OpenBSD::Pledge(3p)

Usage

  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;

Overview

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".

License and copyright

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.

Releases

23 releases since OpenBSD 5.9; the text changed 17 times.