[PATCH 2/5] filetype: add GPT support

[Jean-Christophe PLAGNIOL-VILLARD]

GPT need to be check before MBR

Cc: Rob Herring <rob.herring at calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 common/filetype.c  |    4 ++++
 include/filetype.h |    1 +
 2 files changed, 5 insertions(+)

diff --git a/common/filetype.c b/common/filetype.c
index 22fc621..6563ecc 100644
--- a/common/filetype.c
+++ b/common/filetype.c
@@ -48,6 +48,7 @@ static const struct filetype_str filetype_str[] = {
 	[filetype_bmp] = { "BMP image", "bmp" },
 	[filetype_png] = { "PNG image", "png" },
 	[filetype_ext] = { "ext filesystem", "ext" },
+	[filetype_gpt] = { "GUID Partition Table", "gpt" },
 };
 
 const char *file_type_to_string(enum filetype f)
@@ -159,6 +160,9 @@ enum filetype file_detect_type(const void *_buf, size_t bufsize)
 	if (bufsize < 512)
 		return filetype_unknown;
 
+	if (bufsize >= 520 && strncmp(&buf8[512], "EFI PART", 8) == 0)
+		return filetype_gpt;
+
 	type = is_fat_or_mbr(buf8, NULL);
 	if (type != filetype_unknown)
 		return type;
diff --git a/include/filetype.h b/include/filetype.h
index 4d43757..78ca5d2 100644
--- a/include/filetype.h
+++ b/include/filetype.h
@@ -23,6 +23,7 @@ enum filetype {
 	filetype_bmp,
 	filetype_png,
 	filetype_ext,
+	filetype_gpt,
 	filetype_max,
 };
 
-- 
1.7.10.4