From 035daa663b74f0297e539816a7bc262171f7597b Mon Sep 17 00:00:00 2001
From: s-hadinger <49731213+s-hadinger@users.noreply.github.com>
Date: Fri, 26 Jul 2024 12:44:25 +0200
Subject: [PATCH] Berry `file.write()` raises an exception on failure (ex: disk
 full) (#21849)

---
 CHANGELOG.md                        | 1 +
 lib/libesp32/berry/src/be_filelib.c | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 61d025f59..1332a0041 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 - Berry `light.get` for separate RGB/CT (#21818)
 - Berry `bytes` setters and getters with negative offsets (#21835)
+- Berry `file.write()` raises an exception on failure (ex: disk full)
 
 ### Removed
 - Berry internal: remove class from closure to simplify code (#21839)
diff --git a/lib/libesp32/berry/src/be_filelib.c b/lib/libesp32/berry/src/be_filelib.c
index f4f760b1e..5bd38bad8 100644
--- a/lib/libesp32/berry/src/be_filelib.c
+++ b/lib/libesp32/berry/src/be_filelib.c
@@ -26,7 +26,10 @@ static int i_write(bvm *vm)
         } else {
             data = be_tobytes(vm, 2, &size);
         }
-        be_fwrite(fh, data, size);
+        size_t bw = be_fwrite(fh, data, size);
+        if (bw != size) {
+            be_raise(vm, "io_error", "write failed");
+        }
     }
     be_return_nil(vm);
 }