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<dirent.h>(0P)		   POSIX Programmer's Manual		<dirent.h>(0P)

       dirent.h - format of directory entries

       #include <dirent.h>

       The internal format of directories is unspecified.

       The <dirent.h> header shall define the following type:

       DIR    A type representing a directory stream.

       It  shall also define the structure dirent which shall include the fol‐
       lowing members:

	      ino_t  d_ino	 File serial number.

	      char   d_name[]	 Name of entry.

       The type ino_t shall be defined as described in <sys/types.h> .

       The character array d_name is of unspecified size, but  the  number  of
       bytes preceding the terminating null byte shall not exceed {NAME_MAX}.

       The following shall be declared as functions and may also be defined as
       macros. Function prototypes shall be provided.

	      int	     closedir(DIR *);
	      DIR	    *opendir(const char *);
	      struct dirent *readdir(DIR *);

	      int	     readdir_r(DIR *restrict, struct dirent *restrict,
				 struct dirent **restrict);

	      void	     rewinddir(DIR *);

	      void	     seekdir(DIR *, long);
	      long	     telldir(DIR *);

       The following sections are informative.


       Information similar to that in the <dirent.h> header is contained in  a
       file <sys/dir.h> in 4.2 BSD and 4.3 BSD. The equivalent in these imple‐
       mentations of struct dirent from this volume of IEEE Std 1003.1-2001 is
       struct  direct.	The  filename was changed because the name <sys/dir.h>
       was also used  in  earlier  implementations  to	refer  to  definitions
       related	to  the older access method; this produced name conflicts. The
       name  of	 the  structure	  was	changed	  because   this   volume   of
       IEEE Std 1003.1-2001  does  not completely define what is in the struc‐
       ture, so it could be different  on  some	 implementations  from	struct

       The  name of an array of char of an unspecified size should not be used
       as an lvalue. Use of:


       is incorrect; use:



       The array of char d_name is not a fixed size. Implementations may  need
       to  declare  struct  dirent with an array size for d_name of 1, but the
       actual number of characters provided matches (or only slightly exceeds)
       the length of the filename.


       <sys/types.h>,  the  System  Interfaces volume of IEEE Std 1003.1-2001,
       closedir(), opendir(), readdir(), readdir_r(), rewinddir(),  seekdir(),

       Portions	 of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating	System	Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003	by  the	 Institute  of
       Electrical  and	Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group		     2003			<dirent.h>(0P)

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