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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" │ Used in the magic field in the ustar │
│ │ │ header block, including the trailing │
│ │ │ null byte. │
│TMAGLEN │ 6 │ Length in octets of the magic field. │
│TVERSION │ "00" │ Used in the version field in the ustar │
│ │ │ header block, excluding the trailing │
│ │ │ null byte. │
│TVERSLEN │ 2 │ Length in octets of the version field. │
└───────────┴────────────┴────────────────────────────────────────┘
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.1‐2017, pax
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1-2017, Standard for Information Technology -- Portable Operating System Interface
(POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 .
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 .