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diff --git a/sys/tools/embed_mfs.sh b/sys/tools/embed_mfs.sh
--- a/sys/tools/embed_mfs.sh
+++ b/sys/tools/embed_mfs.sh
@@ -34,60 +34,60 @@
#
if [ $# -ne 2 ]; then
- echo "usage: $(basename $0) target mfs_image"
+ echo "usage: $(basename "$0") target mfs_image"
exit 0
fi
if [ ! -w "$1" ]; then
- echo $1 not writable
+ echo "$1" not writable
exit 1
fi
-mfs_size=`stat -f '%z' $2 2> /dev/null`
+mfs_size=$(stat -f '%z' "$2" 2> /dev/null)
# If we can't determine MFS image size - bail.
-if [ -z ${mfs_size} ]; then
+if [ -z "${mfs_size}" ]; then
echo "Can't determine MFS image size"
exit 1
fi
err_no_mfs="Can't locate mfs section within "
-if file -b $1 | grep -q '^ELF ..-bit .SB executable'; then
+if file -b "$1" | grep -q '^ELF ..-bit .SB executable'; then
- sec_info=`elfdump -c $1 2> /dev/null | grep -A 5 -E "sh_name: oldmfs$"`
+ sec_info=$(elfdump -c "$1" 2> /dev/null | grep -A 5 -E "sh_name: oldmfs$")
# If we can't find the mfs section within the given kernel - bail.
if [ -z "${sec_info}" ]; then
echo "${err_no_mfs} $1"
exit 1
fi
- sec_size=`echo "${sec_info}" | awk '/sh_size/ {print $2}' 2>/dev/null`
- sec_start=`echo "${sec_info}" | \
- awk '/sh_offset/ {print $2}' 2>/dev/null`
+ sec_size=$(echo "${sec_info}" | awk '/sh_size/ {print $2}' 2>/dev/null)
+ sec_start=$(echo "${sec_info}" | \
+ awk '/sh_offset/ {print $2}' 2>/dev/null)
else
#try to find start byte of MFS start flag otherwise - bail.
- sec_start=`strings -at d $1 | grep "MFS Filesystem goes here"` || \
+ sec_start=$(strings -at d "$1" | grep "MFS Filesystem goes here") || \
{ echo "${err_no_mfs} $1"; exit 1; }
- sec_start=`echo ${sec_start} | awk '{print $1}'`
+ sec_start=$(echo "${sec_start}" | awk '{print $1}')
#try to find start byte of MFS end flag otherwise - bail.
- sec_end=`strings -at d $1 | \
- grep "MFS Filesystem had better STOP here"` || \
+ sec_end=$(strings -at d "$1" | \
+ grep "MFS Filesystem had better STOP here") || \
{ echo "${err_no_mfs} $1"; exit 1; }
- sec_end=`echo ${sec_end} | awk '{print $1}'`
+ sec_end=$(echo "${sec_end}" | awk '{print $1}')
#calculate MFS section size
- sec_size=`expr ${sec_end} - ${sec_start}`
+ sec_size=$(( sec_end - sec_start))
fi
# If the mfs section size is smaller than the mfs image - bail.
-if [ ${sec_size} -lt ${mfs_size} ]; then
+if [ "${sec_size}" -lt "${mfs_size}" ]; then
echo "MFS image too large"
exit 1
fi
# Dump the mfs image into the mfs section
-dd if=$2 ibs=8192 of=$1 obs=${sec_start} oseek=1 conv=notrunc 2> /dev/null && \
+dd if="$2" ibs=8192 of="$1" obs="${sec_start}" oseek=1 conv=notrunc 2> /dev/null && \
echo "MFS image embedded into $1" && exit 0

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