FreeBSD cvs-src summary for 31/05/04 to 07/06/04 ++++++++++++++++++++++++++++++++++++++++++++++++ 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. This newsletter is marked up in reStructuredText_, so any odd punctuation that you see is likely intended for the reST parser. .. _reStructuredText: http://docutils.sourceforge.net/rst.html 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). For Lukasz Dudek and Szymon Roczniak's Polish translations of these summaries, which may lag the English ones slightly, please see http://mocart.pinco.pl/FreeBSD/. .. contents:: ============ New features ============ New per-device sysctls being used --------------------------------- Dag-Erling Smorgrav (des) made several commits updating drivers to use the `new device-specific sysctl tree`_, named "dev". He first did the fxp driver for Intel Ethernet cards, then the ndis driver, for emulation of Windows's NDIS layer. .. _`new device-specific sysctl tree`: http://excel.xl0.org/FreeBSD/31-05-04.html#sysctl-subtrees-created-for-each-device http://www.freebsd.org/cgi/mid.cgi?200406041023.i54AN1V6015457 Major enhancements to sunlabel ------------------------------ Joerg Wunsch (joerg) committed several significant enhancements to sunlabel, which edits partitions on Sun disks. He added the -c option, to calculate sizes in cylinders and the -h option, to use human-readable numbers. He also implemented VTOC (volume table of contents), which allows sunlabel to achieve the full functionality of Solaris's format command, with some enhancements, like the ability to edit volume-manager-encapsulated labels. He also added a proper man page. http://www.freebsd.org/cgi/mid.cgi?200406012032.i51KWacs091996 accept locking added -------------------- Robert Watson (rwatson) added accept locking, which serializes access to a number of socket-related variables used by the accept system call. He also rewrote some of the socket code to correct locking problems and race conditions. http://www.freebsd.org/cgi/mid.cgi?200406020415.i524Fdp0016469 newsyslog gains D flag ---------------------- Garance A. Drosehn (gad) added a new flag, D, to newsyslog.conf. When the flag is specified on one of the entries, rotated log files will have the NODUMP flag set on them after they are created, to prevent their being backed up by dump. http://www.freebsd.org/cgi/mid.cgi?200406032341.i53NfnNk061252 arl driver MFC'ed ----------------- Max Khon merged the arl driver, for Aironet Arlan 655 wireless network adapters, to 4.x. He also merged the related arlcontrol utility. http://www.freebsd.org/cgi/mid.cgi?200406021906.i52J6dm6037848 =============== Notable changes =============== Outdated MIDI drivers and framework removed ------------------------------------------- Seigo Tanimura (tanimura) removed the MIDI drivers and framework, since they will soon be replaced with a new module-friendly MIDI implementation by Matthew Kanner (matk). http://www.freebsd.org/cgi/mid.cgi?200406010622.i516MxTj077527 tty code cleanup ---------------- Poul-Henning Kamp (phk) made some large cleanups to the tty code, with the goal of eliminating the ttyregister call in favor of ttymalloc, and using functions to manipulate tty objects instead of modifying the object directly. This will make it possible to add proper reference counting to the tty code. (many) arlconfig changed to arlcontrol ------------------------------- Max Khon (fjoe) renamed arlconfig, the tool for configurating the Aironet Arlan 655, to arlcontrol. http://www.freebsd.org/cgi/mid.cgi?200406010738.i517cBdv092921 ================= Discussion topics ================= Using the new device sysctl tree -------------------------------- Maxime Henrion (mux) changed the fxp driver to use the device sysctl tree, as mentioned `last week`_. This spawned a couple of related threads. First, Nate Lawson (njl) asked whether it's possible to suppress printing of the device-tree-specific nodes with % signs in them; Maxime didn't know of any way other than just using grep -v to filter them out. Scott Long (scottl) noted that the scheme Maxime had set up, using individual device names in the tree (like dev.fxp0), doesn't allow for global variables instead of per-interface ones. Maxime answered that the fxp driver's variables don't have to be global, but that the problem will probably come up in the future for drivers that use global settings. He speculated about a userland program to add the functionality; Scott pointed out that that won't work for settings needed to boot the system. .. _`last week`: http://excel.xl0.org/FreeBSD/31-05-04.html#sysctl-subtrees-created-for-each-device Dag-Erling Smorgrav (des) responded to Scott's suggestion of using dev.fxp.0.varname and dev.fxp.globalvarname to represent interface-specific vs. global values, saying it would be easy to do and that he would work on patches. M. Warner Losh (imp) asked how identical global and per-interface variables would be treated, and what API could be used to set the variables. Dag-Erling answered that it's up to the driver author to decide how global vs. per-interface variables will be treated, and also noted that he planned to use a scheme like dev.fxp.fxp0 instead of dev.fxp.0, in case there were multiple devices with the same number but different names. Warner answered that that should never happen, also asking about the API. Dag-Erling `explained the api`_ and decided to use the dev.fxp.0 scheme instead of dev.fxp.fxp0. He later `committed code`_ to implement this. .. _`explained the api`: http://www.freebsd.org/cgi/mid.cgi?xzp3c5c8i1w.fsf_at_dwp.des.no .. _`committed code`: http://www.freebsd.org/cgi/mid.cgi?200406041023.i54AN1V6015457 http://www.freebsd.org/cgi/mid.cgi?200406022252.i52MqJFp094240 bios_string function added -------------------------- Poul-Henning Kamp (phk) added a bios_string function, which searches a given range of the BIOS for the supplied string. The function is intended for looking for specific strings in the BIOS to identify a platform. Nate Lawson (njl) asked whether the need to align memory should be addressed in the function, and also asked about whether BIOS memory is all mapped into kernel memory, as Poul-Henning's code treats it to be. David Xu answered that 4 megabytes of the BIOS is mapped, and Poul-Henning said that it is all mapped, as far as he knows; he also suggested waiting on the alignment until it's shown to be needed. Nate responded that ACPI BIOS access must be 16-byte-aligned, and John Baldwin (jhb) added that the multiprocessor table, $PIR, _32_, and $PnP must also be 16-byte-aligned. John Baldwin asked whether Poul-Henning's code is very different from bios_sigsearch. Poul-Henning answered that bios_string allows you to search any range, as opposed to bios_sigsearch, which is limited. John suggested one could be implemented in terms of the other; Poul-Henning answered that he was not against merging them, but that it may not be needed, as the functions are small. David O'Brien (obrien) suggested that the function could go into a machine-independent file, since it's usable on amd64 as-is. John answered that he doesn't consider it machine-independent, but that it could go in a tree dedicated to x86 processors. David agreed. http://www.freebsd.org/cgi/mid.cgi?200406032236.i53MaOj5046199 =================== Important bug fixes =================== Routing table manipulation by jailed root fixed ----------------------------------------------- Colin Percival (cperciva) applied a patch to the jail code that prevents a jailed root user from manipulating the system's routing table. This issue was present in 4.8 and 4.9, but no 5.x releases, and is also fixed in 4.10-RELEASE. This bug is covered by `FreeBSD-SA-04:12.jailroute`_, which credits its discovery to Pawel Malachowski. .. _`FreeBSD-SA-04:12.jailroute`: ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:12.jailroute.asc http://www.freebsd.org/cgi/mid.cgi?200406071742.i57HggwA076377 Core dumps over 2 GB fixed on 64-bit platforms ---------------------------------------------- Tim J. Robbins fixed a bug in the core dumping code that prevented it from dumping core files greater than 2 GB on 64-bit platforms. The bug was reported by Willem Jan Withagen in `PR 67546`_, but Tim used a different patch. .. _`PR 67546`: http://www.freebsd.org/cgi/query-pr.cgi?pr=67546 http://www.freebsd.org/cgi/mid.cgi?200406050218.i552ISvl057589 =============== Other bug fixes =============== Maxim Konovalov (maxim) merged a fix for a buffer overrun in the IP output code to 4.x. The bug was reported by Andrei Iltchenko. http://www.freebsd.org/cgi/mid.cgi?200406010738.i517cuit092996 John Baldwin (jhb) fixed a panic on systems with multiple PCI bridges and ACPI turned off. http://www.freebsd.org/cgi/mid.cgi?200406011951.i51JpTEM081637 John Baldwin (jhb) fixed a bug in 4.x that could cause divide-by-zero faults on machines without Hyperthreading. http://www.freebsd.org/cgi/mid.cgi?200406021442.i52Egxwe072518 Bill Paul (wpaul) fixed NDIS support for the Intel 2100 Centrino wireless driver. http://www.freebsd.org/cgi/mid.cgi?200406040443.i544haeR039396 Bruce Evans (bde) fixed several bugs in the floating-point math code that caused incorrect results. Some of the bugs were hidden on i386 systems by a precision-enhancing trick. http://www.freebsd.org/cgi/mid.cgi?200406011808.i51I8dCA053190 http://www.freebsd.org/cgi/mid.cgi?200406011903.i51J3VHL066311 http://www.freebsd.org/cgi/mid.cgi?200406021709.i52H95UO010571 David Schultz (das) fixed a bug in the math code for calculating tangents that affected precision. http://www.freebsd.org/cgi/mid.cgi?200406020439.i524dTSo020632Received on Tue Jun 08 2004 - 01:56:44 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:37:56 UTC