fs/cifs/smb2inode.c

   1 /*
   2  *   fs/cifs/smb2inode.c
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2002, 2011
   5  *                 Etersoft, 2012
   6  *   Author(s): Pavel Shilovsky (pshilovsky@samba.org),
   7  *              Steve French (sfrench@us.ibm.com)
   8  *
   9  *   This library is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU Lesser General Public License as published
  11  *   by the Free Software Foundation; either version 2.1 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This library is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  *   the GNU Lesser General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU Lesser General Public License
  20  *   along with this library; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  */
  23 #include <linux/fs.h>
  24 #include <linux/stat.h>
  25 #include <linux/slab.h>
  26 #include <linux/pagemap.h>
  27 #include <asm/div64.h>
  28 #include "cifsfs.h"
  29 #include "cifspdu.h"
  30 #include "cifsglob.h"
  31 #include "cifsproto.h"
  32 #include "cifs_debug.h"
  33 #include "cifs_fs_sb.h"
  34 #include "cifs_unicode.h"
  35 #include "fscache.h"
  36 #include "smb2glob.h"
  37 #include "smb2pdu.h"
  38 #include "smb2proto.h"
  39
  40 static void
  41 free_set_inf_compound(struct smb_rqst *rqst)
  42 {
  43         if (rqst[1].rq_iov)
  44                 SMB2_set_info_free(&rqst[1]);
  45         if (rqst[2].rq_iov)
  46                 SMB2_close_free(&rqst[2]);
  47 }
  48
  49
  50 struct cop_vars {
  51         struct cifs_open_parms oparms;
  52         struct kvec rsp_iov[3];
  53         struct smb_rqst rqst[3];
  54         struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
  55         struct kvec qi_iov[1];
  56         struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
  57         struct kvec close_iov[1];
  58         struct smb2_file_rename_info rename_info;
  59         struct smb2_file_link_info link_info;
  60 };
  61
  62 static int
  63 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
  64                  struct cifs_sb_info *cifs_sb, const char *full_path,
  65                  __u32 desired_access, __u32 create_disposition,
  66                  __u32 create_options, umode_t mode, void *ptr, int command,
  67                  struct cifsFileInfo *cfile)
  68 {
  69         struct cop_vars *vars = NULL;
  70         struct kvec *rsp_iov;
  71         struct smb_rqst *rqst;
  72         int rc;
  73         __le16 *utf16_path = NULL;
  74         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
  75         struct cifs_fid fid;
  76         struct cifs_ses *ses = tcon->ses;
  77         struct TCP_Server_Info *server;
  78         int num_rqst = 0;
  79         int resp_buftype[3];
  80         struct smb2_query_info_rsp *qi_rsp = NULL;
  81         int flags = 0;
  82         __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
  83         unsigned int size[2];
  84         void *data[2];
  85         int len;
  86
  87         vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
  88         if (vars == NULL)
  89                 return -ENOMEM;
  90         rqst = &vars->rqst[0];
  91         rsp_iov = &vars->rsp_iov[0];
  92
  93         server = cifs_pick_channel(ses);
  94
  95         if (smb3_encryption_required(tcon))
  96                 flags |= CIFS_TRANSFORM_REQ;
  97
  98         resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
  99
 100         /* We already have a handle so we can skip the open */
 101         if (cfile)
 102                 goto after_open;
 103
 104         /* Open */
 105         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 106         if (!utf16_path) {
 107                 rc = -ENOMEM;
 108                 goto finished;
 109         }
 110
 111         vars->oparms.tcon = tcon;
 112         vars->oparms.desired_access = desired_access;
 113         vars->oparms.disposition = create_disposition;
 114         vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
 115         vars->oparms.fid = &fid;
 116         vars->oparms.reconnect = false;
 117         vars->oparms.mode = mode;
 118
 119         rqst[num_rqst].rq_iov = &vars->open_iov[0];
 120         rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
 121         rc = SMB2_open_init(tcon, server,
 122                             &rqst[num_rqst], &oplock, &vars->oparms,
 123                             utf16_path);
 124         kfree(utf16_path);
 125         if (rc)
 126                 goto finished;
 127
 128         smb2_set_next_command(tcon, &rqst[num_rqst]);
 129  after_open:
 130         num_rqst++;
 131         rc = 0;
 132
 133         /* Operation */
 134         switch (command) {
 135         case SMB2_OP_QUERY_INFO:
 136                 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
 137                 rqst[num_rqst].rq_nvec = 1;
 138
 139                 if (cfile)
 140                         rc = SMB2_query_info_init(tcon, server,
 141                                 &rqst[num_rqst],
 142                                 cfile->fid.persistent_fid,
 143                                 cfile->fid.volatile_fid,
 144                                 FILE_ALL_INFORMATION,
 145                                 SMB2_O_INFO_FILE, 0,
 146                                 sizeof(struct smb2_file_all_info) +
 147                                           PATH_MAX * 2, 0, NULL);
 148                 else {
 149                         rc = SMB2_query_info_init(tcon, server,
 150                                 &rqst[num_rqst],
 151                                 COMPOUND_FID,
 152                                 COMPOUND_FID,
 153                                 FILE_ALL_INFORMATION,
 154                                 SMB2_O_INFO_FILE, 0,
 155                                 sizeof(struct smb2_file_all_info) +
 156                                           PATH_MAX * 2, 0, NULL);
 157                         if (!rc) {
 158                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 159                                 smb2_set_related(&rqst[num_rqst]);
 160                         }
 161                 }
 162
 163                 if (rc)
 164                         goto finished;
 165                 num_rqst++;
 166                 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
 167                                                      full_path);
 168                 break;
 169         case SMB2_OP_POSIX_QUERY_INFO:
 170                 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
 171                 rqst[num_rqst].rq_nvec = 1;
 172
 173                 if (cfile)
 174                         rc = SMB2_query_info_init(tcon, server,
 175                                 &rqst[num_rqst],
 176                                 cfile->fid.persistent_fid,
 177                                 cfile->fid.volatile_fid,
 178                                 SMB_FIND_FILE_POSIX_INFO,
 179                                 SMB2_O_INFO_FILE, 0,
 180                                 /* TBD: fix following to allow for longer SIDs */
 181                                 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
 182                                 (sizeof(struct cifs_sid) * 2), 0, NULL);
 183                 else {
 184                         rc = SMB2_query_info_init(tcon, server,
 185                                 &rqst[num_rqst],
 186                                 COMPOUND_FID,
 187                                 COMPOUND_FID,
 188                                 SMB_FIND_FILE_POSIX_INFO,
 189                                 SMB2_O_INFO_FILE, 0,
 190                                 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
 191                                 (sizeof(struct cifs_sid) * 2), 0, NULL);
 192                         if (!rc) {
 193                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 194                                 smb2_set_related(&rqst[num_rqst]);
 195                         }
 196                 }
 197
 198                 if (rc)
 199                         goto finished;
 200                 num_rqst++;
 201                 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
 202                 break;
 203         case SMB2_OP_DELETE:
 204                 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
 205                 break;
 206         case SMB2_OP_MKDIR:
 207                 /*
 208                  * Directories are created through parameters in the
 209                  * SMB2_open() call.
 210                  */
 211                 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
 212                 break;
 213         case SMB2_OP_RMDIR:
 214                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 215                 rqst[num_rqst].rq_nvec = 1;
 216
 217                 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
 218                 data[0] = &delete_pending[0];
 219
 220                 rc = SMB2_set_info_init(tcon, server,
 221                                         &rqst[num_rqst], COMPOUND_FID,
 222                                         COMPOUND_FID, current->tgid,
 223                                         FILE_DISPOSITION_INFORMATION,
 224                                         SMB2_O_INFO_FILE, 0, data, size);
 225                 if (rc)
 226                         goto finished;
 227                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 228                 smb2_set_related(&rqst[num_rqst++]);
 229                 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
 230                 break;
 231         case SMB2_OP_SET_EOF:
 232                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 233                 rqst[num_rqst].rq_nvec = 1;
 234
 235                 size[0] = 8; /* sizeof __le64 */
 236                 data[0] = ptr;
 237
 238                 rc = SMB2_set_info_init(tcon, server,
 239                                         &rqst[num_rqst], COMPOUND_FID,
 240                                         COMPOUND_FID, current->tgid,
 241                                         FILE_END_OF_FILE_INFORMATION,
 242                                         SMB2_O_INFO_FILE, 0, data, size);
 243                 if (rc)
 244                         goto finished;
 245                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 246                 smb2_set_related(&rqst[num_rqst++]);
 247                 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
 248                 break;
 249         case SMB2_OP_SET_INFO:
 250                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 251                 rqst[num_rqst].rq_nvec = 1;
 252
 253
 254                 size[0] = sizeof(FILE_BASIC_INFO);
 255                 data[0] = ptr;
 256
 257                 if (cfile)
 258                         rc = SMB2_set_info_init(tcon, server,
 259                                 &rqst[num_rqst],
 260                                 cfile->fid.persistent_fid,
 261                                 cfile->fid.volatile_fid, current->tgid,
 262                                 FILE_BASIC_INFORMATION,
 263                                 SMB2_O_INFO_FILE, 0, data, size);
 264                 else {
 265                         rc = SMB2_set_info_init(tcon, server,
 266                                 &rqst[num_rqst],
 267                                 COMPOUND_FID,
 268                                 COMPOUND_FID, current->tgid,
 269                                 FILE_BASIC_INFORMATION,
 270                                 SMB2_O_INFO_FILE, 0, data, size);
 271                         if (!rc) {
 272                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 273                                 smb2_set_related(&rqst[num_rqst]);
 274                         }
 275                 }
 276
 277                 if (rc)
 278                         goto finished;
 279                 num_rqst++;
 280                 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
 281                                                    full_path);
 282                 break;
 283         case SMB2_OP_RENAME:
 284                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 285                 rqst[num_rqst].rq_nvec = 2;
 286
 287                 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
 288
 289                 vars->rename_info.ReplaceIfExists = 1;
 290                 vars->rename_info.RootDirectory = 0;
 291                 vars->rename_info.FileNameLength = cpu_to_le32(len);
 292
 293                 size[0] = sizeof(struct smb2_file_rename_info);
 294                 data[0] = &vars->rename_info;
 295
 296                 size[1] = len + 2 /* null */;
 297                 data[1] = (__le16 *)ptr;
 298
 299                 if (cfile)
 300                         rc = SMB2_set_info_init(tcon, server,
 301                                                 &rqst[num_rqst],
 302                                                 cfile->fid.persistent_fid,
 303                                                 cfile->fid.volatile_fid,
 304                                         current->tgid, FILE_RENAME_INFORMATION,
 305                                         SMB2_O_INFO_FILE, 0, data, size);
 306                 else {
 307                         rc = SMB2_set_info_init(tcon, server,
 308                                         &rqst[num_rqst],
 309                                         COMPOUND_FID, COMPOUND_FID,
 310                                         current->tgid, FILE_RENAME_INFORMATION,
 311                                         SMB2_O_INFO_FILE, 0, data, size);
 312                         if (!rc) {
 313                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 314                                 smb2_set_related(&rqst[num_rqst]);
 315                         }
 316                 }
 317                 if (rc)
 318                         goto finished;
 319                 num_rqst++;
 320                 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
 321                 break;
 322         case SMB2_OP_HARDLINK:
 323                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 324                 rqst[num_rqst].rq_nvec = 2;
 325
 326                 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
 327
 328                 vars->link_info.ReplaceIfExists = 0;
 329                 vars->link_info.RootDirectory = 0;
 330                 vars->link_info.FileNameLength = cpu_to_le32(len);
 331
 332                 size[0] = sizeof(struct smb2_file_link_info);
 333                 data[0] = &vars->link_info;
 334
 335                 size[1] = len + 2 /* null */;
 336                 data[1] = (__le16 *)ptr;
 337
 338                 rc = SMB2_set_info_init(tcon, server,
 339                                         &rqst[num_rqst], COMPOUND_FID,
 340                                         COMPOUND_FID, current->tgid,
 341                                         FILE_LINK_INFORMATION,
 342                                         SMB2_O_INFO_FILE, 0, data, size);
 343                 if (rc)
 344                         goto finished;
 345                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 346                 smb2_set_related(&rqst[num_rqst++]);
 347                 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
 348                 break;
 349         default:
 350                 cifs_dbg(VFS, "Invalid command\n");
 351                 rc = -EINVAL;
 352         }
 353         if (rc)
 354                 goto finished;
 355
 356         /* We already have a handle so we can skip the close */
 357         if (cfile)
 358                 goto after_close;
 359         /* Close */
 360         rqst[num_rqst].rq_iov = &vars->close_iov[0];
 361         rqst[num_rqst].rq_nvec = 1;
 362         rc = SMB2_close_init(tcon, server,
 363                              &rqst[num_rqst], COMPOUND_FID,
 364                              COMPOUND_FID, false);
 365         smb2_set_related(&rqst[num_rqst]);
 366         if (rc)
 367                 goto finished;
 368  after_close:
 369         num_rqst++;
 370
 371         if (cfile) {
 372                 cifsFileInfo_put(cfile);
 373                 cfile = NULL;
 374                 rc = compound_send_recv(xid, ses, server,
 375                                         flags, num_rqst - 2,
 376                                         &rqst[1], &resp_buftype[1],
 377                                         &rsp_iov[1]);
 378         } else
 379                 rc = compound_send_recv(xid, ses, server,
 380                                         flags, num_rqst,
 381                                         rqst, resp_buftype,
 382                                         rsp_iov);
 383
 384  finished:
 385         if (cfile)
 386                 cifsFileInfo_put(cfile);
 387
 388         SMB2_open_free(&rqst[0]);
 389         if (rc == -EREMCHG) {
 390                 pr_warn_once("server share %s deleted\n", tcon->treeName);
 391                 tcon->need_reconnect = true;
 392         }
 393
 394         switch (command) {
 395         case SMB2_OP_QUERY_INFO:
 396                 if (rc == 0) {
 397                         qi_rsp = (struct smb2_query_info_rsp *)
 398                                 rsp_iov[1].iov_base;
 399                         rc = smb2_validate_and_copy_iov(
 400                                 le16_to_cpu(qi_rsp->OutputBufferOffset),
 401                                 le32_to_cpu(qi_rsp->OutputBufferLength),
 402                                 &rsp_iov[1], sizeof(struct smb2_file_all_info),
 403                                 ptr);
 404                 }
 405                 if (rqst[1].rq_iov)
 406                         SMB2_query_info_free(&rqst[1]);
 407                 if (rqst[2].rq_iov)
 408                         SMB2_close_free(&rqst[2]);
 409                 if (rc)
 410                         trace_smb3_query_info_compound_err(xid,  ses->Suid,
 411                                                 tcon->tid, rc);
 412                 else
 413                         trace_smb3_query_info_compound_done(xid, ses->Suid,
 414                                                 tcon->tid);
 415                 break;
 416         case SMB2_OP_POSIX_QUERY_INFO:
 417                 if (rc == 0) {
 418                         qi_rsp = (struct smb2_query_info_rsp *)
 419                                 rsp_iov[1].iov_base;
 420                         rc = smb2_validate_and_copy_iov(
 421                                 le16_to_cpu(qi_rsp->OutputBufferOffset),
 422                                 le32_to_cpu(qi_rsp->OutputBufferLength),
 423                                 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
 424                 }
 425                 if (rqst[1].rq_iov)
 426                         SMB2_query_info_free(&rqst[1]);
 427                 if (rqst[2].rq_iov)
 428                         SMB2_close_free(&rqst[2]);
 429                 if (rc)
 430                         trace_smb3_posix_query_info_compound_err(xid,  ses->Suid, tcon->tid, rc);
 431                 else
 432                         trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
 433                 break;
 434         case SMB2_OP_DELETE:
 435                 if (rc)
 436                         trace_smb3_delete_err(xid,  ses->Suid, tcon->tid, rc);
 437                 else
 438                         trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
 439                 if (rqst[1].rq_iov)
 440                         SMB2_close_free(&rqst[1]);
 441                 break;
 442         case SMB2_OP_MKDIR:
 443                 if (rc)
 444                         trace_smb3_mkdir_err(xid,  ses->Suid, tcon->tid, rc);
 445                 else
 446                         trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
 447                 if (rqst[1].rq_iov)
 448                         SMB2_close_free(&rqst[1]);
 449                 break;
 450         case SMB2_OP_HARDLINK:
 451                 if (rc)
 452                         trace_smb3_hardlink_err(xid,  ses->Suid, tcon->tid, rc);
 453                 else
 454                         trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
 455                 free_set_inf_compound(rqst);
 456                 break;
 457         case SMB2_OP_RENAME:
 458                 if (rc)
 459                         trace_smb3_rename_err(xid,  ses->Suid, tcon->tid, rc);
 460                 else
 461                         trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
 462                 free_set_inf_compound(rqst);
 463                 break;
 464         case SMB2_OP_RMDIR:
 465                 if (rc)
 466                         trace_smb3_rmdir_err(xid,  ses->Suid, tcon->tid, rc);
 467                 else
 468                         trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
 469                 free_set_inf_compound(rqst);
 470                 break;
 471         case SMB2_OP_SET_EOF:
 472                 if (rc)
 473                         trace_smb3_set_eof_err(xid,  ses->Suid, tcon->tid, rc);
 474                 else
 475                         trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
 476                 free_set_inf_compound(rqst);
 477                 break;
 478         case SMB2_OP_SET_INFO:
 479                 if (rc)
 480                         trace_smb3_set_info_compound_err(xid,  ses->Suid,
 481                                                 tcon->tid, rc);
 482                 else
 483                         trace_smb3_set_info_compound_done(xid, ses->Suid,
 484                                                 tcon->tid);
 485                 free_set_inf_compound(rqst);
 486                 break;
 487         }
 488         free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
 489         free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
 490         free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
 491         kfree(vars);
 492         return rc;
 493 }
 494
 495 void
 496 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
 497 {
 498         memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
 499         dst->CurrentByteOffset = src->CurrentByteOffset;
 500         dst->Mode = src->Mode;
 501         dst->AlignmentRequirement = src->AlignmentRequirement;
 502         dst->IndexNumber1 = 0; /* we don't use it */
 503 }
 504
 505 int
 506 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 507                      struct cifs_sb_info *cifs_sb, const char *full_path,
 508                      FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
 509 {
 510         int rc;
 511         struct smb2_file_all_info *smb2_data;
 512         __u32 create_options = 0;
 513         struct cifs_fid fid;
 514         bool no_cached_open = tcon->nohandlecache;
 515         struct cifsFileInfo *cfile;
 516
 517         *adjust_tz = false;
 518         *symlink = false;
 519
 520         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
 521                             GFP_KERNEL);
 522         if (smb2_data == NULL)
 523                 return -ENOMEM;
 524
 525         /* If it is a root and its handle is cached then use it */
 526         if (!strlen(full_path) && !no_cached_open) {
 527                 rc = open_shroot(xid, tcon, cifs_sb, &fid);
 528                 if (rc)
 529                         goto out;
 530
 531                 if (tcon->crfid.file_all_info_is_valid) {
 532                         move_smb2_info_to_cifs(data,
 533                                                &tcon->crfid.file_all_info);
 534                 } else {
 535                         rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
 536                                              fid.volatile_fid, smb2_data);
 537                         if (!rc)
 538                                 move_smb2_info_to_cifs(data, smb2_data);
 539                 }
 540                 close_shroot(&tcon->crfid);
 541                 goto out;
 542         }
 543
 544         cifs_get_readable_path(tcon, full_path, &cfile);
 545         rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 546                               FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
 547                               ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
 548         if (rc == -EOPNOTSUPP) {
 549                 *symlink = true;
 550                 create_options |= OPEN_REPARSE_POINT;
 551
 552                 /* Failed on a symbolic link - query a reparse point info */
 553                 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 554                                       FILE_READ_ATTRIBUTES, FILE_OPEN,
 555                                       create_options, ACL_NO_MODE,
 556                                       smb2_data, SMB2_OP_QUERY_INFO, NULL);
 557         }
 558         if (rc)
 559                 goto out;
 560
 561         move_smb2_info_to_cifs(data, smb2_data);
 562 out:
 563         kfree(smb2_data);
 564         return rc;
 565 }
 566
 567
 568 int
 569 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 570                      struct cifs_sb_info *cifs_sb, const char *full_path,
 571                      struct smb311_posix_qinfo *data, bool *adjust_tz, bool *symlink)
 572 {
 573         int rc;
 574         __u32 create_options = 0;
 575         struct cifsFileInfo *cfile;
 576         struct smb311_posix_qinfo *smb2_data;
 577
 578         *adjust_tz = false;
 579         *symlink = false;
 580
 581         /* BB TODO: Make struct larger when add support for parsing owner SIDs */
 582         smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
 583                             GFP_KERNEL);
 584         if (smb2_data == NULL)
 585                 return -ENOMEM;
 586
 587         /*
 588          * BB TODO: Add support for using the cached root handle.
 589          * Create SMB2_query_posix_info worker function to do non-compounded query
 590          * when we already have an open file handle for this. For now this is fast enough
 591          * (always using the compounded version).
 592          */
 593
 594         cifs_get_readable_path(tcon, full_path, &cfile);
 595         rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 596                               FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
 597                               ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
 598         if (rc == -EOPNOTSUPP) {
 599                 /* BB TODO: When support for special files added to Samba re-verify this path */
 600                 *symlink = true;
 601                 create_options |= OPEN_REPARSE_POINT;
 602
 603                 /* Failed on a symbolic link - query a reparse point info */
 604                 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 605                                       FILE_READ_ATTRIBUTES, FILE_OPEN,
 606                                       create_options, ACL_NO_MODE,
 607                                       smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
 608         }
 609         if (rc)
 610                 goto out;
 611
 612          /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
 613         memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
 614
 615 out:
 616         kfree(smb2_data);
 617         return rc;
 618 }
 619
 620 int
 621 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
 622            struct cifs_tcon *tcon, const char *name,
 623            struct cifs_sb_info *cifs_sb)
 624 {
 625         return smb2_compound_op(xid, tcon, cifs_sb, name,
 626                                 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
 627                                 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
 628                                 NULL);
 629 }
 630
 631 void
 632 smb2_mkdir_setinfo(struct inode *inode, const char *name,
 633                    struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
 634                    const unsigned int xid)
 635 {
 636         FILE_BASIC_INFO data;
 637         struct cifsInodeInfo *cifs_i;
 638         struct cifsFileInfo *cfile;
 639         u32 dosattrs;
 640         int tmprc;
 641
 642         memset(&data, 0, sizeof(data));
 643         cifs_i = CIFS_I(inode);
 644         dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
 645         data.Attributes = cpu_to_le32(dosattrs);
 646         cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
 647         tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
 648                                  FILE_WRITE_ATTRIBUTES, FILE_CREATE,
 649                                  CREATE_NOT_FILE, ACL_NO_MODE,
 650                                  &data, SMB2_OP_SET_INFO, cfile);
 651         if (tmprc == 0)
 652                 cifs_i->cifsAttrs = dosattrs;
 653 }
 654
 655 int
 656 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
 657            struct cifs_sb_info *cifs_sb)
 658 {
 659         return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
 660                                 CREATE_NOT_FILE, ACL_NO_MODE,
 661                                 NULL, SMB2_OP_RMDIR, NULL);
 662 }
 663
 664 int
 665 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
 666             struct cifs_sb_info *cifs_sb)
 667 {
 668         return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
 669                                 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
 670                                 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
 671 }
 672
 673 static int
 674 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
 675                    const char *from_name, const char *to_name,
 676                    struct cifs_sb_info *cifs_sb, __u32 access, int command,
 677                    struct cifsFileInfo *cfile)
 678 {
 679         __le16 *smb2_to_name = NULL;
 680         int rc;
 681
 682         smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
 683         if (smb2_to_name == NULL) {
 684                 rc = -ENOMEM;
 685                 goto smb2_rename_path;
 686         }
 687         rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
 688                               FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
 689                               command, cfile);
 690 smb2_rename_path:
 691         kfree(smb2_to_name);
 692         return rc;
 693 }
 694
 695 int
 696 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
 697                  const char *from_name, const char *to_name,
 698                  struct cifs_sb_info *cifs_sb)
 699 {
 700         struct cifsFileInfo *cfile;
 701
 702         cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
 703
 704         return smb2_set_path_attr(xid, tcon, from_name, to_name,
 705                                   cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
 706 }
 707
 708 int
 709 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
 710                      const char *from_name, const char *to_name,
 711                      struct cifs_sb_info *cifs_sb)
 712 {
 713         return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
 714                                   FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
 715                                   NULL);
 716 }
 717
 718 int
 719 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
 720                    const char *full_path, __u64 size,
 721                    struct cifs_sb_info *cifs_sb, bool set_alloc)
 722 {
 723         __le64 eof = cpu_to_le64(size);
 724
 725         return smb2_compound_op(xid, tcon, cifs_sb, full_path,
 726                                 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
 727                                 &eof, SMB2_OP_SET_EOF, NULL);
 728 }
 729
 730 int
 731 smb2_set_file_info(struct inode *inode, const char *full_path,
 732                    FILE_BASIC_INFO *buf, const unsigned int xid)
 733 {
 734         struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 735         struct tcon_link *tlink;
 736         int rc;
 737
 738         if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
 739             (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
 740             (buf->Attributes == 0))
 741                 return 0; /* would be a no op, no sense sending this */
 742
 743         tlink = cifs_sb_tlink(cifs_sb);
 744         if (IS_ERR(tlink))
 745                 return PTR_ERR(tlink);
 746
 747         rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
 748                               FILE_WRITE_ATTRIBUTES, FILE_OPEN,
 749                               0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
 750         cifs_put_tlink(tlink);
 751         return rc;
 752 }