Section: POSIX Programmer's Manual (0P)
Updated: 2003
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NAME

tar.h - extended tar definitions  

SYNOPSIS

#include <tar.h>  

DESCRIPTION

The <tar.h> header shall define header block definitions as follows.

General definitions:
NameDescription    Value    
TMAGIC"ustar"    ustar plus null byte.    
TMAGLEN6    Length of the above.    
TVERSION"00"    00 without a null byte.    
TVERSLEN2    Length of the above.    

Typeflag field definitions:
NameDescription    Value
REGTYPE'0'    Regular file.
AREGTYPE'\0'    Regular file.
LNKTYPE'1'    Link.
SYMTYPE'2'    Symbolic link.
CHRTYPE'3'    Character special.
BLKTYPE'4'    Block special.
DIRTYPE'5'    Directory.
FIFOTYPE'6'    FIFO special.
CONTTYPE'7'    Reserved.

Mode field bit definitions (octal):
NameDescription    Value  
TSUID04000    Set UID on execution.  
TSGID02000    Set GID on execution.  
TSVTX01000    On directories, restricted deletion flag.     
TUREAD00400    Read by owner.  
TUWRITE00200    Write by owner special.  
TUEXEC00100    Execute/search by owner.  
TGREAD00040    Read by group.  
TGWRITE00020    Write by group.  
TGEXEC00010    Execute/search by group.  
TOREAD00004    Read by other.  
TOWRITE00002    Write by other.  
TOEXEC00001    Execute/search by other.  

The following sections are informative.  

APPLICATION USAGE

None.  

RATIONALE

None.  

FUTURE DIRECTIONS

None.  

SEE ALSO

The Shell and Utilities volume of IEEE Std 1003.1-2001, pax  

COPYRIGHT

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 .