From 8e8c8d3c871666d3c4fb0cda0147fb2231beeb09 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Sat, 19 Nov 2005 20:05:14 +0000
Subject: Updated to fedora-glibc-20051119T1959

---
 nscd/initgrcache.c | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

(limited to 'nscd/initgrcache.c')

diff --git a/nscd/initgrcache.c b/nscd/initgrcache.c
index bb6dee2b4e..eb03fc7a5d 100644
--- a/nscd/initgrcache.c
+++ b/nscd/initgrcache.c
@@ -26,8 +26,15 @@
 #include <time.h>
 #include <unistd.h>
 #include <sys/mman.h>
-#include <dbg_log.h>
-#include <nscd.h>
+#ifdef HAVE_SENDFILE
+# include <sys/sendfile.h>
+#endif
+
+#include "dbg_log.h"
+#include "nscd.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 #include "../nss/nsswitch.h"
 
@@ -344,7 +351,29 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req,
 	     unnecessarily let the receiver wait.  */
 	  assert (fd != -1);
 
-	  written = writeall (fd, &dataset->resp, total);
+#ifdef HAVE_SENDFILE
+	  if (__builtin_expect (db->mmap_used, 1))
+	    {
+	      assert (db->wr_fd != -1);
+	      assert ((char *) &dataset->resp > (char *) db->data);
+	      assert ((char *) &dataset->resp - (char *) db->head
+		      + total
+		      <= (sizeof (struct database_pers_head)
+			  + db->head->module * sizeof (ref_t)
+			  + db->head->data_size));
+	      off_t off = (char *) &dataset->resp - (char *) db->head;
+	      written = sendfile (fd, db->wr_fd, &off, total);
+# ifndef __ASSUME_SENDFILE
+	      if (written == -1 && errno == ENOSYS)
+		goto use_write;
+# endif
+	    }
+	  else
+# ifndef __ASSUME_SENDFILE
+	  use_write:
+# endif
+#endif
+	    written = writeall (fd, &dataset->resp, total);
 	}
 
 
-- 
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