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[Xen-devel] Stop the execution of syscall in trap.c
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx\"" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] Stop the execution of syscall in trap.c |
| From: | Carlo Maiero <zesster@xxxxxxxxx> |
| Date: | Wed, 13 Oct 2010 15:11:58 +0200 |
| Delivery-date: | Wed, 13 Oct 2010 06:13:00 -0700 |
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I'm working on a similar project of http://lists.xensource.com/archives/html/xen-devel/2008-11/msg00813.html,
but after the interception I also want to stop some syscall from be executed by the hypervisor. I intercept the call in the do_guest_trap in trap.c, and i control the (cpu_user_regs regs) regs->eax for the number, and if
the number is some unpermitted syscall as for example (128 for insmod or 129 for rmmod), i want to stop the execution of the syscall. How can I stop the execution here?(it's possible to stop the execution here?) or return an error code without a system crush?
I've tried something but somethings just print the error code, and don't stop the syscall execution, and other things brings to panic.
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