78 lines
2.4 KiB
Diff
78 lines
2.4 KiB
Diff
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From b57af595c94db6d7babb7623c1530ee4f5b956f0 Mon Sep 17 00:00:00 2001
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From: Michal Suchanek <msuchanek@suse.de>
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Date: Tue, 31 Oct 2017 14:28:54 +0100
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Subject: [PATCH] grub-install: remove useless check PReP partition is empty.
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References: bsc#1065738
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The grub-install rewrite in commit cd46aa6cefab checks that the PPeP
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partition does not install an ELF binary before writing grub to it. This
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causes regression in installer scripts that expect to be able to
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reinstall bootloaders without first witping the partition by hand.
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Fixes: cd46aa6cefab ("Rewrite grub-install, grub-mkrescue,
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grub-mkstandalone and grub-mknetdir ")
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---
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util/grub-install.c | 39 ++-------------------------------------
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1 file changed, 2 insertions(+), 37 deletions(-)
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--- a/util/grub-install.c
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+++ b/util/grub-install.c
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@@ -759,34 +759,6 @@
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return 0;
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}
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-static int
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-is_prep_empty (grub_device_t dev)
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-{
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- grub_disk_addr_t dsize, addr;
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- grub_uint32_t buffer[32768];
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-
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- dsize = grub_disk_native_sectors (dev->disk);
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- for (addr = 0; addr < dsize;
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- addr += sizeof (buffer) / GRUB_DISK_SECTOR_SIZE)
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- {
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- grub_size_t sz = sizeof (buffer);
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- grub_uint32_t *ptr;
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-
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- if (sizeof (buffer) / GRUB_DISK_SECTOR_SIZE > dsize - addr)
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- sz = (dsize - addr) * GRUB_DISK_SECTOR_SIZE;
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- grub_disk_read (dev->disk, addr, 0, sz, buffer);
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-
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- if (addr == 0 && grub_memcmp (buffer, ELFMAG, SELFMAG) == 0)
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- return 1;
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-
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- for (ptr = buffer; ptr < buffer + sz / sizeof (*buffer); ptr++)
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- if (*ptr)
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- return 0;
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- }
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-
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- return 1;
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-}
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-
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static void
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bless (grub_device_t dev, const char *path, int x86)
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{
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@@ -1980,18 +1952,9 @@
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{
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grub_util_error ("%s", _("the chosen partition is not a PReP partition"));
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}
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- if (is_prep_empty (ins_dev))
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- {
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- if (write_to_disk (ins_dev, imgfile))
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- grub_util_error ("%s", _("failed to copy Grub to the PReP partition"));
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- grub_set_install_backup_ponr ();
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- }
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- else
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- {
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- char *s = xasprintf ("dd if=/dev/zero of=%s", install_device);
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- grub_util_error (_("the PReP partition is not empty. If you are sure you want to use it, run dd to clear it: `%s'"),
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- s);
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- }
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+ if (write_to_disk (ins_dev, imgfile))
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+ grub_util_error ("%s", _("failed to copy Grub to the PReP partition"));
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+ grub_set_install_backup_ponr ();
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grub_device_close (ins_dev);
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if (update_nvram)
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grub_install_register_ieee1275 (1, grub_util_get_os_disk (install_device),
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