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Diffstat (limited to 'ChangeLog')
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@@ -1,4 +1,192 @@ --------------------------------------------------------------------------- +Version 4.5.8 [v4-beta] (rgerhards), 2010-01-?? +- bugfix: -d did not enable display of debug messages + regression from introduction of "debug on demand" mode + Thanks to Michael Biebl for reporting this bug +- bugfix: blanks inside file names did not terminate file name parsing. + This could reslult in the whole rest of a line (including comments) + to be treated as file name in "write to file" actions. + Thanks to Jack for reporting this issue. +- bugfix: rsyslog hang when writing to a named pipe which nobody was + reading. Thanks to Michael Biebl for reporting this bug. +- bugfix: memory leak when sending messages in zip-compressed format + Thanks to Naoya Nakazawa for analyzing this issue and providing a patch. +- bugfix: potential segfaults during queue shutdown + (bugs require certain non-standard settings to appear) + Thanks to varmojfekoj for the patch +--------------------------------------------------------------------------- +Version 4.5.7 [v4-beta] (rgerhards), 2009-11-18 +- added a so-called "On Demand Debug" mode, in which debug output can + be generated only after the process has started, but not right from + the beginning. This is assumed to be useful for hard-to-find bugs. + Also improved the doc on the debug system. +- bugfix (kind of): check if TCP connection is still alive if using TLS + Thanks to Jonathan Bond-Caron for the patch. +- bugfix: hostname accidently set to IP address for some message sources, + for example imudp. Thanks to Anton for reporting this bug. +- bugfix [imported from 4.4.3]: $ActionExecOnlyOnceEveryInterval did + not work. +--------------------------------------------------------------------------- +Version 4.5.6 [v4-beta] (rgerhards), 2009-11-05 +- bugfix: named pipes did no longer work (they always got an open error) + this was a regression from the omfile rewrite in 4.5.0 +- bugfix(minor): diag function returned wrong queue memeber count + for the main queue if an active DA queue existed. This had no relevance + to real deployments (assuming they are not running the debug/diagnostic + module...), but sometimes caused grief and false alerts in the + testbench. +- included some important fixes from v4-stable: + * bugfix: invalid handling of zero-sized messages + * bugfix: zero-sized UDP messages are no longer processed + * bugfix: random data could be appended to message + * bugfix: reverse lookup reduction logic in imudp do DNS queries too often +- bugfix(testbench): testcase did not properly wait for rsyslod shutdown + thus some unpredictable behavior and a false negative test result + could occur. [BACKPORTED from v5] +- bugfix(testbench): sequence check was not always performed correctly, + that could result in tests reporting success when they actually failed +--------------------------------------------------------------------------- +Version 4.5.5 [v4-beta] (rgerhards), 2009-10-21 +- added $InputTCPServerNotifyOnConnectionClose config directive + see doc for details +- bugfix: debug string larger than 1K were improperly displayed. Max size + is now 32K +- bugfix: invalid storage class selected for some size config parameters. + This resulted in wrong values. The most prominent victim was the + directory creation mode, which was set to zero in some cases. For + details, see related blog post: + http://blog.gerhards.net/2009/10/another-note-on-hard-to-find-bugs.html +--------------------------------------------------------------------------- +Version 4.5.4 [v4-beta] (rgerhards), 2009-09-29 +- bugfix: potential segfault in stream writer on destruction + Most severely affected omfile. The problem was that some buffers were + freed before the asynchronous writer thread was shut down. So the + writer thread accessed invalid data, which may even already be + overwritten. Symptoms (with omfile) were segfaults, grabled data + and files with random names placed around the file system (most + prominently into the root directory). Special thanks to Aaron for + helping to track this down. +- bugfix: potential race in object loader (obj.c) during use/release + of object interface +- bugfixes: potential problems in out file zip writer. Problems could + lead to abort and/or memory leak. The module is now hardened in a very + conservative way, which is sub-optimal from a performance point of view. + This should be improved if it has proven reliable in practice. +--------------------------------------------------------------------------- +Version 4.5.3 [v4-beta] (rgerhards), 2009-09-17 +- bugfix: repeated messages were incorrectly processed + this could lead to loss of the repeated message content. As a side- + effect, it could probably also be possible that some segfault occurs + (quite unlikely). The root cause was that some counters introduced + during the malloc optimizations were not properly duplicated in + MsgDup(). Note that repeated message processing is not enabled + by default. +- bugfix: message sanitation had some issues: + - control character DEL was not properly escaped + - NUL and LF characters were not properly stripped if no control + character replacement was to be done + - NUL characters in the message body were silently dropped (this was + a regeression introduced by some of the recent optimizations) +- bugfix: strings improperly reused, resulting in some message properties + be populated with strings from previous messages. This was caused by + an improper predicate check. [backported from v5] +- fixed some minor portability issues +- bugfix: reverse lookup reduction logic in imudp do DNS queries too often + [imported from 4.4.2] +--------------------------------------------------------------------------- +Version 4.5.2 [v4-beta] (rgerhards), 2009-08-21 +- legacy syslog parser changed so that it now accepts date stamps in + wrong case. Some devices seem to create them and I do not see any harm + in supporting that. +- added $InputTCPMaxListeners directive - permits to specify how many + TCP servers shall be possible (default is 20). +- bugfix: memory leak with some input modules. Those inputs that + use parseAndSubmitMsg() leak two small memory blocks with every message. + Typically, those process only relatively few messages, so the issue + does most probably not have any effect in practice. +- bugfix: if tcp listen port could not be created, no error message was + emitted +- bugfix: potential segfault in output file writer (omfile) + In async write mode, we use modular arithmetic to index the output + buffer array. However, the counter variables accidently were signed, + thus resulting in negative indizes after integer overflow. That in turn + could lead to segfaults, but was depending on the memory layout of + the instance in question (which in turn depended on a number of + variables, like compile settings but also configuration). The counters + are now unsigned (as they always should have been) and so the dangling + mis-indexing does no longer happen. This bug potentially affected all + installations, even if only some may actually have seen a segfault. +- bugfix: hostnames with dashes in them were incorrectly treated as + malformed, thus causing them to be treated as TAG (this was a regression + introduced from the "rfc3164 strict" change in 4.5.0). +--------------------------------------------------------------------------- +Version 4.5.1 [DEVEL] (rgerhards), 2009-07-15 +- CONFIG CHANGE: $HUPisRestart default is now "off". We are doing this + to support removal of restart-type HUP in v5. +- bugfix: fromhost-ip was sometimes truncated +- bugfix: potential segfault when zip-compressed syslog records were + received (double free) +- bugfix: properties inputname, fromhost, fromhost-ip, msg were lost when + working with disk queues +- performance enhancement: much faster, up to twice as fast (depending + on configuration) +- bugfix: abort condition when RecvFrom was not set and message reduction + was on. Happend e.g. with imuxsock. +- added $klogConsoleLogLevel directive which permits to set a new + console log level while rsyslog is active +- bugfix: message could be truncated after TAG, often when forwarding + This was a result of an internal processing error if maximum field + sizes had been specified in the property replacer. +- added ability for the TCP output action to "rebind" its send socket after + sending n messages (actually, it re-opens the connection, the name is + used because this is a concept very similiar to $ActionUDPRebindInterval). + New config directive $ActionSendTCPRebindInterval added for the purpose. + By default, rebinding is disabled. This is considered useful for load + balancers. +- testbench improvements +--------------------------------------------------------------------------- +Version 4.5.0 [DEVEL] (rgerhards), 2009-07-02 +- activation order of inputs changed, they are now activated only after + privileges are dropped. Thanks to Michael Terry for the patch. +- greatly improved performance +- greatly reduced memory requirements of msg object + to around half of the previous demand. This means that more messages can + be stored in core! Due to fewer cache misses, this also means some + performance improvement. +- improved config error messages: now contain a copy of the config line + that (most likely) caused the error +- reduced max value for $DynaFileCacheSize to 1,000 (the former maximum + of 10,000 really made no sense, even 1,000 is very high, but we like + to keep the user in control ;)). +- added capability to fsync() queue disk files for enhanced reliability + (also add's speed, because you do no longer need to run the whole file + system in sync mode) +- more strict parsing of the hostname in rfc3164 mode, hopefully + removes false positives (but may cause some trouble with hostname + parsing). For details, see this bug tracker: + http://bugzilla.adiscon.com/show_bug.cgi?id=126 +- omfile rewrite to natively support zip files (includes large extension + of the stream class) +- added configuration commands (see doc for explanations) + * $OMFileZipLevel + * $OMFileIOBufferSize + * $OMFileFlushOnTXEnd + * $MainMsgQueueSyncQueueFiles + * $ActionQueueSyncQueueFiles +- done some memory accesses explicitely atomic +- bugfix: subtle (and usually irrelevant) issue in timout processing + timeout could be one second too early if nanoseconds wrapped +- set a more sensible timeout for shutdow, now 1.5 seconds to complete + processing (this also removes those cases where the shutdown message + was not written because the termination happened before it) +- internal bugfix: object pointer was only reset to NULL when an object + was actually destructed. This most likely had no effect to existing code, + but it may also have caused trouble in remote cases. Similarly, the fix + may also cause trouble... +- bugfix: missing initialization during timestamp creation + This could lead to timestamps written in the wrong format, but not to + an abort +--------------------------------------------------------------------------- Version 4.4.3 [v4-stable] (rgerhards), 2009-10-?? - bugfix: $ActionExecOnlyOnceEveryInterval did not work. This was a regression from the time() optimizations done in v4. |