Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/sysv/file.c |
| 3 | * |
| 4 | * minix/file.c |
| 5 | * Copyright (C) 1991, 1992 Linus Torvalds |
| 6 | * |
| 7 | * coh/file.c |
| 8 | * Copyright (C) 1993 Pascal Haible, Bruno Haible |
| 9 | * |
| 10 | * sysv/file.c |
| 11 | * Copyright (C) 1993 Bruno Haible |
| 12 | * |
| 13 | * SystemV/Coherent regular file handling primitives |
| 14 | */ |
| 15 | |
| 16 | #include "sysv.h" |
| 17 | |
| 18 | /* |
| 19 | * We have mostly NULLs here: the current defaults are OK for |
| 20 | * the coh filesystem. |
| 21 | */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 22 | const struct file_operations sysv_file_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | .llseek = generic_file_llseek, |
Badari Pulavarty | 543ade1 | 2006-09-30 23:28:48 -0700 | [diff] [blame] | 24 | .read = do_sync_read, |
| 25 | .aio_read = generic_file_aio_read, |
| 26 | .write = do_sync_write, |
| 27 | .aio_write = generic_file_aio_write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | .mmap = generic_file_mmap, |
| 29 | .fsync = sysv_sync_file, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 30 | .splice_read = generic_file_splice_read, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | }; |
| 32 | |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 33 | const struct inode_operations sysv_file_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | .truncate = sysv_truncate, |
| 35 | .getattr = sysv_getattr, |
| 36 | }; |
| 37 | |
| 38 | int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync) |
| 39 | { |
| 40 | struct inode *inode = dentry->d_inode; |
| 41 | int err; |
| 42 | |
| 43 | err = sync_mapping_buffers(inode->i_mapping); |
| 44 | if (!(inode->i_state & I_DIRTY)) |
| 45 | return err; |
| 46 | if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) |
| 47 | return err; |
| 48 | |
| 49 | err |= sysv_sync_inode(inode); |
| 50 | return err ? -EIO : 0; |
| 51 | } |