dirent

The dir struct under Linux is defined as1 struct__dirstream2 {3 void*__fd;4 Char*__data;5 int__entry_data;6 Char*__ptr;7 int__entry_ptr;8 size_t __allocation;9 size_t __size;Ten __libc_lock_define (, __lock) One }; Atypedefstruct__dirstream DIR;The struct holds the directory-related information, such as opendir (const char *), and returns the type of Dir *;The functions used in this structure are also:1 struct dirent *readdir

: struct Dirent *readdir (DIR *DP); void Rewinddir (DIR *dp); int Closedir (DIR *DP); Long Telldir (DIR *DP); void Seekdir (DIR *dp,long Loc); With regard to the DIR structure, we know so much that we don't have to go into the structural members.Then there is the dirent structure, first of all we need to figure out the concept of directory file: This file co

1. Store the file information in the directory (file name, extension, etc.)#include struct Dirent{long D_ino; */inode Number Index node * /off_t d_off; */* offset to this dirent offsets in the catalog file * /unsigned short d_reclen; * * length of this d_name filename long * /unsigned char d_type; * * The type of d_name file type * /Char d_name [name_max+1];/* file name (null-terminated) filename, maximum 2

The dir struct is similar to file and is an internal structure struct __dirstream { void *__fd; Char *__data; int __entry_data; Char *__ptr; int __entry_ptr; size_t __allocation; size_t __size; __libc_lock_define (, __lock) }; typedef struct __DIRSTREAM DIR;struct dirent{ ino_t D_ino; /*inode number*/ off_t D_off; /*offset to the next dirent*/ unsigned short d_reclen; /*length

Description of the last member d_name of the folder attribute struct dirent (refer to the online document) to store the file name. Some UNIX-like systems also use the following definition: Struct dirent {Ino_t d_ino;Off_t d_off;Unsigned short d_reclen;Char d_name [1];}; Obviously, for an array used to store strings, one byte space can only store one Terminator '\ 0'. The purpose of this operation is to us

Linux under struct dirent,dir,struct stat use exampleIn the following example, read the folder in the directory, file, and output some property values, specific related structure definition, can refer to:http://www.liweifan.com/2012/05/13/linux-system-function-files-operation/Http://www.360doc.com/content/11/0110/16/4559801_85509847.shtml/** linux struct dirent,dir,struct stat* date:2015-7-16* author:zhang*

tag: Io OS uses the AR file SP Div on CTI # Include struct dirent/DIR

A New Method for hiding files in LinuxAuthor: wztEMail: wzt@xsec.orgSite: http://www.xsec.org http://hi.baidu.com/wzt85Date: 2008-9-23 I. Overview Currently, the common method for hiding files is hooksys_getdents64 system call. The general process is to call the originalSys_getdents64 is called by the system and then filtered in the buf. Modifying sys_call_table is a primitive rk technology,When it comes to a better administrator, it is basically possible to detect it in gdb vmlinux. To be more

The code is as follows Copy Code static int (*true_scandir) (const char *,struct dirent * * *,Int (*) (const struct dirent *),Int (*) (const void *,const void *));Tostatic int (*true_scandir) (const char *,struct dirent * * *,Int (*) (const struct dirent *),Int (*) (const struct

);The meaning of mode will be set according to the relevant definition in the O_CREAT option called by the Open system, and, of course, it is subject to the umask setting condition.int rmdir (const char *path);4. Directory Scan:The scanning operation of the directory and the operation of the file is a bit similar, all through the operation of the directory structure, this structure is maintained by the system, in general, users do not change the directory structure of the corresponding fields:st

embedded Linux system Programming (v)--directory file functions directories in Linux are also files, and directory manipulation functions are standard IO library functions. The main functions are as follows:#include #include DIR *opendir (const char *name);DIR *fdopendir (int fd);Successfully returns a pointer to the directory stream, fails to return NULL, and sets the errno global variable. #include struct Dirent *readdir (DIR *dirp);A pointer to the

returned-1.5. Opendir Open a directory (man 3 opendir view)DIR *opendir (const char *name); //directory NameDIR *fdopendir (int fd); //File descriptorReturn value: The successful return of the directory pointer (similar to the file structure), and the failure to return null.6. Readdir Read directory (man 3 Readdir view)struct Dirent *readdir (DIR *dirp); //dirp is a dir struct pointer, typically obtained by the return value of OpendirReturn value:

Struct dirent { ....... ....... Char A [1];} Here char a [1]; the length is 1. It is generally considered that the character array can only store '/0', But here a [1] declares Placed at the end of the struct, It is a variable-length data structure, which facilitates access to the address behind the struct, such: [Copy to clipboard] [-] Code: struct dirent { Int Len; Char A [0]; }; Struct

*opendir (constchar *name); // struct dirent *readdir (DIR *dir); // A struct pointer that reads a directory of information and returns the item information int closedir (DIR *dir); // Close the catalog fileOpendir () is used to open the directory specified by the parameter name and returns the directory stream of the dir* pattern, similar to the file Operation function open (), which is followed by the use of this return

*name) Feature: Opens the directory specified by name, returns a pointer, and fails to return NULL. Related header file: Sys/types.h dirent.h struct dirent* readdir (dir* DIR): Get specific content in an open Directory Related header file: Sys/types.h dirent.h Catalog file list Get module get all file list in file directory to save list of files dirlink* Get_dir_detail (char* dirname) { dir* dir; struct d