ubifs: Add generic fs support

Add generic fs support, so that commands like ls, load and test -e can be
used on ubifs.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

disk/part.c

@@ -10,6 +10,7 @@
 #include <ide.h>
 #include <malloc.h>
 #include <part.h>
+#include <ubifs_uboot.h>
 
 #undef	PART_DEBUG
 
@@ -511,6 +512,10 @@ int get_device_and_partition(const char *ifname, const char *dev_part_str,
 	int part;
 	disk_partition_t tmpinfo;
 
+#if defined CONFIG_SANDBOX && defined CONFIG_CMD_UBIFS
+#error Only one of CONFIG_SANDBOX and CONFIG_CMD_UBIFS may be selected
+#endif
+
 #ifdef CONFIG_SANDBOX
 	/*
 	 * Special-case a pseudo block device "hostfs", to allow access to the
@@ -532,6 +537,28 @@ int get_device_and_partition(const char *ifname, const char *dev_part_str,
 	}
 #endif
 
+#ifdef CONFIG_CMD_UBIFS
+	/*
+	 * Special-case ubi, ubi goes through a mtd, rathen then through
+	 * a regular block device.
+	 */
+	if (0 == strcmp(ifname, "ubi")) {
+		if (!ubifs_is_mounted()) {
+			printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
+			return -1;
+		}
+
+		*dev_desc = NULL;
+		memset(info, 0, sizeof(*info));
+		strcpy((char *)info->type, BOOT_PART_TYPE);
+		strcpy((char *)info->name, "UBI");
+#ifdef CONFIG_PARTITION_UUIDS
+		info->uuid[0] = 0;
+#endif
+		return 0;
+	}
+#endif
+
 	/* If no dev_part_str, use bootdevice environment variable */
 	if (!dev_part_str || !strlen(dev_part_str) ||
 	    !strcmp(dev_part_str, "-"))

fs/fs.c

@@ -23,6 +23,7 @@
 #include <fat.h>
 #include <fs.h>
 #include <sandboxfs.h>
+#include <ubifs_uboot.h>
 #include <asm/io.h>
 #include <div64.h>
 #include <linux/math64.h>
@@ -157,6 +158,21 @@ static struct fstype_info fstypes[] = {
 		.uuid = fs_uuid_unsupported,
 	},
 #endif
+#ifdef CONFIG_CMD_UBIFS
+	{
+		.fstype = FS_TYPE_UBIFS,
+		.name = "ubifs",
+		.null_dev_desc_ok = true,
+		.probe = ubifs_set_blk_dev,
+		.close = ubifs_close,
+		.ls = ubifs_ls,
+		.exists = ubifs_exists,
+		.size = ubifs_size,
+		.read = ubifs_read,
+		.write = fs_write_unsupported,
+		.uuid = fs_uuid_unsupported,
+	},
+#endif
 	{
 		.fstype = FS_TYPE_ANY,
 		.name = "unsupported",

include/fs.h

@@ -22,6 +22,7 @@
 #define FS_TYPE_FAT	1
 #define FS_TYPE_EXT	2
 #define FS_TYPE_SANDBOX	3
+#define FS_TYPE_UBIFS	4
 
 /*
  * Tell the fs layer which block device an partition to use for future