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--- Begin Message ---
The udevtrigger tool is responsible for firing hotplug
events for all devices that have been enumerated by
the kernel before the hotplug daemon is running. This
happens during the 'early' (coldplug) stage of procd.
A filter is in place during the scan of devices that
requires a dev attribute file to be present in the
sysfs. The argument is that without this attribute you
are not able to create a device node under '/dev'.
But there might be other hotplug scripts that are for
example do detection of certain connected devices that
do not have a dev attribute file, for example USB
devices and their siblings. To make sure these hotplug
scripts are also called during coldplug the filter is
removed.
Signed-off-by: Tjalling Hattink <t.hatt...@fugro.com>
---
plug/udevtrigger.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/plug/udevtrigger.c b/plug/udevtrigger.c
index f87a95e..db0c29a 100644
--- a/plug/udevtrigger.c
+++ b/plug/udevtrigger.c
@@ -161,9 +161,8 @@ static int device_list_insert(const char *path)
dbg("add '%s'" , path);
- /* we only have a device, if we have a dev and an uevent file */
- if (!device_has_attribute(path, "/dev", S_IRUSR) ||
- !device_has_attribute(path, "/uevent", S_IWUSR))
+ /* we can only trigger a hotplug event, if we have an uevent file */
+ if (!device_has_attribute(path, "/uevent", S_IWUSR))
return -1;
strlcpy(devpath, &path[4], sizeof(devpath));
--
2.14.1
--- End Message ---
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