Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/ocfs2/ioctl.c |
| 3 | * |
| 4 | * Copyright (C) 2006 Herbert Poetzl |
| 5 | * adapted from Remy Card's ext2/ioctl.c |
| 6 | */ |
| 7 | |
| 8 | #include <linux/fs.h> |
| 9 | #include <linux/mount.h> |
Tao Ma | 34e6c59 | 2010-01-27 10:21:52 +0800 | [diff] [blame] | 10 | #include <linux/compat.h> |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 11 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 12 | #include <cluster/masklog.h> |
| 13 | |
| 14 | #include "ocfs2.h" |
| 15 | #include "alloc.h" |
| 16 | #include "dlmglue.h" |
Mark Fasheh | b258010 | 2007-03-09 16:53:21 -0800 | [diff] [blame] | 17 | #include "file.h" |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 18 | #include "inode.h" |
| 19 | #include "journal.h" |
| 20 | |
| 21 | #include "ocfs2_fs.h" |
Adrian Bunk | 2d56251 | 2006-07-10 01:32:51 +0200 | [diff] [blame] | 22 | #include "ioctl.h" |
Tao Ma | d659072 | 2007-12-18 15:47:03 +0800 | [diff] [blame] | 23 | #include "resize.h" |
Tao Ma | bd50873 | 2009-09-21 11:25:14 +0800 | [diff] [blame] | 24 | #include "refcounttree.h" |
Tristan Ye | 3e5db17 | 2011-05-24 15:25:54 +0800 | [diff] [blame] | 25 | #include "sysfile.h" |
| 26 | #include "dir.h" |
| 27 | #include "buffer_head_io.h" |
Tristan Ye | d24a10b9 | 2011-05-24 15:27:17 +0800 | [diff] [blame] | 28 | #include "suballoc.h" |
Tristan Ye | 53069d4 | 2011-05-25 14:23:43 +0800 | [diff] [blame] | 29 | #include "move_extents.h" |
Adrian Bunk | 2d56251 | 2006-07-10 01:32:51 +0200 | [diff] [blame] | 30 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 31 | #include <linux/ext2_fs.h> |
| 32 | |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 33 | #define o2info_from_user(a, b) \ |
| 34 | copy_from_user(&(a), (b), sizeof(a)) |
| 35 | #define o2info_to_user(a, b) \ |
| 36 | copy_to_user((typeof(a) __user *)b, &(a), sizeof(a)) |
| 37 | |
| 38 | /* |
| 39 | * This call is void because we are already reporting an error that may |
| 40 | * be -EFAULT. The error will be returned from the ioctl(2) call. It's |
| 41 | * just a best-effort to tell userspace that this request caused the error. |
| 42 | */ |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 43 | static inline void o2info_set_request_error(struct ocfs2_info_request *kreq, |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 44 | struct ocfs2_info_request __user *req) |
| 45 | { |
| 46 | kreq->ir_flags |= OCFS2_INFO_FL_ERROR; |
| 47 | (void)put_user(kreq->ir_flags, (__u32 __user *)&(req->ir_flags)); |
| 48 | } |
| 49 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 50 | static inline void o2info_set_request_filled(struct ocfs2_info_request *req) |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 51 | { |
| 52 | req->ir_flags |= OCFS2_INFO_FL_FILLED; |
| 53 | } |
| 54 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 55 | static inline void o2info_clear_request_filled(struct ocfs2_info_request *req) |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 56 | { |
| 57 | req->ir_flags &= ~OCFS2_INFO_FL_FILLED; |
| 58 | } |
| 59 | |
Tristan Ye | 3e5db17 | 2011-05-24 15:25:54 +0800 | [diff] [blame] | 60 | static inline int o2info_coherent(struct ocfs2_info_request *req) |
| 61 | { |
| 62 | return (!(req->ir_flags & OCFS2_INFO_FL_NON_COHERENT)); |
| 63 | } |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 64 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 65 | static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags) |
| 66 | { |
| 67 | int status; |
| 68 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 69 | status = ocfs2_inode_lock(inode, NULL, 0); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 70 | if (status < 0) { |
| 71 | mlog_errno(status); |
| 72 | return status; |
| 73 | } |
Jan Kara | 6e4b0d5 | 2007-04-27 11:08:01 -0700 | [diff] [blame] | 74 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 75 | *flags = OCFS2_I(inode)->ip_attr; |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 76 | ocfs2_inode_unlock(inode, 0); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 77 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 78 | return status; |
| 79 | } |
| 80 | |
| 81 | static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags, |
| 82 | unsigned mask) |
| 83 | { |
| 84 | struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode); |
| 85 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 86 | handle_t *handle = NULL; |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 87 | struct buffer_head *bh = NULL; |
| 88 | unsigned oldflags; |
| 89 | int status; |
| 90 | |
| 91 | mutex_lock(&inode->i_mutex); |
| 92 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 93 | status = ocfs2_inode_lock(inode, &bh, 1); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 94 | if (status < 0) { |
| 95 | mlog_errno(status); |
| 96 | goto bail; |
| 97 | } |
| 98 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 99 | status = -EACCES; |
Serge E. Hallyn | 2e14967 | 2011-03-23 16:43:26 -0700 | [diff] [blame] | 100 | if (!inode_owner_or_capable(inode)) |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 101 | goto bail_unlock; |
| 102 | |
| 103 | if (!S_ISDIR(inode->i_mode)) |
| 104 | flags &= ~OCFS2_DIRSYNC_FL; |
| 105 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 106 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 107 | if (IS_ERR(handle)) { |
| 108 | status = PTR_ERR(handle); |
| 109 | mlog_errno(status); |
| 110 | goto bail_unlock; |
| 111 | } |
| 112 | |
| 113 | oldflags = ocfs2_inode->ip_attr; |
| 114 | flags = flags & mask; |
| 115 | flags |= oldflags & ~mask; |
| 116 | |
| 117 | /* |
| 118 | * The IMMUTABLE and APPEND_ONLY flags can only be changed by |
| 119 | * the relevant capability. |
| 120 | */ |
| 121 | status = -EPERM; |
| 122 | if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) & |
| 123 | (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) { |
| 124 | if (!capable(CAP_LINUX_IMMUTABLE)) |
Wengang Wang | b8a0ae5 | 2011-10-12 15:22:15 +0800 | [diff] [blame] | 125 | goto bail_commit; |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | ocfs2_inode->ip_attr = flags; |
| 129 | ocfs2_set_inode_flags(inode); |
| 130 | |
| 131 | status = ocfs2_mark_inode_dirty(handle, inode, bh); |
| 132 | if (status < 0) |
| 133 | mlog_errno(status); |
| 134 | |
Wengang Wang | b8a0ae5 | 2011-10-12 15:22:15 +0800 | [diff] [blame] | 135 | bail_commit: |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 136 | ocfs2_commit_trans(osb, handle); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 137 | bail_unlock: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 138 | ocfs2_inode_unlock(inode, 1); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 139 | bail: |
| 140 | mutex_unlock(&inode->i_mutex); |
| 141 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 142 | brelse(bh); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 143 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 144 | return status; |
| 145 | } |
| 146 | |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 147 | int ocfs2_info_handle_blocksize(struct inode *inode, |
| 148 | struct ocfs2_info_request __user *req) |
| 149 | { |
| 150 | int status = -EFAULT; |
| 151 | struct ocfs2_info_blocksize oib; |
| 152 | |
| 153 | if (o2info_from_user(oib, req)) |
| 154 | goto bail; |
| 155 | |
| 156 | oib.ib_blocksize = inode->i_sb->s_blocksize; |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 157 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 158 | o2info_set_request_filled(&oib.ib_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 159 | |
| 160 | if (o2info_to_user(oib, req)) |
| 161 | goto bail; |
| 162 | |
| 163 | status = 0; |
| 164 | bail: |
| 165 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 166 | o2info_set_request_error(&oib.ib_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 167 | |
| 168 | return status; |
| 169 | } |
| 170 | |
| 171 | int ocfs2_info_handle_clustersize(struct inode *inode, |
| 172 | struct ocfs2_info_request __user *req) |
| 173 | { |
| 174 | int status = -EFAULT; |
| 175 | struct ocfs2_info_clustersize oic; |
| 176 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 177 | |
| 178 | if (o2info_from_user(oic, req)) |
| 179 | goto bail; |
| 180 | |
| 181 | oic.ic_clustersize = osb->s_clustersize; |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 182 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 183 | o2info_set_request_filled(&oic.ic_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 184 | |
| 185 | if (o2info_to_user(oic, req)) |
| 186 | goto bail; |
| 187 | |
| 188 | status = 0; |
| 189 | bail: |
| 190 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 191 | o2info_set_request_error(&oic.ic_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 192 | |
| 193 | return status; |
| 194 | } |
| 195 | |
| 196 | int ocfs2_info_handle_maxslots(struct inode *inode, |
| 197 | struct ocfs2_info_request __user *req) |
| 198 | { |
| 199 | int status = -EFAULT; |
| 200 | struct ocfs2_info_maxslots oim; |
| 201 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 202 | |
| 203 | if (o2info_from_user(oim, req)) |
| 204 | goto bail; |
| 205 | |
| 206 | oim.im_max_slots = osb->max_slots; |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 207 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 208 | o2info_set_request_filled(&oim.im_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 209 | |
| 210 | if (o2info_to_user(oim, req)) |
| 211 | goto bail; |
| 212 | |
| 213 | status = 0; |
| 214 | bail: |
| 215 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 216 | o2info_set_request_error(&oim.im_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 217 | |
| 218 | return status; |
| 219 | } |
| 220 | |
| 221 | int ocfs2_info_handle_label(struct inode *inode, |
| 222 | struct ocfs2_info_request __user *req) |
| 223 | { |
| 224 | int status = -EFAULT; |
| 225 | struct ocfs2_info_label oil; |
| 226 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 227 | |
| 228 | if (o2info_from_user(oil, req)) |
| 229 | goto bail; |
| 230 | |
| 231 | memcpy(oil.il_label, osb->vol_label, OCFS2_MAX_VOL_LABEL_LEN); |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 232 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 233 | o2info_set_request_filled(&oil.il_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 234 | |
| 235 | if (o2info_to_user(oil, req)) |
| 236 | goto bail; |
| 237 | |
| 238 | status = 0; |
| 239 | bail: |
| 240 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 241 | o2info_set_request_error(&oil.il_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 242 | |
| 243 | return status; |
| 244 | } |
| 245 | |
| 246 | int ocfs2_info_handle_uuid(struct inode *inode, |
| 247 | struct ocfs2_info_request __user *req) |
| 248 | { |
| 249 | int status = -EFAULT; |
| 250 | struct ocfs2_info_uuid oiu; |
| 251 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 252 | |
| 253 | if (o2info_from_user(oiu, req)) |
| 254 | goto bail; |
| 255 | |
| 256 | memcpy(oiu.iu_uuid_str, osb->uuid_str, OCFS2_TEXT_UUID_LEN + 1); |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 257 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 258 | o2info_set_request_filled(&oiu.iu_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 259 | |
| 260 | if (o2info_to_user(oiu, req)) |
| 261 | goto bail; |
| 262 | |
| 263 | status = 0; |
| 264 | bail: |
| 265 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 266 | o2info_set_request_error(&oiu.iu_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 267 | |
| 268 | return status; |
| 269 | } |
| 270 | |
| 271 | int ocfs2_info_handle_fs_features(struct inode *inode, |
| 272 | struct ocfs2_info_request __user *req) |
| 273 | { |
| 274 | int status = -EFAULT; |
| 275 | struct ocfs2_info_fs_features oif; |
| 276 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 277 | |
| 278 | if (o2info_from_user(oif, req)) |
| 279 | goto bail; |
| 280 | |
| 281 | oif.if_compat_features = osb->s_feature_compat; |
| 282 | oif.if_incompat_features = osb->s_feature_incompat; |
| 283 | oif.if_ro_compat_features = osb->s_feature_ro_compat; |
Tristan Ye | 1936a26 | 2011-01-30 14:25:59 +0800 | [diff] [blame] | 284 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 285 | o2info_set_request_filled(&oif.if_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 286 | |
| 287 | if (o2info_to_user(oif, req)) |
| 288 | goto bail; |
| 289 | |
| 290 | status = 0; |
| 291 | bail: |
| 292 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 293 | o2info_set_request_error(&oif.if_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 294 | |
| 295 | return status; |
| 296 | } |
| 297 | |
| 298 | int ocfs2_info_handle_journal_size(struct inode *inode, |
| 299 | struct ocfs2_info_request __user *req) |
| 300 | { |
| 301 | int status = -EFAULT; |
| 302 | struct ocfs2_info_journal_size oij; |
| 303 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 304 | |
| 305 | if (o2info_from_user(oij, req)) |
| 306 | goto bail; |
| 307 | |
| 308 | oij.ij_journal_size = osb->journal->j_inode->i_size; |
| 309 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 310 | o2info_set_request_filled(&oij.ij_req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 311 | |
| 312 | if (o2info_to_user(oij, req)) |
| 313 | goto bail; |
| 314 | |
| 315 | status = 0; |
| 316 | bail: |
| 317 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 318 | o2info_set_request_error(&oij.ij_req, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 319 | |
| 320 | return status; |
| 321 | } |
| 322 | |
Tristan Ye | 3e5db17 | 2011-05-24 15:25:54 +0800 | [diff] [blame] | 323 | int ocfs2_info_scan_inode_alloc(struct ocfs2_super *osb, |
| 324 | struct inode *inode_alloc, u64 blkno, |
| 325 | struct ocfs2_info_freeinode *fi, u32 slot) |
| 326 | { |
| 327 | int status = 0, unlock = 0; |
| 328 | |
| 329 | struct buffer_head *bh = NULL; |
| 330 | struct ocfs2_dinode *dinode_alloc = NULL; |
| 331 | |
| 332 | if (inode_alloc) |
| 333 | mutex_lock(&inode_alloc->i_mutex); |
| 334 | |
| 335 | if (o2info_coherent(&fi->ifi_req)) { |
| 336 | status = ocfs2_inode_lock(inode_alloc, &bh, 0); |
| 337 | if (status < 0) { |
| 338 | mlog_errno(status); |
| 339 | goto bail; |
| 340 | } |
| 341 | unlock = 1; |
| 342 | } else { |
| 343 | status = ocfs2_read_blocks_sync(osb, blkno, 1, &bh); |
| 344 | if (status < 0) { |
| 345 | mlog_errno(status); |
| 346 | goto bail; |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | dinode_alloc = (struct ocfs2_dinode *)bh->b_data; |
| 351 | |
| 352 | fi->ifi_stat[slot].lfi_total = |
| 353 | le32_to_cpu(dinode_alloc->id1.bitmap1.i_total); |
| 354 | fi->ifi_stat[slot].lfi_free = |
| 355 | le32_to_cpu(dinode_alloc->id1.bitmap1.i_total) - |
| 356 | le32_to_cpu(dinode_alloc->id1.bitmap1.i_used); |
| 357 | |
| 358 | bail: |
| 359 | if (unlock) |
| 360 | ocfs2_inode_unlock(inode_alloc, 0); |
| 361 | |
| 362 | if (inode_alloc) |
| 363 | mutex_unlock(&inode_alloc->i_mutex); |
| 364 | |
| 365 | brelse(bh); |
| 366 | |
| 367 | return status; |
| 368 | } |
| 369 | |
| 370 | int ocfs2_info_handle_freeinode(struct inode *inode, |
| 371 | struct ocfs2_info_request __user *req) |
| 372 | { |
| 373 | u32 i; |
| 374 | u64 blkno = -1; |
| 375 | char namebuf[40]; |
| 376 | int status = -EFAULT, type = INODE_ALLOC_SYSTEM_INODE; |
| 377 | struct ocfs2_info_freeinode *oifi = NULL; |
| 378 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 379 | struct inode *inode_alloc = NULL; |
| 380 | |
| 381 | oifi = kzalloc(sizeof(struct ocfs2_info_freeinode), GFP_KERNEL); |
| 382 | if (!oifi) { |
| 383 | status = -ENOMEM; |
| 384 | mlog_errno(status); |
Dan Carpenter | 87f0d5c | 2011-05-29 22:57:16 +0300 | [diff] [blame] | 385 | goto out_err; |
Tristan Ye | 3e5db17 | 2011-05-24 15:25:54 +0800 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | if (o2info_from_user(*oifi, req)) |
| 389 | goto bail; |
| 390 | |
| 391 | oifi->ifi_slotnum = osb->max_slots; |
| 392 | |
| 393 | for (i = 0; i < oifi->ifi_slotnum; i++) { |
| 394 | if (o2info_coherent(&oifi->ifi_req)) { |
| 395 | inode_alloc = ocfs2_get_system_file_inode(osb, type, i); |
| 396 | if (!inode_alloc) { |
| 397 | mlog(ML_ERROR, "unable to get alloc inode in " |
| 398 | "slot %u\n", i); |
| 399 | status = -EIO; |
| 400 | goto bail; |
| 401 | } |
| 402 | } else { |
| 403 | ocfs2_sprintf_system_inode_name(namebuf, |
| 404 | sizeof(namebuf), |
| 405 | type, i); |
| 406 | status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, |
| 407 | namebuf, |
| 408 | strlen(namebuf), |
| 409 | &blkno); |
| 410 | if (status < 0) { |
| 411 | status = -ENOENT; |
| 412 | goto bail; |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | status = ocfs2_info_scan_inode_alloc(osb, inode_alloc, blkno, oifi, i); |
| 417 | if (status < 0) |
| 418 | goto bail; |
| 419 | |
| 420 | iput(inode_alloc); |
| 421 | inode_alloc = NULL; |
| 422 | } |
| 423 | |
| 424 | o2info_set_request_filled(&oifi->ifi_req); |
| 425 | |
| 426 | if (o2info_to_user(*oifi, req)) |
| 427 | goto bail; |
| 428 | |
| 429 | status = 0; |
| 430 | bail: |
| 431 | if (status) |
| 432 | o2info_set_request_error(&oifi->ifi_req, req); |
| 433 | |
| 434 | kfree(oifi); |
Dan Carpenter | 87f0d5c | 2011-05-29 22:57:16 +0300 | [diff] [blame] | 435 | out_err: |
Tristan Ye | 3e5db17 | 2011-05-24 15:25:54 +0800 | [diff] [blame] | 436 | return status; |
| 437 | } |
| 438 | |
Tristan Ye | d24a10b9 | 2011-05-24 15:27:17 +0800 | [diff] [blame] | 439 | static void o2ffg_update_histogram(struct ocfs2_info_free_chunk_list *hist, |
| 440 | unsigned int chunksize) |
| 441 | { |
| 442 | int index; |
| 443 | |
| 444 | index = __ilog2_u32(chunksize); |
| 445 | if (index >= OCFS2_INFO_MAX_HIST) |
| 446 | index = OCFS2_INFO_MAX_HIST - 1; |
| 447 | |
| 448 | hist->fc_chunks[index]++; |
| 449 | hist->fc_clusters[index] += chunksize; |
| 450 | } |
| 451 | |
| 452 | static void o2ffg_update_stats(struct ocfs2_info_freefrag_stats *stats, |
| 453 | unsigned int chunksize) |
| 454 | { |
| 455 | if (chunksize > stats->ffs_max) |
| 456 | stats->ffs_max = chunksize; |
| 457 | |
| 458 | if (chunksize < stats->ffs_min) |
| 459 | stats->ffs_min = chunksize; |
| 460 | |
| 461 | stats->ffs_avg += chunksize; |
| 462 | stats->ffs_free_chunks_real++; |
| 463 | } |
| 464 | |
| 465 | void ocfs2_info_update_ffg(struct ocfs2_info_freefrag *ffg, |
| 466 | unsigned int chunksize) |
| 467 | { |
| 468 | o2ffg_update_histogram(&(ffg->iff_ffs.ffs_fc_hist), chunksize); |
| 469 | o2ffg_update_stats(&(ffg->iff_ffs), chunksize); |
| 470 | } |
| 471 | |
| 472 | int ocfs2_info_freefrag_scan_chain(struct ocfs2_super *osb, |
| 473 | struct inode *gb_inode, |
| 474 | struct ocfs2_dinode *gb_dinode, |
| 475 | struct ocfs2_chain_rec *rec, |
| 476 | struct ocfs2_info_freefrag *ffg, |
| 477 | u32 chunks_in_group) |
| 478 | { |
| 479 | int status = 0, used; |
| 480 | u64 blkno; |
| 481 | |
| 482 | struct buffer_head *bh = NULL; |
| 483 | struct ocfs2_group_desc *bg = NULL; |
| 484 | |
| 485 | unsigned int max_bits, num_clusters; |
| 486 | unsigned int offset = 0, cluster, chunk; |
| 487 | unsigned int chunk_free, last_chunksize = 0; |
| 488 | |
| 489 | if (!le32_to_cpu(rec->c_free)) |
| 490 | goto bail; |
| 491 | |
| 492 | do { |
| 493 | if (!bg) |
| 494 | blkno = le64_to_cpu(rec->c_blkno); |
| 495 | else |
| 496 | blkno = le64_to_cpu(bg->bg_next_group); |
| 497 | |
| 498 | if (bh) { |
| 499 | brelse(bh); |
| 500 | bh = NULL; |
| 501 | } |
| 502 | |
| 503 | if (o2info_coherent(&ffg->iff_req)) |
| 504 | status = ocfs2_read_group_descriptor(gb_inode, |
| 505 | gb_dinode, |
| 506 | blkno, &bh); |
| 507 | else |
| 508 | status = ocfs2_read_blocks_sync(osb, blkno, 1, &bh); |
| 509 | |
| 510 | if (status < 0) { |
| 511 | mlog(ML_ERROR, "Can't read the group descriptor # " |
| 512 | "%llu from device.", (unsigned long long)blkno); |
| 513 | status = -EIO; |
| 514 | goto bail; |
| 515 | } |
| 516 | |
| 517 | bg = (struct ocfs2_group_desc *)bh->b_data; |
| 518 | |
| 519 | if (!le16_to_cpu(bg->bg_free_bits_count)) |
| 520 | continue; |
| 521 | |
| 522 | max_bits = le16_to_cpu(bg->bg_bits); |
| 523 | offset = 0; |
| 524 | |
| 525 | for (chunk = 0; chunk < chunks_in_group; chunk++) { |
| 526 | /* |
| 527 | * last chunk may be not an entire one. |
| 528 | */ |
| 529 | if ((offset + ffg->iff_chunksize) > max_bits) |
| 530 | num_clusters = max_bits - offset; |
| 531 | else |
| 532 | num_clusters = ffg->iff_chunksize; |
| 533 | |
| 534 | chunk_free = 0; |
| 535 | for (cluster = 0; cluster < num_clusters; cluster++) { |
| 536 | used = ocfs2_test_bit(offset, |
| 537 | (unsigned long *)bg->bg_bitmap); |
| 538 | /* |
| 539 | * - chunk_free counts free clusters in #N chunk. |
| 540 | * - last_chunksize records the size(in) clusters |
| 541 | * for the last real free chunk being counted. |
| 542 | */ |
| 543 | if (!used) { |
| 544 | last_chunksize++; |
| 545 | chunk_free++; |
| 546 | } |
| 547 | |
| 548 | if (used && last_chunksize) { |
| 549 | ocfs2_info_update_ffg(ffg, |
| 550 | last_chunksize); |
| 551 | last_chunksize = 0; |
| 552 | } |
| 553 | |
| 554 | offset++; |
| 555 | } |
| 556 | |
| 557 | if (chunk_free == ffg->iff_chunksize) |
| 558 | ffg->iff_ffs.ffs_free_chunks++; |
| 559 | } |
| 560 | |
| 561 | /* |
| 562 | * need to update the info for last free chunk. |
| 563 | */ |
| 564 | if (last_chunksize) |
| 565 | ocfs2_info_update_ffg(ffg, last_chunksize); |
| 566 | |
| 567 | } while (le64_to_cpu(bg->bg_next_group)); |
| 568 | |
| 569 | bail: |
| 570 | brelse(bh); |
| 571 | |
| 572 | return status; |
| 573 | } |
| 574 | |
| 575 | int ocfs2_info_freefrag_scan_bitmap(struct ocfs2_super *osb, |
| 576 | struct inode *gb_inode, u64 blkno, |
| 577 | struct ocfs2_info_freefrag *ffg) |
| 578 | { |
| 579 | u32 chunks_in_group; |
| 580 | int status = 0, unlock = 0, i; |
| 581 | |
| 582 | struct buffer_head *bh = NULL; |
| 583 | struct ocfs2_chain_list *cl = NULL; |
| 584 | struct ocfs2_chain_rec *rec = NULL; |
| 585 | struct ocfs2_dinode *gb_dinode = NULL; |
| 586 | |
| 587 | if (gb_inode) |
| 588 | mutex_lock(&gb_inode->i_mutex); |
| 589 | |
| 590 | if (o2info_coherent(&ffg->iff_req)) { |
| 591 | status = ocfs2_inode_lock(gb_inode, &bh, 0); |
| 592 | if (status < 0) { |
| 593 | mlog_errno(status); |
| 594 | goto bail; |
| 595 | } |
| 596 | unlock = 1; |
| 597 | } else { |
| 598 | status = ocfs2_read_blocks_sync(osb, blkno, 1, &bh); |
| 599 | if (status < 0) { |
| 600 | mlog_errno(status); |
| 601 | goto bail; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | gb_dinode = (struct ocfs2_dinode *)bh->b_data; |
| 606 | cl = &(gb_dinode->id2.i_chain); |
| 607 | |
| 608 | /* |
| 609 | * Chunksize(in) clusters from userspace should be |
| 610 | * less than clusters in a group. |
| 611 | */ |
| 612 | if (ffg->iff_chunksize > le16_to_cpu(cl->cl_cpg)) { |
| 613 | status = -EINVAL; |
| 614 | goto bail; |
| 615 | } |
| 616 | |
| 617 | memset(&ffg->iff_ffs, 0, sizeof(struct ocfs2_info_freefrag_stats)); |
| 618 | |
| 619 | ffg->iff_ffs.ffs_min = ~0U; |
| 620 | ffg->iff_ffs.ffs_clusters = |
| 621 | le32_to_cpu(gb_dinode->id1.bitmap1.i_total); |
| 622 | ffg->iff_ffs.ffs_free_clusters = ffg->iff_ffs.ffs_clusters - |
| 623 | le32_to_cpu(gb_dinode->id1.bitmap1.i_used); |
| 624 | |
| 625 | chunks_in_group = le16_to_cpu(cl->cl_cpg) / ffg->iff_chunksize + 1; |
| 626 | |
| 627 | for (i = 0; i < le16_to_cpu(cl->cl_next_free_rec); i++) { |
| 628 | rec = &(cl->cl_recs[i]); |
| 629 | status = ocfs2_info_freefrag_scan_chain(osb, gb_inode, |
| 630 | gb_dinode, |
| 631 | rec, ffg, |
| 632 | chunks_in_group); |
| 633 | if (status) |
| 634 | goto bail; |
| 635 | } |
| 636 | |
| 637 | if (ffg->iff_ffs.ffs_free_chunks_real) |
| 638 | ffg->iff_ffs.ffs_avg = (ffg->iff_ffs.ffs_avg / |
| 639 | ffg->iff_ffs.ffs_free_chunks_real); |
| 640 | bail: |
| 641 | if (unlock) |
| 642 | ocfs2_inode_unlock(gb_inode, 0); |
| 643 | |
| 644 | if (gb_inode) |
| 645 | mutex_unlock(&gb_inode->i_mutex); |
| 646 | |
| 647 | if (gb_inode) |
| 648 | iput(gb_inode); |
| 649 | |
| 650 | brelse(bh); |
| 651 | |
| 652 | return status; |
| 653 | } |
| 654 | |
| 655 | int ocfs2_info_handle_freefrag(struct inode *inode, |
| 656 | struct ocfs2_info_request __user *req) |
| 657 | { |
| 658 | u64 blkno = -1; |
| 659 | char namebuf[40]; |
| 660 | int status = -EFAULT, type = GLOBAL_BITMAP_SYSTEM_INODE; |
| 661 | |
| 662 | struct ocfs2_info_freefrag *oiff; |
| 663 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 664 | struct inode *gb_inode = NULL; |
| 665 | |
| 666 | oiff = kzalloc(sizeof(struct ocfs2_info_freefrag), GFP_KERNEL); |
| 667 | if (!oiff) { |
| 668 | status = -ENOMEM; |
| 669 | mlog_errno(status); |
Dan Carpenter | 87f0d5c | 2011-05-29 22:57:16 +0300 | [diff] [blame] | 670 | goto out_err; |
Tristan Ye | d24a10b9 | 2011-05-24 15:27:17 +0800 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | if (o2info_from_user(*oiff, req)) |
| 674 | goto bail; |
| 675 | /* |
| 676 | * chunksize from userspace should be power of 2. |
| 677 | */ |
| 678 | if ((oiff->iff_chunksize & (oiff->iff_chunksize - 1)) || |
| 679 | (!oiff->iff_chunksize)) { |
| 680 | status = -EINVAL; |
| 681 | goto bail; |
| 682 | } |
| 683 | |
| 684 | if (o2info_coherent(&oiff->iff_req)) { |
| 685 | gb_inode = ocfs2_get_system_file_inode(osb, type, |
| 686 | OCFS2_INVALID_SLOT); |
| 687 | if (!gb_inode) { |
| 688 | mlog(ML_ERROR, "unable to get global_bitmap inode\n"); |
| 689 | status = -EIO; |
| 690 | goto bail; |
| 691 | } |
| 692 | } else { |
| 693 | ocfs2_sprintf_system_inode_name(namebuf, sizeof(namebuf), type, |
| 694 | OCFS2_INVALID_SLOT); |
| 695 | status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, |
| 696 | namebuf, |
| 697 | strlen(namebuf), |
| 698 | &blkno); |
| 699 | if (status < 0) { |
| 700 | status = -ENOENT; |
| 701 | goto bail; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | status = ocfs2_info_freefrag_scan_bitmap(osb, gb_inode, blkno, oiff); |
| 706 | if (status < 0) |
| 707 | goto bail; |
| 708 | |
| 709 | o2info_set_request_filled(&oiff->iff_req); |
| 710 | |
| 711 | if (o2info_to_user(*oiff, req)) |
| 712 | goto bail; |
| 713 | |
| 714 | status = 0; |
| 715 | bail: |
| 716 | if (status) |
| 717 | o2info_set_request_error(&oiff->iff_req, req); |
| 718 | |
| 719 | kfree(oiff); |
Dan Carpenter | 87f0d5c | 2011-05-29 22:57:16 +0300 | [diff] [blame] | 720 | out_err: |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 721 | return status; |
| 722 | } |
| 723 | |
| 724 | int ocfs2_info_handle_unknown(struct inode *inode, |
| 725 | struct ocfs2_info_request __user *req) |
| 726 | { |
| 727 | int status = -EFAULT; |
| 728 | struct ocfs2_info_request oir; |
| 729 | |
| 730 | if (o2info_from_user(oir, req)) |
| 731 | goto bail; |
| 732 | |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 733 | o2info_clear_request_filled(&oir); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 734 | |
| 735 | if (o2info_to_user(oir, req)) |
| 736 | goto bail; |
| 737 | |
| 738 | status = 0; |
| 739 | bail: |
| 740 | if (status) |
Tristan Ye | 8aa1fa3 | 2011-05-24 15:22:59 +0800 | [diff] [blame] | 741 | o2info_set_request_error(&oir, req); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 742 | |
| 743 | return status; |
| 744 | } |
| 745 | |
| 746 | /* |
| 747 | * Validate and distinguish OCFS2_IOC_INFO requests. |
| 748 | * |
| 749 | * - validate the magic number. |
| 750 | * - distinguish different requests. |
| 751 | * - validate size of different requests. |
| 752 | */ |
| 753 | int ocfs2_info_handle_request(struct inode *inode, |
| 754 | struct ocfs2_info_request __user *req) |
| 755 | { |
| 756 | int status = -EFAULT; |
| 757 | struct ocfs2_info_request oir; |
| 758 | |
| 759 | if (o2info_from_user(oir, req)) |
| 760 | goto bail; |
| 761 | |
| 762 | status = -EINVAL; |
| 763 | if (oir.ir_magic != OCFS2_INFO_MAGIC) |
| 764 | goto bail; |
| 765 | |
| 766 | switch (oir.ir_code) { |
| 767 | case OCFS2_INFO_BLOCKSIZE: |
| 768 | if (oir.ir_size == sizeof(struct ocfs2_info_blocksize)) |
| 769 | status = ocfs2_info_handle_blocksize(inode, req); |
| 770 | break; |
| 771 | case OCFS2_INFO_CLUSTERSIZE: |
| 772 | if (oir.ir_size == sizeof(struct ocfs2_info_clustersize)) |
| 773 | status = ocfs2_info_handle_clustersize(inode, req); |
| 774 | break; |
| 775 | case OCFS2_INFO_MAXSLOTS: |
| 776 | if (oir.ir_size == sizeof(struct ocfs2_info_maxslots)) |
| 777 | status = ocfs2_info_handle_maxslots(inode, req); |
| 778 | break; |
| 779 | case OCFS2_INFO_LABEL: |
| 780 | if (oir.ir_size == sizeof(struct ocfs2_info_label)) |
| 781 | status = ocfs2_info_handle_label(inode, req); |
| 782 | break; |
| 783 | case OCFS2_INFO_UUID: |
| 784 | if (oir.ir_size == sizeof(struct ocfs2_info_uuid)) |
| 785 | status = ocfs2_info_handle_uuid(inode, req); |
| 786 | break; |
| 787 | case OCFS2_INFO_FS_FEATURES: |
| 788 | if (oir.ir_size == sizeof(struct ocfs2_info_fs_features)) |
| 789 | status = ocfs2_info_handle_fs_features(inode, req); |
| 790 | break; |
| 791 | case OCFS2_INFO_JOURNAL_SIZE: |
| 792 | if (oir.ir_size == sizeof(struct ocfs2_info_journal_size)) |
| 793 | status = ocfs2_info_handle_journal_size(inode, req); |
| 794 | break; |
Tristan Ye | 3e5db17 | 2011-05-24 15:25:54 +0800 | [diff] [blame] | 795 | case OCFS2_INFO_FREEINODE: |
| 796 | if (oir.ir_size == sizeof(struct ocfs2_info_freeinode)) |
| 797 | status = ocfs2_info_handle_freeinode(inode, req); |
| 798 | break; |
Tristan Ye | d24a10b9 | 2011-05-24 15:27:17 +0800 | [diff] [blame] | 799 | case OCFS2_INFO_FREEFRAG: |
| 800 | if (oir.ir_size == sizeof(struct ocfs2_info_freefrag)) |
| 801 | status = ocfs2_info_handle_freefrag(inode, req); |
| 802 | break; |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 803 | default: |
| 804 | status = ocfs2_info_handle_unknown(inode, req); |
| 805 | break; |
| 806 | } |
| 807 | |
| 808 | bail: |
| 809 | return status; |
| 810 | } |
| 811 | |
| 812 | int ocfs2_get_request_ptr(struct ocfs2_info *info, int idx, |
| 813 | u64 *req_addr, int compat_flag) |
| 814 | { |
| 815 | int status = -EFAULT; |
| 816 | u64 __user *bp = NULL; |
| 817 | |
| 818 | if (compat_flag) { |
| 819 | #ifdef CONFIG_COMPAT |
| 820 | /* |
| 821 | * pointer bp stores the base address of a pointers array, |
| 822 | * which collects all addresses of separate request. |
| 823 | */ |
| 824 | bp = (u64 __user *)(unsigned long)compat_ptr(info->oi_requests); |
| 825 | #else |
| 826 | BUG(); |
| 827 | #endif |
| 828 | } else |
| 829 | bp = (u64 __user *)(unsigned long)(info->oi_requests); |
| 830 | |
| 831 | if (o2info_from_user(*req_addr, bp + idx)) |
| 832 | goto bail; |
| 833 | |
| 834 | status = 0; |
| 835 | bail: |
| 836 | return status; |
| 837 | } |
| 838 | |
| 839 | /* |
| 840 | * OCFS2_IOC_INFO handles an array of requests passed from userspace. |
| 841 | * |
| 842 | * ocfs2_info_handle() recevies a large info aggregation, grab and |
| 843 | * validate the request count from header, then break it into small |
| 844 | * pieces, later specific handlers can handle them one by one. |
| 845 | * |
| 846 | * Idea here is to make each separate request small enough to ensure |
| 847 | * a better backward&forward compatibility, since a small piece of |
| 848 | * request will be less likely to be broken if disk layout get changed. |
| 849 | */ |
| 850 | int ocfs2_info_handle(struct inode *inode, struct ocfs2_info *info, |
| 851 | int compat_flag) |
| 852 | { |
| 853 | int i, status = 0; |
| 854 | u64 req_addr; |
| 855 | struct ocfs2_info_request __user *reqp; |
| 856 | |
| 857 | if ((info->oi_count > OCFS2_INFO_MAX_REQUEST) || |
| 858 | (!info->oi_requests)) { |
| 859 | status = -EINVAL; |
| 860 | goto bail; |
| 861 | } |
| 862 | |
| 863 | for (i = 0; i < info->oi_count; i++) { |
| 864 | |
| 865 | status = ocfs2_get_request_ptr(info, i, &req_addr, compat_flag); |
| 866 | if (status) |
| 867 | break; |
| 868 | |
| 869 | reqp = (struct ocfs2_info_request *)(unsigned long)req_addr; |
| 870 | if (!reqp) { |
| 871 | status = -EINVAL; |
| 872 | goto bail; |
| 873 | } |
| 874 | |
| 875 | status = ocfs2_info_handle_request(inode, reqp); |
| 876 | if (status) |
| 877 | break; |
| 878 | } |
| 879 | |
| 880 | bail: |
| 881 | return status; |
| 882 | } |
| 883 | |
Andi Kleen | c9ec148 | 2008-01-27 03:17:17 +0100 | [diff] [blame] | 884 | long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 885 | { |
Andi Kleen | c9ec148 | 2008-01-27 03:17:17 +0100 | [diff] [blame] | 886 | struct inode *inode = filp->f_path.dentry->d_inode; |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 887 | unsigned int flags; |
Tao Ma | d659072 | 2007-12-18 15:47:03 +0800 | [diff] [blame] | 888 | int new_clusters; |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 889 | int status; |
Mark Fasheh | b258010 | 2007-03-09 16:53:21 -0800 | [diff] [blame] | 890 | struct ocfs2_space_resv sr; |
Tao Ma | 7909f2b | 2007-12-18 15:47:25 +0800 | [diff] [blame] | 891 | struct ocfs2_new_group_input input; |
Tao Ma | bd50873 | 2009-09-21 11:25:14 +0800 | [diff] [blame] | 892 | struct reflink_arguments args; |
| 893 | const char *old_path, *new_path; |
| 894 | bool preserve; |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 895 | struct ocfs2_info info; |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 896 | |
| 897 | switch (cmd) { |
| 898 | case OCFS2_IOC_GETFLAGS: |
| 899 | status = ocfs2_get_inode_attr(inode, &flags); |
| 900 | if (status < 0) |
| 901 | return status; |
| 902 | |
| 903 | flags &= OCFS2_FL_VISIBLE; |
| 904 | return put_user(flags, (int __user *) arg); |
| 905 | case OCFS2_IOC_SETFLAGS: |
| 906 | if (get_user(flags, (int __user *) arg)) |
| 907 | return -EFAULT; |
| 908 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 909 | status = mnt_want_write_file(filp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 910 | if (status) |
| 911 | return status; |
| 912 | status = ocfs2_set_inode_attr(inode, flags, |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 913 | OCFS2_FL_MODIFIABLE); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 914 | mnt_drop_write_file(filp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 915 | return status; |
Mark Fasheh | b258010 | 2007-03-09 16:53:21 -0800 | [diff] [blame] | 916 | case OCFS2_IOC_RESVSP: |
| 917 | case OCFS2_IOC_RESVSP64: |
| 918 | case OCFS2_IOC_UNRESVSP: |
| 919 | case OCFS2_IOC_UNRESVSP64: |
| 920 | if (copy_from_user(&sr, (int __user *) arg, sizeof(sr))) |
| 921 | return -EFAULT; |
| 922 | |
| 923 | return ocfs2_change_file_space(filp, cmd, &sr); |
Tao Ma | d659072 | 2007-12-18 15:47:03 +0800 | [diff] [blame] | 924 | case OCFS2_IOC_GROUP_EXTEND: |
Mark Fasheh | 0957f00 | 2007-12-18 18:58:18 -0800 | [diff] [blame] | 925 | if (!capable(CAP_SYS_RESOURCE)) |
| 926 | return -EPERM; |
| 927 | |
Tao Ma | d659072 | 2007-12-18 15:47:03 +0800 | [diff] [blame] | 928 | if (get_user(new_clusters, (int __user *)arg)) |
| 929 | return -EFAULT; |
| 930 | |
| 931 | return ocfs2_group_extend(inode, new_clusters); |
Tao Ma | 7909f2b | 2007-12-18 15:47:25 +0800 | [diff] [blame] | 932 | case OCFS2_IOC_GROUP_ADD: |
| 933 | case OCFS2_IOC_GROUP_ADD64: |
Mark Fasheh | 0957f00 | 2007-12-18 18:58:18 -0800 | [diff] [blame] | 934 | if (!capable(CAP_SYS_RESOURCE)) |
| 935 | return -EPERM; |
| 936 | |
Tao Ma | 7909f2b | 2007-12-18 15:47:25 +0800 | [diff] [blame] | 937 | if (copy_from_user(&input, (int __user *) arg, sizeof(input))) |
| 938 | return -EFAULT; |
| 939 | |
| 940 | return ocfs2_group_add(inode, &input); |
Tao Ma | bd50873 | 2009-09-21 11:25:14 +0800 | [diff] [blame] | 941 | case OCFS2_IOC_REFLINK: |
| 942 | if (copy_from_user(&args, (struct reflink_arguments *)arg, |
| 943 | sizeof(args))) |
| 944 | return -EFAULT; |
| 945 | old_path = (const char *)(unsigned long)args.old_path; |
| 946 | new_path = (const char *)(unsigned long)args.new_path; |
| 947 | preserve = (args.preserve != 0); |
| 948 | |
| 949 | return ocfs2_reflink_ioctl(inode, old_path, new_path, preserve); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 950 | case OCFS2_IOC_INFO: |
| 951 | if (copy_from_user(&info, (struct ocfs2_info __user *)arg, |
| 952 | sizeof(struct ocfs2_info))) |
| 953 | return -EFAULT; |
| 954 | |
| 955 | return ocfs2_info_handle(inode, &info, 0); |
Tao Ma | 55e6787 | 2011-05-23 10:36:44 +0800 | [diff] [blame] | 956 | case FITRIM: |
| 957 | { |
| 958 | struct super_block *sb = inode->i_sb; |
| 959 | struct fstrim_range range; |
| 960 | int ret = 0; |
| 961 | |
| 962 | if (!capable(CAP_SYS_ADMIN)) |
| 963 | return -EPERM; |
| 964 | |
| 965 | if (copy_from_user(&range, (struct fstrim_range *)arg, |
| 966 | sizeof(range))) |
| 967 | return -EFAULT; |
| 968 | |
| 969 | ret = ocfs2_trim_fs(sb, &range); |
| 970 | if (ret < 0) |
| 971 | return ret; |
| 972 | |
| 973 | if (copy_to_user((struct fstrim_range *)arg, &range, |
| 974 | sizeof(range))) |
| 975 | return -EFAULT; |
| 976 | |
| 977 | return 0; |
| 978 | } |
Tristan Ye | 53069d4 | 2011-05-25 14:23:43 +0800 | [diff] [blame] | 979 | case OCFS2_IOC_MOVE_EXT: |
| 980 | return ocfs2_ioctl_move_extents(filp, (void __user *)arg); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 981 | default: |
| 982 | return -ENOTTY; |
| 983 | } |
| 984 | } |
| 985 | |
Mark Fasheh | 586d232 | 2007-03-09 15:56:28 -0800 | [diff] [blame] | 986 | #ifdef CONFIG_COMPAT |
| 987 | long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg) |
| 988 | { |
Tao Ma | 34e6c59 | 2010-01-27 10:21:52 +0800 | [diff] [blame] | 989 | bool preserve; |
| 990 | struct reflink_arguments args; |
| 991 | struct inode *inode = file->f_path.dentry->d_inode; |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 992 | struct ocfs2_info info; |
Tao Ma | 34e6c59 | 2010-01-27 10:21:52 +0800 | [diff] [blame] | 993 | |
Mark Fasheh | 586d232 | 2007-03-09 15:56:28 -0800 | [diff] [blame] | 994 | switch (cmd) { |
| 995 | case OCFS2_IOC32_GETFLAGS: |
| 996 | cmd = OCFS2_IOC_GETFLAGS; |
| 997 | break; |
| 998 | case OCFS2_IOC32_SETFLAGS: |
| 999 | cmd = OCFS2_IOC_SETFLAGS; |
| 1000 | break; |
Mark Fasheh | b258010 | 2007-03-09 16:53:21 -0800 | [diff] [blame] | 1001 | case OCFS2_IOC_RESVSP: |
| 1002 | case OCFS2_IOC_RESVSP64: |
| 1003 | case OCFS2_IOC_UNRESVSP: |
| 1004 | case OCFS2_IOC_UNRESVSP64: |
Tao Ma | d659072 | 2007-12-18 15:47:03 +0800 | [diff] [blame] | 1005 | case OCFS2_IOC_GROUP_EXTEND: |
Tao Ma | 7909f2b | 2007-12-18 15:47:25 +0800 | [diff] [blame] | 1006 | case OCFS2_IOC_GROUP_ADD: |
| 1007 | case OCFS2_IOC_GROUP_ADD64: |
Tao Ma | 55e6787 | 2011-05-23 10:36:44 +0800 | [diff] [blame] | 1008 | case FITRIM: |
Mark Fasheh | b258010 | 2007-03-09 16:53:21 -0800 | [diff] [blame] | 1009 | break; |
Tao Ma | 34e6c59 | 2010-01-27 10:21:52 +0800 | [diff] [blame] | 1010 | case OCFS2_IOC_REFLINK: |
| 1011 | if (copy_from_user(&args, (struct reflink_arguments *)arg, |
| 1012 | sizeof(args))) |
| 1013 | return -EFAULT; |
| 1014 | preserve = (args.preserve != 0); |
| 1015 | |
| 1016 | return ocfs2_reflink_ioctl(inode, compat_ptr(args.old_path), |
| 1017 | compat_ptr(args.new_path), preserve); |
Tristan Ye | ddee5cd | 2010-05-22 16:26:33 +0800 | [diff] [blame] | 1018 | case OCFS2_IOC_INFO: |
| 1019 | if (copy_from_user(&info, (struct ocfs2_info __user *)arg, |
| 1020 | sizeof(struct ocfs2_info))) |
| 1021 | return -EFAULT; |
| 1022 | |
| 1023 | return ocfs2_info_handle(inode, &info, 1); |
Tristan Ye | 53069d4 | 2011-05-25 14:23:43 +0800 | [diff] [blame] | 1024 | case OCFS2_IOC_MOVE_EXT: |
| 1025 | break; |
Mark Fasheh | 586d232 | 2007-03-09 15:56:28 -0800 | [diff] [blame] | 1026 | default: |
| 1027 | return -ENOIOCTLCMD; |
| 1028 | } |
| 1029 | |
Andi Kleen | c9ec148 | 2008-01-27 03:17:17 +0100 | [diff] [blame] | 1030 | return ocfs2_ioctl(file, cmd, arg); |
Mark Fasheh | 586d232 | 2007-03-09 15:56:28 -0800 | [diff] [blame] | 1031 | } |
| 1032 | #endif |