close file descriptor

FILE descriptor and FILE, FILE descriptor FILE1. file descriptor (important) In Linux, everything can be viewed as a file, which can be divided into common files, directory files, link files, and device files. File descriptor is an index created by

File descriptor and Server programming descriptor in Server programming In linux, everything is a file, and all underlying layers are blocked through the Virtual File System (VFS) mechanism. Users can perform operations on different drivers through

This article was reproduced from: http://blog.csdn.net/tennysonsky/article/details/45870459DUP () and dup2 () are two very useful system calls that are used to copy the descriptor of a file so that the new file descriptor also identifies the file

Reprint please indicate source: http://blog.csdn.net/cywosp/article/details/389652391. OverviewIn the Linux system, everything can be considered as a file, and the file can be divided into: Ordinary files, folder files, linked files and device files.

VC + + file descriptor and kernel file handle handle This article describes the C language in VC + + using the code file descriptor (file descriptor), the relationship between the kernel file handle handle, and the conversion function between the

File descriptor and Kernel File handle of VC ++ This article describes the relationship between C language in VC ++ and the kernel file handle using the code file descriptor (file descriptor), and the conversion function _ get_osfhandle between the

Each process has a task_struct struct in the Linux kernel to maintain process-related information, known as process descriptor. In operating system theory, it is called a process control block (PCB, process control block ). Task_struct has a pointer

Input/output is the process of copying data between the primary and external devices. Device> memory (input operation) Memory-> device (output Operation) Advanced I/O The standard I/O library provided by ansi c is called Advanced I/O, also known

Http://blog.sina.com.cn/s/blog_67b74aea01018ycx.htmlThe Linux (Unix) process is intricately related to files, and this tutorial attempts to elaborate on this issue. include: 1, Linux multi/single process and multi/single file on the use of file

In the Linux general-purpose I/O model,I/OThe Action series function (System call) is expanded around an integer called a file descriptor. This begs the question: what does this integer mean? Does a value represent a file? Just pass an integer in