vfs/extfs/ucpio.in

   1 #!/bin/sh
   2 #
   3 # Written by Stas Maximov 1998 SVR4 (UnixWare)
   4 # stmax@u213.srcc.msu.su
   5 # (C) 1996 The Free Software Foundation.
   6 #
   7 #
   8
   9 uni_cat ()
  10 # $1 is the archive name
  11 {
  12     case "$1" in
  13     *.cpio.Z)   compress -dc "$1"
  14         ;;
  15     *.cpio.gz)  gzip -dc "$1"
  16         ;;
  17     *.cpio)     cat "$1"
  18         ;;
  19     *)          echo "unknown extension"
  20     esac
  21 }
  22
  23 mccpiofs_list ()
  24 # $1 is the archive name
  25 {
  26     uni_cat "$1" | cpio -itv | @AWK@ '
  27         {
  28             if (substr($9,length($9),1) == ",")
  29             {
  30                 tmp = substr($9, 1, length($9)-1);
  31                 $9 = $8;
  32                 $8 = tmp
  33             }
  34             else if (substr($10,length($10),1) == ",")
  35             {
  36                 tmp = substr($10, 1, length($10)-1);
  37                 $10 = $9
  38                 $9 = tmp
  39             }
  40
  41             print $0
  42         }'
  43 }
  44
  45 mccpiofs_copyout ()
  46 # $1 is the archive name
  47 # $2 is a name of a file within the archive
  48 # $3 is a name of a file within the system (to add from or extract to)
  49 {
  50     TMPDIR=/tmp/mctmpdir.$$
  51 # FIXME: Try harder to generate a unique directory if this fails
  52     mkdir -m 0700 $TMPDIR || exit 1
  53     cd $TMPDIR
  54     uni_cat "$1" | cpio -icumd "$2" 2>/dev/null
  55     mv "$2" "$3"
  56     cd /
  57     rm -rf $TMPDIR
  58 }
  59
  60 #
  61 # main
  62 #
  63     umask 077
  64
  65     case "$1" in
  66     list)   mccpiofs_list $2
  67             exit 0
  68             ;;
  69     copyout) mccpiofs_copyout $2 $3 $4
  70             exit 0
  71             ;;
  72     esac
  73
  74     exit 1
  75