From 1a8f8fd86fb89222f6fadab0d9f8a0fb850c8f6f Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Wed, 30 Sep 2009 09:54:29 +0000
Subject: [PATCH] * OpenSolaris compatibility.

---
 src/libutil/archive.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/libutil/archive.cc b/src/libutil/archive.cc
index 4899fbaa4..f30e5b7cf 100644
--- a/src/libutil/archive.cc
+++ b/src/libutil/archive.cc
@@ -302,7 +302,12 @@ struct RestoreSink : ParseSink
 #if HAVE_POSIX_FALLOCATE
         if (len) {
             errno = posix_fallocate(fd, 0, len);
-            if (errno) throw SysError(format("preallocating file of %1% bytes") % len);
+            /* Note that EINVAL may indicate that the underlying
+               filesystem doesn't support preallocation (e.g. on
+               OpenSolaris).  Since preallocation is just an
+               optimisation, ignore it. */
+            if (errno && errno != EINVAL)
+                throw SysError(format("preallocating file of %1% bytes") % len);
         }
 #endif
     }