1 files changed, 63 insertions, 0 deletions
diff --git a/include/uapi/linux/efs_fs_sb.h b/include/uapi/linux/efs_fs_sb.h
new file mode 100644
index 000000000..6bad29a10
--- /dev/null
+++ b/include/uapi/linux/efs_fs_sb.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * efs_fs_sb.h
+ *
+ * Copyright (c) 1999 Al Smith
+ *
+ * Portions derived from IRIX header files (c) 1988 Silicon Graphics
+ */
+
+#ifndef __EFS_FS_SB_H__
+#define __EFS_FS_SB_H__
+
+#include <linux/types.h>
+#include <linux/magic.h>
+
+/* EFS superblock magic numbers */
+#define EFS_MAGIC	0x072959
+#define EFS_NEWMAGIC	0x07295a
+
+#define IS_EFS_MAGIC(x)	((x == EFS_MAGIC) || (x == EFS_NEWMAGIC))
+
+#define EFS_SUPER		1
+#define EFS_ROOTINODE		2
+
+/* efs superblock on disk */
+struct efs_super {
+	__be32		fs_size;        /* size of filesystem, in sectors */
+	__be32		fs_firstcg;     /* bb offset to first cg */
+	__be32		fs_cgfsize;     /* size of cylinder group in bb's */
+	__be16		fs_cgisize;     /* bb's of inodes per cylinder group */
+	__be16		fs_sectors;     /* sectors per track */
+	__be16		fs_heads;       /* heads per cylinder */
+	__be16		fs_ncg;         /* # of cylinder groups in filesystem */
+	__be16		fs_dirty;       /* fs needs to be fsck'd */
+	__be32		fs_time;        /* last super-block update */
+	__be32		fs_magic;       /* magic number */
+	char		fs_fname[6];    /* file system name */
+	char		fs_fpack[6];    /* file system pack name */
+	__be32		fs_bmsize;      /* size of bitmap in bytes */
+	__be32		fs_tfree;       /* total free data blocks */
+	__be32		fs_tinode;      /* total free inodes */
+	__be32		fs_bmblock;     /* bitmap location. */
+	__be32		fs_replsb;      /* Location of replicated superblock. */
+	__be32		fs_lastialloc;  /* last allocated inode */
+	char		fs_spare[20];   /* space for expansion - MUST BE ZERO */
+	__be32		fs_checksum;    /* checksum of volume portion of fs */
+};
+
+/* efs superblock information in memory */
+struct efs_sb_info {
+	__u32	fs_magic;	/* superblock magic number */
+	__u32	fs_start;	/* first block of filesystem */
+	__u32	first_block;	/* first data block in filesystem */
+	__u32	total_blocks;	/* total number of blocks in filesystem */
+	__u32	group_size;	/* # of blocks a group consists of */ 
+	__u32	data_free;	/* # of free data blocks */
+	__u32	inode_free;	/* # of free inodes */
+	__u16	inode_blocks;	/* # of blocks used for inodes in every grp */
+	__u16	total_groups;	/* # of groups */
+};
+
+#endif /* __EFS_FS_SB_H__ */
+