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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 13:43:55 +08:00
linux-next/fs/efs/file.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

61 lines
1.2 KiB
C

/*
* file.c
*
* Copyright (c) 1999 Al Smith
*
* Portions derived from work (c) 1995,1996 Christian Vogelgsang.
*/
#include <linux/buffer_head.h>
#include <linux/efs_fs.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
*/
printk(KERN_WARNING "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) {
printk(KERN_WARNING "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
*/
printk(KERN_WARNING "EFS: bmap(): block %d >= %ld (filesize %ld)\n",
block,
inode->i_blocks,
inode->i_size);
#endif
return 0;
}
return efs_map_block(inode, block);
}