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 ([email protected]),
   7  *              Steve French ([email protected])
   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         vars->oparms.cifs_sb = cifs_sb;
 119
 120         rqst[num_rqst].rq_iov = &vars->open_iov[0];
 121         rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
 122         rc = SMB2_open_init(tcon, server,
 123                             &rqst[num_rqst], &oplock, &vars->oparms,
 124                             utf16_path);
 125         kfree(utf16_path);
 126         if (rc)
 127                 goto finished;
 128
 129         smb2_set_next_command(tcon, &rqst[num_rqst]);
 130  after_open:
 131         num_rqst++;
 132         rc = 0;
 133
 134         /* Operation */
 135         switch (command) {
 136         case SMB2_OP_QUERY_INFO:
 137                 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
 138                 rqst[num_rqst].rq_nvec = 1;
 139
 140                 if (cfile)
 141                         rc = SMB2_query_info_init(tcon, server,
 142                                 &rqst[num_rqst],
 143                                 cfile->fid.persistent_fid,
 144                                 cfile->fid.volatile_fid,
 145                                 FILE_ALL_INFORMATION,
 146                                 SMB2_O_INFO_FILE, 0,
 147                                 sizeof(struct smb2_file_all_info) +
 148                                           PATH_MAX * 2, 0, NULL);
 149                 else {
 150                         rc = SMB2_query_info_init(tcon, server,
 151                                 &rqst[num_rqst],
 152                                 COMPOUND_FID,
 153                                 COMPOUND_FID,
 154                                 FILE_ALL_INFORMATION,
 155                                 SMB2_O_INFO_FILE, 0,
 156                                 sizeof(struct smb2_file_all_info) +
 157                                           PATH_MAX * 2, 0, NULL);
 158                         if (!rc) {
 159                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 160                                 smb2_set_related(&rqst[num_rqst]);
 161                         }
 162                 }
 163
 164                 if (rc)
 165                         goto finished;
 166                 num_rqst++;
 167                 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
 168                                                      full_path);
 169                 break;
 170         case SMB2_OP_POSIX_QUERY_INFO:
 171                 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
 172                 rqst[num_rqst].rq_nvec = 1;
 173
 174                 if (cfile)
 175                         rc = SMB2_query_info_init(tcon, server,
 176                                 &rqst[num_rqst],
 177                                 cfile->fid.persistent_fid,
 178                                 cfile->fid.volatile_fid,
 179                                 SMB_FIND_FILE_POSIX_INFO,
 180                                 SMB2_O_INFO_FILE, 0,
 181                                 /* TBD: fix following to allow for longer SIDs */
 182                                 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
 183                                 (sizeof(struct cifs_sid) * 2), 0, NULL);
 184                 else {
 185                         rc = SMB2_query_info_init(tcon, server,
 186                                 &rqst[num_rqst],
 187                                 COMPOUND_FID,
 188                                 COMPOUND_FID,
 189                                 SMB_FIND_FILE_POSIX_INFO,
 190                                 SMB2_O_INFO_FILE, 0,
 191                                 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
 192                                 (sizeof(struct cifs_sid) * 2), 0, NULL);
 193                         if (!rc) {
 194                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 195                                 smb2_set_related(&rqst[num_rqst]);
 196                         }
 197                 }
 198
 199                 if (rc)
 200                         goto finished;
 201                 num_rqst++;
 202                 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
 203                 break;
 204         case SMB2_OP_DELETE:
 205                 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
 206                 break;
 207         case SMB2_OP_MKDIR:
 208                 /*
 209                  * Directories are created through parameters in the
 210                  * SMB2_open() call.
 211                  */
 212                 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
 213                 break;
 214         case SMB2_OP_RMDIR:
 215                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 216                 rqst[num_rqst].rq_nvec = 1;
 217
 218                 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
 219                 data[0] = &delete_pending[0];
 220
 221                 rc = SMB2_set_info_init(tcon, server,
 222                                         &rqst[num_rqst], COMPOUND_FID,
 223                                         COMPOUND_FID, current->tgid,
 224                                         FILE_DISPOSITION_INFORMATION,
 225                                         SMB2_O_INFO_FILE, 0, data, size);
 226                 if (rc)
 227                         goto finished;
 228                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 229                 smb2_set_related(&rqst[num_rqst++]);
 230                 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
 231                 break;
 232         case SMB2_OP_SET_EOF:
 233                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 234                 rqst[num_rqst].rq_nvec = 1;
 235
 236                 size[0] = 8; /* sizeof __le64 */
 237                 data[0] = ptr;
 238
 239                 rc = SMB2_set_info_init(tcon, server,
 240                                         &rqst[num_rqst], COMPOUND_FID,
 241                                         COMPOUND_FID, current->tgid,
 242                                         FILE_END_OF_FILE_INFORMATION,
 243                                         SMB2_O_INFO_FILE, 0, data, size);
 244                 if (rc)
 245                         goto finished;
 246                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 247                 smb2_set_related(&rqst[num_rqst++]);
 248                 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
 249                 break;
 250         case SMB2_OP_SET_INFO:
 251                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 252                 rqst[num_rqst].rq_nvec = 1;
 253
 254
 255                 size[0] = sizeof(FILE_BASIC_INFO);
 256                 data[0] = ptr;
 257
 258                 if (cfile)
 259                         rc = SMB2_set_info_init(tcon, server,
 260                                 &rqst[num_rqst],
 261                                 cfile->fid.persistent_fid,
 262                                 cfile->fid.volatile_fid, current->tgid,
 263                                 FILE_BASIC_INFORMATION,
 264                                 SMB2_O_INFO_FILE, 0, data, size);
 265                 else {
 266                         rc = SMB2_set_info_init(tcon, server,
 267                                 &rqst[num_rqst],
 268                                 COMPOUND_FID,
 269                                 COMPOUND_FID, current->tgid,
 270                                 FILE_BASIC_INFORMATION,
 271                                 SMB2_O_INFO_FILE, 0, data, size);
 272                         if (!rc) {
 273                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 274                                 smb2_set_related(&rqst[num_rqst]);
 275                         }
 276                 }
 277
 278                 if (rc)
 279                         goto finished;
 280                 num_rqst++;
 281                 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
 282                                                    full_path);
 283                 break;
 284         case SMB2_OP_RENAME:
 285                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 286                 rqst[num_rqst].rq_nvec = 2;
 287
 288                 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
 289
 290                 vars->rename_info.ReplaceIfExists = 1;
 291                 vars->rename_info.RootDirectory = 0;
 292                 vars->rename_info.FileNameLength = cpu_to_le32(len);
 293
 294                 size[0] = sizeof(struct smb2_file_rename_info);
 295                 data[0] = &vars->rename_info;
 296
 297                 size[1] = len + 2 /* null */;
 298                 data[1] = (__le16 *)ptr;
 299
 300                 if (cfile)
 301                         rc = SMB2_set_info_init(tcon, server,
 302                                                 &rqst[num_rqst],
 303                                                 cfile->fid.persistent_fid,
 304                                                 cfile->fid.volatile_fid,
 305                                         current->tgid, FILE_RENAME_INFORMATION,
 306                                         SMB2_O_INFO_FILE, 0, data, size);
 307                 else {
 308                         rc = SMB2_set_info_init(tcon, server,
 309                                         &rqst[num_rqst],
 310                                         COMPOUND_FID, COMPOUND_FID,
 311                                         current->tgid, FILE_RENAME_INFORMATION,
 312                                         SMB2_O_INFO_FILE, 0, data, size);
 313                         if (!rc) {
 314                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 315                                 smb2_set_related(&rqst[num_rqst]);
 316                         }
 317                 }
 318                 if (rc)
 319                         goto finished;
 320                 num_rqst++;
 321                 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
 322                 break;
 323         case SMB2_OP_HARDLINK:
 324                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 325                 rqst[num_rqst].rq_nvec = 2;
 326
 327                 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
 328
 329                 vars->link_info.ReplaceIfExists = 0;
 330                 vars->link_info.RootDirectory = 0;
 331                 vars->link_info.FileNameLength = cpu_to_le32(len);
 332
 333                 size[0] = sizeof(struct smb2_file_link_info);
 334                 data[0] = &vars->link_info;
 335
 336                 size[1] = len + 2 /* null */;
 337                 data[1] = (__le16 *)ptr;
 338
 339                 rc = SMB2_set_info_init(tcon, server,
 340                                         &rqst[num_rqst], COMPOUND_FID,
 341                                         COMPOUND_FID, current->tgid,
 342                                         FILE_LINK_INFORMATION,
 343                                         SMB2_O_INFO_FILE, 0, data, size);
 344                 if (rc)
 345                         goto finished;
 346                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 347                 smb2_set_related(&rqst[num_rqst++]);
 348                 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
 349                 break;
 350         default:
 351                 cifs_dbg(VFS, "Invalid command\n");
 352                 rc = -EINVAL;
 353         }
 354         if (rc)
 355                 goto finished;
 356
 357         /* We already have a handle so we can skip the close */
 358         if (cfile)
 359                 goto after_close;
 360         /* Close */
 361         rqst[num_rqst].rq_iov = &vars->close_iov[0];
 362         rqst[num_rqst].rq_nvec = 1;
 363         rc = SMB2_close_init(tcon, server,
 364                              &rqst[num_rqst], COMPOUND_FID,
 365                              COMPOUND_FID, false);
 366         smb2_set_related(&rqst[num_rqst]);
 367         if (rc)
 368                 goto finished;
 369  after_close:
 370         num_rqst++;
 371
 372         if (cfile) {
 373                 cifsFileInfo_put(cfile);
 374                 cfile = NULL;
 375                 rc = compound_send_recv(xid, ses, server,
 376                                         flags, num_rqst - 2,
 377                                         &rqst[1], &resp_buftype[1],
 378                                         &rsp_iov[1]);
 379         } else
 380                 rc = compound_send_recv(xid, ses, server,
 381                                         flags, num_rqst,
 382                                         rqst, resp_buftype,
 383                                         rsp_iov);
 384
 385  finished:
 386         if (cfile)
 387                 cifsFileInfo_put(cfile);
 388
 389         SMB2_open_free(&rqst[0]);
 390         if (rc == -EREMCHG) {
 391                 pr_warn_once("server share %s deleted\n", tcon->treeName);
 392                 tcon->need_reconnect = true;
 393         }
 394
 395         switch (command) {
 396         case SMB2_OP_QUERY_INFO:
 397                 if (rc == 0) {
 398                         qi_rsp = (struct smb2_query_info_rsp *)
 399                                 rsp_iov[1].iov_base;
 400                         rc = smb2_validate_and_copy_iov(
 401                                 le16_to_cpu(qi_rsp->OutputBufferOffset),
 402                                 le32_to_cpu(qi_rsp->OutputBufferLength),
 403                                 &rsp_iov[1], sizeof(struct smb2_file_all_info),
 404                                 ptr);
 405                 }
 406                 if (rqst[1].rq_iov)
 407                         SMB2_query_info_free(&rqst[1]);
 408                 if (rqst[2].rq_iov)
 409                         SMB2_close_free(&rqst[2]);
 410                 if (rc)
 411                         trace_smb3_query_info_compound_err(xid,  ses->Suid,
 412                                                 tcon->tid, rc);
 413                 else
 414                         trace_smb3_query_info_compound_done(xid, ses->Suid,
 415                                                 tcon->tid);
 416                 break;
 417         case SMB2_OP_POSIX_QUERY_INFO:
 418                 if (rc == 0) {
 419                         qi_rsp = (struct smb2_query_info_rsp *)
 420                                 rsp_iov[1].iov_base;
 421                         rc = smb2_validate_and_copy_iov(
 422                                 le16_to_cpu(qi_rsp->OutputBufferOffset),
 423                                 le32_to_cpu(qi_rsp->OutputBufferLength),
 424                                 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
 425                 }
 426                 if (rqst[1].rq_iov)
 427                         SMB2_query_info_free(&rqst[1]);
 428                 if (rqst[2].rq_iov)
 429                         SMB2_close_free(&rqst[2]);
 430                 if (rc)
 431                         trace_smb3_posix_query_info_compound_err(xid,  ses->Suid, tcon->tid, rc);
 432                 else
 433                         trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
 434                 break;
 435         case SMB2_OP_DELETE:
 436                 if (rc)
 437                         trace_smb3_delete_err(xid,  ses->Suid, tcon->tid, rc);
 438                 else
 439                         trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
 440                 if (rqst[1].rq_iov)
 441                         SMB2_close_free(&rqst[1]);
 442                 break;
 443         case SMB2_OP_MKDIR:
 444                 if (rc)
 445                         trace_smb3_mkdir_err(xid,  ses->Suid, tcon->tid, rc);
 446                 else
 447                         trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
 448                 if (rqst[1].rq_iov)
 449                         SMB2_close_free(&rqst[1]);
 450                 break;
 451         case SMB2_OP_HARDLINK:
 452                 if (rc)
 453                         trace_smb3_hardlink_err(xid,  ses->Suid, tcon->tid, rc);
 454                 else
 455                         trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
 456                 free_set_inf_compound(rqst);
 457                 break;
 458         case SMB2_OP_RENAME:
 459                 if (rc)
 460                         trace_smb3_rename_err(xid,  ses->Suid, tcon->tid, rc);
 461                 else
 462                         trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
 463                 free_set_inf_compound(rqst);
 464                 break;
 465         case SMB2_OP_RMDIR:
 466                 if (rc)
 467                         trace_smb3_rmdir_err(xid,  ses->Suid, tcon->tid, rc);
 468                 else
 469                         trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
 470                 free_set_inf_compound(rqst);
 471                 break;
 472         case SMB2_OP_SET_EOF:
 473                 if (rc)
 474                         trace_smb3_set_eof_err(xid,  ses->Suid, tcon->tid, rc);
 475                 else
 476                         trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
 477                 free_set_inf_compound(rqst);
 478                 break;
 479         case SMB2_OP_SET_INFO:
 480                 if (rc)
 481                         trace_smb3_set_info_compound_err(xid,  ses->Suid,
 482                                                 tcon->tid, rc);
 483                 else
 484                         trace_smb3_set_info_compound_done(xid, ses->Suid,
 485                                                 tcon->tid);
 486                 free_set_inf_compound(rqst);
 487                 break;
 488         }
 489         free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
 490         free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
 491         free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
 492         kfree(vars);
 493         return rc;
 494 }
 495
 496 void
 497 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
 498 {
 499         memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
 500         dst->CurrentByteOffset = src->CurrentByteOffset;
 501         dst->Mode = src->Mode;
 502         dst->AlignmentRequirement = src->AlignmentRequirement;
 503         dst->IndexNumber1 = 0; /* we don't use it */
 504 }
 505
 506 int
 507 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 508                      struct cifs_sb_info *cifs_sb, const char *full_path,
 509                      FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
 510 {
 511         int rc;
 512         struct smb2_file_all_info *smb2_data;
 513         __u32 create_options = 0;
 514         struct cifs_fid fid;
 515         bool no_cached_open = tcon->nohandlecache;
 516         struct cifsFileInfo *cfile;
 517
 518         *adjust_tz = false;
 519         *symlink = false;
 520
 521         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
 522                             GFP_KERNEL);
 523         if (smb2_data == NULL)
 524                 return -ENOMEM;
 525
 526         /* If it is a root and its handle is cached then use it */
 527         if (!strlen(full_path) && !no_cached_open) {
 528                 rc = open_shroot(xid, tcon, cifs_sb, &fid);
 529                 if (rc)
 530                         goto out;
 531
 532                 if (tcon->crfid.file_all_info_is_valid) {
 533                         move_smb2_info_to_cifs(data,
 534                                                &tcon->crfid.file_all_info);
 535                 } else {
 536                         rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
 537                                              fid.volatile_fid, smb2_data);
 538                         if (!rc)
 539                                 move_smb2_info_to_cifs(data, smb2_data);
 540                 }
 541                 close_shroot(&tcon->crfid);
 542                 goto out;
 543         }
 544
 545         cifs_get_readable_path(tcon, full_path, &cfile);
 546         rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 547                               FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
 548                               ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
 549         if (rc == -EOPNOTSUPP) {
 550                 *symlink = true;
 551                 create_options |= OPEN_REPARSE_POINT;
 552
 553                 /* Failed on a symbolic link - query a reparse point info */
 554                 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 555                                       FILE_READ_ATTRIBUTES, FILE_OPEN,
 556                                       create_options, ACL_NO_MODE,
 557                                       smb2_data, SMB2_OP_QUERY_INFO, NULL);
 558         }
 559         if (rc)
 560                 goto out;
 561
 562         move_smb2_info_to_cifs(data, smb2_data);
 563 out:
 564         kfree(smb2_data);
 565         return rc;
 566 }
 567
 568
 569 int
 570 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 571                      struct cifs_sb_info *cifs_sb, const char *full_path,
 572                      struct smb311_posix_qinfo *data, bool *adjust_tz, bool *symlink)
 573 {
 574         int rc;
 575         __u32 create_options = 0;
 576         struct cifsFileInfo *cfile;
 577         struct smb311_posix_qinfo *smb2_data;
 578
 579         *adjust_tz = false;
 580         *symlink = false;
 581
 582         /* BB TODO: Make struct larger when add support for parsing owner SIDs */
 583         smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
 584                             GFP_KERNEL);
 585         if (smb2_data == NULL)
 586                 return -ENOMEM;
 587
 588         /*
 589          * BB TODO: Add support for using the cached root handle.
 590          * Create SMB2_query_posix_info worker function to do non-compounded query
 591          * when we already have an open file handle for this. For now this is fast enough
 592          * (always using the compounded version).
 593          */
 594
 595         cifs_get_readable_path(tcon, full_path, &cfile);
 596         rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 597                               FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
 598                               ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
 599         if (rc == -EOPNOTSUPP) {
 600                 /* BB TODO: When support for special files added to Samba re-verify this path */
 601                 *symlink = true;
 602                 create_options |= OPEN_REPARSE_POINT;
 603
 604                 /* Failed on a symbolic link - query a reparse point info */
 605                 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 606                                       FILE_READ_ATTRIBUTES, FILE_OPEN,
 607                                       create_options, ACL_NO_MODE,
 608                                       smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
 609         }
 610         if (rc)
 611                 goto out;
 612
 613          /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
 614         memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
 615
 616 out:
 617         kfree(smb2_data);
 618         return rc;
 619 }
 620
 621 int
 622 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
 623            struct cifs_tcon *tcon, const char *name,
 624            struct cifs_sb_info *cifs_sb)
 625 {
 626         return smb2_compound_op(xid, tcon, cifs_sb, name,
 627                                 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
 628                                 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
 629                                 NULL);
 630 }
 631
 632 void
 633 smb2_mkdir_setinfo(struct inode *inode, const char *name,
 634                    struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
 635                    const unsigned int xid)
 636 {
 637         FILE_BASIC_INFO data;
 638         struct cifsInodeInfo *cifs_i;
 639         struct cifsFileInfo *cfile;
 640         u32 dosattrs;
 641         int tmprc;
 642
 643         memset(&data, 0, sizeof(data));
 644         cifs_i = CIFS_I(inode);
 645         dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
 646         data.Attributes = cpu_to_le32(dosattrs);
 647         cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
 648         tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
 649                                  FILE_WRITE_ATTRIBUTES, FILE_CREATE,
 650                                  CREATE_NOT_FILE, ACL_NO_MODE,
 651                                  &data, SMB2_OP_SET_INFO, cfile);
 652         if (tmprc == 0)
 653                 cifs_i->cifsAttrs = dosattrs;
 654 }
 655
 656 int
 657 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
 658            struct cifs_sb_info *cifs_sb)
 659 {
 660         return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
 661                                 CREATE_NOT_FILE, ACL_NO_MODE,
 662                                 NULL, SMB2_OP_RMDIR, NULL);
 663 }
 664
 665 int
 666 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
 667             struct cifs_sb_info *cifs_sb)
 668 {
 669         return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
 670                                 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
 671                                 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
 672 }
 673
 674 static int
 675 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
 676                    const char *from_name, const char *to_name,
 677                    struct cifs_sb_info *cifs_sb, __u32 access, int command,
 678                    struct cifsFileInfo *cfile)
 679 {
 680         __le16 *smb2_to_name = NULL;
 681         int rc;
 682
 683         smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
 684         if (smb2_to_name == NULL) {
 685                 rc = -ENOMEM;
 686                 goto smb2_rename_path;
 687         }
 688         rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
 689                               FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
 690                               command, cfile);
 691 smb2_rename_path:
 692         kfree(smb2_to_name);
 693         return rc;
 694 }
 695
 696 int
 697 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
 698                  const char *from_name, const char *to_name,
 699                  struct cifs_sb_info *cifs_sb)
 700 {
 701         struct cifsFileInfo *cfile;
 702
 703         cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
 704
 705         return smb2_set_path_attr(xid, tcon, from_name, to_name,
 706                                   cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
 707 }
 708
 709 int
 710 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
 711                      const char *from_name, const char *to_name,
 712                      struct cifs_sb_info *cifs_sb)
 713 {
 714         return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
 715                                   FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
 716                                   NULL);
 717 }
 718
 719 int
 720 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
 721                    const char *full_path, __u64 size,
 722                    struct cifs_sb_info *cifs_sb, bool set_alloc)
 723 {
 724         __le64 eof = cpu_to_le64(size);
 725
 726         return smb2_compound_op(xid, tcon, cifs_sb, full_path,
 727                                 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
 728                                 &eof, SMB2_OP_SET_EOF, NULL);
 729 }
 730
 731 int
 732 smb2_set_file_info(struct inode *inode, const char *full_path,
 733                    FILE_BASIC_INFO *buf, const unsigned int xid)
 734 {
 735         struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 736         struct tcon_link *tlink;
 737         int rc;
 738
 739         if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
 740             (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
 741             (buf->Attributes == 0))
 742                 return 0; /* would be a no op, no sense sending this */
 743
 744         tlink = cifs_sb_tlink(cifs_sb);
 745         if (IS_ERR(tlink))
 746                 return PTR_ERR(tlink);
 747
 748         rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
 749                               FILE_WRITE_ATTRIBUTES, FILE_OPEN,
 750                               0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
 751         cifs_put_tlink(tlink);
 752         return rc;
 753 }