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tar.h(0P) POSIX Programmer's Manual tar.h(0P)

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.

tar.h — extended tar definitions

#include <tar.h>

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.




The Shell and Utilities volume of POSIX.1‐2017, pax

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 .

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 .

2017 IEEE/The Open Group