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
29void 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
48void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
49{
50	unsigned int flags = jfs_ip->vfs_inode.i_flags;
51
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;
64}
65
66/*
67 * NAME:	ialloc()
68 *
69 * FUNCTION:	Allocate a new inode
70 *
71 */
72struct inode *ialloc(struct inode *parent, umode_t mode)
73{
74	struct super_block *sb = parent->i_sb;
75	struct inode *inode;
76	struct jfs_inode_info *jfs_inode;
77	int rc;
78
79	inode = new_inode(sb);
80	if (!inode) {
81		jfs_warn("ialloc: new_inode returned NULL!");
82		rc = -ENOMEM;
83		goto fail;
84	}
85
86	jfs_inode = JFS_IP(inode);
87
88	rc = diAlloc(parent, S_ISDIR(mode), inode);
89	if (rc) {
90		jfs_warn("ialloc: diAlloc returned %d!", rc);
91		if (rc == -EIO)
92			make_bad_inode(inode);
93		goto fail_put;
94	}
95
96	if (insert_inode_locked(inode) < 0) {
97		rc = -EINVAL;
98		goto fail_put;
99	}
100
101	inode_init_owner(inode, parent, mode);
102	/*
103	 * New inodes need to save sane values on disk when
104	 * uid & gid mount options are used
105	 */
106	jfs_inode->saved_uid = inode->i_uid;
107	jfs_inode->saved_gid = inode->i_gid;
108
109	/*
110	 * Allocate inode to quota.
111	 */
112	rc = dquot_initialize(inode);
113	if (rc)
114		goto fail_drop;
115	rc = dquot_alloc_inode(inode);
116	if (rc)
117		goto fail_drop;
118
119	/* inherit flags from parent */
120	jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
121
122	if (S_ISDIR(mode)) {
123		jfs_inode->mode2 |= IDIRECTORY;
124		jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
125	}
126	else {
127		jfs_inode->mode2 |= INLINEEA | ISPARSE;
128		if (S_ISLNK(mode))
129			jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
130	}
131	jfs_inode->mode2 |= inode->i_mode;
132
133	inode->i_blocks = 0;
134	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
135	jfs_inode->otime = inode->i_ctime.tv_sec;
136	inode->i_generation = JFS_SBI(sb)->gengen++;
137
138	jfs_inode->cflag = 0;
139
140	/* Zero remaining fields */
141	memset(&jfs_inode->acl, 0, sizeof(dxd_t));
142	memset(&jfs_inode->ea, 0, sizeof(dxd_t));
143	jfs_inode->next_index = 0;
144	jfs_inode->acltype = 0;
145	jfs_inode->btorder = 0;
146	jfs_inode->btindex = 0;
147	jfs_inode->bxflag = 0;
148	jfs_inode->blid = 0;
149	jfs_inode->atlhead = 0;
150	jfs_inode->atltail = 0;
151	jfs_inode->xtlid = 0;
152	jfs_set_inode_flags(inode);
153
154	jfs_info("ialloc returns inode = 0x%p\n", inode);
155
156	return inode;
157
158fail_drop:
159	dquot_drop(inode);
160	inode->i_flags |= S_NOQUOTA;
161	clear_nlink(inode);
162	unlock_new_inode(inode);
163fail_put:
164	iput(inode);
165fail:
166	return ERR_PTR(rc);
167}
168