02-22-2013
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8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
how can I lock my keyboard while I'm away from the computer without using lock command. What other commands gives me the option to lock keyboard device?
thanks (7 Replies)
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Hi,
I created a Solaris package, but at the end of installation (on a Solaris 10 sparc) I get :
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3. Ubuntu
I have two laptops on which I've installed Ubuntu Studio 9.04. The first laptop (Acer) has a Centrino 32-bit Intel CPU in it and the second (HP) has a 64-bit dual core Intel CPU. I'm running the 32-bit version of Ubuntu Studio on the Acer and the 64-bit version on the HP. While testing the... (5 Replies)
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4. UNIX for Advanced & Expert Users
Hi Everybody..
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Hi Everybody..
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6. Red Hat
Hello all,
If anyone has time, I have a few questions:
How do I do the following in Linux. We are using Red Hat and Oracle Enterprise Linux, which is based on Red Hat too.
1. How to lock the account after a few (like 3) invalid password attempts?
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7. UNIX for Advanced & Expert Users
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8. AIX
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LEARN ABOUT OSF1
lock_write
lock_write(9r) lock_write(9r)
NAME
lock_write - Asserts a complex lock with write access
SYNOPSIS
#include <kern/lock.h>
void lock_write(
lock_t lock_structptr );
ARGUMENTS
Specifies a pointer to the complex lock structure, lock. This is the lock structure associated with the resource on which you want to
assert a complex lock with write access. The lock structure is an opaque data structure; that is, its associated members are referenced and
manipulated by the operating system and not by the user of the complex lock mechanism.
DESCRIPTION
The lock_write routine asserts a lock with exclusive write access for the resource associated with the specified lock structure pointer.
This means that once a write lock is asserted, no other kernel thread can gain read or write access to the resource until it is released.
To release a complex write lock successfully asserted by lock_write, call the lock_done routine.
NOTES
You must call lock_init (once only) prior to calling lock_write to initialize the lock structure pointer for the resource. A resource,
from the kernel module's standpoint, is data that more than one kernel thread can manipulate. You can store the resource in global vari-
ables and in data structure members.
RETURN VALUES
None
FILES
SEE ALSO
Routines: lock_done(9r), lock_read(9r), lock_terminate(9r), lock_try_read(9r), lock_try_write(9r)
Data Structures: lock(9s)
lock_write(9r)