From 4840f67fcbe02fe6428a0a29bcf329401242b739 Mon Sep 17 00:00:00 2001 From: Josh Triplett Date: Tue, 14 Sep 2021 18:29:38 -0700 Subject: Add chown functions to std::os::unix::fs to change the owner and group of files This is a straightforward wrapper that uses the existing helpers for C string handling and errno handling. Having this available is convenient for UNIX utility programs written in Rust, and avoids having to call unsafe functions like `libc::chown` directly and handle errors manually, in a program that may otherwise be entirely safe code. In addition, these functions provide a more Rustic interface by accepting appropriate traits and using `None` rather than `-1`. --- library/std/src/sys/unix/fs.rs | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'library/std/src/sys') diff --git a/library/std/src/sys/unix/fs.rs b/library/std/src/sys/unix/fs.rs index 6d7524a733a..a4fff9b2e64 100644 --- a/library/std/src/sys/unix/fs.rs +++ b/library/std/src/sys/unix/fs.rs @@ -1416,6 +1416,23 @@ pub fn copy(from: &Path, to: &Path) -> io::Result { Ok(bytes_copied as u64) } +pub fn chown(path: &Path, uid: u32, gid: u32) -> io::Result<()> { + let path = cstr(path)?; + cvt(unsafe { libc::chown(path.as_ptr(), uid as libc::uid_t, gid as libc::gid_t) })?; + Ok(()) +} + +pub fn fchown(fd: c_int, uid: u32, gid: u32) -> io::Result<()> { + cvt(unsafe { libc::fchown(fd, uid as libc::uid_t, gid as libc::gid_t) })?; + Ok(()) +} + +pub fn lchown(path: &Path, uid: u32, gid: u32) -> io::Result<()> { + let path = cstr(path)?; + cvt(unsafe { libc::lchown(path.as_ptr(), uid as libc::uid_t, gid as libc::gid_t) })?; + Ok(()) +} + #[cfg(not(any(target_os = "fuchsia", target_os = "vxworks")))] pub fn chroot(dir: &Path) -> io::Result<()> { let dir = cstr(dir)?; -- cgit 1.4.1-3-g733a5