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Remove historical changelogs from files

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We don't need to carry it any longer.  Anyone who wants to read them can
access an older GIT version, or released tarball.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
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Joachim Nilsson
2019-10-27 21:30:03 +01:00
parent 0603849891
commit bf448fc6a1
9 changed files with 0 additions and 918 deletions
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src/syslogd.c
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@ -48,479 +48,6 @@ static char sccsid[] __attribute__((unused)) =
* To kill syslogd, send a signal 15 (terminate). A signal 1 (hup) will
* cause it to reread its configuration file.
*
* Defined Constants:
*
* MAXLINE -- the maximum line length that can be handled.
* DEFUPRI -- the default priority for user messages
* DEFSPRI -- the default priority for kernel messages
*
* Author: Eric Allman
* extensive changes by Ralph Campbell
* more extensive changes by Eric Allman (again)
*
* Steve Lord: Fix UNIX domain socket code, added linux kernel logging
* change defines to
* SYSLOG_INET - listen on a UDP socket
* SYSLOG_UNIXAF - listen on unix domain socket
* SYSLOG_KERNEL - listen to linux kernel
*
* Mon Feb 22 09:55:42 CST 1993: Dr. Wettstein
* Additional modifications to the source. Changed priority scheme
* to increase the level of configurability. In its stock configuration
* syslogd no longer logs all messages of a certain priority and above
* to a log file. The * wildcard is supported to specify all priorities.
* Note that this is a departure from the BSD standard.
*
* Syslogd will now listen to both the inetd and the unixd socket. The
* strategy is to allow all local programs to direct their output to
* syslogd through the unixd socket while the program listens to the
* inetd socket to get messages forwarded from other hosts.
*
* Fri Mar 12 16:55:33 CST 1993: Dr. Wettstein
* Thanks to Stephen Tweedie (dcs.ed.ac.uk!sct) for helpful bug-fixes
* and an enlightened commentary on the prioritization problem.
*
* Changed the priority scheme so that the default behavior mimics the
* standard BSD. In this scenario all messages of a specified priority
* and above are logged.
*
* Add the ability to specify a wildcard (=) as the first character
* of the priority name. Doing this specifies that ONLY messages with
* this level of priority are to be logged. For example:
*
* *.=debug /usr/adm/debug
*
* Would log only messages with a priority of debug to the /usr/adm/debug
* file.
*
* Providing an * as the priority specifies that all messages are to be
* logged. Note that this case is degenerate with specifying a priority
* level of debug. The wildcard * was retained because I believe that
* this is more intuitive.
*
* Thu Jun 24 11:34:13 CDT 1993: Dr. Wettstein
* Modified sources to incorporate changes in libc4.4. Messages from
* syslog are now null-terminated, syslogd code now parses messages
* based on this termination scheme. Linux as of libc4.4 supports the
* fsync system call. Modified code to fsync after all writes to
* log files.
*
* Sat Dec 11 11:59:43 CST 1993: Dr. Wettstein
* Extensive changes to the source code to allow compilation with no
* complaints with -Wall.
*
* Reorganized the facility and priority name arrays so that they
* compatible with the syslog.h source found in /usr/include/syslog.h.
* NOTE that this should really be changed. The reason I do not
* allow the use of the values defined in syslog.h is on account of
* the extensions made to allow the wildcard character in the
* priority field. To fix this properly one should malloc an array,
* copy the contents of the array defined by syslog.h and then
* make whatever modifications that are desired. Next round.
*
* Thu Jan 6 12:07:36 CST 1994: Dr. Wettstein
* Added support for proper decomposition and re-assembly of
* fragment messages on UNIX domain sockets. Lack of this capability
* was causing 'partial' messages to be output. Since facility and
* priority information is encoded as a leader on the messages this
* was causing lines to be placed in erroneous files.
*
* Also added a patch from Shane Alderton (shane@ion.apana.org.au) to
* correct a problem with syslogd dumping core when an attempt was made
* to write log messages to a logged-on user. Thank you.
*
* Many thanks to Juha Virtanen (jiivee@hut.fi) for a series of
* interchanges which lead to the fixing of problems with messages set
* to priorities of none and emerg. Also thanks to Juha for a patch
* to exclude users with a class of LOGIN from receiving messages.
*
* Shane Alderton provided an additional patch to fix zombies which
* were conceived when messages were written to multiple users.
*
* Mon Feb 6 09:57:10 CST 1995: Dr. Wettstein
* Patch to properly reset the single priority message flag. Thanks
* to Christopher Gori for spotting this bug and forwarding a patch.
*
* Wed Feb 22 15:38:31 CST 1995: Dr. Wettstein
* Added version information to startup messages.
*
* Added defines so that paths to important files are taken from
* the definitions in paths.h. Hopefully this will insure that
* everything follows the FSSTND standards. Thanks to Chris Metcalf
* for a set of patches to provide this functionality. Also thanks
* Elias Levy for prompting me to get these into the sources.
*
* Wed Jul 26 18:57:23 MET DST 1995: Martin Schulze
* Linux' gethostname only returns the hostname and not the fqdn as
* expected in the code. But if you call hostname with an fqdn then
* gethostname will return an fqdn, so we have to mention that. This
* has been changed.
*
* The 'LocalDomain' and the hostname of a remote machine is
* converted to lower case, because the original caused some
* inconsistency, because the (at least my) nameserver did respond an
* fqdn containing of upper- _and_ lowercase letters while
* 'LocalDomain' consisted only of lowercase letters and that didn't
* match.
*
* Sat Aug 5 18:59:15 MET DST 1995: Martin Schulze
* Now no messages that were received from any remote host are sent
* out to another. At my domain this missing feature caused ugly
* syslog-loops, sometimes.
*
* Remember that no message is sent out. I can't figure out any
* scenario where it might be useful to change this behavior and to
* send out messages to other hosts than the one from which we
* received the message, but I might be shortsighted. :-/
*
* Thu Aug 10 19:01:08 MET DST 1995: Martin Schulze
* Added my pidfile.[ch] to it to perform a better handling with
* pidfiles. Now both, syslogd and klogd, can only be started
* once. They check the pidfile.
*
* Sun Aug 13 19:01:41 MET DST 1995: Martin Schulze
* Add an addition to syslog.conf's interpretation. If a priority
* begins with an exclamation mark ('!') the normal interpretation
* of the priority is inverted: ".!*" is the same as ".none", ".!=info"
* don't logs the info priority, ".!crit" won't log any message with
* the priority crit or higher. For example:
*
* mail.*;mail.!=info /usr/adm/mail
*
* Would log all messages of the facility mail except those with
* the priority info to /usr/adm/mail. This makes the syslogd
* much more flexible.
*
* Defined TABLE_ALLPRI=255 and changed some occurrences.
*
* Sat Aug 19 21:40:13 MET DST 1995: Martin Schulze
* Making the table of facilities and priorities while in debug
* mode more readable.
*
* If debugging is turned on, printing the whole table of
* facilities and priorities every hexadecimal or 'X' entry is
* now 2 characters wide.
*
* The number of the entry is prepended to each line of
* facilities and priorities, and F_UNUSED lines are not shown
* anymore.
*
* Corrected some #ifdef SYSV's.
*
* Mon Aug 21 22:10:35 MET DST 1995: Martin Schulze
* Corrected a strange behavior during parsing of configuration
* file. The original BSD syslogd doesn't understand spaces as
* separators between specifier and action. This syslogd now
* understands them. The old behavior caused some confusion over
* the Linux community.
*
* Thu Oct 19 00:02:07 MET 1995: Martin Schulze
* The default behavior has changed for security reasons. The
* syslogd will not receive any remote message unless you turn
* reception on with the "-r" option.
*
* Not defining SYSLOG_INET will result in not doing any network
* activity, i.e. not sending or receiving messages. I changed
* this because the old idea is implemented with the "-r" option
* and the old thing didn't work anyway.
*
* Thu Oct 26 13:14:06 MET 1995: Martin Schulze
* Added another logfile type F_FORW_UNKN. The problem I ran into
* was a name server that runs on my machine and a forwarder of
* kern.crit to another host. The hosts address can only be
* fetched using the nameserver. But named is started after
* syslogd, so syslogd complained.
*
* This logfile type will retry to get the address of the
* hostname ten times and then complain. This should be enough to
* get the named up and running during boot sequence.
*
* Fri Oct 27 14:08:15 1995: Dr. Wettstein
* Changed static array of logfiles to a dynamic array. This
* can grow during process.
*
* Fri Nov 10 23:08:18 1995: Martin Schulze
* Inserted a new tabular sys_h_errlist that contains plain text
* for error codes that are returned from the net subsystem and
* stored in h_errno. I have also changed some wrong lookups to
* sys_errlist.
*
* Wed Nov 22 22:32:55 1995: Martin Schulze
* Added the fabulous strip-domain feature that allows us to
* strip off (several) domain names from the fqdn and only log
* the simple hostname. This is useful if you're in a LAN that
* has a central log server and also different domains.
*
* I have also also added the -l switch do define hosts as
* local. These will get logged with their simple hostname, too.
*
* Thu Nov 23 19:02:56 MET DST 1995: Martin Schulze
* Added the possibility to omit fsyncing of logfiles after every
* write. This will give some performance back if you have
* programs that log in a very verbose manner (like innd or
* smartlist). Thanks to Stephen R. van den Berg <srb@cuci.nl>
* for the idea.
*
* Thu Jan 18 11:14:36 CST 1996: Dr. Wettstein
* Added patche from beta-testers to stop compile error. Also
* added removal of pid file as part of termination cleanup.
*
* Wed Feb 14 12:42:09 CST 1996: Dr. Wettstein
* Allowed forwarding of messages received from remote hosts to
* be controlled by a command-line switch. Specifying -h allows
* forwarding. The default behavior is to disable forwarding of
* messages which were received from a remote host.
*
* Parent process of syslogd does not exit until child process has
* finished initialization process. This allows rc.* startup to
* pause until syslogd facility is up and operating.
*
* Re-arranged the select code to move UNIX domain socket accepts
* to be processed later. This was a contributed change which
* has been proposed to correct the delays sometimes encountered
* when syslogd starts up.
*
* Minor code cleanups.
*
* Thu May 2 15:15:33 CDT 1996: Dr. Wettstein
* Fixed bug in init function which resulted in file descripters
* being orphaned when syslogd process was re-initialized with SIGHUP
* signal. Thanks to Edvard Tuinder
* (Edvard.Tuinder@praseodymium.cistron.nl) for putting me on the
* trail of this bug. I am amazed that we didn't catch this one
* before now.
*
* Tue May 14 00:03:35 MET DST 1996: Martin Schulze
* Corrected a mistake that causes the syslogd to stop logging at
* some virtual consoles under Linux. This was caused by checking
* the wrong error code. Thanks to Michael Nonweiler
* <mrn20@hermes.cam.ac.uk> for sending me a patch.
*
* Mon May 20 13:29:32 MET DST 1996: Miquel van Smoorenburg <miquels@cistron.nl>
* Added continuation line supported and fixed a bug in
* the init() code.
*
* Tue May 28 00:58:45 MET DST 1996: Martin Schulze
* Corrected behaviour of blocking pipes - i.e. the whole system
* hung. Michael Nonweiler <mrn20@hermes.cam.ac.uk> has sent us
* a patch to correct this. A new logfile type F_PIPE has been
* introduced.
*
* Mon Feb 3 10:12:15 MET DST 1997: Martin Schulze
* Corrected behaviour of logfiles if the file can't be opened.
* There was a bug that causes syslogd to try to log into non
* existing files which ate cpu power.
*
* Sun Feb 9 03:22:12 MET DST 1997: Martin Schulze
* Modified syslogd.c to not kill itself which confuses bash 2.0.
*
* Mon Feb 10 00:09:11 MET DST 1997: Martin Schulze
* Improved debug code to decode the numeric facility/priority
* pair into textual information.
*
* Tue Jun 10 12:35:10 MET DST 1997: Martin Schulze
* Corrected freeing of logfiles. Thanks to Jos Vos <jos@xos.nl>
* for reporting the bug and sending an idea to fix the problem.
*
* Tue Jun 10 12:51:41 MET DST 1997: Martin Schulze
* Removed sleep(10) from parent process. This has caused a slow
* startup in former times - and I don't see any reason for this.
*
* Sun Jun 15 16:23:29 MET DST 1997: Michael Alan Dorman
* Some more glibc patches made by <mdorman@debian.org>.
*
* Thu Jan 1 16:04:52 CET 1998: Martin Schulze <joey@infodrom.north.de
* Applied patch from Herbert Thielen <Herbert.Thielen@lpr.e-technik.tu-muenchen.de>.
* This included some balance parentheses for emacs and a bug in
* the exclamation mark handling.
*
* Fixed small bug which caused syslogd to write messages to the
* wrong logfile under some very rare conditions. Thanks to
* Herbert Xu <herbert@gondor.apana.org.au> for fiddling this out.
*
* Thu Jan 8 22:46:35 CET 1998: Martin Schulze <joey@infodrom.north.de>
* Reworked one line of the above patch as it prevented syslogd
* from binding the socket with the result that no messages were
* forwarded to other hosts.
*
* Sat Jan 10 01:33:06 CET 1998: Martin Schulze <joey@infodrom.north.de>
* Fixed small bugs in F_FORW_UNKN meachanism. Thanks to Torsten
* Neumann <torsten@londo.rhein-main.de> for pointing me to it.
*
* Mon Jan 12 19:50:58 CET 1998: Martin Schulze <joey@infodrom.north.de>
* Modified debug output concerning remote receiption.
*
* Mon Feb 23 23:32:35 CET 1998: Topi Miettinen <Topi.Miettinen@ml.tele.fi>
* Re-worked handling of Unix and UDP sockets to support closing /
* opening of them in order to have it open only if it is needed
* either for forwarding to a remote host or by receiption from
* the network.
*
* Wed Feb 25 10:54:09 CET 1998: Martin Schulze <joey@infodrom.north.de>
* Fixed little comparison mistake that prevented the MARK
* feature to work properly.
*
* Wed Feb 25 13:21:44 CET 1998: Martin Schulze <joey@infodrom.north.de>
* Corrected Topi's patch as it prevented forwarding during
* startup due to an unknown LogPort.
*
* Sat Oct 10 20:01:48 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Added support for TESTING define which will turn syslogd into
* stdio-mode used for debugging.
*
* Sun Oct 11 20:16:59 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Reworked the initialization/fork code. Now the parent
* process activates a signal handler which the daughter process
* will raise if it is initialized. Only after that one the
* parent process may exit. Otherwise klogd might try to flush
* its log cache while syslogd can't receive the messages yet.
*
* Mon Oct 12 13:30:35 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Redirected some error output with regard to argument parsing to
* stderr.
*
* Mon Oct 12 14:02:51 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Applied patch provided vom Topi Miettinen with regard to the
* people from OpenBSD. This provides the additional '-a'
* argument used for specifying additional UNIX domain sockets to
* listen to. This is been used with chroot()'ed named's for
* example. See for http://www.psionic.com/papers/dns.html
*
* Mon Oct 12 18:29:44 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Added `ftp' facility which was introduced in glibc version 2.
* It's #ifdef'ed so won't harm with older libraries.
*
* Mon Oct 12 19:59:21 MET DST 1998: Martin Schulze <joey@infodrom.north.de>
* Code cleanups with regard to bsd -> posix transition and
* stronger security (buffer length checking). Thanks to Topi
* Miettinen <tom@medialab.sonera.net>
* . index() --> strchr()
* . sprintf() --> snprintf()
* . bcopy() --> memcpy()
* . bzero() --> memset()
* . UNAMESZ --> UT_NAMESIZE
* . sys_errlist --> strerror()
*
* Mon Oct 12 20:22:59 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Added support for setutent()/getutent()/endutend() instead of
* binary reading the UTMP file. This is the the most portable
* way. This allows /var/run/utmp format to change, even to a
* real database or utmp daemon. Also if utmp file locking is
* implemented in libc, syslog will use it immediately. Thanks
* to Topi Miettinen <tom@medialab.sonera.net>.
*
* Mon Oct 12 20:49:18 MET DST 1998: Martin Schulze <joey@infodrom.north.de>
* Avoid logging of SIGCHLD when syslogd is in the process of
* exiting and closing its files. Again thanks to Topi.
*
* Mon Oct 12 22:18:34 CEST 1998: Martin Schulze <joey@infodrom.north.de>
* Modified printline() to support 8bit characters - such as
* russion letters. Thanks to Vladas Lapinskas <lapinskas@mail.iae.lt>.
*
* Sat Nov 14 02:29:37 CET 1998: Martin Schulze <joey@infodrom.north.de>
* ``-m 0'' now turns of MARK logging entirely.
*
* Tue Jan 19 01:04:18 MET 1999: Martin Schulze <joey@infodrom.north.de>
* Finally fixed an error with `-a' processing, thanks to Topi
* Miettinen <tom@medialab.sonera.net>.
*
* Sun May 23 10:08:53 CEST 1999: Martin Schulze <joey@infodrom.north.de>
* Removed superflous call to utmpname(). The path to the utmp
* file is defined in the used libc and should not be hardcoded
* into the syslogd binary referring the system it was compiled on.
*
* Sun Sep 17 21:26:16 CEST 2000: Martin Schulze <joey@infodrom.ffis.de>
* Don't close open sockets upon reload. Thanks to Bill
* Nottingham.
*
* Mon Sep 18 09:10:47 CEST 2000: Martin Schulze <joey@infodrom.ffis.de>
* Fixed bug in printchopped() that caused syslogd to emit
* kern.emerg messages when splitting long lines. Thanks to
* Daniel Jacobowitz <dan@debian.org> for the fix.
*
* Mon Sep 18 15:33:26 CEST 2000: Martin Schulze <joey@infodrom.ffis.de>
* Removed unixm/unix domain sockets and switch to Datagram Unix
* Sockets. This should remove one possibility to play DoS with
* syslogd. Thanks to Olaf Kirch <okir@caldera.de> for the patch.
*
* Sun Mar 11 20:23:44 CET 2001: Martin Schulze <joey@infodrom.ffis.de>
* Don't return a closed fd if `-a' is called with a wrong path.
* Thanks to Bill Nottingham <notting@redhat.com> for providing
* a patch.
* Thu Apr 13 05:08:10 CEST 2001: Jon Burgess <Jon_Burgess@eur.3com.com>
* Moved the installation of the signal handler up a little bit
* so it guaranteed to be available when the child is forked,
* hence, fixing a race condition. This used to create problems
* with UML and fast machines.
*
* Sat Apr 17 18:03:05 CEST 2004: Steve Grubb <linux_4ever@yahoo.com>
* Correct memory allocation for for commandline arguments in
* crunch_list().
*
* Thu Apr 29 12:38:39 CEST 2004: Solar Designer <solar@openwall.com>
* Applied Openwall paranoia patches to improve crunch_list().
*
* Tue May 4 16:47:30 CEST 2004: Solar Designer <solar@openwall.com>
* Ensure that "len" is not placed in a register, and that the
* endtty() signal handler is not installed too early which could
* cause a segmentation fault or worse.
*
* Tue May 4 16:52:01 CEST 2004: Solar Designer <solar@openwall.com>
* Adjust the size of a variable to prevent a buffer overflow
* should _PATH_DEV ever contain something different than "/dev/".
*
* Tue Nov 2 20:28:23 CET 2004: Colin Phipps <cph@cph.demon.co.uk>
* Don't block on the network socket, in case a packet gets lost
* between select and recv.
*
* Sun Nov 7 12:28:47 CET 2004: Martin Schulze <joey@infodrom.org>
* Discard any timestamp information found in received syslog
* messages. This will affect local messages sent from a
* different timezone.
*
* Sun Nov 7 13:47:00 CET 2004: Martin Schulze <joey@infodrom.org>
* Remove trailing newline when forwarding messages.
*
* Thu May 25 09:47:38 CEST 2006: Martin Schulze <joey@infodrom.org>
* Reset the 'restart' flag immediately after entering the
* restart code, so that subsequent SIGHUPs are able to set it
* again and cause a new restart. This fixes a race condition
* when somebody sends tons of HUP signals.
*
* Thu May 24 15:24:49 CEST 2007: Martin Schulze <joey@infodrom.org>
* Ignore errors caused by filled up disks so that the log
* continues to be written as soon as space becomes available
* again.
*
* Sat May 26 10:05:05 CEST 2007: Martin Schulze <joey@infodrom.org>
* Only try to gather the local domain name when messages are to
* be received from the network, it's not needed otherwise.
*
* Sat May 26 12:22:44 CEST 2007: Martin Schulze <joey@infodrom.org>
* Properly accompany the MARK message with the facility.
*
* Mon May 28 19:44:39 CEST 2007: Martin Schulze <joey@infodrom.org>
* Notify the waiting parent process if the client dies to it
* doesn't wait the entire five minutes.
*
* Wed Jul 4 21:02:22 CEST 2007: Martin Schulze <joey@infodrom.org>
* Open a pipe with O_NOCTTY to avoid them becoming the controlling
* tty and normal files with O_NONBLOCK to avoid blocking.
*
* Fri Oct 26 17:21:15 CEST 2007: Thomas Jarosch <thomas.jarosch@intra2net.com>
* Move hostname setting code from main() into init().
*
* Wed May 7 21:00:39 CEST 2007: Martin Schulze <joey@infodrom.org>
* Make sure that the service name is only queried, when it is needed,
* i.e. when we are sending to or receiving from the network.
*
* Sun Oct 11 11:28:07 CEST 2009: Joachim Nilsson <troglobit@gmail.com>
* Port log rotation from BusyBox syslogd. This adds -b and -c
* options for size and rotate count. Disabled by default.
*
* Fri Sep 10 08:29:04 CEST 2010: Martin Schulze <joey@infodrom.org>
* Replace strcpy with memmove to fix continuation line problems
* on 64bit architectures, patch by David Couture.
*/
#define MAXLINE 1024 /* maximum line length */