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