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/*
* <raw.c>
*
* Open Hack'Ware BIOS raw file system management
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include "bios.h"
#include "../libpart/libpart.h"
#include "libfs.h"
/* Raw filesystem (ie no filesystem) */
static inode_t *fs_raw_get_inode (inode_t *parent, const unsigned char *name)
{
inode_t *new;
fs_t *fs;
int flags;
if (parent != NULL) {
return NULL;
}
/* Open root inode */
flags = INODE_TYPE_DIR;
fs = NULL;
new = malloc(sizeof(inode_t));
memset(new, 0, sizeof(inode_t));
new->flags = flags;
new->name = strdup(name);
return new;
}
static void fs_raw_put_inode (inode_t *inode)
{
free(inode);
}
static uint32_t fs_raw_map_bloc (unused inode_t *inode, uint32_t bloc)
{
if (inode != NULL
/* XXX: can't figure out why I did this... */
/* && inode == inode->fs->bootfile*/
)
bloc += inode->blocs[0].bloc;
return bloc;
}
static inode_t *fs_raw_get_special_inode (fs_t *fs, int type)
{
const unsigned char *name;
inode_t *new, *parent, **inp;
int flags;
new = NULL;
name = NULL;
parent = NULL;
inp = NULL;
flags = 0;
switch (type) {
case FILE_ROOT:
if (fs->root != NULL) {
new = fs->root;
} else {
flags = INODE_TYPE_DIR;
parent = NULL;
name = NULL;
inp = &fs->root;
}
break;
case FILE_BOOT:
if (fs->bootfile != NULL) {
dprintf("bootfile already exists\n");
new = fs->bootfile;
} else {
new = part_private_get(fs_part(fs));
if (fs->bootdir == NULL) {
dprintf("Get boot directory\n");
fs->bootdir = fs_raw_get_special_inode(fs, FILE_BOOTDIR);
}
parent = fs->bootdir;
if (new != NULL) {
dprintf("Fix bootfile\n");
new->parent = parent;
new->fs = fs;
} else {
dprintf("New bootfile\n");
flags = INODE_TYPE_FILE | INODE_FLAG_EXEC | INODE_FLAG_BOOT;
name = "ofwboot";
inp = &fs->bootfile;
}
}
break;
case FILE_BOOTDIR:
if (fs->bootdir != NULL) {
new = fs->bootdir;
} else {
flags = INODE_TYPE_DIR;
parent = fs->root;
name = "boot";
inp = &fs->bootdir;
}
break;
default:
return NULL;
}
if (new == NULL) {
new = malloc(sizeof(inode_t));
memset(new, 0, sizeof(inode_t));
new->flags = flags;
new->parent = parent;
if (name != NULL)
new->name = strdup(name);
new->fs = fs;
*inp = new;
}
return new;
}
static fs_ops_t fs_ops_raw = {
&fs_raw_get_inode,
&fs_raw_put_inode,
&fs_raw_map_bloc,
&fs_raw_get_special_inode,
};
int fs_raw_set_bootfile (part_t *part,
uint32_t start_bloc, uint32_t start_offset,
uint32_t size_bloc, uint32_t size_offset)
{
inode_t *new;
new = malloc(sizeof(inode_t));
if (new == NULL)
return -1;
DPRINTF("%s: pos %d %d size %d %d\n", __func__, start_bloc, start_offset,
size_bloc, size_offset);
memset(new, 0, sizeof(inode_t));
new->flags = INODE_TYPE_FILE | INODE_FLAG_EXEC | INODE_FLAG_BOOT;
new->name = "ofwboot";
new->blocs[0].bloc = start_bloc;
new->blocs[0].offset = start_offset;
new->size.bloc = size_bloc;
new->size.offset = size_offset;
new->nb_blocs = size_bloc;
part_private_set(part, new);
return 0;
}
int fs_raw_probe (part_t *part, uint32_t *size,
fs_ops_t **fs_ops, unsigned char **name,
unused void **private)
{
DPRINTF("%s: %p map_bloc %p\n", __func__, &fs_ops_raw, &fs_raw_map_bloc);
*fs_ops = &fs_ops_raw;
*name = "Raw FS";
*size = part_size(part);
return FS_TYPE_RAW;
}
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