diff options
Diffstat (limited to 'std/wasi/snapshot_preview1.ts')
| -rw-r--r-- | std/wasi/snapshot_preview1.ts | 1739 |
1 files changed, 0 insertions, 1739 deletions
diff --git a/std/wasi/snapshot_preview1.ts b/std/wasi/snapshot_preview1.ts deleted file mode 100644 index 9a1796e2e..000000000 --- a/std/wasi/snapshot_preview1.ts +++ /dev/null @@ -1,1739 +0,0 @@ -// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license. - -import { relative, resolve } from "../path/mod.ts"; - -const CLOCKID_REALTIME = 0; -const CLOCKID_MONOTONIC = 1; -const CLOCKID_PROCESS_CPUTIME_ID = 2; -const CLOCKID_THREAD_CPUTIME_ID = 3; - -const ERRNO_SUCCESS = 0; -const _ERRNO_2BIG = 1; -const ERRNO_ACCES = 2; -const ERRNO_ADDRINUSE = 3; -const ERRNO_ADDRNOTAVAIL = 4; -const _ERRNO_AFNOSUPPORT = 5; -const _ERRNO_AGAIN = 6; -const _ERRNO_ALREADY = 7; -const ERRNO_BADF = 8; -const _ERRNO_BADMSG = 9; -const ERRNO_BUSY = 10; -const _ERRNO_CANCELED = 11; -const _ERRNO_CHILD = 12; -const ERRNO_CONNABORTED = 13; -const ERRNO_CONNREFUSED = 14; -const ERRNO_CONNRESET = 15; -const _ERRNO_DEADLK = 16; -const _ERRNO_DESTADDRREQ = 17; -const _ERRNO_DOM = 18; -const _ERRNO_DQUOT = 19; -const _ERRNO_EXIST = 20; -const _ERRNO_FAULT = 21; -const _ERRNO_FBIG = 22; -const _ERRNO_HOSTUNREACH = 23; -const _ERRNO_IDRM = 24; -const _ERRNO_ILSEQ = 25; -const _ERRNO_INPROGRESS = 26; -const ERRNO_INTR = 27; -const ERRNO_INVAL = 28; -const _ERRNO_IO = 29; -const _ERRNO_ISCONN = 30; -const _ERRNO_ISDIR = 31; -const _ERRNO_LOOP = 32; -const _ERRNO_MFILE = 33; -const _ERRNO_MLINK = 34; -const _ERRNO_MSGSIZE = 35; -const _ERRNO_MULTIHOP = 36; -const _ERRNO_NAMETOOLONG = 37; -const _ERRNO_NETDOWN = 38; -const _ERRNO_NETRESET = 39; -const _ERRNO_NETUNREACH = 40; -const _ERRNO_NFILE = 41; -const _ERRNO_NOBUFS = 42; -const _ERRNO_NODEV = 43; -const ERRNO_NOENT = 44; -const _ERRNO_NOEXEC = 45; -const _ERRNO_NOLCK = 46; -const _ERRNO_NOLINK = 47; -const _ERRNO_NOMEM = 48; -const _ERRNO_NOMSG = 49; -const _ERRNO_NOPROTOOPT = 50; -const _ERRNO_NOSPC = 51; -const ERRNO_NOSYS = 52; -const ERRNO_NOTCONN = 53; -const ERRNO_NOTDIR = 54; -const _ERRNO_NOTEMPTY = 55; -const _ERRNO_NOTRECOVERABLE = 56; -const _ERRNO_NOTSOCK = 57; -const _ERRNO_NOTSUP = 58; -const _ERRNO_NOTTY = 59; -const _ERRNO_NXIO = 60; -const _ERRNO_OVERFLOW = 61; -const _ERRNO_OWNERDEAD = 62; -const _ERRNO_PERM = 63; -const ERRNO_PIPE = 64; -const _ERRNO_PROTO = 65; -const _ERRNO_PROTONOSUPPORT = 66; -const _ERRNO_PROTOTYPE = 67; -const _ERRNO_RANGE = 68; -const _ERRNO_ROFS = 69; -const _ERRNO_SPIPE = 70; -const _ERRNO_SRCH = 71; -const _ERRNO_STALE = 72; -const ERRNO_TIMEDOUT = 73; -const _ERRNO_TXTBSY = 74; -const _ERRNO_XDEV = 75; -const ERRNO_NOTCAPABLE = 76; - -const RIGHTS_FD_DATASYNC = 0x0000000000000001n; -const RIGHTS_FD_READ = 0x0000000000000002n; -const _RIGHTS_FD_SEEK = 0x0000000000000004n; -const _RIGHTS_FD_FDSTAT_SET_FLAGS = 0x0000000000000008n; -const _RIGHTS_FD_SYNC = 0x0000000000000010n; -const _RIGHTS_FD_TELL = 0x0000000000000020n; -const RIGHTS_FD_WRITE = 0x0000000000000040n; -const _RIGHTS_FD_ADVISE = 0x0000000000000080n; -const RIGHTS_FD_ALLOCATE = 0x0000000000000100n; -const _RIGHTS_PATH_CREATE_DIRECTORY = 0x0000000000000200n; -const _RIGHTS_PATH_CREATE_FILE = 0x0000000000000400n; -const _RIGHTS_PATH_LINK_SOURCE = 0x0000000000000800n; -const _RIGHTS_PATH_LINK_TARGET = 0x0000000000001000n; -const _RIGHTS_PATH_OPEN = 0x0000000000002000n; -const RIGHTS_FD_READDIR = 0x0000000000004000n; -const _RIGHTS_PATH_READLINK = 0x0000000000008000n; -const _RIGHTS_PATH_RENAME_SOURCE = 0x0000000000010000n; -const _RIGHTS_PATH_RENAME_TARGET = 0x0000000000020000n; -const _RIGHTS_PATH_FILESTAT_GET = 0x0000000000040000n; -const _RIGHTS_PATH_FILESTAT_SET_SIZE = 0x0000000000080000n; -const _RIGHTS_PATH_FILESTAT_SET_TIMES = 0x0000000000100000n; -const _RIGHTS_FD_FILESTAT_GET = 0x0000000000200000n; -const RIGHTS_FD_FILESTAT_SET_SIZE = 0x0000000000400000n; -const _RIGHTS_FD_FILESTAT_SET_TIMES = 0x0000000000800000n; -const _RIGHTS_PATH_SYMLINK = 0x0000000001000000n; -const _RIGHTS_PATH_REMOVE_DIRECTORY = 0x0000000002000000n; -const _RIGHTS_PATH_UNLINK_FILE = 0x0000000004000000n; -const _RIGHTS_POLL_FD_READWRITE = 0x0000000008000000n; -const _RIGHTS_SOCK_SHUTDOWN = 0x0000000010000000n; - -const _WHENCE_SET = 0; -const _WHENCE_CUR = 1; -const _WHENCE_END = 2; - -const FILETYPE_UNKNOWN = 0; -const _FILETYPE_BLOCK_DEVICE = 1; -const FILETYPE_CHARACTER_DEVICE = 2; -const FILETYPE_DIRECTORY = 3; -const FILETYPE_REGULAR_FILE = 4; -const _FILETYPE_SOCKET_DGRAM = 5; -const _FILETYPE_SOCKET_STREAM = 6; -const FILETYPE_SYMBOLIC_LINK = 7; - -const _ADVICE_NORMAL = 0; -const _ADVICE_SEQUENTIAL = 1; -const _ADVICE_RANDOM = 2; -const _ADVICE_WILLNEED = 3; -const _ADVICE_DONTNEED = 4; -const _ADVICE_NOREUSE = 5; - -const FDFLAGS_APPEND = 0x0001; -const FDFLAGS_DSYNC = 0x0002; -const FDFLAGS_NONBLOCK = 0x0004; -const FDFLAGS_RSYNC = 0x0008; -const FDFLAGS_SYNC = 0x0010; - -const _FSTFLAGS_ATIM = 0x0001; -const FSTFLAGS_ATIM_NOW = 0x0002; -const _FSTFLAGS_MTIM = 0x0004; -const FSTFLAGS_MTIM_NOW = 0x0008; - -const LOOKUPFLAGS_SYMLINK_FOLLOW = 0x0001; - -const OFLAGS_CREAT = 0x0001; -const OFLAGS_DIRECTORY = 0x0002; -const OFLAGS_EXCL = 0x0004; -const OFLAGS_TRUNC = 0x0008; - -const _EVENTTYPE_CLOCK = 0; -const _EVENTTYPE_FD_READ = 1; -const _EVENTTYPE_FD_WRITE = 2; - -const _EVENTRWFLAGS_FD_READWRITE_HANGUP = 1; -const _SUBCLOCKFLAGS_SUBSCRIPTION_CLOCK_ABSTIME = 1; - -const _SIGNAL_NONE = 0; -const _SIGNAL_HUP = 1; -const _SIGNAL_INT = 2; -const _SIGNAL_QUIT = 3; -const _SIGNAL_ILL = 4; -const _SIGNAL_TRAP = 5; -const _SIGNAL_ABRT = 6; -const _SIGNAL_BUS = 7; -const _SIGNAL_FPE = 8; -const _SIGNAL_KILL = 9; -const _SIGNAL_USR1 = 10; -const _SIGNAL_SEGV = 11; -const _SIGNAL_USR2 = 12; -const _SIGNAL_PIPE = 13; -const _SIGNAL_ALRM = 14; -const _SIGNAL_TERM = 15; -const _SIGNAL_CHLD = 16; -const _SIGNAL_CONT = 17; -const _SIGNAL_STOP = 18; -const _SIGNAL_TSTP = 19; -const _SIGNAL_TTIN = 20; -const _SIGNAL_TTOU = 21; -const _SIGNAL_URG = 22; -const _SIGNAL_XCPU = 23; -const _SIGNAL_XFSZ = 24; -const _SIGNAL_VTALRM = 25; -const _SIGNAL_PROF = 26; -const _SIGNAL_WINCH = 27; -const _SIGNAL_POLL = 28; -const _SIGNAL_PWR = 29; -const _SIGNAL_SYS = 30; - -const _RIFLAGS_RECV_PEEK = 0x0001; -const _RIFLAGS_RECV_WAITALL = 0x0002; - -const _ROFLAGS_RECV_DATA_TRUNCATED = 0x0001; - -const _SDFLAGS_RD = 0x0001; -const _SDFLAGS_WR = 0x0002; - -const PREOPENTYPE_DIR = 0; - -function syscall<T extends CallableFunction>(target: T) { - return function (...args: unknown[]) { - try { - return target(...args); - } catch (err) { - if (err instanceof ExitStatus) { - throw err; - } - - switch (err.name) { - case "NotFound": - return ERRNO_NOENT; - - case "PermissionDenied": - return ERRNO_ACCES; - - case "ConnectionRefused": - return ERRNO_CONNREFUSED; - - case "ConnectionReset": - return ERRNO_CONNRESET; - - case "ConnectionAborted": - return ERRNO_CONNABORTED; - - case "NotConnected": - return ERRNO_NOTCONN; - - case "AddrInUse": - return ERRNO_ADDRINUSE; - - case "AddrNotAvailable": - return ERRNO_ADDRNOTAVAIL; - - case "BrokenPipe": - return ERRNO_PIPE; - - case "InvalidData": - return ERRNO_INVAL; - - case "TimedOut": - return ERRNO_TIMEDOUT; - - case "Interrupted": - return ERRNO_INTR; - - case "BadResource": - return ERRNO_BADF; - - case "Busy": - return ERRNO_BUSY; - - default: - return ERRNO_INVAL; - } - } - }; -} - -interface FileDescriptor { - rid?: number; - type?: number; - flags?: number; - path?: string; - vpath?: string; - entries?: Deno.DirEntry[]; -} - -class ExitStatus { - code: number; - - constructor(code: number) { - this.code = code; - } -} - -export interface ContextOptions { - /** - * An array of strings that the WebAssembly instance will see as command-line - * arguments. - * - * The first argument is the virtual path to the command itself. - */ - args?: string[]; - - /** - * An object of string keys mapped to string values that the WebAssembly module will see as its environment. - */ - env?: { [key: string]: string | undefined }; - - /** - * An object of string keys mapped to string values that the WebAssembly module will see as it's filesystem. - * - * The string keys of are treated as directories within the sandboxed - * filesystem, the values are the real paths to those directories on the host - * machine. - * - */ - preopens?: { [key: string]: string }; - - /** - * Determines if calls to exit from within the WebAssembly module will terminate the proess or return. - */ - exitOnReturn?: boolean; - - /** - * The resource descriptor used as standard input in the WebAssembly module. - */ - stdin?: number; - - /** - * The resource descriptor used as standard output in the WebAssembly module. - */ - stdout?: number; - - /** - * The resource descriptor used as standard error in the WebAssembly module. - */ - stderr?: number; -} - -/** - * The Context class provides the environment required to run WebAssembly - * modules compiled to run with the WebAssembly System Interface. - * - * Each context represents a distinct sandboxed environment and must have its - * command-line arguments, environment variables, and pre-opened directory - * structure configured explicitly. - */ -export default class Context { - #args: string[]; - #env: { [key: string]: string | undefined }; - #exitOnReturn: boolean; - #memory: WebAssembly.Memory; - #fds: FileDescriptor[]; - #started: boolean; - - exports: Record<string, WebAssembly.ImportValue>; - - constructor(options: ContextOptions) { - this.#args = options.args ?? []; - this.#env = options.env ?? {}; - this.#exitOnReturn = options.exitOnReturn ?? true; - this.#memory = null!; - - this.#fds = [ - { - rid: options.stdin ?? Deno.stdin.rid, - type: FILETYPE_CHARACTER_DEVICE, - flags: FDFLAGS_APPEND, - }, - { - rid: options.stdout ?? Deno.stdout.rid, - type: FILETYPE_CHARACTER_DEVICE, - flags: FDFLAGS_APPEND, - }, - { - rid: options.stderr ?? Deno.stderr.rid, - type: FILETYPE_CHARACTER_DEVICE, - flags: FDFLAGS_APPEND, - }, - ]; - - if (options.preopens) { - for (const [vpath, path] of Object.entries(options.preopens)) { - const type = FILETYPE_DIRECTORY; - const entries = Array.from(Deno.readDirSync(path)); - - const entry = { - type, - entries, - path, - vpath, - }; - - this.#fds.push(entry); - } - } - - this.exports = { - "args_get": syscall(( - argvOffset: number, - argvBufferOffset: number, - ): number => { - const args = this.#args; - const textEncoder = new TextEncoder(); - const memoryData = new Uint8Array(this.#memory.buffer); - const memoryView = new DataView(this.#memory.buffer); - - for (const arg of args) { - memoryView.setUint32(argvOffset, argvBufferOffset, true); - argvOffset += 4; - - const data = textEncoder.encode(`${arg}\0`); - memoryData.set(data, argvBufferOffset); - argvBufferOffset += data.length; - } - - return ERRNO_SUCCESS; - }), - - "args_sizes_get": syscall(( - argcOffset: number, - argvBufferSizeOffset: number, - ): number => { - const args = this.#args; - const textEncoder = new TextEncoder(); - const memoryView = new DataView(this.#memory.buffer); - - memoryView.setUint32(argcOffset, args.length, true); - memoryView.setUint32( - argvBufferSizeOffset, - args.reduce(function (acc, arg) { - return acc + textEncoder.encode(`${arg}\0`).length; - }, 0), - true, - ); - - return ERRNO_SUCCESS; - }), - - "environ_get": syscall(( - environOffset: number, - environBufferOffset: number, - ): number => { - const entries = Object.entries(this.#env); - const textEncoder = new TextEncoder(); - const memoryData = new Uint8Array(this.#memory.buffer); - const memoryView = new DataView(this.#memory.buffer); - - for (const [key, value] of entries) { - memoryView.setUint32(environOffset, environBufferOffset, true); - environOffset += 4; - - const data = textEncoder.encode(`${key}=${value}\0`); - memoryData.set(data, environBufferOffset); - environBufferOffset += data.length; - } - - return ERRNO_SUCCESS; - }), - - "environ_sizes_get": syscall(( - environcOffset: number, - environBufferSizeOffset: number, - ): number => { - const entries = Object.entries(this.#env); - const textEncoder = new TextEncoder(); - const memoryView = new DataView(this.#memory.buffer); - - memoryView.setUint32(environcOffset, entries.length, true); - memoryView.setUint32( - environBufferSizeOffset, - entries.reduce(function (acc, [key, value]) { - return acc + textEncoder.encode(`${key}=${value}\0`).length; - }, 0), - true, - ); - - return ERRNO_SUCCESS; - }), - - "clock_res_get": syscall(( - id: number, - resolutionOffset: number, - ): number => { - const memoryView = new DataView(this.#memory.buffer); - - switch (id) { - case CLOCKID_REALTIME: { - const resolution = BigInt(1e6); - - memoryView.setBigUint64( - resolutionOffset, - resolution, - true, - ); - break; - } - - case CLOCKID_MONOTONIC: - case CLOCKID_PROCESS_CPUTIME_ID: - case CLOCKID_THREAD_CPUTIME_ID: { - const resolution = BigInt(1e3); - memoryView.setBigUint64(resolutionOffset, resolution, true); - break; - } - - default: - return ERRNO_INVAL; - } - - return ERRNO_SUCCESS; - }), - - "clock_time_get": syscall(( - id: number, - precision: bigint, - timeOffset: number, - ): number => { - const memoryView = new DataView(this.#memory.buffer); - - switch (id) { - case CLOCKID_REALTIME: { - const time = BigInt(Date.now()) * BigInt(1e6); - memoryView.setBigUint64(timeOffset, time, true); - break; - } - - case CLOCKID_MONOTONIC: - case CLOCKID_PROCESS_CPUTIME_ID: - case CLOCKID_THREAD_CPUTIME_ID: { - const t = performance.now(); - const s = Math.trunc(t); - const ms = Math.floor((t - s) * 1e3); - - const time = BigInt(s) * BigInt(1e9) + BigInt(ms) * BigInt(1e6); - - memoryView.setBigUint64(timeOffset, time, true); - break; - } - - default: - return ERRNO_INVAL; - } - - return ERRNO_SUCCESS; - }), - - "fd_advise": syscall(( - _fd: number, - _offset: bigint, - _length: bigint, - _advice: number, - ): number => { - return ERRNO_NOSYS; - }), - - "fd_allocate": syscall(( - _fd: number, - _offset: bigint, - _length: bigint, - ): number => { - return ERRNO_NOSYS; - }), - - "fd_close": syscall(( - fd: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (entry.rid) { - Deno.close(entry.rid); - } - - delete this.#fds[fd]; - - return ERRNO_SUCCESS; - }), - - "fd_datasync": syscall(( - fd: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - Deno.fdatasyncSync(entry.rid!); - - return ERRNO_SUCCESS; - }), - - "fd_fdstat_get": syscall(( - fd: number, - offset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - memoryView.setUint8(offset, entry.type!); - memoryView.setUint16(offset + 2, entry.flags!, true); - // TODO(bartlomieju) - memoryView.setBigUint64(offset + 8, 0n, true); - // TODO(bartlomieju) - memoryView.setBigUint64(offset + 16, 0n, true); - - return ERRNO_SUCCESS; - }), - - "fd_fdstat_set_flags": syscall(( - _fd: number, - _flags: number, - ): number => { - return ERRNO_NOSYS; - }), - - "fd_fdstat_set_rights": syscall(( - _fd: number, - _rightsBase: bigint, - _rightsInheriting: bigint, - ): number => { - return ERRNO_NOSYS; - }), - - "fd_filestat_get": syscall(( - fd: number, - offset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - - const info = Deno.fstatSync(entry.rid!); - - if (entry.type === undefined) { - switch (true) { - case info.isFile: - entry.type = FILETYPE_REGULAR_FILE; - break; - - case info.isDirectory: - entry.type = FILETYPE_DIRECTORY; - break; - - case info.isSymlink: - entry.type = FILETYPE_SYMBOLIC_LINK; - break; - - default: - entry.type = FILETYPE_UNKNOWN; - break; - } - } - - memoryView.setBigUint64(offset, BigInt(info.dev ? info.dev : 0), true); - offset += 8; - - memoryView.setBigUint64(offset, BigInt(info.ino ? info.ino : 0), true); - offset += 8; - - memoryView.setUint8(offset, entry.type); - offset += 8; - - memoryView.setUint32(offset, Number(info.nlink), true); - offset += 8; - - memoryView.setBigUint64(offset, BigInt(info.size), true); - offset += 8; - - memoryView.setBigUint64( - offset, - BigInt(info.atime ? info.atime.getTime() * 1e6 : 0), - true, - ); - offset += 8; - - memoryView.setBigUint64( - offset, - BigInt(info.mtime ? info.mtime.getTime() * 1e6 : 0), - true, - ); - offset += 8; - - memoryView.setBigUint64( - offset, - BigInt(info.birthtime ? info.birthtime.getTime() * 1e6 : 0), - true, - ); - offset += 8; - - return ERRNO_SUCCESS; - }), - - "fd_filestat_set_size": syscall(( - fd: number, - size: bigint, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - Deno.ftruncateSync(entry.rid!, Number(size)); - - return ERRNO_SUCCESS; - }), - - "fd_filestat_set_times": syscall(( - fd: number, - atim: bigint, - mtim: bigint, - flags: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - if ((flags & FSTFLAGS_ATIM_NOW) == FSTFLAGS_ATIM_NOW) { - atim = BigInt(Date.now() * 1e6); - } - - if ((flags & FSTFLAGS_MTIM_NOW) == FSTFLAGS_MTIM_NOW) { - mtim = BigInt(Date.now() * 1e6); - } - - Deno.utimeSync(entry.path!, Number(atim), Number(mtim)); - - return ERRNO_SUCCESS; - }), - - "fd_pread": syscall(( - fd: number, - iovsOffset: number, - iovsLength: number, - offset: bigint, - nreadOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (entry == null) { - return ERRNO_BADF; - } - - const seek = Deno.seekSync(entry.rid!, 0, Deno.SeekMode.Current); - const memoryView = new DataView(this.#memory.buffer); - - let nread = 0; - for (let i = 0; i < iovsLength; i++) { - const dataOffset = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const dataLength = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const data = new Uint8Array( - this.#memory.buffer, - dataOffset, - dataLength, - ); - nread += Deno.readSync(entry.rid!, data) as number; - } - - Deno.seekSync(entry.rid!, seek, Deno.SeekMode.Start); - memoryView.setUint32(nreadOffset, nread, true); - - return ERRNO_SUCCESS; - }), - - "fd_prestat_get": syscall(( - fd: number, - prestatOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.vpath) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - memoryView.setUint8(prestatOffset, PREOPENTYPE_DIR); - memoryView.setUint32( - prestatOffset + 4, - new TextEncoder().encode(entry.vpath).byteLength, - true, - ); - - return ERRNO_SUCCESS; - }), - - "fd_prestat_dir_name": syscall(( - fd: number, - pathOffset: number, - pathLength: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.vpath) { - return ERRNO_BADF; - } - - const data = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - data.set(new TextEncoder().encode(entry.vpath)); - - return ERRNO_SUCCESS; - }), - - "fd_pwrite": syscall(( - fd: number, - iovsOffset: number, - iovsLength: number, - offset: bigint, - nwrittenOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const seek = Deno.seekSync(entry.rid!, 0, Deno.SeekMode.Current); - const memoryView = new DataView(this.#memory.buffer); - - let nwritten = 0; - for (let i = 0; i < iovsLength; i++) { - const dataOffset = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const dataLength = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const data = new Uint8Array( - this.#memory.buffer, - dataOffset, - dataLength, - ); - nwritten += Deno.writeSync(entry.rid!, data) as number; - } - - Deno.seekSync(entry.rid!, seek, Deno.SeekMode.Start); - memoryView.setUint32(nwrittenOffset, nwritten, true); - - return ERRNO_SUCCESS; - }), - - "fd_read": syscall(( - fd: number, - iovsOffset: number, - iovsLength: number, - nreadOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - - let nread = 0; - for (let i = 0; i < iovsLength; i++) { - const dataOffset = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const dataLength = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const data = new Uint8Array( - this.#memory.buffer, - dataOffset, - dataLength, - ); - nread += Deno.readSync(entry.rid!, data) as number; - } - - memoryView.setUint32(nreadOffset, nread, true); - - return ERRNO_SUCCESS; - }), - - "fd_readdir": syscall(( - fd: number, - bufferOffset: number, - bufferLength: number, - cookie: bigint, - bufferUsedOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryData = new Uint8Array(this.#memory.buffer); - const memoryView = new DataView(this.#memory.buffer); - - let bufferUsed = 0; - - const entries = Array.from(Deno.readDirSync(entry.path!)); - for (let i = Number(cookie); i < entries.length; i++) { - const nameData = new TextEncoder().encode(entries[i].name); - - const entryInfo = Deno.statSync( - resolve(entry.path!, entries[i].name), - ); - const entryData = new Uint8Array(24 + nameData.byteLength); - const entryView = new DataView(entryData.buffer); - - entryView.setBigUint64(0, BigInt(i + 1), true); - entryView.setBigUint64( - 8, - BigInt(entryInfo.ino ? entryInfo.ino : 0), - true, - ); - entryView.setUint32(16, nameData.byteLength, true); - - let type: number; - switch (true) { - case entries[i].isFile: - type = FILETYPE_REGULAR_FILE; - break; - - case entries[i].isDirectory: - type = FILETYPE_REGULAR_FILE; - break; - - case entries[i].isSymlink: - type = FILETYPE_SYMBOLIC_LINK; - break; - - default: - type = FILETYPE_REGULAR_FILE; - break; - } - - entryView.setUint8(20, type); - entryData.set(nameData, 24); - - const data = entryData.slice( - 0, - Math.min(entryData.length, bufferLength - bufferUsed), - ); - memoryData.set(data, bufferOffset + bufferUsed); - bufferUsed += data.byteLength; - } - - memoryView.setUint32(bufferUsedOffset, bufferUsed, true); - - return ERRNO_SUCCESS; - }), - - "fd_renumber": syscall(( - fd: number, - to: number, - ): number => { - if (!this.#fds[fd]) { - return ERRNO_BADF; - } - - if (!this.#fds[to]) { - return ERRNO_BADF; - } - - if (this.#fds[to].rid) { - Deno.close(this.#fds[to].rid!); - } - - this.#fds[to] = this.#fds[fd]; - delete this.#fds[fd]; - - return ERRNO_SUCCESS; - }), - - "fd_seek": syscall(( - fd: number, - offset: bigint, - whence: number, - newOffsetOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - - // FIXME Deno does not support seeking with big integers - const newOffset = Deno.seekSync(entry.rid!, Number(offset), whence); - memoryView.setBigUint64(newOffsetOffset, BigInt(newOffset), true); - - return ERRNO_SUCCESS; - }), - - "fd_sync": syscall(( - fd: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - Deno.fsyncSync(entry.rid!); - - return ERRNO_SUCCESS; - }), - - "fd_tell": syscall(( - fd: number, - offsetOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - - const offset = Deno.seekSync(entry.rid!, 0, Deno.SeekMode.Current); - memoryView.setBigUint64(offsetOffset, BigInt(offset), true); - - return ERRNO_SUCCESS; - }), - - "fd_write": syscall(( - fd: number, - iovsOffset: number, - iovsLength: number, - nwrittenOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - const memoryView = new DataView(this.#memory.buffer); - - let nwritten = 0; - for (let i = 0; i < iovsLength; i++) { - const dataOffset = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const dataLength = memoryView.getUint32(iovsOffset, true); - iovsOffset += 4; - - const data = new Uint8Array( - this.#memory.buffer, - dataOffset, - dataLength, - ); - nwritten += Deno.writeSync(entry.rid!, data) as number; - } - - memoryView.setUint32(nwrittenOffset, nwritten, true); - - return ERRNO_SUCCESS; - }), - - "path_create_directory": syscall(( - fd: number, - pathOffset: number, - pathLength: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const data = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const path = resolve(entry.path!, textDecoder.decode(data)); - - Deno.mkdirSync(path); - - return ERRNO_SUCCESS; - }), - - "path_filestat_get": syscall(( - fd: number, - flags: number, - pathOffset: number, - pathLength: number, - bufferOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const data = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const path = resolve(entry.path!, textDecoder.decode(data)); - - const memoryView = new DataView(this.#memory.buffer); - - const info = (flags & LOOKUPFLAGS_SYMLINK_FOLLOW) != 0 - ? Deno.statSync(path) - : Deno.lstatSync(path); - - memoryView.setBigUint64( - bufferOffset, - BigInt(info.dev ? info.dev : 0), - true, - ); - bufferOffset += 8; - - memoryView.setBigUint64( - bufferOffset, - BigInt(info.ino ? info.ino : 0), - true, - ); - bufferOffset += 8; - - switch (true) { - case info.isFile: - memoryView.setUint8(bufferOffset, FILETYPE_REGULAR_FILE); - bufferOffset += 8; - break; - - case info.isDirectory: - memoryView.setUint8(bufferOffset, FILETYPE_DIRECTORY); - bufferOffset += 8; - break; - - case info.isSymlink: - memoryView.setUint8(bufferOffset, FILETYPE_SYMBOLIC_LINK); - bufferOffset += 8; - break; - - default: - memoryView.setUint8(bufferOffset, FILETYPE_UNKNOWN); - bufferOffset += 8; - break; - } - - memoryView.setUint32(bufferOffset, Number(info.nlink), true); - bufferOffset += 8; - - memoryView.setBigUint64(bufferOffset, BigInt(info.size), true); - bufferOffset += 8; - - memoryView.setBigUint64( - bufferOffset, - BigInt(info.atime ? info.atime.getTime() * 1e6 : 0), - true, - ); - bufferOffset += 8; - - memoryView.setBigUint64( - bufferOffset, - BigInt(info.mtime ? info.mtime.getTime() * 1e6 : 0), - true, - ); - bufferOffset += 8; - - memoryView.setBigUint64( - bufferOffset, - BigInt(info.birthtime ? info.birthtime.getTime() * 1e6 : 0), - true, - ); - bufferOffset += 8; - - return ERRNO_SUCCESS; - }), - - "path_filestat_set_times": syscall(( - fd: number, - flags: number, - pathOffset: number, - pathLength: number, - atim: bigint, - mtim: bigint, - fstflags: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const data = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const path = resolve(entry.path!, textDecoder.decode(data)); - - if ((fstflags & FSTFLAGS_ATIM_NOW) == FSTFLAGS_ATIM_NOW) { - atim = BigInt(Date.now()) * BigInt(1e6); - } - - if ((fstflags & FSTFLAGS_MTIM_NOW) == FSTFLAGS_MTIM_NOW) { - mtim = BigInt(Date.now()) * BigInt(1e6); - } - - Deno.utimeSync(path, Number(atim), Number(mtim)); - - return ERRNO_SUCCESS; - }), - - "path_link": syscall(( - oldFd: number, - oldFlags: number, - oldPathOffset: number, - oldPathLength: number, - newFd: number, - newPathOffset: number, - newPathLength: number, - ): number => { - const oldEntry = this.#fds[oldFd]; - const newEntry = this.#fds[newFd]; - if (!oldEntry || !newEntry) { - return ERRNO_BADF; - } - - if (!oldEntry.path || !newEntry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const oldData = new Uint8Array( - this.#memory.buffer, - oldPathOffset, - oldPathLength, - ); - const oldPath = resolve(oldEntry.path!, textDecoder.decode(oldData)); - const newData = new Uint8Array( - this.#memory.buffer, - newPathOffset, - newPathLength, - ); - const newPath = resolve(newEntry.path!, textDecoder.decode(newData)); - - Deno.linkSync(oldPath, newPath); - - return ERRNO_SUCCESS; - }), - - "path_open": syscall(( - fd: number, - dirflags: number, - pathOffset: number, - pathLength: number, - oflags: number, - rightsBase: bigint, - rightsInheriting: bigint, - fdflags: number, - openedFdOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const pathData = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const resolvedPath = resolve(entry.path!, textDecoder.decode(pathData)); - - if (relative(entry.path, resolvedPath).startsWith("..")) { - return ERRNO_NOTCAPABLE; - } - - let path; - if ( - (dirflags & LOOKUPFLAGS_SYMLINK_FOLLOW) == LOOKUPFLAGS_SYMLINK_FOLLOW - ) { - try { - path = Deno.realPathSync(resolvedPath); - if (relative(entry.path, path).startsWith("..")) { - return ERRNO_NOTCAPABLE; - } - } catch (_err) { - path = resolvedPath; - } - } else { - path = resolvedPath; - } - - if ((oflags & OFLAGS_DIRECTORY) !== 0) { - // XXX (caspervonb) this isn't ideal as we can't get a rid for the - // directory this way so there's no native fstat but Deno.open - // doesn't work with directories on windows so we'll have to work - // around it for now. - const entries = Array.from(Deno.readDirSync(path)); - const openedFd = this.#fds.push({ - flags: fdflags, - path, - entries, - }) - 1; - - const memoryView = new DataView(this.#memory.buffer); - memoryView.setUint32(openedFdOffset, openedFd, true); - - return ERRNO_SUCCESS; - } - - const options = { - read: false, - write: false, - append: false, - truncate: false, - create: false, - createNew: false, - }; - - if ((oflags & OFLAGS_CREAT) !== 0) { - options.create = true; - options.write = true; - } - - if ((oflags & OFLAGS_EXCL) !== 0) { - options.createNew = true; - } - - if ((oflags & OFLAGS_TRUNC) !== 0) { - options.truncate = true; - options.write = true; - } - - const read = ( - RIGHTS_FD_READ | - RIGHTS_FD_READDIR - ); - - if ((rightsBase & read) != 0n) { - options.read = true; - } - - const write = ( - RIGHTS_FD_DATASYNC | - RIGHTS_FD_WRITE | - RIGHTS_FD_ALLOCATE | - RIGHTS_FD_FILESTAT_SET_SIZE - ); - - if ((rightsBase & write) != 0n) { - options.write = true; - } - - if ((fdflags & FDFLAGS_APPEND) != 0) { - options.append = true; - } - - if ((fdflags & FDFLAGS_DSYNC) != 0) { - // TODO(caspervonb): review if we can emulate this. - } - - if ((fdflags & FDFLAGS_NONBLOCK) != 0) { - // TODO(caspervonb): review if we can emulate this. - } - - if ((fdflags & FDFLAGS_RSYNC) != 0) { - // TODO(caspervonb): review if we can emulate this. - } - - if ((fdflags & FDFLAGS_SYNC) != 0) { - // TODO(caspervonb): review if we can emulate this. - } - - if (!options.read && !options.write && !options.truncate) { - options.read = true; - } - - const { rid } = Deno.openSync(path, options); - const openedFd = this.#fds.push({ - rid, - flags: fdflags, - path, - }) - 1; - - const memoryView = new DataView(this.#memory.buffer); - memoryView.setUint32(openedFdOffset, openedFd, true); - - return ERRNO_SUCCESS; - }), - - "path_readlink": syscall(( - fd: number, - pathOffset: number, - pathLength: number, - bufferOffset: number, - bufferLength: number, - bufferUsedOffset: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const memoryData = new Uint8Array(this.#memory.buffer); - const memoryView = new DataView(this.#memory.buffer); - - const pathData = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const path = resolve(entry.path!, new TextDecoder().decode(pathData)); - - const link = Deno.readLinkSync(path); - const linkData = new TextEncoder().encode(link); - memoryData.set(new Uint8Array(linkData, 0, bufferLength), bufferOffset); - - const bufferUsed = Math.min(linkData.byteLength, bufferLength); - memoryView.setUint32(bufferUsedOffset, bufferUsed, true); - - return ERRNO_SUCCESS; - }), - - "path_remove_directory": syscall(( - fd: number, - pathOffset: number, - pathLength: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const data = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const path = resolve(entry.path!, textDecoder.decode(data)); - - if (!Deno.statSync(path).isDirectory) { - return ERRNO_NOTDIR; - } - - Deno.removeSync(path); - - return ERRNO_SUCCESS; - }), - - "path_rename": syscall(( - fd: number, - oldPathOffset: number, - oldPathLength: number, - newFd: number, - newPathOffset: number, - newPathLength: number, - ): number => { - const oldEntry = this.#fds[fd]; - const newEntry = this.#fds[newFd]; - if (!oldEntry || !newEntry) { - return ERRNO_BADF; - } - - if (!oldEntry.path || !newEntry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const oldData = new Uint8Array( - this.#memory.buffer, - oldPathOffset, - oldPathLength, - ); - const oldPath = resolve(oldEntry.path!, textDecoder.decode(oldData)); - const newData = new Uint8Array( - this.#memory.buffer, - newPathOffset, - newPathLength, - ); - const newPath = resolve(newEntry.path!, textDecoder.decode(newData)); - - Deno.renameSync(oldPath, newPath); - - return ERRNO_SUCCESS; - }), - - "path_symlink": syscall(( - oldPathOffset: number, - oldPathLength: number, - fd: number, - newPathOffset: number, - newPathLength: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const oldData = new Uint8Array( - this.#memory.buffer, - oldPathOffset, - oldPathLength, - ); - const oldPath = textDecoder.decode(oldData); - const newData = new Uint8Array( - this.#memory.buffer, - newPathOffset, - newPathLength, - ); - const newPath = resolve(entry.path!, textDecoder.decode(newData)); - - Deno.symlinkSync(oldPath, newPath); - - return ERRNO_SUCCESS; - }), - - "path_unlink_file": syscall(( - fd: number, - pathOffset: number, - pathLength: number, - ): number => { - const entry = this.#fds[fd]; - if (!entry) { - return ERRNO_BADF; - } - - if (!entry.path) { - return ERRNO_INVAL; - } - - const textDecoder = new TextDecoder(); - const data = new Uint8Array( - this.#memory.buffer, - pathOffset, - pathLength, - ); - const path = resolve(entry.path!, textDecoder.decode(data)); - - Deno.removeSync(path); - - return ERRNO_SUCCESS; - }), - - "poll_oneoff": syscall(( - _inOffset: number, - _outOffset: number, - _nsubscriptions: number, - _neventsOffset: number, - ): number => { - return ERRNO_NOSYS; - }), - - "proc_exit": syscall(( - rval: number, - ): never => { - if (this.#exitOnReturn) { - Deno.exit(rval); - } - - throw new ExitStatus(rval); - }), - - "proc_raise": syscall(( - _sig: number, - ): number => { - return ERRNO_NOSYS; - }), - - "sched_yield": syscall((): number => { - return ERRNO_SUCCESS; - }), - - "random_get": syscall(( - bufferOffset: number, - bufferLength: number, - ): number => { - const buffer = new Uint8Array( - this.#memory.buffer, - bufferOffset, - bufferLength, - ); - crypto.getRandomValues(buffer); - - return ERRNO_SUCCESS; - }), - - "sock_recv": syscall(( - _fd: number, - _riDataOffset: number, - _riDataLength: number, - _riFlags: number, - _roDataLengthOffset: number, - _roFlagsOffset: number, - ): number => { - return ERRNO_NOSYS; - }), - - "sock_send": syscall(( - _fd: number, - _siDataOffset: number, - _siDataLength: number, - _siFlags: number, - _soDataLengthOffset: number, - ): number => { - return ERRNO_NOSYS; - }), - - "sock_shutdown": syscall(( - _fd: number, - _how: number, - ): number => { - return ERRNO_NOSYS; - }), - }; - - this.#started = false; - } - - /** - * Attempt to begin execution of instance as a command by invoking its - * _start() export. - * - * If the instance does not contain a _start() export, or if the instance - * contains an _initialize export an error will be thrown. - * - * The instance must also have a WebAssembly.Memory export named "memory" - * which will be used as the address space, if it does not an error will be - * thrown. - */ - start(instance: WebAssembly.Instance): null | number | never { - if (this.#started) { - throw new Error("WebAssembly.Instance has already started"); - } - - this.#started = true; - - const { _start, _initialize, memory } = instance.exports; - - if (!(memory instanceof WebAssembly.Memory)) { - throw new TypeError("WebAsembly.instance must provide a memory export"); - } - - this.#memory = memory; - - if (typeof _initialize == "function") { - throw new TypeError( - "WebAsembly.instance export _initialize must not be a function", - ); - } - - if (typeof _start != "function") { - throw new TypeError( - "WebAssembly.Instance export _start must be a function", - ); - } - - try { - _start(); - } catch (err) { - if (err instanceof ExitStatus) { - return err.code; - } - - throw err; - } - - return null; - } - - /** - * Attempt to initialize instance as a reactor by invoking its _initialize() export. - * - * If instance contains a _start() export, then an exception is thrown. - * - * The instance must also have a WebAssembly.Memory export named "memory" - * which will be used as the address space, if it does not an error will be - * thrown. - */ - initialize(instance: WebAssembly.Instance) { - if (this.#started) { - throw new Error("WebAssembly.Instance has already started"); - } - - this.#started = true; - - const { _start, _initialize, memory } = instance.exports; - - if (!(memory instanceof WebAssembly.Memory)) { - throw new TypeError("WebAsembly.instance must provide a memory export"); - } - - this.#memory = memory; - - if (typeof _start == "function") { - throw new TypeError( - "WebAssembly.Instance export _start must not be a function", - ); - } - - if (typeof _initialize != "function") { - throw new TypeError( - "WebAsembly.instance export _initialize must be a function", - ); - } - - _initialize(); - } -} |