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
16void 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 */
41struct 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
124fail_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
131fail_put:
132	iput(inode);
133	return ERR_PTR(rc);
134}
135