Re: [PATCH 2/8] PM: suspend_block: Add driver to access suspend blockers from user-space

Peter Zijlstra
2010-05-26T08:44:44Z

On Fri, 2010-05-21 at 15:46 -0700, Arve Hjønnevåg wrote:
> +To create a suspend blocker from user space, open the suspend_blocker
> special
> +device file:
> +
> + fd = open("/dev/suspend_blocker", O_RDWR | O_CLOEXEC);
> +
> +then optionally call:
> +
> + ioctl(fd, SUSPEND_BLOCKER_IOCTL_SET_NAME(strlen(name)), name);
> +
> +To activate the suspend blocker call:
> +
> + ioctl(fd, SUSPEND_BLOCKER_IOCTL_BLOCK);
> +
> +To deactivate it call:
> +
> + ioctl(fd, SUSPEND_BLOCKER_IOCTL_UNBLOCK);
> +
> +To destroy the suspend blocker, close the device:
> +
> + close(fd);

Urgh, please let the open() be BLOCK, the close() be UNBLOCK, and keep
the SET_NAME thing if you really care.