Hi,
I was wondering if any of you guys know of way to make applications that use sound device on linux to access it in a "non-exclusive manner", the aim is to be able to use more than one application that requires the sound device.
Thanks (0 Replies)
Hi,
we have running 8 box sles 9 cluster and on an nfs filesystem we have the problem which is grepped from /var/log/messages.
Jun 8 13:40:46 qnclpx02 kernel: attempt to access beyond end of device
Jun 8 13:40:46 qnclpx02 kernel: sdat: rw=0, want=8894615912, limit=314572800
Is there... (1 Reply)
Hello everyone,
I write a program (Linux & Solaris) that will run as non-root user, but the program must have rw access to a device /dev/ipmi (on linux) or /dev/bmc (on solaris).
What is the standard way of granting such access?
Linux:
chmod on /dev/ipmi ?
suid root my program?
Solaris:... (1 Reply)
Problem statement.
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)
hi, i am on a quest to access and even mount if possible a drive on os x. there is no driver for the device, but it lists fine in the system profiler. can i access its location from the terminal? how? here is what i get on the system profiler:
Speed: Up to 480 Mb/sec
Manufacturer: SAMSUNG
... (3 Replies)
I am trying to load into the kernel a system-call dynamically (without restarting the kernel and compailing it) in an attempt to (once in kernel mode) write to user process's memory.
(I know there is a way to do this with the ptrace interface but it is not an option.)
I know the only way to... (1 Reply)
Equipment: DJI Phantom 3
I have the root and passwords access, but I cannot find out how to access the equipment.
There is a USB port going to a miniUSB that connects to the equipment, but on Windows is detecting the connection as being a Serial Port (COM3).
I need some help in order to gain... (5 Replies)
I cannot access or boot from my C drive. I'm running Zorin 9 and the drive is a Samsung SSD. The disk was encrypted on install, and that has not given me any problems before.
When I start the system it gets to the memory test page, and does not then load the password prompt, which it used to.... (1 Reply)
How to provide a client exclusive access to the NTP device or NTP server.
Example:
1. Configured md5 authentication for a subnet added below restriction line to the subnet as below in ntp.conf file. Also configured the keys and md5 authentication working .
restrict 192.168.1.0 mask... (1 Reply)
Hi,
Unable to make tape backup, please help.
/opt/ignite/bin/make_tape_recovery -a /dev/rmt/?mn -I -v -m tar -x inc_entire=vg00
* Creating local directories for configuration files and archive.
======= 04/25/16 16:28:08 IST Started /opt/ignite/bin/make_tape_recovery.
(Mon... (4 Replies)
Discussion started by: anuragr
4 Replies
LEARN ABOUT BSD
phys
PHYS(2) System Calls Manual PHYS(2)NAME
phys - allow a process to access physical addresses (2BSD)
SYNOPSIS
phys(segreg, size, physaddr)
unsigned int segreg, size, physaddr;
DESCRIPTION
The argument segreg specifies a process virtual (data-space) address range of 8K bytes starting at virtual address segregx8K bytes. This
address range is mapped into physical address physaddrx64 bytes. Only the first sizex64 bytes of this mapping is addressable. If size is
zero, any previous mapping of this virtual address range is nullified. For example, the call
phys(7, 1, 0177775);
will map virtual addresses 0160000-0160077 into physical addresses 017777500-017777577. In particular, virtual address 0160060 is the
PDP-11 console located at physical address 017777560.
This call may only be executed by the super-user.
ERRORS
[EPERM] The process's effective user ID is not the super-user.
[EINVAL] Segreg is less than 0 or greater than 7.
[EINVAL] Size is less than 0 or greater than 128.
SEE ALSO
PDP-11 segmentation hardware
BUGS
On systems with ENABLE/34(tm) memory mapping boards, phys cannot be used to map in the I/O page.
This system call is very dangerous. It is not considered a permanent part of the system.
Phys is unique to the PDP-11 and 2BSD; its use is discouraged.
3rd Berkeley Distribution January 22, 1987 PHYS(2)