generate-modprobe.conf

   1 #! /bin/sh -e
   2
   3 # Naive shell script to translate modules.conf + defaults to modprobe.conf
   4 # Normal caveats apply, as with any machine translation.
   5 usage() {
   6         cat <<-EOF
   7                 Usage: $0 [--assume-kernel=n.n.n] [--stdin] [modprobe.conf]
   8                    Converts your current modules setup to modprobe.conf.
   9                    Don't trust it too much.
  10                  Version 0.1
  11         EOF
  12         exit ${1:-1}
  13 }
  14
  15 KV=$(uname -r)
  16 STDIN=
  17 while [ -n "$1" ] ; do
  18         case $1 in
  19         --assume-kernel)   KV=$2; shift;;
  20         --assume-kernel=*) KV=${1#*=};;
  21         --stdin)           STDIN=1;;
  22         -h|--help)         usage 0;;
  23         *)                 break;;
  24         esac
  25         shift
  26 done
  27
  28 # Set up output if specified.
  29 if [ $# -eq 1 ] ; then
  30         exec > $1
  31 else
  32         usage 1
  33 fi
  34
  35 MODPROBECONF=`mktemp /tmp/modprobe.XXXXXX || tempfile || echo /tmp/modprobe.$$`
  36 trap "rm -f $MODPROBECONF" 0
  37
  38 modprobe_abort()
  39 {
  40     echo Failed to to run modprobe.  Giving up. 1>&2
  41     exit 1
  42 }
  43
  44 if [ x"$TESTING_MODPROBE_CONF" != x ]; then
  45     cp $TESTING_MODPROBE_CONF $MODPROBECONF
  46 elif [ "$STDIN" = "1" ]; then
  47     cat > $MODPROBECONF
  48 elif [ -x /sbin/modprobe.old ]; then
  49     # In sbin.
  50     /sbin/modprobe.old -c > $MODPROBECONF || modprobe_abort
  51 elif modprobe.old -c >/dev/null 2>&1; then
  52     # Somewhere in path.
  53     modprobe.old -c > $MODPROBECONF || modprobe_abort
  54 elif /sbin/modprobe -V 2>/dev/null | grep -q 'modprobe version'; then
  55     # Running /sbin/modprobe gives old version.
  56     /sbin/modprobe -c > $MODPROBECONF || modprobe_abort
  57 elif modprobe -V 2>/dev/null | grep -q 'modprobe version'; then
  58     # Running modprobe gives old version.
  59     modprobe -c > $MODPROBECONF || modprobe_abort
  60 else
  61     echo Cannot find old version of modprobe.  Giving up. 2>&1
  62     exit 1
  63 fi
  64
  65 # Resolve (possibly recursive) alias: args filename alias
  66 resolve_alias()
  67 {
  68     RA_RESOLVE=`grep "^alias[   ][      ]*$2[   ]" -- $1 | awk '{ print $3 }'`
  69     if [ x"$RA_RESOLVE" = x ]; then
  70         echo $2
  71         return
  72     fi
  73     # Recurse.
  74     (resolve_alias $1 "$RA_RESOLVE")
  75 }
  76
  77 # Parse alias: args filename modulename aliasto.
  78 parse_alias()
  79 {
  80     PA_ALIAS=`resolve_alias $1 $3`
  81     NAME=`echo $2|sed -e 's/\(block\|char\)-major-\([0-9]\+\)$/\1-major-\2-*/'`
  82
  83     echo "alias $NAME $PA_ALIAS"
  84 }
  85
  86 # Parse options: args modulename aliasto.
  87 parse_options()
  88 {
  89     # Second arg can be null if grab_noninstall options returns empty.
  90     [ x"$2" = x ] || echo "options $1 $2"
  91 }
  92
  93 # Separate out the modprobe options from the module options
  94 grab_install_options()
  95 {
  96     GRAB_OPTS=""
  97     GRAB_NEXT=0
  98     for grab_i; do
  99         case "$grab_i" in
 100         -o) GRAB_OPTS="$GRAB_OPTS -o"; GRAB_NEXT=1;;
 101         -*) echo Warning: Ignoring unknown alias option "$grab_i" >&2;;
 102         *)
 103             [ $GRAB_NEXT = 0 ] || GRAB_OPTS="$GRAB_OPTS $grab_i"
 104             GRAB_NEXT=0
 105             ;;
 106         esac
 107     done
 108     echo "$GRAB_OPTS"
 109 }
 110
 111 grab_noninstall_options()
 112 {
 113     GRAB_OPTS=""
 114     GRAB_NEXT=0
 115     for grab_i; do
 116         case "$grab_i" in
 117         -o) GRAB_NEXT=1;;
 118         -*) ;;
 119         *)
 120             [ $GRAB_NEXT = 1 ] || GRAB_OPTS="$GRAB_OPTS $grab_i"
 121             GRAB_NEXT=0
 122             ;;
 123         esac
 124     done
 125     echo "$GRAB_OPTS"
 126 }
 127
 128 # Produce a multiple install/remove commands. Args: list, command, separator.
 129 multi()
 130 {
 131     mp_res=""
 132     for mp_arg in $1; do
 133         if [ x"$mp_res" = x ]; then mp_res="/sbin/$2 $mp_arg";
 134         else mp_res="$mp_res${3}/sbin/$2 $mp_arg";
 135         fi
 136     done
 137     echo "$mp_res"
 138 }
 139
 140 # Install and remove commands frequently refer to insmod and rmmod.
 141 # Use "modprobe --ignore-install " and "modprobe -r --ignore-remove" since
 142 # our versions of rmmod and insmod are deliberately stupid.
 143 convert_command()
 144 {
 145     echo "$@" | sed -e 's,insmod,/sbin/modprobe --ignore-install,' -e 's,rmmod,/sbin/modprobe -r --ignore-remove,'
 146 }
 147
 148 while read ADD NAME MODULE REST; do
 149     # Ignore a spurious add, otherwise move them down.
 150     if [ x"$ADD" = x"add" ]; then :; else
 151         REST="`echo $MODULE $REST | sed 's/ *$//'`"
 152         MODULE="$NAME"
 153         NAME="$ADD";
 154     fi
 155     #echo "NAME=$NAME MODULE=$MODULE REST=$REST" >&2
 156
 157     # MODNAME is the converted name for use in variables.
 158     MODNAME=`echo $MODULE | tr -c A-Za-z_0-9 _`
 159     case "$NAME" in
 160     '#'*) : ;; # Comment
 161     '') : ;;   # Blank line
 162
 163     keep) # Do nothing.
 164         ;;
 165
 166     alias)
 167         if [ x"$REST" = xoff ] || [ x"$REST" = xnull ]; then
 168             INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 169             eval install_$MODNAME=\"/bin/true\"
 170         else
 171             parse_alias $MODPROBECONF "$MODULE" $REST
 172         fi
 173         ;;
 174
 175     options)
 176         # Options used to be able to contain extra args to insmod
 177         # (eg. -o foo).  Not any more.
 178         case " $REST" in
 179         *' '-[-a-z]*)
 180             parse_options $MODULE `grab_noninstall_options $REST`
 181             INSTALL_OPTIONS=`grab_install_options $REST`
 182             INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 183             eval install_$MODNAME=\"/sbin/modprobe $INSTALL_OPTIONS --ignore-install `resolve_alias $MODPROBECONF $MODULE`\"
 184             ;;
 185         *)
 186             parse_options $MODULE "$REST"
 187             ;;
 188         esac
 189         ;;
 190
 191     above)
 192         # Pull in these modules after me.
 193         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 194         eval post_install_$MODNAME=\"`multi "$REST" 'modprobe' '; '`\; /bin/true\"
 195         REMOVE_COMMANDS="$REMOVE_COMMANDS $MODULE"
 196         eval pre_remove_$MODNAME=\"`multi "$REST" 'modprobe -r' '; '`\"
 197         ;;
 198     below)
 199         # Pull in these modules before me.
 200         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 201         eval pre_install_$MODNAME=\"`multi "$REST" 'modprobe' '; '`\"
 202         REMOVE_COMMANDS="$REMOVE_COMMANDS $MODULE"
 203         eval post_remove_$MODNAME=\"`multi "$REST" 'modprobe -r' '; '`\; /bin/true\"
 204         ;;
 205     probe)
 206         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 207         eval install_$MODNAME=\"`multi "$REST" 'modprobe' ' || '`\"
 208         ;;
 209     probeall)
 210         # Not quite correct.  If they all fail, we should fail.
 211         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 212         eval install_$MODNAME=\"`multi "$REST" 'modprobe' '; '`\; /bin/true\"
 213         ;;
 214     post-install)
 215         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 216         eval post_install_$MODNAME=\"`convert_command "$REST"`\"
 217         ;;
 218     pre-install)
 219         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 220         eval pre_install_$MODNAME=\"`convert_command "$REST"`\"
 221         ;;
 222     install)
 223         INSTALL_COMMANDS="$INSTALL_COMMANDS $MODULE"
 224         eval install_$MODNAME=\"`convert_command "$REST"`\"
 225         ;;
 226     post-remove)
 227         REMOVE_COMMANDS="$REMOVE_COMMANDS $MODULE"
 228         eval post_remove_$MODNAME=\"`convert_command "$REST"`\"
 229         ;;
 230     pre-remove)
 231         REMOVE_COMMANDS="$REMOVE_COMMANDS $MODULE"
 232         eval pre_remove_$MODNAME=\"`convert_command "$REST"`\"
 233         ;;
 234     remove)
 235         REMOVE_COMMANDS="$REMOVE_COMMANDS $MODULE"
 236         eval remove_$MODNAME=\"`convert_command "$REST"`\"
 237         ;;
 238     include)
 239         # Recurse.
 240         ($0 $MODULE)
 241         ;;
 242     # Ignore default lines which are not required any more.
 243     "path[boot]=/lib/modules/boot"|"path[toplevel]=/lib/modules/$KV"|"path[toplevel]=/lib/modules/2.4"|"path[kernel]=/lib/modules/kernel"|"path[fs]=/lib/modules/fs"|"path[net]=/lib/modules/net"|"path[scsi]=/lib/modules/scsi"|"path[block]=/lib/modules/block"|"path[cdrom]=/lib/modules/cdrom"|"path[ipv4]=/lib/modules/ipv4"|"path[ipv6]=/lib/modules/ipv6"|"path[sound]=/lib/modules/sound"|"path[fc4]=/lib/modules/fc4"|"path[video]=/lib/modules/video"|"path[misc]=/lib/modules/misc"|"path[pcmcia]=/lib/modules/pcmcia"|"path[atm]=/lib/modules/atm"|"path[usb]=/lib/modules/usb"|"path[ide]=/lib/modules/ide"|"path[ieee1394]=/lib/modules/ieee1394"|"path[mtd]=/lib/modules/mtd"|"generic_stringfile=/lib/modules/$KV/modules.generic_string"|"pcimapfile=/lib/modules/$KV/modules.pcimap"|"isapnpmapfile=/lib/modules/$KV/modules.isapnpmap"|"usbmapfile=/lib/modules/$KV/modules.usbmap"|"parportmapfile=/lib/modules/$KV/modules.parportmap"|"ieee1394mapfile=/lib/modules/$KV/modules.ieee1394map"|"pnpbiosmapfile=/lib/modules/$KV/modules.pnpbiosmap"|"depfile=/lib/modules/$KV/modules.dep"|"persistdir=/var/lib/modules/persist")
 244         ;;
 245
 246     # Ignore prune lines unless they end in .o or .ko, which would
 247     # have an effect.
 248     prune)
 249         case "$MODULE" in
 250         *.ko|*.o)
 251             echo "Warning: not translating $NAME $MODULE $REST" >&2
 252             ;;
 253         esac
 254         ;;
 255     *)
 256         echo "Warning: not translating $NAME $MODULE $REST" >&2
 257         ;;
 258     esac
 259 done < $MODPROBECONF
 260
 261 for mod in `echo $INSTALL_COMMANDS | tr ' ' '\n' | sort -u`; do
 262     # MODNAME is the converted name for use in variables.
 263     MODNAME=`echo $mod | tr -c A-Za-z_0-9 _`
 264     eval PREINSTALL=\"\$pre_install_$MODNAME\"
 265     eval POSTINSTALL=\"\$post_install_$MODNAME\"
 266     eval INSTALL=\"\$\{install_$MODNAME:-/sbin/modprobe --first-time --ignore-install $mod}\"
 267     if [ -n "$PREINSTALL" ]; then PREINSTALL="{ $PREINSTALL; } ; "; fi
 268     if [ -n "$POSTINSTALL" ]; then POSTINSTALL="&& { $POSTINSTALL; }"; fi
 269     echo install $mod $PREINSTALL $INSTALL $POSTINSTALL
 270 done
 271
 272 for mod in `echo $REMOVE_COMMANDS | tr ' ' '\n' | sort -u`; do
 273     # MODNAME is the converted name for use in variables.
 274     MODNAME=`echo $mod | tr -c A-Za-z_0-9 _`
 275     eval PREREMOVE=\"\$pre_remove_$MODNAME\"
 276     eval POSTREMOVE=\"\$post_remove_$MODNAME\"
 277     eval REMOVE=\"\$\{remove_$MODNAME:-/sbin/modprobe -r --first-time --ignore-remove $mod}\"
 278     if [ -n "$PREREMOVE" ]; then PREREMOVE="{ $PREREMOVE; } ; "; fi
 279     if [ -n "$POSTREMOVE" ]; then POSTREMOVE="&& { $POSTREMOVE; }"; fi
 280     echo remove $mod $PREREMOVE $REMOVE $POSTREMOVE
 281 done