1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
import os from "node:os";
import { join } from "@std/path";
import { defineYargsModule, DEMAND_COMMAND_MESSAGE } from "./yargs.ts";
type ArchAliasMap = { [name: string]: string[] };
const arches = {
x86_64: ["x86_64", "amd64"],
i386: ["i386", "x86", "i686"],
} as const satisfies ArchAliasMap;
type Arch = keyof typeof arches;
type GeneralArch = (typeof arches)[Arch][number];
function normalizeArch(generalName: GeneralArch): Arch {
for (const [name, aliases] of Object.entries(arches as ArchAliasMap)) {
if (aliases.includes(generalName)) return name as Arch;
}
throw Error("Unknown architecture name.");
}
interface GeneralVmSetup {
name?: string[];
arch: GeneralArch;
disk: string;
sshForwardPort?: number;
tpm?: boolean;
kvm?: boolean;
}
interface VmSetup {
arch: Arch;
disk: string;
sshForwardPort?: number;
tpm: boolean;
kvm: boolean;
}
const VM_DIR = join(os.homedir(), "vms");
function getDiskFilePath(name: string): string {
return join(VM_DIR, `${name}.qcow2`);
}
const MY_VMS: GeneralVmSetup[] = [
{
name: ["hurd", ...arches.i386.map((a) => `hurd-${a}`)],
arch: "i386",
disk: getDiskFilePath("hurd-i386"),
sshForwardPort: 3222,
},
{
name: [...arches.x86_64.map((a) => `hurd-${a}`)],
arch: "x86_64",
disk: getDiskFilePath("hurd-x86_64"),
sshForwardPort: 3223,
},
{
name: ["win"],
arch: "x86_64",
disk: getDiskFilePath("win"),
tpm: true,
},
];
function normalizeVmSetup(generalSetup: GeneralVmSetup): VmSetup {
const { arch, disk, sshForwardPort, tpm, kvm } = generalSetup;
return {
arch: normalizeArch(arch),
disk,
sshForwardPort,
tpm: tpm ?? false,
kvm: kvm ?? Deno.build.os === "linux",
};
}
function resolveVmSetup(
name: string,
vms: GeneralVmSetup[],
): VmSetup | undefined {
const setup = vms.find((vm) => vm.name?.includes(name));
return setup == null ? undefined : normalizeVmSetup(setup);
}
const qemuBinPrefix = "qemu-system" as const;
const qemuBinSuffix = {
x86_64: "x86_64",
i386: "x86_64",
} as const;
function getQemuBin(arch: Arch): string {
return `${qemuBinPrefix}-${qemuBinSuffix[arch]}`;
}
function getLinuxHostArgs(kvm: boolean): string[] {
return kvm ? ["-enable-kvm"] : [];
}
function getMachineArgs(arch: Arch): string[] {
const is64 = arch === "x86_64";
const machineArgs = is64 ? ["-machine", "q35"] : [];
const memory = is64 ? 8 : 4;
return [...machineArgs, "-m", `${memory}G`];
}
function getNetworkArgs(sshForwardPort?: number): string[] {
const args = ["-net", "nic"];
if (sshForwardPort != null) {
args.push("-net", `user,hostfwd=tcp::${sshForwardPort}-:22`);
}
return args;
}
function getDisplayArgs(): string[] {
return ["-vga", "vmware"];
}
function getDiskArgs(disk: string): string[] {
return ["-drive", `cache=writeback,file=${disk}`];
}
function getTpmControlSocketPath(): string {
return join(VM_DIR, "tpm2/swtpm-sock");
}
function getTpmArgs(tpm: boolean): string[] {
if (!tpm) return [];
return [
"-chardev",
`socket,id=chrtpm,path=${getTpmControlSocketPath()}`,
"-tpmdev",
"emulator,id=tpm0,chardev=chrtpm",
"-device",
"tpm-tis,tpmdev=tpm0",
];
}
function getTpmPreCommand(): string[] {
return [
"swtpm",
"socket",
"--tpm2",
"--tpmstate",
`dir=${join(VM_DIR, "tpm2")}`,
"--ctrl",
`type=unixio,path=${getTpmControlSocketPath()}`,
];
}
function createPreCommands(setup: VmSetup): string[][] {
const { tpm } = setup;
const result = [];
if (tpm) result.push(getTpmPreCommand());
return result;
}
function createQemuArgs(setup: VmSetup): string[] {
const { arch, disk, sshForwardPort, tpm } = setup;
return [
getQemuBin(arch),
...getLinuxHostArgs(setup.kvm),
...getMachineArgs(arch),
...getDisplayArgs(),
...getNetworkArgs(sshForwardPort),
...getDiskArgs(disk),
...getTpmArgs(tpm),
];
}
const gen = defineYargsModule({
command: "gen <name>",
describe: "generate cli command to run the vm",
builder: (builder) => {
return builder
.positional("name", {
describe: "name of the vm to run",
type: "string",
})
.demandOption("name")
.strict();
},
handler: (argv) => {
const vm = resolveVmSetup(argv.name, MY_VMS);
if (vm == null) {
console.error(`No vm called ${argv.name} is found.`);
Deno.exit(-1);
}
const preCommands = createPreCommands(vm);
const cli = createQemuArgs(vm);
for (const command of preCommands) {
console.log(`${command.join(" ")} &`);
}
console.log(`${cli.join(" ")}`);
},
});
export default defineYargsModule({
command: "vm",
describe: "Manage (qemu) virtual machines.",
builder: (builder) => {
return builder.command(gen).demandCommand(1, DEMAND_COMMAND_MESSAGE);
},
handler: () => {},
});
|
