how to read /proc/pid/status in sched.c

linuxdoniv · 07-19-2008, 09:37 AM

Hi,

I was wondering how I could read file like /proc/pid/status in sched.c which can not include user space library routines.

How to manipulate the data in such a file from kernel routines..

Thanks in advance for any input..

theNbomr · 07-20-2008, 10:05 AM

I am fairly sure that even if you could access '/proc/pid/status' from kernel space, you could not use that access to manipulate it. It is not an actual file in the sense of occupying disk storage; it is a virtual file whose 'contents' are provided by kernel code.
--- rod.

linuxdoniv · 07-21-2008, 02:45 AM

Hi,

Since I can't use FILE *fp etc to read /proc/pid/status in sched.c, how do I read that file in sched.c .I dont want to write to that file but is reading of that file possible like this. How do I do that.

Thanks in advance.

theNbomr · 07-21-2008, 09:49 PM

You might be able to make direct calls to the kernel module functions that implement that virtual file system. Would require some sleuthing to determine exactly what those are...
--- rod.