Exemplo n.º 1
0
struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
{
	struct super_block *sb = dir->i_sb;
	struct the_nilfs *nilfs = sb->s_fs_info;
	struct inode *inode;
	struct nilfs_inode_info *ii;
	struct nilfs_root *root;
	int err = -ENOMEM;
	ino_t ino;

	inode = new_inode(sb);
	if (unlikely(!inode))
		goto failed;

	mapping_set_gfp_mask(inode->i_mapping,
			     mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);

	root = NILFS_I(dir)->i_root;
	ii = NILFS_I(inode);
	ii->i_state = 1 << NILFS_I_NEW;
	ii->i_root = root;

	err = nilfs_ifile_create_inode(root->ifile, &ino, &ii->i_bh);
	if (unlikely(err))
		goto failed_ifile_create_inode;
	/* reference count of i_bh inherits from nilfs_mdt_read_block() */

	atomic_inc(&root->inodes_count);
	inode_init_owner(inode, dir, mode);
	inode->i_ino = ino;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;

	if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
		err = nilfs_bmap_read(ii->i_bmap, NULL);
		if (err < 0)
			goto failed_bmap;

		set_bit(NILFS_I_BMAP, &ii->i_state);
		/* No lock is needed; iget() ensures it. */
	}

	ii->i_flags = nilfs_mask_flags(
		mode, NILFS_I(dir)->i_flags & NILFS_FL_INHERITED);

	/* ii->i_file_acl = 0; */
	/* ii->i_dir_acl = 0; */
	ii->i_dir_start_lookup = 0;
	nilfs_set_inode_flags(inode);
	spin_lock(&nilfs->ns_next_gen_lock);
	inode->i_generation = nilfs->ns_next_generation++;
	spin_unlock(&nilfs->ns_next_gen_lock);
	insert_inode_hash(inode);

	err = nilfs_init_acl(inode, dir);
	if (unlikely(err))
		goto failed_acl; /* never occur. When supporting
				    nilfs_init_acl(), proper cancellation of
				    above jobs should be considered */

	return inode;

 failed_acl:
 failed_bmap:
	clear_nlink(inode);
	iput(inode);  /* raw_inode will be deleted through
			 generic_delete_inode() */
	goto failed;

 failed_ifile_create_inode:
	make_bad_inode(inode);
	iput(inode);  /* if i_nlink == 1, generic_forget_inode() will be
			 called */
 failed:
	return ERR_PTR(err);
}
Exemplo n.º 2
0
struct inode *nilfs_new_inode(struct inode *dir, int mode)
{
	struct super_block *sb = dir->i_sb;
	struct nilfs_sb_info *sbi = NILFS_SB(sb);
	struct inode *inode;
	struct nilfs_inode_info *ii;
	int err = -ENOMEM;
	ino_t ino;

	inode = new_inode(sb);
	if (unlikely(!inode))
		goto failed;

	mapping_set_gfp_mask(inode->i_mapping,
			     mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);

	ii = NILFS_I(inode);
	ii->i_state = 1 << NILFS_I_NEW;

	err = nilfs_ifile_create_inode(sbi->s_ifile, &ino, &ii->i_bh);
	if (unlikely(err))
		goto failed_ifile_create_inode;
	/* reference count of i_bh inherits from nilfs_mdt_read_block() */

	atomic_inc(&sbi->s_inodes_count);

	inode->i_uid = current_fsuid();
	if (dir->i_mode & S_ISGID) {
		inode->i_gid = dir->i_gid;
		if (S_ISDIR(mode))
			mode |= S_ISGID;
	} else
		inode->i_gid = current_fsgid();

	inode->i_mode = mode;
	inode->i_ino = ino;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;

	if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
		err = nilfs_bmap_read(ii->i_bmap, NULL);
		if (err < 0)
			goto failed_bmap;

		set_bit(NILFS_I_BMAP, &ii->i_state);
		/* No lock is needed; iget() ensures it. */
	}

	ii->i_flags = NILFS_I(dir)->i_flags;
	if (S_ISLNK(mode))
		ii->i_flags &= ~(NILFS_IMMUTABLE_FL | NILFS_APPEND_FL);
	if (!S_ISDIR(mode))
		ii->i_flags &= ~NILFS_DIRSYNC_FL;

	/* ii->i_file_acl = 0; */
	/* ii->i_dir_acl = 0; */
	ii->i_dir_start_lookup = 0;
	ii->i_cno = 0;
	nilfs_set_inode_flags(inode);
	spin_lock(&sbi->s_next_gen_lock);
	inode->i_generation = sbi->s_next_generation++;
	spin_unlock(&sbi->s_next_gen_lock);
	insert_inode_hash(inode);

	err = nilfs_init_acl(inode, dir);
	if (unlikely(err))
		goto failed_acl; /* never occur. When supporting
				    nilfs_init_acl(), proper cancellation of
				    above jobs should be considered */

	mark_inode_dirty(inode);
	return inode;

 failed_acl:
 failed_bmap:
	inode->i_nlink = 0;
	iput(inode);  /* raw_inode will be deleted through
			 generic_delete_inode() */
	goto failed;

 failed_ifile_create_inode:
	make_bad_inode(inode);
	iput(inode);  /* if i_nlink == 1, generic_forget_inode() will be
			 called */
 failed:
	return ERR_PTR(err);
}
Exemplo n.º 3
0
static int nilfs_insert_inode_locked(struct inode *inode,
				     struct nilfs_root *root,
				     unsigned long ino)
{
	struct nilfs_iget_args args = {
		.ino = ino, .root = root, .cno = 0, .for_gc = 0
	};

	return insert_inode_locked4(inode, ino, nilfs_iget_test, &args);
}

struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
{
	struct super_block *sb = dir->i_sb;
	struct the_nilfs *nilfs = sb->s_fs_info;
	struct inode *inode;
	struct nilfs_inode_info *ii;
	struct nilfs_root *root;
	int err = -ENOMEM;
	ino_t ino;

	inode = new_inode(sb);
	if (unlikely(!inode))
		goto failed;

	mapping_set_gfp_mask(inode->i_mapping,
			   mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS));

	root = NILFS_I(dir)->i_root;
	ii = NILFS_I(inode);
	ii->i_state = BIT(NILFS_I_NEW);
	ii->i_root = root;

	err = nilfs_ifile_create_inode(root->ifile, &ino, &ii->i_bh);
	if (unlikely(err))
		goto failed_ifile_create_inode;
	/* reference count of i_bh inherits from nilfs_mdt_read_block() */

	atomic64_inc(&root->inodes_count);
	inode_init_owner(inode, dir, mode);
	inode->i_ino = ino;
	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);

	if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
		err = nilfs_bmap_read(ii->i_bmap, NULL);
		if (err < 0)
			goto failed_after_creation;

		set_bit(NILFS_I_BMAP, &ii->i_state);
		/* No lock is needed; iget() ensures it. */
	}

	ii->i_flags = nilfs_mask_flags(
		mode, NILFS_I(dir)->i_flags & NILFS_FL_INHERITED);

	/* ii->i_file_acl = 0; */
	/* ii->i_dir_acl = 0; */
	ii->i_dir_start_lookup = 0;
	nilfs_set_inode_flags(inode);
	spin_lock(&nilfs->ns_next_gen_lock);
	inode->i_generation = nilfs->ns_next_generation++;
	spin_unlock(&nilfs->ns_next_gen_lock);
	if (nilfs_insert_inode_locked(inode, root, ino) < 0) {
		err = -EIO;
		goto failed_after_creation;
	}

	err = nilfs_init_acl(inode, dir);
	if (unlikely(err))
		/*
		 * Never occur.  When supporting nilfs_init_acl(),
		 * proper cancellation of above jobs should be considered.
		 */
		goto failed_after_creation;

	return inode;

 failed_after_creation:
	clear_nlink(inode);
	unlock_new_inode(inode);
	iput(inode);  /*
		       * raw_inode will be deleted through
		       * nilfs_evict_inode().
		       */
	goto failed;

 failed_ifile_create_inode:
	make_bad_inode(inode);
	iput(inode);
 failed:
	return ERR_PTR(err);
}

void nilfs_set_inode_flags(struct inode *inode)
{
	unsigned int flags = NILFS_I(inode)->i_flags;
	unsigned int new_fl = 0;

	if (flags & FS_SYNC_FL)
		new_fl |= S_SYNC;
	if (flags & FS_APPEND_FL)
		new_fl |= S_APPEND;
	if (flags & FS_IMMUTABLE_FL)
		new_fl |= S_IMMUTABLE;
	if (flags & FS_NOATIME_FL)
		new_fl |= S_NOATIME;
	if (flags & FS_DIRSYNC_FL)
		new_fl |= S_DIRSYNC;
	inode_set_flags(inode, new_fl, S_SYNC | S_APPEND | S_IMMUTABLE |
			S_NOATIME | S_DIRSYNC);
}
Exemplo n.º 4
0
struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
{
	struct super_block *sb = dir->i_sb;
	struct the_nilfs *nilfs = sb->s_fs_info;
	struct inode *inode;
	struct nilfs_inode_info *ii;
	struct nilfs_root *root;
	int err = -ENOMEM;
	ino_t ino;

	inode = new_inode(sb);
	if (unlikely(!inode))
		goto failed;

	mapping_set_gfp_mask(inode->i_mapping,
			     mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);

	root = NILFS_I(dir)->i_root;
	ii = NILFS_I(inode);
	ii->i_state = 1 << NILFS_I_NEW;
	ii->i_root = root;

	err = nilfs_ifile_create_inode(root->ifile, &ino, &ii->i_bh);
	if (unlikely(err))
		goto failed_ifile_create_inode;
	

	atomic_inc(&root->inodes_count);
	inode_init_owner(inode, dir, mode);
	inode->i_ino = ino;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;

	if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
		err = nilfs_bmap_read(ii->i_bmap, NULL);
		if (err < 0)
			goto failed_bmap;

		set_bit(NILFS_I_BMAP, &ii->i_state);
		
	}

	ii->i_flags = nilfs_mask_flags(
		mode, NILFS_I(dir)->i_flags & NILFS_FL_INHERITED);

	
	
	ii->i_dir_start_lookup = 0;
	nilfs_set_inode_flags(inode);
	spin_lock(&nilfs->ns_next_gen_lock);
	inode->i_generation = nilfs->ns_next_generation++;
	spin_unlock(&nilfs->ns_next_gen_lock);
	insert_inode_hash(inode);

	err = nilfs_init_acl(inode, dir);
	if (unlikely(err))
		goto failed_acl; 

	return inode;

 failed_acl:
 failed_bmap:
	clear_nlink(inode);
	iput(inode);  
	goto failed;

 failed_ifile_create_inode:
	make_bad_inode(inode);
	iput(inode);  
 failed:
	return ERR_PTR(err);
}