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use nix::unistd::fchown

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instead of re-implementing it, now that we depend on >=0.19

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This commit is contained in:
Fabian Grünbichler 2021-12-02 09:02:24 +01:00
parent 1db9a5bc0e
commit 6bb932e604
1 changed files with 1 additions and 11 deletions
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12
proxmox-sys/src/fs/mod.rs
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@ -7,7 +7,6 @@ use anyhow::{bail, Error};
use std::os::unix::io::{AsRawFd, RawFd}; use std::os::unix::io::{AsRawFd, RawFd};
use nix::unistd::{Gid, Uid}; use nix::unistd::{Gid, Uid};
use nix::sys::stat; use nix::sys::stat;
use nix::errno::Errno;
pub mod acl; pub mod acl;
@ -27,16 +26,7 @@ pub mod xattr;
/// Change ownership of an open file handle /// Change ownership of an open file handle
pub fn fchown(fd: RawFd, owner: Option<Uid>, group: Option<Gid>) -> Result<(), Error> { pub fn fchown(fd: RawFd, owner: Option<Uid>, group: Option<Gid>) -> Result<(), Error> {
// According to the POSIX specification, -1 is used to indicate that owner and group nix::unistd::fchown(fd, owner, group).map_err(|err| err.into())
// are not to be changed. Since uid_t and gid_t are unsigned types, we have to wrap
// around to get -1 (copied fron nix crate).
let uid = owner.map(Into::into).unwrap_or(!(0 as libc::uid_t));
let gid = group.map(Into::into).unwrap_or(!(0 as libc::gid_t));
let res = unsafe { libc::fchown(fd, uid, gid) };
Errno::result(res)?;
Ok(())
} }
/// Define permissions, owner and group when creating files/dirs /// Define permissions, owner and group when creating files/dirs