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-rwxr-xr-xexamples/depmod.pl65
1 files changed, 56 insertions, 9 deletions
diff --git a/examples/depmod.pl b/examples/depmod.pl
index c356d27..6b47bad 100755
--- a/examples/depmod.pl
+++ b/examples/depmod.pl
@@ -13,7 +13,7 @@
# This program is free software; you can redistribute it and/or modify it
# under the same terms as Perl itself.
-use Getopt::Long;
+use Getopt::Long qw(:config no_auto_abbrev no_ignore_case);
use File::Find;
use strict;
@@ -23,6 +23,9 @@ my $basedir="";
my $kernel="";
my $kernelsyms="";
my $symprefix="";
+my $all=0;
+my $quick=0;
+my $errsyms=0;
my $stdout=0;
my $verbose=0;
my $help=0;
@@ -44,6 +47,8 @@ $0 -b basedir { -k <vmlinux> | -F <System.map> } [options]...
-n --stdout : Write to stdout instead of <basedir>/modules.dep
-v --verbose : Print out lots of debugging stuff
-P --symbol-prefix : Symbol prefix
+ -a --all : Probe all modules (default/only thing supported)
+ -e --errsyms : Report any symbols not supplied by modules/kernel
TXT
# get command-line options
@@ -55,14 +60,23 @@ GetOptions(
"stdout|n" => \$stdout,
"verbose|v" => \$verbose,
"symbol-prefix|P=s" => \$symprefix,
+ "all|a" => \$all,
+ # unsupported options
+ "quick|A" => \$quick,
+ # ignored options (for historical usage)
+ "quiet|q",
+ "root|r",
+ "unresolved-error|u"
);
die $usage if $help;
die $usage unless $basedir && ( $kernel || $kernelsyms );
die "can't use both -k and -F\n\n$usage" if $kernel && $kernelsyms;
+die "sorry, -A/--quick is not supported" if $quick;
+die "--errsyms requires --kernelsyms" if $errsyms && !$kernelsyms;
# Strip any trailing or multiple slashes from basedir
-$basedir =~ s-(/)\1+-/-g;
+$basedir =~ s-/+$--g;
# The base directory should contain /lib/modules somewhere
if($basedir !~ m-/lib/modules-) {
@@ -137,6 +151,35 @@ foreach my $module (keys %$dep) {
}
}
+# build a complete dependency list for each module and make sure it
+# is kept in order proper order
+my $mod2 = {};
+sub maybe_unshift
+{
+ my ($array, $ele) = @_;
+ # chop off the leading path /lib/modules/<kver>/ as modprobe
+ # will handle relative paths just fine
+ $ele =~ s:^/lib/modules/[^/]*/::;
+ foreach (@{$array}) {
+ if ($_ eq $ele) {
+ return;
+ }
+ }
+ unshift (@{$array}, $ele);
+}
+foreach my $module (keys %$mod) {
+ warn "filling out module: $module\n" if $verbose;
+ @{$mod2->{$module}} = ();
+ foreach my $md (keys %{$mod->{$module}}) {
+ foreach my $md2 (keys %{$mod->{$md}}) {
+ warn "outputting $md2\n" if $verbose;
+ maybe_unshift (\@{$mod2->{$module}}, $md2);
+ }
+ warn "outputting $md\n" if $verbose;
+ maybe_unshift (\@{$mod2->{$module}}, $md);
+ }
+}
+
# figure out where the output should go
if ($stdout == 0) {
open(STDOUT, ">$basedir/modules.dep")
@@ -151,8 +194,11 @@ foreach my $module ( keys %$mod ) {
print join(" \\\n\t",@sorted);
print "\n\n";
} else {
- print "$module: ";
- my @sorted = sort bydep keys %{$mod->{$module}};
+ my $shortmod = $module;
+ $shortmod =~ s:^/lib/modules/[^/]*/::;
+ print "$shortmod:";
+ my @sorted = @{$mod2->{$module}};
+ printf " " if @sorted;
print join(" ",@sorted);
print "\n";
}
@@ -163,15 +209,16 @@ sub build_ref_tables
{
my ($name, $sym_ar, $exp, $dep) = @_;
- my $ksymtab = grep m/ __ksymtab/, @$sym_ar;
+ my $ksymtab = grep m/ ${symprefix}__ksymtab/, @$sym_ar;
# gather the exported symbols
if($ksymtab){
# explicitly exported
foreach ( @$sym_ar ) {
- / __ksymtab_(.*)$/ and do {
- warn "sym = $1\n" if $verbose;
- $exp->{$1} = $name;
+ / ${symprefix}__ksymtab_(.*)$/ and do {
+ my $sym = ${symprefix} . $1;
+ warn "sym = $sym\n" if $verbose;
+ $exp->{$sym} = $name;
};
}
} else {
@@ -189,7 +236,7 @@ sub build_ref_tables
# gather the unresolved symbols
foreach ( @$sym_ar ) {
- !/ __this_module/ && / U (.*)$/ and do {
+ !/ ${symprefix}__this_module/ && / U (.*)$/ and do {
warn "und = $1\n" if $verbose;
push @{$dep->{$name}}, $1;
};