kernel: fix script #3

.scripts/linux/kernel_build.sh

@@ -1,43 +1,57 @@
 #!/usr/bin/env bash
-set -e
+set -eux
 TMPDIR="$(mktemp)"
 
 echo "cloning AMD SNP kernel in tmp directory ${TMPDIR}"
-cd "${TMPDIR}" &&
-  git clone \
-    https://github.com/confidential-containers/linux \
-    --single-branch \
-    -b amd-snp-host-202402240000 &&
-  cd linux
+(
+  cd "${TMPDIR}" &&
+    git clone \
+      https://github.com/confidential-containers/linux \
+      --single-branch \
+      -b amd-snp-host-202402240000 &&
+    cd linux
+) >/dev/null 2>&1
 
 VER="-snp-host"
 DATE="$(date +%Y-%m-%d-%H-%M)"
 
-echo "building and installing kernel... this will take while" &&
-  echo "Copying current config to new kernel" &&
-  cp /boot/config-$(uname -r) .config &&
-  echo "Patching new kernel" &&
+echo "building and installing kernel... this will take while"
+echo "Copying current config to new kernel"
+(
+  cp /boot/config-$(uname -r) .config
+) >/dev/null 2>&1
+
+echo "Patching new kernel"
+(
   ./scripts/config --set-str LOCALVERSION "$VER-$DATE" &&
-  ./scripts/config --disable LOCALVERSION_AUTO &&
-  ./scripts/config --enable DEBUG_INFO &&
-  ./scripts/config --enable DEBUG_INFO_REDUCED &&
-  ./scripts/config --enable EXPERT &&
-  ./scripts/config --enable AMD_MEM_ENCRYPT &&
-  ./scripts/config --disable AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT &&
-  ./scripts/config --enable KVM_AMD_SEV &&
-  ./scripts/config --module CRYPTO_DEV_CCP_DD &&
-  ./scripts/config --disable SYSTEM_TRUSTED_KEYS &&
-  ./scripts/config --disable SYSTEM_REVOCATION_KEYS &&
-  ./scripts/config --module SEV_GUEST &&
-  ./scripts/config --disable IOMMU_DEFAULT_PASSTHROUGH &&
-  echo "Building new kernel" &&
+    ./scripts/config --disable LOCALVERSION_AUTO &&
+    ./scripts/config --enable DEBUG_INFO &&
+    ./scripts/config --enable DEBUG_INFO_REDUCED &&
+    ./scripts/config --enable EXPERT &&
+    ./scripts/config --enable AMD_MEM_ENCRYPT &&
+    ./scripts/config --disable AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT &&
+    ./scripts/config --enable KVM_AMD_SEV &&
+    ./scripts/config --module CRYPTO_DEV_CCP_DD &&
+    ./scripts/config --disable SYSTEM_TRUSTED_KEYS &&
+    ./scripts/config --disable SYSTEM_REVOCATION_KEYS &&
+    ./scripts/config --module SEV_GUEST &&
+    ./scripts/config --disable IOMMU_DEFAULT_PASSTHROUGH
+) >/dev/null 2>&1
+
+echo "Building new kernel"
+(
   yes "" | make olddefconfig &&
-  make -j$(nproc) LOCAL_VERSION="$VER-$DATE" &&
-  make -j$(nproc) modules_install &&
-  make -j$(nproc) install &&
-  echo "Kernel Built, configuring and updating GRUB" &&
+    make -j$(nproc) LOCAL_VERSION="$VER-$DATE" &&
+    make -j$(nproc) modules_install &&
+    make -j$(nproc) install
+) >/dev/null 2>&1
+
+echo "Kernel Built, configuring and updating GRUB"
+(
   sed -i 's/iommu=pt/iommu=nopt/g' /etc/default/grub &&
-  update-grub &&
-  rm -rf "${TMPDIR}" &&
-  echo "cleaning kernel tmp directory ${TMPDIR}" &&
-  echo "Work completed. You should now reboot."
+    update-grub &&
+    rm -rf "${TMPDIR}"
+) >/dev/null 2>&1
+
+echo "cleaning kernel tmp directory ${TMPDIR}"
+echo "Work completed. You should now reboot."