Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/ufs/namei.c |
| 3 | * |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 4 | * Migration to usage of "page cache" on May 2006 by |
| 5 | * Evgeniy Dushistov <dushistov@mail.ru> based on ext2 code base. |
| 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Copyright (C) 1998 |
| 8 | * Daniel Pirkl <daniel.pirkl@email.cz> |
| 9 | * Charles University, Faculty of Mathematics and Physics |
| 10 | * |
| 11 | * from |
| 12 | * |
| 13 | * linux/fs/ext2/namei.c |
| 14 | * |
| 15 | * Copyright (C) 1992, 1993, 1994, 1995 |
| 16 | * Remy Card (card@masi.ibp.fr) |
| 17 | * Laboratoire MASI - Institut Blaise Pascal |
| 18 | * Universite Pierre et Marie Curie (Paris VI) |
| 19 | * |
| 20 | * from |
| 21 | * |
| 22 | * linux/fs/minix/namei.c |
| 23 | * |
| 24 | * Copyright (C) 1991, 1992 Linus Torvalds |
| 25 | * |
| 26 | * Big-endian to little-endian byte-swapping/bitmaps by |
| 27 | * David S. Miller (davem@caip.rutgers.edu), 1995 |
| 28 | */ |
| 29 | |
| 30 | #include <linux/time.h> |
| 31 | #include <linux/fs.h> |
Mike Frysinger | e542059 | 2008-02-08 04:21:31 -0800 | [diff] [blame] | 32 | |
| 33 | #include "ufs_fs.h" |
Christoph Hellwig | bcd6d4e | 2007-10-16 23:26:51 -0700 | [diff] [blame] | 34 | #include "ufs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "util.h" |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | static inline int ufs_add_nondir(struct dentry *dentry, struct inode *inode) |
| 38 | { |
| 39 | int err = ufs_add_link(dentry, inode); |
| 40 | if (!err) { |
Al Viro | e4502c6 | 2014-09-26 21:17:52 -0400 | [diff] [blame] | 41 | unlock_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | d_instantiate(dentry, inode); |
| 43 | return 0; |
| 44 | } |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 45 | inode_dec_link_count(inode); |
Al Viro | e4502c6 | 2014-09-26 21:17:52 -0400 | [diff] [blame] | 46 | unlock_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | iput(inode); |
| 48 | return err; |
| 49 | } |
| 50 | |
Al Viro | 00cd8dd | 2012-06-10 17:13:09 -0400 | [diff] [blame] | 51 | static struct dentry *ufs_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | { |
| 53 | struct inode * inode = NULL; |
| 54 | ino_t ino; |
| 55 | |
| 56 | if (dentry->d_name.len > UFS_MAXNAMLEN) |
| 57 | return ERR_PTR(-ENAMETOOLONG); |
| 58 | |
Alexey Dobriyan | 0804970 | 2009-12-15 16:46:50 -0800 | [diff] [blame] | 59 | ino = ufs_inode_by_name(dir, &dentry->d_name); |
Al Viro | 642c937 | 2011-07-17 10:07:34 -0400 | [diff] [blame] | 60 | if (ino) |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 61 | inode = ufs_iget(dir->i_sb, ino); |
Al Viro | 642c937 | 2011-07-17 10:07:34 -0400 | [diff] [blame] | 62 | return d_splice_alias(inode, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | /* |
| 66 | * By the time this is called, we already have created |
| 67 | * the directory cache entry for the new file, but it |
| 68 | * is so far negative - it has no inode. |
| 69 | * |
| 70 | * If the create succeeds, we fill in the inode information |
| 71 | * with d_instantiate(). |
| 72 | */ |
Al Viro | 4acdaf2 | 2011-07-26 01:42:34 -0400 | [diff] [blame] | 73 | static int ufs_create (struct inode * dir, struct dentry * dentry, umode_t mode, |
Al Viro | ebfc3b4 | 2012-06-10 18:05:36 -0400 | [diff] [blame] | 74 | bool excl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | { |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 76 | struct inode *inode; |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 77 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 78 | inode = ufs_new_inode(dir, mode); |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 79 | if (IS_ERR(inode)) |
| 80 | return PTR_ERR(inode); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 81 | |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 82 | inode->i_op = &ufs_file_inode_operations; |
| 83 | inode->i_fop = &ufs_file_operations; |
| 84 | inode->i_mapping->a_ops = &ufs_aops; |
| 85 | mark_inode_dirty(inode); |
| 86 | return ufs_add_nondir(dentry, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | } |
| 88 | |
Al Viro | 1a67aaf | 2011-07-26 01:52:52 -0400 | [diff] [blame] | 89 | static int ufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | { |
| 91 | struct inode *inode; |
| 92 | int err; |
| 93 | |
| 94 | if (!old_valid_dev(rdev)) |
| 95 | return -EINVAL; |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | inode = ufs_new_inode(dir, mode); |
| 98 | err = PTR_ERR(inode); |
| 99 | if (!IS_ERR(inode)) { |
| 100 | init_special_inode(inode, mode, rdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | ufs_set_inode_dev(inode->i_sb, UFS_I(inode), rdev); |
| 102 | mark_inode_dirty(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | err = ufs_add_nondir(dentry, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | } |
| 105 | return err; |
| 106 | } |
| 107 | |
| 108 | static int ufs_symlink (struct inode * dir, struct dentry * dentry, |
| 109 | const char * symname) |
| 110 | { |
| 111 | struct super_block * sb = dir->i_sb; |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 112 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | unsigned l = strlen(symname)+1; |
| 114 | struct inode * inode; |
| 115 | |
| 116 | if (l > sb->s_blocksize) |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 117 | return -ENAMETOOLONG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
| 120 | err = PTR_ERR(inode); |
| 121 | if (IS_ERR(inode)) |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 122 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) { |
| 125 | /* slow symlink */ |
Al Viro | 9cdce3c | 2015-11-15 18:24:17 -0500 | [diff] [blame] | 126 | inode->i_op = &page_symlink_inode_operations; |
Al Viro | 21fc61c | 2015-11-17 01:07:57 -0500 | [diff] [blame^] | 127 | inode_nohighmem(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | inode->i_mapping->a_ops = &ufs_aops; |
| 129 | err = page_symlink(inode, symname, l); |
| 130 | if (err) |
| 131 | goto out_fail; |
| 132 | } else { |
| 133 | /* fast symlink */ |
Al Viro | 9cdce3c | 2015-11-15 18:24:17 -0500 | [diff] [blame] | 134 | inode->i_op = &simple_symlink_inode_operations; |
Al Viro | 4b8061a | 2015-05-02 10:28:56 -0400 | [diff] [blame] | 135 | inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; |
| 136 | memcpy(inode->i_link, symname, l); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | inode->i_size = l-1; |
| 138 | } |
| 139 | mark_inode_dirty(inode); |
| 140 | |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 141 | return ufs_add_nondir(dentry, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | out_fail: |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 144 | inode_dec_link_count(inode); |
Al Viro | e4502c6 | 2014-09-26 21:17:52 -0400 | [diff] [blame] | 145 | unlock_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | iput(inode); |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 147 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | static int ufs_link (struct dentry * old_dentry, struct inode * dir, |
| 151 | struct dentry *dentry) |
| 152 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 153 | struct inode *inode = d_inode(old_dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | int error; |
| 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | inode->i_ctime = CURRENT_TIME_SEC; |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 157 | inode_inc_link_count(inode); |
Al Viro | 7de9c6ee | 2010-10-23 11:11:40 -0400 | [diff] [blame] | 158 | ihold(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
Jan Kara | 12ecbb4 | 2015-06-01 14:52:04 +0200 | [diff] [blame] | 160 | error = ufs_add_link(dentry, inode); |
| 161 | if (error) { |
| 162 | inode_dec_link_count(inode); |
| 163 | iput(inode); |
| 164 | } else |
| 165 | d_instantiate(dentry, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | return error; |
| 167 | } |
| 168 | |
Al Viro | 18bb1db | 2011-07-26 01:41:39 -0400 | [diff] [blame] | 169 | static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | { |
| 171 | struct inode * inode; |
Al Viro | 8de5277 | 2012-02-06 12:45:27 -0500 | [diff] [blame] | 172 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Fabian Frederick | 13b987e | 2015-06-10 10:09:32 +1000 | [diff] [blame] | 174 | inode_inc_link_count(dir); |
| 175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | inode = ufs_new_inode(dir, S_IFDIR|mode); |
Fabian Frederick | 13b987e | 2015-06-10 10:09:32 +1000 | [diff] [blame] | 177 | err = PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | if (IS_ERR(inode)) |
Fabian Frederick | 13b987e | 2015-06-10 10:09:32 +1000 | [diff] [blame] | 179 | goto out_dir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
| 181 | inode->i_op = &ufs_dir_inode_operations; |
| 182 | inode->i_fop = &ufs_dir_operations; |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 183 | inode->i_mapping->a_ops = &ufs_aops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 185 | inode_inc_link_count(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | err = ufs_make_empty(inode, dir); |
| 188 | if (err) |
| 189 | goto out_fail; |
| 190 | |
| 191 | err = ufs_add_link(dentry, inode); |
| 192 | if (err) |
| 193 | goto out_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Jan Kara | 514d748 | 2015-06-02 11:26:34 +0200 | [diff] [blame] | 195 | unlock_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | d_instantiate(dentry, inode); |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 197 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | out_fail: |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 200 | inode_dec_link_count(inode); |
| 201 | inode_dec_link_count(inode); |
Al Viro | e4502c6 | 2014-09-26 21:17:52 -0400 | [diff] [blame] | 202 | unlock_new_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | iput (inode); |
Fabian Frederick | 13b987e | 2015-06-10 10:09:32 +1000 | [diff] [blame] | 204 | out_dir: |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 205 | inode_dec_link_count(dir); |
Al Viro | a50e4a0 | 2015-06-16 01:50:43 -0400 | [diff] [blame] | 206 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | } |
| 208 | |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 209 | static int ufs_unlink(struct inode *dir, struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 211 | struct inode * inode = d_inode(dentry); |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 212 | struct ufs_dir_entry *de; |
| 213 | struct page *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | int err = -ENOENT; |
| 215 | |
Alexey Dobriyan | 0804970 | 2009-12-15 16:46:50 -0800 | [diff] [blame] | 216 | de = ufs_find_entry(dir, &dentry->d_name, &page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | if (!de) |
| 218 | goto out; |
| 219 | |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 220 | err = ufs_delete_entry(dir, de, page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | if (err) |
| 222 | goto out; |
| 223 | |
| 224 | inode->i_ctime = dir->i_ctime; |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 225 | inode_dec_link_count(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | err = 0; |
| 227 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | return err; |
| 229 | } |
| 230 | |
| 231 | static int ufs_rmdir (struct inode * dir, struct dentry *dentry) |
| 232 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 233 | struct inode * inode = d_inode(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | int err= -ENOTEMPTY; |
| 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (ufs_empty_dir (inode)) { |
| 237 | err = ufs_unlink(dir, dentry); |
| 238 | if (!err) { |
| 239 | inode->i_size = 0; |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 240 | inode_dec_link_count(inode); |
| 241 | inode_dec_link_count(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | } |
| 243 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | return err; |
| 245 | } |
| 246 | |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 247 | static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry, |
| 248 | struct inode *new_dir, struct dentry *new_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 250 | struct inode *old_inode = d_inode(old_dentry); |
| 251 | struct inode *new_inode = d_inode(new_dentry); |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 252 | struct page *dir_page = NULL; |
| 253 | struct ufs_dir_entry * dir_de = NULL; |
| 254 | struct page *old_page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | struct ufs_dir_entry *old_de; |
| 256 | int err = -ENOENT; |
| 257 | |
Alexey Dobriyan | 0804970 | 2009-12-15 16:46:50 -0800 | [diff] [blame] | 258 | old_de = ufs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | if (!old_de) |
| 260 | goto out; |
| 261 | |
| 262 | if (S_ISDIR(old_inode->i_mode)) { |
| 263 | err = -EIO; |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 264 | dir_de = ufs_dotdot(old_inode, &dir_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | if (!dir_de) |
| 266 | goto out_old; |
| 267 | } |
| 268 | |
| 269 | if (new_inode) { |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 270 | struct page *new_page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | struct ufs_dir_entry *new_de; |
| 272 | |
| 273 | err = -ENOTEMPTY; |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 274 | if (dir_de && !ufs_empty_dir(new_inode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | goto out_dir; |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | err = -ENOENT; |
Alexey Dobriyan | 0804970 | 2009-12-15 16:46:50 -0800 | [diff] [blame] | 278 | new_de = ufs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | if (!new_de) |
| 280 | goto out_dir; |
Al Viro | 70d45cd | 2015-06-16 01:56:23 -0400 | [diff] [blame] | 281 | ufs_set_link(new_dir, new_de, new_page, old_inode, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | new_inode->i_ctime = CURRENT_TIME_SEC; |
| 283 | if (dir_de) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 284 | drop_nlink(new_inode); |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 285 | inode_dec_link_count(new_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | err = ufs_add_link(new_dentry, old_inode); |
Al Viro | 37750cd | 2011-03-02 09:40:21 -0500 | [diff] [blame] | 288 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | goto out_dir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | if (dir_de) |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 291 | inode_inc_link_count(new_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 294 | /* |
| 295 | * Like most other Unix systems, set the ctime for inodes on a |
| 296 | * rename. |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 297 | */ |
| 298 | old_inode->i_ctime = CURRENT_TIME_SEC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 300 | ufs_delete_entry(old_dir, old_de, old_page); |
Al Viro | 37750cd | 2011-03-02 09:40:21 -0500 | [diff] [blame] | 301 | mark_inode_dirty(old_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | if (dir_de) { |
Al Viro | 70d45cd | 2015-06-16 01:56:23 -0400 | [diff] [blame] | 304 | if (old_dir != new_dir) |
| 305 | ufs_set_link(old_inode, dir_de, dir_page, new_dir, 0); |
| 306 | else { |
| 307 | kunmap(dir_page); |
| 308 | page_cache_release(dir_page); |
| 309 | } |
Alexey Dobriyan | 3257545 | 2006-03-23 03:00:53 -0800 | [diff] [blame] | 310 | inode_dec_link_count(old_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | return 0; |
| 313 | |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | out_dir: |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 316 | if (dir_de) { |
| 317 | kunmap(dir_page); |
| 318 | page_cache_release(dir_page); |
| 319 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | out_old: |
Evgeniy Dushistov | b71034e | 2006-06-25 05:47:22 -0700 | [diff] [blame] | 321 | kunmap(old_page); |
| 322 | page_cache_release(old_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | return err; |
| 325 | } |
| 326 | |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 327 | const struct inode_operations ufs_dir_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | .create = ufs_create, |
| 329 | .lookup = ufs_lookup, |
| 330 | .link = ufs_link, |
| 331 | .unlink = ufs_unlink, |
| 332 | .symlink = ufs_symlink, |
| 333 | .mkdir = ufs_mkdir, |
| 334 | .rmdir = ufs_rmdir, |
| 335 | .mknod = ufs_mknod, |
| 336 | .rename = ufs_rename, |
| 337 | }; |