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Axel Kittenberger 2008-08-06 13:04:01 +00:00
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Axel Kittenberger <axel.kittenberger@univie.ac.at>
Jürgen "README" Mangler <juergen.mangler@univie.ac.at>

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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0. This License applies to any program or other work which contains
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Also add information on how to contact you by electronic and paper mail.
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You should also get your employer (if you work as a programmer) or your
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
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library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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05-12-2007: Release of lsyncd 1.0

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Basic Installation
==================
These are generic installation instructions.
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions. Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, a file
`config.cache' that saves the results of its tests to speed up
reconfiguring, and a file `config.log' containing compiler output
(useful mainly for debugging `configure').
If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release. If at some point `config.cache'
contains results you don't want to keep, you may remove or edit it.
The file `configure.in' is used to create `configure' by a program
called `autoconf'. You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.
The simplest way to compile this package is:
1. `cd' to the directory containing the package's source code and type
`./configure' to configure the package for your system. If you're
using `csh' on an old version of System V, you might need to type
`sh ./configure' instead to prevent `csh' from trying to execute
`configure' itself.
Running `configure' takes awhile. While running, it prints some
messages telling which features it is checking for.
2. Type `make' to compile the package.
3. Optionally, type `make check' to run any self-tests that come with
the package.
4. Type `make install' to install the programs and any data files and
documentation.
5. You can remove the program binaries and object files from the
source code directory by typing `make clean'. To also remove the
files that `configure' created (so you can compile the package for
a different kind of computer), type `make distclean'. There is
also a `make maintainer-clean' target, but that is intended mainly
for the package's developers. If you use it, you may have to get
all sorts of other programs in order to regenerate files that came
with the distribution.
Compilers and Options
=====================
Some systems require unusual options for compilation or linking that
the `configure' script does not know about. You can give `configure'
initial values for variables by setting them in the environment. Using
a Bourne-compatible shell, you can do that on the command line like
this:
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
Or on systems that have the `env' program, you can do it like this:
env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you must use a version of `make' that
supports the `VPATH' variable, such as GNU `make'. `cd' to the
directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.
If you have to use a `make' that does not supports the `VPATH'
variable, you have to compile the package for one architecture at a time
in the source code directory. After you have installed the package for
one architecture, use `make distclean' before reconfiguring for another
architecture.
Installation Names
==================
By default, `make install' will install the package's files in
`/usr/local/bin', `/usr/local/man', etc. You can specify an
installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PATH'.
You can specify separate installation prefixes for
architecture-specific files and architecture-independent files. If you
give `configure' the option `--exec-prefix=PATH', the package will use
PATH as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix.
In addition, if you use an unusual directory layout you can give
options like `--bindir=PATH' to specify different values for particular
kinds of files. Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.
If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
Optional Features
=================
Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System). The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.
For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.
Specifying the System Type
==========================
There may be some features `configure' can not figure out
automatically, but needs to determine by the type of host the package
will run on. Usually `configure' can figure that out, but if it prints
a message saying it can not guess the host type, give it the
`--host=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name with three fields:
CPU-COMPANY-SYSTEM
See the file `config.sub' for the possible values of each field. If
`config.sub' isn't included in this package, then this package doesn't
need to know the host type.
If you are building compiler tools for cross-compiling, you can also
use the `--target=TYPE' option to select the type of system they will
produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.
Sharing Defaults
================
If you want to set default values for `configure' scripts to share,
you can create a site shell script called `config.site' that gives
default values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Operation Controls
==================
`configure' recognizes the following options to control how it
operates.
`--cache-file=FILE'
Use and save the results of the tests in FILE instead of
`./config.cache'. Set FILE to `/dev/null' to disable caching, for
debugging `configure'.
`--help'
Print a summary of the options to `configure', and exit.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to `/dev/null' (any error
messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--version'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' also accepts some other, not widely useful, options.

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## Makefile.am -- Process this file with automake to produce Makefile.in
bin_PROGRAMS = lsyncd
lsyncd_SOURCES = lsyncd.c
datarootdir = @datarootdir@
EXTRA_DIST = config.h.in inotify-nosys.h

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Makefile.in Normal file
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# Makefile.in generated automatically by automake 1.4-p6 from Makefile.am
# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
SHELL = @SHELL@
srcdir = @srcdir@
top_srcdir = @top_srcdir@
VPATH = @srcdir@
prefix = @prefix@
exec_prefix = @exec_prefix@
bindir = @bindir@
sbindir = @sbindir@
libexecdir = @libexecdir@
datadir = @datadir@
sysconfdir = @sysconfdir@
sharedstatedir = @sharedstatedir@
localstatedir = @localstatedir@
libdir = @libdir@
infodir = @infodir@
mandir = @mandir@
includedir = @includedir@
oldincludedir = /usr/include
DESTDIR =
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
top_builddir = .
ACLOCAL = @ACLOCAL@
AUTOCONF = @AUTOCONF@
AUTOMAKE = @AUTOMAKE@
AUTOHEADER = @AUTOHEADER@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS)
INSTALL_DATA = @INSTALL_DATA@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
transform = @program_transform_name@
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
host_alias = @host_alias@
host_triplet = @host@
AR = @AR@
AS = @AS@
CC = @CC@
CXX = @CXX@
CXXCPP = @CXXCPP@
DLLTOOL = @DLLTOOL@
ECHO = @ECHO@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
F77 = @F77@
GCJ = @GCJ@
GCJFLAGS = @GCJFLAGS@
HAVE_LIB = @HAVE_LIB@
LIB = @LIB@
LIBTOOL = @LIBTOOL@
LN_S = @LN_S@
LTLIB = @LTLIB@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@
OBJDUMP = @OBJDUMP@
OBJEXT = @OBJEXT@
PACKAGE = @PACKAGE@
RANLIB = @RANLIB@
RC = @RC@
STRIP = @STRIP@
VERSION = @VERSION@
bin_PROGRAMS = lsyncd
lsyncd_SOURCES = lsyncd.c
datarootdir = @datarootdir@
EXTRA_DIST = config.h.in inotify-nosys.h
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
CONFIG_CLEAN_FILES =
bin_PROGRAMS = lsyncd$(EXEEXT)
PROGRAMS = $(bin_PROGRAMS)
DEFS = @DEFS@ -I. -I$(srcdir)
CPPFLAGS = @CPPFLAGS@
LDFLAGS = @LDFLAGS@
LIBS = @LIBS@
lsyncd_OBJECTS = lsyncd.$(OBJEXT)
lsyncd_LDADD = $(LDADD)
lsyncd_DEPENDENCIES =
lsyncd_LDFLAGS =
CFLAGS = @CFLAGS@
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(LIBTOOL) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
DIST_COMMON = README AUTHORS COPYING ChangeLog INSTALL Makefile.am \
Makefile.in NEWS TODO aclocal.m4 config.guess config.sub configure \
configure.in install-sh ltmain.sh missing mkinstalldirs
DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
TAR = tar
GZIP_ENV = --best
SOURCES = $(lsyncd_SOURCES)
OBJECTS = $(lsyncd_OBJECTS)
all: all-redirect
.SUFFIXES:
.SUFFIXES: .S .c .lo .o .obj .s
$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
cd $(top_srcdir) && $(AUTOMAKE) --gnu --include-deps Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
cd $(top_builddir) \
&& CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status
$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ configure.in
cd $(srcdir) && $(ACLOCAL)
config.status: $(srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
$(SHELL) ./config.status --recheck
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$(COMPILE) -c $<
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# and only if it is available.
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$(COMPILE) -c `cygpath -w $<`
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$(COMPILE) -c $<
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$(COMPILE) -c $<
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-rm -rf $(distdir)
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# Otherwise a system limit (for SysV at least) may be exceeded.
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1
NEWS Normal file
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2007-12-05: Lsyncd has been created. Hurray!

121
README Normal file
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lsyncd - Live Syncing (Mirror) Daemon
DESCRIPTION:
Lsyncd uses rsync to synchronize local directories with a remote machine
running rsyncd. Lsyncd watches multiple directories trees through inotify.
The first step after adding the watches is to, rsync all directories with
the remote host, and then sync single file buy collecting the inotify events.
So lsyncd is a light-weight live mirror solution that should be easy to
install and use while blending well with your system.
See lsyncd --help for detailed command line options.
WHEN TO USE:
Lsyncd is designed to synchronize a local directory tree with low profile of
expected changes to a remote mirror. On the receivers side rsyncd can be
configured to also change the uid/gid of the file. Lsyncd is especially
useful to sync data from a secure area to a not-so-secure area (e.g. as a
one way connection to allow employees to publish their files to a public
accessible web server).
WHEN NOT TO USE:
* File with active file handles (e.g. database files)
* Directories where many changes occur (like mail or news servers)
In these cases e.g. DRBD (see http://www.linux-ha.org/DRBD) might be better
for you.
COMPARISONS:
Lsyncd vs. DRBD:
DRBD operates on block device level. This makes it useful for
synchronizing systems that are under heavy load. Lsyncd on the other hand
* does not require you to change block devices and/or mount points.
* allows you to change uid/gid of the transferred files.
* separates the receiver through the one-way nature of rsync.
However when using lsyncd a file change can possibly result in a full file
transfer (at least for binary files) and is therefore unsuitable for
databases. Also a directory rename will result in transferring the whole
directory.
Lsyncd vs. incron:
Incron does not (yet) support recursive directory watching making it
unsuitable for described needs (http://inotify.aiken.cz/?section=incron&page=about&lang=en).
In fact a different approach would have been to extent incron. However, we
decided to stick to the NIH principle (Not Invented Here) :-), because extending
the C++ solution seemed to tedious.
Lsyncd vs. FUSE:
This is another interesting idea is to write a daemon that provides a
shadow file system through fuse. When accessing a file the data is synced
to local file as well as the remote file. Whit this approach inotify could
be replaced. BindFS (see http://www.cs.helsinki.fi/u/partel/bindfs/)
does this for local mirroring. We discarded this idea because it would
affect performance of normal operations in a negative way.
Lsyncd vs. cron:
If you find a solution using cron to call rsync over the whole directory
tree periodically after every 'X' hours/minutes/seconds more satisfying
than lsyncd, please go for it *sulking*. We don't like it!
LSYNCD USAGE EXAMPLES:
/usr/sbin/lsyncd /var/www/ remotehost::wwwshare/
This watches and rsycn's the local directory /var/www/ with all
subdirectories and transfers them to 'remotehost' using the rsync-share
'wwwshare'.
/usr/sbin/lsyncd --nodaemon --exclude-from /etc/lsycnd/exclude \
/var/www/ remotehost::wwwshare/
This will also rsync/watch '/var/www', but it excludes files and directories
from '/etc/lsycnd/exclude'. Additionally this example lsyncd will not fork,
and log to stdout/stderr instead.
/usr/sbin/lsyncd %userwww remotehost::wwwshare/foobar/
This special target will scan through all directories in /home and syncs all
www subdirectories of the users to wwwshare in the subdirectory foobar.
The user peter having his local data in /home/peter/www/ will have it
rsynced to ::wwwshare/foobar/peter/.
LIMITATIONS:
Be aware that the kernel limits the number of watches. You can see the limit
in
/proc/sys/fs/inotify/max_user_watches
which is usually set to 8192. This means lsyncd cannot watch more than 8192
directories unless you change the kernel setting. Lsyncd itself has no
limits.
Because Axel is lazy the maximum possible size a filename is 8192. If you
need more, change MAX_PATH in lsyncd.c. Or send me patches that introduce
dynamic memory usage.
SOURCE DOCUMENTATION:
The only file of interest is 'lsyncd.c' which includes comments.
Everything else in the tarball is packaging bushwa.
DISCLAIMER:
Besides the usual disclaimer in the license, we want to specifically EMPHASIZE
that NEITHER the authors NOR any organization the authors are associated with
can and will hold responsible for data-loss caused by possible malfunctions
of lsyncd. Especially if you run it with root privileges ;-) (we ourselves
run lsyncd as www-data).
FEEDBACK:
Please send praises and feedback to: axel.kittenberger@univie.ac.at

14
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* React on signal HUP resync and rewatch everything.
* Allow several source->target specifications.
* Allow more complicated source masks like /home/%1/www/ -> target::%1/
* Workaround the default 8192 watches kernel limit by opening another inotify
instance when needed.
* React on inotify OVERFLOW messages in resyncing everything, something might
have been missed.
* Allow more complicated exclusion masks.
* Do not call rsync at all if a file was edited that falls under the exclusion
mask (currently it is called, and rsync drops it.
* When several things happen at once, wait if calls to rsync can be optimized
* Allow users to specificy more rsync call options.
* Make a manpage.
* improve config.h.in generation

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/* \
config.h
.in. Generated from configure.in by autoheader. */
/* Define to 1 if you have the <dirent.h> header file. */
#undef HAVE_DIRENT_H
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the <errno.h> header file. */
#undef HAVE_ERRNO_H
/* Define to 1 if you have the <getopt.h> header file. */
#undef HAVE_GETOPT_H
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the <stdarg.h> header file. */
#undef HAVE_STDARG_H
/* Define to 1 if you have the <stdbool.h> header file. */
#undef HAVE_STDBOOL_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdio.h> header file. */
#undef HAVE_STDIO_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/inotify.h> header file. */
#undef HAVE_SYS_INOTIFY_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <sys/wait.h> header file. */
#undef HAVE_SYS_WAIT_H
/* Define to 1 if you have the <time.h> header file. */
#undef HAVE_TIME_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION

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AC_INIT(lsyncd.c)
PACKAGE=lsyncd
VERSION=1.0
AM_INIT_AUTOMAKE($PACKAGE,$VERSION)
AM_MAINTAINER_MODE
AC_PROG_CC
AC_PROG_LIBTOOL
AC_PROG_INSTALL
AC_CHECK_HEADERS(\
sys/types.h \
sys/stat.h \
sys/wait.h \
sys/inotify.h \
stdio.h \
stdlib.h \
stdarg.h \
stdbool.h \
string.h \
unistd.h \
errno.h \
time.h \
dirent.h \
getopt.h
)
AC_CONFIG_HEADERS(\
config.h
)
AC_OUTPUT(Makefile)

181
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/*
* This header is used if <sys/inotify.h> cannot be found.
*
* Inode based directory notification for Linux
*
* Copyright (C) 2005 John McCutchan
*/
#ifndef _LINUX_INOTIFY_H
#define _LINUX_INOTIFY_H
#include <stdint.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <asm/unistd.h>
/*
* struct inotify_event - structure read from the inotify device for each event
*
* When you are watching a directory, you will receive the filename for events
* such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
*/
struct inotify_event {
int wd; /* watch descriptor */
uint32_t mask; /* watch mask */
uint32_t cookie; /* cookie to synchronize two events */
uint32_t len; /* length (including nulls) of name */
char name __flexarr; /* stub for possible name */
};
/* the following are legal, implemented events that user-space can watch for */
#define IN_ACCESS 0x00000001 /* File was accessed */
#define IN_MODIFY 0x00000002 /* File was modified */
#define IN_ATTRIB 0x00000004 /* Metadata changed */
#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
#define IN_OPEN 0x00000020 /* File was opened */
#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
#define IN_CREATE 0x00000100 /* Subfile was created */
#define IN_DELETE 0x00000200 /* Subfile was deleted */
#define IN_DELETE_SELF 0x00000400 /* Self was deleted */
#define IN_MOVE_SELF 0x00000800 /* Self was moved */
/* the following are legal events. they are sent as needed to any watch */
#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
#define IN_IGNORED 0x00008000 /* File was ignored */
/* helper events */
#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
/* special flags */
#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
#define IN_ISDIR 0x40000000 /* event occurred against dir */
#define IN_ONESHOT 0x80000000 /* only send event once */
/*
* All of the events - we build the list by hand so that we can add flags in
* the future and not break backward compatibility. Apps will get only the
* events that they originally wanted. Be sure to add new events here!
*/
#define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
IN_MOVE_SELF)
#if 0
#if defined (__alpha__)
# define __NR_inotify_init 444
# define __NR_inotify_add_watch 445
# define __NR_inotify_rm_watch 446
#elif defined (__arm__)
# define __NR_inotify_init (__NR_SYSCALL_BASE+316)
# define __NR_inotify_add_watch (__NR_SYSCALL_BASE+317)
# define __NR_inotify_rm_watch (__NR_SYSCALL_BASE+318)
#elif defined (__frv__)
# define __NR_inotify_init 291
# define __NR_inotify_add_watch 292
# define __NR_inotify_rm_watch 293
#elif defined(__i386__)
# define __NR_inotify_init 291
# define __NR_inotify_add_watch 292
# define __NR_inotify_rm_watch 293
#elif defined (__ia64__)
# define __NR_inotify_init 1277
# define __NR_inotify_add_watch 1278
# define __NR_inotify_rm_watch 1279
#elif defined (__mips__)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define __NR_inotify_init (__NR_Linux + 284)
# define __NR_inotify_add_watch (__NR_Linux + 285)
# define __NR_inotify_rm_watch (__NR_Linux + 286)
# endif
# if _MIPS_SIM == _MIPS_SIM_ABI64
# define __NR_inotify_init (__NR_Linux + 243)
# define __NR_inotify_add_watch (__NR_Linux + 243)
# define __NR_inotify_rm_watch (__NR_Linux + 243)
# endif
# if _MIPS_SIM == _MIPS_SIM_NABI32
# define __NR_inotify_init (__NR_Linux + 247)
# define __NR_inotify_add_watch (__NR_Linux + 248)
# define __NR_inotify_rm_watch (__NR_Linux + 249)
# endif
#elif defined(__parisc__)
# define __NR_inotify_init (__NR_Linux + 269)
# define __NR_inotify_add_watch (__NR_Linux + 270)
# define __NR_inotify_rm_watch (__NR_Linux + 271)
#elif defined(__powerpc__) || defined(__powerpc64__)
# define __NR_inotify_init 275
# define __NR_inotify_add_watch 276
# define __NR_inotify_rm_watch 277
#elif defined (__s390__)
# define __NR_inotify_init 284
# define __NR_inotify_add_watch 285
# define __NR_inotify_rm_watch 286
#elif defined (__sh__)
# define __NR_inotify_init 290
# define __NR_inotify_add_watch 291
# define __NR_inotify_rm_watch 292
#elif defined (__sh64__)
# define __NR_inotify_init 318
# define __NR_inotify_add_watch 319
# define __NR_inotify_rm_watch 320
#elif defined (__sparc__) || defined (__sparc64__)
# define __NR_inotify_init 151
# define __NR_inotify_add_watch 152
# define __NR_inotify_rm_watch 156
#elif defined(__x86_64__)
# define __NR_inotify_init 253
# define __NR_inotify_add_watch 254
# define __NR_inotify_rm_watch 255
#else
# error "Unsupported architecture!"
#endif
#endif
#ifndef __NR_inotify_init
# error "Unsupported architecture!"
#endif
#ifndef __NR_inotify_add_watch
# error "Unsupported architecture!"
#endif
#ifndef __NR_inotify_rm_watch
# error "Unsupported architecture!"
#endif
static inline int inotify_init (void)
{
return syscall (__NR_inotify_init);
}
static inline int inotify_add_watch (int fd, const char *name, uint32_t mask)
{
return syscall (__NR_inotify_add_watch, fd, name, mask);
}
static inline int inotify_rm_watch (int fd, uint32_t wd)
{
return syscall (__NR_inotify_rm_watch, fd, wd);
}
#endif /* _LINUX_INOTIFY_H */

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#!/bin/sh
#
# install - install a program, script, or datafile
#
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# 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
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# `make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch. It can only install one file at a time, a restriction
# shared with many OS's install programs.
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit="${DOITPROG-}"
# put in absolute paths if you don't have them in your path; or use env. vars.
mvprog="${MVPROG-mv}"
cpprog="${CPPROG-cp}"
chmodprog="${CHMODPROG-chmod}"
chownprog="${CHOWNPROG-chown}"
chgrpprog="${CHGRPPROG-chgrp}"
stripprog="${STRIPPROG-strip}"
rmprog="${RMPROG-rm}"
mkdirprog="${MKDIRPROG-mkdir}"
transformbasename=""
transform_arg=""
instcmd="$mvprog"
chmodcmd="$chmodprog 0755"
chowncmd=""
chgrpcmd=""
stripcmd=""
rmcmd="$rmprog -f"
mvcmd="$mvprog"
src=""
dst=""
dir_arg=""
while [ x"$1" != x ]; do
case $1 in
-c) instcmd="$cpprog"
shift
continue;;
-d) dir_arg=true
shift
continue;;
-m) chmodcmd="$chmodprog $2"
shift
shift
continue;;
-o) chowncmd="$chownprog $2"
shift
shift
continue;;
-g) chgrpcmd="$chgrpprog $2"
shift
shift
continue;;
-s) stripcmd="$stripprog"
shift
continue;;
-t=*) transformarg=`echo $1 | sed 's/-t=//'`
shift
continue;;
-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
shift
continue;;
*) if [ x"$src" = x ]
then
src=$1
else
# this colon is to work around a 386BSD /bin/sh bug
:
dst=$1
fi
shift
continue;;
esac
done
if [ x"$src" = x ]
then
echo "install: no input file specified"
exit 1
else
true
fi
if [ x"$dir_arg" != x ]; then
dst=$src
src=""
if [ -d $dst ]; then
instcmd=:
chmodcmd=""
else
instcmd=mkdir
fi
else
# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if [ -f $src -o -d $src ]
then
true
else
echo "install: $src does not exist"
exit 1
fi
if [ x"$dst" = x ]
then
echo "install: no destination specified"
exit 1
else
true
fi
# If destination is a directory, append the input filename; if your system
# does not like double slashes in filenames, you may need to add some logic
if [ -d $dst ]
then
dst="$dst"/`basename $src`
else
true
fi
fi
## this sed command emulates the dirname command
dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
# Make sure that the destination directory exists.
# this part is taken from Noah Friedman's mkinstalldirs script
# Skip lots of stat calls in the usual case.
if [ ! -d "$dstdir" ]; then
defaultIFS='
'
IFS="${IFS-${defaultIFS}}"
oIFS="${IFS}"
# Some sh's can't handle IFS=/ for some reason.
IFS='%'
set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
IFS="${oIFS}"
pathcomp=''
while [ $# -ne 0 ] ; do
pathcomp="${pathcomp}${1}"
shift
if [ ! -d "${pathcomp}" ] ;
then
$mkdirprog "${pathcomp}"
else
true
fi
pathcomp="${pathcomp}/"
done
fi
if [ x"$dir_arg" != x ]
then
$doit $instcmd $dst &&
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
else
# If we're going to rename the final executable, determine the name now.
if [ x"$transformarg" = x ]
then
dstfile=`basename $dst`
else
dstfile=`basename $dst $transformbasename |
sed $transformarg`$transformbasename
fi
# don't allow the sed command to completely eliminate the filename
if [ x"$dstfile" = x ]
then
dstfile=`basename $dst`
else
true
fi
# Make a temp file name in the proper directory.
dsttmp=$dstdir/#inst.$$#
# Move or copy the file name to the temp name
$doit $instcmd $src $dsttmp &&
trap "rm -f ${dsttmp}" 0 &&
# and set any options; do chmod last to preserve setuid bits
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $instcmd $src $dsttmp" command.
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
# Now rename the file to the real destination.
$doit $rmcmd -f $dstdir/$dstfile &&
$doit $mvcmd $dsttmp $dstdir/$dstfile
fi &&
exit 0

852
lsyncd.c Normal file
View File

@ -0,0 +1,852 @@
/**
* lsyncd.c Live (Mirror) Syncing Demon
*
* License: GPLv2 (see COPYING) or any later version
*
* Authors: Axel Kittenberger <axel.kittenberger@univie.ac.at>
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#ifdef HAVE_SYS_INOTIFY_H
# include <sys/inotify.h>
#else
# include "inotify-nosys.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <dirent.h>
#include <getopt.h>
#define INOTIFY_BUF_LEN (512 * (sizeof(struct inotify_event) + 16))
#define LOG_DEBUG 1
#define LOG_NORMAL 2
#define LOG_ERROR 3
#define VER_MAJOR 1
#define VER_MINOR 0
int loglevel = LOG_NORMAL;
/**
* Option: if true rsync will not be actually called.
*/
int flag_dryrun = 0;
/**
* Option: if true, do not detach and log to stdout/stderr.
*/
int flag_nodaemon = 0;
/**
* Option: Source dir to watch
*/
char * option_source = NULL;
/**
* Option: Target to rsync to.
*/
char * option_target = NULL;
/**
* Option: rsync binary to call.
*/
char * rsync_binary = "/usr/bin/rsync";
/**
* Option: the exclude-file to pass to rsync.
*/
char * exclude_file = NULL;
/**
* The maximum character length paths may take
*/
#define MAX_PATH (8*1024)
/**
* Structure to store the directory watches of the deamon.
*/
struct dir_watch {
/**
* The watch descriptor returned by kernel.
*/
int wd;
/**
* The name of the directory.
* In case of the root dir to be watched, it is a full path
* and parent == NULL. Otherwise its just the name of the
* directory and parent points to the parent directory thats
* also watched.
*/
char * dirname;
/**
* Call this directory that way on destiation.
* if NULL call it like dirname.
*/
char * destname;
/**
* Points to the index of the parent.
* -1 if no parent
*/
int parent;
};
/**
* Structure to store strings for the diversve Inotfy masked events.
* Actually used for compfortable debugging only.
*/
struct inotify_mask_text {
int mask;
char const * text;
};
/**
* A constant that assigns every inotify mask a printable string.
* Used for debugging.
*/
struct inotify_mask_text mask_texts[] = {
{ IN_ACCESS, "ACCESS" },
{ IN_ATTRIB, "ATTRIB" },
{ IN_CLOSE_WRITE, "CLOSE_WRITE" },
{ IN_CLOSE_NOWRITE, "CLOSE_NOWRITE" },
{ IN_CREATE, "CREATE" },
{ IN_DELETE, "DELETE" },
{ IN_DELETE_SELF, "DELETE_SELF" },
{ IN_MODIFY, "MODIFY" },
{ IN_MOVE_SELF, "MOVE_SELF" },
{ IN_MOVED_FROM, "MOVED_FROM" },
{ IN_MOVED_TO, "MOVED_TO" },
{ IN_OPEN, "OPEN" },
{ 0, "" },
};
/**
* Holds an allocated array of all directories watched.
*/
struct dir_watch *dir_watches;
/**
* The allocated size of dir_watches;
*/
int dir_watch_size = 0;
/**
* The largest dir_watch number used;
*/
int dir_watch_num = 0;
/**
* lsyncd will log into this file/stream.
*/
char * logfile = "/var/log/lsyncd";
/**
* The inotify instance.
*/
int inotf;
/**
* Array of strings of directory names to include.
* This is limited to MAX_EXCLUDES.
* It's not worth to code a dynamic size handling...
*/
#define MAX_EXCLUDES 256
char * exclude_dirs[MAX_EXCLUDES] = {NULL, };
int exclude_dir_n = 0;
volatile sig_atomic_t keep_going = 1;
void catch_alarm(int sig) {
keep_going = 0;
}
/**
* Prints a message to the log stream, preceding a timestamp.
* Otherwise it behaves like printf();
*/
void printlogf(int level, const char *fmt, ...) {
va_list ap;
char * ct;
time_t mtime;
FILE * flog;
if (level < loglevel) {
return;
}
if (!flag_nodaemon) {
flog = fopen(logfile, "a");
if (flog == NULL) {
printf("cannot open logfile!\n");
exit(-1);
}
} else {
flog = stdout;
}
va_start(ap, fmt);
time(&mtime);
ct = ctime(&mtime);
ct[strlen(ct) - 1] = 0; // cut trailing \n
fprintf(flog, "%s: ", ct);
switch (level) {
case LOG_DEBUG : break;
case LOG_NORMAL : break;
case LOG_ERROR : fprintf(flog, "ERROR :"); break;
}
vfprintf(flog, fmt, ap);
fprintf(flog, "\n");
va_end(ap);
if (!flag_nodaemon) {
fclose(flog);
}
}
/**
* "secured" malloc, meaning the deamon shall kill itself
* in case of out of memory.
*
* On linux systems, which is actually the only system this
* deamon will run at, due to the use of inotify, this is
* an "academic" cleaness only, linux will never return out
* memory, but kill a process to ensure memory will be
* available.
*/
void *s_malloc(size_t size) {
void *r = malloc(size);
if (r == NULL) {
printlogf(LOG_ERROR, "Out of memory!");
exit(-1);
}
return r;
}
/**
* "secured" calloc.
*/
void *s_calloc(size_t nmemb, size_t size) {
void *r = calloc(nmemb, size);
if (r == NULL) {
printlogf(LOG_ERROR, "out of memory!");
exit(-1);
}
return r;
}
/**
* "secured" realloc.
*/
void *s_realloc(void *ptr, size_t size) {
void *r = realloc(ptr, size);
if (r == NULL) {
printlogf(LOG_ERROR, "out of memory!");
exit(-1);
}
return r;
}
/**
* Calls rsync to sync from src to dest.
* Returns after rsync has finished.
*
* @param src Source string.
* @param dest Destination string,
* @param recursive If true -r will be handled on, -d (single directory) otherwise
*/
bool rsync(char const * src, const char * dest, bool recursive) {
pid_t pid;
int status;
char const * opts = recursive ? "-ltr" : "-ltd";
if (exclude_file) {
printlogf(LOG_DEBUG, "exec %s(%s,%s,%s,%s,%s,%s)", rsync_binary, "--delete", opts, "--exclude-from", exclude_file, src, dest);
} else {
printlogf(LOG_DEBUG, "exec %s(%s,%s,%s,%s)", rsync_binary, "--delete", opts, src, dest);
}
if (flag_dryrun) {
return true;
}
pid = fork();
if (pid == 0) {
if (!flag_nodaemon) {
freopen(logfile, "a", stdout);
freopen(logfile, "a", stderr);
}
if (exclude_file) {
execl(rsync_binary, rsync_binary, "--delete", opts, "--exclude-from", exclude_file, src, dest, NULL);
} else {
execl(rsync_binary, rsync_binary, "--delete", opts, src, dest, NULL);
}
printlogf(LOG_ERROR, "oh my god, execl returned!");
exit(-1);
}
waitpid(pid, &status, 0);
return true;
}
/**
* Adds a directory to watch
*
* @param pathname the absolute path of the directory to watch.
* @param dirname the name of the directory only (yes this is a bit redudant, but oh well)
* @param destname if not NULL call this dir that way on destionation.
* @param parent if not -1 the index to the parent directory that is already watched
*
* @return index to dir_watches of the new dir, -1 on error.
*/
int add_watch(char const * pathname, char const * dirname, char const * destname, int parent) {
int wd;
char * nn;
int newdw;
wd = inotify_add_watch(inotf, pathname,
IN_ATTRIB | IN_CLOSE_WRITE | IN_CREATE | IN_DELETE | IN_DELETE_SELF |
IN_MOVED_FROM | IN_MOVED_TO | IN_DONT_FOLLOW | IN_ONLYDIR);
if (wd == -1) {
printlogf(LOG_ERROR, "Cannot add watch %s (%d:%s)", pathname, errno, strerror(errno));
return -1;
}
// look if an unused slot can be found.
for(newdw = 0; newdw < dir_watch_num; newdw++) {
if (dir_watches[newdw].wd < 0) {
break;
}
}
if (newdw == dir_watch_num) {
if (dir_watch_num + 1 >= dir_watch_size) {
dir_watch_size *= 2;
dir_watches = s_realloc(dir_watches, dir_watch_size * sizeof(struct dir_watch));
}
dir_watch_num++;
}
dir_watches[newdw].wd = wd;
dir_watches[newdw].parent = parent;
nn = s_malloc(strlen(dirname) + 1);
strcpy(nn, dirname);
dir_watches[newdw].dirname = nn;
if (destname) {
nn = s_malloc(strlen(destname) + 1);
strcpy(nn, destname);
dir_watches[newdw].destname = nn;
} else {
dir_watches[newdw].destname = NULL;
}
return newdw;
}
/**
* Builds the abolute path name of a given directory beeing watched.
*
* @param pathname destination buffer to store the result to.
* @param pathsize max size of this buffer
* @param watch the index in dir_watches to the directory.
* @param name if not null, this beeing the watch dir itself is appended.
* @param prefix if not NULL it is added at the bein of pathname
*/
bool buildpath(char *pathname,
int pathsize,
int watch,
char const *name,
char const * prefix) {
int j, k, p, ps;
pathname[0] = 0;
if (prefix) {
strcat(pathname, prefix);
}
// count how big the parent stack is
for(p = watch, ps = 0; p != -1; p = dir_watches[p].parent, ps++) {
}
// now add the parent paths from back to front
for(j = ps; j > 0; j--) {
char * name;
// go j steps behind stack
for(p = watch, k = 0; k + 1 < j; p = dir_watches[p].parent, k++) {
}
name = (prefix && dir_watches[p].destname) ? dir_watches[p].destname : dir_watches[p].dirname;
if (strlen(pathname) + strlen(name) + 2 >= pathsize) {
printlogf(LOG_ERROR, "path too long %s/...", name);
return false;
}
strcat(pathname, name);
strcat(pathname, "/");
}
if (name) {
if (strlen(pathname) + strlen(name) + 2 >= pathsize) {
printlogf(LOG_ERROR, "path too long %s//%s", pathname, name);
return false;
}
strcat(pathname, name);
}
return true;
}
/**
* Adds a dir to watch.
*
* @param dirname The name or absolute path of the directory to watch.
* @param destname If not NULL call this dir that way on sync destination.
* @param recursive If true, will also watch all sub-directories.
* @param parent If not -1, the index in dir_watches to the parent directory already watched.
* Must have absolute path if parent == -1.
*/
bool add_dirwatch(char const * dirname, char const * destname, bool recursive, int parent) {
DIR *d;
struct dirent *de;
int dw, i;
char pathname[MAX_PATH];
printlogf(LOG_DEBUG, "add_dirwatch(%s, %s, %d, p->dirname:%s)", dirname, destname, recursive, parent >= 0 ? dir_watches[parent].dirname : "NULL");
if (!buildpath(pathname, sizeof(pathname), parent, dirname, NULL)) {
return false;
}
for (i = 0; i < exclude_dir_n; i++) {
if (!strcmp(dirname, exclude_dirs[i])) {
return true;
}
}
dw = add_watch(pathname, dirname, destname, parent);
if (dw == -1) {
return false;
}
if (strlen(pathname) + strlen(dirname) + 2 > sizeof(pathname)) {
printlogf(LOG_ERROR, "pathname too long %s//%s", pathname, dirname);
return false;
}
d = opendir(pathname);
if (d == NULL) {
printlogf(LOG_ERROR, "cannot open dir %s.", dirname);
return false;
}
while(keep_going) {
de = readdir(d);
if (de == NULL) {
break;
}
if (de->d_type == DT_DIR && strcmp(de->d_name, "..") && strcmp(de->d_name, ".")) {
add_dirwatch(de->d_name, NULL, true, dw);
}
}
closedir(d);
return true;
}
/**
* Removes a watched dir, including recursevily all subdirs.
*
* @param name Optionally. If not NULL, the directory name to remove which is a child of parent.
* @param parent The index to the parent directory of the directory 'name' to remove,
* or to be removed itself if name == NULL.
*/
bool remove_dirwatch(const char * name, int parent) {
int i;
int dw;
if (name) {
// look for the child with the name
for(i = 0; i < dir_watch_num; i++) {
if (dir_watches[i].wd >= 0 && dir_watches[i].parent == parent &&
!strcmp(name, dir_watches[i].dirname)) {
dw = i;
break;
}
}
if (i >= dir_watch_num) {
printlogf(LOG_ERROR, "Cannot find entry for %s:/:%s :-(", dir_watches[parent].dirname, name);
return false;
}
} else {
dw = parent;
}
for(i = 0; i < dir_watch_num; i++) {
if (dir_watches[i].wd >= 0 && dir_watches[i].parent == dw) {
remove_dirwatch(NULL, i);
}
}
inotify_rm_watch(inotf, dir_watches[dw].wd);
dir_watches[dw].wd = -1;
free(dir_watches[dw].dirname);
dir_watches[dw].dirname = NULL;
if (dir_watches[dw].destname) {
free(dir_watches[dw].destname);
dir_watches[dw].destname = NULL;
}
return true;
}
/**
* Handles an inotify event.
*
* @param event The event to handle
*/
bool handle_event(struct inotify_event *event) {
char masktext[255] = {0,};
char pathname[MAX_PATH];
char destname[MAX_PATH];
int mask = event->mask;
int i;
struct inotify_mask_text *p;
if (IN_IGNORED & event->mask) {
return true;
}
for (i = 0; i < exclude_dir_n; i++) {
if (!strcmp(event->name, exclude_dirs[i])) {
return true;
}
}
for(p = mask_texts; p->mask; p++) {
if (mask & p->mask) {
if (strlen(masktext) + strlen(p->text) + 3 >= sizeof(masktext)) {
printlogf(LOG_ERROR, "bufferoverflow in handle_event");
return false;
}
if (*masktext) {
strcat(masktext, ", ");
}
strcat(masktext, p->text);
}
}
for(i = 0; i < dir_watch_num; i++) {
if (dir_watches[i].wd == event->wd) {
break;
}
}
if (i >= dir_watch_num) {
printlogf(LOG_ERROR, "received unkown inotify event :-(%d)", event->mask);
return false;
}
if (((IN_CREATE | IN_MOVED_TO) & event->mask) && (IN_ISDIR & event->mask)) {
add_dirwatch(event->name, NULL, false, i);
}
if (((IN_DELETE | IN_MOVED_FROM) & event->mask) && (IN_ISDIR & event->mask)) {
remove_dirwatch(event->name, i);
}
if (!buildpath(pathname, sizeof(pathname), i, NULL, NULL)) {
return false;
}
if (!buildpath(destname, sizeof(destname), i, NULL, option_target)) {
return false;
}
// call rsync to propagate changes in the directory
if ((IN_CREATE | IN_CLOSE_WRITE | IN_DELETE | IN_MOVED_TO | IN_MOVED_FROM) & event->mask) {
printlogf(LOG_NORMAL, "%s of %s in %s --> %s", masktext, event->name, pathname, destname);
rsync(pathname, destname, false);
}
return 0;
}
/**
* The control loop waiting for inotify events.
*/
bool master_loop() {
char buf[INOTIFY_BUF_LEN];
int len, i = 0;
while (keep_going) {
len = read (inotf, buf, INOTIFY_BUF_LEN);
if (len < 0) {
printlogf(LOG_ERROR, "failed to read from inotify (%d:%s)", errno, strerror(errno));
return false;
}
if (len == 0) {
printlogf(LOG_ERROR, "eof?");
return false;
}
i = 0;
while (i < len) {
struct inotify_event *event = (struct inotify_event *) &buf[i];
handle_event(event);
i += sizeof(struct inotify_event) + event->len;
}
}
return true;
}
/**
* Scans all dirs in /home, looking if a www subdir exists.
* Syncs this dir immediately, and adds watches to it.
*/
bool scan_homes() {
DIR *d;
DIR *d2;
char path[MAX_PATH];
char destpath[MAX_PATH];
struct dirent *de;
d = opendir("/home");
if (d == NULL) {
printlogf(LOG_ERROR, "Cannot open /home");
return false;
}
while(keep_going) {
de = readdir(d);
if (de == NULL) {
break;
}
if (de->d_type == DT_DIR && strcmp(de->d_name, "..") && strcmp(de->d_name, ".")) {
snprintf(path, sizeof(path), "/home/%s/www/", de->d_name);
d2 = opendir(path);
if (d2 == NULL) {
//has no www dir or is not readable
printlogf(LOG_NORMAL, "skipping %s. it has no readable www directory.", de->d_name);
continue;
}
closedir(d2);
printlogf(LOG_NORMAL, "watching %s's www directory (%s)", de->d_name, path);
add_dirwatch(path, de->d_name, true, -1);
snprintf(destpath, sizeof(destpath), "%s/%s/", option_target, de->d_name);
rsync(path, destpath, true);
}
}
closedir(d);
return true;
}
/**
* Prints the help text and exits 0.
*
* @param arg0 argv[0] to show what lsyncd was called with.
*/
void print_help(char *arg0) {
printf("\n");
printf("USAGE: %s [OPTION]... SOURCE TARGET\n", arg0);
printf("\n");
printf("SOURCE: a directory to watch and rsync.\n");
printf(" specify special \"%%userwww\" to scan all users in /home and watch their www directories. \n");
printf("\n");
printf("TARGET: can be any name accepted by rsync. e.g. \"foohost::barmodule/\"\n");
printf("\n");
printf("OPTIONS:\n");
printf(" --debug Log debug messages\n");
printf(" --dryrun Do not call rsync, run dry only\n");
printf(" --exclude-from FILE Exclude file handlet to rsync (DEFAULT: None)\n");
printf(" --help Print this help text and exit.\n");
printf(" --logfile FILE Put log here (DEFAULT: /var/log/lsyncd)\n");
printf(" --no-daemon Do not detach, log to stdout/stderr\n");
printf(" --rsync-binary FILE Call this binary to sync (DEFAULT: /usr/bin/rsync)\n");
printf(" --scarce Only log errors\n");
printf(" --version Print version an exit.\n");
printf("\n");
printf("Take care that lsyncd is allowed to write to the logfile specified.\n");
printf("\n");
printf("EXCLUDE FILE: \n");
printf(" The exclude file may have either filebased general masks like \"*.php\" without directory specifications,\n");
printf(" or exclude complete directories like \"Data/\". lsyncd will recognize directory excludes by the trailing '/'\n");
printf(" and will not add watches of directories of exactly such name including sub-directories of them.\n");
printf(" Please do not try to use more sophisticated exclude masks like \"Data/*.dat\" or \"Da*a/\", \"Data/Volatile/\" etc.\n");
printf(" This will not work like you would expect it to.\n");
printf("\n");
printf("LICENSE\n");
printf(" GPLv2 or any later version. See COPYING\n");
printf("\n");
exit(0);
}
/**
* Parses the command line options.
*/
bool parse_options(int argc, char **argv) {
static struct option long_options[] = {
{"debug", 0, &loglevel, 1},
{"dryrun", 0, &flag_dryrun, 1},
{"exclude-from", 1, NULL, 0},
{"help", 0, NULL, 0},
{"logfile", 1, NULL, 0},
{"no-daemon", 0, &flag_nodaemon, 1},
{"rsync-binary", 1, NULL, 0},
{"scarce", 0, &loglevel, 3},
{"version", 0, NULL, 0},
{0, 0, 0, 0}
};
int c;
while (1) {
int oi = 0;
c = getopt_long_only(argc, argv, "", long_options, &oi);
if (c == -1) {
break;
}
if (c == '?') {
return false;
}
if (c == 0) { // longoption
if (!strcmp("help", long_options[oi].name)) {
print_help(argv[0]);
}
if (!strcmp("version", long_options[oi].name)) {
printf("Version: %d.%d\n", VER_MAJOR, VER_MINOR);
exit(0);
}
if (!strcmp("logfile", long_options[oi].name)) {
logfile = s_malloc(strlen(optarg) + 1);
strcpy(logfile, optarg);
}
if (!strcmp("exclude-from", long_options[oi].name)) {
exclude_file = s_malloc(strlen(optarg) + 1);
strcpy(exclude_file, optarg);
}
}
}
if (optind + 2 != argc) {
printf("Error: please specify SOURCE and TARGET (see --help)\n");
exit(-1);
}
option_source = argv[optind];
option_target = argv[optind + 1];
printf("syncing %s -> %s\n", option_source, option_target);
return true;
}
/**
* Parses the exclude file looking for directory masks to not watch.
*/
bool parse_exclude_file() {
FILE * ef;
char line[MAX_PATH];
int sl;
ef = fopen(exclude_file, "r");
if (ef == NULL) {
printlogf(LOG_ERROR, "Meh, cannot open open exclude file '%s'\n", exclude_file);
exit(-1);
}
while(1) {
if (!fgets(line, sizeof(line), ef)) {
if (feof(ef)) {
fclose(ef);
return true;
}
printlogf(LOG_ERROR, "Reading file '%s' (%d=%s)\n", exclude_file, errno, strerror(errno));
exit(-1);
}
sl = strlen(line);
if (sl == 0) {
continue;
}
if (line[sl - 1] == '\n') {
line[sl - 1] = 0;
sl--;
}
if (sl == 0) {
continue;
}
if (line[sl - 1] == '/') {
if (exclude_dir_n + 1 >= MAX_EXCLUDES) {
printlogf(LOG_ERROR, "Too many directory excludes, can only have %d at the most", MAX_EXCLUDES);
exit(-1);
}
line[sl - 1] = 0;
sl--;
if (sl == 0) {
continue;
}
printlogf(LOG_NORMAL, "Excluding directories of the name '%s'", line);
exclude_dirs[exclude_dir_n] = s_malloc(strlen(line) + 1);
strcpy(exclude_dirs[exclude_dir_n], line);
exclude_dir_n++;
}
}
return true;
}
/**
* main
*/
int main(int argc, char **argv) {
if (!parse_options(argc, argv)) {
return -1;
}
if (exclude_file) {
parse_exclude_file();
}
inotf = inotify_init();
if (inotf == -1) {
printlogf(LOG_ERROR, "Cannot create inotify instance! (%d:%s)", errno, strerror(errno));
return -1;
}
if (!flag_nodaemon) {
daemon(0, 0);
}
printlogf(LOG_NORMAL, "Starting up");
dir_watch_size = 2;
dir_watches = s_calloc(dir_watch_size, sizeof(struct dir_watch));
if (!strcmp(option_source, "%userwww")) {
printlogf(LOG_NORMAL, "do userwww");
scan_homes();
} else {
printlogf(LOG_NORMAL, "watching %s", option_source);
add_dirwatch(option_source, "", true, -1);
rsync(option_source, option_target, true);
}
printlogf(LOG_NORMAL, "---entering normal operation---");
signal(SIGTERM, catch_alarm);
master_loop();
return 0;
}

6871
ltmain.sh Normal file
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198
missing Executable file
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@ -0,0 +1,198 @@
#! /bin/sh
# Common stub for a few missing GNU programs while installing.
# Copyright (C) 1996, 1997, 2001, 2002 Free Software Foundation, Inc.
# Franc,ois Pinard <pinard@iro.umontreal.ca>, 1996.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
if test $# -eq 0; then
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
fi
# In the cases where this matters, `missing' is being run in the
# srcdir already.
if test -f configure.in; then
configure_ac=configure.ac
else
configure_ac=configure.in
fi
case "$1" in
-h|--h|--he|--hel|--help)
echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...
Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
error status if there is no known handling for PROGRAM.
Options:
-h, --help display this help and exit
-v, --version output version information and exit
Supported PROGRAM values:
aclocal touch file \`aclocal.m4'
autoconf touch file \`configure'
autoheader touch file \`config.h.in'
automake touch all \`Makefile.in' files
bison create \`y.tab.[ch]', if possible, from existing .[ch]
flex create \`lex.yy.c', if possible, from existing .c
lex create \`lex.yy.c', if possible, from existing .c
makeinfo touch the output file
yacc create \`y.tab.[ch]', if possible, from existing .[ch]"
;;
-v|--v|--ve|--ver|--vers|--versi|--versio|--version)
echo "missing - GNU libit 0.0"
;;
-*)
echo 1>&2 "$0: Unknown \`$1' option"
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
;;
aclocal*)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified \`acinclude.m4' or \`$configure_ac'. You might want
to install the \`Automake' and \`Perl' packages. Grab them from
any GNU archive site."
touch aclocal.m4
;;
autoconf)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified \`$configure_ac'. You might want to install the
\`Autoconf' and \`GNU m4' packages. Grab them from any GNU
archive site."
touch configure
;;
autoheader)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified \`acconfig.h' or \`$configure_ac'. You might want
to install the \`Autoconf' and \`GNU m4' packages. Grab them
from any GNU archive site."
files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' $configure_ac`
test -z "$files" && files="config.h"
touch_files=
for f in $files; do
case "$f" in
*:*) touch_files="$touch_files "`echo "$f" |
sed -e 's/^[^:]*://' -e 's/:.*//'`;;
*) touch_files="$touch_files $f.in";;
esac
done
touch $touch_files
;;
automake*)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified \`Makefile.am', \`acinclude.m4' or \`$configure_ac'.
You might want to install the \`Automake' and \`Perl' packages.
Grab them from any GNU archive site."
find . -type f -name Makefile.am -print |
sed 's/\.am$/.in/' |
while read f; do touch "$f"; done
;;
bison|yacc)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified a \`.y' file. You may need the \`Bison' package
in order for those modifications to take effect. You can get
\`Bison' from any GNU archive site."
rm -f y.tab.c y.tab.h
if [ $# -ne 1 ]; then
eval LASTARG="\${$#}"
case "$LASTARG" in
*.y)
SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
if [ -f "$SRCFILE" ]; then
cp "$SRCFILE" y.tab.c
fi
SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
if [ -f "$SRCFILE" ]; then
cp "$SRCFILE" y.tab.h
fi
;;
esac
fi
if [ ! -f y.tab.h ]; then
echo >y.tab.h
fi
if [ ! -f y.tab.c ]; then
echo 'main() { return 0; }' >y.tab.c
fi
;;
lex|flex)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified a \`.l' file. You may need the \`Flex' package
in order for those modifications to take effect. You can get
\`Flex' from any GNU archive site."
rm -f lex.yy.c
if [ $# -ne 1 ]; then
eval LASTARG="\${$#}"
case "$LASTARG" in
*.l)
SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
if [ -f "$SRCFILE" ]; then
cp "$SRCFILE" lex.yy.c
fi
;;
esac
fi
if [ ! -f lex.yy.c ]; then
echo 'main() { return 0; }' >lex.yy.c
fi
;;
makeinfo)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. You should only need it if
you modified a \`.texi' or \`.texinfo' file, or any other file
indirectly affecting the aspect of the manual. The spurious
call might also be the consequence of using a buggy \`make' (AIX,
DU, IRIX). You might want to install the \`Texinfo' package or
the \`GNU make' package. Grab either from any GNU archive site."
file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
if test -z "$file"; then
file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
fi
touch $file
;;
*)
echo 1>&2 "\
WARNING: \`$1' is needed, and you do not seem to have it handy on your
system. You might have modified some files without having the
proper tools for further handling them. Check the \`README' file,
it often tells you about the needed prerequirements for installing
this package. You may also peek at any GNU archive site, in case
some other package would contain this missing \`$1' program."
exit 1
;;
esac
exit 0

40
mkinstalldirs Executable file
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#! /bin/sh
# mkinstalldirs --- make directory hierarchy
# Author: Noah Friedman <friedman@prep.ai.mit.edu>
# Created: 1993-05-16
# Public domain
# $Id: mkinstalldirs,v 1.13 1999/01/05 03:18:55 bje Exp $
errstatus=0
for file
do
set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
shift
pathcomp=
for d
do
pathcomp="$pathcomp$d"
case "$pathcomp" in
-* ) pathcomp=./$pathcomp ;;
esac
if test ! -d "$pathcomp"; then
echo "mkdir $pathcomp"
mkdir "$pathcomp" || lasterr=$?
if test ! -d "$pathcomp"; then
errstatus=$lasterr
fi
fi
pathcomp="$pathcomp/"
done
done
exit $errstatus
# mkinstalldirs ends here