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install: Don't allow installation over the install files

This commit is contained in:
Brian Anderson 2014-03-26 18:51:55 -07:00
parent 92d0ec2ec7
commit c060e2e515
2 changed files with 16 additions and 5 deletions
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5
mk/dist.mk
View File

@ -199,10 +199,9 @@ dist-install-dir-$(1): PREPARE_LIB_CMD=$(DEFAULT_PREPARE_LIB_CMD)
dist-install-dir-$(1): PREPARE_MAN_CMD=$(DEFAULT_PREPARE_MAN_CMD)
dist-install-dir-$(1): PREPARE_CLEAN=true
dist-install-dir-$(1): prepare-base-dir-$(1)
# Write the install manifest, making sure the manifest contains itself
$$(Q)touch $$(PREPARE_DEST_DIR)/$$(CFG_LIBDIR_RELATIVE)/rustlib/manifest-$(1).in
$$(Q)(cd $$(PREPARE_DEST_DIR)/ && find -type f | sed 's/^\.\///') \
> $$(PREPARE_DEST_DIR)/$$(CFG_LIBDIR_RELATIVE)/rustlib/manifest-$(1).in
> tmp/dist/manifest-$(1).in
$$(Q)mv tmp/dist/manifest-$(1).in $$(PREPARE_DEST_DIR)/$$(CFG_LIBDIR_RELATIVE)/rustlib/manifest.in
# Add remaining non-installed files
$$(Q)$$(PREPARE_MAN_CMD) $$(S)COPYRIGHT $$(PREPARE_DEST_DIR)
$$(Q)$$(PREPARE_MAN_CMD) $$(S)LICENSE-APACHE $$(PREPARE_DEST_DIR)

16
src/etc/install.sh
View File

@ -227,17 +227,29 @@ fi
step_msg "validating $CFG_SELF args"
validate_opt
# OK, let's get installing ...
# Sanity check: can we can write to the destination?
umask 022 && mkdir -p "${CFG_LIBDIR}"
need_ok "can't write to destination. consider `sudo`."
need_ok "can't write to destination. consider 'sudo'."
touch "${CFG_LIBDIR}/rust-install-probe" 2> /dev/null
if [ $? -ne 0 ]
then
err "can't write to destination. consider `sudo`."
err "can't write to destination. consider 'sudo'."
fi
rm "${CFG_LIBDIR}/rust-install-probe"
need_ok "failed to remove install probe"
# Sanity check: don't install to the directory containing the installer.
# That would surely cause chaos.
INSTALLER_DIR="$(cd $(dirname $0) && pwd)"
PREFIX_DIR="$(cd ${CFG_PREFIX} && pwd)"
if [ "${INSTALLER_DIR}" = "${PREFIX_DIR}" ]
then
err "can't install to same directory as installer"
fi
# The file name of the manifest we're going to create during install
INSTALLED_MANIFEST="${CFG_LIBDIR}/rustlib/manifest"