first commit

1 files changed, 53 insertions, 0 deletions

diff --git a/include/linux/efs_vh.h b/include/linux/efs_vh.h
new file mode 100644
index 000000000..8a11150c6
--- /dev/null
+++ b/include/linux/efs_vh.h
@@ -0,0 +1,53 @@
+/*
+ * efs_vh.h
+ *
+ * Copyright (c) 1999 Al Smith
+ *
+ * Portions derived from IRIX header files (c) 1985 MIPS Computer Systems, Inc.
+ */
+
+#ifndef __EFS_VH_H__
+#define __EFS_VH_H__
+
+#define VHMAGIC		0xbe5a941	/* volume header magic number */
+#define NPARTAB		16		/* 16 unix partitions */
+#define NVDIR		15		/* max of 15 directory entries */
+#define BFNAMESIZE	16		/* max 16 chars in boot file name */
+#define VDNAMESIZE	8
+
+struct volume_directory {
+	char	vd_name[VDNAMESIZE];	/* name */
+	__be32	vd_lbn;			/* logical block number */
+	__be32	vd_nbytes;		/* file length in bytes */
+};
+
+struct partition_table {	/* one per logical partition */
+	__be32	pt_nblks;	/* # of logical blks in partition */
+	__be32	pt_firstlbn;	/* first lbn of partition */
+	__be32	pt_type;	/* use of partition */
+};
+
+struct volume_header {
+	__be32	vh_magic;			/* identifies volume header */
+	__be16	vh_rootpt;			/* root partition number */
+	__be16	vh_swappt;			/* swap partition number */
+	char	vh_bootfile[BFNAMESIZE];	/* name of file to boot */
+	char	pad[48];			/* device param space */
+	struct volume_directory vh_vd[NVDIR];	/* other vol hdr contents */
+	struct partition_table  vh_pt[NPARTAB];	/* device partition layout */
+	__be32	vh_csum;			/* volume header checksum */
+	__be32	vh_fill;			/* fill out to 512 bytes */
+};
+
+/* partition type sysv is used for EFS format CD-ROM partitions */
+#define SGI_SYSV	0x05
+#define SGI_EFS		0x07
+#define IS_EFS(x)	(((x) == SGI_EFS) || ((x) == SGI_SYSV))
+
+struct pt_types {
+	int	pt_type;
+	char	*pt_name;
+};
+
+#endif /* __EFS_VH_H__ */
+