/* * 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; }