From: Tom Gundersen <teg@jklm.no>
Date: Tue, 14 Apr 2015 13:15:49 +0000 (+0200)
Subject: sd-device: allow uevent files to be write-only
X-Git-Tag: v226.4~1^2~472
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=6888be2d3963c5a1b03619a8ae315d7d42b1b98c;p=elogind.git

sd-device: allow uevent files to be write-only
---

diff --git a/src/libelogind/sd-device/sd-device.c b/src/libelogind/sd-device/sd-device.c
index b828fa830..7d52e3cc1 100644
--- a/src/libelogind/sd-device/sd-device.c
+++ b/src/libelogind/sd-device/sd-device.c
@@ -499,7 +499,10 @@ int device_read_uevent_file(sd_device *device) {
         path = strjoina(syspath, "/uevent");
 
         r = read_full_file(path, &uevent, &uevent_len);
-        if (r < 0) {
+        if (r == -EACCES)
+                /* empty uevent files may be write-only */
+                return 0;
+        else if (r < 0) {
                 log_debug("sd-device: failed to read uevent file '%s': %s", path, strerror(-r));
                 return r;
         }