[FIX] #166960 【文件管理器】在权限细化界面添加完其他用户权限后，对该文档进行编辑保存后，细化权限界面需要重新添加其他用户权限

gio/glocalfileoutputstream.c

@@ -46,6 +46,7 @@
 #include <unistd.h>
 #include "gfiledescriptorbased.h"
 #include <sys/uio.h>
+#include <sys/xattr.h>
 #endif
 
 #include "glib-private.h"
@@ -860,6 +861,21 @@ handle_overwrite_open (const char    *filename,
   int errsv = 0;
   gboolean replace_destination_set = (flags & G_FILE_CREATE_REPLACE_DESTINATION);
 
+  #ifdef G_OS_UNIX
+  char acl_buf[1024];
+  ssize_t acl_size = getxattr(filename, "system.posix_acl_access", acl_buf, sizeof(acl_buf));
+
+  gboolean has_acl_buf = FALSE;
+  if (acl_size == -1) {
+    g_debug("Error getting ACL with %s", filename);
+  } else if (acl_size == 0) {
+    g_debug("No ACL found with %s.\n", filename);
+  } else {
+    g_debug("%s ACL: %.*s\n", filename, (int)acl_size, acl_buf);
+    has_acl_buf = TRUE;
+  }
+#endif
+
   mode = mode_from_flags_or_info (flags, reference_info);
 
   /* We only need read access to the original file if we are creating a backup.
@@ -1038,6 +1054,7 @@ handle_overwrite_open (const char    *filename,
       
       dirname = g_path_get_dirname (filename);
       tmp_filename = g_build_filename (dirname, ".goutputstream-XXXXXX", NULL);
+
       g_free (dirname);
 
       tmpfd = g_mkstemp_full (tmp_filename, (readable ? O_RDWR : O_WRONLY) | O_BINARY, mode);
@@ -1045,6 +1062,12 @@ handle_overwrite_open (const char    *filename,
 	{
 	  g_free (tmp_filename);
 	  goto fallback_strategy;
+	} else {
+#ifdef G_OS_UNIX
+    if (has_acl_buf) {
+      setxattr(tmp_filename, "system.posix_acl_access", acl_buf, acl_size, 0);
+    }
+#endif
   }
       
       /* try to keep permissions (unless replacing) */