《unix环境高级编程 英文版·第2版》PDF下载

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Chapter 1.UNIX System Overview 1

1.1 Introduction 1

1.2 UNIX Architecture 1

1.3 Logging In 2

1.4 Files and Directories 4

1.5 Input and Output 8

1.6 Programs and Processes 10

1.7 Error Handling 14

1.8 User Identification 16

1.9 Signals 18

1.10 Time Values 20

1.11 System Calls and Library Functions 21

1.12 Summary 23

Chapter 2.UNIX Standardization and Implementations 25

2.1 Introduction 25

2.2 UNIX Standardization 25

2.2.1 ISO C 25

2.2.2 IEEE POSIX 26

2.2.3 The Single UNIX Specification 29

2.2.4 FIPS 33

2.3 UNIX System Implementations 33

2.3.1 UNIX System V Release 4 33

2.3.2 4.4BSD 34

2.3.3 FreeBSD 35

2.3.4 Linux 35

2.3.5 Mac OS X 35

2.3.6 Solaris 35

2.3.7 Other UNIX Systems 36

2.4 Relationship of Standards and Implementations 36

2.5 Limits 36

2.5.1 ISO C Limits 38

2.5.2 POSIX Limits 38

2.5.3 XSI Limits 40

2.5.4 sysconf, pathconf, and fpathconf Functions 41

2.5.5 Indeterminate Runtime Limits 48

2.6 Options 52

2.7 Feature Test Macros 55

2.8 Primitive System Data Types 56

2.9 Conflicts Between Standards 56

2.10 Summary 58

Chapter 3. File I/O 59

3.1 Introduction 59

3.2 File Descriptors 59

3.3 open Function 60

3.4 creat Function 62

3.5 close Function 63

3.6 lseek Function 63

3.7 read Function 67

3.8 write Function 68

3.9 I/O Efficiency 68

3.10 File Sharing 70

3.11 Atomic Operations 74

3.12 dup and dup2 Functions 76

3.13 sync, fsync, and fdatasync Functions 77

3.14 fcntl Function 78

3.15 ioctl Function 83

3.16 /dev/fd 84

3.17 Summary 85

Chapter 4. Files and Directories 87

4.1 Introduction 87

4.2 stat, fstat, and lstat Functions 87

4.3 File Types 88

4.4 Set-User-ID and Set-Group-ID 91

4.5 File Access Permissions 92

4.6 Ownership of New Files and Directories 95

4.7 access Function 95

4.8 umask Function 97

4.9 chmod and fchmod Functions 99

4.10 Sticky Bit 101

4.11 chown, fchown, and lchown Functions 102

4.12 File Size 103

4.13 File Truncation 105

4.14 File Systems 105

4.15 link, unlink, remove, and rename Functions 108

4.16 Symbolic Links 112

4.17 symlink and readlink Functions 115

4.18 File Times 115

4.19 utime Function 116

4.20 mkdir and rmdir Functions 119

4.21 Reading Directories 120

4.22 chdir, fchdir, and getcwd Functions 125

4.23 Device Special Files 127

4.24 Summary of File Access Permission Bits 130

4.25 Summary 130

Chapter 5. Standard I/O Library 133

5.1 Introduction 133

5.2 Streams and FILE Objects 133

5.3 Standard Input, Standard Output, and Standard Error 135

5.4 Buffering 135

5.5 Opening a Stream 138

5.6 Reading and Writing a Stream 140

5.7 Line-at-a-Time I/O 142

5.8 Standard I/O Efficiency 143

5.9 Binary I/O 145

5.10 Positioning a Stream 147

5.11 Formatted I/O 149

5.12 Implementation Details 153

5.13 Temporary Files 155

5.14 Alternatives to Standard I/O 159

5.15 Summary 159

Chapter 6. System Data Files and Information 161

6.1 Introduction 161

6.2 Password File 161

6.3 Shadow Passwords 165

6.4 Group File 166

6.5 Supplementary Group IDs 167

6.6 Implementation Differences 169

6.7 Other Data Files 169

6.8 Login Accounting 170

6.9 System Identification 171

6.10 Time and Date Routines 173

6.11 Summary 177

Chapter 7. Process Environment 179

7.1 Introduction 179

7.2 main Function 179

7.3 Process Termination 180

7.4 Command-Line Arguments 185

7.5 Environment List 185

7.6 Memory Layout of a C Program 186

7.7 Shared Libraries 188

7.8 Memory Allocation 189

7.9 Environment Variables 192

7.10 setjmp and longjmp Functions 195

7.11 getrlimit and setrlimit Functions 202

7.12 Summary 206

Chapter 8. Process Control 209

8.1 Introduction 209

8.2 Process Identifiers 209

8.3 fork Function 211

8.4 vfork Function 216

8.5 exit Functions 218

8.6 wait and waitpid Functions 220

8.7 waitid Function 226

8.8 wait3 and wait4 Functions 227

8.9 Race Conditions 227

8.10 exec Functions 231

8.11 Changing User IDs and Group IDs 237

8.12 Interpreter Files 242

8.13 system Function 246

8.14 Process Accounting 250

8.15 User Identification 256

8.16 Process Times 257

8.17 Summary 259

Chapter 9. Process Relationships 261

9.1 Introduction 261

9.2 Terminal Logins 261

9.3 Network Logins 266

9.4 Process Groups 269

9.5 Sessions 270

9.6 Controlling Terminal 272

9.7 tcgetpgrp, tcsetpgrp, and tcgetsid Functions 273

9.8 Job Control 274

9.9 Shell Execution of Programs 278

9.10 Orphaned Process Groups 282

9.11 FreeBSD Implementation 285

9.12 Summary 287

Chapter 10. Signals 289

10.1 Introduction 289

10.2 Signal Concepts 289

10.3 signal Function 298

10.4 Unreliable Signals 301

10.5 Interrupted System Calls 303

10.6 Reentrant Functions 305

10.7 SIGCLD Semantics 308

10.8 Reliable-Signal Terminology and Semantics 310

10.9 kill and raise Functions 311

10.10 alarm and pause Functions 313

10.11 Signal Sets 318

10.12 sigprocmask Function 320

10.13 s igpending Function 322

10.14 sigaction Function 324

10.15 sigsetjmp and siglongjmp Functions 329

10.16 sigsuspend Function 333

10.17 abort Function 340

10.18 system Function 342

10.19 sleep Function 347

10.20 Job-Control Signals 349

10.21 Additional Features 352

10.22 Summary 353

Chapter 11. Threads 355

11.1 Introduction 355

11.2 Thread Concepts 355

11.3 Thread Identification 356

11.4 Thread Creation 357

11.5 Thread Termination 360

11.6 Thread Synchronization 368

11.7 Summary 385

Chapter 12. Thread Control 387

12.1 Introduction 387

12.2 Thread Limits 387

12.3 Thread Attributes 388

12.4 Synchronization Attributes 393

12.5 Reentrancy 401

12.6 Thread-Specific Data 406

12.7 Cancel Options 410

12.8 Threads and Signals 413

12.9 Threads and fork 416

12.10 Threads and I/O 420

12.11 Summary 420

Chapter 13. Daemon Processes 423

13.1 Introduction 423

13.2 Daemon Characteristics 423

13.3 Coding Rules 425

13.4 Error Logging 428

13.5 Single-Instance Daemons 432

13.6 Daemon Conventions 434

13.7 Client-Server Model 439

13.8 Summary 439

Chapter 14. Advanced I/O 441

14.1 Introduction 441

14.2 Nonblocking I/O 441

14.3 Record Locking 444

14.4 STREAMS 460

14.5 I/O Multiplexing 472

14.5.1 select and pselect Functions 474

14.5.2 poll Function 479

14.6 Asynchronous I/O 481

14.6.1 System V Asynchronous I/O 481

14.6.2 BSD Asynchronous I/O 482

14.7 readv and writev Functions 483

14.8 readn and writen Functions 485

14.9 Memory-Mapped I/O 487

14.10 Summary 492

Chapter 15. Interprocess Communication 495

15.1 Introduction 495

15.2 Pipes 496

15.3 popen and pclose Functions 503

15.4 Coprocesses 510

15.5 FIFOs 514

15.6 XSI IPC 518

15.6.1 Identifiers and Keys 518

15.6.2 Permission Structure 520

15.6.3 Configuration Limits 521

15.6.4 Advantages and Disadvantages 521

15.7 Message Queues 522

15.8 Semaphores 527

15.9 Shared Memory 533

15.10 Client-Server Properties 541

15.11 Summary 543

Chapter 16. Network IPC: Sockets 545

16.1 Introduction 545

16.2 Socket Descriptors 546

16.3 Addressing 549

16.3.1 Byte Ordering 549

16.3.2 Address Formats 551

16.3.3 Address Lookup 553

16.3.4 Associating Addresses with Sockets 560

16.4 Connection Establishment 561

16.5 Data Transfer 565

16.6 Socket Options 579

16.7 Out-of-Band Data 581

16.8 Nonblocking and Asynchronous I/O 582

16.9 Summary 583

Chapter 17. Advanced IPC 585

17.1 Introduction 585

17.2 STREAMS-Based Pipes 585

17.2.1 Naming STREAMS Pipes 589

17.2.2 Unique Connections 590

17.3 UNIX Domain Sockets 594

17.3.1 Naming UNIX Domain Sockets 595

17.3.2 Unique Connections 597

17.4 Passing File Descriptors 601

17.4.1 Passing File Descriptors over STREAMS-Based Pipes 604

17.4.2 Passing File Descriptors over UNIX Domain Sockets 606

17.5 An Open Server, Version 1 615

17.6 An Open Server, Version 2 620

17.7 Summary 629

Chapter 18. Terminal I/O 631

18.1 Introduction 631

18.2 Overview 631

18.3 Special Input Characters 638

18.4 Getting and Setting Terminal Attributes 643

18.5 Terminal Option Flags 643

18.6 stty Command 651

18.7 Baud Rate Functions 652

18.8 Line Control Functions 653

18.9 Terminal Identification 654

18.10 Canonical Mode 660

18.11 Noncanonical Mode 663

18.12 Terminal Window Size 670

18.13 termcap, terminfo, and curses 672

18.14 Summary 673

Chapter 19. Pseudo Terminals 675

19.1 Introduction 675

19.2 Overview 675

19.3 Opening Pseudo-Terminal Devices 681

19.3.1 STREAMS-Based Pseudo Terminals 683

19.3.2 BSD-Based Pseudo Terminals 686

19.3.3 Linux-Based Pseudo Terminals 689

19.4 pty_fork Function 691

19.5 pty Program 694

19.6 Using the pty Program 698

19.7 Advanced Features 705

19.8 Summary 706

Chapter 20. A Database Library 709

20.1 Introduction 709

20.2 History 709

20.3 The Library 710

20.4 Implementation Overview 712

20.5 Centralized or Decentralized? 716

20.6 Concurrency 718

20.7 Building the Library 719

20.8 Source Code 719

20.9 Performance 747

20.10 Summary 752

Chapter 21. Communicating with a Network Printer 753

21.1 Introduction 753

21.2 The Internet Printing Protocol 753

21.3 The Hypertext Transfer Protocol 756

21.4 Printer Spooling 757

21.5 Source Code 758

21.6 Summary 805

Appendix A. Function Prototypes 807

Appendix B. Miscellaneous Source Code 843

B.1 Our Header File 843

B.2 Standard Error Routines 846

Appendix C. Solutions to Selected Exercises 853

Bibliography 885

Index 891