linux/fs/freevxfs/vxfs_fshead.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2000-2001 Christoph Hellwig.
 * Copyright (c) 2016 Krzysztof Blaszkowski
 */

/*
 * Veritas filesystem driver - fileset header routines.
 */
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>

#include "vxfs.h"
#include "vxfs_inode.h"
#include "vxfs_extern.h"
#include "vxfs_fshead.h"


#ifdef DIAGNOSTIC
static void
vxfs_dumpfsh(struct vxfs_fsh *fhp)
{
	printk("\n\ndumping fileset header:\n");
	printk("----------------------------\n");
	printk("version: %u\n", fhp->fsh_version);
	printk("fsindex: %u\n", fhp->fsh_fsindex);
	printk("iauino: %u\tninodes:%u\n",
			fhp->fsh_iauino, fhp->fsh_ninodes);
	printk("maxinode: %u\tlctino: %u\n",
			fhp->fsh_maxinode, fhp->fsh_lctino);
	printk("nau: %u\n", fhp->fsh_nau);
	printk("ilistino[0]: %u\tilistino[1]: %u\n",
			fhp->fsh_ilistino[0], fhp->fsh_ilistino[1]);
}
#endif

/**
 * vxfs_getfsh - read fileset header into memory
 * @ip:		the (fake) fileset header inode
 * @which:	0 for the structural, 1 for the primary fsh.
 *
 * Description:
 *   vxfs_getfsh reads either the structural or primary fileset header
 *   described by @ip into memory.
 *
 * Returns:
 *   The fileset header structure on success, else Zero.
 */
static struct vxfs_fsh *
vxfs_getfsh(struct inode *ip, int which)
{ … }

/**
 * vxfs_read_fshead - read the fileset headers
 * @sbp:	superblock to which the fileset belongs
 *
 * Description:
 *   vxfs_read_fshead will fill the inode and structural inode list in @sb.
 *
 * Returns:
 *   Zero on success, else a negative error code (-EINVAL).
 */
int
vxfs_read_fshead(struct super_block *sbp)
{ … }