x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / fs / udf / ialloc.c
blobc10fa39f97e2e7dacd56ff39c13365140dc8f577
1 /*
2 * ialloc.c
4 * PURPOSE
5 * Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
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.
13 * (C) 1998-2001 Ben Fennema
15 * HISTORY
17 * 02/24/99 blf Created.
21 #include "udfdecl.h"
22 #include <linux/fs.h>
23 #include <linux/quotaops.h>
24 #include <linux/sched.h>
25 #include <linux/slab.h>
27 #include "udf_i.h"
28 #include "udf_sb.h"
30 void udf_free_inode(struct inode *inode)
32 struct super_block *sb = inode->i_sb;
33 struct udf_sb_info *sbi = UDF_SB(sb);
36 * Note: we must free any quota before locking the superblock,
37 * as writing the quota to disk may need the lock as well.
39 vfs_dq_free_inode(inode);
40 vfs_dq_drop(inode);
42 clear_inode(inode);
44 mutex_lock(&sbi->s_alloc_mutex);
45 if (sbi->s_lvid_bh) {
46 struct logicalVolIntegrityDescImpUse *lvidiu =
47 udf_sb_lvidiu(sbi);
48 if (S_ISDIR(inode->i_mode))
49 le32_add_cpu(&lvidiu->numDirs, -1);
50 else
51 le32_add_cpu(&lvidiu->numFiles, -1);
52 udf_updated_lvid(sb);
54 mutex_unlock(&sbi->s_alloc_mutex);
56 udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1);
59 struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
61 struct super_block *sb = dir->i_sb;
62 struct udf_sb_info *sbi = UDF_SB(sb);
63 struct inode *inode;
64 int block;
65 uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
66 struct udf_inode_info *iinfo;
67 struct udf_inode_info *dinfo = UDF_I(dir);
69 inode = new_inode(sb);
71 if (!inode) {
72 *err = -ENOMEM;
73 return NULL;
75 *err = -ENOSPC;
77 iinfo = UDF_I(inode);
78 if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
79 iinfo->i_efe = 1;
80 if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
81 sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
82 iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
83 sizeof(struct extendedFileEntry),
84 GFP_KERNEL);
85 } else {
86 iinfo->i_efe = 0;
87 iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
88 sizeof(struct fileEntry),
89 GFP_KERNEL);
91 if (!iinfo->i_ext.i_data) {
92 iput(inode);
93 *err = -ENOMEM;
94 return NULL;
97 block = udf_new_block(dir->i_sb, NULL,
98 dinfo->i_location.partitionReferenceNum,
99 start, err);
100 if (*err) {
101 iput(inode);
102 return NULL;
105 mutex_lock(&sbi->s_alloc_mutex);
106 if (sbi->s_lvid_bh) {
107 struct logicalVolIntegrityDesc *lvid =
108 (struct logicalVolIntegrityDesc *)
109 sbi->s_lvid_bh->b_data;
110 struct logicalVolIntegrityDescImpUse *lvidiu =
111 udf_sb_lvidiu(sbi);
112 struct logicalVolHeaderDesc *lvhd;
113 uint64_t uniqueID;
114 lvhd = (struct logicalVolHeaderDesc *)
115 (lvid->logicalVolContentsUse);
116 if (S_ISDIR(mode))
117 le32_add_cpu(&lvidiu->numDirs, 1);
118 else
119 le32_add_cpu(&lvidiu->numFiles, 1);
120 iinfo->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID);
121 if (!(++uniqueID & 0x00000000FFFFFFFFUL))
122 uniqueID += 16;
123 lvhd->uniqueID = cpu_to_le64(uniqueID);
124 udf_updated_lvid(sb);
126 mutex_unlock(&sbi->s_alloc_mutex);
127 inode->i_mode = mode;
128 inode->i_uid = current_fsuid();
129 if (dir->i_mode & S_ISGID) {
130 inode->i_gid = dir->i_gid;
131 if (S_ISDIR(mode))
132 mode |= S_ISGID;
133 } else {
134 inode->i_gid = current_fsgid();
137 iinfo->i_location.logicalBlockNum = block;
138 iinfo->i_location.partitionReferenceNum =
139 dinfo->i_location.partitionReferenceNum;
140 inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
141 inode->i_blocks = 0;
142 iinfo->i_lenEAttr = 0;
143 iinfo->i_lenAlloc = 0;
144 iinfo->i_use = 0;
145 if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
146 iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
147 else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
148 iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
149 else
150 iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
151 inode->i_mtime = inode->i_atime = inode->i_ctime =
152 iinfo->i_crtime = current_fs_time(inode->i_sb);
153 insert_inode_hash(inode);
154 mark_inode_dirty(inode);
156 if (vfs_dq_alloc_inode(inode)) {
157 vfs_dq_drop(inode);
158 inode->i_flags |= S_NOQUOTA;
159 inode->i_nlink = 0;
160 iput(inode);
161 *err = -EDQUOT;
162 return NULL;
165 *err = 0;
166 return inode;