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-rw-r--r--minui/events.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/minui/events.cpp b/minui/events.cpp
index f331ed68a..87f811225 100644
--- a/minui/events.cpp
+++ b/minui/events.cpp
@@ -90,9 +90,11 @@ static int inotify_cb(int fd, __unused uint32_t epevents) {
// The inotify will put one or several complete events.
// Should not read part of one event.
- size_t event_len;
- int ret = ioctl(fd, FIONREAD, &event_len);
+ int event_len_int;
+ int ret = ioctl(fd, FIONREAD, &event_len_int);
if (ret != 0) return -1;
+ if (event_len_int < 0) return -1;
+ size_t event_len = event_len_int;
std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(INPUT_DEV_DIR), closedir);
if (!dir) {