/usr/bin/ldd.fakechroot is in fakechroot 2.16-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | #!/usr/bin/perl
# fakeldd
#
# Replacement for ldd with usage of objdump
#
# (c) 2003-2010 Piotr Roszatycki <dexter@debian.org>, LGPL
use strict;
my @Libs = ();
my %Libs = ();
my $Status = 0;
my $Dynamic = 0;
my $Format = '';
my $Ldsodir = "/lib";
my @Ld_Library_Path = qw(/usr/lib /lib /usr/lib32 /lib32 /usr/lib64 /lib64);
sub ldso {
my ($lib) = @_;
return if $Libs{$lib};
my $path;
if ($lib =~ /^\//) {
$path = $lib;
}
else {
foreach my $dir (@Ld_Library_Path) {
next unless -f "$dir/$lib";
my $badformat = 0;
local *PIPE;
open PIPE, "objdump -p '$dir/$lib' 2>/dev/null |";
while (my $line = <PIPE>) {
if ($line =~ /file format (\S*)$/) {
$badformat = 1 unless $1 eq $Format;
last;
}
}
close PIPE;
next if $badformat;
$path = "$dir/$lib";
last;
}
}
push @Libs, $lib;
if (-f $path) {
$Libs{$lib} = $path;
objdump($path);
}
}
sub objdump {
my (@files) = @_;
foreach my $file (@files) {
local *PIPE;
open PIPE, "objdump -p '$file' 2>/dev/null |";
while (my $line = <PIPE>) {
$line =~ s/^\s+//;
if ($line =~ /file format (\S*)$/) {
if (not $Format) {
$Format = $1;
if ($^O eq 'linux') {
if ($Format =~ /^elf64-/) {
push @Libs, 'linux-vdso.so.1';
$Libs{'linux-vdso.so.1'} = '';
}
else {
push @Libs, 'linux-gate.so.1';
$Libs{'linux-gate.so.1'} = '';
}
}
foreach my $lib (split /:/, $ENV{LD_PRELOAD}||'') {
ldso($lib);
}
}
else {
next unless $Format eq $1;
}
}
if (not $Dynamic and $line =~ /^Dynamic Section:/) {
$Dynamic = 1;
}
next unless $line =~ /^ \s* NEEDED \s+ (.*) \s* $/x;
my $needed = $1;
if ($needed =~ /^ld(-linux)?(\.|-)/) {
$needed = "$Ldsodir/$needed";
}
ldso($needed);
}
close PIPE;
}
}
sub load_ldsoconf {
my ($file) = @_;
local *FH;
open FH, $file;
while (my $line = <FH>) {
chomp $line;
$line =~ s/#.*//;
next if $line =~ /^\s*$/;
if ($line =~ /^include\s+(.*)\s*/) {
my $include = $1;
foreach my $incfile (glob $include) {
load_ldsoconf($incfile);
}
next;
}
unshift @Ld_Library_Path, $line;
}
close FH;
}
MAIN: {
my @args = @ARGV;
if (not @args) {
print STDERR "fakeldd: missing file arguments\n";
exit 1;
}
if (not `which objdump`) {
print STDERR "fakeldd: objdump: command not found: install binutils package\n";
exit 1;
}
load_ldsoconf('/etc/ld.so.conf');
unshift @Ld_Library_Path, split(/:/, $ENV{LD_LIBRARY_PATH}||'');
while ($args[0] =~ /^-/) {
my $arg = $args[0];
shift @ARGV;
last if $arg eq "--";
}
foreach my $file (@args) {
%Libs = ();
$Dynamic = 0;
if (@args > 1) {
print "$file:\n";
}
if (not -f $file) {
print STDERR "ldd: $file: No such file or directory\n";
$Status = 1;
next;
}
objdump($file);
if ($Dynamic == 0) {
print "\tnot a dynamic executable\n";
$Status = 1;
}
elsif (scalar %Libs eq "0") {
print "\tstatically linked\n";
}
my $address = '0x' . '0' x ($Format =~ /^elf64-/ ? 16 : 8);
foreach my $lib (@Libs) {
if ($lib =~ /^\//) {
printf "\t%s (%s)\n", $lib, $address;
}
elsif (defined $Libs{$lib}) {
printf "\t%s => %s (%s)\n", $lib, $Libs{$lib}, $address;
}
else {
printf "\t%s => not found\n", $lib;
}
}
}
}
END {
$? = $Status;
}
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