diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/fcntl.rs | 1 | ||||
-rw-r--r-- | src/unistd.rs | 36 |
2 files changed, 37 insertions, 0 deletions
diff --git a/src/fcntl.rs b/src/fcntl.rs index 2201873a..d99c2c1a 100644 --- a/src/fcntl.rs +++ b/src/fcntl.rs @@ -23,6 +23,7 @@ pub use self::posix_fadvise::*; libc_bitflags!{ pub struct AtFlags: c_int { + AT_REMOVEDIR; AT_SYMLINK_NOFOLLOW; #[cfg(any(target_os = "android", target_os = "linux"))] AT_NO_AUTOMOUNT; diff --git a/src/unistd.rs b/src/unistd.rs index 96d8ace7..f422f091 100644 --- a/src/unistd.rs +++ b/src/unistd.rs @@ -1144,6 +1144,42 @@ pub fn unlink<P: ?Sized + NixPath>(path: &P) -> Result<()> { Errno::result(res).map(drop) } +/// Flags for `unlinkat` function. +#[derive(Clone, Copy, Debug)] +pub enum UnlinkatFlags { + RemoveDir, + NoRemoveDir, +} + +/// Remove a directory entry +/// +/// In the case of a relative path, the directory entry to be removed is determined relative to +/// the directory associated with the file descriptor `dirfd` or the current working directory +/// if `dirfd` is `None`. In the case of an absolute `path` `dirfd` is ignored. If `flag` is +/// `UnlinkatFlags::RemoveDir` then removal of the directory entry specified by `dirfd` and `path` +/// is performed. +/// +/// # References +/// See also [unlinkat(2)](http://pubs.opengroup.org/onlinepubs/9699919799/functions/unlinkat.html) +pub fn unlinkat<P: ?Sized + NixPath>( + dirfd: Option<RawFd>, + path: &P, + flag: UnlinkatFlags, +) -> Result<()> { + let atflag = + match flag { + UnlinkatFlags::RemoveDir => AtFlags::AT_REMOVEDIR, + UnlinkatFlags::NoRemoveDir => AtFlags::empty(), + }; + let res = path.with_nix_path(|cstr| { + unsafe { + libc::unlinkat(at_rawfd(dirfd), cstr.as_ptr(), atflag.bits() as libc::c_int) + } + })?; + Errno::result(res).map(drop) +} + + #[inline] pub fn chroot<P: ?Sized + NixPath>(path: &P) -> Result<()> { let res = path.with_nix_path(|cstr| { |