File grub2-efi-chainloader-root.patch of Package grub2.14515
From: Raymund Will <rw@suse.com>
Subject: Use device part of chainloader target, if present.
References: bnc#871857, bnc#880177
Patch-Mainline: no
Otherwise chainloading is restricted to '$root', which might not even
be readable by EFI!
v1. use grub_file_get_device_name() to get device name
Signed-off-by: Michael Chang <mchang@suse.com>
---
grub-core/loader/efi/chainloader.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
Index: grub-2.02~beta2/grub-core/loader/efi/chainloader.c
===================================================================
--- grub-2.02~beta2.orig/grub-core/loader/efi/chainloader.c
+++ grub-2.02~beta2/grub-core/loader/efi/chainloader.c
@@ -706,12 +706,16 @@ grub_cmd_chainloader (grub_command_t cmd
*(--p16) = 0;
}
+ grub_dprintf ("chain", "cmd='%s'\n", filename);
file = grub_file_open (filename);
if (! file)
goto fail;
- /* Get the root device's device path. */
- dev = grub_device_open (0);
+ /* Get the device path from filename. */
+ char *devname = grub_file_get_device_name (filename);
+ dev = grub_device_open (devname);
+ if (devname)
+ grub_free (devname);
if (! dev)
goto fail;