Directory functions

OK. First things first. These functions are NOT part of the ANSI standard library. They may not be supported on your platform.

Here is a quick summary of each function, they are listed in the order in which you may want to execute them.

opendir Open a directory stream.

readdir read the current entry in the stream.

scandir Find an entry in a direcory.

seekdir Jump to a directory offset.

telldir Return the current location within the directory stream.

rewinddir Return to the start of the directory stream.

closedir Close a directory.

 Library: dirent.h
 Prototype: DIR *opendir(const char *name);
 struct dirent *readdir(DIR *dir);
 int scandir(const char *dir, struct dirent ***namelist, 
 int (*select)(const struct dirent *),
 int (*compar)(const void *, const void *));
		
	 void seekdir(DIR *dir, off_t offset);
	 off_t telldir(DIR *dir);
	 void rewinddir(DIR *dir);
	 int closedir(DIR *dir);

The dirent structure does not seem to be documented in the man pages, so here it is.

	struct dirent 
	{
 long d_ino;
 	 off_t d_off;
 	 unsigned short d_reclen;
 	 char d_name[NAME_MAX+1];
	};

example program using opendir, readdir and closedir.

man Pages:

opendir readdir scandir seekdir telldir rewinddir closedir

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Martin Leslie

Directory functions

See Also:

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