Hi,
As FAT is basically a case insensitive file system, we should ignore
case when opening files.
For example, normally efi image would be placed in EFI/grub directory.
After startup, the prefix would be set to something like
(hd0,1)/EFI/grub/. But inside grub, it convert pathname to lowercase,
EFI would become efi, so grub can't open it anymore. With this patch,
fat ignore case, so we can access files using /efi/grub as well as
/EFI/grub.
--
Bean
diff --git a/fs/fat.c b/fs/fat.c
index 63979b4..fb89e3a 100644
--- a/fs/fat.c
+++ b/fs/fat.c
@@ -35,6 +35,8 @@
#define GRUB_FAT_ATTR_DIRECTORY 0x10
#define GRUB_FAT_ATTR_ARCHIVE 0x20
+#define GRUB_FAT_MAXPATH 260
+
#define GRUB_FAT_ATTR_LONG_NAME (GRUB_FAT_ATTR_READ_ONLY \
| GRUB_FAT_ATTR_HIDDEN \
| GRUB_FAT_ATTR_SYSTEM \
@@ -629,7 +631,7 @@ grub_fat_find_dir (grub_disk_t disk, struct grub_fat_data *data,
if (hook (filename, dir.attr & GRUB_FAT_ATTR_DIRECTORY))
break;
}
- else if (grub_strcmp (dirname, filename) == 0)
+ else if (grub_strncasecmp (dirname, filename, GRUB_FAT_MAXPATH) == 0)
{
if (call_hook)
hook (filename, dir.attr & GRUB_FAT_ATTR_DIRECTORY);
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