예제 #1
0
static int sysv_symlink(struct inode * dir, struct dentry * dentry,
                        const char * symname)
{
    int err = -ENAMETOOLONG;
    int l = strlen(symname)+1;
    struct inode * inode;

    if (l > dir->i_sb->s_blocksize)
        goto out;

    inode = sysv_new_inode(dir, S_IFLNK|0777);
    err = PTR_ERR(inode);
    if (IS_ERR(inode))
        goto out;

    sysv_set_inode(inode, 0);
    err = page_symlink(inode, symname, l);
    if (err)
        goto out_fail;

    mark_inode_dirty(inode);
    err = add_nondir(dentry, inode);
out:
    return err;

out_fail:
    inode_dec_link_count(inode);
    iput(inode);
    goto out;
}
예제 #2
0
파일: namei.c 프로젝트: dmgerman/original
static int sysv_mknod(struct inode * dir, struct dentry * dentry, int mode, int rdev)
{
	int error;
	struct inode * inode;
	struct buffer_head * bh;
	struct sysv_dir_entry * de;

	bh = sysv_find_entry(dir, dentry->d_name.name,
			     dentry->d_name.len, &de);
	if (bh) {
		brelse(bh);
		return -EEXIST;
	}
	inode = sysv_new_inode(dir);
	if (!inode)
		return -ENOSPC;
	inode->i_uid = current->fsuid;
	init_special_inode(inode, mode, rdev);
	mark_inode_dirty(inode);
	error = sysv_add_entry(dir, dentry->d_name.name, 
			       dentry->d_name.len, &bh, &de);
	if (error) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		return error;
	}
	de->inode = inode->i_ino;
	mark_buffer_dirty(bh);
	brelse(bh);
	d_instantiate(dentry, inode);
	return 0;
}
예제 #3
0
파일: namei.c 프로젝트: dmgerman/original
static int sysv_create(struct inode * dir, struct dentry * dentry, int mode)
{
	int error;
	struct inode * inode;
	struct buffer_head * bh;
	struct sysv_dir_entry * de;

	inode = sysv_new_inode(dir);
	if (!inode) 
		return -ENOSPC;
	inode->i_op = &sysv_file_inode_operations;
	inode->i_fop = &sysv_file_operations;
	inode->i_mapping->a_ops = &sysv_aops;
	inode->i_mode = mode;
	mark_inode_dirty(inode);
	error = sysv_add_entry(dir, dentry->d_name.name,
			       dentry->d_name.len, &bh, &de);
	if (error) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		return error;
	}
	de->inode = inode->i_ino;
	mark_buffer_dirty(bh);
	brelse(bh);
	d_instantiate(dentry, inode);
	return 0;
}
예제 #4
0
int sysv_symlink(struct inode * dir, struct dentry * dentry, 
		 const char * symname)
{
	struct sysv_dir_entry * de;
	struct inode * inode;
	struct buffer_head * name_block;
	char * name_block_data;
	struct super_block * sb;
	int i;
	char c;
	struct buffer_head * bh;

	if (!(inode = sysv_new_inode(dir)))
		return -ENOSPC;

	inode->i_mode = S_IFLNK | 0777;
	inode->i_op = &sysv_symlink_inode_operations;
	name_block = sysv_file_bread(inode, 0, 1);
	if (!name_block) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		return -ENOSPC;
	}
	sb = inode->i_sb;
	name_block_data = name_block->b_data;
	i = 0;
	while (i < sb->sv_block_size_1 && (c = *(symname++)))
		name_block_data[i++] = c;
	name_block_data[i] = 0;
	mark_buffer_dirty(name_block, 1);
	brelse(name_block);
	inode->i_size = i;
	mark_inode_dirty(inode);
	bh = sysv_find_entry(dir, dentry->d_name.name,
                             dentry->d_name.len, &de);
	if (bh) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		brelse(bh);
		return -EEXIST;
	}
	i = sysv_add_entry(dir, dentry->d_name.name,
                           dentry->d_name.len, &bh, &de);
	if (i) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		return i;
	}
	de->inode = inode->i_ino;
	mark_buffer_dirty(bh, 1);
	brelse(bh);
        d_instantiate(dentry, inode);
	return 0;
}
예제 #5
0
int sysv_mkdir(struct inode * dir, struct dentry *dentry, int mode)
{
	int error;
	struct inode * inode;
	struct buffer_head * bh, *dir_block;
	struct sysv_dir_entry * de;

	if (!dir)
		return -EINVAL;
	bh = sysv_find_entry(dir, dentry->d_name.name,
                              dentry->d_name.len, &de);
	if (bh) {
		brelse(bh);
		return -EEXIST;
	}
	if (dir->i_nlink >= dir->i_sb->sv_link_max) 
		return -EMLINK;
	inode = sysv_new_inode(dir);
	if (!inode)
		return -ENOSPC;
	inode->i_op = &sysv_dir_inode_operations;
	inode->i_size = 2 * SYSV_DIRSIZE;
	dir_block = sysv_file_bread(inode,0,1);
	if (!dir_block) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		return -ENOSPC;
	}
	de = (struct sysv_dir_entry *) (dir_block->b_data + 0*SYSV_DIRSIZE);
	de->inode = inode->i_ino;
	strcpy(de->name,"."); /* rest of de->name is zero, see sysv_new_block */
	de = (struct sysv_dir_entry *) (dir_block->b_data + 1*SYSV_DIRSIZE);
	de->inode = dir->i_ino;
	strcpy(de->name,".."); /* rest of de->name is zero, see sysv_new_block */
	inode->i_nlink = 2;
	mark_buffer_dirty(dir_block, 1);
	brelse(dir_block);
	inode->i_mode = S_IFDIR | (mode & 0777 & ~current->fs->umask);
	if (dir->i_mode & S_ISGID)
		inode->i_mode |= S_ISGID;
	mark_inode_dirty(inode);
	error = sysv_add_entry(dir, dentry->d_name.name,
                               dentry->d_name.len, &bh, &de);
 	if (error) {
		inode->i_nlink=0;
		iput(inode);
		return error;
	}
	de->inode = inode->i_ino;
	mark_buffer_dirty(bh, 1);
	dir->i_nlink++;
	mark_inode_dirty(dir);
	brelse(bh);
        d_instantiate(dentry, inode);
 	return 0;
}
예제 #6
0
static int sysv_mknod(struct inode * dir, struct dentry * dentry, int mode, int rdev)
{
	struct inode * inode = sysv_new_inode(dir, mode);
	int err = PTR_ERR(inode);

	if (!IS_ERR(inode)) {
		sysv_set_inode(inode, rdev);
		mark_inode_dirty(inode);
		err = add_nondir(dentry, inode);
	}
	return err;
}
예제 #7
0
int sysv_mknod(struct inode * dir, struct dentry * dentry, int mode, int rdev)
{
	int error;
	struct inode * inode;
	struct buffer_head * bh;
	struct sysv_dir_entry * de;

	if (!dir)
		return -ENOENT;
	bh = sysv_find_entry(dir, dentry->d_name.name,
			     dentry->d_name.len, &de);
	if (bh) {
		brelse(bh);
		return -EEXIST;
	}
	inode = sysv_new_inode(dir);
	if (!inode)
		return -ENOSPC;
	inode->i_uid = current->fsuid;
	inode->i_mode = mode;
	inode->i_op = NULL;
	if (S_ISREG(inode->i_mode))
		inode->i_op = &sysv_file_inode_operations;
	else if (S_ISCHR(inode->i_mode))
		inode->i_op = &chrdev_inode_operations;
	else if (S_ISBLK(inode->i_mode))
		inode->i_op = &blkdev_inode_operations;
	else if (S_ISFIFO(inode->i_mode))
		init_fifo(inode);
	if (S_ISBLK(mode) || S_ISCHR(mode))
		inode->i_rdev = to_kdev_t(rdev);
	mark_inode_dirty(inode);
	error = sysv_add_entry(dir, dentry->d_name.name, 
			       dentry->d_name.len, &bh, &de);
	if (error) {
		inode->i_nlink--;
		mark_inode_dirty(inode);
		iput(inode);
		return error;
	}
	de->inode = inode->i_ino;
	mark_buffer_dirty(bh, 1);
	brelse(bh);
	d_instantiate(dentry, inode);
	return 0;
}
예제 #8
0
파일: namei.c 프로젝트: 19Dan01/linux
static int sysv_mknod(struct inode * dir, struct dentry * dentry, umode_t mode, dev_t rdev)
{
	struct inode * inode;
	int err;

	if (!old_valid_dev(rdev))
		return -EINVAL;

	inode = sysv_new_inode(dir, mode);
	err = PTR_ERR(inode);

	if (!IS_ERR(inode)) {
		sysv_set_inode(inode, rdev);
		mark_inode_dirty(inode);
		err = add_nondir(dentry, inode);
	}
	return err;
}
예제 #9
0
파일: namei.c 프로젝트: dmgerman/original
static int sysv_symlink(struct inode * dir, struct dentry * dentry, 
		 const char * symname)
{
	struct inode * inode;
	struct sysv_dir_entry * de;
	struct buffer_head * bh;
	int err;
	int l;

	err = -ENAMETOOLONG;
	l = strlen(symname)+1;
	if (l > dir->i_sb->sv_block_size_1)
		goto out;
	err = -ENOSPC;
	if (!(inode = sysv_new_inode(dir)))
		goto out;

	inode->i_mode = S_IFLNK | 0777;
	inode->i_op = &sysv_symlink_inode_operations;
	inode->i_mapping->a_ops = &sysv_aops;
	err = block_symlink(inode, symname, l);
	if (err)
		goto out_no_entry;
	mark_inode_dirty(inode);
	err = sysv_add_entry(dir, dentry->d_name.name,
                           dentry->d_name.len, &bh, &de);
	if (err)
		goto out_no_entry;
	de->inode = inode->i_ino;
	mark_buffer_dirty(bh);
	brelse(bh);
        d_instantiate(dentry, inode);
out:
	return err;
out_no_entry:
	inode->i_nlink--;
	mark_inode_dirty(inode);
	iput(inode);
	goto out;
}
예제 #10
0
static int sysv_mkdir(struct inode * dir, struct dentry *dentry, int mode)
{
    struct inode * inode;
    int err = -EMLINK;

    if (dir->i_nlink >= SYSV_SB(dir->i_sb)->s_link_max)
        goto out;
    inode_inc_link_count(dir);

    inode = sysv_new_inode(dir, S_IFDIR|mode);
    err = PTR_ERR(inode);
    if (IS_ERR(inode))
        goto out_dir;

    sysv_set_inode(inode, 0);

    inode_inc_link_count(inode);

    err = sysv_make_empty(inode, dir);
    if (err)
        goto out_fail;

    err = sysv_add_link(dentry, inode);
    if (err)
        goto out_fail;

    d_instantiate(dentry, inode);
out:
    return err;

out_fail:
    inode_dec_link_count(inode);
    inode_dec_link_count(inode);
    iput(inode);
out_dir:
    inode_dec_link_count(dir);
    goto out;
}