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29 lines
987 B
Diff
29 lines
987 B
Diff
From 8e4aea82c6aba6b8b5ca68d74abafa3fe9486c36 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Thu, 19 Apr 2012 14:17:38 -0400
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Subject: [PATCH] Open device O_WRONLY in grub_util_biosdisk_write.
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revision 4225 introduced an error wherein the device we intend
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to write to from e.g. grub2-bios-setup is opened read-only. The
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immediate following write(2) call then fails with -EBADF.
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---
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grub-core/kern/emu/hostdisk.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/grub-core/kern/emu/hostdisk.c b/grub-core/kern/emu/hostdisk.c
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index ea7eb3d..19748df 100644
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--- a/grub-core/kern/emu/hostdisk.c
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+++ b/grub-core/kern/emu/hostdisk.c
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@@ -1081,7 +1081,7 @@ grub_util_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
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{
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int fd;
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grub_disk_addr_t max = ~0ULL;
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- fd = open_device (disk, sector, O_RDONLY, &max);
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+ fd = open_device (disk, sector, O_WRONLY, &max);
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if (fd < 0)
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return grub_errno;
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--
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1.7.10
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