| 1,11 → 1,46 |
|---|
| /* Basic methods for reading blocks. */ |
| /* |
| * Copyright (c) 1987,1997, Prentice Hall |
| * All rights reserved. |
| * |
| * Redistribution and use of the MINIX operating system in source and |
| * binary forms, with or without modification, are permitted provided |
| * that the following conditions are met: |
| |
| /* Methods: |
| * init_block: Allocates memory for working block |
| * get_block: Returns requested block according its number |
| * read_block: Process reading of requested block |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| |
| * - Neither the name of Prentice Hall nor the names of the software |
| * authors or contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND |
| * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup FileSystemImpl |
| * @{ |
| */ |
| |
| /** |
| * @file block.c |
| * @brief Basic methods for reading blocks. |
| */ |
| |
| #include <stdio.h> |
| #include <async.h> |
| 15,9 → 50,11 |
|---|
| #include "super.h" |
| #include "../rd/rd.h" |
| |
| block_t* work_block; /**< A temporary variable for storing the working block */ |
| |
| block_t* work_block; |
| |
| /** |
| * Allocates memory for working block |
| */ |
| int init_block() |
| { |
| |
| 29,6 → 66,9 |
|---|
| return FALSE; |
| } |
| |
| /** |
| * Returns requested block according its number |
| */ |
| block_t *get_block(register block_num_t block_nr) |
| { |
| |
| 41,6 → 81,9 |
|---|
| return work_block; |
| } |
| |
| /** |
| * Return a block filled with zeroes |
| */ |
| block_t *get_zero_block() |
| { |
| |
| 50,6 → 93,9 |
|---|
| return work_block; |
| } |
| |
| /** |
| * Process reading of requested block |
| */ |
| void read_block(register block_t *bp) |
| { |
| |
| 74,3 → 120,7 |
|---|
| } |
| |
| |
| /** |
| * } |
| */ |
| |