1 files changed, 28 insertions, 0 deletions

diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 67838f3aa20a..9765dab95cbd 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -14,6 +14,7 @@
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/vfs.h>
+#include <sys/syscall.h>
 #include "hostfs.h"
 #include <utime.h>
 
@@ -360,6 +361,33 @@ int rename_file(char *from, char *to)
         return 0;
 }
 
+int rename2_file(char *from, char *to, unsigned int flags)
+{
+        int err;
+
+#ifndef SYS_renameat2
+#  ifdef __x86_64__
+#    define SYS_renameat2 316
+#  endif
+#  ifdef __i386__
+#    define SYS_renameat2 353
+#  endif
+#endif
+
+#ifdef SYS_renameat2
+        err = syscall(SYS_renameat2, AT_FDCWD, from, AT_FDCWD, to, flags);
+        if (err < 0) {
+                if (errno != ENOSYS)
+                        return -errno;
+                else
+                        return -EINVAL;
+        }
+        return 0;
+#else
+        return -EINVAL;
+#endif
+}
+
 int do_statfs(char *root, long *bsize_out, long long *blocks_out,
               long long *bfree_out, long long *bavail_out,
               long long *files_out, long long *ffree_out,