[PATCH v2 0/4] kexec/arm64: Add support for zlib compressed kernel images (Image.gz)
bhsharma at redhat.com
Sun Jul 14 23:02:52 PDT 2019
Changes since v1:
(v1 can be viewed here: http://lists.infradead.org/pipermail/kexec/2019-July/023288.html)
- Fixed the potential file descriptor leakage code legs pointed out by
- Ran Valgrind to make sure no potential memory leakage issues are
introduced by this patchset.
This patchset adds the support for zlib compressed kernel images
(Image.gz) for arm64 kexec-tools.
This was discussed a bit with the arm64 kernel maintainers (see ) and
after discussing the pros and cons of adding this support in
kernel-space v/s in user-space, we decided it makes more sense to add
this support to the user-space kexec-tools.
Note that this series adds support for unsigned arm64 Image.gz files
only as signing an Image.gz type file is not a easy implementation from
kexec-tools p-o-v. Also even standard signing tools like sbsign fail to
recongize the Image.gz format:
$ sbsign --key certs/signing_key.pem --cert certs/signing_key.pem Image.gz
Invalid DOS header magic
... because that gzip file isn't a PE32+ that can be loaded by UEFI.
So I will work on the same in coming days and try to send a RFC
patchset for the same later on.
Bhupesh Sharma (4):
kexec/kexec.c: Add the missing close() for fd used for
kexec-uImage-arm64.c: Fix return value of uImage_arm64_probe()
kexec/kexec-zlib.h: Add 'is_zlib_file()' helper function
kexec/arm64: Add support for handling zlib compressed (Image.gz) image
kexec/arch/arm64/Makefile | 3 +-
kexec/arch/arm64/kexec-arm64.c | 1 +
kexec/arch/arm64/kexec-arm64.h | 7 ++
kexec/arch/arm64/kexec-image-arm64.c | 4 +-
kexec/arch/arm64/kexec-uImage-arm64.c | 13 +-
kexec/arch/arm64/kexec-zImage-arm64.c | 226 ++++++++++++++++++++++++++++++++++
kexec/kexec-zlib.h | 1 +
kexec/kexec.c | 14 +++
kexec/zlib.c | 38 ++++++
9 files changed, 303 insertions(+), 4 deletions(-)
create mode 100644 kexec/arch/arm64/kexec-zImage-arm64.c
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