Make a syscall despite of wrong fs!!
Make a syscall despite of wrong fs!!
Can I make syscall from inside a kernel module? (Shawn Chang)
Re: Can I make syscall from inside a kernel module? (Massoud Asgharifard)
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Yes, despite of fs pointing to wrong place. There are
functions somewhere in the kernel named put_fs and get_fs.
Using these functions you should place KERNEL_DS in fs.
And after syscall restore it, certainly. You can avoid it
if you don't pass user space pointers a paramters, IMHO.
Regards, Mikhail
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