X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Ftar.h;h=3e958ec80086a526560e4f31c33486cc528a5a06;hb=d659cbaccdc1f3279c49107cf15f15a639738529;hp=9ba0a46be8a6b0b23d7c5d1455ca3e4d10fba155;hpb=33b63ebe94b8a2dc2cb8fb907d8b7c16591b05bc;p=chaz%2Ftar diff --git a/src/tar.h b/src/tar.h index 9ba0a46..3e958ec 100644 --- a/src/tar.h +++ b/src/tar.h @@ -1,7 +1,7 @@ /* GNU tar Archive Format description. Copyright (C) 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 2000, 2001, 2003 Free Software Foundation, Inc. + 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the @@ -15,7 +15,7 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., - 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* tar Header Block, from POSIX 1003.1-1990. */ @@ -42,29 +42,6 @@ struct posix_header /* 500 */ }; -struct star_header -{ /* byte offset */ - char name[100]; /* 0 */ - char mode[8]; /* 100 */ - char uid[8]; /* 108 */ - char gid[8]; /* 116 */ - char size[12]; /* 124 */ - char mtime[12]; /* 136 */ - char chksum[8]; /* 148 */ - char typeflag; /* 156 */ - char linkname[100]; /* 157 */ - char magic[6]; /* 257 */ - char version[2]; /* 263 */ - char uname[32]; /* 265 */ - char gname[32]; /* 297 */ - char devmajor[8]; /* 329 */ - char devminor[8]; /* 337 */ - char prefix[131]; /* 345 */ - char atime[12]; /* 476 */ - char ctime[12]; /* 488 */ - /* 500 */ -}; - #define TMAGIC "ustar" /* ustar and a null */ #define TMAGLEN 6 #define TVERSION "00" /* 00 and no null */ @@ -162,15 +139,17 @@ struct sparse_header struct oldgnu_header { /* byte offset */ char unused_pad1[345]; /* 0 */ - char atime[12]; /* 345 */ - char ctime[12]; /* 357 */ - char offset[12]; /* 369 */ - char longnames[4]; /* 381 */ + char atime[12]; /* 345 Incr. archive: atime of the file */ + char ctime[12]; /* 357 Incr. archive: ctime of the file */ + char offset[12]; /* 369 Multivolume archive: the offset of + the start of this volume */ + char longnames[4]; /* 381 Not used */ char unused_pad2; /* 385 */ struct sparse sp[SPARSES_IN_OLDGNU_HEADER]; /* 386 */ - char isextended; /* 482 */ - char realsize[12]; /* 483 */ + char isextended; /* 482 Sparse file: Extension sparse header + follows */ + char realsize[12]; /* 483 Sparse file: Real size*/ /* 495 */ }; @@ -210,6 +189,60 @@ struct oldgnu_header /* This file is a tape/volume header. Ignore it on extraction. */ #define GNUTYPE_VOLHDR 'V' +/* Solaris extended header */ +#define SOLARIS_XHDTYPE 'X' + + +/* Jörg Schilling star header */ + +struct star_header +{ /* byte offset */ + char name[100]; /* 0 */ + char mode[8]; /* 100 */ + char uid[8]; /* 108 */ + char gid[8]; /* 116 */ + char size[12]; /* 124 */ + char mtime[12]; /* 136 */ + char chksum[8]; /* 148 */ + char typeflag; /* 156 */ + char linkname[100]; /* 157 */ + char magic[6]; /* 257 */ + char version[2]; /* 263 */ + char uname[32]; /* 265 */ + char gname[32]; /* 297 */ + char devmajor[8]; /* 329 */ + char devminor[8]; /* 337 */ + char prefix[131]; /* 345 */ + char atime[12]; /* 476 */ + char ctime[12]; /* 488 */ + /* 500 */ +}; + +#define SPARSES_IN_STAR_HEADER 4 +#define SPARSES_IN_STAR_EXT_HEADER 21 + +struct star_in_header { + char fill[345]; /* 0 Everything that is before t_prefix */ + char prefix[1]; /* 345 t_name prefix */ + char fill2; /* 346 */ + char fill3[8]; /* 347 */ + char isextended; /* 355 */ + struct sparse sp[SPARSES_IN_STAR_HEADER]; /* 356 */ + char realsize[12]; /* 452 Actual size of the file */ + char offset[12]; /* 464 Offset of multivolume contents */ + char atime[12]; /* 476 */ + char ctime[12]; /* 488 */ + char mfill[8]; /* 500 */ + char xmagic[4]; /* 508 "tar" */ +}; + +struct star_ext_header { + struct sparse sp[SPARSES_IN_STAR_EXT_HEADER]; + char isextended; +}; + + + /* tar Header Block, overall structure. */ /* tar files are made in basic blocks of this size. */ @@ -220,11 +253,21 @@ enum archive_format DEFAULT_FORMAT, /* format to be decided later */ V7_FORMAT, /* old V7 tar format */ OLDGNU_FORMAT, /* GNU format as per before tar 1.12 */ - POSIX_FORMAT, /* restricted, pure POSIX format */ + USTAR_FORMAT, /* POSIX.1-1988 (ustar) format */ + POSIX_FORMAT, /* POSIX.1-2001 format */ STAR_FORMAT, /* Star format defined in 1994 */ - GNU_FORMAT /* POSIX format with GNU extensions */ + GNU_FORMAT /* Same as OLDGNU_FORMAT with one exception: + see FIXME note for to_chars() function + (create.c:189) */ }; +/* Information about a sparse file. */ +struct sp_array + { + off_t offset; + size_t numbytes; + }; + struct tar_stat_info { char *orig_file_name; /* name of file read from the archive header */ @@ -234,11 +277,20 @@ struct tar_stat_info trailing slash before it was normalized. */ char *link_name; /* name of link for the current archive entry. */ - unsigned int devminor; /* device minor number */ - unsigned int devmajor; /* device major number */ char *uname; /* user name of owner */ char *gname; /* group name of owner */ - struct stat stat; /* regular filesystem stat */ + struct stat stat; /* regular filesystem stat */ + + off_t archive_file_size; /* Size of file as stored in the archive. + Equals stat.st_size for non-sparse files */ + + bool is_sparse; /* Is the file sparse */ + + size_t sparse_map_avail; /* Index to the first unused element in + sparse_map array. Zero if the file is + not sparse */ + size_t sparse_map_size; /* Size of the sparse map */ + struct sp_array *sparse_map; }; union block @@ -248,6 +300,8 @@ union block struct star_header star_header; struct oldgnu_header oldgnu_header; struct sparse_header sparse_header; + struct star_in_header star_in_header; + struct star_ext_header star_ext_header; }; /* End of Format description. */