fs/cifs/smb2inode.c

   1 // SPDX-License-Identifier: LGPL-2.1
   2 /*
   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  */
  10 #include <linux/fs.h>
  11 #include <linux/stat.h>
  12 #include <linux/slab.h>
  13 #include <linux/pagemap.h>
  14 #include <asm/div64.h>
  15 #include "cifsfs.h"
  16 #include "cifspdu.h"
  17 #include "cifsglob.h"
  18 #include "cifsproto.h"
  19 #include "cifs_debug.h"
  20 #include "cifs_fs_sb.h"
  21 #include "cifs_unicode.h"
  22 #include "fscache.h"
  23 #include "smb2glob.h"
  24 #include "smb2pdu.h"
  25 #include "smb2proto.h"
  26
  27 static void
  28 free_set_inf_compound(struct smb_rqst *rqst)
  29 {
  30         if (rqst[1].rq_iov)
  31                 SMB2_set_info_free(&rqst[1]);
  32         if (rqst[2].rq_iov)
  33                 SMB2_close_free(&rqst[2]);
  34 }
  35
  36
  37 struct cop_vars {
  38         struct cifs_open_parms oparms;
  39         struct kvec rsp_iov[3];
  40         struct smb_rqst rqst[3];
  41         struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
  42         struct kvec qi_iov[1];
  43         struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
  44         struct kvec close_iov[1];
  45         struct smb2_file_rename_info rename_info;
  46         struct smb2_file_link_info link_info;
  47 };
  48
  49 static int
  50 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
  51                  struct cifs_sb_info *cifs_sb, const char *full_path,
  52                  __u32 desired_access, __u32 create_disposition,
  53                  __u32 create_options, umode_t mode, void *ptr, int command,
  54                  struct cifsFileInfo *cfile)
  55 {
  56         struct cop_vars *vars = NULL;
  57         struct kvec *rsp_iov;
  58         struct smb_rqst *rqst;
  59         int rc;
  60         __le16 *utf16_path = NULL;
  61         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
  62         struct cifs_fid fid;
  63         struct cifs_ses *ses = tcon->ses;
  64         struct TCP_Server_Info *server;
  65         int num_rqst = 0;
  66         int resp_buftype[3];
  67         struct smb2_query_info_rsp *qi_rsp = NULL;
  68         int flags = 0;
  69         __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
  70         unsigned int size[2];
  71         void *data[2];
  72         int len;
  73
  74         vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
  75         if (vars == NULL)
  76                 return -ENOMEM;
  77         rqst = &vars->rqst[0];
  78         rsp_iov = &vars->rsp_iov[0];
  79
  80         server = cifs_pick_channel(ses);
  81
  82         if (smb3_encryption_required(tcon))
  83                 flags |= CIFS_TRANSFORM_REQ;
  84
  85         resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
  86
  87         /* We already have a handle so we can skip the open */
  88         if (cfile)
  89                 goto after_open;
  90
  91         /* Open */
  92         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
  93         if (!utf16_path) {
  94                 rc = -ENOMEM;
  95                 goto finished;
  96         }
  97
  98         vars->oparms.tcon = tcon;
  99         vars->oparms.desired_access = desired_access;
 100         vars->oparms.disposition = create_disposition;
 101         vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
 102         vars->oparms.fid = &fid;
 103         vars->oparms.reconnect = false;
 104         vars->oparms.mode = mode;
 105         vars->oparms.cifs_sb = cifs_sb;
 106
 107         rqst[num_rqst].rq_iov = &vars->open_iov[0];
 108         rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
 109         rc = SMB2_open_init(tcon, server,
 110                             &rqst[num_rqst], &oplock, &vars->oparms,
 111                             utf16_path);
 112         kfree(utf16_path);
 113         if (rc)
 114                 goto finished;
 115
 116         smb2_set_next_command(tcon, &rqst[num_rqst]);
 117  after_open:
 118         num_rqst++;
 119         rc = 0;
 120
 121         /* Operation */
 122         switch (command) {
 123         case SMB2_OP_QUERY_INFO:
 124                 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
 125                 rqst[num_rqst].rq_nvec = 1;
 126
 127                 if (cfile)
 128                         rc = SMB2_query_info_init(tcon, server,
 129                                 &rqst[num_rqst],
 130                                 cfile->fid.persistent_fid,
 131                                 cfile->fid.volatile_fid,
 132                                 FILE_ALL_INFORMATION,
 133                                 SMB2_O_INFO_FILE, 0,
 134                                 sizeof(struct smb2_file_all_info) +
 135                                           PATH_MAX * 2, 0, NULL);
 136                 else {
 137                         rc = SMB2_query_info_init(tcon, server,
 138                                 &rqst[num_rqst],
 139                                 COMPOUND_FID,
 140                                 COMPOUND_FID,
 141                                 FILE_ALL_INFORMATION,
 142                                 SMB2_O_INFO_FILE, 0,
 143                                 sizeof(struct smb2_file_all_info) +
 144                                           PATH_MAX * 2, 0, NULL);
 145                         if (!rc) {
 146                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 147                                 smb2_set_related(&rqst[num_rqst]);
 148                         }
 149                 }
 150
 151                 if (rc)
 152                         goto finished;
 153                 num_rqst++;
 154                 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
 155                                                      full_path);
 156                 break;
 157         case SMB2_OP_POSIX_QUERY_INFO:
 158                 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
 159                 rqst[num_rqst].rq_nvec = 1;
 160
 161                 if (cfile)
 162                         rc = SMB2_query_info_init(tcon, server,
 163                                 &rqst[num_rqst],
 164                                 cfile->fid.persistent_fid,
 165                                 cfile->fid.volatile_fid,
 166                                 SMB_FIND_FILE_POSIX_INFO,
 167                                 SMB2_O_INFO_FILE, 0,
 168                                 /* TBD: fix following to allow for longer SIDs */
 169                                 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
 170                                 (sizeof(struct cifs_sid) * 2), 0, NULL);
 171                 else {
 172                         rc = SMB2_query_info_init(tcon, server,
 173                                 &rqst[num_rqst],
 174                                 COMPOUND_FID,
 175                                 COMPOUND_FID,
 176                                 SMB_FIND_FILE_POSIX_INFO,
 177                                 SMB2_O_INFO_FILE, 0,
 178                                 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
 179                                 (sizeof(struct cifs_sid) * 2), 0, NULL);
 180                         if (!rc) {
 181                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 182                                 smb2_set_related(&rqst[num_rqst]);
 183                         }
 184                 }
 185
 186                 if (rc)
 187                         goto finished;
 188                 num_rqst++;
 189                 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
 190                 break;
 191         case SMB2_OP_DELETE:
 192                 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
 193                 break;
 194         case SMB2_OP_MKDIR:
 195                 /*
 196                  * Directories are created through parameters in the
 197                  * SMB2_open() call.
 198                  */
 199                 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
 200                 break;
 201         case SMB2_OP_RMDIR:
 202                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 203                 rqst[num_rqst].rq_nvec = 1;
 204
 205                 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
 206                 data[0] = &delete_pending[0];
 207
 208                 rc = SMB2_set_info_init(tcon, server,
 209                                         &rqst[num_rqst], COMPOUND_FID,
 210                                         COMPOUND_FID, current->tgid,
 211                                         FILE_DISPOSITION_INFORMATION,
 212                                         SMB2_O_INFO_FILE, 0, data, size);
 213                 if (rc)
 214                         goto finished;
 215                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 216                 smb2_set_related(&rqst[num_rqst++]);
 217                 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
 218                 break;
 219         case SMB2_OP_SET_EOF:
 220                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 221                 rqst[num_rqst].rq_nvec = 1;
 222
 223                 size[0] = 8; /* sizeof __le64 */
 224                 data[0] = ptr;
 225
 226                 if (cfile) {
 227                         rc = SMB2_set_info_init(tcon, server,
 228                                                 &rqst[num_rqst],
 229                                                 cfile->fid.persistent_fid,
 230                                                 cfile->fid.volatile_fid,
 231                                                 current->tgid,
 232                                                 FILE_END_OF_FILE_INFORMATION,
 233                                                 SMB2_O_INFO_FILE, 0,
 234                                                 data, size);
 235                 } else {
 236                         rc = SMB2_set_info_init(tcon, server,
 237                                                 &rqst[num_rqst],
 238                                                 COMPOUND_FID,
 239                                                 COMPOUND_FID,
 240                                                 current->tgid,
 241                                                 FILE_END_OF_FILE_INFORMATION,
 242                                                 SMB2_O_INFO_FILE, 0,
 243                                                 data, size);
 244                         if (!rc) {
 245                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 246                                 smb2_set_related(&rqst[num_rqst]);
 247                         }
 248                 }
 249                 if (rc)
 250                         goto finished;
 251                 num_rqst++;
 252                 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
 253                 break;
 254         case SMB2_OP_SET_INFO:
 255                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 256                 rqst[num_rqst].rq_nvec = 1;
 257
 258
 259                 size[0] = sizeof(FILE_BASIC_INFO);
 260                 data[0] = ptr;
 261
 262                 if (cfile)
 263                         rc = SMB2_set_info_init(tcon, server,
 264                                 &rqst[num_rqst],
 265                                 cfile->fid.persistent_fid,
 266                                 cfile->fid.volatile_fid, current->tgid,
 267                                 FILE_BASIC_INFORMATION,
 268                                 SMB2_O_INFO_FILE, 0, data, size);
 269                 else {
 270                         rc = SMB2_set_info_init(tcon, server,
 271                                 &rqst[num_rqst],
 272                                 COMPOUND_FID,
 273                                 COMPOUND_FID, current->tgid,
 274                                 FILE_BASIC_INFORMATION,
 275                                 SMB2_O_INFO_FILE, 0, data, size);
 276                         if (!rc) {
 277                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 278                                 smb2_set_related(&rqst[num_rqst]);
 279                         }
 280                 }
 281
 282                 if (rc)
 283                         goto finished;
 284                 num_rqst++;
 285                 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
 286                                                    full_path);
 287                 break;
 288         case SMB2_OP_RENAME:
 289                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 290                 rqst[num_rqst].rq_nvec = 2;
 291
 292                 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
 293
 294                 vars->rename_info.ReplaceIfExists = 1;
 295                 vars->rename_info.RootDirectory = 0;
 296                 vars->rename_info.FileNameLength = cpu_to_le32(len);
 297
 298                 size[0] = sizeof(struct smb2_file_rename_info);
 299                 data[0] = &vars->rename_info;
 300
 301                 size[1] = len + 2 /* null */;
 302                 data[1] = (__le16 *)ptr;
 303
 304                 if (cfile)
 305                         rc = SMB2_set_info_init(tcon, server,
 306                                                 &rqst[num_rqst],
 307                                                 cfile->fid.persistent_fid,
 308                                                 cfile->fid.volatile_fid,
 309                                         current->tgid, FILE_RENAME_INFORMATION,
 310                                         SMB2_O_INFO_FILE, 0, data, size);
 311                 else {
 312                         rc = SMB2_set_info_init(tcon, server,
 313                                         &rqst[num_rqst],
 314                                         COMPOUND_FID, COMPOUND_FID,
 315                                         current->tgid, FILE_RENAME_INFORMATION,
 316                                         SMB2_O_INFO_FILE, 0, data, size);
 317                         if (!rc) {
 318                                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 319                                 smb2_set_related(&rqst[num_rqst]);
 320                         }
 321                 }
 322                 if (rc)
 323                         goto finished;
 324                 num_rqst++;
 325                 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
 326                 break;
 327         case SMB2_OP_HARDLINK:
 328                 rqst[num_rqst].rq_iov = &vars->si_iov[0];
 329                 rqst[num_rqst].rq_nvec = 2;
 330
 331                 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
 332
 333                 vars->link_info.ReplaceIfExists = 0;
 334                 vars->link_info.RootDirectory = 0;
 335                 vars->link_info.FileNameLength = cpu_to_le32(len);
 336
 337                 size[0] = sizeof(struct smb2_file_link_info);
 338                 data[0] = &vars->link_info;
 339
 340                 size[1] = len + 2 /* null */;
 341                 data[1] = (__le16 *)ptr;
 342
 343                 rc = SMB2_set_info_init(tcon, server,
 344                                         &rqst[num_rqst], COMPOUND_FID,
 345                                         COMPOUND_FID, current->tgid,
 346                                         FILE_LINK_INFORMATION,
 347                                         SMB2_O_INFO_FILE, 0, data, size);
 348                 if (rc)
 349                         goto finished;
 350                 smb2_set_next_command(tcon, &rqst[num_rqst]);
 351                 smb2_set_related(&rqst[num_rqst++]);
 352                 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
 353                 break;
 354         default:
 355                 cifs_dbg(VFS, "Invalid command\n");
 356                 rc = -EINVAL;
 357         }
 358         if (rc)
 359                 goto finished;
 360
 361         /* We already have a handle so we can skip the close */
 362         if (cfile)
 363                 goto after_close;
 364         /* Close */
 365         flags |= CIFS_CP_CREATE_CLOSE_OP;
 366         rqst[num_rqst].rq_iov = &vars->close_iov[0];
 367         rqst[num_rqst].rq_nvec = 1;
 368         rc = SMB2_close_init(tcon, server,
 369                              &rqst[num_rqst], COMPOUND_FID,
 370                              COMPOUND_FID, false);
 371         smb2_set_related(&rqst[num_rqst]);
 372         if (rc)
 373                 goto finished;
 374  after_close:
 375         num_rqst++;
 376
 377         if (cfile) {
 378                 rc = compound_send_recv(xid, ses, server,
 379                                         flags, num_rqst - 2,
 380                                         &rqst[1], &resp_buftype[1],
 381                                         &rsp_iov[1]);
 382         } else
 383                 rc = compound_send_recv(xid, ses, server,
 384                                         flags, num_rqst,
 385                                         rqst, resp_buftype,
 386                                         rsp_iov);
 387
 388  finished:
 389         if (cfile)
 390                 cifsFileInfo_put(cfile);
 391
 392         SMB2_open_free(&rqst[0]);
 393         if (rc == -EREMCHG) {
 394                 pr_warn_once("server share %s deleted\n", tcon->treeName);
 395                 tcon->need_reconnect = true;
 396         }
 397
 398         switch (command) {
 399         case SMB2_OP_QUERY_INFO:
 400                 if (rc == 0) {
 401                         qi_rsp = (struct smb2_query_info_rsp *)
 402                                 rsp_iov[1].iov_base;
 403                         rc = smb2_validate_and_copy_iov(
 404                                 le16_to_cpu(qi_rsp->OutputBufferOffset),
 405                                 le32_to_cpu(qi_rsp->OutputBufferLength),
 406                                 &rsp_iov[1], sizeof(struct smb2_file_all_info),
 407                                 ptr);
 408                 }
 409                 if (rqst[1].rq_iov)
 410                         SMB2_query_info_free(&rqst[1]);
 411                 if (rqst[2].rq_iov)
 412                         SMB2_close_free(&rqst[2]);
 413                 if (rc)
 414                         trace_smb3_query_info_compound_err(xid,  ses->Suid,
 415                                                 tcon->tid, rc);
 416                 else
 417                         trace_smb3_query_info_compound_done(xid, ses->Suid,
 418                                                 tcon->tid);
 419                 break;
 420         case SMB2_OP_POSIX_QUERY_INFO:
 421                 if (rc == 0) {
 422                         qi_rsp = (struct smb2_query_info_rsp *)
 423                                 rsp_iov[1].iov_base;
 424                         rc = smb2_validate_and_copy_iov(
 425                                 le16_to_cpu(qi_rsp->OutputBufferOffset),
 426                                 le32_to_cpu(qi_rsp->OutputBufferLength),
 427                                 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
 428                 }
 429                 if (rqst[1].rq_iov)
 430                         SMB2_query_info_free(&rqst[1]);
 431                 if (rqst[2].rq_iov)
 432                         SMB2_close_free(&rqst[2]);
 433                 if (rc)
 434                         trace_smb3_posix_query_info_compound_err(xid,  ses->Suid, tcon->tid, rc);
 435                 else
 436                         trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
 437                 break;
 438         case SMB2_OP_DELETE:
 439                 if (rc)
 440                         trace_smb3_delete_err(xid,  ses->Suid, tcon->tid, rc);
 441                 else
 442                         trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
 443                 if (rqst[1].rq_iov)
 444                         SMB2_close_free(&rqst[1]);
 445                 break;
 446         case SMB2_OP_MKDIR:
 447                 if (rc)
 448                         trace_smb3_mkdir_err(xid,  ses->Suid, tcon->tid, rc);
 449                 else
 450                         trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
 451                 if (rqst[1].rq_iov)
 452                         SMB2_close_free(&rqst[1]);
 453                 break;
 454         case SMB2_OP_HARDLINK:
 455                 if (rc)
 456                         trace_smb3_hardlink_err(xid,  ses->Suid, tcon->tid, rc);
 457                 else
 458                         trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
 459                 free_set_inf_compound(rqst);
 460                 break;
 461         case SMB2_OP_RENAME:
 462                 if (rc)
 463                         trace_smb3_rename_err(xid,  ses->Suid, tcon->tid, rc);
 464                 else
 465                         trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
 466                 free_set_inf_compound(rqst);
 467                 break;
 468         case SMB2_OP_RMDIR:
 469                 if (rc)
 470                         trace_smb3_rmdir_err(xid,  ses->Suid, tcon->tid, rc);
 471                 else
 472                         trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
 473                 free_set_inf_compound(rqst);
 474                 break;
 475         case SMB2_OP_SET_EOF:
 476                 if (rc)
 477                         trace_smb3_set_eof_err(xid,  ses->Suid, tcon->tid, rc);
 478                 else
 479                         trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
 480                 free_set_inf_compound(rqst);
 481                 break;
 482         case SMB2_OP_SET_INFO:
 483                 if (rc)
 484                         trace_smb3_set_info_compound_err(xid,  ses->Suid,
 485                                                 tcon->tid, rc);
 486                 else
 487                         trace_smb3_set_info_compound_done(xid, ses->Suid,
 488                                                 tcon->tid);
 489                 free_set_inf_compound(rqst);
 490                 break;
 491         }
 492         free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
 493         free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
 494         free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
 495         kfree(vars);
 496         return rc;
 497 }
 498
 499 void
 500 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
 501 {
 502         memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
 503         dst->CurrentByteOffset = src->CurrentByteOffset;
 504         dst->Mode = src->Mode;
 505         dst->AlignmentRequirement = src->AlignmentRequirement;
 506         dst->IndexNumber1 = 0; /* we don't use it */
 507 }
 508
 509 int
 510 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 511                      struct cifs_sb_info *cifs_sb, const char *full_path,
 512                      FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
 513 {
 514         int rc;
 515         struct smb2_file_all_info *smb2_data;
 516         __u32 create_options = 0;
 517         struct cifsFileInfo *cfile;
 518         struct cached_fid *cfid = NULL;
 519
 520         *adjust_tz = false;
 521         *reparse = false;
 522
 523         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
 524                             GFP_KERNEL);
 525         if (smb2_data == NULL)
 526                 return -ENOMEM;
 527
 528         /* If it is a root and its handle is cached then use it */
 529         rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid);
 530         if (!rc) {
 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,
 536                                              cfid->fid->persistent_fid,
 537                                              cfid->fid->volatile_fid, smb2_data);
 538                         if (!rc)
 539                                 move_smb2_info_to_cifs(data, smb2_data);
 540                 }
 541                 close_cached_dir(cfid);
 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                 *reparse = 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 *reparse)
 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         *reparse = 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                 *reparse = 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 }