[NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution
[linux-2.6] / fs / efs / file.c
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>
10 #include <linux/efs_fs.h>
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                  */
25                 printk(KERN_WARNING "EFS: bmap(): block %d >= %ld (filesize %ld)\n",
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) {
41                 printk(KERN_WARNING "EFS: bmap(): block < 0\n");
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                  */
51                 printk(KERN_WARNING "EFS: bmap(): block %d >= %ld (filesize %ld)\n",
52                         block,
53                         inode->i_blocks,
54                         inode->i_size);
55 #endif
56                 return 0;
57         }
58
59         return efs_map_block(inode, block);
60 }