From e9e4d52de8a8424a11f61512a75902ab06f29375 Mon Sep 17 00:00:00 2001
From: CCode <chris.gcode@gmail.com>
Date: Mon, 16 Jan 2023 13:08:42 +0000
Subject: [PATCH] gfileutils: Use 'write' with 'count' <= max value of its
 return type

Limit `count` so that `write` can properly report the number of written bytes.

Limits:
 - POSIX: `SSIZE_MAX`
 - Windows: `INT_MAX`

Fixes: #2883
---
 glib/gfileutils.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/glib/gfileutils.c b/glib/gfileutils.c
index 44c22f3ee..131484901 100644
--- a/glib/gfileutils.c
+++ b/glib/gfileutils.c
@@ -1143,8 +1143,13 @@ write_to_file (const gchar  *contents,
     {
       gssize s;
 
-      s = write (fd, contents, MIN (length, G_MAXSIZE));
-
+#ifdef G_OS_WIN32
+      /* 'write' on windows uses int types, so limit count to G_MAXINT */
+      s = write (fd, contents, MIN (length, (gsize) G_MAXINT));
+#else
+      /* Limit count to G_MAXSSIZE to fit into the return value. */
+      s = write (fd, contents, MIN (length, (gsize) G_MAXSSIZE));
+#endif
       if (s < 0)
         {
           int saved_errno = errno;