1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ |
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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5 | %general-entities; |
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6 | ]> |
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7 | |
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8 | <sect1 id="ch-chroot-kernfs"> |
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9 | <?dbhtml filename="kernfs.html"?> |
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10 | |
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11 | <title>Mounting Virtual Kernel File Systems</title> |
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12 | |
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13 | <para>From this point on, we will be running all commands as the |
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14 | <systemitem class="username">root</systemitem> user. So begin by |
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15 | exiting from the <command>su</command> as <systemitem |
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16 | class="username">lfs</systemitem>.</para> |
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17 | |
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18 | <screen role="nodump"><userinput>exit</userinput></screen> |
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19 | |
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20 | <para>Various file systems exported by the kernel are used to communicate |
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21 | to and from the kernel itself. These file systems are virtual in that no |
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22 | disk space is used for them. The content of the file systems resides in |
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23 | memory.</para> |
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24 | |
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25 | <para>Begin by creating directories onto which the file systems will |
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26 | be mounted:</para> |
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27 | |
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28 | <screen><userinput>mkdir -pv $LFS/{proc,sys}</userinput></screen> |
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29 | |
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30 | <para>Now mount the file systems:</para> |
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31 | |
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32 | <screen><userinput>mount -vt proc proc $LFS/proc |
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33 | mount -vt sysfs sysfs $LFS/sys</userinput></screen> |
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34 | |
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35 | <para>Remember that if for any reason you stop working on the LFS system |
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36 | and start again later, it is important to check that these file systems |
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37 | are mounted again before entering the chroot environment.</para> |
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38 | |
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39 | <para>Additional file systems will soon be mounted from within the |
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40 | chroot environment. To keep the host up to date, perform a <quote>fake |
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41 | mount</quote> for each of these now:</para> |
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42 | |
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43 | <screen><userinput>mount -f -vt tmpfs tmpfs $LFS/dev |
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44 | mount -f -vt tmpfs tmpfs $LFS/dev/shm |
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45 | mount -f -vt devpts -o gid=10,mode=620 devpts $LFS/dev/pts</userinput></screen> |
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46 | |
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47 | </sect1> |
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