From 4193d62e08964e2c26b27674e33327bf0417bab5 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Thu, 2 Oct 2003 11:55:38 +0000
Subject: * Nix now respects $TMPDIR for the creation of temporary build
 directories. * Retry creation of a temporary directory (with a different
 name) in the   case of EEXIST.

---
 src/util.cc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/util.cc')

diff --git a/src/util.cc b/src/util.cc
index bedd031def3d..ed7562a29d73 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -171,6 +171,26 @@ void makePathReadOnly(const string & path)
 }
 
 
+static string tempName()
+{
+    static int counter = 0;
+    char * s = getenv("TMPDIR");
+    string tmpRoot = s ? canonPath(string(s)) : "/tmp";
+    return (format("%1%/nix-%2%-%3%") % tmpRoot % getpid() % counter++).str();
+}
+
+
+string createTempDir()
+{
+    while (1) {
+	string tmpDir = tempName();
+	if (mkdir(tmpDir.c_str(), 0777) == 0) return tmpDir;
+	if (errno != EEXIST)
+	    throw SysError(format("creating directory `%1%'") % tmpDir);
+    }
+}
+
+
 Verbosity verbosity = lvlError;
 
 static int nestingLevel = 0;
-- 
cgit 1.4.1