From 4d0a7b6087a228c60cd85d9360bb47f62773fefd Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Sun, 11 Jan 2009 11:56:35 +0100
Subject: [PATCH] Allow passing multiple image files to the initrd command

This patch allows you to pass multiple image files to the kernel by adding more
than one filename to the initrd parameter. i.e.:

initrd /initramfs-image1.gz /initramfs-image2.gz

Bug Report: https://bugzilla.redhat.com/show_bug.cgi?id=179127
---
 stage2/boot.c |   30 +++++++++++++++++++-----------
 1 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/stage2/boot.c b/stage2/boot.c
index ec25acf..eee8bb1 100644
--- a/stage2/boot.c
+++ b/stage2/boot.c
@@ -814,7 +814,8 @@ load_initrd (char *initrd)
 #endif
   return grub_load_initrd (initrd);
 #else
-  int len;
+  int len, next_addr;
+  char *singleimage, *pos;
   unsigned long moveto;
   unsigned long max_addr;
   struct linux_kernel_header *lh
@@ -823,16 +824,24 @@ load_initrd (char *initrd)
 #ifndef NO_DECOMPRESSION
   no_decompression = 1;
 #endif
-  
-  if (! grub_open (initrd))
-    goto fail;
+  len = 0;
+  next_addr = cur_addr;
 
-  len = grub_read ((char *) cur_addr, -1);
-  if (! len)
-    {
-      grub_close ();
-      goto fail;
-    }
+  /* loop over all initrd images and concatenate them in memory */
+  singleimage = strtok_r(initrd," \t",&pos);
+  while (singleimage) {
+    if (! grub_open (singleimage))
+      continue;
+
+    len += grub_read ((char *) next_addr, -1);
+    grub_close ();
+
+    next_addr = cur_addr + len;
+    singleimage = strtok_r(NULL," \t",&pos);
+  }
+
+  if (!len)
+    goto fail;
 
   if (linux_mem_size)
     moveto = linux_mem_size;
@@ -862,7 +871,6 @@ load_initrd (char *initrd)
   lh->ramdisk_image = RAW_ADDR (moveto);
   lh->ramdisk_size = len;
 
-  grub_close ();
 
  fail:
   
-- 
1.5.5.6