librsync(3) [debian man page]

librsync(3)						     Library Functions Manual						       librsync(3)

NAME

       librsync - library for delta compression of streams

SYNOPSYS

	#include <stdio.h>
	#include <stdlib.h>
	#include <librsync.h>

	cc ... -lrsync

DESCRIPTION

       The  librsync library implements network delta-compression of streams and files.  The algorithm is similar to that used in the rsync(1) and
       xdelta(2) programs, but specialized for transfer of arbitrary-length octet streams.  Unlike most diff programs, librsync does  not  require
       access to both of the files on the same machine, but rather only a short ``signature'' of the old file and the complete contents of the new
       file.

       The canonical use of librsync is in the rproxy(8) reference implementation of the rsync proposed extension to HTTP.  It may  be	useful	to
       other  programs which wish to do delta-compression in HTTP, or within their own protocol.  There are HTTP-specific utility functions within
       librsync, but they need not be used.

       A number of tools such as rdiff(1) provide command-line and scriptable access to rsync functions.

SEE ALSO

       rdiff(1)

       rdiff and librsync Manual

       http://rproxy.sourceforge.net/.

       draft-pool-rsync

BUGS

       The rsync protocol is still evolving.  There may be bugs in the implementation.	The interface may change in the future, but it is becoming
       more stable.

       Many  routines  will panic in case of error rather than returning an error code to the caller.  Patches to fix this are welcome, but at the
       current state of development aborting seems as useful as trusting to possibly-incomplete checking in the client.

AUTHOR

       Martin Pool <mbp@samba.org>, with Andrew Tridgell <tridge@samba.org>.

       rdiff development has been supported by Linuxcare, Inc and VA Linux Systems.

Martin Pool						   $Date: 2003/06/12 06:03:32 $ 					       librsync(3)

rsync_selinux(8)					rsync Selinux Policy documentation					  rsync_selinux(8)

NAME

       rsync_selinux - Security Enhanced Linux Policy for the rsync daemon

DESCRIPTION

       Security-Enhanced Linux secures the rsync server via flexible mandatory access control.

FILE_CONTEXTS
       SELinux	requires  files to have an extended attribute to define the file type.	Policy governs the access daemons have to these files.	If
       you want to share files using the rsync daemon, you must label the files and directories public_content_t.  So if  you  created	a  special
       directory /var/rsync, you would need to label the directory with the chcon tool.

       chcon -t public_content_t /var/rsync

       To make this change permanent (survive a relabel), use the semanage command to add the change to file context configuration:

       semanage fcontext -a -t public_content_t "/var/rsync(/.*)?"

       This command adds the following entry to /etc/selinux/POLICYTYPE/contexts/files/file_contexts.local:

       /var/rsync(/.*)? system_u:object_r:publix_content_t:s0

       Run the restorecon command to apply the changes:

       restorecon -R -v /var/rsync/

SHARING FILES

       If  you	want  to  share  files	with multiple domains (Apache, FTP, rsync, Samba), you can set a file context of public_content_t and pub-
       lic_content_rw_t.  These context allow any of the above domains to read the content.  If you want a particular domain to write to the  pub-
       lic_content_rw_t domain, you must set the appropriate boolean.  allow_DOMAIN_anon_write.  So for rsync you would execute:

       setsebool -P allow_rsync_anon_write=1

BOOLEANS

       system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR

       This manual page was written by Dan Walsh <dwalsh@redhat.com>.

SEE ALSO

       selinux(8), rsync(1), chcon(1), setsebool(8), semanage(8)

dwalsh@redhat.com						    17 Jan 2005 						  rsync_selinux(8)