m/b/circular: check ftruncate return value

2015-11-13 17:17:02 +11:00 · 2015-11-13 17:17:02 +11:00 · 584b57b669
commit 584b57b669
parent 8b16317b0e
1 changed files with 2 additions and 1 deletions
--- a/memory/buffer/circular.cpp
+++ b/memory/buffer/circular.cpp
@ -84,7 +84,8 @@ circular::circular (size_t bytes)
    util::scoped_function raii ([&name] (void) { shm_unlink (name.c_str ()); });

    // embiggen to the desired size
-    ftruncate (fd, bytes);
+    if (ftruncate (fd, bytes))
+        errno_error::throw_code ();

    // pre-allocate a sufficiently large virtual memory block. it doesn't
    // matter much what flags we use because we'll just be overwriting it