how to access system/library calls in kernel space.

i know library and systemcalls cannot be accessed in kernel space , i have seen using
memset in kernel code , memset is a library call and how it is working ?

i need to access open system call in kernel space is it possible to open a disk file in kernel space for reading.
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mrjoltcolaConnect With a Mentor Commented:
memset is usually / or possibly always a compiler inlined function, a few simple ASM instructions, so there will not be an externally linked function.

Unless my memory is really bad, I've used memset in actual Linux kernel driver code.
tittuAuthor Commented:
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