Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * ialloc.c | |
3 | * | |
4 | * PURPOSE | |
5 | * Inode allocation handling routines for the OSTA-UDF(tm) filesystem. | |
6 | * | |
1da177e4 LT |
7 | * COPYRIGHT |
8 | * This file is distributed under the terms of the GNU General Public | |
9 | * License (GPL). Copies of the GPL can be obtained from: | |
10 | * ftp://prep.ai.mit.edu/pub/gnu/GPL | |
11 | * Each contributing author retains all rights to their own work. | |
12 | * | |
13 | * (C) 1998-2001 Ben Fennema | |
14 | * | |
15 | * HISTORY | |
16 | * | |
17 | * 02/24/99 blf Created. | |
18 | * | |
19 | */ | |
20 | ||
21 | #include "udfdecl.h" | |
22 | #include <linux/fs.h> | |
1da177e4 LT |
23 | #include <linux/sched.h> |
24 | #include <linux/slab.h> | |
25 | ||
26 | #include "udf_i.h" | |
27 | #include "udf_sb.h" | |
28 | ||
cb00ea35 | 29 | void udf_free_inode(struct inode *inode) |
1da177e4 LT |
30 | { |
31 | struct super_block *sb = inode->i_sb; | |
32 | struct udf_sb_info *sbi = UDF_SB(sb); | |
33 | ||
1da177e4 LT |
34 | clear_inode(inode); |
35 | ||
1e7933de | 36 | mutex_lock(&sbi->s_alloc_mutex); |
6c79e987 MS |
37 | if (sbi->s_lvid_bh) { |
38 | struct logicalVolIntegrityDescImpUse *lvidiu = | |
39 | udf_sb_lvidiu(sbi); | |
1da177e4 | 40 | if (S_ISDIR(inode->i_mode)) |
c2104fda | 41 | le32_add_cpu(&lvidiu->numDirs, -1); |
1da177e4 | 42 | else |
c2104fda | 43 | le32_add_cpu(&lvidiu->numFiles, -1); |
146bca72 | 44 | udf_updated_lvid(sb); |
1da177e4 | 45 | } |
1e7933de | 46 | mutex_unlock(&sbi->s_alloc_mutex); |
1da177e4 | 47 | |
97e961fd | 48 | udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1); |
1da177e4 LT |
49 | } |
50 | ||
cb00ea35 | 51 | struct inode *udf_new_inode(struct inode *dir, int mode, int *err) |
1da177e4 LT |
52 | { |
53 | struct super_block *sb = dir->i_sb; | |
54 | struct udf_sb_info *sbi = UDF_SB(sb); | |
cb00ea35 | 55 | struct inode *inode; |
36350462 | 56 | int block; |
c0b34438 | 57 | uint32_t start = UDF_I(dir)->i_location.logicalBlockNum; |
48d6d8ff MS |
58 | struct udf_inode_info *iinfo; |
59 | struct udf_inode_info *dinfo = UDF_I(dir); | |
1da177e4 LT |
60 | |
61 | inode = new_inode(sb); | |
62 | ||
cb00ea35 | 63 | if (!inode) { |
1da177e4 LT |
64 | *err = -ENOMEM; |
65 | return NULL; | |
66 | } | |
67 | *err = -ENOSPC; | |
68 | ||
48d6d8ff | 69 | iinfo = UDF_I(inode); |
97e1cfb0 JK |
70 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { |
71 | iinfo->i_efe = 1; | |
72 | if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev) | |
73 | sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE; | |
74 | iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize - | |
75 | sizeof(struct extendedFileEntry), | |
76 | GFP_KERNEL); | |
77 | } else { | |
78 | iinfo->i_efe = 0; | |
79 | iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize - | |
80 | sizeof(struct fileEntry), | |
81 | GFP_KERNEL); | |
82 | } | |
83 | if (!iinfo->i_ext.i_data) { | |
84 | iput(inode); | |
85 | *err = -ENOMEM; | |
86 | return NULL; | |
87 | } | |
225add61 | 88 | |
4b11111a | 89 | block = udf_new_block(dir->i_sb, NULL, |
48d6d8ff | 90 | dinfo->i_location.partitionReferenceNum, |
28de7948 | 91 | start, err); |
cb00ea35 | 92 | if (*err) { |
1da177e4 LT |
93 | iput(inode); |
94 | return NULL; | |
95 | } | |
96 | ||
1e7933de | 97 | mutex_lock(&sbi->s_alloc_mutex); |
6c79e987 | 98 | if (sbi->s_lvid_bh) { |
4b11111a MS |
99 | struct logicalVolIntegrityDesc *lvid = |
100 | (struct logicalVolIntegrityDesc *) | |
101 | sbi->s_lvid_bh->b_data; | |
102 | struct logicalVolIntegrityDescImpUse *lvidiu = | |
103 | udf_sb_lvidiu(sbi); | |
1da177e4 LT |
104 | struct logicalVolHeaderDesc *lvhd; |
105 | uint64_t uniqueID; | |
4b11111a MS |
106 | lvhd = (struct logicalVolHeaderDesc *) |
107 | (lvid->logicalVolContentsUse); | |
1da177e4 | 108 | if (S_ISDIR(mode)) |
c2104fda | 109 | le32_add_cpu(&lvidiu->numDirs, 1); |
1da177e4 | 110 | else |
c2104fda | 111 | le32_add_cpu(&lvidiu->numFiles, 1); |
48d6d8ff | 112 | iinfo->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID); |
1da177e4 LT |
113 | if (!(++uniqueID & 0x00000000FFFFFFFFUL)) |
114 | uniqueID += 16; | |
115 | lvhd->uniqueID = cpu_to_le64(uniqueID); | |
146bca72 | 116 | udf_updated_lvid(sb); |
1da177e4 | 117 | } |
db0badc5 | 118 | mutex_unlock(&sbi->s_alloc_mutex); |
a6c5a034 DM |
119 | |
120 | inode_init_owner(inode, dir, mode); | |
1da177e4 | 121 | |
48d6d8ff MS |
122 | iinfo->i_location.logicalBlockNum = block; |
123 | iinfo->i_location.partitionReferenceNum = | |
124 | dinfo->i_location.partitionReferenceNum; | |
97e961fd | 125 | inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0); |
1da177e4 | 126 | inode->i_blocks = 0; |
48d6d8ff MS |
127 | iinfo->i_lenEAttr = 0; |
128 | iinfo->i_lenAlloc = 0; | |
129 | iinfo->i_use = 0; | |
1da177e4 | 130 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) |
48d6d8ff | 131 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; |
1da177e4 | 132 | else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
48d6d8ff | 133 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
1da177e4 | 134 | else |
48d6d8ff | 135 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
1da177e4 | 136 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
48d6d8ff | 137 | iinfo->i_crtime = current_fs_time(inode->i_sb); |
1da177e4 LT |
138 | insert_inode_hash(inode); |
139 | mark_inode_dirty(inode); | |
1da177e4 | 140 | |
1da177e4 LT |
141 | *err = 0; |
142 | return inode; | |
143 | } |