From 00c7905a8a85668d0993420e356a56002ab23905 Mon Sep 17 00:00:00 2001
From: Utkarsh Kukreti <utkarshkukreti@gmail.com>
Date: Wed, 28 Oct 2015 16:15:11 +0530
Subject: Use `libc::PATH_MAX` in `NixPath::with_nix_path`.

---
 src/lib.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 7fdcad6d..826ed838 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -43,7 +43,7 @@ pub mod unistd;
  *
  */
 
-use libc::c_char;
+use libc::{c_char, PATH_MAX};
 use std::{ptr, result};
 use std::ffi::CStr;
 use std::path::{Path, PathBuf};
@@ -126,10 +126,9 @@ impl NixPath for [u8] {
 
     fn with_nix_path<T, F>(&self, f: F) -> Result<T>
             where F: FnOnce(&CStr) -> T {
-        // TODO: Extract this size as a const
-        let mut buf = [0u8; 4096];
+        let mut buf = [0u8; PATH_MAX as usize];
 
-        if self.len() >= 4096 {
+        if self.len() >= PATH_MAX as usize {
             return Err(Error::InvalidPath);
         }
 
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