From cb8a9d74a07da5ea83cbad6f8402c14710689df2 Mon Sep 17 00:00:00 2001
From: shihchienc <shihchienc@google.com>
Date: Thu, 11 Apr 2024 06:16:07 +0000
Subject: [PATCH] [Thread] make sure buffer size is enough

inotify event size is dynamic, we need to make sure read would not
return error when having inotify event.

Bug: 333829392
Test: manual check `Invalid argument` error won't happen
Change-Id: I3cac8d1519659c6b1b53c1d41013818adab876c7
---
 threadnetwork/aidl/default/socket_interface.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/threadnetwork/aidl/default/socket_interface.cpp b/threadnetwork/aidl/default/socket_interface.cpp
index 7bdf39ad5d..0544502ea9 100644
--- a/threadnetwork/aidl/default/socket_interface.cpp
+++ b/threadnetwork/aidl/default/socket_interface.cpp
@@ -23,6 +23,7 @@
 #include "socket_interface.hpp"
 
 #include <errno.h>
+#include <linux/limits.h>
 #include <openthread/logging.h>
 #include <sys/inotify.h>
 #include <sys/socket.h>
@@ -273,7 +274,7 @@ void SocketInterface::WaitForSocketFileCreated(const char* aPath) {
         }
 
         if (FD_ISSET(inotifyFd, &fds)) {
-            char buffer[sizeof(struct inotify_event)];
+            char buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
             ssize_t bytesRead = read(inotifyFd, buffer, sizeof(buffer));
 
             VerifyOrDie(bytesRead >= 0, OT_EXIT_ERROR_ERRNO);