ostree/Makefile-switchroot.am
Alexander Larsson c29f4193cd ostree-prepare-root: Validate ed25519 signatures when requested
If requested, by specifying ot-composefs=signed=/path/to/pub.key then
the commit object is validated against the specified ed25519 public
key, and if valid, the composefs digest from the commit object is used
to ensure we boot the right digest.
2023-07-11 14:08:33 -04:00

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# Copyright (C) 2011 Colin Walters <walters@verbum.org>
#
# SPDX-License-Identifier: LGPL-2.0+
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <https://www.gnu.org/licenses/>.
ostree_prepare_root_SOURCES = \
src/switchroot/ostree-mount-util.h
ostree_prepare_root_CFLAGS =
ostree_prepare_root_CPPFLAGS = $(AM_CPPFLAGS)
ostree_prepare_root_LDADD =
if BUILDOPT_SYSTEMD
ostree_boot_PROGRAMS += ostree-remount
else
# It is built anyway as a side-effect of having the symlink in tests/,
# and if we declare it here, it gets cleaned up properly
check_PROGRAMS += ostree-remount
endif
if BUILDOPT_USE_STATIC_COMPILER
ostree_prepare_root_SOURCES += src/switchroot/ostree-prepare-root-static.c
# ostree-prepare-root can be used as init in a system without a populated /lib.
# To support this use case we need to link statically as we will be unable to
# locate libc.so at run time if it's not installed in /lib.
#
# We support building ostree-prepare-root with a different compiler to the rest
# of ostree so we can use musl rather than glibc. This reduces the size of the
# executable significantly: from ~700K -> ~30K. We have to use _SCRIPTS here
# to get autotools to install this as an executable but without generating rules
# to make it itself which we have specified manually. See
# https://lists.gnu.org/archive/html/help-gnu-utils/2007-01/msg00007.html
ostree_boot_SCRIPTS += ostree-prepare-root
ostree-prepare-root : $(ostree_prepare_root_SOURCES)
$(STATIC_COMPILER) -o $@ -static $(top_srcdir)/src/switchroot/ostree-prepare-root-static.c $(ostree_prepare_root_CPPFLAGS) $(AM_CFLAGS) $(DEFAULT_INCLUDES) -DOSTREE_PREPARE_ROOT_STATIC=1
CLEANFILES += ostree-prepare-root
else
ostree_boot_PROGRAMS += ostree-prepare-root
ostree_prepare_root_CFLAGS += $(AM_CFLAGS) -Isrc/switchroot -I$(srcdir)/composefs -I$(srcdir)/src/libostree -I$(srcdir)/src/libotcore -I$(srcdir)/src/libotutil
ostree_prepare_root_SOURCES += src/switchroot/ostree-prepare-root.c
ostree_prepare_root_CPPFLAGS += $(OT_INTERNAL_GIO_UNIX_CFLAGS) $(OT_DEP_CRYPTO_CFLAGS) -I $(srcdir)/libglnx
ostree_prepare_root_LDADD += $(AM_LDFLAGS) $(OT_INTERNAL_GIO_UNIX_LIBS) $(OT_DEP_CRYPTO_LIBS) libotcore.la libotutil.la libglnx.la
endif # BUILDOPT_USE_STATIC_COMPILER
ostree_remount_SOURCES = \
src/switchroot/ostree-mount-util.h \
src/switchroot/ostree-remount.c \
$(NULL)
ostree_remount_CPPFLAGS = $(AM_CPPFLAGS) $(OT_INTERNAL_GIO_UNIX_CFLAGS) -Isrc/switchroot -I$(srcdir)/libglnx
ostree_remount_LDADD = $(AM_LDFLAGS) $(OT_INTERNAL_GIO_UNIX_LIBS) libglnx.la
if USE_COMPOSEFS
ostree_prepare_root_LDADD += libcomposefs.la
endif
if BUILDOPT_SYSTEMD
ostree_prepare_root_CPPFLAGS += -DHAVE_SYSTEMD=1
ostree_prepare_root_LDADD += $(LIBSYSTEMD_LIBS)
endif
# This is the "new mode" of using a generator for /var; see
# https://github.com/ostreedev/ostree/issues/855
if BUILDOPT_SYSTEMD_AND_LIBMOUNT
ostree_prepare_root_CPPFLAGS += -DHAVE_SYSTEMD_AND_LIBMOUNT=1
ostree_remount_CPPFLAGS += -DHAVE_SYSTEMD_AND_LIBMOUNT=1
systemdsystemgenerator_PROGRAMS = ostree-system-generator
GITIGNOREFILES += $(systemdsystemgenerator_PROGRAMS)
ostree_system_generator_SOURCES = src/switchroot/ostree-mount-util.h \
src/switchroot/ostree-system-generator.c
ostree_system_generator_CPPFLAGS = $(AM_CPPFLAGS) -I$(srcdir)/libglnx -I$(srcdir)/src/libostree
ostree_system_generator_CFLAGS = $(AM_CFLAGS) $(OT_INTERNAL_GIO_UNIX_CFLAGS)
ostree_system_generator_LDADD = $(AM_LDFLAGS) libglnx.la libostree-1.la $(OT_INTERNAL_GIO_UNIX_LIBS)
# Allow the distcheck install under $prefix test to pass
AM_DISTCHECK_CONFIGURE_FLAGS += --with-systemdsystemgeneratordir='$${libdir}/systemd/system-generators'
endif