proxmox-backup/pbs-tools/src/fd.rs
Wolfgang Bumiller 6c76aa434d split proxmox-file-restore into its own crate
This also moves a couple of required utilities such as
logrotate and some file descriptor methods to pbs-tools.

Note that the logrotate usage and run-dir handling should be
improved to work as a regular user as this *should* (IMHO)
be a regular unprivileged command (including running
qemu given the kvm privileges...)

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
2021-09-01 12:23:29 +02:00

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Rust

//! Raw file descriptor related utilities.
use std::os::unix::io::RawFd;
use anyhow::Error;
use nix::fcntl::{fcntl, FdFlag, F_GETFD, F_SETFD};
/// Change the `O_CLOEXEC` flag of an existing file descriptor.
pub fn fd_change_cloexec(fd: RawFd, on: bool) -> Result<(), Error> {
let mut flags = unsafe { FdFlag::from_bits_unchecked(fcntl(fd, F_GETFD)?) };
flags.set(FdFlag::FD_CLOEXEC, on);
fcntl(fd, F_SETFD(flags))?;
Ok(())
}