How to know the open files of a process

[Fernando_4]

I am trying to write a C program to reveal the opened files of a given process. I was using the pstat_getfile function but the second step function pstat_getfiledetails, shown in the link below, lacks in my /usr/include/sys/pstat.h.
What can I do ?

http://docs.hp.com/cgi-bin/otsearch/getfile?top=/hpux/onlinedocs/B2355-90693/B2355-90693_top.html&id=/hpux/onlinedocs/B2355-90693/00/01/140-con.html&searchterms=pstat_getfile

[Tim Malnati]

Instead of trying to reinvent the wheel why not just use some tried and true PD code instead. The source for lsof is available on the Porting and Archive Center at the following link: http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.51 Just take what you want and leave the rest.

[Fernando_4]

I tried the lsof and it is really good ! But my application would do other things and I would like to add those functions of lsof to my programming. How could I do that ?