on proc you should use open() close() read() please post the complete code
Quoting "jonas.elofsson" <[email protected]>: > Hi! > > I have a problem reading files in the /proc directory in C. > > I made a module for reading SMARTTEMP temperature sensors, and it > works great. I made it to create one file for each I/O pin under > /proc/smarttemp/. Working beautifully. > > I also made a module for controlling my LCD display, and that to > works like a charm. > > I put together a small test program to read 8 different temperaturs > from different sensors and then display them on the display updating > once every second. > > Works great, for two minutes... > > Then, when one of the /proc files is read for the 1024:th time > problems occurs. It turns out the file descriptors are out..! They > don't seem to get relesaed when I do a fclose (I use fopen and > fclose on them, is this a problem?). > > I get no problems if I change the program to read from a file on the > normal FS instead. > > If I try to read some other file in /proc i get the same error after > 1024 loops... So it seems it's not in my driver code. > > I tried to do a system("cp /proc/smarrtemp/PG01 /var/temp"); for > each measurement and then reading the file in /var instead, trying > to fool it a bit, just for testing. But after about 1024 copies I > still get problems. > > I would be very thankful for any ideas about why this is and how to > get it working. > > I use the image on ACMEs homepage, 2.6 something. =) > > Best regards, Jonas > > > > -- John Crispin hacking, coding, etc blogic on irc _______ ________ __ | |.-----.-----.-----.| | | |.----.| |_ | - || _ | -__| || | | || _|| _| |_______|| __|_____|__|__||________||__| |____| |__| W I R E L E S S F R E E D O M KAMIKAZE (bleeding edge) ----------------------- * 10 oz Vodka Shake well with ice and strain * 10 oz Triple sec mixture into 10 shot glasses. * 10 oz lime juice Salute! ---------------------------------------------------
