From: Debian GNOME Maintainers
 <pkg-gnome-maintainers@lists.alioth.debian.org>
Date: Wed, 29 Jun 2022 08:02:49 +0000
Subject: file-type

===================================================================
---
 gio/gfile.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 po/zh_CN.po |  3 +++
 2 files changed, 73 insertions(+)

diff --git a/gio/gfile.c b/gio/gfile.c
index a2ded14..e37bc36 100644
--- a/gio/gfile.c
+++ b/gio/gfile.c
@@ -39,6 +39,9 @@
 
 #include <string.h>
 #include <sys/types.h>
+#include <mntent.h>
+#include <sys/vfs.h>
+#include <syslog.h>
 
 #include "gfile.h"
 #include "glib/gstdio.h"
@@ -339,6 +342,29 @@ static gboolean           g_file_real_measure_disk_usage_finish   (GFile
                                                                    guint64                       *num_files,
                                                                    GError                       **error);
 
+static const char* get_fs_type (char* path)
+{
+    const char*     fs_type = NULL;
+    struct mntent*  m = NULL;
+    FILE*           f = NULL;
+
+    f = setmntent ("/etc/mtab", "r");
+    if (!f) {
+        syslog (LOG_ERR, "error:%s", strerror(errno));
+    }
+
+    while ((m = getmntent(f))) {
+        if (!path) continue;
+        if (!m->mnt_dir) continue;
+        if (!strcmp (path, m->mnt_dir)) {
+            fs_type = g_strdup_printf("%s", m->mnt_type);
+        }
+    }
+    endmntent (f);
+
+    return fs_type;
+}
+
 typedef GFileIface GFileInterface;
 G_DEFINE_INTERFACE (GFile, g_file, G_TYPE_OBJECT)
 
@@ -3457,10 +3483,32 @@ g_file_copy (GFile                  *source,
   GFileIface *iface;
   GError *my_error;
   gboolean res;
+  const char* fs_type;
+  GMount* destination_mount;
+  GFile* root;
+  struct stat s;
 
   g_return_val_if_fail (G_IS_FILE (source), FALSE);
   g_return_val_if_fail (G_IS_FILE (destination), FALSE);
 
+  destination_mount = g_file_find_enclosing_mount(g_file_get_parent(destination), NULL, NULL);
+  if ( destination_mount != NULL) {
+    root = g_mount_get_default_location (destination_mount);
+    fs_type = get_fs_type (g_file_get_path(root));
+    if(fs_type != NULL) {
+      if(!strcmp(fs_type,"vfat") || !strcmp(fs_type,"fat32")) {
+        if (stat(g_file_get_path(source), &s) == 0) {
+          if(s.st_size > 4294967296) {
+            g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("The file is too large, the fat format file system only supports files within 4G,can be imported in device after compression"));
+            return FALSE;
+          }
+        }
+      }
+
+      g_free(fs_type);
+    }
+  }
+
   if (g_cancellable_set_error_if_cancelled (cancellable, error))
     return FALSE;
 
@@ -3659,10 +3707,32 @@ g_file_move (GFile                  *source,
   GFileIface *iface;
   GError *my_error;
   gboolean res;
+  const char* fs_type;
+  GMount* destination_mount;
+  GFile* root;
+  struct stat s;
 
   g_return_val_if_fail (G_IS_FILE (source), FALSE);
   g_return_val_if_fail (G_IS_FILE (destination), FALSE);
 
+  destination_mount = g_file_find_enclosing_mount(g_file_get_parent(destination), NULL, NULL);
+  if ( destination_mount != NULL) {
+    root = g_mount_get_default_location (destination_mount);
+  
+    fs_type = get_fs_type (g_file_get_path(root));
+    if(fs_type != NULL) {
+      if(!strcmp(fs_type,"vfat") || !strcmp(fs_type,"fat32")) {
+        if (stat(g_file_get_path(source), &s) == 0) {
+          if(s.st_size > 4294967296) {
+            g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("The file is too large, the fat format file system only supports files within 4G,can be moved in device after compression"));
+            return FALSE;
+          }
+        }
+      }
+      g_free(fs_type);
+    }
+  }
+
   if (g_cancellable_set_error_if_cancelled (cancellable, error))
     return FALSE;
 
diff --git a/po/zh_CN.po b/po/zh_CN.po
index 4e4adb5..1a46756 100644
--- a/po/zh_CN.po
+++ b/po/zh_CN.po
@@ -43,6 +43,9 @@ msgstr "GApplication 选项"
 msgid "Show GApplication options"
 msgstr "显示 GApplication 选项"
 
+msgid "The file is too large, the fat format file system only supports files within 4G,can be imported in device after compression"
+msgstr "文件太大，fat格式文件系统只支持4G以内的文件，压缩后可以导入设备"
+
 #: ../gio/gapplication.c:538
 msgid "Enter GApplication service mode (use from D-Bus service files)"
 msgstr "进入 GApplication 服务模式(从 D-Bus 服务文件中调用)"