![]() % /trusted/local/lib/glibc-testing/lib/ld-linux.so.2 -library-path /usr/local/lib/glibc-testing/lib:/lib:/usr/lib /usr/bin/find /usr With the "-library-path" option as follows: If you program requires shared libraries, the path to the libraries can be specified ![]() % /trusted/local/lib/glibc-testing/lib/ld-linux.so.2 /usr/bin/find /usr For example, The Apache HTTP Server and PostgreSQL have been executed in the kernel-mode.)įor example, /usr/bin/find can be executed in the kernel-mode with the following command: (We have successfully executed many programs in the kernel-mode with this approach. The overhead of system calls can be eliminated without modifying them. Using the glibc's dynamic loader installed in the "/trusted" directory,Įxisting binaries can be executed in the kernel-mode and % ln -s ld-(version of glibc).so ld-linux.so.2 % cp /usr/local/lib/glibc-testing/lib/ld-(version of glibc).so. % cd /trusted/local/lib/glibc-testing/lib % mkdir -p /trusted/local/lib/glibc-testing/lib Install the dynamic loader into the "/trusted" directory We DO NOT recommend to overwrite system's glibcīecause replacing system's libc is as danger as replacing system's kernel.ģ.2. If you specify the "/usr" directory at the configuration (e.g., -prefix=/usr), ![]() glibc-(version of glibc)/configure -prefix=/usr/local/lib/glibc-testing -with-tls -enable-add-ons=nptl (At the writing of this article, the most recent version of the GNU C Library is 2.11.) % tar xzf glibc-(version of glibc).tar.gz Get the source from the GNU C Library site Version 3.3 (under development at the writing of this article) or laterĢ. Linux kernel with "sysenter/sysexit" support:.Therefore we explains how to build and use glibc in this article. ![]() At the writing of this article, however, only developing version of glibc enables this. With a recent glibc, the overhead of system calls in existing binaries can be eliminated without modifying them. How to build and use glibc for Kernel Mode Linux How to build and use glibc for Kernel Mode Linux
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