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Gary Ching-Pang Lin e65370d770 Reallocate the DevPath space for the volume label 
The size of the DevPath string array was not sufficient to append
the volume label. This patch extends the size for the label and
re-enables the menu freeing.
2012-10-12 20:09:33 -04:00
Cryptlib Remove temp file checked in by accident 2012-07-09 10:38:30 -04:00
cert.S Fix data alignment on vendor_cert so we don't wind up with padding. 2012-09-06 16:43:30 -04:00
COPYRIGHT Add copyright file 2012-07-09 11:03:12 -04:00
Makefile Build debug image for all efi files 2012-09-26 15:46:42 +08:00
MokManager.c Reallocate the DevPath space for the volume label 2012-10-12 20:09:33 -04:00
PeImage.h dos2unix PeImage.h 2012-09-06 12:01:43 -04:00
README Add basic documentation 2012-07-28 00:42:43 -04:00
shim.c Remove LoadImage/StartImage support 2012-10-12 19:55:20 -04:00
shim.h Switch to using db format for MokList and MokNew 2012-10-12 19:55:20 -04:00
signature.h Switch to using db format for MokList and MokNew 2012-10-12 19:55:20 -04:00
TODO Update TODO 2012-07-09 10:39:14 -04:00

README 

shim is a trivial EFI application that, when run, attempts to open and
execute another application. It will initially attempt to do this via the
standard EFI LoadImage() and StartImage() calls. If these fail (because secure
boot is enabled and the binary is not signed with an appropriate key, for
instance) it will then validate the binary against a built-in certificate. If
this succeeds and if the binary or signing key are not blacklisted then shim
will relocate and execute the binary.

shim will also install a protocol which permits the second-stage bootloader
to perform similar binary validation. This protocol has a GUID as described
in the shim.h header file and provides a single entry point. On 64-bit systems
this entry point expects to be called with SysV ABI rather than MSABI, and
so calls to it should not be wrapped.

To use shim, simply place a hex dump of the public certificate in cert.h
and build it with make.