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> |
| 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 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 31 | void udf_free_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 45 | mutex_lock(&sbi->s_alloc_mutex); |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 46 | if (sbi->s_lvid_bh) { |
| 47 | struct logicalVolIntegrityDescImpUse *lvidiu = |
| 48 | udf_sb_lvidiu(sbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | if (S_ISDIR(inode->i_mode)) |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 50 | lvidiu->numDirs = |
| 51 | cpu_to_le32(le32_to_cpu(lvidiu->numDirs) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | else |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 53 | lvidiu->numFiles = |
| 54 | cpu_to_le32(le32_to_cpu(lvidiu->numFiles) - 1); |
Cyrill Gorcunov | c9c6415 | 2007-07-15 23:39:43 -0700 | [diff] [blame] | 55 | |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 56 | mark_buffer_dirty(sbi->s_lvid_bh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | } |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 58 | mutex_unlock(&sbi->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | udf_free_blocks(sb, NULL, UDF_I_LOCATION(inode), 0, 1); |
| 61 | } |
| 62 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 63 | struct inode *udf_new_inode(struct inode *dir, int mode, int *err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
| 65 | struct super_block *sb = dir->i_sb; |
| 66 | struct udf_sb_info *sbi = UDF_SB(sb); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 67 | struct inode *inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | int block; |
| 69 | uint32_t start = UDF_I_LOCATION(dir).logicalBlockNum; |
| 70 | |
| 71 | inode = new_inode(sb); |
| 72 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 73 | if (!inode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | *err = -ENOMEM; |
| 75 | return NULL; |
| 76 | } |
| 77 | *err = -ENOSPC; |
| 78 | |
Eric Sandeen | 225add6 | 2006-08-05 12:15:17 -0700 | [diff] [blame] | 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 | |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame^] | 85 | block = udf_new_block(dir->i_sb, NULL, |
| 86 | UDF_I_LOCATION(dir).partitionReferenceNum, |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 87 | start, err); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 88 | if (*err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | iput(inode); |
| 90 | return NULL; |
| 91 | } |
| 92 | |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 93 | mutex_lock(&sbi->s_alloc_mutex); |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 94 | if (sbi->s_lvid_bh) { |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame^] | 95 | struct logicalVolIntegrityDesc *lvid = |
| 96 | (struct logicalVolIntegrityDesc *) |
| 97 | sbi->s_lvid_bh->b_data; |
| 98 | struct logicalVolIntegrityDescImpUse *lvidiu = |
| 99 | udf_sb_lvidiu(sbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | struct logicalVolHeaderDesc *lvhd; |
| 101 | uint64_t uniqueID; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame^] | 102 | lvhd = (struct logicalVolHeaderDesc *) |
| 103 | (lvid->logicalVolContentsUse); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | if (S_ISDIR(mode)) |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 105 | lvidiu->numDirs = |
| 106 | cpu_to_le32(le32_to_cpu(lvidiu->numDirs) + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | else |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 108 | lvidiu->numFiles = |
| 109 | cpu_to_le32(le32_to_cpu(lvidiu->numFiles) + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | UDF_I_UNIQUE(inode) = uniqueID = le64_to_cpu(lvhd->uniqueID); |
| 111 | if (!(++uniqueID & 0x00000000FFFFFFFFUL)) |
| 112 | uniqueID += 16; |
| 113 | lvhd->uniqueID = cpu_to_le64(uniqueID); |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 114 | mark_buffer_dirty(sbi->s_lvid_bh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | } |
| 116 | inode->i_mode = mode; |
| 117 | inode->i_uid = current->fsuid; |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 118 | if (dir->i_mode & S_ISGID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | inode->i_gid = dir->i_gid; |
| 120 | if (S_ISDIR(mode)) |
| 121 | mode |= S_ISGID; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 122 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | inode->i_gid = current->fsgid; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 124 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | UDF_I_LOCATION(inode).logicalBlockNum = block; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame^] | 127 | UDF_I_LOCATION(inode).partitionReferenceNum = |
| 128 | UDF_I_LOCATION(dir).partitionReferenceNum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | inode->i_ino = udf_get_lb_pblock(sb, UDF_I_LOCATION(inode), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | inode->i_blocks = 0; |
| 131 | UDF_I_LENEATTR(inode) = 0; |
| 132 | UDF_I_LENALLOC(inode) = 0; |
| 133 | UDF_I_USE(inode) = 0; |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 134 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | UDF_I_EFE(inode) = 1; |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 136 | if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev) |
| 137 | sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame^] | 138 | UDF_I_DATA(inode) = kzalloc(inode->i_sb->s_blocksize - |
| 139 | sizeof(struct extendedFileEntry), |
| 140 | GFP_KERNEL); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 141 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | UDF_I_EFE(inode) = 0; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame^] | 143 | UDF_I_DATA(inode) = kzalloc(inode->i_sb->s_blocksize - |
| 144 | sizeof(struct fileEntry), |
| 145 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | } |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 147 | if (!UDF_I_DATA(inode)) { |
Cyrill Gorcunov | c9c6415 | 2007-07-15 23:39:43 -0700 | [diff] [blame] | 148 | iput(inode); |
| 149 | *err = -ENOMEM; |
| 150 | mutex_unlock(&sbi->s_alloc_mutex); |
| 151 | return NULL; |
| 152 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) |
| 154 | UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_IN_ICB; |
| 155 | else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
| 156 | UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_SHORT; |
| 157 | else |
| 158 | UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_LONG; |
| 159 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 160 | UDF_I_CRTIME(inode) = current_fs_time(inode->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | insert_inode_hash(inode); |
| 162 | mark_inode_dirty(inode); |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 163 | mutex_unlock(&sbi->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 165 | if (DQUOT_ALLOC_INODE(inode)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |