[Scroll down for 21-27] [Also, I forgot to mention in my last mail that I haven't yet created a stylesheet for the new HTML summaries, so they look pretty bare. If you have the inclination, by all means please submit one, or I'll make one in the next couple of days.] FreeBSD cvs-src summary for 2004-12-14 to 2004-12-20 ++++++++++++++++++++++++++++++++++++++++++++++++++++ This is a regular weekly summary of FreeBSD's cutting-edge development. It is intended to help the FreeBSD community keep up with the fast-paced work going on in FreeBSD-CURRENT by distilling the deluge of data from the CVS mailing list into a (hopefully) easy-to-read newsletter. You can get old summaries, and an HTML version of this one, at http://www.xl0.org/FreeBSD/. Please send any comments to Mark Johnston (mark at xl0.org). ============ New Features ============ Improvements to jail startup/shutdown ------------------------------------- Ralf S. Engelschall (rse) updated the jail[1] subsystem to improve the startup and shutdown of jails. He added an rc.conf[2] variable named jail_<name>_exec_stop that contains a command to be run when the jail is stopped; this matches jail_<name>_exec_start, which is run when the jail starts. [1] http://www.freebsd.org/cgi/man.cgi?query=jail&apropos=0&sektion=8&manpath=FreeBSD+6.0-current&format=html [2] http://www.freebsd.org/cgi/man.cgi?query=rc.conf&apropos=0&sektion=5&manpath=FreeBSD+6.0-current&format=html http://www.freebsd.org/cgi/mid.cgi?200412141436.iBEEaZ66050476 Pinnacle PCTV Rave cards supported ---------------------------------- Julian Elischer (julian) committed Branko Lankester's patches to the bktr[1] driver, for TV input cards, to support the Pinnacle PCTV Rave card. [1] http://www.freebsd.org/cgi/man.cgi?query=bktr&apropos=0&sektion=4&manpath=FreeBSD+6.0-current&format=html Submitted by: Branko Lankester PR: 73669 (http://www.freebsd.org/cgi/query-pr.cgi?pr=73669) http://www.freebsd.org/cgi/mid.cgi?200412162337.iBGNbgmQ075418 Initial NFS Direct I/O support ------------------------------ Paul Saab (ps) committed initial support for NFS Network File System Direct I/O. Direct I/O disables all caching in the NFS client, which is useful for programs that do their own caching, like clustered database servers, or applications that have no use for caching, like streaming video. Submitted by: Mohan Srinivasan http://www.freebsd.org/cgi/mid.cgi?200412152220.iBFMKMKa081446 ================= Discussion Topics ================= Sorting of make.conf variables ------------------------------ Tom Rhodes (trhodes) added a couple of options to make.conf[1], also re-sorting the file. Ruslan Ermilov (ru) replied that Tom's change had actually unsorted the list, and that it should be in dictionary order. After some discussion, Tom committed a patch that Ruslan had developed to restore the sorting to its previous state. [1] http://www.freebsd.org/cgi/man.cgi?query=make.conf&apropos=0&sektion=5&manpath=FreeBSD+6.0-current&format=html http://www.freebsd.org/cgi/mid.cgi?200412150210.iBF2AodY094280 Working towards packaging the base system ----------------------------------------- Paul Richards (paul) committed code that lays out a base for packaging the base system. Colin Percival (cperciva) replied, noting that Colin had been working on similar patches as well. They were joined by Ruslan Ermilov (ru) and John Baldwin (jhb), and they briefly discussed the benefits of each method. http://www.freebsd.org/cgi/mid.cgi?200412201546.iBKFkuTK047592 ================= Committer Changes ================= Sam Hopkins (sah) has joined the project as a src committer. He will be working on integrating his ATA-over-Ethernet code, among other things. Scott Long (scottl) will be his mentor. http://www.freebsd.org/cgi/mid.cgi?200412150804.iBF84Fdj021038 Daniel Hartmeier (dhartmei) is no longer under mentorship. http://www.freebsd.org/cgi/mid.cgi?200412160224.iBG2OxP6096193 =================== Important Bug Fixes =================== Potential system lockup in pf fixed ----------------------------------- Daniel Hartmeier (dhartmei) fixed a bug in PF[1], the OpenBSD packet filter, that could result in an infinite loop and system hang when using NAT Network Address Translation with the static-port directive. This may be exploitable by LAN clients in a NAT configuration to lock up the system. [1] http://www.freebsd.org/cgi/man.cgi?query=pf&apropos=0&sektion=4&manpath=FreeBSD+6.0-current&format=html Reported by: Hugo Silva, Srebrenco Sehic PR: 74930 (http://www.freebsd.org/cgi/query-pr.cgi?pr=74930) http://www.freebsd.org/cgi/mid.cgi?200412191943.iBJJh4Mr070637 =============== Other Bug Fixes =============== Darren Reed (darrenr) committed a fix to IPFilter[1] to a bug that was causing IPv6 path MTU (Maximum Transmission Unit, The maximum size of a packet that can be sent across a given link or path) discovery to fail, by blocking the outgoing notifications of too-large packets. The bug was also fixed in RELENG_4 and RELENG_5. [1] http://www.freebsd.org/cgi/man.cgi?query=ipf&apropos=0&sektion=8&manpath=FreeBSD+6.0-current&format=html Submitted by: Mark Andrews PR: 70399 (http://www.freebsd.org/cgi/query-pr.cgi?pr=70399) http://www.freebsd.org/cgi/mid.cgi?200412162102.iBGL2GCT069715 Maxim Konovalov (maxim) committed a fix to repquota[1], a disk quota reporting tool, so that its output can properly be sorted with sort[2]. Previously, usernames of the maximum length would run into the quota and break sorting. [1] http://www.freebsd.org/cgi/man.cgi?query=repquota&apropos=0&sektion=8&manpath=FreeBSD+6.0-current&format=html [2] http://www.freebsd.org/cgi/man.cgi?query=sort&apropos=0&sektion=1&manpath=FreeBSD+6.0-current&format=html Submitted by: Matthew D. Fuller PR: 75259 (http://www.freebsd.org/cgi/query-pr.cgi?pr=75259) http://www.freebsd.org/cgi/mid.cgi?200412191802.iBJI2jUp066876 FreeBSD cvs-src summary for 2004-12-21 to 2004-12-27 ++++++++++++++++++++++++++++++++++++++++++++++++++++ This is a regular weekly summary of FreeBSD's cutting-edge development. It is intended to help the FreeBSD community keep up with the fast-paced work going on in FreeBSD-CURRENT by distilling the deluge of data from the CVS mailing list into a (hopefully) easy-to-read newsletter. You can get old summaries, and an HTML version of this one, at http://www.xl0.org/FreeBSD/. Please send any comments to Mark Johnston (mark at xl0.org). ============ New Features ============ IPFilter gains fine-grained locking ----------------------------------- Darren Reed (darrenr) added fine-grained locking to IPFilter[1], one of the system firewalls, to enable it to run without the Giant system lock. This should improve firewall performance, especially on multiprocessor machines. [1] http://www.freebsd.org/cgi/man.cgi?query=ipf&apropos=0&sektion=5&manpath=FreeBSD+6.0-current&format=html http://www.freebsd.org/cgi/mid.cgi?200412240914.iBO9EQwi030378 Enhancements to USB audio ------------------------- Julian Elischer (julian) committed several patches from Kazuhito Honda, originally obtained from NetBSD, to drastically improve USB audio support. USB audio should now support multiple volume controls and, on some devices, recording, and should no longer break when audio data is fed in with an incorrect sampling rate. Submitted by: Kazuhito Honda PR: 75274 (http://www.freebsd.org/cgi/query-pr.cgi?pr=75274) http://www.freebsd.org/cgi/mid.cgi?200412250620.iBP6Ko2q007287 New scheduler analysis tool --------------------------- Jeff Roberson (jeff) committed a new tool called schedgraph.py. It takes trace output generated by the system scheduler and displays details on what different threads are doing at different times. Jeff reported shortly afterwards that schedgraph.py had already paid off in the form of a significant process-switching performance improvement. http://www.freebsd.org/cgi/mid.cgi?200412260013.iBQ0D7AF074474 =============== Notable Changes =============== NOxxx variables become NO_xxx ----------------------------- Ruslan Ermilov (ru) made sweeping commits to change all NO<xxx> variables, usually used when compiling to include or exclude parts of the system, to be named NO_<xxx>. Previously, many variables used each form, and there was no way to tell which should be used. The variables currently affected are: NOATM NOCLEAN NOCLEANDIR NOCRYPT NODOCCOMPRESS NOEXTRADEPEND NOFORTH NOFSCHG NOGAMES NOHTML NOINET6 NOINFO NOINFOCOMPRESS NOINSTALLLIB NOIPSEC NOLIBC_R NOLIBPTHREAD NOLIBTHR NOLINT NOMAN NOMANCOMPRESS NOMLINKS NOOBJ NOPAM NOPIC NOPROFILE NOSHARE NOSHARED NOTAGS All of these have simply had an underscore added after the initial NO. For an up-to-date list, see /usr/share/mk/bsd.compat.mk[1]. The build options for ppp[2] have also been changed to prepend PPP so they can be used in make.conf.[3] [1] http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/share/mk/bsd.compat.mk [2] http://www.freebsd.org/cgi/man.cgi?query=ppp&apropos=0&sektion=8&manpath=FreeBSD+6.0-current&format=html [3] http://www.freebsd.org/cgi/man.cgi?query=make.conf&apropos=0&sektion=5&manpath=FreeBSD+6.0-current&format=html http://www.freebsd.org/cgi/mid.cgi?200412210847.iBL8lZdJ029897 ================= Discussion Topics ================= Running out of KTRs ------------------- Jeff Roberson (jeff) added a KTR Kernel tracing identifier for his above-mentioned schedule analysis tool. This prompted some discussion about KTR IDs, since there are only two free IDs left. Dag-Erling Smorgrav (des) offered some, but found that his cats had eaten them. Jeff wondered about having reserved IDs for local use, allowing global IDs to be reclaimed. Nate Lawson (njl) suggested using dynamically allocated IDs, but the implementation was a problem. http://www.freebsd.org/cgi/mid.cgi?200412260013.iBQ0DcJ1074546 Spurious lock order reversal reports? ------------------------------------- Darren Reed (darrenr) tweaked the IPFilter[1] firewall, prompting Scott Long (scottl) to ask whether the lock order reversal in IPFilter had been fixed. Lock order reversals result when two locks are released in the opposite order that they were acquired, leading to possible deadlock. Darren wondered whether the problem could be in the reporting code; several people disagreed with this. Alan and John Baldwin (jhb) later explained that the sx[2] locks in FreeBSD are unlike Solaris's rwlocks, which Darren was used to. [1] http://www.freebsd.org/cgi/man.cgi?query=ipf&apropos=0&sektion=5&manpath=FreeBSD+6.0-current&format=html [2] http://www.freebsd.org/cgi/man.cgi?query=sx&apropos=0&sektion=9&manpath=FreeBSD+6.0-current&format=html http://www.freebsd.org/cgi/mid.cgi?200412260909.iBQ99TV1011796 =================== Important Bug Fixes =================== libarchive MFC'ed to 5.x ------------------------ Tim Kientzle (kientzle) has MFC'ed libarchive, a library for dealing with various kinds of archives, to 5-STABLE. This fixes numerous bugs, including improving error handling, correcting possible device number corruption, and improving handling of empty files. http://www.freebsd.org/cgi/mid.cgi?200412220001.iBM01trs089465 =============== Other Bug Fixes =============== Pyun YongHyeon (yongari) fixed a memory leak in the libdisk[1] disk interface library. [1] http://www.freebsd.org/cgi/man.cgi?query=libdisk&apropos=0&sektion=3&manpath=FreeBSD+6.0-current&format=html http://www.freebsd.org/cgi/mid.cgi?200412220817.iBM8HIVe021963 Ruslan Ermilov (ru) fixed a problem in catman[1], which preformats manual pages for faster access. The bug was preventing it from working on machine-specific pages. [1] http://www.freebsd.org/cgi/man.cgi?query=catman&apropos=0&sektion=1&manpath=FreeBSD+6.0-current&format=html Submitted by: Scot W. Hetzel PR: 72243 (http://www.freebsd.org/cgi/query-pr.cgi?pr=72243) http://www.freebsd.org/cgi/mid.cgi?200412221604.iBMG4wEE052662 Pawel Jakub Dawidek (pjd) patched a memory buffer leak in the bpf[1] packet sniffing/injection device. [1] http://www.freebsd.org/cgi/man.cgi?query=bpf&apropos=0&sektion=4&manpath=FreeBSD+6.0-current&format=html Submitted by: Johnny Eriksson http://www.freebsd.org/cgi/mid.cgi?200412271553.iBRFrj4i035263Received on Thu Dec 30 2004 - 04:43:51 UTC
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