blob: 3b8f650de22ce2b917d97d3c0b22717726d593fa [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/ext3/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 * ext3 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
Christoph Hellwig871a2932010-03-03 09:05:07 -050021#include <linux/quotaops.h>
Al Viro4613ad12012-03-29 22:30:07 -040022#include "ext3.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include "xattr.h"
24#include "acl.h"
25
26/*
27 * Called when an inode is released. Note that this is different
28 * from ext3_file_open: open gets called at every open, but release
29 * gets called only when /all/ the files are closed.
30 */
31static int ext3_release_file (struct inode * inode, struct file * filp)
32{
Jan Kara9df93932010-01-06 21:58:48 +010033 if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) {
Theodore Ts'of7ab34e2009-04-03 01:34:35 -040034 filemap_flush(inode->i_mapping);
Jan Kara9df93932010-01-06 21:58:48 +010035 ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE);
Theodore Ts'of7ab34e2009-04-03 01:34:35 -040036 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 /* if we are the last writer on the inode, drop the block reservation */
38 if ((filp->f_mode & FMODE_WRITE) &&
39 (atomic_read(&inode->i_writecount) == 1))
Mingming Cao21fe3472005-06-28 20:45:16 -070040 {
Arjan van de Ven97461512006-03-23 03:00:42 -080041 mutex_lock(&EXT3_I(inode)->truncate_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 ext3_discard_reservation(inode);
Arjan van de Ven97461512006-03-23 03:00:42 -080043 mutex_unlock(&EXT3_I(inode)->truncate_mutex);
Mingming Cao21fe3472005-06-28 20:45:16 -070044 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 if (is_dx(inode) && filp->private_data)
46 ext3_htree_free_dir_info(filp->private_data);
47
48 return 0;
49}
50
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -080051const struct file_operations ext3_file_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 .llseek = generic_file_llseek,
Al Viroaad4f8b2014-04-02 14:33:16 -040053 .read_iter = generic_file_read_iter,
Al Viro81742022014-04-03 03:17:43 -040054 .write_iter = generic_file_write_iter,
Cyrus Massoumi039fd8c2009-04-02 16:57:12 -070055 .unlocked_ioctl = ext3_ioctl,
David Howells52a700c2006-08-29 19:06:23 +010056#ifdef CONFIG_COMPAT
57 .compat_ioctl = ext3_compat_ioctl,
58#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 .mmap = generic_file_mmap,
Christoph Hellwig907f4552010-03-03 09:05:06 -050060 .open = dquot_file_open,
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 .release = ext3_release_file,
62 .fsync = ext3_sync_file,
Jens Axboe5274f052006-03-30 15:15:30 +020063 .splice_read = generic_file_splice_read,
Al Viro8d020762014-04-05 04:27:08 -040064 .splice_write = iter_file_splice_write,
Linus Torvalds1da177e2005-04-16 15:20:36 -070065};
66
Arjan van de Ven754661f2007-02-12 00:55:38 -080067const struct inode_operations ext3_file_inode_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 .setattr = ext3_setattr,
69#ifdef CONFIG_EXT3_FS_XATTR
70 .setxattr = generic_setxattr,
71 .getxattr = generic_getxattr,
72 .listxattr = ext3_listxattr,
73 .removexattr = generic_removexattr,
74#endif
Christoph Hellwig4e34e712011-07-23 17:37:31 +020075 .get_acl = ext3_get_acl,
Christoph Hellwig64e178a2013-12-20 05:16:44 -080076 .set_acl = ext3_set_acl,
Josef Bacik68c9d702008-10-03 17:32:43 -040077 .fiemap = ext3_fiemap,
Linus Torvalds1da177e2005-04-16 15:20:36 -070078};
79