From ebddfb0dee14d34a07f5ac47a64dd5df8b9e6a57 Mon Sep 17 00:00:00 2001
From: Mike Yuan <me@yhndnzj.com>
Date: Tue, 19 Nov 2024 19:56:28 +0100
Subject: [PATCH] basic: introduce missing_pidfd.h

---
 src/basic/missing_pidfd.h | 48 +++++++++++++++++++++++++++++++++++++++
 src/basic/pidfd-util.h    |  4 +---
 2 files changed, 49 insertions(+), 3 deletions(-)
 create mode 100644 src/basic/missing_pidfd.h

diff --git a/src/basic/missing_pidfd.h b/src/basic/missing_pidfd.h
new file mode 100644
index 00000000000..4c81514284e
--- /dev/null
+++ b/src/basic/missing_pidfd.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <linux/types.h>
+#if HAVE_PIDFD_OPEN
+#include <sys/pidfd.h>
+#endif
+
+#ifndef PIDFS_IOCTL_MAGIC
+#  define PIDFS_IOCTL_MAGIC 0xFF
+#endif
+
+#ifndef PIDFD_GET_CGROUP_NAMESPACE
+#  define PIDFD_GET_CGROUP_NAMESPACE              _IO(PIDFS_IOCTL_MAGIC, 1)
+#  define PIDFD_GET_IPC_NAMESPACE                 _IO(PIDFS_IOCTL_MAGIC, 2)
+#  define PIDFD_GET_MNT_NAMESPACE                 _IO(PIDFS_IOCTL_MAGIC, 3)
+#  define PIDFD_GET_NET_NAMESPACE                 _IO(PIDFS_IOCTL_MAGIC, 4)
+#  define PIDFD_GET_PID_NAMESPACE                 _IO(PIDFS_IOCTL_MAGIC, 5)
+#  define PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE    _IO(PIDFS_IOCTL_MAGIC, 6)
+#  define PIDFD_GET_TIME_NAMESPACE                _IO(PIDFS_IOCTL_MAGIC, 7)
+#  define PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE   _IO(PIDFS_IOCTL_MAGIC, 8)
+#  define PIDFD_GET_USER_NAMESPACE                _IO(PIDFS_IOCTL_MAGIC, 9)
+#  define PIDFD_GET_UTS_NAMESPACE                 _IO(PIDFS_IOCTL_MAGIC, 10)
+#endif
+
+#ifndef PIDFD_GET_INFO
+struct pidfd_info {
+        __u64 mask;
+        __u64 cgroupid;
+        __u32 pid;
+        __u32 tgid;
+        __u32 ppid;
+        __u32 ruid;
+        __u32 rgid;
+        __u32 euid;
+        __u32 egid;
+        __u32 suid;
+        __u32 sgid;
+        __u32 fsuid;
+        __u32 fsgid;
+        __u32 spare0[1];
+};
+
+#define PIDFD_GET_INFO          _IOWR(PIDFS_IOCTL_MAGIC, 11, struct pidfd_info)
+#define PIDFD_INFO_PID          (1UL << 0)
+#define PIDFD_INFO_CREDS        (1UL << 1)
+#define PIDFD_INFO_CGROUPID     (1UL << 2)
+#endif
diff --git a/src/basic/pidfd-util.h b/src/basic/pidfd-util.h
index 3b149cab862..4304c5aa6a5 100644
--- a/src/basic/pidfd-util.h
+++ b/src/basic/pidfd-util.h
@@ -2,11 +2,9 @@
 #pragma once
 
 #include <stdint.h>
-#if HAVE_PIDFD_OPEN
-#include <sys/pidfd.h>
-#endif
 #include <sys/types.h>
 
+#include "missing_pidfd.h"
 #include "missing_syscall.h"
 
 int pidfd_get_pid(int fd, pid_t *ret);
-- 
2.47.3