crashtest-r0ket/tools/smartflash/smartflash

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#!/usr/bin/perl
use strict;
$|=1;
my $DEV="/sys/bus/usb/devices";
sub getline{
my($path)=@_;
open(my $f,"<",$DEV."/".$path) || do {
# print "failed opening $path: $!\n";
return "";
};
my $l=<$f>;
close($f);
chomp($l);
return $l;
};
my %found;
my %done;
sub gosub {
my ($dev,$grep)=@_;
my $dh;
my $dir;
opendir($dh, $DEV."/".$dev) || do {
# print "Failure for $dev?\n";
return "";
};
($dir)=grep {/$grep/} grep {/^[^.]/} readdir($dh);
if($dir eq ""){
return "";
};
close $dh;
$dev.="/".$dir;
return $dev;
};
sub getdev{
my ($dev)=@_;
my $dh;
my $dir;
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$dev=gosub($dev,":1") || return "";
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$dev=gosub($dev,"^host");
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$dev=gosub($dev,"^target") || return "";
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$dev=~/target(.*)/;
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$dev=gosub($dev,$1) || return "";
$dev=gosub($dev,"^block") || return "";
$dev=gosub($dev,".") || return "";
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$dev=~m!/([^/]*)$!;
my $r=$1;
if($r!~/^sd/){
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print "Strange device? $dev -> $r\n";
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return "";
};
return $r;
};
my %pids;
use POSIX ":sys_wait_h";
my $kid;
$SIG{CHLD}=sub {
do {
$kid = waitpid(-1, WNOHANG);
delete $pids{$kid};
}while $kid>0;
};
sub dwim{
my($dev)=@_;
# print ("checking $dev\n");
my $pr=getline($dev."/idProduct");
return -1 if($pr eq "");
my $ve=getline($dev."/idVendor");
my $mf=getline($dev."/manufacturer");
# print "$pr:$ve\n";
if("$ve:$pr" eq "16c0:08ac") {
return 1 if $done{$dev}==1;
my $sdev=getdev($dev);
if ($sdev eq ""){
print "$dev not ready.\n";
return 1;
};
print "Mass storage $dev -> $sdev\n";
my $pid = fork();
if (not defined $pid) {
die "fork failed\n";
} elsif ($pid == 0) {
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system("./mass $sdev $dev");
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exit(0);
} else {
$pids{$pid}=1;
}
$done{$dev}=1;
return 1;
};
if("$ve:$pr" eq "04cc:0003") {
return 1 if $done{$dev}==2;
my $sdev=getdev($dev);
if ($sdev eq ""){
print "$dev not ready.\n";
return 1;
};
print "flash $dev -> $sdev\n";
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system("./flash $sdev $dev");
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$done{$dev}=2;
return 1;
};
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print "$ve:$pr [$mf] @ ";
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return -1;
};
my %disable;
while(1){
opendir(my $dh, $DEV);
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my @paths=grep {/^[^.]/} readdir($dh);
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close $dh;
# print "f: ",join(",",@files),"\n";
device:
for my $path (@paths){
next if ($disable{$path});
next if $path =~ /^usb/;
next if $path =~ /:/;
# print "p $path\n";
$found{$path}=1;
my $res=dwim($path);
if($res==-1){
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print "$path -- ignoring it forever\n";
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$disable{$path}=1;
};
};
for my $a (keys %done){
if (!$found{$a}){
delete $done{$a};
print "$a vanished\n";
};
};
%found=();
# print "\n";
sleep(1);
print scalar(keys %pids),"\r";
};