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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:55:43 -0400 |
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| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:55:43 -0400 |
| commit | ac5e55f5f2af5b92794c2aded46c6bae85b5f5ed (patch) | |
| tree | 9367490586c84cba28652e443e3166d66c33b0d9 /static/freebsd/man9/DEV_MODULE.9 4.html | |
| parent | 253e67c8b3a72b3a4757fdbc5845297628db0a4a (diff) | |
docs: Added All FreeBSD Manuals
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| -rw-r--r-- | static/freebsd/man9/DEV_MODULE.9 4.html | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/static/freebsd/man9/DEV_MODULE.9 4.html b/static/freebsd/man9/DEV_MODULE.9 4.html new file mode 100644 index 00000000..5acd33df --- /dev/null +++ b/static/freebsd/man9/DEV_MODULE.9 4.html @@ -0,0 +1,99 @@ +<table class="head"> + <tr> + <td class="head-ltitle">DEV_MODULE(9)</td> + <td class="head-vol">Kernel Developer's Manual</td> + <td class="head-rtitle">DEV_MODULE(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">DEV_MODULE</code> — + <span class="Nd">device driver module declaration macro</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/param.h</a>></code> + <br/> + <code class="In">#include <<a class="In">sys/kernel.h</a>></code> + <br/> + <code class="In">#include <<a class="In">sys/module.h</a>></code> + <br/> + <code class="In">#include <<a class="In">sys/conf.h</a>></code></p> +<p class="Pp"><code class="Fn">DEV_MODULE</code>(<var class="Fa" style="white-space: nowrap;">name</var>, + <var class="Fa" style="white-space: nowrap;">modeventhand_t evh</var>, + <var class="Fa" style="white-space: nowrap;">void *arg</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="#DEV_MODULE"><code class="Fn" id="DEV_MODULE">DEV_MODULE</code></a>() + macro declares a device driver kernel module. It fills in a + <var class="Vt">moduledata_t</var> structure and then calls + <a class="permalink" href="#DECLARE_MODULE"><code class="Fn" id="DECLARE_MODULE">DECLARE_MODULE</code></a>() + with the correct args, where <var class="Fa">name</var> is the name of the + module and <var class="Fa">evh</var> (with its argument + <var class="Fa">arg</var>) is the event handler for the module (refer to + <a class="Xr">DECLARE_MODULE(9)</a> for more information). The event handler + is supposed to create the device with + <a class="permalink" href="#make_dev"><code class="Fn" id="make_dev">make_dev</code></a>() + on load and to destroy it when it is unloaded using + <a class="permalink" href="#destroy_dev"><code class="Fn" id="destroy_dev">destroy_dev</code></a>().</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1> +<div class="Bd Li"> +<pre>#include <sys/module.h> +#include <sys/conf.h> + +static struct cdevsw foo_devsw = { ... }; + +static struct cdev *sdev; + +static int +foo_load(module_t mod, int cmd, void *arg) +{ + int err = 0; + + switch (cmd) { + case MOD_LOAD: + sdev = make_dev(&foo_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "foo"); + break; /* Success*/ + + case MOD_UNLOAD: + case MOD_SHUTDOWN: + destroy_dev(sdev); + break; /* Success*/ + + default: + err = EINVAL; + break; + } + + return(err); +} + +DEV_MODULE(foo, foo_load, NULL);</pre> +</div> +</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">DECLARE_MODULE(9)</a>, + <a class="Xr">destroy_dev(9)</a>, <a class="Xr">make_dev(9)</a>, + <a class="Xr">module(9)</a></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> +<p class="Pp">This manual page was written by <span class="An">Alexander + Langer</span> + <<a class="Mt" href="mailto:alex@FreeBSD.org">alex@FreeBSD.org</a>>.</p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">January 19, 2012</td> + <td class="foot-os">FreeBSD 15.0</td> + </tr> +</table> |
