perl-base 5.20.2-3+deb8u11 / usr / share / perl / 5.20.2 / XSLoader.pm

This file is indexed.

/usr/share/perl/5.20.2/XSLoader.pm is in perl-base 5.20.2-3+deb8u11.

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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
# Generated from XSLoader.pm.PL (resolved %Config::Config value)

package XSLoader;

$VERSION = "0.17";

#use strict;

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 $c--;    # Q&D basename
    # Does this look like a relative path?
    if ($modlibname !~ m|^[\\/]|) {
        # Someone may have a #line directive that changes the file name, or
        # may be calling XSLoader::load from inside a string eval.  We cer-
        # tainly do not want to go loading some code that is not in @INC,
        # as it could be untrusted.
        #
        # We could just fall back to DynaLoader here, but then the rest of
        # this function would go untested in the perl core, since all @INC
        # paths are relative during testing.  That would be a time bomb
        # waiting to happen, since bugs could be introduced into the code.
        #
        # So look through @INC to see if $modlibname is in it.  A rela-
        # tive $modlibname is not a common occurrence, so this block is
        # not hot code.
        FOUND: {
            for (@INC) {
                if ($_ eq $modlibname) {
                    last FOUND;
                }
            }
            # Not found.  Fall back to DynaLoader.
            goto \&XSLoader::bootstrap_inherit;
        }
    }
    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__

APT Browse - Built by Thomas Orozco.