Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / fs / jfs / jfs_inode.c
blobed6574bee51a211ea1c46f82e04d01625308577b
1 /*
2 * Copyright (C) International Business Machines Corp., 2000-2004
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.
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.
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
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"
29 void jfs_set_inode_flags(struct inode *inode)
31 unsigned int flags = JFS_IP(inode)->mode2;
33 inode->i_flags &= ~(S_IMMUTABLE | S_APPEND |
34 S_NOATIME | S_DIRSYNC | S_SYNC);
36 if (flags & JFS_IMMUTABLE_FL)
37 inode->i_flags |= S_IMMUTABLE;
38 if (flags & JFS_APPEND_FL)
39 inode->i_flags |= S_APPEND;
40 if (flags & JFS_NOATIME_FL)
41 inode->i_flags |= S_NOATIME;
42 if (flags & JFS_DIRSYNC_FL)
43 inode->i_flags |= S_DIRSYNC;
44 if (flags & JFS_SYNC_FL)
45 inode->i_flags |= S_SYNC;
48 void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
50 unsigned int flags = jfs_ip->vfs_inode.i_flags;
52 jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
53 JFS_DIRSYNC_FL | JFS_SYNC_FL);
54 if (flags & S_IMMUTABLE)
55 jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
56 if (flags & S_APPEND)
57 jfs_ip->mode2 |= JFS_APPEND_FL;
58 if (flags & S_NOATIME)
59 jfs_ip->mode2 |= JFS_NOATIME_FL;
60 if (flags & S_DIRSYNC)
61 jfs_ip->mode2 |= JFS_DIRSYNC_FL;
62 if (flags & S_SYNC)
63 jfs_ip->mode2 |= JFS_SYNC_FL;
67 * NAME: ialloc()
69 * FUNCTION: Allocate a new inode
72 struct inode *ialloc(struct inode *parent, umode_t mode)
74 struct super_block *sb = parent->i_sb;
75 struct inode *inode;
76 struct jfs_inode_info *jfs_inode;
77 int rc;
79 inode = new_inode(sb);
80 if (!inode) {
81 jfs_warn("ialloc: new_inode returned NULL!");
82 return ERR_PTR(-ENOMEM);
85 jfs_inode = JFS_IP(inode);
87 rc = diAlloc(parent, S_ISDIR(mode), inode);
88 if (rc) {
89 jfs_warn("ialloc: diAlloc returned %d!", rc);
90 if (rc == -EIO)
91 make_bad_inode(inode);
92 iput(inode);
93 return ERR_PTR(rc);
96 inode->i_uid = current->fsuid;
97 if (parent->i_mode & S_ISGID) {
98 inode->i_gid = parent->i_gid;
99 if (S_ISDIR(mode))
100 mode |= S_ISGID;
101 } else
102 inode->i_gid = current->fsgid;
105 * New inodes need to save sane values on disk when
106 * uid & gid mount options are used
108 jfs_inode->saved_uid = inode->i_uid;
109 jfs_inode->saved_gid = inode->i_gid;
112 * Allocate inode to quota.
114 if (DQUOT_ALLOC_INODE(inode)) {
115 DQUOT_DROP(inode);
116 inode->i_flags |= S_NOQUOTA;
117 inode->i_nlink = 0;
118 iput(inode);
119 return ERR_PTR(-EDQUOT);
122 inode->i_mode = mode;
123 /* inherit flags from parent */
124 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
126 if (S_ISDIR(mode)) {
127 jfs_inode->mode2 |= IDIRECTORY;
128 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
130 else {
131 jfs_inode->mode2 |= INLINEEA | ISPARSE;
132 if (S_ISLNK(mode))
133 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
135 jfs_inode->mode2 |= mode;
137 inode->i_blocks = 0;
138 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
139 jfs_inode->otime = inode->i_ctime.tv_sec;
140 inode->i_generation = JFS_SBI(sb)->gengen++;
142 jfs_inode->cflag = 0;
144 /* Zero remaining fields */
145 memset(&jfs_inode->acl, 0, sizeof(dxd_t));
146 memset(&jfs_inode->ea, 0, sizeof(dxd_t));
147 jfs_inode->next_index = 0;
148 jfs_inode->acltype = 0;
149 jfs_inode->btorder = 0;
150 jfs_inode->btindex = 0;
151 jfs_inode->bxflag = 0;
152 jfs_inode->blid = 0;
153 jfs_inode->atlhead = 0;
154 jfs_inode->atltail = 0;
155 jfs_inode->xtlid = 0;
156 jfs_set_inode_flags(inode);
158 jfs_info("ialloc returns inode = 0x%p\n", inode);
160 return inode;