Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ialloc.c |
| 3 | * |
| 4 | * PURPOSE |
| 5 | * Inode allocation handling routines for the OSTA-UDF(tm) filesystem. |
| 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/sched.h> |
| 25 | #include <linux/slab.h> |
| 26 | |
| 27 | #include "udf_i.h" |
| 28 | #include "udf_sb.h" |
| 29 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 30 | void udf_free_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | { |
| 32 | struct super_block *sb = inode->i_sb; |
| 33 | struct udf_sb_info *sbi = UDF_SB(sb); |
| 34 | |
| 35 | /* |
| 36 | * Note: we must free any quota before locking the superblock, |
| 37 | * as writing the quota to disk may need the lock as well. |
| 38 | */ |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 39 | dquot_free_inode(inode); |
Christoph Hellwig | 9f75475 | 2010-03-03 09:05:05 -0500 | [diff] [blame] | 40 | dquot_drop(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | clear_inode(inode); |
| 43 | |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 44 | mutex_lock(&sbi->s_alloc_mutex); |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 45 | if (sbi->s_lvid_bh) { |
| 46 | struct logicalVolIntegrityDescImpUse *lvidiu = |
| 47 | udf_sb_lvidiu(sbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | if (S_ISDIR(inode->i_mode)) |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 49 | le32_add_cpu(&lvidiu->numDirs, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | else |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 51 | le32_add_cpu(&lvidiu->numFiles, -1); |
Jan Kara | 146bca7 | 2009-03-16 18:27:37 +0100 | [diff] [blame] | 52 | udf_updated_lvid(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | } |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 54 | mutex_unlock(&sbi->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 56 | udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | } |
| 58 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 59 | struct inode *udf_new_inode(struct inode *dir, int mode, int *err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | { |
| 61 | struct super_block *sb = dir->i_sb; |
| 62 | struct udf_sb_info *sbi = UDF_SB(sb); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 63 | struct inode *inode; |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 64 | int block, ret; |
Marcin Slusarz | c0b3443 | 2008-02-08 04:20:42 -0800 | [diff] [blame] | 65 | uint32_t start = UDF_I(dir)->i_location.logicalBlockNum; |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 66 | struct udf_inode_info *iinfo; |
| 67 | struct udf_inode_info *dinfo = UDF_I(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | inode = new_inode(sb); |
| 70 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 71 | if (!inode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | *err = -ENOMEM; |
| 73 | return NULL; |
| 74 | } |
| 75 | *err = -ENOSPC; |
| 76 | |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 77 | iinfo = UDF_I(inode); |
Jan Kara | 97e1cfb | 2008-08-18 13:44:48 +0200 | [diff] [blame] | 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); |
| 90 | } |
| 91 | if (!iinfo->i_ext.i_data) { |
| 92 | iput(inode); |
| 93 | *err = -ENOMEM; |
| 94 | return NULL; |
| 95 | } |
Eric Sandeen | 225add6 | 2006-08-05 12:15:17 -0700 | [diff] [blame] | 96 | |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 97 | block = udf_new_block(dir->i_sb, NULL, |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 98 | dinfo->i_location.partitionReferenceNum, |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 99 | start, err); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 100 | if (*err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | iput(inode); |
| 102 | return NULL; |
| 103 | } |
| 104 | |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 105 | mutex_lock(&sbi->s_alloc_mutex); |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 106 | if (sbi->s_lvid_bh) { |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 107 | struct logicalVolIntegrityDesc *lvid = |
| 108 | (struct logicalVolIntegrityDesc *) |
| 109 | sbi->s_lvid_bh->b_data; |
| 110 | struct logicalVolIntegrityDescImpUse *lvidiu = |
| 111 | udf_sb_lvidiu(sbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | struct logicalVolHeaderDesc *lvhd; |
| 113 | uint64_t uniqueID; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 114 | lvhd = (struct logicalVolHeaderDesc *) |
| 115 | (lvid->logicalVolContentsUse); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | if (S_ISDIR(mode)) |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 117 | le32_add_cpu(&lvidiu->numDirs, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | else |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 119 | le32_add_cpu(&lvidiu->numFiles, 1); |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 120 | iinfo->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | if (!(++uniqueID & 0x00000000FFFFFFFFUL)) |
| 122 | uniqueID += 16; |
| 123 | lvhd->uniqueID = cpu_to_le64(uniqueID); |
Jan Kara | 146bca7 | 2009-03-16 18:27:37 +0100 | [diff] [blame] | 124 | udf_updated_lvid(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | } |
Jan Kara | db0badc | 2008-08-18 13:40:18 +0200 | [diff] [blame] | 126 | mutex_unlock(&sbi->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | inode->i_mode = mode; |
David Howells | 7706bb3 | 2008-11-14 10:39:03 +1100 | [diff] [blame] | 128 | inode->i_uid = current_fsuid(); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 129 | if (dir->i_mode & S_ISGID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | inode->i_gid = dir->i_gid; |
| 131 | if (S_ISDIR(mode)) |
| 132 | mode |= S_ISGID; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 133 | } else { |
David Howells | 7706bb3 | 2008-11-14 10:39:03 +1100 | [diff] [blame] | 134 | inode->i_gid = current_fsgid(); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 135 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 137 | iinfo->i_location.logicalBlockNum = block; |
| 138 | iinfo->i_location.partitionReferenceNum = |
| 139 | dinfo->i_location.partitionReferenceNum; |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 140 | inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | inode->i_blocks = 0; |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 142 | iinfo->i_lenEAttr = 0; |
| 143 | iinfo->i_lenAlloc = 0; |
| 144 | iinfo->i_use = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 146 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 148 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | else |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 150 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 152 | iinfo->i_crtime = current_fs_time(inode->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | insert_inode_hash(inode); |
| 154 | mark_inode_dirty(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 156 | dquot_initialize(inode); |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 157 | ret = dquot_alloc_inode(inode); |
| 158 | if (ret) { |
Christoph Hellwig | 9f75475 | 2010-03-03 09:05:05 -0500 | [diff] [blame] | 159 | dquot_drop(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | inode->i_flags |= S_NOQUOTA; |
| 161 | inode->i_nlink = 0; |
| 162 | iput(inode); |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 163 | *err = ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | return NULL; |
| 165 | } |
| 166 | |
| 167 | *err = 0; |
| 168 | return inode; |
| 169 | } |