[linux-2.6-block.git] / fs / efs / file.c

/*
 * file.c
 *
 * Copyright (c) 1999 Al Smith
 *
 * Portions derived from work (c) 1995,1996 Christian Vogelgsang.
 */

#include <linux/buffer_head.h>
#include "efs.h"

int efs_get_block(struct inode *inode, sector_t iblock,
		  struct buffer_head *bh_result, int create)
{
	int error = -EROFS;
	long phys;

	if (create)
		return error;
	if (iblock >= inode->i_blocks) {
#ifdef DEBUG
		/*
		 * i have no idea why this happens as often as it does
		 */
		pr_warn("EFS: bmap(): block %d >= %ld (filesize %ld)\n",
			block,
			inode->i_blocks,
			inode->i_size);
#endif
		return 0;
	}
	phys = efs_map_block(inode, iblock);
	if (phys)
		map_bh(bh_result, inode->i_sb, phys);
	return 0;
}

int efs_bmap(struct inode *inode, efs_block_t block) {

	if (block < 0) {
		pr_warn("EFS: bmap(): block < 0\n");
		return 0;
	}

	/* are we about to read past the end of a file ? */
	if (!(block < inode->i_blocks)) {
#ifdef DEBUG
		/*
		 * i have no idea why this happens as often as it does
		 */
		pr_warn("EFS: bmap(): block %d >= %ld (filesize %ld)\n",
			block, inode->i_blocks, inode->i_size);
#endif
		return 0;
	}

	return efs_map_block(inode, block);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* file.c
	3	*
	4	* Copyright (c) 1999 Al Smith
	5	*
	6	* Portions derived from work (c) 1995,1996 Christian Vogelgsang.
	7	*/
	8
	9	#include <linux/buffer_head.h>
45254b4f	10	#include "efs.h"
1da177e4 LT	11
	12	int efs_get_block(struct inode *inode, sector_t iblock,
	13	struct buffer_head *bh_result, int create)
	14	{
	15	int error = -EROFS;
	16	long phys;
	17
	18	if (create)
	19	return error;
	20	if (iblock >= inode->i_blocks) {
	21	#ifdef DEBUG
	22	/*
	23	* i have no idea why this happens as often as it does
	24	*/
179b87fb	25	pr_warn("EFS: bmap(): block %d >= %ld (filesize %ld)\n",
1da177e4 LT	26	block,
	27	inode->i_blocks,
	28	inode->i_size);
	29	#endif
	30	return 0;
	31	}
	32	phys = efs_map_block(inode, iblock);
	33	if (phys)
	34	map_bh(bh_result, inode->i_sb, phys);
	35	return 0;
	36	}
	37
	38	int efs_bmap(struct inode *inode, efs_block_t block) {
	39
	40	if (block < 0) {
179b87fb	41	pr_warn("EFS: bmap(): block < 0\n");
1da177e4 LT	42	return 0;
	43	}
	44
	45	/* are we about to read past the end of a file ? */
	46	if (!(block < inode->i_blocks)) {
	47	#ifdef DEBUG
	48	/*
	49	* i have no idea why this happens as often as it does
	50	*/
179b87fb FF	51	pr_warn("EFS: bmap(): block %d >= %ld (filesize %ld)\n",
179b87fb FF	52	block, inode->i_blocks, inode->i_size);
1da177e4 LT	53	#endif
	54	return 0;
	55	}
	56
	57	return efs_map_block(inode, block);
	58	}