From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 22 Jan 2015 01:36:02 +0000 (+1000)
Subject: logind: fix sd_eviocrevoke ioctl call
X-Git-Tag: v219~358
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=8dbce34b0373923c7aa7d795024bbedb0a85c7ea;hp=b5b38b41c37dbe1a117af9bf99e94b58ac91239a;p=elogind.git

logind: fix sd_eviocrevoke ioctl call

If the third argument is non-null, the kernel will always error out with
EINVAL and devices won't get revoked.

Reported-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---

diff --git a/src/login/logind-session-device.c b/src/login/logind-session-device.c
index 932abb82f..c2de86225 100644
--- a/src/login/logind-session-device.c
+++ b/src/login/logind-session-device.c
@@ -107,7 +107,7 @@ static int sd_eviocrevoke(int fd) {
 
         assert(fd >= 0);
 
-        r = ioctl(fd, EVIOCREVOKE, 1);
+        r = ioctl(fd, EVIOCREVOKE, NULL);
         if (r < 0) {
                 r = -errno;
                 if (r == -EINVAL && !warned) {