kernelseeds

#!/usr/bin/env bash

NAME="Kernel Seeds"
CODENAME="kernelseeds"
COPYRIGHT="Copyright (C) 2013 Nathan Shearer"
LICENSE="GNU General Public License 2.0"
VERSION="4.0.1.0"

# The kernel config has menu options which hide or unhide additional options
# The menuconfig options do not add any code to the kernel
# Disabled menuconfig options prevents compilation of subsidiary modules
# This function searches for and enables all menuconfig options
# $1 The kernel source path
function kernelseeds_enable_all_menuconfig
{
	local KERNEL_SOURCE_PATH="$1"
	for OPTION in $(find "$KERNEL_SOURCE_PATH" -name Kconfig -exec grep menuconfig {} \; | sed -e 's/menuconfig //'); do
		# attempt =m first then attempt =y
		if ! kernelseeds_option_is_set .config "CONFIG_$OPTION"; then
			kernelseeds_set_option "$KERNEL_SOURCE_PATH" "CONFIG_$OPTION" m
		fi
		if ! kernelseeds_option_is_set .config "CONFIG_$OPTION"; then
			kernelseeds_set_option "$KERNEL_SOURCE_PATH" "CONFIG_$OPTION" y
		fi
	done
}

# Enable all modules
# $1 The kernel source path
function kernelseeds_enable_all_modules
{
	local KERNEL_SOURCE_PATH="$1"
	
	rm -rf "$TMP/kernelsource-allmodconfig"
	cp -a "$KERNEL_SOURCE_PATH" "$TMP/kernelsource-allmodconfig"
	kernelseeds_quiet make -C "$TMP/kernelsource-allmodconfig" clean mrproper
	kernelseeds_quiet make -C "$TMP/kernelsource-allmodconfig" allmodconfig
	grep -E '^[^#].+=m$' "$TMP/kernelsource-allmodconfig/.config" > "$TMP/allmod.config"
	rm -rf "$TMP/kernelsource-allmodconfig"
	
	kernelseeds_set_options "$KERNEL_SOURCE_PATH" "$TMP/allmod.config"
}

# \brief Generate a default config if .config does not exist
# $1 The kernel source path
function kernelseeds_defconfig
{
	if [ ! -f "$1/.config" ]; then
		echo -n "An existing config was not found at \"$1/.config\". Generating a new default config..."
		#pushd "$1" > /dev/null
		kernelseeds_quiet make -C "$1" defconfig
		#popd > /dev/null
		echo " done."
	fi
}

# \brief Set a kernel option
# $1 The kernel source path
# $2 The kernel option
# $3 y|m The kernel option value
# $4 true|false Replace existing values with the new value if the option is already set. Default is false.
# $5 true|false Allow overrides during "make olddefconfig". Default is false.
function kernelseeds_set_option
{
	local KERNEL_SOURCE_PATH="$1"
	local OPTION="$2"
	local VALUE="$3"
	local OPTION_VALUE="${OPTION}=$VALUE"
	local ALLOW_REPLACE="$4"; if [ "$ALLOW_REPLACE" = "" ]; then ALLOW_REPLACE=false; fi
	local ALLOW_OVERRIDE="$5"; if [ "$ALLOW_OVERRIDE" = "" ]; then ALLOW_OVERRIDE=false; fi

	kernelseeds_defconfig "$KERNEL_SOURCE_PATH"

	if kernelseeds_option_is_set "$KERNEL_SOURCE_PATH/.config" "$OPTION"; then
		if kernelseeds_option_is_set "$KERNEL_SOURCE_PATH/.config" "$OPTION" "$VALUE"; then
			echo "$OPTION_VALUE is already set"
			return
		fi
		if $ALLOW_REPLACE; then
			if [ ! -d "$TMP/kernelsource" ]; then
				cp -a "$KERNEL_SOURCE_PATH" "$TMP/kernelsource"
			fi
			sed -i -r "s/^$OPTION=.*$/$OPTION_VALUE/" "$TMP/kernelsource/.config"
		fi
	else
		if [ ! -d "$TMP/kernelsource" ]; then
			cp -a "$KERNEL_SOURCE_PATH" "$TMP/kernelsource"
		fi
		sed -i -r "s/^# $OPTION is not set$/$OPTION_VALUE/" "$TMP/kernelsource/.config"
	fi
	make -C "$TMP/kernelsource" olddefconfig > "$TMP/kernelseeds-make-olddefconfig" 2>&1

	if [ $? -ne 0 ]; then
		echo "$OPTION_VALUE skipped due to error during \"make olddefconfig\""
		rm -rf "$TMP/kernelsource"
		return 1
	fi
	if ! $ALLOW_OVERRIDE && grep -q override "$TMP/kernelseeds-make-olddefconfig"; then
		echo "$OPTION_VALUE skipped due to override during \"make olddefconfig\""
		rm -rf "$TMP/kernelsource"
		return 2
	fi
	if $TEST && ! kernelseeds_quiet make -C "$TMP/kernelsource" -j "$THREADS"; then
		echo "$OPTION_VALUE skipped due to error during kernel build test"
		rm -rf "$TMP/kernelsource"
		return 3
	fi
	if kernelseeds_option_is_set "$TMP/kernelsource/.config" "$OPTION" "$VALUE"; then
		echo "$OPTION_VALUE"
	elif [ "$VALUE" = "n" ]; then
		# special case where =n will remove the option rather than leaving CONFIG_OPTION=n in the .config file, so it actually was set
		echo "$OPTION_VALUE"
	else
		echo "$OPTION_VALUE was set but then later reverted by \"make olddefconfig\""
		return 4
	fi

	cp -f "$TMP/kernelsource/.config" "$KERNEL_SOURCE_PATH/.config"
}

# \brief Set all options from $2
# $1 The kernel source path
# $2 The seed config file
# $3 true|false Replace existing values with the new value if the option is already set. Default is false.
# $4 true|false Allow overrides during "make olddefconfig". Default is false.
function kernelseeds_set_options
{
	local KERNEL_SOURCE_PATH="$1"
	local SEED_CONFIG="$2"
	local ALLOW_REPLACE="$3"; if [ "$ALLOW_REPLACE" = "" ]; then ALLOW_REPLACE=false; fi
	local ALLOW_OVERRIDE="$4"; if [ "$ALLOW_OVERRIDE" = "" ]; then ALLOW_OVERRIDE=false; fi
	
	for OPTION_VALUE in $(grep -E "^CONFIG.*=[my]$" "$SEED_CONFIG"); do
		local OPTION=$(printf "$OPTION_VALUE" | sed -r 's/^(.*)=[my]/\1/')
		local VALUE=$(printf "$OPTION_VALUE" | sed -r 's/^.*=([my])/\1/')
		kernelseeds_set_option "$KERNEL_SOURCE_PATH" "$OPTION" "$VALUE" "$ALLOW_REPLACE" "$ALLOW_OVERRIDE"
	done
}

function kernelseeds_help
{
	#     01234567890123456789012345678901234567890123456789012345678901234567890123456789
	echo "Description:"
	echo "  Apply a set of kernel options to a new or existing kernel configuration."
	echo
	echo "Usage:"
	echo "  kernelseeds [options]"
	echo
	echo "Options:"
	echo "  -a, --architecture x86"
	echo "    Change ARCH when configuring the kernel."
	echo "    Possible architectures are defined at kernel-source/arch/*:"
	echo "  --enable-all-menuconfig"
	echo "    Enable all menu options which unhide additional options."
	echo "  --enable-all-modules"
	echo "    Enable all modules. Overrides are disabled by default."
	echo "  --set-active-yes"
	echo "    Scan this system and set active kernel options to yes."
	echo "  --set-common"
	echo "    Set common options."
	echo "  --set-options seed.config"
	echo "    Set all options from seed.config. Overrides are disabled by default."
	echo "  --set-raspberry-pi-2"
	echo "    Set options for Raspberry Pi 2 support."
	echo "  -h, --help"
	echo "    Display this help message and exit."
	echo "  --override-enable"
	echo "    Set options that would override existing options. Disabled by default."
	echo "  --override-disable"
	echo "    Do not override existing options. Disabled by default."
	echo "  --test-enable"
	echo "    Enable kernel build testing for every changed kernel option."
	echo "  --test-disable"
	echo "    Disable kernel build testing for every changed kernel option."
	echo "  --tmpfs"
	echo "    Use tmpfs to improve performance."
	echo
	echo "Example: Enable all possible modules:"
	echo "  # cd /usr/src/linux"
	echo "  # kernelseeds --enable-all-menuconfig --enable-all-modules"
	echo "  # make && make modules_install"
	echo
	echo "Example: Enable all possible modules with an existing distribution kernel:"
	echo "  # cd /usr/src/linux"
	echo "  # modprobe configs"
	echo "  # gzip -c -d /proc/config.gz > .config"
	echo "  # kernelseeds --enable-all-menuconfig --enable-all-modules"
	echo "  # make && make modules_install"
	echo
	echo "Example: Scan this system and set active drivers and modules to builtin:"
	echo "  # cd /usr/src/linux"
	echo "  # kernelseeds --override-enable --set-active-yes"
	echo "  # make && make modules_install"
	echo
	echo "Version:"
	echo "  $NAME $VERSION"
	echo "  $COPYRIGHT"
	echo "  Licensed under $LICENSE"
}

# \brief Return true if a kernel option is set
# $1 The kernel .config file
# $2 The kernel option
# $3 The kernel option value (only return true if this optional value is matched)
function kernelseeds_option_is_set
{
	if [ "$3" = "" ]; then
		grep -E -q "^$2=.*$" "$1"
		return $?
	else
		grep -E -q "^$2=$3$" "$1"
		return $?
	fi
}

# \brief Run a command and only show output if an error occurs
# \param $@ The command and its arguments
function kernelseeds_quiet
{
	local RANDOM64=$(( $RANDOM * $RANDOM * $RANDOM * $RANDOM ))
	"$@" >>/tmp/.quiet.$RANDOM64 2>/tmp/.quiet.$RANDOM64
	local STATUS="$?"
	if [ "$STATUS" -ne 0 ]; then
		cat /tmp/.quiet.$RANDOM64
	fi
	rm -f /tmp/.quiet.$RANDOM64
	return "$STATUS"
}

# \brief Scan the running kernel and set active options to yes.
# $1 The kernel source path
function kernelseeds_set_active_yes
{
	local KERNEL_SOURCE_PATH="$1"
	
	kernelseeds_defconfig "$KERNEL_SOURCE_PATH"
	
	LSMOD_MODULES=$(cut -d ' ' -f 1 /proc/modules | sort | uniq) # this works, but "kvm" matches too many CONFIG_ options
	LSPCI_DRIVERS=$(lspci -v | grep "Kernel driver" | sed -r -e 's/.*: (.*)/\1/' | sort | uniq)
	LSPCI_MODULES=$(lspci -v | grep "Kernel modules" | sed -r -e 's/.*: (.*)/\1/' | sed -r -e 's/, /\n/g' | sort | uniq)
	# some modules use '-' and some use '_' in the name, so convert - to _
	ALL=$(for S in $LSMOD_MODULES $LSPCI_DRIVERS $LSPCI_MODULES; do printf "$S\n"; done | tr - _ | sort | uniq)
	
	local OPTIONS=""
	for S in $ALL; do
		# some modules use '-' and some use '_' in the name, so search for both
		SS=$(printf "$S" | sed -r -e 's/[-_]/[-_]/g')
		# search all Makefile files for matching .o then output only the CONFIG_ string
		OPTION=$(find "$KERNEL_SOURCE_PATH" -name Makefile -exec grep -e "^obj.* $SS\\.o" '{}' \; | grep -E -o 'CONFIG_[A-Z0-9_]+')
		if [ "$OPTION" = "" ]; then
			printf "error: no kernel options found for \"$S\"\n" > /dev/stderr
			continue
		fi
		if [ $(printf "$OPTION\n" | sort | uniq | tr -s '\n' | wc -l) -ne 1 ]; then
			printf "error: more than one kernel option was found for \"$S\": " > /dev/stderr
			printf "$OPTION" | sort | uniq | tr -s '\n' ' ' > /dev/stderr
			printf '\n'
			continue
		fi
		OPTIONS="$OPTIONS\n$OPTION"
	done
	OPTIONS=$(printf "$OPTIONS" | sort | uniq)
	for S in $OPTIONS; do
		kernelseeds_set_option "$KERNEL_SOURCE_PATH" "$S" y true
	done
}

# Set common options
# $1 The kernel source path
function kernelseeds_set_common
{
	local KERNEL_SOURCE_PATH="$1"
	
	kernelseeds_defconfig "$KERNEL_SOURCE_PATH"
	
	echo 'Set common options'

	echo 'Enable /proc/config.gz'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IKCONFIG m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IKCONFIG_PROC y true true

	echo 'Enable UEFI Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EFI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EFI_STUB y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EFI_MIXED n true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EFIVAR_FS m true true

	echo 'Set the timer frequency to 1000Hz'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_HZ_1000 y true true

	echo 'Enable Graphics Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_FB y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_FRAMEBUFFER_CONSOLE y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_AMDGPU m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_CIRRUS_QEMU m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_I915 m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_QXL m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_RADEON m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_UDL m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_VBOXVIDEO m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_VIRTIO_GPU m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_VMWGFX y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_VMWGFX_FBCON y true true
	#kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DRM_SIMPLEDRM y true true
	#kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SYSFB_SIMPLEFB y true true

	echo 'Enable SATA support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_AHCI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_MV y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_NV y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_PROMISE y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_SIL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_SIS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_SVW y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_ULI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_VIA y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SATA_VITESSE y true true

	echo 'Enable SCSI support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_MVSAS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_MVSAS_TASKLET y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_SAS_ATA y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_SAS_LIBSAS y true true

	echo 'Enable NVMe support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BLK_DEV_NVME y true true

	echo 'Enable Advanced Partition Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BLOCK y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_PARTITION_ADVANCED y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION_CUMANA y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION_EESOX y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION_ICS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION_ADFS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION_POWERTEC y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ACORN_PARTITION_RISCIX y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_AIX_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_OSF_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_AMIGA_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ATARI_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MAC_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BSD_DISKLABEL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MINIX_SUBPARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SOLARIS_X86_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_UNIXWARE_DISKLABEL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_LDM_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SGI_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ULTRIX_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SUN_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_KARMA_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SYSV68_PARTITION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CMDLINE_PARTITION y true true

	echo 'Enable Ext Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT2_FS m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT2_FS_XATTR y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT2_FS_POSIX_ACL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT2_FS_SECURITY y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT3_FS m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT3_FS_POSIX_ACL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT3_FS_SECURITY y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT4_FS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT4_FS_POSIX_ACL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_EXT4_FS_SECURITY y true true

	echo 'Enable XFS Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_XFS_FS m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_XFS_SUPPORT_V4 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_XFS_QUOTA y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_XFS_POSIX_ACL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_XFS_RT y true true

	echo 'Enable Btrfs Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BTRFS_FS m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BTRFS_FS_POSIX_ACL y true true

	echo 'Enable iptables support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NETFILTER y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_NF_FILTER m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_NF_NAT m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_NF_TARGET_MASQUERADE m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_NF_TARGET_NETMAP m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_NF_TARGET_REDIRECT m true true

	echo 'Enable Networking support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NET y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_INET y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_PNP y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_IP_PNP_DHCP y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NETDEVICES y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ETHERNET y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NET_VENDOR_INTEL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_E100 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_E1000 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_E1000E y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_VMXNET3 y true true

	echo 'Enable NFS support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NETWORK_FILESYSTEMS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_FS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V2 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V3 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V3_ACL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V4 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_SWAP y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V4_1 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V4_2 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_V4_1_MIGRATION y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_ROOT_NFS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFS_DISABLE_UDP_SUPPORT n true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_V3 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_V3_ACL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_V4 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_BLOCKLAYOUT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_SCSILAYOUT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_FLEXFILELAYOUT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NFSD_V4_SECURITY_LABEL y true true

	echo 'Enable SMB Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_NETWORK_FILESYSTEMS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS m true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_ALLOW_INSECURE_LEGACY y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_WEAK_PW_HASH y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_UPCALL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_XATTR y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_POSIX y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_DFS_UPCALL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_SMB_DIRECT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CIFS_FSCACHE y true true

	echo 'Enable RAID support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BLK_DEV_MD y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MD_LINEAR y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MD_RAID0 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MD_RAID1 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MD_RAID10 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MD_RAID456 y true true

	echo 'Enable USB support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_PCI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_SUPPORT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_XHCI_HCD y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_XHCI_PCI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_XHCI_PCI_RENESAS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_EHCI_HCD y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_OHCI_HCD y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_OHCI_HCD_PCI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_UHCI_HCD y true true

	echo 'Enable USB Storage Support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_ALAUDA y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_CYPRESS_ATACB y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_DATAFAB y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_ENE_UB6250 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_FREECOM y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_ISD200 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_JUMPSHOT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_KARMA y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_ONETOUCH y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_REALTEK y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_SDDR09 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_SDDR55 y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_STORAGE_USBAT y true true

	echo 'Enable VirtIO support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_REMOTEPROC y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_VIRTIO_PCI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_VIRTIO_BLK y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_VIRTIO y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_VIRTIO_NET y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_HW_RANDOM_VIRTIO y true true

	echo 'Enable audio over HDMI support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SND_HDA_INTEL y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SND_HDA_CODEC_HDMI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SND_HDA_GENERIC y true true

	echo 'Enable VMware support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_VMWARE_PVSCSI y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_MPT2SAS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SCSI_MPT3SAS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_VMWARE_VMCI_VSOCKETS m true true

	echo 'A preallocated buffer-size of 2048 (kB) or higher is recommended for the HD-audio driver'
	echo 'CONFIG_SND_HDA_PREALLOC_SIZE=2048' | tee -a .config

	echo 'Power management and ACPI options > CPU Frequency scaling > Default CPUFreq governor (performance)'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE y true true

	echo 'Processor type and features > Preemption Model (Preemptible Kernel (Low-Latency Desktop))'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_PREEMPT y true true

	echo 'Enable Control Group support'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUPS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_FREEZER y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_PIDS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_DEVICE y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CPUSETS y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_CPUACCT y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MEMCG y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MEMCG_SWAP y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_MEMCG_KMEM y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_HUGETLB y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_PERF y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CGROUP_SCHED y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_FAIR_GROUP_SCHED y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CFS_BANDWIDTH y true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_BLK_CGROUP y true true

	echo 'dev-libs/ell and sys-apps/keyutils require CONFIG_KEY_DH_OPERATIONS'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_KEY_DH_OPERATIONS y true true
	echo 'media-libs/mesa requires CONFIG_CHECKPOINT_RESTORE'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_CHECKPOINT_RESTORE y true true
	echo 'www-client/google-chrome requires CONFIG_USER_NS'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USER_NS y true true

	echo 'Clear system-wide ring of truted keys and revocation certificates'
	echo 'CONFIG_SYSTEM_TRUSTED_KEYS=""';
	sed -i -r 's/^CONFIG_SYSTEM_TRUSTED_KEYS=".*"$/CONFIG_SYSTEM_TRUSTED_KEYS=""/' .config
	echo 'CONFIG_SYSTEM_REVOCATION_KEYS=""';
	sed -i -r 's/^CONFIG_SYSTEM_REVOCATION_KEYS=".*"$/CONFIG_SYSTEM_REVOCATION_KEYS=""/' .config

	echo 'Disable SELinux'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_SECURITY_SELINUX n true true
	echo 'Disable USB Attached SCSI since it is broken for seagate drives'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_USB_UAS n true true
	echo 'Disable debug info because it requires pahole at kernel compile time'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DEBUG_INFO n true true
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DEBUG_INFO_BTF n true true
	echo 'Disable "Stack utilization instrumentation" because it floods "used greatest stack depth" to system log'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_DEBUG_STACK_USAGE n true true
	echo 'Disable "Event debugging" because it is autoloaded and floods the system log'
	kernelseeds_set_option "$KERNEL_SOURCE_PATH" CONFIG_INPUT_EVBUG n true true
}

# Set options for Raspberry Pi 2 support
# $1 The kernel source path
function kernelseeds_set_raspberry_pi_2
{
	local KERNEL_SOURCE_PATH="$1"

	echo 'Set options for Raspberry Pi 2 support'

	rm -rf "$TMP/kernelsource"
	cp -a "$KERNEL_SOURCE_PATH" "$TMP/kernelsource"
	pushd "$TMP/kernelsource" > /dev/null

	echo 'Build in SD card support to enable booting off of SD cards'
	echo 'CONFIG_MMC=y' | tee -a .config
	echo 'CONFIG_MMC_BLOCK=y' | tee -a .config

	echo 'Build in support for the Raspberry Pi SD/MMC controller'
	echo 'CONFIG_MMC_SDHCI=y' | tee -a .config
	echo 'MMC_SDHCI_PLTFM=y' | tee -a .config
	echo 'MMC_SDHCI_BCM2835=y' | tee -a .config

	echo 'Build in support for the Raspberry Pi GPU'
	echo 'CONFIG_FB=y' | tee -a .config
	echo 'CONFIG_FB_BCM2708=y' | tee -a .config
	echo 'CONFIG_FRAMEBUFFER_CONSOLE=y' | tee -a .config

	echo 'Enable support for 3D acceleration'
	echo 'Note: This driver requires that "avoid_warnings=2" be present in the config.txt for the firmware, to keep it from smashing the display setup.'
	echo 'CONFIG_DRM=m' | tee -a .config
	echo 'CONFIG_DRM_VC4=m' | tee -a .config

	echo 'Build in support for the Raspberry Pi Ethernet Chipset'
	echo 'CONFIG_USB_NET_SMSC95XX=y' | tee -a .config

	echo 'Disable seccomp due to compile error: "gcc: error: unrecognized command line option ‘-m32’; did you mean ‘-mbe32’?"'
	echo 'CONFIG_SECCOMP=n' | tee -a .config

	kernelseeds_quiet make olddefconfig

	popd > /dev/null
	cp -f "$TMP/kernelsource/.config" "$KERNEL_SOURCE_PATH/.config"
}

#------------------------------------------------------------------------------
# default configuration

KERNEL_SOURCE_PATH=.
OVERRIDE=false
REPLACE=false
TEST=false
TMP="/tmp/$CODENAME.$$"; mkdir -m 0700 -p "$TMP"
TMPFS=false
THREADS=$(grep -c processor /proc/cpuinfo)

#------------------------------------------------------------------------------
# command line arguments

while [ $# -gt 0 ]; do
	case "$1" in
		"-a"|"--architecture")
			export ARCH="$2"
			shift 2
			;;
		"--enable-all-menuconfig")
			kernelseeds_enable_all_menuconfig "$KERNEL_SOURCE_PATH"
			shift
			;;
		"--enable-all-modules")
			kernelseeds_enable_all_modules "$KERNEL_SOURCE_PATH"
			shift
			;;
		"-h"|"--help")
			kernelseeds_help
			exit
			;;
		"--override-disable")
			OVERRIDE=false
			shift
			;;
		"--override-enable")
			OVERRIDE=true
			shift
			;;
		"--replace-disable")
			REPLACE=false
			shift
			;;
		"--replace-enable")
			REPLACE=true
			shift
			;;
		"--set-active-yes")
			kernelseeds_set_active_yes "$KERNEL_SOURCE_PATH"
			shift
			;;
		"--set-common")
			kernelseeds_set_common "$KERNEL_SOURCE_PATH"
			shift
			;;
		"--set-options")
			kernelseeds_set_options "$KERNEL_SOURCE_PATH" "$2" "$REPLACE" "$OVERRIDE"
			shift 2
			;;
		"--set-raspberry-pi-2")
			kernelseeds_set_raspberry_pi_2 "$KERNEL_SOURCE_PATH"
			shift
			;;
		"--test-disable")
			TEST=false
			shift
			;;
		"--test-enable")
			TEST=true
			shift
			;;
		"--tmp")
			TMP="$2"
			shift 2
			;;
		"--tmpfs")
			if ! $TMPFS; then
				mkdir -m 0700 -p "$TMP.tmpfs"
				mount -t tmpfs none "$TMP.tmpfs"
				mv -f "$TMP"/* "$TMP.tmpfs" 2> /dev/null
				rmdir "$TMP"
				TMP="$TMP.tmpfs"
				TMPFS=true
			fi
			shift
			;;
		*)
			kernelseeds_help
			exit 1
			;;
	esac
done
if [ ! -d "$KERNEL_SOURCE_PATH" ]; then
	echo "error: the kernel_source_path at \"$KERNEL_SOURCE_PATH\" is not a directory"
	exit 2
fi
if [ ! -f "$KERNEL_SOURCE_PATH/Makefile" ]; then
	echo "error: the kernel_source_path at \"$KERNEL_SOURCE_PATH\" does not appear to contain a kernel Makefile"
	exit 3
fi

unset ARCH
if $TMPFS; then
	umount "$TMP"
fi
rm -rf --one-file-system "$TMP"