febootstrap-minimize.sh

   1 #!/bin/bash -
   2 # febootstrap minimize
   3 # (C) Copyright 2009 Red Hat Inc.
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 #
  19 # Written by Richard W.M. Jones <rjones@redhat.com>
  20
  21 TEMP=`getopt \
  22         -o '' \
  23         --long help,all,none,keep-locales,drop-locales,keep-docs,drop-docs,keep-cracklib,drop-cracklib,keep-i18n,drop-i18n,keep-zoneinfo,drop-zoneinfo,keep-rpmdb,drop-rpmdb,keep-yum-cache,drop-yum-cache,keep-services,drop-services,keep-sln,drop-sln,keep-ldconfig,drop-ldconfig,no-pack-executables,pack-executables \
  24         -n febootstrap-minimize -- "$@"`
  25 if [ $? != 0 ]; then
  26     echo "febootstrap-minimize: problem parsing the command line arguments"
  27     exit 1
  28 fi
  29 eval set -- "$TEMP"
  30
  31 set_all ()
  32 {
  33   keep_locales=no
  34      keep_docs=no
  35  keep_cracklib=no
  36      keep_i18n=no
  37  keep_zoneinfo=no
  38     keep_rpmdb=no
  39 keep_yum_cache=no
  40  keep_services=no
  41       keep_sln=no
  42  keep_ldconfig=no
  43 }
  44
  45 set_none ()
  46 {
  47   keep_locales=yes
  48      keep_docs=yes
  49  keep_cracklib=yes
  50      keep_i18n=yes
  51  keep_zoneinfo=yes
  52     keep_rpmdb=yes
  53 keep_yum_cache=yes
  54  keep_services=yes
  55       keep_sln=yes
  56  keep_ldconfig=yes
  57 }
  58
  59 set_all
  60 pack_executables=no
  61
  62 usage ()
  63 {
  64     echo "Usage: febootstrap-minimize [--options] DIR"
  65     echo "Please read febootstrap-minimize(8) man page for more information."
  66 }
  67
  68 while true; do
  69     case "$1" in
  70         --all)
  71             set_all
  72             shift;;
  73         --none)
  74             set_none
  75             shift;;
  76         --keep-locales)
  77             keep_locales=yes
  78             shift;;
  79         --drop-locales)
  80             keep_locales=no
  81             shift;;
  82         --keep-docs)
  83             keep_docs=yes
  84             shift;;
  85         --drop-docs)
  86             keep_docs=no
  87             shift;;
  88         --keep-cracklib)
  89             keep_cracklib=yes
  90             shift;;
  91         --drop-cracklib)
  92             keep_cracklib=no
  93             shift;;
  94         --keep-i18n)
  95             keep_i18n=yes
  96             shift;;
  97         --drop-i18n)
  98             keep_i18n=no
  99             shift;;
 100         --keep-zoneinfo)
 101             keep_zoneinfo=yes
 102             shift;;
 103         --drop-zoneinfo)
 104             keep_zoneinfo=no
 105             shift;;
 106         --keep-rpmdb)
 107             keep_rpmdb=yes
 108             shift;;
 109         --drop-rpmdb)
 110             keep_rpmdb=no
 111             shift;;
 112         --keep-yum-cache)
 113             keep_yum_cache=yes
 114             shift;;
 115         --drop-yum-cache)
 116             keep_yum_cache=no
 117             shift;;
 118         --keep-services)
 119             keep_services=yes
 120             shift;;
 121         --drop-services)
 122             keep_services=no
 123             shift;;
 124         --keep-sln)
 125             keep_sln=yes
 126             shift;;
 127         --drop-sln)
 128             keep_sln=no
 129             shift;;
 130         --keep-ldconfig)
 131             keep_ldconfig=yes
 132             shift;;
 133         --drop-ldconfig)
 134             keep_ldconfig=no
 135             shift;;
 136         --no-pack-executables)
 137             pack_executables=no
 138             shift;;
 139         --pack-executables)
 140             pack_executables=yes
 141             shift;;
 142         --help)
 143             usage
 144             exit 0;;
 145         --)
 146             shift
 147             break;;
 148         *)
 149             echo "Internal error!"
 150             exit 1;;
 151     esac
 152 done
 153
 154 if [ $# -lt 1 ]; then
 155     usage
 156     exit 1
 157 fi
 158
 159 target="$1"
 160
 161 if [ ! -d "$target" ]; then
 162     echo "febootstrap-minimize: $target: target directory not found"
 163     exit 1
 164 fi
 165
 166 # Create a temporary directory, make sure it gets cleaned up at the end.
 167 tmpdir=$(mktemp -d)
 168 remove_tmpdir ()
 169 {
 170   status=$?
 171   rm -rf "$tmpdir" && exit $status
 172 }
 173 trap remove_tmpdir EXIT
 174
 175 #----------------------------------------------------------------------
 176
 177 if [ "$keep_locales" != "yes" ]; then
 178     rm -f "$target"/usr/lib/locale/*
 179     rm -rf "$target"/usr/share/locale
 180     rm -rf "$target"/usr/lib*/gconv
 181     rm -f "$target"/usr/bin/localedef
 182     rm -f "$target"/usr/sbin/build-locale-archive
 183 fi
 184
 185 if [ "$keep_docs" != "yes" ]; then
 186     rm -rf "$target"/usr/share/man
 187     rm -rf "$target"/usr/share/doc
 188     rm -rf "$target"/usr/share/info
 189 fi
 190
 191 if [ "$keep_cracklib" != "yes" ]; then
 192     rm -rf "$target"/usr/share/cracklib
 193 fi
 194
 195 if [ "$keep_i18n" != "yes" ]; then
 196     rm -rf "$target"/usr/share/i18n
 197 fi
 198
 199 if [ "$keep_zoneinfo" != "yes" ]; then
 200     mv "$target"/usr/share/zoneinfo/{UCT,UTC,Universal,Zulu,GMT*,*.tab} \
 201       "$target"
 202     rm -rf "$target"/usr/share/zoneinfo/*
 203     mv "$target"/{UCT,UTC,Universal,Zulu,GMT*,*.tab} \
 204       "$target"/usr/share/zoneinfo/
 205 fi
 206
 207 if [ "$keep_rpmdb" != "yes" ]; then
 208     rm -rf "$target"/var/lib/rpm/*
 209 fi
 210
 211 if [ "$keep_yum_cache" != "yes" ]; then
 212     rm -rf "$target"/var/cache/yum/*
 213 fi
 214
 215 if [ "$keep_services" != "yes" ]; then
 216     # NB: Overwrite the same file so that we have the same inode,
 217     # since fakeroot tracks files by inode number.
 218     cat > "$target"/etc/services <<'__EOF__'
 219 tcpmux 1/tcp
 220 tcpmux 1/udp
 221 echo 7/tcp
 222 echo 7/udp
 223 discard 9/tcp sink null
 224 discard 9/udp sink null
 225 ftp 21/tcp
 226 ftp 21/udp fsp fspd
 227 ssh 22/tcp
 228 ssh 22/udp
 229 telnet 23/tcp
 230 telnet 23/udp
 231 smtp 25/tcp mail
 232 smtp 25/udp mail
 233 time 37/tcp timserver
 234 time 37/udp timserver
 235 nameserver 42/tcp name
 236 nameserver 42/udp name
 237 domain 53/tcp
 238 domain 53/udp
 239 bootps 67/tcp
 240 bootps 67/udp
 241 bootpc 68/tcp dhcpc
 242 bootpc 68/udp dhcpc
 243 tftp 69/tcp
 244 tftp 69/udp
 245 finger 79/tcp
 246 finger 79/udp
 247 http 80/tcp www www-http
 248 http 80/udp www www-http
 249 http 80/sctp
 250 kerberos 88/tcp kerberos5 krb5
 251 kerberos 88/udp kerberos5 krb5
 252 pop3 110/tcp pop-3
 253 pop3 110/udp pop-3
 254 sunrpc 111/tcp portmapper rpcbind
 255 sunrpc 111/udp portmapper rpcbind
 256 auth 113/tcp authentication tap ident
 257 auth 113/udp authentication tap ident
 258 ntp 123/tcp
 259 ntp 123/udp
 260 imap 143/tcp imap2
 261 imap 143/udp imap2
 262 snmp 161/tcp
 263 snmp 161/udp
 264 snmptrap 162/tcp
 265 snmptrap 162/udp snmp-trap
 266 __EOF__
 267 fi
 268
 269 if [ "$keep_sln" != "yes" ]; then
 270     rm -f "$target"/sbin/sln
 271 fi
 272
 273 if [ "$keep_ldconfig" != "yes" ]; then
 274     rm -f "$target"/sbin/ldconfig
 275     rm -f "$target"/etc/ld.so.cache
 276     rm -rf "$target"/var/cache/ldconfig/*
 277 fi
 278
 279 if [ "$pack_executables" = "yes" ]; then
 280     # NB. Be careful to keep the same inode number, since fakeroot
 281     # tracks files by inode number.
 282     for path in $(find "$target" -type f -perm /111 |
 283                   xargs file |
 284                   grep executable |
 285                   awk -F: '{print $1}'); do
 286         base=$(basename $path)
 287         cp $path $tmpdir
 288         (cd $tmpdir && upx -q -q --best $base)
 289         cat $tmpdir/$base > $path
 290         rm $tmpdir/$base
 291     done
 292 fi