diff options
| -rw-r--r-- | library/std/src/fs.rs | 19 | ||||
| -rw-r--r-- | library/std/src/sys/fs/mod.rs | 15 |
2 files changed, 34 insertions, 0 deletions
diff --git a/library/std/src/fs.rs b/library/std/src/fs.rs index 865ea620a28..3da4b0ff855 100644 --- a/library/std/src/fs.rs +++ b/library/std/src/fs.rs @@ -3128,6 +3128,25 @@ pub fn set_permissions<P: AsRef<Path>>(path: P, perm: Permissions) -> io::Result fs_imp::set_permissions(path.as_ref(), perm.0) } +/// Set the permissions of a file, unless it is a symlink. +/// +/// Note that the non-final path elements are allowed to be symlinks. +/// +/// # Platform-specific behavior +/// +/// Currently unimplemented on Windows. +/// +/// On Unix platforms, this results in a [`FilesystemLoop`] error if the last element is a symlink. +/// +/// This behavior may change in the future. +/// +/// [`FilesystemLoop`]: crate::io::ErrorKind::FilesystemLoop +#[doc(alias = "chmod", alias = "SetFileAttributes")] +#[unstable(feature = "set_permissions_nofollow", issue = "141607")] +pub fn set_permissions_nofollow<P: AsRef<Path>>(path: P, perm: Permissions) -> io::Result<()> { + fs_imp::set_permissions_nofollow(path.as_ref(), perm) +} + impl DirBuilder { /// Creates a new set of options with default mode/security settings for all /// platforms and also non-recursive. diff --git a/library/std/src/sys/fs/mod.rs b/library/std/src/sys/fs/mod.rs index d55e28074fe..d7f98c86e6e 100644 --- a/library/std/src/sys/fs/mod.rs +++ b/library/std/src/sys/fs/mod.rs @@ -108,6 +108,21 @@ pub fn set_permissions(path: &Path, perm: FilePermissions) -> io::Result<()> { with_native_path(path, &|path| imp::set_perm(path, perm.clone())) } +#[cfg(unix)] +pub fn set_permissions_nofollow(path: &Path, perm: crate::fs::Permissions) -> io::Result<()> { + use crate::fs::OpenOptions; + use crate::os::unix::fs::OpenOptionsExt; + + OpenOptions::new().custom_flags(libc::O_NOFOLLOW).open(path)?.set_permissions(perm) +} + +#[cfg(not(unix))] +pub fn set_permissions_nofollow(_path: &Path, _perm: crate::fs::Permissions) -> io::Result<()> { + crate::unimplemented!( + "`set_permissions_nofollow` is currently only implemented on Unix platforms" + ) +} + pub fn canonicalize(path: &Path) -> io::Result<PathBuf> { with_native_path(path, &imp::canonicalize) } |