Part_msdos size is critical as it's in critical supported configuration
part_msdos+biosdisk+any FS. Please put it in a non-critical module
Le mar. 22 août 2023, 23:41, Vitaly Kuzmichev <vitaly.kuzmic...@rtsoft.de>
a écrit :
> This patch adds a function to provide partition PARTUUID on MBR
> formatted disks by extracting 32-bit disk signature code from MBR
> at offset 0x01B8 and adding partition number to it, similarly to
> 'blkid' output.
>
> Signed-off-by: Vitaly Kuzmichev <vitaly.kuzmic...@rtsoft.de>
> ---
> grub-core/partmap/msdos.c | 32 ++++++++++++++++++++++++++++++++
> include/grub/msdos_partition.h | 3 +++
> 2 files changed, 35 insertions(+)
>
> diff --git a/grub-core/partmap/msdos.c b/grub-core/partmap/msdos.c
> index c85bb74be..4ad9ea74f 100644
> --- a/grub-core/partmap/msdos.c
> +++ b/grub-core/partmap/msdos.c
> @@ -24,12 +24,44 @@
> #include <grub/misc.h>
> #include <grub/dl.h>
> #include <grub/i18n.h>
> +#include <grub/i386/pc/boot.h>
>
> GRUB_MOD_LICENSE ("GPLv3+");
>
> static struct grub_partition_map grub_msdos_partition_map;
>
>
> +char *
> +grub_mbr_partition_get_uuid (grub_device_t dev)
> +{
> + grub_disk_t disk;
> + grub_partition_t pt;
> + grub_uint32_t disk_uuid;
> + char *part_uuid = NULL;
> +
> + if (dev && dev->disk && dev->disk->partition &&
> dev->disk->partition->partmap)
> + {
> + pt = dev->disk->partition;
> + if (grub_strcmp (pt->partmap->name, "msdos") == 0)
> + {
> + disk = grub_disk_open (dev->disk->name);
> + if (disk && grub_disk_read (disk, 0,
> + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC,
> + sizeof (disk_uuid), &disk_uuid) == 0)
> + part_uuid = grub_xasprintf ("%08x-%02x",
> + grub_le_to_cpu32 (disk_uuid),
> + pt->number + 1);
> + if (!part_uuid)
> + grub_error_push ();
> + grub_disk_close (disk);
> + if (!part_uuid)
> + grub_error_pop ();
> + }
> + }
> +
> + return part_uuid;
> +}
> +
> #ifdef GRUB_UTIL
> #include <grub/emu/misc.h>
>
> diff --git a/include/grub/msdos_partition.h
> b/include/grub/msdos_partition.h
> index fdc2904d3..ff7600915 100644
> --- a/include/grub/msdos_partition.h
> +++ b/include/grub/msdos_partition.h
> @@ -124,4 +124,7 @@ grub_partition_msdos_iterate (grub_disk_t disk,
> grub_partition_iterate_hook_t hook,
> void *hook_data);
>
> +char *
> +grub_mbr_partition_get_uuid (grub_device_t dev);
> +
> #endif /* ! GRUB_PC_PARTITION_HEADER */
> --
> 2.34.1
>
>
> _______________________________________________
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> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
>
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