| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE section [
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| 3 | ]>
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| 4 | <section xmlns="http://docbook.org/docbook-ng"
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| 5 | xml:id="ch-system-kernfs">
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| 6 | <title>Mounting virtual kernel file systems</title>
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| 7 | <?dbhtml filename="kernfs.html"?>
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| 8 |
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| 9 | <para>Various file systems exported by the kernel don't exist at all on your
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| 10 | hard drive, but are used to communicate things to and from the kernel itself.</para>
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| 11 |
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| 12 | <para>Begin by creating directories onto which the file systems will be mounted:</para>
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| 13 |
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| 14 | <screen><userinput>mkdir -p $LFS/{proc,sys}</userinput></screen>
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| 15 |
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| 16 | <para>Now mount the file systems:</para>
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| 17 |
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| 18 | <screen><userinput>mount -t proc proc $LFS/proc
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| 19 | mount -t sysfs sysfs $LFS/sys</userinput></screen>
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| 20 |
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| 21 | <para>Remember that if for any reason you stop working on your LFS, and start
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| 22 | again later, it's important to check that these file systems are mounted again
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| 23 | before entering the chroot environment, otherwise problems could occur.</para>
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| 24 |
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| 25 | <para>Shortly, we'll be mounting a few more file systems from within the chroot
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| 26 | environment. To keep the host up-to-date, we'll do a <quote>fake mount</quote>
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| 27 | for each of these now:</para>
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| 28 |
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| 29 | <screen><userinput>mount -f -t ramfs ramfs $LFS/dev
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| 30 | mount -f -t tmpfs tmpfs $LFS/dev/shm
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| 31 | mount -f -t devpts -o gid=4,mode=620 devpts $LFS/dev/pts</userinput></screen>
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| 32 |
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| 33 | </section>
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