init.qcom.modem_links.sh

#!/system/bin/sh
# Copyright (c) 2014, The Linux Foundation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
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#       with the distribution.
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#       from this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#

# No path is set up at this point so we have to do it here.
PATH=/sbin:/system/sbin:/system/bin:/system/xbin
export PATH

# Check for images and set up symlinks
cd /firmware/image

# Get the list of files in /firmware/image
# for which sym links have to be created

fwfiles=`ls modem* adsp* wcnss* mba*`

# Check if the links with similar names
# have been created in /system/etc/firmware

cd /system/etc/firmware
linksNeeded=0

# For everyfile in fwfiles check if
# the corresponding file exists
for fwfile in $fwfiles; do

   # if (condition) does not seem to work
   # with the android shell. Therefore
   # make do with case statements instead.
   # if a file named $fwfile is present
   # no need to create links. If the file
   # with the name $fwfile is not present
   # need to create links.

   case `ls $fwfile` in
      $fwfile)
         continue;;
      *)
         # file with $fwfile does not exist
         # need to create links
         linksNeeded=1
         break;;
   esac

done

case $linksNeeded in
   1)
      cd /firmware/image

      case `ls modem.mdt 2>/dev/null` in
         modem.mdt)
            for imgfile in modem*; do
               ln -s /firmware/image/$imgfile /system/etc/firmware/$imgfile 2>/dev/null
            done
            ;;
        *)
            # trying to log here but nothing will be logged since it is
            # early in the boot process. Is there a way to log this message?
            log -p w -t PIL no modem image found;;
      esac

      case `ls adsp.mdt 2>/dev/null` in
         adsp.mdt)
            for imgfile in adsp*; do
               ln -s /firmware/image/$imgfile /system/etc/firmware/$imgfile 2>/dev/null
            done
            ;;
         *)
            log -p w -t PIL no adsp image found;;
      esac

      case `ls wcnss.mdt 2>/dev/null` in
         wcnss.mdt)
            for imgfile in wcnss*; do
               ln -s /firmware/image/$imgfile /system/etc/firmware/$imgfile 2>/dev/null
            done
            ;;
         *)
            log -p w -t PIL no wcnss image found;;
      esac

      case `ls mba.mdt 2>/dev/null` in
         mba.mdt)
            for imgfile in mba*; do
               ln -s /firmware/image/$imgfile /system/etc/firmware/$imgfile 2>/dev/null
            done
            ;;
         *)
            log -p w -t PIL no mba image found;;
      esac

      ;;

   *)
      # Nothing to do. No links needed
      ;;
esac

cd /