/*
* In this function, we get a new node blk, and write back
* node_blk would be sloadd in RAM, linked by dn->node_blk
*/
block_t new_node_block(struct f2fs_sb_info *sbi,
struct dnode_of_data *dn, unsigned int ofs)
{
struct f2fs_node *f2fs_inode;
struct f2fs_node *node_blk;
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
struct f2fs_summary sum;
struct node_info ni;
block_t blkaddr;
int type;
f2fs_inode = dn->inode_blk;
node_blk = calloc(BLOCK_SZ, 1);
ASSERT(node_blk);
node_blk->footer.nid = cpu_to_le32(dn->nid);
node_blk->footer.ino = f2fs_inode->footer.ino;
node_blk->footer.flag = cpu_to_le32(ofs << OFFSET_BIT_SHIFT);
node_blk->footer.cp_ver = ckpt->checkpoint_ver;
type = CURSEG_COLD_NODE;
if (IS_DNODE(node_blk)) {
if (S_ISDIR(f2fs_inode->i.i_mode))
type = CURSEG_HOT_NODE;
else
type = CURSEG_WARM_NODE;
}
get_node_info(sbi, dn->nid, &ni);
set_summary(&sum, dn->nid, 0, ni.version);
reserve_new_block(sbi, &blkaddr, &sum, type);
/* update nat info */
update_nat_blkaddr(sbi, le32_to_cpu(f2fs_inode->footer.ino),
dn->nid, blkaddr);
dn->node_blk = node_blk;
inc_inode_blocks(dn);
return blkaddr;
}
int f2fs_create(struct f2fs_sb_info *sbi, struct dentry *de)
{
struct f2fs_node *parent, *child;
struct node_info ni;
struct f2fs_summary sum;
block_t blkaddr = NULL_ADDR;
int ret;
/* Find if there is a */
get_node_info(sbi, de->pino, &ni);
if (ni.blk_addr == NULL_ADDR) {
MSG(0, "No parent directory pino=%x\n", de->pino);
return -1;
}
parent = calloc(BLOCK_SZ, 1);
ASSERT(parent);
ret = dev_read_block(parent, ni.blk_addr);
ASSERT(ret >= 0);
/* Must convert inline dentry before the following opertions */
ret = convert_inline_dentry(sbi, parent, ni.blk_addr);
if (ret) {
MSG(0, "Convert inline dentry for pino=%x failed.\n", de->pino);
return -1;
}
ret = f2fs_find_entry(sbi, parent, de);
if (ret) {
MSG(0, "Skip the existing \"%s\" pino=%x ERR=%d\n",
de->name, de->pino, ret);
if (de->file_type == F2FS_FT_REG_FILE)
de->ino = 0;
goto free_parent_dir;
}
child = calloc(BLOCK_SZ, 1);
ASSERT(child);
f2fs_alloc_nid(sbi, &de->ino, 1);
init_inode_block(sbi, child, de);
ret = f2fs_add_link(sbi, parent, child->i.i_name,
le32_to_cpu(child->i.i_namelen),
le32_to_cpu(child->footer.ino),
map_de_type(le16_to_cpu(child->i.i_mode)),
ni.blk_addr, 1);
if (ret) {
MSG(0, "Skip the existing \"%s\" pino=%x ERR=%d\n",
de->name, de->pino, ret);
goto free_child_dir;
}
/* write child */
set_summary(&sum, de->ino, 0, ni.version);
reserve_new_block(sbi, &blkaddr, &sum, CURSEG_HOT_NODE);
/* update nat info */
update_nat_blkaddr(sbi, de->ino, de->ino, blkaddr);
ret = dev_write_block(child, blkaddr);
ASSERT(ret >= 0);
update_free_segments(sbi);
MSG(1, "Info: Create %s -> %s\n"
" -- ino=%x, type=%x, mode=%x, uid=%x, "
"gid=%x, cap=%"PRIx64", size=%lu, pino=%x\n",
de->full_path, de->path,
de->ino, de->file_type, de->mode,
de->uid, de->gid, de->capabilities, de->size, de->pino);
free_child_dir:
free(child);
free_parent_dir:
free(parent);
return 0;
}