[gnome-settings-daemon/benzea/fix-read-len-check] rfkill: Fix rfkill event read length check

[Benjamin Berg <bberg src gnome org>]

commit f6ce8d3f1a70a0e63699b00905921841f0474bb2
Author: Benjamin Berg <bberg redhat com>
Date:   Wed Apr 14 11:55:51 2021 +0200

    rfkill: Fix rfkill event read length check
    
    The kernel may return a short read for rfkill events in case it is using
    an older API version while g-s-d was compiled using the newer struct. As
    this is perfectly valid, we need to check the read length against
    RFKILL_EVENT_SIZE_V1 rather than the size of the struct.

 plugins/rfkill/rfkill-glib.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/plugins/rfkill/rfkill-glib.c b/plugins/rfkill/rfkill-glib.c
index 22309dce..e799174a 100644
--- a/plugins/rfkill/rfkill-glib.c
+++ b/plugins/rfkill/rfkill-glib.c
@@ -342,7 +342,7 @@ event_cb (GIOChannel   *source,
 
        if (condition & G_IO_IN) {
                GIOStatus status;
-               struct rfkill_event event;
+               struct rfkill_event event = { 0 };
                gsize read;
 
                status = g_io_channel_read_chars (source,
@@ -351,7 +351,7 @@ event_cb (GIOChannel   *source,
                                                  &read,
                                                  NULL);
 
-               while (status == G_IO_STATUS_NORMAL && read == sizeof(event)) {
+               while (status == G_IO_STATUS_NORMAL && read >= RFKILL_EVENT_SIZE_V1) {
                        struct rfkill_event *event_ptr;
 
                        print_event (&event);