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

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