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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 filp is released. This happens when all file descriptors
28 * for a single struct file are closed. Note that different open() calls
29 * for the same file yield different struct file structures.
30 */
31static int ext2_release_file (struct inode * inode, struct file * filp)
32{
33 if (filp->f_mode & FMODE_WRITE) {
34 mutex_lock(&EXT2_I(inode)->truncate_mutex);
35 ext2_discard_reservation(inode);
36 mutex_unlock(&EXT2_I(inode)->truncate_mutex);
37 }
38 return 0;
39}
40
41/*
42 * We have mostly NULL's here: the current defaults are ok for
43 * the ext2 filesystem.
44 */
45const struct file_operations ext2_file_operations = {
46 .llseek = generic_file_llseek,
47 .read = do_sync_read,
48 .write = do_sync_write,
49 .aio_read = generic_file_aio_read,
50 .aio_write = generic_file_aio_write,
51 .unlocked_ioctl = ext2_ioctl,
52#ifdef CONFIG_COMPAT
53 .compat_ioctl = ext2_compat_ioctl,
54#endif
55 .mmap = generic_file_mmap,
56 .open = generic_file_open,
57 .release = ext2_release_file,
58 .fsync = ext2_sync_file,
59 .splice_read = generic_file_splice_read,
60 .splice_write = generic_file_splice_write,
61};
62
63#ifdef CONFIG_EXT2_FS_XIP
64const struct file_operations ext2_xip_file_operations = {
65 .llseek = generic_file_llseek,
66 .read = xip_file_read,
67 .write = xip_file_write,
68 .unlocked_ioctl = ext2_ioctl,
69#ifdef CONFIG_COMPAT
70 .compat_ioctl = ext2_compat_ioctl,
71#endif
72 .mmap = xip_file_mmap,
73 .open = generic_file_open,
74 .release = ext2_release_file,
75 .fsync = ext2_sync_file,
76};
77#endif
78
79const struct inode_operations ext2_file_inode_operations = {
80 .truncate = ext2_truncate,
81#ifdef CONFIG_EXT2_FS_XATTR
82 .setxattr = generic_setxattr,
83 .getxattr = generic_getxattr,
84 .listxattr = ext2_listxattr,
85 .removexattr = generic_removexattr,
86#endif
87 .setattr = ext2_setattr,
88 .permission = ext2_permission,
89};