Re: [RFC] [PATCH] sysfs support for Xen attributes

Anthony Liguori wrote:

Arjan van de Ven wrote:

On Thu, 2006-01-12 at 12:53 -0600, Anthony Liguori wrote:

We wish to make management hypercalls as the root user in userspace which means we have to go through the kernel. Currently, we do this

by having /proc/xen/privcmd accept an ioctl() that takes a structure

that describe the register arguments. The kernel interface allows us to control who in userspace can execute hypercalls.

ioctls on proc is evil though (so is ioctl-on-sysfs). It's a device not
a proc file!

I full heartedly agree with you :-)

What about making hypercalls via with a read/write interface into memory mapped by a char device? Any problems with that approach?

Mike



--

Mike D. Day
STSM and Architect, Open Virtualization
IBM Linux Technology Center
[email protected]
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Greg KH <[email protected]>

• References:
  • [RFC] [PATCH] sysfs support for Xen attributes
    • From: "Mike D. Day" <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Greg KH <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: "Mike D. Day" <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Greg KH <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: "Mike D. Day" <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Gerd Hoffmann <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Arjan van de Ven <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Gerd Hoffmann <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Greg KH <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Anthony Liguori <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Arjan van de Ven <[email protected]>
  • Re: [RFC] [PATCH] sysfs support for Xen attributes
    • From: Anthony Liguori <[email protected]>

• Prev by Date: Re: [RFC] [PATCH] sysfs support for Xen attributes
• Next by Date: Re: 2.6.15-$SHA1: VT <-> X sometimes odd
• Previous by thread: Re: [RFC] [PATCH] sysfs support for Xen attributes
• Next by thread: Re: [RFC] [PATCH] sysfs support for Xen attributes
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]