From 8e91bb42970e0b8060c68b2fbf339d2598e4b619 Mon Sep 17 00:00:00 2001 From: Joachim Wiberg Date: Wed, 6 May 2026 22:09:29 +0200 Subject: [PATCH] keventd: disable legacy kernel uevent helper at startup Signed-off-by: Joachim Wiberg --- src/keventd.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/src/keventd.c b/src/keventd.c index 466580cf..058077dd 100644 --- a/src/keventd.c +++ b/src/keventd.c @@ -378,6 +378,17 @@ static void init_dev_condition_dir(void) warn("Failed creating dev condition directory %s", dir); } +static void disable_uevent_helper(void) +{ + FILE *fp; + + fp = fopen("/proc/sys/kernel/hotplug", "w"); + if (!fp) + return; + fputs("\n", fp); + fclose(fp); +} + static void set_logging(int prio) { setlogmask(LOG_UPTO(prio)); @@ -487,6 +498,9 @@ int main(int argc, char *argv[]) init_power_supply(); init_dev_condition_dir(); + /* Disable legacy kernel uevent helper; we own events via netlink */ + disable_uevent_helper(); + /* Set up netlink socket for kernel uevents */ pfd.events = POLLIN; pfd.fd = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_KOBJECT_UEVENT);