1 /*
2 * Copyright (C) International Business Machines Corp., 2000-2004
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19 #include <linux/fs.h>
20 #include <linux/quotaops.h>
21 #include "jfs_incore.h"
22 #include "jfs_inode.h"
23 #include "jfs_filsys.h"
24 #include "jfs_imap.h"
25 #include "jfs_dinode.h"
26 #include "jfs_debug.h"
27
28
jfs_set_inode_flags(struct inode * inode)29 void jfs_set_inode_flags(struct inode *inode)
30 {
31 unsigned int flags = JFS_IP(inode)->mode2;
32 unsigned int new_fl = 0;
33
34 if (flags & JFS_IMMUTABLE_FL)
35 new_fl |= S_IMMUTABLE;
36 if (flags & JFS_APPEND_FL)
37 new_fl |= S_APPEND;
38 if (flags & JFS_NOATIME_FL)
39 new_fl |= S_NOATIME;
40 if (flags & JFS_DIRSYNC_FL)
41 new_fl |= S_DIRSYNC;
42 if (flags & JFS_SYNC_FL)
43 new_fl |= S_SYNC;
44 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
45 S_DIRSYNC | S_SYNC);
46 }
47
48 /*
49 * NAME: ialloc()
50 *
51 * FUNCTION: Allocate a new inode
52 *
53 */
ialloc(struct inode * parent,umode_t mode)54 struct inode *ialloc(struct inode *parent, umode_t mode)
55 {
56 struct super_block *sb = parent->i_sb;
57 struct inode *inode;
58 struct jfs_inode_info *jfs_inode;
59 int rc;
60
61 inode = new_inode(sb);
62 if (!inode) {
63 jfs_warn("ialloc: new_inode returned NULL!");
64 return ERR_PTR(-ENOMEM);
65 }
66
67 jfs_inode = JFS_IP(inode);
68
69 rc = diAlloc(parent, S_ISDIR(mode), inode);
70 if (rc) {
71 jfs_warn("ialloc: diAlloc returned %d!", rc);
72 goto fail_put;
73 }
74
75 if (insert_inode_locked(inode) < 0) {
76 rc = -EINVAL;
77 goto fail_put;
78 }
79
80 inode_init_owner(inode, parent, mode);
81 /*
82 * New inodes need to save sane values on disk when
83 * uid & gid mount options are used
84 */
85 jfs_inode->saved_uid = inode->i_uid;
86 jfs_inode->saved_gid = inode->i_gid;
87
88 /*
89 * Allocate inode to quota.
90 */
91 rc = dquot_initialize(inode);
92 if (rc)
93 goto fail_drop;
94 rc = dquot_alloc_inode(inode);
95 if (rc)
96 goto fail_drop;
97
98 /* inherit flags from parent */
99 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
100
101 if (S_ISDIR(mode)) {
102 jfs_inode->mode2 |= IDIRECTORY;
103 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
104 }
105 else {
106 jfs_inode->mode2 |= INLINEEA | ISPARSE;
107 if (S_ISLNK(mode))
108 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
109 }
110 jfs_inode->mode2 |= inode->i_mode;
111
112 inode->i_blocks = 0;
113 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
114 jfs_inode->otime = inode->i_ctime.tv_sec;
115 inode->i_generation = JFS_SBI(sb)->gengen++;
116
117 jfs_inode->cflag = 0;
118
119 /* Zero remaining fields */
120 memset(&jfs_inode->acl, 0, sizeof(dxd_t));
121 memset(&jfs_inode->ea, 0, sizeof(dxd_t));
122 jfs_inode->next_index = 0;
123 jfs_inode->acltype = 0;
124 jfs_inode->btorder = 0;
125 jfs_inode->btindex = 0;
126 jfs_inode->bxflag = 0;
127 jfs_inode->blid = 0;
128 jfs_inode->atlhead = 0;
129 jfs_inode->atltail = 0;
130 jfs_inode->xtlid = 0;
131 jfs_set_inode_flags(inode);
132
133 jfs_info("ialloc returns inode = 0x%p", inode);
134
135 return inode;
136
137 fail_drop:
138 dquot_drop(inode);
139 inode->i_flags |= S_NOQUOTA;
140 clear_nlink(inode);
141 discard_new_inode(inode);
142 return ERR_PTR(rc);
143
144 fail_put:
145 iput(inode);
146 return ERR_PTR(rc);
147 }
148