file_system_t *init_ramfs( void ){ DEBUG_HERE
ramfs_file_header_t *ramfs_root;
ramfs_header_t *head = knew( ramfs_header_t );
file_system_t *ret = knew( file_system_t );
head->ramfs_files = knew( ramfs_file_header_t );
ramfs_root = head->ramfs_files;
head->ramfs_i_count = 1;
memcpy( ramfs_root->name, "root", 5 );
ramfs_root->type = FS_DIR;
ramfs_root->mask = 0777;
ramfs_root->inode = head->ramfs_i_count++;
ramfs_root->size = 0;
ramfs_root->links = 1;
ret->name = "ramfs";
ret->i_root = ramfs_root->inode;
ret->fs_data = head;
ret->ops = &ramfs_file_funcs;
return ret;
}
ext2_device_t *ext2_create_device( char *path ){
ext2_device_t *ret = knew( ext2_device_t );
ret->fd = open( path, O_RDONLY );
if ( ret->fd < 0 ){
printf( "[ext2] Could not open file\n" );
return 0;
}
ret->sprblk = knew( char[1024] );
ret->esprblk = (ext2_ex_sprblk_t *)((unsigned long)ret->sprblk + 84);
lseek( ret->fd, 1024, 0 );
read( ret->fd, ret->sprblk, 1024 );
ret->block_size = ( 1024 << ret->sprblk->block_size );
ret->block_groups = ret->sprblk->n_blocks / ret->sprblk->n_block_block_grp;
ret->block_groups += ( ret->sprblk->n_blocks % ret->sprblk->n_block_block_grp != 0 )?1:0;
ret->blkdesc = knew( ext2_block_desc_t[ ret->block_groups ]);
lseek( ret->fd, ret->block_size * 2, 0 );
read( ret->fd, ret->blkdesc, sizeof( ext2_block_desc_t ) * ret->block_groups );
return ret;
}
file_node_t *ext2_create( char *path ){
file_node_t *ret = knew( file_node_t );
ret->fs = knew( file_system_t );
ret->fs->fs_data = ext2_create_device( path );
ret->inode = 2;
//ret->parent = ret;
//memcpy( ret->name, "root", 5 );
return ret;
}
void set_fs_root( file_system_t *new_root ){
if ( !fs_root )
fs_root = knew( file_node_t );
fs_root->inode = new_root->i_root;
fs_root->fs = new_root;
}
int ramfs_mknod( file_node_t *node, char *name, int mode, int dev ){ DEBUG_HERE
ramfs_header_t *head = node->fs->fs_data;
ramfs_file_header_t *filehead = ramfs_get_file_h( head, node->inode );
ramfs_file_header_t *temp, *move;
printf( "[ ] Here from ramfs_mknod... 0x%x\n", head );
unsigned long ramfs_i_count = head->ramfs_i_count;
if ( filehead->type != FS_DIR )
return -1;
ramfs_mkdir_entry( node, name, head->ramfs_i_count );
temp = knew( ramfs_file_header_t );
temp->mask = mode;
temp->inode = ramfs_i_count;
temp->type = dev;
temp->size = 0;
temp->parent = node;
temp->links = 1;
memcpy( head->ramfs_files[ ramfs_i_count ].name, name, strlen( name ) + 1 );
for ( move = filehead; move->next; move = move->next );
move->next = temp;
head->ramfs_i_count++;
return 0;
}
int ramfs_mkdir( file_node_t *node, char *name, int mode ){ DEBUG_HERE
ramfs_header_t *head = node->fs->fs_data;
ramfs_file_header_t *filehead = ramfs_get_file_h( head, node->inode );
ramfs_file_header_t *temp, *move;
unsigned long ramfs_i_count = head->ramfs_i_count;
if ( filehead->type != FS_DIR )
return -1;
ramfs_mkdir_entry( node, name, head->ramfs_i_count );
temp = knew( ramfs_file_header_t );
temp->mask = mode;
temp->type = FS_DIR;
temp->inode = ramfs_i_count;
temp->parent = node;
temp->links = 1;
temp->data = 0;
memcpy( head->ramfs_files[ head->ramfs_i_count ].name, name, strlen( name + 1 ));
for ( move = filehead; move->next; move = move->next );
move->next = temp;
head->ramfs_i_count++;
return 0;
}
int check_perms( task_t *task, file_node_t *node, int flags ){
int perms = 0000;
int good_op = 1;
file_info_t *n_info = knew( file_info_t );
node->fs->ops->get_info( node, n_info );
if ( task->uid == n_info->uid ){
perms = n_info->mask >> P_USHIFT & 07;
} else if ( task->gid == n_info->gid ){
int ramfs_mkdir_entry( file_node_t *node, char *name, int inode ){
ramfs_file_header_t *filehead = ramfs_get_file_h( node->fs->fs_data, node->inode );
if ( filehead->type != FS_DIR )
return -1;
//struct dirent *dir;
char *file_data = filehead->data;
ramfs_dirent_t *dir, *temp = 0;
int nlen = strlen( name ) + 1;
unsigned int dsize = sizeof( struct dirent ) + nlen;
ramfs_header_t *head = node->fs->fs_data;
dir = knew( ramfs_dirent_t );
printf( "doot" );
dir->inode = inode;
dir->size = dsize;
dir->name_len = nlen;
dir->name = knew( char[ strlen( name )]);
memcpy( dir->name, name, nlen );
printf( "deet" );
if ( !filehead->data ){
filehead->data = dir;
} else {
printf( "diit" );
for ( temp = (ramfs_dirent_t *)file_data; temp->next; temp = temp->next );
temp->next = dir;
}
filehead->size += dir->size;
printf( "daat\n" );
return 0;
}
int fatfs_vfs_lookup( struct file_node *node, struct file_node *buf, char *name, int flags ){
int ret = -ERROR_NOT_FOUND;
fatfs_device_t *dev = node->fs->devstruct;
unsigned cluster_size;
//char namebuf[256];
char *namebuf;
uint8_t *sectbuf;
int i;
int has_longname = 0;
fatfs_dirent_t *dirbuf;
fatfs_dircache_t *dircache;
fatfs_dircache_t *newcache;
fatfs_longname_ent_t *longentbuf;
dircache = hashmap_get( dev->inode_map, node->inode );
if ( dircache ){
namebuf = knew( char[ 256 ]);
if ( dircache->dir.attributes & FAT_ATTR_DIRECTORY ){
cluster_size = dev->bpb->bytes_per_sect * dev->bpb->sect_per_clus;
sectbuf = knew( uint8_t[cluster_size] );
dirbuf = (void *)sectbuf;
VFS_FUNCTION(( &dev->device_node ), read, sectbuf,
cluster_size, dev->bpb->bytes_per_sect * node->inode );
for ( i = 0; i < dev->bpb->dirents; i++ ){
if ( *(char *)(dirbuf + i) == 0 || *(char *)(dirbuf + i) == 0xe5 )
continue;
if ( dirbuf[i].attributes == FAT_ATTR_LONGNAME ){
longentbuf = (void *)(dirbuf + i);
fatfs_apply_longname( longentbuf, namebuf, 256 );
has_longname = 1;
} else {
char *fname = has_longname? namebuf : (char *)dirbuf[i].name;
if ( strcmp( name, fname ) == 0 ){
// Found it, cool
newcache = knew( fatfs_dircache_t );
memcpy( &newcache->dir, dirbuf + i, sizeof( fatfs_dirent_t ));
newcache->references = 0;
buf->inode = fatfs_relclus_to_sect( dev, newcache->dir.cluster_low );
buf->fs = node->fs;
buf->mount = 0;
if ( hashmap_get( dev->inode_map, buf->inode ) == 0 )
hashmap_add( dev->inode_map, buf->inode, newcache );
ret = 0;
break;
}
has_longname = 0;
namebuf[0] = 0;
}
}
kfree( sectbuf );
} else {
ret = -ERROR_NOT_DIRECTORY;
}
kfree( namebuf );
} else {
