node/src/node_file.cc at master · magicmonkey/node · GitHub

This repository was archived by the owner on Jun 7, 2020. It is now read-only.

History

990 lines (789 loc) · 27.6 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

// Copyright Joyent, Inc. and other Node contributors.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include "node.h"

#include "node_file.h"

#include "node_buffer.h"

#include "node_stat_watcher.h"

#include "req_wrap.h"

#include <fcntl.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <assert.h>

#include <string.h>

#include <errno.h>

#include <limits.h>

#if defined(__MINGW32__) || defined(_MSC_VER)

# include <io.h>

#endif

namespace node {

using namespace v8;

#define MIN(a,b) ((a) < (b) ? (a) : (b))

#define TYPE_ERROR(msg) \

ThrowException(Exception::TypeError(String::New(msg)));

#define THROW_BAD_ARGS TYPE_ERROR("Bad argument")

class FSReqWrap: public ReqWrap<uv_fs_t> {

public:

FSReqWrap(const char* syscall)

: syscall_(syscall) {

}

const char* syscall() { return syscall_; }

private:

const char* syscall_;

};

static Persistent<String> encoding_symbol;

static Persistent<String> errno_symbol;

static Persistent<String> buf_symbol;

static Persistent<String> oncomplete_sym;

#define ASSERT_OFFSET(a) \

if (!(a)->IsUndefined() && !(a)->IsNull() && !IsInt64((a)->NumberValue())) { \

return ThrowException(Exception::TypeError(String::New("Not an integer"))); \

}

#define ASSERT_TRUNCATE_LENGTH(a) \

if (!(a)->IsUndefined() && !(a)->IsNull() && !IsInt64((a)->NumberValue())) { \

return ThrowException(Exception::TypeError(String::New("Not an integer"))); \

}

#define GET_OFFSET(a) ((a)->IsNumber() ? (a)->IntegerValue() : -1)

#define GET_TRUNCATE_LENGTH(a) ((a)->IntegerValue())

static inline int IsInt64(double x) {

return x == static_cast<double>(static_cast<int64_t>(x));

}

static void After(uv_fs_t *req) {

HandleScope scope;

FSReqWrap* req_wrap = (FSReqWrap*) req->data;

assert(&req_wrap->req_ == req);

// there is always at least one argument. "error"

int argc = 1;

// Allocate space for two args. We may only use one depending on the case.

// (Feel free to increase this if you need more)

Local<Value> argv[2];

// NOTE: This may be needed to be changed if something returns a -1

// for a success, which is possible.

if (req->result == -1) {

// If the request doesn't have a path parameter set.

if (!req->path) {

argv[0] = UVException(req->errorno,

NULL,

req_wrap->syscall());

} else {

argv[0] = UVException(req->errorno,

NULL,

req_wrap->syscall(),

static_cast<const char*>(req->path));

}

} else {

// error value is empty or null for non-error.

argv[0] = Local<Value>::New(Null());

// All have at least two args now.

argc = 2;

switch (req->fs_type) {

// These all have no data to pass.

case UV_FS_CLOSE:

case UV_FS_RENAME:

case UV_FS_UNLINK:

case UV_FS_RMDIR:

case UV_FS_MKDIR:

case UV_FS_FTRUNCATE:

case UV_FS_FSYNC:

case UV_FS_FDATASYNC:

case UV_FS_LINK:

case UV_FS_SYMLINK:

case UV_FS_CHMOD:

case UV_FS_FCHMOD:

case UV_FS_CHOWN:

case UV_FS_FCHOWN:

// These, however, don't.

argc = 1;

break;

case UV_FS_UTIME:

case UV_FS_FUTIME:

argc = 0;

break;

case UV_FS_OPEN:

/* pass thru */

case UV_FS_SENDFILE:

argv[1] = Integer::New(req->result);

break;

case UV_FS_WRITE:

argv[1] = Integer::New(req->result);

break;

case UV_FS_STAT:

case UV_FS_LSTAT:

case UV_FS_FSTAT:

argv[1] = BuildStatsObject(static_cast<const uv_statbuf_t*>(req->ptr));

break;

case UV_FS_READLINK:

argv[1] = String::New(static_cast<char*>(req->ptr));

break;

case UV_FS_READ:

// Buffer interface

argv[1] = Integer::New(req->result);

break;

case UV_FS_READDIR:

{

char *namebuf = static_cast<char*>(req->ptr);

int nnames = req->result;

Local<Array> names = Array::New(nnames);

for (int i = 0; i < nnames; i++) {

Local<String> name = String::New(namebuf);

names->Set(Integer::New(i), name);

#ifndef NDEBUG

namebuf += strlen(namebuf);

assert(*namebuf == '\0');

namebuf += 1;

#else

namebuf += strlen(namebuf) + 1;

#endif

}

argv[1] = names;

}

break;

default:

assert(0 && "Unhandled eio response");

}

if (oncomplete_sym.IsEmpty()) {

oncomplete_sym = NODE_PSYMBOL("oncomplete");

}

MakeCallback(req_wrap->object_, oncomplete_sym, argc, argv);

uv_fs_req_cleanup(&req_wrap->req_);

delete req_wrap;

}

// This struct is only used on sync fs calls.

// For async calls FSReqWrap is used.

struct fs_req_wrap {

fs_req_wrap() {}

~fs_req_wrap() { uv_fs_req_cleanup(&req); }

// Ensure that copy ctor and assignment operator are not used.

fs_req_wrap(const fs_req_wrap& req);

fs_req_wrap& operator=(const fs_req_wrap& req);

uv_fs_t req;

};

#define ASYNC_CALL(func, callback, ...) \

FSReqWrap* req_wrap = new FSReqWrap(#func); \

int r = uv_fs_##func(uv_default_loop(), &req_wrap->req_, \

__VA_ARGS__, After); \

req_wrap->object_->Set(oncomplete_sym, callback); \

req_wrap->Dispatched(); \

if (r < 0) { \

uv_fs_t* req = &req_wrap->req_; \

req->result = r; \

req->path = NULL; \

req->errorno = uv_last_error(uv_default_loop()).code; \

After(req); \

} \

return scope.Close(req_wrap->object_);

#define SYNC_CALL(func, path, ...) \

fs_req_wrap req_wrap; \

int result = uv_fs_##func(uv_default_loop(), &req_wrap.req, __VA_ARGS__, NULL); \

if (result < 0) { \

int code = uv_last_error(uv_default_loop()).code; \

return ThrowException(UVException(code, #func, "", path)); \

}

#define SYNC_REQ req_wrap.req

#define SYNC_RESULT result

static Handle<Value> Close(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1 || !args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

if (args[1]->IsFunction()) {

ASYNC_CALL(close, args[1], fd)

} else {

SYNC_CALL(close, 0, fd)

return Undefined();

}

static Persistent<FunctionTemplate> stats_constructor_template;

static Persistent<String> dev_symbol;

static Persistent<String> ino_symbol;

static Persistent<String> mode_symbol;

static Persistent<String> nlink_symbol;

static Persistent<String> uid_symbol;

static Persistent<String> gid_symbol;

static Persistent<String> rdev_symbol;

static Persistent<String> size_symbol;

static Persistent<String> blksize_symbol;

static Persistent<String> blocks_symbol;

static Persistent<String> atime_symbol;

static Persistent<String> mtime_symbol;

static Persistent<String> ctime_symbol;

Local<Object> BuildStatsObject(const uv_statbuf_t* s) {

HandleScope scope;

if (dev_symbol.IsEmpty()) {

dev_symbol = NODE_PSYMBOL("dev");

ino_symbol = NODE_PSYMBOL("ino");

mode_symbol = NODE_PSYMBOL("mode");

nlink_symbol = NODE_PSYMBOL("nlink");

uid_symbol = NODE_PSYMBOL("uid");

gid_symbol = NODE_PSYMBOL("gid");

rdev_symbol = NODE_PSYMBOL("rdev");

size_symbol = NODE_PSYMBOL("size");

blksize_symbol = NODE_PSYMBOL("blksize");

blocks_symbol = NODE_PSYMBOL("blocks");

atime_symbol = NODE_PSYMBOL("atime");

mtime_symbol = NODE_PSYMBOL("mtime");

ctime_symbol = NODE_PSYMBOL("ctime");

}

Local<Object> stats =

stats_constructor_template->GetFunction()->NewInstance();

/* ID of device containing file */

stats->Set(dev_symbol, Integer::New(s->st_dev));

/* inode number */

stats->Set(ino_symbol, Integer::New(s->st_ino));

/* protection */

stats->Set(mode_symbol, Integer::New(s->st_mode));

/* number of hard links */

stats->Set(nlink_symbol, Integer::New(s->st_nlink));

/* user ID of owner */

stats->Set(uid_symbol, Integer::New(s->st_uid));

/* group ID of owner */

stats->Set(gid_symbol, Integer::New(s->st_gid));

/* device ID (if special file) */

stats->Set(rdev_symbol, Integer::New(s->st_rdev));

/* total size, in bytes */

stats->Set(size_symbol, Number::New(s->st_size));

#ifdef __POSIX__

/* blocksize for filesystem I/O */

stats->Set(blksize_symbol, Integer::New(s->st_blksize));

/* number of blocks allocated */

stats->Set(blocks_symbol, Integer::New(s->st_blocks));

#endif

/* time of last access */

stats->Set(atime_symbol, NODE_UNIXTIME_V8(s->st_atime));

/* time of last modification */

stats->Set(mtime_symbol, NODE_UNIXTIME_V8(s->st_mtime));

/* time of last status change */

stats->Set(ctime_symbol, NODE_UNIXTIME_V8(s->st_ctime));

return scope.Close(stats);

}

static Handle<Value> Stat(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1) return TYPE_ERROR("path required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

String::Utf8Value path(args[0]);

if (args[1]->IsFunction()) {

ASYNC_CALL(stat, args[1], *path)

} else {

SYNC_CALL(stat, *path, *path)

return scope.Close(

BuildStatsObject(static_cast<const uv_statbuf_t*>(SYNC_REQ.ptr)));

}

static Handle<Value> LStat(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1) return TYPE_ERROR("path required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

String::Utf8Value path(args[0]);

if (args[1]->IsFunction()) {

ASYNC_CALL(lstat, args[1], *path)

} else {

SYNC_CALL(lstat, *path, *path)

return scope.Close(

BuildStatsObject(static_cast<const uv_statbuf_t*>(SYNC_REQ.ptr)));

}

static Handle<Value> FStat(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1 || !args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

if (args[1]->IsFunction()) {

ASYNC_CALL(fstat, args[1], fd)

} else {

SYNC_CALL(fstat, 0, fd)

return scope.Close(

BuildStatsObject(static_cast<const uv_statbuf_t*>(SYNC_REQ.ptr)));

}

static Handle<Value> Symlink(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("dest path required");

if (len < 2) return TYPE_ERROR("src path required");

if (!args[0]->IsString()) return TYPE_ERROR("dest path must be a string");

if (!args[1]->IsString()) return TYPE_ERROR("src path must be a string");

String::Utf8Value dest(args[0]);

String::Utf8Value path(args[1]);

int flags = 0;

if (args[2]->IsString()) {

String::Utf8Value mode(args[2]);

if (strcmp(*mode, "dir") == 0) {

flags |= UV_FS_SYMLINK_DIR;

} else if (strcmp(*mode, "junction") == 0) {

flags |= UV_FS_SYMLINK_JUNCTION;

} else if (strcmp(*mode, "file") != 0) {

return ThrowException(Exception::Error(

String::New("Unknown symlink type")));

}

if (args[3]->IsFunction()) {

ASYNC_CALL(symlink, args[3], *dest, *path, flags)

} else {

SYNC_CALL(symlink, *path, *dest, *path, flags)

return Undefined();

}

static Handle<Value> Link(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("dest path required");

if (len < 2) return TYPE_ERROR("src path required");

if (!args[0]->IsString()) return TYPE_ERROR("dest path must be a string");

if (!args[1]->IsString()) return TYPE_ERROR("src path must be a string");

String::Utf8Value orig_path(args[0]);

String::Utf8Value new_path(args[1]);

if (args[2]->IsFunction()) {

ASYNC_CALL(link, args[2], *orig_path, *new_path)

} else {

SYNC_CALL(link, *orig_path, *orig_path, *new_path)

return Undefined();

}

static Handle<Value> ReadLink(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1) return TYPE_ERROR("path required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

String::Utf8Value path(args[0]);

if (args[1]->IsFunction()) {

ASYNC_CALL(readlink, args[1], *path)

} else {

SYNC_CALL(readlink, *path, *path)

return scope.Close(String::New((char*)SYNC_REQ.ptr));

}

static Handle<Value> Rename(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("old path required");

if (len < 2) return TYPE_ERROR("new path required");

if (!args[0]->IsString()) return TYPE_ERROR("old path must be a string");

if (!args[1]->IsString()) return TYPE_ERROR("new path must be a string");

String::Utf8Value old_path(args[0]);

String::Utf8Value new_path(args[1]);

if (args[2]->IsFunction()) {

ASYNC_CALL(rename, args[2], *old_path, *new_path)

} else {

SYNC_CALL(rename, *old_path, *old_path, *new_path)

return Undefined();

}

static Handle<Value> Truncate(const Arguments& args) {

HandleScope scope;

if (args.Length() < 2 || !args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

ASSERT_TRUNCATE_LENGTH(args[1]);

int64_t len = GET_TRUNCATE_LENGTH(args[1]);

if (args[2]->IsFunction()) {

ASYNC_CALL(ftruncate, args[2], fd, len)

} else {

SYNC_CALL(ftruncate, 0, fd, len)

return Undefined();

}

static Handle<Value> Fdatasync(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1 || !args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

if (args[1]->IsFunction()) {

ASYNC_CALL(fdatasync, args[1], fd)

} else {

SYNC_CALL(fdatasync, 0, fd)

return Undefined();

}

static Handle<Value> Fsync(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1 || !args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

if (args[1]->IsFunction()) {

ASYNC_CALL(fsync, args[1], fd)

} else {

SYNC_CALL(fsync, 0, fd)

return Undefined();

}

static Handle<Value> Unlink(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1) return TYPE_ERROR("path required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

String::Utf8Value path(args[0]);

if (args[1]->IsFunction()) {

ASYNC_CALL(unlink, args[1], *path)

} else {

SYNC_CALL(unlink, *path, *path)

return Undefined();

}

static Handle<Value> RMDir(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1) return TYPE_ERROR("path required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

String::Utf8Value path(args[0]);

if (args[1]->IsFunction()) {

ASYNC_CALL(rmdir, args[1], *path)

} else {

SYNC_CALL(rmdir, *path, *path)

return Undefined();

}

static Handle<Value> MKDir(const Arguments& args) {

HandleScope scope;

if (args.Length() < 2 || !args[0]->IsString() || !args[1]->IsInt32()) {

return THROW_BAD_ARGS;

}

String::Utf8Value path(args[0]);

int mode = static_cast<int>(args[1]->Int32Value());

if (args[2]->IsFunction()) {

ASYNC_CALL(mkdir, args[2], *path, mode)

} else {

SYNC_CALL(mkdir, *path, *path, mode)

return Undefined();

}

static Handle<Value> SendFile(const Arguments& args) {

HandleScope scope;

if (args.Length() < 4 ||

!args[0]->IsUint32() ||

!args[1]->IsUint32() ||

!args[2]->IsUint32() ||

!args[3]->IsUint32()) {

return THROW_BAD_ARGS;

}

int out_fd = args[0]->Uint32Value();

int in_fd = args[1]->Uint32Value();

off_t in_offset = args[2]->Uint32Value();

size_t length = args[3]->Uint32Value();

if (args[4]->IsFunction()) {

ASYNC_CALL(sendfile, args[4], out_fd, in_fd, in_offset, length)

} else {

SYNC_CALL(sendfile, 0, out_fd, in_fd, in_offset, length)

return scope.Close(Integer::New(SYNC_RESULT));

}

static Handle<Value> ReadDir(const Arguments& args) {

HandleScope scope;

if (args.Length() < 1) return TYPE_ERROR("path required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

String::Utf8Value path(args[0]);

if (args[1]->IsFunction()) {

ASYNC_CALL(readdir, args[1], *path, 0 /*flags*/)

} else {

SYNC_CALL(readdir, *path, *path, 0 /*flags*/)

char *namebuf = static_cast<char*>(SYNC_REQ.ptr);

int nnames = req_wrap.req.result;

Local<Array> names = Array::New(nnames);

for (int i = 0; i < nnames; i++) {

Local<String> name = String::New(namebuf);

names->Set(Integer::New(i), name);

#ifndef NDEBUG

namebuf += strlen(namebuf);

assert(*namebuf == '\0');

namebuf += 1;

#else

namebuf += strlen(namebuf) + 1;

#endif

}

return scope.Close(names);

}

static Handle<Value> Open(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("path required");

if (len < 2) return TYPE_ERROR("flags required");

if (len < 3) return TYPE_ERROR("mode required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

if (!args[1]->IsInt32()) return TYPE_ERROR("flags must be an int");

if (!args[2]->IsInt32()) return TYPE_ERROR("mode must be an int");

String::Utf8Value path(args[0]);

int flags = args[1]->Int32Value();

int mode = static_cast<int>(args[2]->Int32Value());

if (args[3]->IsFunction()) {

ASYNC_CALL(open, args[3], *path, flags, mode)

} else {

SYNC_CALL(open, *path, *path, flags, mode)

int fd = SYNC_RESULT;

return scope.Close(Integer::New(fd));

}

// bytesWritten = write(fd, data, position, enc, callback)

// Wrapper for write(2).

// 0 fd integer. file descriptor

// 1 buffer the data to write

// 2 offset where in the buffer to start from

// 3 length how much to write

// 4 position if integer, position to write at in the file.

// if null, write from the current position

static Handle<Value> Write(const Arguments& args) {

HandleScope scope;

if (!args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

if (!Buffer::HasInstance(args[1])) {

return ThrowException(Exception::Error(

String::New("Second argument needs to be a buffer")));

}

Local<Object> buffer_obj = args[1]->ToObject();

char *buffer_data = Buffer::Data(buffer_obj);

size_t buffer_length = Buffer::Length(buffer_obj);

size_t off = args[2]->Int32Value();

if (off >= buffer_length) {

return ThrowException(Exception::Error(

String::New("Offset is out of bounds")));

}

ssize_t len = args[3]->Int32Value();

if (off + len > buffer_length) {

return ThrowException(Exception::Error(

String::New("off + len > buffer.length")));

}

ASSERT_OFFSET(args[4]);

int64_t pos = GET_OFFSET(args[4]);

char * buf = (char*)buffer_data + off;

Local<Value> cb = args[5];

if (cb->IsFunction()) {

ASYNC_CALL(write, cb, fd, buf, len, pos)

} else {

SYNC_CALL(write, 0, fd, buf, len, pos)

return scope.Close(Integer::New(SYNC_RESULT));

}

* Wrapper for read(2).

* bytesRead = fs.read(fd, buffer, offset, length, position)

* 0 fd integer. file descriptor

* 1 buffer instance of Buffer

* 2 offset integer. offset to start reading into inside buffer

* 3 length integer. length to read

* 4 position file position - null for current position

static Handle<Value> Read(const Arguments& args) {

HandleScope scope;

if (args.Length() < 2 || !args[0]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

Local<Value> cb;

size_t len;

int64_t pos;

char * buf = NULL;

if (!Buffer::HasInstance(args[1])) {

return ThrowException(Exception::Error(

String::New("Second argument needs to be a buffer")));

}

Local<Object> buffer_obj = args[1]->ToObject();

char *buffer_data = Buffer::Data(buffer_obj);

size_t buffer_length = Buffer::Length(buffer_obj);

size_t off = args[2]->Int32Value();

if (off >= buffer_length) {

return ThrowException(Exception::Error(

String::New("Offset is out of bounds")));

}

len = args[3]->Int32Value();

if (off + len > buffer_length) {

return ThrowException(Exception::Error(

String::New("Length extends beyond buffer")));

}

pos = GET_OFFSET(args[4]);

buf = buffer_data + off;

cb = args[5];

if (cb->IsFunction()) {

ASYNC_CALL(read, cb, fd, buf, len, pos);

} else {

SYNC_CALL(read, 0, fd, buf, len, pos)

Local<Integer> bytesRead = Integer::New(SYNC_RESULT);

return scope.Close(bytesRead);

}

/* fs.chmod(path, mode);

* Wrapper for chmod(1) / EIO_CHMOD

static Handle<Value> Chmod(const Arguments& args) {

HandleScope scope;

if(args.Length() < 2 || !args[0]->IsString() || !args[1]->IsInt32()) {

return THROW_BAD_ARGS;

}

String::Utf8Value path(args[0]);

int mode = static_cast<int>(args[1]->Int32Value());

if(args[2]->IsFunction()) {

ASYNC_CALL(chmod, args[2], *path, mode);

} else {

SYNC_CALL(chmod, *path, *path, mode);

return Undefined();

}

/* fs.fchmod(fd, mode);

* Wrapper for fchmod(1) / EIO_FCHMOD

static Handle<Value> FChmod(const Arguments& args) {

HandleScope scope;

if(args.Length() < 2 || !args[0]->IsInt32() || !args[1]->IsInt32()) {

return THROW_BAD_ARGS;

}

int fd = args[0]->Int32Value();

int mode = static_cast<int>(args[1]->Int32Value());

if(args[2]->IsFunction()) {

ASYNC_CALL(fchmod, args[2], fd, mode);

} else {

SYNC_CALL(fchmod, 0, fd, mode);

return Undefined();

}

/* fs.chown(path, uid, gid);

* Wrapper for chown(1) / EIO_CHOWN

static Handle<Value> Chown(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("path required");

if (len < 2) return TYPE_ERROR("uid required");

if (len < 3) return TYPE_ERROR("gid required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

if (!args[1]->IsInt32()) return TYPE_ERROR("uid must be an int");

if (!args[2]->IsInt32()) return TYPE_ERROR("gid must be an int");

String::Utf8Value path(args[0]);

int uid = static_cast<int>(args[1]->Int32Value());

int gid = static_cast<int>(args[2]->Int32Value());

if (args[3]->IsFunction()) {

ASYNC_CALL(chown, args[3], *path, uid, gid);

} else {

SYNC_CALL(chown, *path, *path, uid, gid);

return Undefined();

}

/* fs.fchown(fd, uid, gid);

* Wrapper for fchown(1) / EIO_FCHOWN

static Handle<Value> FChown(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("fd required");

if (len < 2) return TYPE_ERROR("uid required");

if (len < 3) return TYPE_ERROR("gid required");

if (!args[0]->IsInt32()) return TYPE_ERROR("fd must be an int");

if (!args[1]->IsInt32()) return TYPE_ERROR("uid must be an int");

if (!args[2]->IsInt32()) return TYPE_ERROR("gid must be an int");

int fd = args[0]->Int32Value();

int uid = static_cast<int>(args[1]->Int32Value());

int gid = static_cast<int>(args[2]->Int32Value());

if (args[3]->IsFunction()) {

ASYNC_CALL(fchown, args[3], fd, uid, gid);

} else {

SYNC_CALL(fchown, 0, fd, uid, gid);

return Undefined();

}

static Handle<Value> UTimes(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("path required");

if (len < 2) return TYPE_ERROR("atime required");

if (len < 3) return TYPE_ERROR("mtime required");

if (!args[0]->IsString()) return TYPE_ERROR("path must be a string");

if (!args[1]->IsNumber()) return TYPE_ERROR("atime must be a number");

if (!args[2]->IsNumber()) return TYPE_ERROR("mtime must be a number");

const String::Utf8Value path(args[0]);

const double atime = static_cast<double>(args[1]->NumberValue());

const double mtime = static_cast<double>(args[2]->NumberValue());

if (args[3]->IsFunction()) {

ASYNC_CALL(utime, args[3], *path, atime, mtime);

} else {

SYNC_CALL(utime, *path, *path, atime, mtime);

return Undefined();

}

static Handle<Value> FUTimes(const Arguments& args) {

HandleScope scope;

int len = args.Length();

if (len < 1) return TYPE_ERROR("fd required");

if (len < 2) return TYPE_ERROR("atime required");

if (len < 3) return TYPE_ERROR("mtime required");

if (!args[0]->IsInt32()) return TYPE_ERROR("fd must be an int");

if (!args[1]->IsNumber()) return TYPE_ERROR("atime must be a number");

if (!args[2]->IsNumber()) return TYPE_ERROR("mtime must be a number");

const int fd = args[0]->Int32Value();

const double atime = static_cast<double>(args[1]->NumberValue());

const double mtime = static_cast<double>(args[2]->NumberValue());

if (args[3]->IsFunction()) {

ASYNC_CALL(futime, args[3], fd, atime, mtime);

} else {

SYNC_CALL(futime, 0, fd, atime, mtime);

return Undefined();

}

void File::Initialize(Handle<Object> target) {

HandleScope scope;

NODE_SET_METHOD(target, "close", Close);

NODE_SET_METHOD(target, "open", Open);

NODE_SET_METHOD(target, "read", Read);

NODE_SET_METHOD(target, "fdatasync", Fdatasync);

NODE_SET_METHOD(target, "fsync", Fsync);

NODE_SET_METHOD(target, "rename", Rename);

NODE_SET_METHOD(target, "truncate", Truncate);

NODE_SET_METHOD(target, "rmdir", RMDir);

NODE_SET_METHOD(target, "mkdir", MKDir);

NODE_SET_METHOD(target, "sendfile", SendFile);

NODE_SET_METHOD(target, "readdir", ReadDir);

NODE_SET_METHOD(target, "stat", Stat);

NODE_SET_METHOD(target, "lstat", LStat);

NODE_SET_METHOD(target, "fstat", FStat);

NODE_SET_METHOD(target, "link", Link);

NODE_SET_METHOD(target, "symlink", Symlink);

NODE_SET_METHOD(target, "readlink", ReadLink);

NODE_SET_METHOD(target, "unlink", Unlink);

NODE_SET_METHOD(target, "write", Write);

NODE_SET_METHOD(target, "chmod", Chmod);

NODE_SET_METHOD(target, "fchmod", FChmod);

//NODE_SET_METHOD(target, "lchmod", LChmod);

NODE_SET_METHOD(target, "chown", Chown);

NODE_SET_METHOD(target, "fchown", FChown);

//NODE_SET_METHOD(target, "lchown", LChown);

NODE_SET_METHOD(target, "utimes", UTimes);

NODE_SET_METHOD(target, "futimes", FUTimes);

errno_symbol = NODE_PSYMBOL("errno");

encoding_symbol = NODE_PSYMBOL("node:encoding");

buf_symbol = NODE_PSYMBOL("__buf");

}

void InitFs(Handle<Object> target) {

HandleScope scope;

// Initialize the stats object

Local<FunctionTemplate> stat_templ = FunctionTemplate::New();

stats_constructor_template = Persistent<FunctionTemplate>::New(stat_templ);

target->Set(String::NewSymbol("Stats"),

stats_constructor_template->GetFunction());

File::Initialize(target);

oncomplete_sym = NODE_PSYMBOL("oncomplete");

StatWatcher::Initialize(target);

}

} // end namespace node

NODE_MODULE(node_fs, node::InitFs)

node/src/node_file.cc at master · magicmonkey/node · GitHub

Expand file tree

Breadcrumbs

node_file.cc

Latest commit

History

Breadcrumbs

node_file.cc

File metadata and controls