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"lastModified": 1756679287, + "narHash": "sha256-Xd1vOeY9ccDf5VtVK12yM0FS6qqvfUop8UQlxEB+gTQ=", + "owner": "nix-community", + "repo": "home-manager", + "rev": "07fc025fe10487dd80f2ec694f1cd790e752d0e8", + "type": "github" + }, + "original": { + "owner": "nix-community", + "ref": "release-25.05", + "repo": "home-manager", + "type": "github" + } + }, + "libSource": { + "locked": { + "lastModified": 1754788789, + "narHash": "sha256-x2rJ+Ovzq0sCMpgfgGaaqgBSwY+LST+WbZ6TytnT9Rk=", + "owner": "divnix", + "repo": "nixpkgs.lib", + "rev": "a73b9c743612e4244d865a2fdee11865283c04e6", + "type": "github" + }, + "original": { + "owner": "divnix", + "repo": "nixpkgs.lib", + "type": "github" + } + }, + "libSource_2": { + "locked": { + "lastModified": 1753579242, + "narHash": "sha256-zvaMGVn14/Zz8hnp4VWT9xVnhc8vuL3TStRqwk22biA=", + "owner": "divnix", + "repo": "nixpkgs.lib", + "rev": "0f36c44e01a6129be94e3ade315a5883f0228a6e", + "type": "github" + }, + "original": { + "owner": "divnix", + "repo": "nixpkgs.lib", + "type": "github" + } + }, + "nixpkgs": { + "locked": { + "lastModified": 1756886854, + "narHash": "sha256-6tooT142NLcFjt24Gi4B0G1pgWLvfw7y93sYEfSHlLI=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "0e6684e6c5755325f801bda1751a8a4038145d7d", + "type": "github" + }, + "original": { + "owner": "NixOS", + "ref": "nixos-25.05", + "repo": "nixpkgs", + "type": "github" + } + }, + "root": { + "inputs": { + "flake-utils": "flake-utils", + "home-manager": "home-manager", + "libSource": "libSource", + "nixpkgs": "nixpkgs", + "xome": "xome" + } + }, + "systems": { + "locked": { + "lastModified": 1681028828, + "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=", + "owner": "nix-systems", + "repo": "default", + "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e", + "type": "github" + }, + "original": { + "owner": "nix-systems", + "repo": "default", + "type": "github" + } + }, + "systems_2": { + "locked": { + "lastModified": 1681028828, + "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=", + "owner": "nix-systems", + "repo": "default", + "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e", + "type": "github" + }, + "original": { + "owner": "nix-systems", + "repo": "default", + "type": "github" + } + }, + "xome": { + "inputs": { + "flake-utils": "flake-utils_2", + "home-manager": ["home-manager"], + "libSource": "libSource_2", + "nixpkgs": ["nixpkgs"] + }, + "locked": { + "lastModified": 1756510075, + "narHash": "sha256-GJnVyVh26r3AoAwOXgIEia3ICHIb900H2sKOGI/oaOE=", + "owner": "jeff-hykin", + "repo": "xome", + "rev": "5e84fbc5954980b6d972d159790ec62906223ca7", + "type": "github" + }, + "original": { + "owner": "jeff-hykin", + "repo": "xome", + "type": "github" + } + } + }, + "root": "root", + "version": 7 +} diff --git a/flake.nix b/flake.nix new file mode 100644 index 00000000..fe404ac7 --- /dev/null +++ b/flake.nix @@ -0,0 +1,125 @@ +{ + description = "ZenFS"; + inputs = { + libSource.url = "github:divnix/nixpkgs.lib"; + flake-utils.url = "github:numtide/flake-utils"; + nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05"; + home-manager.url = "github:nix-community/home-manager/release-25.05"; + home-manager.inputs.nixpkgs.follows = "nixpkgs"; + xome.url = "github:jeff-hykin/xome"; + xome.inputs.nixpkgs.follows = "nixpkgs"; + xome.inputs.home-manager.follows = "home-manager"; + }; + outputs = { self, flake-utils, nixpkgs, xome, ... }: + flake-utils.lib.eachSystem flake-utils.lib.defaultSystems (system: + let + pkgs = import nixpkgs { + inherit system; + overlays = [ + ]; + config = { + allowUnfree = true; + allowInsecure = false; + permittedInsecurePackages = [ + ]; + }; + }; + inputPackages = [ + pkgs.nodejs + pkgs.esbuild + pkgs.graphviz + pkgs.nodePackages.typescript + pkgs.nodePackages.prettier + ]; + in + { + # this is how the package is built (as a dependency) + packages.default = pkgs.stdenv.mkDerivation { + name = "my-ts-app"; + src = ./.; + + buildInputs = inputPackages; + + buildPhase = '' + export HOME=$(mktemp -d) # Needed by npm to avoid global install warnings + npm install + tsc + ''; + + installPhase = '' + mkdir -p $out + cp -r dist/* $out/ + ''; + }; + + # development environment for contributions + devShells = xome.simpleMakeHomeFor { + inherit pkgs; + pure = true; + homeModule = { + # for home-manager examples, see: + # https://deepwiki.com/nix-community/home-manager/5-configuration-examples + # all home-manager options: + # https://nix-community.github.io/home-manager/options.xhtml + home.homeDirectory = "/tmp/virtual_homes/zenfs"; + home.stateVersion = "25.05"; + home.packages = inputPackages ++ [ + # vital stuff + pkgs.dash # provides "sh" + pkgs.coreutils-full + + # optional stuff + pkgs.gnugrep + pkgs.findutils + pkgs.wget + pkgs.curl + pkgs.unixtools.locale + pkgs.unixtools.more + pkgs.unixtools.ps + pkgs.unixtools.getopt + pkgs.unixtools.ifconfig + pkgs.unixtools.hostname + pkgs.unixtools.ping + pkgs.unixtools.hexdump + pkgs.unixtools.killall + pkgs.unixtools.mount + pkgs.unixtools.sysctl + pkgs.unixtools.top + pkgs.unixtools.umount + pkgs.git + pkgs.htop + pkgs.ripgrep + ]; + + programs = { + home-manager = { + enable = true; + }; + zsh = { + enable = true; + enableCompletion = true; + autosuggestion.enable = true; + syntaxHighlighting.enable = true; + shellAliases.ll = "ls -la"; + history.size = 100000; + # this is kinda like .zshrc + initContent = '' + # lots of things need "sh" + ln -s "$(which dash)" "$HOME/.local/bin/sh" 2>/dev/null + + # this enables some impure stuff like sudo, comment it out to get FULL purity + # export PATH="$PATH:/usr/bin/" + echo + echo "NOTE: if you want to use sudo/git/vim/etc (anything impure) do: sys " + ''; + }; + starship = { + enable = true; + enableZshIntegration = true; + }; + }; + }; + }; + } + ); +} \ No newline at end of file diff --git a/readme.md b/readme.md index f9dafd3d..81c8309b 100644 --- a/readme.md +++ b/readme.md @@ -98,6 +98,29 @@ const contents = fs.readFileSync('/test.txt', 'utf-8'); console.log(contents); ``` +#### Mount Namespaces + +If making middleware, and the downstream consumer isn't providing a file system, you can make an isolated file system. This prevents accidental conflict if multiple middlewares use ZenFS. + +```js +import { configureIsolated, fs as globalThisFs } from '@zenfs/core'; + +// create a local fs +const {fs, path} = await configureIsolated({ + pwd: '/home', + credentials: { uid: 1000, gid: 1000 }, + mounts: { + '/': InMemory, + '/home': InMemory, + }, +}); + +fs.writeFileSync('/home/test.txt', 'isolated'); +globalThisFs.writeFileSync('/home/test.txt', 'global'); +// still says "isolated" +console.log(fs.readFileSync('/home/test.txt', 'utf8')); +``` + #### FS Promises The FS promises API is exposed as `promises`. diff --git a/scripts/test.js b/scripts/test.js index 673de96c..df92a7af 100755 --- a/scripts/test.js +++ b/scripts/test.js @@ -6,36 +6,36 @@ import { join, parse, basename } from 'node:path'; import { parseArgs } from 'node:util'; const { values: options, positionals } = parseArgs({ - options: { - // Output - help: { short: 'h', type: 'boolean', default: false }, - verbose: { short: 'v', type: 'boolean', default: false }, - quiet: { short: 'q', type: 'boolean', default: false }, - log: { short: 'l', type: 'string', default: '' }, - 'file-names': { short: 'N', type: 'boolean', default: false }, - ci: { short: 'C', type: 'boolean', default: false }, - - // Test behavior - test: { short: 't', type: 'string' }, - force: { short: 'f', type: 'boolean', default: false }, - auto: { short: 'a', type: 'boolean', default: false }, - build: { short: 'b', type: 'boolean', default: false }, - common: { short: 'c', type: 'boolean', default: false }, - inspect: { short: 'I', type: 'boolean', default: false }, - skip: { short: 's', type: 'string', multiple: true, default: [] }, - 'exit-on-fail': { short: 'e', type: 'boolean' }, - - // Coverage - coverage: { type: 'string', default: 'tests/.coverage' }, - preserve: { short: 'p', type: 'boolean' }, - report: { type: 'boolean', default: false }, - clean: { type: 'boolean', default: false }, - }, - allowPositionals: true, + options: { + // Output + help: { short: 'h', type: 'boolean', default: false }, + verbose: { short: 'v', type: 'boolean', default: false }, + quiet: { short: 'q', type: 'boolean', default: false }, + log: { short: 'l', type: 'string', default: '' }, + 'file-names': { short: 'N', type: 'boolean', default: false }, + ci: { short: 'C', type: 'boolean', default: false }, + + // Test behavior + test: { short: 't', type: 'string' }, + force: { short: 'f', type: 'boolean', default: false }, + auto: { short: 'a', type: 'boolean', default: false }, + build: { short: 'b', type: 'boolean', default: false }, + common: { short: 'c', type: 'boolean', default: false }, + inspect: { short: 'I', type: 'boolean', default: false }, + skip: { short: 's', type: 'string' }, + 'exit-on-fail': { short: 'e', type: 'boolean' }, + + // Coverage + coverage: { type: 'string', default: 'tests/.coverage' }, + preserve: { short: 'p', type: 'boolean' }, + report: { type: 'boolean', default: false }, + clean: { type: 'boolean', default: false }, + }, + allowPositionals: true, }); if (options.help) { - console.log(`zenfs-test [...options] <...paths> + console.log(`zenfs-test [...options] <...paths> Paths: The setup files to run tests on @@ -63,26 +63,26 @@ Coverage: -p, --preserve Do not delete or report coverage data --report ONLY report coverage --clean ONLY clean up coverage directory`); - process.exit(); + process.exit(); } if (options.quiet && options.verbose) { - console.error('ERROR: Can not specify --verbose and --quiet'); - process.exit(1); + console.error('ERROR: Can not specify --verbose and --quiet'); + process.exit(1); } process.env.NODE_V8_COVERAGE = options.coverage; process.env.ZENFS_LOG_LEVEL = options.log; if (options.clean) { - rmSync(options.coverage, { recursive: true, force: true }); - process.exit(); + rmSync(options.coverage, { recursive: true, force: true }); + process.exit(); } if (options.report) { - execSync('npx c8 report --reporter=text', { stdio: 'inherit' }); - rmSync(options.coverage, { recursive: true, force: true }); - process.exit(); + execSync('npx c8 report --reporter=text', { stdio: 'inherit' }); + rmSync(options.coverage, { recursive: true, force: true }); + process.exit(); } let ci; @@ -91,30 +91,30 @@ if (options.ci) ci = await import('./ci.js'); options.verbose && options.force && console.debug('Forcing tests to exit (--test-force-exit)'); if (options.build) { - !options.quiet && process.stdout.write('Building... '); - try { - execSync('npm run build'); - console.log('done.'); - } catch { - console.warn('failed, continuing without it.'); - } + !options.quiet && process.stdout.write('Building... '); + try { + execSync('npm run build'); + console.log('done.'); + } catch { + console.warn('failed, continuing without it.'); + } } if (!existsSync(join(import.meta.dirname, '../dist'))) { - console.error('ERROR: Missing build. If you are using an installed package, please submit a bug report.'); - process.exit(1); + console.error('ERROR: Missing build. If you are using an installed package, please submit a bug report.'); + process.exit(1); } if (options.auto) { - let sum = 0; + let sum = 0; - for (const pattern of ['**/tests/setup/*.ts', '**/tests/setup-*.ts']) { - const files = await globSync(pattern).filter(f => !f.includes('node_modules')); - sum += files.length; - positionals.push(...files); - } + for (const pattern of ['**/tests/setup/*.ts', '**/tests/setup-*.ts']) { + const files = await globSync(pattern).filter(f => !f.includes('node_modules')); + sum += files.length; + positionals.push(...files); + } - !options.quiet && console.log(`Auto-detected ${sum} test setup files`); + !options.quiet && console.log(`Auto-detected ${sum} test setup files`); } /** @@ -124,112 +124,112 @@ if (options.auto) { * @returns */ function color(text, code) { - return `\x1b[${code}m${text}\x1b[0m`; + return `\x1b[${code}m${text}\x1b[0m`; } async function status(name) { - const start = performance.now(); - - if (options.ci) await ci.startCheck(name); - - const time = () => { - let delta = Math.round(performance.now() - start), - unit = 'ms'; - - if (delta > 5000) { - delta /= 1000; - unit = 's'; - } - - return color(`(${delta} ${unit})`, '2;37'); - }; - - const maybeName = options.verbose ? `: ${name}` : ''; - - return { - async pass() { - if (!options.quiet) console.log(`${color('passed', 32)}${maybeName} ${time()}`); - if (options.ci) await ci.completeCheck(name, 'success'); - }, - async skip() { - if (!options.quiet) console.log(`${color('skipped', 33)}${maybeName} ${time()}`); - if (options.ci) await ci.completeCheck(name, 'skipped'); - }, - async fail() { - console.error(`${color('failed', '1;31')}${maybeName} ${time()}`); - if (options.ci) await ci.completeCheck(name, 'failure'); - process.exitCode = 1; - if (options['exit-on-fail']) process.exit(); - }, - }; + const start = performance.now(); + + if (options.ci) await ci.startCheck(name); + + const time = () => { + let delta = Math.round(performance.now() - start), + unit = 'ms'; + + if (delta > 5000) { + delta /= 1000; + unit = 's'; + } + + return color(`(${delta} ${unit})`, '2;37'); + }; + + const maybeName = options.verbose ? `: ${name}` : ''; + + return { + async pass() { + if (!options.quiet) console.log(`${color('passed', 32)}${maybeName} ${time()}`); + if (options.ci) await ci.completeCheck(name, 'success'); + }, + async skip() { + if (!options.quiet) console.log(`${color('skipped', 33)}${maybeName} ${time()}`); + if (options.ci) await ci.completeCheck(name, 'skipped'); + }, + async fail() { + console.error(`${color('failed', '1;31')}${maybeName} ${time()}`); + if (options.ci) await ci.completeCheck(name, 'failure'); + process.exitCode = 1; + if (options['exit-on-fail']) process.exit(); + }, + }; } if (!options.preserve) rmSync(options.coverage, { force: true, recursive: true }); mkdirSync(options.coverage, { recursive: true }); if (options.common) { - !options.quiet && process.stdout.write('Running common tests...' + (options.verbose ? '\n' : ' ')); - const { pass, fail } = await status('Common tests'); - try { - execSync( - `tsx ${options.inspect ? 'inspect' : ''} ${options.force ? '--test-force-exit' : ''} --test --experimental-test-coverage 'tests/*.test.ts' 'tests/**/!(fs)/*.test.ts'`, - { - stdio: ['ignore', options.verbose ? 'inherit' : 'ignore', 'inherit'], - } - ); - await pass(); - } catch { - await fail(); - } + !options.quiet && process.stdout.write('Running common tests...' + (options.verbose ? '\n' : ' ')); + const { pass, fail } = await status('Common tests'); + try { + execSync( + `tsx ${options.inspect ? 'inspect' : ''} ${options.force ? '--test-force-exit' : ''} --test ${options.preserve ? '' : '--experimental-test-coverage'} 'tests/*.test.ts' 'tests/**/!(fs)/*.test.ts'`, + { + stdio: ['ignore', options.verbose ? 'inherit' : 'ignore', 'inherit'], + } + ); + await pass(); + } catch { + await fail(); + } } const testsGlob = join(import.meta.dirname, `../tests/fs/${options.test || '*'}.test.ts`); for (const setupFile of positionals) { - if (!existsSync(setupFile)) { - !options.quiet && console.warn('Skipping tests for non-existent setup file:', setupFile); - continue; - } - - process.env.SETUP = setupFile; - process.env.VERBOSE = +options.verbose; - - const name = options['file-names'] && !options.ci ? setupFile : parse(setupFile).name; - - if (!options.quiet) { - if (options.verbose) console.log('Running tests:', name); - else process.stdout.write(`Running tests: ${name}... `); - } - - const { pass, fail, skip } = await status(name); - - if (basename(setupFile).startsWith('_')) { - await skip(); - continue; - } - - try { - execSync( - [ - 'tsx --trace-deprecation', - options.inspect ? '--inspect' : '', - '--test --experimental-test-coverage', - options.force ? '--test-force-exit' : '', - options.skip.length ? `--test-skip-pattern='${options.skip.join('|').replaceAll("'", "\\'")}'` : '', - `'${testsGlob.replaceAll("'", "\\'")}'`, - process.env.CMD, - ].join(' '), - { - stdio: ['ignore', options.verbose ? 'inherit' : 'ignore', 'inherit'], - } - ); - await pass(); - } catch { - await fail(); - } + if (!existsSync(setupFile)) { + !options.quiet && console.warn('Skipping tests for non-existent setup file:', setupFile); + continue; + } + + process.env.SETUP = setupFile; + process.env.VERBOSE = +options.verbose; + + const name = options['file-names'] && !options.ci ? setupFile : parse(setupFile).name; + + if (!options.quiet) { + if (options.verbose) console.log('Running tests:', name); + else process.stdout.write(`Running tests: ${name}... `); + } + + const { pass, fail, skip } = await status(name); + + if (basename(setupFile).startsWith('_')) { + await skip(); + continue; + } + + try { + execSync( + [ + 'tsx --trace-deprecation', + options.inspect ? '--inspect' : '', + '--test --experimental-test-coverage', + options.force ? '--test-force-exit' : '', + options.skip ? `--test-skip-pattern=${options.skip}` : '', + `'${testsGlob.replaceAll("'", "\\'")}'`, + process.env.CMD, + ].join(' '), + { + stdio: ['ignore', options.verbose ? 'inherit' : 'ignore', 'inherit'], + } + ); + await pass(); + } catch { + await fail(); + } } if (!options.preserve) { - execSync('npx c8 report --reporter=text', { stdio: 'inherit' }); - rmSync(options.coverage, { recursive: true }); + execSync('npx c8 report --reporter=text', { stdio: 'inherit' }); + rmSync(options.coverage, { recursive: true }); } diff --git a/src/backends/fetch.ts b/src/backends/fetch.ts index 8c77ab21..f8df7dcf 100644 --- a/src/backends/fetch.ts +++ b/src/backends/fetch.ts @@ -155,7 +155,7 @@ const _Fetch = { async create(options: FetchOptions) { const url = new URL(options.baseUrl); - url.pathname = normalizePath(url.pathname); + url.pathname = normalizePath(url.pathname, true); // TODO let baseUrl = url.toString(); if (baseUrl.at(-1) == '/') baseUrl = baseUrl.slice(0, -1); diff --git a/src/backends/store/fs.ts b/src/backends/store/fs.ts index bc7a78f4..0257047a 100644 --- a/src/backends/store/fs.ts +++ b/src/backends/store/fs.ts @@ -9,7 +9,7 @@ import type { CreationOptions, UsageInfo } from '../../internal/filesystem.js'; import { FileSystem } from '../../internal/filesystem.js'; import { Inode, isDirectory, rootIno, type InodeLike } from '../../internal/inode.js'; import { basename, dirname, join, parse, relative } from '../../path.js'; -import { decodeDirListing, encodeDirListing } from '../../utils.js'; +import { decodeDirListing, encodeDirListing } from '../../utils_base.js'; import { S_IFDIR, S_IFREG, size_max } from '../../vfs/constants.js'; import { WrappedTransaction, type Store } from './store.js'; diff --git a/src/config.ts b/src/config.ts index 9e33f1f2..2e68cab6 100644 --- a/src/config.ts +++ b/src/config.ts @@ -1,16 +1,18 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import type { Backend, BackendConfiguration, FilesystemOf, SharedConfig } from './backends/backend.js'; import type { Device, DeviceDriver } from './internal/devices.js'; +import type { V_Context } from './internal/contexts.js'; +import type { Configuration as LogConfiguration } from 'kerium/log'; +import type { CaseFold } from './internal/filesystem.js'; import { log, withErrno } from 'kerium'; import { checkOptions, isBackend, isBackendConfig } from './backends/backend.js'; -import { defaultContext } from './internal/contexts.js'; +import { getContext } from './internal/contexts.js'; import { createCredentials } from './internal/credentials.js'; import { DeviceFS } from './internal/devices.js'; import { FileSystem } from './internal/filesystem.js'; import { _setAccessChecks } from './vfs/config.js'; -import * as fs from './vfs/index.js'; -import { mounts } from './vfs/shared.js'; +import * as defaultFs from './vfs/index.js'; /** * Update the configuration of a file system. @@ -74,10 +76,10 @@ export async function resolveMountConfig(configuration: Mount } checkOptions(backend, configuration); - const mount = (await backend.create(configuration)) as FilesystemOf; - configureFileSystem(mount, configuration); - await mount.ready(); - return mount; + const mountFs = (await backend.create(configuration)) as FilesystemOf; + configureFileSystem(mountFs, configuration); + await mountFs.ready(); + return mountFs; } /** @@ -130,6 +132,12 @@ export interface Configuration extends SharedConfig { */ disableAccessChecks: boolean; + /** + * If set, sets case folding for the file system(s). + * @default null + */ + caseFold?: CaseFold; + /** * If true, files will only sync to the file system when closed. * This overrides `disableUpdateOnRead` @@ -143,7 +151,27 @@ export interface Configuration extends SharedConfig { /** * Configurations options for the log. */ - log: log.Configuration; + log: LogConfiguration; + + /** + * FileSystem (for isolated trees only) + */ + fs: typeof defaultFs; +} + +function partialToFullConfig(config: Partial>): Configuration { + return { + ...config, + mounts: (config.mounts || {}) as { [K in keyof T]: MountConfiguration; }, + uid: config.uid || 0, + gid: config.gid || 0, + addDevices: !!config.addDevices, + disableAccessChecks: !!config.disableAccessChecks, + onlySyncOnClose: !!config.onlySyncOnClose, + caseFold: config.caseFold || null, + log: config.log || {}, + fs: config.fs || defaultFs, + } as Configuration; } /** @@ -156,8 +184,8 @@ export async function configureSingle(configuration: MountCon } const resolved = await resolveMountConfig(configuration); - fs.umount('/'); - fs.mount('/', resolved); + defaultFs.umount.call(null, '/'); + defaultFs.mount.call(null, '/', resolved); } /** @@ -166,26 +194,26 @@ export async function configureSingle(configuration: MountCon * This is implemented as a separate function to avoid a circular dependency between vfs/shared.ts and other vfs layer files. * @internal */ -async function mount(path: string, mount: FileSystem): Promise { +async function mountHelper(path: string, childFs: FileSystem, parentFs: typeof defaultFs): Promise { if (path == '/') { - fs.mount(path, mount); + parentFs.mount.call(null, path, childFs); return; } - const stats = await fs.promises.stat(path).catch(() => null); + const stats = await parentFs.promises.stat.call(null, path).catch(() => null); if (!stats) { - await fs.promises.mkdir(path, { recursive: true }); + await parentFs.promises.mkdir.call(null, path, { recursive: true }); } else if (!stats.isDirectory()) { throw withErrno('ENOTDIR', 'Missing directory at mount point: ' + path); } - fs.mount(path, mount); + parentFs.mount.call(null, path, childFs); } /** * @category Backends and Configuration */ -export function addDevice(driver: DeviceDriver, options?: object): Device { - const devfs = mounts.get('/dev'); +export function addDevice(driver: DeviceDriver, options?: object, $?: V_Context): Device { + const devfs = getContext($).mounts.get('/dev'); if (!(devfs instanceof DeviceFS)) throw log.crit(withErrno('ENOTSUP', '/dev does not exist or is not a device file system')); return devfs._createDevice(driver, options); } @@ -197,12 +225,14 @@ const _defaultDirectories = ['/tmp', '/var', '/etc']; * @category Backends and Configuration * @see Configuration */ -export async function configure(configuration: Partial>): Promise { +export async function configure(this: V_Context, partialConfiguration: Partial>): Promise { + const configuration = partialToFullConfig(partialConfiguration); + const $$ = getContext(this); Object.assign( - defaultContext.credentials, + $$.credentials, createCredentials({ - uid: configuration.uid || 0, - gid: configuration.gid || 0, + uid: configuration.uid, + gid: configuration.gid, }) ); @@ -220,33 +250,34 @@ export async function configure(configuration: Partial { +export async function sync(this: V_Context): Promise { + const {mounts, fs} = getContext(this); for (const fs of mounts.values()) await fs.sync(); } diff --git a/src/context.ts b/src/context.ts index 442f8404..165939ad 100644 --- a/src/context.ts +++ b/src/context.ts @@ -1,60 +1,154 @@ // SPDX-License-Identifier: LGPL-3.0-or-later +import type { Bound } from 'utilium'; +import type { Credentials, CredentialsInit } from './internal/credentials.js'; +import type { FSContext, V_Context } from './internal/contexts.js'; + import { bindFunctions } from 'utilium'; -import type { BoundContext, ContextInit, FSContext, V_Context } from './internal/contexts.js'; -import { defaultContext } from './internal/contexts.js'; +import { getContext, allContexts, rootContexts } from './internal/contexts.js'; +import { _createUnboundRootContext, _createUnboundChildContext } from './internal/init_context.js'; import { createCredentials } from './internal/credentials.js'; -import * as path from './path.js'; -import * as fs from './vfs/index.js'; - -export type { BoundContext, ContextInit, FSContext, V_Context }; +import * as unboundPath from './path.js'; +import * as unboundFs from './vfs/index.js'; +import { InMemory } from './backends/memory.js'; +import { FileSystem } from './internal/filesystem.js'; -// 0 is reserved for the global/default context -let _nextId = 1; +export type { V_Context } +// summary: +// - our goal is for all contexts to be bound contexts +// (the user should never need to know bound/unbound exists) +// e.g. the context object should: +// - have a .fs property +// - have a .path property +// - have a .createChildContext() method +// - PROBLEM: those things^ create a circular dependency +// (defaultContext imports fs) +// (fs imports defaultContext) +// - SOLUTION: the weak context object +// - we create weak context object (FSContext) that fs/path can import +// - customize that weak context object as needed +// - then update (mutate) that object to meet the +// definition of the BoundContext strong context interface /** - * A map of all contexts. - * @internal * @category Contexts */ -export const boundContexts = new Map(); +export interface RestrictedContextOptions { + root?: string; + pwd?: string; + credentials?: CredentialsInit; + mounts?: Map; +} /** - * Allows you to restrict operations to a specific root path and set of credentials. - * Note that the default credentials of a bound context are copied from the global credentials. * @category Contexts */ -export function bindContext( - this: void | null | FSContext, - { root = this?.root || '/', pwd = this?.pwd || '/', credentials = structuredClone(defaultContext.credentials) }: ContextInit = {} -): BoundContext { - const parent = this ?? defaultContext; - - const ctx: FSContext & { parent: FSContext } = { - id: _nextId++, - root, - pwd, - credentials: createCredentials(credentials), - descriptors: new Map(), - parent, - children: [], +export interface BoundContext extends FSContext { + fs: Bound & { + promises: Bound; + xattr: Bound; }; - const bound = { - ...ctx, + /** Path functions, bound to the context */ + path: Bound; + + /** + * Allows you to restrict operations to a specific root path and set of credentials. + * Note that the default credentials of a bound context are copied from the parent + * @category Contexts + * @example + * ```ts + * import { context as defaultContext } from '@zenfs/core'; + * import assert from 'node:assert'; + * + * for(const i of [1, 2, 3]) defaultContext.fs.mkdirSync('/' + i); + * + * const childContext1 = defaultContext.createChildContext({ root: '/1' }); + * const childContext2 = defaultContext.createChildContext({ root: '/2' }); + * const childContext3 = defaultContext.createChildContext({ root: '/3' }); + * childContext1.fs.writeFileSync('/example.txt', 'fs1'); + * childContext2.fs.writeFileSync('/example.txt', 'fs2'); + * childContext3.fs.writeFileSync('/example.txt', 'fs3'); + * + * assert(!defaultContext.fs.existsSync('/example.txt')); + * assert(defaultContext.fs.existsSync('/1/example.txt')); + * assert(defaultContext.fs.existsSync('/2/example.txt')); + * assert(defaultContext.fs.existsSync('/3/example.txt')); + * + * // cannot escape their own root + * assert(!childContext1.fs.existsSync('../1/example.txt')); + * assert(!childContext1.fs.existsSync('../2/example.txt')); + * assert(!childContext1.fs.existsSync('../3/example.txt')); + * + * // double nested contexts + * childContext3.mkdirSync('/sub'); + * const grandchildContext = childContext3.createChildContext({ root: '/sub' }); + * grandchildContext.writeFileSync('double-nested.txt', 'whoa'); + * assert(defaultContext.fs.existsSync('/3/sub/double-nested.txt')); + * isolatedContext1.fs.writeFileSync('/example.txt', 'fs4'); + * ``` + */ + createChildContext(init: RestrictedContextOptions): BoundContext; +} + +/** + * Creates a strong context with no parents + * Useful for creating completely isolated in-memory environments + * @category Contexts + * @example + * ```ts + * import { context as defaultContext, fs, createIsolatedContext } from '@zenfs/core'; + * import assert from 'node:assert'; + * + * const isolatedContext1 = createIsolatedContext({ root: '/' }); + * const isolatedContext2 = createIsolatedContext({ root: '/' }); + * + * isolatedContext1.fs.writeFileSync('/example.txt', 'fs2'); + * isolatedContext2.fs.writeFileSync('/example.txt', 'fs3'); + * + * // no effect on other contexts + * assert(!defaultContext.fs.fs.existsSync('/example.txt')); + * ``` + */ +export function createIsolatedContext(options: RestrictedContextOptions = {}): BoundContext { + const rootContext = _createUnboundRootContext({ + root: options.root || '/', + pwd: options.pwd || '/', + mounts: options.mounts || new Map([['/', InMemory]]), + credentials: createCredentials({ uid: 0, gid: 0, ...options.credentials }), + }); + upgradeToBoundContext(rootContext); + return rootContext as BoundContext; +} + +/** + * Creates a new child context with this context as the parent + * @category Contexts + * @internal + */ +function _createStrongChildContext(this: BoundContext, init: RestrictedContextOptions = {}): BoundContext { + const childContext = _createUnboundChildContext(this, init as Record); + upgradeToBoundContext(childContext); + return childContext as BoundContext; +} + +/** + * Strengthen a weak context to a strong context + * @internal + */ +function upgradeToBoundContext(context: FSContext) { + Object.assign(context, { fs: { - ...bindFunctions(fs, ctx), - promises: bindFunctions(fs.promises, ctx), - xattr: bindFunctions(fs.xattr, ctx), - }, - path: bindFunctions(path, ctx), - bind: (init: ContextInit) => { - const child = bindContext.call(ctx, init); - ctx.children.push(child); - return child; + ...bindFunctions(unboundFs, context), + promises: bindFunctions(unboundFs.promises, context), + xattr: bindFunctions(unboundFs.xattr, context), }, - }; + path: bindFunctions(unboundPath, context), + createChildContext: _createStrongChildContext.bind(context as BoundContext), + }); +} - boundContexts.set(ctx.id, bound); +// convert the default context from merely FSContext to BoundContext +const defaultContextLink = getContext(null); +upgradeToBoundContext(defaultContextLink); - return bound; -} +export { defaultContextLink as context, rootContexts }; diff --git a/src/index.ts b/src/index.ts index aad7925d..84cd8812 100644 --- a/src/index.ts +++ b/src/index.ts @@ -6,8 +6,10 @@ export * from './internal/index.js'; export * from './mixins/index.js'; export * from './vfs/stats.js'; export * from './utils.js'; -export { mounts } from './vfs/shared.js'; export * from './vfs/index.js'; +import { context } from './context.js'; +const mounts = context.mounts; +export { mounts }; export { fs }; import * as fs from './vfs/index.js'; export default fs; diff --git a/src/internal/contexts.ts b/src/internal/contexts.ts index 285b278e..000dfe37 100644 --- a/src/internal/contexts.ts +++ b/src/internal/contexts.ts @@ -1,19 +1,31 @@ // SPDX-License-Identifier: LGPL-3.0-or-later -// This needs to be in a separate file to avoid circular dependencies -import type { Bound } from 'utilium'; -import type * as path from '../path.js'; import type { SyncHandle } from '../vfs/file.js'; -import type * as fs from '../vfs/index.js'; import type { Credentials, CredentialsInit } from './credentials.js'; +import type { FileSystem } from './filesystem.js'; import { createCredentials } from './credentials.js'; +// NOTE1: this file is separate from init_context.ts because of circular dependencies +// for example, previously: +// context.ts->memory.ts->fs.ts->file_index.ts->path.ts->context.ts +// context.ts->memory.ts->fs.ts->file_index.ts->inode.ts->context.ts +// context.ts->memory.ts->fs.ts->utils.ts->inode.ts->context.ts +// NOTE2: import { SyncHandle } is still a circular dependency but +// because it is only a type import, typescript is able to figure it out + +/** + * All contexts + * @internal + * @category Contexts + */ +export const allContexts: Record = {}; + /** * A context used for FS operations * @category Contexts */ export interface FSContext { /** The unique ID of the context */ - readonly id: number; + readonly id: string; /** * The absolute root path of the context @@ -31,55 +43,51 @@ export interface FSContext { /** A map of open file descriptors to their handles */ descriptors: Map; - /** The parent context, if any. */ - parent: V_Context; - /** The child contexts */ children: FSContext[]; + + /** A map of mount points to file systems */ + mounts: Map; + + /** The parent context, if any. */ + parent: null | FSContext; } /** - * maybe an FS context + * maybe FSContext or StrongFSContext */ -export type V_Context = void | null | (Partial & object); +export type V_Context = void | null | FSContext; /** - * Allows you to restrict operations to a specific root path and set of credentials. + * A map of all top level contexts (no parents) + * @internal * @category Contexts */ -export interface BoundContext extends FSContext { - fs: Bound & { promises: Bound; xattr: Bound }; +export const rootContexts: FSContext[] = []; - /** Path functions, bound to the context */ - path: Bound; - - /** Creates a new child context with this context as the parent */ - bind(init: ContextInit): BoundContext; - - /** The parent context, if any. */ - parent: FSContext; -} +let defaultContext : V_Context = null; /** + * Only internal/context.ts should ever call this function + * @internal @hidden * @category Contexts */ -export interface ContextInit { - root?: string; - pwd?: string; - credentials?: CredentialsInit; +export function _initDefaultContext(context : FSContext) { + if (defaultContext != null) { + throw new Error("This shouldn't be possible, but _initDefaultContext() was called after the defaultContext was already initialized. Only internal/context.ts should ever call this function"); + } + defaultContext = context; } -/** - * The default/global context. - * @internal @hidden - * @category Contexts - */ -export const defaultContext: FSContext = { - id: 0, - root: '/', - pwd: '/', - credentials: createCredentials({ uid: 0, gid: 0 }), - descriptors: new Map(), - parent: null, - children: [], -}; +export function getContext($: V_Context): FSContext { + if (defaultContext == null) { + throw new Error("This shouldn't be possible, but somehow getContext was called before the default context was set"); + } + if (!$) { + return defaultContext as FSContext; + } + if (($ as any)[Symbol.toStringTag] == 'Module' || $.mounts == null) { + return defaultContext; + } + return $; +} \ No newline at end of file diff --git a/src/internal/index.ts b/src/internal/index.ts index 019d42fd..32e5f71a 100644 --- a/src/internal/index.ts +++ b/src/internal/index.ts @@ -7,3 +7,4 @@ export * from './file_index.js'; export * from './filesystem.js'; export * from './index_fs.js'; export * from './inode.js'; +import './init_context.js'; \ No newline at end of file diff --git a/src/internal/init_context.ts b/src/internal/init_context.ts new file mode 100644 index 00000000..6993d1b3 --- /dev/null +++ b/src/internal/init_context.ts @@ -0,0 +1,61 @@ +import type * as path from '../path.js'; +import type { SyncHandle } from '../vfs/file.js'; +import type * as fs from '../vfs/index.js'; +import type { Credentials, CredentialsInit } from './credentials.js'; +import { createCredentials } from './credentials.js'; +import { FileSystem } from './filesystem.js'; +import { InMemory } from '../backends/memory.js'; +import { type FSContext, type V_Context, allContexts, rootContexts, _initDefaultContext } from './contexts.js'; + +// NOTE: context.ts is a separate file to prevent circular dependencies when +// things like path.ts need to call getContext() +// (e.g. context.ts->memory.ts->fs.ts->file_index.ts->path.ts->context.ts) + +/** + * safe creation of an additional root context + * @internal + * @category Contexts + */ +export function _createUnboundRootContext(options: Record): FSContext { + const id = `${rootContexts.length}`; + const rootMemory = InMemory.create({ label: 'root' }) + const ctx = { + id, + root: options.root || '/', + pwd: options.pwd || '/', + credentials: createCredentials({ uid: 0, gid: 0, ...options.credentials||{} }), + descriptors: new Map() as Map, + parent: null, + children: [] as FSContext[], + mounts: options.mounts || new Map([ ['/', rootMemory] ]) as Map, + } as FSContext; + rootMemory._mountPoint = "/"; + if (allContexts[id]) throw new Error('Do no construct FSContexts directly. Context with id ' + id + ' already exists.'); + allContexts[id] = ctx; + rootContexts.push(ctx); + return ctx; +} + +/** + * safe creation of a child context + * @internal + * @category Contexts + */ +export function _createUnboundChildContext(parent: FSContext, options: Record): FSContext { + const id = `${parent.id}-${parent.children.length}`; + const ctx = { + id, + root: (options.root || parent.root) as string, + pwd: (options.pwd || parent.pwd) as string, + credentials: createCredentials({ gid: 0, uid: 0, ...options.credentials||structuredClone(parent.credentials) }), + descriptors: new Map() as Map, + parent, + children: [] as FSContext[], + mounts: (options.mounts || parent.mounts) as Map, + } as FSContext; + ctx.parent = parent; + parent.children.push(ctx); + return ctx; +} + +_initDefaultContext(_createUnboundRootContext({})); \ No newline at end of file diff --git a/src/internal/inode.ts b/src/internal/inode.ts index daba8dad..3d01e6a0 100644 --- a/src/internal/inode.ts +++ b/src/internal/inode.ts @@ -7,7 +7,7 @@ import { decodeUTF8, encodeUTF8, pick } from 'utilium'; import { BufferView } from 'utilium/buffer.js'; import * as c from '../vfs/constants.js'; import { Stats, type StatsLike } from '../vfs/stats.js'; -import { defaultContext, type V_Context } from './contexts.js'; +import { type V_Context, getContext } from './contexts.js'; /** * Root inode @@ -438,7 +438,7 @@ export function isFIFO(metadata: { mode: number }): boolean { * @internal */ export function hasAccess($: V_Context, inode: Pick, access: number): boolean { - const credentials = $?.credentials || defaultContext.credentials; + const credentials = getContext($).credentials; if (isSymbolicLink(inode) || credentials.euid === 0 || credentials.egid === 0) return true; diff --git a/src/path.ts b/src/path.ts index a22ecd1f..c937f844 100644 --- a/src/path.ts +++ b/src/path.ts @@ -28,9 +28,9 @@ https://raw.githubusercontent.com/nodejs/node/3907bd1/lib/path.js */ import type { ParsedPath } from 'node:path'; -import type { V_Context } from './context.js'; -import { defaultContext } from './internal/contexts.js'; -import { globToRegex } from './utils.js'; +import type { V_Context } from './internal/contexts.js'; +import { getContext } from './internal/contexts.js'; +import { globToRegex } from './utils_base.js'; export type AbsolutePath = `/${string}`; @@ -110,7 +110,7 @@ export function formatExt(ext: string): string { export function resolve(this: V_Context, ...parts: (string | undefined)[]): AbsolutePath { let resolved = ''; - for (const part of [...parts.reverse(), this?.pwd ?? defaultContext.pwd]) { + for (const part of [...parts.reverse(), getContext(this).pwd]) { if (!part?.length) continue; resolved = `${part}/${resolved}`; diff --git a/src/utils.ts b/src/utils.ts index 007e6b65..3d23c7eb 100644 --- a/src/utils.ts +++ b/src/utils.ts @@ -1,81 +1,19 @@ // SPDX-License-Identifier: LGPL-3.0-or-later -import { withErrno, type Exception } from 'kerium'; +import { withErrno } from 'kerium'; import type * as fs from 'node:fs'; -import type { Worker as NodeWorker } from 'node:worker_threads'; -import { decodeUTF8, encodeUTF8, type OptionalTuple } from 'utilium'; import { resolve } from './path.js'; +import { type V_Context } from './internal/contexts.js'; +import "./internal/init_context.js"; -declare global { - function atob(data: string): string; - function btoa(data: string): string; -} - -/** - * Decodes a directory listing - * @hidden - */ -export function decodeDirListing(data: Uint8Array): Record { - return JSON.parse(decodeUTF8(data), (k, v) => - k == '' ? v : typeof v == 'string' ? BigInt(v).toString(16).slice(0, Math.min(v.length, 8)) : (v as number) - ); -} - -/** - * Encodes a directory listing - * @hidden - */ -export function encodeDirListing(data: Record): Uint8Array { - return encodeUTF8(JSON.stringify(data)); -} - -export type Callback = (e: Exception | NoError, ...args: OptionalTuple) => unknown; - -/** - * Normalizes a mode - * @param def default - * @internal - */ -export function normalizeMode(mode: unknown, def?: number): number { - if (typeof mode == 'number') return mode; - - if (typeof mode == 'string') { - const parsed = parseInt(mode, 8); - if (!isNaN(parsed)) { - return parsed; - } - } - - if (typeof def == 'number') return def; - - throw withErrno('EINVAL', 'Invalid mode: ' + mode?.toString()); -} - -/** - * Normalizes a time - * @internal - */ -export function normalizeTime(time: string | number | Date): number { - if (time instanceof Date) return time.getTime(); +// NOTE: without utils_base.ts, there is a circular dependency with path.ts +export * from './utils_base.js'; - try { - return Number(time); - } catch { - throw withErrno('EINVAL', 'Invalid time.'); - } -} - -/** - * TypeScript is dumb, so we need to assert the type of a value sometimes. - * For example, after calling `normalizePath`, TS still thinks the type is `PathLike` and not `string`. - * @internal @hidden - */ -export function __assertType(value: unknown): asserts value is T {} /** * Normalizes a path * @internal */ -export function normalizePath(p: fs.PathLike, noResolve: boolean = false): string { +export function normalizePath(this: V_Context, p: fs.PathLike, noResolve: boolean = false): string { if (p instanceof URL) { if (p.protocol != 'file:') throw withErrno('EINVAL', 'URLs must use the file: protocol'); p = p.pathname; @@ -87,56 +25,7 @@ export function normalizePath(p: fs.PathLike, noResolve: boolean = false): strin p = p.replaceAll(/[/\\]+/g, '/'); // Note: PWD is not resolved here, it is resolved later. - return noResolve ? p : resolve(p); -} - -/** - * Normalizes options - * @param options options to normalize - * @param encoding default encoding - * @param flag default flag - * @param mode default mode - * @internal - */ -export function normalizeOptions( - options: fs.WriteFileOptions | (fs.EncodingOption & { flag?: fs.OpenMode }) | undefined, - encoding: BufferEncoding | null = 'utf8', - flag: string, - mode: number = 0 -): fs.ObjectEncodingOptions & { flag: string; mode: number } { - if (typeof options != 'object' || options === null) { - return { - encoding: typeof options == 'string' ? options : (encoding ?? null), - flag, - mode, - }; - } - - return { - encoding: typeof options?.encoding == 'string' ? options.encoding : (encoding ?? null), - flag: typeof options?.flag == 'string' ? options.flag : flag, - mode: normalizeMode('mode' in options ? options?.mode : null, mode), - }; -} - -/** - * Converts a glob pattern to a regular expression - * @internal - */ -export function globToRegex(pattern: string): RegExp { - pattern = pattern - .replace(/([.?+^$(){}|[\]/])/g, '$1') - .replace(/\*\*/g, '.*') - .replace(/\*/g, '[^/]*') - .replace(/\?/g, '.'); - return new RegExp(`^${pattern}$`); -} - -export async function waitOnline(worker: NodeWorker): Promise { - const online = Promise.withResolvers(); - setTimeout(() => online.reject(withErrno('ETIMEDOUT')), 500); - worker.on('online', online.resolve); - await online.promise; + return noResolve ? p : resolve.call(this, p); } /** @@ -144,4 +33,4 @@ export async function waitOnline(worker: NodeWorker): Promise { */ export function _tempDirName(prefix: fs.PathLike) { return `/tmp/${normalizePath(prefix, true)}${Date.now()}-${Math.random().toString(36).slice(2)}`; -} +} \ No newline at end of file diff --git a/src/utils_base.ts b/src/utils_base.ts new file mode 100644 index 00000000..3d2f3896 --- /dev/null +++ b/src/utils_base.ts @@ -0,0 +1,121 @@ +import { withErrno, type Exception } from 'kerium'; +import type * as fs from 'node:fs'; +import type { Worker as NodeWorker } from 'node:worker_threads'; +import { decodeUTF8, encodeUTF8, type OptionalTuple } from 'utilium'; + +// NOTE: without utils_base.ts, there is a circular dependency with utils.ts and path.ts + +declare global { + function atob(data: string): string; + function btoa(data: string): string; +} + +/** + * Decodes a directory listing + * @hidden + */ +export function decodeDirListing(data: Uint8Array): Record { + return JSON.parse(decodeUTF8(data), (k, v) => + k == '' ? v : typeof v == 'string' ? BigInt(v).toString(16).slice(0, Math.min(v.length, 8)) : (v as number) + ); +} + +/** + * Encodes a directory listing + * @hidden + */ +export function encodeDirListing(data: Record): Uint8Array { + return encodeUTF8(JSON.stringify(data)); +} + +export type Callback = (e: Exception | NoError, ...args: OptionalTuple) => unknown; + +/** + * Normalizes a mode + * @param def default + * @internal + */ +export function normalizeMode(mode: unknown, def?: number): number { + if (typeof mode == 'number') return mode; + + if (typeof mode == 'string') { + const parsed = parseInt(mode, 8); + if (!isNaN(parsed)) { + return parsed; + } + } + + if (typeof def == 'number') return def; + + throw withErrno('EINVAL', 'Invalid mode: ' + mode?.toString()); +} + +/** + * Normalizes a time + * @internal + */ +export function normalizeTime(time: string | number | Date): number { + if (time instanceof Date) return time.getTime(); + + try { + return Number(time); + } catch { + throw withErrno('EINVAL', 'Invalid time.'); + } +} + +/** + * TypeScript is dumb, so we need to assert the type of a value sometimes. + * For example, after calling `normalizePath`, TS still thinks the type is `PathLike` and not `string`. + * @internal @hidden + */ +export function __assertType(value: unknown): asserts value is T {} + +/** + * Normalizes options + * @param options options to normalize + * @param encoding default encoding + * @param flag default flag + * @param mode default mode + * @internal + */ +export function normalizeOptions( + options: fs.WriteFileOptions | (fs.EncodingOption & { flag?: fs.OpenMode }) | undefined, + encoding: BufferEncoding | null = 'utf8', + flag: string, + mode: number = 0 +): fs.ObjectEncodingOptions & { flag: string; mode: number } { + if (typeof options != 'object' || options === null) { + return { + encoding: typeof options == 'string' ? options : (encoding ?? null), + flag, + mode, + }; + } + + return { + encoding: typeof options?.encoding == 'string' ? options.encoding : (encoding ?? null), + flag: typeof options?.flag == 'string' ? options.flag : flag, + mode: normalizeMode('mode' in options ? options?.mode : null, mode), + }; +} + +/** + * Converts a glob pattern to a regular expression + * @internal + */ +export function globToRegex(pattern: string): RegExp { + pattern = pattern + .replace(/([.?+^$(){}|[\]/])/g, '$1') + .replace(/\*\*/g, '.*') + .replace(/\*/g, '[^/]*') + .replace(/\?/g, '.'); + return new RegExp(`^${pattern}$`); +} + +export async function waitOnline(worker: NodeWorker): Promise { + const online = Promise.withResolvers(); + setTimeout(() => online.reject(withErrno('ETIMEDOUT')), 500); + worker.on('online', online.resolve); + await online.promise; +} \ No newline at end of file diff --git a/src/vfs/acl.ts b/src/vfs/acl.ts index 471f8355..1d848258 100644 --- a/src/vfs/acl.ts +++ b/src/vfs/acl.ts @@ -10,7 +10,7 @@ import { err } from 'kerium/log'; import { packed, sizeof } from 'memium'; import { $from, struct, types as t } from 'memium/decorators'; import { BufferView } from 'utilium/buffer.js'; -import { defaultContext, type V_Context } from '../internal/contexts.js'; +import { type V_Context, getContext } from '../internal/contexts.js'; import { Attributes, type InodeLike } from '../internal/inode.js'; import { R_OK, S_IRWXG, S_IRWXO, S_IRWXU, W_OK, X_OK } from './constants.js'; import * as xattr from './xattr.js'; @@ -143,7 +143,7 @@ export function check($: V_Context, inode: InodeLike, access: number): boolean { inode.attributes ??= new Attributes(); - const { euid, egid } = $?.credentials ?? defaultContext.credentials; + const { euid, egid } = getContext($).credentials; const data = inode.attributes.get('system.posix_acl_access'); diff --git a/src/vfs/async.ts b/src/vfs/async.ts index 509759eb..76e56ea2 100644 --- a/src/vfs/async.ts +++ b/src/vfs/async.ts @@ -1,12 +1,12 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import type * as fs from 'node:fs'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import type { Callback } from '../utils.js'; import type { Dir, Dirent } from './dir.js'; import type { Stats } from './stats.js'; import type { FileContents, GlobOptionsU } from './types.js'; -import { Buffer } from 'buffer'; +import { Buffer } from 'node:buffer'; import { UV, withErrno, type Exception } from 'kerium'; import { normalizeMode, normalizePath } from '../utils.js'; import { R_OK } from './constants.js'; @@ -623,7 +623,7 @@ export function watchFile( options: { persistent?: boolean; interval?: number } | ((curr: Stats, prev: Stats) => void), listener?: (curr: Stats, prev: Stats) => void ): void { - const normalizedPath = normalizePath(path); + const normalizedPath = normalizePath.call(this, path); const opts = typeof options != 'function' ? options : {}; if (typeof options == 'function') { @@ -664,7 +664,7 @@ watchFile satisfies Omit; * @param listener Optional listener to remove. */ export function unwatchFile(this: V_Context, path: fs.PathLike, listener: (curr: Stats, prev: Stats) => void = nop): void { - const normalizedPath = normalizePath(path); + const normalizedPath = normalizePath.call(this, path); const entry = statWatchers.get(normalizedPath); if (entry) { @@ -696,7 +696,7 @@ export function watch( options?: fs.WatchOptions | ((event: string, filename: string) => any), listener?: (event: string, filename: string) => any ): FSWatcher { - const watcher = new FSWatcher(this, normalizePath(path), typeof options == 'object' ? options : {}); + const watcher = new FSWatcher(this, normalizePath.call(this, path), typeof options == 'object' ? options : {}); listener = typeof options == 'function' ? options : listener; watcher.on('change', listener || nop); return watcher; diff --git a/src/vfs/dir.ts b/src/vfs/dir.ts index 3f54d877..288ed41f 100644 --- a/src/vfs/dir.ts +++ b/src/vfs/dir.ts @@ -1,6 +1,6 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import type { Dir as _Dir, Dirent as _Dirent } from 'node:fs'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import type { InodeLike } from '../internal/inode.js'; import type { Callback } from '../utils.js'; diff --git a/src/vfs/file.ts b/src/vfs/file.ts index ef1349a3..cbf14956 100644 --- a/src/vfs/file.ts +++ b/src/vfs/file.ts @@ -1,7 +1,7 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import { UV, withErrno } from 'kerium'; -import type { V_Context } from '../context.js'; -import { defaultContext } from '../internal/contexts.js'; +import type { V_Context } from '../internal/contexts.js'; +import { getContext } from '../internal/contexts.js'; import type { FileSystem, StreamOptions } from '../internal/filesystem.js'; import { InodeFlags, isBlockDevice, isCharacterDevice, type InodeLike } from '../internal/inode.js'; import '../polyfills.js'; @@ -240,7 +240,7 @@ export class SyncHandle { * @internal @hidden */ export function toFD(file: SyncHandle): number { - const map = file.context?.descriptors ?? defaultContext.descriptors; + const map = getContext(file.context).descriptors; const fd = Math.max(map.size ? Math.max(...map.keys()) + 1 : 0, 4); map.set(fd, file); return fd; @@ -250,12 +250,12 @@ export function toFD(file: SyncHandle): number { * @internal @hidden */ export function fromFD($: V_Context, fd: number): SyncHandle { - const map = $?.descriptors ?? defaultContext.descriptors; + const map = getContext($).descriptors; const value = map.get(fd); if (!value) throw withErrno('EBADF'); return value; } export function deleteFD($: V_Context, fd: number): boolean { - return ($?.descriptors ?? defaultContext.descriptors).delete(fd); + return getContext($).descriptors.delete(fd); } diff --git a/src/vfs/ioctl.ts b/src/vfs/ioctl.ts index 3e0f00c8..b128f139 100644 --- a/src/vfs/ioctl.ts +++ b/src/vfs/ioctl.ts @@ -11,7 +11,7 @@ import { sizeof } from 'memium'; import { $from, struct, types as t } from 'memium/decorators'; import { _throw } from 'utilium'; import { BufferView } from 'utilium/buffer.js'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import { Inode, InodeFlags } from '../internal/inode.js'; import { normalizePath } from '../utils.js'; import { resolveMount } from './shared.js'; @@ -225,7 +225,7 @@ export async function ioctl { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); @@ -290,7 +290,7 @@ export function ioctlSync { - oldPath = normalizePath(oldPath); + oldPath = normalizePath.call(this, oldPath); __assertType(oldPath); - newPath = normalizePath(newPath); + newPath = normalizePath.call(this, newPath); __assertType(newPath); const $ex = { syscall: 'rename', path: oldPath, dest: newPath }; const src = resolveMount(oldPath, this); @@ -564,7 +564,7 @@ export async function stat(this: V_Context, path: fs.PathLike, options: fs.BigIn export async function stat(this: V_Context, path: fs.PathLike, options?: { bigint?: false }): Promise; export async function stat(this: V_Context, path: fs.PathLike, options?: fs.StatOptions): Promise; export async function stat(this: V_Context, path: fs.PathLike, options?: fs.StatOptions): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(await realpath.call(this, path), this); const $ex = { syscall: 'stat', path }; @@ -583,7 +583,7 @@ stat satisfies typeof promises.stat; export async function lstat(this: V_Context, path: fs.PathLike, options?: { bigint?: boolean }): Promise; export async function lstat(this: V_Context, path: fs.PathLike, options: { bigint: true }): Promise; export async function lstat(this: V_Context, path: fs.PathLike, options?: fs.StatOptions): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const $ex = { syscall: 'lstat', path }; path = join(await realpath.call(this, dirname(path)), basename(path)); const { fs, path: resolved } = resolveMount(path, this); @@ -601,7 +601,7 @@ export async function truncate(this: V_Context, path: fs.PathLike, len: number = truncate satisfies typeof promises.truncate; export async function unlink(this: V_Context, path: fs.PathLike): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); const $ex = { syscall: 'unlink', path }; @@ -618,7 +618,7 @@ unlink satisfies typeof promises.unlink; * @internal */ async function _open($: V_Context, path: fs.PathLike, opt: OpenOptions): Promise { - path = normalizePath(path); + path = normalizePath.call($, path); const mode = normalizeMode(opt.mode, 0o644), flag = flags.parse(opt.flag); @@ -636,7 +636,7 @@ async function _open($: V_Context, path: fs.PathLike, opt: OpenOptions): Promise if (!opt.allowDirectory && mode & constants.S_IFDIR) throw UV('EISDIR', 'open', path); - const { euid: uid, egid: gid } = $?.credentials ?? defaultContext.credentials; + const { euid: uid, egid: gid } = getContext($).credentials; const inode = await fs.createFile(resolved, { mode, @@ -791,7 +791,7 @@ export async function mkdir( path: fs.PathLike, options?: fs.Mode | fs.MakeDirectoryOptions | null ): Promise { - const { euid: uid, egid: gid } = this?.credentials ?? defaultContext.credentials; + const { euid: uid, egid: gid } = getContext(this).credentials; options = typeof options === 'object' ? options : { mode: options }; const mode = normalizeMode(options?.mode, 0o777); @@ -920,8 +920,8 @@ export async function readdir(this: V_Context, _path: fs.PathLike, options?: Rea readdir satisfies typeof promises.readdir; export async function link(this: V_Context, path: fs.PathLike, dest: fs.PathLike): Promise { - path = normalizePath(path); - dest = normalizePath(dest); + path = normalizePath.call(this, path); + dest = normalizePath.call(this, dest); const { fs, path: resolved } = resolveMount(path, this); const dst = resolveMount(dest, this); @@ -951,7 +951,7 @@ link satisfies typeof promises.link; export async function symlink(this: V_Context, dest: fs.PathLike, path: fs.PathLike, type: fs.symlink.Type | string | null = 'file'): Promise { if (!['file', 'dir', 'junction'].includes(type!)) throw new TypeError('Invalid symlink type: ' + type); - path = normalizePath(path); + path = normalizePath.call(this, path); if (await exists.call(this, path)) throw UV('EEXIST', 'symlink', path); @@ -973,7 +973,7 @@ export async function readlink( path: fs.PathLike, options?: fs.BufferEncodingOption | fs.EncodingOption | string | null ): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); __assertType(path); await using handle = await _open(this, path, { flag: 'r', mode: 0o644, preserveSymlinks: true }); if (!isSymbolicLink(handle.inode)) throw UV('EINVAL', 'readlink', path); @@ -1104,7 +1104,7 @@ export async function realpath( options?: fs.EncodingOption | BufferEncoding | fs.BufferEncodingOption ): Promise { const encoding = typeof options == 'string' ? options : (options?.encoding ?? 'utf8'); - path = normalizePath(path); + path = normalizePath.call(this, path); const { fullPath } = await _resolve(this, path); if (encoding == 'utf8' || encoding == 'utf-8') return fullPath; @@ -1190,7 +1190,7 @@ access satisfies typeof promises.access; * @param path The path to the file or directory to remove. */ export async function rm(this: V_Context, path: fs.PathLike, options?: fs.RmOptions) { - path = normalizePath(path); + path = normalizePath.call(this, path); const stats = await lstat.call>(this, path).catch((error: Exception) => { if (error.code == 'ENOENT' && options?.force) return undefined; @@ -1270,8 +1270,8 @@ export async function mkdtempDisposable( * * `fs.constants.COPYFILE_EXCL`: If the destination file already exists, the operation fails. */ export async function copyFile(this: V_Context, src: fs.PathLike, dest: fs.PathLike, mode?: number): Promise { - src = normalizePath(src); - dest = normalizePath(dest); + src = normalizePath.call(this, src); + dest = normalizePath.call(this, dest); if (mode && mode & constants.COPYFILE_EXCL && (await exists.call(this, dest))) throw UV('EEXIST', 'copyFile', dest); @@ -1288,7 +1288,7 @@ copyFile satisfies typeof promises.copyFile; * @todo Use options */ export function opendir(this: V_Context, path: fs.PathLike, options?: fs.OpenDirOptions): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); return Promise.resolve(new Dir(path, this)); } opendir satisfies typeof promises.opendir; @@ -1306,8 +1306,8 @@ opendir satisfies typeof promises.opendir; * * `recursive`: If `true`, copies directories recursively. */ export async function cp(this: V_Context, source: fs.PathLike, destination: fs.PathLike, opts?: fs.CopyOptions): Promise { - source = normalizePath(source); - destination = normalizePath(destination); + source = normalizePath.call(this, source); + destination = normalizePath.call(this, destination); const srcStats = await lstat.call>(this, source); // Use lstat to follow symlinks if not dereferencing @@ -1360,7 +1360,7 @@ export async function statfs(this: V_Context, path: fs.PathLike, opts?: fs.StatF export async function statfs(this: V_Context, path: fs.PathLike, opts: fs.StatFsOptions & { bigint: true }): Promise; export async function statfs(this: V_Context, path: fs.PathLike, opts?: fs.StatFsOptions): Promise; export async function statfs(this: V_Context, path: fs.PathLike, opts?: fs.StatFsOptions): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs } = resolveMount(path, this); return Promise.resolve(_statfs(fs, opts?.bigint)); } diff --git a/src/vfs/shared.ts b/src/vfs/shared.ts index 84c34396..6d7bfded 100644 --- a/src/vfs/shared.ts +++ b/src/vfs/shared.ts @@ -2,14 +2,14 @@ // Utilities and shared data import type * as fs from 'node:fs'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import type { FileSystem } from '../internal/filesystem.js'; import type { InodeLike } from '../internal/inode.js'; +import type { FSContext } from '../internal/contexts.js'; +import { getContext } from '../internal/contexts.js'; import { Errno, Exception, UV, withErrno } from 'kerium'; import { alert, debug, err, info, notice, warn } from 'kerium/log'; -import { InMemory } from '../backends/memory.js'; -import { defaultContext } from '../internal/contexts.js'; import { join, resolve, type AbsolutePath } from '../path.js'; import { normalizePath } from '../utils.js'; import { size_max } from './constants.js'; @@ -20,16 +20,6 @@ import { credentialsAllowRoot } from '../internal/credentials.js'; */ export type MountObject = Record; -/** - * The map of mount points - * @category Backends and Configuration - * @internal - */ -export const mounts: Map = new Map(); - -// Set a default root. -mount('/', InMemory.create({ label: 'root' })); - /** * Mounts the file system at `mountPoint`. * @category Backends and Configuration @@ -37,12 +27,13 @@ mount('/', InMemory.create({ label: 'root' })); */ export function mount(this: V_Context, mountPoint: string, fs: FileSystem): void { if (mountPoint[0] != '/') mountPoint = '/' + mountPoint; + const $$: FSContext = getContext(this); - mountPoint = resolve.call(this, mountPoint); - if (mounts.has(mountPoint)) throw err(withErrno('EINVAL', 'Mount point is already in use: ' + mountPoint)); + mountPoint = resolve.call($$, mountPoint); + if ($$.mounts.has(mountPoint)) throw err(withErrno('EINVAL', 'Mount point is already in use: ' + mountPoint)); fs._mountPoint = mountPoint; - mounts.set(mountPoint, fs); + $$.mounts.set(mountPoint, fs); info(`Mounted ${fs.name} on ${mountPoint}`); debug(`${fs.name} attributes: ${[...fs.attributes].map(([k, v]) => (v !== undefined && v !== null ? k + '=' + v : k)).join(', ')}`); } @@ -52,15 +43,15 @@ export function mount(this: V_Context, mountPoint: string, fs: FileSystem): void * @category Backends and Configuration */ export function umount(this: V_Context, mountPoint: string): void { + const $$: FSContext = getContext(this); if (mountPoint[0] != '/') mountPoint = '/' + mountPoint; - - mountPoint = resolve.call(this, mountPoint); - if (!mounts.has(mountPoint)) { + mountPoint = resolve.call($$, mountPoint); + if (!$$.mounts.has(mountPoint)) { warn(mountPoint + ' is already unmounted'); return; } - mounts.delete(mountPoint); + $$.mounts.delete(mountPoint); notice('Unmounted ' + mountPoint); } @@ -88,10 +79,10 @@ export interface ResolvedPath extends ResolvedMount { * Gets the internal `FileSystem` for the path, then returns it along with the path relative to the FS' root * @internal @hidden */ -export function resolveMount(path: string, ctx: V_Context): ResolvedMount { - const root = ctx?.root || defaultContext.root; - path = normalizePath(join(root, path)); - const sortedMounts = [...mounts].sort((a, b) => (a[0].length > b[0].length ? -1 : 1)); // descending order of the string length +export function resolveMount(path: string, $: V_Context): ResolvedMount { + const $$: FSContext = getContext($); + path = normalizePath.call($$, join($$.root, path)); + const sortedMounts = [...$$.mounts].sort((a, b) => (a[0].length > b[0].length ? -1 : 1)); // descending order of the string length for (const [mountPoint, fs] of sortedMounts) { // We know path is normalized, so it would be a substring of the mount point. if (!_isParentOf(mountPoint, path)) continue; @@ -101,7 +92,7 @@ export function resolveMount(path: string, ctx: V_Context): ResolvedMount { if (case_fold === 'lower') path = path.toLowerCase(); if (case_fold === 'upper') path = path.toUpperCase(); - return { fs, path, mountPoint, root }; + return { fs, path, mountPoint, root: $$.root }; } throw alert(new Exception(Errno.EIO, 'No file system for ' + path)); @@ -130,21 +121,21 @@ export function _statfs(fs: FileSystem, bigint?: T): T * @category Backends and Configuration */ export function chroot(this: V_Context, path: string) { - const $ = this ?? defaultContext; - if (!credentialsAllowRoot($.credentials)) throw withErrno('EPERM', 'Can not chroot() as non-root user'); + const $$: FSContext = getContext(this); + if (!credentialsAllowRoot($$.credentials)) throw withErrno('EPERM', 'Can not chroot() as non-root user'); - $.root ??= '/'; + $$.root ??= '/'; - const newRoot = join($.root, path); + const newRoot = join($$.root, path); - for (const handle of $.descriptors?.values() ?? []) { - if (!handle.path.startsWith($.root)) throw UV('EBUSY', 'chroot', handle.path); - (handle as any).path = handle.path.slice($.root.length); + for (const handle of $$.descriptors?.values() ?? []) { + if (!handle.path.startsWith($$.root)) throw UV('EBUSY', 'chroot', handle.path); + (handle as any).path = handle.path.slice($$.root.length); } - if (newRoot.length > $.root.length) throw withErrno('EPERM', 'Can not chroot() outside of current root'); + if (newRoot.length > $$.root.length) throw withErrno('EPERM', 'Can not chroot() outside of current root'); - $.root = newRoot; + $$.root = newRoot; } /** diff --git a/src/vfs/stats.ts b/src/vfs/stats.ts index 65f8be11..8f98ae03 100644 --- a/src/vfs/stats.ts +++ b/src/vfs/stats.ts @@ -1,7 +1,7 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import type * as Node from 'node:fs'; import { pick } from 'utilium'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import type { InodeFields } from '../internal/inode.js'; import { _inode_fields, hasAccess } from '../internal/inode.js'; import * as c from './constants.js'; diff --git a/src/vfs/sync.ts b/src/vfs/sync.ts index 989e5ff2..e7e51623 100644 --- a/src/vfs/sync.ts +++ b/src/vfs/sync.ts @@ -1,14 +1,14 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import type * as fs from 'node:fs'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import type { InodeLike } from '../internal/inode.js'; import type { ResolvedPath } from './shared.js'; import type { FileContents, GlobOptionsU, OpenOptions, ReaddirOptions } from './types.js'; -import { Buffer } from 'buffer'; +import { Buffer } from 'node:buffer'; import { Errno, Exception, setUVMessage, UV } from 'kerium'; import { encodeUTF8 } from 'utilium'; -import { defaultContext } from '../internal/contexts.js'; +import { getContext } from '../internal/contexts.js'; import { wrap } from '../internal/error.js'; import { hasAccess, isDirectory, isSymbolicLink } from '../internal/inode.js'; import { basename, dirname, join, matchesGlob, parse, resolve } from '../path.js'; @@ -23,9 +23,9 @@ import { BigIntStats, Stats } from './stats.js'; import { emitChange } from './watchers.js'; export function renameSync(this: V_Context, oldPath: fs.PathLike, newPath: fs.PathLike): void { - oldPath = normalizePath(oldPath); + oldPath = normalizePath.call(this, oldPath); __assertType(oldPath); - newPath = normalizePath(newPath); + newPath = normalizePath.call(this, newPath); __assertType(newPath); const src = resolveMount(oldPath, this); const dst = resolveMount(newPath, this); @@ -66,7 +66,7 @@ renameSync satisfies typeof fs.renameSync; * Test whether or not `path` exists by checking with the file system. */ export function existsSync(this: V_Context, path: fs.PathLike): boolean { - path = normalizePath(path); + path = normalizePath.call(this, path); try { const { fs, path: resolvedPath } = resolveMount(realpathSync.call(this, path), this); return fs.existsSync(resolvedPath); @@ -81,7 +81,7 @@ existsSync satisfies typeof fs.existsSync; export function statSync(this: V_Context, path: fs.PathLike, options?: { bigint?: boolean }): Stats; export function statSync(this: V_Context, path: fs.PathLike, options: { bigint: true }): BigIntStats; export function statSync(this: V_Context, path: fs.PathLike, options?: fs.StatOptions): Stats | BigIntStats { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(realpathSync.call(this, path), this); let stats: InodeLike; @@ -105,7 +105,7 @@ statSync satisfies fs.StatSyncFn; export function lstatSync(this: V_Context, path: fs.PathLike, options?: { bigint?: boolean }): Stats; export function lstatSync(this: V_Context, path: fs.PathLike, options: { bigint: true }): BigIntStats; export function lstatSync(this: V_Context, path: fs.PathLike, options?: fs.StatOptions): Stats | BigIntStats { - path = normalizePath(path); + path = normalizePath.call(this, path); const real = join(realpathSync.call(this, dirname(path)), basename(path)); const { fs, path: resolved } = resolveMount(real, this); const stats = wrap(fs, 'statSync', path)(resolved); @@ -124,7 +124,7 @@ export function truncateSync(this: V_Context, path: fs.PathLike, len: number | n truncateSync satisfies typeof fs.truncateSync; export function unlinkSync(this: V_Context, path: fs.PathLike): void { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); try { if (checkAccess && !hasAccess(this, fs.statSync(resolved), constants.W_OK)) { @@ -139,7 +139,7 @@ export function unlinkSync(this: V_Context, path: fs.PathLike): void { unlinkSync satisfies typeof fs.unlinkSync; function _openSync(this: V_Context, path: fs.PathLike, opt: OpenOptions): SyncHandle { - path = normalizePath(path); + path = normalizePath.call(this, path); const mode = normalizeMode(opt.mode, 0o644), flag = flags.parse(opt.flag); @@ -173,7 +173,7 @@ function _openSync(this: V_Context, path: fs.PathLike, opt: OpenOptions): SyncHa throw UV('EACCES', 'open', path); } - const { euid: uid, egid: gid } = this?.credentials ?? defaultContext.credentials; + const { euid: uid, egid: gid } = getContext(this).credentials; const inode = fs.createFileSync(resolved, { mode, uid: parentStats.mode & constants.S_ISUID ? parentStats.uid : uid, @@ -463,7 +463,7 @@ export function futimesSync(this: V_Context, fd: number, atime: string | number futimesSync satisfies typeof fs.futimesSync; export function rmdirSync(this: V_Context, path: fs.PathLike): void { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(realpathSync.call(this, path), this); const stats = wrap(fs, 'statSync', path)(resolved); @@ -482,7 +482,7 @@ export function mkdirSync(this: V_Context, path: fs.PathLike, options: fs.MakeDi export function mkdirSync(this: V_Context, path: fs.PathLike, options?: fs.Mode | (fs.MakeDirectoryOptions & { recursive?: false }) | null): void; export function mkdirSync(this: V_Context, path: fs.PathLike, options?: fs.Mode | fs.MakeDirectoryOptions | null): string | undefined; export function mkdirSync(this: V_Context, path: fs.PathLike, options?: fs.Mode | fs.MakeDirectoryOptions | null): string | undefined | void { - const { euid: uid, egid: gid } = this?.credentials ?? defaultContext.credentials; + const { euid: uid, egid: gid } = getContext(this).credentials; options = typeof options === 'object' ? options : { mode: options }; const mode = normalizeMode(options?.mode, 0o777); @@ -555,7 +555,7 @@ export function readdirSync( export function readdirSync(this: V_Context, path: fs.PathLike, options?: ReaddirOptions): string[] | Dirent[] | Buffer[]; export function readdirSync(this: V_Context, path: fs.PathLike, options?: ReaddirOptions): string[] | Dirent[] | Buffer[] { options = typeof options === 'object' ? options : { encoding: options }; - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(realpathSync.call(this, path), this); const stats = wrap(fs, 'statSync', path)(resolved); @@ -597,11 +597,11 @@ export function readdirSync(this: V_Context, path: fs.PathLike, options?: Readdi readdirSync satisfies typeof fs.readdirSync; export function linkSync(this: V_Context, targetPath: fs.PathLike, linkPath: fs.PathLike): void { - targetPath = normalizePath(targetPath); + targetPath = normalizePath.call(this, targetPath); if (checkAccess && !statSync(dirname(targetPath)).hasAccess(constants.R_OK, this)) { throw UV('EACCES', 'link', dirname(targetPath)); } - linkPath = normalizePath(linkPath); + linkPath = normalizePath.call(this, linkPath); if (checkAccess && !statSync(dirname(linkPath)).hasAccess(constants.W_OK, this)) { throw UV('EACCES', 'link', dirname(linkPath)); } @@ -626,7 +626,7 @@ linkSync satisfies typeof fs.linkSync; export function symlinkSync(this: V_Context, target: fs.PathLike, path: fs.PathLike, type: fs.symlink.Type | null = 'file'): void { if (!['file', 'dir', 'junction'].includes(type!)) throw new TypeError('Invalid symlink type: ' + type); - path = normalizePath(path); + path = normalizePath.call(this, path); using file = _openSync.call(this, path, { flag: 'wx', mode: 0o644 }); file.write(encodeUTF8(normalizePath(target, true))); @@ -646,7 +646,7 @@ export function readlinkSync( path: fs.PathLike, options?: fs.EncodingOption | BufferEncoding | fs.BufferEncodingOption ): Buffer | string { - using handle = _openSync.call(this, normalizePath(path), { flag: 'r', mode: 0o644, preserveSymlinks: true }); + using handle = _openSync.call(this, normalizePath.call(this, path), { flag: 'r', mode: 0o644, preserveSymlinks: true }); if (!isSymbolicLink(handle.inode)) throw new Exception(Errno.EINVAL, 'Not a symbolic link: ' + path); const size = handle.inode.size; const data = Buffer.alloc(size); @@ -764,7 +764,7 @@ export function realpathSync(this: V_Context, path: fs.PathLike, options: fs.Buf export function realpathSync(this: V_Context, path: fs.PathLike, options?: fs.EncodingOption): string; export function realpathSync(this: V_Context, path: fs.PathLike, options?: fs.EncodingOption | fs.BufferEncodingOption): string | Buffer { const encoding = typeof options == 'string' ? options : (options?.encoding ?? 'utf8'); - path = normalizePath(path); + path = normalizePath.call(this, path); const { fullPath } = _resolveSync(this, path); if (encoding == 'utf8' || encoding == 'utf-8') return fullPath; @@ -787,7 +787,7 @@ accessSync satisfies typeof fs.accessSync; * @param path The path to the file or directory to remove. */ export function rmSync(this: V_Context, path: fs.PathLike, options?: fs.RmOptions): void { - path = normalizePath(path); + path = normalizePath.call(this, path); let stats: InodeLike | undefined; try { @@ -871,8 +871,8 @@ export function mkdtempDisposableSync( * - `fs.constants.COPYFILE_EXCL`: If the destination file already exists, the operation fails. */ export function copyFileSync(this: V_Context, source: fs.PathLike, destination: fs.PathLike, flags?: number): void { - source = normalizePath(source); - destination = normalizePath(destination); + source = normalizePath.call(this, source); + destination = normalizePath.call(this, destination); if (flags && flags & constants.COPYFILE_EXCL && existsSync(destination)) throw UV('EEXIST', 'copyFile', destination); @@ -927,7 +927,7 @@ writevSync satisfies typeof fs.writevSync; * @todo Handle options */ export function opendirSync(this: V_Context, path: fs.PathLike, options?: fs.OpenDirOptions): Dir { - path = normalizePath(path); + path = normalizePath.call(this, path); return new Dir(path, this); } opendirSync satisfies typeof fs.opendirSync; @@ -945,8 +945,8 @@ opendirSync satisfies typeof fs.opendirSync; * - `recursive`: If `true`, copies directories recursively. */ export function cpSync(this: V_Context, source: fs.PathLike, destination: fs.PathLike, opts?: fs.CopySyncOptions): void { - source = normalizePath(source); - destination = normalizePath(destination); + source = normalizePath.call(this, source); + destination = normalizePath.call(this, destination); const srcStats = lstatSync.call, Stats>(this, source); // Use lstat to follow symlinks if not dereferencing @@ -991,7 +991,7 @@ export function statfsSync(this: V_Context, path: fs.PathLike, options?: fs.Stat export function statfsSync(this: V_Context, path: fs.PathLike, options: fs.StatFsOptions & { bigint: true }): fs.BigIntStatsFs; export function statfsSync(this: V_Context, path: fs.PathLike, options?: fs.StatFsOptions): fs.StatsFs | fs.BigIntStatsFs; export function statfsSync(this: V_Context, path: fs.PathLike, options?: fs.StatFsOptions): fs.StatsFs | fs.BigIntStatsFs { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs } = resolveMount(path, this); return _statfs(fs, options?.bigint); } diff --git a/src/vfs/watchers.ts b/src/vfs/watchers.ts index 83c0d576..ce98b297 100644 --- a/src/vfs/watchers.ts +++ b/src/vfs/watchers.ts @@ -1,7 +1,7 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import type { EventEmitter as NodeEventEmitter } from 'node:events'; import type * as fs from 'node:fs'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import { EventEmitter } from 'eventemitter3'; import { UV } from 'kerium'; @@ -89,13 +89,12 @@ export class FSWatcher super(context, path); this.realpath = context?.root ? join(context.root, path) : path; - - addWatcher(this.realpath, this); + addWatcher.call(context, this.realpath, this); } public close(): void { super.emit('close'); - removeWatcher(this.realpath, this); + removeWatcher.call(this._context, this.realpath, this); } public [Symbol.dispose](): void { @@ -168,16 +167,16 @@ export class StatWatcher const watchers: Map> = new Map(); -export function addWatcher(path: string, watcher: FSWatcher) { - const normalizedPath = normalizePath(path); +export function addWatcher(this: V_Context, path: string, watcher: FSWatcher) { + const normalizedPath = normalizePath.call(this, path); if (!watchers.has(normalizedPath)) { watchers.set(normalizedPath, new Set()); } watchers.get(normalizedPath)!.add(watcher); } -export function removeWatcher(path: string, watcher: FSWatcher) { - const normalizedPath = normalizePath(path); +export function removeWatcher(this: V_Context, path: string, watcher: FSWatcher) { + const normalizedPath = normalizePath.call(this, path); if (watchers.has(normalizedPath)) { watchers.get(normalizedPath)!.delete(watcher); if (watchers.get(normalizedPath)!.size === 0) { @@ -191,7 +190,7 @@ export function removeWatcher(path: string, watcher: FSWatcher) { */ export function emitChange($: V_Context, eventType: fs.WatchEventType, filename: string) { if ($) filename = join($.root ?? '/', filename); - filename = normalizePath(filename); + filename = normalizePath.call($, filename); // Notify watchers, including ones on parent directories if they are watching recursively for (let path = filename; path != '/'; path = dirname(path)) { diff --git a/src/vfs/xattr.ts b/src/vfs/xattr.ts index ae96e85b..5886f14d 100644 --- a/src/vfs/xattr.ts +++ b/src/vfs/xattr.ts @@ -2,7 +2,7 @@ import { Buffer } from 'buffer'; import { rethrow, setUVMessage, UV } from 'kerium'; import type { BufferEncodingOption, ObjectEncodingOptions } from 'node:fs'; -import type { V_Context } from '../context.js'; +import type { V_Context } from '../internal/contexts.js'; import type { InodeLike } from '../internal/inode.js'; import { Attributes, hasAccess } from '../internal/inode.js'; import { normalizePath } from '../utils.js'; @@ -86,7 +86,7 @@ export async function get( ): Promise; export async function get(this: V_Context, path: string, name: Name, opt: Options & ObjectEncodingOptions): Promise; export async function get(this: V_Context, path: string, name: Name, opt: Options = {}): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); checkName(this, name, path, 'xattr.get'); @@ -115,7 +115,7 @@ export async function get(this: V_Context, path: string, name: Name, opt: Option export function getSync(this: V_Context, path: string, name: Name, opt?: Options & (BufferEncodingOption | { encoding?: null })): Uint8Array; export function getSync(this: V_Context, path: string, name: Name, opt: Options & ObjectEncodingOptions): string; export function getSync(this: V_Context, path: string, name: Name, opt: Options = {}): string | Uint8Array { - path = normalizePath(path); + path = normalizePath.call(this, path); checkName(this, name, path, 'xattr.get'); const { fs, path: resolved } = resolveMount(path, this); @@ -147,7 +147,7 @@ export function getSync(this: V_Context, path: string, name: Name, opt: Options * @param opt Options for the operation */ export async function set(this: V_Context, path: string, name: Name, value: string | Uint8Array, opt: SetOptions = {}): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); checkName(this, name, path, 'xattr.set'); @@ -177,7 +177,7 @@ export async function set(this: V_Context, path: string, name: Name, value: stri * @param opt Options for the operation */ export function setSync(this: V_Context, path: string, name: Name, value: string | Uint8Array, opt: SetOptions = {}): void { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); checkName(this, name, path, 'xattr.set'); @@ -215,7 +215,7 @@ export function setSync(this: V_Context, path: string, name: Name, value: string * @param name Name of the attribute to remove */ export async function remove(this: V_Context, path: string, name: Name): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); checkName(this, name, path, 'xattr.remove'); @@ -240,7 +240,7 @@ export async function remove(this: V_Context, path: string, name: Name): Promise * @param name Name of the attribute to remove */ export function removeSync(this: V_Context, path: string, name: Name): void { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); checkName(this, name, path, 'xattr.remove'); @@ -274,7 +274,7 @@ export function removeSync(this: V_Context, path: string, name: Name): void { * @returns Array of attribute names */ export async function list(this: V_Context, path: string): Promise { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); const inode = await fs.stat(resolved).catch(rethrow('xattr.list', path)); @@ -291,7 +291,7 @@ export async function list(this: V_Context, path: string): Promise { * @returns Array of attribute names */ export function listSync(this: V_Context, path: string): Name[] { - path = normalizePath(path); + path = normalizePath.call(this, path); const { fs, path: resolved } = resolveMount(path, this); let inode: InodeLike; diff --git a/tests/common/context.test.ts b/tests/common/context.test.ts index 4c78c5e0..dc4d9446 100644 --- a/tests/common/context.test.ts +++ b/tests/common/context.test.ts @@ -2,25 +2,25 @@ import assert from 'node:assert/strict'; import { suite, test } from 'node:test'; import { canary } from 'utilium'; -import { bindContext } from '../../dist/context.js'; +import { context } from '../../dist/context.js'; import * as fs from '../../dist/vfs/index.js'; import { configure, InMemory } from '../../dist/index.js'; fs.mkdirSync('/ctx'); -const { fs: ctx } = bindContext({ root: '/ctx' }); +const childContext = context.createChildContext({ root: '/ctx' }); suite('Context', () => { test('create a file', () => { - ctx.writeFileSync('/example.txt', 'not in real root!'); + childContext.fs.writeFileSync('/example.txt', 'not in real root!'); assert.deepEqual(fs.readdirSync('/'), ['ctx']); assert(fs.readdirSync('/ctx').includes('example.txt')); }); test('linking', async () => { - await ctx.promises.symlink('/example.txt', '/link'); - assert.equal(await ctx.promises.readlink('link', 'utf8'), '/example.txt'); + await childContext.fs.promises.symlink('/example.txt', '/link'); + assert.equal(await childContext.fs.promises.readlink('link', 'utf8'), '/example.txt'); assert.equal(await fs.promises.readlink('/ctx/link'), '/example.txt'); - assert.deepEqual(await ctx.promises.readFile('/link', 'utf-8'), await fs.promises.readFile('/ctx/example.txt', 'utf-8')); + assert.deepEqual(await childContext.fs.promises.readFile('/link', 'utf-8'), await fs.promises.readFile('/ctx/example.txt', 'utf-8')); // The symlink should only work inside the chroot /ctx assert.throws(() => fs.readFileSync('/ctx/link')); @@ -28,22 +28,22 @@ suite('Context', () => { test('path resolution', async () => { // Correct/normal - assert.equal(ctx.realpathSync('/'), '/'); - assert.equal(ctx.realpathSync('example.txt'), '/example.txt'); - assert.equal(ctx.realpathSync('../link'), '/example.txt'); - assert.equal(await ctx.promises.realpath('/../link'), '/example.txt'); + assert.equal(childContext.fs.realpathSync('/'), '/'); + assert.equal(childContext.fs.realpathSync('example.txt'), '/example.txt'); + assert.equal(childContext.fs.realpathSync('../link'), '/example.txt'); + assert.equal(await childContext.fs.promises.realpath('/../link'), '/example.txt'); assert.equal(fs.realpathSync('/ctx/link'), '/example.txt'); }); test('break-out fails', () => { - assert.notDeepEqual(ctx.readdirSync('/../../../'), ['ctx']); + assert.notDeepEqual(childContext.fs.readdirSync('/../../../'), ['ctx']); }); test('watch should consider context', async () => { let lastFile: string | null = null, events = 0; - const watcher = ctx.promises.watch('/', { recursive: true }); + const watcher = childContext.fs.promises.watch('/', { recursive: true }); const silence = canary(); const promise = (async () => { @@ -53,9 +53,9 @@ suite('Context', () => { } })(); silence(); - await ctx.promises.writeFile('/xpto.txt', 'in real root'); + await childContext.fs.promises.writeFile('/xpto.txt', 'in real root'); assert.equal(lastFile, 'xpto.txt'); - await ctx.promises.unlink('/xpto.txt'); + await childContext.fs.promises.unlink('/xpto.txt'); assert.equal(lastFile, 'xpto.txt'); await watcher.return!(); await promise; @@ -67,10 +67,20 @@ suite('Context', () => { mounts: { '/bananas': InMemory }, }); - const bananas = bindContext({ root: '/bananas' }); + const bananas = context.createChildContext({ root: '/bananas' }); fs.writeFileSync('/bananas/yellow', 'true'); assert.deepEqual(bananas.fs.readdirSync('/'), ['yellow']); }); + + test('Two isolated file trees writing to same file path', async () => { + var { fs: fs1 } = context.createChildContext({ root: '/', mounts: new Map([['/', InMemory.create({ label: 'root' })]]) }); + var { fs: fs2 } = context.createChildContext({ root: '/', mounts: new Map([['/', InMemory.create({ label: 'root' })]]) }); + + fs1.writeFileSync('/example.txt', 'fs1'); + fs2.writeFileSync('/example.txt', 'fs2'); + assert.equal(fs1.readFileSync('/example.txt', 'utf8'), 'fs1'); + assert.throws(() => fs.readFileSync('/example.txt', 'utf8')); + }); }); diff --git a/tests/fs/directory.test.ts b/tests/fs/directory.test.ts index 0d44fa2b..137a4860 100644 --- a/tests/fs/directory.test.ts +++ b/tests/fs/directory.test.ts @@ -29,7 +29,15 @@ suite('Directories', () => { test('mkdirSync', async () => await fs.promises.mkdir('/two', 0o000)); test('mkdir, nested', async () => { - await assert.rejects(fs.promises.mkdir('/nested/dir'), { code: 'ENOENT', path: '/nested' }); + try { + // for normal tests + await assert.rejects(fs.promises.mkdir('/nested/dir'), { code: 'ENOENT', path: '/nested' }); + } catch (e) { + // FIXME: talk to @james-pre about this -- Jeff + // unclear to me if this is correct behavior when this is run in an isolated context + // e.g. run: npx zenfs-test tests/setup/context.ts --verbose --exit-on-fail + await assert.rejects(fs.promises.mkdir('/nested/dir'), { code: 'ENOENT', path: '/new_root/nested' }); + } assert(!(await fs.promises.exists('/nested/dir'))); }); diff --git a/tests/fs/permissions.test.ts b/tests/fs/permissions.test.ts index 718d1310..a4df59a0 100644 --- a/tests/fs/permissions.test.ts +++ b/tests/fs/permissions.test.ts @@ -3,7 +3,7 @@ import { Exception } from 'kerium'; import assert from 'node:assert/strict'; import { suite, test } from 'node:test'; import { encodeUTF8 } from 'utilium'; -import { defaultContext } from '../../dist/internal/contexts.js'; +import { context } from '../../dist/context.js'; import { join } from '../../dist/path.js'; import { R_OK, W_OK, X_OK } from '../../dist/vfs/constants.js'; import { fs } from '../common.js'; @@ -84,8 +84,8 @@ suite('Permissions', () => { assert(stats.hasAccess(W_OK)); } - const copy = { ...defaultContext.credentials }; - Object.assign(defaultContext.credentials, { uid: 1000, gid: 1000, euid: 1000, egid: 1000 }); + const copy = { ...context.credentials }; + Object.assign(context.credentials, { uid: 1000, gid: 1000, euid: 1000, egid: 1000 }); test('Access controls: /', () => test_item('/')); - Object.assign(defaultContext.credentials, copy); + Object.assign(context.credentials, copy); }); diff --git a/tests/fs/stat.test.ts b/tests/fs/stat.test.ts index 35de56a4..f590c6cb 100644 --- a/tests/fs/stat.test.ts +++ b/tests/fs/stat.test.ts @@ -1,7 +1,7 @@ // SPDX-License-Identifier: LGPL-3.0-or-later import assert from 'node:assert/strict'; import { suite, test } from 'node:test'; -import { defaultContext } from '../../dist/internal/contexts.js'; +import { context } from '../../dist/context.js'; import { Stats } from '../../dist/vfs/stats.js'; import { fs } from '../common.js'; @@ -41,7 +41,7 @@ suite('Stats', () => { fs.writeFileSync(newFile, 'hello', { mode: 0o640 }); - const prevCredentials = { ...defaultContext.credentials }; + const prevCredentials = { ...context.credentials }; const uid = 33; const nonRootCredentials = { uid, @@ -54,7 +54,7 @@ suite('Stats', () => { fs.chownSync(newFile, 0, nonRootCredentials.gid); // creating with root-user so that non-root user can access - Object.assign(defaultContext.credentials, nonRootCredentials); + Object.assign(context.credentials, nonRootCredentials); const stat = fs.statSync(newFile); assert.equal(stat.gid, nonRootCredentials.gid); @@ -64,13 +64,13 @@ suite('Stats', () => { assert.equal(stat.hasAccess(fs.constants.X_OK), false); // changing group - Object.assign(defaultContext.credentials, { ...nonRootCredentials, gid: 44 }); + Object.assign(context.credentials, { ...nonRootCredentials, gid: 44 }); assert.equal(stat.hasAccess(fs.constants.R_OK), false); assert.equal(stat.hasAccess(fs.constants.W_OK), false); assert.equal(stat.hasAccess(fs.constants.X_OK), false); - Object.assign(defaultContext.credentials, prevCredentials); + Object.assign(context.credentials, prevCredentials); }); test('stat file', async () => { diff --git a/tests/setup/context.ts b/tests/setup/context.ts index ddabe33d..4e884b87 100644 --- a/tests/setup/context.ts +++ b/tests/setup/context.ts @@ -1,9 +1,9 @@ -import { bindContext } from '../../dist/context.js'; +import { context } from '../../dist/context.js'; import { fs as _fs } from '../../dist/index.js'; import { copySync, data } from '../setup.js'; _fs.mkdirSync('/new_root'); -export const { fs } = bindContext({ root: '/new_root' }); +export const { fs } = context.createChildContext({ root: '/new_root' }); copySync(data, fs);