From 27e45c744dbfc2a341e8142cb869fcf178a52b7c Mon Sep 17 00:00:00 2001
From: Kurt Himebauch <136133082+xXJSONDeruloXx@users.noreply.github.com>
Date: Mon, 9 Nov 2026 17:25:44 -0500
Subject: [PATCH] fix(native): the SysV segment lock is retried when a signal
 interrupts it

---
 tools/nativeguest/hook/sysv_shm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/nativeguest/hook/sysv_shm.c b/tools/nativeguest/hook/sysv_shm.c
index 17154e4df..66089cf9b 100644
--- a/tools/nativeguest/hook/sysv_shm.c
+++ b/tools/nativeguest/hook/sysv_shm.c
@@ -139,7 +139,11 @@ static int shm_mark_attached(int id, int attached) {
 static int shm_lock_dir(int op) {
     int fd = shm_open_file(".lock", O_RDWR | O_CREAT, 0600);
     if (fd < 0) return -1;
-    if (syscall(SYS_flock, fd, op) != 0) {
+    long rc;
+    do {
+        rc = syscall(SYS_flock, fd, op);
+    } while (rc != 0 && errno == EINTR);
+    if (rc != 0) {
         syscall(SYS_close, fd);
         return -1;
     }