cregit-Linux how code gets into the kernel

Release 4.7 include/linux/efs_vh.h

Directory: include/linux
/*
 * 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__ */


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Directory: include/linux
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