/***** Make a directory */ int msdos_mkdir(struct inode *dir,struct dentry *dentry,int mode) { struct super_block *sb = dir->i_sb; struct buffer_head *bh; struct msdos_dir_entry *de; struct inode *inode; int res,is_hid; char msdos_name[MSDOS_NAME]; loff_t ino; res = msdos_format_name(dentry->d_name.name,dentry->d_name.len, msdos_name, &MSDOS_SB(sb)->options); if (res < 0) return res; is_hid = (dentry->d_name.name[0]=='.') && (msdos_name[0]!='.'); /* foo vs .foo situation */ if (fat_scan(dir,msdos_name,&bh,&de,&ino) >= 0) goto out_exist; res = msdos_add_entry(dir, msdos_name, &bh, &de, &ino, 1, is_hid); if (res) goto out_unlock; inode = fat_build_inode(dir->i_sb, de, ino, &res); if (!inode) { fat_brelse(sb, bh); goto out_unlock; } res = 0; dir->i_nlink++; inode->i_nlink = 2; /* no need to mark them dirty */ res = fat_new_dir(inode, dir, 0); if (res) goto mkdir_error; fat_brelse(sb, bh); d_instantiate(dentry, inode); res = 0; out_unlock: return res; mkdir_error: printk(KERN_WARNING "msdos_mkdir: error=%d, attempting cleanup\n", res); inode->i_nlink = 0; inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME; dir->i_nlink--; mark_inode_dirty(inode); mark_inode_dirty(dir); de->name[0] = DELETED_FLAG; fat_mark_buffer_dirty(sb, bh); fat_brelse(sb, bh); fat_detach(inode); iput(inode); goto out_unlock; out_exist: fat_brelse(sb, bh); res = -EINVAL; goto out_unlock; }
/***** Make a directory */ int msdos_mkdir(struct inode *dir,struct dentry *dentry,int mode) { struct super_block *sb = dir->i_sb; struct buffer_head *bh; struct msdos_dir_entry *de; struct inode *inode; int res,is_hid; unsigned char msdos_name[MSDOS_NAME]; loff_t i_pos; lock_kernel(); res = msdos_format_name(dentry->d_name.name,dentry->d_name.len, msdos_name, &MSDOS_SB(sb)->options); if (res < 0) { unlock_kernel(); return res; } is_hid = (dentry->d_name.name[0]=='.') && (msdos_name[0]!='.'); /* foo vs .foo situation */ if (fat_scan(dir, msdos_name, &bh, &de, &i_pos) >= 0) goto out_exist; res = msdos_add_entry(dir, msdos_name, &bh, &de, &i_pos, 1, is_hid); if (res) goto out_unlock; inode = fat_build_inode(dir->i_sb, de, i_pos, &res); if (!inode) { brelse(bh); goto out_unlock; } res = 0; dir->i_nlink++; inode->i_nlink = 2; /* no need to mark them dirty */ res = fat_new_dir(inode, dir, 0); if (res) goto mkdir_error; brelse(bh); d_instantiate(dentry, inode); res = 0; out_unlock: unlock_kernel(); return res; mkdir_error: inode->i_nlink = 0; inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME; dir->i_nlink--; mark_inode_dirty(inode); mark_inode_dirty(dir); de->name[0] = DELETED_FLAG; mark_buffer_dirty(bh); brelse(bh); fat_detach(inode); iput(inode); goto out_unlock; out_exist: brelse(bh); res = -EINVAL; goto out_unlock; }