January 2010 – KutuKupret

Counting Directory Size Recursively Using C

Jan 302010

I’ve just found this great articles at Jim Plank website. I know, it was lots easier using linux du command

Without any further nonsense talk, here we go. First we need download some source code at Jim Plank website

# mkdir prsize
# cd prsize
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/notes/Prsize/prsize8.c
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/src/dllist.c
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/notes/Dllists/dllist.h
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/src/jrb.c
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/include/jrb.h
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/src/jval.c
# wget http://www.cs.utk.edu/~plank/plank/classes/cs360/360/include/jval.h

prsize8.c is the main program, while dllist.c/h jrb.c/h jval.c/h is library that prsize8 statically linked in.

Now we need to create some static library.(Original website doesn’t explain how to create the libs)

# gcc -c dllist.c -o dllist.o
# gcc -c jrb.c -o jrb.o
# gcc -c jval.c -o jval.o

# ar rcs libdllist.a dllist.o
# ar rcs libjrb.a jrb.o
# ar rcs libjval.a jval.o

Maildroprc Automatically Delete quotawarn File in Maildir

email, filter, postfix, smtp No Responses »

Jan 122010

This is the Ugly workaround

Postfix master.cf setting

maildrop  unix  -       n       n       -       -       pipe
  flags=ODRhu user=vmail argv=/usr/bin/maildrop -w 90 -d ${recipient} ${user} ${domain}

With this setting maildrop wil warn user if their Maildir reach 90% of quota and send warning to user

The problem is, even if user emptying their maildir, users wil always get warning because quotawarn is still in Maildir

[vchkpw] quotawarn question

#
MAILHOME="/var/data/postfix"
DOMAIN="$2"
USER="$1"

QUOTA=`echo "$MAILDIRQUOTA" | cut -f 1 -d S`
USAGE=`du -sb "$MAILHOME/$DOMAIN/$USER/" | awk '{print $1}'`
PERCENT=`echo "$QUOTA * 90/100" | bc`

if ( "$USAGE" < "$PERCENT" )
{
        `/bin/rm -f "$MAILHOME/$DOMAIN/$USER/quotawarn"`
}

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