182 lines
5.8 KiB
C
182 lines
5.8 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD: head/lib/libarchive/archive_entry_private.h 201096 2009-12-28 02:41:27Z kientzle $
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*/
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#ifndef __LIBARCHIVE_BUILD
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#error This header is only to be used internally to libarchive.
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#endif
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#ifndef ARCHIVE_ENTRY_PRIVATE_H_INCLUDED
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#define ARCHIVE_ENTRY_PRIVATE_H_INCLUDED
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#include "archive_acl_private.h"
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#include "archive_string.h"
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struct ae_xattr {
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struct ae_xattr *next;
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char *name;
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void *value;
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size_t size;
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};
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struct ae_sparse {
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struct ae_sparse *next;
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int64_t offset;
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int64_t length;
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};
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/*
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* Description of an archive entry.
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*
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* Basically, this is a "struct stat" with a few text fields added in.
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*
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* TODO: Add "comment", "charset", and possibly other entries
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* that are supported by "pax interchange" format. However, GNU, ustar,
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* cpio, and other variants don't support these features, so they're not an
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* excruciatingly high priority right now.
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*
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* TODO: "pax interchange" format allows essentially arbitrary
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* key/value attributes to be attached to any entry. Supporting
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* such extensions may make this library useful for special
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* applications (e.g., a package manager could attach special
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* package-management attributes to each entry). There are tricky
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* API issues involved, so this is not going to happen until
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* there's a real demand for it.
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*
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* TODO: Design a good API for handling sparse files.
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*/
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struct archive_entry {
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struct archive *archive;
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/*
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* Note that ae_stat.st_mode & AE_IFMT can be 0!
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*
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* This occurs when the actual file type of the object is not
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* in the archive. For example, 'tar' archives store
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* hardlinks without marking the type of the underlying
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* object.
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*/
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/*
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* We have a "struct aest" for holding file metadata rather than just
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* a "struct stat" because on some platforms the "struct stat" has
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* fields which are too narrow to hold the range of possible values;
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* we don't want to lose information if we read an archive and write
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* out another (e.g., in "tar -cf new.tar @old.tar").
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*
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* The "stat" pointer points to some form of platform-specific struct
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* stat; it is declared as a void * rather than a struct stat * as
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* some platforms have multiple varieties of stat structures.
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*/
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void *stat;
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int stat_valid; /* Set to 0 whenever a field in aest changes. */
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struct aest {
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int64_t aest_atime;
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uint32_t aest_atime_nsec;
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int64_t aest_ctime;
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uint32_t aest_ctime_nsec;
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int64_t aest_mtime;
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uint32_t aest_mtime_nsec;
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int64_t aest_birthtime;
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uint32_t aest_birthtime_nsec;
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int64_t aest_gid;
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int64_t aest_ino;
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uint32_t aest_nlink;
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uint64_t aest_size;
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int64_t aest_uid;
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/*
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* Because converting between device codes and
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* major/minor values is platform-specific and
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* inherently a bit risky, we only do that conversion
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* lazily. That way, we will do a better job of
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* preserving information in those cases where no
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* conversion is actually required.
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*/
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int aest_dev_is_broken_down;
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dev_t aest_dev;
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dev_t aest_devmajor;
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dev_t aest_devminor;
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int aest_rdev_is_broken_down;
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dev_t aest_rdev;
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dev_t aest_rdevmajor;
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dev_t aest_rdevminor;
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} ae_stat;
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int ae_set; /* bitmap of fields that are currently set */
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#define AE_SET_HARDLINK 1
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#define AE_SET_SYMLINK 2
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#define AE_SET_ATIME 4
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#define AE_SET_CTIME 8
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#define AE_SET_MTIME 16
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#define AE_SET_BIRTHTIME 32
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#define AE_SET_SIZE 64
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#define AE_SET_INO 128
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#define AE_SET_DEV 256
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/*
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* Use aes here so that we get transparent mbs<->wcs conversions.
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*/
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struct archive_mstring ae_fflags_text; /* Text fflags per fflagstostr(3) */
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unsigned long ae_fflags_set; /* Bitmap fflags */
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unsigned long ae_fflags_clear;
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struct archive_mstring ae_gname; /* Name of owning group */
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struct archive_mstring ae_hardlink; /* Name of target for hardlink */
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struct archive_mstring ae_pathname; /* Name of entry */
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struct archive_mstring ae_symlink; /* symlink contents */
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struct archive_mstring ae_uname; /* Name of owner */
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/* Not used within libarchive; useful for some clients. */
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struct archive_mstring ae_sourcepath; /* Path this entry is sourced from. */
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#define AE_ENCRYPTION_NONE 0
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#define AE_ENCRYPTION_DATA 1
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#define AE_ENCRYPTION_METADATA 2
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char encryption;
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void *mac_metadata;
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size_t mac_metadata_size;
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/* ACL support. */
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struct archive_acl acl;
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/* extattr support. */
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struct ae_xattr *xattr_head;
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struct ae_xattr *xattr_p;
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/* sparse support. */
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struct ae_sparse *sparse_head;
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struct ae_sparse *sparse_tail;
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struct ae_sparse *sparse_p;
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/* Miscellaneous. */
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char strmode[12];
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};
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#endif /* ARCHIVE_ENTRY_PRIVATE_H_INCLUDED */
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