svn_rev_347

include/envfs.h

@@ -0,0 +1,48 @@
+#ifndef _ENVFS_H
+#define _ENVFS_H
+
+#define ENVFS_MAGIC		0x798fba79	/* some random number */
+#define ENVFS_INODE_MAGIC	0x67a8c78d
+#define ENVFS_END_MAGIC		0x6a87d6cd
+#define ENVFS_SIGNATURE	"U-Boot envfs"
+
+struct envfs_inode {
+	u32 magic;	/* 0x67a8c78d */
+	u32 crc;	/* crc for this inode and corresponding data */
+	u32 size;	/* data size in bytes  */
+	char name[32];
+	char data[0];
+};
+
+/*
+ * Superblock information at the beginning of the FS.
+ */
+struct envfs_super {
+	u32 magic;			/* 0x798fba79 - random number */
+	u32 priority;
+	u32 flags;			/* feature flags */
+	u32 future;			/* reserved for future use */
+};
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define ENVFS_16(x)	(x)
+#define ENVFS_24(x)	(x)
+#define ENVFS_32(x)	(x)
+#define ENVFS_GET_NAMELEN(x)	((x)->namelen)
+#define ENVFS_GET_OFFSET(x)	((x)->offset)
+#define ENVFS_SET_OFFSET(x,y)	((x)->offset = (y))
+#define ENVFS_SET_NAMELEN(x,y) ((x)->namelen = (y))
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#ifdef __KERNEL__
+#define ENVFS_16(x)	swab16(x)
+#define ENVFS_24(x)	((swab32(x)) >> 8)
+#define ENVFS_32(x)	swab32(x)
+#else /* not __KERNEL__ */
+#define ENVFS_16(x)	bswap_16(x)
+#define ENVFS_24(x)	((bswap_32(x)) >> 8)
+#define ENVFS_32(x)	bswap_32(x)
+#endif /* not __KERNEL__ */
+#endif
+
+#endif /* _ENVFS_H */
+