Linux System Programming（簡體書）

Foreword
Preface
1.Introduction and Essential Concepts
System Programming
Why Learn System Programming
Cornerstones of System Programming
System Calls
The C Library
The C Compiler
APIs and ABIs
APIs
ABIs
Standards
POSIX and SUS History
C Language Standards
Linux and the Standards
This Book and the Standards
Concepts of Linux Programming
Files and the Filesystem
Processes
Users and Groups
Permissions
Signals
Interprocess Communication
Headers
Error Handling
Getting Started with System Programming
2.File I／O
Opening Files
The open（） System Call
Owners of New Files
Permissions of New Files
The creat0 Function
Return Values and Error Codes
Reading via read（）
Return Values
Reading All the Bytes
Nonblocking Reads
Other Error Values
Size Limits on read（）
Writing with write（）
Partial Writes
Append Mode
Nonblocking Writes
Other Error Codes
Size Limits on write（）
Behavior of write（）
Synchronized I／O
fsync0 and fdatasync0
sync0
The O SYNC Flag
O_DSYNC and O_RSYNC
Direct I／O
Closing Files
Error Values
Seeking with lseek0
Seeking Past the End of a File
Error Values
Limitations
Positional Reads and Writes
Error Values
Truncating Files
Multiplexed I／O
select（）
poll（）
poll（） Versus select（）
Kernel Internals
The Virtual Filesystem
The Page Cache
Page Writeback
Conclusion
3.Buffered I／O
User—Buffered I／O
Block Size
Standard I／O
File Pointers
Opening Files
Modes
Opening a Stream via File Descriptor
Closing Streams
Closing All Streams
Reading from a Stream
Reading a Character at a Time
Reading an Entire Line
Reading Binary Data
Writing to a Stream
Writing a Single Character
Writing a String of Characters
Writing Binary Data
Sample Program Using Buffered I／O
Seeking a Stream
Obtaining the Current Stream Position
Flushing a Stream
Errors and End—of—File
Obtaining the Associated File Descriptor
Controlling the Buffering
Thread Safety
Manual File Locking
Unlocked Stream Operations
Critiques of Standard I／O
Conclusion
4.Advanced File I／O
Scatter／Gather I／O
readv（） and writev（）
Event Poll
Creating a New Epolllnstance
Controlling Epoll
Waiting for Events with Epoll
Edge— Versus Level—Triggered Events
Mapping Files into Memory
mmap（）
munmap（）
Mapping Example
Advantages of mmap0
Disadvantages ofmmap（）
Resizing a Mapping
Changing the Protection of a Mapping
Synchronizing a File with a Mapping
Giving Advice on a Mapping
Advice for Normal File I／O
The posix_fadvise（） System Call
The readahead0 System Call
Advice Is Cheap
Synchronized， Synchronous， and Asynchronous Operations
Asynchronous I／O
I／O Schedulers and I／O Performance
Disk Addressing
The Life of an I／O Scheduler
Helping Out Reads
Selecting and Configuring Your I／O Scheduler
Optimzing I／O Performance
Conclusion
5.Process Management
Programs， Processes， and Threads
The Process ID
Process ID Allocation
The Process Hierarchy
pid_t
Obtaining the Process ID and Parent Process ID
Running a New Process
The Exec Family of Calls
The fork（） System Call
Terminating a Process
Other Ways to Terminate
atexit（）
on_ exit（）
SIGCHLD
Waiting for Terminated Child Processes
Waiting for a Specific Process
Even More Waiting Versatility
BSD Wants to Play： wait3（） and wait4（）
Launching and Waiting for a New Process
Zombies
Users and Groups
Real， Effective， and Saved User and Group IDs
Changing the Real or Saved User or Group ID
Changing the Effective User or Group ID
Changing the User and Group IDs， BSD Style
Changing the User and Group IDs， HP—UX Style
Preferred User／Group ID Manipulations
Support for Saved User IDs
Obtaining the User and Group IDs
Sessions and Process Groups
Session System Calls
Process Group System Calls
Obsolete Process Group Functions
Daemons
Conclusion
……
6.Advanced Process Management
7.Threading
8.File and Directory Management
9.MemoryManagement
10.Signals
11.Time
A.GCC Extensions to the C Language
B.Bibliography
Index