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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

// 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.


pub(crate) fn swap_off(nul_terminated_c_string: &[u8]) -> io::Result<()>
{
	let result = unsafe { swapoff(nul_terminated_c_string.as_ptr() as *const _) };
	if likely!(result == 0)
	{
		Ok(())
	}
	else if likely!(result == -1)
	{
		Err(io::Error::last_os_error())
	}
	else
	{
		unreachable_code(format_args!("swapoff() returned unexpected result {}", result))
	}
}