1 files changed, 2 insertions, 0 deletions

diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index d7404c621ff7..b5afcfd0f861 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -191,6 +191,8 @@ int os_open_file(const char *file, struct openflags flags, int mode)
                 f |= O_TRUNC;
         if (flags.e)
                 f |= O_EXCL;
+        if (flags.a)
+                f |= O_APPEND;
 
         fd = open64(file, f, mode);
         if (fd < 0)