int make_tux3(struct sb *sb)
{
struct inode *dir = &(struct inode){
.i_sb = sb,
.i_mode = S_IFDIR | 0755,
};
struct tux_iattr *iattr = &(struct tux_iattr){};
int err;
err = clear_other_magic(sb);
if (err)
return err;
trace("create inode table");
init_btree(itable_btree(sb), sb, no_root, &itable_ops);
trace("create bitmap");
sb->bitmap = __tux_create_inode(dir, TUX_BITMAP_INO, iattr, 0);
if (IS_ERR(sb->bitmap)) {
err = PTR_ERR(sb->bitmap);
goto eek;
}
assert(sb->bitmap->inum == TUX_BITMAP_INO);
sb->bitmap->i_size = (sb->volblocks + 7) >> 3;
/* should this?, tuxtruncate(sb->bitmap, (sb->volblocks + 7) >> 3); */
trace("reserve superblock");
/* Always 8K regardless of blocksize */
int reserve = 1 << (sb->blockbits > 13 ? 0 : 13 - sb->blockbits);
for (int i = 0; i < reserve; i++) {
block_t block = balloc_from_range(sb, i, 1, 1);
if (block == -1)
goto eek;
trace("reserve %Lx", (L)block); // error ???
}
trace("create version table");
sb->vtable = __tux_create_inode(dir, TUX_VTABLE_INO, iattr, 0);
if (IS_ERR(sb->vtable)) {
err = PTR_ERR(sb->vtable);
goto eek;
}
assert(sb->vtable->inum == TUX_VTABLE_INO);
trace("create atom dictionary");
sb->atable = __tux_create_inode(dir, TUX_ATABLE_INO, iattr, 0);
if (IS_ERR(sb->atable)) {
err = PTR_ERR(sb->atable);
goto eek;
}
assert(sb->atable->inum == TUX_ATABLE_INO);
sb->atomref_base = 1 << (40 - sb->blockbits); // see xattr.c
sb->unatom_base = sb->atomref_base + (1 << (34 - sb->blockbits));
sb->atomgen = 1; // atom 0 not allowed, means end of atom freelist
trace("create root directory");
struct tux_iattr root_iattr = { .mode = S_IFDIR | 0755, };
sb->rootdir = __tux_create_inode(dir, TUX_ROOTDIR_INO, &root_iattr, 0);
if (IS_ERR(sb->rootdir)) {
err = PTR_ERR(sb->rootdir);
goto eek;
}
assert(sb->rootdir->inum == TUX_ROOTDIR_INO);
if ((err = sync_super(sb)))
goto eek;
show_buffers(mapping(sb->bitmap));
show_buffers(mapping(sb->rootdir));
show_buffers(sb->volmap->map);
return 0;
eek:
if (err)
warn("eek, %s", strerror(-err));
iput(sb->bitmap);
sb->bitmap = NULL;
return err ? err : -ENOSPC; // just guess
}
int make_tux3(struct sb *sb)
{
int err;
err = clear_other_magic(sb);
if (err)
return err;
change_begin_atomic(sb);
trace("create bitmap");
sb->bitmap = create_internal_inode(sb, TUX_BITMAP_INO, NULL);
if (IS_ERR(sb->bitmap)) {
err = PTR_ERR(sb->bitmap);
goto error_change_end;
}
change_end_atomic(sb);
/* Set fake backend mark to modify backend objects. */
tux3_start_backend(sb);
err = reserve_superblock(sb);
tux3_end_backend();
if (err)
goto error;
change_begin_atomic(sb);
#if 0
trace("create version table");
sb->vtable = create_internal_inode(sb, TUX_VTABLE_INO, NULL);
if (IS_ERR(sb->vtable)) {
err = PTR_ERR(sb->vtable);
goto error_change_end;
}
#endif
trace("create atom dictionary");
sb->atable = create_internal_inode(sb, TUX_ATABLE_INO, NULL);
if (IS_ERR(sb->atable)) {
err = PTR_ERR(sb->atable);
goto error_change_end;
}
trace("create root directory");
struct tux_iattr root_iattr = { .mode = S_IFDIR | 0755, };
sb->rootdir = create_internal_inode(sb, TUX_ROOTDIR_INO, &root_iattr);
if (IS_ERR(sb->rootdir)) {
err = PTR_ERR(sb->rootdir);
goto error_change_end;
}
change_end_atomic(sb);
err = sync_super(sb);
if (err)
goto error;
show_buffers(mapping(sb->bitmap));
show_buffers(mapping(sb->rootdir));
show_buffers(sb->volmap->map);
return 0;
error_change_end:
change_end_atomic(sb);
error:
tux3_err(sb, "eek, %s", strerror(-err));
iput(sb->bitmap);
sb->bitmap = NULL;
return err;
}
int tux3_init_mem(void)
{
return tux3_init_hole_cache();
}
void tux3_exit_mem(void)
{
tux3_destroy_hole_cache();
}