This provides additional information about the file descriptor instance as
opened by a process.  Typically it will be accessed via the C<fdinfo> attribute
of L<doc:Linux::Fuser::Procinfo> and need not be constructed in user code.


Because it needs to read the C</proc/<pid>/fdinfo/<fd>> entry which will only be
readable by the user that has the file open this may not work as expected unless
run by the superuser.


Linux::Fuser::FileDescriptor - describe a file opened by a process


NAME

DESCRIPTION

There are no public methods only attributes.


ATTRIBUTES


class Linux::Fuser::FileDescriptor {

    #| The file descriptor number in use by the process
    has Int $.fd;
    #| The position in the file the opening process has the file pointer
    has Int $.pos;
    #| mnt-id (this may be 0 in some virtualised environments)
    has Int $.mnt-id ;
    #| The flags with which the file was opened
    has Int $.flags;

    #| The L<doc:IO::Path> of the /proc entry as passed to the constructor
    has IO::Path $.proc-file;
    #| The L<doc:IO::Path> of the /proc/<pid>/fd entry as passed to the constructor
    has IO::Path $.fd-file;
    #| The L<doc:IO::Path> corresponding to the /proc/<pid>/fdinfo
    has IO::Path $.fd-info;

    submethod BUILD(:$!proc-file, :$!fd-file) {
        $!fd = $!fd-file.basename.Int;
        $!fd-info = $!proc-file.append('fdinfo', $!fd.Str);
        my %info = $!fd-info.open(:bin).read(255).decode.lines.map( { $_.split(/\:\t/) }).flat.hash;
        $!pos =  %info<pos>.Int if %info<pos>.defined;
        $!mnt-id = %info<mnt_id>.defined ?? %info<mnt_id>.Int !! 0;
        my $str_fl = %info<flags>;
        $!flags = :8($str_fl) if $str_fl.defined;
    }
}
# vim: expandtab shiftwidth=4 ft=raku


root

An array of objects of this type are returned by the method C<fuser> in
L<doc:Linux::Fuser>.  It describes a single process that has the requested
file open.


Because it has to read special files that may only be readable by the user that
owns the process it may not work as expected for users other than the superuser.


Typically objects of this type will be created as needed by C<fuser> and there
should be no need for user code to construct new objects.


Linux::Fuxer::Procinfo - describe the process that has a file opened.


This module provides information similar to the Unix command 'fuser'
about which processes have a particular file open.  The way that this
works is highly unlikely to work on any other OS other than Linux and
even then it may not work on other than 2.2.* kernels. Some features
may not work correctly on kernel versions older than 2.6.22


It should also be borne in mind that this may not produce entirely
accurate results unless you are running the program as the Superuser
as the module will require access to files in /proc that may only be
readable by their owner.


Linux::Fuser - Determine which processes have a file open


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Linux::Fuser::FileDescriptor - describe a file opened by a process

NAME

ATTRIBUTES

Linux::Fuser v0.0.15

Authors

License

Dependencies

Test Dependencies

Provides

Documentation