> In the future we will allow the uevent type to be written to the uevent
> file to trigger the different types of uevents. But for now, as we only
> support the ADD event, warn if userspace tries to write anything else to
> this file.
>
> Signed-off-by: Kay Sievers <[email protected]>
> Signed-off-by: Greg Kroah-Hartman <[email protected]>
> ---
> drivers/base/core.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index 72c6ee5..f69305c 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -296,6 +296,9 @@ out:
> static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,
> const char *buf, size_t count)
> {
> + if (memcmp(buf, "add", 3) != 0)
> + dev_err(dev, "uevent: unsupported action-string; this will "
> + "be ignored in a future kernel version");
Warnings good, lack of rate limiting extremely bad indeed.
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