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 000000000000..8a11150c61fe
--- /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__ */
+