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Add new iso support

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This commit is contained in:
longpanda
2020-07-18 22:06:59 +08:00
parent 88dcceeabc
commit 3c46432d6f
19 changed files with 558 additions and 7 deletions
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12
GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy.c
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@@ -1459,6 +1459,7 @@ grub_uint32_t ventoy_get_iso_boot_catlog(grub_file_t file)
int ventoy_has_efi_eltorito(grub_file_t file, grub_uint32_t sector)
{
int i;
int x86count = 0;
grub_uint8_t buf[512];
grub_file_seek(file, sector * 2048);
@@ -1470,6 +1471,11 @@ int ventoy_has_efi_eltorito(grub_file_t file, grub_uint32_t sector)
return 1;
}
if (buf[0] == 0x01 && buf[1] == 0x00)
{
x86count++;
}
for (i = 64; i < (int)sizeof(buf); i += 32)
{
if ((buf[i] == 0x90 || buf[i] == 0x91) && buf[i + 1] == 0xEF)
@@ -1477,6 +1483,12 @@ int ventoy_has_efi_eltorito(grub_file_t file, grub_uint32_t sector)
debug("%s efi eltorito offset %d 0x%02x\n", file->name, i, buf[i]);
return 1;
}
if (buf[i] == 0x91 && buf[i + 1] == 0x00 && x86count == 1)
{
debug("0x9100 assume %s efi eltorito offset %d 0x%02x\n", file->name, i, buf[i]);
return 1;
}
}
debug("%s does not contain efi eltorito\n", file->name);