grub2/0002-Add-grub_disk_write_tail-helper-function.patch
Michael Chang 543f21c3be - Revert the patches related to BLS support in grub2-mkconfig, as they are not
relevant to the current BLS integration and cause issues in older KIWI
  versions, which actively force it to be enabled by default (bsc#1233196)
  * 0002-Add-BLS-support-to-grub-mkconfig.patch
  * 0003-Add-grub2-switch-to-blscfg.patch
  * 0007-grub-switch-to-blscfg-adapt-to-openSUSE.patch
  * 0008-blscfg-reading-bls-fragments-if-boot-present.patch
  * 0009-10_linux-Some-refinement-for-BLS.patch
  * 0001-10_linux-Do-not-enable-BLSCFG-on-s390-emu.patch

OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=523
2024-11-13 01:57:36 +00:00

54 lines
1.5 KiB
Diff

From c0d00403a297d6023eab6189ba87dc8a3f6d1e85 Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Mon, 7 Feb 2022 20:44:40 +0800
Subject: [PATCH 2/5] Add grub_disk_write_tail helper function
This helps in writing data to partition where the end of buffer is
aligned to end of partition.
Signed-off-by: Michael Chang <mchang@suse.com>
---
grub-core/lib/disk.c | 18 ++++++++++++++++++
include/grub/disk.h | 3 +++
2 files changed, 21 insertions(+)
--- a/grub-core/lib/disk.c
+++ b/grub-core/lib/disk.c
@@ -52,6 +52,24 @@
}
grub_err_t
+grub_disk_write_tail (grub_disk_t disk, grub_size_t size, const void *buf)
+{
+ grub_partition_t part;
+ grub_disk_addr_t sector;
+ grub_off_t offset;
+
+ if (!disk->partition)
+ return GRUB_ERR_NONE;
+
+ part = disk->partition;
+ sector = part->len;
+ sector -= (size + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS;
+ offset = size & (GRUB_DISK_SECTOR_SIZE - 1);
+
+ return grub_disk_write (disk, sector, offset, size, buf);
+}
+
+grub_err_t
grub_disk_write (grub_disk_t disk, grub_disk_addr_t sector,
grub_off_t offset, grub_size_t size, const void *buf)
{
--- a/include/grub/disk.h
+++ b/include/grub/disk.h
@@ -252,6 +252,9 @@
grub_off_t offset,
grub_size_t size,
void *buf);
+grub_err_t grub_disk_write_tail (grub_disk_t disk,
+ grub_size_t size,
+ const void *buf);
grub_err_t grub_disk_write (grub_disk_t disk,
grub_disk_addr_t sector,
grub_off_t offset,