bin/pax/cpio.h

   1 /*-
   2  * Copyright (c) 1992 Keith Muller.
   3  * Copyright (c) 1992, 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * This code is derived from software contributed to Berkeley by
   7  * Keith Muller of the University of California, San Diego.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by the University of
  20  *      California, Berkeley and its contributors.
  21  * 4. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  *      @(#)cpio.h      8.1 (Berkeley) 5/31/93
  38  * $FreeBSD: src/bin/pax/cpio.h,v 1.6 1999/08/27 23:14:41 peter Exp $
  39  * $DragonFly: src/bin/pax/cpio.h,v 1.2 2003/06/17 06:22:50 dillon Exp $
  40  */
  41
  42 /*
  43  * Defines common to all versions of cpio
  44  */
  45 #define TRAILER         "TRAILER!!!"    /* name in last archive record */
  46
  47 /*
  48  * Header encoding of the different file types
  49  */
  50 #define C_ISDIR          040000         /* Directory */
  51 #define C_ISFIFO         010000         /* FIFO */
  52 #define C_ISREG         0100000         /* Regular file */
  53 #define C_ISBLK          060000         /* Block special file */
  54 #define C_ISCHR          020000         /* Character special file */
  55 #define C_ISCTG         0110000         /* Reserved for contiguous files */
  56 #define C_ISLNK         0120000         /* Reserved for symbolic links */
  57 #define C_ISOCK         0140000         /* Reserved for sockets */
  58 #define C_IFMT          0170000         /* type of file */
  59
  60 /*
  61  * Data Interchange Format - Extended cpio header format - POSIX 1003.1-1990
  62  */
  63 typedef struct {
  64         char    c_magic[6];             /* magic cookie */
  65         char    c_dev[6];               /* device number */
  66         char    c_ino[6];               /* inode number */
  67         char    c_mode[6];              /* file type/access */
  68         char    c_uid[6];               /* owners uid */
  69         char    c_gid[6];               /* owners gid */
  70         char    c_nlink[6];             /* # of links at archive creation */
  71         char    c_rdev[6];              /* block/char major/minor # */
  72         char    c_mtime[11];            /* modification time */
  73         char    c_namesize[6];          /* length of pathname */
  74         char    c_filesize[11];         /* length of file in bytes */
  75 } HD_CPIO;
  76
  77 #define MAGIC           070707          /* transportable archive id */
  78
  79 #ifdef _PAX_
  80 #define AMAGIC          "070707"        /* ascii equivalent string of MAGIC */
  81 #define CPIO_MASK       0x3ffff         /* bits valid in the dev/ino fields */
  82                                         /* used for dev/inode remaps */
  83 #endif /* _PAX_ */
  84
  85 /*
  86  * Binary cpio header structure
  87  *
  88  * CAUTION! CAUTION! CAUTION!
  89  * Each field really represents a 16 bit short (NOT ASCII). Described as
  90  * an array of chars in an attempt to improve portability!!
  91  */
  92 typedef struct {
  93         u_char  h_magic[2];
  94         u_char  h_dev[2];
  95         u_char  h_ino[2];
  96         u_char  h_mode[2];
  97         u_char  h_uid[2];
  98         u_char  h_gid[2];
  99         u_char  h_nlink[2];
 100         u_char  h_rdev[2];
 101         u_char  h_mtime_1[2];
 102         u_char  h_mtime_2[2];
 103         u_char  h_namesize[2];
 104         u_char  h_filesize_1[2];
 105         u_char  h_filesize_2[2];
 106 } HD_BCPIO;
 107
 108 #ifdef _PAX_
 109 /*
 110  * extraction and creation macros for binary cpio
 111  */
 112 #define SHRT_EXT(ch)    ((((unsigned)(ch)[0])<<8) | (((unsigned)(ch)[1])&0xff))
 113 #define RSHRT_EXT(ch)   ((((unsigned)(ch)[1])<<8) | (((unsigned)(ch)[0])&0xff))
 114 #define CHR_WR_0(val)   ((char)(((val) >> 24) & 0xff))
 115 #define CHR_WR_1(val)   ((char)(((val) >> 16) & 0xff))
 116 #define CHR_WR_2(val)   ((char)(((val) >> 8) & 0xff))
 117 #define CHR_WR_3(val)   ((char)((val) & 0xff))
 118
 119 /*
 120  * binary cpio masks and pads
 121  */
 122 #define BCPIO_PAD(x)    ((2 - ((x) & 1)) & 1)   /* pad to next 2 byte word */
 123 #define BCPIO_MASK      0xffff                  /* mask for dev/ino fields */
 124 #endif /* _PAX_ */
 125
 126 /*
 127  * System VR4 cpio header structure (with/without file data crc)
 128  */
 129 typedef struct {
 130         char    c_magic[6];             /* magic cookie */
 131         char    c_ino[8];               /* inode number */
 132         char    c_mode[8];              /* file type/access */
 133         char    c_uid[8];               /* owners uid */
 134         char    c_gid[8];               /* owners gid */
 135         char    c_nlink[8];             /* # of links at archive creation */
 136         char    c_mtime[8];             /* modification time */
 137         char    c_filesize[8];          /* length of file in bytes */
 138         char    c_maj[8];               /* block/char major # */
 139         char    c_min[8];               /* block/char minor # */
 140         char    c_rmaj[8];              /* special file major # */
 141         char    c_rmin[8];              /* special file minor # */
 142         char    c_namesize[8];          /* length of pathname */
 143         char    c_chksum[8];            /* 0 OR CRC of bytes of FILE data */
 144 } HD_VCPIO;
 145
 146 #define VMAGIC          070701          /* sVr4 new portable archive id */
 147 #define VCMAGIC         070702          /* sVr4 new portable archive id CRC */
 148 #ifdef _PAX_
 149 #define AVMAGIC         "070701"        /* ascii string of above */
 150 #define AVCMAGIC        "070702"        /* ascii string of above */
 151 #define VCPIO_PAD(x)    ((4 - ((x) & 3)) & 3)   /* pad to next 4 byte word */
 152 #define VCPIO_MASK      0xffffffff      /* mask for dev/ino fields */
 153 #endif /* _PAX_ */