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* configure.in src/Makefile.am src/driver.h src/libvirt.c:

Browse Source 
applied patch from Shuveb Hussain to plug the developping
  OpenVZ support. Disabled by default.
* src/openvz_conf.[ch] src/openvz_driver.[ch]: added new
  OpenVZ driver files. Avoid a redefinition of readline().
Daniel
This commit is contained in:
Daniel Veillard 2007-07-17 13:27:26 +00:00
parent d9adc2eaf1
commit b55718444f
9 changed files with 1182 additions and 2 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
Tue Jul 17 15:24:27 CEST 2007 Daniel Veillard <veillard@redhat.com>
* configure.in src/Makefile.am src/driver.h src/libvirt.c:
applied patch from Shuveb Hussain to plug the developping
OpenVZ support. Disabled by default.
* src/openvz_conf.[ch] src/openvz_driver.[ch]: added new
OpenVZ driver files. Avoid a redefinition of readline().
Mon Jul 16 17:36:24 EST 2007 Daniel P. Berrange <berrange@redhat.com>
* docs/libvir.html, docs/remote.html: Re-write notes on IPV6

8
configure.in
View File

@ -75,6 +75,8 @@ AC_ARG_WITH(xen,
[ --with-xen add XEN support (on)])
AC_ARG_WITH(qemu,
[ --with-qemu add QEMU/KVM support (on)])
AC_ARG_WITH(openvz,
[ --with-openvz add OpenVZ support (off)])
AC_ARG_WITH(test,
[ --with-test add test driver support (on)])
AC_ARG_WITH(remote,
@ -173,6 +175,12 @@ AC_ARG_WITH(depends,
LIBVIRT_FEATURES=
WITH_XEN=0
if test "$with_openvz" = "yes" ; then
echo "Enabling OpenVZ support"
LIBVIRT_FEATURES="$LIBVIRT_FEATURES -DWITH_OPENVZ"
else
echo "Disabling OpenVZ support"
fi
if test "$with_qemu" = "no" ; then
echo "Disabling QEMU/KVM support"
else

4
src/Makefile.am
View File

@ -47,7 +47,9 @@ CLIENT_SOURCES = \
iptables.c iptables.h \
uuid.c uuid.h \
qemu_driver.c qemu_driver.h \
qemu_conf.c qemu_conf.h
qemu_conf.c qemu_conf.h \
openvz_conf.c openvz_conf.h \
openvz_driver.c openvz_driver.h
SERVER_SOURCES = \
../qemud/protocol.h ../qemud/protocol.c \

1
src/driver.h
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@ -21,6 +21,7 @@ typedef enum {
VIR_DRV_TEST = 2,
VIR_DRV_QEMU = 3,
VIR_DRV_REMOTE = 4,
VIR_DRV_OPENVZ = 5,
} virDrvNo;

5
src/libvirt.c
View File

@ -85,12 +85,15 @@ virInitialize(void)
#ifdef WITH_TEST
if (testRegister() == -1) return -1;
#endif
#ifdef WITH_QEMU
#ifdef WITH_QEMU
if (qemudRegister() == -1) return -1;
#endif
#ifdef WITH_XEN
if (xenUnifiedRegister () == -1) return -1;
#endif
#ifdef WITH_OPENVZ
if (openvzRegister() == -1) return -1;
#endif
#ifdef WITH_REMOTE
if (remoteRegister () == -1) return -1;
#endif

491
src/openvz_conf.c Normal file
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@ -0,0 +1,491 @@
/*
* openvz_conf.c: config functions for managing OpenVZ VEs
*
* Copyright (C) 2006, 2007 Binary Karma
* Copyright (C) 2006 Shuveb Hussain
*
* 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: Shuveb Hussain <shuveb@binarykarma.com>
*/
#ifdef WITH_OPENVZ
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <dirent.h>
#include <strings.h>
#include <time.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#include <libxml/uri.h>
#include <libvirt/virterror.h>
#include "openvz_conf.h"
#include "openvz_driver.h"
#include "uuid.h"
#include "buf.h"
/* For errors internal to this library. */
static void
error (virConnectPtr conn, virErrorNumber code, const char *info)
{
const char *errmsg;
errmsg = __virErrorMsg (code, info);
__virRaiseError (conn, NULL, NULL, VIR_FROM_REMOTE,
code, VIR_ERR_ERROR, errmsg, info, NULL, 0, 0,
errmsg, info);
}
struct openvz_vm *openvzFindVMByID(const struct openvz_driver *driver, int id) {
struct openvz_vm *vm = driver->vms;
while (vm) {
if (vm->vpsid == id)
return vm;
vm = vm->next;
}
return NULL;
}
struct openvz_vm *openvzFindVMByUUID(const struct openvz_driver *driver,
const unsigned char *uuid) {
struct openvz_vm *vm = driver->vms;
while (vm) {
if (!memcmp(vm->vmdef->uuid, uuid, OPENVZ_UUID_MAX))
return vm;
vm = vm->next;
}
return NULL;
}
struct openvz_vm *openvzFindVMByName(const struct openvz_driver *driver,
const char *name) {
struct openvz_vm *vm = driver->vms;
while (vm) {
if (!strcmp(vm->vmdef->name, name))
return vm;
vm = vm->next;
}
return NULL;
}
/* Free all memory associated with a struct openvz_vm object */
void openvzFreeVMDef(struct openvz_vm_def *def) {
struct ovz_quota *quota = def->fs.quota;
struct ovz_ip *ip = def->net.ips;
struct ovz_ns *ns = def->net.ns;
while (quota) {
struct ovz_quota *prev = quota;
quota = quota->next;
free(prev);
}
while (ip) {
struct ovz_ip *prev = ip;
ip = ip->next;
free(prev);
}
while (ns) {
struct ovz_ns *prev = ns;
ns = ns->next;
free(prev);
}
free(def);
}
/*
* Parses a libvirt XML definition of a guest, and populates the
* the openvz_vm struct with matching data about the guests config
*/
static struct openvz_vm_def *openvzParseXML(virConnectPtr conn,
xmlDocPtr xml) {
xmlNodePtr root = NULL;
xmlChar *prop = NULL;
xmlXPathContextPtr ctxt = NULL;
xmlXPathObjectPtr obj = NULL;
struct openvz_vm_def *def;
if (!(def = calloc(1, sizeof(struct openvz_vm_def)))) {
error(conn, VIR_ERR_NO_MEMORY, "xmlXPathContext");
return NULL;
}
/* Prepare parser / xpath context */
root = xmlDocGetRootElement(xml);
if ((root == NULL) || (!xmlStrEqual(root->name, BAD_CAST "domain"))) {
error(conn, VIR_ERR_INTERNAL_ERROR, "incorrect root element");
goto bail_out;
}
ctxt = xmlXPathNewContext(xml);
if (ctxt == NULL) {
error(conn, VIR_ERR_NO_MEMORY, "xmlXPathContext");
goto bail_out;
}
/* Find out what type of QEMU virtualization to use */
if (!(prop = xmlGetProp(root, BAD_CAST "type"))) {
error(conn, VIR_ERR_INTERNAL_ERROR, "missing domain type attribute");
goto bail_out;
}
if (strcmp((char *)prop, "openvz")){
error(conn, VIR_ERR_INTERNAL_ERROR, "invalid domain type attribute");
goto bail_out;
}
free(prop);
prop = NULL;
/* Extract domain name */
obj = xmlXPathEval(BAD_CAST "string(/domain/name[1])", ctxt);
if ((obj == NULL) || (obj->type != XPATH_NUMBER) ||
(obj->stringval == NULL) || (obj->stringval[0] == 0)) {
error(conn, VIR_ERR_INTERNAL_ERROR,"invalid domain name");
goto bail_out;
}
if (0/* check if VPS ID is < 101 */) {
error(conn, VIR_ERR_INTERNAL_ERROR, "VPS ID is less than 101");
goto bail_out;
}
strcpy(def->name, (const char *)obj->stringval);
xmlXPathFreeObject(obj);
/* Extract domain uuid */
obj = xmlXPathEval(BAD_CAST "string(/domain/uuid[1])", ctxt);
if ((obj == NULL) || (obj->type != XPATH_STRING) ||
(obj->stringval == NULL) || (obj->stringval[0] == 0)) {
int err;
if ((err = virUUIDGenerate(def->uuid))) {
error(conn, VIR_ERR_INTERNAL_ERROR,
"Failed to generate UUID");
goto bail_out;
}
} else if (virUUIDParse((const char *)obj->stringval, def->uuid) < 0) {
error(conn, VIR_ERR_INTERNAL_ERROR, "malformed uuid element");
goto bail_out;
}
xmlXPathFreeObject(obj);
/* Extract filesystem info */
obj = xmlXPathEval(BAD_CAST "string(/domain/filesystem/template[1])", ctxt);
if ((obj == NULL) || (obj->type != XPATH_STRING) ||
(obj->stringval == NULL) || (obj->stringval[0] == 0)) {
error(conn, VIR_ERR_OS_TYPE, NULL);
goto bail_out;
}
strcpy(def->fs.tmpl, (const char *)obj->stringval);
xmlXPathFreeObject(obj);
/* TODO Add quota processing here */
/* TODO analysis of the network devices */
xmlXPathFreeContext(ctxt);
return def;
bail_out:
if (prop)
free(prop);
if (obj)
xmlXPathFreeObject(obj);
if (ctxt)
xmlXPathFreeContext(ctxt);
openvzFreeVMDef(def);
return NULL;
}
struct openvz_vm_def *
openvzParseVMDef(virConnectPtr conn,
const char *xmlStr,
const char *displayName) {
xmlDocPtr xml;
struct openvz_vm_def *def = NULL;
if (!(xml = xmlReadDoc(BAD_CAST xmlStr, displayName ? displayName : "domain.xml", NULL,
XML_PARSE_NOENT | XML_PARSE_NONET |
XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
error(conn, VIR_ERR_XML_ERROR, NULL);
return NULL;
}
def = openvzParseXML(conn, xml);
xmlFreeDoc(xml);
return def;
}
struct openvz_vm *
openvzGetVPSInfo(virConnectPtr conn) {
FILE *fp;
int veid, ret;
char status[16];
char uuidstr[(VIR_UUID_BUFLEN * 2) + 1];
struct openvz_vm *vm;
struct openvz_vm **pnext;
struct openvz_driver *driver;
struct openvz_vm_def *vmdef;
vm = NULL;
driver = conn->privateData;
driver->num_active = 0;
driver->num_inactive = 0;
if((fp = popen(VZLIST " -a -ovpsid,status -H 2>/dev/null", "r")) == NULL) {
error(conn, VIR_ERR_INTERNAL_ERROR, "popen failed");
return NULL;
}
pnext = &vm;
while(!feof(fp)) {
*pnext = malloc(sizeof(struct openvz_vm));
if(!*pnext) {
error(conn, VIR_ERR_INTERNAL_ERROR, "malloc failed");
return NULL;
}
if(!vm)
vm = *pnext;
fscanf(fp, "%d %s\n", &veid, status);
if(strcmp(status, "stopped")) {
(*pnext)->status = VIR_DOMAIN_RUNNING;
driver->num_active ++;
(*pnext)->vpsid = veid;
}
else {
(*pnext)->status = VIR_DOMAIN_SHUTOFF;
driver->num_inactive ++;
(*pnext)->vpsid = -1; /* inactive domains don't have their ID set in libvirt,
thought this doesn't make sense for OpenVZ */
}
vmdef = malloc(sizeof(struct openvz_vm_def));
if(!vmdef) {
error(conn, VIR_ERR_INTERNAL_ERROR, "malloc failed");
return NULL;
}
snprintf(vmdef->name, OPENVZ_NAME_MAX, "%i", veid);
openvzGetVPSUUID(veid, uuidstr);
ret = sscanf(uuidstr, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
(unsigned int *)&vmdef->uuid[0], (unsigned int *)&vmdef->uuid[1], (unsigned int *)&vmdef->uuid[2],
(unsigned int *)&vmdef->uuid[3], (unsigned int *)&vmdef->uuid[4], (unsigned int *)&vmdef->uuid[5],
(unsigned int *)&vmdef->uuid[6], (unsigned int *)&vmdef->uuid[7], (unsigned int *)&vmdef->uuid[8],
(unsigned int *)&vmdef->uuid[9], (unsigned int *)&vmdef->uuid[10], (unsigned int *)&vmdef->uuid[11],
(unsigned int *)&vmdef->uuid[12], (unsigned int *)&vmdef->uuid[13], (unsigned int *)&vmdef->uuid[14],
(unsigned int *)&vmdef->uuid[15]);
if(ret != 16) {
error(conn, VIR_ERR_INTERNAL_ERROR, "UUID in config file malformed");
return NULL;
}
(*pnext)->vmdef = vmdef;
pnext = &(*pnext)->next;
}
return vm;
}
char *openvzLocateConfDir(void)
{
const char *conf_dir_list[] = {"/etc/vz/conf", "/usr/local/etc/conf", NULL};
int i=0;
while(conf_dir_list[i]) {
if(!access(conf_dir_list[i], F_OK))
return strdup(conf_dir_list[i]);
i ++;
}
return NULL;
}
/* Richard Steven's classic readline() function */
int openvz_readline(int fd, char *ptr, int maxlen)
{
int n, rc;
char c;
for(n = 1; n < maxlen; n ++) {
if( (rc = read(fd, &c, 1)) == 1) {
*ptr++ = c;
if(c == '\n')
break;
}
else if(rc == 0) {
if(n == 1)
return 0; /* EOF condition */
else
break;
}
else
return -1; /* error */
}
*ptr = 0;
return n;
}
void openvzGenerateUUID(unsigned char *uuid)
{
unsigned int i;
int fd;
/* seed rand() with kernel entrophy */
fd = open("/dev/urandom", O_RDONLY);
if(fd != -1) {
read(fd, &i, sizeof(int));
srand(i);
close(fd);
}
else {
srand((int) time(NULL));
}
for (i = 0 ; i < VIR_UUID_BUFLEN ; i++) {
uuid[i] = (unsigned char)(1 + (int) (256.0 * (rand() / (RAND_MAX + 1.0))));
}
}
int openvzGetVPSUUID(int vpsid, char *uuidbuf)
{
char conf_file[PATH_MAX];
char line[1024];
char uuid[1024];
char iden[1024];
char *conf_dir;
int fd, ret;
conf_dir = openvzLocateConfDir();
sprintf(conf_file, "%s/%d.conf", conf_dir, vpsid);
free(conf_dir);
fd = open(conf_file, O_RDWR);
if(fd == -1)
return -1;
while(1) {
ret = openvz_readline(fd, line, sizeof(line));
if(ret == -1)
return -1;
if(ret == 0) { /* EoF, UUID was not found */
uuidbuf[0] = (char)NULL;
break;
}
sscanf(line, "%s %s\n", iden, uuid);
if(!strcmp(iden, "#UUID:")) {
strncpy(uuidbuf, uuid, (VIR_UUID_BUFLEN * 2) +1);
break;
}
}
return 0;
}
/* Do actual checking for UUID presence in conf file,
* assign if not present.
*/
int openvzSetUUID(int vpsid)
{
char conf_file[PATH_MAX];
char uuid[(VIR_UUID_BUFLEN * 2) + 1];
unsigned char new_uuid[VIR_UUID_BUFLEN];
char *conf_dir;
int fd, ret, i;
conf_dir = openvzLocateConfDir();
sprintf(conf_file, "%s/%d.conf", conf_dir, vpsid);
free(conf_dir);
fd = open(conf_file, O_RDWR);
if(fd == -1)
return -1;
ret = openvzGetVPSUUID(vpsid, uuid);
if(ret == -1)
return -1;
if(uuid[0] == (int)NULL) {
openvzGenerateUUID(new_uuid);
bzero(uuid, (VIR_UUID_BUFLEN * 2) + 1);
for(i = 0; i < VIR_UUID_BUFLEN; i ++)
sprintf(uuid + (i * 2), "%02x", (unsigned char)new_uuid[i]);
lseek(fd, 0, SEEK_END);
write(fd, "\n#UUID: ", 8);
write(fd, uuid, strlen(uuid));
write(fd, "\n", 1);
close(fd);
}
return 0;
}
/*
* Scan VPS config files and see if they have a UUID.
* If not, assign one. Just append one to the config
* file as comment so that the OpenVZ tools ignore it.
*
*/
int openvzAssignUUIDs(void)
{
DIR *dp;
struct dirent *dent;
char *conf_dir;
int vpsid, res;
char ext[8];
conf_dir = openvzLocateConfDir();
dp = opendir(conf_dir);
if(dp == NULL) {
free(conf_dir);
return 0;
}
while((dent = readdir(dp))) {
res = sscanf(dent->d_name, "%d.%5s", &vpsid, ext);
if(!(res == 2 && !strcmp(ext, "conf")))
continue;
if(vpsid > 0) /* '0.conf' belongs to the host, ignore it */
openvzSetUUID(vpsid);
}
closedir(dp);
free(conf_dir);
return 0;
}
#endif

114
src/openvz_conf.h Normal file
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@ -0,0 +1,114 @@
/*
* openvz_config.h: config information for OpenVZ VPSs
*
* Copyright (C) 2006, 2007 Binary Karma.
* Copyright (C) 2006 Shuveb Hussain
*
* 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: Shuveb Hussain <shuveb@binarykarma.com>
*/
#ifndef OPENVZ_CONF_H
#define OPENVZ_CONF_H
#include "openvz_driver.h"
#define OPENVZ_NAME_MAX 8
#define OPENVZ_UUID_MAX 16
#define OPENVZ_TMPL_MAX 256
#define OPENVZ_UNAME_MAX 32
#define OPENVZ_IP_MAX 16
#define OPENVZ_HOSTNAME_MAX 256
#define OPENVZ_PROFILE_MAX 256
enum openvz_quota{
VM_LEVEL = 0,
USER_LEVEL = 1,
};
/* TODO Add more properties here */
struct vps_props {
int kmemsize; /* currently held */
int kmemsize_m; /* max held */
int kmemsize_b; /* barrier */
int kmemsize_l; /* limit */
int kmemsize_f; /* fail count */
};
struct openvz_fs_def {
char tmpl[OPENVZ_TMPL_MAX];
struct ovz_quota *quota;
};
struct ovz_ip {
char ip[OPENVZ_IP_MAX];
char netmask[OPENVZ_IP_MAX];
struct ovz_ip *next;
};
struct ovz_ns {
char ip[OPENVZ_IP_MAX];
struct ovz_ns *next;
};
struct openvz_net_def {
char hostname[OPENVZ_HOSTNAME_MAX];
char def_gw[OPENVZ_IP_MAX];
struct ovz_ip *ips;
struct ovz_ns *ns;
};
struct openvz_vm_def {
char name[OPENVZ_NAME_MAX];
unsigned char uuid[OPENVZ_UUID_MAX];
char profile[OPENVZ_PROFILE_MAX];
struct openvz_fs_def fs;
struct openvz_net_def net;
};
struct ovz_quota {
enum openvz_quota type;
unsigned int size;
char uname[OPENVZ_UNAME_MAX];
struct ovz_quota *next;
};
struct openvz_vm {
int vpsid;
int status;
struct openvz_vm_def *vmdef;
struct openvz_vm *next;
};
char *openvzLocateConfDir(void);
int readline(int fd, char *ptr, int maxlen);
static void error (virConnectPtr conn, virErrorNumber code, const char *info);
struct openvz_vm *openvzFindVMByID(const struct openvz_driver *driver, int id);
struct openvz_vm *openvzFindVMByUUID(const struct openvz_driver *driver,
const unsigned char *uuid);
struct openvz_vm *openvzFindVMByName(const struct openvz_driver *driver,
const char *name);
void openvzFreeVMDef(struct openvz_vm_def *def);
static struct openvz_vm_def *openvzParseXML(virConnectPtr conn, xmlDocPtr xml);
struct openvz_vm_def *openvzParseVMDef(virConnectPtr conn, const char *xmlStr,
const char *displayName);
struct openvz_vm *openvzGetVPSInfo(virConnectPtr conn);
void openvzGenerateUUID(unsigned char *uuid);
int openvzGetVPSUUID(int vpsid, char *uuidbuf);
int openvzSetUUID(int vpsid);
int openvzAssignUUIDs(void);
#endif /* OPENVZ_CONF_H */

501
src/openvz_driver.c Normal file
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@ -0,0 +1,501 @@
/*
* openvz_driver.c: core driver methods for managing OpenVZ VEs
*
* Copyright (C) 2006, 2007 Binary Karma
* Copyright (C) 2006 Shuveb Hussain
*
* 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: Shuveb Hussain <shuveb@binarykarma.com>
*/
#ifdef WITH_OPENVZ
#include <config.h>
#define _GNU_SOURCE /* for asprintf */
#include <sys/types.h>
#include <sys/poll.h>
#include <dirent.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <strings.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <paths.h>
#include <ctype.h>
#include <pwd.h>
#include <stdio.h>
#include <sys/wait.h>
#include <libvirt/virterror.h>
#include "event.h"
#include "buf.h"
#include "openvz_driver.h"
#include "openvz_conf.h"
#define openvzLog(level, msg...) fprintf(stderr, msg)
static virDomainPtr openvzDomainLookupByID(virConnectPtr conn, int id);
static char *openvzGetOSType(virDomainPtr dom);
static virDomainPtr openvzDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid);
static virDomainPtr openvzDomainLookupByName(virConnectPtr conn, const char *name);
static int openvzDomainGetInfo(virDomainPtr dom, virDomainInfoPtr info);
static int openvzDomainShutdown(virDomainPtr dom);
static int openvzDomainReboot(virDomainPtr dom, unsigned int flags);
static int openvzDomainCreate(virDomainPtr dom);
static virDrvOpenStatus openvzOpen(virConnectPtr conn, const char *name,
int flags ATTRIBUTE_UNUSED);
static int openvzClose(virConnectPtr conn);
static const char *openvzGetType(virConnectPtr conn ATTRIBUTE_UNUSED);
static int openvzListDomains(virConnectPtr conn, int *ids, int nids);
static int openvzNumDomains(virConnectPtr conn);
static int openvzListDefinedDomains(virConnectPtr conn, char **const names, int nnames);
static int openvzNumDefinedDomains(virConnectPtr conn);
static int openvzStartup(void);
static int openvzShutdown(void);
static int openvzReload(void);
static int openvzActive(void);
static int openvzCloseNetwork(virConnectPtr conn);
static virDrvOpenStatus openvzOpenNetwork(virConnectPtr conn, const char *name ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED);
struct openvz_driver ovz_driver;
/* For errors internal to this library. */
static void
error (virConnectPtr conn, virErrorNumber code, const char *info)
{
const char *errmsg;
errmsg = __virErrorMsg (code, info);
__virRaiseError (conn, NULL, NULL, VIR_FROM_REMOTE,
code, VIR_ERR_ERROR, errmsg, info, NULL, 0, 0,
errmsg, info);
}
static virDomainPtr openvzDomainLookupByID(virConnectPtr conn,
int id) {
struct openvz_driver *driver = (struct openvz_driver *)conn->privateData;
struct openvz_vm *vm = openvzFindVMByID(driver, id);
virDomainPtr dom;
if (!vm) {
error(conn, VIR_ERR_INTERNAL_ERROR, "no domain with matching id");
return NULL;
}
dom = virGetDomain(conn, vm->vmdef->name, vm->vmdef->uuid);
if (!dom) {
error(conn, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->id = vm->vpsid;
return dom;
}
static char *openvzGetOSType(virDomainPtr dom)
{
/* OpenVZ runs on Linux and runs only Linux */
return strdup("Linux");
}
static virDomainPtr openvzDomainLookupByUUID(virConnectPtr conn,
const unsigned char *uuid) {
struct openvz_driver *driver = (struct openvz_driver *)conn->privateData;
struct openvz_vm *vm = openvzFindVMByUUID(driver, uuid);
virDomainPtr dom;
if (!vm) {
error(conn, VIR_ERR_INTERNAL_ERROR, "no domain with matching uuid");
return NULL;
}
dom = virGetDomain(conn, vm->vmdef->name, vm->vmdef->uuid);
if (!dom) {
error(conn, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->id = vm->vpsid;
return dom;
}
static virDomainPtr openvzDomainLookupByName(virConnectPtr conn,
const char *name) {
struct openvz_driver *driver = (struct openvz_driver *)conn->privateData;
struct openvz_vm *vm = openvzFindVMByName(driver, name);
virDomainPtr dom;
if (!vm) {
error(conn, VIR_ERR_INTERNAL_ERROR, "no domain with matching name");
return NULL;
}
dom = virGetDomain(conn, vm->vmdef->name, vm->vmdef->uuid);
if (!dom) {
error(conn, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->id = vm->vpsid;
return dom;
}
static int openvzDomainGetInfo(virDomainPtr dom,
virDomainInfoPtr info) {
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
struct openvz_vm *vm = openvzFindVMByUUID(driver, dom->uuid);
if (!vm) {
error(dom->conn, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
return -1;
}
info->state = vm->status;
/* TODO These need to be calculated differently for OpenVZ */
//info->cpuTime =
//info->maxMem = vm->def->maxmem;
//info->memory = vm->def->memory;
//info->nrVirtCpu = vm->def->vcpus;
return 0;
}
static int openvzDomainShutdown(virDomainPtr dom) {
char cmdbuf[1024];
int ret;
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
struct openvz_vm *vm = openvzFindVMByID(driver, dom->id);
if (!vm) {
error(dom->conn, VIR_ERR_INVALID_DOMAIN, "no domain with matching id");
return -1;
}
if (vm->status != VIR_DOMAIN_RUNNING) {
error(dom->conn, VIR_ERR_OPERATION_DENIED, "domain is not in running state");
return -1;
}
snprintf(cmdbuf, 1024, VZCTL " stop %d >/dev/null 2>&1", dom->id);
ret = system(cmdbuf);
if(WEXITSTATUS(ret)) {
error(dom->conn, VIR_ERR_OPERATION_FAILED, "could not shutdown domain");
return -1;
}
vm->vpsid = -1;
vm->status = VIR_DOMAIN_SHUTOFF;
ovz_driver.num_inactive ++;
ovz_driver.num_active --;
return ret;
}
static int openvzDomainReboot(virDomainPtr dom, unsigned int flags) {
char cmdbuf[1024];
int ret;
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
struct openvz_vm *vm = openvzFindVMByID(driver, dom->id);
if (!vm) {
error(dom->conn, VIR_ERR_INVALID_DOMAIN, "no domain with matching id");
return -1;
}
if (vm->status != VIR_DOMAIN_RUNNING) {
error(dom->conn, VIR_ERR_OPERATION_DENIED, "domain is not in running state");
return -1;
}
snprintf(cmdbuf, 1024, VZCTL " restart %d >/dev/null 2>&1", dom->id);
ret = system(cmdbuf);
if(WEXITSTATUS(ret)) {
error(dom->conn, VIR_ERR_OPERATION_FAILED, "could not reboot domain");
return -1;
}
return ret;
}
static int openvzDomainCreate(virDomainPtr dom) {
char cmdbuf[1024];
int ret;
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
struct openvz_vm *vm = openvzFindVMByID(driver, dom->id);
struct openvz_vm_def *vmdef;
if (!vm) {
error(dom->conn, VIR_ERR_INVALID_DOMAIN, "no domain with matching id");
return -1;
}
if (vm->status != VIR_DOMAIN_SHUTOFF) {
error(dom->conn, VIR_ERR_OPERATION_DENIED, "domain is not in shutoff state");
return -1;
}
vmdef = vm->vmdef;
snprintf(cmdbuf, 1024, VZCTL " start %s >/dev/null 2>&1", vmdef->name);
ret = system(cmdbuf);
if(WEXITSTATUS(ret)) {
error(dom->conn, VIR_ERR_OPERATION_FAILED, "could not start domain");
return -1;
}
sscanf(vmdef->name, "%d", &vm->vpsid);
vm->status = VIR_DOMAIN_RUNNING;
ovz_driver.num_inactive --;
ovz_driver.num_active ++;
return ret;
}
static virDrvOpenStatus openvzOpen(virConnectPtr conn,
const char *name,
int flags ATTRIBUTE_UNUSED) {
struct openvz_vm *vms;
/* Just check if the guy is root. Nothing really to open for OpenVZ */
if (getuid()) { // OpenVZ tools can only be used by r00t
return VIR_DRV_OPEN_DECLINED;
} else {
if (strcmp(name, "openvz:///system"))
return VIR_DRV_OPEN_DECLINED;
}
conn->privateData = &ovz_driver;
virStateInitialize();
vms = openvzGetVPSInfo(conn);
ovz_driver.vms = vms;
return VIR_DRV_OPEN_SUCCESS;
}
static int openvzClose(virConnectPtr conn) {
struct openvz_driver *driver = (struct openvz_driver *)conn->privateData;
struct openvz_vm *vm = driver->vms;
while(vm) {
openvzFreeVMDef(vm->vmdef);
vm = vm->next;
}
vm = driver->vms;
while (vm) {
struct openvz_vm *prev = vm;
vm = vm->next;
free(prev);
}
conn->privateData = NULL;
return 0;
}
static const char *openvzGetType(virConnectPtr conn ATTRIBUTE_UNUSED) {
return strdup("OpenVZ");
}
static int openvzListDomains(virConnectPtr conn, int *ids, int nids) {
int got = 0;
int veid;
FILE *fp;
if((fp = popen(VZLIST " -o vpsid -H 2> /dev/null", "r")) == NULL){
error(conn, VIR_ERR_INTERNAL_ERROR, "Could not popen " VZLIST);
return (int)NULL;
}
while(!(feof(fp)) && got < nids){
fscanf(fp, "%d\n", &veid);
ids[got] = veid;
got ++;
}
return got;
}
static int openvzNumDomains(virConnectPtr conn) {
return ovz_driver.num_active;
}
static int openvzListDefinedDomains(virConnectPtr conn,
char **const names, int nnames) {
int got = 0;
FILE *fp;
int veid;
char vpsname[OPENVZ_NAME_MAX];
/* the -S options lists only stopped domains */
if((fp = popen(VZLIST " -S -o vpsid -H 2> /dev/null", "r")) == NULL){
error(conn, VIR_ERR_INTERNAL_ERROR, "Could not popen " VZLIST);
return (int)NULL;
}
while(!(feof(fp)) && got < nnames){
fscanf(fp, "%d\n", &veid);
sprintf(vpsname, "%d", veid);
names[got] = strdup(vpsname);
got ++;
}
return got;
}
static int openvzNumDefinedDomains(virConnectPtr conn) {
return ovz_driver.num_inactive;
}
static int openvzStartup(void) {
openvzAssignUUIDs();
return 0;
}
static int openvzShutdown(void) {
return 0;
}
static int openvzReload(void) {
return 0;
}
static int openvzActive(void) {
return 1;
}
static int openvzCloseNetwork(virConnectPtr conn) {
return 0;
}
static virDrvOpenStatus openvzOpenNetwork(virConnectPtr conn,
const char *name ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED) {
return VIR_DRV_OPEN_SUCCESS;
}
static virDriver openvzDriver = {
VIR_DRV_OPENVZ,
"OPENVZ",
LIBVIR_VERSION_NUMBER,
openvzOpen, /* open */
openvzClose, /* close */
openvzGetType, /* type */
NULL, /* version */
NULL, /* hostname */
NULL, /* uri */
NULL, /* getMaxVcpus */
NULL, /* nodeGetInfo */
NULL, /* getCapabilities */
openvzListDomains, /* listDomains */
openvzNumDomains, /* numOfDomains */
NULL, /* domainCreateLinux */
openvzDomainLookupByID, /* domainLookupByID */
openvzDomainLookupByUUID, /* domainLookupByUUID */
openvzDomainLookupByName, /* domainLookupByName */
NULL, /* domainSuspend */
NULL, /* domainResume */
openvzDomainShutdown, /* domainShutdown */
openvzDomainReboot, /* domainReboot */
openvzDomainShutdown, /* domainDestroy */
openvzGetOSType, /* domainGetOSType */
NULL, /* domainGetMaxMemory */
NULL, /* domainSetMaxMemory */
NULL, /* domainSetMemory */
openvzDomainGetInfo, /* domainGetInfo */
NULL, /* domainSave */
NULL, /* domainRestore */
NULL, /* domainCoreDump */
NULL, /* domainSetVcpus */
NULL, /* domainPinVcpu */
NULL, /* domainGetVcpus */
NULL, /* domainGetMaxVcpus */
NULL, /* domainDumpXML */
openvzListDefinedDomains, /* listDomains */
openvzNumDefinedDomains, /* numOfDomains */
openvzDomainCreate, /* domainCreate */
NULL, /* domainDefineXML */
NULL, /* domainUndefine */
NULL, /* domainAttachDevice */
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
static virNetworkDriver openvzNetworkDriver = {
openvzOpenNetwork, /* open */
openvzCloseNetwork, /* close */
NULL, /* numOfNetworks */
NULL, /* listNetworks */
NULL, /* numOfDefinedNetworks */
NULL, /* listDefinedNetworks */
NULL, /* networkLookupByUUID */
NULL, /* networkLookupByName */
NULL, /* networkCreateXML */
NULL, /* networkDefineXML */
NULL, /* networkUndefine */
NULL, /* networkCreate */
NULL, /* networkDestroy */
NULL, /* networkDumpXML */
NULL, /* networkGetBridgeName */
NULL, /* networkGetAutostart */
NULL, /* networkSetAutostart */
};
static virStateDriver openvzStateDriver = {
openvzStartup,
openvzShutdown,
openvzReload,
openvzActive,
};
int openvzRegister(void) {
virRegisterDriver(&openvzDriver);
virRegisterNetworkDriver(&openvzNetworkDriver);
virRegisterStateDriver(&openvzStateDriver);
return 0;
}
#endif /* WITH_OPENVZ */
/*
* Local variables:
* indent-tabs-mode: nil
* c-indent-level: 4
* c-basic-offset: 4
* tab-width: 4
* End:
*/

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src/openvz_driver.h Normal file
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/*
* openvz_driver.h: core driver methods for managing OpenVZ VPSs
*
* Copyright (C) 2006, 2007 Binary Karma.
* Copyright (C) 2006 Shuveb Hussain
*
* 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: Shuveb Hussain <shuveb@binarykarma.com>
*/
#ifndef OPENVZ_DRIVER_H
#define OPENVZ_DRIVER_H
#include "internal.h"
/* OpenVZ commands - Replace with wrapper scripts later? */
#define VZLIST "vzlist"
#define VZCTL "vzctl"
struct openvz_driver {
struct openvz_vm *vms;
int num_active;
int num_inactive;
};
int openvzRegister(void);
#endif
/*
* Local variables:
* indent-tabs-mode: nil
* c-indent-level: 4
* c-basic-offset: 4
* tab-width: 4
* End:
*/