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51e16cb8 |
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23-Nov-2023 |
Warner Losh <imp@FreeBSD.org> |
sbin: Remove ancient SCCS tags. Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
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b2c76c41 |
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16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
Remove $FreeBSD$: one-line nroff pattern Remove /^\.\\"\s*\$FreeBSD\$$\n/
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0a5c04a8 |
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17-Apr-2022 |
Mitchell Horne <mhorne@FreeBSD.org> |
savecore: add an option to save a live minidump The new '-L' flag will cause savecore to invoke the new mem(4) kernel dump ioctl, taking a dump of the running system and writing the result to a temporary file. Validation of the dump header is performed, similar to regular crash dumps, and the final result is written to livecore.X[.zst|.gz]. Also added is the '-Z' flag, which instructs the kernel to compress the livedump compressed with zstd, akin to the existing -z flag. This option has no effect in normal savecore(8) operation, but in theory could be extended to perform such compression while reading the dump from the dump device. Encryption is unsupported for live dumps. For example: 'savecore -Lz /var/crash' would create: /var/crash/livecore.0.gz Reviewed by: markj MFC after: 2 weeks Sponsored by: Juniper Networks, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D34347
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bc7ed46b |
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18-Nov-2020 |
Gleb Smirnoff <glebius@FreeBSD.org> |
Add '-u' switch that would uncompress cores that were compressed by kernel during dump time. A real life scenario is that cores are compressed to reduce size of dumpon partition, but we either don't care about space in the /var/crash or we have a filesystem level compression of /var/crash. And we want cores to be uncompressed in /var/crash because we'd like to instantily read them with kgdb. In this case we want kernel to write cores compressed, but savecore(1) write them uncompressed. Reviewed by: markj, gallatin Relnotes: yes Differential Revision: https://reviews.freebsd.org/D27245
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0457d75c |
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27-Mar-2018 |
Edward Tomasz Napierala <trasz@FreeBSD.org> |
Bump .Dd after r331113. Reported by: oshogbo@ MFC after: 2 weeks
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7dc5b440 |
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17-Mar-2018 |
Edward Tomasz Napierala <trasz@FreeBSD.org> |
Xr crashinfo(8) from savecore(8). MFC after: 2 weeks
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64a16434 |
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24-Oct-2017 |
Mark Johnston <markj@FreeBSD.org> |
Add support for compressed kernel dumps. When using a kernel built with the GZIO config option, dumpon -z can be used to configure gzip compression using the in-kernel copy of zlib. This is useful on systems with large amounts of RAM, which require a correspondingly large dump device. Recovery of compressed dumps is also faster since fewer bytes need to be copied from the dump device. Because we have no way of knowing the final size of a compressed dump until it is written, the kernel will always attempt to dump when compression is configured, regardless of the dump device size. If the dump is aborted because we run out of space, an error is reported on the console. savecore(8) is modified to handle compressed dumps and save them to vmcore.<index>.gz, as it does when given the -z option. A new rc.conf variable, dumpon_flags, is added. Its value is added to the boot-time dumpon(8) invocation that occurs when a dump device is configured in rc.conf. Reviewed by: cem (earlier version) Discussed with: def, rgrimes Relnotes: yes Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D11723
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fbbd9655 |
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28-Feb-2017 |
Warner Losh <imp@FreeBSD.org> |
Renumber copyright clause 4 Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
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480f31c2 |
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10-Dec-2016 |
Konrad Witaszczyk <def@FreeBSD.org> |
Add support for encrypted kernel crash dumps. Changes include modifications in kernel crash dump routines, dumpon(8) and savecore(8). A new tool called decryptcore(8) was added. A new DIOCSKERNELDUMP I/O control was added to send a kernel crash dump configuration in the diocskerneldump_arg structure to the kernel. The old DIOCSKERNELDUMP I/O control was renamed to DIOCSKERNELDUMP_FREEBSD11 for backward ABI compatibility. dumpon(8) generates an one-time random symmetric key and encrypts it using an RSA public key in capability mode. Currently only AES-256-CBC is supported but EKCD was designed to implement support for other algorithms in the future. The public key is chosen using the -k flag. The dumpon rc(8) script can do this automatically during startup using the dumppubkey rc.conf(5) variable. Once the keys are calculated dumpon sends them to the kernel via DIOCSKERNELDUMP I/O control. When the kernel receives the DIOCSKERNELDUMP I/O control it generates a random IV and sets up the key schedule for the specified algorithm. Each time the kernel tries to write a crash dump to the dump device, the IV is replaced by a SHA-256 hash of the previous value. This is intended to make a possible differential cryptanalysis harder since it is possible to write multiple crash dumps without reboot by repeating the following commands: # sysctl debug.kdb.enter=1 db> call doadump(0) db> continue # savecore A kernel dump key consists of an algorithm identifier, an IV and an encrypted symmetric key. The kernel dump key size is included in a kernel dump header. The size is an unsigned 32-bit integer and it is aligned to a block size. The header structure has 512 bytes to match the block size so it was required to make a panic string 4 bytes shorter to add a new field to the header structure. If the kernel dump key size in the header is nonzero it is assumed that the kernel dump key is placed after the first header on the dump device and the core dump is encrypted. Separate functions were implemented to write the kernel dump header and the kernel dump key as they need to be unencrypted. The dump_write function encrypts data if the kernel was compiled with the EKCD option. Encrypted kernel textdumps are not supported due to the way they are constructed which makes it impossible to use the CBC mode for encryption. It should be also noted that textdumps don't contain sensitive data by design as a user decides what information should be dumped. savecore(8) writes the kernel dump key to a key.# file if its size in the header is nonzero. # is the number of the current core dump. decryptcore(8) decrypts the core dump using a private RSA key and the kernel dump key. This is performed by a child process in capability mode. If the decryption was not successful the parent process removes a partially decrypted core dump. Description on how to encrypt crash dumps was added to the decryptcore(8), dumpon(8), rc.conf(5) and savecore(8) manual pages. EKCD was tested on amd64 using bhyve and i386, mipsel and sparc64 using QEMU. The feature still has to be tested on arm and arm64 as it wasn't possible to run FreeBSD due to the problems with QEMU emulation and lack of hardware. Designed by: def, pjd Reviewed by: cem, oshogbo, pjd Partial review: delphij, emaste, jhb, kib Approved by: pjd (mentor) Differential Revision: https://reviews.freebsd.org/D4712
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06691045 |
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01-Dec-2015 |
Craig Rodrigues <rodrigc@FreeBSD.org> |
Add more text to explain --libxo flag.
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eeff0b1b |
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16-Dec-2012 |
Pawel Jakub Dawidek <pjd@FreeBSD.org> |
Implement -m option to savecore(8) that allows to limit number of kernel dumps stored. Once the limit is reached it restarts from 0. Reviewed by: avg Obtained from: WHEEL Systems
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349d039b |
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14-Dec-2012 |
Pawel Jakub Dawidek <pjd@FreeBSD.org> |
- When checking if a dump exists on the given device there is no need to provide dump directory. Eliminate this redundant argument. This changes the usage, but the only risk here is that a warning will be printed about directory given as device. - Update usage of -C option. - When clearing dump header from the given device there is also no need to provide dump directory, although additional arguments for -c were not documented. - Document that -v can be used with -c and that list of devices can be given. Obtained from: WHEEL Systems
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a7d5f7eb |
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19-Oct-2010 |
Jamie Gritton <jamie@FreeBSD.org> |
A new jail(8) with a configuration file, to replace the work currently done by /etc/rc.d/jail.
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fe0506d7 |
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09-Mar-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Create the altix project branch. The altix project will add support for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting is a two-module system, consisting of a base compute module and a CPU expansion module. SGI's NUMAFlex architecture can be an excellent platform to test CPU affinity and NUMA-aware features in FreeBSD.
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20ba6b0d |
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17-Sep-2009 |
Ruslan Ermilov <ru@FreeBSD.org> |
Fixed markup.
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2a72feb4 |
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23-Apr-2009 |
Christian Brueffer <brueffer@FreeBSD.org> |
Correct the information about when the respective functionality first appeared in FreeBSD. PR: 133785 Submitted by: Ulrich Spoerlein <uqs@spoerlein.net> MFC after: 3 days
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138f7e4b |
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24-Dec-2008 |
Tom Rhodes <trhodes@FreeBSD.org> |
Apply various fixes: Silence mdoc(7) warnings; Xref correct manual pages; Point user to the ddb.8 manual page. PR: 129398 Submitted by: gavin
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d7f03759 |
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19-Oct-2008 |
Ulf Lilleengen <lulf@FreeBSD.org> |
- Import the HEAD csup code which is the basis for the cvsmode work.
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10187cae |
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26-Dec-2007 |
Robert Watson <rwatson@FreeBSD.org> |
Teach savecore(8) how to extract textdump(4) dumps. Update savecore(8) man page to reflect textdump additions. MFC after: 3 months
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55c82bf0 |
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14-Jun-2005 |
Ruslan Ermilov <ru@FreeBSD.org> |
Markup fixes. Approved by: re (blanket)
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ff869641 |
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06-Jun-2005 |
Philip Paeps <philip@FreeBSD.org> |
Fix a silly little typo I just spotted.
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5fb7027c |
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23-Feb-2005 |
David E. O'Brien <obrien@FreeBSD.org> |
Allow a forced dump even if the dump header information is inconsistent. Output more verbosity with additional -v's. Submitted by: seanc
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6087df9e |
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18-Jan-2005 |
Ruslan Ermilov <ru@FreeBSD.org> |
Sort sections.
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4c723140 |
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09-Apr-2004 |
Mark Murray <markm@FreeBSD.org> |
Remove advertising clause from University of California Regent's license, per letter dated July 22, 1999. Approved by: core, imp
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628d16a3 |
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04-Sep-2003 |
Doug Barton <dougb@FreeBSD.org> |
Add a flag that reports the existence of a dump, and does nothing else. The immediate purpose for this option is to use it in rc.d so that we can make savecore behavior conditional. Tremendous assistance with ideas and sanity checking provided by tjr and b@etek.chalmers.se.
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ce66ddb7 |
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21-Aug-2002 |
Tom Rhodes <trhodes@FreeBSD.org> |
s/filesystem/file system/g as discussed on -developers
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629e80ef |
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06-Jul-2002 |
Philippe Charnier <charnier@FreeBSD.org> |
The .Nm utility.
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1fa8142d |
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29-May-2002 |
Ruslan Ermilov <ru@FreeBSD.org> |
mdoc(7) police: nits.
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edc4f96e |
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04-May-2002 |
Bill Fenner <fenner@FreeBSD.org> |
- revert back to vmcore.# - reimplement -z - use syslog() - improve consistancy of messages - allow -f to recover cleared dumps - return bufsize to 1024 * 1024 - return the ability to write sparse files - update man page - fix minfree to require 2k for info file instead of the kernel size - include Berkeley copyright too due to amount of old code copied Submitted by: Chad David <davidc@acns.ab.ca>
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e2fb2db5 |
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28-Oct-2001 |
Nick Hibma <n_hibma@FreeBSD.org> |
Add a Xref to dumpon.
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#
e8ae41c3 |
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11-Sep-2001 |
Ruslan Ermilov <ru@FreeBSD.org> |
mdoc(7) police: restore the correct sorting of SEE ALSO.
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dff462c3 |
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06-Sep-2001 |
Kris Kennaway <kris@FreeBSD.org> |
* Switch from doing compress(1)ed crashdumps with the -z flag to using gzip(1). gdb doesn't understand these, but then again it didn't understand compressed crashdumps either. * Change a stray lseek() into a Lseek() * Remove the extraneous prototype for log() which has apparently never existed in FreeBSD's sources Obtained from: NetBSD (partially) MFC after: 2 weeks
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9fe48c6e |
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10-Jul-2001 |
Ruslan Ermilov <ru@FreeBSD.org> |
mdoc(7) police: removed HISTORY info from the .Os call.
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4c98f36d |
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16-Feb-2001 |
Dag-Erling Smørgrav <des@FreeBSD.org> |
Document the new -k option in usage message and man page.
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896eb7d1 |
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16-Jan-2001 |
Ruslan Ermilov <ru@FreeBSD.org> |
Prepare for mdoc(7)NG.
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7c7fb079 |
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20-Nov-2000 |
Ruslan Ermilov <ru@FreeBSD.org> |
mdoc(7) police: use the new features of the Nm macro.
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7f3dea24 |
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27-Aug-1999 |
Peter Wemm <peter@FreeBSD.org> |
$Id$ -> $FreeBSD$
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f9b52c93 |
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28-Jul-1998 |
Philippe Charnier <charnier@FreeBSD.org> |
Correct use of .Nm, add rcsid, remove unused #include.
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c0ec1f37 |
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22-Feb-1997 |
Peter Wemm <peter@FreeBSD.org> |
Revert $FreeBSD$ to $Id$
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1130b656 |
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14-Jan-1997 |
Jordan K. Hubbard <jkh@FreeBSD.org> |
Make the long-awaited change from $Id$ to $FreeBSD$ This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
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4731e263 |
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13-Oct-1996 |
Bill Fenner <fenner@FreeBSD.org> |
Make the savecore command work like the man page says: - make minfree work by getting the dump size before checking to see if the dump will fit on the filesystem - also fail to dump if no minfree is specified but there are not enough free blocks. Fix a typo in the man page. Fixes PR bin/1322 Submitted by: "Philippe C." <charnier@lirmm.fr>
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4be4929c |
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23-Sep-1994 |
Garrett Wollman <wollman@FreeBSD.org> |
Get rid of _PATH_UNIX completely; use getbootfile(3) instead. DANGER WILL ROBINSON! _PATH_UNIX is currently defined as the literal string "don't use this". I am of two minds about this myself, but wanted to get something into the tree as quickly as possible.
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b3bfc719 |
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05-Aug-1994 |
David Greenman <dg@FreeBSD.org> |
Converted 'vmunix' to 'kernel'.
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8fae3551 |
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26-May-1994 |
Rodney W. Grimes <rgrimes@FreeBSD.org> |
BSD 4.4 Lite sbin Sources Note: XNSrouted and routed NOT imported here, they shall be imported with usr.sbin.
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