From: Christian Brauner <brauner@kernel.org>
Date: Thu, 22 Jan 2026 10:48:49 +0000 (+0100)
Subject: tools: update mount.h header
X-Git-Tag: v7.1-rc1~172^2~8^2~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fc1a05de0058bc1dbbc202f6f6cdb25ee0bae16d;p=thirdparty%2Fkernel%2Flinux.git

tools: update mount.h header

Update the mount.h header so we can rely on it in the selftests.

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-4-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/tools/include/uapi/linux/mount.h b/tools/include/uapi/linux/mount.h
index 7fa67c2031a5d..2204708dbf7a5 100644
--- a/tools/include/uapi/linux/mount.h
+++ b/tools/include/uapi/linux/mount.h
@@ -61,7 +61,8 @@
 /*
  * open_tree() flags.
  */
-#define OPEN_TREE_CLONE		1		/* Clone the target tree and attach the clone */
+#define OPEN_TREE_CLONE		(1 << 0)	/* Clone the target tree and attach the clone */
+#define OPEN_TREE_NAMESPACE	(1 << 1)	/* Clone the target tree into a new mount namespace */
 #define OPEN_TREE_CLOEXEC	O_CLOEXEC	/* Close the file on execve() */
 
 /*
@@ -109,6 +110,7 @@ enum fsconfig_command {
  * fsmount() flags.
  */
 #define FSMOUNT_CLOEXEC		0x00000001
+#define FSMOUNT_NAMESPACE	0x00000002	/* Create the mount in a new mount namespace */
 
 /*
  * Mount attributes.
@@ -197,7 +199,10 @@ struct statmount {
  */
 struct mnt_id_req {
 	__u32 size;
-	__u32 spare;
+	union {
+		__u32 mnt_ns_fd;
+		__u32 mnt_fd;
+	};
 	__u64 mnt_id;
 	__u64 param;
 	__u64 mnt_ns_id;
@@ -232,4 +237,9 @@ struct mnt_id_req {
 #define LSMT_ROOT		0xffffffffffffffff	/* root mount */
 #define LISTMOUNT_REVERSE	(1 << 0) /* List later mounts first */
 
+/*
+ * @flag bits for statmount(2)
+ */
+#define STATMOUNT_BY_FD		0x00000001U	/* want mountinfo for given fd */
+
 #endif /* _UAPI_LINUX_MOUNT_H */