xref: /openbmc/linux/fs/ext2/file.c (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
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 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 };
57 
58 #ifdef CONFIG_EXT2_FS_XIP
59 struct file_operations ext2_xip_file_operations = {
60 	.llseek		= generic_file_llseek,
61 	.read		= xip_file_read,
62 	.write		= xip_file_write,
63 	.ioctl		= ext2_ioctl,
64 	.mmap		= xip_file_mmap,
65 	.open		= generic_file_open,
66 	.release	= ext2_release_file,
67 	.fsync		= ext2_sync_file,
68 	.sendfile	= xip_file_sendfile,
69 };
70 #endif
71 
72 struct inode_operations ext2_file_inode_operations = {
73 	.truncate	= ext2_truncate,
74 #ifdef CONFIG_EXT2_FS_XATTR
75 	.setxattr	= generic_setxattr,
76 	.getxattr	= generic_getxattr,
77 	.listxattr	= ext2_listxattr,
78 	.removexattr	= generic_removexattr,
79 #endif
80 	.setattr	= ext2_setattr,
81 	.permission	= ext2_permission,
82 };
83