[−][src]Trait openat_ext::OpenatDirExt

pub trait OpenatDirExt {
    fn open_file_optional<P: AsPath>(&self, p: P) -> Result<Option<File>>;

    fn sub_dir_optional<P: AsPath>(&self, p: P) -> Result<Option<Dir>>;

    fn get_file_type(&self, e: &Entry) -> Result<SimpleType>;

    fn exists<P: AsPath>(&self, p: P) -> Result<bool>;

    fn ensure_dir<P: AsPath>(&self, p: P, mode: mode_t) -> Result<()>;
}

Helper functions for openat::Dir

Required methods

fn open_file_optional<P: AsPath>(&self, p: P) -> Result<Option<File>>

Checking for nonexistent files (ENOENT) is by far the most common case of inspecting error codes in Unix. Rust has a nice Option<> type, so this helper makes use of it and returns Ok(None) for nonexistent files. All other errors are Err, and extant files are Ok(Some<file>)) of course.

fn sub_dir_optional<P: AsPath>(&self, p: P) -> Result<Option<Dir>>

Like open_file_optional() except opens a directory via openat::dir::sub_dir.

fn get_file_type(&self, e: &Entry) -> Result<SimpleType>

On modern filesystems the directory entry contains the type; if available, return it. Otherwise invoke stat().

fn exists<P: AsPath>(&self, p: P) -> Result<bool>

Returns true iff file exists (may be a directory or symlink). Symbolic links are not followed.

fn ensure_dir<P: AsPath>(&self, p: P, mode: mode_t) -> Result<()>

Create a directory but don't error if it already exists.

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Implementations on Foreign Types

impl OpenatDirExt for Dir[src]

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Implementors

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