From 479bb9df2cd21ec1b144999638065f6305a9beb4 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Wed, 5 Dec 2012 13:59:08 +0100
Subject: [PATCH] fail nicely when trying to open a directory

---
 src/file.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/file.cc b/src/file.cc
index 2aedb67b..985e802f 100644
--- a/src/file.cc
+++ b/src/file.cc
@@ -83,6 +83,11 @@ Buffer* create_buffer_from_file(const String& filename)
     }
     struct stat st;
     fstat(fd, &st);
+    if (S_ISDIR(st.st_mode))
+    {
+        close(fd);
+        throw file_access_error(filename, "is a directory");
+    }
     const char* data = (const char*)mmap(nullptr, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
     auto cleanup = on_scope_end([&]{ munmap((void*)data, st.st_size); close(fd); });