I have found many source files in the kernel using goto keyword instead of just doing the actual thing. For example:
Is there any specific reason for writing the code like this? The first thought that came to my mind is minimizing code duplication. If we are going to change the
then with the use of goto we have to change only one instance of it. I'm asking this because if we consider the above situation, if we replace
with
(to avoid the overhead of calling goto) then will that be a patch?
I am looking for a guide on how to program for either the Linux or FreeBSD (includes 4.4BSD, NetBSD or OpenBSD) kernel. I would prefer to learn how to write device drivers, but anything would help.
If you know, please email me at *removed* or leave a post here
Regards,
Farhan (0 Replies)
Hi All,
Not sure if this is the right place to ask, so please tell me where is appropriate...
Anyway, here is the problem. I'm a bit new to kernel programming, so nothing works :confused: . I need to intercept cetrtain ethernet packets from Host1("eth0") to Host2("eth1") and send them to... (1 Reply)
:)
Hi,
I intend to learn kernel programming.
Please, let me know if have know any good books for learning or any sites which will be help me.
Thanks in advance.
-
masg (1 Reply)
I write kernel module with kernel threads using
linux/kthread.h on 2.6.* kernel
I tried to passing data between two kernel threads
with data argument of kthread_run( fun, data , NAME );
but this is not work I dont know why. I tried many possibility
and nothing works.
So I thought that... (0 Replies)
Hi
I'd like to know a logic or a strategy to count the number of I/O requests that are being made. I have the PID of the process for which this needed to be done. Does anyone have any clue as to how to do this? This is to be done in Kernel programming in C.
P.S:
This is to be done in... (2 Replies)
Hi Friends,
This is my first ever post on this forum. I am a new user in the Linux field. Although, I have been working for sometime with CentOS at my work, I would consider myself an amateur only in this field. :D
The way file system works in linux and the reason its open-source, has really... (7 Replies)
Hi there,
I have a problem with Unix kernel programming.
I have to write a program who should output the whole information the EXT4 extents contain. I have found many tutorial and information about how the EXT4 filesystem is working. Also There ar many information about the EXT4 structure but I... (1 Reply)
Hi there
At first.
My Name is Andre, 27 and im from germany
Im tryin to learn something about the Unix Kernel and System
At first im trying to manipulate the systemcalls
I want to have an Entry in the kernel logfile, whenever a new file is created.
I found out, that a file uses the... (0 Replies)
Hi
I want to implement something like this:
if( keyword1 exists)
then
check if(keyword2 exists in the same line)
then replace keyword 2 with New_Keyword
else
Add New_Keyword at the end of line
end if
eg:
Check for Keyword JUNGLE and add/replace... (7 Replies)
Discussion started by: dashing201
7 Replies
LEARN ABOUT DEBIAN
explain_select_or_die
explain_select_or_die(3) Library Functions Manual explain_select_or_die(3)NAME
explain_select_or_die - blah blah and report errors
SYNOPSIS
#include <libexplain/select.h>
void explain_select_or_die(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
DESCRIPTION
The explain_select_or_die function is used to call the select(2) system call. On failure an explanation will be printed to stderr,
obtained from explain_select(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
explain_select_or_die(nfds, readfds, writefds, exceptfds, timeout);
nfds The nfds, exactly as to be passed to the select(2) system call.
readfds The readfds, exactly as to be passed to the select(2) system call.
writefds
The writefds, exactly as to be passed to the select(2) system call.
exceptfds
The exceptfds, exactly as to be passed to the select(2) system call.
timeout The timeout, exactly as to be passed to the select(2) system call.
Returns:
This function only returns on success. On failure, prints an explanation and exits.
SEE ALSO select(2)
blah blah
explain_select(3)
explain select(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2008 Peter Miller
explain_select_or_die(3)