From bfda20f334021034e6cd736ec3db4186f0af75cb Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <imuwoto@gmail.com>
Date: Thu, 30 Nov 2023 20:58:06 +0900
Subject: [PATCH] wasi: make fdstat_set_flags return ENOTSUP for unimplemented
 flags

---
 libwasi/wasi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libwasi/wasi.c b/libwasi/wasi.c
index 3aade4bb..a724be28 100644
--- a/libwasi/wasi.c
+++ b/libwasi/wasi.c
@@ -1437,12 +1437,15 @@ wasi_fd_fdstat_set_flags(struct exec_context *ctx, struct host_instance *hi,
         uint32_t fdflags = HOST_FUNC_PARAM(ft, params, 1, i32);
         struct wasi_fdinfo *fdinfo = NULL;
         int ret;
+        if ((fdflags & ~WASI_FDFLAG_NONBLOCK) != 0) {
+                ret = ENOTSUP;
+                goto fail;
+        }
         ret = wasi_fd_lookup(wasi, wasifd, &fdinfo);
         if (ret != 0) {
                 goto fail;
         }
         fdinfo->blocking = ((fdflags & WASI_FDFLAG_NONBLOCK) == 0);
-        /* TODO implement other flags */
 fail:
         wasi_fdinfo_release(wasi, fdinfo);
         HOST_FUNC_RESULT_SET(ft, results, 0, i32, wasi_convert_errno(ret));