1 files changed, 3 insertions, 0 deletions
diff --git a/librt/shm.c b/librt/shm.c
index 40e69fa2e..79c98a35b 100644
--- a/librt/shm.c
+++ b/librt/shm.c
@@ -84,6 +84,9 @@ int shm_open(const char *name, int oflag, mode_t mode)
 		 */
 	}
 #endif
+    if (fd < 0 && errno == EISDIR)
+        /* EISDIR is not valid for shm_open, replace it with EINVAL as glibc.  */
+        __set_errno (EINVAL);
 	free(shm_name); /* doesn't affect errno */
 	return fd;
 }