diff options
Diffstat (limited to 'src/unistd.rs')
-rw-r--r-- | src/unistd.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/unistd.rs b/src/unistd.rs index d3915dcc..70a06b02 100644 --- a/src/unistd.rs +++ b/src/unistd.rs @@ -2900,6 +2900,27 @@ pub fn access<P: ?Sized + NixPath>(path: &P, amode: AccessFlags) -> Result<()> { })?; Errno::result(res).map(drop) } + +/// Checks the file named by `path` for accessibility according to the flags given by `mode` +/// +/// If `dirfd` has a value, then `path` is relative to directory associated with the file descriptor. +/// +/// If `dirfd` is `None`, then `path` is relative to the current working directory. +/// +/// # References +/// +/// [faccessat(2)](http://pubs.opengroup.org/onlinepubs/9699919799/functions/faccessat.html) +// illumos: faccessat(2) appears to be supported, but the libc crate does not provide a binding. +// redox: does not appear to support the *at family of syscalls. +#[cfg(not(any(target_os = "illumos", target_os = "redox")))] +pub fn faccessat<P: ?Sized + NixPath>(dirfd: Option<RawFd>, path: &P, mode: AccessFlags, flags: AtFlags) -> Result<()> { + let res = path.with_nix_path(|cstr| { + unsafe { + libc::faccessat(at_rawfd(dirfd), cstr.as_ptr(), mode.bits(), flags.bits()) + } + })?; + Errno::result(res).map(drop) +} } feature! { |