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Subject: Why the kernel remove some LSM related functions?
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From: Wei Chen <acee06.weichen@gmail.com>
In-Reply-To: <C5B8AF15-0D1A-4A72-AFF6-684405331FCD@osss.cs.tsukuba.ac.jp>
Date: Fri, 27 Nov 2009 21:03:17 +0900
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Recent kernel of linux has removed the exported symbol of register_security() for Linux Security Module; so when I want to develop my own security module on 2.6.28, I have to modify the kernel to export the symbol and recompile the kernel source. 

Besides, the kernel has completely removed the functions of mod_reg_security() and mod_unreg_security(), which makes me unable to stack the security module. The only approach is to disable the active security module like SELinux and register mine.

Here, I want to know why the kernel did so. 

Thank you!