR *dh;
+ struct dirent *ent;
+ time_t now = time(NULL);
+ int ret = -1;
+
+ if (now == ((time_t)-1)) {
+ return -1;
+ }
+
+ /* Rate limit re-scans */
+ if ((now - lastRefresh) < XM_REFRESH_INTERVAL)
+ return 0;
+
+ lastRefresh = now;
+
+ /* Process the files in the config dir */
+ if (!(dh = opendir(configDir))) {
+ return -1;
+ }
+
+ while ((ent = readdir(dh))) {
+ xenXMConfCachePtr entry;
+ struct stat st;
+ int newborn = 0;
+ char path[PATH_MAX];
+
+ /* Skip a bunch of cruft that clearly aren't config files*/
+ /* Like 'dot' files */
+ if (!strncmp(ent->d_name, ".", 1))
+ continue;
+ /* The XenD server config file */
+ if (!strncmp(ent->d_name, XEND_CONFIG_FILE, strlen(XEND_CONFIG_FILE)))
+ continue;
+ /* Random PCI config cruft */
+ if (!strncmp(ent->d_name, XEND_PCI_CONFIG_PREFIX, strlen(XEND_PCI_CONFIG_PREFIX)))
+ continue;
+ /* The example domain configs */
+ if (!strncmp(ent->d_name, XM_EXAMPLE_PREFIX, strlen(XM_EXAMPLE_PREFIX)))
+ continue;
+ /* The QEMUU networking script */
+ if (!strncmp(ent->d_name, QEMU_IF_SCRIPT, strlen(QEMU_IF_SCRIPT)))
+ continue;
+
+ /* Editor backups */
+ if (ent->d_name[0] == '#')
+ continue;
+ if (ent->d_name[strlen(ent->d_name)-1] == '~')
+ continue;
+
+ /* Build the full file path */
+ if ((strlen(XM_CONFIG_DIR) + 1 + strlen(ent->d_name) + 1) > PATH_MAX)
+ continue;
+ strcpy(path, XM_CONFIG_DIR);
+ strcat(path, "/");
+ strcat(path, ent->d_name);
+
+ /* Skip anything which isn't a file (takes care of scripts/ subdir */
+ if ((stat(path, &st) < 0) ||
+ !S_ISREG(st.st_mode)) {
+ continue;
+ }
+
+ /* If we already have a matching entry and it is not
+ modified, then carry on to next one*/
+ if ((entry = virHashLookup(configCache, ent->d_name))) {
+ if (entry->refreshedAt >= st.st_mtime) {
+ entry->refreshedAt = now;
+ continue;
+ }
+ }
+
+ if (entry) { /* Existing entry which needs refresh */
+ virConfFree(entry->conf);
+ entry->conf = NULL;
+ } else { /* Completely new entry */
+ newborn = 1;
+ if (!(entry = malloc(sizeof(xenXMConfCache)))) {
+ goto cleanup;
+ }
+ memcpy(entry->filename, path, PATH_MAX);
+ }
+ entry->refreshedAt = now;
+
+ if (!(entry->conf = virConfReadFile(entry->filename)) ||
+ xenXMConfigEnsureUUID(entry->conf) < 0) {
+ if (!newborn) {
+ virHashRemoveEntry(configCache, ent->d_name, NULL);
+ }
+ free(entry);
+ continue;
+ }
+
+ /* If its a completely new entry, it must be stuck into
+ the cache (refresh'd entries are already registered) */
+ if (newborn) {
+ if (virHashAddEntry(configCache, ent->d_name, entry) < 0) {
+ virConfFree(entry->conf);
+ free(entry);
+ goto cleanup;
+ }
+ }
+ }
+
+ /* Reap all entries which were not changed, by comparing
+ their refresh timestamp - the timestamp should match
+ 'now' if they were refreshed. If timestamp doesn't match
+ then the config is no longer on disk */
+ virHashRemoveSet(configCache, xenXMConfigReaper, xenXMConfigFree, (const void*) &now);
+ ret = 0;
+
+ cleanup:
+ if (dh)
+ closedir(dh);
+
+ return ret;
+ }
+
+
+ /*
+ * Open a 'connection' to the config file directory ;-)
+ * We just create a hash table to store config files in.
+ * We only support a single directory, so repeated calls
+ * to open all end up using the same cache of files
+ */
+ int xenXMOpen(virConnectPtr conn ATTRIBUTE_UNUSED, const char *name, int flags ATTRIBUTE_UNUSED) {
+ if (name &&
+ strcasecmp(name, "xen")) {
+ return -1;
+ }
+
+ if (nconnections == 0) {
+ configCache = virHashCreate(50);
+ if (!configCache)
+ return -1;
+ }
+ nconnections++;
+
+ return 0;
+ }
+
+ /*
+ * Free the config files in the cache if this is the
+ * last connection
+ */
+ int xenXMClose(virConnectPtr conn ATTRIBUTE_UNUSED) {
+ if (!nconnections--) {
+ virHashFree(configCache, xenXMConfigFree);
+ configCache = NULL;
+ }
+ return 0;
+ }
+
+ /*
+ * Our backend type
+ */
+ const char *xenXMGetType(virConnectPtr conn ATTRIBUTE_UNUSED) {
+ return "XenXM";
+ }
+
+ /*
+ * Since these are all offline domains, we only return info about
+ * VCPUs and memory.
+ */
+ int xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
+ xenXMConfCachePtr entry;
+ long vcpus;
+ long mem;
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+
+ if (domain->handle != -1)
+ return (-1);
+
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return (-1);
+
+ memset(info, 0, sizeof(virDomainInfo));
+ if (xenXMConfigGetInt(entry->conf, "memory", &mem) < 0 ||
+ mem < 0)
+ info->memory = 64 * 1024;
+ else
+ info->memory = (unsigned long)mem * 1024;
+ if (xenXMConfigGetInt(entry->conf, "maxmem", &mem) < 0 ||
+ mem < 0)
+ info->maxMem = info->memory;
+ else
+ info->maxMem = (unsigned long)mem * 1024;
+
+ if (xenXMConfigGetInt(entry->conf, "vcpus", &vcpus) < 0 ||
+ vcpus < 0)
+ info->nrVirtCpu = 1;
+ else
+ info->nrVirtCpu = (unsigned short)vcpus;
+ info->state = VIR_DOMAIN_SHUTOFF;
+ info->cpuTime = 0;
+
+ return 0;
+
+ }
+
+ /*
+ * Turn a config record into a lump of XML describing the
+ * domain, suitable for later feeding for virDomainCreateLinux
+ */
+ char *xenXMDomainDumpXML(virDomainPtr domain, int flags ATTRIBUTE_UNUSED) {
+ virBufferPtr buf;
+ xenXMConfCachePtr entry;
+ char *xml;
+ const char *name;
+ unsigned char uuid[16];
+ const char *str;
+ int hvm = 0;
+ long val;
+ virConfValuePtr list;
+
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(NULL);
+ }
+ if (domain->handle != -1)
+ return (NULL);
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return(NULL);
+
+ if (xenXMConfigGetString(entry->conf, "name", &name) < 0)
+ return(NULL);
+ if (xenXMConfigGetUUID(entry->conf, "uuid", uuid) < 0)
+ return(NULL);
+
+ buf = virBufferNew(4096);
+
+ virBufferAdd(buf, "<domain type='xen'>\n", -1);
+ virBufferVSprintf(buf, " <name>%s</name>\n", name);
+ virBufferVSprintf(buf,
+ " <uuid>%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x</uuid>\n",
+ uuid[0], uuid[1], uuid[2], uuid[3],
+ uuid[4], uuid[5], uuid[6], uuid[7],
+ uuid[8], uuid[9], uuid[10], uuid[11],
+ uuid[12], uuid[13], uuid[14], uuid[15]);
+
+ if ((xenXMConfigGetString(entry->conf, "builder", &str) == 0) &&
+ !strcmp(str, "hvm"))
+ hvm = 1;
+
+ if (hvm) {
+ virBufferAdd(buf, " <os>\n", -1);
+ virBufferAdd(buf, " <type>hvm</type>\n", -1);
+ if (xenXMConfigGetString(entry->conf, "kernel", &str) == 0)
+ virBufferVSprintf(buf, " <loader>%s</loader>\n", str);
+ virBufferAdd(buf, " </os>\n", -1);
+ } else {
+
+ if (xenXMConfigGetString(entry->conf, "bootloader", &str) == 0)
+ virBufferVSprintf(buf, " <bootloader>%s</bootloader>\n", str);
+ if (xenXMConfigGetString(entry->conf, "kernel", &str) == 0) {
+ virBufferAdd(buf, " <os>\n", -1);
+ virBufferAdd(buf, " <type>linux</type>\n", -1);
+ virBufferVSprintf(buf, " <kernel>%s</kernel>\n", str);
+ if (xenXMConfigGetString(entry->conf, "ramdisk", &str) == 0)
+ virBufferVSprintf(buf, " <initrd>%s</initrd>\n", str);
+ if (xenXMConfigGetString(entry->conf, "extra", &str) == 0)
+ virBufferVSprintf(buf, " <cmdline>%s</cmdline>\n", str);
+ virBufferAdd(buf, " </os>\n", -1);
+ }
+ }
+
+ if (xenXMConfigGetInt(entry->conf, "memory", &val) < 0)
+ val = 64;
+ virBufferVSprintf(buf, " <memory>%ld</memory>\n", val * 1024);
+
+ if (xenXMConfigGetInt(entry->conf, "vcpus", &val) < 0)
+ val = 1;
+ virBufferVSprintf(buf, " <vcpu>%ld</vcpu>\n", val);
+
+
+
+ if (xenXMConfigGetString(entry->conf, "on_poweroff", &str) < 0)
+ str = "destroy";
+ virBufferVSprintf(buf, " <on_poweroff>%s</on_poweroff>\n", str);
+
+ if (xenXMConfigGetString(entry->conf, "on_reboot", &str) < 0)
+ str = "restart";
+ virBufferVSprintf(buf, " <on_reboot>%s</on_reboot>\n", str);
+
+ if (xenXMConfigGetString(entry->conf, "on_crash", &str) < 0)
+ str = "restart";
+ virBufferVSprintf(buf, " <on_crash>%s</on_crash>\n", str);
+
+
+ if (hvm) {
+ virBufferAdd(buf, " <features>\n", -1);
+ if (xenXMConfigGetInt(entry->conf, "pae", &val) == 0 &&
+ val)
+ virBufferAdd(buf, " <pae/>\n", -1);
+ if (xenXMConfigGetInt(entry->conf, "acpi", &val) == 0 &&
+ val)
+ virBufferAdd(buf, " <acpi/>\n", -1);
+ if (xenXMConfigGetInt(entry->conf, "apic", &val) == 0 &&
+ val)
+ virBufferAdd(buf, " <apic/>\n", -1);
+ virBufferAdd(buf, " </features>\n", -1);
+ }
+
+ virBufferAdd(buf, " <devices>\n", -1);
+
+ list = virConfGetValue(entry->conf, "disk");
+ while (list && list->type == VIR_CONF_LIST) {
+ virConfValuePtr el = list->list;
+ int block = 0;
+ char dev[NAME_MAX];
+ char src[PATH_MAX];
+ char drvName[NAME_MAX] = "";
+ char drvType[NAME_MAX] = "";
+ char *device;
+ char *mode;
+ char *path;
+
+ if ((el== NULL) || (el->type != VIR_CONF_STRING) || (el->str == NULL))
+ goto skipdisk;
+
+ if (!(device = index(el->str, ',')) || device[0] == '\0')
+ goto skipdisk;
+ device++;
+ if (!(mode = index(device, ',')) || mode[0] == '\0')
+ goto skipdisk;
+ mode++;
+
+ if (!(path = index(el->str, ':')) || path[0] == '\0' || path > device)
+ goto skipdisk;
+
+ strncpy(drvName, el->str, (path-el->str));
+ if (!strcmp(drvName, "tap")) {
+ if (!(path = index(el->str+4, ':')) || path[0] == '\0' || path > device)
+ goto skipdisk;
+
+ strncpy(drvType, el->str+4, (path-(el->str+4)));
+ }
+ if ((device-path) > PATH_MAX)
+ goto skipdisk;
+
+ strncpy(src, path+1, (device-(path+1))-1);
+ src[(device-(path+1))-1] = '\0';
+
+ if (!strcmp(drvName, "phy")) {
+ block = 1;
+ }
+
+ if ((mode-device-1) > (NAME_MAX-1)) {
+ goto skipdisk;
+ }
+ strncpy(dev, device, (mode-device-1));
+ dev[(mode-device-1)] = '\0';
+
+ virBufferVSprintf(buf, " <disk type='%s' device='disk'>\n", block ? "block" : "file");
+ if (drvType[0])
+ virBufferVSprintf(buf, " <driver name='%s' type='%s'/>\n", drvName, drvType);
+ else
+ virBufferVSprintf(buf, " <driver name='%s'/>\n", drvName);
+ virBufferVSprintf(buf, " <source %s='%s'/>\n", block ? "dev" : "file", src);
+ virBufferVSprintf(buf, " <target dev='%s'/>\n", dev);
+ if (*mode == 'r')
+ virBufferAdd(buf, " <readonly/>\n", -1);
+ virBufferAdd(buf, " </disk>\n", -1);
+
+ skipdisk:
+ list = list->next;
+ }
+
+ list = virConfGetValue(entry->conf, "vif");
+ while (list && list->type == VIR_CONF_LIST) {
+ virConfValuePtr el = list->list;
+ int type = -1;
+ char script[PATH_MAX];
+ char ip[16];
+ char mac[18];
+ char *key;
+
+ mac[0] = '\0';
+ script[0] = '\0';
+ ip[0] = '\0';
+
+ if ((el== NULL) || (el->type != VIR_CONF_STRING) || (el->str == NULL))
+ goto skipnic;
+
+ key = el->str;
+ while (key) {
+ char *data;
+ char *nextkey = index(key, ',');
+
+ if (!(data = index(key, '=')) || (data[0] == '\0'))
+ goto skipnic;
+ data++;
+
+ if (!strncmp(key, "mac=", 4)) {
+ int len = nextkey ? (nextkey - data) : 17;
+ if (len > 17)
+ len = 17;
+ strncpy(mac, data, len);
+ mac[len] = '\0';
+ } else if (!strncmp(key, "bridge=", 7)) {
+ type = 1;
+ } else if (!strncmp(key, "script=", 7)) {
+ int len = nextkey ? (nextkey - data) : PATH_MAX-1;
+ if (len > (PATH_MAX-1))
+ len = PATH_MAX-1;
+ strncpy(script, data, len);
+ script[len] = '\0';
+ } else if (!strncmp(key, "ip=", 3)) {
+ int len = nextkey ? (nextkey - data) : 15;
+ if (len > 15)
+ len = 15;
+ strncpy(ip, data, len);
+ ip[len] = '\0';
+ }
+
+ while (nextkey && (nextkey[0] == ',' ||
+ nextkey[0] == ' ' ||
+ nextkey[0] == '\t'))
+ nextkey++;
+ key = nextkey;
+ }
+
+ /* XXX Forcing to pretend its a bridge */
+ if (type == -1) {
+ type = 1;
+ }
+
+ virBufferAdd(buf, " <interface type='bridge'>\n", -1);
+ if (mac[0])
+ virBufferVSprintf(buf, " <mac address='%s'/>\n", mac);
+ if (script[0])
+ virBufferVSprintf(buf, " <script path='%s'/>\n", script);
+ if (ip[0])
+ virBufferVSprintf(buf, " <ip address='%s'/>\n", ip);
+ virBufferAdd(buf, " </interface>\n", -1);
+
+ skipnic:
+ list = list->next;
+ }
+
+ if (xenXMConfigGetInt(entry->conf, "vnc", &val) == 0 && val) {
+ long display;
+ long unused = 1;
+ if (xenXMConfigGetInt(entry->conf, "vncunused", &unused) < 0)
+ unused = 1;
+ if (xenXMConfigGetInt(entry->conf, "vncdisplay", &display) < 0)
+ display = 0;
+
+ if (unused) {
+ virBufferAdd(buf, " <graphics type='vnc' port='-1'/>\n", -1);
+ } else {
+ virBufferVSprintf(buf, " <graphics type='vnc' port='%d'/>\n", (5900+display));
+ }
+ }
+ if (xenXMConfigGetInt(entry->conf, "sdl", &val) == 0 && val) {
+ virBufferAdd(buf, " <graphics type='sdl'/>\n", -1);
+ }
+
+ virBufferAdd(buf, " </devices>\n", -1);
+
+ virBufferAdd(buf, "</domain>\n", -1);
+
+ xml = buf->content;
+ buf->content = NULL;
+ virBufferFree(buf);
+ return xml;
+ }
+
+
+ /*
+ * Update amount of memory in the config file
+ */
+ int xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory) {
+ xenXMConfCachePtr entry;
+ virConfValuePtr value;
+
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+ if (domain->conn->flags & VIR_CONNECT_RO)
+ return (-1);
+ if (domain->handle != -1)
+ return (-1);
+
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return (-1);
+
+ if (!(value = malloc(sizeof(virConfValue))))
+ return (-1);
+
+ value->type = VIR_CONF_LONG;
+ value->l = (memory/1024);
+
+ if (virConfSetValue(entry->conf, "memory", value) < 0)
+ return (-1);
+
+ /* If this fails, should we try to undo our changes to the
+ * in-memory representation of the config file. I say not!
+ */
+ if (virConfWriteFile(entry->filename, entry->conf) < 0)
+ return (-1);
+
+ return 0;
+ }
+
+ /*
+ * Update maximum memory limit in config
+ */
+ int xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory) {
+ xenXMConfCachePtr entry;
+ virConfValuePtr value;
+
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+ if (domain->conn->flags & VIR_CONNECT_RO)
+ return (-1);
+ if (domain->handle != -1)
+ return (-1);
+
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return (-1);
+
+ if (!(value = malloc(sizeof(virConfValue))))
+ return (-1);
+
+ value->type = VIR_CONF_LONG;
+ value->l = (memory/1024);
+
+ if (virConfSetValue(entry->conf, "maxmem", value) < 0)
+ return (-1);
+
+ /* If this fails, should we try to undo our changes to the
+ * in-memory representation of the config file. I say not!
+ */
+ if (virConfWriteFile(entry->filename, entry->conf) < 0)
+ return (-1);
+
+ return 0;
+ }
+
+ /*
+ * Get max memory limit from config
+ */
+ unsigned long xenXMDomainGetMaxMemory(virDomainPtr domain) {
+ xenXMConfCachePtr entry;
+ long val;
+
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+ if (domain->handle != -1)
+ return (-1);
+
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return (-1);
+
+ if (xenXMConfigGetInt(entry->conf, "maxmem", &val) < 0 ||
+ val < 0)
+ if (xenXMConfigGetInt(entry->conf, "memory", &val) < 0 ||
+ val < 0)
+ val = 64;
+
+ return val * 1024;
+ }
+
+ /*
+ * Set the VCPU count in config
+ */
+ int xenXMDomainSetVcpus(virDomainPtr domain, unsigned int vcpus) {
+ xenXMConfCachePtr entry;
+ virConfValuePtr value;
+
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+ if (domain->conn->flags & VIR_CONNECT_RO)
+ return (-1);
+ if (domain->handle != -1)
+ return (-1);
+
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return (-1);
+
+ if (!(value = malloc(sizeof(virConfValue))))
+ return (-1);
+
+ value->type = VIR_CONF_LONG;
+ value->l = vcpus;
+
+ if (virConfSetValue(entry->conf, "vcpus", value) < 0)
+ return (-1);
+
+ /* If this fails, should we try to undo our changes to the
+ * in-memory representation of the config file. I say not!
+ */
+ if (virConfWriteFile(entry->filename, entry->conf) < 0)
+ return (-1);
+
+ return 0;
+ }
+
+ /*
+ * Find an inactive domain based on its name
+ */
+ virDomainPtr xenXMDomainLookupByName(virConnectPtr conn, const char *domname) {
+ xenXMConfCachePtr entry;
+ virDomainPtr ret;
+ unsigned char uuid[16];
+ if (!VIR_IS_CONNECT(conn)) {
+ xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ return (NULL);
+ }
+ if (domname == NULL) {
+ xenXMError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
+ return (NULL);
+ }
+
+ if (xenXMConfigCacheRefresh() < 0)
+ return (NULL);
+
+ if (!(entry = virHashLookup(configCache, domname))) {
+ return (NULL);
+ }
+
+
+ if (xenXMConfigGetUUID(entry->conf, "uuid", uuid) < 0) {
+ return (NULL);
+ }
+
+ if (!(ret = virGetDomain(conn, domname, uuid))) {
+ return (NULL);
+ }
+ ret->handle = -1;
+
+ return ret;
+ }
+
+
+ /*
+ * Hash table iterator to search for a domain based on UUID
+ */
+ static int xenXMDomainSearchForUUID(const void *payload, const char *name ATTRIBUTE_UNUSED, const void *data) {
+ unsigned char uuid[16];
+ const unsigned char *wantuuid = (const unsigned char *)data;
+ const xenXMConfCachePtr entry = (const xenXMConfCachePtr)payload;
+
+ if (xenXMConfigGetUUID(entry->conf, "uuid", uuid) < 0) {
+ return 0;
+ }
+
+ if (!memcmp(uuid, wantuuid, 16))
+ return 1;
+
+ return 0;
+ }
+
+ /*
+ * Find an inactive domain based on its UUID
+ */
+ virDomainPtr xenXMDomainLookupByUUID(virConnectPtr conn,
+ const unsigned char *uuid) {
+ xenXMConfCachePtr entry;
+ virDomainPtr ret;
+ const char *domname;
+
+ if (!VIR_IS_CONNECT(conn)) {
+ xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ return (NULL);
+ }
+ if (uuid == NULL) {
+ xenXMError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
+ return (NULL);
+ }
+
+ if (xenXMConfigCacheRefresh() < 0)
+ return (NULL);
+
+ if (!(entry = virHashSearch(configCache, xenXMDomainSearchForUUID, (const void *)uuid))) {
+ return (NULL);
+ }
+
+ if (xenXMConfigGetString(entry->conf, "name", &domname) < 0) {
+ return (NULL);
+ }
+
+ if (!(ret = virGetDomain(conn, domname, uuid))) {
+ return (NULL);
+ }
+
+ return ret;
+ }
+
+
+ /*
+ * Start a domain from an existing defined config file
+ */
+ int xenXMDomainCreate(virDomainPtr domain) {
+ char *xml;
+ char *sexpr;
+ int ret, xendConfigVersion;
+ unsigned char uuid[16];
+
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+
+ if (domain->handle != -1)
+ return (-1);
+ if (domain->conn->flags & VIR_CONNECT_RO)
+ return (-1);
+
+ if (!(xml = xenXMDomainDumpXML(domain, 0)))
+ return (-1);
+
+ if ((xendConfigVersion = xend_get_config_version(domain->conn)) < 0) {
+ xenXMError(domain->conn, VIR_ERR_INTERNAL_ERROR, "cannot determine xend config version");
+ return (-1);
+ }
+ printf("'%s'\n", xml);
+ if (!(sexpr = virDomainParseXMLDesc(xml, NULL, xendConfigVersion))) {
+ free(xml);
+ return (-1);
+ }
+ free(xml);
+ printf("'%s'\n", sexpr);
+ ret = xenDaemonDomainCreateLinux(domain->conn, sexpr);
+ free(sexpr);
+ if (ret != 0) {
+ fprintf(stderr, "Failed to create domain %s\n", domain->name);
+ return (-1);
+ }
+
+ ret = xend_wait_for_devices(domain->conn, domain->name);
+ if (ret != 0) {
+ fprintf(stderr, "Failed to get devices for domain %s\n", domain->name);
+ return (-1);
+ }
+
+ if ((ret = xenDaemonDomainLookupByName_ids(domain->conn, domain->name, uuid)) < 0) {
+ return (-1);
+ }
+ domain->handle = ret;
+
+ ret = xenDaemonDomainResume(domain);
+ if (ret != 0) {
+ fprintf(stderr, "Failed to resume new domain %s\n", domain->name);
+ xenDaemonDomainDestroy(domain);
+ domain->handle = -1;
+ return (-1);
+ }
+
+ return 0;
+ }
+
+ /*
+ * Convenience method to set an int config param
+ * based on an XPath expression
+ */
+ static
+ int xenXMConfigSetIntFromXPath(virConfPtr conf, xmlXPathContextPtr ctxt,
+ const char *setting, const char *xpath,
+ int allowMissing, long scale) {
+ xmlXPathObjectPtr obj;
+ virConfValuePtr value = NULL;
+ long intval;
+ char *strend;
+ int ret = -1;
+
+ obj = xmlXPathEval(BAD_CAST xpath, ctxt);
+ if ((obj == NULL) && allowMissing)
+ return 0;
+
+ if ((obj == NULL) || (obj->type != XPATH_STRING) ||
+ (obj->stringval == NULL) || (obj->stringval[0] == 0))
+ goto error;
+
+ intval = strtol((char *)obj->stringval, &strend, 10);
+ if (strend == (char *)obj->stringval)
+ goto error;
+
+ if (!(value = malloc(sizeof(virConfValue))))
+ goto error;
+
+ value->type = VIR_CONF_LONG;
+ value->next = NULL;
+ if (scale > 0)
+ value->l = intval * scale;
+ else if (scale < 0)
+ value->l = intval / (-1*scale);
+ else
+ value->l = intval;
+
+ if (virConfSetValue(conf, setting, value) < 0)
+ goto error;
+
+ ret = 0;
+
+ error:
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+ return ret;
+ }
+
+ /*
+ * Convenience method to set a string param
+ * based on an XPath expression
+ */
+ static
+ int xenXMConfigSetStringFromXPath(virConfPtr conf, xmlXPathContextPtr ctxt,
+ const char *setting, const char *xpath,
+ int allowMissing) {
+ xmlXPathObjectPtr obj;
+ virConfValuePtr value = NULL;
+ int ret = -1;
+
+ obj = xmlXPathEval(BAD_CAST xpath, ctxt);
+ if ((obj == NULL) && allowMissing)
+ return 0;
+
+ if ((obj == NULL) || (obj->type != XPATH_STRING) ||
+ (obj->stringval == NULL) || (obj->stringval[0] == 0))
+ goto error;
+
+ if (!(value = malloc(sizeof(virConfValue))))
+ goto error;
+
+ value->type = VIR_CONF_STRING;
+ value->next = NULL;
+ if (!(value->str = strdup((char*)obj->stringval)))
+ goto error;
+
+ if (virConfSetValue(conf, setting, value) < 0)
+ goto error;
+
+ ret = 0;
+
+ error:
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+ return ret;
+ }
+
+
+ /*
+ * Create a config file for a domain, based on an XML
+ * document describing its config
+ */
+ virDomainPtr xenXMDomainDefineXML(virConnectPtr conn, const char *xml) {
+ virDomainPtr ret;
+ char filename[PATH_MAX];
+ unsigned char uuid[16];
+ xmlDocPtr doc = NULL;
+ xmlNodePtr node;
+ xmlXPathObjectPtr obj = NULL;
+ xmlXPathContextPtr ctxt = NULL;
+ xmlChar *prop = NULL;
+ virConfPtr conf = NULL;
+ virConfValuePtr value = NULL;
+ xenXMConfCachePtr entry = NULL;
+
+ if (!VIR_IS_CONNECT(conn)) {
+ xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ return (NULL);
+ }
+ if (xml == NULL) {
+ xenXMError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
+ return (NULL);
+ }
+ if (conn->flags & VIR_CONNECT_RO)
+ return (NULL);
+
+ if (xenXMConfigCacheRefresh() < 0)
+ return (NULL);
+
+ doc = xmlReadDoc((const xmlChar *) xml, "domain.xml", NULL,
+ XML_PARSE_NOENT | XML_PARSE_NONET |
+ XML_PARSE_NOERROR | XML_PARSE_NOWARNING);
+ if (doc == NULL) {
+ return (NULL);
+ }
+ node = xmlDocGetRootElement(doc);
+ if ((node == NULL) || (!xmlStrEqual(node->name, BAD_CAST "domain")))
+ goto error;
+
+ prop = xmlGetProp(node, BAD_CAST "type");
+ if (prop != NULL) {
+ if (!xmlStrEqual(prop, BAD_CAST "xen")) {
+ goto error;
+ }
+ xmlFree(prop);
+ prop = NULL;
+ }
+ if (!(ctxt = xmlXPathNewContext(doc)))
+ goto error;
+
+ if (!(conf = virConfNew()))
+ goto error;
+
+ if (xenXMConfigSetStringFromXPath(conf, ctxt, "name", "string(/domain/name)", 0) < 0)
+ goto error;
+
+ if (xenXMConfigSetStringFromXPath(conf, ctxt, "uuid", "string(/domain/uuid)", 0) < 0)
+ goto error;
+
+ if (xenXMConfigSetIntFromXPath(conf, ctxt, "memory", "string(/domain/memory)", 0, -1024) < 0)
+ goto error;
+
+ if (xenXMConfigSetIntFromXPath(conf, ctxt, "vcpus", "string(/domain/vcpu)", 0, 0) < 0)
+ goto error;
+
+ if (xenXMConfigSetIntFromXPath(conf, ctxt, "pae", "string(count(/domain/features/pae))", 0, 0) < 0)
+ goto error;
+
+ if (xenXMConfigSetIntFromXPath(conf, ctxt, "acpi", "string(count(/domain/features/acpi))", 0, 0) < 0)
+ goto error;
+
+ if (xenXMConfigSetIntFromXPath(conf, ctxt, "apic", "string(count(/domain/features/apic))", 0, 0) < 0)
+ goto error;
+
+
+ if (xenXMConfigSetStringFromXPath(conf, ctxt, "on_poweroff", "string(/domain/on_poweroff)", 1) < 0)
+ goto error;
+
+ if (xenXMConfigSetStringFromXPath(conf, ctxt, "on_reboot", "string(/domain/on_reboot)", 1) < 0)
+ goto error;
+
+ if (xenXMConfigSetStringFromXPath(conf, ctxt, "on_crash", "string(/domain/on_crash)", 1) < 0)
+ goto error;
+
+
+ if (!(value = virConfGetValue(conf, "name")) || value->type != VIR_CONF_STRING || value->str == NULL)
+ goto error;
+
+ if (virHashLookup(configCache, value->str) != 0)
+ goto error;
+
+ if ((strlen(configDir) + 1 + strlen(value->str) + 1) > PATH_MAX)
+ goto error;
+
+ strcpy(filename, configDir);
+ strcat(filename, "/");
+ strcat(filename, value->str);
+
+ if (virConfWriteFile(filename, conf) < 0)
+ goto error;
+
+ if (!(entry = malloc(sizeof(xenXMConfCache))))
+ goto error;
+ memset(entry, 0, sizeof(xenXMConfCache));
+
+ if ((entry->refreshedAt = time(NULL)) == ((time_t)-1))
+ goto error;
+
+ memmove(entry->filename, filename, PATH_MAX);
+ entry->conf = conf;
+
+ if (xenXMConfigGetUUID(conf, "uuid", uuid) < 0)
+ goto error;
+
+ printf("Adding entry %s\n", value->str);
+ if (virHashAddEntry(configCache, value->str, entry) < 0)
+ goto error;
+ entry = NULL;
+
+ if (!(ret = virGetDomain(conn, value->str, uuid)))
+ goto error;
+ ret->handle = -1;
+
+ return ret;
+
+ error:
+ if (entry)
+ free(entry);
+ if (conf)
+ virConfFree(conf);
+ if (prop != NULL)
+ xmlFree(prop);
+ if (obj != NULL)
+ xmlXPathFreeObject(obj);
+ if (ctxt != NULL)
+ xmlXPathFreeContext(ctxt);
+ if (doc != NULL)
+ xmlFreeDoc(doc);
+ return NULL;
+ }
+
+ /*
+ * Delete a domain from disk
+ */
+ int xenXMDomainUndefine(virDomainPtr domain) {
+ xenXMConfCachePtr entry;
+ if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
+ xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
+ __FUNCTION__);
+ return(-1);
+ }
+
+ if (domain->handle != -1)
+ return (-1);
+ if (domain->conn->flags & VIR_CONNECT_RO)
+ return (-1);
+
+ if (!(entry = virHashLookup(configCache, domain->name)))
+ return (-1);
+
+ if (unlink(entry->filename) < 0)
+ return (-1);
+
+ if (virHashRemoveEntry(configCache, domain->name, xenXMConfigFree) < 0)
+ return (-1);
+
+ return 0;
+ }
+
+ struct xenXMListIteratorContext {
+ virConnectPtr conn;
+ int max;
+ int count;
+ const char **names;
+ };
+
+ static void xenXMListIterator(const void *payload ATTRIBUTE_UNUSED, const char *name, const void *data) {
+ struct xenXMListIteratorContext *ctx = (struct xenXMListIteratorContext *)data;
+ virDomainPtr dom = NULL;
+
+ if (ctx->count == ctx->max)
+ return;
+
+ dom = xenDaemonDomainLookupByName(ctx->conn, name);
+ if (!dom) {
+ ctx->names[ctx->count] = strdup(name);
+ ctx->count++;
+ } else {
+ virDomainFree(dom);
+ }
+ }
+
+
+ /*
+ * List all defined domains, filtered to remove any which
+ * are currently running
+ */
+ int xenXMListDefinedDomains(virConnectPtr conn, const char **names, int maxnames) {
+ struct xenXMListIteratorContext ctx;
+
+ if (!VIR_IS_CONNECT(conn)) {
+ xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ return (-1);
+ }
+
+ if (xenXMConfigCacheRefresh() < 0)
+ return -1;
+
+ if (maxnames > virHashSize(configCache))
+ maxnames = virHashSize(configCache);
+
+ ctx.conn = conn;
+ ctx.count = 0;
+ ctx.max = maxnames;
+ ctx.names = names;
+
+ virHashForEach(configCache, xenXMListIterator, &ctx);
+ return ctx.count;
+ }
+
+ /*
+ * Return the maximum number of defined domains - not filtered
+ * based on number running
+ */
+ int xenXMNumOfDefinedDomains(virConnectPtr conn) {
+ if (!VIR_IS_CONNECT(conn)) {
+ xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ return (-1);
+ }
+
+ if (xenXMConfigCacheRefresh() < 0)
+ return -1;
+
+ return virHashSize(configCache);
+ }
+
+ /*
+ * Local variables:
+ * indent-tabs-mode: nil
+ * c-indent-level: 4
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ */
Index: src/xm_internal.h
===================================================================
RCS file: src/xm_internal.h
diff -N src/xm_internal.h
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- src/xm_internal.h 15 Nov 2006 02:57:26 -0000
***************
*** 0 ****
--- 1,47 ----
+ /*
+ * xm_internal.h: helper routines for dealing with inactive domains
+ *
+ * Copyright (C) 2006
+ *
+ * Daniel Berrange <berrange at redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file COPYING.LIB in the main directory of this
+ * archive for more details.
+ */
+
+ #ifndef _LIBVIRT_XM_INTERNAL_H_
+ #define _LIBVIRT_XM_INTERNAL_H_
+
+ #include "libvirt/libvirt.h"
+
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+
+ void xenXMRegister(void);
+ int xenXMOpen(virConnectPtr conn, const char *name, int flags);
+ int xenXMClose(virConnectPtr conn);
+ const char *xenXMGetType(virConnectPtr conn);
+ int xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info);
+ char *xenXMDomainDumpXML(virDomainPtr domain, int flags);
+ int xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory);
+ int xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory);
+ unsigned long xenXMDomainGetMaxMemory(virDomainPtr domain);
+ int xenXMDomainSetVcpus(virDomainPtr domain, unsigned int vcpus);
+ virDomainPtr xenXMDomainLookupByName(virConnectPtr conn, const char *domname);
+ virDomainPtr xenXMDomainLookupByUUID(virConnectPtr conn,
+ const unsigned char *uuid);
+
+ int xenXMListDefinedDomains(virConnectPtr conn, const char **names, int maxnames);
+ int xenXMNumOfDefinedDomains(virConnectPtr conn);
+
+ int xenXMDomainCreate(virDomainPtr domain);
+ virDomainPtr xenXMDomainDefineXML(virConnectPtr con, const char *xml);
+ int xenXMDomainUndefine(virDomainPtr domain);
+
+
+ #ifdef __cplusplus
+ }
+ #endif
+ #endif
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