OpenBSD::Pledge(3p) | Perl Programmers Reference Guide | OpenBSD::Pledge(3p)

# NAME

OpenBSD::Pledge - Perl interface to OpenBSD pledge(2)

# SYNOPSIS

      use OpenBSD::Pledge;
      my $file = "/usr/share/dict/words";
      pledge( qw( rpath ) ) || die "Unable to pledge: $!";
      open my $fh, '<', $file or die "Unable to open $file: $!";
      pledge() || die "Unable to pledge again: $!";
      print grep { /pledge/i } readline($fh);
      close $fh;

# DESCRIPTION

This module provides a perl interface to OpenBSD's pledge(2) syscall(2).

Once you promise that your program will only use certain syscalls the kernel will kill the program if it attempts to call any other interfaces.

# EXPORT

Exports "pledge" by default.

# FUNCTIONS

## pledge

Perl interface to pledge(2).

            pledge(@promises)

The "stdio" promise is always implied, as perl(1) itself is useless without it.

Returns true on success, returns false and sets $! on failure

# BUGS AND LIMITATIONS

Perl is particularly fond of "stdio" so that promise is always added by "pledge".

# SEE ALSO

pledge(2)

<http://man.openbsd.org/pledge.2>

# AUTHOR

Andrew Hewus Fresh, <afresh1@OpenBSD.org>

# LICENSE AND COPYRIGHT

Copyright (C) 2015,2021 by Andrew Hewus Fresh <afresh1@OpenBSD.org>

Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

2021-06-10 | perl v5.40.1