From d5926d3848b1e9c6147f0bd908a35d20cdef50b5 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 10 Sep 2015 17:22:34 +0200
Subject: [PATCH] add exfat support

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 fs.c         | 15 +++++++++++++++
 include/fs.h |  3 ++-
 mount.c      |  5 +++++
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/fs.c b/fs.c
index 49ad1d5..fee6608 100644
--- a/fs.c
+++ b/fs.c
@@ -123,6 +123,20 @@ out:
 	return ret;
 }
 
+static int detect_exfat(int fd)
+{
+	int ret = NONE;
+	unsigned char *buffer = (unsigned char*)malloc(FAT_BUF_SIZE);
+	if(get_buffer(fd, buffer, 0, FAT_BUF_SIZE) != 0)
+		goto out;
+
+	if (!memcmp(buffer + 3, "EXFAT  ", 7))
+		ret = EXFAT;
+out:
+	free(buffer);
+	return ret;
+}
+
 #define HFSPLUS_VOL_JOURNALED	(1 << 13)
 #define HFSPLUS_BUF_SIZE			512
 static int detect_hfsplus(int fd)
@@ -179,6 +193,7 @@ out:
 
 dfunc funcs[] = {
 	detect_ext23,
+	detect_exfat,
 	detect_fat,
 	detect_ntfs,
 	detect_hfsplus,
diff --git a/include/fs.h b/include/fs.h
index be60f2e..1c66db3 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -7,6 +7,7 @@
 #define EFI			7
 #define NTFS		8
 #define EXTENDED	9
-#define EXT4		10
+#define EXFAT		10
+#define EXT4		11
 
 int detect_fs(char *device);
diff --git a/mount.c b/mount.c
index 0370eb9..8892040 100644
--- a/mount.c
+++ b/mount.c
@@ -227,6 +227,11 @@ int mount_new(char *path, char *dev)
 	pid = autofs_safe_fork();
 	if(!pid)
 	{
+		if(mount->fs == EXFAT)
+		{
+			log_printf("mount -t exfat -o rw,uid=1000,gid=1000 /dev/%s %s", mount->dev, tmp);
+			ret = system_printf("mount -t exfat -o rw,uid=1000,gid=1000 /dev/%s %s", mount->dev, tmp);
+		}
 		if(mount->fs == FAT)
 		{
 			log_printf("mount -t vfat -o rw,uid=1000,gid=1000 /dev/%s %s", mount->dev, tmp);
-- 
2.30.2