Struct vfs_dir_ops

#[repr(C)]
pub struct vfs_dir_ops {
    pub opendir: Option<unsafe extern "C" fn(dirp: *mut vfs_DIR, dirname: *const c_char) -> c_int>,
    pub readdir: Option<unsafe extern "C" fn(dirp: *mut vfs_DIR, entry: *mut vfs_dirent_t) -> c_int>,
    pub closedir: Option<unsafe extern "C" fn(dirp: *mut vfs_DIR) -> c_int>,
}

@brief Operations on open directories

Fields

opendir: Option<unsafe extern "C" fn(dirp: *mut vfs_DIR, dirname: *const c_char) -> c_int>

@brief Open a directory for reading with readdir

@param[in] dirp pointer to open directory @param[in] name null-terminated name of the dir to open, relative to the file system root, including a leading slash

@return 0 on success @return <0 on error

readdir: Option<unsafe extern "C" fn(dirp: *mut vfs_DIR, entry: *mut vfs_dirent_t) -> c_int>

@brief Read a single entry from the open directory dirp and advance the read position by one

@p entry will be populated with information about the next entry in the directory stream @p dirp

If @p entry was updated successfully, @c readdir shall return 1.

If the end of stream was reached, @c readdir shall return 0 and @p entry shall remain untouched.

@param[in] dirp pointer to open directory @param[out] entry directory entry information

@return 1 if @p entry was updated @return 0 if @p dirp has reached the end of the directory index @return <0 on error

closedir: Option<unsafe extern "C" fn(dirp: *mut vfs_DIR) -> c_int>

@brief Close an open directory

@param[in] dirp pointer to open directory

@return 0 on success @return <0 on error, the directory stream dirp should be considered invalid

Trait Implementations

impl Clone for vfs_dir_ops

fn clone(&self) -> vfs_dir_ops

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for vfs_dir_ops

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for vfs_dir_ops

fn default() -> vfs_dir_ops

Returns the “default value” for a type.

impl Copy for vfs_dir_ops

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 12 bytes