1 /*
2 * Copyright (c) International Business Machines Corp., 2000-2002
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 "jfs_incore.h"
21 #include "jfs_filsys.h"
22 #include "jfs_imap.h"
23 #include "jfs_dinode.h"
24 #include "jfs_debug.h"
25
26 kmem_cache_t *jfs_inode_cachep;
27
28 /*
29 * NAME: ialloc()
30 *
31 * FUNCTION: Allocate a new inode
32 *
33 */
ialloc(struct inode * parent,umode_t mode)34 struct inode *ialloc(struct inode *parent, umode_t mode)
35 {
36 struct super_block *sb = parent->i_sb;
37 struct inode *inode;
38 struct jfs_inode_info *jfs_inode;
39 int rc;
40
41 inode = new_inode(sb);
42 if (!inode) {
43 jfs_warn("ialloc: new_inode returned NULL!");
44 return inode;
45 }
46
47 rc = alloc_jfs_inode(inode);
48 if (rc) {
49 make_bad_inode(inode);
50 iput(inode);
51 return NULL;
52 }
53 jfs_inode = JFS_IP(inode);
54
55 rc = diAlloc(parent, S_ISDIR(mode), inode);
56 if (rc) {
57 jfs_warn("ialloc: diAlloc returned %d!", rc);
58 free_jfs_inode(inode);
59 make_bad_inode(inode);
60 iput(inode);
61 return NULL;
62 }
63
64 inode->i_uid = current->fsuid;
65 if (parent->i_mode & S_ISGID) {
66 inode->i_gid = parent->i_gid;
67 if (S_ISDIR(mode))
68 mode |= S_ISGID;
69 } else
70 inode->i_gid = current->fsgid;
71
72 inode->i_mode = mode;
73 if (S_ISDIR(mode))
74 jfs_inode->mode2 = IDIRECTORY | mode;
75 else
76 jfs_inode->mode2 = INLINEEA | ISPARSE | mode;
77 inode->i_blksize = sb->s_blocksize;
78 inode->i_blocks = 0;
79 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
80 jfs_inode->otime = inode->i_ctime;
81 inode->i_generation = JFS_SBI(sb)->gengen++;
82
83 jfs_inode->cflag = 0;
84 set_cflag(COMMIT_New, inode);
85
86 /* Zero remaining fields */
87 memset(&jfs_inode->acl, 0, sizeof(dxd_t));
88 memset(&jfs_inode->ea, 0, sizeof(dxd_t));
89 jfs_inode->next_index = 0;
90 jfs_inode->acltype = 0;
91 jfs_inode->btorder = 0;
92 jfs_inode->btindex = 0;
93 jfs_inode->bxflag = 0;
94 jfs_inode->blid = 0;
95 jfs_inode->atlhead = 0;
96 jfs_inode->atltail = 0;
97 jfs_inode->xtlid = 0;
98
99 jfs_info("ialloc returns inode = 0x%p\n", inode);
100
101 return inode;
102 }
103
104 /*
105 * NAME: alloc_jfs_inode()
106 *
107 * FUNCTION: Allocate jfs portion of in-memory inode
108 *
109 */
alloc_jfs_inode(struct inode * inode)110 int alloc_jfs_inode(struct inode *inode)
111 {
112 struct jfs_inode_info *jfs_inode;
113
114 jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS);
115 inode->u.generic_ip = jfs_inode;
116 if (!jfs_inode)
117 return -ENOSPC;
118 jfs_inode->inode = inode;
119
120 return 0;
121 }
122