X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=scripts%2Fextract-ikconfig;h=72997c353cb363961139a8adf3dfa4ad1ae22d5a;hb=c197facc8ea08062f8f949aade6a33649ee06771;hp=d9f9f34b22abb1eb8dd6995e06ffe25ac230a4a2;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=safe%2Fjmp%2Flinux-2.6

diff --git a/scripts/extract-ikconfig b/scripts/extract-ikconfig
index d9f9f34..72997c3 100755
--- a/scripts/extract-ikconfig
+++ b/scripts/extract-ikconfig
@@ -4,11 +4,12 @@
 # $arg1 is [b]zImage filename
 
 binoffset="./scripts/binoffset"
+test -e $binoffset || cc -o $binoffset ./scripts/binoffset.c || exit 1
 
 IKCFG_ST="0x49 0x4b 0x43 0x46 0x47 0x5f 0x53 0x54"
 IKCFG_ED="0x49 0x4b 0x43 0x46 0x47 0x5f 0x45 0x44"
-function dump_config {
-    typeset file="$1"
+dump_config() {
+    file="$1"
 
     start=`$binoffset $file $IKCFG_ST 2>/dev/null`
     [ "$?" != "0" ] && start="-1"
@@ -17,10 +18,10 @@ function dump_config {
     fi
     end=`$binoffset $file $IKCFG_ED 2>/dev/null`
 
-    let start="$start + 8"
-    let size="$end - $start"
+    start=`expr $start + 8`
+    size=`expr $end - $start`
 
-    head --bytes="$end" "$file" | tail --bytes="$size" | zcat
+    dd if="$file" ibs=1 skip="$start" count="$size" 2>/dev/null | zcat
 
     clean_up
     exit 0
@@ -45,7 +46,7 @@ then
 	exit 1
 fi
 
-TMPFILE="/tmp/ikconfig-$$"
+TMPFILE=`mktemp -t ikconfig-XXXXXX` || exit 1
 image="$1"
 
 # vmlinux: Attempt to dump the configuration from the file directly