xref: /openbmc/linux/fs/ext2/file.c (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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		= do_sync_read,
45 	.write		= do_sync_write,
46 	.aio_read	= generic_file_aio_read,
47 	.aio_write	= generic_file_aio_write,
48 	.ioctl		= ext2_ioctl,
49 #ifdef CONFIG_COMPAT
50 	.compat_ioctl	= ext2_compat_ioctl,
51 #endif
52 	.mmap		= generic_file_mmap,
53 	.open		= generic_file_open,
54 	.release	= ext2_release_file,
55 	.fsync		= ext2_sync_file,
56 	.sendfile	= generic_file_sendfile,
57 	.splice_read	= generic_file_splice_read,
58 	.splice_write	= generic_file_splice_write,
59 };
60 
61 #ifdef CONFIG_EXT2_FS_XIP
62 const struct file_operations ext2_xip_file_operations = {
63 	.llseek		= generic_file_llseek,
64 	.read		= xip_file_read,
65 	.write		= xip_file_write,
66 	.ioctl		= ext2_ioctl,
67 #ifdef CONFIG_COMPAT
68 	.compat_ioctl	= ext2_compat_ioctl,
69 #endif
70 	.mmap		= xip_file_mmap,
71 	.open		= generic_file_open,
72 	.release	= ext2_release_file,
73 	.fsync		= ext2_sync_file,
74 	.sendfile	= xip_file_sendfile,
75 };
76 #endif
77 
78 const struct inode_operations ext2_file_inode_operations = {
79 	.truncate	= ext2_truncate,
80 #ifdef CONFIG_EXT2_FS_XATTR
81 	.setxattr	= generic_setxattr,
82 	.getxattr	= generic_getxattr,
83 	.listxattr	= ext2_listxattr,
84 	.removexattr	= generic_removexattr,
85 #endif
86 	.setattr	= ext2_setattr,
87 	.permission	= ext2_permission,
88 };
89