contrib/libarchive-2/libarchive/archive_entry_private.h

   1 /*-
   2  * Copyright (c) 2003-2007 Tim Kientzle
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD: src/lib/libarchive/archive_entry_private.h,v 1.3 2008/03/31 06:24:39 kientzle Exp $
  26  */
  27
  28 #ifndef ARCHIVE_ENTRY_PRIVATE_H_INCLUDED
  29 #define ARCHIVE_ENTRY_PRIVATE_H_INCLUDED
  30
  31 #include "archive_string.h"
  32
  33 /*
  34  * Handle wide character (i.e., Unicode) and non-wide character
  35  * strings transparently.
  36  */
  37
  38 struct aes {
  39         struct archive_string aes_mbs;
  40         struct archive_string aes_utf8;
  41         const wchar_t *aes_wcs;
  42         /* Bitmap of which of the above are valid.  Because we're lazy
  43          * about malloc-ing and reusing the underlying storage, we
  44          * can't rely on NULL pointers to indicate whether a string
  45          * has been set. */
  46         int aes_set;
  47 #define AES_SET_MBS 1
  48 #define AES_SET_UTF8 2
  49 #define AES_SET_WCS 4
  50 };
  51
  52 struct ae_acl {
  53         struct ae_acl *next;
  54         int     type;                   /* E.g., access or default */
  55         int     tag;                    /* E.g., user/group/other/mask */
  56         int     permset;                /* r/w/x bits */
  57         int     id;                     /* uid/gid for user/group */
  58         struct aes name;                /* uname/gname */
  59 };
  60
  61 struct ae_xattr {
  62         struct ae_xattr *next;
  63
  64         char    *name;
  65         void    *value;
  66         size_t  size;
  67 };
  68
  69 /*
  70  * Description of an archive entry.
  71  *
  72  * Basically, this is a "struct stat" with a few text fields added in.
  73  *
  74  * TODO: Add "comment", "charset", and possibly other entries
  75  * that are supported by "pax interchange" format.  However, GNU, ustar,
  76  * cpio, and other variants don't support these features, so they're not an
  77  * excruciatingly high priority right now.
  78  *
  79  * TODO: "pax interchange" format allows essentially arbitrary
  80  * key/value attributes to be attached to any entry.  Supporting
  81  * such extensions may make this library useful for special
  82  * applications (e.g., a package manager could attach special
  83  * package-management attributes to each entry).  There are tricky
  84  * API issues involved, so this is not going to happen until
  85  * there's a real demand for it.
  86  *
  87  * TODO: Design a good API for handling sparse files.
  88  */
  89 struct archive_entry {
  90         /*
  91          * Note that ae_stat.st_mode & AE_IFMT  can be  0!
  92          *
  93          * This occurs when the actual file type of the object is not
  94          * in the archive.  For example, 'tar' archives store
  95          * hardlinks without marking the type of the underlying
  96          * object.
  97          */
  98
  99         /*
 100          * Read archive_entry_copy_stat.c for an explanation of why I
 101          * don't just use "struct stat" instead of "struct aest" here
 102          * and why I have this odd pointer to a separately-allocated
 103          * struct stat.
 104          */
 105         void *stat;
 106         int  stat_valid; /* Set to 0 whenever a field in aest changes. */
 107
 108         struct aest {
 109                 int64_t         aest_atime;
 110                 uint32_t        aest_atime_nsec;
 111                 int64_t         aest_ctime;
 112                 uint32_t        aest_ctime_nsec;
 113                 int64_t         aest_mtime;
 114                 uint32_t        aest_mtime_nsec;
 115                 gid_t           aest_gid;
 116                 ino_t           aest_ino;
 117                 mode_t          aest_mode;
 118                 uint32_t        aest_nlink;
 119                 uint64_t        aest_size;
 120                 uid_t           aest_uid;
 121                 /*
 122                  * Because converting between device codes and
 123                  * major/minor values is platform-specific and
 124                  * inherently a bit risky, we only do that conversion
 125                  * lazily.  That way, we will do a better job of
 126                  * preserving information in those cases where no
 127                  * conversion is actually required.
 128                  */
 129                 int             aest_dev_is_broken_down;
 130                 dev_t           aest_dev;
 131                 dev_t           aest_devmajor;
 132                 dev_t           aest_devminor;
 133                 int             aest_rdev_is_broken_down;
 134                 dev_t           aest_rdev;
 135                 dev_t           aest_rdevmajor;
 136                 dev_t           aest_rdevminor;
 137         } ae_stat;
 138
 139         /*
 140          * Use aes here so that we get transparent mbs<->wcs conversions.
 141          */
 142         struct aes ae_fflags_text;      /* Text fflags per fflagstostr(3) */
 143         unsigned long ae_fflags_set;            /* Bitmap fflags */
 144         unsigned long ae_fflags_clear;
 145         struct aes ae_gname;            /* Name of owning group */
 146         struct aes ae_hardlink; /* Name of target for hardlink */
 147         struct aes ae_pathname; /* Name of entry */
 148         struct aes ae_symlink;          /* symlink contents */
 149         struct aes ae_uname;            /* Name of owner */
 150         unsigned char   ae_hardlinkset;
 151         unsigned char   ae_symlinkset;
 152
 153         /* Not used within libarchive; useful for some clients. */
 154         struct aes ae_sourcepath;       /* Path this entry is sourced from. */
 155
 156         /* ACL support. */
 157         struct ae_acl   *acl_head;
 158         struct ae_acl   *acl_p;
 159         int              acl_state;     /* See acl_next for details. */
 160         wchar_t         *acl_text_w;
 161
 162         /* extattr support. */
 163         struct ae_xattr *xattr_head;
 164         struct ae_xattr *xattr_p;
 165
 166         /* Miscellaneous. */
 167         char             strmode[12];
 168 };
 169
 170
 171 #endif /* ARCHIVE_ENTRY_PRIVATE_H_INCLUDED */