Function canonicalize 

pub fn canonicalize(
    fs: &Fs,
    pid: u32,
    guest: &[u8],
    deref_final: bool,
) -> Result<Vec<u8>, i32>

Canonicalizes an absolute guest path inside the guest namespace.

Unlike resolve, a path whose intermediate component is missing stays lexical from there on, as the binding table needs it.

Arguments

• fs - Guest filesystem view.
• pid - Tracee thread id the path belongs to (for /proc/self).
• guest - Absolute guest path, may contain ./../double slashes.
• deref_final - Follow a symlink in the last component.

Returns

The canonical absolute guest path (no ./../symlinks in the walked part).

Errors

As resolve, except for a missing intermediate component.