From e5841beba6b5f5d1a6b7e3ab3ee1825c0a94e53a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Tue, 14 Jun 2022 19:35:24 +0200
Subject: [PATCH] gioerror: Map ENOSYS to G_IO_ERROR_NOT_SUPPORTED

If a wrong syscall is used, we can assume that such feature is not
supported at higher level.
---
 gio/gioerror.c    | 6 ++++++
 gio/tests/error.c | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gio/gioerror.c b/gio/gioerror.c
index 0e39992bb..37c8122dc 100644
--- a/gio/gioerror.c
+++ b/gio/gioerror.c
@@ -230,6 +230,12 @@ g_io_error_from_errno (gint err_no)
       break;
 #endif
 
+#ifdef ENOSYS
+    case ENOSYS:
+      return G_IO_ERROR_NOT_SUPPORTED;
+      break;
+#endif
+
 #ifdef ETIMEDOUT
     case ETIMEDOUT:
       return G_IO_ERROR_TIMED_OUT;
diff --git a/gio/tests/error.c b/gio/tests/error.c
index 298fa88b0..a38008eee 100644
--- a/gio/tests/error.c
+++ b/gio/tests/error.c
@@ -322,7 +322,7 @@ test_error_from_errno (void)
 
 #ifdef ENOSYS
   g_assert_cmpuint (g_io_error_from_errno (ENOSYS), ==,
-                    G_IO_ERROR_FAILED);
+                    G_IO_ERROR_NOT_SUPPORTED);
 #endif
 
 #ifdef ENOMSG