Loading...
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) International Business Machines Corp., 2000-2002
4 * Portions Copyright (C) Christoph Hellwig, 2001-2002
5 */
6
7#include <linux/mm.h>
8#include <linux/fs.h>
9#include <linux/posix_acl.h>
10#include <linux/quotaops.h>
11#include "jfs_incore.h"
12#include "jfs_inode.h"
13#include "jfs_dmap.h"
14#include "jfs_txnmgr.h"
15#include "jfs_xattr.h"
16#include "jfs_acl.h"
17#include "jfs_debug.h"
18
19int jfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
20{
21 struct inode *inode = file->f_mapping->host;
22 int rc = 0;
23
24 rc = file_write_and_wait_range(file, start, end);
25 if (rc)
26 return rc;
27
28 inode_lock(inode);
29 if (!(inode->i_state & I_DIRTY_ALL) ||
30 (datasync && !(inode->i_state & I_DIRTY_DATASYNC))) {
31 /* Make sure committed changes hit the disk */
32 jfs_flush_journal(JFS_SBI(inode->i_sb)->log, 1);
33 inode_unlock(inode);
34 return rc;
35 }
36
37 rc |= jfs_commit_inode(inode, 1);
38 inode_unlock(inode);
39
40 return rc ? -EIO : 0;
41}
42
43static int jfs_open(struct inode *inode, struct file *file)
44{
45 int rc;
46
47 if ((rc = dquot_file_open(inode, file)))
48 return rc;
49
50 /*
51 * We attempt to allow only one "active" file open per aggregate
52 * group. Otherwise, appending to files in parallel can cause
53 * fragmentation within the files.
54 *
55 * If the file is empty, it was probably just created and going
56 * to be written to. If it has a size, we'll hold off until the
57 * file is actually grown.
58 */
59 if (S_ISREG(inode->i_mode) && file->f_mode & FMODE_WRITE &&
60 (inode->i_size == 0)) {
61 struct jfs_inode_info *ji = JFS_IP(inode);
62 spin_lock_irq(&ji->ag_lock);
63 if (ji->active_ag == -1) {
64 struct jfs_sb_info *jfs_sb = JFS_SBI(inode->i_sb);
65 ji->active_ag = BLKTOAG(addressPXD(&ji->ixpxd), jfs_sb);
66 atomic_inc(&jfs_sb->bmap->db_active[ji->active_ag]);
67 }
68 spin_unlock_irq(&ji->ag_lock);
69 }
70
71 return 0;
72}
73static int jfs_release(struct inode *inode, struct file *file)
74{
75 struct jfs_inode_info *ji = JFS_IP(inode);
76
77 spin_lock_irq(&ji->ag_lock);
78 if (ji->active_ag != -1) {
79 struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;
80 atomic_dec(&bmap->db_active[ji->active_ag]);
81 ji->active_ag = -1;
82 }
83 spin_unlock_irq(&ji->ag_lock);
84
85 return 0;
86}
87
88int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
89{
90 struct inode *inode = d_inode(dentry);
91 int rc;
92
93 rc = setattr_prepare(dentry, iattr);
94 if (rc)
95 return rc;
96
97 if (is_quota_modification(inode, iattr)) {
98 rc = dquot_initialize(inode);
99 if (rc)
100 return rc;
101 }
102 if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
103 (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
104 rc = dquot_transfer(inode, iattr);
105 if (rc)
106 return rc;
107 }
108
109 if ((iattr->ia_valid & ATTR_SIZE) &&
110 iattr->ia_size != i_size_read(inode)) {
111 inode_dio_wait(inode);
112
113 rc = inode_newsize_ok(inode, iattr->ia_size);
114 if (rc)
115 return rc;
116
117 truncate_setsize(inode, iattr->ia_size);
118 jfs_truncate(inode);
119 }
120
121 setattr_copy(inode, iattr);
122 mark_inode_dirty(inode);
123
124 if (iattr->ia_valid & ATTR_MODE)
125 rc = posix_acl_chmod(inode, inode->i_mode);
126 return rc;
127}
128
129const struct inode_operations jfs_file_inode_operations = {
130 .listxattr = jfs_listxattr,
131 .setattr = jfs_setattr,
132#ifdef CONFIG_JFS_POSIX_ACL
133 .get_acl = jfs_get_acl,
134 .set_acl = jfs_set_acl,
135#endif
136};
137
138const struct file_operations jfs_file_operations = {
139 .open = jfs_open,
140 .llseek = generic_file_llseek,
141 .read_iter = generic_file_read_iter,
142 .write_iter = generic_file_write_iter,
143 .mmap = generic_file_mmap,
144 .splice_read = generic_file_splice_read,
145 .splice_write = iter_file_splice_write,
146 .fsync = jfs_fsync,
147 .release = jfs_release,
148 .unlocked_ioctl = jfs_ioctl,
149#ifdef CONFIG_COMPAT
150 .compat_ioctl = jfs_compat_ioctl,
151#endif
152};
1/*
2 * Copyright (C) International Business Machines Corp., 2000-2002
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/mm.h>
21#include <linux/fs.h>
22#include <linux/quotaops.h>
23#include "jfs_incore.h"
24#include "jfs_inode.h"
25#include "jfs_dmap.h"
26#include "jfs_txnmgr.h"
27#include "jfs_xattr.h"
28#include "jfs_acl.h"
29#include "jfs_debug.h"
30
31int jfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
32{
33 struct inode *inode = file->f_mapping->host;
34 int rc = 0;
35
36 rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
37 if (rc)
38 return rc;
39
40 mutex_lock(&inode->i_mutex);
41 if (!(inode->i_state & I_DIRTY) ||
42 (datasync && !(inode->i_state & I_DIRTY_DATASYNC))) {
43 /* Make sure committed changes hit the disk */
44 jfs_flush_journal(JFS_SBI(inode->i_sb)->log, 1);
45 mutex_unlock(&inode->i_mutex);
46 return rc;
47 }
48
49 rc |= jfs_commit_inode(inode, 1);
50 mutex_unlock(&inode->i_mutex);
51
52 return rc ? -EIO : 0;
53}
54
55static int jfs_open(struct inode *inode, struct file *file)
56{
57 int rc;
58
59 if ((rc = dquot_file_open(inode, file)))
60 return rc;
61
62 /*
63 * We attempt to allow only one "active" file open per aggregate
64 * group. Otherwise, appending to files in parallel can cause
65 * fragmentation within the files.
66 *
67 * If the file is empty, it was probably just created and going
68 * to be written to. If it has a size, we'll hold off until the
69 * file is actually grown.
70 */
71 if (S_ISREG(inode->i_mode) && file->f_mode & FMODE_WRITE &&
72 (inode->i_size == 0)) {
73 struct jfs_inode_info *ji = JFS_IP(inode);
74 spin_lock_irq(&ji->ag_lock);
75 if (ji->active_ag == -1) {
76 struct jfs_sb_info *jfs_sb = JFS_SBI(inode->i_sb);
77 ji->active_ag = BLKTOAG(addressPXD(&ji->ixpxd), jfs_sb);
78 atomic_inc( &jfs_sb->bmap->db_active[ji->active_ag]);
79 }
80 spin_unlock_irq(&ji->ag_lock);
81 }
82
83 return 0;
84}
85static int jfs_release(struct inode *inode, struct file *file)
86{
87 struct jfs_inode_info *ji = JFS_IP(inode);
88
89 spin_lock_irq(&ji->ag_lock);
90 if (ji->active_ag != -1) {
91 struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;
92 atomic_dec(&bmap->db_active[ji->active_ag]);
93 ji->active_ag = -1;
94 }
95 spin_unlock_irq(&ji->ag_lock);
96
97 return 0;
98}
99
100int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
101{
102 struct inode *inode = dentry->d_inode;
103 int rc;
104
105 rc = inode_change_ok(inode, iattr);
106 if (rc)
107 return rc;
108
109 if (is_quota_modification(inode, iattr))
110 dquot_initialize(inode);
111 if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
112 (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
113 rc = dquot_transfer(inode, iattr);
114 if (rc)
115 return rc;
116 }
117
118 if ((iattr->ia_valid & ATTR_SIZE) &&
119 iattr->ia_size != i_size_read(inode)) {
120 inode_dio_wait(inode);
121
122 rc = vmtruncate(inode, iattr->ia_size);
123 if (rc)
124 return rc;
125 }
126
127 setattr_copy(inode, iattr);
128 mark_inode_dirty(inode);
129
130 if (iattr->ia_valid & ATTR_MODE)
131 rc = jfs_acl_chmod(inode);
132 return rc;
133}
134
135const struct inode_operations jfs_file_inode_operations = {
136 .truncate = jfs_truncate,
137 .setxattr = jfs_setxattr,
138 .getxattr = jfs_getxattr,
139 .listxattr = jfs_listxattr,
140 .removexattr = jfs_removexattr,
141 .setattr = jfs_setattr,
142#ifdef CONFIG_JFS_POSIX_ACL
143 .get_acl = jfs_get_acl,
144#endif
145};
146
147const struct file_operations jfs_file_operations = {
148 .open = jfs_open,
149 .llseek = generic_file_llseek,
150 .write = do_sync_write,
151 .read = do_sync_read,
152 .aio_read = generic_file_aio_read,
153 .aio_write = generic_file_aio_write,
154 .mmap = generic_file_mmap,
155 .splice_read = generic_file_splice_read,
156 .splice_write = generic_file_splice_write,
157 .fsync = jfs_fsync,
158 .release = jfs_release,
159 .unlocked_ioctl = jfs_ioctl,
160#ifdef CONFIG_COMPAT
161 .compat_ioctl = jfs_compat_ioctl,
162#endif
163};