Provided by: manpages-posix-dev_2013a-2_all 
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of
this interface may differ (consult the corresponding Linux manual page for details of
Linux behavior), or the interface may not be implemented on Linux.
NAME
tar.h — extended tar definitions
SYNOPSIS
#include <tar.h>
DESCRIPTION
The <tar.h> header shall define the following symbolic constants with the indicated
values.
General definitions:
┌────────────────┬─────────────────┬──────────────────────────────────────────┐
│ Name │ Value │ Description │
├────────────────┼─────────────────┼──────────────────────────────────────────┤
│TMAGIC │ "ustar" │ ustar plus null byte. │
│TMAGLEN │ 6 │ Length of the above. │
│TVERSION │ "00" │ 00 without a null byte. │
│TVERSLEN │ 2 │ Length of the above. │
└────────────────┴─────────────────┴──────────────────────────────────────────┘
Typeflag field definitions:
┌────────────────┬─────────────────┬──────────────────────────────────────────┐
│ Name │ Value │ Description │
├────────────────┼─────────────────┼──────────────────────────────────────────┤
│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):
┌────────────────┬─────────────────┬──────────────────────────────────────────────┐
│ Name │ Value │ Description │
├────────────────┼─────────────────┼──────────────────────────────────────────────┤
│TSUID │ 04000 │ Set UID on execution. │
│TSGID │ 02000 │ Set GID on execution. │
│TSVTX │ 01000 │ On directories, restricted deletion flag. │
│TUREAD │ 00400 │ Read by owner. │
│TUWRITE │ 00200 │ Write by owner special. │
│TUEXEC │ 00100 │ Execute/search by owner. │
│TGREAD │ 00040 │ Read by group. │
│TGWRITE │ 00020 │ Write by group. │
│TGEXEC │ 00010 │ Execute/search by group. │
│TOREAD │ 00004 │ Read by other. │
│TOWRITE │ 00002 │ Write by other. │
│TOEXEC │ 00001 │ 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 POSIX.1‐2008, pax
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2013 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .
Any typographical or formatting errors that appear in this page are most likely to have
been introduced during the conversion of the source files to man page format. To report
such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .