static int nilfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) { struct inode *inode; struct nilfs_transaction_info ti; int err; if (!new_valid_dev(rdev)) return -EINVAL; err = nilfs_transaction_begin(dir->i_sb, &ti, 1); if (err) return err; inode = nilfs_new_inode(dir, mode); err = PTR_ERR(inode); if (!IS_ERR(inode)) { init_special_inode(inode, inode->i_mode, rdev); mark_inode_dirty(inode); err = nilfs_add_nondir(dentry, inode); } if (!err) err = nilfs_transaction_commit(dir->i_sb); else nilfs_transaction_abort(dir->i_sb); return err; }
/* * By the time this is called, we already have created * the directory cache entry for the new file, but it * is so far negative - it has no inode. * * If the create succeeds, we fill in the inode information * with d_instantiate(). */ static int nilfs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd) { struct inode *inode; struct nilfs_transaction_info ti; int err; err = nilfs_transaction_begin(dir->i_sb, &ti, 1); if (err) return err; inode = nilfs_new_inode(dir, mode); err = PTR_ERR(inode); if (!IS_ERR(inode)) { inode->i_op = &nilfs_file_inode_operations; inode->i_fop = &nilfs_file_operations; inode->i_mapping->a_ops = &nilfs_aops; mark_inode_dirty(inode); err = nilfs_add_nondir(dentry, inode); } if (!err) err = nilfs_transaction_commit(dir->i_sb); else nilfs_transaction_abort(dir->i_sb); return err; }
static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) { struct inode *inode; struct nilfs_transaction_info ti; int err; if (dir->i_nlink >= NILFS_LINK_MAX) return -EMLINK; err = nilfs_transaction_begin(dir->i_sb, &ti, 1); if (err) return err; inc_nlink(dir); inode = nilfs_new_inode(dir, S_IFDIR | mode); err = PTR_ERR(inode); if (IS_ERR(inode)) goto out_dir; inode->i_op = &nilfs_dir_inode_operations; inode->i_fop = &nilfs_dir_operations; inode->i_mapping->a_ops = &nilfs_aops; inc_nlink(inode); err = nilfs_make_empty(inode, dir); if (err) goto out_fail; err = nilfs_add_link(dentry, inode); if (err) goto out_fail; nilfs_mark_inode_dirty(inode); d_instantiate(dentry, inode); out: if (!err) err = nilfs_transaction_commit(dir->i_sb); else nilfs_transaction_abort(dir->i_sb); return err; out_fail: drop_nlink(inode); drop_nlink(inode); nilfs_mark_inode_dirty(inode); iput(inode); out_dir: drop_nlink(dir); nilfs_mark_inode_dirty(dir); goto out; }
static int nilfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { struct nilfs_transaction_info ti; struct super_block *sb = dir->i_sb; unsigned int l = strlen(symname) + 1; struct inode *inode; int err; if (l > sb->s_blocksize) return -ENAMETOOLONG; err = nilfs_transaction_begin(dir->i_sb, &ti, 1); if (err) return err; inode = nilfs_new_inode(dir, S_IFLNK | S_IRWXUGO); err = PTR_ERR(inode); if (IS_ERR(inode)) goto out; /* slow symlink */ inode->i_op = &nilfs_symlink_inode_operations; inode_nohighmem(inode); inode->i_mapping->a_ops = &nilfs_aops; err = page_symlink(inode, symname, l); if (err) goto out_fail; /* mark_inode_dirty(inode); */ /* page_symlink() do this */ err = nilfs_add_nondir(dentry, inode); out: if (!err) err = nilfs_transaction_commit(dir->i_sb); else nilfs_transaction_abort(dir->i_sb); return err; out_fail: drop_nlink(inode); nilfs_mark_inode_dirty(inode); unlock_new_inode(inode); iput(inode); goto out; }