Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
| 19 | #include "xfs_fs.h" |
Dave Chinner | 70a9883c | 2013-10-23 10:36:05 +1100 | [diff] [blame] | 20 | #include "xfs_shared.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 21 | #include "xfs_format.h" |
| 22 | #include "xfs_log_format.h" |
| 23 | #include "xfs_trans_resv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include "xfs_sb.h" |
| 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_mount.h" |
Dave Chinner | 5706278 | 2013-10-15 09:17:51 +1100 | [diff] [blame] | 27 | #include "xfs_da_format.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include "xfs_inode.h" |
| 29 | #include "xfs_bmap.h" |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 30 | #include "xfs_bmap_util.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 31 | #include "xfs_acl.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 32 | #include "xfs_quota.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_error.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "xfs_attr.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 35 | #include "xfs_trans.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 36 | #include "xfs_trace.h" |
Brian Foster | 27b5286 | 2012-11-06 09:50:38 -0500 | [diff] [blame] | 37 | #include "xfs_icache.h" |
Dave Chinner | c24b5df | 2013-08-12 20:49:45 +1000 | [diff] [blame] | 38 | #include "xfs_symlink.h" |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 39 | #include "xfs_da_btree.h" |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 40 | #include "xfs_dir2_priv.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 41 | #include "xfs_dinode.h" |
Zhi Yong Wu | 99b6436 | 2013-12-18 08:22:40 +0800 | [diff] [blame] | 42 | #include "xfs_trans_space.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Randy Dunlap | 16f7e0f | 2006-01-11 12:17:46 -0800 | [diff] [blame] | 44 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/xattr.h> |
| 46 | #include <linux/namei.h> |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame] | 47 | #include <linux/posix_acl.h> |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 48 | #include <linux/security.h> |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 49 | #include <linux/fiemap.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 50 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Dave Chinner | 93a8614 | 2014-02-27 16:51:39 +1100 | [diff] [blame] | 52 | /* |
| 53 | * Directories have different lock order w.r.t. mmap_sem compared to regular |
| 54 | * files. This is due to readdir potentially triggering page faults on a user |
| 55 | * buffer inside filldir(), and this happens with the ilock on the directory |
| 56 | * held. For regular files, the lock order is the other way around - the |
| 57 | * mmap_sem is taken during the page fault, and then we lock the ilock to do |
| 58 | * block mapping. Hence we need a different class for the directory ilock so |
| 59 | * that lockdep can tell them apart. |
| 60 | */ |
| 61 | static struct lock_class_key xfs_nondir_ilock_class; |
| 62 | static struct lock_class_key xfs_dir_ilock_class; |
| 63 | |
Dave Chinner | 8d2a5e6 | 2012-03-07 04:50:19 +0000 | [diff] [blame] | 64 | static int |
| 65 | xfs_initxattrs( |
| 66 | struct inode *inode, |
| 67 | const struct xattr *xattr_array, |
| 68 | void *fs_info) |
Mimi Zohar | 9d8f13b | 2011-06-06 15:29:25 -0400 | [diff] [blame] | 69 | { |
Dave Chinner | 8d2a5e6 | 2012-03-07 04:50:19 +0000 | [diff] [blame] | 70 | const struct xattr *xattr; |
| 71 | struct xfs_inode *ip = XFS_I(inode); |
| 72 | int error = 0; |
Mimi Zohar | 9d8f13b | 2011-06-06 15:29:25 -0400 | [diff] [blame] | 73 | |
| 74 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { |
| 75 | error = xfs_attr_set(ip, xattr->name, xattr->value, |
| 76 | xattr->value_len, ATTR_SECURE); |
| 77 | if (error < 0) |
| 78 | break; |
| 79 | } |
| 80 | return error; |
| 81 | } |
| 82 | |
David Chinner | 5d51eff | 2007-11-23 16:29:18 +1100 | [diff] [blame] | 83 | /* |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 84 | * Hook in SELinux. This is not quite correct yet, what we really need |
| 85 | * here (as we do for default ACLs) is a mechanism by which creation of |
| 86 | * these attrs can be journalled at inode creation time (along with the |
| 87 | * inode, of course, such that log replay can't cause these to be lost). |
| 88 | */ |
Mimi Zohar | 9d8f13b | 2011-06-06 15:29:25 -0400 | [diff] [blame] | 89 | |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 90 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 91 | xfs_init_security( |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 92 | struct inode *inode, |
Eric Paris | 2a7dba3 | 2011-02-01 11:05:39 -0500 | [diff] [blame] | 93 | struct inode *dir, |
| 94 | const struct qstr *qstr) |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 95 | { |
Mimi Zohar | 9d8f13b | 2011-06-06 15:29:25 -0400 | [diff] [blame] | 96 | return security_inode_init_security(inode, dir, qstr, |
| 97 | &xfs_initxattrs, NULL); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 98 | } |
| 99 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 100 | static void |
| 101 | xfs_dentry_to_name( |
| 102 | struct xfs_name *namep, |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 103 | struct dentry *dentry, |
| 104 | int mode) |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 105 | { |
| 106 | namep->name = dentry->d_name.name; |
| 107 | namep->len = dentry->d_name.len; |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 108 | namep->type = xfs_mode_to_ftype[(mode & S_IFMT) >> S_SHIFT]; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 109 | } |
| 110 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 111 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 112 | xfs_cleanup_inode( |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 113 | struct inode *dir, |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 114 | struct inode *inode, |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 115 | struct dentry *dentry) |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 116 | { |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 117 | struct xfs_name teardown; |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 118 | |
| 119 | /* Oh, the horror. |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 120 | * If we can't add the ACL or we fail in |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 121 | * xfs_init_security we must back out. |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 122 | * ENOSPC can hit here, among other things. |
| 123 | */ |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 124 | xfs_dentry_to_name(&teardown, dentry, 0); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 125 | |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 126 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 127 | } |
| 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | STATIC int |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 130 | xfs_generic_create( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | struct inode *dir, |
| 132 | struct dentry *dentry, |
Al Viro | 1a67aaf | 2011-07-26 01:52:52 -0400 | [diff] [blame] | 133 | umode_t mode, |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 134 | dev_t rdev, |
| 135 | bool tmpfile) /* unnamed file */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | { |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 137 | struct inode *inode; |
Christoph Hellwig | 979ebab | 2008-03-06 13:46:05 +1100 | [diff] [blame] | 138 | struct xfs_inode *ip = NULL; |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 139 | struct posix_acl *default_acl, *acl; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 140 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | int error; |
| 142 | |
| 143 | /* |
| 144 | * Irix uses Missed'em'V split, but doesn't want to see |
| 145 | * the upper 5 bits of (14bit) major. |
| 146 | */ |
Christoph Hellwig | 517b5e8 | 2009-02-09 08:38:02 +0100 | [diff] [blame] | 147 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
| 148 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) |
| 149 | return -EINVAL; |
| 150 | rdev = sysv_encode_dev(rdev); |
| 151 | } else { |
| 152 | rdev = 0; |
| 153 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 155 | error = posix_acl_create(dir, &mode, &default_acl, &acl); |
| 156 | if (error) |
| 157 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 159 | if (!tmpfile) { |
| 160 | xfs_dentry_to_name(&name, dentry, mode); |
| 161 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
| 162 | } else { |
| 163 | error = xfs_create_tmpfile(XFS_I(dir), dentry, mode, &ip); |
| 164 | } |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 165 | if (unlikely(error)) |
| 166 | goto out_free_acl; |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 167 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 168 | inode = VFS_I(ip); |
Christoph Hellwig | 979ebab | 2008-03-06 13:46:05 +1100 | [diff] [blame] | 169 | |
Eric Paris | 2a7dba3 | 2011-02-01 11:05:39 -0500 | [diff] [blame] | 170 | error = xfs_init_security(inode, dir, &dentry->d_name); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 171 | if (unlikely(error)) |
| 172 | goto out_cleanup_inode; |
| 173 | |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 174 | #ifdef CONFIG_XFS_POSIX_ACL |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 175 | if (default_acl) { |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 176 | error = xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); |
| 177 | if (error) |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 178 | goto out_cleanup_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | } |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 180 | if (acl) { |
| 181 | error = xfs_set_acl(inode, acl, ACL_TYPE_ACCESS); |
| 182 | if (error) |
| 183 | goto out_cleanup_inode; |
| 184 | } |
| 185 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 187 | if (tmpfile) |
| 188 | d_tmpfile(dentry, inode); |
| 189 | else |
| 190 | d_instantiate(dentry, inode); |
| 191 | |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 192 | out_free_acl: |
| 193 | if (default_acl) |
| 194 | posix_acl_release(default_acl); |
| 195 | if (acl) |
| 196 | posix_acl_release(acl); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 197 | return -error; |
| 198 | |
| 199 | out_cleanup_inode: |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 200 | if (!tmpfile) |
| 201 | xfs_cleanup_inode(dir, inode, dentry); |
| 202 | iput(inode); |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 203 | goto out_free_acl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | STATIC int |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 207 | xfs_vn_mknod( |
| 208 | struct inode *dir, |
| 209 | struct dentry *dentry, |
| 210 | umode_t mode, |
| 211 | dev_t rdev) |
| 212 | { |
| 213 | return xfs_generic_create(dir, dentry, mode, rdev, false); |
| 214 | } |
| 215 | |
| 216 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 217 | xfs_vn_create( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | struct inode *dir, |
| 219 | struct dentry *dentry, |
Al Viro | 4acdaf2 | 2011-07-26 01:42:34 -0400 | [diff] [blame] | 220 | umode_t mode, |
Al Viro | ebfc3b4 | 2012-06-10 18:05:36 -0400 | [diff] [blame] | 221 | bool flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 223 | return xfs_vn_mknod(dir, dentry, mode, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 227 | xfs_vn_mkdir( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | struct inode *dir, |
| 229 | struct dentry *dentry, |
Al Viro | 18bb1db | 2011-07-26 01:41:39 -0400 | [diff] [blame] | 230 | umode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 232 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | STATIC struct dentry * |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 236 | xfs_vn_lookup( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | struct inode *dir, |
| 238 | struct dentry *dentry, |
Al Viro | 00cd8dd | 2012-06-10 17:13:09 -0400 | [diff] [blame] | 239 | unsigned int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | { |
Christoph Hellwig | ef1f5e7 | 2008-03-06 13:46:25 +1100 | [diff] [blame] | 241 | struct xfs_inode *cip; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 242 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | int error; |
| 244 | |
| 245 | if (dentry->d_name.len >= MAXNAMELEN) |
| 246 | return ERR_PTR(-ENAMETOOLONG); |
| 247 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 248 | xfs_dentry_to_name(&name, dentry, 0); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 249 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 250 | if (unlikely(error)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | if (unlikely(error != ENOENT)) |
| 252 | return ERR_PTR(-error); |
| 253 | d_add(dentry, NULL); |
| 254 | return NULL; |
| 255 | } |
| 256 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 257 | return d_splice_alias(VFS_I(cip), dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
| 259 | |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 260 | STATIC struct dentry * |
| 261 | xfs_vn_ci_lookup( |
| 262 | struct inode *dir, |
| 263 | struct dentry *dentry, |
Al Viro | 00cd8dd | 2012-06-10 17:13:09 -0400 | [diff] [blame] | 264 | unsigned int flags) |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 265 | { |
| 266 | struct xfs_inode *ip; |
| 267 | struct xfs_name xname; |
| 268 | struct xfs_name ci_name; |
| 269 | struct qstr dname; |
| 270 | int error; |
| 271 | |
| 272 | if (dentry->d_name.len >= MAXNAMELEN) |
| 273 | return ERR_PTR(-ENAMETOOLONG); |
| 274 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 275 | xfs_dentry_to_name(&xname, dentry, 0); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 276 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); |
| 277 | if (unlikely(error)) { |
| 278 | if (unlikely(error != ENOENT)) |
| 279 | return ERR_PTR(-error); |
Barry Naujok | 866d5dc | 2008-05-22 17:21:40 +1000 | [diff] [blame] | 280 | /* |
| 281 | * call d_add(dentry, NULL) here when d_drop_negative_children |
| 282 | * is called in xfs_vn_mknod (ie. allow negative dentries |
| 283 | * with CI filesystems). |
| 284 | */ |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 285 | return NULL; |
| 286 | } |
| 287 | |
| 288 | /* if exact match, just splice and exit */ |
| 289 | if (!ci_name.name) |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 290 | return d_splice_alias(VFS_I(ip), dentry); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 291 | |
| 292 | /* else case-insensitive match... */ |
| 293 | dname.name = ci_name.name; |
| 294 | dname.len = ci_name.len; |
Christoph Hellwig | e45b590 | 2008-08-07 23:49:07 +0200 | [diff] [blame] | 295 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 296 | kmem_free(ci_name.name); |
| 297 | return dentry; |
| 298 | } |
| 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 301 | xfs_vn_link( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | struct dentry *old_dentry, |
| 303 | struct inode *dir, |
| 304 | struct dentry *dentry) |
| 305 | { |
Christoph Hellwig | d9424b3 | 2008-12-03 12:20:27 +0100 | [diff] [blame] | 306 | struct inode *inode = old_dentry->d_inode; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 307 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | int error; |
| 309 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 310 | xfs_dentry_to_name(&name, dentry, inode->i_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 312 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
Christoph Hellwig | d9424b3 | 2008-12-03 12:20:27 +0100 | [diff] [blame] | 313 | if (unlikely(error)) |
Christoph Hellwig | a3da789 | 2008-03-06 13:46:12 +1100 | [diff] [blame] | 314 | return -error; |
Christoph Hellwig | a3da789 | 2008-03-06 13:46:12 +1100 | [diff] [blame] | 315 | |
Al Viro | 7de9c6ee | 2010-10-23 11:11:40 -0400 | [diff] [blame] | 316 | ihold(inode); |
Christoph Hellwig | a3da789 | 2008-03-06 13:46:12 +1100 | [diff] [blame] | 317 | d_instantiate(dentry, inode); |
| 318 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
| 321 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 322 | xfs_vn_unlink( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | struct inode *dir, |
| 324 | struct dentry *dentry) |
| 325 | { |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 326 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | int error; |
| 328 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 329 | xfs_dentry_to_name(&name, dentry, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Christoph Hellwig | e570070 | 2008-06-23 13:25:25 +1000 | [diff] [blame] | 331 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
| 332 | if (error) |
| 333 | return error; |
| 334 | |
| 335 | /* |
| 336 | * With unlink, the VFS makes the dentry "negative": no inode, |
| 337 | * but still hashed. This is incompatible with case-insensitive |
| 338 | * mode, so invalidate (unhash) the dentry in CI-mode. |
| 339 | */ |
| 340 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) |
| 341 | d_invalidate(dentry); |
| 342 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 346 | xfs_vn_symlink( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | struct inode *dir, |
| 348 | struct dentry *dentry, |
| 349 | const char *symname) |
| 350 | { |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 351 | struct inode *inode; |
| 352 | struct xfs_inode *cip = NULL; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 353 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | int error; |
Al Viro | 576b1d6 | 2011-07-26 02:50:15 -0400 | [diff] [blame] | 355 | umode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame] | 357 | mode = S_IFLNK | |
Al Viro | ce3b0f8 | 2009-03-29 19:08:22 -0400 | [diff] [blame] | 358 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 359 | xfs_dentry_to_name(&name, dentry, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Christoph Hellwig | 6c77b0e | 2010-10-06 18:41:17 +0000 | [diff] [blame] | 361 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 362 | if (unlikely(error)) |
| 363 | goto out; |
| 364 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 365 | inode = VFS_I(cip); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 366 | |
Eric Paris | 2a7dba3 | 2011-02-01 11:05:39 -0500 | [diff] [blame] | 367 | error = xfs_init_security(inode, dir, &dentry->d_name); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 368 | if (unlikely(error)) |
| 369 | goto out_cleanup_inode; |
| 370 | |
| 371 | d_instantiate(dentry, inode); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 372 | return 0; |
| 373 | |
| 374 | out_cleanup_inode: |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 375 | xfs_cleanup_inode(dir, inode, dentry); |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 376 | iput(inode); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 377 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | return -error; |
| 379 | } |
| 380 | |
| 381 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 382 | xfs_vn_rename( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | struct inode *odir, |
| 384 | struct dentry *odentry, |
| 385 | struct inode *ndir, |
| 386 | struct dentry *ndentry) |
| 387 | { |
| 388 | struct inode *new_inode = ndentry->d_inode; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 389 | struct xfs_name oname; |
| 390 | struct xfs_name nname; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 392 | xfs_dentry_to_name(&oname, odentry, 0); |
| 393 | xfs_dentry_to_name(&nname, ndentry, odentry->d_inode->i_mode); |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 394 | |
Christoph Hellwig | e570070 | 2008-06-23 13:25:25 +1000 | [diff] [blame] | 395 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 396 | XFS_I(ndir), &nname, new_inode ? |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 397 | XFS_I(new_inode) : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | /* |
| 401 | * careful here - this function can get called recursively, so |
| 402 | * we need to be very careful about how much stack we use. |
| 403 | * uio is kmalloced for this reason... |
| 404 | */ |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 405 | STATIC void * |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 406 | xfs_vn_follow_link( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | struct dentry *dentry, |
| 408 | struct nameidata *nd) |
| 409 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | char *link; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 411 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Panagiotis Issaris | f52720c | 2006-09-27 01:49:39 -0700 | [diff] [blame] | 413 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 414 | if (!link) |
| 415 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 417 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 418 | if (unlikely(error)) |
| 419 | goto out_kfree; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
| 421 | nd_set_link(nd, link); |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 422 | return NULL; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 423 | |
| 424 | out_kfree: |
| 425 | kfree(link); |
| 426 | out_err: |
| 427 | nd_set_link(nd, ERR_PTR(error)); |
| 428 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | |
Christoph Hellwig | 4576758 | 2008-02-05 12:13:24 +1100 | [diff] [blame] | 431 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 432 | xfs_vn_getattr( |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 433 | struct vfsmount *mnt, |
| 434 | struct dentry *dentry, |
| 435 | struct kstat *stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | { |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 437 | struct inode *inode = dentry->d_inode; |
| 438 | struct xfs_inode *ip = XFS_I(inode); |
| 439 | struct xfs_mount *mp = ip->i_mount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
Christoph Hellwig | cca28fb | 2010-06-24 11:57:09 +1000 | [diff] [blame] | 441 | trace_xfs_getattr(ip); |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 442 | |
| 443 | if (XFS_FORCED_SHUTDOWN(mp)) |
Mitsuo Hayasaka | ed32201 | 2011-09-17 13:38:38 +0000 | [diff] [blame] | 444 | return -XFS_ERROR(EIO); |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 445 | |
| 446 | stat->size = XFS_ISIZE(ip); |
| 447 | stat->dev = inode->i_sb->s_dev; |
| 448 | stat->mode = ip->i_d.di_mode; |
| 449 | stat->nlink = ip->i_d.di_nlink; |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 450 | stat->uid = inode->i_uid; |
| 451 | stat->gid = inode->i_gid; |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 452 | stat->ino = ip->i_ino; |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 453 | stat->atime = inode->i_atime; |
Christoph Hellwig | f9581b1 | 2009-10-06 20:29:26 +0000 | [diff] [blame] | 454 | stat->mtime = inode->i_mtime; |
| 455 | stat->ctime = inode->i_ctime; |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 456 | stat->blocks = |
| 457 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); |
| 458 | |
| 459 | |
| 460 | switch (inode->i_mode & S_IFMT) { |
| 461 | case S_IFBLK: |
| 462 | case S_IFCHR: |
| 463 | stat->blksize = BLKDEV_IOSIZE; |
| 464 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| 465 | sysv_minor(ip->i_df.if_u2.if_rdev)); |
| 466 | break; |
| 467 | default: |
Eric Sandeen | 71ddabb | 2007-11-23 16:29:42 +1100 | [diff] [blame] | 468 | if (XFS_IS_REALTIME_INODE(ip)) { |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 469 | /* |
| 470 | * If the file blocks are being allocated from a |
| 471 | * realtime volume, then return the inode's realtime |
| 472 | * extent size or the realtime volume's extent size. |
| 473 | */ |
| 474 | stat->blksize = |
| 475 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; |
| 476 | } else |
| 477 | stat->blksize = xfs_preferred_iosize(mp); |
| 478 | stat->rdev = 0; |
| 479 | break; |
Nathan Scott | 69e23b9 | 2006-09-28 11:01:22 +1000 | [diff] [blame] | 480 | } |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 481 | |
| 482 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | } |
| 484 | |
Dave Chinner | 56c19e8 | 2013-05-27 16:38:25 +1000 | [diff] [blame] | 485 | static void |
| 486 | xfs_setattr_mode( |
Dave Chinner | 56c19e8 | 2013-05-27 16:38:25 +1000 | [diff] [blame] | 487 | struct xfs_inode *ip, |
| 488 | struct iattr *iattr) |
| 489 | { |
Christoph Hellwig | 0c3d88d | 2013-11-18 05:10:40 -0800 | [diff] [blame] | 490 | struct inode *inode = VFS_I(ip); |
| 491 | umode_t mode = iattr->ia_mode; |
Dave Chinner | 56c19e8 | 2013-05-27 16:38:25 +1000 | [diff] [blame] | 492 | |
Dave Chinner | 56c19e8 | 2013-05-27 16:38:25 +1000 | [diff] [blame] | 493 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
| 494 | |
Dave Chinner | 56c19e8 | 2013-05-27 16:38:25 +1000 | [diff] [blame] | 495 | ip->i_d.di_mode &= S_IFMT; |
| 496 | ip->i_d.di_mode |= mode & ~S_IFMT; |
| 497 | |
| 498 | inode->i_mode &= S_IFMT; |
| 499 | inode->i_mode |= mode & ~S_IFMT; |
| 500 | } |
| 501 | |
Christoph Hellwig | c91c46c | 2013-11-18 05:10:52 -0800 | [diff] [blame] | 502 | static void |
| 503 | xfs_setattr_time( |
| 504 | struct xfs_inode *ip, |
| 505 | struct iattr *iattr) |
| 506 | { |
| 507 | struct inode *inode = VFS_I(ip); |
| 508 | |
| 509 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
| 510 | |
| 511 | if (iattr->ia_valid & ATTR_ATIME) { |
| 512 | inode->i_atime = iattr->ia_atime; |
| 513 | ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; |
| 514 | ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; |
| 515 | } |
| 516 | if (iattr->ia_valid & ATTR_CTIME) { |
| 517 | inode->i_ctime = iattr->ia_ctime; |
| 518 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; |
| 519 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; |
| 520 | } |
| 521 | if (iattr->ia_valid & ATTR_MTIME) { |
| 522 | inode->i_mtime = iattr->ia_mtime; |
| 523 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; |
| 524 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; |
| 525 | } |
| 526 | } |
| 527 | |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 528 | int |
| 529 | xfs_setattr_nonsize( |
| 530 | struct xfs_inode *ip, |
| 531 | struct iattr *iattr, |
| 532 | int flags) |
| 533 | { |
| 534 | xfs_mount_t *mp = ip->i_mount; |
| 535 | struct inode *inode = VFS_I(ip); |
| 536 | int mask = iattr->ia_valid; |
| 537 | xfs_trans_t *tp; |
| 538 | int error; |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 539 | kuid_t uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID; |
| 540 | kgid_t gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 541 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; |
| 542 | struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; |
| 543 | |
| 544 | trace_xfs_setattr(ip); |
| 545 | |
Carlos Maiolino | 42c49d7 | 2013-06-21 14:45:53 -0300 | [diff] [blame] | 546 | /* If acls are being inherited, we already have this checked */ |
| 547 | if (!(flags & XFS_ATTR_NOACL)) { |
| 548 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
| 549 | return XFS_ERROR(EROFS); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 550 | |
Carlos Maiolino | 42c49d7 | 2013-06-21 14:45:53 -0300 | [diff] [blame] | 551 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 552 | return XFS_ERROR(EIO); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 553 | |
Carlos Maiolino | 42c49d7 | 2013-06-21 14:45:53 -0300 | [diff] [blame] | 554 | error = -inode_change_ok(inode, iattr); |
| 555 | if (error) |
| 556 | return XFS_ERROR(error); |
| 557 | } |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 558 | |
| 559 | ASSERT((mask & ATTR_SIZE) == 0); |
| 560 | |
| 561 | /* |
| 562 | * If disk quotas is on, we make sure that the dquots do exist on disk, |
| 563 | * before we start any other transactions. Trying to do this later |
| 564 | * is messy. We don't care to take a readlock to look at the ids |
| 565 | * in inode here, because we can't hold it across the trans_reserve. |
| 566 | * If the IDs do change before we take the ilock, we're covered |
| 567 | * because the i_*dquot fields will get updated anyway. |
| 568 | */ |
| 569 | if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { |
| 570 | uint qflags = 0; |
| 571 | |
| 572 | if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { |
| 573 | uid = iattr->ia_uid; |
| 574 | qflags |= XFS_QMOPT_UQUOTA; |
| 575 | } else { |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 576 | uid = inode->i_uid; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 577 | } |
| 578 | if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { |
| 579 | gid = iattr->ia_gid; |
| 580 | qflags |= XFS_QMOPT_GQUOTA; |
| 581 | } else { |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 582 | gid = inode->i_gid; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | /* |
| 586 | * We take a reference when we initialize udqp and gdqp, |
| 587 | * so it is important that we never blindly double trip on |
| 588 | * the same variable. See xfs_create() for an example. |
| 589 | */ |
| 590 | ASSERT(udqp == NULL); |
| 591 | ASSERT(gdqp == NULL); |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 592 | error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid), |
| 593 | xfs_kgid_to_gid(gid), |
| 594 | xfs_get_projid(ip), |
| 595 | qflags, &udqp, &gdqp, NULL); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 596 | if (error) |
| 597 | return error; |
| 598 | } |
| 599 | |
| 600 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); |
Jie Liu | 3d3c8b5 | 2013-08-12 20:49:59 +1000 | [diff] [blame] | 601 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 602 | if (error) |
| 603 | goto out_dqrele; |
| 604 | |
| 605 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 606 | |
| 607 | /* |
| 608 | * Change file ownership. Must be the owner or privileged. |
| 609 | */ |
| 610 | if (mask & (ATTR_UID|ATTR_GID)) { |
| 611 | /* |
| 612 | * These IDs could have changed since we last looked at them. |
| 613 | * But, we're assured that if the ownership did change |
| 614 | * while we didn't have the inode locked, inode's dquot(s) |
| 615 | * would have changed also. |
| 616 | */ |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 617 | iuid = inode->i_uid; |
| 618 | igid = inode->i_gid; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 619 | gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; |
| 620 | uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; |
| 621 | |
| 622 | /* |
| 623 | * Do a quota reservation only if uid/gid is actually |
| 624 | * going to change. |
| 625 | */ |
| 626 | if (XFS_IS_QUOTA_RUNNING(mp) && |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 627 | ((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) || |
| 628 | (XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) { |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 629 | ASSERT(tp); |
| 630 | error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 631 | NULL, capable(CAP_FOWNER) ? |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 632 | XFS_QMOPT_FORCE_RES : 0); |
| 633 | if (error) /* out of quota */ |
| 634 | goto out_trans_cancel; |
| 635 | } |
| 636 | } |
| 637 | |
Christoph Hellwig | ddc3415 | 2011-09-19 15:00:54 +0000 | [diff] [blame] | 638 | xfs_trans_ijoin(tp, ip, 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 639 | |
| 640 | /* |
| 641 | * Change file ownership. Must be the owner or privileged. |
| 642 | */ |
| 643 | if (mask & (ATTR_UID|ATTR_GID)) { |
| 644 | /* |
| 645 | * CAP_FSETID overrides the following restrictions: |
| 646 | * |
| 647 | * The set-user-ID and set-group-ID bits of a file will be |
| 648 | * cleared upon successful return from chown() |
| 649 | */ |
| 650 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && |
| 651 | !capable(CAP_FSETID)) |
| 652 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); |
| 653 | |
| 654 | /* |
| 655 | * Change the ownerships and register quota modifications |
| 656 | * in the transaction. |
| 657 | */ |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 658 | if (!uid_eq(iuid, uid)) { |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 659 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { |
| 660 | ASSERT(mask & ATTR_UID); |
| 661 | ASSERT(udqp); |
| 662 | olddquot1 = xfs_qm_vop_chown(tp, ip, |
| 663 | &ip->i_udquot, udqp); |
| 664 | } |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 665 | ip->i_d.di_uid = xfs_kuid_to_uid(uid); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 666 | inode->i_uid = uid; |
| 667 | } |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 668 | if (!gid_eq(igid, gid)) { |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 669 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { |
Jie Liu | 5a01dd5 | 2013-11-26 21:38:34 +0800 | [diff] [blame] | 670 | ASSERT(xfs_sb_version_has_pquotino(&mp->m_sb) || |
| 671 | !XFS_IS_PQUOTA_ON(mp)); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 672 | ASSERT(mask & ATTR_GID); |
| 673 | ASSERT(gdqp); |
| 674 | olddquot2 = xfs_qm_vop_chown(tp, ip, |
| 675 | &ip->i_gdquot, gdqp); |
| 676 | } |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 677 | ip->i_d.di_gid = xfs_kgid_to_gid(gid); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 678 | inode->i_gid = gid; |
| 679 | } |
| 680 | } |
| 681 | |
Dave Chinner | 56c19e8 | 2013-05-27 16:38:25 +1000 | [diff] [blame] | 682 | if (mask & ATTR_MODE) |
Christoph Hellwig | 0c3d88d | 2013-11-18 05:10:40 -0800 | [diff] [blame] | 683 | xfs_setattr_mode(ip, iattr); |
Christoph Hellwig | c91c46c | 2013-11-18 05:10:52 -0800 | [diff] [blame] | 684 | if (mask & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME)) |
| 685 | xfs_setattr_time(ip, iattr); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 686 | |
| 687 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 688 | |
| 689 | XFS_STATS_INC(xs_ig_attrchg); |
| 690 | |
| 691 | if (mp->m_flags & XFS_MOUNT_WSYNC) |
| 692 | xfs_trans_set_sync(tp); |
| 693 | error = xfs_trans_commit(tp, 0); |
| 694 | |
| 695 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 696 | |
| 697 | /* |
| 698 | * Release any dquot(s) the inode had kept before chown. |
| 699 | */ |
| 700 | xfs_qm_dqrele(olddquot1); |
| 701 | xfs_qm_dqrele(olddquot2); |
| 702 | xfs_qm_dqrele(udqp); |
| 703 | xfs_qm_dqrele(gdqp); |
| 704 | |
| 705 | if (error) |
| 706 | return XFS_ERROR(error); |
| 707 | |
| 708 | /* |
| 709 | * XXX(hch): Updating the ACL entries is not atomic vs the i_mode |
| 710 | * update. We could avoid this with linked transactions |
| 711 | * and passing down the transaction pointer all the way |
| 712 | * to attr_set. No previous user of the generic |
| 713 | * Posix ACL code seems to care about this issue either. |
| 714 | */ |
| 715 | if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 716 | error = -posix_acl_chmod(inode, inode->i_mode); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 717 | if (error) |
| 718 | return XFS_ERROR(error); |
| 719 | } |
| 720 | |
| 721 | return 0; |
| 722 | |
| 723 | out_trans_cancel: |
| 724 | xfs_trans_cancel(tp, 0); |
| 725 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 726 | out_dqrele: |
| 727 | xfs_qm_dqrele(udqp); |
| 728 | xfs_qm_dqrele(gdqp); |
| 729 | return error; |
| 730 | } |
| 731 | |
| 732 | /* |
| 733 | * Truncate file. Must have write permission and not be a directory. |
| 734 | */ |
| 735 | int |
| 736 | xfs_setattr_size( |
| 737 | struct xfs_inode *ip, |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 738 | struct iattr *iattr) |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 739 | { |
| 740 | struct xfs_mount *mp = ip->i_mount; |
| 741 | struct inode *inode = VFS_I(ip); |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 742 | xfs_off_t oldsize, newsize; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 743 | struct xfs_trans *tp; |
| 744 | int error; |
Christoph Hellwig | f38996f | 2012-03-27 10:34:48 -0400 | [diff] [blame] | 745 | uint lock_flags = 0; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 746 | uint commit_flags = 0; |
| 747 | |
| 748 | trace_xfs_setattr(ip); |
| 749 | |
| 750 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
| 751 | return XFS_ERROR(EROFS); |
| 752 | |
| 753 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 754 | return XFS_ERROR(EIO); |
| 755 | |
| 756 | error = -inode_change_ok(inode, iattr); |
| 757 | if (error) |
| 758 | return XFS_ERROR(error); |
| 759 | |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 760 | ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 761 | ASSERT(S_ISREG(ip->i_d.di_mode)); |
Christoph Hellwig | fe60a8a | 2014-02-10 10:35:22 +1100 | [diff] [blame] | 762 | ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| |
| 763 | ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 764 | |
Christoph Hellwig | ce7ae151 | 2011-12-18 20:00:11 +0000 | [diff] [blame] | 765 | oldsize = inode->i_size; |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 766 | newsize = iattr->ia_size; |
| 767 | |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 768 | /* |
| 769 | * Short circuit the truncate case for zero length files. |
| 770 | */ |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 771 | if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) { |
Christoph Hellwig | fe60a8a | 2014-02-10 10:35:22 +1100 | [diff] [blame] | 772 | if (!(iattr->ia_valid & (ATTR_CTIME|ATTR_MTIME))) |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 773 | return 0; |
Christoph Hellwig | 681b120 | 2011-07-08 14:34:26 +0200 | [diff] [blame] | 774 | |
| 775 | /* |
| 776 | * Use the regular setattr path to update the timestamps. |
| 777 | */ |
Christoph Hellwig | 681b120 | 2011-07-08 14:34:26 +0200 | [diff] [blame] | 778 | iattr->ia_valid &= ~ATTR_SIZE; |
| 779 | return xfs_setattr_nonsize(ip, iattr, 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | /* |
| 783 | * Make sure that the dquots are attached to the inode. |
| 784 | */ |
Christoph Hellwig | f38996f | 2012-03-27 10:34:48 -0400 | [diff] [blame] | 785 | error = xfs_qm_dqattach(ip, 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 786 | if (error) |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 787 | return error; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 788 | |
| 789 | /* |
| 790 | * Now we can make the changes. Before we join the inode to the |
| 791 | * transaction, take care of the part of the truncation that must be |
| 792 | * done without the inode lock. This needs to be done before joining |
| 793 | * the inode to the transaction, because the inode cannot be unlocked |
| 794 | * once it is a part of the transaction. |
| 795 | */ |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 796 | if (newsize > oldsize) { |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 797 | /* |
| 798 | * Do the first part of growing a file: zero any data in the |
| 799 | * last block that is beyond the old EOF. We need to do this |
| 800 | * before the inode is joined to the transaction to modify |
| 801 | * i_size. |
| 802 | */ |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 803 | error = xfs_zero_eof(ip, newsize, oldsize); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 804 | if (error) |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 805 | return error; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 806 | } |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 807 | |
| 808 | /* |
| 809 | * We are going to log the inode size change in this transaction so |
| 810 | * any previous writes that are beyond the on disk EOF and the new |
| 811 | * EOF that have not been written out need to be written here. If we |
| 812 | * do not write the data out, we expose ourselves to the null files |
| 813 | * problem. |
| 814 | * |
| 815 | * Only flush from the on disk size to the smaller of the in memory |
| 816 | * file size or the new size as that's the range we really care about |
| 817 | * here and prevents waiting for other data not within the range we |
| 818 | * care about here. |
| 819 | */ |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 820 | if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) { |
Dave Chinner | 4bc1ea6 | 2012-11-12 22:53:56 +1100 | [diff] [blame] | 821 | error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping, |
| 822 | ip->i_d.di_size, newsize); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 823 | if (error) |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 824 | return error; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | /* |
Christoph Hellwig | 4a06fd2 | 2011-08-23 08:28:13 +0000 | [diff] [blame] | 828 | * Wait for all direct I/O to complete. |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 829 | */ |
Christoph Hellwig | 4a06fd2 | 2011-08-23 08:28:13 +0000 | [diff] [blame] | 830 | inode_dio_wait(inode); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 831 | |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 832 | error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 833 | if (error) |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 834 | return error; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 835 | |
| 836 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); |
Jie Liu | 3d3c8b5 | 2013-08-12 20:49:59 +1000 | [diff] [blame] | 837 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 838 | if (error) |
| 839 | goto out_trans_cancel; |
| 840 | |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 841 | truncate_setsize(inode, newsize); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 842 | |
| 843 | commit_flags = XFS_TRANS_RELEASE_LOG_RES; |
| 844 | lock_flags |= XFS_ILOCK_EXCL; |
| 845 | |
| 846 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 847 | |
Christoph Hellwig | ddc3415 | 2011-09-19 15:00:54 +0000 | [diff] [blame] | 848 | xfs_trans_ijoin(tp, ip, 0); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 849 | |
| 850 | /* |
| 851 | * Only change the c/mtime if we are changing the size or we are |
| 852 | * explicitly asked to change it. This handles the semantic difference |
| 853 | * between truncate() and ftruncate() as implemented in the VFS. |
| 854 | * |
| 855 | * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a |
| 856 | * special case where we need to update the times despite not having |
| 857 | * these flags set. For all other operations the VFS set these flags |
| 858 | * explicitly if it wants a timestamp update. |
| 859 | */ |
Christoph Hellwig | fe60a8a | 2014-02-10 10:35:22 +1100 | [diff] [blame] | 860 | if (newsize != oldsize && |
| 861 | !(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) { |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 862 | iattr->ia_ctime = iattr->ia_mtime = |
| 863 | current_fs_time(inode->i_sb); |
Christoph Hellwig | fe60a8a | 2014-02-10 10:35:22 +1100 | [diff] [blame] | 864 | iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 865 | } |
| 866 | |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 867 | /* |
| 868 | * The first thing we do is set the size to new_size permanently on |
| 869 | * disk. This way we don't have to worry about anyone ever being able |
| 870 | * to look at the data being freed even in the face of a crash. |
| 871 | * What we're getting around here is the case where we free a block, it |
| 872 | * is allocated to another file, it is written to, and then we crash. |
| 873 | * If the new data gets written to the file but the log buffers |
| 874 | * containing the free and reallocation don't, then we'd end up with |
| 875 | * garbage in the blocks being freed. As long as we make the new size |
| 876 | * permanent before actually freeing any blocks it doesn't matter if |
| 877 | * they get written to. |
| 878 | */ |
| 879 | ip->i_d.di_size = newsize; |
Christoph Hellwig | 673e8e5 | 2011-12-18 20:00:04 +0000 | [diff] [blame] | 880 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 881 | |
| 882 | if (newsize <= oldsize) { |
| 883 | error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 884 | if (error) |
| 885 | goto out_trans_abort; |
| 886 | |
| 887 | /* |
| 888 | * Truncated "down", so we're removing references to old data |
| 889 | * here - if we delay flushing for a long time, we expose |
| 890 | * ourselves unduly to the notorious NULL files problem. So, |
| 891 | * we mark this inode and flush it when the file is closed, |
| 892 | * and do not wait the usual (long) time for writeout. |
| 893 | */ |
| 894 | xfs_iflags_set(ip, XFS_ITRUNCATED); |
Brian Foster | 27b5286 | 2012-11-06 09:50:38 -0500 | [diff] [blame] | 895 | |
| 896 | /* A truncate down always removes post-EOF blocks. */ |
| 897 | xfs_inode_clear_eofblocks_tag(ip); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 898 | } |
| 899 | |
Christoph Hellwig | fe60a8a | 2014-02-10 10:35:22 +1100 | [diff] [blame] | 900 | if (iattr->ia_valid & ATTR_MODE) |
Christoph Hellwig | 0c3d88d | 2013-11-18 05:10:40 -0800 | [diff] [blame] | 901 | xfs_setattr_mode(ip, iattr); |
Christoph Hellwig | fe60a8a | 2014-02-10 10:35:22 +1100 | [diff] [blame] | 902 | if (iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME)) |
Christoph Hellwig | c91c46c | 2013-11-18 05:10:52 -0800 | [diff] [blame] | 903 | xfs_setattr_time(ip, iattr); |
Christoph Hellwig | c4ed424 | 2011-07-08 14:34:23 +0200 | [diff] [blame] | 904 | |
| 905 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 906 | |
| 907 | XFS_STATS_INC(xs_ig_attrchg); |
| 908 | |
| 909 | if (mp->m_flags & XFS_MOUNT_WSYNC) |
| 910 | xfs_trans_set_sync(tp); |
| 911 | |
| 912 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); |
| 913 | out_unlock: |
| 914 | if (lock_flags) |
| 915 | xfs_iunlock(ip, lock_flags); |
| 916 | return error; |
| 917 | |
| 918 | out_trans_abort: |
| 919 | commit_flags |= XFS_TRANS_ABORT; |
| 920 | out_trans_cancel: |
| 921 | xfs_trans_cancel(tp, commit_flags); |
| 922 | goto out_unlock; |
| 923 | } |
| 924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 926 | xfs_vn_setattr( |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 927 | struct dentry *dentry, |
| 928 | struct iattr *iattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | { |
Christoph Hellwig | 76ca4c2 | 2013-10-14 07:09:35 -0700 | [diff] [blame] | 930 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
| 931 | int error; |
| 932 | |
| 933 | if (iattr->ia_valid & ATTR_SIZE) { |
| 934 | xfs_ilock(ip, XFS_IOLOCK_EXCL); |
| 935 | error = xfs_setattr_size(ip, iattr); |
| 936 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
| 937 | } else { |
| 938 | error = xfs_setattr_nonsize(ip, iattr, 0); |
| 939 | } |
| 940 | |
| 941 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | } |
| 943 | |
Christoph Hellwig | 69ff282 | 2012-06-06 17:01:28 -0400 | [diff] [blame] | 944 | STATIC int |
| 945 | xfs_vn_update_time( |
| 946 | struct inode *inode, |
| 947 | struct timespec *now, |
| 948 | int flags) |
| 949 | { |
| 950 | struct xfs_inode *ip = XFS_I(inode); |
| 951 | struct xfs_mount *mp = ip->i_mount; |
| 952 | struct xfs_trans *tp; |
| 953 | int error; |
| 954 | |
| 955 | trace_xfs_update_time(ip); |
| 956 | |
| 957 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); |
Jie Liu | 3d3c8b5 | 2013-08-12 20:49:59 +1000 | [diff] [blame] | 958 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0); |
Christoph Hellwig | 69ff282 | 2012-06-06 17:01:28 -0400 | [diff] [blame] | 959 | if (error) { |
| 960 | xfs_trans_cancel(tp, 0); |
| 961 | return -error; |
| 962 | } |
| 963 | |
| 964 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 965 | if (flags & S_CTIME) { |
| 966 | inode->i_ctime = *now; |
| 967 | ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec; |
| 968 | ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec; |
| 969 | } |
| 970 | if (flags & S_MTIME) { |
| 971 | inode->i_mtime = *now; |
| 972 | ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec; |
| 973 | ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec; |
| 974 | } |
| 975 | if (flags & S_ATIME) { |
| 976 | inode->i_atime = *now; |
| 977 | ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec; |
| 978 | ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec; |
| 979 | } |
| 980 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
| 981 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); |
| 982 | return -xfs_trans_commit(tp, 0); |
| 983 | } |
| 984 | |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 985 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
| 986 | |
| 987 | /* |
| 988 | * Call fiemap helper to fill in user data. |
| 989 | * Returns positive errors to xfs_getbmap. |
| 990 | */ |
| 991 | STATIC int |
| 992 | xfs_fiemap_format( |
| 993 | void **arg, |
| 994 | struct getbmapx *bmv, |
| 995 | int *full) |
| 996 | { |
| 997 | int error; |
| 998 | struct fiemap_extent_info *fieinfo = *arg; |
| 999 | u32 fiemap_flags = 0; |
| 1000 | u64 logical, physical, length; |
| 1001 | |
| 1002 | /* Do nothing for a hole */ |
| 1003 | if (bmv->bmv_block == -1LL) |
| 1004 | return 0; |
| 1005 | |
| 1006 | logical = BBTOB(bmv->bmv_offset); |
| 1007 | physical = BBTOB(bmv->bmv_block); |
| 1008 | length = BBTOB(bmv->bmv_length); |
| 1009 | |
| 1010 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) |
| 1011 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; |
| 1012 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { |
Jie Liu | 635c4d0 | 2013-06-06 06:24:01 -0700 | [diff] [blame] | 1013 | fiemap_flags |= (FIEMAP_EXTENT_DELALLOC | |
| 1014 | FIEMAP_EXTENT_UNKNOWN); |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1015 | physical = 0; /* no block yet */ |
| 1016 | } |
| 1017 | if (bmv->bmv_oflags & BMV_OF_LAST) |
| 1018 | fiemap_flags |= FIEMAP_EXTENT_LAST; |
| 1019 | |
| 1020 | error = fiemap_fill_next_extent(fieinfo, logical, physical, |
| 1021 | length, fiemap_flags); |
| 1022 | if (error > 0) { |
| 1023 | error = 0; |
| 1024 | *full = 1; /* user array now full */ |
| 1025 | } |
| 1026 | |
| 1027 | return -error; |
| 1028 | } |
| 1029 | |
| 1030 | STATIC int |
| 1031 | xfs_vn_fiemap( |
| 1032 | struct inode *inode, |
| 1033 | struct fiemap_extent_info *fieinfo, |
| 1034 | u64 start, |
| 1035 | u64 length) |
| 1036 | { |
| 1037 | xfs_inode_t *ip = XFS_I(inode); |
| 1038 | struct getbmapx bm; |
| 1039 | int error; |
| 1040 | |
| 1041 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); |
| 1042 | if (error) |
| 1043 | return error; |
| 1044 | |
| 1045 | /* Set up bmap header for xfs internal routine */ |
| 1046 | bm.bmv_offset = BTOBB(start); |
| 1047 | /* Special case for whole file */ |
| 1048 | if (length == FIEMAP_MAX_OFFSET) |
| 1049 | bm.bmv_length = -1LL; |
| 1050 | else |
| 1051 | bm.bmv_length = BTOBB(length); |
| 1052 | |
Eric Sandeen | 97db39a | 2009-07-26 21:52:01 -0500 | [diff] [blame] | 1053 | /* We add one because in getbmap world count includes the header */ |
Tao Ma | 2d1ff3c | 2010-04-29 15:13:56 +1000 | [diff] [blame] | 1054 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
| 1055 | fieinfo->fi_extents_max + 1; |
| 1056 | bm.bmv_count = min_t(__s32, bm.bmv_count, |
| 1057 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); |
Tao Ma | 9af2546 | 2010-08-30 02:44:03 +0000 | [diff] [blame] | 1058 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1059 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
| 1060 | bm.bmv_iflags |= BMV_IF_ATTRFORK; |
| 1061 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) |
| 1062 | bm.bmv_iflags |= BMV_IF_DELALLOC; |
| 1063 | |
| 1064 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); |
| 1065 | if (error) |
| 1066 | return -error; |
| 1067 | |
| 1068 | return 0; |
| 1069 | } |
| 1070 | |
Zhi Yong Wu | 99b6436 | 2013-12-18 08:22:40 +0800 | [diff] [blame] | 1071 | STATIC int |
| 1072 | xfs_vn_tmpfile( |
| 1073 | struct inode *dir, |
| 1074 | struct dentry *dentry, |
| 1075 | umode_t mode) |
| 1076 | { |
Brian Foster | d540e43 | 2014-05-06 07:34:28 +1000 | [diff] [blame^] | 1077 | return xfs_generic_create(dir, dentry, mode, 0, true); |
Zhi Yong Wu | 99b6436 | 2013-12-18 08:22:40 +0800 | [diff] [blame] | 1078 | } |
| 1079 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1080 | static const struct inode_operations xfs_inode_operations = { |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 1081 | .get_acl = xfs_get_acl, |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 1082 | .set_acl = xfs_set_acl, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1083 | .getattr = xfs_vn_getattr, |
| 1084 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 1085 | .setxattr = generic_setxattr, |
| 1086 | .getxattr = generic_getxattr, |
| 1087 | .removexattr = generic_removexattr, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1088 | .listxattr = xfs_vn_listxattr, |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1089 | .fiemap = xfs_vn_fiemap, |
Christoph Hellwig | 69ff282 | 2012-06-06 17:01:28 -0400 | [diff] [blame] | 1090 | .update_time = xfs_vn_update_time, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | }; |
| 1092 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1093 | static const struct inode_operations xfs_dir_inode_operations = { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1094 | .create = xfs_vn_create, |
| 1095 | .lookup = xfs_vn_lookup, |
| 1096 | .link = xfs_vn_link, |
| 1097 | .unlink = xfs_vn_unlink, |
| 1098 | .symlink = xfs_vn_symlink, |
| 1099 | .mkdir = xfs_vn_mkdir, |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 1100 | /* |
| 1101 | * Yes, XFS uses the same method for rmdir and unlink. |
| 1102 | * |
| 1103 | * There are some subtile differences deeper in the code, |
| 1104 | * but we use S_ISDIR to check for those. |
| 1105 | */ |
| 1106 | .rmdir = xfs_vn_unlink, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1107 | .mknod = xfs_vn_mknod, |
| 1108 | .rename = xfs_vn_rename, |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 1109 | .get_acl = xfs_get_acl, |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 1110 | .set_acl = xfs_set_acl, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1111 | .getattr = xfs_vn_getattr, |
| 1112 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 1113 | .setxattr = generic_setxattr, |
| 1114 | .getxattr = generic_getxattr, |
| 1115 | .removexattr = generic_removexattr, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1116 | .listxattr = xfs_vn_listxattr, |
Christoph Hellwig | 69ff282 | 2012-06-06 17:01:28 -0400 | [diff] [blame] | 1117 | .update_time = xfs_vn_update_time, |
Zhi Yong Wu | 99b6436 | 2013-12-18 08:22:40 +0800 | [diff] [blame] | 1118 | .tmpfile = xfs_vn_tmpfile, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | }; |
| 1120 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1121 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1122 | .create = xfs_vn_create, |
| 1123 | .lookup = xfs_vn_ci_lookup, |
| 1124 | .link = xfs_vn_link, |
| 1125 | .unlink = xfs_vn_unlink, |
| 1126 | .symlink = xfs_vn_symlink, |
| 1127 | .mkdir = xfs_vn_mkdir, |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 1128 | /* |
| 1129 | * Yes, XFS uses the same method for rmdir and unlink. |
| 1130 | * |
| 1131 | * There are some subtile differences deeper in the code, |
| 1132 | * but we use S_ISDIR to check for those. |
| 1133 | */ |
| 1134 | .rmdir = xfs_vn_unlink, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1135 | .mknod = xfs_vn_mknod, |
| 1136 | .rename = xfs_vn_rename, |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 1137 | .get_acl = xfs_get_acl, |
Christoph Hellwig | 2401dc2 | 2013-12-20 05:16:50 -0800 | [diff] [blame] | 1138 | .set_acl = xfs_set_acl, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1139 | .getattr = xfs_vn_getattr, |
| 1140 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 1141 | .setxattr = generic_setxattr, |
| 1142 | .getxattr = generic_getxattr, |
| 1143 | .removexattr = generic_removexattr, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1144 | .listxattr = xfs_vn_listxattr, |
Christoph Hellwig | 69ff282 | 2012-06-06 17:01:28 -0400 | [diff] [blame] | 1145 | .update_time = xfs_vn_update_time, |
Zhi Yong Wu | 99b6436 | 2013-12-18 08:22:40 +0800 | [diff] [blame] | 1146 | .tmpfile = xfs_vn_tmpfile, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1147 | }; |
| 1148 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1149 | static const struct inode_operations xfs_symlink_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | .readlink = generic_readlink, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1151 | .follow_link = xfs_vn_follow_link, |
Al Viro | 96c8c44 | 2013-11-29 22:54:55 -0500 | [diff] [blame] | 1152 | .put_link = kfree_put_link, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1153 | .getattr = xfs_vn_getattr, |
| 1154 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 1155 | .setxattr = generic_setxattr, |
| 1156 | .getxattr = generic_getxattr, |
| 1157 | .removexattr = generic_removexattr, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 1158 | .listxattr = xfs_vn_listxattr, |
Christoph Hellwig | 69ff282 | 2012-06-06 17:01:28 -0400 | [diff] [blame] | 1159 | .update_time = xfs_vn_update_time, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | }; |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1161 | |
| 1162 | STATIC void |
| 1163 | xfs_diflags_to_iflags( |
| 1164 | struct inode *inode, |
| 1165 | struct xfs_inode *ip) |
| 1166 | { |
| 1167 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) |
| 1168 | inode->i_flags |= S_IMMUTABLE; |
| 1169 | else |
| 1170 | inode->i_flags &= ~S_IMMUTABLE; |
| 1171 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) |
| 1172 | inode->i_flags |= S_APPEND; |
| 1173 | else |
| 1174 | inode->i_flags &= ~S_APPEND; |
| 1175 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) |
| 1176 | inode->i_flags |= S_SYNC; |
| 1177 | else |
| 1178 | inode->i_flags &= ~S_SYNC; |
| 1179 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) |
| 1180 | inode->i_flags |= S_NOATIME; |
| 1181 | else |
| 1182 | inode->i_flags &= ~S_NOATIME; |
| 1183 | } |
| 1184 | |
| 1185 | /* |
| 1186 | * Initialize the Linux inode, set up the operation vectors and |
| 1187 | * unlock the inode. |
| 1188 | * |
| 1189 | * When reading existing inodes from disk this is called directly |
| 1190 | * from xfs_iget, when creating a new inode it is called from |
| 1191 | * xfs_ialloc after setting up the inode. |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 1192 | * |
| 1193 | * We are always called with an uninitialised linux inode here. |
| 1194 | * We need to initialise the necessary fields and take a reference |
| 1195 | * on it. |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1196 | */ |
| 1197 | void |
| 1198 | xfs_setup_inode( |
| 1199 | struct xfs_inode *ip) |
| 1200 | { |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 1201 | struct inode *inode = &ip->i_vnode; |
Dave Chinner | ad22c7a | 2013-10-29 22:11:57 +1100 | [diff] [blame] | 1202 | gfp_t gfp_mask; |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 1203 | |
| 1204 | inode->i_ino = ip->i_ino; |
Christoph Hellwig | eaff807 | 2009-12-17 14:25:01 +0100 | [diff] [blame] | 1205 | inode->i_state = I_NEW; |
Christoph Hellwig | 646ec46 | 2010-10-23 07:15:32 -0400 | [diff] [blame] | 1206 | |
| 1207 | inode_sb_list_add(inode); |
Christoph Hellwig | c6f6cd0 | 2010-11-06 11:43:08 +0000 | [diff] [blame] | 1208 | /* make the inode look hashed for the writeback code */ |
| 1209 | hlist_add_fake(&inode->i_hash); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1210 | |
| 1211 | inode->i_mode = ip->i_d.di_mode; |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 1212 | set_nlink(inode, ip->i_d.di_nlink); |
Dwight Engen | 7aab1b2 | 2013-08-15 14:08:01 -0400 | [diff] [blame] | 1213 | inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid); |
| 1214 | inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1215 | |
| 1216 | switch (inode->i_mode & S_IFMT) { |
| 1217 | case S_IFBLK: |
| 1218 | case S_IFCHR: |
| 1219 | inode->i_rdev = |
| 1220 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| 1221 | sysv_minor(ip->i_df.if_u2.if_rdev)); |
| 1222 | break; |
| 1223 | default: |
| 1224 | inode->i_rdev = 0; |
| 1225 | break; |
| 1226 | } |
| 1227 | |
| 1228 | inode->i_generation = ip->i_d.di_gen; |
| 1229 | i_size_write(inode, ip->i_d.di_size); |
| 1230 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; |
| 1231 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; |
| 1232 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; |
| 1233 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; |
| 1234 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; |
| 1235 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; |
| 1236 | xfs_diflags_to_iflags(inode, ip); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1237 | |
Dave Chinner | 4bceb18 | 2013-10-29 22:11:51 +1100 | [diff] [blame] | 1238 | ip->d_ops = ip->i_mount->m_nondir_inode_ops; |
Dave Chinner | 93a8614 | 2014-02-27 16:51:39 +1100 | [diff] [blame] | 1239 | lockdep_set_class(&ip->i_lock.mr_lock, &xfs_nondir_ilock_class); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1240 | switch (inode->i_mode & S_IFMT) { |
| 1241 | case S_IFREG: |
| 1242 | inode->i_op = &xfs_inode_operations; |
| 1243 | inode->i_fop = &xfs_file_operations; |
| 1244 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
| 1245 | break; |
| 1246 | case S_IFDIR: |
Dave Chinner | 93a8614 | 2014-02-27 16:51:39 +1100 | [diff] [blame] | 1247 | lockdep_set_class(&ip->i_lock.mr_lock, &xfs_dir_ilock_class); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1248 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) |
| 1249 | inode->i_op = &xfs_dir_ci_inode_operations; |
| 1250 | else |
| 1251 | inode->i_op = &xfs_dir_inode_operations; |
| 1252 | inode->i_fop = &xfs_dir_file_operations; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 1253 | ip->d_ops = ip->i_mount->m_dir_inode_ops; |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1254 | break; |
| 1255 | case S_IFLNK: |
| 1256 | inode->i_op = &xfs_symlink_inode_operations; |
| 1257 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) |
| 1258 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
| 1259 | break; |
| 1260 | default: |
| 1261 | inode->i_op = &xfs_inode_operations; |
| 1262 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| 1263 | break; |
| 1264 | } |
| 1265 | |
Christoph Hellwig | 510792e | 2011-07-26 15:07:29 +0000 | [diff] [blame] | 1266 | /* |
Dave Chinner | ad22c7a | 2013-10-29 22:11:57 +1100 | [diff] [blame] | 1267 | * Ensure all page cache allocations are done from GFP_NOFS context to |
| 1268 | * prevent direct reclaim recursion back into the filesystem and blowing |
| 1269 | * stacks or deadlocking. |
| 1270 | */ |
| 1271 | gfp_mask = mapping_gfp_mask(inode->i_mapping); |
| 1272 | mapping_set_gfp_mask(inode->i_mapping, (gfp_mask & ~(__GFP_FS))); |
| 1273 | |
| 1274 | /* |
Christoph Hellwig | 510792e | 2011-07-26 15:07:29 +0000 | [diff] [blame] | 1275 | * If there is no attribute fork no ACL can exist on this inode, |
| 1276 | * and it can't have any file capabilities attached to it either. |
| 1277 | */ |
| 1278 | if (!XFS_IFORK_Q(ip)) { |
| 1279 | inode_has_no_xattr(inode); |
Christoph Hellwig | 6311b10 | 2011-07-23 17:36:50 +0200 | [diff] [blame] | 1280 | cache_no_acl(inode); |
Christoph Hellwig | 510792e | 2011-07-26 15:07:29 +0000 | [diff] [blame] | 1281 | } |
Christoph Hellwig | 6311b10 | 2011-07-23 17:36:50 +0200 | [diff] [blame] | 1282 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 1283 | xfs_iflags_clear(ip, XFS_INEW); |
| 1284 | barrier(); |
| 1285 | |
| 1286 | unlock_new_inode(inode); |
| 1287 | } |