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 unset CDPATH
  22
  23 TEMP=`getopt \
  24         -o '' \
  25         --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 \
  26         -n febootstrap-minimize -- "$@"`
  27 if [ $? != 0 ]; then
  28     echo "febootstrap-minimize: problem parsing the command line arguments"
  29     exit 1
  30 fi
  31 eval set -- "$TEMP"
  32
  33 set_all ()
  34 {
  35   keep_locales=no
  36      keep_docs=no
  37  keep_cracklib=no
  38      keep_i18n=no
  39  keep_zoneinfo=no
  40     keep_rpmdb=no
  41 keep_yum_cache=no
  42  keep_services=no
  43       keep_sln=no
  44  keep_ldconfig=no
  45 }
  46
  47 set_none ()
  48 {
  49   keep_locales=yes
  50      keep_docs=yes
  51  keep_cracklib=yes
  52      keep_i18n=yes
  53  keep_zoneinfo=yes
  54     keep_rpmdb=yes
  55 keep_yum_cache=yes
  56  keep_services=yes
  57       keep_sln=yes
  58  keep_ldconfig=yes
  59 }
  60
  61 set_all
  62 pack_executables=no
  63
  64 usage ()
  65 {
  66     echo "Usage: febootstrap-minimize [--options] DIR"
  67     echo "Please read febootstrap-minimize(8) man page for more information."
  68 }
  69
  70 while true; do
  71     case "$1" in
  72         --all)
  73             set_all
  74             shift;;
  75         --none)
  76             set_none
  77             shift;;
  78         --keep-locales)
  79             keep_locales=yes
  80             shift;;
  81         --drop-locales)
  82             keep_locales=no
  83             shift;;
  84         --keep-docs)
  85             keep_docs=yes
  86             shift;;
  87         --drop-docs)
  88             keep_docs=no
  89             shift;;
  90         --keep-cracklib)
  91             keep_cracklib=yes
  92             shift;;
  93         --drop-cracklib)
  94             keep_cracklib=no
  95             shift;;
  96         --keep-i18n)
  97             keep_i18n=yes
  98             shift;;
  99         --drop-i18n)
 100             keep_i18n=no
 101             shift;;
 102         --keep-zoneinfo)
 103             keep_zoneinfo=yes
 104             shift;;
 105         --drop-zoneinfo)
 106             keep_zoneinfo=no
 107             shift;;
 108         --keep-rpmdb)
 109             keep_rpmdb=yes
 110             shift;;
 111         --drop-rpmdb)
 112             keep_rpmdb=no
 113             shift;;
 114         --keep-yum-cache)
 115             keep_yum_cache=yes
 116             shift;;
 117         --drop-yum-cache)
 118             keep_yum_cache=no
 119             shift;;
 120         --keep-services)
 121             keep_services=yes
 122             shift;;
 123         --drop-services)
 124             keep_services=no
 125             shift;;
 126         --keep-sln)
 127             keep_sln=yes
 128             shift;;
 129         --drop-sln)
 130             keep_sln=no
 131             shift;;
 132         --keep-ldconfig)
 133             keep_ldconfig=yes
 134             shift;;
 135         --drop-ldconfig)
 136             keep_ldconfig=no
 137             shift;;
 138         --no-pack-executables)
 139             pack_executables=no
 140             shift;;
 141         --pack-executables)
 142             pack_executables=yes
 143             shift;;
 144         --help)
 145             usage
 146             exit 0;;
 147         --)
 148             shift
 149             break;;
 150         *)
 151             echo "Internal error!"
 152             exit 1;;
 153     esac
 154 done
 155
 156 if [ $# -lt 1 ]; then
 157     usage
 158     exit 1
 159 fi
 160
 161 target="$1"
 162
 163 if [ ! -d "$target" ]; then
 164     echo "febootstrap-minimize: $target: target directory not found"
 165     exit 1
 166 fi
 167
 168 # Create a temporary directory, make sure it gets cleaned up at the end.
 169 tmpdir=$(mktemp -d)
 170 remove_tmpdir ()
 171 {
 172   status=$?
 173   rm -rf "$tmpdir" && exit $status
 174 }
 175 trap remove_tmpdir EXIT
 176
 177 #----------------------------------------------------------------------
 178
 179 if [ "$keep_locales" != "yes" ]; then
 180     rm -f "$target"/usr/lib/locale/*
 181     rm -rf "$target"/usr/share/locale
 182     rm -rf "$target"/usr/lib*/gconv
 183     rm -f "$target"/usr/bin/localedef
 184     rm -f "$target"/usr/sbin/build-locale-archive
 185 fi
 186
 187 if [ "$keep_docs" != "yes" ]; then
 188     rm -rf "$target"/usr/share/man
 189     rm -rf "$target"/usr/share/doc
 190     rm -rf "$target"/usr/share/info
 191     rm -rf "$target"/usr/share/gnome/help
 192 fi
 193
 194 if [ "$keep_cracklib" != "yes" ]; then
 195     rm -rf "$target"/usr/share/cracklib
 196 fi
 197
 198 if [ "$keep_i18n" != "yes" ]; then
 199     rm -rf "$target"/usr/share/i18n
 200 fi
 201
 202 if [ "$keep_zoneinfo" != "yes" ]; then
 203     mv "$target"/usr/share/zoneinfo/{UCT,UTC,Universal,Zulu,GMT*,*.tab} \
 204       "$target"
 205     rm -rf "$target"/usr/share/zoneinfo/*
 206     mv "$target"/{UCT,UTC,Universal,Zulu,GMT*,*.tab} \
 207       "$target"/usr/share/zoneinfo/
 208 fi
 209
 210 if [ "$keep_rpmdb" != "yes" ]; then
 211     rm -rf "$target"/var/lib/rpm/*
 212 fi
 213
 214 if [ "$keep_yum_cache" != "yes" ]; then
 215     rm -rf "$target"/var/cache/yum/*
 216 fi
 217
 218 if [ "$keep_services" != "yes" ]; then
 219     # NB: Overwrite the same file so that we have the same inode,
 220     # since fakeroot tracks files by inode number.
 221     cat > "$target"/etc/services <<'__EOF__'
 222 tcpmux 1/tcp
 223 tcpmux 1/udp
 224 echo 7/tcp
 225 echo 7/udp
 226 discard 9/tcp sink null
 227 discard 9/udp sink null
 228 ftp 21/tcp
 229 ftp 21/udp fsp fspd
 230 ssh 22/tcp
 231 ssh 22/udp
 232 telnet 23/tcp
 233 telnet 23/udp
 234 smtp 25/tcp mail
 235 smtp 25/udp mail
 236 time 37/tcp timserver
 237 time 37/udp timserver
 238 nameserver 42/tcp name
 239 nameserver 42/udp name
 240 domain 53/tcp
 241 domain 53/udp
 242 bootps 67/tcp
 243 bootps 67/udp
 244 bootpc 68/tcp dhcpc
 245 bootpc 68/udp dhcpc
 246 tftp 69/tcp
 247 tftp 69/udp
 248 finger 79/tcp
 249 finger 79/udp
 250 http 80/tcp www www-http
 251 http 80/udp www www-http
 252 http 80/sctp
 253 kerberos 88/tcp kerberos5 krb5
 254 kerberos 88/udp kerberos5 krb5
 255 pop3 110/tcp pop-3
 256 pop3 110/udp pop-3
 257 sunrpc 111/tcp portmapper rpcbind
 258 sunrpc 111/udp portmapper rpcbind
 259 auth 113/tcp authentication tap ident
 260 auth 113/udp authentication tap ident
 261 ntp 123/tcp
 262 ntp 123/udp
 263 imap 143/tcp imap2
 264 imap 143/udp imap2
 265 snmp 161/tcp
 266 snmp 161/udp
 267 snmptrap 162/tcp
 268 snmptrap 162/udp snmp-trap
 269 __EOF__
 270 fi
 271
 272 if [ "$keep_sln" != "yes" ]; then
 273     rm -f "$target"/sbin/sln
 274 fi
 275
 276 if [ "$keep_ldconfig" != "yes" ]; then
 277     rm -f "$target"/sbin/ldconfig
 278     rm -f "$target"/etc/ld.so.cache
 279     rm -rf "$target"/var/cache/ldconfig/*
 280 fi
 281
 282 if [ "$pack_executables" = "yes" ]; then
 283     # NB. Be careful to keep the same inode number, since fakeroot
 284     # tracks files by inode number.
 285     for path in $(find "$target" -type f -perm /111 |
 286                   xargs file |
 287                   grep executable |
 288                   awk -F: '{print $1}'); do
 289         base=$(basename "$path")
 290         cp "$path" "$tmpdir"
 291         (cd "$tmpdir" && upx -q -q --best "$base")
 292         cat "$tmpdir"/"$base" > "$path"
 293         rm "$tmpdir"/"$base"
 294     done
 295 fi