[wplug] Linux Programming Book

[Weber, Larry A]

As you can tell this is my first shot at doing kernel module programming.
What is unclear is why are there so many kernel header sets?  My Red Hat 8.0
has kernel .h sets at  /usr/include/linux,  /usr/src/linux-2.4, and
/usr/src/linux-2.4.18-14.  The example program will not compile with the
first set of .h files but will compile with the other two.  Of course the
resulting .o files will not work.  The modules install (insmod), with plenty
of warnings, and uninstall (rmmod) but never execute.

Just ordered a bunch of books on the kernel,  hope they help.


> -----Original Message-----
> From:	Dave Neuer [SMTP:mr_fred_smoothie at yahoo.com]
> Sent:	Wednesday, April 16, 2003 12:53 PM
> To:	wplug at wplug.org
> Subject:	RE: [wplug] Linux Programming Book
> 
> The problem is more likely that you don't have the
> distro-specific "kernel-headers" package installed.
> 
> This is something that pisses me off about distros
> (even though since disk space may be limited, it's
> easy to see why -- and even reasonable that they do
> it): they force you to install "*-dev" packages
> separately from the main software packages, as if
> everyone who installs software on a Linux box is some
> "dumb user" who will never want to compile an app
> themselves.
> 
> In fact, the opposite is probably still true w/ Linux;
> most people running it will probably have occasion to
> compile some application by hand from source, and it's
> not that helpful then to have "libthis" and "libthat"
> installed w/ out "libthis-dev" and "libthat-dev". I
> have to admit that of all distros, Debian actually
> seems the worst as far as this goes.
> 
> Of course, kernel hackers and module authors are
> probably more rare than "people who have to
> occasionaly compile some userspace app to get the
> latest-and-greatest feature", but still. What freakin'
> Linux system shouldn't have kernel headers installed
> by default in some *default* include search path? At
> the very least, if you've installed gcc and binutils
> or other "devlopment" tools, they should install the
> kernel headers by default.
> 
> Dave
> 
> --- "Weber, Larry A" <laweber at switch.com> wrote:
> > Probably not.  Linux kernels seem to change pretty
> > fast.  Author claims the
> > application works when compiled on RH71. and RH7.1. 
> > I am using RH8.0.  I
> > don't know which kernel came with the earlier revs
> > of RH
> > 
> > > -----Original Message-----
> > > From:	Brian Sammon [SMTP:brians+ at cs.cmu.edu]
> > > Sent:	Wednesday, April 16, 2003 11:31 AM
> > > To:	wplug at wplug.org
> > > Subject:	Re: [wplug] Linux Programming Book
> > > 
> > > > I would like to hear from anyone in WPLUG who
> > has read the book
> > > "Practical
> > > > Linux Programming: Device Drivers, Embedded
> > Systems, and the Internet"
> > > > Author Ashfaq A. Khan
> > > > 
> > > > I cannot get any of the example programs to
> > compile and would like to
> > > talk
> > > > to anyone who has been successful.
> > > 
> > > One question that springs to mind-- 
> > > Are you using the same kernel revision that the
> > author based the book on?
> > > 
> > > 
> > > _______________________________________________
> > > wplug mailing list
> > > wplug at wplug.org
> > > http://www.wplug.org/mailman/listinfo/wplug
> > _______________________________________________
> > wplug mailing list
> > wplug at wplug.org
> > http://www.wplug.org/mailman/listinfo/wplug
> 
> 
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