/usr/share/perl/5.14.2/XSLoader.pm is in perl-base 5.14.2-21+deb7u3.
This file is owned by root:root, with mode 0o644.
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 | # Generated from XSLoader.pm.PL (resolved %Config::Config value)
package XSLoader;
$VERSION = "0.13";
#use strict;
# enable debug/trace messages from DynaLoader perl code
# $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug;
package DynaLoader;
# No prizes for guessing why we don't say 'bootstrap DynaLoader;' here.
# NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB
boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) &&
!defined(&dl_error);
package XSLoader;
sub load {
package DynaLoader;
my ($module, $modlibname) = caller();
if (@_) {
$module = $_[0];
} else {
$_[0] = $module;
}
# work with static linking too
my $boots = "$module\::bootstrap";
goto &$boots if defined &$boots;
goto \&XSLoader::bootstrap_inherit unless $module and defined &dl_load_file;
my @modparts = split(/::/,$module);
my $modfname = $modparts[-1];
my $modpname = join('/',@modparts);
my $c = @modparts;
$modlibname =~ s,[\\/][^\\/]+$,, while $c--; # Q&D basename
my $file = "$modlibname/auto/$modpname/$modfname.so";
# print STDERR "XSLoader::load for $module ($file)\n" if $dl_debug;
my $bs = $file;
$bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library
if (-s $bs) { # only read file if it's not empty
# print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug;
eval { do $bs; };
warn "$bs: $@\n" if $@;
}
goto \&XSLoader::bootstrap_inherit if not -f $file or -s $bs;
my $bootname = "boot_$module";
$bootname =~ s/\W/_/g;
@DynaLoader::dl_require_symbols = ($bootname);
my $boot_symbol_ref;
# Many dynamic extension loading problems will appear to come from
# this section of code: XYZ failed at line 123 of DynaLoader.pm.
# Often these errors are actually occurring in the initialisation
# C code of the extension XS file. Perl reports the error as being
# in this perl code simply because this was the last perl code
# it executed.
my $libref = dl_load_file($file, 0) or do {
require Carp;
Carp::croak("Can't load '$file' for module $module: " . dl_error());
};
push(@DynaLoader::dl_librefs,$libref); # record loaded object
my @unresolved = dl_undef_symbols();
if (@unresolved) {
require Carp;
Carp::carp("Undefined symbols present after loading $file: @unresolved\n");
}
$boot_symbol_ref = dl_find_symbol($libref, $bootname) or do {
require Carp;
Carp::croak("Can't find '$bootname' symbol in $file\n");
};
push(@DynaLoader::dl_modules, $module); # record loaded module
boot:
my $xs = dl_install_xsub($boots, $boot_symbol_ref, $file);
# See comment block above
push(@DynaLoader::dl_shared_objects, $file); # record files loaded
return &$xs(@_);
}
sub bootstrap_inherit {
require DynaLoader;
goto \&DynaLoader::bootstrap_inherit;
}
1;
__END__
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