1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * ialloc.c
4 *
5 * PURPOSE
6 *	Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
7 *
8 * COPYRIGHT
9 *  (C) 1998-2001 Ben Fennema
10 *
11 * HISTORY
12 *
13 *  02/24/99 blf  Created.
14 *
15 */
16
17#include "udfdecl.h"
18#include <linux/fs.h>
19#include <linux/sched.h>
20#include <linux/slab.h>
21
22#include "udf_i.h"
23#include "udf_sb.h"
24
25void udf_free_inode(struct inode *inode)
26{
27	udf_free_blocks(inode->i_sb, NULL, &UDF_I(inode)->i_location, 0, 1);
28}
29
30struct inode *udf_new_inode(struct inode *dir, umode_t mode)
31{
32	struct super_block *sb = dir->i_sb;
33	struct udf_sb_info *sbi = UDF_SB(sb);
34	struct inode *inode;
35	udf_pblk_t block;
36	uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
37	struct udf_inode_info *iinfo;
38	struct udf_inode_info *dinfo = UDF_I(dir);
39	int err;
40
41	inode = new_inode(sb);
42
43	if (!inode)
44		return ERR_PTR(-ENOMEM);
45
46	iinfo = UDF_I(inode);
47	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
48		iinfo->i_efe = 1;
49		if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
50			sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
51		iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
52					sizeof(struct extendedFileEntry),
53					GFP_KERNEL);
54	} else {
55		iinfo->i_efe = 0;
56		iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
57					sizeof(struct fileEntry),
58					GFP_KERNEL);
59	}
60	if (!iinfo->i_data) {
61		make_bad_inode(inode);
62		iput(inode);
63		return ERR_PTR(-ENOMEM);
64	}
65
66	err = -ENOSPC;
67	block = udf_new_block(dir->i_sb, NULL,
68			      dinfo->i_location.partitionReferenceNum,
69			      start, &err);
70	if (err) {
71		make_bad_inode(inode);
72		iput(inode);
73		return ERR_PTR(err);
74	}
75
76	iinfo->i_unique = lvid_get_unique_id(sb);
77	inode->i_generation = iinfo->i_unique;
78
79	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
80	if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
81		inode->i_uid = sbi->s_uid;
82	if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
83		inode->i_gid = sbi->s_gid;
84
85	iinfo->i_location.logicalBlockNum = block;
86	iinfo->i_location.partitionReferenceNum =
87				dinfo->i_location.partitionReferenceNum;
88	inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
89	inode->i_blocks = 0;
90	iinfo->i_lenEAttr = 0;
91	iinfo->i_lenAlloc = 0;
92	iinfo->i_use = 0;
93	iinfo->i_checkpoint = 1;
94	iinfo->i_extraPerms = FE_PERM_U_CHATTR;
95	udf_update_extra_perms(inode, mode);
96
97	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
98		iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
99	else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
100		iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
101	else
102		iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
103	simple_inode_init_ts(inode);
104	iinfo->i_crtime = inode_get_mtime(inode);
105	if (unlikely(insert_inode_locked(inode) < 0)) {
106		make_bad_inode(inode);
107		iput(inode);
108		return ERR_PTR(-EIO);
109	}
110	mark_inode_dirty(inode);
111
112	return inode;
113}
114