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Merge branch 'upstream/tidy-xen-mmu-2.6.39' of git://git.kernel.org/pub/scm/linux...
[mv-sheeva.git] / fs / sysv / file.c
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  */
22 const struct file_operations sysv_file_operations = {
23         .llseek         = generic_file_llseek,
24         .read           = do_sync_read,
25         .aio_read       = generic_file_aio_read,
26         .write          = do_sync_write,
27         .aio_write      = generic_file_aio_write,
28         .mmap           = generic_file_mmap,
29         .fsync          = generic_file_fsync,
30         .splice_read    = generic_file_splice_read,
31 };
32
33 static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
34 {
35         struct inode *inode = dentry->d_inode;
36         int error;
37
38         error = inode_change_ok(inode, attr);
39         if (error)
40                 return error;
41
42         if ((attr->ia_valid & ATTR_SIZE) &&
43             attr->ia_size != i_size_read(inode)) {
44                 error = vmtruncate(inode, attr->ia_size);
45                 if (error)
46                         return error;
47         }
48
49         setattr_copy(inode, attr);
50         mark_inode_dirty(inode);
51         return 0;
52 }
53
54 const struct inode_operations sysv_file_inode_operations = {
55         .truncate       = sysv_truncate,
56         .setattr        = sysv_setattr,
57         .getattr        = sysv_getattr,
58 };