Bagas Sanjaya | 5ce3455 | 2023-05-22 07:54:34 +0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * namei.c |
| 4 | * |
| 5 | * PURPOSE |
| 6 | * Inode name handling routines for the OSTA-UDF(tm) filesystem. |
| 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * COPYRIGHT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * (C) 1998-2004 Ben Fennema |
| 10 | * (C) 1999-2000 Stelias Computing Inc |
| 11 | * |
| 12 | * HISTORY |
| 13 | * |
| 14 | * 12/12/98 blf Created. Split out the lookup code from dir.c |
| 15 | * 04/19/99 blf link, mknod, symlink support |
| 16 | */ |
| 17 | |
| 18 | #include "udfdecl.h" |
| 19 | |
| 20 | #include "udf_i.h" |
| 21 | #include "udf_sb.h" |
| 22 | #include <linux/string.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/mm.h> |
| 25 | #include <linux/slab.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 26 | #include <linux/sched.h> |
Bob Copeland | f845fce | 2008-04-17 09:47:48 +0200 | [diff] [blame] | 27 | #include <linux/crc-itu-t.h> |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 28 | #include <linux/exportfs.h> |
Jan Kara | a48fc69 | 2021-11-04 15:22:35 +0100 | [diff] [blame] | 29 | #include <linux/iversion.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Al Viro | 391e8bb | 2010-01-31 21:28:48 -0500 | [diff] [blame] | 31 | static inline int udf_match(int len1, const unsigned char *name1, int len2, |
| 32 | const unsigned char *name2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | { |
| 34 | if (len1 != len2) |
| 35 | return 0; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | return !memcmp(name1, name2, len1); |
| 38 | } |
| 39 | |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 40 | /** |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 41 | * udf_fiiter_find_entry - find entry in given directory. |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 42 | * |
| 43 | * @dir: directory inode to search in |
| 44 | * @child: qstr of the name |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 45 | * @iter: iter to use for searching |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 46 | * |
| 47 | * This function searches in the directory @dir for a file name @child. When |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 48 | * found, @iter points to the position in the directory with given entry. |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 49 | * |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 50 | * Returns 0 on success, < 0 on error (including -ENOENT). |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 51 | */ |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 52 | static int udf_fiiter_find_entry(struct inode *dir, const struct qstr *child, |
| 53 | struct udf_fileident_iter *iter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | { |
Steve Magnani | b490bdd | 2017-10-12 08:48:40 -0500 | [diff] [blame] | 55 | int flen; |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 56 | unsigned char *fname = NULL; |
| 57 | struct super_block *sb = dir->i_sb; |
Al Viro | 9fbb76c | 2008-10-12 00:15:17 -0400 | [diff] [blame] | 58 | int isdotdot = child->len == 2 && |
| 59 | child->name[0] == '.' && child->name[1] == '.'; |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 60 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 62 | fname = kmalloc(UDF_NAME_LEN, GFP_NOFS); |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 63 | if (!fname) |
| 64 | return -ENOMEM; |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 65 | |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 66 | for (ret = udf_fiiter_init(iter, dir, 0); |
| 67 | !ret && iter->pos < dir->i_size; |
| 68 | ret = udf_fiiter_advance(iter)) { |
| 69 | if (iter->fi.fileCharacteristics & FID_FILE_CHAR_DELETED) { |
Jan Kara | 3ee3039 | 2014-12-18 22:49:12 +0100 | [diff] [blame] | 70 | if (!UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | continue; |
| 72 | } |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 73 | |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 74 | if (iter->fi.fileCharacteristics & FID_FILE_CHAR_HIDDEN) { |
Jan Kara | 3ee3039 | 2014-12-18 22:49:12 +0100 | [diff] [blame] | 75 | if (!UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | continue; |
| 77 | } |
| 78 | |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 79 | if ((iter->fi.fileCharacteristics & FID_FILE_CHAR_PARENT) && |
Jesper Juhl | a4264b3 | 2010-12-12 23:18:15 +0100 | [diff] [blame] | 80 | isdotdot) |
| 81 | goto out_ok; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 82 | |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 83 | if (!iter->fi.lengthFileIdent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | continue; |
| 85 | |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 86 | flen = udf_get_filename(sb, iter->name, |
| 87 | iter->fi.lengthFileIdent, fname, UDF_NAME_LEN); |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 88 | if (flen < 0) { |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 89 | ret = flen; |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 90 | goto out_err; |
| 91 | } |
| 92 | |
| 93 | if (udf_match(flen, fname, child->len, child->name)) |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 94 | goto out_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 96 | if (!ret) |
| 97 | ret = -ENOENT; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 98 | |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 99 | out_err: |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 100 | udf_fiiter_release(iter); |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 101 | out_ok: |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 102 | kfree(fname); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 103 | |
Jan Kara | 1c80afa | 2022-10-05 18:28:33 +0200 | [diff] [blame] | 104 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 107 | static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry, |
Al Viro | 00cd8dd | 2012-06-10 17:13:09 -0400 | [diff] [blame] | 108 | unsigned int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | { |
| 110 | struct inode *inode = NULL; |
Jan Kara | 200918b | 2022-10-05 18:36:21 +0200 | [diff] [blame] | 111 | struct udf_fileident_iter iter; |
| 112 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Andrew Gabbasov | 9fba705 | 2016-01-15 02:44:21 -0600 | [diff] [blame] | 114 | if (dentry->d_name.len > UDF_NAME_LEN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return ERR_PTR(-ENAMETOOLONG); |
| 116 | |
Jan Kara | 200918b | 2022-10-05 18:36:21 +0200 | [diff] [blame] | 117 | err = udf_fiiter_find_entry(dir, &dentry->d_name, &iter); |
| 118 | if (err < 0 && err != -ENOENT) |
| 119 | return ERR_PTR(err); |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 120 | |
Jan Kara | 200918b | 2022-10-05 18:36:21 +0200 | [diff] [blame] | 121 | if (err == 0) { |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 122 | struct kernel_lb_addr loc; |
| 123 | |
Jan Kara | 200918b | 2022-10-05 18:36:21 +0200 | [diff] [blame] | 124 | loc = lelb_to_cpu(iter.fi.icb.extLocation); |
| 125 | udf_fiiter_release(&iter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 127 | inode = udf_iget(dir->i_sb, &loc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | } |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 129 | |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 130 | return d_splice_alias(inode, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } |
| 132 | |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 133 | static int udf_expand_dir_adinicb(struct inode *inode, udf_pblk_t *block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | { |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 135 | udf_pblk_t newblock; |
| 136 | struct buffer_head *dbh = NULL; |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 137 | struct kernel_lb_addr eloc; |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 138 | struct extent_position epos; |
| 139 | uint8_t alloctype; |
| 140 | struct udf_inode_info *iinfo = UDF_I(inode); |
| 141 | struct udf_fileident_iter iter; |
| 142 | uint8_t *impuse; |
| 143 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 145 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
| 146 | alloctype = ICBTAG_FLAG_AD_SHORT; |
| 147 | else |
| 148 | alloctype = ICBTAG_FLAG_AD_LONG; |
| 149 | |
| 150 | if (!inode->i_size) { |
| 151 | iinfo->i_alloc_type = alloctype; |
| 152 | mark_inode_dirty(inode); |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 153 | return 0; |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 154 | } |
| 155 | |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 156 | /* alloc block, and copy data to it */ |
| 157 | *block = udf_new_block(inode->i_sb, inode, |
| 158 | iinfo->i_location.partitionReferenceNum, |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 159 | iinfo->i_location.logicalBlockNum, &ret); |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 160 | if (!(*block)) |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 161 | return ret; |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 162 | newblock = udf_get_pblock(inode->i_sb, *block, |
| 163 | iinfo->i_location.partitionReferenceNum, |
| 164 | 0); |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 165 | if (newblock == 0xffffffff) |
| 166 | return -EFSCORRUPTED; |
Jan Kara | 101ee13 | 2023-01-18 13:27:07 +0100 | [diff] [blame] | 167 | dbh = sb_getblk(inode->i_sb, newblock); |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 168 | if (!dbh) |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 169 | return -ENOMEM; |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 170 | lock_buffer(dbh); |
| 171 | memcpy(dbh->b_data, iinfo->i_data, inode->i_size); |
| 172 | memset(dbh->b_data + inode->i_size, 0, |
| 173 | inode->i_sb->s_blocksize - inode->i_size); |
| 174 | set_buffer_uptodate(dbh); |
| 175 | unlock_buffer(dbh); |
| 176 | |
| 177 | /* Drop inline data, add block instead */ |
| 178 | iinfo->i_alloc_type = alloctype; |
| 179 | memset(iinfo->i_data + iinfo->i_lenEAttr, 0, iinfo->i_lenAlloc); |
| 180 | iinfo->i_lenAlloc = 0; |
| 181 | eloc.logicalBlockNum = *block; |
| 182 | eloc.partitionReferenceNum = |
| 183 | iinfo->i_location.partitionReferenceNum; |
| 184 | iinfo->i_lenExtents = inode->i_size; |
| 185 | epos.bh = NULL; |
| 186 | epos.block = iinfo->i_location; |
| 187 | epos.offset = udf_file_entry_alloc_offset(inode); |
Jan Kara | 33e9a53 | 2022-12-19 19:50:14 +0100 | [diff] [blame] | 188 | ret = udf_add_aext(inode, &epos, &eloc, inode->i_size, 0); |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 189 | brelse(epos.bh); |
Jan Kara | 33e9a53 | 2022-12-19 19:50:14 +0100 | [diff] [blame] | 190 | if (ret < 0) { |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 191 | brelse(dbh); |
Jan Kara | 33e9a53 | 2022-12-19 19:50:14 +0100 | [diff] [blame] | 192 | udf_free_blocks(inode->i_sb, inode, &eloc, 0, 1); |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 193 | return ret; |
Jan Kara | 33e9a53 | 2022-12-19 19:50:14 +0100 | [diff] [blame] | 194 | } |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 195 | mark_inode_dirty(inode); |
| 196 | |
| 197 | /* Now fixup tags in moved directory entries */ |
| 198 | for (ret = udf_fiiter_init(&iter, inode, 0); |
| 199 | !ret && iter.pos < inode->i_size; |
| 200 | ret = udf_fiiter_advance(&iter)) { |
| 201 | iter.fi.descTag.tagLocation = cpu_to_le32(*block); |
| 202 | if (iter.fi.lengthOfImpUse != cpu_to_le16(0)) |
| 203 | impuse = dbh->b_data + iter.pos + |
| 204 | sizeof(struct fileIdentDesc); |
| 205 | else |
| 206 | impuse = NULL; |
| 207 | udf_fiiter_write_fi(&iter, impuse); |
| 208 | } |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 209 | brelse(dbh); |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 210 | /* |
| 211 | * We don't expect the iteration to fail as the directory has been |
| 212 | * already verified to be correct |
| 213 | */ |
| 214 | WARN_ON_ONCE(ret); |
| 215 | udf_fiiter_release(&iter); |
| 216 | |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 217 | return 0; |
Jan Kara | a27b292 | 2022-10-05 18:10:37 +0200 | [diff] [blame] | 218 | } |
| 219 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 220 | static int udf_fiiter_add_entry(struct inode *dir, struct dentry *dentry, |
| 221 | struct udf_fileident_iter *iter) |
| 222 | { |
| 223 | struct udf_inode_info *dinfo = UDF_I(dir); |
| 224 | int nfidlen, namelen = 0; |
| 225 | int ret; |
| 226 | int off, blksize = 1 << dir->i_blkbits; |
| 227 | udf_pblk_t block; |
| 228 | char name[UDF_NAME_LEN_CS0]; |
| 229 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 230 | if (dentry) { |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 231 | namelen = udf_put_filename(dir->i_sb, dentry->d_name.name, |
Andrew Gabbasov | 525e2c5 | 2016-01-15 02:44:19 -0600 | [diff] [blame] | 232 | dentry->d_name.len, |
Andrew Gabbasov | 9fba705 | 2016-01-15 02:44:21 -0600 | [diff] [blame] | 233 | name, UDF_NAME_LEN_CS0); |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 234 | if (!namelen) |
| 235 | return -ENAMETOOLONG; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 236 | } |
Jan Kara | f2e8334 | 2018-06-13 17:30:14 +0200 | [diff] [blame] | 237 | nfidlen = ALIGN(sizeof(struct fileIdentDesc) + namelen, UDF_NAME_PAD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 239 | for (ret = udf_fiiter_init(iter, dir, 0); |
| 240 | !ret && iter->pos < dir->i_size; |
| 241 | ret = udf_fiiter_advance(iter)) { |
| 242 | if (iter->fi.fileCharacteristics & FID_FILE_CHAR_DELETED) { |
| 243 | if (udf_dir_entry_len(&iter->fi) == nfidlen) { |
| 244 | iter->fi.descTag.tagSerialNum = cpu_to_le16(1); |
| 245 | iter->fi.fileVersionNum = cpu_to_le16(1); |
| 246 | iter->fi.fileCharacteristics = 0; |
| 247 | iter->fi.lengthFileIdent = namelen; |
| 248 | iter->fi.lengthOfImpUse = cpu_to_le16(0); |
| 249 | memcpy(iter->namebuf, name, namelen); |
| 250 | iter->name = iter->namebuf; |
| 251 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | } |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 255 | if (ret) { |
| 256 | udf_fiiter_release(iter); |
| 257 | return ret; |
| 258 | } |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 259 | if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB && |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 260 | blksize - udf_ext0_offset(dir) - iter->pos < nfidlen) { |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 261 | udf_fiiter_release(iter); |
Jan Kara | f386c80 | 2023-01-24 14:49:52 +0100 | [diff] [blame] | 262 | ret = udf_expand_dir_adinicb(dir, &block); |
| 263 | if (ret) |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 264 | return ret; |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 265 | ret = udf_fiiter_init(iter, dir, dir->i_size); |
| 266 | if (ret < 0) |
| 267 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 270 | /* Get blocknumber to use for entry tag */ |
| 271 | if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { |
| 272 | block = dinfo->i_location.logicalBlockNum; |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 273 | } else { |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 274 | block = iter->eloc.logicalBlockNum + |
| 275 | ((iter->elen - 1) >> dir->i_blkbits); |
| 276 | } |
| 277 | off = iter->pos & (blksize - 1); |
| 278 | if (!off) |
| 279 | off = blksize; |
| 280 | /* Entry fits into current block? */ |
| 281 | if (blksize - udf_ext0_offset(dir) - off >= nfidlen) |
| 282 | goto store_fi; |
Jan Kara | 2c948b3 | 2009-12-03 13:39:28 +0100 | [diff] [blame] | 283 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 284 | ret = udf_fiiter_append_blk(iter); |
| 285 | if (ret) { |
| 286 | udf_fiiter_release(iter); |
| 287 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 290 | /* Entry will be completely in the new block? Update tag location... */ |
| 291 | if (!(iter->pos & (blksize - 1))) |
| 292 | block = iter->eloc.logicalBlockNum + |
| 293 | ((iter->elen - 1) >> dir->i_blkbits); |
| 294 | store_fi: |
| 295 | memset(&iter->fi, 0, sizeof(struct fileIdentDesc)); |
| 296 | if (UDF_SB(dir->i_sb)->s_udfrev >= 0x0200) |
| 297 | udf_new_tag((char *)(&iter->fi), TAG_IDENT_FID, 3, 1, block, |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 298 | sizeof(struct tag)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | else |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 300 | udf_new_tag((char *)(&iter->fi), TAG_IDENT_FID, 2, 1, block, |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 301 | sizeof(struct tag)); |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 302 | iter->fi.fileVersionNum = cpu_to_le16(1); |
| 303 | iter->fi.lengthFileIdent = namelen; |
| 304 | iter->fi.lengthOfImpUse = cpu_to_le16(0); |
| 305 | memcpy(iter->namebuf, name, namelen); |
| 306 | iter->name = iter->namebuf; |
Jan Kara | 2c948b3 | 2009-12-03 13:39:28 +0100 | [diff] [blame] | 307 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 308 | dir->i_size += nfidlen; |
| 309 | if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { |
| 310 | dinfo->i_lenAlloc += nfidlen; |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 311 | } else { |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 312 | /* Truncate last extent to proper size */ |
| 313 | udf_fiiter_update_elen(iter, iter->elen - |
| 314 | (dinfo->i_lenExtents - dir->i_size)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | } |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 316 | mark_inode_dirty(dir); |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 317 | |
Jan Kara | f284480 | 2022-10-06 13:25:16 +0200 | [diff] [blame] | 318 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Jan Kara | 4cca7e3 | 2022-10-05 19:26:59 +0200 | [diff] [blame] | 321 | static void udf_fiiter_delete_entry(struct udf_fileident_iter *iter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
Jan Kara | 4cca7e3 | 2022-10-05 19:26:59 +0200 | [diff] [blame] | 323 | iter->fi.fileCharacteristics |= FID_FILE_CHAR_DELETED; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 324 | |
Jan Kara | 4cca7e3 | 2022-10-05 19:26:59 +0200 | [diff] [blame] | 325 | if (UDF_QUERY_FLAG(iter->dir->i_sb, UDF_FLAG_STRICT)) |
| 326 | memset(&iter->fi.icb, 0x00, sizeof(struct long_ad)); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 327 | |
Jan Kara | 4cca7e3 | 2022-10-05 19:26:59 +0200 | [diff] [blame] | 328 | udf_fiiter_write_fi(iter, NULL); |
| 329 | } |
| 330 | |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 331 | static void udf_add_fid_counter(struct super_block *sb, bool dir, int val) |
| 332 | { |
| 333 | struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb); |
| 334 | |
| 335 | if (!lvidiu) |
| 336 | return; |
| 337 | mutex_lock(&UDF_SB(sb)->s_alloc_mutex); |
| 338 | if (dir) |
| 339 | le32_add_cpu(&lvidiu->numDirs, val); |
| 340 | else |
| 341 | le32_add_cpu(&lvidiu->numFiles, val); |
| 342 | udf_updated_lvid(sb); |
| 343 | mutex_unlock(&UDF_SB(sb)->s_alloc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | } |
| 345 | |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 346 | static int udf_add_nondir(struct dentry *dentry, struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 348 | struct udf_inode_info *iinfo = UDF_I(inode); |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 349 | struct inode *dir = d_inode(dentry->d_parent); |
Jan Kara | ef91f99 | 2022-10-06 14:08:59 +0200 | [diff] [blame] | 350 | struct udf_fileident_iter iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | |
Jan Kara | ef91f99 | 2022-10-06 14:08:59 +0200 | [diff] [blame] | 353 | err = udf_fiiter_add_entry(dir, dentry, &iter); |
| 354 | if (err) { |
Miklos Szeredi | 6d6b77f | 2011-10-28 14:13:28 +0200 | [diff] [blame] | 355 | inode_dec_link_count(inode); |
Al Viro | 5c1a68a3 | 2018-05-16 12:25:39 -0400 | [diff] [blame] | 356 | discard_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | return err; |
| 358 | } |
Jan Kara | ef91f99 | 2022-10-06 14:08:59 +0200 | [diff] [blame] | 359 | iter.fi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| 360 | iter.fi.icb.extLocation = cpu_to_lelb(iinfo->i_location); |
| 361 | *(__le32 *)((struct allocDescImpUse *)iter.fi.icb.impUse)->impUse = |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 362 | cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL); |
Jan Kara | ef91f99 | 2022-10-06 14:08:59 +0200 | [diff] [blame] | 363 | udf_fiiter_write_fi(&iter, NULL); |
Jeff Layton | f972fed | 2023-10-04 14:52:59 -0400 | [diff] [blame] | 364 | inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir)); |
Jan Kara | 3adc12e | 2015-03-24 16:47:25 -0400 | [diff] [blame] | 365 | mark_inode_dirty(dir); |
Jan Kara | ef91f99 | 2022-10-06 14:08:59 +0200 | [diff] [blame] | 366 | udf_fiiter_release(&iter); |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 367 | udf_add_fid_counter(dir->i_sb, false, 1); |
Al Viro | 1e2e547 | 2018-05-04 08:23:01 -0400 | [diff] [blame] | 368 | d_instantiate_new(dentry, inode); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | return 0; |
| 371 | } |
| 372 | |
Christian Brauner | 6c960e6 | 2023-01-13 12:49:13 +0100 | [diff] [blame] | 373 | static int udf_create(struct mnt_idmap *idmap, struct inode *dir, |
Christian Brauner | 549c729 | 2021-01-21 14:19:43 +0100 | [diff] [blame] | 374 | struct dentry *dentry, umode_t mode, bool excl) |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 375 | { |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 376 | struct inode *inode = udf_new_inode(dir, mode); |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 377 | |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 378 | if (IS_ERR(inode)) |
| 379 | return PTR_ERR(inode); |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 380 | |
Jan Kara | 37a8a39 | 2023-01-24 12:23:04 +0100 | [diff] [blame] | 381 | inode->i_data.a_ops = &udf_aops; |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 382 | inode->i_op = &udf_file_inode_operations; |
| 383 | inode->i_fop = &udf_file_operations; |
| 384 | mark_inode_dirty(inode); |
| 385 | |
| 386 | return udf_add_nondir(dentry, inode); |
| 387 | } |
| 388 | |
Christian Brauner | 011e2b7 | 2023-01-13 12:49:18 +0100 | [diff] [blame] | 389 | static int udf_tmpfile(struct mnt_idmap *idmap, struct inode *dir, |
Miklos Szeredi | 863f144 | 2022-09-24 07:00:00 +0200 | [diff] [blame] | 390 | struct file *file, umode_t mode) |
Al Viro | 656d09d | 2013-06-12 09:35:33 +0400 | [diff] [blame] | 391 | { |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 392 | struct inode *inode = udf_new_inode(dir, mode); |
Al Viro | 656d09d | 2013-06-12 09:35:33 +0400 | [diff] [blame] | 393 | |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 394 | if (IS_ERR(inode)) |
| 395 | return PTR_ERR(inode); |
Al Viro | 656d09d | 2013-06-12 09:35:33 +0400 | [diff] [blame] | 396 | |
Jan Kara | 37a8a39 | 2023-01-24 12:23:04 +0100 | [diff] [blame] | 397 | inode->i_data.a_ops = &udf_aops; |
Al Viro | 656d09d | 2013-06-12 09:35:33 +0400 | [diff] [blame] | 398 | inode->i_op = &udf_file_inode_operations; |
| 399 | inode->i_fop = &udf_file_operations; |
| 400 | mark_inode_dirty(inode); |
Miklos Szeredi | 863f144 | 2022-09-24 07:00:00 +0200 | [diff] [blame] | 401 | d_tmpfile(file, inode); |
Al Viro | b231509 | 2014-09-04 09:38:11 -0400 | [diff] [blame] | 402 | unlock_new_inode(inode); |
Miklos Szeredi | 863f144 | 2022-09-24 07:00:00 +0200 | [diff] [blame] | 403 | return finish_open_simple(file, 0); |
Al Viro | 656d09d | 2013-06-12 09:35:33 +0400 | [diff] [blame] | 404 | } |
| 405 | |
Christian Brauner | 5ebb29b | 2023-01-13 12:49:16 +0100 | [diff] [blame] | 406 | static int udf_mknod(struct mnt_idmap *idmap, struct inode *dir, |
Christian Brauner | 549c729 | 2021-01-21 14:19:43 +0100 | [diff] [blame] | 407 | struct dentry *dentry, umode_t mode, dev_t rdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | { |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 409 | struct inode *inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | if (!old_valid_dev(rdev)) |
| 412 | return -EINVAL; |
| 413 | |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 414 | inode = udf_new_inode(dir, mode); |
| 415 | if (IS_ERR(inode)) |
| 416 | return PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 418 | init_special_inode(inode, mode, rdev); |
| 419 | return udf_add_nondir(dentry, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | } |
| 421 | |
Christian Brauner | c54bd91 | 2023-01-13 12:49:15 +0100 | [diff] [blame] | 422 | static int udf_mkdir(struct mnt_idmap *idmap, struct inode *dir, |
Christian Brauner | 549c729 | 2021-01-21 14:19:43 +0100 | [diff] [blame] | 423 | struct dentry *dentry, umode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | { |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 425 | struct inode *inode; |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 426 | struct udf_fileident_iter iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | int err; |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 428 | struct udf_inode_info *dinfo = UDF_I(dir); |
| 429 | struct udf_inode_info *iinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 431 | inode = udf_new_inode(dir, S_IFDIR | mode); |
| 432 | if (IS_ERR(inode)) |
| 433 | return PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 435 | iinfo = UDF_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | inode->i_op = &udf_dir_inode_operations; |
| 437 | inode->i_fop = &udf_dir_operations; |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 438 | err = udf_fiiter_add_entry(inode, NULL, &iter); |
| 439 | if (err) { |
| 440 | clear_nlink(inode); |
Al Viro | 5c1a68a3 | 2018-05-16 12:25:39 -0400 | [diff] [blame] | 441 | discard_new_inode(inode); |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 442 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | } |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 444 | set_nlink(inode, 2); |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 445 | iter.fi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| 446 | iter.fi.icb.extLocation = cpu_to_lelb(dinfo->i_location); |
| 447 | *(__le32 *)((struct allocDescImpUse *)iter.fi.icb.impUse)->impUse = |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 448 | cpu_to_le32(dinfo->i_unique & 0x00000000FFFFFFFFUL); |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 449 | iter.fi.fileCharacteristics = |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 450 | FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT; |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 451 | udf_fiiter_write_fi(&iter, NULL); |
| 452 | udf_fiiter_release(&iter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | mark_inode_dirty(inode); |
| 454 | |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 455 | err = udf_fiiter_add_entry(dir, dentry, &iter); |
| 456 | if (err) { |
Miklos Szeredi | 6d6b77f | 2011-10-28 14:13:28 +0200 | [diff] [blame] | 457 | clear_nlink(inode); |
Al Viro | 5c1a68a3 | 2018-05-16 12:25:39 -0400 | [diff] [blame] | 458 | discard_new_inode(inode); |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 459 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | } |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 461 | iter.fi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| 462 | iter.fi.icb.extLocation = cpu_to_lelb(iinfo->i_location); |
| 463 | *(__le32 *)((struct allocDescImpUse *)iter.fi.icb.impUse)->impUse = |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 464 | cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL); |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 465 | iter.fi.fileCharacteristics |= FID_FILE_CHAR_DIRECTORY; |
| 466 | udf_fiiter_write_fi(&iter, NULL); |
| 467 | udf_fiiter_release(&iter); |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 468 | udf_add_fid_counter(dir->i_sb, true, 1); |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 469 | inc_nlink(dir); |
Jeff Layton | f972fed | 2023-10-04 14:52:59 -0400 | [diff] [blame] | 470 | inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | mark_inode_dirty(dir); |
Al Viro | 1e2e547 | 2018-05-04 08:23:01 -0400 | [diff] [blame] | 472 | d_instantiate_new(dentry, inode); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 473 | |
Jan Kara | 00bce6f | 2022-10-06 14:22:33 +0200 | [diff] [blame] | 474 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | static int empty_dir(struct inode *dir) |
| 478 | { |
Jan Kara | afb525f | 2022-10-05 19:10:02 +0200 | [diff] [blame] | 479 | struct udf_fileident_iter iter; |
| 480 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Jan Kara | afb525f | 2022-10-05 19:10:02 +0200 | [diff] [blame] | 482 | for (ret = udf_fiiter_init(&iter, dir, 0); |
| 483 | !ret && iter.pos < dir->i_size; |
| 484 | ret = udf_fiiter_advance(&iter)) { |
| 485 | if (iter.fi.lengthFileIdent && |
| 486 | !(iter.fi.fileCharacteristics & FID_FILE_CHAR_DELETED)) { |
| 487 | udf_fiiter_release(&iter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | return 0; |
| 489 | } |
| 490 | } |
Jan Kara | afb525f | 2022-10-05 19:10:02 +0200 | [diff] [blame] | 491 | udf_fiiter_release(&iter); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | return 1; |
| 494 | } |
| 495 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 496 | static int udf_rmdir(struct inode *dir, struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | { |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 498 | int ret; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 499 | struct inode *inode = d_inode(dentry); |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 500 | struct udf_fileident_iter iter; |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 501 | struct kernel_lb_addr tloc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 503 | ret = udf_fiiter_find_entry(dir, &dentry->d_name, &iter); |
| 504 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | goto out; |
| 506 | |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 507 | ret = -EFSCORRUPTED; |
| 508 | tloc = lelb_to_cpu(iter.fi.icb.extLocation); |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 509 | if (udf_get_lb_pblock(dir->i_sb, &tloc, 0) != inode->i_ino) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | goto end_rmdir; |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 511 | ret = -ENOTEMPTY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | if (!empty_dir(inode)) |
| 513 | goto end_rmdir; |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 514 | udf_fiiter_delete_entry(&iter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | if (inode->i_nlink != 2) |
Steve Magnani | fcbf763 | 2017-10-12 08:48:41 -0500 | [diff] [blame] | 516 | udf_warn(inode->i_sb, "empty directory has nlink != 2 (%u)\n", |
Joe Perches | a40ecd7 | 2011-10-10 01:08:04 -0700 | [diff] [blame] | 517 | inode->i_nlink); |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 518 | clear_nlink(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | inode->i_size = 0; |
Stephen Mollett | c007c06 | 2007-05-08 00:31:31 -0700 | [diff] [blame] | 520 | inode_dec_link_count(dir); |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 521 | udf_add_fid_counter(dir->i_sb, true, -1); |
Jeff Layton | f972fed | 2023-10-04 14:52:59 -0400 | [diff] [blame] | 522 | inode_set_mtime_to_ts(dir, |
| 523 | inode_set_ctime_to_ts(dir, inode_set_ctime_current(inode))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | mark_inode_dirty(dir); |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 525 | ret = 0; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 526 | end_rmdir: |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 527 | udf_fiiter_release(&iter); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 528 | out: |
Jan Kara | d11ffa8 | 2022-10-05 19:33:23 +0200 | [diff] [blame] | 529 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } |
| 531 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 532 | static int udf_unlink(struct inode *dir, struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | { |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 534 | int ret; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 535 | struct inode *inode = d_inode(dentry); |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 536 | struct udf_fileident_iter iter; |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 537 | struct kernel_lb_addr tloc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 539 | ret = udf_fiiter_find_entry(dir, &dentry->d_name, &iter); |
| 540 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | goto out; |
| 542 | |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 543 | ret = -EFSCORRUPTED; |
| 544 | tloc = lelb_to_cpu(iter.fi.icb.extLocation); |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 545 | if (udf_get_lb_pblock(dir->i_sb, &tloc, 0) != inode->i_ino) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | goto end_unlink; |
| 547 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 548 | if (!inode->i_nlink) { |
Steve Magnani | fcbf763 | 2017-10-12 08:48:41 -0500 | [diff] [blame] | 549 | udf_debug("Deleting nonexistent file (%lu), %u\n", |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 550 | inode->i_ino, inode->i_nlink); |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 551 | set_nlink(inode, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | } |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 553 | udf_fiiter_delete_entry(&iter); |
Jeff Layton | f972fed | 2023-10-04 14:52:59 -0400 | [diff] [blame] | 554 | inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | mark_inode_dirty(dir); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 556 | inode_dec_link_count(inode); |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 557 | udf_add_fid_counter(dir->i_sb, false, -1); |
Jeff Layton | 59ad88f | 2023-07-05 15:01:44 -0400 | [diff] [blame] | 558 | inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 559 | ret = 0; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 560 | end_unlink: |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 561 | udf_fiiter_release(&iter); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 562 | out: |
Jan Kara | 6ec01a8 | 2022-10-05 19:36:49 +0200 | [diff] [blame] | 563 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Christian Brauner | 7a77db9 | 2023-01-13 12:49:14 +0100 | [diff] [blame] | 566 | static int udf_symlink(struct mnt_idmap *idmap, struct inode *dir, |
Christian Brauner | 549c729 | 2021-01-21 14:19:43 +0100 | [diff] [blame] | 567 | struct dentry *dentry, const char *symname) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | { |
Fabian Frederick | 6ff6b2b | 2017-04-23 20:58:15 +0200 | [diff] [blame] | 569 | struct inode *inode = udf_new_inode(dir, S_IFLNK | 0777); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | struct pathComponent *pc; |
Al Viro | 391e8bb | 2010-01-31 21:28:48 -0500 | [diff] [blame] | 571 | const char *compstart; |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 572 | struct extent_position epos = {}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | int eoffset, elen = 0; |
Al Viro | 391e8bb | 2010-01-31 21:28:48 -0500 | [diff] [blame] | 574 | uint8_t *ea; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | int err; |
Steve Magnani | b490bdd | 2017-10-12 08:48:40 -0500 | [diff] [blame] | 576 | udf_pblk_t block; |
Al Viro | 391e8bb | 2010-01-31 21:28:48 -0500 | [diff] [blame] | 577 | unsigned char *name = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | int namelen; |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 579 | struct udf_inode_info *iinfo; |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 580 | struct super_block *sb = dir->i_sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
Al Viro | 0b93a92 | 2014-09-04 09:47:41 -0400 | [diff] [blame] | 582 | if (IS_ERR(inode)) |
| 583 | return PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Alessio Igor Bogani | 4d0fb62 | 2010-11-16 18:40:47 +0100 | [diff] [blame] | 585 | iinfo = UDF_I(inode); |
| 586 | down_write(&iinfo->i_data_sem); |
Andrew Gabbasov | 9fba705 | 2016-01-15 02:44:21 -0600 | [diff] [blame] | 587 | name = kmalloc(UDF_NAME_LEN_CS0, GFP_NOFS); |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 588 | if (!name) { |
| 589 | err = -ENOMEM; |
| 590 | goto out_no_entry; |
| 591 | } |
| 592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | inode->i_data.a_ops = &udf_symlink_aops; |
Jan Kara | ad4d053 | 2017-01-02 14:30:31 +0100 | [diff] [blame] | 594 | inode->i_op = &udf_symlink_inode_operations; |
Al Viro | 21fc61c | 2015-11-17 01:07:57 -0500 | [diff] [blame] | 595 | inode_nohighmem(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 597 | if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) { |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 598 | struct kernel_lb_addr eloc; |
Harvey Harrison | 78e917d | 2008-04-28 02:16:19 -0700 | [diff] [blame] | 599 | uint32_t bsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 601 | block = udf_new_block(sb, inode, |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 602 | iinfo->i_location.partitionReferenceNum, |
| 603 | iinfo->i_location.logicalBlockNum, &err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | if (!block) |
| 605 | goto out_no_entry; |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 606 | epos.block = iinfo->i_location; |
Jan Kara | ff116fc | 2007-05-08 00:35:14 -0700 | [diff] [blame] | 607 | epos.offset = udf_file_entry_alloc_offset(inode); |
| 608 | epos.bh = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | eloc.logicalBlockNum = block; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 610 | eloc.partitionReferenceNum = |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 611 | iinfo->i_location.partitionReferenceNum; |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 612 | bsize = sb->s_blocksize; |
Harvey Harrison | 78e917d | 2008-04-28 02:16:19 -0700 | [diff] [blame] | 613 | iinfo->i_lenExtents = bsize; |
Jan Kara | 2b10074 | 2022-12-19 19:54:12 +0100 | [diff] [blame] | 614 | err = udf_add_aext(inode, &epos, &eloc, bsize, 0); |
Jan Kara | 3bf25cb | 2007-05-08 00:35:16 -0700 | [diff] [blame] | 615 | brelse(epos.bh); |
Jan Kara | 2b10074 | 2022-12-19 19:54:12 +0100 | [diff] [blame] | 616 | if (err < 0) { |
| 617 | udf_free_blocks(sb, inode, &eloc, 0, 1); |
| 618 | goto out_no_entry; |
| 619 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 621 | block = udf_get_pblock(sb, block, |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 622 | iinfo->i_location.partitionReferenceNum, |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 623 | 0); |
Jan Kara | 101ee13 | 2023-01-18 13:27:07 +0100 | [diff] [blame] | 624 | epos.bh = sb_getblk(sb, block); |
Arturo Giusti | fa236c2 | 2021-05-18 12:34:57 +0200 | [diff] [blame] | 625 | if (unlikely(!epos.bh)) { |
| 626 | err = -ENOMEM; |
Jan Kara | 2b10074 | 2022-12-19 19:54:12 +0100 | [diff] [blame] | 627 | udf_free_blocks(sb, inode, &eloc, 0, 1); |
Arturo Giusti | fa236c2 | 2021-05-18 12:34:57 +0200 | [diff] [blame] | 628 | goto out_no_entry; |
| 629 | } |
Jan Kara | ff116fc | 2007-05-08 00:35:14 -0700 | [diff] [blame] | 630 | lock_buffer(epos.bh); |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 631 | memset(epos.bh->b_data, 0x00, bsize); |
Jan Kara | ff116fc | 2007-05-08 00:35:14 -0700 | [diff] [blame] | 632 | set_buffer_uptodate(epos.bh); |
| 633 | unlock_buffer(epos.bh); |
| 634 | mark_buffer_dirty_inode(epos.bh, inode); |
| 635 | ea = epos.bh->b_data + udf_ext0_offset(inode); |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 636 | } else |
Jan Kara | 382a228 | 2020-09-25 12:29:54 +0200 | [diff] [blame] | 637 | ea = iinfo->i_data + iinfo->i_lenEAttr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 639 | eoffset = sb->s_blocksize - udf_ext0_offset(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | pc = (struct pathComponent *)ea; |
| 641 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 642 | if (*symname == '/') { |
| 643 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | symname++; |
| 645 | } while (*symname == '/'); |
| 646 | |
| 647 | pc->componentType = 1; |
| 648 | pc->lengthComponentIdent = 0; |
| 649 | pc->componentFileVersionNum = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | elen += sizeof(struct pathComponent); |
| 651 | } |
| 652 | |
| 653 | err = -ENAMETOOLONG; |
| 654 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 655 | while (*symname) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | if (elen + sizeof(struct pathComponent) > eoffset) |
| 657 | goto out_no_entry; |
| 658 | |
| 659 | pc = (struct pathComponent *)(ea + elen); |
| 660 | |
Al Viro | 391e8bb | 2010-01-31 21:28:48 -0500 | [diff] [blame] | 661 | compstart = symname; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 663 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | symname++; |
| 665 | } while (*symname && *symname != '/'); |
| 666 | |
| 667 | pc->componentType = 5; |
| 668 | pc->lengthComponentIdent = 0; |
| 669 | pc->componentFileVersionNum = 0; |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 670 | if (compstart[0] == '.') { |
| 671 | if ((symname - compstart) == 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | pc->componentType = 4; |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 673 | else if ((symname - compstart) == 2 && |
| 674 | compstart[1] == '.') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | pc->componentType = 3; |
| 676 | } |
| 677 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 678 | if (pc->componentType == 5) { |
Andrew Gabbasov | 525e2c5 | 2016-01-15 02:44:19 -0600 | [diff] [blame] | 679 | namelen = udf_put_filename(sb, compstart, |
| 680 | symname - compstart, |
Andrew Gabbasov | 9fba705 | 2016-01-15 02:44:21 -0600 | [diff] [blame] | 681 | name, UDF_NAME_LEN_CS0); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 682 | if (!namelen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | goto out_no_entry; |
| 684 | |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 685 | if (elen + sizeof(struct pathComponent) + namelen > |
| 686 | eoffset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | goto out_no_entry; |
| 688 | else |
| 689 | pc->lengthComponentIdent = namelen; |
| 690 | |
| 691 | memcpy(pc->componentIdent, name, namelen); |
| 692 | } |
| 693 | |
| 694 | elen += sizeof(struct pathComponent) + pc->lengthComponentIdent; |
| 695 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 696 | if (*symname) { |
| 697 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | symname++; |
| 699 | } while (*symname == '/'); |
| 700 | } |
| 701 | } |
| 702 | |
Jan Kara | 3bf25cb | 2007-05-08 00:35:16 -0700 | [diff] [blame] | 703 | brelse(epos.bh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | inode->i_size = elen; |
Marcin Slusarz | 48d6d8ff | 2008-02-08 04:20:44 -0800 | [diff] [blame] | 705 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) |
| 706 | iinfo->i_lenAlloc = inode->i_size; |
Jan Kara | 2c948b3 | 2009-12-03 13:39:28 +0100 | [diff] [blame] | 707 | else |
| 708 | udf_truncate_tail_extent(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | mark_inode_dirty(inode); |
Jan Kara | 4ea7772 | 2013-12-23 22:02:16 +0100 | [diff] [blame] | 710 | up_write(&iinfo->i_data_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | |
Al Viro | d2be51c | 2014-09-04 09:34:14 -0400 | [diff] [blame] | 712 | err = udf_add_nondir(dentry, inode); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 713 | out: |
Jan Kara | b80697c | 2008-03-04 14:14:05 +0100 | [diff] [blame] | 714 | kfree(name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | return err; |
| 716 | |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 717 | out_no_entry: |
Alessio Igor Bogani | 4d0fb62 | 2010-11-16 18:40:47 +0100 | [diff] [blame] | 718 | up_write(&iinfo->i_data_sem); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 719 | inode_dec_link_count(inode); |
Al Viro | 5c1a68a3 | 2018-05-16 12:25:39 -0400 | [diff] [blame] | 720 | discard_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | goto out; |
| 722 | } |
| 723 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 724 | static int udf_link(struct dentry *old_dentry, struct inode *dir, |
| 725 | struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 727 | struct inode *inode = d_inode(old_dentry); |
Jan Kara | dbfb102 | 2022-10-06 14:59:11 +0200 | [diff] [blame] | 728 | struct udf_fileident_iter iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | int err; |
| 730 | |
Jan Kara | dbfb102 | 2022-10-06 14:59:11 +0200 | [diff] [blame] | 731 | err = udf_fiiter_add_entry(dir, dentry, &iter); |
| 732 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | return err; |
Jan Kara | dbfb102 | 2022-10-06 14:59:11 +0200 | [diff] [blame] | 734 | iter.fi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| 735 | iter.fi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location); |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 736 | if (UDF_SB(inode->i_sb)->s_lvid_bh) { |
Jan Kara | dbfb102 | 2022-10-06 14:59:11 +0200 | [diff] [blame] | 737 | *(__le32 *)((struct allocDescImpUse *)iter.fi.icb.impUse)->impUse = |
Jan Kara | d664b6a | 2010-10-20 18:28:46 +0200 | [diff] [blame] | 738 | cpu_to_le32(lvid_get_unique_id(inode->i_sb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } |
Jan Kara | dbfb102 | 2022-10-06 14:59:11 +0200 | [diff] [blame] | 740 | udf_fiiter_write_fi(&iter, NULL); |
| 741 | udf_fiiter_release(&iter); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 742 | |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 743 | inc_nlink(inode); |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 744 | udf_add_fid_counter(dir->i_sb, false, 1); |
Jeff Layton | 59ad88f | 2023-07-05 15:01:44 -0400 | [diff] [blame] | 745 | inode_set_ctime_current(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | mark_inode_dirty(inode); |
Jeff Layton | f972fed | 2023-10-04 14:52:59 -0400 | [diff] [blame] | 747 | inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir)); |
Jan Kara | 3adc12e | 2015-03-24 16:47:25 -0400 | [diff] [blame] | 748 | mark_inode_dirty(dir); |
Al Viro | 7de9c6ee | 2010-10-23 11:11:40 -0400 | [diff] [blame] | 749 | ihold(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | d_instantiate(dentry, inode); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | return 0; |
| 753 | } |
| 754 | |
| 755 | /* Anybody can rename anything with this: the permission checks are left to the |
| 756 | * higher-level routines. |
| 757 | */ |
Christian Brauner | e18275a | 2023-01-13 12:49:17 +0100 | [diff] [blame] | 758 | static int udf_rename(struct mnt_idmap *idmap, struct inode *old_dir, |
Christian Brauner | 549c729 | 2021-01-21 14:19:43 +0100 | [diff] [blame] | 759 | struct dentry *old_dentry, struct inode *new_dir, |
| 760 | struct dentry *new_dentry, unsigned int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 762 | struct inode *old_inode = d_inode(old_dentry); |
| 763 | struct inode *new_inode = d_inode(new_dentry); |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 764 | struct udf_fileident_iter oiter, niter, diriter; |
Al Viro | 9d35ceb | 2023-10-17 14:44:23 -0400 | [diff] [blame] | 765 | bool has_diriter = false, is_dir = false; |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 766 | int retval; |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 767 | struct kernel_lb_addr tloc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | |
Miklos Szeredi | f03b8ad | 2016-09-27 11:03:57 +0200 | [diff] [blame] | 769 | if (flags & ~RENAME_NOREPLACE) |
| 770 | return -EINVAL; |
| 771 | |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 772 | retval = udf_fiiter_find_entry(old_dir, &old_dentry->d_name, &oiter); |
| 773 | if (retval) |
| 774 | return retval; |
| 775 | |
| 776 | tloc = lelb_to_cpu(oiter.fi.icb.extLocation); |
| 777 | if (udf_get_lb_pblock(old_dir->i_sb, &tloc, 0) != old_inode->i_ino) { |
| 778 | retval = -ENOENT; |
| 779 | goto out_oiter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | } |
Fabian Frederick | 231473f | 2015-04-08 21:23:58 +0200 | [diff] [blame] | 781 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 782 | if (S_ISDIR(old_inode->i_mode)) { |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 783 | if (new_inode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | retval = -ENOTEMPTY; |
| 785 | if (!empty_dir(new_inode)) |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 786 | goto out_oiter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | } |
Al Viro | 9d35ceb | 2023-10-17 14:44:23 -0400 | [diff] [blame] | 788 | is_dir = true; |
| 789 | } |
| 790 | if (is_dir && old_dir != new_dir) { |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 791 | retval = udf_fiiter_find_entry(old_inode, &dotdot_name, |
| 792 | &diriter); |
| 793 | if (retval == -ENOENT) { |
| 794 | udf_err(old_inode->i_sb, |
| 795 | "directory (ino %lu) has no '..' entry\n", |
| 796 | old_inode->i_ino); |
| 797 | retval = -EFSCORRUPTED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | } |
Jan Kara | 7517ce5d | 2023-06-01 12:58:22 +0200 | [diff] [blame] | 799 | if (retval) |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 800 | goto out_oiter; |
| 801 | has_diriter = true; |
| 802 | tloc = lelb_to_cpu(diriter.fi.icb.extLocation); |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 803 | if (udf_get_lb_pblock(old_inode->i_sb, &tloc, 0) != |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 804 | old_dir->i_ino) { |
| 805 | retval = -EFSCORRUPTED; |
| 806 | udf_err(old_inode->i_sb, |
| 807 | "directory (ino %lu) has parent entry pointing to another inode (%lu != %u)\n", |
| 808 | old_inode->i_ino, old_dir->i_ino, |
| 809 | udf_get_lb_pblock(old_inode->i_sb, &tloc, 0)); |
| 810 | goto out_oiter; |
| 811 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | } |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 813 | |
| 814 | retval = udf_fiiter_find_entry(new_dir, &new_dentry->d_name, &niter); |
| 815 | if (retval && retval != -ENOENT) |
| 816 | goto out_oiter; |
| 817 | /* Entry found but not passed by VFS? */ |
| 818 | if (!retval && !new_inode) { |
| 819 | retval = -EFSCORRUPTED; |
| 820 | udf_fiiter_release(&niter); |
| 821 | goto out_oiter; |
| 822 | } |
| 823 | /* Entry not found? Need to add one... */ |
| 824 | if (retval) { |
| 825 | udf_fiiter_release(&niter); |
| 826 | retval = udf_fiiter_add_entry(new_dir, new_dentry, &niter); |
| 827 | if (retval) |
| 828 | goto out_oiter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | /* |
| 832 | * Like most other Unix systems, set the ctime for inodes on a |
| 833 | * rename. |
| 834 | */ |
Jeff Layton | 59ad88f | 2023-07-05 15:01:44 -0400 | [diff] [blame] | 835 | inode_set_ctime_current(old_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | mark_inode_dirty(old_inode); |
| 837 | |
| 838 | /* |
| 839 | * ok, that's it |
| 840 | */ |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 841 | niter.fi.fileVersionNum = oiter.fi.fileVersionNum; |
| 842 | niter.fi.fileCharacteristics = oiter.fi.fileCharacteristics; |
| 843 | memcpy(&(niter.fi.icb), &(oiter.fi.icb), sizeof(oiter.fi.icb)); |
| 844 | udf_fiiter_write_fi(&niter, NULL); |
| 845 | udf_fiiter_release(&niter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 847 | /* |
| 848 | * The old entry may have moved due to new entry allocation. Find it |
| 849 | * again. |
| 850 | */ |
| 851 | udf_fiiter_release(&oiter); |
| 852 | retval = udf_fiiter_find_entry(old_dir, &old_dentry->d_name, &oiter); |
| 853 | if (retval) { |
| 854 | udf_err(old_dir->i_sb, |
| 855 | "failed to find renamed entry again in directory (ino %lu)\n", |
| 856 | old_dir->i_ino); |
| 857 | } else { |
| 858 | udf_fiiter_delete_entry(&oiter); |
| 859 | udf_fiiter_release(&oiter); |
| 860 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | |
Cyrill Gorcunov | cb00ea3 | 2007-07-19 01:47:43 -0700 | [diff] [blame] | 862 | if (new_inode) { |
Jeff Layton | 59ad88f | 2023-07-05 15:01:44 -0400 | [diff] [blame] | 863 | inode_set_ctime_current(new_inode); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 864 | inode_dec_link_count(new_inode); |
Jan Kara | 085cf7b | 2023-01-25 19:31:38 +0100 | [diff] [blame] | 865 | udf_add_fid_counter(old_dir->i_sb, S_ISDIR(new_inode->i_mode), |
| 866 | -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | } |
Jeff Layton | f972fed | 2023-10-04 14:52:59 -0400 | [diff] [blame] | 868 | inode_set_mtime_to_ts(old_dir, inode_set_ctime_current(old_dir)); |
| 869 | inode_set_mtime_to_ts(new_dir, inode_set_ctime_current(new_dir)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | mark_inode_dirty(old_dir); |
Jan Kara | 3adc12e | 2015-03-24 16:47:25 -0400 | [diff] [blame] | 871 | mark_inode_dirty(new_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 873 | if (has_diriter) { |
| 874 | diriter.fi.icb.extLocation = |
| 875 | cpu_to_lelb(UDF_I(new_dir)->i_location); |
| 876 | udf_update_tag((char *)&diriter.fi, |
| 877 | udf_dir_entry_len(&diriter.fi)); |
| 878 | udf_fiiter_write_fi(&diriter, NULL); |
| 879 | udf_fiiter_release(&diriter); |
Al Viro | 9d35ceb | 2023-10-17 14:44:23 -0400 | [diff] [blame] | 880 | } |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 881 | |
Al Viro | 9d35ceb | 2023-10-17 14:44:23 -0400 | [diff] [blame] | 882 | if (is_dir) { |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 883 | inode_dec_link_count(old_dir); |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 884 | if (new_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 885 | inode_dec_link_count(new_inode); |
Marcin Slusarz | 4b11111 | 2008-02-08 04:20:36 -0800 | [diff] [blame] | 886 | else { |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 887 | inc_nlink(new_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | mark_inode_dirty(new_dir); |
| 889 | } |
| 890 | } |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 891 | return 0; |
| 892 | out_oiter: |
Jan Kara | 7517ce5d | 2023-06-01 12:58:22 +0200 | [diff] [blame] | 893 | if (has_diriter) |
Jan Kara | e9109a9 | 2022-10-06 16:41:23 +0200 | [diff] [blame] | 894 | udf_fiiter_release(&diriter); |
| 895 | udf_fiiter_release(&oiter); |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | return retval; |
| 898 | } |
| 899 | |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 900 | static struct dentry *udf_get_parent(struct dentry *child) |
| 901 | { |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 902 | struct kernel_lb_addr tloc; |
Jan Kara | 9b06fbe | 2022-10-05 18:48:45 +0200 | [diff] [blame] | 903 | struct udf_fileident_iter iter; |
| 904 | int err; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 905 | |
Jan Kara | 9b06fbe | 2022-10-05 18:48:45 +0200 | [diff] [blame] | 906 | err = udf_fiiter_find_entry(d_inode(child), &dotdot_name, &iter); |
| 907 | if (err) |
| 908 | return ERR_PTR(err); |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 909 | |
Jan Kara | 9b06fbe | 2022-10-05 18:48:45 +0200 | [diff] [blame] | 910 | tloc = lelb_to_cpu(iter.fi.icb.extLocation); |
| 911 | udf_fiiter_release(&iter); |
Al Viro | f58b8c3e | 2023-11-11 01:55:30 -0500 | [diff] [blame] | 912 | return d_obtain_alias(udf_iget(child->d_sb, &tloc)); |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 913 | } |
| 914 | |
| 915 | |
| 916 | static struct dentry *udf_nfs_get_inode(struct super_block *sb, u32 block, |
| 917 | u16 partref, __u32 generation) |
| 918 | { |
| 919 | struct inode *inode; |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 920 | struct kernel_lb_addr loc; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 921 | |
| 922 | if (block == 0) |
| 923 | return ERR_PTR(-ESTALE); |
| 924 | |
| 925 | loc.logicalBlockNum = block; |
| 926 | loc.partitionReferenceNum = partref; |
Pekka Enberg | 97e961f | 2008-10-15 12:29:03 +0200 | [diff] [blame] | 927 | inode = udf_iget(sb, &loc); |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 928 | |
Jan Kara | 6d3d5e8 | 2014-09-04 16:15:51 +0200 | [diff] [blame] | 929 | if (IS_ERR(inode)) |
| 930 | return ERR_CAST(inode); |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 931 | |
| 932 | if (generation && inode->i_generation != generation) { |
| 933 | iput(inode); |
| 934 | return ERR_PTR(-ESTALE); |
| 935 | } |
Christoph Hellwig | 4400372 | 2008-08-11 15:49:04 +0200 | [diff] [blame] | 936 | return d_obtain_alias(inode); |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 937 | } |
| 938 | |
| 939 | static struct dentry *udf_fh_to_dentry(struct super_block *sb, |
| 940 | struct fid *fid, int fh_len, int fh_type) |
| 941 | { |
NeilBrown | 92acca4 | 2015-05-08 10:16:23 +1000 | [diff] [blame] | 942 | if (fh_len < 3 || |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 943 | (fh_type != FILEID_UDF_WITH_PARENT && |
| 944 | fh_type != FILEID_UDF_WITHOUT_PARENT)) |
| 945 | return NULL; |
| 946 | |
| 947 | return udf_nfs_get_inode(sb, fid->udf.block, fid->udf.partref, |
| 948 | fid->udf.generation); |
| 949 | } |
| 950 | |
| 951 | static struct dentry *udf_fh_to_parent(struct super_block *sb, |
| 952 | struct fid *fid, int fh_len, int fh_type) |
| 953 | { |
NeilBrown | 92acca4 | 2015-05-08 10:16:23 +1000 | [diff] [blame] | 954 | if (fh_len < 5 || fh_type != FILEID_UDF_WITH_PARENT) |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 955 | return NULL; |
| 956 | |
| 957 | return udf_nfs_get_inode(sb, fid->udf.parent_block, |
| 958 | fid->udf.parent_partref, |
| 959 | fid->udf.parent_generation); |
| 960 | } |
Al Viro | b0b0382 | 2012-04-02 14:34:06 -0400 | [diff] [blame] | 961 | static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp, |
| 962 | struct inode *parent) |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 963 | { |
| 964 | int len = *lenp; |
Pekka Enberg | 5ca4e4b | 2008-10-15 12:28:03 +0200 | [diff] [blame] | 965 | struct kernel_lb_addr location = UDF_I(inode)->i_location; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 966 | struct fid *fid = (struct fid *)fh; |
| 967 | int type = FILEID_UDF_WITHOUT_PARENT; |
| 968 | |
Al Viro | b0b0382 | 2012-04-02 14:34:06 -0400 | [diff] [blame] | 969 | if (parent && (len < 5)) { |
Aneesh Kumar K.V | 5fe0c23 | 2011-01-29 18:43:25 +0530 | [diff] [blame] | 970 | *lenp = 5; |
Namjae Jeon | 94e07a75 | 2013-02-17 15:48:11 +0900 | [diff] [blame] | 971 | return FILEID_INVALID; |
Aneesh Kumar K.V | 5fe0c23 | 2011-01-29 18:43:25 +0530 | [diff] [blame] | 972 | } else if (len < 3) { |
| 973 | *lenp = 3; |
Namjae Jeon | 94e07a75 | 2013-02-17 15:48:11 +0900 | [diff] [blame] | 974 | return FILEID_INVALID; |
Aneesh Kumar K.V | 5fe0c23 | 2011-01-29 18:43:25 +0530 | [diff] [blame] | 975 | } |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 976 | |
| 977 | *lenp = 3; |
| 978 | fid->udf.block = location.logicalBlockNum; |
| 979 | fid->udf.partref = location.partitionReferenceNum; |
Mathias Krause | 0143fc5 | 2012-07-12 08:46:55 +0200 | [diff] [blame] | 980 | fid->udf.parent_partref = 0; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 981 | fid->udf.generation = inode->i_generation; |
| 982 | |
Al Viro | b0b0382 | 2012-04-02 14:34:06 -0400 | [diff] [blame] | 983 | if (parent) { |
| 984 | location = UDF_I(parent)->i_location; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 985 | fid->udf.parent_block = location.logicalBlockNum; |
| 986 | fid->udf.parent_partref = location.partitionReferenceNum; |
| 987 | fid->udf.parent_generation = inode->i_generation; |
Rasmus Rohde | 221e583 | 2008-04-30 17:22:06 +0200 | [diff] [blame] | 988 | *lenp = 5; |
| 989 | type = FILEID_UDF_WITH_PARENT; |
| 990 | } |
| 991 | |
| 992 | return type; |
| 993 | } |
| 994 | |
| 995 | const struct export_operations udf_export_ops = { |
| 996 | .encode_fh = udf_encode_fh, |
| 997 | .fh_to_dentry = udf_fh_to_dentry, |
| 998 | .fh_to_parent = udf_fh_to_parent, |
| 999 | .get_parent = udf_get_parent, |
| 1000 | }; |
| 1001 | |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 1002 | const struct inode_operations udf_dir_inode_operations = { |
Cyrill Gorcunov | 28de794 | 2007-07-21 04:37:18 -0700 | [diff] [blame] | 1003 | .lookup = udf_lookup, |
| 1004 | .create = udf_create, |
| 1005 | .link = udf_link, |
| 1006 | .unlink = udf_unlink, |
| 1007 | .symlink = udf_symlink, |
| 1008 | .mkdir = udf_mkdir, |
| 1009 | .rmdir = udf_rmdir, |
| 1010 | .mknod = udf_mknod, |
| 1011 | .rename = udf_rename, |
Al Viro | 656d09d | 2013-06-12 09:35:33 +0400 | [diff] [blame] | 1012 | .tmpfile = udf_tmpfile, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | }; |