The routine clipboard_get_files() parses a potentially long string,
and copies portions of it into a temporary buffer. This buffer is then
passed to clipboard_get_file() as pointer + length;
The buffer is inadequately sized for very long filenames which may
approach XFS_MAXFILENAMELEN in length. This can cause chansrv to fail
when the user copies such filenames.
It turns out the buffer is unnecessary, as the filenames can be
passed directly into clipboard_get_file() from the source string,
using pointer + length. This avoids the length limitation entirely.
34b5582460