static int devpts_remount(struct super_block * sb, int * flags, char * data)
{
struct devpts_sb_info *sbi = sb->u.generic_sbp;
int res = devpts_parse_options(data,sbi);
if (res) {
printk("devpts: called with bogus options\n");
return -EINVAL;
}
return 0;
}
struct super_block *devpts_read_super(struct super_block *s, void *data,
int silent)
{
struct inode * inode;
struct devpts_sb_info *sbi;
sbi = (struct devpts_sb_info *) kmalloc(sizeof(struct devpts_sb_info), GFP_KERNEL);
if ( !sbi )
goto fail;
sbi->magic = DEVPTS_SBI_MAGIC;
sbi->max_ptys = unix98_max_ptys;
sbi->inodes = kmalloc(sizeof(struct inode *) * sbi->max_ptys, GFP_KERNEL);
if ( !sbi->inodes )
goto fail_free;
memset(sbi->inodes, 0, sizeof(struct inode *) * sbi->max_ptys);
if ( devpts_parse_options(data,sbi) && !silent) {
printk("devpts: called with bogus options\n");
goto fail_inode;
}
inode = new_inode(s);
if (!inode)
goto fail_inode;
inode->i_ino = 1;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
inode->i_blocks = 0;
inode->i_blksize = 1024;
inode->i_uid = inode->i_gid = 0;
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
inode->i_op = &devpts_root_inode_operations;
inode->i_fop = &devpts_root_operations;
inode->i_nlink = 2;
s->u.generic_sbp = (void *) sbi;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
s->s_magic = DEVPTS_SUPER_MAGIC;
s->s_op = &devpts_sops;
s->s_root = d_alloc_root(inode);
if (s->s_root)
return s;
printk("devpts: get root dentry failed\n");
iput(inode);
fail_inode:
kfree(sbi->inodes);
fail_free:
kfree(sbi);
fail:
return NULL;
}