These patches add support for modifying the reserved space for extra
certificates in a compressed bzImage in x86. This allows separating the
system keyring certificate from the kernel build process. After the kernel
image is distributed, the insert-sys-cert script can be used to insert the
certificate for x86.
(Sorry for the previous cover I sent without the subject line.)
Changes:
v3:
* Rewrote 1/4 to insert incompressible bytes are at build time. Previous
solution required changes to <arch>/boot/Makefile's for modifying the
vmlinux file after linking, and did not work well with cross compilation.
* Added 2/4 for ELF class-independent processing of vmlinux file, in case the
script was compiled for 64-bit and the kernel was compiled for 32-bit.
* Reordered 3/4, added x86 bzImage boot version (>=2.08) verification.
v2:
* Rebased arch/boot/x86/Makefile patch (removed in v3)
Mehmet Kayaalp (4):
KEYS: Insert incompressible bytes to reserve space in bzImage
KEYS: Add ELF class-independent certificate insertion support
KEYS: Support for inserting a certificate into x86 bzImage
KEYS: Print insert-sys-cert information to stdout instead of stderr
certs/Makefile | 21 +-
certs/system_certificates.S | 2 +-
scripts/Makefile | 1 +
scripts/insert-sys-cert.c | 455 +++++++++++++++++++++++++++++++++-----------
4 files changed, 362 insertions(+), 117 deletions(-)
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2.7.4