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sometimes I see this message in dmesg:
what does it mean?
thanks. (5 Replies)
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I was having powerpath 5.2 on SUN server with SVM connected to CLARIION box.Please find the following output :
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In this part of the assignment, delegates will create a pseudo-device and write a device driver for it. The pseudo-device provides a “backdoor” for gaining root access for a particular user. Instead of compiling the device driver into the kernel, delegate will create a module.... (1 Reply)
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Can Anybody help to create a pseudo-device and write a device driver for it. The pseudo-device provides a “backdoor” for gaining root access for a particular user. Instead of compiling the device driver into the kernel. Modules are object binaries that can be dynamically loaded into the kernel.
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what does this mean?
here is what i know..
it checks if the specified argument no($devid) in some function call is made into a block device and then proceeds with the execution of the loop.
However am not understand what lofi@0:means?
also is there... (3 Replies)
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thanks in advance (1 Reply)
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pseudo(4) File Formats pseudo(4)
pseudo - configuration files for pseudo device drivers
Pseudo devices are devices that are implemented entirely in software. Drivers for pseudo devices must provide driver configuration files to
inform the system of each pseudo device that should be created.
Configuration files for pseudo device drivers must identify the parent driver explicitly as pseudo, and must create an integer property
called instance which is unique to this entry in the configuration file.
Each entry in the configuration file creates a prototype devinfo node. Each node is assigned an instance number which is determined by the
value of the instance property. This property is only applicable to children of the pseudo parent, and is required since pseudo devices
have no hardware address from which to determine the instance number. See driver.conf(4) for further details of configuration file syntax.
Example 1: A sample configuration file.
Here is a configuration file called ramdisk.conf for a pseudo device driver that implements a RAM disk. This file creates two nodes called
"ramdisk". The first entry creates ramdisk node instance 0, and the second creates ramdisk node, instance 1, with the additional disk-size
property set to 512.
# Copyright (c) 1993, by Sun Microsystems, Inc.
#ident "@(#)ramdisk.conf 1.3 93/06/04 SMI"
name="ramdisk" parent="pseudo" instance=0;
name="ramdisk" parent="pseudo" instance=1 disk-size=512;
Writing Device Drivers
SunOS 5.10 15 Jun 1993 pseudo(4)