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Commit | Line | Data |
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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> | |
23 | #include <linux/quotaops.h> | |
24 | #include <linux/udf_fs.h> | |
25 | #include <linux/sched.h> | |
26 | #include <linux/slab.h> | |
27 | ||
28 | #include "udf_i.h" | |
29 | #include "udf_sb.h" | |
30 | ||
cb00ea35 | 31 | void udf_free_inode(struct inode *inode) |
1da177e4 LT |
32 | { |
33 | struct super_block *sb = inode->i_sb; | |
34 | struct udf_sb_info *sbi = UDF_SB(sb); | |
35 | ||
36 | /* | |
37 | * Note: we must free any quota before locking the superblock, | |
38 | * as writing the quota to disk may need the lock as well. | |
39 | */ | |
40 | DQUOT_FREE_INODE(inode); | |
41 | DQUOT_DROP(inode); | |
42 | ||
43 | clear_inode(inode); | |
44 | ||
1e7933de | 45 | mutex_lock(&sbi->s_alloc_mutex); |
6c79e987 MS |
46 | if (sbi->s_lvid_bh) { |
47 | struct logicalVolIntegrityDescImpUse *lvidiu = | |
48 | udf_sb_lvidiu(sbi); | |
1da177e4 | 49 | if (S_ISDIR(inode->i_mode)) |
6c79e987 MS |
50 | lvidiu->numDirs = |
51 | cpu_to_le32(le32_to_cpu(lvidiu->numDirs) - 1); | |
1da177e4 | 52 | else |
6c79e987 MS |
53 | lvidiu->numFiles = |
54 | cpu_to_le32(le32_to_cpu(lvidiu->numFiles) - 1); | |
c9c64155 | 55 | |
6c79e987 | 56 | mark_buffer_dirty(sbi->s_lvid_bh); |
1da177e4 | 57 | } |
1e7933de | 58 | mutex_unlock(&sbi->s_alloc_mutex); |
1da177e4 | 59 | |
c0b34438 | 60 | udf_free_blocks(sb, NULL, UDF_I(inode)->i_location, 0, 1); |
1da177e4 LT |
61 | } |
62 | ||
cb00ea35 | 63 | struct inode *udf_new_inode(struct inode *dir, int mode, int *err) |
1da177e4 LT |
64 | { |
65 | struct super_block *sb = dir->i_sb; | |
66 | struct udf_sb_info *sbi = UDF_SB(sb); | |
cb00ea35 | 67 | struct inode *inode; |
1da177e4 | 68 | int block; |
c0b34438 | 69 | uint32_t start = UDF_I(dir)->i_location.logicalBlockNum; |
1da177e4 LT |
70 | |
71 | inode = new_inode(sb); | |
72 | ||
cb00ea35 | 73 | if (!inode) { |
1da177e4 LT |
74 | *err = -ENOMEM; |
75 | return NULL; | |
76 | } | |
77 | *err = -ENOSPC; | |
78 | ||
c0b34438 MS |
79 | UDF_I(inode)->i_unique = 0; |
80 | UDF_I(inode)->i_lenExtents = 0; | |
81 | UDF_I(inode)->i_next_alloc_block = 0; | |
82 | UDF_I(inode)->i_next_alloc_goal = 0; | |
83 | UDF_I(inode)->i_strat4096 = 0; | |
225add61 | 84 | |
4b11111a | 85 | block = udf_new_block(dir->i_sb, NULL, |
c0b34438 | 86 | UDF_I(dir)->i_location.partitionReferenceNum, |
28de7948 | 87 | start, err); |
cb00ea35 | 88 | if (*err) { |
1da177e4 LT |
89 | iput(inode); |
90 | return NULL; | |
91 | } | |
92 | ||
1e7933de | 93 | mutex_lock(&sbi->s_alloc_mutex); |
6c79e987 | 94 | if (sbi->s_lvid_bh) { |
4b11111a MS |
95 | struct logicalVolIntegrityDesc *lvid = |
96 | (struct logicalVolIntegrityDesc *) | |
97 | sbi->s_lvid_bh->b_data; | |
98 | struct logicalVolIntegrityDescImpUse *lvidiu = | |
99 | udf_sb_lvidiu(sbi); | |
1da177e4 LT |
100 | struct logicalVolHeaderDesc *lvhd; |
101 | uint64_t uniqueID; | |
4b11111a MS |
102 | lvhd = (struct logicalVolHeaderDesc *) |
103 | (lvid->logicalVolContentsUse); | |
1da177e4 | 104 | if (S_ISDIR(mode)) |
6c79e987 MS |
105 | lvidiu->numDirs = |
106 | cpu_to_le32(le32_to_cpu(lvidiu->numDirs) + 1); | |
1da177e4 | 107 | else |
6c79e987 MS |
108 | lvidiu->numFiles = |
109 | cpu_to_le32(le32_to_cpu(lvidiu->numFiles) + 1); | |
c0b34438 | 110 | UDF_I(inode)->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID); |
1da177e4 LT |
111 | if (!(++uniqueID & 0x00000000FFFFFFFFUL)) |
112 | uniqueID += 16; | |
113 | lvhd->uniqueID = cpu_to_le64(uniqueID); | |
6c79e987 | 114 | mark_buffer_dirty(sbi->s_lvid_bh); |
1da177e4 LT |
115 | } |
116 | inode->i_mode = mode; | |
117 | inode->i_uid = current->fsuid; | |
cb00ea35 | 118 | if (dir->i_mode & S_ISGID) { |
1da177e4 LT |
119 | inode->i_gid = dir->i_gid; |
120 | if (S_ISDIR(mode)) | |
121 | mode |= S_ISGID; | |
28de7948 | 122 | } else { |
1da177e4 | 123 | inode->i_gid = current->fsgid; |
28de7948 | 124 | } |
1da177e4 | 125 | |
c0b34438 MS |
126 | UDF_I(inode)->i_location.logicalBlockNum = block; |
127 | UDF_I(inode)->i_location.partitionReferenceNum = | |
128 | UDF_I(dir)->i_location.partitionReferenceNum; | |
129 | inode->i_ino = udf_get_lb_pblock(sb, UDF_I(inode)->i_location, 0); | |
1da177e4 | 130 | inode->i_blocks = 0; |
c0b34438 MS |
131 | UDF_I(inode)->i_lenEAttr = 0; |
132 | UDF_I(inode)->i_lenAlloc = 0; | |
133 | UDF_I(inode)->i_use = 0; | |
cb00ea35 | 134 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { |
c0b34438 | 135 | UDF_I(inode)->i_efe = 1; |
6c79e987 MS |
136 | if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev) |
137 | sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE; | |
c0b34438 | 138 | UDF_I(inode)->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize - |
4b11111a MS |
139 | sizeof(struct extendedFileEntry), |
140 | GFP_KERNEL); | |
cb00ea35 | 141 | } else { |
c0b34438 MS |
142 | UDF_I(inode)->i_efe = 0; |
143 | UDF_I(inode)->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize - | |
4b11111a MS |
144 | sizeof(struct fileEntry), |
145 | GFP_KERNEL); | |
1da177e4 | 146 | } |
c0b34438 | 147 | if (!UDF_I(inode)->i_ext.i_data) { |
c9c64155 CG |
148 | iput(inode); |
149 | *err = -ENOMEM; | |
150 | mutex_unlock(&sbi->s_alloc_mutex); | |
151 | return NULL; | |
152 | } | |
1da177e4 | 153 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) |
c0b34438 | 154 | UDF_I(inode)->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; |
1da177e4 | 155 | else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
c0b34438 | 156 | UDF_I(inode)->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
1da177e4 | 157 | else |
c0b34438 | 158 | UDF_I(inode)->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
1da177e4 | 159 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
c0b34438 | 160 | UDF_I(inode)->i_crtime = current_fs_time(inode->i_sb); |
1da177e4 LT |
161 | insert_inode_hash(inode); |
162 | mark_inode_dirty(inode); | |
1e7933de | 163 | mutex_unlock(&sbi->s_alloc_mutex); |
1da177e4 | 164 | |
cb00ea35 | 165 | if (DQUOT_ALLOC_INODE(inode)) { |
1da177e4 LT |
166 | DQUOT_DROP(inode); |
167 | inode->i_flags |= S_NOQUOTA; | |
168 | inode->i_nlink = 0; | |
169 | iput(inode); | |
170 | *err = -EDQUOT; | |
171 | return NULL; | |
172 | } | |
173 | ||
174 | *err = 0; | |
175 | return inode; | |
176 | } |