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 7fa67c2031a5db52ca31d6005ae699e4afd48bab..2204708dbf7a583ab21669e1efa4921c64b2efe5 100644 (file)
--- 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 */