static void qnx4_read_inode(struct inode *inode) { struct buffer_head *bh; struct qnx4_inode_entry *raw_inode; int block, ino; struct super_block *sb = inode->i_sb; struct qnx4_inode_entry *qnx4_inode = qnx4_raw_inode(inode); ino = inode->i_ino; inode->i_mode = 0; QNX4DEBUG(("Reading inode : [%d]\n", ino)); if (!ino) { printk("qnx4: bad inode number on dev %s: %d is out of range\n", sb->s_id, ino); return; } block = ino / QNX4_INODES_PER_BLOCK; if (!(bh = sb_bread(sb, block))) { printk("qnx4: major problem: unable to read inode from dev " "%s\n", sb->s_id); return; } raw_inode = ((struct qnx4_inode_entry *) bh->b_data) + (ino % QNX4_INODES_PER_BLOCK); inode->i_mode = le16_to_cpu(raw_inode->di_mode); inode->i_uid = (uid_t)le16_to_cpu(raw_inode->di_uid); inode->i_gid = (gid_t)le16_to_cpu(raw_inode->di_gid); inode->i_nlink = le16_to_cpu(raw_inode->di_nlink); inode->i_size = le32_to_cpu(raw_inode->di_size); inode->i_mtime.tv_sec = le32_to_cpu(raw_inode->di_mtime); inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_sec = le32_to_cpu(raw_inode->di_atime); inode->i_atime.tv_nsec = 0; inode->i_ctime.tv_sec = le32_to_cpu(raw_inode->di_ctime); inode->i_ctime.tv_nsec = 0; inode->i_blocks = le32_to_cpu(raw_inode->di_first_xtnt.xtnt_size); inode->i_blksize = QNX4_DIR_ENTRY_SIZE; memcpy(qnx4_inode, raw_inode, QNX4_DIR_ENTRY_SIZE); if (S_ISREG(inode->i_mode)) { inode->i_op = &qnx4_file_inode_operations; inode->i_fop = &qnx4_file_operations; inode->i_mapping->a_ops = &qnx4_aops; qnx4_i(inode)->mmu_private = inode->i_size; } else if (S_ISDIR(inode->i_mode)) { inode->i_op = &qnx4_dir_inode_operations; inode->i_fop = &qnx4_dir_operations; } else if (S_ISLNK(inode->i_mode)) { inode->i_op = &page_symlink_inode_operations; inode->i_mapping->a_ops = &qnx4_aops; qnx4_i(inode)->mmu_private = inode->i_size; } else printk("qnx4: bad inode %d on dev %s\n",ino,sb->s_id); brelse(bh); }
static int qnx4_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) { struct qnx4_inode_info *qnx4_inode = qnx4_i(page->mapping->host); return cont_prepare_write(page, from, to, qnx4_get_block, &qnx4_inode->mmu_private); }
static int qnx4_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { struct qnx4_inode_info *qnx4_inode = qnx4_i(mapping->host); *pagep = NULL; return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, qnx4_get_block, &qnx4_inode->mmu_private); }
static int qnx4_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { struct qnx4_inode_info *qnx4_inode = qnx4_i(mapping->host); int ret; *pagep = NULL; ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, qnx4_get_block, &qnx4_inode->mmu_private); if (unlikely(ret)) { loff_t isize = mapping->host->i_size; if (pos + len > isize) vmtruncate(mapping->host, isize); } return ret; }
static void qnx4_destroy_inode(struct inode *inode) { kmem_cache_free(qnx4_inode_cachep, qnx4_i(inode)); }
struct inode *qnx4_iget(struct super_block *sb, unsigned long ino) { struct buffer_head *bh; struct qnx4_inode_entry *raw_inode; int block; struct qnx4_inode_entry *qnx4_inode; struct inode *inode; inode = iget_locked(sb, ino); if (!inode) return ERR_PTR(-ENOMEM); if (!(inode->i_state & I_NEW)) return inode; qnx4_inode = qnx4_raw_inode(inode); inode->i_mode = 0; QNX4DEBUG((KERN_INFO "reading inode : [%d]\n", ino)); if (!ino) { printk(KERN_ERR "qnx4: bad inode number on dev %s: %lu is " "out of range\n", sb->s_id, ino); iget_failed(inode); return ERR_PTR(-EIO); } block = ino / QNX4_INODES_PER_BLOCK; if (!(bh = sb_bread(sb, block))) { printk(KERN_ERR "qnx4: major problem: unable to read inode from dev " "%s\n", sb->s_id); iget_failed(inode); return ERR_PTR(-EIO); } raw_inode = ((struct qnx4_inode_entry *) bh->b_data) + (ino % QNX4_INODES_PER_BLOCK); inode->i_mode = le16_to_cpu(raw_inode->di_mode); inode->i_uid = (uid_t)le16_to_cpu(raw_inode->di_uid); inode->i_gid = (gid_t)le16_to_cpu(raw_inode->di_gid); inode->i_nlink = le16_to_cpu(raw_inode->di_nlink); inode->i_size = le32_to_cpu(raw_inode->di_size); inode->i_mtime.tv_sec = le32_to_cpu(raw_inode->di_mtime); inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_sec = le32_to_cpu(raw_inode->di_atime); inode->i_atime.tv_nsec = 0; inode->i_ctime.tv_sec = le32_to_cpu(raw_inode->di_ctime); inode->i_ctime.tv_nsec = 0; inode->i_blocks = le32_to_cpu(raw_inode->di_first_xtnt.xtnt_size); memcpy(qnx4_inode, raw_inode, QNX4_DIR_ENTRY_SIZE); if (S_ISREG(inode->i_mode)) { inode->i_fop = &generic_ro_fops; inode->i_mapping->a_ops = &qnx4_aops; qnx4_i(inode)->mmu_private = inode->i_size; } else if (S_ISDIR(inode->i_mode)) { inode->i_op = &qnx4_dir_inode_operations; inode->i_fop = &qnx4_dir_operations; } else if (S_ISLNK(inode->i_mode)) { inode->i_op = &page_symlink_inode_operations; inode->i_mapping->a_ops = &qnx4_aops; qnx4_i(inode)->mmu_private = inode->i_size; } else { printk(KERN_ERR "qnx4: bad inode %lu on dev %s\n", ino, sb->s_id); iget_failed(inode); brelse(bh); return ERR_PTR(-EIO); } brelse(bh); unlock_new_inode(inode); return inode; }
static void qnx4_i_callback(struct rcu_head *head) { struct inode *inode = container_of(head, struct inode, i_rcu); kmem_cache_free(qnx4_inode_cachep, qnx4_i(inode)); }
static void qnx4_i_callback(struct rcu_head *head) { struct inode *inode = container_of(head, struct inode, i_rcu); INIT_LIST_HEAD(&inode->i_dentry); kmem_cache_free(qnx4_inode_cachep, qnx4_i(inode)); }