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> | |
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 LT |
59 | |
60 | udf_free_blocks(sb, NULL, UDF_I_LOCATION(inode), 0, 1); | |
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 LT |
68 | int block; |
69 | uint32_t start = UDF_I_LOCATION(dir).logicalBlockNum; | |
70 | ||
71 | inode = new_inode(sb); | |
72 | ||
cb00ea35 | 73 | if (!inode) { |
1da177e4 LT |
74 | *err = -ENOMEM; |
75 | return NULL; | |
76 | } | |
77 | *err = -ENOSPC; | |
78 | ||
225add61 ES |
79 | UDF_I_UNIQUE(inode) = 0; |
80 | UDF_I_LENEXTENTS(inode) = 0; | |
81 | UDF_I_NEXT_ALLOC_BLOCK(inode) = 0; | |
82 | UDF_I_NEXT_ALLOC_GOAL(inode) = 0; | |
83 | UDF_I_STRAT4096(inode) = 0; | |
84 | ||
28de7948 CG |
85 | block = udf_new_block(dir->i_sb, NULL, UDF_I_LOCATION(dir).partitionReferenceNum, |
86 | start, err); | |
cb00ea35 | 87 | if (*err) { |
1da177e4 LT |
88 | iput(inode); |
89 | return NULL; | |
90 | } | |
91 | ||
1e7933de | 92 | mutex_lock(&sbi->s_alloc_mutex); |
6c79e987 MS |
93 | if (sbi->s_lvid_bh) { |
94 | struct logicalVolIntegrityDesc *lvid = (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data; | |
95 | struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sbi); | |
1da177e4 LT |
96 | struct logicalVolHeaderDesc *lvhd; |
97 | uint64_t uniqueID; | |
6c79e987 | 98 | lvhd = (struct logicalVolHeaderDesc *)(lvid->logicalVolContentsUse); |
1da177e4 | 99 | if (S_ISDIR(mode)) |
6c79e987 MS |
100 | lvidiu->numDirs = |
101 | cpu_to_le32(le32_to_cpu(lvidiu->numDirs) + 1); | |
1da177e4 | 102 | else |
6c79e987 MS |
103 | lvidiu->numFiles = |
104 | cpu_to_le32(le32_to_cpu(lvidiu->numFiles) + 1); | |
1da177e4 LT |
105 | UDF_I_UNIQUE(inode) = uniqueID = le64_to_cpu(lvhd->uniqueID); |
106 | if (!(++uniqueID & 0x00000000FFFFFFFFUL)) | |
107 | uniqueID += 16; | |
108 | lvhd->uniqueID = cpu_to_le64(uniqueID); | |
6c79e987 | 109 | mark_buffer_dirty(sbi->s_lvid_bh); |
1da177e4 LT |
110 | } |
111 | inode->i_mode = mode; | |
112 | inode->i_uid = current->fsuid; | |
cb00ea35 | 113 | if (dir->i_mode & S_ISGID) { |
1da177e4 LT |
114 | inode->i_gid = dir->i_gid; |
115 | if (S_ISDIR(mode)) | |
116 | mode |= S_ISGID; | |
28de7948 | 117 | } else { |
1da177e4 | 118 | inode->i_gid = current->fsgid; |
28de7948 | 119 | } |
1da177e4 LT |
120 | |
121 | UDF_I_LOCATION(inode).logicalBlockNum = block; | |
28de7948 | 122 | UDF_I_LOCATION(inode).partitionReferenceNum = UDF_I_LOCATION(dir).partitionReferenceNum; |
1da177e4 | 123 | inode->i_ino = udf_get_lb_pblock(sb, UDF_I_LOCATION(inode), 0); |
1da177e4 LT |
124 | inode->i_blocks = 0; |
125 | UDF_I_LENEATTR(inode) = 0; | |
126 | UDF_I_LENALLOC(inode) = 0; | |
127 | UDF_I_USE(inode) = 0; | |
cb00ea35 | 128 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { |
1da177e4 | 129 | UDF_I_EFE(inode) = 1; |
6c79e987 MS |
130 | if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev) |
131 | sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE; | |
28de7948 | 132 | UDF_I_DATA(inode) = kzalloc(inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry), GFP_KERNEL); |
cb00ea35 | 133 | } else { |
1da177e4 | 134 | UDF_I_EFE(inode) = 0; |
28de7948 | 135 | UDF_I_DATA(inode) = kzalloc(inode->i_sb->s_blocksize - sizeof(struct fileEntry), GFP_KERNEL); |
1da177e4 | 136 | } |
cb00ea35 | 137 | if (!UDF_I_DATA(inode)) { |
c9c64155 CG |
138 | iput(inode); |
139 | *err = -ENOMEM; | |
140 | mutex_unlock(&sbi->s_alloc_mutex); | |
141 | return NULL; | |
142 | } | |
1da177e4 LT |
143 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) |
144 | UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_IN_ICB; | |
145 | else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) | |
146 | UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_SHORT; | |
147 | else | |
148 | UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_LONG; | |
149 | inode->i_mtime = inode->i_atime = inode->i_ctime = | |
28de7948 | 150 | UDF_I_CRTIME(inode) = current_fs_time(inode->i_sb); |
1da177e4 LT |
151 | insert_inode_hash(inode); |
152 | mark_inode_dirty(inode); | |
1e7933de | 153 | mutex_unlock(&sbi->s_alloc_mutex); |
1da177e4 | 154 | |
cb00ea35 | 155 | if (DQUOT_ALLOC_INODE(inode)) { |
1da177e4 LT |
156 | DQUOT_DROP(inode); |
157 | inode->i_flags |= S_NOQUOTA; | |
158 | inode->i_nlink = 0; | |
159 | iput(inode); | |
160 | *err = -EDQUOT; | |
161 | return NULL; | |
162 | } | |
163 | ||
164 | *err = 0; | |
165 | return inode; | |
166 | } |