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" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include "xfs_fs.h" |
Dave Chinner | 6ca1c90 | 2013-08-12 20:49:26 +1000 | [diff] [blame] | 20 | #include "xfs_format.h" |
Dave Chinner | 70a9883c | 2013-10-23 10:36:05 +1100 | [diff] [blame^] | 21 | #include "xfs_shared.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include "xfs_log.h" |
| 23 | #include "xfs_trans.h" |
| 24 | #include "xfs_sb.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_alloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include "xfs_bmap_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include "xfs_dinode.h" |
| 30 | #include "xfs_inode.h" |
Hannes Eder | 7bf446f | 2009-03-05 15:20:25 +0100 | [diff] [blame] | 31 | #include "xfs_ioctl.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_rtalloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_itable.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 34 | #include "xfs_error.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_attr.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 36 | #include "xfs_bmap.h" |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 37 | #include "xfs_bmap_util.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_buf_item.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include "xfs_fsops.h" |
Christoph Hellwig | a46db60 | 2011-01-07 13:02:04 +0000 | [diff] [blame] | 40 | #include "xfs_discard.h" |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 41 | #include "xfs_quota.h" |
| 42 | #include "xfs_inode_item.h" |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 43 | #include "xfs_export.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 44 | #include "xfs_trace.h" |
Brian Foster | 8ca149d | 2012-11-07 12:21:12 -0500 | [diff] [blame] | 45 | #include "xfs_icache.h" |
Dave Chinner | c24b5df | 2013-08-12 20:49:45 +1000 | [diff] [blame] | 46 | #include "xfs_symlink.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Randy Dunlap | 16f7e0f | 2006-01-11 12:17:46 -0800 | [diff] [blame] | 48 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/dcache.h> |
| 50 | #include <linux/mount.h> |
| 51 | #include <linux/namei.h> |
| 52 | #include <linux/pagemap.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 53 | #include <linux/slab.h> |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 54 | #include <linux/exportfs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | /* |
| 57 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to |
| 58 | * a file or fs handle. |
| 59 | * |
| 60 | * XFS_IOC_PATH_TO_FSHANDLE |
| 61 | * returns fs handle for a mount point or path within that mount point |
| 62 | * XFS_IOC_FD_TO_HANDLE |
| 63 | * returns full handle for a FD opened in user space |
| 64 | * XFS_IOC_PATH_TO_HANDLE |
| 65 | * returns full handle for a path |
| 66 | */ |
sandeen@sandeen.net | d5547f9 | 2008-11-25 21:20:08 -0600 | [diff] [blame] | 67 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | xfs_find_handle( |
| 69 | unsigned int cmd, |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 70 | xfs_fsop_handlereq_t *hreq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | { |
| 72 | int hsize; |
| 73 | xfs_handle_t handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | struct inode *inode; |
Dave Chinner | a30b036 | 2013-09-02 20:49:36 +1000 | [diff] [blame] | 75 | struct fd f = {NULL}; |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 76 | struct path path; |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 77 | int error; |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 78 | struct xfs_inode *ip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 80 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 81 | f = fdget(hreq->fd); |
| 82 | if (!f.file) |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 83 | return -EBADF; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 84 | inode = file_inode(f.file); |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 85 | } else { |
| 86 | error = user_lpath((const char __user *)hreq->path, &path); |
| 87 | if (error) |
| 88 | return error; |
| 89 | inode = path.dentry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | } |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 91 | ip = XFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 93 | /* |
| 94 | * We can only generate handles for inodes residing on a XFS filesystem, |
| 95 | * and only for regular files, directories or symbolic links. |
| 96 | */ |
| 97 | error = -EINVAL; |
| 98 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) |
| 99 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 101 | error = -EBADF; |
| 102 | if (!S_ISREG(inode->i_mode) && |
| 103 | !S_ISDIR(inode->i_mode) && |
| 104 | !S_ISLNK(inode->i_mode)) |
| 105 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 108 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 110 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { |
| 111 | /* |
| 112 | * This handle only contains an fsid, zero the rest. |
| 113 | */ |
| 114 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); |
| 115 | hsize = sizeof(xfs_fsid_t); |
| 116 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | int lock_mode; |
| 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | lock_mode = xfs_ilock_map_shared(ip); |
Christoph Hellwig | c614391 | 2007-09-14 15:22:37 +1000 | [diff] [blame] | 120 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
| 121 | sizeof(handle.ha_fid.fid_len); |
| 122 | handle.ha_fid.fid_pad = 0; |
| 123 | handle.ha_fid.fid_gen = ip->i_d.di_gen; |
| 124 | handle.ha_fid.fid_ino = ip->i_ino; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | xfs_iunlock_map_shared(ip, lock_mode); |
| 126 | |
| 127 | hsize = XFS_HSIZE(handle); |
| 128 | } |
| 129 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 130 | error = -EFAULT; |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 131 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 132 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
| 133 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 135 | error = 0; |
| 136 | |
| 137 | out_put: |
| 138 | if (cmd == XFS_IOC_FD_TO_HANDLE) |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 139 | fdput(f); |
Christoph Hellwig | 4346cdd | 2009-02-08 21:51:14 +0100 | [diff] [blame] | 140 | else |
| 141 | path_put(&path); |
| 142 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | } |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 146 | * No need to do permission checks on the various pathname components |
| 147 | * as the handle operations are privileged. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | */ |
| 149 | STATIC int |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 150 | xfs_handle_acceptable( |
| 151 | void *context, |
| 152 | struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 154 | return 1; |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * Convert userspace handle data into a dentry. |
| 159 | */ |
| 160 | struct dentry * |
| 161 | xfs_handle_to_dentry( |
| 162 | struct file *parfilp, |
| 163 | void __user *uhandle, |
| 164 | u32 hlen) |
| 165 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | xfs_handle_t handle; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 167 | struct xfs_fid64 fid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
| 169 | /* |
| 170 | * Only allow handle opens under a directory. |
| 171 | */ |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 172 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 173 | return ERR_PTR(-ENOTDIR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 175 | if (hlen != sizeof(xfs_handle_t)) |
| 176 | return ERR_PTR(-EINVAL); |
| 177 | if (copy_from_user(&handle, uhandle, hlen)) |
| 178 | return ERR_PTR(-EFAULT); |
| 179 | if (handle.ha_fid.fid_len != |
| 180 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) |
| 181 | return ERR_PTR(-EINVAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 183 | memset(&fid, 0, sizeof(struct fid)); |
| 184 | fid.ino = handle.ha_fid.fid_ino; |
| 185 | fid.gen = handle.ha_fid.fid_gen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 187 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, |
| 188 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, |
| 189 | xfs_handle_acceptable, NULL); |
| 190 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 192 | STATIC struct dentry * |
| 193 | xfs_handlereq_to_dentry( |
| 194 | struct file *parfilp, |
| 195 | xfs_fsop_handlereq_t *hreq) |
| 196 | { |
| 197 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | } |
| 199 | |
sandeen@sandeen.net | d5547f9 | 2008-11-25 21:20:08 -0600 | [diff] [blame] | 200 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | xfs_open_by_handle( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | struct file *parfilp, |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 203 | xfs_fsop_handlereq_t *hreq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
David Howells | 745ca24 | 2008-11-14 10:39:22 +1100 | [diff] [blame] | 205 | const struct cred *cred = current_cred(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | int error; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 207 | int fd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | int permflag; |
| 209 | struct file *filp; |
| 210 | struct inode *inode; |
| 211 | struct dentry *dentry; |
Dave Chinner | 1a1d772 | 2012-03-22 05:15:06 +0000 | [diff] [blame] | 212 | fmode_t fmode; |
Al Viro | 765927b | 2012-06-26 21:58:53 +0400 | [diff] [blame] | 213 | struct path path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
| 215 | if (!capable(CAP_SYS_ADMIN)) |
| 216 | return -XFS_ERROR(EPERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 218 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
| 219 | if (IS_ERR(dentry)) |
| 220 | return PTR_ERR(dentry); |
| 221 | inode = dentry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
| 223 | /* Restrict xfs_open_by_handle to directories & regular files. */ |
| 224 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 225 | error = -XFS_ERROR(EPERM); |
| 226 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | #if BITS_PER_LONG != 32 |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 230 | hreq->oflags |= O_LARGEFILE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | #endif |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 232 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 233 | permflag = hreq->oflags; |
Dave Chinner | 1a1d772 | 2012-03-22 05:15:06 +0000 | [diff] [blame] | 234 | fmode = OPEN_FMODE(permflag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
Dave Chinner | 1a1d772 | 2012-03-22 05:15:06 +0000 | [diff] [blame] | 236 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 237 | error = -XFS_ERROR(EPERM); |
| 238 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Dave Chinner | 1a1d772 | 2012-03-22 05:15:06 +0000 | [diff] [blame] | 241 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 242 | error = -XFS_ERROR(EACCES); |
| 243 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | } |
| 245 | |
| 246 | /* Can't write directories. */ |
Dave Chinner | 1a1d772 | 2012-03-22 05:15:06 +0000 | [diff] [blame] | 247 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 248 | error = -XFS_ERROR(EISDIR); |
| 249 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
Yann Droneaud | 862a629 | 2013-07-02 18:39:34 +0200 | [diff] [blame] | 252 | fd = get_unused_fd_flags(0); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 253 | if (fd < 0) { |
| 254 | error = fd; |
| 255 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Al Viro | 765927b | 2012-06-26 21:58:53 +0400 | [diff] [blame] | 258 | path.mnt = parfilp->f_path.mnt; |
| 259 | path.dentry = dentry; |
| 260 | filp = dentry_open(&path, hreq->oflags, cred); |
| 261 | dput(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | if (IS_ERR(filp)) { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 263 | put_unused_fd(fd); |
| 264 | return PTR_ERR(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 266 | |
Al Viro | 0320937 | 2011-07-25 20:54:24 -0400 | [diff] [blame] | 267 | if (S_ISREG(inode->i_mode)) { |
Vlad Apostolov | 2e2e7bb | 2006-11-11 18:04:47 +1100 | [diff] [blame] | 268 | filp->f_flags |= O_NOATIME; |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 269 | filp->f_mode |= FMODE_NOCMTIME; |
Vlad Apostolov | 2e2e7bb | 2006-11-11 18:04:47 +1100 | [diff] [blame] | 270 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 272 | fd_install(fd, filp); |
| 273 | return fd; |
| 274 | |
| 275 | out_dput: |
| 276 | dput(dentry); |
| 277 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | } |
| 279 | |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 280 | /* |
| 281 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's |
| 282 | * unused first argument. |
| 283 | */ |
| 284 | STATIC int |
| 285 | do_readlink( |
| 286 | char __user *buffer, |
| 287 | int buflen, |
| 288 | const char *link) |
| 289 | { |
| 290 | int len; |
| 291 | |
| 292 | len = PTR_ERR(link); |
| 293 | if (IS_ERR(link)) |
| 294 | goto out; |
| 295 | |
| 296 | len = strlen(link); |
| 297 | if (len > (unsigned) buflen) |
| 298 | len = buflen; |
| 299 | if (copy_to_user(buffer, link, len)) |
| 300 | len = -EFAULT; |
| 301 | out: |
| 302 | return len; |
| 303 | } |
| 304 | |
| 305 | |
sandeen@sandeen.net | d5547f9 | 2008-11-25 21:20:08 -0600 | [diff] [blame] | 306 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | xfs_readlink_by_handle( |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 308 | struct file *parfilp, |
| 309 | xfs_fsop_handlereq_t *hreq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 311 | struct dentry *dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | __u32 olen; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 313 | void *link; |
| 314 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
| 316 | if (!capable(CAP_SYS_ADMIN)) |
| 317 | return -XFS_ERROR(EPERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 319 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
| 320 | if (IS_ERR(dentry)) |
| 321 | return PTR_ERR(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
| 323 | /* Restrict this handle operation to symlinks only. */ |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 324 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 325 | error = -XFS_ERROR(EINVAL); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 326 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 329 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 330 | error = -XFS_ERROR(EFAULT); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 331 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 334 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 335 | if (!link) { |
| 336 | error = -XFS_ERROR(ENOMEM); |
| 337 | goto out_dput; |
| 338 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 340 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 341 | if (error) |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 342 | goto out_kfree; |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 343 | error = do_readlink(hreq->ohandle, olen, link); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 344 | if (error) |
| 345 | goto out_kfree; |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 346 | |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 347 | out_kfree: |
| 348 | kfree(link); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 349 | out_dput: |
| 350 | dput(dentry); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 351 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Dave Chinner | c24b5df | 2013-08-12 20:49:45 +1000 | [diff] [blame] | 354 | int |
| 355 | xfs_set_dmattrs( |
| 356 | xfs_inode_t *ip, |
| 357 | u_int evmask, |
| 358 | u_int16_t state) |
| 359 | { |
| 360 | xfs_mount_t *mp = ip->i_mount; |
| 361 | xfs_trans_t *tp; |
| 362 | int error; |
| 363 | |
| 364 | if (!capable(CAP_SYS_ADMIN)) |
| 365 | return XFS_ERROR(EPERM); |
| 366 | |
| 367 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 368 | return XFS_ERROR(EIO); |
| 369 | |
| 370 | tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); |
Jie Liu | 3d3c8b5 | 2013-08-12 20:49:59 +1000 | [diff] [blame] | 371 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
Dave Chinner | c24b5df | 2013-08-12 20:49:45 +1000 | [diff] [blame] | 372 | if (error) { |
| 373 | xfs_trans_cancel(tp, 0); |
| 374 | return error; |
| 375 | } |
| 376 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 377 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
| 378 | |
| 379 | ip->i_d.di_dmevmask = evmask; |
| 380 | ip->i_d.di_dmstate = state; |
| 381 | |
| 382 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 383 | error = xfs_trans_commit(tp, 0); |
| 384 | |
| 385 | return error; |
| 386 | } |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | STATIC int |
| 389 | xfs_fssetdm_by_handle( |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 390 | struct file *parfilp, |
| 391 | void __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | { |
| 393 | int error; |
| 394 | struct fsdmidata fsd; |
| 395 | xfs_fsop_setdm_handlereq_t dmhreq; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 396 | struct dentry *dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
| 398 | if (!capable(CAP_MKNOD)) |
| 399 | return -XFS_ERROR(EPERM); |
| 400 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
| 401 | return -XFS_ERROR(EFAULT); |
| 402 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 403 | error = mnt_want_write_file(parfilp); |
| 404 | if (error) |
| 405 | return error; |
| 406 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 407 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 408 | if (IS_ERR(dentry)) { |
| 409 | mnt_drop_write_file(parfilp); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 410 | return PTR_ERR(dentry); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 411 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 413 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
Christoph Hellwig | 6e7f75e | 2007-10-11 18:09:50 +1000 | [diff] [blame] | 414 | error = -XFS_ERROR(EPERM); |
| 415 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | } |
| 417 | |
| 418 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { |
Christoph Hellwig | 6e7f75e | 2007-10-11 18:09:50 +1000 | [diff] [blame] | 419 | error = -XFS_ERROR(EFAULT); |
| 420 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 423 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
Christoph Hellwig | 6e7f75e | 2007-10-11 18:09:50 +1000 | [diff] [blame] | 424 | fsd.fsd_dmstate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Christoph Hellwig | 6e7f75e | 2007-10-11 18:09:50 +1000 | [diff] [blame] | 426 | out: |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 427 | mnt_drop_write_file(parfilp); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 428 | dput(dentry); |
Christoph Hellwig | 6e7f75e | 2007-10-11 18:09:50 +1000 | [diff] [blame] | 429 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | STATIC int |
| 433 | xfs_attrlist_by_handle( |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 434 | struct file *parfilp, |
| 435 | void __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | { |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 437 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | attrlist_cursor_kern_t *cursor; |
| 439 | xfs_fsop_attrlist_handlereq_t al_hreq; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 440 | struct dentry *dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | char *kbuf; |
| 442 | |
| 443 | if (!capable(CAP_SYS_ADMIN)) |
| 444 | return -XFS_ERROR(EPERM); |
| 445 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
| 446 | return -XFS_ERROR(EFAULT); |
| 447 | if (al_hreq.buflen > XATTR_LIST_MAX) |
| 448 | return -XFS_ERROR(EINVAL); |
| 449 | |
Christoph Hellwig | 90ad58a | 2008-06-27 13:32:19 +1000 | [diff] [blame] | 450 | /* |
| 451 | * Reject flags, only allow namespaces. |
| 452 | */ |
| 453 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) |
| 454 | return -XFS_ERROR(EINVAL); |
| 455 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 456 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
| 457 | if (IS_ERR(dentry)) |
| 458 | return PTR_ERR(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
Dave Chinner | fdd3cce | 2013-09-02 20:53:00 +1000 | [diff] [blame] | 460 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
| 461 | if (!kbuf) |
| 462 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
| 464 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 465 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 466 | al_hreq.flags, cursor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | if (error) |
| 468 | goto out_kfree; |
| 469 | |
| 470 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) |
| 471 | error = -EFAULT; |
| 472 | |
Dave Chinner | fdd3cce | 2013-09-02 20:53:00 +1000 | [diff] [blame] | 473 | out_kfree: |
| 474 | kmem_free(kbuf); |
| 475 | out_dput: |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 476 | dput(dentry); |
| 477 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
| 479 | |
sandeen@sandeen.net | 2875097 | 2008-11-25 21:20:15 -0600 | [diff] [blame] | 480 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | xfs_attrmulti_attr_get( |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 482 | struct inode *inode, |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 483 | unsigned char *name, |
| 484 | unsigned char __user *ubuf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | __uint32_t *len, |
| 486 | __uint32_t flags) |
| 487 | { |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 488 | unsigned char *kbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | int error = EFAULT; |
Barry Naujok | e8b0eba | 2008-04-22 17:34:31 +1000 | [diff] [blame] | 490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | if (*len > XATTR_SIZE_MAX) |
| 492 | return EINVAL; |
Dave Chinner | fdd3cce | 2013-09-02 20:53:00 +1000 | [diff] [blame] | 493 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
| 494 | if (!kbuf) |
| 495 | return ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
Barry Naujok | e8b0eba | 2008-04-22 17:34:31 +1000 | [diff] [blame] | 497 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | if (error) |
| 499 | goto out_kfree; |
| 500 | |
| 501 | if (copy_to_user(ubuf, kbuf, *len)) |
| 502 | error = EFAULT; |
| 503 | |
Dave Chinner | fdd3cce | 2013-09-02 20:53:00 +1000 | [diff] [blame] | 504 | out_kfree: |
| 505 | kmem_free(kbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | return error; |
| 507 | } |
| 508 | |
sandeen@sandeen.net | 2875097 | 2008-11-25 21:20:15 -0600 | [diff] [blame] | 509 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | xfs_attrmulti_attr_set( |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 511 | struct inode *inode, |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 512 | unsigned char *name, |
| 513 | const unsigned char __user *ubuf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | __uint32_t len, |
| 515 | __uint32_t flags) |
| 516 | { |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 517 | unsigned char *kbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | int error = EFAULT; |
| 519 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 520 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | return EPERM; |
| 522 | if (len > XATTR_SIZE_MAX) |
| 523 | return EINVAL; |
| 524 | |
Li Zefan | 0e639bd | 2009-04-08 15:08:04 +0800 | [diff] [blame] | 525 | kbuf = memdup_user(ubuf, len); |
| 526 | if (IS_ERR(kbuf)) |
| 527 | return PTR_ERR(kbuf); |
Barry Naujok | e8b0eba | 2008-04-22 17:34:31 +1000 | [diff] [blame] | 528 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 529 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | return error; |
| 532 | } |
| 533 | |
sandeen@sandeen.net | 2875097 | 2008-11-25 21:20:15 -0600 | [diff] [blame] | 534 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | xfs_attrmulti_attr_remove( |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 536 | struct inode *inode, |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 537 | unsigned char *name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | __uint32_t flags) |
| 539 | { |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 540 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | return EPERM; |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 542 | return xfs_attr_remove(XFS_I(inode), name, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | STATIC int |
| 546 | xfs_attrmulti_by_handle( |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 547 | struct file *parfilp, |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 548 | void __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | { |
| 550 | int error; |
| 551 | xfs_attr_multiop_t *ops; |
| 552 | xfs_fsop_attrmulti_handlereq_t am_hreq; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 553 | struct dentry *dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | unsigned int i, size; |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 555 | unsigned char *attr_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
| 557 | if (!capable(CAP_SYS_ADMIN)) |
| 558 | return -XFS_ERROR(EPERM); |
| 559 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
| 560 | return -XFS_ERROR(EFAULT); |
| 561 | |
Zhitong Wang | fda168c | 2010-03-23 09:51:22 +1100 | [diff] [blame] | 562 | /* overflow check */ |
| 563 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) |
| 564 | return -E2BIG; |
| 565 | |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 566 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
| 567 | if (IS_ERR(dentry)) |
| 568 | return PTR_ERR(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
| 570 | error = E2BIG; |
Christoph Hellwig | e182f57 | 2008-06-27 13:32:31 +1000 | [diff] [blame] | 571 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | if (!size || size > 16 * PAGE_SIZE) |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 573 | goto out_dput; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
Li Zefan | 0e639bd | 2009-04-08 15:08:04 +0800 | [diff] [blame] | 575 | ops = memdup_user(am_hreq.ops, size); |
| 576 | if (IS_ERR(ops)) { |
| 577 | error = PTR_ERR(ops); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 578 | goto out_dput; |
Li Zefan | 0e639bd | 2009-04-08 15:08:04 +0800 | [diff] [blame] | 579 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | |
| 581 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
| 582 | if (!attr_name) |
| 583 | goto out_kfree_ops; |
| 584 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | error = 0; |
| 586 | for (i = 0; i < am_hreq.opcount; i++) { |
Dave Chinner | a9273ca | 2010-01-20 10:47:48 +1100 | [diff] [blame] | 587 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | ops[i].am_attrname, MAXNAMELEN); |
| 589 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) |
| 590 | error = -ERANGE; |
| 591 | if (ops[i].am_error < 0) |
| 592 | break; |
| 593 | |
| 594 | switch (ops[i].am_opcode) { |
| 595 | case ATTR_OP_GET: |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 596 | ops[i].am_error = xfs_attrmulti_attr_get( |
| 597 | dentry->d_inode, attr_name, |
| 598 | ops[i].am_attrvalue, &ops[i].am_length, |
| 599 | ops[i].am_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | break; |
| 601 | case ATTR_OP_SET: |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 602 | ops[i].am_error = mnt_want_write_file(parfilp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 603 | if (ops[i].am_error) |
| 604 | break; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 605 | ops[i].am_error = xfs_attrmulti_attr_set( |
| 606 | dentry->d_inode, attr_name, |
| 607 | ops[i].am_attrvalue, ops[i].am_length, |
| 608 | ops[i].am_flags); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 609 | mnt_drop_write_file(parfilp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | break; |
| 611 | case ATTR_OP_REMOVE: |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 612 | ops[i].am_error = mnt_want_write_file(parfilp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 613 | if (ops[i].am_error) |
| 614 | break; |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 615 | ops[i].am_error = xfs_attrmulti_attr_remove( |
| 616 | dentry->d_inode, attr_name, |
| 617 | ops[i].am_flags); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 618 | mnt_drop_write_file(parfilp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | break; |
| 620 | default: |
| 621 | ops[i].am_error = EINVAL; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | if (copy_to_user(am_hreq.ops, ops, size)) |
| 626 | error = XFS_ERROR(EFAULT); |
| 627 | |
| 628 | kfree(attr_name); |
| 629 | out_kfree_ops: |
| 630 | kfree(ops); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 631 | out_dput: |
| 632 | dput(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | return -error; |
| 634 | } |
| 635 | |
sandeen@sandeen.net | d5547f9 | 2008-11-25 21:20:08 -0600 | [diff] [blame] | 636 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | xfs_ioc_space( |
Christoph Hellwig | 993386c | 2007-08-28 16:12:30 +1000 | [diff] [blame] | 638 | struct xfs_inode *ip, |
Alexey Dobriyan | f37ea14 | 2006-09-28 10:52:04 +1000 | [diff] [blame] | 639 | struct inode *inode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | struct file *filp, |
| 641 | int ioflags, |
| 642 | unsigned int cmd, |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 643 | xfs_flock64_t *bf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | { |
Christoph Hellwig | 865e944 | 2013-10-12 00:55:08 -0700 | [diff] [blame] | 645 | struct xfs_mount *mp = ip->i_mount; |
| 646 | struct xfs_trans *tp; |
| 647 | struct iattr iattr; |
| 648 | bool setprealloc = false; |
| 649 | bool clrprealloc = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | int error; |
| 651 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 652 | /* |
| 653 | * Only allow the sys admin to reserve space unless |
| 654 | * unwritten extents are enabled. |
| 655 | */ |
| 656 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && |
| 657 | !capable(CAP_SYS_ADMIN)) |
| 658 | return -XFS_ERROR(EPERM); |
| 659 | |
Alexey Dobriyan | f37ea14 | 2006-09-28 10:52:04 +1000 | [diff] [blame] | 660 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | return -XFS_ERROR(EPERM); |
| 662 | |
Eric Sandeen | ad4a8ac | 2005-09-02 16:41:16 +1000 | [diff] [blame] | 663 | if (!(filp->f_mode & FMODE_WRITE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | return -XFS_ERROR(EBADF); |
| 665 | |
Alexey Dobriyan | f37ea14 | 2006-09-28 10:52:04 +1000 | [diff] [blame] | 666 | if (!S_ISREG(inode->i_mode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | return -XFS_ERROR(EINVAL); |
| 668 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 669 | error = mnt_want_write_file(filp); |
| 670 | if (error) |
| 671 | return error; |
Christoph Hellwig | 865e944 | 2013-10-12 00:55:08 -0700 | [diff] [blame] | 672 | |
Christoph Hellwig | 5f8aca8 | 2013-10-12 00:55:06 -0700 | [diff] [blame] | 673 | xfs_ilock(ip, XFS_IOLOCK_EXCL); |
Christoph Hellwig | 865e944 | 2013-10-12 00:55:08 -0700 | [diff] [blame] | 674 | |
| 675 | switch (bf->l_whence) { |
| 676 | case 0: /*SEEK_SET*/ |
| 677 | break; |
| 678 | case 1: /*SEEK_CUR*/ |
| 679 | bf->l_start += filp->f_pos; |
| 680 | break; |
| 681 | case 2: /*SEEK_END*/ |
| 682 | bf->l_start += XFS_ISIZE(ip); |
| 683 | break; |
| 684 | default: |
| 685 | error = XFS_ERROR(EINVAL); |
| 686 | goto out_unlock; |
| 687 | } |
| 688 | |
| 689 | /* |
| 690 | * length of <= 0 for resv/unresv/zero is invalid. length for |
| 691 | * alloc/free is ignored completely and we have no idea what userspace |
| 692 | * might have set it to, so set it to zero to allow range |
| 693 | * checks to pass. |
| 694 | */ |
| 695 | switch (cmd) { |
| 696 | case XFS_IOC_ZERO_RANGE: |
| 697 | case XFS_IOC_RESVSP: |
| 698 | case XFS_IOC_RESVSP64: |
| 699 | case XFS_IOC_UNRESVSP: |
| 700 | case XFS_IOC_UNRESVSP64: |
| 701 | if (bf->l_len <= 0) { |
| 702 | error = XFS_ERROR(EINVAL); |
| 703 | goto out_unlock; |
| 704 | } |
| 705 | break; |
| 706 | default: |
| 707 | bf->l_len = 0; |
| 708 | break; |
| 709 | } |
| 710 | |
| 711 | if (bf->l_start < 0 || |
| 712 | bf->l_start > mp->m_super->s_maxbytes || |
| 713 | bf->l_start + bf->l_len < 0 || |
| 714 | bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) { |
| 715 | error = XFS_ERROR(EINVAL); |
| 716 | goto out_unlock; |
| 717 | } |
| 718 | |
| 719 | switch (cmd) { |
| 720 | case XFS_IOC_ZERO_RANGE: |
| 721 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
| 722 | if (!error) |
| 723 | setprealloc = true; |
| 724 | break; |
| 725 | case XFS_IOC_RESVSP: |
| 726 | case XFS_IOC_RESVSP64: |
| 727 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
| 728 | XFS_BMAPI_PREALLOC); |
| 729 | if (!error) |
| 730 | setprealloc = true; |
| 731 | break; |
| 732 | case XFS_IOC_UNRESVSP: |
| 733 | case XFS_IOC_UNRESVSP64: |
| 734 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); |
| 735 | break; |
| 736 | case XFS_IOC_ALLOCSP: |
| 737 | case XFS_IOC_ALLOCSP64: |
| 738 | case XFS_IOC_FREESP: |
| 739 | case XFS_IOC_FREESP64: |
| 740 | if (bf->l_start > XFS_ISIZE(ip)) { |
| 741 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), |
| 742 | bf->l_start - XFS_ISIZE(ip), 0); |
| 743 | if (error) |
| 744 | goto out_unlock; |
| 745 | } |
| 746 | |
| 747 | iattr.ia_valid = ATTR_SIZE; |
| 748 | iattr.ia_size = bf->l_start; |
| 749 | |
| 750 | error = xfs_setattr_size(ip, &iattr); |
| 751 | if (!error) |
| 752 | clrprealloc = true; |
| 753 | break; |
| 754 | default: |
| 755 | ASSERT(0); |
| 756 | error = XFS_ERROR(EINVAL); |
| 757 | } |
| 758 | |
| 759 | if (error) |
| 760 | goto out_unlock; |
| 761 | |
| 762 | tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID); |
| 763 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0); |
| 764 | if (error) { |
| 765 | xfs_trans_cancel(tp, 0); |
| 766 | goto out_unlock; |
| 767 | } |
| 768 | |
| 769 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 770 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
| 771 | |
| 772 | if (!(ioflags & IO_INVIS)) { |
| 773 | ip->i_d.di_mode &= ~S_ISUID; |
| 774 | if (ip->i_d.di_mode & S_IXGRP) |
| 775 | ip->i_d.di_mode &= ~S_ISGID; |
| 776 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); |
| 777 | } |
| 778 | |
| 779 | if (setprealloc) |
| 780 | ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; |
| 781 | else if (clrprealloc) |
| 782 | ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC; |
| 783 | |
| 784 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 785 | if (filp->f_flags & O_DSYNC) |
| 786 | xfs_trans_set_sync(tp); |
| 787 | error = xfs_trans_commit(tp, 0); |
| 788 | |
| 789 | out_unlock: |
Christoph Hellwig | 5f8aca8 | 2013-10-12 00:55:06 -0700 | [diff] [blame] | 790 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 791 | mnt_drop_write_file(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | return -error; |
| 793 | } |
| 794 | |
| 795 | STATIC int |
| 796 | xfs_ioc_bulkstat( |
| 797 | xfs_mount_t *mp, |
| 798 | unsigned int cmd, |
| 799 | void __user *arg) |
| 800 | { |
| 801 | xfs_fsop_bulkreq_t bulkreq; |
| 802 | int count; /* # of records returned */ |
| 803 | xfs_ino_t inlast; /* last inode number */ |
| 804 | int done; |
| 805 | int error; |
| 806 | |
| 807 | /* done = 1 if there are more stats to get and if bulkstat */ |
| 808 | /* should be called again (unused here, but used in dmapi) */ |
| 809 | |
| 810 | if (!capable(CAP_SYS_ADMIN)) |
| 811 | return -EPERM; |
| 812 | |
| 813 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 814 | return -XFS_ERROR(EIO); |
| 815 | |
| 816 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) |
| 817 | return -XFS_ERROR(EFAULT); |
| 818 | |
| 819 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) |
| 820 | return -XFS_ERROR(EFAULT); |
| 821 | |
| 822 | if ((count = bulkreq.icount) <= 0) |
| 823 | return -XFS_ERROR(EINVAL); |
| 824 | |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 825 | if (bulkreq.ubuffer == NULL) |
| 826 | return -XFS_ERROR(EINVAL); |
| 827 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | if (cmd == XFS_IOC_FSINUMBERS) |
| 829 | error = xfs_inumbers(mp, &inlast, &count, |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 830 | bulkreq.ubuffer, xfs_inumbers_fmt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
| 832 | error = xfs_bulkstat_single(mp, &inlast, |
| 833 | bulkreq.ubuffer, &done); |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 834 | else /* XFS_IOC_FSBULKSTAT */ |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 835 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
| 836 | sizeof(xfs_bstat_t), bulkreq.ubuffer, |
| 837 | &done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
| 839 | if (error) |
| 840 | return -error; |
| 841 | |
| 842 | if (bulkreq.ocount != NULL) { |
| 843 | if (copy_to_user(bulkreq.lastip, &inlast, |
| 844 | sizeof(xfs_ino_t))) |
| 845 | return -XFS_ERROR(EFAULT); |
| 846 | |
| 847 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) |
| 848 | return -XFS_ERROR(EFAULT); |
| 849 | } |
| 850 | |
| 851 | return 0; |
| 852 | } |
| 853 | |
| 854 | STATIC int |
| 855 | xfs_ioc_fsgeometry_v1( |
| 856 | xfs_mount_t *mp, |
| 857 | void __user *arg) |
| 858 | { |
Alex Elder | eeb2036 | 2011-03-01 17:50:00 +0000 | [diff] [blame] | 859 | xfs_fsop_geom_t fsgeo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | int error; |
| 861 | |
Alex Elder | eeb2036 | 2011-03-01 17:50:00 +0000 | [diff] [blame] | 862 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | if (error) |
| 864 | return -error; |
| 865 | |
Alex Elder | eeb2036 | 2011-03-01 17:50:00 +0000 | [diff] [blame] | 866 | /* |
| 867 | * Caller should have passed an argument of type |
| 868 | * xfs_fsop_geom_v1_t. This is a proper subset of the |
| 869 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. |
| 870 | */ |
| 871 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | return -XFS_ERROR(EFAULT); |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | STATIC int |
| 877 | xfs_ioc_fsgeometry( |
| 878 | xfs_mount_t *mp, |
| 879 | void __user *arg) |
| 880 | { |
| 881 | xfs_fsop_geom_t fsgeo; |
| 882 | int error; |
| 883 | |
| 884 | error = xfs_fs_geometry(mp, &fsgeo, 4); |
| 885 | if (error) |
| 886 | return -error; |
| 887 | |
| 888 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) |
| 889 | return -XFS_ERROR(EFAULT); |
| 890 | return 0; |
| 891 | } |
| 892 | |
| 893 | /* |
| 894 | * Linux extended inode flags interface. |
| 895 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | |
| 897 | STATIC unsigned int |
| 898 | xfs_merge_ioc_xflags( |
| 899 | unsigned int flags, |
| 900 | unsigned int start) |
| 901 | { |
| 902 | unsigned int xflags = start; |
| 903 | |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 904 | if (flags & FS_IMMUTABLE_FL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | xflags |= XFS_XFLAG_IMMUTABLE; |
| 906 | else |
| 907 | xflags &= ~XFS_XFLAG_IMMUTABLE; |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 908 | if (flags & FS_APPEND_FL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | xflags |= XFS_XFLAG_APPEND; |
| 910 | else |
| 911 | xflags &= ~XFS_XFLAG_APPEND; |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 912 | if (flags & FS_SYNC_FL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | xflags |= XFS_XFLAG_SYNC; |
| 914 | else |
| 915 | xflags &= ~XFS_XFLAG_SYNC; |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 916 | if (flags & FS_NOATIME_FL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | xflags |= XFS_XFLAG_NOATIME; |
| 918 | else |
| 919 | xflags &= ~XFS_XFLAG_NOATIME; |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 920 | if (flags & FS_NODUMP_FL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | xflags |= XFS_XFLAG_NODUMP; |
| 922 | else |
| 923 | xflags &= ~XFS_XFLAG_NODUMP; |
| 924 | |
| 925 | return xflags; |
| 926 | } |
| 927 | |
| 928 | STATIC unsigned int |
| 929 | xfs_di2lxflags( |
| 930 | __uint16_t di_flags) |
| 931 | { |
| 932 | unsigned int flags = 0; |
| 933 | |
| 934 | if (di_flags & XFS_DIFLAG_IMMUTABLE) |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 935 | flags |= FS_IMMUTABLE_FL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | if (di_flags & XFS_DIFLAG_APPEND) |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 937 | flags |= FS_APPEND_FL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | if (di_flags & XFS_DIFLAG_SYNC) |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 939 | flags |= FS_SYNC_FL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | if (di_flags & XFS_DIFLAG_NOATIME) |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 941 | flags |= FS_NOATIME_FL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | if (di_flags & XFS_DIFLAG_NODUMP) |
Eric Sandeen | 39058a0 | 2007-02-10 18:37:10 +1100 | [diff] [blame] | 943 | flags |= FS_NODUMP_FL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | return flags; |
| 945 | } |
| 946 | |
| 947 | STATIC int |
Christoph Hellwig | c83bfab | 2007-10-11 17:47:00 +1000 | [diff] [blame] | 948 | xfs_ioc_fsgetxattr( |
| 949 | xfs_inode_t *ip, |
| 950 | int attr, |
| 951 | void __user *arg) |
| 952 | { |
| 953 | struct fsxattr fa; |
| 954 | |
Dan Rosenberg | a122eb2 | 2010-09-06 18:24:57 -0400 | [diff] [blame] | 955 | memset(&fa, 0, sizeof(struct fsxattr)); |
| 956 | |
Christoph Hellwig | c83bfab | 2007-10-11 17:47:00 +1000 | [diff] [blame] | 957 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
| 958 | fa.fsx_xflags = xfs_ip2xflags(ip); |
| 959 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 960 | fa.fsx_projid = xfs_get_projid(ip); |
Christoph Hellwig | c83bfab | 2007-10-11 17:47:00 +1000 | [diff] [blame] | 961 | |
| 962 | if (attr) { |
| 963 | if (ip->i_afp) { |
| 964 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) |
| 965 | fa.fsx_nextents = ip->i_afp->if_bytes / |
| 966 | sizeof(xfs_bmbt_rec_t); |
| 967 | else |
| 968 | fa.fsx_nextents = ip->i_d.di_anextents; |
| 969 | } else |
| 970 | fa.fsx_nextents = 0; |
| 971 | } else { |
| 972 | if (ip->i_df.if_flags & XFS_IFEXTENTS) |
| 973 | fa.fsx_nextents = ip->i_df.if_bytes / |
| 974 | sizeof(xfs_bmbt_rec_t); |
| 975 | else |
| 976 | fa.fsx_nextents = ip->i_d.di_nextents; |
| 977 | } |
| 978 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| 979 | |
| 980 | if (copy_to_user(arg, &fa, sizeof(fa))) |
| 981 | return -EFAULT; |
| 982 | return 0; |
| 983 | } |
| 984 | |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 985 | STATIC void |
| 986 | xfs_set_diflags( |
| 987 | struct xfs_inode *ip, |
| 988 | unsigned int xflags) |
| 989 | { |
| 990 | unsigned int di_flags; |
| 991 | |
| 992 | /* can't set PREALLOC this way, just preserve it */ |
| 993 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); |
| 994 | if (xflags & XFS_XFLAG_IMMUTABLE) |
| 995 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
| 996 | if (xflags & XFS_XFLAG_APPEND) |
| 997 | di_flags |= XFS_DIFLAG_APPEND; |
| 998 | if (xflags & XFS_XFLAG_SYNC) |
| 999 | di_flags |= XFS_DIFLAG_SYNC; |
| 1000 | if (xflags & XFS_XFLAG_NOATIME) |
| 1001 | di_flags |= XFS_DIFLAG_NOATIME; |
| 1002 | if (xflags & XFS_XFLAG_NODUMP) |
| 1003 | di_flags |= XFS_DIFLAG_NODUMP; |
| 1004 | if (xflags & XFS_XFLAG_PROJINHERIT) |
| 1005 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
| 1006 | if (xflags & XFS_XFLAG_NODEFRAG) |
| 1007 | di_flags |= XFS_DIFLAG_NODEFRAG; |
| 1008 | if (xflags & XFS_XFLAG_FILESTREAM) |
| 1009 | di_flags |= XFS_DIFLAG_FILESTREAM; |
Al Viro | abbede1 | 2011-07-26 02:31:30 -0400 | [diff] [blame] | 1010 | if (S_ISDIR(ip->i_d.di_mode)) { |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1011 | if (xflags & XFS_XFLAG_RTINHERIT) |
| 1012 | di_flags |= XFS_DIFLAG_RTINHERIT; |
| 1013 | if (xflags & XFS_XFLAG_NOSYMLINKS) |
| 1014 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
| 1015 | if (xflags & XFS_XFLAG_EXTSZINHERIT) |
| 1016 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
Al Viro | abbede1 | 2011-07-26 02:31:30 -0400 | [diff] [blame] | 1017 | } else if (S_ISREG(ip->i_d.di_mode)) { |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1018 | if (xflags & XFS_XFLAG_REALTIME) |
| 1019 | di_flags |= XFS_DIFLAG_REALTIME; |
| 1020 | if (xflags & XFS_XFLAG_EXTSIZE) |
| 1021 | di_flags |= XFS_DIFLAG_EXTSIZE; |
| 1022 | } |
| 1023 | |
| 1024 | ip->i_d.di_flags = di_flags; |
| 1025 | } |
| 1026 | |
Christoph Hellwig | f13fae2 | 2008-07-21 16:16:15 +1000 | [diff] [blame] | 1027 | STATIC void |
| 1028 | xfs_diflags_to_linux( |
| 1029 | struct xfs_inode *ip) |
| 1030 | { |
David Chinner | e4f7529 | 2008-08-13 16:00:45 +1000 | [diff] [blame] | 1031 | struct inode *inode = VFS_I(ip); |
Christoph Hellwig | f13fae2 | 2008-07-21 16:16:15 +1000 | [diff] [blame] | 1032 | unsigned int xflags = xfs_ip2xflags(ip); |
| 1033 | |
| 1034 | if (xflags & XFS_XFLAG_IMMUTABLE) |
| 1035 | inode->i_flags |= S_IMMUTABLE; |
| 1036 | else |
| 1037 | inode->i_flags &= ~S_IMMUTABLE; |
| 1038 | if (xflags & XFS_XFLAG_APPEND) |
| 1039 | inode->i_flags |= S_APPEND; |
| 1040 | else |
| 1041 | inode->i_flags &= ~S_APPEND; |
| 1042 | if (xflags & XFS_XFLAG_SYNC) |
| 1043 | inode->i_flags |= S_SYNC; |
| 1044 | else |
| 1045 | inode->i_flags &= ~S_SYNC; |
| 1046 | if (xflags & XFS_XFLAG_NOATIME) |
| 1047 | inode->i_flags |= S_NOATIME; |
| 1048 | else |
| 1049 | inode->i_flags &= ~S_NOATIME; |
| 1050 | } |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1051 | |
| 1052 | #define FSX_PROJID 1 |
| 1053 | #define FSX_EXTSIZE 2 |
| 1054 | #define FSX_XFLAGS 4 |
| 1055 | #define FSX_NONBLOCK 8 |
| 1056 | |
| 1057 | STATIC int |
| 1058 | xfs_ioctl_setattr( |
| 1059 | xfs_inode_t *ip, |
| 1060 | struct fsxattr *fa, |
| 1061 | int mask) |
| 1062 | { |
| 1063 | struct xfs_mount *mp = ip->i_mount; |
| 1064 | struct xfs_trans *tp; |
| 1065 | unsigned int lock_flags = 0; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1066 | struct xfs_dquot *udqp = NULL; |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 1067 | struct xfs_dquot *pdqp = NULL; |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1068 | struct xfs_dquot *olddquot = NULL; |
| 1069 | int code; |
| 1070 | |
Christoph Hellwig | cca28fb | 2010-06-24 11:57:09 +1000 | [diff] [blame] | 1071 | trace_xfs_ioctl_setattr(ip); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1072 | |
| 1073 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
| 1074 | return XFS_ERROR(EROFS); |
| 1075 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 1076 | return XFS_ERROR(EIO); |
| 1077 | |
| 1078 | /* |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1079 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
Arkadiusz Mi?kiewicz | 23963e5 | 2010-08-26 10:19:43 +0000 | [diff] [blame] | 1080 | */ |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1081 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
| 1082 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) |
Arkadiusz Mi?kiewicz | 23963e5 | 2010-08-26 10:19:43 +0000 | [diff] [blame] | 1083 | return XFS_ERROR(EINVAL); |
| 1084 | |
| 1085 | /* |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1086 | * If disk quotas is on, we make sure that the dquots do exist on disk, |
| 1087 | * before we start any other transactions. Trying to do this later |
| 1088 | * is messy. We don't care to take a readlock to look at the ids |
| 1089 | * in inode here, because we can't hold it across the trans_reserve. |
| 1090 | * If the IDs do change before we take the ilock, we're covered |
| 1091 | * because the i_*dquot fields will get updated anyway. |
| 1092 | */ |
| 1093 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1094 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1095 | ip->i_d.di_gid, fa->fsx_projid, |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 1096 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1097 | if (code) |
| 1098 | return code; |
| 1099 | } |
| 1100 | |
| 1101 | /* |
| 1102 | * For the other attributes, we acquire the inode lock and |
| 1103 | * first do an error checking pass. |
| 1104 | */ |
| 1105 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); |
Jie Liu | 3d3c8b5 | 2013-08-12 20:49:59 +1000 | [diff] [blame] | 1106 | code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1107 | if (code) |
| 1108 | goto error_return; |
| 1109 | |
| 1110 | lock_flags = XFS_ILOCK_EXCL; |
| 1111 | xfs_ilock(ip, lock_flags); |
| 1112 | |
| 1113 | /* |
| 1114 | * CAP_FOWNER overrides the following restrictions: |
| 1115 | * |
| 1116 | * The user ID of the calling process must be equal |
| 1117 | * to the file owner ID, except in cases where the |
| 1118 | * CAP_FSETID capability is applicable. |
| 1119 | */ |
Dwight Engen | fd5e2aa | 2013-08-15 14:08:00 -0400 | [diff] [blame] | 1120 | if (!inode_owner_or_capable(VFS_I(ip))) { |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1121 | code = XFS_ERROR(EPERM); |
| 1122 | goto error_return; |
| 1123 | } |
| 1124 | |
| 1125 | /* |
| 1126 | * Do a quota reservation only if projid is actually going to change. |
Dwight Engen | fd5e2aa | 2013-08-15 14:08:00 -0400 | [diff] [blame] | 1127 | * Only allow changing of projid from init_user_ns since it is a |
| 1128 | * non user namespace aware identifier. |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1129 | */ |
| 1130 | if (mask & FSX_PROJID) { |
Dwight Engen | fd5e2aa | 2013-08-15 14:08:00 -0400 | [diff] [blame] | 1131 | if (current_user_ns() != &init_user_ns) { |
| 1132 | code = XFS_ERROR(EINVAL); |
| 1133 | goto error_return; |
| 1134 | } |
| 1135 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1136 | if (XFS_IS_QUOTA_RUNNING(mp) && |
| 1137 | XFS_IS_PQUOTA_ON(mp) && |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1138 | xfs_get_projid(ip) != fa->fsx_projid) { |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1139 | ASSERT(tp); |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 1140 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, |
| 1141 | pdqp, capable(CAP_FOWNER) ? |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1142 | XFS_QMOPT_FORCE_RES : 0); |
| 1143 | if (code) /* out of quota */ |
| 1144 | goto error_return; |
| 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | if (mask & FSX_EXTSIZE) { |
| 1149 | /* |
| 1150 | * Can't change extent size if any extents are allocated. |
| 1151 | */ |
| 1152 | if (ip->i_d.di_nextents && |
| 1153 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != |
| 1154 | fa->fsx_extsize)) { |
| 1155 | code = XFS_ERROR(EINVAL); /* EFBIG? */ |
| 1156 | goto error_return; |
| 1157 | } |
| 1158 | |
| 1159 | /* |
| 1160 | * Extent size must be a multiple of the appropriate block |
Dave Chinner | 5315837 | 2011-01-27 12:18:18 +1100 | [diff] [blame] | 1161 | * size, if set at all. It must also be smaller than the |
| 1162 | * maximum extent size supported by the filesystem. |
| 1163 | * |
| 1164 | * Also, for non-realtime files, limit the extent size hint to |
| 1165 | * half the size of the AGs in the filesystem so alignment |
| 1166 | * doesn't result in extents larger than an AG. |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1167 | */ |
| 1168 | if (fa->fsx_extsize != 0) { |
Dave Chinner | 5315837 | 2011-01-27 12:18:18 +1100 | [diff] [blame] | 1169 | xfs_extlen_t size; |
| 1170 | xfs_fsblock_t extsize_fsb; |
| 1171 | |
| 1172 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); |
| 1173 | if (extsize_fsb > MAXEXTLEN) { |
| 1174 | code = XFS_ERROR(EINVAL); |
| 1175 | goto error_return; |
| 1176 | } |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1177 | |
| 1178 | if (XFS_IS_REALTIME_INODE(ip) || |
| 1179 | ((mask & FSX_XFLAGS) && |
| 1180 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { |
| 1181 | size = mp->m_sb.sb_rextsize << |
| 1182 | mp->m_sb.sb_blocklog; |
| 1183 | } else { |
| 1184 | size = mp->m_sb.sb_blocksize; |
Dave Chinner | 5315837 | 2011-01-27 12:18:18 +1100 | [diff] [blame] | 1185 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
| 1186 | code = XFS_ERROR(EINVAL); |
| 1187 | goto error_return; |
| 1188 | } |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1189 | } |
| 1190 | |
| 1191 | if (fa->fsx_extsize % size) { |
| 1192 | code = XFS_ERROR(EINVAL); |
| 1193 | goto error_return; |
| 1194 | } |
| 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | |
| 1199 | if (mask & FSX_XFLAGS) { |
| 1200 | /* |
| 1201 | * Can't change realtime flag if any extents are allocated. |
| 1202 | */ |
| 1203 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && |
| 1204 | (XFS_IS_REALTIME_INODE(ip)) != |
| 1205 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { |
| 1206 | code = XFS_ERROR(EINVAL); /* EFBIG? */ |
| 1207 | goto error_return; |
| 1208 | } |
| 1209 | |
| 1210 | /* |
| 1211 | * If realtime flag is set then must have realtime data. |
| 1212 | */ |
| 1213 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { |
| 1214 | if ((mp->m_sb.sb_rblocks == 0) || |
| 1215 | (mp->m_sb.sb_rextsize == 0) || |
| 1216 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { |
| 1217 | code = XFS_ERROR(EINVAL); |
| 1218 | goto error_return; |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | /* |
| 1223 | * Can't modify an immutable/append-only file unless |
| 1224 | * we have appropriate permission. |
| 1225 | */ |
| 1226 | if ((ip->i_d.di_flags & |
| 1227 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || |
| 1228 | (fa->fsx_xflags & |
| 1229 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && |
| 1230 | !capable(CAP_LINUX_IMMUTABLE)) { |
| 1231 | code = XFS_ERROR(EPERM); |
| 1232 | goto error_return; |
| 1233 | } |
| 1234 | } |
| 1235 | |
Christoph Hellwig | ddc3415 | 2011-09-19 15:00:54 +0000 | [diff] [blame] | 1236 | xfs_trans_ijoin(tp, ip, 0); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1237 | |
| 1238 | /* |
| 1239 | * Change file ownership. Must be the owner or privileged. |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1240 | */ |
| 1241 | if (mask & FSX_PROJID) { |
| 1242 | /* |
| 1243 | * CAP_FSETID overrides the following restrictions: |
| 1244 | * |
| 1245 | * The set-user-ID and set-group-ID bits of a file will be |
| 1246 | * cleared upon successful return from chown() |
| 1247 | */ |
| 1248 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && |
Dwight Engen | fd5e2aa | 2013-08-15 14:08:00 -0400 | [diff] [blame] | 1249 | !inode_capable(VFS_I(ip), CAP_FSETID)) |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1250 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); |
| 1251 | |
| 1252 | /* |
| 1253 | * Change the ownerships and register quota modifications |
| 1254 | * in the transaction. |
| 1255 | */ |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1256 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1257 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
| 1258 | olddquot = xfs_qm_vop_chown(tp, ip, |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 1259 | &ip->i_pdquot, pdqp); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1260 | } |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1261 | xfs_set_projid(ip, fa->fsx_projid); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1262 | |
| 1263 | /* |
| 1264 | * We may have to rev the inode as well as |
| 1265 | * the superblock version number since projids didn't |
| 1266 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. |
| 1267 | */ |
Christoph Hellwig | 51ce16d | 2008-11-28 14:23:39 +1100 | [diff] [blame] | 1268 | if (ip->i_d.di_version == 1) |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1269 | xfs_bump_ino_vers2(tp, ip); |
| 1270 | } |
| 1271 | |
| 1272 | } |
| 1273 | |
| 1274 | if (mask & FSX_EXTSIZE) |
| 1275 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; |
Christoph Hellwig | f13fae2 | 2008-07-21 16:16:15 +1000 | [diff] [blame] | 1276 | if (mask & FSX_XFLAGS) { |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1277 | xfs_set_diflags(ip, fa->fsx_xflags); |
Christoph Hellwig | f13fae2 | 2008-07-21 16:16:15 +1000 | [diff] [blame] | 1278 | xfs_diflags_to_linux(ip); |
| 1279 | } |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1280 | |
Dave Chinner | dcd79a1 | 2010-09-28 12:27:25 +1000 | [diff] [blame] | 1281 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1282 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1283 | |
| 1284 | XFS_STATS_INC(xs_ig_attrchg); |
| 1285 | |
| 1286 | /* |
| 1287 | * If this is a synchronous mount, make sure that the |
| 1288 | * transaction goes to disk before returning to the user. |
| 1289 | * This is slightly sub-optimal in that truncates require |
| 1290 | * two sync transactions instead of one for wsync filesystems. |
| 1291 | * One for the truncate and one for the timestamps since we |
| 1292 | * don't want to change the timestamps unless we're sure the |
| 1293 | * truncate worked. Truncates are less than 1% of the laddis |
| 1294 | * mix so this probably isn't worth the trouble to optimize. |
| 1295 | */ |
| 1296 | if (mp->m_flags & XFS_MOUNT_WSYNC) |
| 1297 | xfs_trans_set_sync(tp); |
| 1298 | code = xfs_trans_commit(tp, 0); |
| 1299 | xfs_iunlock(ip, lock_flags); |
| 1300 | |
| 1301 | /* |
| 1302 | * Release any dquot(s) the inode had kept before chown. |
| 1303 | */ |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1304 | xfs_qm_dqrele(olddquot); |
| 1305 | xfs_qm_dqrele(udqp); |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 1306 | xfs_qm_dqrele(pdqp); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1307 | |
Christoph Hellwig | 288699f | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 1308 | return code; |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1309 | |
| 1310 | error_return: |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1311 | xfs_qm_dqrele(udqp); |
Chandra Seetharaman | 92f8ff7 | 2013-07-11 00:00:40 -0500 | [diff] [blame] | 1312 | xfs_qm_dqrele(pdqp); |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1313 | xfs_trans_cancel(tp, 0); |
| 1314 | if (lock_flags) |
| 1315 | xfs_iunlock(ip, lock_flags); |
| 1316 | return code; |
| 1317 | } |
| 1318 | |
Christoph Hellwig | c83bfab | 2007-10-11 17:47:00 +1000 | [diff] [blame] | 1319 | STATIC int |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1320 | xfs_ioc_fssetxattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | xfs_inode_t *ip, |
| 1322 | struct file *filp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | void __user *arg) |
| 1324 | { |
| 1325 | struct fsxattr fa; |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1326 | unsigned int mask; |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1327 | int error; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1328 | |
| 1329 | if (copy_from_user(&fa, arg, sizeof(fa))) |
| 1330 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1332 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1333 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1334 | mask |= FSX_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1336 | error = mnt_want_write_file(filp); |
| 1337 | if (error) |
| 1338 | return error; |
| 1339 | error = xfs_ioctl_setattr(ip, &fa, mask); |
| 1340 | mnt_drop_write_file(filp); |
| 1341 | return -error; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1342 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1344 | STATIC int |
| 1345 | xfs_ioc_getxflags( |
| 1346 | xfs_inode_t *ip, |
| 1347 | void __user *arg) |
| 1348 | { |
| 1349 | unsigned int flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1351 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
| 1352 | if (copy_to_user(arg, &flags, sizeof(flags))) |
| 1353 | return -EFAULT; |
| 1354 | return 0; |
| 1355 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1357 | STATIC int |
| 1358 | xfs_ioc_setxflags( |
| 1359 | xfs_inode_t *ip, |
| 1360 | struct file *filp, |
| 1361 | void __user *arg) |
| 1362 | { |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1363 | struct fsxattr fa; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1364 | unsigned int flags; |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1365 | unsigned int mask; |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1366 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1368 | if (copy_from_user(&flags, arg, sizeof(flags))) |
| 1369 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1371 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
| 1372 | FS_NOATIME_FL | FS_NODUMP_FL | \ |
| 1373 | FS_SYNC_FL)) |
| 1374 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1376 | mask = FSX_XFLAGS; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1377 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
Christoph Hellwig | 25fe55e | 2008-07-18 17:13:20 +1000 | [diff] [blame] | 1378 | mask |= FSX_NONBLOCK; |
| 1379 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1381 | error = mnt_want_write_file(filp); |
| 1382 | if (error) |
| 1383 | return error; |
| 1384 | error = xfs_ioctl_setattr(ip, &fa, mask); |
| 1385 | mnt_drop_write_file(filp); |
| 1386 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | } |
| 1388 | |
| 1389 | STATIC int |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1390 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) |
| 1391 | { |
| 1392 | struct getbmap __user *base = *ap; |
| 1393 | |
| 1394 | /* copy only getbmap portion (not getbmapx) */ |
| 1395 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) |
| 1396 | return XFS_ERROR(EFAULT); |
| 1397 | |
| 1398 | *ap += sizeof(struct getbmap); |
| 1399 | return 0; |
| 1400 | } |
| 1401 | |
| 1402 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | xfs_ioc_getbmap( |
Christoph Hellwig | 993386c | 2007-08-28 16:12:30 +1000 | [diff] [blame] | 1404 | struct xfs_inode *ip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | int ioflags, |
| 1406 | unsigned int cmd, |
| 1407 | void __user *arg) |
| 1408 | { |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1409 | struct getbmapx bmx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | int error; |
| 1411 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1412 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | return -XFS_ERROR(EFAULT); |
| 1414 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1415 | if (bmx.bmv_count < 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | return -XFS_ERROR(EINVAL); |
| 1417 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1418 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | if (ioflags & IO_INVIS) |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1420 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1422 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
| 1423 | (struct getbmap *)arg+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | if (error) |
| 1425 | return -error; |
| 1426 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1427 | /* copy back header - only size of getbmap */ |
| 1428 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | return -XFS_ERROR(EFAULT); |
| 1430 | return 0; |
| 1431 | } |
| 1432 | |
| 1433 | STATIC int |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1434 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) |
| 1435 | { |
| 1436 | struct getbmapx __user *base = *ap; |
| 1437 | |
| 1438 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) |
| 1439 | return XFS_ERROR(EFAULT); |
| 1440 | |
| 1441 | *ap += sizeof(struct getbmapx); |
| 1442 | return 0; |
| 1443 | } |
| 1444 | |
| 1445 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | xfs_ioc_getbmapx( |
Christoph Hellwig | 993386c | 2007-08-28 16:12:30 +1000 | [diff] [blame] | 1447 | struct xfs_inode *ip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | void __user *arg) |
| 1449 | { |
| 1450 | struct getbmapx bmx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | int error; |
| 1452 | |
| 1453 | if (copy_from_user(&bmx, arg, sizeof(bmx))) |
| 1454 | return -XFS_ERROR(EFAULT); |
| 1455 | |
| 1456 | if (bmx.bmv_count < 2) |
| 1457 | return -XFS_ERROR(EINVAL); |
| 1458 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1459 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | return -XFS_ERROR(EINVAL); |
| 1461 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1462 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
| 1463 | (struct getbmapx *)arg+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | if (error) |
| 1465 | return -error; |
| 1466 | |
Eric Sandeen | 8a7141a | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 1467 | /* copy back header */ |
| 1468 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | return -XFS_ERROR(EFAULT); |
| 1470 | |
| 1471 | return 0; |
| 1472 | } |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1473 | |
Dave Chinner | a133d95 | 2013-08-12 20:49:48 +1000 | [diff] [blame] | 1474 | int |
| 1475 | xfs_ioc_swapext( |
| 1476 | xfs_swapext_t *sxp) |
| 1477 | { |
| 1478 | xfs_inode_t *ip, *tip; |
| 1479 | struct fd f, tmp; |
| 1480 | int error = 0; |
| 1481 | |
| 1482 | /* Pull information for the target fd */ |
| 1483 | f = fdget((int)sxp->sx_fdtarget); |
| 1484 | if (!f.file) { |
| 1485 | error = XFS_ERROR(EINVAL); |
| 1486 | goto out; |
| 1487 | } |
| 1488 | |
| 1489 | if (!(f.file->f_mode & FMODE_WRITE) || |
| 1490 | !(f.file->f_mode & FMODE_READ) || |
| 1491 | (f.file->f_flags & O_APPEND)) { |
| 1492 | error = XFS_ERROR(EBADF); |
| 1493 | goto out_put_file; |
| 1494 | } |
| 1495 | |
| 1496 | tmp = fdget((int)sxp->sx_fdtmp); |
| 1497 | if (!tmp.file) { |
| 1498 | error = XFS_ERROR(EINVAL); |
| 1499 | goto out_put_file; |
| 1500 | } |
| 1501 | |
| 1502 | if (!(tmp.file->f_mode & FMODE_WRITE) || |
| 1503 | !(tmp.file->f_mode & FMODE_READ) || |
| 1504 | (tmp.file->f_flags & O_APPEND)) { |
| 1505 | error = XFS_ERROR(EBADF); |
| 1506 | goto out_put_tmp_file; |
| 1507 | } |
| 1508 | |
| 1509 | if (IS_SWAPFILE(file_inode(f.file)) || |
| 1510 | IS_SWAPFILE(file_inode(tmp.file))) { |
| 1511 | error = XFS_ERROR(EINVAL); |
| 1512 | goto out_put_tmp_file; |
| 1513 | } |
| 1514 | |
| 1515 | ip = XFS_I(file_inode(f.file)); |
| 1516 | tip = XFS_I(file_inode(tmp.file)); |
| 1517 | |
| 1518 | if (ip->i_mount != tip->i_mount) { |
| 1519 | error = XFS_ERROR(EINVAL); |
| 1520 | goto out_put_tmp_file; |
| 1521 | } |
| 1522 | |
| 1523 | if (ip->i_ino == tip->i_ino) { |
| 1524 | error = XFS_ERROR(EINVAL); |
| 1525 | goto out_put_tmp_file; |
| 1526 | } |
| 1527 | |
| 1528 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { |
| 1529 | error = XFS_ERROR(EIO); |
| 1530 | goto out_put_tmp_file; |
| 1531 | } |
| 1532 | |
| 1533 | error = xfs_swap_extents(ip, tip, sxp); |
| 1534 | |
| 1535 | out_put_tmp_file: |
| 1536 | fdput(tmp); |
| 1537 | out_put_file: |
| 1538 | fdput(f); |
| 1539 | out: |
| 1540 | return error; |
| 1541 | } |
| 1542 | |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 1543 | /* |
| 1544 | * Note: some of the ioctl's return positive numbers as a |
| 1545 | * byte count indicating success, such as readlink_by_handle. |
| 1546 | * So we don't "sign flip" like most other routines. This means |
| 1547 | * true errors need to be returned as a negative value. |
| 1548 | */ |
| 1549 | long |
| 1550 | xfs_file_ioctl( |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1551 | struct file *filp, |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1552 | unsigned int cmd, |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 1553 | unsigned long p) |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1554 | { |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 1555 | struct inode *inode = file_inode(filp); |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 1556 | struct xfs_inode *ip = XFS_I(inode); |
| 1557 | struct xfs_mount *mp = ip->i_mount; |
| 1558 | void __user *arg = (void __user *)p; |
| 1559 | int ioflags = 0; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1560 | int error; |
| 1561 | |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 1562 | if (filp->f_mode & FMODE_NOCMTIME) |
| 1563 | ioflags |= IO_INVIS; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1564 | |
Christoph Hellwig | cca28fb | 2010-06-24 11:57:09 +1000 | [diff] [blame] | 1565 | trace_xfs_file_ioctl(ip); |
Christoph Hellwig | 4d4be48 | 2008-12-09 04:47:33 -0500 | [diff] [blame] | 1566 | |
| 1567 | switch (cmd) { |
Christoph Hellwig | a46db60 | 2011-01-07 13:02:04 +0000 | [diff] [blame] | 1568 | case FITRIM: |
| 1569 | return xfs_ioc_trim(mp, arg); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1570 | case XFS_IOC_ALLOCSP: |
| 1571 | case XFS_IOC_FREESP: |
| 1572 | case XFS_IOC_RESVSP: |
| 1573 | case XFS_IOC_UNRESVSP: |
| 1574 | case XFS_IOC_ALLOCSP64: |
| 1575 | case XFS_IOC_FREESP64: |
| 1576 | case XFS_IOC_RESVSP64: |
Dave Chinner | 4472235 | 2010-08-24 12:02:11 +1000 | [diff] [blame] | 1577 | case XFS_IOC_UNRESVSP64: |
| 1578 | case XFS_IOC_ZERO_RANGE: { |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1579 | xfs_flock64_t bf; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1580 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1581 | if (copy_from_user(&bf, arg, sizeof(bf))) |
| 1582 | return -XFS_ERROR(EFAULT); |
| 1583 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); |
| 1584 | } |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1585 | case XFS_IOC_DIOINFO: { |
| 1586 | struct dioattr da; |
| 1587 | xfs_buftarg_t *target = |
| 1588 | XFS_IS_REALTIME_INODE(ip) ? |
| 1589 | mp->m_rtdev_targp : mp->m_ddev_targp; |
| 1590 | |
| 1591 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; |
| 1592 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
| 1593 | |
| 1594 | if (copy_to_user(arg, &da, sizeof(da))) |
| 1595 | return -XFS_ERROR(EFAULT); |
| 1596 | return 0; |
| 1597 | } |
| 1598 | |
| 1599 | case XFS_IOC_FSBULKSTAT_SINGLE: |
| 1600 | case XFS_IOC_FSBULKSTAT: |
| 1601 | case XFS_IOC_FSINUMBERS: |
| 1602 | return xfs_ioc_bulkstat(mp, cmd, arg); |
| 1603 | |
| 1604 | case XFS_IOC_FSGEOMETRY_V1: |
| 1605 | return xfs_ioc_fsgeometry_v1(mp, arg); |
| 1606 | |
| 1607 | case XFS_IOC_FSGEOMETRY: |
| 1608 | return xfs_ioc_fsgeometry(mp, arg); |
| 1609 | |
| 1610 | case XFS_IOC_GETVERSION: |
| 1611 | return put_user(inode->i_generation, (int __user *)arg); |
| 1612 | |
| 1613 | case XFS_IOC_FSGETXATTR: |
| 1614 | return xfs_ioc_fsgetxattr(ip, 0, arg); |
| 1615 | case XFS_IOC_FSGETXATTRA: |
| 1616 | return xfs_ioc_fsgetxattr(ip, 1, arg); |
Lachlan McIlroy | 3b2816b | 2008-04-18 12:43:35 +1000 | [diff] [blame] | 1617 | case XFS_IOC_FSSETXATTR: |
Lachlan McIlroy | 65e67f5 | 2008-04-18 12:59:45 +1000 | [diff] [blame] | 1618 | return xfs_ioc_fssetxattr(ip, filp, arg); |
| 1619 | case XFS_IOC_GETXFLAGS: |
| 1620 | return xfs_ioc_getxflags(ip, arg); |
| 1621 | case XFS_IOC_SETXFLAGS: |
| 1622 | return xfs_ioc_setxflags(ip, filp, arg); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1623 | |
| 1624 | case XFS_IOC_FSSETDM: { |
| 1625 | struct fsdmidata dmi; |
| 1626 | |
| 1627 | if (copy_from_user(&dmi, arg, sizeof(dmi))) |
| 1628 | return -XFS_ERROR(EFAULT); |
| 1629 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1630 | error = mnt_want_write_file(filp); |
| 1631 | if (error) |
| 1632 | return error; |
| 1633 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1634 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
| 1635 | dmi.fsd_dmstate); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1636 | mnt_drop_write_file(filp); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1637 | return -error; |
| 1638 | } |
| 1639 | |
| 1640 | case XFS_IOC_GETBMAP: |
| 1641 | case XFS_IOC_GETBMAPA: |
| 1642 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); |
| 1643 | |
| 1644 | case XFS_IOC_GETBMAPX: |
| 1645 | return xfs_ioc_getbmapx(ip, arg); |
| 1646 | |
| 1647 | case XFS_IOC_FD_TO_HANDLE: |
| 1648 | case XFS_IOC_PATH_TO_HANDLE: |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1649 | case XFS_IOC_PATH_TO_FSHANDLE: { |
| 1650 | xfs_fsop_handlereq_t hreq; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1651 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1652 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
| 1653 | return -XFS_ERROR(EFAULT); |
| 1654 | return xfs_find_handle(cmd, &hreq); |
| 1655 | } |
| 1656 | case XFS_IOC_OPEN_BY_HANDLE: { |
| 1657 | xfs_fsop_handlereq_t hreq; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1658 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1659 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
| 1660 | return -XFS_ERROR(EFAULT); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 1661 | return xfs_open_by_handle(filp, &hreq); |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1662 | } |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1663 | case XFS_IOC_FSSETDM_BY_HANDLE: |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 1664 | return xfs_fssetdm_by_handle(filp, arg); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1665 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1666 | case XFS_IOC_READLINK_BY_HANDLE: { |
| 1667 | xfs_fsop_handlereq_t hreq; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1668 | |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1669 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
| 1670 | return -XFS_ERROR(EFAULT); |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 1671 | return xfs_readlink_by_handle(filp, &hreq); |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1672 | } |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1673 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 1674 | return xfs_attrlist_by_handle(filp, arg); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1675 | |
| 1676 | case XFS_IOC_ATTRMULTI_BY_HANDLE: |
Christoph Hellwig | d296d30 | 2009-01-19 02:02:57 +0100 | [diff] [blame] | 1677 | return xfs_attrmulti_by_handle(filp, arg); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1678 | |
| 1679 | case XFS_IOC_SWAPEXT: { |
sandeen@sandeen.net | 743bb465 | 2008-11-25 21:20:06 -0600 | [diff] [blame] | 1680 | struct xfs_swapext sxp; |
| 1681 | |
| 1682 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) |
| 1683 | return -XFS_ERROR(EFAULT); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1684 | error = mnt_want_write_file(filp); |
| 1685 | if (error) |
| 1686 | return error; |
Dave Chinner | a133d95 | 2013-08-12 20:49:48 +1000 | [diff] [blame] | 1687 | error = xfs_ioc_swapext(&sxp); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1688 | mnt_drop_write_file(filp); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1689 | return -error; |
| 1690 | } |
| 1691 | |
| 1692 | case XFS_IOC_FSCOUNTS: { |
| 1693 | xfs_fsop_counts_t out; |
| 1694 | |
| 1695 | error = xfs_fs_counts(mp, &out); |
| 1696 | if (error) |
| 1697 | return -error; |
| 1698 | |
| 1699 | if (copy_to_user(arg, &out, sizeof(out))) |
| 1700 | return -XFS_ERROR(EFAULT); |
| 1701 | return 0; |
| 1702 | } |
| 1703 | |
| 1704 | case XFS_IOC_SET_RESBLKS: { |
| 1705 | xfs_fsop_resblks_t inout; |
| 1706 | __uint64_t in; |
| 1707 | |
| 1708 | if (!capable(CAP_SYS_ADMIN)) |
| 1709 | return -EPERM; |
| 1710 | |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1711 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
| 1712 | return -XFS_ERROR(EROFS); |
| 1713 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1714 | if (copy_from_user(&inout, arg, sizeof(inout))) |
| 1715 | return -XFS_ERROR(EFAULT); |
| 1716 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1717 | error = mnt_want_write_file(filp); |
| 1718 | if (error) |
| 1719 | return error; |
| 1720 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1721 | /* input parameter is passed in resblks field of structure */ |
| 1722 | in = inout.resblks; |
| 1723 | error = xfs_reserve_blocks(mp, &in, &inout); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1724 | mnt_drop_write_file(filp); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1725 | if (error) |
| 1726 | return -error; |
| 1727 | |
| 1728 | if (copy_to_user(arg, &inout, sizeof(inout))) |
| 1729 | return -XFS_ERROR(EFAULT); |
| 1730 | return 0; |
| 1731 | } |
| 1732 | |
| 1733 | case XFS_IOC_GET_RESBLKS: { |
| 1734 | xfs_fsop_resblks_t out; |
| 1735 | |
| 1736 | if (!capable(CAP_SYS_ADMIN)) |
| 1737 | return -EPERM; |
| 1738 | |
| 1739 | error = xfs_reserve_blocks(mp, NULL, &out); |
| 1740 | if (error) |
| 1741 | return -error; |
| 1742 | |
| 1743 | if (copy_to_user(arg, &out, sizeof(out))) |
| 1744 | return -XFS_ERROR(EFAULT); |
| 1745 | |
| 1746 | return 0; |
| 1747 | } |
| 1748 | |
| 1749 | case XFS_IOC_FSGROWFSDATA: { |
| 1750 | xfs_growfs_data_t in; |
| 1751 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1752 | if (copy_from_user(&in, arg, sizeof(in))) |
| 1753 | return -XFS_ERROR(EFAULT); |
| 1754 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1755 | error = mnt_want_write_file(filp); |
| 1756 | if (error) |
| 1757 | return error; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1758 | error = xfs_growfs_data(mp, &in); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1759 | mnt_drop_write_file(filp); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1760 | return -error; |
| 1761 | } |
| 1762 | |
| 1763 | case XFS_IOC_FSGROWFSLOG: { |
| 1764 | xfs_growfs_log_t in; |
| 1765 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1766 | if (copy_from_user(&in, arg, sizeof(in))) |
| 1767 | return -XFS_ERROR(EFAULT); |
| 1768 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1769 | error = mnt_want_write_file(filp); |
| 1770 | if (error) |
| 1771 | return error; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1772 | error = xfs_growfs_log(mp, &in); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1773 | mnt_drop_write_file(filp); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1774 | return -error; |
| 1775 | } |
| 1776 | |
| 1777 | case XFS_IOC_FSGROWFSRT: { |
| 1778 | xfs_growfs_rt_t in; |
| 1779 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1780 | if (copy_from_user(&in, arg, sizeof(in))) |
| 1781 | return -XFS_ERROR(EFAULT); |
| 1782 | |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1783 | error = mnt_want_write_file(filp); |
| 1784 | if (error) |
| 1785 | return error; |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1786 | error = xfs_growfs_rt(mp, &in); |
Jan Kara | d9457dc | 2012-06-12 16:20:39 +0200 | [diff] [blame] | 1787 | mnt_drop_write_file(filp); |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1788 | return -error; |
| 1789 | } |
| 1790 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1791 | case XFS_IOC_GOINGDOWN: { |
| 1792 | __uint32_t in; |
| 1793 | |
| 1794 | if (!capable(CAP_SYS_ADMIN)) |
| 1795 | return -EPERM; |
| 1796 | |
| 1797 | if (get_user(in, (__uint32_t __user *)arg)) |
| 1798 | return -XFS_ERROR(EFAULT); |
| 1799 | |
| 1800 | error = xfs_fs_goingdown(mp, in); |
| 1801 | return -error; |
| 1802 | } |
| 1803 | |
| 1804 | case XFS_IOC_ERROR_INJECTION: { |
| 1805 | xfs_error_injection_t in; |
| 1806 | |
| 1807 | if (!capable(CAP_SYS_ADMIN)) |
| 1808 | return -EPERM; |
| 1809 | |
| 1810 | if (copy_from_user(&in, arg, sizeof(in))) |
| 1811 | return -XFS_ERROR(EFAULT); |
| 1812 | |
| 1813 | error = xfs_errortag_add(in.errtag, mp); |
| 1814 | return -error; |
| 1815 | } |
| 1816 | |
| 1817 | case XFS_IOC_ERROR_CLEARALL: |
| 1818 | if (!capable(CAP_SYS_ADMIN)) |
| 1819 | return -EPERM; |
| 1820 | |
| 1821 | error = xfs_errortag_clearall(mp, 1); |
| 1822 | return -error; |
| 1823 | |
Brian Foster | 8ca149d | 2012-11-07 12:21:12 -0500 | [diff] [blame] | 1824 | case XFS_IOC_FREE_EOFBLOCKS: { |
Dwight Engen | b9fe505 | 2013-08-15 14:08:02 -0400 | [diff] [blame] | 1825 | struct xfs_fs_eofblocks eofb; |
| 1826 | struct xfs_eofblocks keofb; |
Brian Foster | 8ca149d | 2012-11-07 12:21:12 -0500 | [diff] [blame] | 1827 | |
Dwight Engen | 8c567a7 | 2013-08-15 14:08:03 -0400 | [diff] [blame] | 1828 | if (!capable(CAP_SYS_ADMIN)) |
| 1829 | return -EPERM; |
| 1830 | |
| 1831 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
| 1832 | return -XFS_ERROR(EROFS); |
| 1833 | |
Brian Foster | 8ca149d | 2012-11-07 12:21:12 -0500 | [diff] [blame] | 1834 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
| 1835 | return -XFS_ERROR(EFAULT); |
| 1836 | |
Dwight Engen | b9fe505 | 2013-08-15 14:08:02 -0400 | [diff] [blame] | 1837 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
| 1838 | if (error) |
| 1839 | return -error; |
Brian Foster | 8ca149d | 2012-11-07 12:21:12 -0500 | [diff] [blame] | 1840 | |
Dwight Engen | b9fe505 | 2013-08-15 14:08:02 -0400 | [diff] [blame] | 1841 | return -xfs_icache_free_eofblocks(mp, &keofb); |
Brian Foster | 8ca149d | 2012-11-07 12:21:12 -0500 | [diff] [blame] | 1842 | } |
| 1843 | |
Lachlan McIlroy | df26cfe | 2008-04-18 11:44:03 +1000 | [diff] [blame] | 1844 | default: |
| 1845 | return -ENOTTY; |
| 1846 | } |
| 1847 | } |