Re: kernel hack
Sorry, this went to -current by accident, but should have gone here... - Forwarded message from Stefan Sperling <[EMAIL PROTECTED]> - Date: Sun, 25 Sep 2005 18:35:53 +0200 From: Stefan Sperling <[EMAIL PROTECTED]> To: kamal kc <[EMAIL PROTECTED]> Cc: freebsd-current@freebsd.org Subject: Re: kernel hack On Sun, Sep 25, 2005 at 03:31:51AM -0700, kamal kc wrote: > does anybody know what is the best way > to start kernel hack. IMHO, the best way to start kernel hacking is to invest an awful lot of time into reading books. I presume you know C _really_ well already :) And by really well I also mean you know what is wrong about C! Any modern book on writing device drivers should be a good starting point. It does not really matter which UNIX-derivative the book is about. Hint: There are a lot of these books about Linux. Read programmer's datasheets, preferably for devices you own, and learn how to talk to registers from C. ftp.alsa-project.org has datasheets for sound cards, for example. Make sure you also learn about multi-threading (mutexes, semaphores etc). A lot of kernels are multi-threaded these days. A very good overview of the FreeBSD kernel is given in "The Design and Implementation of the FreeBSD Operating System", by Mr. McKusick and Mr. Neville-Neil. Read all of it. Having learned about drivers and multi-threading beforehand helps a lot. > Any references to any web page would > be appreciated Get books, it's worth it! You really don't want to read this much material on your monitor! (Unless you have a 28" TFT of course ;). Plus books are often much better written, easier to understand, and a lot more detailed than tutorials on the web. http://www.NetBSD.org/Documentation also has an interesting kernel section to get you started before your books arrive :) -- stefan http://stsp.in-berlin.de PGP Key: 0xF59D25F0 - End forwarded message - -- stefan http://stsp.in-berlin.de PGP Key: 0xF59D25F0 ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: kernel hack
On Sun, Sep 25, 2005 at 03:31:51AM -0700, kamal kc wrote: > does anybody know what is the best way > to start kernel hack. It isn't quite clear what you mean, but presuming you mean "make a change to the FreeBSD kernel that you use" then: 1) First learn how to recompile your kernel. You can get details from the FreeBSD handbook (http://www.freebsd.org/handbook/). 2) Look under /usr/src/sys for the kernel source code. The main bit is in /usr/src/sys/kern, networking lives under /usr/src/sys/net* and so on. 3) Change the code you want and then recompie the kernel. Remember to keep an old kernel around incase you make a mistake. David. ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
kernel hack
does anybody know what is the best way to start kernel hack. Any references to any web page would be appreciated __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: kernel-hack ??
Although it should be noted that the feature is far more effective in 5.0-CURRENT, as the inter-process authorization is more consistent and more effectively mediated. For example, the sysctl doesn't properly impact procfs (and some other calls) in -STABLE. Robert N M Watson FreeBSD Core Team, TrustedBSD Project [EMAIL PROTECTED] NAI Labs, Safeport Network Services On Thu, 16 Aug 2001, Samuel Greear wrote: > Twiddle the sysctl: > kern.ps_showallprocs > > Sam > > > > > > Hi, i just want to know is there a patch on freebsd that can limit the > > > > ps aux -- and only show the current user's process and not the whole > system > > process. > > > > like, what the openwall linux patch did.. http://www.openwall.com/linux/ > > > > thank you.. > > > > > > > > > > > > > > louie miranda (axishift.ath.cx) > > -- > > chmod 0 / ; and smile *=)* > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel-hack ??
Twiddle the sysctl: kern.ps_showallprocs Sam > Hi, i just want to know is there a patch on freebsd that can limit the > > ps aux -- and only show the current user's process and not the whole system > process. > > like, what the openwall linux patch did.. http://www.openwall.com/linux/ > > thank you.. > > > > > > > louie miranda (axishift.ath.cx) > -- > chmod 0 / ; and smile *=)* To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
kernel-hack ??
Hi, i just want to know is there a patch on freebsd that can limit the ps aux -- and only show the current user's process and not the whole system process. like, what the openwall linux patch did.. http://www.openwall.com/linux/ thank you.. louie miranda (axishift.ath.cx) -- chmod 0 / ; and smile *=)* To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
