1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) International Business Machines Corp., 2000-2004
4 */
5
6 #include <linux/fs.h>
7 #include <linux/quotaops.h>
8 #include "jfs_incore.h"
9 #include "jfs_inode.h"
10 #include "jfs_filsys.h"
11 #include "jfs_imap.h"
12 #include "jfs_dinode.h"
13 #include "jfs_debug.h"
14
15
16 void jfs_set_inode_flags(struct inode *inode)
17 {
18 unsigned int flags = JFS_IP(inode)->mode2;
19 unsigned int new_fl = 0;
20
21 if (flags & JFS_IMMUTABLE_FL)
22 new_fl |= S_IMMUTABLE;
23 if (flags & JFS_APPEND_FL)
24 new_fl |= S_APPEND;
25 if (flags & JFS_NOATIME_FL)
26 new_fl |= S_NOATIME;
27 if (flags & JFS_DIRSYNC_FL)
28 new_fl |= S_DIRSYNC;
29 if (flags & JFS_SYNC_FL)
30 new_fl |= S_SYNC;
31 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
32 S_DIRSYNC | S_SYNC);
33 }
34
35 /*
36 * NAME: ialloc()
37 *
38 * FUNCTION: Allocate a new inode
39 *
40 */
41 struct inode *ialloc(struct inode *parent, umode_t mode)
42 {
43 struct super_block *sb = parent->i_sb;
44 struct inode *inode;
45 struct jfs_inode_info *jfs_inode;
46 int rc;
47
48 inode = new_inode(sb);
49 if (!inode) {
50 jfs_warn("ialloc: new_inode returned NULL!");
51 return ERR_PTR(-ENOMEM);
52 }
53
54 jfs_inode = JFS_IP(inode);
55
56 rc = diAlloc(parent, S_ISDIR(mode), inode);
57 if (rc) {
58 jfs_warn("ialloc: diAlloc returned %d!", rc);
59 goto fail_put;
60 }
61
62 if (insert_inode_locked(inode) < 0) {
63 rc = -EINVAL;
64 goto fail_put;
65 }
66
67 inode_init_owner(&nop_mnt_idmap, inode, parent, mode);
68 /*
69 * New inodes need to save sane values on disk when
70 * uid & gid mount options are used
71 */
72 jfs_inode->saved_uid = inode->i_uid;
73 jfs_inode->saved_gid = inode->i_gid;
74
75 /*
76 * Allocate inode to quota.
77 */
78 rc = dquot_initialize(inode);
79 if (rc)
80 goto fail_drop;
81 rc = dquot_alloc_inode(inode);
82 if (rc)
83 goto fail_drop;
84
85 /* inherit flags from parent */
86 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
87
88 if (S_ISDIR(mode)) {
89 jfs_inode->mode2 |= IDIRECTORY;
90 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
91 }
92 else {
93 jfs_inode->mode2 |= INLINEEA | ISPARSE;
94 if (S_ISLNK(mode))
95 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
96 }
97 jfs_inode->mode2 |= inode->i_mode;
98
99 inode->i_blocks = 0;
100 simple_inode_init_ts(inode);
101 jfs_inode->otime = inode_get_ctime_sec(inode);
102 inode->i_generation = JFS_SBI(sb)->gengen++;
103
104 jfs_inode->cflag = 0;
105
106 /* Zero remaining fields */
107 memset(&jfs_inode->acl, 0, sizeof(dxd_t));
108 memset(&jfs_inode->ea, 0, sizeof(dxd_t));
109 jfs_inode->next_index = 0;
110 jfs_inode->acltype = 0;
111 jfs_inode->btorder = 0;
112 jfs_inode->btindex = 0;
113 jfs_inode->bxflag = 0;
114 jfs_inode->blid = 0;
115 jfs_inode->atlhead = 0;
116 jfs_inode->atltail = 0;
117 jfs_inode->xtlid = 0;
118 jfs_set_inode_flags(inode);
119
120 jfs_info("ialloc returns inode = 0x%p", inode);
121
122 return inode;
123
124 fail_drop:
125 dquot_drop(inode);
126 inode->i_flags |= S_NOQUOTA;
127 clear_nlink(inode);
128 discard_new_inode(inode);
129 return ERR_PTR(rc);
130
131 fail_put:
132 iput(inode);
133 return ERR_PTR(rc);
134 }
135
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