Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /proc/self/root/proc/thread-self/root/usr/lib64/perl5/vendor_perl/File/FcntlLock/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

# -*- cperl -*-
#
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
# Copyright (C) 2002-2014 Jens Thoms Toerring <[email protected]>


# Package for file locking with fcntl(2) in which the binary layout of
# the C flock struct has been determined via a C program on installation
# and appropriate Perl code been appended to the package.

package File::FcntlLock::Pure;

use 5.006;
use strict;
use warnings;
use base qw( File::FcntlLock::Core );


our $VERSION = File::FcntlLock::Core->VERSION;

our @EXPORT = @File::FcntlLock::Core::EXPORT;


###########################################################
# Function for doing the actual fcntl() call: assembles the binary
# structure that must be passed to fcntl() from the File::FcntlLock
# object we get passed, calls it and then modifies the File::FcntlLock
# with the data from the flock structure

sub lock {
    my ( $self, $fh, $action ) = @_;
    my $buf = $self->pack_flock( );
    my $ret = fcntl( $fh, $action, $buf );

    if ( $ret  ) {
		$self->unpack_flock( $buf );
        $self->{ errno } = $self->{ error } = undef;
    } else {
        $self->get_error( $self->{ errno } = $! + 0 );
    }

    return $ret;
}


###########################################################

# Method created automatically while running 'perl Makefile.PL'
# (based on the the C 'struct flock' in <fcntl.h>) for packing
# the data from the 'flock_struct' into a binary blob to be
# passed to fcntl().

sub pack_flock {
    my $self = shift;
    return pack( 'ssx4qqlx4',
                 $self->{ l_type },
                 $self->{ l_whence },
                 $self->{ l_start },
                 $self->{ l_len },
                 $self->{ l_pid } );
}


###########################################################

# Method created automatically while running 'perl Makefile.PL'
# (based on the the C 'struct flock' in <fcntl.h>) for unpacking
# the binary blob received from a call of fcntl() into the
# 'flock_struct'.

sub unpack_flock {
     my ( $self, $data ) = @_;
     ( $self->{ l_type   },
       $self->{ l_whence },
       $self->{ l_start  },
       $self->{ l_len    },
       $self->{ l_pid    } ) = unpack( 'ssx4qqlx4', $data );
}


1;