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uuid: add selection by string for known partition type GUID

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short strings can be used in type parameter of gpt command
to replace the guid string for the types known by u-boot

      partitions = name=boot,size=0x6bc00,type=data; \
                   name=root,size=0x7538ba00,type=linux;
      gpt write mmc 0 $partitions

and they are also used to display the type of partition
in "part list" command

  Partition Map for MMC device 0  --   Partition Type: EFI

  Part	Start LBA	End LBA		Name
	Attributes
	Type GUID
	Partition GUID
    1	0x00000022	0x0000037f	"boot"
	attrs:	0x0000000000000000
	type:	ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
	type:	data
	guid:	d117f98e-6f2c-d04b-a5b2-331a19f91cb2
    2	0x00000380	0x003a9fdc	"root"
	attrs:	0x0000000000000000
	type:	0fc63daf-8483-4772-8e79-3d69d8477de4
	type:	linux
	guid:	25718777-d0ad-7443-9e60-02cb591c9737

Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
This commit is contained in:
Patrick Delaunay
2015-10-27 11:00:28 +01:00
committed by Tom Rini
parent 7561b258a1
commit bcb41dcaef
4 changed files with 94 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

64
lib/uuid.c
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@ -80,10 +80,65 @@ int uuid_str_valid(const char *uuid)
return 1;
}
#ifdef CONFIG_PARTITION_TYPE_GUID
static const struct {
const char *string;
efi_guid_t guid;
} list_guid[] = {
{"system", PARTITION_SYSTEM_GUID},
{"mbr", LEGACY_MBR_PARTITION_GUID},
{"msft", PARTITION_MSFT_RESERVED_GUID},
{"data", PARTITION_BASIC_DATA_GUID},
{"linux", PARTITION_LINUX_FILE_SYSTEM_DATA_GUID},
{"raid", PARTITION_LINUX_RAID_GUID},
{"swap", PARTITION_LINUX_SWAP_GUID},
{"lvm", PARTITION_LINUX_LVM_GUID}
};
/*
* uuid_guid_get_bin() - this function get GUID bin for string
*
* @param guid_str - pointer to partition type string
* @param guid_bin - pointer to allocated array for big endian output [16B]
*/
int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin)
{
int i;
for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
if (!strcmp(list_guid[i].string, guid_str)) {
memcpy(guid_bin, &list_guid[i].guid, 16);
return 0;
}
}
return -ENODEV;
}
/*
* uuid_guid_get_str() - this function get string for GUID.
*
* @param guid_bin - pointer to string with partition type guid [16B]
* @param guid_str - pointer to allocated partition type string [7B]
*/
int uuid_guid_get_str(unsigned char *guid_bin, char *guid_str)
{
int i;
*guid_str = 0;
for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
strcpy(guid_str, list_guid[i].string);
return 0;
}
}
return -ENODEV;
}
#endif
/*
* uuid_str_to_bin() - convert string UUID or GUID to big endian binary data.
*
* @param uuid_str - pointer to UUID or GUID string [37B]
* @param uuid_str - pointer to UUID or GUID string [37B] or GUID shorcut
* @param uuid_bin - pointer to allocated array for big endian output [16B]
* @str_format - UUID string format: 0 - UUID; 1 - GUID
*/
@ -93,8 +148,13 @@ int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format)
uint32_t tmp32;
uint64_t tmp64;
if (!uuid_str_valid(uuid_str))
if (!uuid_str_valid(uuid_str)) {
#ifdef CONFIG_PARTITION_TYPE_GUID
if (!uuid_guid_get_bin(uuid_str, uuid_bin))
return 0;
#endif
return -EINVAL;
}
if (str_format == UUID_STR_FORMAT_STD) {
tmp32 = cpu_to_be32(simple_strtoul(uuid_str, NULL, 16));