From: Kay Sievers Date: Thu, 5 Apr 2007 23:40:38 +0000 (+0200) Subject: Driver core: warn when userspace writes to the uevent file in a non-supported way X-Git-Tag: v2.6.22-rc1~1119^2~14 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=22af74f3b221f1436a37554501431e51c06ee77e;p=linux-2.6 Driver core: warn when userspace writes to the uevent file in a non-supported way 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/base/core.c b/drivers/base/core.c index 72c6ee5747..f69305c726 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"); kobject_uevent(&dev->kobj, KOBJ_ADD); return count; }