linux-support 0.0.25

Comprehensive Linux support for namespaces, cgroups, processes, scheduling, parsing /proc, parsing /sys, signals, hyper threads, CPUS, NUMA nodes, unusual file descriptors, PCI devices and much, much more
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// This file is part of linux-support. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT. No part of linux-support, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2020 The developers of linux-support. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT.


/// Write the UID and GID maps.
#[inline(always)]
pub fn write_uid_and_gid_maps(proc_path: &ProcPath, child_process_identifier: ProcessIdentifier) -> io::Result<()>
{
	let namespaces_proc_path = NamespacesProcPath(proc_path);
	namespaces_proc_path.write_setgroups_permission(child_process_identifier, SetGroupsPermission::Deny)?;

	let user_identifiers_map = UserOrGroupIdentifierMap::<UserIdentifier>::unitary_for_current_user_identifier();
	namespaces_proc_path.write_user_or_group_identifiers_map(child_process_identifier, &user_identifiers_map)?;

	let group_identifiers_map = UserOrGroupIdentifierMap::<GroupIdentifier>::unitary_for_current_user_identifier();
	namespaces_proc_path.write_user_or_group_identifiers_map(child_process_identifier, &group_identifiers_map)
}