On 2016年05月17日 19:41, Mulyadi Santosa wrote: > > > On Mon, May 16, 2016 at 7:36 AM, walkerlala <ablacktshirt@xxxxxxxxx > <mailto:ablacktshirt@xxxxxxxxx>> wrote: > > On 2016年05月16日 01:36, Mulyadi Santosa wrote: > > > > On Thu, May 12, 2016 at 9:55 PM, walkerlala > <ablacktshirt@xxxxxxxxx <mailto:ablacktshirt@xxxxxxxxx> > <mailto:ablacktshirt@xxxxxxxxx <mailto:ablacktshirt@xxxxxxxxx>>> > wrote: > > I successfully insert some function into the kernel code > and make it > execute when the kernel start up, but I just can't make the > kernel stop > executing. Are there any functions which can pause the > kernel so that I > prompt the user, and let the user input a command(maybe a > comment to > display the current time. Something like a shell would do) and > interact ? > (I had checked the "sys_***" functions in this page: > http://docs.cs.up.ac.za/programming/asm/derick_tut/syscalls.html > but just can't find a proper one ) > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > <mailto:Kernelnewbies@xxxxxxxxxxxxxxxxx> > <mailto:Kernelnewbies@xxxxxxxxxxxxxxxxx > <mailto:Kernelnewbies@xxxxxxxxxxxxxxxxx>> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > Hi... > > sounds like what kgdb does. But not sure if it is still > maintained or not. > > btw, kernel can not be paused, actually. if you really need > that, you > need to run linux kernel inside virtual machine and pause the > virtual > machine. But doing that, you will also pause user space too :) > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com <http://the-hydra.blogspot.com> > <http://the-hydra.blogspot.com> > training: mulyaditraining.blogspot.com > <http://mulyaditraining.blogspot.com> > <http://mulyaditraining.blogspot.com> > > > Hi, thanks for reply. > > I know using a debugger or virtual machine would help a little bit, > but that's not interactive any more. What I want is just a > shell-like "interactive" kernel (may be I am a little naive to think > that ?) > > Why the kernel cannot be stopped ? I think, now that if the kernel > can be interrupted, then why can't it be stopped by some mechanisms ? > > Regards, > > > > Hi... > > please add kernelnewbies to cc: list too next time :) > > Kernel can't be stopped, because it's actually servicing event mostly > generated by hardware (interrupts etc) or user space (syscall etc). So > unless you stop these two aspects to raise events, basically kernel will > still do its works. > > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com <http://the-hydra.blogspot.com> > training: mulyaditraining.blogspot.com <http://mulyaditraining.blogspot.com> Can I just disable interrupts from hardwares? I know that, at the very beginning, the kernel disable interrupt for convenient. So I wonder whether we can do thing like this. Put it in another way: when we "interact" with a Linux Desktop, there are also many programs running underneath as daemons, but we can still do our own works without even noting their existing. So I wonder, is there a similar way that we can use to interact with the kernel (without using a debugger) ? If there is, can you any one show me some examples ? Thanks in advance Regards, _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
