Struct riot_sys::vfs_dir_ops
source · #[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>,
}
Expand description
@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§
source§impl Clone for vfs_dir_ops
impl Clone for vfs_dir_ops
source§fn clone(&self) -> vfs_dir_ops
fn clone(&self) -> vfs_dir_ops
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
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