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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ialloc.c
3 *
4 * PURPOSE
5 * Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
6 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * 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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <linux/sched.h>
24#include <linux/slab.h>
25
26#include "udf_i.h"
27#include "udf_sb.h"
28
Cyrill Gorcunovcb00ea32007-07-19 01:47:43 -070029void udf_free_inode(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070030{
31 struct super_block *sb = inode->i_sb;
32 struct udf_sb_info *sbi = UDF_SB(sb);
Jan Kara69d75672013-09-12 22:00:15 +020033 struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Jan Kara69d75672013-09-12 22:00:15 +020035 if (lvidiu) {
36 mutex_lock(&sbi->s_alloc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 if (S_ISDIR(inode->i_mode))
marcin.slusarz@gmail.comc2104fd2008-01-30 22:03:57 +010038 le32_add_cpu(&lvidiu->numDirs, -1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 else
marcin.slusarz@gmail.comc2104fd2008-01-30 22:03:57 +010040 le32_add_cpu(&lvidiu->numFiles, -1);
Jan Kara146bca72009-03-16 18:27:37 +010041 udf_updated_lvid(sb);
Jan Kara69d75672013-09-12 22:00:15 +020042 mutex_unlock(&sbi->s_alloc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Pekka Enberg97e961f2008-10-15 12:29:03 +020045 udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070046}
47
Al Viro0b93a922014-09-04 09:47:41 -040048struct inode *udf_new_inode(struct inode *dir, umode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070049{
50 struct super_block *sb = dir->i_sb;
51 struct udf_sb_info *sbi = UDF_SB(sb);
Cyrill Gorcunovcb00ea32007-07-19 01:47:43 -070052 struct inode *inode;
Jan Kara36350462010-05-19 16:28:56 +020053 int block;
Marcin Slusarzc0b34432008-02-08 04:20:42 -080054 uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -080055 struct udf_inode_info *iinfo;
56 struct udf_inode_info *dinfo = UDF_I(dir);
Jan Kara69d75672013-09-12 22:00:15 +020057 struct logicalVolIntegrityDescImpUse *lvidiu;
Al Viro0b93a922014-09-04 09:47:41 -040058 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60 inode = new_inode(sb);
61
Al Viro0b93a922014-09-04 09:47:41 -040062 if (!inode)
63 return ERR_PTR(-ENOMEM);
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -080065 iinfo = UDF_I(inode);
Jan Kara97e1cfb2008-08-18 13:44:48 +020066 if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
67 iinfo->i_efe = 1;
68 if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
69 sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
70 iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
71 sizeof(struct extendedFileEntry),
72 GFP_KERNEL);
73 } else {
74 iinfo->i_efe = 0;
75 iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
76 sizeof(struct fileEntry),
77 GFP_KERNEL);
78 }
79 if (!iinfo->i_ext.i_data) {
80 iput(inode);
Al Viro0b93a922014-09-04 09:47:41 -040081 return ERR_PTR(-ENOMEM);
Jan Kara97e1cfb2008-08-18 13:44:48 +020082 }
Eric Sandeen225add62006-08-05 12:15:17 -070083
Al Viro0b93a922014-09-04 09:47:41 -040084 err = -ENOSPC;
Marcin Slusarz4b111112008-02-08 04:20:36 -080085 block = udf_new_block(dir->i_sb, NULL,
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -080086 dinfo->i_location.partitionReferenceNum,
Al Viro0b93a922014-09-04 09:47:41 -040087 start, &err);
88 if (err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 iput(inode);
Al Viro0b93a922014-09-04 09:47:41 -040090 return ERR_PTR(err);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 }
92
Jan Kara69d75672013-09-12 22:00:15 +020093 lvidiu = udf_sb_lvidiu(sb);
94 if (lvidiu) {
Jan Karad664b6a2010-10-20 18:28:46 +020095 iinfo->i_unique = lvid_get_unique_id(sb);
Jan Kara470cca52014-09-04 16:26:19 +020096 inode->i_generation = iinfo->i_unique;
Jan Karad664b6a2010-10-20 18:28:46 +020097 mutex_lock(&sbi->s_alloc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 if (S_ISDIR(mode))
marcin.slusarz@gmail.comc2104fd2008-01-30 22:03:57 +010099 le32_add_cpu(&lvidiu->numDirs, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 else
marcin.slusarz@gmail.comc2104fd2008-01-30 22:03:57 +0100101 le32_add_cpu(&lvidiu->numFiles, 1);
Jan Kara146bca72009-03-16 18:27:37 +0100102 udf_updated_lvid(sb);
Jan Karad664b6a2010-10-20 18:28:46 +0200103 mutex_unlock(&sbi->s_alloc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 }
Dmitry Monakhova6c5a032010-03-04 17:32:22 +0300105
106 inode_init_owner(inode, dir, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -0800108 iinfo->i_location.logicalBlockNum = block;
109 iinfo->i_location.partitionReferenceNum =
110 dinfo->i_location.partitionReferenceNum;
Pekka Enberg97e961f2008-10-15 12:29:03 +0200111 inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 inode->i_blocks = 0;
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -0800113 iinfo->i_lenEAttr = 0;
114 iinfo->i_lenAlloc = 0;
115 iinfo->i_use = 0;
Steve Nickeld5e2cf02012-02-14 00:28:42 -0500116 iinfo->i_checkpoint = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -0800118 iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -0800120 iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 else
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -0800122 iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 inode->i_mtime = inode->i_atime = inode->i_ctime =
Marcin Slusarz48d6d8f2008-02-08 04:20:44 -0800124 iinfo->i_crtime = current_fs_time(inode->i_sb);
Al Virob2315092014-09-04 09:38:11 -0400125 if (unlikely(insert_inode_locked(inode) < 0)) {
126 make_bad_inode(inode);
127 iput(inode);
Al Viro0b93a922014-09-04 09:47:41 -0400128 return ERR_PTR(-EIO);
Al Virob2315092014-09-04 09:38:11 -0400129 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 mark_inode_dirty(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 return inode;
133}