X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Ftar;a=blobdiff_plain;f=src%2Ftar.h;h=cb7d70cf62534c268b5e1b04f85d985ae6e78f31;hp=6d484087a2a80dcbbdd26bf54463be857ff2c288;hb=45ccda119355a1087450039a250359c1d0de0d08;hpb=d7af510d49cb574596d983533a8341f1c892ac8a diff --git a/src/tar.h b/src/tar.h index 6d48408..cb7d70c 100644 --- a/src/tar.h +++ b/src/tar.h @@ -1,21 +1,22 @@ /* GNU tar Archive Format description. - Copyright (C) 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 2000, 2001, 2003 Free Software Foundation, Inc. + Copyright 1988-1989, 1991-1997, 2000-2001, 2003-2007, 2012-2014 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 - Free Software Foundation; either version 2, or (at your option) any later - version. + This file is part of GNU tar. - This program 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 General - Public License for more details. + GNU tar is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. - 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. */ + GNU tar 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ /* tar Header Block, from POSIX 1003.1-1990. */ @@ -80,9 +81,9 @@ struct posix_header /* tar Header Block, GNU extensions. */ /* In GNU tar, SYMTYPE is for to symbolic links, and CONTTYPE is for - contiguous files, so maybe disobeying the `reserved' comment in POSIX + contiguous files, so maybe disobeying the "reserved" comment in POSIX header description. I suspect these were meant to be used this way, and - should not have really been `reserved' in the published standards. */ + should not have really been "reserved" in the published standards. */ /* *BEWARE* *BEWARE* *BEWARE* that the following information is still boiling, and may change. Even if the OLDGNU format description should be @@ -165,6 +166,7 @@ struct oldgnu_header 'A' Solaris Access Control List 'E' Solaris Extended Attribute File 'I' Inode only, as in 'star' + 'N' Obsolete GNU tar, for file names that do not fit into the main header. 'X' POSIX 1003.1-2001 eXtended (VU version) */ /* This is a dir entry that contains the names of files that were in the @@ -180,9 +182,6 @@ struct oldgnu_header /* This is the continuation of a file that began on another volume. */ #define GNUTYPE_MULTIVOL 'M' -/* For storing filenames that do not fit into the main header. */ -#define GNUTYPE_NAMES 'N' - /* This is for sparse files. */ #define GNUTYPE_SPARSE 'S' @@ -192,8 +191,7 @@ struct oldgnu_header /* Solaris extended header */ #define SOLARIS_XHDTYPE 'X' - -/* Jörg Schilling star header */ +/* J@"org Schilling star header */ struct star_header { /* byte offset */ @@ -221,7 +219,8 @@ struct star_header #define SPARSES_IN_STAR_HEADER 4 #define SPARSES_IN_STAR_EXT_HEADER 21 -struct star_in_header { +struct star_in_header +{ char fill[345]; /* 0 Everything that is before t_prefix */ char prefix[1]; /* 345 t_name prefix */ char fill2; /* 346 */ @@ -236,11 +235,13 @@ struct star_in_header { char xmagic[4]; /* 508 "tar" */ }; -struct star_ext_header { +struct star_ext_header +{ struct sparse sp[SPARSES_IN_STAR_EXT_HEADER]; char isextended; }; +/* END */ /* tar Header Block, overall structure. */ @@ -263,9 +264,25 @@ enum archive_format /* Information about a sparse file. */ struct sp_array +{ + off_t offset; + off_t numbytes; +}; + +struct xheader +{ + struct obstack *stk; + size_t size; + char *buffer; + uintmax_t string_length; +}; + +/* Information about xattrs for a file. */ +struct xattr_array { - off_t offset; - size_t numbytes; + char *xkey; + char *xval_ptr; + size_t xval_len; }; struct tar_stat_info @@ -273,31 +290,74 @@ struct tar_stat_info char *orig_file_name; /* name of file read from the archive header */ char *file_name; /* name of file for the current archive entry after being normalized. */ - int had_trailing_slash; /* nonzero if the current archive entry had a + bool had_trailing_slash; /* true if the current archive entry had a 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 */ + + char *cntx_name; /* SELinux context for the current archive entry. */ + + char *acls_a_ptr; /* Access ACLs for the current archive entry. */ + size_t acls_a_len; /* Access ACLs for the current archive entry. */ + + char *acls_d_ptr; /* Default ACLs for the current archive entry. */ + size_t acls_d_len; /* Default ACLs for the current archive entry. */ + struct stat stat; /* regular filesystem stat */ - /* Nanosecond parts of file timestamps (if available) */ - unsigned long atime_nsec; - unsigned long mtime_nsec; - unsigned long ctime_nsec; - + /* STAT doesn't always have access, data modification, and status + change times in a convenient form, so store them separately. */ + struct timespec atime; + struct timespec mtime; + struct timespec ctime; + 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 */ - + bool is_sparse; /* Is the file sparse */ + + /* For sparse files: */ + unsigned sparse_major; + unsigned sparse_minor; 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; + struct sp_array *sparse_map; + + size_t xattr_map_size; /* Size of the xattr map */ + struct xattr_array *xattr_map; + + /* Extended headers */ + struct xheader xhdr; + + /* For dumpdirs */ + bool is_dumpdir; /* Is the member a dumpdir? */ + bool skipped; /* The member contents is already read + (for GNUTYPE_DUMPDIR) */ + char *dumpdir; /* Contents of the dump directory */ + + /* Parent directory, if creating an archive. This is null if the + file is at the top level. */ + struct tar_stat_info *parent; + + /* Directory stream. If this is not null, it is in control of FD, + and should be closed instead of FD. */ + DIR *dirstream; + + /* File descriptor, if creating an archive, and if a directory or a + regular file or a contiguous file. + + It is zero if no file descriptor is available, either because it + was never needed or because it was open and then closed to + conserve on file descriptors. (Standard input is never used + here, so zero cannot be a valid file descriptor.) + + It is negative if it could not be reopened after it was closed. + Negate it to find out what errno was when the reopen failed. */ + int fd; }; union block @@ -310,5 +370,3 @@ union block struct star_in_header star_in_header; struct star_ext_header star_ext_header; }; - -/* End of Format description. */