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Date: Fri, 23 Dec 2011 17:29:10 +0530 From: Gaurav Saxena <grvsaxena419@...il.com> To: Jiri Kosina <jkosina@...e.cz> Cc: linux-kernel@...r.kernel.org Subject: Re: Intercepting system calls I found that Ubuntu does not have a kprobe enabled kernel. :( I don't think I could use kprobes then. On Fri, Dec 23, 2011 at 3:20 PM, Gaurav Saxena <grvsaxena419@...il.com> wrote: > Hello Jiri > > On Fri, Dec 23, 2011 at 3:17 PM, Jiri Kosina <jkosina@...e.cz> wrote: >> On Thu, 22 Dec 2011, Gaurav Saxena wrote: >> >>> I am writing an application for which I need to intercept some >>> filesystem system calls eg. unlink. I need unlink to call my code >>> before deleting abc so that I could probably prevent unlink . I would >>> like to implement this in a kernel module instead of modifying kernel >>> code itself. I would like to intercept system calls by replacing >>> system calls but I have not been able to find any method of doing that >>> in linux > 3.0. Please suggest some method of doing that. >> >> Write a kernel module that instruments sys_unlink() via krpobes. See >> Documentation/kprobes.txt for details. > Ok. I am looking at its details, will try that. But how could a probe > prevent execution of a system call? >> >> -- >> Jiri Kosina >> SUSE Labs >> > > > > -- > Thanks and Regards , > Gaurav -- Thanks and Regards , Gaurav -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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