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authorDenis Vlasenko2008-05-24 20:54:14 +0000
committerDenis Vlasenko2008-05-24 20:54:14 +0000
commitbd23fbbd0a0491e00bac89fc30f31972525d95bb (patch)
tree526e7e8a52ccb222a4bbf6d5e4b567a8e908139f /docs
parent8e2c9e1518d42320ebd4b3ff09220d79a199e8ff (diff)
downloadbusybox-bd23fbbd0a0491e00bac89fc30f31972525d95bb.zip
busybox-bd23fbbd0a0491e00bac89fc30f31972525d95bb.tar.gz
docs/depmod: and example of depmod in shell/sed/awk...
Diffstat (limited to 'docs')
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diff --git a/docs/depmod b/docs/depmod
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+#!/bin/sh
+#
+# Simple depmod, use to generate modprobe.conf
+#
+# Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
+#
+# Licensed under GPLv2
+#
+
+local BASE="${1:-/usr/lib/modules}"
+
+find "$BASE" -name '*.ko.gz' | while read I ; do
+ N=`basename "$I" '.ko.gz'`
+ echo -n "@$N"
+ zcat "$I" | strings | grep '^depends=' | sed -e 's/^depends=$//' -e 's/^depends=/,/' -e 's/,/ @/g'
+done | awk '
+{
+ # modules which has no dependencies are resolved
+ if ( NF == 1 ) { res[$1] = ""; next }
+ # others have to be resolved based on those which already resolved
+ i = $1; $1 = ""; deps[i] = $0; ++ndeps
+}
+END {
+ # resolve implicit dependencies
+ while ( ndeps ) for (mod in deps) {
+ if ( index(deps[mod], "@") > 0 ) {
+ $0 = deps[mod]
+ for ( i=1; i<=NF; ++i ) {
+ if ( substr($i,1,1) == "@" ) {
+ if ( $i in res ) {
+ $i = res[$i] " " substr($i,2)
+ }
+ }
+ }
+ deps[mod] = $0
+ } else {
+ res[mod] = deps[mod]
+ delete deps[mod]
+ --ndeps
+ }
+ }
+
+ # output dependencies in modules.dep format
+ for ( mod in res ) {
+ $0 = res[mod]
+ s = ""
+ delete a
+ for ( i=1; i<=NF; ++i ) {
+ if ( ! ($i in a) ) {
+ a[$i] = $i
+ s = " ," $i s
+ }
+ }
+ print "," substr(mod,2) ":" s
+ }
+}
+' | sort | sed -r -e "s!,([^,: ]*)!/usr/lib/modules/\\1.ko.gz!g"