int axfs_fill_super(struct super_block *sb, void *data, int silent)
{
struct axfs_super *sbi;
struct inode *root;
int err;
struct axfs_super *sbi_in = (struct axfs_super *)data;
sbi = axfs_get_sbi();
if (IS_ERR(sbi))
return PTR_ERR(sbi);
sb->s_fs_info = (void *)sbi;
memcpy(sbi, sbi_in, sizeof(*sbi));
/* fully populate the incore superblock structures */
err = axfs_do_fill_super(sb);
if (err)
goto out;
sb->s_flags |= MS_RDONLY;
/* Setup the VFS super block now */
sb->s_op = &axfs_sops;
root = axfs_create_vfs_inode(sb, 0);
if (!root) {
err = -EINVAL;
goto out;
}
#if LINUX_VERSION_CODE > KERNEL_VERSION(3,3,0)
sb->s_root = d_make_root(root);
#else
sb->s_root = d_alloc_root(root);
#endif
if (!sb->s_root) {
#if LINUX_VERSION_CODE > KERNEL_VERSION(3,3,0)
#else
iput(root);
#endif
err = -EINVAL;
goto out;
}
err = axfs_init_profiling(sbi);
if (err)
goto out;
return 0;
out:
axfs_put_super(sb);
return err;
}
/******************************************************************************
*
* axfs_fill_super
*
* Description:
* Populates the VFS super block Structure.
*
* Parameters:
* (OUT) sb - superblock of fs instance
*
* (IN) data - used to pass a pointer to the axfs_fill_super_info
*
* (IN) silent - not used
*
* Returns:
* 0 or error number
*
*****************************************************************************/
static int axfs_fill_super(struct super_block *sb, void *data, int silent)
{
struct axfs_super_incore *sbi;
struct axfs_metadata_ptrs_incore *metadata = NULL;
struct axfs_fill_super_info *fsi = NULL;
struct inode *root;
int err;
fsi = (struct axfs_fill_super_info *)data;
/*
* Create the space for the private super block runtime information and store it
* in the VFS super block structure
*/
sbi = vmalloc(sizeof(*sbi));
if (!sbi) {
err = -ENOMEM;
goto out;
}
memset(sbi, 0, sizeof(*sbi));
sb->s_fs_info = sbi;
sb->s_flags |= MS_RDONLY;
sbi->metadata = vmalloc(sizeof(*metadata));
metadata = sbi->metadata;
if (!metadata) {
err = -ENOMEM;
goto out;
}
memset(metadata, 0, sizeof(*metadata));
sbi->phys_start_addr=fsi->physical_start_address;
sbi->virt_start_addr=fsi->virtual_start_address;
printk(KERN_INFO "axfs: start axfs_do_fill_super\n");
/* fully populate the incore superblock structures */
err = axfs_do_fill_super(sb,fsi);
if(err != 0)
goto out;
printk(KERN_INFO "axfs: doned axfs_do_fill_super\n");
err = axfs_check_super(sbi);
if(err != 0)
goto out;
printk(KERN_INFO "axfs: doned axfs_check_super\n");
/* Setup the VFS super block now */
sb->s_op = &axfs_ops;
root = axfs_create_vfs_inode(sb, 0);
if(!root) {
err = -EINVAL;
goto out;
}
sb->s_root = d_alloc_root(root);
if(!sb->s_root) {
iput(root);
err = -EINVAL;
goto out;
}
#ifdef CONFIG_AXFS_PROFILING
init_axfs_profiling(sbi);
#endif
sbi->cblock_buffer[0] = vmalloc(sbi->cblock_size);
sbi->cblock_buffer[1] = vmalloc(sbi->cblock_size);
if ((!sbi->cblock_buffer[0]) || (!sbi->cblock_buffer[1])) {
iput(root);
err = -ENOMEM;
goto out;
}
sbi->current_cnode_index = -1;
vfree(fsi->onmedia_super_block);
vfree(fsi);
return 0;
out:
vfree(fsi->onmedia_super_block);
vfree(fsi);
vfree(metadata);
vfree(sbi);
sb->s_fs_info = NULL;
return err;
}