If only one file is passed, this reads the terminating NULL and so
prints (null). If multiple files are passed then this always prints the
second file, which may or may not exist (and will be particularly
confusing if it does exist since the output will include the dump of the
second file).
MFC after: 1 week
This can be used to check existing images but will be used in the future to
find EFI ESP images placed in El Torito catalogs so they can be used for
hybrid boot purposes.
Reviewed by: imp (code), sbruno (man page), bcr (man page)
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D14952
