Hi,
I am new to this list. I did go through the FAQ before posting this
question. I have a specific requirment - creating,modifying and deleting
data structures inside the kernel values of which will be passed by an
user application. I know we could do this by writing a system call or by
ioctl command to a character device. My question is can we do this by
writing to /proc file system ? Can we actually create, modify and delete
data structures by accessing this file system ?
Any pointers will be appreciated.
Thanks,
Srini.
Srinivasan Venkatraman wrote:
> I am new to this list. I did go through the FAQ before posting this
> question. I have a specific requirment - creating,modifying and deleting
> data structures inside the kernel values of which will be passed by an
> user application. I know we could do this by writing a system call or by
> ioctl command to a character device. My question is can we do this by
> writing to /proc file system ? Can we actually create, modify and delete
> data structures by accessing this file system ?
You could definitely use procfs, but it sounds like your example would
be complex. Lately mounting filesystems has become a cheap operation in
Linux. Mount/umount is also a convenient synchronization point. So,
maybe consider implementing your own tiny filesystems - a data
filesystem, where you mmap(2)/read(2)/write(2) data values, and a
control filesystem, where you control the system and manipulate data
values.
That way, you can use standard Unix syscalls, standard Unix tools and
standard Unix permissions to accomplish your domain-specific task.
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