--- /dev/null
+/* Extended tar format from POSIX.1.
+ Copyright (C) 1992-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by David J. MacKenzie.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _TAR_H
+#define _TAR_H 1
+
+#include <features.h>
+
+
+/* A tar archive consists of 512-byte blocks.
+ Each file in the archive has a header block followed by 0+ data blocks.
+ Two blocks of NUL bytes indicate the end of the archive. */
+
+/* The fields of header blocks:
+ All strings are stored as ISO 646 (approximately ASCII) strings.
+
+ Fields are numeric unless otherwise noted below; numbers are ISO 646
+ representations of octal numbers, with leading zeros as needed.
+
+ linkname is only valid when typeflag==LNKTYPE. It doesn't use prefix;
+ files that are links to pathnames >100 chars long can not be stored
+ in a tar archive.
+
+ If typeflag=={LNKTYPE,SYMTYPE,DIRTYPE} then size must be 0.
+
+ devmajor and devminor are only valid for typeflag=={BLKTYPE,CHRTYPE}.
+
+ chksum contains the sum of all 512 bytes in the header block,
+ treating each byte as an 8-bit unsigned value and treating the
+ 8 bytes of chksum as blank characters.
+
+ uname and gname are used in preference to uid and gid, if those
+ names exist locally.
+
+ Field Name Byte Offset Length in Bytes Field Type
+ name 0 100 NUL-terminated if NUL fits
+ mode 100 8
+ uid 108 8
+ gid 116 8
+ size 124 12
+ mtime 136 12
+ chksum 148 8
+ typeflag 156 1 see below
+ linkname 157 100 NUL-terminated if NUL fits
+ magic 257 6 must be TMAGIC (NUL term.)
+ version 263 2 must be TVERSION
+ uname 265 32 NUL-terminated
+ gname 297 32 NUL-terminated
+ devmajor 329 8
+ devminor 337 8
+ prefix 345 155 NUL-terminated if NUL fits
+
+ If the first character of prefix is '\0', the file name is name;
+ otherwise, it is prefix/name. Files whose pathnames don't fit in that
+ length can not be stored in a tar archive. */
+
+/* The bits in mode: */
+#define TSUID 04000
+#define TSGID 02000
+#if defined __USE_XOPEN || !defined __USE_XOPEN2K
+# define TSVTX 01000
+#endif
+#define TUREAD 00400
+#define TUWRITE 00200
+#define TUEXEC 00100
+#define TGREAD 00040
+#define TGWRITE 00020
+#define TGEXEC 00010
+#define TOREAD 00004
+#define TOWRITE 00002
+#define TOEXEC 00001
+
+/* The values for typeflag:
+ Values 'A'-'Z' are reserved for custom implementations.
+ All other values are reserved for future POSIX.1 revisions. */
+
+#define REGTYPE '0' /* Regular file (preferred code). */
+#define AREGTYPE '\0' /* Regular file (alternate code). */
+#define LNKTYPE '1' /* Hard link. */
+#define SYMTYPE '2' /* Symbolic link (hard if not supported). */
+#define CHRTYPE '3' /* Character special. */
+#define BLKTYPE '4' /* Block special. */
+#define DIRTYPE '5' /* Directory. */
+#define FIFOTYPE '6' /* Named pipe. */
+#define CONTTYPE '7' /* Contiguous file */
+ /* (regular file if not supported). */
+
+/* Contents of magic field and its length. */
+#define TMAGIC "ustar"
+#define TMAGLEN 6
+
+/* Contents of the version field and its length. */
+#define TVERSION "00"
+#define TVERSLEN 2
+
+#endif /* tar.h */
projects / cross.git / blobdiff