dcavalca / rpms / grub2

Forked from rpms/grub2 3 years ago
Clone

Blame SOURCES/0001-efidisk-move-device-path-helpers-in-core-for-efinet.patch

ecb9bb
From 559b04c2e29643b73f238cf95add8cef9a192a00 Mon Sep 17 00:00:00 2001
ecb9bb
From: Andrei Borzenkov <arvidjaar@gmail.com>
ecb9bb
Date: Thu, 7 May 2015 20:37:16 +0300
ecb9bb
Subject: [PATCH 01/17] efidisk: move device path helpers in core for efinet
ecb9bb
ecb9bb
---
ecb9bb
 grub-core/disk/efi/efidisk.c | 61 ++++++++------------------------------------
ecb9bb
 grub-core/kern/efi/efi.c     | 41 +++++++++++++++++++++++++++++
ecb9bb
 include/grub/efi/efi.h       |  4 +++
ecb9bb
 3 files changed, 55 insertions(+), 51 deletions(-)
ecb9bb
ecb9bb
diff --git a/grub-core/disk/efi/efidisk.c b/grub-core/disk/efi/efidisk.c
ecb9bb
index 3b12c34..845c66f 100644
ecb9bb
--- a/grub-core/disk/efi/efidisk.c
ecb9bb
+++ b/grub-core/disk/efi/efidisk.c
ecb9bb
@@ -43,47 +43,6 @@ static struct grub_efidisk_data *fd_devices;
ecb9bb
 static struct grub_efidisk_data *hd_devices;
ecb9bb
 static struct grub_efidisk_data *cd_devices;
ecb9bb
 
ecb9bb
-/* Duplicate a device path.  */
ecb9bb
-static grub_efi_device_path_t *
ecb9bb
-duplicate_device_path (const grub_efi_device_path_t *dp)
ecb9bb
-{
ecb9bb
-  grub_efi_device_path_t *p;
ecb9bb
-  grub_size_t total_size = 0;
ecb9bb
-
ecb9bb
-  for (p = (grub_efi_device_path_t *) dp;
ecb9bb
-       ;
ecb9bb
-       p = GRUB_EFI_NEXT_DEVICE_PATH (p))
ecb9bb
-    {
ecb9bb
-      total_size += GRUB_EFI_DEVICE_PATH_LENGTH (p);
ecb9bb
-      if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p))
ecb9bb
-	break;
ecb9bb
-    }
ecb9bb
-
ecb9bb
-  p = grub_malloc (total_size);
ecb9bb
-  if (! p)
ecb9bb
-    return 0;
ecb9bb
-
ecb9bb
-  grub_memcpy (p, dp, total_size);
ecb9bb
-  return p;
ecb9bb
-}
ecb9bb
-
ecb9bb
-/* Return the device path node right before the end node.  */
ecb9bb
-static grub_efi_device_path_t *
ecb9bb
-find_last_device_path (const grub_efi_device_path_t *dp)
ecb9bb
-{
ecb9bb
-  grub_efi_device_path_t *next, *p;
ecb9bb
-
ecb9bb
-  if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp))
ecb9bb
-    return 0;
ecb9bb
-
ecb9bb
-  for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p);
ecb9bb
-       ! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next);
ecb9bb
-       p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next))
ecb9bb
-    ;
ecb9bb
-
ecb9bb
-  return p;
ecb9bb
-}
ecb9bb
-
ecb9bb
 static struct grub_efidisk_data *
ecb9bb
 make_devices (void)
ecb9bb
 {
ecb9bb
@@ -110,7 +69,7 @@ make_devices (void)
ecb9bb
       if (! dp)
ecb9bb
 	continue;
ecb9bb
 
ecb9bb
-      ldp = find_last_device_path (dp);
ecb9bb
+      ldp = grub_efi_find_last_device_path (dp);
ecb9bb
       if (! ldp)
ecb9bb
 	/* This is empty. Why?  */
ecb9bb
 	continue;
ecb9bb
@@ -150,11 +109,11 @@ find_parent_device (struct grub_efidisk_data *devices,
ecb9bb
   grub_efi_device_path_t *dp, *ldp;
ecb9bb
   struct grub_efidisk_data *parent;
ecb9bb
 
ecb9bb
-  dp = duplicate_device_path (d->device_path);
ecb9bb
+  dp = grub_efi_duplicate_device_path (d->device_path);
ecb9bb
   if (! dp)
ecb9bb
     return 0;
ecb9bb
 
ecb9bb
-  ldp = find_last_device_path (dp);
ecb9bb
+  ldp = grub_efi_find_last_device_path (dp);
ecb9bb
   ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE;
ecb9bb
   ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
ecb9bb
   ldp->length = sizeof (*ldp);
ecb9bb
@@ -180,11 +139,11 @@ is_child (struct grub_efidisk_data *child,
ecb9bb
   grub_efi_device_path_t *dp, *ldp;
ecb9bb
   int ret;
ecb9bb
 
ecb9bb
-  dp = duplicate_device_path (child->device_path);
ecb9bb
+  dp = grub_efi_duplicate_device_path (child->device_path);
ecb9bb
   if (! dp)
ecb9bb
     return 0;
ecb9bb
 
ecb9bb
-  ldp = find_last_device_path (dp);
ecb9bb
+  ldp = grub_efi_find_last_device_path (dp);
ecb9bb
   ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE;
ecb9bb
   ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
ecb9bb
   ldp->length = sizeof (*ldp);
ecb9bb
@@ -207,8 +166,8 @@ add_device (struct grub_efidisk_data **devices, struct grub_efidisk_data *d)
ecb9bb
     {
ecb9bb
       int ret;
ecb9bb
 
ecb9bb
-      ret = grub_efi_compare_device_paths (find_last_device_path ((*p)->device_path),
ecb9bb
-					   find_last_device_path (d->device_path));
ecb9bb
+      ret = grub_efi_compare_device_paths (grub_efi_find_last_device_path ((*p)->device_path),
ecb9bb
+					   grub_efi_find_last_device_path (d->device_path));
ecb9bb
       if (ret == 0)
ecb9bb
 	ret = grub_efi_compare_device_paths ((*p)->device_path,
ecb9bb
 					     d->device_path);
ecb9bb
@@ -795,7 +754,7 @@ grub_efidisk_get_device_name (grub_efi_handle_t *handle)
ecb9bb
   if (! dp)
ecb9bb
     return 0;
ecb9bb
 
ecb9bb
-  ldp = find_last_device_path (dp);
ecb9bb
+  ldp = grub_efi_find_last_device_path (dp);
ecb9bb
   if (! ldp)
ecb9bb
     return 0;
ecb9bb
 
ecb9bb
@@ -811,14 +770,14 @@ grub_efidisk_get_device_name (grub_efi_handle_t *handle)
ecb9bb
 
ecb9bb
       /* It is necessary to duplicate the device path so that GRUB
ecb9bb
 	 can overwrite it.  */
ecb9bb
-      dup_dp = duplicate_device_path (dp);
ecb9bb
+      dup_dp = grub_efi_duplicate_device_path (dp);
ecb9bb
       if (! dup_dp)
ecb9bb
 	return 0;
ecb9bb
 
ecb9bb
       while (1)
ecb9bb
 	{
ecb9bb
 	  grub_efi_device_path_t *dup_ldp;
ecb9bb
-	  dup_ldp = find_last_device_path (dup_dp);
ecb9bb
+	  dup_ldp = grub_efi_find_last_device_path (dup_dp);
ecb9bb
 	  if (!(GRUB_EFI_DEVICE_PATH_TYPE (dup_ldp) == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE
ecb9bb
 		&& (GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE
ecb9bb
 		    || GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE)))
ecb9bb
diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c
ecb9bb
index d99a6fb..c80d85b 100644
ecb9bb
--- a/grub-core/kern/efi/efi.c
ecb9bb
+++ b/grub-core/kern/efi/efi.c
ecb9bb
@@ -423,6 +423,47 @@ grub_efi_get_device_path (grub_efi_handle_t handle)
ecb9bb
 				 GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL);
ecb9bb
 }
ecb9bb
 
ecb9bb
+/* Return the device path node right before the end node.  */
ecb9bb
+grub_efi_device_path_t *
ecb9bb
+grub_efi_find_last_device_path (const grub_efi_device_path_t *dp)
ecb9bb
+{
ecb9bb
+  grub_efi_device_path_t *next, *p;
ecb9bb
+
ecb9bb
+  if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp))
ecb9bb
+    return 0;
ecb9bb
+
ecb9bb
+  for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p);
ecb9bb
+       ! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next);
ecb9bb
+       p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next))
ecb9bb
+    ;
ecb9bb
+
ecb9bb
+  return p;
ecb9bb
+}
ecb9bb
+
ecb9bb
+/* Duplicate a device path.  */
ecb9bb
+grub_efi_device_path_t *
ecb9bb
+grub_efi_duplicate_device_path (const grub_efi_device_path_t *dp)
ecb9bb
+{
ecb9bb
+  grub_efi_device_path_t *p;
ecb9bb
+  grub_size_t total_size = 0;
ecb9bb
+
ecb9bb
+  for (p = (grub_efi_device_path_t *) dp;
ecb9bb
+       ;
ecb9bb
+       p = GRUB_EFI_NEXT_DEVICE_PATH (p))
ecb9bb
+    {
ecb9bb
+      total_size += GRUB_EFI_DEVICE_PATH_LENGTH (p);
ecb9bb
+      if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p))
ecb9bb
+	break;
ecb9bb
+    }
ecb9bb
+
ecb9bb
+  p = grub_malloc (total_size);
ecb9bb
+  if (! p)
ecb9bb
+    return 0;
ecb9bb
+
ecb9bb
+  grub_memcpy (p, dp, total_size);
ecb9bb
+  return p;
ecb9bb
+}
ecb9bb
+
ecb9bb
 static void
ecb9bb
 dump_vendor_path (const char *type, grub_efi_vendor_device_path_t *vendor)
ecb9bb
 {
ecb9bb
diff --git a/include/grub/efi/efi.h b/include/grub/efi/efi.h
ecb9bb
index a000c38..2245632 100644
ecb9bb
--- a/include/grub/efi/efi.h
ecb9bb
+++ b/include/grub/efi/efi.h
ecb9bb
@@ -56,6 +56,10 @@ void EXPORT_FUNC(grub_efi_print_device_path) (grub_efi_device_path_t *dp);
ecb9bb
 char *EXPORT_FUNC(grub_efi_get_filename) (grub_efi_device_path_t *dp);
ecb9bb
 grub_efi_device_path_t *
ecb9bb
 EXPORT_FUNC(grub_efi_get_device_path) (grub_efi_handle_t handle);
ecb9bb
+grub_efi_device_path_t *
ecb9bb
+EXPORT_FUNC(grub_efi_find_last_device_path) (const grub_efi_device_path_t *dp);
ecb9bb
+grub_efi_device_path_t *
ecb9bb
+EXPORT_FUNC(grub_efi_duplicate_device_path) (const grub_efi_device_path_t *dp);
ecb9bb
 grub_err_t EXPORT_FUNC (grub_efi_finish_boot_services) (grub_efi_uintn_t *outbuf_size, void *outbuf,
ecb9bb
 							grub_efi_uintn_t *map_key,
ecb9bb
 							grub_efi_uintn_t *efi_desc_size,
ecb9bb
-- 
ecb9bb
2.4.3
ecb9bb