Fix I/O plugin watcher, load plugins earlier to enable a new early hook!

Restructure start by calling the plugin loader earlier. This makes it
possible to run hooks even earlier.  This also adds a new hook:
HOOK_ROOTFS_UP which runs as soon as the system root (/) is available.

Another very notable change is the slow refactor of helpers.c into a finit
helper library called libite.so (-lite). This is a light-weight

Also, lots of misc. fixes all over the place. Signal handling still really
needs to be looked into once more!

Makefile:
        Add dependency handling for parallell build
        Add libite library

ChangeLog:
        Update with new 1.4 release. There is a lot of fixes!

libite/:
        Collection of utility functions and C library extensions for
        finit & its plugins

reboot.c:
        New reboot tool. Simply sends SIGINT to PID 1

finit.h:
        Cleanup old LISTEN_INITCTL define, code is in an optional plugin now

finit.c:
        Let mdev/udev run *after* cls()
        Add useful debug statement for /proc/cmdline
        Earlier plugin load => new early hook point
        Show OK/FAIL for total plugin load, not for each plugin => speedup

helpers.h:
        Rename syslog macros to prevent common name clashes (DEBUG/ERROR)
        Add __FILE__ to _e(), _d() and _pe() macros

helpers.c:
        In ifconfig() the addr and mask arguments are now optional
        The copyfile() has been moved to libite.so
        Temporarily remove const directive from some functions to build
        Use DFLSIG() macro in run_getty() to simplify code

plugin.h:
        Add new HOOK_ROOTFS_UP hook

plugin.c:
        Fix init_plugins() to actually register the plugin's I/O fd
        Skip verbose listing of all plugins in plugin_load_all()

svc.c:
        svc_start(): Dito

plugins/Makefile:
        Inherit CFLAGS and LDFLAGS, but make sure to filter out -rdynamic
        from LDFLAGS, it's used by the daemon, only

plugins/initctl.c:
        New includes after helpers.h refactor

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

ChangeLog

@@ -1,3 +1,31 @@
+1.4 (20121002)
+	- Fix I/O plugin watcher and load plugins earlier for a new hook
+	- Start refactoring helpers.c into a libite.so (-lite).  This
+	  means other user space applications/daemons can make use of
+	  the neat toolbox available in finit
+	- Use short-form -s/-w -u to work with BusyBox hwclock as well
+	- Use RTLD_GLOBAL flag to tell dynamic loader to load dependent
+	  .so files as well.  Lets other plugins use global symbols.
+	- Greatly simplify svc hook for external plugins and cleanup
+	  the plugin API.
+	- And more... see the GIT log for more details.
+
+1.3 (20120928)
+	- Cleanup public plugin API a bit and add new pid/pidfile funcs
+	- Add plugin hook to end of service startup
+	- Remove finit.h from svc.h, plugins should not need this.
+	- Move utility macros etc. to helpers.h
+	- Make finit.h daemon internal, only
+	- Move defines of FIFO, conf and rcS.d to Makefile => correct paths
+	- Add support for installing required headers in system include dir
+	- Better support for distributions and packagers with install-exec,
+	  install-data, and install-dev targets in Makefile.  Useful if you
+	  want to call targets with different $DESTDIR!
+	- Makefile fixes for installation, paths encoded wrong
+	- Strip binaries + .so files, support for $(CROSS) toolchain strip
+	- Default install is now to /sbin/finit and /usr/
+	- Note change in $PLUGIN_DIR environemnt variable to $plugindir
+
 1.2 (20120927)
 	- Fix installation paths encoded in finit binary
 	- Update README with section on building and enviroment variables

Makefile

@@ -1,4 +1,4 @@
-# finit - The Improved fast init
+# Finit - Extremely fast /sbin/init replacement w/ I/O, hook & service plugins
 #
 # Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
 # Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -21,73 +21,127 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-.PHONY: all romfs clean
+.PHONY: all install clean distclean dist		\
+	install-exec install-data install-dev		\
+	uninstall-exec uninstall-data uninstall-dev
 
 # Top directory for building complete system, fall back to this directory
-ROOTDIR    ?= $(shell pwd)
-
-# Installation paths, always prepended with DESTDIR if set
-prefix     ?= /usr/local
-sysconfdir ?= /etc
-datadir     = $(prefix)/share/doc/finit
-mandir      = $(prefix)/share/man/man8
-
-# Plugin directory, fall back to this directory if unset in environment
-PLUGIN_DIR ?= $(prefix)/lib/finit/plugins
+ROOTDIR     = $(shell pwd)
 
 #VERSION    ?= $(shell git tag -l | tail -1)
-VERSION    ?= 1.2
-EXEC        = finit
-PKG         = $(EXEC)-$(VERSION)
+VERSION    ?= 1.4
+NAME        = finit
+PKG         = $(NAME)-$(VERSION)
+DEV         = $(NAME)-dev
 ARCHIVE     = $(PKG).tar.xz
+EXEC        = finit reboot
+HEADERS     = plugin.h svc.h helpers.h
+DISTFILES   = LICENSE README ChangeLog finit.conf services
 OBJS        = finit.o conf.o helpers.o sig.o svc.o plugin.o
 OBJS       += strlcpy.o
 SRCS        = $(OBJS:.o=.c)
 DEPS        = $(addprefix .,$(SRCS:.c=.d))
+
+# Installation paths, always prepended with DESTDIR if set
+prefix     ?= /usr
+sysconfdir ?= /etc
+sbindir    ?= /sbin
+libdir     ?= /lib
+plugindir  ?= $(libdir)/finit/plugins
+incdir      = $(prefix)/include/finit
+datadir     = $(prefix)/share/doc/finit
+mandir      = $(prefix)/share/man/man8
+
+# The initctl FIFO, should probably be in /run, not /dev
+FINIT_FIFO ?= /dev/initctl
+FINIT_CONF ?= $(sysconfdir)/finit.conf
+FINIT_RCSD ?= $(sysconfdir)/finit.d
+
 CFLAGS     += -W -Wall -Werror -Os
 # Disable annoying gcc warning for "warn_unused_result", see GIT 37af997
 CPPFLAGS   += -U_FORTIFY_SOURCE
-CPPFLAGS   += -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE
+CPPFLAGS   += -Ilibite -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE
 CPPFLAGS   += -DVERSION=\"$(VERSION)\" -DWHOAMI=\"`whoami`@`hostname`\"
-CPPFLAGS   += -DPLUGIN_PATH=\"$(PLUGIN_DIR)\"
-LDFLAGS    += -rdynamic
-LDLIBS     += -ldl
+CPPFLAGS   += -DFINIT_FIFO=\"$(FINIT_FIFO)\" -DFINIT_CONF=\"$(FINIT_CONF)\"
+CPPFLAGS   += -DFINIT_RCSD=\"$(FINIT_RCSD)\" -DPLUGIN_PATH=\"$(plugindir)\"
+LDFLAGS    += -rdynamic -L$(ROOTDIR)/libite
+DEPLIBS     = libite/libite.so
+LDLIBS     += -ldl -lite
 
 include common.mk
-export PLUGIN_DIR ROOTDIR CPPFLAGS
+export libdir plugindir incdir ROOTDIR CPPFLAGS LDFLAGS LDLIBS
 
-all: Makefile $(EXEC)
+all: $(DEPLIBS) $(EXEC)
 	$(MAKE) -C plugins $@
 
+$(DEPLIBS): Makefile
+	$(MAKE) -C libite all
+
 $(OBJS): Makefile
 
-$(EXEC): $(OBJS)
+finit: $(OBJS) $(DEPLIBS)
 
-#	@ln -sf /sbin/finit /sbin/init
-install: all
-	@install -d $(DESTDIR)$(prefix)/sbin
-	@install -d $(DESTDIR)$(sysconfdir)
-	@install -d $(DESTDIR)$(datadir)
-	@install -d $(DESTDIR)$(mandir)
+reboot: reboot.o $(DEPLIBS)
+
+install-exec: all
+	@$(INSTALL) -d $(DESTDIR)$(FINIT_RCSD)
+	@$(INSTALL) -d $(DESTDIR)$(sbindir)
 	@for file in $(EXEC); do                                        \
-		printf "  INSTALL $(DESTDIR)$(prefix)/sbin/$$file\n";   \
-		install -m 0755 $$file $(DESTDIR)$(prefix)/sbin/$$file; \
+		printf "  INSTALL $(DESTDIR)$(sbindir)/$$file\n";   	\
+		$(STRIPINST) $$file $(DESTDIR)$(sbindir)/$$file; 	\
 	done
-	$(MAKE) -C plugins $@
+	$(MAKE) -C libite  install-exec
+	$(MAKE) -C plugins install
 
-uninstall:
-	-@for file in $(EXEC); do \
-		printf "  REMOVE  $(DESTDIR)$(prefix)/sbin/$$file\n";   \
-		rm $(DESTDIR)$(prefix)/sbin/$$file 2>/dev/null; \
+install-data:
+	@$(INSTALL) -d $(DESTDIR)$(datadir)
+	@$(INSTALL) -d $(DESTDIR)$(mandir)
+	@for file in $(DISTFILES); do	                                \
+		printf "  INSTALL $(DESTDIR)$(datadir)/$$file\n";	\
+		$(INSTALL) -m 0644 $$file $(DESTDIR)$(datadir)/$$file;	\
 	done
-	$(MAKE) -C plugins $@
+
+install-dev:
+	@$(INSTALL) -d $(DESTDIR)$(incdir)
+	@for file in $(HEADERS); do	                                \
+		printf "  INSTALL $(DESTDIR)$(incdir)/$$file\n";	\
+		$(INSTALL) -m 0644 $$file $(DESTDIR)$(incdir)/$$file;	\
+	done
+	$(MAKE) -C libite install-dev install-exec
+
+install: install-exec install-data install-dev
+
+uninstall-exec:
+	-@for file in $(EXEC); do 					\
+		printf "  REMOVE  $(DESTDIR)$(sbindir)/$$file\n";   	\
+		rm $(DESTDIR)$(sbindir)/$$file 2>/dev/null; 		\
+	done
+	-@rmdir $(DESTDIR)$(sbindir) 2>/dev/null
+	-@rmdir $(DESTDIR)$(FINIT_RCSD) 2>/dev/null
+	$(MAKE) -C libite  uninstall
+	$(MAKE) -C plugins uninstall
+
+uninstall-data:
+	@for file in $(DISTFILES); do	                                \
+		printf "  REMOVE  $(DESTDIR)$(datadir)/$$file\n";	\
+		rm $(DESTDIR)$(datadir)/$$file 2>/dev/null;		\
+	done
+	-@rmdir $(DESTDIR)$(mandir)
+	-@rmdir $(DESTDIR)$(datadir)
+
+uninstall-dev:
+	-@$(RM) -rf $(DESTDIR)$(incdir)
+
+uninstall: uninstall-exec uninstall-data uninstall-dev
 
 clean:
 	-@$(RM) $(OBJS) $(DEPS) $(EXEC)
+	$(MAKE) -C libite  $@
 	$(MAKE) -C plugins $@
 
 distclean: clean
-	-@$(RM) $(JUNK)  unittest *.o
+	-@$(RM) $(JUNK) unittest *.o .*.d
+	$(MAKE) -C libite  $@
 	$(MAKE) -C plugins $@
 
 dist:
@@ -95,6 +149,15 @@ dist:
 	git archive --format=tar --prefix=$(PKG)/ $(VERSION) | xz >../$(ARCHIVE)
 	@(cd ..; md5sum $(ARCHIVE) | tee $(ARCHIVE).md5)
 
+dev: distclean
+	@echo "Building unstable xz $(DEV) in parent dir..."
+	-@$(RM) -f ../$(DEV).tar.xz*
+	@(dir=`mktemp -d`; mkdir $$dir/$(DEV); cp -a . $$dir/$(DEV); \
+	  cd $$dir; tar --exclude=.git --exclude=contrib             \
+                        -c -J -f $(DEV).tar.xz $(DEV);               \
+	  cd - >/dev/null; mv $$dir/$(DEV).tar.xz ../; cd ..;        \
+	  rm -rf $$dir; md5sum $(DEV).tar.xz | tee $(DEV).tar.xz.md5)
+
 # Include automatically generated rules, such as:
 # uncgi.o: .../some/dir/uncgi.c /usr/include/stdio.h
 # but don't bother during clean!

README.rst

@@ -4,19 +4,17 @@
 
 Welcome to finit!
 
-This is a heavily extended version of the original /sbin/init replacement
-finit_.  The original was a reimplementation of the EeePC "fastinit" daemon
-based on its system calls with gaps filled with frog DNA.
+This is an extremely fast /sbin/init replacement with focus on small
+embedded GNU/Linux systems.  Based on Claudio Matsuoka's original finit_
+with I/O, service and hook plugin extensions.  The original was a
+reimplementation of the EeePC fastinit_ daemon based on its system
+calls with gaps filled with frog DNA.
 
-Focus of this extended version is on small embedded GNU/Linux systems and
-headless miniature servers with a need for extremely fast boot.  In such
-environments configurations rarely change and setup is rather static and
-straight forward.
+In the world of finit we write C plugins that hook into and extend the
+``main()`` loop of ``/sbin/init``, this is what gives the system its raw
+performance and the user full control.
 
-In the world of finit we write C "scripts" to boot our system, this is what
-gives the system its raw performance and the user full control.
-
-If you chose finit you know what you want, a fast boot with no hassle.
+If you chose finit you know what you want, a fast no hassles boot!
 
 
 Features
@@ -41,31 +39,35 @@ plugins with either hooks or I/O demands.
 /etc/finit.conf
 ---------------
 
-Contrary to most script based init alternatives (SysV init_, upstart_, OpenRC_
-and the likes) finit reads its configuration from /etc/finit.conf, see the
-source code for available options.
+Contrary to most script based init alternatives (`SysV init`_, upstart_,
+OpenRC_ and the likes) finit instead reads its configuration from
+``/etc/finit.conf``, see the source code for available options.
 
-Try out the examples/finit.conf for a Debian 6.0 example configuration
-capable of service monitoring SSH, sysklogd, gdm and a console getty!
+When running ``make install`` no default ``/etc/finit.conf`` will be
+provided since the system requirements differ too much.  Try out the
+Debian 6.0 example ``/usr/share/doc/finit/finit.conf`` configuration
+that is capable of service monitoring SSH, sysklogd, gdm and a console
+getty!
 
 
 /etc/finit.d
 ------------
 
-At the end of the boot, when networking and all services are up, finit calls
-its built-in run-parts(8) on the /etc/finit.d/ directory, akin to how the
-/ec/rc.local file works in most other inits, only finit runs a directory of
-scripts.  This replaces the earlier /usr/sbin/services.sh support of the
-original finit_.
+At the end of the boot, when networking and all services are up, finit
+calls its built-in run-parts(8) on the ``/etc/finit.d/`` directory, akin
+to how the ``/ec/rc.local`` file works in most other inits, only finit
+runs a directory of scripts.  This replaces the earlier
+``/usr/sbin/services.sh`` support of the original finit_.
 
 
 Rebooting and Halting
 ---------------------
 
 Finit handles SIGUSR1 and SIGUSR2 for reboot and halt, and listens to
-/dev/initctl so standard Linux reboot and halt commands should also
+``/dev/initctl`` so standard Linux reboot and halt commands should also
 work.
 
+
 Building
 --------
 
@@ -80,15 +82,8 @@ what is built and where resulting binaries are installed.
 **ROOTDIR=**
    Top directory for building complete system, used in pretty printing
 
-**PLUGINS=**
-   List of stock finit plugins to build and install.
-
-**PLUGIN_DIR=**
-   Absolute path to where finit should look for dynamically loadable plugins
-   at runtime. At installation prepended by ''DESTDIR'' and ''prefix''-
-
 **VERSION=**
-   Defaults to the currently released version of finit, e.g., 1.2 but can
+   Defaults to the currently released version of finit, e.g., 1.3 but can
    be overridden by packages to add a suffix or completely alter the version.
 
 **CFLAGS=**
@@ -104,24 +99,37 @@ what is built and where resulting binaries are installed.
    Standard LIBLIBS are inherited from the build enviornmant.
 
 **prefix=**
+   Base prefix path for all files, except ``sbinbdir`` and ``sysconfdir``.
+   Used in concert with the ``DESTDIR`` variable. Defaults to ``/usr``
+
+**sbindir=**
    Path to where resulting binaries should install to. Used in concert
-   with the ''DESTDIR'' variable. Defaults to /usr/local
+   with the ``DESTDIR`` variable. Defaults to ``/sbin``
 
 **sysconfdir=**
-   Used after ''prefix'' to create the path to finit.conf configuration
-   file. Defaults to /etc
+   Path to where finit configuration files should install to. Used in
+   concert with the ``DESTDIR`` variable.  Defaults to ``/etc``, but is
+   currently unused.
+
+**PLUGINS=**
+   List of stock finit plugins to build and install.
+
+**plugindir=**
+   Absolute path to where finit should look for dynamically loadable plugins
+   at runtime. At installation prepended by ``DESTDIR`` and ``prefix``.
+   Defaults to ``/lib/finit/plugins``
 
 **DESTDIR=**
    Used by packagers and distributions when building a relocatable
-   bundle of files. Alwawys prepended to the ''prefix'' destination
+   bundle of files. Alwawys prepended to the ``prefix`` destination
    directory.
 
 **Example**::
 
-  $ tar xfJ finit-1.2.tar.xz
-  $ PLUGINS="initctl.so hwclock.so" prefix= DESTDIR=/tmp/finit/dst \
-    make -C finit-1.2/ clean install
-  make: Entering directory `/home/troglobit/finit-1.2'
+  $ tar xfJ finit-1.3.tar.xz
+  $ PLUGINS="initctl.so hwclock.so" DESTDIR=/tmp/finit/dst \
+    make -C finit-1.3/ clean install
+  make: Entering directory `/home/troglobit/finit-1.3'
     CC      finit.o
     CC      conf.o
     CC      helpers.o
@@ -137,25 +145,42 @@ what is built and where resulting binaries are installed.
     INSTALL /tmp/finit/dst/sbin/finit
     INSTALL /tmp/finit/dst/lib/finit/plugins/initctl.so
     INSTALL /tmp/finit/dst/lib/finit/plugins/hwclock.so
-  make: Leaving directory `/home/troglobit/finit-1.2'
+  make: Leaving directory `/home/troglobit/finit-1.3'
 
-In this example the finit-1.2.tar.xz archive is unpacked to the user's
-home directory, built and installed to a temporary staging directory.
-The enviroment variables ''prefix'', ''DESTDIR'' and ''PLUGINS'' are all
+In this example the `finit-1.3.tar.xz`_ archive is unpacked to the
+user's home directory, built and installed to a temporary staging
+directory.  The enviroment variables ``DESTDIR`` and ``PLUGINS`` are
 changed to suit this particular build.
 
 
+Running
+-------
+
+The default install does not setup finit as the system default
+``/sbin/init``, neither does it setup an initial ``/etc/finit.conf``.
+
+It is assumed that users of finit are competent enough to either setup
+finit as their default ``/sbin/init`` or alter their respective Grub,
+LOADLIN, LILO, U-Boot/Barebox or RedBoot boot loader configuration to
+give the kernel the following extra command line::
+
+  init=/sbin/finit
+
+
 Debugging
 ---------
 
-Add finit_debug, or --debug, to the kernel command line to enable trace
-messages.  A console getty is always started, see the file finit.h for
-more useful comile-time tweaks.
+Add ``finit_debug``, or ``--debug``, to the kernel command line to
+enable trace messages.  A console getty is always started, see the file
+``finit.h`` for more useful comile-time tweaks::
+
+  init=/sbin/finit --debug
+
 
 Contact
 -------
 
-Finit is maintained collaborativly at https://github.com/troglobit/finit —
+Finit is maintained collaborativly at http://github.com/troglobit/finit —
 please file a bug report, clone it, or send pull requests for bug fixes and
 proposed extensions, or become a co-maintainer by contacting the main author.
 
@@ -163,7 +188,8 @@ Regards
  /Joachim Nilsson <troglobit@gmail.com>
 
 .. _finit: http://helllabs.org/finit/
-.. _init: http://savannah.nongnu.org/projects/sysvinit
+.. _fastinit: http://wiki.eeeuser.com/boot_process:the_boot_process
+.. _`SysV init`: http://savannah.nongnu.org/projects/sysvinit
 .. _upstart: http://upstart.ubuntu.com/
 .. _openrc: http://www.gentoo.org/proj/en/base/openrc/
-
+.. _`finit-1.3.tar.xz`: http://github.com/downloads/troglobit/finit/finit-1.3.tar.xz

TODO

@@ -3,3 +3,4 @@
 * Look at how to support a standard SysV init runlevel mechanism
 * Arguments to finit, like to SysV init "init q" to reload finit.conf at runtime, etc.
 * Implement initctl stop|start|reload <SVC> and service <SVC> stop|start|reload on top
+* Write man pages for finit and finit.conf, steal from pimd man pages...

common.mk

@@ -1,7 +1,9 @@
 # Some junk files we always want to be removed when doing a make clean.
 JUNK       = *~ *.bak *.aux *.dvi *.idx *.ind *.log *.ps *.map .*.d DEADJOE semantic.cache *.gdb *.elf core core.*
 MAKE      := @$(MAKE)
-MAKEFLAGS  = --no-print-directory
+MAKEFLAGS  = --no-print-directory --silent
+INSTALL   := install --backup=off
+STRIPINST := $(INSTALL) -s --strip-program=$(CROSS)strip -m 0755
 
 # Smart autodependecy generation via GCC -M.
 .%.d: %.c

finit.c

@@ -1,4 +1,4 @@
-/* Improved fast init
+/* Finit - Extremely fast /sbin/init replacement w/ I/O, hook & service plugins
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
  * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -49,6 +49,7 @@ static void parse_kernel_cmdline(void)
 
 	if ((fp = fopen("/proc/cmdline", "r")) != NULL) {
 		fgets(line, sizeof(line), fp);
+		_d("Kernel command line: %s", line);
 
 		if (strstr(line, "finit_debug") || strstr(line, "--debug"))
 			debug = 1;
@@ -64,7 +65,7 @@ static int run_loop(void)
 {
 	while (1) {
 		svc_monitor();
-		io_monitor();
+		plugin_monitor();
 	}
 
 	return 0;
@@ -91,15 +92,6 @@ int main(int UNUSED(args), char *argv[])
 	mount("none", "/dev/shm", "tmpfs", 0, NULL);
 	umask(022);
 
-	/*
-	 * Populate /dev and prepare for runtime events from kernel.
-	 */
-#if defined(USE_UDEV)
-	run_interactive("udevd --daemon", "Populating device tree");
-#elif defined (MDEV)
-	run_interactive(MDEV "-s", "Populating device tree");
-#endif
-
 	/*
 	 * Parse kernel parameters
 	 */
@@ -108,11 +100,28 @@ int main(int UNUSED(args), char *argv[])
 	cls();
 	echo("finit " VERSION " (built " __DATE__ " " __TIME__ " by " WHOAMI ")");
 
+	/*
+	 * Populate /dev and prepare for runtime events from kernel.
+	 */
+#if defined(USE_UDEV)
+	run_interactive("udevd --daemon", "Populating device tree");
+#elif defined (MDEV)
+	run_interactive(MDEV " -s", "Populating device tree");
+#endif
+
 	/*
 	 * Parse configuration file
 	 */
 	parse_finit_conf(FINIT_CONF);
 
+	/*
+	 * Load plugins.  Must run after finit.conf has registered
+	 * all services, or service plugins won't have anything to
+	 * hook on to.
+	 */
+	print_desc("", "Loading plugins");
+	print_result(plugin_load_all(PLUGIN_PATH));
+
 	/*
 	 * Mount filesystems
 	 */
@@ -124,6 +133,9 @@ int main(int UNUSED(args), char *argv[])
 #ifdef SYSROOT
 	run(SYSROOT, "/", NULL, MS_MOVE, NULL);
 #endif
+	_d("Root FS up, calling hooks ...");
+	plugin_run_hooks(HOOK_ROOTFS_UP);
+
 	umask(0);
 	run("/bin/mount -na");
 	run("/sbin/swapon -ea");
@@ -137,14 +149,8 @@ int main(int UNUSED(args), char *argv[])
 	 */
 	sig_setup();
 
-	/*
-	 * Load plugins and run first level hooks.
-	 */
-	_d("Loading plugins ...");
-	load_plugins(PLUGIN_PATH);
-
-	_d("Running first level hooks ...");
-	run_hooks(HOOK_BASEFS_UP);
+	_d("Base FS up, calling hooks ...");
+	plugin_run_hooks(HOOK_BASEFS_UP);
 
 	/*
 	 * Network stuff
@@ -164,7 +170,7 @@ int main(int UNUSED(args), char *argv[])
 	/*
 	 * Hooks that rely on loopback, or basic networking being up.
 	 */
-	run_hooks(HOOK_NETWORK_UP);
+	plugin_run_hooks(HOOK_NETWORK_UP);
 
 	/*
 	 * Start service monitor framework
@@ -181,7 +187,7 @@ int main(int UNUSED(args), char *argv[])
 	/*
 	 * Hooks that should run at the very end
 	 */
-	run_hooks(HOOK_SYSTEM_UP);
+	plugin_run_hooks(HOOK_SYSTEM_UP);
 
 	/* Start GETTY on console */
 	_d("Starting getty on console ...");

finit.h

@@ -1,4 +1,4 @@
-/* Improved fast init
+/* Finit - Extremely fast /sbin/init replacement w/ I/O, hook & service plugins
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
  * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -33,35 +33,18 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
-#include <syslog.h>
-#define DO_LOG(level, fmt, args...)				\
-{								\
-	openlog("finit", LOG_CONS | LOG_PID, LOG_DAEMON);	\
-	syslog(LOG_DEBUG, fmt, ##args);				\
-	closelog();						\
-}
-
-#define DEBUG(fmt, args...)  DO_LOG(LOG_DEBUG, fmt, ##args)
-#define ERROR(fmt, args...)  DO_LOG(LOG_CRIT, fmt, ##args)
-
-#define FINIT_FIFO "/dev/initctl"
-#define FINIT_CONF "/etc/finit.conf"
-#define FINIT_RCSD "/etc/finit.d"
-
 /* Distribution configuration */
 
 #if defined EMBEDDED_SYSTEM
 # define CONSOLE        "/dev/console"
 # define MDEV           "/sbin/mdev"
 # define GETTY          "/sbin/getty -L 115200 ttyS0 vt100"
-# define LISTEN_INITCTL
 #else /* Debian/Ubuntu based distributions */
 # define RANDOMSEED	"/var/lib/urandom/random-seed"
 # define CONSOLE        "/dev/tty1"
 # define GETTY		"/sbin/getty -8 38400 tty1"
 # define REMOUNT_ROOTFS_RW
 # define RUNLEVEL	2
-# define LISTEN_INITCTL
 # define USE_UDEV
 # define USE_MESSAGE_BUS
 #endif
@@ -79,42 +62,14 @@
 #define USERNAME_SIZE 16
 #define HOSTNAME_SIZE 32
 
-#ifndef touch
-# define touch(x) mknod((x), S_IFREG|0644, 0)
-#endif
-#ifndef chardev
-# define chardev(x,m,maj,min) mknod((x), S_IFCHR|(m), makedev((maj),(min)))
-#endif
-#ifndef blkdev
-# define blkdev(x,m,maj,min) mknod((x), S_IFBLK|(m), makedev((maj),(min)))
-#endif
-#ifndef fexist
-# define fexist(x) (access(x, F_OK) != -1)
-#endif
-
-#ifndef UNUSED
-#define UNUSED(x) UNUSED_ ## x __attribute__ ((unused))
-#endif
-
-#define echo(fmt, args...) do { if (1) { fprintf(stderr, fmt "\n",  ##args); } } while (0)
-#define _d(fmt, args...)   do { if (debug)   { fprintf(stderr, "finit:%s() - " fmt "\n", __func__, ##args); } } while (0)
-#define _e(fmt, args...)   do { fprintf(stderr, "finit:%s() - " fmt "\n", __func__, ##args); } while (0)
-#define _pe(fmt, args...)  do { fprintf(stderr, "finit:%s() - " fmt ". Error %d: %s\n", __func__, ##args, errno, strerror(errno)); } while (0)
-
-extern int   debug;
-extern int   verbose;
 extern char *sdown;
 extern char *network;
 extern char *hostname;
 extern char *username;
 
-/* strlcpy.c */
-size_t strlcpy(char *dst, const char *src, size_t siz);
-
 /* conf.c */
 void parse_finit_conf(char *file);
 
-
 #endif /* FINIT_H_ */
 
 /**

helpers.c

@@ -1,4 +1,4 @@
-/* Misc. utility functions and C-library extensions to simplify finit system setup.
+/* Misc. utility functions and C-library extensions for finit and its plugins
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
  * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -48,6 +48,7 @@
 #include "helpers.h"
 #include "private.h"
 #include "sig.h"
+#include "lite.h"
 
 #define NUM_ARGS    16
 #define NUM_SCRIPTS 128		/* ought to be enough for anyone */
@@ -56,23 +57,30 @@
  * Helpers to replace system() calls
  */
 
-int makepath(char *p)
+int makepath(char *path)
 {
-	char *x, path[PATH_MAX];
+	char buf[PATH_MAX];
+	char *x = buf;
 	int ret;
-	
-	x = path;
+
+	if (!path) {
+		errno = EINVAL;
+		return -1;
+	}
 
 	do {
-		do { *x++ = *p++; } while (*p && *p != '/');
+		do {
+			*x++ = *path++;
+		} while (*path && *path != '/');
+
 		*x = 0;
-		ret = mkdir(path, 0777);
-	} while (*p && (*p != '/' || *(p + 1))); /* ignore trailing slash */
+		ret = mkdir(buf, 0777);
+	} while (*path && (*path != '/' || *(path + 1))); /* ignore trailing slash */
 
 	return ret;
 }
 
-void ifconfig(char *name, char *inet, char *mask, int up)
+void ifconfig(char *ifname, char *addr, char *mask, int up)
 {
 	struct ifreq ifr;
 	struct sockaddr_in *a = (struct sockaddr_in *)&ifr.ifr_addr;
@@ -82,14 +90,18 @@ void ifconfig(char *name, char *inet, char *mask, int up)
 		return;
 
 	memset(&ifr, 0, sizeof (ifr));
-	strlcpy(ifr.ifr_name, name, IFNAMSIZ);
+	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 	ifr.ifr_addr.sa_family = AF_INET;
 
 	if (up) {
-		inet_aton(inet, &a->sin_addr);
-		ioctl(sock, SIOCSIFADDR, &ifr);
-		inet_aton(mask, &a->sin_addr);
-		ioctl(sock, SIOCSIFNETMASK, &ifr);
+		if (addr) {
+			inet_aton(addr, &a->sin_addr);
+			ioctl(sock, SIOCSIFADDR, &ifr);
+		}
+		if (mask) {
+			inet_aton(mask, &a->sin_addr);
+			ioctl(sock, SIOCSIFNETMASK, &ifr);
+		}
 	}
 
 	ioctl(sock, SIOCGIFFLAGS, &ifr);
@@ -105,30 +117,213 @@ void ifconfig(char *name, char *inet, char *mask, int up)
 }
 
 
-void copyfile(char *src, char *dst, int size)
+/**
+ * pidfile_read - Reads a PID value from a pidfile.
+ * @pidfile: File containing PID, usually in /var/run/<PROC>.pid
+ *
+ * This function takes a @pidfile and returns the PID found therein.
+ *
+ * Returns:
+ * On invalid @pidfile -1 and @errno set to %EINVAL, when @pidfile does not exist -1
+ * and errno set to %ENOENT.  When the pidfile is empty or when its contents cannot
+ * be translated this function returns zero (0), on success this function returns
+ * a PID value greater than one. PID 1 is reserved for the system init process.
+ */
+pid_t pidfile_read(char *pidfile)
 {
-	char buffer[BUF_SIZE];
-	int s, d, n;
+   pid_t pid = 0;
+   char buf[16];
+   FILE *fp;
 
-	/* Size == 0 means copy entire file */
-	if (size == 0)
-		size = INT_MAX;
+   if (!pidfile) {
+      errno = EINVAL;
+      return -1;
+   }
 
-	if ((s = open(src, O_RDONLY)) >= 0) {
-		if ((d = open(dst, O_WRONLY | O_CREAT, 0644)) >= 0) {
-			do {
-				int csize = size > BUF_SIZE ?  BUF_SIZE : size;
-		
-				if ((n = read(s, buffer, csize)) > 0)
-					write(d, buffer, n);
-				size -= csize;
-			} while (size > 0 && n == BUF_SIZE);
-			close(d);
-		}
-		close(s);
-	}
+   if (!fexist(pidfile))
+      return -1;
+
+   fp = fopen(pidfile, "r");
+   if (!fp)
+      return -1;
+
+   if (fgets(buf, sizeof(buf), fp)) {
+      errno = 0;
+      pid = strtoul(buf, NULL, 0);
+      if (errno)
+         pid = 0;               /* Failed conversion. */
+   }
+   fclose(fp);
+
+   return pid;
 }
 
+/**
+ * pidfile_poll - Poll for the existence of a pidfile and return PID
+ * @cmd:  Process name, or command, called to expect a pidfile
+ * @path: Path to pidfile to poll for
+ *
+ * This function polls for the pidfile at @path for at most 5 seconds
+ * before timing out. If the file is created within that time span the
+ * file is read and its PID contents returned.
+ *
+ * Returns:
+ * The PID read from @path, or zero on timeout.
+ */
+pid_t pidfile_poll(char *cmd, char *path)
+{
+	pid_t pid = 0;
+	int tries = 0;
+
+	/* Timeout = 100 * 50ms = 5s */
+	while (!fexist(path) && tries++ < 100) {
+		/* Wait 50ms between retries */
+		usleep(50000);
+	}
+
+	if (!fexist(path)) {
+		_e("Timeout! No PID found for %s, pidfile %s does not exist?", cmd, path);
+		pid = 0;
+	} else {
+		pid = pidfile_read(path);
+	}
+
+	return pid;
+}
+
+
+/**
+ * pid_alive - Check if a given process ID is running
+ * @pid: Process ID to check for.
+ *
+ * Returns:
+ * %TRUE(1) if pid is alive (/proc/pid exists), otherwise %FALSE(0)
+ */
+int pid_alive(pid_t pid)
+{
+	char name[24]; /* Enough for max pid_t */
+
+	snprintf(name, sizeof(name), "/proc/%d", pid);
+
+	return fexist(name);
+}
+
+
+/**
+ * pid_get_name - Find name of a process
+ * @pid:  PID of process to find.
+ * @name: Pointer to buffer where to return process name, may be %NULL
+ * @len:  Length in bytes of @name buffer.
+ *
+ * If @name is %NULL, or @len is zero the function will return
+ * a static string.  This may be useful to one-off calls.
+ *
+ * Returns:
+ * %NULL on error, otherwise a va
+ */
+char *pid_get_name(pid_t pid, char *name, size_t len)
+{
+	int ret = 1;
+	FILE *fp;
+	char path[32];
+	static char line[64];
+
+	if (!name || len == 0)
+		name = line;
+
+	snprintf(path, sizeof(path), "/proc/%d/status", pid);
+	if ((fp = fopen(path, "r")) != NULL) {
+		if (fgets(line, sizeof (line), fp)) {
+			char *pname = line + 6; /* Skip first part of line --> "Name:\t" */
+
+			chomp(pname);
+			strlcpy(name, pname, len);
+			ret = 0;		 /* Found it! */
+		}
+
+		fclose(fp);
+	}
+
+	if (ret)
+		return NULL;
+
+	return name;
+}
+
+
+/**
+ * procname_set - Change process name, as seen in process listnings
+ * @name: New name of process
+ * @args: The process' argv[] vector.
+ */
+void procname_set(char *name, char *args[])
+{
+	size_t len = strlen(args[0]) + 1; /* Include terminating '\0' */
+
+	prctl(PR_SET_NAME, name, 0, 0, 0);
+	memset(args[0], 0, len);
+	strlcpy(args[0], name, len);
+}
+
+/**
+ * procname_kill - Send a signal to a process group by name.
+ * @name: Name of process to send signal to.
+ * @signo: Signal to send.
+ *
+ * Send a signal to a running process (group). This function searches
+ * for a given process @name and sends a signal, @signo, to each
+ * process ID matching that @name.
+ *
+ * Returns:
+ * Number of signals sent, i.e. number of processes who have received the signal.
+ */
+int procname_kill (char *name, int signo)
+{
+	int result = 0;
+	char path[32], line[64];
+	FILE *fp;
+	DIR *dir;
+	struct dirent *entry;
+
+	dir = opendir("/proc");
+	if (!dir || !name) {
+		errno = EINVAL;
+		return 0;
+	}
+
+	while ((entry = readdir (dir)) != NULL) {
+		/* Skip non-process entries in /proc */
+		if (!isdigit (*entry->d_name))
+			continue;
+
+		snprintf (path, sizeof(path), "/proc/%s/status", entry->d_name);
+		/* Skip non-readable files (protected?) */
+		if ((fp = fopen (path, "r")) == NULL)
+			continue;
+
+		if (fgets (line, sizeof (line), fp)) {
+			char *pname = line + 6; /* Skip first part of line --> "Name:\t" */
+
+			if (strncmp(pname, name, strlen(pname) - 1) == 0) {
+				int error = errno;
+
+				if (kill(atoi(entry->d_name), signo)) {
+					FLOG_ERROR("Failed signalling(%d) %s: %s!", signo, name, strerror(error));
+				} else {
+					result++; /* Track number of processes we deliver the signal to. */
+				}
+			}
+		}
+
+		fclose(fp);
+	}
+
+	closedir(dir);
+
+	return result;
+}
+
+
 static int print_uptime(void)
 {
 #if defined(CONFIG_PRINTK_TIME)
@@ -150,7 +345,7 @@ static int print_uptime(void)
 	return 0;
 }
 
-void print_descr(char *action, char *descr)
+void print_desc(char *action, char *desc)
 {
 	const char home[] = "\r\e[K";
 	const char dots[] = " .....................................................................";
@@ -160,8 +355,8 @@ void print_descr(char *action, char *descr)
 	print_uptime();
 
 	write(STDERR_FILENO, action, strlen(action));
-	write(STDERR_FILENO, descr, strlen(descr));
-	write(STDERR_FILENO, dots, 60 - strlen(descr) - strlen(action)); /* pad with dots. */
+	write(STDERR_FILENO, desc, strlen(desc));
+	write(STDERR_FILENO, dots, 60 - strlen(desc) - strlen(action)); /* pad with dots. */
 }
 
 int print_result(int fail)
@@ -285,7 +480,7 @@ int run_interactive(char *cmd, char *fmt, ...)
 	vsnprintf(line, sizeof(line), fmt, ap);
 	va_end(ap);
 
-	print_descr("", line);
+	print_desc("", line);
 	if (fp && !debug) {
 		oldout = dup(STDOUT_FILENO);
 		olderr = dup(STDERR_FILENO);
@@ -333,21 +528,19 @@ pid_t run_getty(char *cmd, char *argv[])
 		if (open(CONSOLE, O_RDWR) != 0)
 			exit(1);
 
-		sigemptyset(&sa.sa_mask);
-		sa.sa_handler = SIG_DFL;
-
 		sigemptyset(&nmask);
 		sigaddset(&nmask, SIGCHLD);
 		sigprocmask(SIG_UNBLOCK, &nmask, NULL);
 
-		for (i = 1; i < NSIG; i++)
-			sigaction(i, &sa, NULL);
+		/* Reset signal handlers that were set by the parent process */
+                for (i = 1; i < NSIG; i++)
+			DFLSIG(sa, i, 0);
 
 		dup2(0, STDIN_FILENO);
 		dup2(0, STDOUT_FILENO);
 		dup2(0, STDERR_FILENO);
 
-		set_procname(argv, "console");
+		procname_set("console", argv);
 
 		while (!fexist(SYNC_SHUTDOWN)) {
 			static const char msg[] = "\nPlease press Enter to activate this console. ";
@@ -446,21 +639,21 @@ int run_parts(char *dir, ...)
 	return 0;
 }
 
-int getuser(char *s)
+int getuser(char *username)
 {
 	struct passwd *usr;
 
-	if (!s || (usr = getpwnam(s)) == NULL)
+	if (!username || (usr = getpwnam(username)) == NULL)
 		return -1;
 
 	return usr->pw_uid;
 }
 
-int getgroup(char *s)
+int getgroup(char *group)
 {
 	struct group *grp;
 
-	if ((grp = getgrnam(s)) == NULL)
+	if ((grp = getgrnam(group)) == NULL)
 		return -1;
 
 	return grp->gr_gid;
@@ -478,122 +671,14 @@ void cls(void)
 		fprintf (stderr, "%s", cls);
 }
 
-void chomp(char *s)
+void chomp(char *str)
 {
 	char *x;
 
-	if ((x = strchr((s), 0x0a)) != NULL)
+	if ((x = strchr((str), 0x0a)) != NULL)
 		*x = 0;
 }
 
-void set_procname(char *args[], char *name)
-{
-	size_t len = strlen(args[0]) + 1; /* Include terminating '\0' */
-
-	prctl(PR_SET_NAME, name, 0, 0, 0);
-	memset(args[0], 0, len);
-	strlcpy(args[0], name, len);
-}
-
-/**
- * get_pidname - Find name of a process
- * @pid:  PID of process to find.
- * @name: Pointer to buffer where to return process name, may be %NULL
- * @len:  Length in bytes of @name buffer.
- *
- * If @name is %NULL, or @len is zero the function will return
- * a static string.  This may be useful to one-off calls.
- *
- * Returns:
- * %NULL on error, otherwise a va
- */
-char *get_pidname(pid_t pid, char *name, size_t len)
-{
-	int ret = 1;
-	FILE *fp;
-	char path[32];
-	static char line[64];
-
-	if (!name || len == 0)
-		name = line;
-
-	snprintf(path, sizeof(path), "/proc/%d/status", pid);
-	if ((fp = fopen(path, "r")) != NULL) {
-		if (fgets(line, sizeof (line), fp)) {
-			char *pname = line + 6; /* Skip first part of line --> "Name:\t" */
-
-			chomp(pname);
-			strlcpy(name, pname, len);
-			ret = 0;		 /* Found it! */
-		}
-
-		fclose(fp);
-	}
-
-	if (ret)
-		return NULL;
-
-	return name;
-}
-
-/**
- * kill_procname - Send a signal to a process group by name.
- * @name: Name of process to send signal to.
- * @signo: Signal to send.
- *
- * Send a signal to a running process (group). This function searches
- * for a given process @name and sends a signal, @signo, to each
- * process ID matching that @name.
- *
- * Returns:
- * Number of signals sent, i.e. number of processes who have received the signal.
- */
-int kill_procname (const char *name, int signo)
-{
-	int result = 0;
-	char path[32], line[64];
-	FILE *fp;
-	DIR *dir;
-	struct dirent *entry;
-
-	dir = opendir("/proc");
-	if (!dir || !name) {
-		errno = EINVAL;
-		return 0;
-	}
-
-	while ((entry = readdir (dir)) != NULL) {
-		/* Skip non-process entries in /proc */
-		if (!isdigit (*entry->d_name))
-			continue;
-
-		snprintf (path, sizeof(path), "/proc/%s/status", entry->d_name);
-		/* Skip non-readable files (protected?) */
-		if ((fp = fopen (path, "r")) == NULL)
-			continue;
-
-		if (fgets (line, sizeof (line), fp)) {
-			char *pname = line + 6; /* Skip first part of line --> "Name:\t" */
-
-			if (strncmp(pname, name, strlen(pname) - 1) == 0) {
-				int error = errno;
-
-				if (kill(atoi(entry->d_name), signo)) {
-					ERROR("Failed signalling(%d) %s: %s!", signo, name, strerror(error));
-				} else {
-					result++; /* Track number of processes we deliver the signal to. */
-				}
-			}
-		}
-
-		fclose(fp);
-	}
-
-	closedir(dir);
-
-	return result;
-}
-
 void set_hostname(char *hostname)
 {
 	FILE *fp;

helpers.h

@@ -1,4 +1,4 @@
-/* Misc. utility functions and C-library extensions to simplify finit system setup.
+/* Misc. utility functions and C-library extensions for finit and its plugins
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
  * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -25,19 +25,62 @@
 #ifndef FINIT_HELPERS_H_
 #define FINIT_HELPERS_H_
 
-int	makepath	(char *);
-void	ifconfig	(char *, char *, char *, int);
-void	copyfile	(char *, char *, int);
-void    print_descr     (char *action, char *descr);
+#include <stdio.h>
+#include <syslog.h>
+
+#define DO_LOG(level, fmt, args...)				\
+{								\
+	openlog("finit", LOG_CONS | LOG_PID, LOG_DAEMON);	\
+	syslog(level, fmt, ##args);				\
+	closelog();						\
+}
+
+#define FLOG_DEBUG(fmt, args...)  DO_LOG(LOG_DEBUG, fmt, ##args)
+#define FLOG_ERROR(fmt, args...)  DO_LOG(LOG_CRIT, fmt, ##args)
+#define FLOG_PERROR(fmt, args...) DO_LOG(LOG_CRIT, fmt ". Error %d: %s", ##args, errno, strerror(errno))
+
+
+#ifndef touch
+# define touch(x) mknod((x), S_IFREG|0644, 0)
+#endif
+#ifndef chardev
+# define chardev(x,m,maj,min) mknod((x), S_IFCHR|(m), makedev((maj),(min)))
+#endif
+#ifndef blkdev
+# define blkdev(x,m,maj,min) mknod((x), S_IFBLK|(m), makedev((maj),(min)))
+#endif
+
+#ifndef UNUSED
+#define UNUSED(x) UNUSED_ ## x __attribute__ ((unused))
+#endif
+
+#define echo(fmt, args...) do { if (verbose) { fprintf(stderr,                    fmt "\n", ##args); } } while (0)
+#define   _d(fmt, args...) do { if (debug)   { fprintf(stderr, "finit:%s() - "    fmt "\n", __func__, ##args); } } while (0)
+#define   _e(fmt, args...) do {                fprintf(stderr, "finit:%s:%s() - " fmt "\n", __FILE__, __func__, ##args); } while (0)
+#define  _pe(fmt, args...) do {                fprintf(stderr, "finit:%s:%s() - " fmt ". Error %d: %s\n", __FILE__, __func__, ##args, errno, strerror(errno)); } while (0)
+
+extern int debug;
+extern int verbose;
+
+int	makepath	(char *path);
+void    ifconfig        (char *ifname, char *addr, char *mask, int up);
+
+pid_t   pidfile_read    (char *pidfile);
+pid_t   pidfile_poll    (char *cmd, char *path);
+
+int     pid_alive       (pid_t pid);
+char   *pid_get_name    (pid_t pid, char *name, size_t len);
+
+void    procname_set    (char *name, char *args[]);
+int     procname_kill   (char *name, int signo);
+
+void    print_desc     (char *action, char *desc);
 int     print_result    (int fail);
 int     start_process   (char *cmd, char *args[], int console);
 void    cls             (void);
-void	chomp		(char *);
-int     getuser         (char *);
-int	getgroup	(char *);
-void    set_procname    (char *args[], char *name);
-char   *get_pidname     (pid_t pid, char *name, size_t len);
-int     kill_procname   (const char *name, int signo);
+void	chomp		(char *str);
+int     getuser         (char *username);
+int	getgroup	(char *group);
 void    set_hostname    (char *hostname);
 
 int     run             (char *cmd);
@@ -45,6 +88,9 @@ int     run_interactive (char *cmd, char *fmt, ...);
 pid_t   run_getty       (char *cmd, char *argv[]);
 int	run_parts	(char *dir, ...);
 
+/* strlcpy.c */
+size_t strlcpy(char *dst, const char *src, size_t siz);
+
 #endif /* FINIT_HELPERS_H_ */
 
 /**

libite/Makefile

@@ -0,0 +1,79 @@
+# Finit libite -- Light-weight utility functions and C-library extensions
+# 
+# Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+.EXPORT_ALL_VARIABLES:
+.PHONY: all install clean
+
+include  ../common.mk
+
+CFLAGS     += -fPIC
+HEADERS     = lite.h
+OBJS       := copyfile.o dir.o fexist.o fisdir.o fmode.o rsync.o
+DEPS       := $(addprefix ., $(OBJS:.o=.d))
+
+VER         = 0
+LIBNAME     = libite
+TARGET      = $(LIBNAME).so
+VERLIB      = $(TARGET).$(VER)
+STATICLIB   = $(LIBNAME).a
+
+CHECK_FLAGS = $(CFLAGS) $(CPPFLAGS)
+
+all: $(TARGET)
+
+$(OBJS): Makefile
+
+$(TARGET): $(OBJS)
+	@printf "  LINK    %s\n" $@
+#	@$(AR) $(ARFLAGS) $(STATICLIB) $(OBJS)
+	@$(CC) $(LDFLAGS) -shared $(OBJS) -lrt -lcrypt -Wl,-soname,$@ -o $@
+	@ln -sf $@ $(VERLIB)
+
+install-exec: all
+	@install -d $(DESTDIR)$(libdir)
+	@echo "  INSTALL $(DESTDIR)$(libdir)/$(TARGET)"
+	@$(STRIPINST) $(TARGET) $(DESTDIR)$(libdir)/$(TARGET)
+	@ln -sf $(TARGET) $(DESTDIR)$(libdir)/$(VERLIB)
+
+install-dev:
+	@for file in $(HEADERS); do	                                \
+		printf "  INSTALL $(DESTDIR)$(incdir)/$$file\n";	\
+		$(INSTALL) -m 0644 $$file $(DESTDIR)$(incdir)/$$file;	\
+	done
+
+install: install-dev install-exec
+
+uninstall:
+	-@$(RM) $(DESTDIR)$(libdir)/$(VERLIB)
+	-@$(RM) $(DESTDIR)$(libdir)/$(TARGET)
+
+clean: uninstall
+	-@$(RM) $(OBJS) $(DEPS) $(TARGET) $(VERLIB) $(STATICLIB)
+
+distclean: clean
+	-@$(RM) $(JUNK) unittest *.o .*.d *.unittest
+
+ifneq ($(MAKECMDGOALS),clean)
+ifneq ($(MAKECMDGOALS),distclean)
+-include $(DEPS)
+endif
+endif

libite/copyfile.c

@@ -0,0 +1,317 @@
+/* Fastinit (finit) copyfile() implementation.
+ *
+ * Copyright (c) 2008 Claudio Matsuoka <http://helllabs.org/finit/>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h> /* MAX(), isset(), setbit(), TRUE, FALSE, et consortes. :-) */
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "lite.h"
+
+static int __isdir_and_append_filename(char *src, char **dst);
+
+/**
+ * copyfile - Copy a file to another.
+ * @src: Source file.
+ * @dst: Target file.
+ * @len: Number of bytes to copy, zero (0) for entire file.
+ *
+ * This is a C implementation of the command line cp(1) utility.  It is one
+ * of the classic missing links in the UNIX C library.  This version is from
+ * the finit project, http://helllabs.org/finit/, which is a reimplementation
+ * of fastinit for the Asus EeePC.
+ *
+ * Only some small changes to save stack space have been introduced.
+ *
+ * Returns:
+ * The number of bytes copied, zero may be error (check errno!), but it
+ * may also indicate that @src was empty. If @src is a directory errno
+ * will be set to %EISDIR since copyfile() is not recursive.
+ */
+ssize_t copyfile(char *src, char *dst, int len)
+{
+	char *buffer;
+	int s, d, n, isdir = 0, saved_errno = 0;
+	ssize_t size = 0;
+
+	errno = 0;		/* Reset before leaving this function. */
+//   fprintf (stderr, "%s() src: %s, dst: %s, len: %d\n", __func__, src, dst, len);
+
+	buffer = malloc(BUFSIZ);
+	if (!buffer)
+		return 0;
+
+	if (fisdir(src)) {
+		errno = EISDIR;	/* Error: source is a directory */
+		return 0;
+	}
+
+	/* Check if target is a directory, then append the src base filename. */
+	isdir = __isdir_and_append_filename(src, &dst);
+
+	/* Len == 0 means copy entire file */
+	if (len == 0) {
+		/* XXX: This feels a bit unsafe, but 2047 MiB may be sufficient for us.
+		 *       --Jocke 2008-08-11 */
+		len = INT_MAX;
+	}
+
+	if ((s = open(src, O_RDONLY)) >= 0) {
+		if ((d =
+		     open(dst, O_WRONLY | O_CREAT | O_TRUNC,
+			  fmode(src))) >= 0) {
+			do {
+				int clen = len > BUFSIZ ? BUFSIZ : len;
+
+				if ((n = read(s, buffer, clen)) > 0) {
+					size += write(d, buffer, n);
+				}
+				len -= clen;
+			}
+			while (len > 0 && n == BUFSIZ);
+
+			close(d);
+		} else {
+			saved_errno = errno;
+		}
+
+		close(s);
+	} else {
+		saved_errno = errno;
+	}
+
+	free(buffer);
+	if (isdir)
+		free(dst);
+	errno = saved_errno;
+
+	return size;
+}
+
+/**
+ * movefile - Move a file to another location
+ * @src: Source file.
+ * @dst: Target file, or location.
+ *
+ * This is a C implementation of the command line mv(1) utility.
+ * Usually the rename() API is sufficient, but not when moving across
+ * file system boundaries.
+ *
+ * The @src argument must include the full path to the source file,
+ * whereas the @dst argument may only be a directory, in which case the
+ * same file name from @src is used.
+ *
+ * Returns:
+ * POSIX OK(0), or non-zero with errno set.
+ */
+int movefile(char *src, char *dst)
+{
+	int isdir, result = 0;
+
+	/* Check if target is a directory, then append the src base filename. */
+	isdir = __isdir_and_append_filename(src, &dst);
+
+	if (rename(src, dst)) {
+		if (errno == EXDEV) {
+			errno = 0;
+			copyfile(src, dst, 0);
+			if (errno)
+				result = 1;
+			else
+				result = remove(src);
+		} else {
+			result = 1;
+		}
+	}
+
+	if (isdir)
+		free(dst);
+
+	return result;
+}
+
+/**
+ * copy_filep - Copy between FILE *fp.
+ * @src: Source FILE.
+ * @dst: Destination FILE.
+ *
+ * Function takes signals into account and will restart the syscalls as long
+ * as error is %EINTR.
+ *
+ * Returns:
+ * POSIX OK(0), or non-zero with errno set on error.
+ */
+int copy_filep(FILE *src, FILE *dst)
+{
+	int result = 0;
+	char *buf = (char *)malloc(BUFSIZ);
+
+	if (!src || !dst)
+		return EINVAL;
+
+	if (!buf)
+		return errno;
+
+	while (1) {
+		if (!fgets(buf, BUFSIZ, src)) {
+			if (errno == EINTR) {
+				clearerr(src);
+				continue;
+			}
+			if (feof(src))
+				break;
+
+			result = errno;
+			goto exit;
+		}
+		while (EOF == fputs(buf, dst)) {
+			if (errno == EINTR) {
+				clearerr(dst);
+				continue;
+			}
+
+			result = errno;
+			goto exit;
+		}
+	}
+
+ exit:
+	free(buf);
+	return errno = result;
+}
+
+/* Tests if dst is a directory, if so, reallocates dst and appends src filename returning 1 */
+static int __isdir_and_append_filename(char *src, char **dst)
+{
+	int isdir = 0;
+
+	if (fisdir(*dst)) {
+		int slash = 0;
+		char *tmp, *ptr = strrchr(src, '/');
+
+		if (!ptr)
+			ptr = src;
+		else
+			ptr++;
+
+//      fprintf (stderr, "Yes %s is a dir --> add %s\n", *dst, ptr);
+		tmp = malloc(strlen(*dst) + strlen(ptr) + 2);
+		if (!tmp) {
+			errno = EISDIR;
+			return 0;
+		}
+
+		isdir = 1;	/* Free dst before exit! */
+		slash = fisslashdir(*dst);
+
+		sprintf(tmp, "%s%s%s", *dst, slash ? "" : "/", ptr);
+		*dst = tmp;
+//      fprintf (stderr, "NEW DST:%s\n", *dst);
+	}
+
+	return isdir;
+}
+
+#ifdef UNITTEST
+#include <stdio.h>
+/* XXX: Make a real set of unit tests ... */
+#if 0
+int main(int argc, char *argv[])
+{
+	if (argc < 3) {
+		fprintf(stderr,
+			"Usage: %s <src> <dst>\nCopies the <src> file to the <dst> file.\n",
+			argv[0]);
+		return 1;
+	}
+
+	printf("Copying file %s to %s\n", argv[1], argv[2]);
+
+	return copyfile(argv[1], argv[2], 0);
+}
+#else
+int main(void)
+{
+	int i = 0;
+	char *files[] = {
+		"/etc/passwd", "/tmp/tok", "/tmp/tok",
+		"/etc/passwd", "/tmp/", "/tmp/passwd",
+		"/etc/passwd", "/tmp", "/tmp/passwd",
+		NULL
+	};
+	FILE *src, *dst;
+
+	fprintf(stderr, "\n=>Start testing copy_filep()\n");
+	while (files[i]) {
+		fprintf(stderr, "copy_filep(%s, %s)\t", files[i],
+			files[i + 1]);
+		src = fopen(files[i], "r");
+		dst = fopen(files[i + 1], "w");
+		if (copy_filep(src, dst))
+			perror("Failed");
+
+		if (src)
+			fclose(src);
+		if (dst)
+			fclose(dst);
+
+		if (fexist(files[i + 2]))
+			fprintf(stderr, "OK => %s\n", files[i + 2]);
+
+		remove(files[i + 2]);
+		i += 3;
+	}
+
+	printf("\n\n=>Start testing copyfile()\n");
+	i = 0;
+	while (files[i]) {
+		fprintf(stderr, "copyfile(%s, %s)\t", files[i], files[i + 1]);
+		if (!copyfile(files[i], files[i + 1], 0))
+			perror("Failed");
+
+		if (fexist(files[i + 2]))
+			fprintf(stderr, "OK => %s\n", files[i + 2]);
+
+		remove(files[i + 2]);
+		i += 3;
+	}
+
+	return 0;
+}
+#endif
+#endif				/* UNITTEST */
+
+/**
+ * Local Variables:
+ *  compile-command: "gcc -g -I../include -o unittest -DUNITTEST copyfile.c && ./unittest"
+ *  version-control: t
+ *  kept-new-versions: 2
+ *  c-file-style: "ellemtel"
+ * End:
+ */

libite/dir.c

@@ -0,0 +1,228 @@
+/* Functions for operating on files in directories.
+ *
+ * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
+ * 
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static const char *matcher_type = NULL;
+static int (*matcher_filter) (const char *file) = NULL;
+static int matcher(const struct dirent *entry)
+{
+	char *pos = strrchr(entry->d_name, '.');
+
+	if (matcher_filter && !matcher_filter(entry->d_name))
+		/* User matcher overrides the rest. */
+		return 0;
+
+	/* Skip current dir "." from list of files. */
+	if ((1 == strlen(entry->d_name) && entry->d_name[0] == '.') ||
+	    (2 == strlen(entry->d_name) && !strcmp(entry->d_name, "..")))
+		return 0;
+
+	/* filetype == "" */
+	if (matcher_type[0] == 0)
+		return 1;
+
+	/* Entry has no "." */
+	if (!pos)
+		return 0;
+
+	return !strcmp(pos, matcher_type);
+}
+
+/**
+ * dir - List all files of a certain type in the given directory.
+ * @dir:   Base directory for dir operation.
+ * @type:  File type suffix, e.g. ".cfg".
+ * @filter: Optional file name filter.
+ * @list:  Pointer to an array of file names.
+ * @strip: Flag, if set dir() strips the file type.
+ *
+ * This function returns a @list of files, matching the @type suffix,
+ * in the given directory @dir.
+ *
+ * The @list argument is a pointer to where to store the dynamically
+ * allocated list of file names.  This list should be free'd by first
+ * calling free() on each file name and then on the list itself.
+ *
+ * If @filter is not %NULL it will be called for each file found.  If
+ * @filter returns non-zero the @file argument will be included in the
+ * resulting @list.  If @filter returns zero for given @file it will
+ * be discarded.
+ *
+ * If the @strip flag is set the resulting @list of files has their
+ * file type stripped, including the dot.  So a match "config0.cfg"
+ * would be returned as "config0".
+ *
+ * Returns:
+ * Number of files in @list, zero if no matching files of @type.
+ */
+int dir(const char *dir, const char *type, int (*filter) (const char *file), char ***list, int strip)
+{
+	int i, n, num = 0;
+	char **files;
+	struct dirent **namelist;
+
+	assert(list);
+
+	if (!dir)
+		/* Assuming current directory */
+		dir = ".";
+	if (!type)
+		/* Assuming all files. */
+		type = "";
+
+	matcher_type = type;
+	matcher_filter = filter;
+	n = scandir(dir, &namelist, matcher, alphasort);
+	if (n < 0) {
+		perror("scandir");
+	} else {
+		files = (char **)malloc(n * sizeof(char *));
+		for (i = 0; i < n; i++) {
+			if (files) {
+				char *name = namelist[i]->d_name;
+				char *type = strrchr(name, '.');
+
+				if (type && strip)
+					*type = 0;
+
+				files[i] = strdup(name);
+				num++;
+			}
+			free(namelist[i]);
+		}
+		free(namelist);
+	}
+
+	if (num)
+		*list = files;
+
+	return num;
+}
+
+#ifdef UNITTEST
+#include <errno.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "otn/c.h"
+
+#define DIR_TYPE_IMAGE  ".img"
+#define DIR_TYPE_SYSLOG ""
+#define DIR_TYPE_CONFIG ".cfg"
+#define STARTUP_CONFIG  "startup-config.cfg"
+
+int simulate_files(int creat)
+{
+	int i;
+	char *files[] =
+	    { "config0.cfg", "config1.cfg", "config2.cfg", "config3.cfg",
+		"rr109.img", "rx100.img", "rx107.img", "rm957.img", "messages"
+	};
+
+	for (i = 0; i < ARRAY_ELEMENTS(files); i++) {
+		if (creat)
+			touch(files[i]);
+		else
+			remove(files[i]);
+	}
+
+	if (creat)
+		symlink("config2.cfg", STARTUP_CONFIG);
+	else
+		remove(STARTUP_CONFIG);
+
+	return 0;
+}
+
+static int cfg_dir_filter(const char *file)
+{
+	/* Skip the STARTUP_CONFIG file, it is a symbolic link to the
+	 * current startup configuration. */
+	return ! !strcmp(file, STARTUP_CONFIG);
+}
+
+int main(int argc, char *argv[])
+{
+	int i, num;
+	char *type = DIR_TYPE_CONFIG;
+	char **files;
+	int once = 1;
+
+	int is_startup_config(const char *entry) {
+		static char file[80];
+
+		if (once) {
+			int len = readlink(STARTUP_CONFIG, file, sizeof(file));
+
+			if (len == -1)
+				return 0;
+
+			file[len] = 0;
+			once = 0;	/* Only once per call to dir() */
+		}
+		//printf ("Comparing link %s with entry %s\n", file, entry);
+		return !strcmp(file, entry);
+	}
+
+	simulate_files(1);
+
+	if (argc >= 2) {
+		if (!strcasecmp("CONFIG", argv[1])) {
+			type = DIR_TYPE_CONFIG;
+			system("ls -l *" DIR_TYPE_CONFIG);
+		}
+		if (!strcasecmp("IMAGE", argv[1])) {
+			type = DIR_TYPE_IMAGE;
+			system("ls -l *" DIR_TYPE_IMAGE);
+		}
+		if (!strcasecmp("SYSLOG", argv[1])) {
+			type = DIR_TYPE_SYSLOG;
+			system("ls -l *");
+		}
+	}
+
+	num = dir(NULL, type, cfg_dir_filter, &files, 0);
+	if (num) {
+		for (i = 0; i < num; i++) {
+			printf("%s", files[i]);
+			if (is_startup_config(files[i]))
+				printf(" --> startup-config");
+			printf("\n");
+
+			free(files[i]);
+		}
+		free(files);
+	}
+
+	simulate_files(0);
+
+	return 0;
+}
+#endif				/* UNITTEST */
+
+/**
+ * Local Variables:
+ *  compile-command: "gcc -g -DUNITTEST -o unittest dir.c"
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

libite/fexist.c

@@ -0,0 +1,53 @@
+/* Check if file exists
+ *
+ * Copyright (c) 2008 Claudio Matsuoka <http://helllabs.org/finit/>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+
+/**
+ * fexist - Check if a file exists in the file system.
+ * @file: File to look for, with full path.
+ *
+ * Returns:
+ * %TRUE(1) if the file exists, otherwise %FALSE(0).
+ */
+int fexist(char *file)
+{
+	if (!file) {
+		errno = EINVAL;
+		return 0;	/* Doesn't exist ... */
+	}
+
+	if (-1 == access(file, F_OK))
+		return 0;
+
+	return 1;
+}
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

libite/fisdir.c

@@ -0,0 +1,51 @@
+/* Check if directory exists
+ *
+ * Copyright (c) 2008 Claudio Matsuoka <http://helllabs.org/finit/>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/**
+ * fexist - Check if a file exists and is a directory.
+ * @file: File to look for, with full path.
+ *
+ * Returns:
+ * %TRUE(1) if the file exists and is a directory, otherwise %FALSE(0).
+ */
+int fisdir(char *file)
+{
+	struct stat sb;
+
+	if (!stat(file, &sb) && S_ISDIR(sb.st_mode))
+		return 1;
+
+	return 0;
+}
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

libite/fmode.c

@@ -0,0 +1,57 @@
+/* File mode bit operations
+ *
+ * Copyright (c) 2008 Claudio Matsuoka <http://helllabs.org/finit/>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/**
+ * fmode - Return a file's mode bits.
+ * @file: File to look for, with full path.
+ *
+ * Returns:
+ * The mode bits or zero when @file does not exist and errno set to %ENOENT.
+ */
+mode_t fmode(char *file)
+{
+	struct stat sb;
+
+	if (!file) {
+		errno = EINVAL;
+		return 0;	/* Doesn't exist ... */
+	}
+
+	if (!stat(file, &sb))
+		return sb.st_mode;
+
+	return 0;
+}
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

libite/lite.h

@@ -0,0 +1,61 @@
+/* Collection of utility funcs and C library extensions for finit & its plugins
+ *
+ * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
+ * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef FINIT_LITE_H_
+#define FINIT_LITE_H_
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int     fexist     (char *file);
+int     fisdir     (char *file);
+mode_t  fmode      (char *file);
+
+ssize_t copyfile   (char *src, char *dst, int len);
+int     movefile   (char *src, char *dst);
+int     copy_filep (FILE *src, FILE *dst);
+
+int     dir        (const char *dir, const char *type, int (*filter) (const char *file), char ***list, int strip);
+int     rsync      (char *src, char *dst, int delete, int (*filter) (const char *file));
+
+static inline int fisslashdir(char *dir)
+{
+   if (!dir)             return 0;
+   if (strlen (dir) > 0) return dir[strlen (dir) - 1] == '/';
+                         return 0;
+}
+
+#endif /* FINIT_LITE_H_ */
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */
+

libite/rsync.c

@@ -0,0 +1,280 @@
+/* Micro "rsync" implementation.
+ *
+ * Copyright (c) 2011, 2012  Joachim Nilsson <troglobit@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <errno.h>
+#include <stdlib.h>	/* NULL, free() */
+#include <string.h>	/* strlen() */
+#include <strings.h>	/* rindex() */
+#include <stdio.h>
+#include <sys/param.h>	/* MAX(), isset(), setbit(), TRUE, FALSE, et consortes. :-) */
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "lite.h"
+#include "../helpers.h"
+
+static int makedir(char *buf, size_t buf_len, char *dir, char *name, mode_t mode);
+static int prune(char *dst, char **new_files, int new_num);
+
+
+/**
+ * rsync - Synchronize contents and optionally remove non-existing backups
+ * @src: Source directory
+ * @dst: Destination directory
+ * @delete: Prune files from @dst that no longer exist in @src.
+ * @filter: Optional filtering function for source directory.
+ *
+ * This is a miniature implementation of the famous rsync for local use only.
+ * In fact, it is not even a true rsync since it copies all files from @src
+ * to @dst.  The @delete option is useful for creating backups, when set all
+ * files removed from src since last backup are pruned from the destination
+ * (backup) directory.
+ *
+ * The filter callback, @filter, if provided, is used to determine what files to
+ * include from the source directory when backing up.  If a file is to be skipped
+ * the callback should simply return zero.
+ *
+ * Returns:
+ * POSIX OK(0), or non-zero with @errno set on error.
+ */
+int rsync(char *src, char *dst, int delete, int (*filter) (const char *file))
+{
+	char source[256];
+	char dest[256];
+	int i = 0, num = 0, result = 0;
+	char **files;		/* Array of file names. */
+
+	void copy(char *src, char *dst)
+	{
+		errno = 0;
+		copyfile(src, dst, 0);
+		if (errno) result++;
+	}
+
+	if (!fisdir(dst))
+		mkdir(dst, 0755);
+
+	if (!fisdir(src)) {
+		if (!fexist(src))
+			return 1;
+
+		copy(src, dst);
+		return errno;
+	}
+
+	/* Copy dir as well? */
+	if (!fisslashdir(src)) {
+		char *ptr = rindex(src, '/');
+
+		if (!ptr)
+			ptr = src;
+		else
+			ptr++;
+
+		if (makedir(dest, sizeof(dest), dst, ptr, fmode(src)))
+			return 1;
+		dst = dest;
+	}
+
+	num = dir(src, "", filter, &files, 0);
+	for (i = 0; i < num; i++) {
+		/* Recursively copy sub-directries */
+		snprintf(source, sizeof(source), "%s%s%s", src, fisslashdir(src) ? "" : "/", files[i]);
+		if (fisdir(source)) {
+			char dst2[256];
+
+			strcat(source, "/");
+			if (makedir (dst2, sizeof(dst2), dst, files[i], fmode(source))) {
+				result++;
+				continue;
+			}
+
+			rsync(source, dst2, delete, filter);
+			continue;	/* Next file/dir in @src to copy... */
+		}
+		copy(source, dst);
+	}
+
+	/* We ignore any errors from the pruning, that phase albeit useful is only
+	 * cosmetic. --Jocke 2011-03-24 */
+	if (delete)
+		prune(dst, files, num);
+
+	if (num) {
+		for (i = 0; i < num; i++)
+			free(files[i]);
+		free(files);
+	}
+
+	return result;
+}
+
+/* Creates dir/name @mode ... skipping / if dir already ends so. */
+static int makedir(char *buf, size_t buf_len, char *dir, char *name, mode_t mode)
+{
+	snprintf(buf, buf_len, "%s%s%s/", dir, fisslashdir(dir) ? "" : "/", name);
+	if (mkdir(buf, mode))
+		return 1;
+
+	return 0;
+}
+
+/* Prune old files, no longer existing on source, from destination directory. */
+static int prune(char *dst, char **new_files, int new_num)
+{
+	int i, num, result = 0;
+	char **files;
+
+	int find(char *file) {
+		int n;
+
+		for (n = 0; n < new_num; n++)
+			if (!strncmp (new_files[n], file, MAX(strlen(new_files[n]), strlen(file))))
+				return 1;
+
+		return 0;
+	}
+
+	num = dir(dst, "", NULL, &files, 0);
+	if (num) {
+		for (i = 0; i < num; i++) {
+			if (!find(files[i])) {
+				char *name;
+				size_t len = strlen(files[i]) + 2 + strlen(dst);
+
+				name = malloc(len);
+				if (name) {
+					snprintf(name, len, "%s%s%s", dst, fisslashdir(dst) ? "" : "/", files[i]);
+					if (remove(name))
+						result++;
+					free(name);
+				}
+			}
+			free(files[i]);
+		}
+		free(files);
+	}
+
+	return result;
+}
+
+#ifdef UNITTEST
+#define BASE "/tmp/.unittest/"
+#define SRC  BASE "src/"
+#define DST  BASE "dst/"
+
+char *files[] = {
+	SRC "sub1/1.tst",
+	SRC "sub1/2.tst",
+	SRC "sub1/3.tst",
+	SRC "sub2/4.tst",
+	SRC "sub2/5.tst",
+	SRC "sub2/6.tst",
+	SRC "sub3/7.tst",
+	SRC "sub3/8.tst",
+	SRC "sub3/9.tst",
+	NULL
+};
+
+void cleanup_test(void)
+{
+	system("rm -rf " BASE);
+}
+
+void setup_test(void)
+{
+	int i;
+	char cmd[256];
+	mode_t dir_modes[] = { 755, 700 };
+	mode_t file_modes[] = { 644, 600 };
+
+	cleanup_test();
+
+	mkdir(BASE, 0755);
+	mkdir(SRC, 0755);
+	mkdir(DST, 0755);
+
+	for (i = 0; files[i]; i++) {
+		snprintf(cmd, sizeof(cmd), "mkdir -m %d -p `dirname %s`",
+			 dir_modes[i % 2], files[i]);
+		system(cmd);
+
+		snprintf(cmd, sizeof(cmd), "touch %s; chmod %d %s", files[i],
+			 file_modes[i % 2], files[i]);
+		system(cmd);
+	}
+}
+
+int run_test()
+{
+#if 0
+	setup_test();
+	puts("Before:");
+	system("tree -np " BASE);
+
+	rsync(SRC, DST, 0, NULL);
+	puts("After:");
+	system("tree -np " BASE);
+	cleanup_test();
+#endif
+
+	setup_test();
+	rsync(BASE "src", DST, 0, NULL);
+	puts("Only partial rsync of src <-- No slash!");
+	system("tree -np " BASE);
+#if 0
+	cleanup_test();
+	setup_test();
+	rsync(BASE "src/sub1", BASE "dst", 0, NULL);
+	puts("Only partial rsync of src/sub1 <-- No slashes!!");
+	system("tree -np " BASE);
+
+	cleanup_test();
+	setup_test();
+	rsync(BASE "src/sub1/", DST, 0, NULL);
+	puts("Only partial rsync of src/sub1/");
+	system("tree -np " BASE);
+
+	cleanup_test();
+	setup_test();
+	rsync(BASE "src/sub1", DST, 0, NULL);
+	puts("Only partial rsync of src/sub1 <-- No slash!");
+	system("tree -np " BASE);
+
+	rsync("/etc", "/var/tmp", 0, NULL);
+	puts("Real life test:");
+	system("tree -np /var/tmp");
+#endif
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	atexit(cleanup_test);
+
+	return run_test();
+}
+#endif				/* UNITTEST */
+
+/**
+ * Local Variables:
+ *  compile-command: "make -f rsync.mk"
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

libite/rsync.mk

@@ -0,0 +1,22 @@
+# Unittest makefile for rsync.c
+.PHONY: clean
+
+SRC      = rsync.c
+OBJS     = dir.o copyfile.o fexist.o fisdir.o fmode.o
+UNIT     = rsync.unittest
+#CPPFLAGS = -DDEBUG -I../../.. -I../../include
+
+all: build run
+
+clean:
+	@rm -f $(OBJS) $(UNIT)
+
+# This rule also forces a cleanup of built objects to not leave any object files
+# lingering in the tree to interfere with cross builds.
+build: clean $(OBJS)
+	$(CC) $(CFLAGS) $(CPPFLAGS) -o $(UNIT) -DUNITTEST $(SRC) $(OBJS)
+	@rm -f $(OBJS)
+
+run:
+	@./$(UNIT)
+

plugin.c

@@ -32,7 +32,6 @@
 #include "private.h"
 #include "helpers.h"
 #include "plugin.h"
-#include "svc.h"
 
 #define is_io_plugin(p) ((p)->io.cb && (p)->io.fd >= 0)
 
@@ -42,7 +41,7 @@ static LIST_HEAD(, plugin) plugins = LIST_HEAD_INITIALIZER();
 
 int plugin_register(plugin_t *plugin)
 {
-	int inuse = 0;
+	int i, inuse = 0;
 
 	if (!plugin) {
 		errno = EINVAL;
@@ -69,17 +68,23 @@ int plugin_register(plugin_t *plugin)
 	}
 
 	if (plugin->svc.cb) {
-		svc_t *svc = svc_find_by_name(plugin->name);
+		svc_t *svc = svc_find(plugin->name);
 
 		if (svc) {
-			plugin->svc.id = svc_id(svc);
-			svc->plugin    = &plugin->svc;
 			inuse++;
+			svc->cb           = plugin->svc.cb;
+			svc->dynamic      = plugin->svc.dynamic;
+			svc->dynamic_stop = plugin->svc.dynamic_stop;
 		}
 	}
 
+	for (i = 0; i < HOOK_MAX_NUM; i++) {
+		if (plugin->hook[i].cb)
+			inuse++;
+	}
+
 	if (!inuse) {
-		_e("No service \"%s\" loaded, skipping plugin.", basename(plugin->name));
+		_d("No service \"%s\" loaded, and no I/O or finit hooks, skipping plugin.", basename(plugin->name));
 		return 1;
 	}
 
@@ -92,13 +97,22 @@ int plugin_unregister(plugin_t *plugin)
 {
 	LIST_REMOVE(plugin, link);
 
+	if (plugin->svc.cb) {
+		svc_t *svc = svc_find(plugin->name);
+
+		if (svc) {
+			svc->cb      = NULL;
+			svc->dynamic = 0;
+		}
+	}
+
 	/* XXX: Unfinished, add cleanup code here! */
 
 	return 0;
 }
 
 /* Private daemon API *******************************************************/
-void run_hooks(hook_point_t no)
+void plugin_run_hooks(hook_point_t no)
 {
 	plugin_t *p;
 
@@ -110,18 +124,6 @@ void run_hooks(hook_point_t no)
 	}
 }
 
-void run_services(void)
-{
-	plugin_t *p;
-
-	PLUGIN_ITERATOR(p) {
-		if (p->svc.cb) {
-			_d("Calling svc %s from runloop...", basename(p->name));
-			p->svc.cb(p->svc.arg, 0);
-		}
-	}
-}
-
 /* Generic libev I/O callback, looks up correct plugin and calls its callback */
 static void generic_io_cb(int fd, int events)
 {
@@ -137,7 +139,7 @@ static void generic_io_cb(int fd, int events)
 	}
 }
 
-void io_monitor(void)
+void plugin_monitor(void)
 {
 	int ret;
 	size_t i;
@@ -171,15 +173,16 @@ static void init_plugins(void)
 	PLUGIN_ITERATOR(p) {
 		if (is_io_plugin(p)) {
 			_d("Initializing plugin %s for I/O", basename(p->name));
-			fds[i].revents    = 0;
-			fds[i].events     = p->io.flags;
-			fds[num_fds++].fd = p->io.fd;
+			fds[i].revents = 0;
+			fds[i].events  = p->io.flags;
+			fds[i++].fd    = p->io.fd;
 		}
 	}
 }
 
-int load_plugins(char *path)
+int plugin_load_all(char *path)
 {
+	int fail = 0;
 	DIR *dp = opendir(path);
 	struct dirent *entry;
 
@@ -192,25 +195,28 @@ int load_plugins(char *path)
 		char *ext = entry->d_name + strlen(entry->d_name) - 3;
 
 		if (!strcmp(ext, ".so")) {
+			int result = 0;
 			void *handle;
-			char filename[1024];
+			char plugin[1024];
 
-			snprintf(filename, sizeof(filename), "%s/%s", path, entry->d_name);
-			print_descr("   Loading plugin ", basename(filename));
-			handle = dlopen(filename, RTLD_LAZY);
+			snprintf(plugin, sizeof(plugin), "%s/%s", path, entry->d_name);
+//			print_desc("   Loading plugin ", basename(plugin));
+			handle = dlopen(plugin, RTLD_LAZY | RTLD_GLOBAL);
 			if (!handle) {
-				_d("Failed loading plugin %s: %s", filename, dlerror());
-				print_result(1);
-				return 1;
+				_d("Failed loading plugin %s: %s", plugin, dlerror());
+				result = 1;
 			}
-			print_result(0);
+			if (result)
+				fail++;
+
+//			print_result(result);
 		}
 	}
 
 	closedir(dp);
 	init_plugins();
 
-	return 0;
+	return fail;
 }
 
 /**

plugin.h

@@ -26,6 +26,7 @@
 
 #include <poll.h>
 #include <sys/queue.h>		/* BSD sys/queue.h API */
+#include "svc.h"
 
 #define PLUGIN_IO_READ  POLLIN
 #define PLUGIN_IO_WRITE POLLOUT
@@ -39,9 +40,11 @@
  * Predefined hook points for easier plugin debugging 
  */
 typedef enum {
-	HOOK_BASEFS_UP = 0,
+	HOOK_ROOTFS_UP = 0,
+	HOOK_BASEFS_UP,
 	HOOK_NETWORK_UP,
 	HOOK_SYSTEM_UP,
+	HOOK_SVC_UP,
 	HOOK_SHUTDOWN,
 	HOOK_MAX_NUM
 } hook_point_t;
@@ -64,7 +67,8 @@ typedef enum {
  * The "dynamic events" discussed in the svc callback is for external
  * service plugins to implement.  However, it can be anything that 
  * can cause a service to need to SIGHUP at runtime.  E.g., acquiring
- * a DHCP lease, or an interface going UP/DOWN.
+ * a DHCP lease, or an interface going UP/DOWN. The event itself can
+ * be passed as an integer @event and any optional argument @event_arg
  *
  * It is up to the external service plugin to track these events and
  * relay them to each @dynamic service plugins' callback.  I.e., to
@@ -79,14 +83,10 @@ typedef struct plugin {
 	char *name;
 
 	/* Service callback to be called once per lap of runloop. */
-	struct plugin_svc {
-		/* Private */
-		int    id;       /* Service ID# to match this service plugin against, set on installation. */
-		/* Public */
-		void  *arg;	 /* Optional argument to callback func, set by plugin. */
-		int    dynamic;	 /* Reload (SIGHUP) on dynamic event?  Set by plugin. */
-		int    private;  /* For callbacks to use freely, possibly to store "states", set by plugin. */
-		int  (*cb)(void *arg, int event);
+	struct {
+		int dynamic;      /* Callback wants external events as well. */
+		int dynamic_stop; /* Callback allows dynamic events to stop. */
+		svc_cmd_t (*cb)(svc_t *svc, int event, void *event_arg);
 	} svc;
 
 	/* List of hook callbacks. */
@@ -103,9 +103,6 @@ typedef struct plugin {
 	} io;
 } plugin_t;
 
-/* Used by svc.h */
-typedef struct plugin_svc plugin_svc_t;
-
 /* Public plugin API */
 int plugin_register   (plugin_t *plugin);
 int plugin_unregister (plugin_t *plugin);

plugins/Makefile

@@ -1,7 +1,8 @@
 # Plugin based services architecture for finit -*-Makefile-*-
-CFLAGS      = -fPIC -g -Os
+CFLAGS     += -fPIC -Os
 CPPFLAGS   += -I..
-LDFLAGS     = -shared 
+LDFLAGS    := $(filter-out -rdynamic, $(LDFLAGS))
+LDFLAGS    += -shared
 PLUGINS    ?= initctl.so alsa-utils.so bootmisc.so dbus.so hwclock.so \
 	      resolvconf.so urandom.so x11-common.so
 DEPS        = $(addprefix .,$(PLUGINS:.so=.d))
@@ -17,18 +18,18 @@ distclean: clean
 	-@$(RM) $(JUNK) $(DEPS)
 
 install: all
-	@install -d $(DESTDIR)$(prefix)$(PLUGIN_DIR)
+	@install -d $(DESTDIR)$(plugindir)
 	@for plugin in $(PLUGINS); do \
-		echo "  INSTALL $(DESTDIR)$(prefix)$(PLUGIN_DIR)/$$plugin"; \
-		cp $$plugin $(DESTDIR)$(prefix)$(PLUGIN_DIR); \
+		echo "  INSTALL $(DESTDIR)$(plugindir)/$$plugin";	\
+		$(STRIPINST) $$plugin $(DESTDIR)$(plugindir)/$$plugin;	\
 	done
 
 uninstall:
 	-@for plugin in $(PLUGINS); do \
-		echo "  RM      $(PLUGIN_DIR)/$$plugin"; \
-		rm $(DESTDIR)$(prefix)$(PLUGIN_DIR)/$$plugin 2>/dev/null; \
+		echo "  RM      $(DESTDIR)$(plugindir)/$$plugin";	\
+		rm $(DESTDIR)$(plugindir)/$$plugin 2>/dev/null; 	\
 	done
-	-@rmdir $(DESTDIR)$(prefix)$(PLUGIN_DIR) 2>/dev/null
+	-@rmdir $(DESTDIR)$(plugindir) 2>/dev/null
 
 ifneq ($(MAKECMDGOALS),clean)
  -include $(DEPS)

plugins/hwclock.c

@@ -28,13 +28,15 @@
 static void save(void *UNUSED(arg))
 {
 	_d("Saving system clock to RTC ...");
-	run_interactive("/sbin/hwclock --systohc --utc", "Saving system time (UTC) to RTC");
+	/* -w,--systohc, -u,--utc */
+	run_interactive("/sbin/hwclock -w -u", "Saving system time (UTC) to RTC");
 }
 
 static void restore(void *UNUSED(arg))
 {
 	_d("Restoring system clock from RTC ...");
-	run_interactive("/sbin/hwclock --hctosys --utc", "Restoring system clock (UTC) from RTC");
+	/* -s,--hctosys, -u,--utc */
+	run_interactive("/sbin/hwclock -s -u", "Restoring system clock (UTC) from RTC");
 }
 
 static plugin_t plugin = {

plugins/initctl.c

@@ -23,11 +23,14 @@
  */
 
 #include <errno.h>
+#include <fcntl.h>		/* O_RDONLY et al */
 #include <signal.h>
 #include <string.h>
+#include <unistd.h>		/* read() */
 
-#include "finit.h"
+#include "helpers.h"
 #include "plugin.h"
+#include "sig.h"
 
 #define INIT_MAGIC		0x03091969
 #define INIT_CMD_RUNLVL		1
@@ -40,7 +43,6 @@ struct init_request {
 	char	data[368];
 };
 
-#ifdef LISTEN_INITCTL
 /* Standard reboot/shutdown utilities talk to init using /dev/initctl.
  * We should check if the fifo was recreated and reopen it.
  */
@@ -109,8 +111,6 @@ PLUGIN_EXIT(plugin_exit)
 	plugin_unregister(&plugin);
 }
 
-#endif  /* LISTEN_INITCTL */
-
 /**
  * Local Variables:
  *  version-control: t

private.h

@@ -25,13 +25,15 @@
 #ifndef FINIT_PRIVATE_H_
 #define FINIT_PRIVATE_H_
 
+#include "svc.h"
 #include "plugin.h"
 
-/* plugin.c */
-void run_hooks        (hook_point_t no);
-void run_services     (void);
-int  load_plugins     (char *path);
-void io_monitor       (void);
+void      svc_start_all    (void);
+void      svc_monitor      (void);
+
+void      plugin_run_hooks (hook_point_t no);
+int       plugin_load_all  (char *path);
+void      plugin_monitor   (void);
 
 #endif /* FINIT_PRIVATE_H_ */
 

reboot.c

@@ -0,0 +1,37 @@
+/* reboot for finit
+ *
+ * Copyright (c) 2009-2012  Joachim Nilsson <troglobit@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <signal.h>
+
+int main (void)
+{
+        return !!kill(1, SIGINT);
+}
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

sig.c

@@ -62,7 +62,7 @@ void do_shutdown (int sig)
 
 	sleep(1);
 	/* Call all shutdown hooks, this is the last call before rebooting... */
-	run_hooks(HOOK_SHUTDOWN);
+	plugin_run_hooks(HOOK_SHUTDOWN);
 
 	_d("Sending SIGKILL to remaining processes.");
 	kill(-1, SIGKILL);
@@ -87,7 +87,7 @@ void do_shutdown (int sig)
 static void shutdown_handler(int sig, siginfo_t *info, void *UNUSED(ctx))
 {
 	_d("Rebooting on signal %d from %s (PID %d)",
-	   sig, get_pidname(info->si_pid, NULL, 0), info->si_pid);
+	   sig, pid_get_name(info->si_pid, NULL, 0), info->si_pid);
 
 	do_shutdown(sig);
 }
@@ -106,14 +106,14 @@ static void chld_handler(int UNUSED(sig), siginfo_t *UNUSED(info), void *UNUSED(
 static void sigstop_handler(int sig, siginfo_t *info, void *UNUSED(ctx))
 {
 	_d("Received SIGSTOP(%d) from %s (PID %d)",
-	   sig, get_pidname(info->si_pid, NULL, 0), info->si_pid);
+	   sig, pid_get_name(info->si_pid, NULL, 0), info->si_pid);
 	touch(SYNC_STOPPED);
 	stopped ++;
 }
 static void sigcont_handler(int sig, siginfo_t *info, void *UNUSED(ctx))
 {
 	_d("Received SIGCONT(%d) from %s (PID %d)",
-	   sig, get_pidname(info->si_pid, NULL, 0), info->si_pid);
+	   sig, pid_get_name(info->si_pid, NULL, 0), info->si_pid);
 	stopped = 0;
 	remove(SYNC_STOPPED);
 }

svc.c

@@ -1,4 +1,4 @@
-/* Generic API for managing svc_t structures
+/* Finit service monitor and heneric API for managing svc_t structures
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
  * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -29,6 +29,7 @@
 #include "helpers.h"
 #include "private.h"
 #include "sig.h"
+#include "lite.h"
 #include "svc.h"
 
 /* The registered services are kept in shared memory for easy read-only access
@@ -46,7 +47,7 @@ static void __connect_shm(void)
 		if (!services) {
 			/* This should never happen, but if it does we're probably
 			 * knee-deep in more serious problems already... */
-			_e("Failed setting up shared memory for service monitor.\n");
+			_e("Failed allocating shared memory, error %d: %s", errno, strerror (errno));
 			abort();
 		}
 	}
@@ -64,9 +65,8 @@ svc_t *svc_new(void)
 
 	__connect_shm();
 	if (svc_counter < MAX_NUM_SVC) {
-		svc = &services[svc_counter];
+		svc = &services[svc_counter++];
 		memset(svc, 0, sizeof(*svc));
-		svc->id = svc_counter++;
 	} else {
 		errno = ENOMEM;
 		return NULL;
@@ -76,29 +76,13 @@ svc_t *svc_new(void)
 }
 
 /**
- * svc_find_by_id - Find a service object by its logical ID#
- * @id: Logical ID#
- *
- * Returns:
- * A pointer to an &svc_t object, or %NULL if not found.
- */
-svc_t *svc_find_by_id(int id)
-{
-	__connect_shm();
-	if (id >= svc_counter)
-		return NULL;
-
-	return &services[id];
-}
-
-/**
- * svc_find_by_name - Find a service object by its full path name
+ * svc_find - Find a service object by its full path name
  * @name: Full path name, e.g., /sbin/syslogd
  *
  * Returns:
  * A pointer to an &svc_t object, or %NULL if not found.
  */
-svc_t *svc_find_by_name(char *name)
+svc_t *svc_find(char *name)
 {
 	int i;
 
@@ -125,16 +109,16 @@ svc_t *svc_find_by_name(char *name)
  */
 svc_t *svc_iterator(int restart)
 {
-	static int id = 0;
+	static int i = 0;
 
 	__connect_shm();
 	if (restart)
-		id = 0;
+		i = 0;
 
-	if (id >= svc_counter)
+	if (i >= svc_counter)
 		return NULL;
 
-	return &services[id++];
+	return &services[i++];
 }
 
 /**
@@ -156,7 +140,7 @@ svc_t *svc_iterator(int restart)
 int svc_register(char *line, char *username)
 {
 	int i = 0;
-	char *cmd, *descr;
+	char *cmd, *desc;
 	svc_t *svc;
 
 	if (!line) {
@@ -164,9 +148,9 @@ int svc_register(char *line, char *username)
 		return errno = EINVAL;
 	}
 
-	descr = strstr(line, "-- ");
-	if (descr)
-		*descr = 0;
+	desc = strstr(line, "-- ");
+	if (desc)
+		*desc = 0;
 
 	cmd = strtok(line, " ");
 	if (!cmd) {
@@ -190,8 +174,8 @@ int svc_register(char *line, char *username)
 		return errno = ENOMEM;
 	}
 
-	if (descr)
-		strlcpy(svc->descr, descr + 3, sizeof(svc->descr));
+	if (desc)
+		strlcpy(svc->desc, desc + 3, sizeof(svc->desc));
 	if (username)
 		strlcpy(svc->username, username, sizeof(svc->username));
 	strlcpy(svc->cmd, cmd, sizeof(svc->cmd));
@@ -207,8 +191,9 @@ int svc_register(char *line, char *username)
 
 /**
  * svc_enabled - Should the service run?
- * @svc: Pointer to &svc_t object
- * @dynamic: Dynamic event, opaque flag passed to callback
+ * @svc:   Pointer to &svc_t object
+ * @event: Dynamic event, opaque flag passed to callback
+ * @arg:   Event argument, used only by external service plugins.
  *
  * This method calls an associated service callback, if registered by a
  * plugin, and returns the &svc_cmd_t status. If no plugin is registered
@@ -218,19 +203,19 @@ int svc_register(char *line, char *username)
  * Returns:
  * Either one of %SVC_START, %SVC_STOP, %SVC_RELOAD.
  */
-svc_cmd_t svc_enabled(svc_t *svc, int dynamic)
+svc_cmd_t svc_enabled(svc_t *svc, int event, void *arg)
 {
 	if (!svc) {
 		errno = EINVAL;
 		return SVC_STOP;
 	}
 
-	if (!svc->plugin) {
-		/* Unknown service, default to enabled. */
-		return SVC_START;
-	}
+	/* Is there a service plugin registered? */
+	if (svc->cb)
+		return svc->cb(svc, event, arg);
 
-	return svc->plugin->cb(svc, dynamic);
+	/* No service plugin, default to start, since listed in finit.conf */
+	return SVC_START;
 }
 
 static int is_norespawn(void)
@@ -270,20 +255,22 @@ void svc_monitor(void)
 
 		/* Cleanup any lingering or semi-restarting tasks before respawning */
 		_d("Sending SIGTERM to service group %s", name);
-		kill_procname(name, SIGTERM);
+		procname_kill(name, SIGTERM);
 
 		/* Restarting lost service. */
-		if (svc_enabled(svc, 0))
+		if (svc_enabled(svc, 0, NULL))
 			svc_start(svc);
 
 		break;
 	}
 }
 
+/* Remember: svc_enabled() must be called before calling svc_start() */
 int svc_start(svc_t *svc)
 {
 	int respawn = svc->pid != 0;
 	pid_t pid;
+        sigset_t nmask, omask;
 	char *args[MAX_NUM_SVC_ARGS];
 
 	/* Ignore if finit is SIGSTOP'ed */
@@ -291,14 +278,24 @@ int svc_start(svc_t *svc)
 		return 0;
 
 	if (!respawn)
-		print_descr("Starting ", svc->descr);
+		print_desc("Starting ", svc->desc);
+
+        /* Block sigchild while forking.  */
+        sigemptyset(&nmask);
+        sigaddset(&nmask, SIGCHLD);
+        sigprocmask(SIG_BLOCK, &nmask, &omask);
 
 	pid = fork();
+        sigprocmask(SIG_SETMASK, &omask, NULL);
 	if (pid == 0) {
 		int i = 0;
 		int uid = getuser(svc->username);
 		struct sigaction sa;
 
+                sigemptyset(&nmask);
+                sigaddset(&nmask, SIGCHLD);
+                sigprocmask(SIG_UNBLOCK, &nmask, NULL);
+
 		/* Reset signal handlers that were set by the parent process */
                 for (i = 1; i < NSIG; i++)
 			DFLSIG(sa, i, 0);
@@ -313,16 +310,23 @@ int svc_start(svc_t *svc)
 		args[i] = NULL;
 
 		if (debug) {
-			int fd = open (CONSOLE, O_WRONLY | O_APPEND);
+			int fd;
+			char buf[256] = "";
+
+			fd = open (CONSOLE, O_WRONLY | O_APPEND);
 			if (-1 != fd) {
 				dup2(STDOUT_FILENO, fd);
 				dup2(STDERR_FILENO, fd);
 			}
 
-			_e("%starting %s ", respawn ? "Res" : "S", svc->cmd);
-			for (i = 0; args[i] && i < MAX_NUM_SVC_ARGS; i++)
-				_e("%s ", args[i]);
-			_e("");
+			for (i = 0; args[i] && i < MAX_NUM_SVC_ARGS; i++) {
+				char arg[MAX_ARG_LEN];
+
+				snprintf(arg, sizeof(arg), "%s ", args[i]);
+				if ((sizeof(buf) - strlen(buf)) < strlen(arg))
+					strcat(buf, arg);
+			}
+			_e("%starting %s: %s", respawn ? "Res" : "S", svc->cmd, buf);
 		}
 
 		execvp(svc->cmd, args);
@@ -338,9 +342,9 @@ int svc_start(svc_t *svc)
 
 int svc_start_by_name(char *name)
 {
-	svc_t *svc = svc_find_by_name(name);
+	svc_t *svc = svc_find(name);
 
-	if (svc && svc_enabled(svc, 0))
+	if (svc && svc_enabled(svc, 0, NULL))
 		return svc_start(svc);
 
 	return 1;
@@ -356,13 +360,13 @@ int svc_stop(svc_t *svc)
 	}
 
 	if (svc->pid <= 1) {
-		_d("Bad PID %d for %s, SIGTERM", svc->pid, svc->descr);
+		_d("Bad PID %d for %s, SIGTERM", svc->pid, svc->desc);
 		svc->pid = 0;
 		return 1;
 	}
 
-	print_descr("Stopping ", svc->descr);
-	_d("Sending SIGTERM to pid:%d name:'%s'", svc->pid, get_pidname(svc->pid, NULL, 0));
+	print_desc("Stopping ", svc->desc);
+	_d("Sending SIGTERM to pid:%d name:'%s'", svc->pid, pid_get_name(svc->pid, NULL, 0));
 	res = kill(svc->pid, SIGTERM);
 	print_result(res);
 	svc->pid = 0;
@@ -372,6 +376,10 @@ int svc_stop(svc_t *svc)
 
 int svc_reload(svc_t *svc)
 {
+	/* Ignore if finit is SIGSTOP'ed */
+	if (is_norespawn())
+		return 0;
+
 	if (!svc) {
 		_e("Failed, no svc pointer.");
 		return 1;
@@ -393,14 +401,15 @@ void svc_start_all(void)
 	svc_cmd_t cmd;
 
 	for (svc = svc_iterator(1); svc; svc = svc_iterator(0)) {
-		cmd = svc_enabled(svc, 0);
-		if (cmd == SVC_START || (cmd == SVC_RELOAD && svc->pid == 0))
+		cmd = svc_enabled(svc, 0, NULL);
+		if (SVC_START == cmd  || (SVC_RELOAD == cmd && svc->pid == 0))
 			svc_start(svc);
-		else if (cmd == SVC_RELOAD)
+		else if (SVC_RELOAD == cmd)
 			svc_reload(svc);
 	}
 
-	/* XXX: Hook point for plugins. */
+	_d("Running svc up hooks ...");
+	plugin_run_hooks(HOOK_SVC_UP);
 }
 
 

svc.h

@@ -1,4 +1,4 @@
-/* Generic API for managing svc_t structures
+/* Finit service monitor and heneric API for managing svc_t structures
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
  * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
@@ -30,9 +30,6 @@
 #include <sys/shm.h>		/* shmat() */
 #include <sys/types.h>		/* pid_t */
 
-#include "finit.h"
-#include "plugin.h"
-
 typedef enum {
 	SVC_STOP = 0,		/* Disabled */
 	SVC_START,		/* Enabled */
@@ -51,16 +48,22 @@ typedef enum {
  * of issuing an initctl call. E.g.
  *   initctl <stop|start|restart> service */
 typedef struct svc {
-	/* Private */
-	int            id;	/* Service ID#, set by svc_new() */
 	pid_t	       pid;
+	int	       reload;
 	char	       cmd[MAX_ARG_LEN];
 	char	       args[MAX_NUM_SVC_ARGS][MAX_ARG_LEN];
-	char	       descr[MAX_STR_LEN];
+	char	       desc[MAX_STR_LEN];
 	char           username[MAX_USER_LEN];
-	/* Public */
-	int	       delayed_reload; /* For external service plugin. */
-	plugin_svc_t  *plugin;
+
+	/* For external plugins. If @cb is set a plugin is loaded.
+	 * @dynamic:      Set by plugins that want dynamic events.
+	 * @dynamic_stop: Set by plugins that allow dyn. events to stop it as well.
+	 * @private:      Can be used freely by plugin, e.g., to store "states".
+	 */
+	int            dynamic;
+	int            dynamic_stop;
+	int            private;
+	svc_cmd_t    (*cb)(struct svc *svc, int event, void *event_arg);
 } svc_t;
 
 typedef struct svc_map svc_map_t;
@@ -73,39 +76,24 @@ static inline svc_t *finit_svc_connect(void)
 
 	if ((void *)-1 == ptr) {
 		ptr = shmat (shmget (ID, sizeof(svc_t) * MAX_NUM_SVC, 0600 | IPC_CREAT), NULL, 0);
-		if ((void *)-1 == ptr) {
-			_d("Failed allocating shared memory, error %d: %s", errno, strerror (errno));
+		if ((void *)-1 == ptr)
 			return NULL;
-		}
 	}
 
 	return (svc_t *)ptr;
 }
 
-static inline int svc_id(svc_t *svc)
-{
-	if (!svc) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	return svc->id;
-}
-
 svc_t    *svc_new           (void);
-svc_t    *svc_find_by_id    (int id);
-svc_t    *svc_find_by_name  (char *name);
+svc_t    *svc_find          (char *name);
 svc_t    *svc_iterator      (int restart);
 
 int       svc_register      (char *line, char *username);
 int       svc_id_by_name    (char *name);
-svc_cmd_t svc_enabled	    (svc_t *svc, int dynamic);
+svc_cmd_t svc_enabled	    (svc_t *svc, int event, void *arg);
 int       svc_start         (svc_t *svc);
 int       svc_start_by_name (char *name);
 int       svc_stop          (svc_t *svc);
 int       svc_reload        (svc_t *svc);
-void      svc_start_all     (void);
-void      svc_monitor       (void);
 
 #endif	/* FINIT_SVC_H_ */