From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from cantor2.suse.de ([195.135.220.15] helo=mx2.suse.de) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XhbEg-0007i1-El for kexec@lists.infradead.org; Fri, 24 Oct 2014 09:32:43 +0000 Date: Fri, 24 Oct 2014 11:32:19 +0200 From: Petr Tesarik Subject: Kernel dump file access library (repost) Message-ID: <20141024113219.2bb5eeef@hananiah.suse.cz> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: kexec@lists.infradead.org, "Discussion list for crash utility usage, maintenance and development" [Seems, I used the wrong address; sorry for possible double posting.] Hi all, during this year's SUSE HackWeek, my colleague started work on enabling kernel core files in gdb. I realized that there would be at least four different programs implementing read access to kernel dump files: 1. the crash utility 2. makedumpfile (when re-filtering) 3. kdumpid (my project to get kernel version from a dump file) 4. gdb-kdump (started by my colleague during HackWeek) At this point, I felt that's too much re-inventing the wheel again and again, so I took my current code from kdumpid and adapted it as a library that can be used by everybody: https://github.com/ptesarik/libkdumpfile In its current shape, it's usable, but far from complete. Things that work already: - identify kdump file format - parsed meta-information from the header - open ELF, diskdump, makedumpfile, LKCD - read data by physical address (incl. Xen Dom0) - read data by Xen machine address Things still on my TODO list: - more formats: sadump, kvmdump, libvirt, xc_core, xc_save - determine phys_base in ELF files - determine kernel release if not found in headers Ideally, I would like to replace all current implementations with this library, so if a new file format appears, or a new feature is added to one of the files, it can be immediately used by all kdump-related tools. Please let me know what you think. Oh, and if you're developing such a tool, let me know which features should be added. Regards, Petr Tesarik _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec