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Recognise GRUB2 core.img (#766989)

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Recognise GRUB2 core.img boot code written to a partition without a file
system.  Such setups are possible/likely with GPT partitioned disks as
there is a specific partition type reserved for it [1][2]:
    21686148-6449-6E6F-744E-656564454649  (BIOS Boot partition)

[1] GUID Partition Table, Partition types
    https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs

[2] BIOS boot partition
    https://en.wikipedia.org/wiki/BIOS_boot_partition

Bug 766989 - zfsonline support - need file system name support for ZFS
             type codes
This commit is contained in:
Mike Fleetwood 2016-06-03 20:34:09 +01:00 committed by Curtis Gedak
parent 74e0aad7a4
commit 8ac3a0e4ad
3 changed files with 29 additions and 18 deletions
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13
include/Utils.h
View file

@ -90,14 +90,15 @@ enum FILESYSTEM
// Recognised signatures but otherwise unsupported file system types
FS_BITLOCKER = 25,
FS_LINUX_SWRAID = 26,
FS_LINUX_SWSUSPEND = 27,
FS_REFS = 28,
FS_ZFS = 29,
FS_GRUB2_CORE_IMG = 26,
FS_LINUX_SWRAID = 27,
FS_LINUX_SWSUSPEND = 28,
FS_REFS = 29,
FS_ZFS = 30,
// Partition space usage colours
FS_USED = 30,
FS_UNUSED = 31
FS_USED = 31,
FS_UNUSED = 32
} ;
enum SIZE_UNIT

32
src/GParted_Core.cc
View file

@ -1548,19 +1548,27 @@ FILESYSTEM GParted_Core::detect_filesystem_internal( PedDevice * lp_device, PedP
const char * sig2;
FILESYSTEM fstype;
} signatures[] = {
//offset1, sig1 , offset2, sig2 , fstype
{ 65536LL, "ReIsEr4" , 0LL, NULL , FS_REISER4 },
{ 512LL, "LABELONE" , 536LL, "LVM2", FS_LVM2_PV },
{ 0LL, "LUKS\xBA\xBE", 0LL, NULL , FS_LUKS },
{ 65600LL, "_BHRfS_M" , 0LL, NULL , FS_BTRFS },
{ 3LL, "-FVE-FS-" , 0LL, NULL , FS_BITLOCKER },
{ 1030LL, "\x34\x34" , 0LL, NULL , FS_NILFS2 }
//offset1, sig1 , offset2, sig2 , fstype
{ 65536LL, "ReIsEr4" , 0LL, NULL , FS_REISER4 },
{ 512LL, "LABELONE" , 536LL, "LVM2", FS_LVM2_PV },
{ 0LL, "LUKS\xBA\xBE" , 0LL, NULL , FS_LUKS },
{ 65600LL, "_BHRfS_M" , 0LL, NULL , FS_BTRFS },
{ 3LL, "-FVE-FS-" , 0LL, NULL , FS_BITLOCKER },
{ 1030LL, "\x34\x34" , 0LL, NULL , FS_NILFS2 },
{ 0LL, "\x52\x56\xBE\x1B", 0LL, NULL , FS_GRUB2_CORE_IMG },
{ 0LL, "\x52\x56\xBE\x6F", 0LL, NULL , FS_GRUB2_CORE_IMG },
{ 0LL, "\x52\xE8\x28\x01", 0LL, NULL , FS_GRUB2_CORE_IMG },
{ 0LL, "\x52\xBF\xF4\x81", 0LL, NULL , FS_GRUB2_CORE_IMG }
};
// Reference:
// Detecting BitLocker
// http://blogs.msdn.com/b/si_team/archive/2006/10/26/detecting-bitlocker.aspx
// Consider validation of BIOS Parameter Block fields as unnecessary for
// simple recognition only of BitLocker.
// For simple BitLocker recognition consider validation of BIOS Parameter block
// fields unnecessary.
// * Detecting BitLocker
// http://blogs.msdn.com/b/si_team/archive/2006/10/26/detecting-bitlocker.aspx
//
// Recognise GRUB2 core.img just by any of the possible first 4 bytes of x86 CPU
// instructions it starts with.
// * bootinfoscript v0.74 line 1963 [GRUB2 core.img possible staring 4 bytes]
// https://github.com/arvidjaar/bootinfoscript/blob/b1f711e39d7aa4021f4ad3d31468a8b1e1b3fda7/bootinfoscript#L1963
for ( unsigned int i = 0 ; i < sizeof( signatures ) / sizeof( signatures[0] ) ; i ++ )
{

2
src/Utils.cc
View file

@ -115,6 +115,7 @@ Glib::ustring Utils::get_color( FILESYSTEM filesystem )
case FS_UNUSED : return "#FFFFFF" ; //white
case FS_LVM2_PV : return "#B39169" ; //face skin dark
case FS_BITLOCKER : return "#494066" ; //purple shadow
case FS_GRUB2_CORE_IMG : return "#666666" ; //~ dark gray
case FS_LUKS : return "#625B81" ; //purple dark
case FS_LINUX_SWRAID : return "#5A4733" ; // ~ dark brown
case FS_LINUX_SWSUSPEND : return "#884631" ; //red dark
@ -291,6 +292,7 @@ Glib::ustring Utils::get_filesystem_string( FILESYSTEM filesystem )
case FS_UNUSED : return _("unused") ;
case FS_LVM2_PV : return "lvm2 pv" ;
case FS_BITLOCKER : return "bitlocker" ;
case FS_GRUB2_CORE_IMG : return "grub2 core.img";
case FS_LUKS : return "luks";
case FS_LINUX_SWRAID : return "linux-raid" ;
case FS_LINUX_SWSUSPEND : return "linux-suspend" ;