[PATCH] compat_sys_vmsplice: one-off in UIO_MAXIOV check
[linux-2.6] / fs / ext2 / file.c
1 /*
2  *  linux/fs/ext2/file.c
3  *
4  * Copyright (C) 1992, 1993, 1994, 1995
5  * Remy Card (card@masi.ibp.fr)
6  * Laboratoire MASI - Institut Blaise Pascal
7  * Universite Pierre et Marie Curie (Paris VI)
8  *
9  *  from
10  *
11  *  linux/fs/minix/file.c
12  *
13  *  Copyright (C) 1991, 1992  Linus Torvalds
14  *
15  *  ext2 fs regular file handling primitives
16  *
17  *  64-bit file support on 64-bit platforms by Jakub Jelinek
18  *      (jj@sunsite.ms.mff.cuni.cz)
19  */
20
21 #include <linux/time.h>
22 #include "ext2.h"
23 #include "xattr.h"
24 #include "acl.h"
25
26 /*
27  * Called when an inode is released. Note that this is different
28  * from ext2_open_file: open gets called at every open, but release
29  * gets called only when /all/ the files are closed.
30  */
31 static int ext2_release_file (struct inode * inode, struct file * filp)
32 {
33         if (filp->f_mode & FMODE_WRITE)
34                 ext2_discard_prealloc (inode);
35         return 0;
36 }
37
38 /*
39  * We have mostly NULL's here: the current defaults are ok for
40  * the ext2 filesystem.
41  */
42 const struct file_operations ext2_file_operations = {
43         .llseek         = generic_file_llseek,
44         .read           = generic_file_read,
45         .write          = generic_file_write,
46         .aio_read       = generic_file_aio_read,
47         .aio_write      = generic_file_aio_write,
48         .ioctl          = ext2_ioctl,
49         .mmap           = generic_file_mmap,
50         .open           = generic_file_open,
51         .release        = ext2_release_file,
52         .fsync          = ext2_sync_file,
53         .readv          = generic_file_readv,
54         .writev         = generic_file_writev,
55         .sendfile       = generic_file_sendfile,
56         .splice_read    = generic_file_splice_read,
57         .splice_write   = generic_file_splice_write,
58 };
59
60 #ifdef CONFIG_EXT2_FS_XIP
61 const struct file_operations ext2_xip_file_operations = {
62         .llseek         = generic_file_llseek,
63         .read           = xip_file_read,
64         .write          = xip_file_write,
65         .ioctl          = ext2_ioctl,
66         .mmap           = xip_file_mmap,
67         .open           = generic_file_open,
68         .release        = ext2_release_file,
69         .fsync          = ext2_sync_file,
70         .sendfile       = xip_file_sendfile,
71 };
72 #endif
73
74 struct inode_operations ext2_file_inode_operations = {
75         .truncate       = ext2_truncate,
76 #ifdef CONFIG_EXT2_FS_XATTR
77         .setxattr       = generic_setxattr,
78         .getxattr       = generic_getxattr,
79         .listxattr      = ext2_listxattr,
80         .removexattr    = generic_removexattr,
81 #endif
82         .setattr        = ext2_setattr,
83         .permission     = ext2_permission,
84 };