Commit | Line | Data |
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1da177e4 LT |
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> | |
48bde86d | 22 | #include <linux/pagemap.h> |
871a2931 | 23 | #include <linux/quotaops.h> |
1da177e4 LT |
24 | #include "ext2.h" |
25 | #include "xattr.h" | |
26 | #include "acl.h" | |
27 | ||
28 | /* | |
a6739af8 JK |
29 | * Called when filp is released. This happens when all file descriptors |
30 | * for a single struct file are closed. Note that different open() calls | |
31 | * for the same file yield different struct file structures. | |
1da177e4 LT |
32 | */ |
33 | static int ext2_release_file (struct inode * inode, struct file * filp) | |
34 | { | |
a686cd89 MB |
35 | if (filp->f_mode & FMODE_WRITE) { |
36 | mutex_lock(&EXT2_I(inode)->truncate_mutex); | |
37 | ext2_discard_reservation(inode); | |
38 | mutex_unlock(&EXT2_I(inode)->truncate_mutex); | |
39 | } | |
1da177e4 LT |
40 | return 0; |
41 | } | |
42 | ||
02c24a82 | 43 | int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
48bde86d JK |
44 | { |
45 | int ret; | |
7ea80859 | 46 | struct super_block *sb = file->f_mapping->host->i_sb; |
48bde86d JK |
47 | struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping; |
48 | ||
02c24a82 | 49 | ret = generic_file_fsync(file, start, end, datasync); |
48bde86d JK |
50 | if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) { |
51 | /* We don't really know where the IO error happened... */ | |
52 | ext2_error(sb, __func__, | |
53 | "detected IO error when writing metadata buffers"); | |
54 | ret = -EIO; | |
55 | } | |
56 | return ret; | |
57 | } | |
58 | ||
1da177e4 LT |
59 | /* |
60 | * We have mostly NULL's here: the current defaults are ok for | |
61 | * the ext2 filesystem. | |
62 | */ | |
4b6f5d20 | 63 | const struct file_operations ext2_file_operations = { |
1da177e4 | 64 | .llseek = generic_file_llseek, |
543ade1f BP |
65 | .read = do_sync_read, |
66 | .write = do_sync_write, | |
1da177e4 LT |
67 | .aio_read = generic_file_aio_read, |
68 | .aio_write = generic_file_aio_write, | |
14f9f7b2 | 69 | .unlocked_ioctl = ext2_ioctl, |
e322ff07 DH |
70 | #ifdef CONFIG_COMPAT |
71 | .compat_ioctl = ext2_compat_ioctl, | |
72 | #endif | |
1da177e4 | 73 | .mmap = generic_file_mmap, |
907f4554 | 74 | .open = dquot_file_open, |
1da177e4 | 75 | .release = ext2_release_file, |
48bde86d | 76 | .fsync = ext2_fsync, |
5274f052 JA |
77 | .splice_read = generic_file_splice_read, |
78 | .splice_write = generic_file_splice_write, | |
1da177e4 LT |
79 | }; |
80 | ||
6d79125b | 81 | #ifdef CONFIG_EXT2_FS_XIP |
4b6f5d20 | 82 | const struct file_operations ext2_xip_file_operations = { |
6d79125b | 83 | .llseek = generic_file_llseek, |
eb6fe0c3 CO |
84 | .read = xip_file_read, |
85 | .write = xip_file_write, | |
14f9f7b2 | 86 | .unlocked_ioctl = ext2_ioctl, |
e322ff07 DH |
87 | #ifdef CONFIG_COMPAT |
88 | .compat_ioctl = ext2_compat_ioctl, | |
89 | #endif | |
6d79125b | 90 | .mmap = xip_file_mmap, |
907f4554 | 91 | .open = dquot_file_open, |
6d79125b | 92 | .release = ext2_release_file, |
48bde86d | 93 | .fsync = ext2_fsync, |
6d79125b CO |
94 | }; |
95 | #endif | |
96 | ||
754661f1 | 97 | const struct inode_operations ext2_file_inode_operations = { |
1da177e4 LT |
98 | #ifdef CONFIG_EXT2_FS_XATTR |
99 | .setxattr = generic_setxattr, | |
100 | .getxattr = generic_getxattr, | |
101 | .listxattr = ext2_listxattr, | |
102 | .removexattr = generic_removexattr, | |
103 | #endif | |
104 | .setattr = ext2_setattr, | |
4e34e719 | 105 | .get_acl = ext2_get_acl, |
68c9d702 | 106 | .fiemap = ext2_fiemap, |
1da177e4 | 107 | }; |