ebuild-helpers/xattr/install: use install-xattr
Currently bin/ebuild-helpers/xattr/install uses ${PORTAGE_BIN_PATH}/install.py
as a wrapper to coreutils' install to preserve a file's extended attributes when
installing, usually during src_install(). This is needed, for instance, when
preserving xattr based PaX flags, bug #465000. However the python wrapper is
very slow, comment #42 of bug #465000. A C wrapper was developed and tested,
bugs #501534 and #511984. This patch checks for the existence of the C wrapper,
and uses it, falling back on the python wrapper only if not found, or if over-
ridden by ${PORTAGE_INSTALL_XATTR_IMPLEMENTATION}.
diff --git a/bin/ebuild-helpers/xattr/install b/bin/ebuild-helpers/xattr/install
index f51f621..d572fe6 100755
--- a/bin/ebuild-helpers/xattr/install
+++ b/bin/ebuild-helpers/xattr/install
@@ -4,9 +4,32 @@
PORTAGE_BIN_PATH=${PORTAGE_BIN_PATH:-/usr/lib/portage/bin}
PORTAGE_PYM_PATH=${PORTAGE_PYM_PATH:-/usr/lib/portage/pym}
+INSTALL_XATTR=${EPREFIX}/usr/bin/install-xattr
# Use safe cwd, avoiding unsafe import for bug #469338.
export __PORTAGE_HELPER_CWD=${PWD}
cd "${PORTAGE_PYM_PATH}"
export __PORTAGE_HELPER_PATH=${BASH_SOURCE[0]}
-PYTHONPATH=${PORTAGE_PYTHONPATH:-${PORTAGE_PYM_PATH}} \
- exec "${PORTAGE_PYTHON:-/usr/bin/python}" "${PORTAGE_BIN_PATH}/install.py" "$@"
+
+if [[ ${PORTAGE_INSTALL_XATTR_IMPLEMENTATION} == "c" ]]; then
+ implementation="c"
+elif [[ ${PORTAGE_INSTALL_XATTR_IMPLEMENTATION} == "python" ]]; then
+ implementation="python"
+else
+ # If PORTAGE_INSTALL_XATTR_IMPLEMENTATION is unset or not set to "c" or "python"
+ # then we'll autodetect, preferring "c" but falling back on "python"
+ if [[ -x "${INSTALL_XATTR}" ]]; then
+ implementation="c"
+ else
+ implementation="python"
+ fi
+fi
+
+if [[ "${implementation}" == "c" ]]; then
+ exec "${INSTALL_XATTR}" "$@"
+elif [[ "${implementation}" == "python" ]]; then
+ PYTHONPATH=${PORTAGE_PYTHONPATH:-${PORTAGE_PYM_PATH}} \
+ exec "${PORTAGE_PYTHON:-/usr/bin/python}" "${PORTAGE_BIN_PATH}/install.py" "$@"
+else
+ echo "Unknown implementation for PORTAGE_INSTALL_XATTR_IMPLEMENTATION"
+ exit -1
+fi
