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https://github.com/ostreedev/ostree.git
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92b1a27202
In the OSTree model, executables go in `/usr`, state in `/var` and configuration in `/etc`. Software that lives in `/opt` however messes this up because it often mixes code *and* state, making it harder to manage. More generally, it's sometimes useful to have the OSTree commit contain code under a certain path, but still allow that path to be writable by software and the sysadmin at runtime (`/usr/local` is another instance). Add the concept of state overlays. A state overlay is an overlayfs mount whose upper directory, which contains unmanaged state, is carried forward on top of a lower directory, containing OSTree-managed files. In the example of `/usr/local`, OSTree commits can ship content there, all while allowing users to e.g. add scripts in `/usr/local/bin` when booted into that commit. Some reconciliation logic is executed whenever the base is updated so that newer files in the base are never shadowed by a copied up version in the upper directory. This matches RPM semantics when upgrading packages whose files may have been modified. For ease of integration, this is exposed as a systemd template unit which any downstream distro/user can enable. The instance name is the mountpath in escaped systemd path notation (e.g. `ostree-state-overlay@usr-local.service`). See discussions in https://github.com/ostreedev/ostree/issues/3113 for more details.
80 lines
2.8 KiB
Plaintext
80 lines
2.8 KiB
Plaintext
# Makefile for boot module
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#
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# Copyright (C) 2013 Colin Walters <walters@verbum.org>
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#
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# SPDX-License-Identifier: LGPL-2.0+
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library. If not, see <https://www.gnu.org/licenses/>.
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if BUILDOPT_DRACUT
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# Not using $(libdir) here is intentional, dracut modules go in prefix/lib
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dracutmoddir = $(prefix)/lib/dracut/modules.d/98ostree
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dracutmod_SCRIPTS = src/boot/dracut/module-setup.sh
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endif
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if BUILDOPT_DRACUT_CONF
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dracutconfdir = $(sysconfdir)/dracut.conf.d
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dracutconf_DATA = src/boot/dracut/ostree.conf
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endif
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if BUILDOPT_MKINITCPIO
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mkinitcpioinstalldir = $(prefix)/lib/initcpio/install
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mkinitcpioinstall_SCRIPTS = src/boot/mkinitcpio/ostree
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mkinitcpioconfdir = $(sysconfdir)
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mkinitcpioconf_DATA = src/boot/mkinitcpio/ostree-mkinitcpio.conf
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endif
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if BUILDOPT_SYSTEMD
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systemdsystemunit_DATA = src/boot/ostree-prepare-root.service \
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src/boot/ostree-remount.service \
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src/boot/ostree-boot-complete.service \
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src/boot/ostree-finalize-staged.service \
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src/boot/ostree-finalize-staged.path \
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src/boot/ostree-finalize-staged-hold.service \
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src/boot/ostree-state-overlay@.service \
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$(NULL)
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systemdtmpfilesdir = $(prefix)/lib/tmpfiles.d
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dist_systemdtmpfiles_DATA = src/boot/ostree-tmpfiles.conf
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# Allow the distcheck install under $prefix test to pass
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AM_DISTCHECK_CONFIGURE_FLAGS += --with-systemdsystemunitdir='$${libdir}/systemd/system'
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endif
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if !BUILDOPT_BUILTIN_GRUB2_MKCONFIG
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# We're using the system grub2-mkconfig generator
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pkglibexec_SCRIPTS += src/boot/grub2/grub2-15_ostree
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install-grub2-config-hook:
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mkdir -p $(DESTDIR)$(grub2configdir)
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ln -sf $(pkglibexecdir)/grub2-15_ostree $(DESTDIR)$(grub2configdir)/15_ostree
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grub2configdir = $(sysconfdir)/grub.d
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INSTALL_DATA_HOOKS += install-grub2-config-hook
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else
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# We're using our internal generator
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ostree_boot_SCRIPTS += src/boot/grub2/ostree-grub-generator
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endif
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EXTRA_DIST += src/boot/dracut/module-setup.sh \
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src/boot/dracut/ostree.conf \
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src/boot/mkinitcpio \
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src/boot/ostree-boot-complete.service \
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src/boot/ostree-prepare-root.service \
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src/boot/ostree-finalize-staged.path \
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src/boot/ostree-remount.service \
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src/boot/ostree-finalize-staged.service \
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src/boot/ostree-finalize-staged-hold.service \
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src/boot/ostree-state-overlay@.service \
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src/boot/grub2/grub2-15_ostree \
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src/boot/grub2/ostree-grub-generator \
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$(NULL)
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