Commit | Line | Data |
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1da177e4 | 1 | /* |
1868f4aa DK |
2 | * Copyright (C) International Business Machines Corp., 2000-2002 |
3 | * Portions Copyright (C) Christoph Hellwig, 2001-2002 | |
1da177e4 LT |
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 | |
63f83c9f | 7 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 8 | * (at your option) any later version. |
63f83c9f | 9 | * |
1da177e4 LT |
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 | |
63f83c9f | 16 | * along with this program; if not, write to the Free Software |
1da177e4 LT |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ | |
19 | ||
20 | #include <linux/fs.h> | |
759bfee6 | 21 | #include <linux/quotaops.h> |
1da177e4 | 22 | #include "jfs_incore.h" |
1868f4aa | 23 | #include "jfs_inode.h" |
1da177e4 LT |
24 | #include "jfs_dmap.h" |
25 | #include "jfs_txnmgr.h" | |
26 | #include "jfs_xattr.h" | |
27 | #include "jfs_acl.h" | |
28 | #include "jfs_debug.h" | |
29 | ||
1da177e4 LT |
30 | int jfs_fsync(struct file *file, struct dentry *dentry, int datasync) |
31 | { | |
32 | struct inode *inode = dentry->d_inode; | |
33 | int rc = 0; | |
34 | ||
35 | if (!(inode->i_state & I_DIRTY) || | |
36 | (datasync && !(inode->i_state & I_DIRTY_DATASYNC))) { | |
37 | /* Make sure committed changes hit the disk */ | |
38 | jfs_flush_journal(JFS_SBI(inode->i_sb)->log, 1); | |
39 | return rc; | |
40 | } | |
41 | ||
42 | rc |= jfs_commit_inode(inode, 1); | |
43 | ||
44 | return rc ? -EIO : 0; | |
45 | } | |
46 | ||
47 | static int jfs_open(struct inode *inode, struct file *file) | |
48 | { | |
49 | int rc; | |
50 | ||
907f4554 | 51 | if ((rc = dquot_file_open(inode, file))) |
1da177e4 LT |
52 | return rc; |
53 | ||
54 | /* | |
55 | * We attempt to allow only one "active" file open per aggregate | |
56 | * group. Otherwise, appending to files in parallel can cause | |
57 | * fragmentation within the files. | |
58 | * | |
59 | * If the file is empty, it was probably just created and going | |
60 | * to be written to. If it has a size, we'll hold off until the | |
61 | * file is actually grown. | |
62 | */ | |
63 | if (S_ISREG(inode->i_mode) && file->f_mode & FMODE_WRITE && | |
64 | (inode->i_size == 0)) { | |
65 | struct jfs_inode_info *ji = JFS_IP(inode); | |
66 | spin_lock_irq(&ji->ag_lock); | |
67 | if (ji->active_ag == -1) { | |
68 | ji->active_ag = ji->agno; | |
69 | atomic_inc( | |
70 | &JFS_SBI(inode->i_sb)->bmap->db_active[ji->agno]); | |
71 | } | |
72 | spin_unlock_irq(&ji->ag_lock); | |
73 | } | |
74 | ||
75 | return 0; | |
76 | } | |
77 | static int jfs_release(struct inode *inode, struct file *file) | |
78 | { | |
79 | struct jfs_inode_info *ji = JFS_IP(inode); | |
80 | ||
81 | spin_lock_irq(&ji->ag_lock); | |
82 | if (ji->active_ag != -1) { | |
83 | struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap; | |
84 | atomic_dec(&bmap->db_active[ji->active_ag]); | |
85 | ji->active_ag = -1; | |
86 | } | |
87 | spin_unlock_irq(&ji->ag_lock); | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
759bfee6 CH |
92 | int jfs_setattr(struct dentry *dentry, struct iattr *iattr) |
93 | { | |
94 | struct inode *inode = dentry->d_inode; | |
95 | int rc; | |
96 | ||
97 | rc = inode_change_ok(inode, iattr); | |
98 | if (rc) | |
99 | return rc; | |
100 | ||
907f4554 | 101 | if (iattr->ia_valid & ATTR_SIZE) |
871a2931 | 102 | dquot_initialize(inode); |
759bfee6 CH |
103 | if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) || |
104 | (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) { | |
b43fa828 CH |
105 | rc = dquot_transfer(inode, iattr); |
106 | if (rc) | |
107 | return rc; | |
759bfee6 CH |
108 | } |
109 | ||
110 | rc = inode_setattr(inode, iattr); | |
111 | ||
112 | if (!rc && (iattr->ia_valid & ATTR_MODE)) | |
113 | rc = jfs_acl_chmod(inode); | |
114 | ||
115 | return rc; | |
116 | } | |
117 | ||
92e1d5be | 118 | const struct inode_operations jfs_file_inode_operations = { |
1da177e4 LT |
119 | .truncate = jfs_truncate, |
120 | .setxattr = jfs_setxattr, | |
121 | .getxattr = jfs_getxattr, | |
122 | .listxattr = jfs_listxattr, | |
123 | .removexattr = jfs_removexattr, | |
1da177e4 | 124 | .setattr = jfs_setattr, |
759bfee6 | 125 | #ifdef CONFIG_JFS_POSIX_ACL |
18f4c644 | 126 | .check_acl = jfs_check_acl, |
1da177e4 LT |
127 | #endif |
128 | }; | |
129 | ||
4b6f5d20 | 130 | const struct file_operations jfs_file_operations = { |
1da177e4 LT |
131 | .open = jfs_open, |
132 | .llseek = generic_file_llseek, | |
543ade1f BP |
133 | .write = do_sync_write, |
134 | .read = do_sync_read, | |
1da177e4 LT |
135 | .aio_read = generic_file_aio_read, |
136 | .aio_write = generic_file_aio_write, | |
137 | .mmap = generic_file_mmap, | |
89f68225 DD |
138 | .splice_read = generic_file_splice_read, |
139 | .splice_write = generic_file_splice_write, | |
1da177e4 LT |
140 | .fsync = jfs_fsync, |
141 | .release = jfs_release, | |
baab81fa | 142 | .unlocked_ioctl = jfs_ioctl, |
ef1fc2f0 AK |
143 | #ifdef CONFIG_COMPAT |
144 | .compat_ioctl = jfs_compat_ioctl, | |
145 | #endif | |
1da177e4 | 146 | }; |