insmod.sh were replaced by a perl script (rmmod.pl)

From: Mauro Carvalho Chehab <mchehab@infradead.org>

insmod.sh were a hack, were somebody should check all dependencies
for each module. Several dependencies were mising, and, to keep it
updated for 178 modules is really hard.

rmmod.pl is a "smart" script: it does:
1) Check, for each found module on v4l, the correct order for each
   module;
2) Check any dependencies for out-of-tree modules;
3) rmmod/insmod at the correct order;
4) It have a table with the suggested debug parameter for each module.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 193 insertions, 0 deletions

diff --git a/v4l/scripts/rmmod.pl b/v4l/scripts/rmmod.pl
new file mode 100644
index 000000000..6cb690217
--- /dev/null
+++ b/v4l/scripts/rmmod.pl
@@ -0,0 +1,193 @@
+#!/usr/bin/perl
+use strict;
+use File::Find;
+
+my %depend = ();
+my %depend2 = ();
+my %rmlist = ();
+my @nodep;
+my @modlist;
+my @allmodules;
+my %reqmodules;
+my %loaded = ();
+my $i=0;
+
+# Device debug parameters
+#		Module name		   Debug option
+my %debug = (	"tuner"			=> "tuner_debug=1",
+		"dvb-core"		=> "cam_debug=1",
+		"dvb-ttpci"		=> "debug=247",
+		"b2c2-flexcop"		=> "debug=0x01",
+		"b2c2-flexcop-usb"	=> "debug=0x01",
+		"b2c2-flexcop-pci"	=> "debug=0x01",
+		"dvb-usb"		=> "debug=0x33",
+		"dvb-usb-gp8psk"	=> "debug=0x03",
+		"dvb-usb-vp7045"	=> "debug=0x03",
+		"dvb-usb-dtt200u"	=> "debug=0x03",
+		"dvb-usb-dibusb-common"	=> "debug=0x03",
+	    );
+
+
+sub parse_dir {
+	my $file = $File::Find::name;
+
+	if (!($file =~ /[.]ko$/)) {
+		return;
+	}
+
+	my $module = $file;
+	$module =~ s|^[./]*(.*)[.]ko|\1|;
+
+	open IN,  "modinfo $file|grep depends|cut -b 17-|";
+	while (<IN>) {
+		my $deps = $_;
+		$deps =~ s/\n//;
+		$deps =~ s/[,]/ /g;
+		$deps = " $deps ";
+		$depend{$module} = $deps;
+		push @allmodules, $module;
+		$i++;
+	}
+	close IN;
+}
+
+sub parse_loaded {
+	open IN,  "/proc/modules";
+	while (<IN>) {
+		m/^([\w\d_-]+)/;
+		$loaded{$1}=1;
+	}
+	close IN;
+}
+
+sub cleandep()
+{
+	my $dep;
+
+	while ( my ($k, $v) = each(%depend) ) {
+		my $arg=$v;
+		my $arg2=" ";
+		while (!($arg =~ m/^\s*$/)) {
+			if ($arg =~ m/^ ([^ ]+) /) {
+				my $val=$1;
+				if (exists($depend{$val})) {
+					$arg2="$arg2 $val ";
+				} else {
+					$reqmodules{$val}=1;
+				}
+			}
+			$arg =~ s/^ [^ ]+//;
+			$arg2 =~ s/\s\s+/ /;
+		}
+		$depend2 { $k } = $arg2;
+	}
+
+}
+
+sub rmdep()
+{
+	my $dep;
+
+	while ($dep=pop @nodep) {
+		while ( my ($k, $v) = each(%depend2) ) {
+			if ($v =~ m/\s($dep)\s/) {
+				$v =~ s/\s${dep}\s/ /;
+				$v =~ s/\s${dep}\s/ /;
+				$v =~ s/\s${dep}\s/ /;
+				$depend2 {$k} = $v;
+			}
+		}
+	}
+}
+
+sub orderdep ()
+{
+	my $old;
+	do {
+		$old=$i;
+		while ( my ($key, $value) = each(%depend2) ) {
+			if ($value =~ m/^\s*$/) {
+				push @nodep, $key;
+				push @modlist, $key;
+				$i=$i-1;
+				delete $depend2 {$key};
+			}
+		}
+		rmdep();
+	} until ($old==$i);
+	while ( my ($key, $value) = each(%depend2) ) {
+		printf "ERROR: bad dependencies - $key ($value)\n";
+	}
+}
+
+sub insmod ($)
+{
+	my $debug=shift;
+
+	while ( my ($key, $value) = each(%reqmodules) ) {
+		printf ("modprobe $key\n");
+		system ("modprobe $key");
+	}
+
+	foreach my $key (@modlist) {
+		if ($debug) {
+			my $dbg=$debug{$key};
+
+			printf "insmod ./$key.ko $dbg\n";
+			system "insmod ./$key.ko $dbg\n";
+		} else {
+			printf "insmod ./$key.ko\n";
+			system "insmod ./$key.ko\n";
+		}
+	}
+}
+
+sub rmmod ()
+{
+	my $cmd="rmmod";
+	while (my $key=pop @modlist) {
+		my $dep=$key;
+		$dep=~s/[\-]/_/g;
+		if (exists ($loaded{$dep})) {
+			printf "$cmd ./$key.ko\n";
+			system "$cmd ./$key.ko\n";
+		}
+	}
+}
+
+sub prepare_cmd()
+{
+	find(\&parse_dir, ".");
+	printf "found $i modules\n";
+
+	cleandep();
+	orderdep();
+}
+
+# main
+my $mode=shift;
+if ($mode eq "load") {
+		prepare_cmd;
+		insmod(0);
+} else {
+	if ($mode eq "unload") {
+		prepare_cmd;
+		parse_loaded;
+		rmmod;
+	} else {
+		if ($mode eq "reload") {
+			prepare_cmd;
+			parse_loaded;
+			rmmod;
+			insmod(0);
+		} else {
+			if ($mode eq "debug") {
+				prepare_cmd;
+				parse_loaded;
+				insmod(1);
+			} else {
+				printf "Usage: $0 [load|unload|reload]\n";
+			}
+		}
+	}
+}