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package uk.ac.cam.cl.xeno.domctl;
import java.io.*;
import java.net.*;
public class CommandNew extends Command
{
public int doCommand(Defaults d, String args[])
{
Runtime r = Runtime.getRuntime ();
String name = getStringParameter(args, 'n', d.domainName);
int size = getIntParameter(args, 'k', d.domainSizeKB);
String image = getStringParameter(args, 'i', d.domainImage);
String initrd = getStringParameter (args, 'r', d.domainInitRD);
int vifs = getIntParameter(args, 'v', d.domainVIFs);
String bargs = getStringParameter (args, 'a', "");
String root_dev = getStringParameter (args, 'd', d.rootDevice);
String nfs_root_path = getStringParameter (args, 'f', d.NWNFSRoot);
String nw_ip = getStringParameter (args, '4', d.NWIP);
String nw_gw = getStringParameter (args, 'g', d.NWGW);
String nw_mask = getStringParameter (args, 'm', d.NWMask);
String nw_nfs_server = getStringParameter (args, 's', d.NWNFSServer);
String nw_host = getStringParameter (args, 'h', d.NWHost);
String domain_ip = "";
int rc = 0;
int domain_id;
DataInputStream dis;
int idx;
int i;
try
{
/* Some initial sanity checks */
if (root_dev.equals ("/dev/nfs") && (vifs == 0)) {
return reportError ("Cannot use NFS root without VIFs configured");
}
/* Create a new empty domain */
Process create_p;
String create_cmdarray[] = new String[3];
int create_rc;
create_cmdarray[0] = d.XIToolsDir + "xi_create";
create_cmdarray[1] = "" + size;
create_cmdarray[2] = name;
if (Settings.TEST) {
reportCommand (create_cmdarray);
domain_id=1;
create_rc=0;
} else {
create_p = r.exec (create_cmdarray);
dis = new DataInputStream (new BufferedInputStream (create_p.getInputStream ()));
domain_id = Integer.parseInt (dis.readLine ());
create_rc = create_p.waitFor ();
}
if (create_rc != 0) {
return reportXIError ("Failed to create domain", create_cmdarray);
} else if (domain_id > d.MaxDomainNumber) {
return reportError ("Cannot configure more than " +
d.MaxDomainNumber + " domains");
}
/* Set up boot parameters to pass to xi_build. */
bargs = "";
if (root_dev.equals ("/dev/nfs")) {
if (vifs == 0) {
return reportError ("Cannot use NFS root without VIFs configured");
}
bargs = (bargs +
"root=/dev/nfs " +
"nfsroot=" + StringPattern.parse(nfs_root_path).resolve(domain_id) +
" ");
} else {
bargs = ("root=" + StringPattern.parse(root_dev).resolve(domain_id) +
" ");
}
if (vifs > 0) {
domain_ip = InetAddressPattern.parse(nw_ip).resolve(domain_id);
if (nw_host == null) {
try {
nw_host = InetAddress.getByName(domain_ip).getHostName();
} catch (UnknownHostException uhe) {
nw_host = "" + nw_ip;
}
}
bargs = ("ip=" + domain_ip +
":" + InetAddressPattern.parse(nw_nfs_server).resolve(domain_id) +
":" + InetAddressPattern.parse(nw_gw).resolve(domain_id) +
":" + InetAddressPattern.parse(nw_mask).resolve(domain_id) +
":" + nw_host +
":eth0:off " + bargs);
}
/* Build the domain */
Process build_p;
String build_cmdarray[] = new String[6];
int build_rc;
idx = 0;
for (i = 0; i < build_cmdarray.length; i ++)
build_cmdarray[i] = "";
build_cmdarray[idx ++] = d.XIToolsDir + "xi_build";
build_cmdarray[idx ++] = "" + domain_id;
build_cmdarray[idx ++] = "" + image;
build_cmdarray[idx ++] = "" + vifs;
if (initrd != null) build_cmdarray[idx ++] = "initrd=" + initrd;
build_cmdarray[idx ++] = "" + bargs;
System.out.println ("Build args: " + bargs);
if (Settings.TEST) {
reportCommand (build_cmdarray);
build_rc = 0;
} else {
build_p = r.exec (build_cmdarray);
build_rc = build_p.waitFor ();
}
if (build_rc != 0) {
return reportXIError ("Failed to build domain", build_cmdarray);
}
/* Set up the first VIF if necessary */
if (vifs > 0) {
Process vifinit_p;
String vifinit_cmdarray[] = new String[4];
int vifinit_rc;
vifinit_cmdarray[0] = d.XIToolsDir + "xi_vifinit";
vifinit_cmdarray[1] = "" + domain_id;
vifinit_cmdarray[2] = "0";
vifinit_cmdarray[3] = domain_ip;
if (Settings.TEST) {
reportCommand (vifinit_cmdarray);
vifinit_rc = 0;
} else {
vifinit_p = r.exec (vifinit_cmdarray);
vifinit_rc = vifinit_p.waitFor ();
}
if (vifinit_rc != 0) {
return reportXIError ("Failed to initialise VIF 0", vifinit_cmdarray);
}
}
}
catch (Exception e)
{
System.err.println ("Could not create new domain (" + e + ")");
e.printStackTrace ();
rc = -1;
}
return rc;
}
public String getName()
{
return "new";
}
public String getUsage()
{
return "[-n<domain_name>] [-k<size>] [-i<image>] [-v<num_vifs>] [-r<initrd>] [-d<root_device>] [-f<nfs_root>] [-s<nfs_boot_server>] [-4<ipv4_boot_address>] [-g<ipv4_boot_gateway>] [-m<ipv4_boot_netmask>] [-h<hostname>] [-a<args>]";
}
public String getHelpText()
{
return
"Create a new domain. Note that most of the parameters will assume\n" +
"default values: it should not be necessary to specify them all. See\n" +
"domctl.xml for the current default settings.\n" +
"\n" +
"General command line options:\n" +
" -n Domain name domain_name\n" +
" -k Domain size (kb) domain_size_kb\n" +
" -i Domain image name domain_image\n" +
" -v Number of VIFs domain_vifs\n" +
" -r InitRD (if required) domain_init_rd\n" +
" -d Root device (e.g /dev/nfs, /dev/hda3) root_device\n" +
" -a Additional boot parameters\n" +
"\n" +
"Networking options:\n" +
" -f NFS root (if /dev/nfs specified) nw_nfs_root\n" +
" -s NFS server nw_nfs_server\n" +
" -4 Domain IPv4 address nw_ip\n" +
" -g Domain gateway nw_gw\n" +
" -m Domain net mask nw_mask\n" +
" -h Domain hostname nw_host\n" +
"\n" +
"Parameters to -d, -f, -4, -g, -h can be specified as patterns into\n" +
"which the allocated domain ID will be incorporated. e.g. for\n" +
"domain 1 patterns would expand as follows:\n" +
"\n" +
" /dev/hda+ /dev/hda1\n" +
" /dev/hda7+ /dev/hda8\n" +
" 128.232.8.50+ 128.232.8.51\n" +
"\n" +
"Additionally, patterns for -4 -g -m can include an = which is\n" +
"expanded to the corresponding setting from the calling domain.\n";
}
}
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