X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=scripts%2Fextract-ikconfig;h=8187e6f0dc2fe6da060f99f9980dbf90707c02cf;hb=48c871c1f6a7c7044dd76774fb469e65c7e2e4e8;hp=d9f9f34b22abb1eb8dd6995e06ffe25ac230a4a2;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=firefly-linux-kernel-4.4.55.git

diff --git a/scripts/extract-ikconfig b/scripts/extract-ikconfig
index d9f9f34b22ab..8187e6f0dc2f 100755
--- a/scripts/extract-ikconfig
+++ b/scripts/extract-ikconfig
@@ -4,6 +4,7 @@
 # $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"
@@ -20,7 +21,7 @@ function dump_config {
     let start="$start + 8"
     let size="$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