Function gather_from_iovecs

block/src/qcow_common.rs:288–293

Gather bytes from iovecs starting at the given byte offset into a Vec. # Safety Caller must ensure iovecs point to valid, readable memory of sufficient size.

(iovecs: &[libc::iovec], start: usize, len: usize)

/// # Safety
/// Caller must ensure iovecs point to valid, readable memory of sufficient size.
pub unsafe fn gather_from_iovecs(iovecs: &[libc::iovec], start: usize, len: usize) -> Vec<u8> {
    let mut result = vec![0u8; len];
    // SAFETY: caller guarantees iovecs are valid; result has len bytes.
    unsafe { gather_from_iovecs_into(iovecs, start, &mut result) };
    result
}

#[cfg(test)]
pub(crate) mod unit_tests {