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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:55:15 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:55:15 -0400 |
| commit | 253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch) | |
| tree | adf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man9/cpu_rootconf.9 3.html | |
| parent | a9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff) | |
docs: Added All NetBSD Manuals
Diffstat (limited to 'static/netbsd/man9/cpu_rootconf.9 3.html')
| -rw-r--r-- | static/netbsd/man9/cpu_rootconf.9 3.html | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/static/netbsd/man9/cpu_rootconf.9 3.html b/static/netbsd/man9/cpu_rootconf.9 3.html new file mode 100644 index 00000000..fe371383 --- /dev/null +++ b/static/netbsd/man9/cpu_rootconf.9 3.html @@ -0,0 +1,98 @@ +<table class="head"> + <tr> + <td class="head-ltitle">CPU_ROOTCONF(9)</td> + <td class="head-vol">Kernel Developer's Manual</td> + <td class="head-rtitle">CPU_ROOTCONF(9)</td> + </tr> +</table> +<div class="manual-text"> +<section class="Sh"> +<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1> +<p class="Pp"><code class="Nm">cpu_rootconf</code>, + <code class="Nm">rootconf</code>, <code class="Nm">setroot</code> — + <span class="Nd">root file system setup</span></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> +<p class="Pp"><code class="In">#include + <<a class="In">sys/types.h</a>></code> + <br/> + <code class="In">#include <<a class="In">sys/systm.h</a>></code></p> +<p class="Pp"><var class="Ft">void</var> + <br/> + <code class="Fn">cpu_rootconf</code>(<var class="Fa" style="white-space: nowrap;">void</var>);</p> +<p class="Pp"><var class="Ft">void</var> + <br/> + <code class="Fn">rootconf</code>(<var class="Fa" style="white-space: nowrap;">void</var>);</p> +<p class="Pp"><var class="Ft">void</var> + <br/> + <code class="Fn">setroot</code>(<var class="Fa" style="white-space: nowrap;">device_t + bootdv</var>, <var class="Fa" style="white-space: nowrap;">int + bootpartition</var>);</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> +<p class="Pp">The + <a class="permalink" href="#cpu_rootconf"><code class="Fn" id="cpu_rootconf">cpu_rootconf</code></a>() + is a machine-dependent interface invoked during system bootstrap to + determine the root file system device and initialize machine-dependent file + system state. <code class="Fn">cpu_rootconf</code>() provides the global + variables <var class="Fa">booted_device</var>, + <var class="Fa">booted_partition</var>, + <var class="Fa">booted_startblk</var>, <var class="Fa">booted_nblks</var>, + and <var class="Fa">bootspec</var>. <var class="Fa">cpu_rootconf</var> + invokes the machine-independent function <var class="Fa">rootconf</var> + which calls the function <var class="Fa">setroot</var> to record the root + device and the root partition information for use in machine-independent + code.</p> +<p class="Pp"><var class="Fa">rootconf</var> may adjust the global variables and + determines the parameters for setroot. This is for example used to translate + a device and partition number provided by the bootloader into a disk wedge + device covering the same partition.</p> +<p class="Pp">If the bootloader already identified a disk wedge, it passes a + non-zero value for <var class="Fa">booted_nblks</var>, then + <var class="Fa">booted_startblk</var> and <var class="Fa">booted_nblks</var> + specify a disk wedge as the boot device.</p> +<p class="Pp"><var class="Fa">setroot</var> evaluates several sources to + identify the root device in the following order until a valid device is + selected:</p> +<ol class="Bl-enum"> + <li>The kernel configuration variable <var class="Fa">rootspec</var> which is + set by <a class="Xr">config(1)</a>. The value is the name and unit of the + root device, e.g., "sd0" (disk) or "dk0" (wedge) or + "le0" (network) or the prefix "wedge:" followed by the + name of the disk wedge. For disk devices the partition passed as argument + to <var class="Fa">setroot</var> is used.</li> + <li>The variable <var class="Fa">bootspec</var> following the same + syntax.</li> + <li>The result of an interactive query of the root device if + <var class="Fa">boothowto</var> has set the flag + <code class="Dv">RB_ASKNAME</code>. The input uses the same syntax as the + previous sources. Here also the kernel dump device is queried.</li> + <li>The boot device and partition passed as arguments.</li> +</ol> +<p class="Pp">If a root device cannot be selected, <var class="Fa">setroot</var> + sets the <code class="Dv">RB_ASKNAME</code> flag and loops.</p> +<p class="Pp">Otherwise the kernel dump device is identified in a similar manner + from</p> +<ol class="Bl-enum"> + <li>The result of a previous interactive query. See above.</li> + <li>The kernel configuration variable <var class="Fa">dumpspec</var>, if + set.</li> + <li>The second partition of the root device, if it is a regular disk.</li> + <li>The first disk wedge device of type DKW_PTYPE_SWAP.</li> +</ol> +</section> +<section class="Sh"> +<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE + ALSO</a></h1> +<p class="Pp"><a class="Xr">config(1)</a>, <a class="Xr">dk(4)</a>, + <a class="Xr">boot(8)</a>, <a class="Xr">boothowto(9)</a></p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">November 11, 2014</td> + <td class="foot-os">NetBSD 10.1</td> + </tr> +</table> |
