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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/sched.h> |
| 24 | #include <linux/slab.h> |
| 25 | |
| 26 | #include "udf_i.h" |
| 27 | #include "udf_sb.h" |
| 28 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 29 | void udf_free_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | { |
| 31 | struct super_block *sb = inode->i_sb; |
| 32 | struct udf_sb_info *sbi = UDF_SB(sb); |
| 33 | |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 34 | mutex_lock(&sbi->s_alloc_mutex); |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 35 | if (sbi->s_lvid_bh) { |
| 36 | struct logicalVolIntegrityDescImpUse *lvidiu = |
| 37 | udf_sb_lvidiu(sbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | if (S_ISDIR(inode->i_mode)) |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 39 | le32_add_cpu(&lvidiu->numDirs, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | else |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 41 | le32_add_cpu(&lvidiu->numFiles, -1); |
Jan Kara | 146bca7 | 2009-03-16 18:27:37 +0100 | [diff] [blame] | 42 | udf_updated_lvid(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | } |
Ingo Molnar | 1e7933d | 2006-03-23 03:00:44 -0800 | [diff] [blame] | 44 | mutex_unlock(&sbi->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 46 | udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | } |
| 48 | |
Al Viro | faa1729 | 2011-07-26 03:18:29 -0400 | [diff] [blame^] | 49 | struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | { |
| 51 | struct super_block *sb = dir->i_sb; |
| 52 | struct udf_sb_info *sbi = UDF_SB(sb); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 53 | struct inode *inode; |
Jan Kara | 3635046 | 2010-05-19 16:28:56 +0200 | [diff] [blame] | 54 | int block; |
Marcin Slusarz | c0b3443 | 2008-02-08 04:20:42 -0800 | [diff] [blame] | 55 | uint32_t start = UDF_I(dir)->i_location.logicalBlockNum; |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 56 | struct udf_inode_info *iinfo; |
| 57 | struct udf_inode_info *dinfo = UDF_I(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | inode = new_inode(sb); |
| 60 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 61 | if (!inode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | *err = -ENOMEM; |
| 63 | return NULL; |
| 64 | } |
| 65 | *err = -ENOSPC; |
| 66 | |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 67 | iinfo = UDF_I(inode); |
Jan Kara | 97e1cfb | 2008-08-18 13:44:48 +0200 | [diff] [blame] | 68 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { |
| 69 | iinfo->i_efe = 1; |
| 70 | if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev) |
| 71 | sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE; |
| 72 | iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize - |
| 73 | sizeof(struct extendedFileEntry), |
| 74 | GFP_KERNEL); |
| 75 | } else { |
| 76 | iinfo->i_efe = 0; |
| 77 | iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize - |
| 78 | sizeof(struct fileEntry), |
| 79 | GFP_KERNEL); |
| 80 | } |
| 81 | if (!iinfo->i_ext.i_data) { |
| 82 | iput(inode); |
| 83 | *err = -ENOMEM; |
| 84 | return NULL; |
| 85 | } |
Eric Sandeen | 225add6 | 2006-08-05 12:15:17 -0700 | [diff] [blame] | 86 | |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 87 | block = udf_new_block(dir->i_sb, NULL, |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 88 | dinfo->i_location.partitionReferenceNum, |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 89 | start, err); |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 90 | if (*err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | iput(inode); |
| 92 | return NULL; |
| 93 | } |
| 94 | |
Marcin Slusarz | 6c79e98 | 2008-02-08 04:20:30 -0800 | [diff] [blame] | 95 | if (sbi->s_lvid_bh) { |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 96 | struct logicalVolIntegrityDescImpUse *lvidiu; |
| 97 | |
| 98 | iinfo->i_unique = lvid_get_unique_id(sb); |
| 99 | mutex_lock(&sbi->s_alloc_mutex); |
| 100 | lvidiu = udf_sb_lvidiu(sbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | if (S_ISDIR(mode)) |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 102 | le32_add_cpu(&lvidiu->numDirs, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | else |
marcin.slusarz@gmail.com | c2104fd | 2008-01-30 22:03:57 +0100 | [diff] [blame] | 104 | le32_add_cpu(&lvidiu->numFiles, 1); |
Jan Kara | 146bca7 | 2009-03-16 18:27:37 +0100 | [diff] [blame] | 105 | udf_updated_lvid(sb); |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 106 | mutex_unlock(&sbi->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
Dmitry Monakhov | a6c5a03 | 2010-03-04 17:32:22 +0300 | [diff] [blame] | 108 | |
| 109 | inode_init_owner(inode, dir, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 111 | iinfo->i_location.logicalBlockNum = block; |
| 112 | iinfo->i_location.partitionReferenceNum = |
| 113 | dinfo->i_location.partitionReferenceNum; |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 114 | inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | inode->i_blocks = 0; |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 116 | iinfo->i_lenEAttr = 0; |
| 117 | iinfo->i_lenAlloc = 0; |
| 118 | iinfo->i_use = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | 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] | 120 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | 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] | 122 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | else |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 124 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
Marcin Slusarz | 48d6d8f | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 126 | iinfo->i_crtime = current_fs_time(inode->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | insert_inode_hash(inode); |
| 128 | mark_inode_dirty(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | *err = 0; |
| 131 | return inode; |
| 132 | } |