Re: [fuse-devel] FUSE and reading /proc files

[Fareha S. <fa...@ee...>]

Miklos Szeredi wrote:

>>I was playing around with fusexmp.c and whenever I try to read a /proc 
>>file (such as doing cat /proc/[pid]/stat) it returns nothing. The read 
>>doesn't fail with any errors, but nothing is output to the terminal either.
>>Is this a known problem?
>>    
>>
>
>If you look /proc/PID/stat has a zero size.  If you tell the kernel
>that the file has a zero size, then it will not return any data when
>reading the file.
>
>If you use the direct_io option, the kernel doesn't need the file size
>information and so this will work.
>
>Thanks,
>Miklos
>  
>
Thanks Miklos...I figured that much out a few days ago, but I still 
can't read all the files. For example, reading /proc/[pid]/maps gives an 
Illegal seek error if I try it while running fusexmp, but otherwise it 
works fine. I haven't been able to figure this problem out yet.

Thanks,
Fareha