Clean exit after CTRL+C

[Markku M{enp{{]

My program uses temporary files all the time. To allow clean exit
after CTRL+C, I put all names of the opened temporary files in
a static table. When my signal handler detects a CTRL+C, it reads
the table and removes all the files from the table and deletes them
from the disk.

My problem occures when I call an another program from my program.
I first redirect the stdout to a file and then call the program, 
whose output goes into the file. If CTRL+C is pressed during the 
called program it exits cleanly (this leaves no files). Now the 
parent programs' signal handler also receives CTRL+C and goes to 
do what it was designed to do, but the redirection is still in 
effect and the associated stream is still open. So it can not be 
deleted. So there is one file I have to get rid of. How can this 
be taken care of ?

Note that I can't pass any parameters to my signal handler, all 
is done via static variables. I use fclosall() which doesn't close 
stdout or stderr.

I thank you for your help,

Markku (jackin at vehka.uta.fi)