Function getdents_asm 

pub unsafe fn getdents_asm<T>(
    fd: i32,
    buffer_ptr: *mut T,
    buffer_size: usize,
) -> i64
where
    T: ValueType,

Libc-based fallback for reading directory entries

Arguments

• fd: Open directory file descriptor
• buffer_ptr: Raw pointer to output buffer
• buffer_size: Size of output buffer in bytes

Safety

• Requires valid open directory descriptor
• Buffer must be valid for writes of buffer_size bytes
• No type checking on generic pointer(T must be i8/u8)

Returns

• Positive: Number of bytes read
• 0: End of directory
• Negative: Error code (check errno)