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bc8118d515839dc598f437aa01f07a771646968d
finit/configure.ac
T
Joachim Wiberg bc8118d515 Fix #418: support systems with a broken RTC 
This patch introduces a new configure option --with-rtc-file=FILE.  When
enabled the RTC plugin detects missing RTC device and falls back to save
and restore system time from a file instead.  When --with-rtc-file is
used without an argument the default file is /var/lib/misc/rtc, but the
feature itself is disabled by default.

The usefulness of this feature may not be obvious at first, but some
systems are equipped with an RTC that resets to a random date at power
on.  This can be really bad in the case the date is far in the future,
because an NTP sync would then cause time skips backwards, which shows
up in logs and causes a whole lot of pain in alarm systems.

The solution is to disable the RTC driver or device tree node, and when
Finit starts up, the RTC plugin detects a the device node and instead
restores time from the last save game.  Meaning time will always only
move forwards.

NOTE: when Finit is built --with-rtc-file we always save to disk, but
      only restore from the "save game" if restoring from RTC fails.
      If the system has no RTC we always restore from disk.

      As an added bonus, this change also makes sure to periodically
      sync also the RTC with the system clock.  Useful for systems
      that do not run an NTP client.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2024-11-04 10:40:35 +01:00

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AC_INIT([Finit], [4.8], [https://github.com/troglobit/finit/issues],
[finit], [https://troglobit.com/projects/finit/])
AC_CONFIG_AUX_DIR(aux)
AM_INIT_AUTOMAKE([1.11 foreign dist-xz subdir-objects])
AM_SILENT_RULES([yes])
AC_CONFIG_SRCDIR([src/finit.c])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([Makefile
contrib/Makefile
contrib/alpine/Makefile contrib/alpine/finit.d/Makefile contrib/alpine/finit.d/available/Makefile
contrib/debian/Makefile contrib/debian/finit.d/Makefile contrib/debian/finit.d/available/Makefile
contrib/void/Makefile contrib/void/finit.d/Makefile contrib/void/finit.d/available/Makefile
doc/Makefile
man/Makefile
plugins/Makefile
src/Makefile
system/Makefile system/10-hotplug.conf
test/test.env test/Makefile
test/lib/Makefile test/src/Makefile
tmpfiles.d/Makefile])
# Older versions of autoconf (<2.58) do not have AC_CONFIG_MACRO_DIR()
#m4_include([m4/plugin.m4])
#m4_include([m4/expand.m4])
AC_CONFIG_MACRO_DIR([m4])
# Handle building plugins either as dynamically loadable, or built-in
LT_INIT([shared disable-static dlopen aix-soname=both disable-fast-install])
# Checks for programs.
AC_PROG_CC
AC_PROG_LN_S
AC_PROG_INSTALL
AC_PROG_MKDIR_P
# Configuration.
AC_CHECK_HEADERS([termios.h sys/ioctl.h mntent.h sys/sysmacros.h])
AC_CHECK_FUNCS([strstr getopt getmntent getmntent_r])
# Check for uint[8,16,32]_t
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
# Check for pkg-config first, warn if it's not installed
PKG_PROG_PKG_CONFIG
# Check for required libraries
PKG_CHECK_MODULES([uev], [libuev >= 2.2.0])
PKG_CHECK_MODULES([lite], [libite >= 2.2.0])
# Check for configured Finit features
AC_ARG_ENABLE(auto_reload,
AS_HELP_STRING([--enable-auto-reload], [Automatic reload on any .conf change]),,[
enable_auto_reload=no])
AC_ARG_ENABLE(kernel_cmdline,
AS_HELP_STRING([--enable-kernel-cmdline], [Parse init args from /proc/cmdline (don't use!)]),,[
enable_kernel_cmdline=no])
AC_ARG_ENABLE(fastboot,
AS_HELP_STRING([--enable-fastboot], [Skip fsck check on filesystems listed in /etc/fstab]),,[
enable_fastboot=no])
AC_ARG_ENABLE(fsckfix,
AS_HELP_STRING([--enable-fsckfix], [Run fsck fix mode (options: -yf) on filesystems listed in /etc/fstab]),,[
enable_fsckfix=no])
AC_ARG_ENABLE(cgroup,
AS_HELP_STRING([--disable-cgroup], [Disable cgroup v2 support, default: autodetect from /sys/fs/cgroup]),,[
enable_cgroup=yes])
AC_ARG_ENABLE(redirect,
AS_HELP_STRING([--disable-redirect], [Disable redirection of service output to /dev/null]),,[
enable_redirect=yes])
AC_ARG_ENABLE(kernel_logging,
AS_HELP_STRING([--disable-kernel-logging], [Disable kernel logging to console (use 'quiet' instead!]),,[
enable_kernel_logging=yes])
AC_ARG_ENABLE(logrotate,
AS_HELP_STRING([--disable-logrotate], [Disable built-in rotation of /var/log/wtmp]),,[
enable_logrotate=yes])
AC_ARG_ENABLE(doc,
AS_HELP_STRING([--disable-doc], [Disable build and install of doc/ section]),,[
enable_doc=yes])
AC_ARG_ENABLE(contrib,
AS_HELP_STRING([--disable-contrib], [Disable build and install of contrib section]),,[
enable_contrib=yes])
AC_ARG_ENABLE([rescue],
AS_HELP_STRING([--disable-rescue], [Disable potentially unsafe rescue mode]),,
[enable_rescue=yes])
# Check for extra plugins to enable
AC_ARG_ENABLE(all_plugins,
AS_HELP_STRING([--enable-all-plugins], [Enable all plugins, default: auto]),
enable_all_plugins=$enableval, enable_all_plugins=auto)
AC_PLUGIN([alsa-utils], [no], [Save and restore ALSA sound settings using alsactl])
AC_PLUGIN([dbus], [no], [Setup and start system message bus, D-Bus])
AC_PLUGIN([modules-load], [no], [Scans /etc/modules-load.d for modules to load])
AC_PLUGIN([modprobe], [no], [Coldplug modules using modalias magic])
AC_PLUGIN([resolvconf], [no], [Setup necessary files for resolvconf])
AC_PLUGIN([x11-common], [no], [Console setup (for X)])
AC_PLUGIN([netlink], [yes], [Basic netlink plugin for IFUP/IFDN and GW events. Can be replaced with externally built plugin that links with libnl or similar.])
AC_PLUGIN([hook-scripts], [no], [Trigger script execution from hook points])
AC_PLUGIN([hotplug], [yes], [Start udevd or mdev kernel event datamon])
AC_PLUGIN([rtc], [yes], [Save and restore RTC using hwclock])
AC_PLUGIN([tty], [yes], [Automatically activate new TTYs, e.g. USB-to-serial])
AC_PLUGIN([urandom], [yes], [Setup and save random seed at boot/shutdown])
AC_PLUGIN([testserv], [no], [Test plugin to start test serv daemon])
# Check for extra arguments or packages
AC_ARG_WITH([bash-completion-dir],
AS_HELP_STRING([--with-bash-completion-dir[=PATH]], [Directory to install Bash completion, default: auto]),
[bash_dir=$withval], [bash_dir=yes])
AC_ARG_WITH(fstab,
AS_HELP_STRING([--with-fstab=FILE], [System default fstab, default $sysconfdir/fstab]),
[fstab=$withval], [fstab=yes])
AC_ARG_WITH(heading,
AS_HELP_STRING([--with-heading=GREET], [Heading for boot progress. Default: PRETTY_NAME from /etc/os-release, fallback to "Finit vX.YY"]),
[heading=$withval], [heading=yes])
AC_ARG_WITH(config,
AS_HELP_STRING([--with-config=CONFIG], [Finit bootstrap config file, default /etc/finit.conf]),
[conf=$withval], [conf=yes])
AC_ARG_WITH(rcsd,
AS_HELP_STRING([--with-rcsd=DIR], [Finit rcS.d/ directory, default /etc/finit.d]),
[rcsd=$withval], [rcsd=yes])
AC_ARG_WITH(rc-local,
AS_HELP_STRING([--with-rc-local=FILE], [SysV init /etc/rc.local file, default /etc/rc.local]),
[rclocal=$withval], [rclocal=yes])
AC_ARG_WITH(sysconfig,
AS_HELP_STRING([--with-sysconfig=DIR], [System environment directory, sourced by .conf files, default /etc/default & /etc/conf.d]),
[sysconfig=$withval], [sysconfig=default])
AC_ARG_WITH(group,
AS_HELP_STRING([--with-group=NAME], [Group for /run/finit/socket (initctl), default: root]),
[group=$withval], [group=root])
AC_ARG_WITH(hostname,
AS_HELP_STRING([--with-hostname=NAME], [If /etc/hostname is missing, default: noname]),
[hostname=$withval], [hostname=yes])
AC_ARG_WITH(runlevel,
AS_HELP_STRING([--with-runlevel=N], [Runlevel to switch to after bootstrap [1-9], default: 2]),
[runlevel=$withval], [runlevel=yes])
AC_ARG_WITH(random-seed,
AS_HELP_STRING([--with-random-seed=FILE], [Save a random seed for /dev/urandom across reboots, default /var/lib/misc/random-seed]),
[random_seed=$withval], [random_seed=yes])
AC_ARG_WITH(keventd,
AS_HELP_STRING([--with-keventd], [Enable built-in keventd, default: no]),, [with_keventd=no])
AC_ARG_WITH(sulogin,
AS_HELP_STRING([--with-sulogin@<:@=USER@:>@], [Enable built-in sulogin, optional USER to request password for (default root), default: no.]),[sulogin=$withval],[with_sulogin=no])
AC_ARG_WITH(watchdog,
AS_HELP_STRING([--with-watchdog@<:@=DEV@:>@], [Enable built-in watchdog, default: /dev/watchdog]),
[watchdog=$withval], [with_watchdog=no watchdog=])
AC_ARG_WITH(hook-scripts-path,
AS_HELP_STRING([--with-hook-scripts-path=DIR], [Base directory for hook scripts, default $libexecdir/finit/hook]),
[hook_scripts_path=$withval], [hook_scripts_path=yes])
AC_ARG_WITH(plugin-path,
AS_HELP_STRING([--with-plugin-path=DIR], [Search path for external plugins, default /usr/lib/finit/plugins:/usr/local/lib/finit/plugins]),
[plugin_path=$withval], [plugin_path=yes])
AC_ARG_WITH(rtc-date,
AS_HELP_STRING([--with-rtc-date=DATE], [If RTC date/time is too old, restore to DATE, format "YYYY-MM-DD HH:MM", default "2000-01-01 00:00"]),
[rtc_date=$withval], [rtc_date=no])
AC_ARG_WITH(rtc-file,
AS_HELP_STRING([--with-rtc-file=FILE], [If RTC is missing, save and restore system clock from this file, default: no]),
[rtc_file=$withval], [rtc_file=no])
### Enable features ###########################################################################
# Create config.h from selected features and fallback defaults
AS_IF([test "x$enable_auto_reload" = "xyes"], [
AC_DEFINE(AUTO_RELOAD, 1, [Finit automatically does `initctl reload` on any .conf change])])
AS_IF([test "x$enable_kernel_cmdline" = "xyes"], [
AC_DEFINE(KERNEL_CMDLINE, 1, [Dumpster diving after init args from /proc/cmdline])])
AS_IF([test "x$enable_kernel_logging" = "xyes"], [
AC_DEFINE(KERNEL_LOGGING, 1, [Keep kernel warn/err logs to console])])
AS_IF([test "x$enable_cgroup" = "xyes"], [
AC_DEFINE(CGROUP2_ENABLED, 1, [Autodetect cgroup v2 support from /sys/fs/cgroup])])
AS_IF([test "x$enable_fastboot" = "xyes"], [
AC_DEFINE(FAST_BOOT, 1, [Skip fsck check on filesystems listed in /etc/fstab])])
AS_IF([test "x$enable_fsckfix" = "xyes"], [
AC_DEFINE(FSCK_FIX, 1, [Run fsck fix mode (options: -yf) on filesystems listed in /etc/fstab])])
AS_IF([test "x$enable_redirect" = "xyes"], [
AC_DEFINE(REDIRECT_OUTPUT, 1, [Enable redirection of service output to /dev/null])])
### Disable features ###########################################################################
AS_IF([test "x$enable_logrotate" != "xno"], [
AC_DEFINE(LOGROTATE_ENABLED, 1, [Enable built-in rotation of /var/log/wtmp et al.])])
AS_IF([test "x$enable_rescue" != "xno"], [
AC_DEFINE([RESCUE_MODE], 1, [Define to enable support for rescue mode.])])
AM_CONDITIONAL(LOGROTATE, [test "x$enable_logrotate" = "xyes"])
### With features ##############################################################################
AS_IF([test "x$bash_dir" = "xyes"], [
PKG_CHECK_MODULES([BASH_COMPLETION], [bash-completion >= 2.0],
[BASH_DIR="$(pkg-config --variable=completionsdir bash-completion)"],
[BASH_DIR="$datadir/bash-completion/completions"])], [
BASH_DIR="$bash_dir"])
AS_IF([test "x$with_fstab" != "xno"], [
AS_IF([test "x$fstab" = "xyes"], [fstab=$sysconfdir/fstab])
AC_EXPAND_DIR(fstab_path, "$fstab")
AC_DEFINE_UNQUOTED(FINIT_FSTAB, "$fstab_path", [Built-in default: /etc/fstab])],[
AC_DEFINE_UNQUOTED(FINIT_FSTAB, NULL, [No built-in default fstab])])
AS_IF([test "x$with_config" != "xno"], [
AS_IF([test "x$conf" = "xyes"], [
conf=$sysconfdir/finit.conf])])
AC_EXPAND_DIR(conf_path, "$conf")
AC_DEFINE_UNQUOTED(FINIT_CONF, "$conf_path", [Main Finit configuration file, default /etc/finit.conf])
AC_SUBST(FINIT_CONF, "$conf_path")
AS_IF([test "x$with_rcsd" != "xno"], [
AS_IF([test "x$rcsd" = "xyes"], [
rcsd=$sysconfdir/finit.d])])
AC_EXPAND_DIR(rcsd_path, "$rcsd")
AC_DEFINE_UNQUOTED(FINIT_RCSD, "$rcsd_path", [Finit rcS.d/, default /etc/finit.d])
AC_SUBST(FINIT_RCSD, "$rcsd_path")
AS_IF([test "x$with_rc_local" != "xno"], [
AS_IF([test "x$rclocal" = "xyes"], [rclocal=$sysconfdir/rc.local])
AC_EXPAND_DIR(rclocal_path, "$rclocal")
AC_DEFINE_UNQUOTED(FINIT_RC_LOCAL, "$rclocal_path", [Compat SysV /etc/rc.local file to run last at boot.])])
AS_IF([test "x$with_sysconfig" != "xno"], [
AS_IF([test "x$sysconfig" != "xdefault"], [
AC_EXPAND_DIR(sysconfig_path, "$sysconfig")
AC_DEFINE_UNQUOTED(FINIT_SYSCONFIG, "$sysconfig_path",
[System environment, default /etc/default & /etc/conf.d])])])
AS_IF([test "x$with_heading" != "xno"], [
AS_IF([test "x$heading" = "xyes"], [heading=""])
AC_DEFINE_UNQUOTED(INIT_OSHEADING, "$heading", [Displayed by Finit at boot, defaults to /etc/os-release PRETTY_NAME])])
AS_IF([test "x$with_group" != "xno"], [
AS_IF([test "x$group" = "xyes"], [
group=root])])
AC_DEFINE_UNQUOTED(DEFGROUP, "$group", [For /run/finit/socket])
AS_IF([test "x$with_hostname" != "xno"], [
AS_IF([test "x$hostname" = "xyes"], [
hostname=noname])])
AC_DEFINE_UNQUOTED(DEFHOST, "$hostname", [For /etc/hostname])
AS_IF([test "x$with_runlevel" != "xno"], [
AS_IF([test "x$runlevel" = "xyes"], [
runlevel=2
AC_DEFINE_UNQUOTED(RUNLEVEL, $runlevel, [Default runlevel to start after S])])
AC_DEFINE_UNQUOTED(RUNLEVEL, $runlevel, [Runlevel to start after S])])
AS_IF([test "x$with_random_seed" != "xno"], [
AS_IF([test "x$random_seed" = "xyes"], [
random_seed=/var/lib/misc/random-seed])
AC_EXPAND_DIR(random_path, "$random_seed")
AC_DEFINE_UNQUOTED(RANDOMSEED, "$random_path", [Improve random at boot by seeding it with sth from before.])])
AS_IF([test "x$rtc_date" != "xno"], [
AC_DEFINE(RTC_TIMESTAMP_CUSTOM, "$rtc_date", [Custom RTC restore date, default: 2000-01-01 00:00])], [
rtc_date=""])
AS_IF([test "x$rtc_file" != "xno"], [
AS_IF([test "x$rtc_file" = "xyes"], [
rtc_file=/var/lib/misc/rtc])
AC_EXPAND_DIR(rtcfile_path, "$rtc_file")
AC_DEFINE_UNQUOTED(RTC_FILE, "$rtcfile_path", [Save and restore system time from this file if /dev/rtc is missing.])],[
AC_DEFINE_UNQUOTED(RTC_FILE, NULL)])
AS_IF([test "x$with_keventd" != "xno"], [with_keventd=yes])
AS_IF([test "x$with_sulogin" != "xno"], [
AS_IF([test "x$sulogin" = "xyes"], [
sulogin=root])
with_sulogin=yes
AC_DEFINE_UNQUOTED(SULOGIN_USER, "$sulogin", [Built-in sulogin user, default: root])], [
sulogin=])
AS_IF([test "x$with_watchdog" != "xno"], [
AS_IF([test "x$watchdog" = "xyes"], [
watchdog=/dev/watchdog])
with_watchdog=yes
AC_DEFINE_UNQUOTED(WDT_DEVNODE, "$watchdog", [Built-in watchdog device node])], [
watchdog=])
AS_IF([test "x$enable_hook_scripts_plugin" != "xno"], [
AS_IF([test "x$hook_scripts_path" = "xyes"], [hook_scripts_path=$libexecdir/finit/hook])
AC_EXPAND_DIR(hook_scripts_path, "$hook_scripts_path")
AC_DEFINE_UNQUOTED(PLUGIN_HOOK_SCRIPTS_PATH, "$hook_scripts_path", [Built-in default: $libexecdir/finit])])
AS_IF([test "x$with_plugin_path" != "xno"], [
AS_IF([test "x$plugin_path" = "xyes"], [plugin_path=/usr/lib/finit/plugins:/usr/local/lib/finit/plugins])
AC_EXPAND_DIR(plugin_path, "$plugin_path")
AC_DEFINE_UNQUOTED(EXTERNAL_PLUGIN_PATH, "$plugin_path", [Built-in default: /usr/lib/finit/plugins:/usr/local/lib/finit/plugins])])
# Control build with automake flags
AM_CONDITIONAL(BASH, [test "x$bash_dir" != "xno"])
AM_CONDITIONAL(STATIC, [test "x$enable_static" = "xyes"])
AM_CONDITIONAL(KEVENTD, [test "x$with_keventd" != "xno"])
AM_CONDITIONAL(SULOGIN, [test "x$with_sulogin" != "xno"])
AM_CONDITIONAL(WATCHDOGD, [test "x$with_watchdog" != "xno"])
AM_CONDITIONAL(DOC, [test "x$enable_doc" = "xyes"])
AM_CONDITIONAL(CONTRIB, [test "x$enable_contrib" = "xyes"])
AM_CONDITIONAL(TESTSERV, [test "x$enable_testserv_plugin" = "xyes"])
# Workaround for as-of-yet unreleased runstatedir support, planned for
# autoconf 2.70, which some major distros have backported.
AS_IF([test -z "$runstatedir"], runstatedir="$localstatedir/run")
AC_SUBST(runstatedir)
# Override default libdir, used for plugins and rescue.conf
pkglibdir=$libdir/finit
AC_SUBST(pkglibexecdir)
AC_EXPAND_DIR(pkglibexecdir, "$libexecdir/finit")
AC_DEFINE_UNQUOTED(FINIT_EXECPATH_, "$pkglibexecdir", [Finit libexec path])
AC_EXPAND_DIR(finit_runpath, "$runstatedir/finit/system")
AC_DEFINE_UNQUOTED(FINIT_RUNPATH_, "$finit_runpath", [Finit runtime dynamic system services])
AC_EXPAND_DIR(plugin_path, "$pkglibdir/plugins")
AC_SUBST(plugin_path)
AC_DEFINE_UNQUOTED(PLUGIN_PATH, "$plugin_path", [Finit plugin path])
AC_EXPAND_DIR(tmpfiles_path, "$libdir/tmpfiles.d")
AC_SUBST(tmpfiles_path)
AC_DEFINE_UNQUOTED(TMPFILES_PATH_, "$tmpfiles_path", [Main tmpfiles.d/, override in /etc])
AC_EXPAND_DIR(finit_tmpfiles, "$pkglibdir/tmpfiles.d")
AC_SUBST(finit_tmpfiles)
AC_DEFINE_UNQUOTED(FINIT_TMPFILES, "$finit_tmpfiles", [Finit tmpfiles.d/ .conf path])
AC_EXPAND_DIR(system_path, "$pkglibdir/system")
AC_SUBST(system_path)
AC_DEFINE_UNQUOTED(FINIT_SYSPATH_, "$system_path", [Static services, previously generated at runtime by plugins])
AC_EXPAND_DIR(rescue_conf, "$pkglibdir/rescue.conf")
AC_DEFINE_UNQUOTED(RESCUE_CONF, "$rescue_conf", [Finit rescue mode .conf])
AC_EXPAND_DIR(sample_conf, "$pkglibdir/sample.conf")
AC_DEFINE_UNQUOTED(SAMPLE_CONF, "$sample_conf", [Finit sameple.conf for initctl create])
AC_EXPAND_DIR(bash_completion_dir, "$BASH_DIR")
AC_SUBST(BASH_DIR, "$bash_completion_dir")
AS_IF([test "$heading" = ""], [heading="<DEFAULT>"])
AS_IF([test "$heading" = "no"], [heading="<NONE>"])
RTC_DATE=$rtc_date
AS_IF([test "$rtc_date" = ""], [RTC_DATE="<DEFAULT>"])
AS_IF([test "$rtc_date" = "no"], [RTC_DATE="<DEFAULT>"])
# Generate all files
AC_OUTPUT
cat <<EOF
------------------ Summary ------------------
$PACKAGE_NAME version $PACKAGE_VERSION
Prefix................: $(eval echo $prefix)
Exec prefix...........: $(eval echo $exec_prefix)
Libdir................: $(eval echo $libdir)
Sysconfdir............: `eval echo $sysconfdir`
Localstatedir.........: `eval echo $localstatedir`
Default fstab.........: `eval echo $fstab`
Finit config file.....: $conf_path
Finit config.d path...: $rcsd_path
Finit plugin path.....: $plugin_path
Compat rc.local path..: `eval echo $rclocal`
System environment....: ${sysconfig_path:-${sysconfig}}
Random seed path......: $random_path
C Compiler............: $CC $CFLAGS $CPPFLAGS $LDFLAGS $LIBS
Linker................: $LD $LLDP_LDFLAGS $LLDP_BIN_LDFLAGS $LDFLAGS $LIBS
Behavior:
Boot heading..........: $heading
Plugins...............: $plugins
RTC restore date......: $RTC_DATE
RTC fallback file.....: $rtc_file
Optional features:
Install doc/..........: $enable_doc
Install contrib/......: $enable_contrib
Bash completion.......: $bash_completion_dir
Built-in keventd......: $with_keventd
Built-in sulogin......: $with_sulogin $sulogin
Built-in watchdogd....: $with_watchdog $watchdog
Built-in logrotate....: $enable_logrotate
Use cgroup v2.........: $enable_cgroup
Parse kernel cmdline..: $enable_kernel_cmdline
Keep kernel logging...: $enable_kernel_logging
Skip fsck check.......: $enable_fastboot
Run fsck fix mode.....: $enable_fsckfix
Redirect output.......: $enable_redirect
Rescue mode...........: $enable_rescue
Default hostname......: $hostname
Default group.........: $group
Default runlevel......: $runlevel
------------- Compiler version --------------
$($CC --version || true)
-------------- Linker version ---------------
$($LD --version || true)
---------------------------------------------
Check the above options and compile with:
${MAKE-make}
EOF
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