mirror of
https://src.fedoraproject.org/rpms/grub2.git
synced 2024-12-01 08:49:52 +00:00
83 lines
2.6 KiB
Diff
83 lines
2.6 KiB
Diff
|
From: Valdimir Serbinenko <phcoder@gmail.com>
|
||
|
|
Subject: Fix MBR remapping workaround.
|
||
|
|
|
||
|
|
upstream rev 4405
|
||
|
|
|
||
|
|
--- a/grub-core/kern/emu/hostdisk.c 2012-05-27 11:19:09 +0000
|
||
|
|
+++ b/grub-core/kern/emu/hostdisk.c 2012-06-02 11:48:44 +0000
|
||
|
|
@@ -1067,27 +1067,18 @@
|
||
|
|
if (fd < 0)
|
||
|
|
return grub_errno;
|
||
|
|
|
||
|
|
+#ifdef __linux__
|
||
|
|
+ if (sector == 0)
|
||
|
|
+ /* Work around a bug in Linux ez remapping. Linux remaps all
|
||
|
|
+ sectors that are read together with the MBR in one read. It
|
||
|
|
+ should only remap the MBR, so we split the read in two
|
||
|
|
+ parts. -jochen */
|
||
|
|
+ max = 1;
|
||
|
|
+#endif /* __linux__ */
|
||
|
|
+
|
||
|
|
if (max > size)
|
||
|
|
max = size;
|
||
|
|
|
||
|
|
-#ifdef __linux__
|
||
|
|
- if (sector == 0 && max > 1)
|
||
|
|
- {
|
||
|
|
- /* Work around a bug in Linux ez remapping. Linux remaps all
|
||
|
|
- sectors that are read together with the MBR in one read. It
|
||
|
|
- should only remap the MBR, so we split the read in two
|
||
|
|
- parts. -jochen */
|
||
|
|
- if (grub_util_fd_read (fd, buf, (1 << disk->log_sector_size))
|
||
|
|
- != (1 << disk->log_sector_size))
|
||
|
|
- return grub_error (GRUB_ERR_READ_ERROR, N_("cannot read `%s': %s"),
|
||
|
|
- map[disk->id].device, strerror (errno));
|
||
|
|
-
|
||
|
|
- buf += (1 << disk->log_sector_size);
|
||
|
|
- size--;
|
||
|
|
- max--;
|
||
|
|
- }
|
||
|
|
-#endif /* __linux__ */
|
||
|
|
-
|
||
|
|
if (grub_util_fd_read (fd, buf, max << disk->log_sector_size)
|
||
|
|
!= (ssize_t) (max << disk->log_sector_size))
|
||
|
|
return grub_error (GRUB_ERR_READ_ERROR, N_("cannot read `%s': %s"),
|
||
|
|
@@ -1111,28 +1102,18 @@
|
||
|
|
if (fd < 0)
|
||
|
|
return grub_errno;
|
||
|
|
|
||
|
|
+#ifdef __linux__
|
||
|
|
+ if (sector == 0)
|
||
|
|
+ /* Work around a bug in Linux ez remapping. Linux remaps all
|
||
|
|
+ sectors that are write together with the MBR in one write. It
|
||
|
|
+ should only remap the MBR, so we split the write in two
|
||
|
|
+ parts. -jochen */
|
||
|
|
+ max = 1;
|
||
|
|
+#endif /* __linux__ */
|
||
|
|
+
|
||
|
|
if (max > size)
|
||
|
|
max = size;
|
||
|
|
|
||
|
|
-#ifdef __linux__
|
||
|
|
- if (sector == 0 && max > 1)
|
||
|
|
- {
|
||
|
|
- /* Work around a bug in Linux ez remapping. Linux remaps all
|
||
|
|
- sectors that are write together with the MBR in one write. It
|
||
|
|
- should only remap the MBR, so we split the write in two
|
||
|
|
- parts. -jochen */
|
||
|
|
- if (grub_util_fd_write (fd, buf, (1 << disk->log_sector_size))
|
||
|
|
- != (1 << disk->log_sector_size))
|
||
|
|
- return grub_error (GRUB_ERR_WRITE_ERROR,
|
||
|
|
- N_("cannot write to `%s': %s"),
|
||
|
|
- map[disk->id].device, strerror (errno));
|
||
|
|
-
|
||
|
|
- buf += (1 << disk->log_sector_size);
|
||
|
|
- size--;
|
||
|
|
- max--;
|
||
|
|
- }
|
||
|
|
-#endif /* __linux__ */
|
||
|
|
-
|
||
|
|
if (grub_util_fd_write (fd, buf, max << disk->log_sector_size)
|
||
|
|
!= (ssize_t) (max << disk->log_sector_size))
|
||
|
|
return grub_error (GRUB_ERR_WRITE_ERROR, N_("cannot write to `%s': %s"),
|