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gentoo-overlay/eclass/java-vm-2.eclass

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8.2 KiB

# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: java-vm-2.eclass
# @MAINTAINER:
# java@gentoo.org
# @SUPPORTED_EAPIS: 6 8
# @BLURB: Java Virtual Machine eclass
# @DESCRIPTION:
# This eclass provides functionality which assists with installing
# virtual machines, and ensures that they are recognized by java-config.
case ${EAPI:-0} in
[68]) ;;
*) die "EAPI=${EAPI} is not supported" ;;
esac
inherit multilib pax-utils prefix xdg-utils
EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm pkg_postrm
RDEPEND="
dev-java/java-config
app-eselect/eselect-java
"
DEPEND="${RDEPEND}"
export WANT_JAVA_CONFIG=2
# @ECLASS-VARIABLE: JAVA_VM_CONFIG_DIR
# @INTERNAL
# @DESCRIPTION:
# Where to place the vm env file.
JAVA_VM_CONFIG_DIR="/usr/share/java-config-2/vm"
# @ECLASS-VARIABLE: JAVA_VM_DIR
# @INTERNAL
# @DESCRIPTION:
# Base directory for vm links.
JAVA_VM_DIR="/usr/lib/jvm"
# @ECLASS-VARIABLE: JAVA_VM_SYSTEM
# @INTERNAL
# @DESCRIPTION:
# Link for system-vm
JAVA_VM_SYSTEM="/etc/java-config-2/current-system-vm"
# @ECLASS-VARIABLE: JAVA_VM_BUILD_ONLY
# @DESCRIPTION:
# Set to YES to mark a vm as build-only.
JAVA_VM_BUILD_ONLY="${JAVA_VM_BUILD_ONLY:-FALSE}"
# @FUNCTION: java-vm-2_pkg_setup
# @DESCRIPTION:
# default pkg_setup
#
# Initialize vm handle.
java-vm-2_pkg_setup() {
if [[ "${SLOT}" != "0" ]]; then
VMHANDLE=${PN}-${SLOT}
else
VMHANDLE=${PN}
fi
}
# @FUNCTION: java-vm-2_pkg_postinst
# @DESCRIPTION:
# default pkg_postinst
#
# Set the generation-2 system VM, if it isn't set or the setting is
# invalid. Also update mime database.
java-vm-2_pkg_postinst() {
if [[ ! -d ${EROOT}${JAVA_VM_SYSTEM} ]]; then
eselect java-vm set system "${VMHANDLE}"
einfo "${P} set as the default system-vm."
fi
xdg_desktop_database_update
}
# @FUNCTION: java-vm-2_pkg_prerm
# @DESCRIPTION:
# default pkg_prerm
#
# Warn user if removing system-vm.
java-vm-2_pkg_prerm() {
if [[ $(GENTOO_VM= java-config -f 2>/dev/null) == ${VMHANDLE} && -z ${REPLACED_BY_VERSION} ]]; then
ewarn "It appears you are removing your system-vm! Please run"
ewarn "\"eselect java-vm list\" to list available VMs, then use"
ewarn "\"eselect java-vm set system\" to set a new system-vm!"
fi
}
# @FUNCTION: java-vm-2_pkg_postrm
# @DESCRIPTION:
# default pkg_postrm
#
# Update mime database.
java-vm-2_pkg_postrm() {
xdg_desktop_database_update
}
# @FUNCTION: get_system_arch
# @DESCRIPTION:
# Get Java specific arch name.
#
# NOTE the mips and sparc values are best guesses. Oracle uses sparcv9
# but does OpenJDK use sparc64? We don't support OpenJDK on sparc or any
# JVM on mips though so it doesn't matter much.
get_system_arch() {
local abi=${1-${ABI}}
case $(get_abi_CHOST ${abi}) in
mips*l*) echo mipsel ;;
mips*) echo mips ;;
powerpc64le*) echo ppc64le ;;
*)
case ${abi} in
*_fbsd) get_system_arch ${abi%_fbsd} ;;
arm64) echo aarch64 ;;
hppa) echo parisc ;;
sparc32) echo sparc ;;
sparc64) echo sparcv9 ;;
x86*) echo i386 ;;
*) echo ${abi} ;;
esac ;;
esac
}
# @FUNCTION: set_java_env
# @DESCRIPTION:
# Installs a vm env file.
# DEPRECATED, use java-vm_install-env instead.
set_java_env() {
debug-print-function ${FUNCNAME} $*
local platform="$(get_system_arch)"
local env_file="${ED}${JAVA_VM_CONFIG_DIR}/${VMHANDLE}"
if [[ ${1} ]]; then
local source_env_file="${1}"
else
local source_env_file="${FILESDIR}/${VMHANDLE}.env"
fi
if [[ ! -f ${source_env_file} ]]; then
die "Unable to find the env file: ${source_env_file}"
fi
dodir ${JAVA_VM_CONFIG_DIR}
sed \
-e "s/@P@/${P}/g" \
-e "s/@PN@/${PN}/g" \
-e "s/@PV@/${PV}/g" \
-e "s/@PF@/${PF}/g" \
-e "s/@SLOT@/${SLOT}/g" \
-e "s/@PLATFORM@/${platform}/g" \
-e "s/@LIBDIR@/$(get_libdir)/g" \
-e "/^LDPATH=.*lib\\/\\\"/s|\"\\(.*\\)\"|\"\\1${platform}/:\\1${platform}/server/\"|" \
< "${source_env_file}" \
> "${env_file}" || die "sed failed"
(
echo "VMHANDLE=\"${VMHANDLE}\""
echo "BUILD_ONLY=\"${JAVA_VM_BUILD_ONLY}\""
) >> "${env_file}"
eprefixify ${env_file}
[[ -n ${JAVA_PROVIDE} ]] && echo "PROVIDES=\"${JAVA_PROVIDE}\"" >> ${env_file}
local java_home=$(source "${env_file}"; echo ${JAVA_HOME})
[[ -z ${java_home} ]] && die "No JAVA_HOME defined in ${env_file}"
# Make the symlink
dodir "${JAVA_VM_DIR}"
dosym "${java_home}" "${JAVA_VM_DIR}/${VMHANDLE}"
}
# @FUNCTION: java-vm_install-env
# @DESCRIPTION:
#
# Installs a Java VM environment file. The source can be specified but
# defaults to ${FILESDIR}/${VMHANDLE}.env.sh.
#
# Environment variables within this file will be resolved. You should
# escape the $ when referring to variables that should be resolved later
# such as ${JAVA_HOME}. Subshells may be used but avoid using double
# quotes. See icedtea-bin.env.sh for a good example.
java-vm_install-env() {
debug-print-function ${FUNCNAME} "$*"
local env_file="${ED}${JAVA_VM_CONFIG_DIR}/${VMHANDLE}"
local source_env_file="${1-${FILESDIR}/${VMHANDLE}.env.sh}"
if [[ ! -f "${source_env_file}" ]]; then
die "Unable to find the env file: ${source_env_file}"
fi
dodir "${JAVA_VM_CONFIG_DIR}"
# Here be dragons! ;) -- Chewi
eval echo "\"$(cat <<< "$(sed 's:":\\":g' "${source_env_file}")")\"" > "${env_file}" ||
die "failed to create Java env file"
(
echo "VMHANDLE=\"${VMHANDLE}\""
echo "BUILD_ONLY=\"${JAVA_VM_BUILD_ONLY}\""
[[ ${JAVA_PROVIDE} ]] && echo "PROVIDES=\"${JAVA_PROVIDE}\"" || true
) >> "${env_file}" || die "failed to append to Java env file"
local java_home=$(unset JAVA_HOME; source "${env_file}"; echo ${JAVA_HOME})
[[ -z ${java_home} ]] && die "No JAVA_HOME defined in ${env_file}"
# Make the symlink
dodir "${JAVA_VM_DIR}"
dosym "${java_home}" "${JAVA_VM_DIR}/${VMHANDLE}"
}
# @FUNCTION: java-vm_set-pax-markings
# @DESCRIPTION:
# Set PaX markings on all JDK/JRE executables to allow code-generation on
# the heap by the JIT compiler.
#
# The markings need to be set prior to the first invocation of the the freshly
# built / installed VM. Be it before creating the Class Data Sharing archive or
# generating cacerts. Otherwise a PaX enabled kernel will kill the VM.
# Bug #215225 #389751
#
# @CODE
# Parameters:
# $1 - JDK/JRE base directory.
#
# Examples:
# java-vm_set-pax-markings "${S}"
# java-vm_set-pax-markings "${ED}"/opt/${P}
# @CODE
java-vm_set-pax-markings() {
debug-print-function ${FUNCNAME} "$*"
[[ $# -ne 1 ]] && die "${FUNCNAME}: takes exactly one argument"
[[ ! -f "${1}"/bin/java ]] \
&& die "${FUNCNAME}: argument needs to be JDK/JRE base directory"
local executables=( "${1}"/bin/* )
[[ -d "${1}"/jre ]] && executables+=( "${1}"/jre/bin/* )
# Usually disabling MPROTECT is sufficient.
local pax_markings="m"
# On x86 for heap sizes over 700MB disable SEGMEXEC and PAGEEXEC as well.
use x86 && pax_markings+="sp"
pax-mark ${pax_markings} $(list-paxables "${executables[@]}")
}
# @FUNCTION: java-vm_revdep-mask
# @DESCRIPTION:
# Installs a revdep-rebuild control file which SEARCH_DIR_MASK set to the path
# where the VM is installed. Prevents pointless rebuilds - see bug #177925.
# Also gives a notice to the user.
#
# @CODE
# Parameters:
# $1 - Path of the VM (defaults to /opt/${P} if not set)
#
# Examples:
# java-vm_revdep-mask
# java-vm_revdep-mask /path/to/jdk/
#
# @CODE
java-vm_revdep-mask() {
debug-print-function ${FUNCNAME} "$*"
local VMROOT="${1-"${EPREFIX}"/opt/${P}}"
dodir /etc/revdep-rebuild
echo "SEARCH_DIRS_MASK=\"${VMROOT}\"" >> "${ED}/etc/revdep-rebuild/61-${VMHANDLE}" \
|| die "Failed to write revdep-rebuild mask file"
}
# @FUNCTION: java-vm_sandbox-predict
# @DESCRIPTION:
# Install a sandbox control file. Specified paths won't cause a sandbox
# violation if opened read write but no write takes place. See bug 388937#c1
#
# @CODE
# Examples:
# java-vm_sandbox-predict /dev/random /proc/self/coredump_filter
# @CODE
java-vm_sandbox-predict() {
debug-print-function ${FUNCNAME} "$*"
[[ -z "${1}" ]] && die "${FUNCNAME} takes at least one argument"
local path path_arr=("$@")
# subshell this to prevent IFS bleeding out dependant on bash version.
# could use local, which *should* work, but that requires a lot of testing.
path=$(IFS=":"; echo "${path_arr[*]}")
dodir /etc/sandbox.d
echo "SANDBOX_PREDICT=\"${path}\"" > "${ED}/etc/sandbox.d/20${VMHANDLE}" \
|| die "Failed to write sandbox control file"
}