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
udf_free_inode(struct inode * inode)25 void udf_free_inode(struct inode *inode)
26 {
27 udf_free_blocks(inode->i_sb, NULL, &UDF_I(inode)->i_location, 0, 1);
28 }
29
udf_new_inode(struct inode * dir,umode_t mode)30 struct 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 inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
104 iinfo->i_crtime = inode->i_mtime;
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