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Not all images are allocated via alloc_image(). For example: embedded images, the static images created to hold a runtime command line, and the images used by unit tests are all static structures. Using image_set_cmdline() (via e.g. the "imgargs" command) to set the command-line arguments of a static image will succeed but will leak memory, since nothing will ever free the allocated command line. There are no code paths that can lead to calling image_set_len() on a static image, but there is no safety check against future code paths attempting this. Define a flag IMAGE_STATIC to mark an image as statically allocated, generalise free_image() to also handle freeing dynamically allocated portions of static images (such as the command line), and expose free_image() for use by static images. Define a related flag IMAGE_STATIC_NAME to mark the name as statically allocated. Allow a statically allocated name to be replaced with a dynamically allocated name since this is a potentially valid use case (e.g. if "imgdecrypt --name <name>" is used on an embedded image). Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE README File Quick start guide: cd src make For any more detailed instructions, see http://ipxe.org