sys-linux-namespace/lib/Sys/Linux/Unshare.pm

69 lines
2.2 KiB
Perl

package Sys::Linux::Unshare;
#use strict;
use warnings;
use Data::Dumper;
require Exporter;
our @ISA = qw/Exporter/;
require XSLoader;
XSLoader::load();
BEGIN {
# Force reloading of all .ph files
delete $INC{$_} for (grep {/\.ph$/} keys %INC);
require 'syscall.ph';
}
my @unshare_consts = qw/CSIGNAL CLONE_VM CLONE_FS CLONE_FILES CLONE_SIGHAND CLONE_PTRACE CLONE_VFORK CLONE_PARENT CLONE_THREAD CLONE_NEWNS CLONE_SYSVSEM CLONE_SETTLS CLONE_PARENT_SETTID CLONE_CHILD_CLEARTID CLONE_DETACHED CLONE_UNTRACED CLONE_CHILD_SETTID CLONE_NEWCGROUP CLONE_NEWUTS CLONE_NEWIPC CLONE_NEWUSER CLONE_NEWPID CLONE_NEWNET CLONE_IO/;
our @EXPORT_OK = (@unshare_consts, qw/unshare/);
our %EXPORT_TAGS = (
'consts' => \@unshare_consts,
'all' => [@unshare_consts, qw/unshare/],
);
sub unshare {
my ($flags) = @_;
local $! = 0;
### FIXME XXX HACK FUCK YOU = 272 unshare syscall number on x86_64
my $ret = syscall(SYS_unshare(), $flags);
if ($ret != 0) {
die "unshare failed $ret $!";
}
return;
}
use constant {CSIGNAL => 0x000000ff,
CLONE_VM => 0x00000100,
CLONE_FS => 0x00000200,
CLONE_FILES => 0x00000400,
CLONE_SIGHAND => 0x00000800,
CLONE_PTRACE => 0x00002000,
CLONE_VFORK => 0x00004000,
CLONE_PARENT => 0x00008000,
CLONE_THREAD => 0x00010000,
CLONE_NEWNS => 0x00020000,
CLONE_SYSVSEM => 0x00040000,
CLONE_SETTLS => 0x00080000,
CLONE_PARENT_SETTID => 0x00100000,
CLONE_CHILD_CLEARTID => 0x00200000,
CLONE_DETACHED => 0x00400000,
CLONE_UNTRACED => 0x00800000,
CLONE_CHILD_SETTID => 0x01000000,
CLONE_NEWCGROUP => 0x02000000,
CLONE_NEWUTS => 0x04000000,
CLONE_NEWIPC => 0x08000000,
CLONE_NEWUSER => 0x10000000,
CLONE_NEWPID => 0x20000000,
CLONE_NEWNET => 0x40000000,
CLONE_IO => 0x80000000};
1;