file offset

The kernel uses three data structures to represent open files, namely the File descriptor table, the file table, and the V-node tables. The relationship between them determines the possible impact a process might have on another process in terms of

As you all know, under Linux, everything is file, so familiar with Linux file operation, Linux is the basis for programming. Cut the crap, get into the subject. In Linux, the file descriptor is used to represent the common file of the device file,

  Author: Zhuang Xiaoli (liigo), 2010/7/5 This article first address: http://blog.csdn.net/liigo/archive/2010/07/04/5712547.aspx Reprinted please indicate the source: http://blog.csdn.net/liigo     Since the release of the easy language 5.0 static

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, directory files, linked files and device

Relationship between file descriptors and open files in LinuxRelationship between file descriptors and open files in LinuxGuideThe kernel uses file descriptor to access files. The file descriptor is a non-negative integer. When an existing file is

[Linux & Unix -- open/close/write/read System Call], linux operating system If you have any shortcomings, please kindly advise. Reprinted Please note: @ CSU-Max Series of blog posts: Linux and Unix -- file descriptors and permissions Second play

RVA is the abbreviation of relative virtual address. As its name suggests, RVA is a "relative" address, or "offset ", most of the address-related fields in various data structures of PE files are represented by RVA. Accurately speaking, RVA is the

Lien0000342014-08-251. file descriptor For the kernel, all opened files are referenced through the file descriptor. The file descriptor is a non-negative integer. When an existing file is opened or a new file is created, the kernel returns a file

1. file descriptor The file descriptor is a non-negative integer. When an existing file is opened or a new file is created, the kernel returns a file descriptor to the process. The Unix System shell uses file descriptor 0 to associate with the

I have been reading books and taking some notes recently. The operating system used in this article is centos7.0. If you do not want to install a dual-system, you can install a virtual machine, refer to

1. file descriptor In the kernel, each opened file is a file descriptor, and each file descriptor is a non-negative integer from 0 to open_max. In Unix systems, 0 is always associated with the standard input, 1 is associated with the standard

With the Man 2 Lseek you can see the help documentation for the system functions Lseek functions in Linux, and in order to learn better, I translate these important things.1 NAME2Lseek-reposition read/write file Offset//Resets the offset of a read

I. File types included under Linux 1. Common Files 2. directory file 3. Character special Files 4. Block Special file 5.FIFO 6. Socket 7. Symbolic connectionTwo. Access file control for Linuxchmod using syntax$ chmod [options] mode[,mode] file1

Before there was a need to empty open files and then re-write the requirements, but using ftruncate (FD, 0), and did not achieve the effect, but the file head has ' "", the length is larger than expected. The reason is that I did not use Lseek to

Preface: The initial shell was developed in infectious virus technology, with the goal of compressing or encrypting the shell. This article mainlyThis section briefly introduces and summarizes the implementation of Win32 PE and Linux elf shelling

Unix elf File Format and virus analysis ★IntroductionThis article describes the Unix virus mechanism, implementation, and ELF file format. This article briefly describes the Unix virus detection and anti-detection technologies, and provides some

The following functions are used in File Memory ing: 1) createfilemapping2) flushviewoffile3) mapviewoffile4) mapviewoffileex5) mapviewoffilevlm6) openfilemapping7) unmapviewoffile8) unmapviewoffilevlm Function Description: "See the end of this

When the current PE file is started by modifying the content of the target PE file, a dialog box is displayed. The content and title of the dialog box are specified by the user.Click to generate the qq_box.exe file in the qq.exedirectory.

1. the kernel uses three data structures to indicate opened files. The relationship between them determines the impact of one process on another process in file sharing. (1) each process has a record item (task_struct) in the progress table,

PE Study Notes PE means portable executable (portable execution body ). Overall hierarchical distribution of PE file structure: --------------| Dos MZ header || -------------- || Dos Stub || -------------- || PE Header || -------------- || Section