The problem is, that you simply count all lease occurrences in
dhcpd.leases, but only the last ones for each ip address are
valid. The lease file is more like a logfile of what has been
done, than a real database. To fix the counting issue, I'm using
a single hash (from uthash.h [1]) for the counting. This way
only the last lease entry for each IP gets into my counting
structure.
When you remove the duplicates in prepare_data(), you don't have
the information anymore, if the active lease entry or the free
lease entry came last. Simply deleting each ip from the touches
array, that is already in the leases array, gives you a big
chance to count wrong. Another way of fixing this would be to
not only store the ips in your arrays, but a structure containing
the ip and a global lease entry counter. Then you could delete
all entries except for the latest.
[1] http://uthash.sourceforge.net/
Reported-by: Huangy
Signed-off-by: Enno Gröper <groepeen@cms.hu-berlin.de>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Version 2.16 needs the patche to compile correctly and without
warnings (tested on NetBSD, Mac OS X and Debian/Ubuntu).
Signed-off-by: Adam Ciarcinski <adam@netbsd.org>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The strstr is changed to xstrstr, which short cuts to points in
string where first differences are expected to found. This made
the tool tiny bit quicker.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Remove unnecessary type casting, move .gitignore file contents to
right location, reindent to use Linux coding style, fix few type
mismatches, clean up to help & version output and hint compiler
call to these functions will end program.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
There where long and unsigned long used for IPs in use which
caused occasional off by one errors. The word occasional should
be read: pretty much every one with large enough configuration
has been affected.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Usage of includes are set up the way found to be in use, with a help of
magnificent utility.
http://code.google.com/p/include-what-you-use/
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This patch is a step a head to make data all structures
completely dynamic. After this the next obvious thing to do is to
make shared networks struct a linked list instead of a list.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This is a test fix after commit
5cbe8d07fb
to see what can be done. Truth is that not much. I could fix how
ranges are allocated, but the fact there is pointers to shared
networks and network names reallocating the memory spaces is not
really going to work. The only way to truly fix this issue is to
create better data structures. As you can expect that is a major
change, and will take some time to implement.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The program_invocation_short_name portability code is copied
from util-linux project almost as is.
Reported-by: Roar Pettersen <rope1968@gmail.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The eprintf removed and replaced with err & warn. Option parsing
no longer tries to find missing optargs, which are getopts should
notice. Few complier warnings got to be removed as well. Finally
the commments will no longer exceed standard terminal width.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
