diff options
Diffstat (limited to 'static/freebsd/man4/xpt.4 4.html')
| -rw-r--r-- | static/freebsd/man4/xpt.4 4.html | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/static/freebsd/man4/xpt.4 4.html b/static/freebsd/man4/xpt.4 4.html new file mode 100644 index 00000000..289e163a --- /dev/null +++ b/static/freebsd/man4/xpt.4 4.html @@ -0,0 +1,104 @@ +<table class="head"> + <tr> + <td class="head-ltitle">XPT(4)</td> + <td class="head-vol">Device Drivers Manual</td> + <td class="head-rtitle">XPT(4)</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">xpt</code> — <span class="Nd">CAM + transport layer interface</span></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> +<p class="Pp">None.</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> +<p class="Pp">The <code class="Nm">xpt</code> driver provides a way for userland + applications to issue certain CAM CCBs to the kernel.</p> +<p class="Pp">Since the <code class="Nm">xpt</code> driver allows direct access + to the CAM subsystem, system administrators should exercise caution when + granting access to this driver. If used improperly, this driver can allow + userland applications to crash a machine or cause data loss.</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="KERNEL_CONFIGURATION"><a class="permalink" href="#KERNEL_CONFIGURATION">KERNEL + CONFIGURATION</a></h1> +<p class="Pp">There is no kernel configuration required for the + <code class="Nm">xpt</code> driver. It is enabled when SCSI support is + enabled in the kernel. There is one instance of the xpt driver per CAM + transport layer instance. Since there is currently only one CAM transport + layer, there will only be one instance of this driver.</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="IOCTLS"><a class="permalink" href="#IOCTLS">IOCTLS</a></h1> +<dl class="Bl-tag"> + <dt>CAMIOCOMMAND</dt> + <dd>This ioctl takes certain kinds of CAM CCBs and passes them through to the + CAM transport layer for action. Only the following CCB types are + supported: + <p class="Pp"></p> + <dl class="Bl-tag Bl-compact"> + <dt>XPT_SCAN_BUS</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_RESET_BUS</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_SCAN_LUN</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_ENG_INQ</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_ENG_EXEC</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_DEBUG</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_DEV_MATCH</dt> + <dd style="width: auto;"> </dd> + <dt>XPT_PATH_INQ</dt> + <dd style="width: auto;"> </dd> + </dl> + <p class="Pp">The above CCBs are the only ones supported since it makes more + sense to send them through a generic passthrough device rather than a + passthrough device tied to a particular underlying SCSI device.</p> + </dd> + <dt>CAMGETPASSTHRU</dt> + <dd>This ioctl takes an XPT_GDEVLIST CCB, and returns the passthrough device + corresponding to the device in question.</dd> +</dl> +</section> +<section class="Sh"> +<h1 class="Sh" id="FILES"><a class="permalink" href="#FILES">FILES</a></h1> +<dl class="Bl-tag Bl-compact"> + <dt><span class="Pa">/dev/xpt0</span></dt> + <dd>Character device node for the <code class="Nm">xpt</code> driver.</dd> +</dl> +</section> +<section class="Sh"> +<h1 class="Sh" id="DIAGNOSTICS"><a class="permalink" href="#DIAGNOSTICS">DIAGNOSTICS</a></h1> +<p class="Pp">None.</p> +</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">cam(3)</a>, <a class="Xr">cam_cdbparse(3)</a>, + <a class="Xr">pass(4)</a>, <a class="Xr">camcontrol(8)</a></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1> +<p class="Pp">The CAM transport layer driver first appeared in + <span class="Ux">FreeBSD 3.0</span>.</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> +<p class="Pp"><span class="An">Kenneth Merry</span> + <<a class="Mt" href="mailto:ken@FreeBSD.org">ken@FreeBSD.org</a>></p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">October 10, 1998</td> + <td class="foot-os">FreeBSD 15.0</td> + </tr> +</table> |