From 83201bacbed8df36324b56c7c859a00132704c3a Mon Sep 17 00:00:00 2001
From: Rolf Neugebauer <rolf.neugebauer@docker.com>
Date: Sun, 30 Apr 2017 11:32:04 +0100
Subject: [PATCH] kernels: Add script to convert Fedora kernels

We only convert kernels from Fedora 2* as they have 4.x kernels.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
---
 scripts/kernels/Dockerfile.rpm |  7 +++--
 scripts/kernels/fedora.sh      | 55 ++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+), 3 deletions(-)
 create mode 100755 scripts/kernels/fedora.sh

diff --git a/scripts/kernels/Dockerfile.rpm b/scripts/kernels/Dockerfile.rpm
index b2512e276..343aad7f1 100644
--- a/scripts/kernels/Dockerfile.rpm
+++ b/scripts/kernels/Dockerfile.rpm
@@ -14,9 +14,10 @@ RUN for url in ${RPM_URLS}; do \
 RUN for d in lib/modules/*; do depmod -b . $(basename $d); done
 
 RUN mkdir /out
-RUN cp -a boot/vmlinuz-* /out/kernel
-RUN cp -a boot/config-* /out/kernel_config
-RUN cp -a boot/System.map-* /out/System.map
+# With some fedora rpms, the kernel and system map are in modules directory
+RUN cp -a boot/vmlinuz-* /out/kernel || mv lib/modules/*/vmlinuz /out/kernel
+RUN cp -a boot/config-* /out/kernel_config || mv lib/modules/*/config /out/kernel_config
+RUN cp -a boot/System.map-* /out/System.map || mv lib/modules/*/System.map /out/System.map
 RUN tar cf /out/kernel.tar lib
 RUN tar cf /out/kernel-dev.tar usr || true
 
diff --git a/scripts/kernels/fedora.sh b/scripts/kernels/fedora.sh
new file mode 100755
index 000000000..74fe3e5e9
--- /dev/null
+++ b/scripts/kernels/fedora.sh
@@ -0,0 +1,55 @@
+#! /bin/sh
+
+REPO="linuxkit/kernel-fedora"
+BASE_URL=http://mirrors.kernel.org/fedora/
+
+TAGS=$(curl --silent -f -lSL https://registry.hub.docker.com/v1/repositories/${REPO}/tags)
+
+LINKS=$(curl -s ${BASE_URL}/releases/ | sed -n 's/.*href="\([^"]*\).*/\1/p')
+# Just get releases 20+
+RELEASES=$(echo $LINKS | grep -o "2[0-9]")
+
+ARCH=x86_64
+URLS=""
+for RELEASE in $RELEASES; do
+    URLS="$URLS ${BASE_URL}/releases/${RELEASE}/Everything/${ARCH}/os/Packages/k/"
+    URLS="$URLS ${BASE_URL}/updates/${RELEASE}/${ARCH}/k/"
+done
+
+for URL in $URLS; do
+    PACKAGES=$(curl -s ${URL}/ | sed -n 's/.*href="\([^"]*\).*/\1/p')
+
+    KERNEL_RPMS=$(echo $PACKAGES | \
+        grep -o "kernel-[0-9]\+\.[0-9]\+\.[0-9]\+-[0-9]\+\.[^ ]\+\.rpm")
+    for KERNEL_RPM in $KERNEL_RPMS; do
+        RPM_URLS="${URL}/${KERNEL_RPM}"
+
+        VERSION=$(echo $KERNEL_RPM | \
+                      grep -o "[0-9]\+\.[0-9]\+\.[0-9]\+-[0-9\.]\+\.fc[0-9]\+")
+
+        if echo $TAGS | grep -q "\"${VERSION}\""; then
+            echo "${REPO}:${VERSION} exists"
+            continue
+        fi
+
+        CORE_RPM="kernel-core-${VERSION}.${ARCH}.rpm"
+        RPM_URLS="${RPM_URLS} ${URL}/${CORE_RPM}"
+
+        MOD_RPM="kernel-modules-${VERSION}.${ARCH}.rpm"
+        RPM_URLS="${RPM_URLS} ${URL}/${MOD_RPM}"
+
+        MOD_EXTRA_RPM="kernel-modules-extra-${VERSION}.${ARCH}.rpm"
+        RPM_URLS="${RPM_URLS} ${URL}/${MOD_EXTRA_RPM}"
+
+        # Don't pull in the headers. This is mostly for testing
+        # HEADERS_RPM="kernel-headers-${VERSION}.x86_64.rpm"
+        # RPM_URLS="${RPM_URLS} ${URL}/${HEADERS_RPM}"
+
+        docker build -t ${REPO}:${VERSION} -f Dockerfile.rpm --no-cache \
+               --build-arg RPM_URLS="${RPM_URLS}" . &&
+            DOCKER_CONTENT_TRUST=1 docker push ${REPO}:${VERSION}
+
+        docker rmi ${REPO}:${VERSION}
+        docker system prune -f
+    done
+done