Date: Mon, 31 Jan 2005 22:33:54 +0100 From: gerarra@tin.it To: freebsd-hackers@freebsd.org Subject: RE: syscall list Message-ID: <41536AD5000F3F8A@ims3a.cp.tin.it> In-Reply-To: <51849.81.84.175.77.1107201632.squirrel@81.84.175.77>
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>Hi, > >I don't remember how to extract the syscall list from the kernel. There >was an article some time ago about this, and checking the syscall addres= s >to make sure it was not changed in the kernel. Could anyone point me to >this article? I've tried to google around but didn't find it. > >Best Regards In order to mantain ABI compatibility, for every kernel process (sys/proc= .h:struct proc *) is provided a struct sysentvec pointer that contains information about syscall table to be handled. Normally (when FreeBSD interface is to= be used) it points to sysent array of struct sysent entries. These struct= ures rappresent associations between number of params for every syscall and sy= scall address (the discussion could be deeper but i guess you need just that), so you can do a little check at them to get what you want. bye, rookie reference: sys/sysent.h
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