OUTB(2) Linux Programmer's Manual OUTB(2)NAME
outb, outw, outl, outsb, outsw, outsl, inb, inw, inl, insb, insw, insl, outb_p, outw_p, outl_p, inb_p, inw_p, inl_p - port I/O
DESCRIPTION
This family of functions is used to do low-level port input and output. The out* functions do port output, the in* functions do port
input; the b-suffix functions are byte-width and the w-suffix functions word-width; the _p-suffix functions pause until the I/O completes.
They are primarily designed for internal kernel use, but can be used from user space.
You compile with -O or -O2 or similar. The functions are defined as inline macros, and will not be substituted in without optimization
enabled, causing unresolved references at link time.
You use ioperm(2) or alternatively iopl(2) to tell the kernel to allow the user space application to access the I/O ports in question.
Failure to do this will cause the application to receive a segmentation fault.
CONFORMING TO
outb() and friends are hardware-specific. The value argument is passed first and the port argument is passed second, which is the opposite
order from most DOS implementations.
SEE ALSO ioperm(2), iopl(2)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 1995-11-29 OUTB(2)
Check Out this Related Man Page
OUTB(2) Linux Programmer's Manual OUTB(2)NAME
outb, outw, outl, outsb, outsw, outsl, inb, inw, inl, insb, insw, insl, outb_p, outw_p, outl_p, inb_p, inw_p, inl_p - port I/O
DESCRIPTION
This family of functions is used to do low-level port input and output. The out* functions do port output, the in* functions do port
input; the b-suffix functions are byte-width and the w-suffix functions word-width; the _p-suffix functions pause until the I/O completes.
They are primarily designed for internal kernel use, but can be used from user space.
You compile with -O or -O2 or similar. The functions are defined as inline macros, and will not be substituted in without optimization
enabled, causing unresolved references at link time.
You use ioperm(2) or alternatively iopl(2) to tell the kernel to allow the user space application to access the I/O ports in question.
Failure to do this will cause the application to receive a segmentation fault.
CONFORMING TO
outb() and friends are hardware-specific. The value argument is passed first and the port argument is passed second, which is the opposite
order from most DOS implementations.
SEE ALSO ioperm(2), iopl(2)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 1995-11-29 OUTB(2)
Hey Guys I work in a job where I am starting to use Unix. I want to practice on my own personal machine. I know I can download Linux in a lot of different flavors but does anyone know where I can download UNIX?
Thanks in advance. (3 Replies)
I want to find the size of the total memory allocated on the heap for the following statement:
int* a = new int;How can I use the sizeof operator for this?
I used:
printf("\t===> %d\n",sizeof(*a));
Is this statement correct?
I have asked the question because when I checked the memory of... (13 Replies)
Hello to everyone. I have encountered my first security breach! Quite exciting.
I received a few polite emails from abuse networks indicating my outward-facing web & ftp (no mail) server was sending them unfriendly traffic. A quick htop showed that root had executed "pnscan" but I never recalled... (6 Replies)
I'm new to the Linux world and whilst I've been learning the ropes, I've read some conflicting opinions regarding the creation of separate partitions for /home and other directories during OS install.
Some say that having these directories in separate partitions allows you to reinstall without... (12 Replies)
Hello,
I was trying to find information about below rpcbind issue and how can I fix it so that, it wont happen again.
Below is the one of the vulnerability from my security team,
RPC
service name: portmapper
service protocal: udp
Portmapper found at: 327xx
service port: 327xx
... (2 Replies)
Hi Expert,
Request your help.
For date validation in csv file, i have written below code for linux machine
I want the date to be in format 2017-05-11(YYYY-MM-DD), if not present in this format the error should be printed.
Could you please help in finding the right pattern to match above date... (8 Replies)
Hi Experts,
In short : Need to split file when field in column 5 is blank and need to generate two file in which column 5 is blank and other in which column 5 has values along with other rows and column data
My issue is i am not able to get header for column from raw file into new file which... (4 Replies)
Hi Experts,
Need your support.
Not able to use sql query alias in shell script.
Could you please help me in finding right way to use alias with sql query in shell script.
Below is the code i am using.
#!/bin/bash
sqlplus -s abc/abc@abc << EOF> bcd.csv
set trimspool on
select zone_id... (4 Replies)
The purpose of enclosed script is to execute selected command and output success or failure in whiptail msgBox
Works as expected when command returns zero to msgBox.
I cannot figure out how to continue / automate my script when command expects reply to continue / terminate. I am doing it... (2 Replies)
Hi all,
This might sound silly but i am trying to determine if i have sufficient memory or not.
My definition of sufficient memory = no swapping + no paging to physical swap file.
I know i can use vmstat to monitor swapping and paging and using the SR column as well.
But wouldn't it be... (28 Replies)
Today I saw the topic. sum-even-numbers-1-100 At that time, it was already closed but not the point. Other thoughts came to mind.
All newcomers to Haskell are afraid that when they study it, their brains will turn inside out. I did not notice anything like that. And all because the brains of all... (4 Replies)
Hi all together,
The US President considers this topic as not serious. Here in Germany there it's taken very serious, made a lot of words, but little action.
As far as I am reading now - written here quite clearly ... N.Y. Times - loosing earth or as video with the current state of... (37 Replies)