Function esp_idf_hal::sys::esp_vfs_pread

source ยท 
pub unsafe extern "C" fn esp_vfs_pread(
    fd: i32,
    dst: *mut c_void,
    size: usize,
    offset: i32,
) -> isize
Expand description

@brief Implements the VFS layer of POSIX pread()

@param fd File descriptor used for read @param dst Pointer to the buffer where the output will be written @param size Number of bytes to be read @param offset Starting offset of the read

@return A positive return value indicates the number of bytes read. -1 is return on failure and errno is set accordingly.