source3/modules/vfs_gpfs.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Samba VFS module for GPFS filesystem
   4  *  Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
   5  *  Copyright (C) Christof Schmitt 2015
   6  *  Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
   7  *                           and Gomati Mohanan <gomati.mohanan@in.ibm.com>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 3 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program 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 the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include "includes.h"
  24 #include "smbd/smbd.h"
  25 #include "include/smbprofile.h"
  26 #include "modules/non_posix_acls.h"
  27 #include "libcli/security/security.h"
  28 #include "nfs4_acls.h"
  29 #include "system/filesys.h"
  30 #include "auth.h"
  31 #include "lib/util/tevent_unix.h"
  32 #include "lib/util/gpfswrap.h"
  33
  34 #include <gnutls/gnutls.h>
  35 #include <gnutls/crypto.h>
  36 #include "lib/crypto/gnutls_helpers.h"
  37
  38 #undef DBGC_CLASS
  39 #define DBGC_CLASS DBGC_VFS
  40
  41 #ifndef GPFS_GETACL_NATIVE
  42 #define GPFS_GETACL_NATIVE 0x00000004
  43 #endif
  44
  45 struct gpfs_config_data {
  46         struct smbacl4_vfs_params nfs4_params;
  47         bool sharemodes;
  48         bool leases;
  49         bool hsm;
  50         bool syncio;
  51         bool winattr;
  52         bool ftruncate;
  53         bool getrealfilename;
  54         bool dfreequota;
  55         bool acl;
  56         bool settimes;
  57         bool recalls;
  58 };
  59
  60 struct gpfs_fsp_extension {
  61         bool offline;
  62 };
  63
  64 static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
  65 {
  66         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
  67                 return gacl->v4Level1.acl_flags;
  68         }
  69         return 0;
  70 }
  71
  72 static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
  73 {
  74         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
  75                 return &gacl->v4Level1.ace_v4[i];
  76         }
  77         return &gacl->ace_v4[i];
  78 }
  79
  80 static unsigned int vfs_gpfs_access_mask_to_allow(uint32_t access_mask)
  81 {
  82         unsigned int allow = GPFS_SHARE_NONE;
  83
  84         if (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA)) {
  85                 allow |= GPFS_SHARE_WRITE;
  86         }
  87         if (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) {
  88                 allow |= GPFS_SHARE_READ;
  89         }
  90
  91         return allow;
  92 }
  93
  94 static unsigned int vfs_gpfs_share_access_to_deny(uint32_t share_access)
  95 {
  96         unsigned int deny = GPFS_DENY_NONE;
  97
  98         if (!(share_access & FILE_SHARE_WRITE)) {
  99                 deny |= GPFS_DENY_WRITE;
 100         }
 101         if (!(share_access & FILE_SHARE_READ)) {
 102                 deny |= GPFS_DENY_READ;
 103         }
 104
 105         /*
 106          * GPFS_DENY_DELETE can only be set together with either
 107          * GPFS_DENY_WRITE or GPFS_DENY_READ.
 108          */
 109         if ((deny & (GPFS_DENY_WRITE|GPFS_DENY_READ)) &&
 110             !(share_access & FILE_SHARE_DELETE)) {
 111                 deny |= GPFS_DENY_DELETE;
 112         }
 113
 114         return deny;
 115 }
 116
 117 static int set_gpfs_sharemode(files_struct *fsp, uint32_t access_mask,
 118                               uint32_t share_access)
 119 {
 120         unsigned int allow = GPFS_SHARE_NONE;
 121         unsigned int deny = GPFS_DENY_NONE;
 122         int result;
 123
 124         if (access_mask == 0) {
 125                 DBG_DEBUG("Clearing file system share mode.\n");
 126         } else {
 127                 allow = vfs_gpfs_access_mask_to_allow(access_mask);
 128                 deny = vfs_gpfs_share_access_to_deny(share_access);
 129         }
 130         DBG_DEBUG("access_mask=0x%x, allow=0x%x, share_access=0x%x, "
 131                   "deny=0x%x\n", access_mask, allow, share_access, deny);
 132
 133         result = gpfswrap_set_share(fsp_get_io_fd(fsp), allow, deny);
 134         if (result == 0) {
 135                 return 0;
 136         }
 137
 138         if (errno == EACCES) {
 139                 DBG_NOTICE("GPFS share mode denied for %s/%s.\n",
 140                            fsp->conn->connectpath,
 141                            fsp->fsp_name->base_name);
 142         } else if (errno == EPERM) {
 143                 DBG_ERR("Samba requested GPFS sharemode for %s/%s, but the "
 144                         "GPFS file system is not configured accordingly. "
 145                         "Configure file system with mmchfs -D nfs4 or "
 146                         "set gpfs:sharemodes=no in Samba.\n",
 147                         fsp->conn->connectpath,
 148                         fsp->fsp_name->base_name);
 149         } else {
 150                 DBG_ERR("gpfs_set_share failed: %s\n", strerror(errno));
 151         }
 152
 153         return result;
 154 }
 155
 156 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
 157                                  uint32_t share_access, uint32_t access_mask)
 158 {
 159
 160         struct gpfs_config_data *config;
 161         int ret = 0;
 162
 163         START_PROFILE(syscall_kernel_flock);
 164
 165         SMB_VFS_HANDLE_GET_DATA(handle, config,
 166                                 struct gpfs_config_data,
 167                                 return -1);
 168
 169         if(!config->sharemodes) {
 170                 return 0;
 171         }
 172
 173         /*
 174          * A named stream fsp will have the basefile open in the fsp
 175          * fd, so lacking a distinct fd for the stream we have to skip
 176          * kernel_flock and set_gpfs_sharemode for stream.
 177          */
 178         if (is_named_stream(fsp->fsp_name)) {
 179                 DBG_NOTICE("Not requesting GPFS sharemode on stream: %s/%s\n",
 180                            fsp->conn->connectpath,
 181                            fsp_str_dbg(fsp));
 182                 return 0;
 183         }
 184
 185         kernel_flock(fsp_get_io_fd(fsp), share_access, access_mask);
 186
 187         ret = set_gpfs_sharemode(fsp, access_mask, share_access);
 188
 189         END_PROFILE(syscall_kernel_flock);
 190
 191         return ret;
 192 }
 193
 194 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
 195 {
 196
 197         struct gpfs_config_data *config;
 198
 199         SMB_VFS_HANDLE_GET_DATA(handle, config,
 200                                 struct gpfs_config_data,
 201                                 return -1);
 202
 203         if (config->sharemodes &&
 204             (fsp->fsp_flags.kernel_share_modes_taken))
 205         {
 206                 /*
 207                  * Always clear GPFS sharemode in case the actual
 208                  * close gets deferred due to outstanding POSIX locks
 209                  * (see fd_close_posix)
 210                  */
 211                 int ret = gpfswrap_set_share(fsp_get_io_fd(fsp), 0, 0);
 212                 if (ret != 0) {
 213                         DBG_ERR("Clearing GPFS sharemode on close failed for "
 214                                 " %s/%s: %s\n",
 215                                 fsp->conn->connectpath,
 216                                 fsp->fsp_name->base_name,
 217                                 strerror(errno));
 218                 }
 219         }
 220
 221         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 222 }
 223
 224 static int lease_type_to_gpfs(int leasetype)
 225 {
 226         if (leasetype == F_RDLCK) {
 227                 return GPFS_LEASE_READ;
 228         }
 229
 230         if (leasetype == F_WRLCK) {
 231                 return GPFS_LEASE_WRITE;
 232         }
 233
 234         return GPFS_LEASE_NONE;
 235 }
 236
 237 static int vfs_gpfs_setlease(vfs_handle_struct *handle,
 238                              files_struct *fsp,
 239                              int leasetype)
 240 {
 241         struct gpfs_config_data *config;
 242         int ret=0;
 243
 244         START_PROFILE(syscall_linux_setlease);
 245
 246         SMB_VFS_HANDLE_GET_DATA(handle, config,
 247                                 struct gpfs_config_data,
 248                                 return -1);
 249
 250         ret = linux_set_lease_sighandler(fsp_get_io_fd(fsp));
 251         if (ret == -1) {
 252                 goto failure;
 253         }
 254
 255         if (config->leases) {
 256                 int gpfs_lease_type = lease_type_to_gpfs(leasetype);
 257                 int saved_errno = 0;
 258
 259                 /*
 260                  * Ensure the lease owner is root to allow
 261                  * correct delivery of lease-break signals.
 262                  */
 263                 become_root();
 264                 ret = gpfswrap_set_lease(fsp_get_io_fd(fsp), gpfs_lease_type);
 265                 if (ret < 0) {
 266                         saved_errno = errno;
 267                 }
 268                 unbecome_root();
 269
 270                 if (saved_errno != 0) {
 271                         errno = saved_errno;
 272                 }
 273         }
 274
 275 failure:
 276         END_PROFILE(syscall_linux_setlease);
 277
 278         return ret;
 279 }
 280
 281 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
 282                                       const struct smb_filename *path,
 283                                       const char *name,
 284                                       TALLOC_CTX *mem_ctx,
 285                                       char **found_name)
 286 {
 287         int result;
 288         char *full_path = NULL;
 289         char *to_free = NULL;
 290         char real_pathname[PATH_MAX+1], tmpbuf[PATH_MAX];
 291         size_t full_path_len;
 292         int buflen;
 293         bool mangled;
 294         struct gpfs_config_data *config;
 295
 296         SMB_VFS_HANDLE_GET_DATA(handle, config,
 297                                 struct gpfs_config_data,
 298                                 return -1);
 299
 300         if (!config->getrealfilename) {
 301                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 302                                                       mem_ctx, found_name);
 303         }
 304
 305         mangled = mangle_is_mangled(name, handle->conn->params);
 306         if (mangled) {
 307                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 308                                                       mem_ctx, found_name);
 309         }
 310
 311         full_path_len = full_path_tos(path->base_name, name,
 312                                       tmpbuf, sizeof(tmpbuf),
 313                                       &full_path, &to_free);
 314         if (full_path_len == -1) {
 315                 errno = ENOMEM;
 316                 return -1;
 317         }
 318
 319         buflen = sizeof(real_pathname) - 1;
 320
 321         result = gpfswrap_get_realfilename_path(full_path, real_pathname,
 322                                                 &buflen);
 323
 324         TALLOC_FREE(to_free);
 325
 326         if ((result == -1) && (errno == ENOSYS)) {
 327                 return SMB_VFS_NEXT_GET_REAL_FILENAME(
 328                         handle, path, name, mem_ctx, found_name);
 329         }
 330
 331         if (result == -1) {
 332                 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
 333                            strerror(errno)));
 334                 return -1;
 335         }
 336
 337         /*
 338          * GPFS does not necessarily null-terminate the returned path
 339          * but instead returns the buffer length in buflen.
 340          */
 341
 342         if (buflen < sizeof(real_pathname)) {
 343                 real_pathname[buflen] = '\0';
 344         } else {
 345                 real_pathname[sizeof(real_pathname)-1] = '\0';
 346         }
 347
 348         DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
 349                    path->base_name, name, real_pathname));
 350
 351         name = strrchr_m(real_pathname, '/');
 352         if (name == NULL) {
 353                 errno = ENOENT;
 354                 return -1;
 355         }
 356
 357         *found_name = talloc_strdup(mem_ctx, name+1);
 358         if (*found_name == NULL) {
 359                 errno = ENOMEM;
 360                 return -1;
 361         }
 362
 363         return 0;
 364 }
 365
 366 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
 367 {
 368         unsigned int gpfs_aclflags = 0;
 369         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 370                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 371                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 372                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 373         gpfs_aclflags = control << 8;
 374         if (!(control & SEC_DESC_DACL_PRESENT))
 375                 gpfs_aclflags |= ACL4_FLAG_NULL_DACL;
 376         if (!(control & SEC_DESC_SACL_PRESENT))
 377                 gpfs_aclflags |= ACL4_FLAG_NULL_SACL;
 378         gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 379         gacl->v4Level1.acl_flags = gpfs_aclflags;
 380 }
 381
 382 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
 383 {
 384         uint16_t control = gpfs_aclflags >> 8;
 385         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 386                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 387                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 388                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 389         control |= SEC_DESC_SELF_RELATIVE;
 390         return control;
 391 }
 392
 393 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
 394 {
 395         gpfs_aclCount_t i;
 396         if (gacl==NULL)
 397         {
 398                 DEBUG(0, ("gpfs acl is NULL\n"));
 399                 return;
 400         }
 401
 402         DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
 403                       "control: %x\n",
 404                       gacl->acl_len, gacl->acl_level, gacl->acl_version,
 405                       gacl->acl_nace, gpfs_acl_flags(gacl)));
 406
 407         for(i=0; i<gacl->acl_nace; i++)
 408         {
 409                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 410                 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
 411                               "iflags:0x%x, who:%u\n",
 412                               i, gace->aceType, gace->aceFlags, gace->aceMask,
 413                               gace->aceIFlags, gace->aceWho));
 414         }
 415 }
 416
 417 static int gpfs_getacl_with_capability(const char *fname, int flags, void *buf)
 418 {
 419         int ret, saved_errno;
 420
 421         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
 422
 423         ret = gpfswrap_getacl(fname, flags, buf);
 424         saved_errno = errno;
 425
 426         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
 427
 428         errno = saved_errno;
 429         return ret;
 430 }
 431
 432 /*
 433  * get the ACL from GPFS, allocated on the specified mem_ctx
 434  * internally retries when initial buffer was too small
 435  *
 436  * caller needs to cast result to either
 437  * raw = yes: struct gpfs_opaque_acl
 438  * raw = no: struct gpfs_acl
 439  *
 440  */
 441 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
 442                          const char *fname,
 443                          const bool raw,
 444                          const gpfs_aclType_t type)
 445 {
 446
 447         void *aclbuf;
 448         size_t size = 512;
 449         int ret, flags;
 450         unsigned int *len;
 451         size_t struct_size;
 452         bool use_capability = false;
 453
 454 again:
 455
 456         aclbuf = talloc_zero_size(mem_ctx, size);
 457         if (aclbuf == NULL) {
 458                 errno = ENOMEM;
 459                 return NULL;
 460         }
 461
 462         if (raw) {
 463                 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
 464                 buf->acl_type = type;
 465                 flags = GPFS_GETACL_NATIVE;
 466                 len = (unsigned int *) &(buf->acl_buffer_len);
 467                 struct_size = sizeof(struct gpfs_opaque_acl);
 468         } else {
 469                 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
 470                 buf->acl_type = type;
 471                 buf->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 472                 flags = GPFS_GETACL_STRUCT;
 473                 len = &(buf->acl_len);
 474                 /* reserve space for control flags in gpfs 3.5 and beyond */
 475                 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
 476         }
 477
 478         /* set the length of the buffer as input value */
 479         *len = size;
 480
 481         if (use_capability) {
 482                 ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
 483         } else {
 484                 ret = gpfswrap_getacl(fname, flags, aclbuf);
 485                 if ((ret != 0) && (errno == EACCES)) {
 486                         DBG_DEBUG("Retry with DAC capability for %s\n", fname);
 487                         use_capability = true;
 488                         ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
 489                 }
 490         }
 491
 492         if ((ret != 0) && (errno == ENOSPC)) {
 493                 /*
 494                  * get the size needed to accommodate the complete buffer
 495                  *
 496                  * the value returned only applies to the ACL blob in the
 497                  * struct so make sure to also have headroom for the first
 498                  * struct members by adding room for the complete struct
 499                  * (might be a few bytes too much then)
 500                  */
 501                 size = *len + struct_size;
 502                 talloc_free(aclbuf);
 503                 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
 504                 goto again;
 505         }
 506
 507         if (ret != 0) {
 508                 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
 509                           strerror(errno)));
 510                 talloc_free(aclbuf);
 511                 return NULL;
 512         }
 513
 514         return aclbuf;
 515 }
 516
 517 /* Tries to get nfs4 acls and returns SMB ACL allocated.
 518  * On failure returns 1 if it got non-NFSv4 ACL to prompt
 519  * retry with POSIX ACL checks.
 520  * On failure returns -1 if there is system (GPFS) error, check errno.
 521  * Returns 0 on success
 522  */
 523 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx, const char *fname,
 524                              struct SMB4ACL_T **ppacl)
 525 {
 526         gpfs_aclCount_t i;
 527         struct gpfs_acl *gacl = NULL;
 528         DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
 529
 530         /* Get the ACL */
 531         gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
 532                                                   false, 0);
 533         if (gacl == NULL) {
 534                 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
 535                            fname, strerror(errno)));
 536                 if (errno == ENODATA) {
 537                         /*
 538                          * GPFS returns ENODATA for snapshot
 539                          * directories. Retry with POSIX ACLs check.
 540                          */
 541                         return 1;
 542                 }
 543
 544                 return -1;
 545         }
 546
 547         if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
 548                 DEBUG(10, ("Got non-nfsv4 acl\n"));
 549                 /* Retry with POSIX ACLs check */
 550                 talloc_free(gacl);
 551                 return 1;
 552         }
 553
 554         *ppacl = smb_create_smb4acl(mem_ctx);
 555
 556         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
 557                 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
 558                 smbacl4_set_controlflags(*ppacl, control);
 559         }
 560
 561         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
 562                    gacl->acl_len, gacl->acl_level, gacl->acl_version,
 563                    gacl->acl_nace, gpfs_acl_flags(gacl)));
 564
 565         for (i=0; i<gacl->acl_nace; i++) {
 566                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 567                 SMB_ACE4PROP_T smbace = { 0 };
 568                 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
 569                            "who: %d\n", gace->aceType, gace->aceIFlags,
 570                            gace->aceFlags, gace->aceMask, gace->aceWho));
 571
 572                 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
 573                         smbace.flags |= SMB_ACE4_ID_SPECIAL;
 574                         switch (gace->aceWho) {
 575                         case ACE4_SPECIAL_OWNER:
 576                                 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
 577                                 break;
 578                         case ACE4_SPECIAL_GROUP:
 579                                 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
 580                                 break;
 581                         case ACE4_SPECIAL_EVERYONE:
 582                                 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
 583                                 break;
 584                         default:
 585                                 DEBUG(8, ("invalid special gpfs id %d "
 586                                           "ignored\n", gace->aceWho));
 587                                 continue; /* don't add it */
 588                         }
 589                 } else {
 590                         if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
 591                                 smbace.who.gid = gace->aceWho;
 592                         else
 593                                 smbace.who.uid = gace->aceWho;
 594                 }
 595
 596                 /* remove redundant deny entries */
 597                 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
 598                         struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
 599                         if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
 600                             prev->aceFlags == gace->aceFlags &&
 601                             prev->aceIFlags == gace->aceIFlags &&
 602                             (gace->aceMask & prev->aceMask) == 0 &&
 603                             gace->aceWho == prev->aceWho) {
 604                                 /* it's redundant - skip it */
 605                                 continue;
 606                         }
 607                 }
 608
 609                 smbace.aceType = gace->aceType;
 610                 smbace.aceFlags = gace->aceFlags;
 611                 smbace.aceMask = gace->aceMask;
 612                 smb_add_ace4(*ppacl, &smbace);
 613         }
 614
 615         talloc_free(gacl);
 616
 617         return 0;
 618 }
 619
 620 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
 621         files_struct *fsp, uint32_t security_info,
 622         TALLOC_CTX *mem_ctx,
 623         struct security_descriptor **ppdesc)
 624 {
 625         struct SMB4ACL_T *pacl = NULL;
 626         int     result;
 627         struct gpfs_config_data *config;
 628         TALLOC_CTX *frame = talloc_stackframe();
 629         NTSTATUS status;
 630
 631         *ppdesc = NULL;
 632
 633         SMB_VFS_HANDLE_GET_DATA(handle, config,
 634                                 struct gpfs_config_data,
 635                                 return NT_STATUS_INTERNAL_ERROR);
 636
 637         if (!config->acl) {
 638                 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
 639                                                   mem_ctx, ppdesc);
 640                 TALLOC_FREE(frame);
 641                 return status;
 642         }
 643
 644         result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
 645
 646         if (result == 0) {
 647                 status = smb_fget_nt_acl_nfs4(fsp, &config->nfs4_params,
 648                                               security_info,
 649                                               mem_ctx, ppdesc, pacl);
 650                 TALLOC_FREE(frame);
 651                 return status;
 652         }
 653
 654         if (result > 0) {
 655                 DEBUG(10, ("retrying with posix acl...\n"));
 656                 status = posix_fget_nt_acl(fsp, security_info,
 657                                            mem_ctx, ppdesc);
 658                 TALLOC_FREE(frame);
 659                 return status;
 660         }
 661
 662         TALLOC_FREE(frame);
 663
 664         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 665         return map_nt_error_from_unix(errno);
 666 }
 667
 668 static bool vfs_gpfs_nfs4_ace_to_gpfs_ace(SMB_ACE4PROP_T *nfs4_ace,
 669                                           struct gpfs_ace_v4 *gace,
 670                                           uid_t owner_uid)
 671 {
 672         gace->aceType = nfs4_ace->aceType;
 673         gace->aceFlags = nfs4_ace->aceFlags;
 674         gace->aceMask = nfs4_ace->aceMask;
 675
 676         if (nfs4_ace->flags & SMB_ACE4_ID_SPECIAL) {
 677                 switch(nfs4_ace->who.special_id) {
 678                 case SMB_ACE4_WHO_EVERYONE:
 679                         gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 680                         gace->aceWho = ACE4_SPECIAL_EVERYONE;
 681                         break;
 682                 case SMB_ACE4_WHO_OWNER:
 683                         /*
 684                          * With GPFS it is not possible to deny ACL or
 685                          * attribute access to the owner. Setting an
 686                          * ACL with such an entry is not possible.
 687                          * Denying ACL or attribute access for the
 688                          * owner through a named ACL entry can be
 689                          * stored in an ACL, it is just not effective.
 690                          *
 691                          * Map this case to a named entry to allow at
 692                          * least setting this ACL, which will be
 693                          * enforced by the smbd permission check. Do
 694                          * not do this for an inheriting OWNER entry,
 695                          * as this represents a CREATOR OWNER ACE. The
 696                          * remaining limitation is that CREATOR OWNER
 697                          * cannot deny ACL or attribute access.
 698                          */
 699                         if (!nfs_ace_is_inherit(nfs4_ace) &&
 700                             nfs4_ace->aceType ==
 701                                         SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
 702                             nfs4_ace->aceMask & (SMB_ACE4_READ_ATTRIBUTES|
 703                                                  SMB_ACE4_WRITE_ATTRIBUTES|
 704                                                  SMB_ACE4_READ_ACL|
 705                                                  SMB_ACE4_WRITE_ACL)) {
 706                                 gace->aceIFlags = 0;
 707                                 gace->aceWho = owner_uid;
 708                         } else {
 709                                 gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 710                                 gace->aceWho = ACE4_SPECIAL_OWNER;
 711                         }
 712                         break;
 713                 case SMB_ACE4_WHO_GROUP:
 714                         gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 715                         gace->aceWho = ACE4_SPECIAL_GROUP;
 716                         break;
 717                 default:
 718                         DBG_WARNING("Unsupported special_id %d\n",
 719                                     nfs4_ace->who.special_id);
 720                         return false;
 721                 }
 722
 723                 return true;
 724         }
 725
 726         gace->aceIFlags = 0;
 727         gace->aceWho = (nfs4_ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) ?
 728                 nfs4_ace->who.gid : nfs4_ace->who.uid;
 729
 730         return true;
 731 }
 732
 733 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
 734                                                 files_struct *fsp,
 735                                                 struct SMB4ACL_T *smbacl,
 736                                                 bool controlflags)
 737 {
 738         struct gpfs_acl *gacl;
 739         gpfs_aclLen_t gacl_len;
 740         struct SMB4ACE_T *smbace;
 741
 742         gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
 743                 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
 744
 745         gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
 746         if (gacl == NULL) {
 747                 DEBUG(0, ("talloc failed\n"));
 748                 errno = ENOMEM;
 749                 return NULL;
 750         }
 751
 752         gacl->acl_level = GPFS_ACL_LEVEL_BASE;
 753         gacl->acl_version = GPFS_ACL_VERSION_NFS4;
 754         gacl->acl_type = GPFS_ACL_TYPE_NFS4;
 755         gacl->acl_nace = 0; /* change later... */
 756
 757         if (controlflags) {
 758                 gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 759                 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
 760         }
 761
 762         for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
 763                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
 764                 SMB_ACE4PROP_T  *aceprop = smb_get_ace4(smbace);
 765                 bool add_ace;
 766
 767                 add_ace = vfs_gpfs_nfs4_ace_to_gpfs_ace(aceprop, gace,
 768                                                         fsp->fsp_name->st.st_ex_uid);
 769                 if (!add_ace) {
 770                         continue;
 771                 }
 772
 773                 gacl->acl_nace++;
 774         }
 775         gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
 776                 - (char *)gacl;
 777         return gacl;
 778 }
 779
 780 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
 781                                    files_struct *fsp,
 782                                    struct SMB4ACL_T *smbacl)
 783 {
 784         int ret;
 785         struct gpfs_acl *gacl;
 786         TALLOC_CTX *mem_ctx = talloc_tos();
 787
 788         gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
 789         if (gacl == NULL) { /* out of memory */
 790                 return False;
 791         }
 792         ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 793                               GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
 794
 795         if ((ret != 0) && (errno == EINVAL)) {
 796                 DEBUG(10, ("Retry without nfs41 control flags\n"));
 797                 talloc_free(gacl);
 798                 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
 799                 if (gacl == NULL) { /* out of memory */
 800                         return False;
 801                 }
 802                 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 803                                       GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
 804                                       gacl);
 805         }
 806
 807         if (ret != 0) {
 808                 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
 809                 gpfs_dumpacl(8, gacl);
 810                 return False;
 811         }
 812
 813         DEBUG(10, ("gpfs_putacl succeeded\n"));
 814         return True;
 815 }
 816
 817 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
 818 {
 819         struct gpfs_acl *acl;
 820         NTSTATUS result = NT_STATUS_ACCESS_DENIED;
 821
 822         acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
 823                                                  fsp->fsp_name->base_name,
 824                                                  false, 0);
 825         if (acl == NULL) {
 826                 return map_nt_error_from_unix(errno);
 827         }
 828
 829         if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
 830                 struct gpfs_config_data *config;
 831
 832                 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
 833                                  "refuse_dacl_protected", false)
 834                     && (psd->type&SEC_DESC_DACL_PROTECTED)) {
 835                         DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
 836                         talloc_free(acl);
 837                         return NT_STATUS_NOT_SUPPORTED;
 838                 }
 839
 840                 SMB_VFS_HANDLE_GET_DATA(handle, config,
 841                                         struct gpfs_config_data,
 842                                         return NT_STATUS_INTERNAL_ERROR);
 843
 844                 result = smb_set_nt_acl_nfs4(handle,
 845                         fsp, &config->nfs4_params, security_info_sent, psd,
 846                         gpfsacl_process_smbacl);
 847         } else { /* assume POSIX ACL - by default... */
 848                 result = set_nt_acl(fsp, security_info_sent, psd);
 849         }
 850
 851         talloc_free(acl);
 852         return result;
 853 }
 854
 855 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
 856 {
 857         struct gpfs_config_data *config;
 858
 859         SMB_VFS_HANDLE_GET_DATA(handle, config,
 860                                 struct gpfs_config_data,
 861                                 return NT_STATUS_INTERNAL_ERROR);
 862
 863         if (!config->acl) {
 864                 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 865         }
 866
 867         return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
 868 }
 869
 870 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
 871 {
 872         SMB_ACL_T result;
 873         gpfs_aclCount_t i;
 874
 875         result = sys_acl_init(mem_ctx);
 876         if (result == NULL) {
 877                 errno = ENOMEM;
 878                 return NULL;
 879         }
 880
 881         result->count = pacl->acl_nace;
 882         result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
 883                                      result->count);
 884         if (result->acl == NULL) {
 885                 TALLOC_FREE(result);
 886                 errno = ENOMEM;
 887                 return NULL;
 888         }
 889
 890         for (i=0; i<pacl->acl_nace; i++) {
 891                 struct smb_acl_entry *ace = &result->acl[i];
 892                 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
 893
 894                 DEBUG(10, ("Converting type %d id %lu perm %x\n",
 895                            (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
 896                            (int)g_ace->ace_perm));
 897
 898                 switch (g_ace->ace_type) {
 899                 case GPFS_ACL_USER:
 900                         ace->a_type = SMB_ACL_USER;
 901                         ace->info.user.uid = (uid_t)g_ace->ace_who;
 902                         break;
 903                 case GPFS_ACL_USER_OBJ:
 904                         ace->a_type = SMB_ACL_USER_OBJ;
 905                         break;
 906                 case GPFS_ACL_GROUP:
 907                         ace->a_type = SMB_ACL_GROUP;
 908                         ace->info.group.gid = (gid_t)g_ace->ace_who;
 909                         break;
 910                 case GPFS_ACL_GROUP_OBJ:
 911                         ace->a_type = SMB_ACL_GROUP_OBJ;
 912                         break;
 913                 case GPFS_ACL_OTHER:
 914                         ace->a_type = SMB_ACL_OTHER;
 915                         break;
 916                 case GPFS_ACL_MASK:
 917                         ace->a_type = SMB_ACL_MASK;
 918                         break;
 919                 default:
 920                         DEBUG(10, ("Got invalid ace_type: %d\n",
 921                                    g_ace->ace_type));
 922                         TALLOC_FREE(result);
 923                         errno = EINVAL;
 924                         return NULL;
 925                 }
 926
 927                 ace->a_perm = 0;
 928                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
 929                         SMB_ACL_READ : 0;
 930                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
 931                         SMB_ACL_WRITE : 0;
 932                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
 933                         SMB_ACL_EXECUTE : 0;
 934
 935                 DEBUGADD(10, ("Converted to %d perm %x\n",
 936                               ace->a_type, ace->a_perm));
 937         }
 938
 939         return result;
 940 }
 941
 942 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type,
 943                                        TALLOC_CTX *mem_ctx)
 944 {
 945         struct gpfs_acl *pacl;
 946         SMB_ACL_T result = NULL;
 947
 948         pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
 949
 950         if (pacl == NULL) {
 951                 DEBUG(10, ("vfs_gpfs_getacl failed for %s with %s\n",
 952                            path, strerror(errno)));
 953                 if (errno == 0) {
 954                         errno = EINVAL;
 955                 }
 956                 goto done;
 957         }
 958
 959         if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
 960                 DEBUG(10, ("Got acl version %d, expected %d\n",
 961                            pacl->acl_version, GPFS_ACL_VERSION_POSIX));
 962                 errno = EINVAL;
 963                 goto done;
 964         }
 965
 966         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
 967                    pacl->acl_len, pacl->acl_level, pacl->acl_version,
 968                    pacl->acl_nace));
 969
 970         result = gpfs2smb_acl(pacl, mem_ctx);
 971         if (result != NULL) {
 972                 errno = 0;
 973         }
 974
 975  done:
 976
 977         if (pacl != NULL) {
 978                 talloc_free(pacl);
 979         }
 980         if (errno != 0) {
 981                 TALLOC_FREE(result);
 982         }
 983         return result;
 984 }
 985
 986 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
 987                                         files_struct *fsp,
 988                                         SMB_ACL_TYPE_T type,
 989                                         TALLOC_CTX *mem_ctx)
 990 {
 991         gpfs_aclType_t gpfs_type;
 992         struct gpfs_config_data *config;
 993
 994         SMB_VFS_HANDLE_GET_DATA(handle, config,
 995                                 struct gpfs_config_data,
 996                                 return NULL);
 997
 998         if (!config->acl) {
 999                 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, type, mem_ctx);
1000         }
1001
1002         switch(type) {
1003         case SMB_ACL_TYPE_ACCESS:
1004                 gpfs_type = GPFS_ACL_TYPE_ACCESS;
1005                 break;
1006         case SMB_ACL_TYPE_DEFAULT:
1007                 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
1008                 break;
1009         default:
1010                 DEBUG(0, ("Got invalid type: %d\n", type));
1011                 smb_panic("exiting");
1012         }
1013         return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
1014                                      gpfs_type, mem_ctx);
1015 }
1016
1017 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1018                                       files_struct *fsp,
1019                                       TALLOC_CTX *mem_ctx,
1020                                       char **blob_description,
1021                                       DATA_BLOB *blob)
1022 {
1023         struct gpfs_config_data *config;
1024         struct gpfs_opaque_acl *acl = NULL;
1025         DATA_BLOB aclblob;
1026         int result;
1027
1028         SMB_VFS_HANDLE_GET_DATA(handle, config,
1029                                 struct gpfs_config_data,
1030                                 return -1);
1031
1032         if (!config->acl) {
1033                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1034                                                         blob_description, blob);
1035         }
1036
1037         errno = 0;
1038         acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1039                                                 fsp->fsp_name->base_name,
1040                                                 true,
1041                                                 GPFS_ACL_TYPE_NFS4);
1042
1043         if (errno) {
1044                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1045                                         errno, strerror(errno)));
1046
1047                 /* EINVAL means POSIX ACL, bail out on other cases */
1048                 if (errno != EINVAL) {
1049                         return -1;
1050                 }
1051         }
1052
1053         if (acl != NULL) {
1054                 /*
1055                  * file has NFSv4 ACL
1056                  *
1057                  * we only need the actual ACL blob here
1058                  * acl_version will always be NFS4 because we asked
1059                  * for NFS4
1060                  * acl_type is only used for POSIX ACLs
1061                  */
1062                 aclblob.data = (uint8_t*) acl->acl_var_data;
1063                 aclblob.length = acl->acl_buffer_len;
1064
1065                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1066                 if (!*blob_description) {
1067                         talloc_free(acl);
1068                         errno = ENOMEM;
1069                         return -1;
1070                 }
1071
1072                 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1073                                                               aclblob, mem_ctx,
1074                                                               blob);
1075
1076                 talloc_free(acl);
1077                 return result;
1078         }
1079
1080         /* fall back to POSIX ACL */
1081         return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1082                                          blob_description, blob);
1083 }
1084
1085 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1086                                      SMB_ACL_TYPE_T type)
1087 {
1088         gpfs_aclLen_t len;
1089         struct gpfs_acl *result;
1090         int i;
1091
1092         DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1093
1094         len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1095                 sizeof(gpfs_ace_v1_t);
1096
1097         result = (struct gpfs_acl *)SMB_MALLOC(len);
1098         if (result == NULL) {
1099                 errno = ENOMEM;
1100                 return result;
1101         }
1102
1103         result->acl_len = len;
1104         result->acl_level = 0;
1105         result->acl_version = GPFS_ACL_VERSION_POSIX;
1106         result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1107                 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1108         result->acl_nace = pacl->count;
1109
1110         for (i=0; i<pacl->count; i++) {
1111                 const struct smb_acl_entry *ace = &pacl->acl[i];
1112                 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1113
1114                 DEBUG(10, ("Converting type %d perm %x\n",
1115                            (int)ace->a_type, (int)ace->a_perm));
1116
1117                 g_ace->ace_perm = 0;
1118
1119                 switch(ace->a_type) {
1120                 case SMB_ACL_USER:
1121                         g_ace->ace_type = GPFS_ACL_USER;
1122                         g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1123                         break;
1124                 case SMB_ACL_USER_OBJ:
1125                         g_ace->ace_type = GPFS_ACL_USER_OBJ;
1126                         g_ace->ace_perm |= ACL_PERM_CONTROL;
1127                         g_ace->ace_who = 0;
1128                         break;
1129                 case SMB_ACL_GROUP:
1130                         g_ace->ace_type = GPFS_ACL_GROUP;
1131                         g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1132                         break;
1133                 case SMB_ACL_GROUP_OBJ:
1134                         g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1135                         g_ace->ace_who = 0;
1136                         break;
1137                 case SMB_ACL_MASK:
1138                         g_ace->ace_type = GPFS_ACL_MASK;
1139                         g_ace->ace_perm = 0x8f;
1140                         g_ace->ace_who = 0;
1141                         break;
1142                 case SMB_ACL_OTHER:
1143                         g_ace->ace_type = GPFS_ACL_OTHER;
1144                         g_ace->ace_who = 0;
1145                         break;
1146                 default:
1147                         DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1148                         errno = EINVAL;
1149                         SAFE_FREE(result);
1150                         return NULL;
1151                 }
1152
1153                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1154                         ACL_PERM_READ : 0;
1155                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1156                         ACL_PERM_WRITE : 0;
1157                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1158                         ACL_PERM_EXECUTE : 0;
1159
1160                 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1161                               g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1162         }
1163
1164         return result;
1165 }
1166
1167 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1168                                   files_struct *fsp,
1169                                   SMB_ACL_TYPE_T type,
1170                                   SMB_ACL_T theacl)
1171 {
1172         struct gpfs_config_data *config;
1173         struct gpfs_acl *gpfs_acl = NULL;
1174         int result;
1175
1176         SMB_VFS_HANDLE_GET_DATA(handle, config,
1177                                 struct gpfs_config_data,
1178                                 return -1);
1179
1180         if (!config->acl) {
1181                 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, type, theacl);
1182         }
1183
1184         gpfs_acl = smb2gpfs_acl(theacl, type);
1185         if (gpfs_acl == NULL) {
1186                 return -1;
1187         }
1188
1189         /*
1190          * This is no longer a handle based call.
1191          */
1192         result = gpfswrap_putacl(fsp->fsp_name->base_name,
1193                                  GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA,
1194                                  gpfs_acl);
1195         SAFE_FREE(gpfs_acl);
1196         return result;
1197 }
1198
1199 static int gpfsacl_sys_acl_delete_def_fd(vfs_handle_struct *handle,
1200                                 files_struct *fsp)
1201 {
1202         struct gpfs_config_data *config;
1203
1204         SMB_VFS_HANDLE_GET_DATA(handle, config,
1205                                 struct gpfs_config_data,
1206                                 return -1);
1207
1208         if (!config->acl) {
1209                 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FD(handle, fsp);
1210         }
1211
1212         errno = ENOTSUP;
1213         return -1;
1214 }
1215
1216
1217 /*
1218  * Assumed: mode bits are shiftable and standard
1219  * Output: the new aceMask field for an smb nfs4 ace
1220  */
1221 static uint32_t gpfsacl_mask_filter(uint32_t aceType, uint32_t aceMask, uint32_t rwx)
1222 {
1223         const uint32_t posix_nfs4map[3] = {
1224                 SMB_ACE4_EXECUTE, /* execute */
1225                 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1226                 SMB_ACE4_READ_DATA /* read */
1227         };
1228         int     i;
1229         uint32_t        posix_mask = 0x01;
1230         uint32_t        posix_bit;
1231         uint32_t        nfs4_bits;
1232
1233         for(i=0; i<3; i++) {
1234                 nfs4_bits = posix_nfs4map[i];
1235                 posix_bit = rwx & posix_mask;
1236
1237                 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1238                         if (posix_bit)
1239                                 aceMask |= nfs4_bits;
1240                         else
1241                                 aceMask &= ~nfs4_bits;
1242                 } else {
1243                         /* add deny bits when suitable */
1244                         if (!posix_bit)
1245                                 aceMask |= nfs4_bits;
1246                         else
1247                                 aceMask &= ~nfs4_bits;
1248                 } /* other ace types are unexpected */
1249
1250                 posix_mask <<= 1;
1251         }
1252
1253         return aceMask;
1254 }
1255
1256 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1257                              const struct smb_filename *fname, mode_t mode)
1258 {
1259         char *path = fname->base_name;
1260         struct SMB4ACL_T *pacl = NULL;
1261         int     result;
1262         bool    haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1263         int     i;
1264         files_struct fake_fsp = { 0 }; /* TODO: rationalize parametrization */
1265         struct SMB4ACE_T *smbace;
1266         TALLOC_CTX *frame = talloc_stackframe();
1267
1268         DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1269
1270         result = gpfs_get_nfs4_acl(frame, path, &pacl);
1271         if (result) {
1272                 TALLOC_FREE(frame);
1273                 return result;
1274         }
1275
1276         if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1277                 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1278         }
1279
1280         for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1281                 SMB_ACE4PROP_T  *ace = smb_get_ace4(smbace);
1282                 uint32_t        specid = ace->who.special_id;
1283
1284                 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1285                     ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1286                     specid <= SMB_ACE4_WHO_EVERYONE) {
1287
1288                         uint32_t newMask;
1289
1290                         if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1291                                 haveAllowEntry[specid] = True;
1292
1293                         /* mode >> 6 for @owner, mode >> 3 for @group,
1294                          * mode >> 0 for @everyone */
1295                         newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1296                                                       mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1297                         if (ace->aceMask!=newMask) {
1298                                 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1299                                            path, ace->aceMask, newMask, specid));
1300                         }
1301                         ace->aceMask = newMask;
1302                 }
1303         }
1304
1305         /* make sure we have at least ALLOW entries
1306          * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1307          * - if necessary
1308          */
1309         for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1310                 SMB_ACE4PROP_T ace = { 0 };
1311
1312                 if (haveAllowEntry[i]==True)
1313                         continue;
1314
1315                 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1316                 ace.flags |= SMB_ACE4_ID_SPECIAL;
1317                 ace.who.special_id = i;
1318
1319                 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1320                         ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1321
1322                 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1323                                                   mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1324
1325                 /* don't add unnecessary aces */
1326                 if (!ace.aceMask)
1327                         continue;
1328
1329                 /* we add it to the END - as windows expects allow aces */
1330                 smb_add_ace4(pacl, &ace);
1331                 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1332                            path, mode, i, ace.aceMask));
1333         }
1334
1335         /* don't add complementary DENY ACEs here */
1336         fake_fsp.fsp_name = synthetic_smb_fname(frame,
1337                                                 path,
1338                                                 NULL,
1339                                                 NULL,
1340                                                 fname->twrp,
1341                                                 0);
1342         if (fake_fsp.fsp_name == NULL) {
1343                 errno = ENOMEM;
1344                 TALLOC_FREE(frame);
1345                 return -1;
1346         }
1347         /* put the acl */
1348         if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1349                 TALLOC_FREE(frame);
1350                 return -1;
1351         }
1352
1353         TALLOC_FREE(frame);
1354         return 0; /* ok for [f]chmod */
1355 }
1356
1357 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1358 {
1359                  SMB_STRUCT_STAT st;
1360                  int rc;
1361
1362                  if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1363                          return -1;
1364                  }
1365
1366                  /* avoid chmod() if possible, to preserve acls */
1367                  if ((st.st_ex_mode & ~S_IFMT) == mode) {
1368                          return 0;
1369                  }
1370
1371                  rc = gpfsacl_emu_chmod(handle, fsp->fsp_name,
1372                                         mode);
1373                  if (rc == 1)
1374                          return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1375                  return rc;
1376 }
1377
1378 static uint32_t vfs_gpfs_winattrs_to_dosmode(unsigned int winattrs)
1379 {
1380         uint32_t dosmode = 0;
1381
1382         if (winattrs & GPFS_WINATTR_ARCHIVE){
1383                 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1384         }
1385         if (winattrs & GPFS_WINATTR_HIDDEN){
1386                 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1387         }
1388         if (winattrs & GPFS_WINATTR_SYSTEM){
1389                 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1390         }
1391         if (winattrs & GPFS_WINATTR_READONLY){
1392                 dosmode |= FILE_ATTRIBUTE_READONLY;
1393         }
1394         if (winattrs & GPFS_WINATTR_SPARSE_FILE) {
1395                 dosmode |= FILE_ATTRIBUTE_SPARSE;
1396         }
1397         if (winattrs & GPFS_WINATTR_OFFLINE) {
1398                 dosmode |= FILE_ATTRIBUTE_OFFLINE;
1399         }
1400
1401         return dosmode;
1402 }
1403
1404 static unsigned int vfs_gpfs_dosmode_to_winattrs(uint32_t dosmode)
1405 {
1406         unsigned int winattrs = 0;
1407
1408         if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1409                 winattrs |= GPFS_WINATTR_ARCHIVE;
1410         }
1411         if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1412                 winattrs |= GPFS_WINATTR_HIDDEN;
1413         }
1414         if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1415                 winattrs |= GPFS_WINATTR_SYSTEM;
1416         }
1417         if (dosmode & FILE_ATTRIBUTE_READONLY){
1418                 winattrs |= GPFS_WINATTR_READONLY;
1419         }
1420         if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1421                 winattrs |= GPFS_WINATTR_SPARSE_FILE;
1422         }
1423         if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
1424                 winattrs |= GPFS_WINATTR_OFFLINE;
1425         }
1426
1427         return winattrs;
1428 }
1429
1430 static NTSTATUS vfs_gpfs_get_file_id(struct gpfs_iattr64 *iattr,
1431                                      uint64_t *fileid)
1432 {
1433         uint8_t input[sizeof(gpfs_ino64_t) +
1434                       sizeof(gpfs_gen64_t) +
1435                       sizeof(gpfs_snapid64_t)];
1436         uint8_t digest[gnutls_hash_get_len(GNUTLS_DIG_SHA1)];
1437         int rc;
1438
1439         DBG_DEBUG("ia_inode 0x%llx, ia_gen 0x%llx, ia_modsnapid 0x%llx\n",
1440                   iattr->ia_inode, iattr->ia_gen, iattr->ia_modsnapid);
1441
1442         SBVAL(input,
1443               0, iattr->ia_inode);
1444         SBVAL(input,
1445               sizeof(gpfs_ino64_t), iattr->ia_gen);
1446         SBVAL(input,
1447               sizeof(gpfs_ino64_t) + sizeof(gpfs_gen64_t), iattr->ia_modsnapid);
1448
1449         GNUTLS_FIPS140_SET_LAX_MODE();
1450         rc = gnutls_hash_fast(GNUTLS_DIG_SHA1, input, sizeof(input), &digest);
1451         GNUTLS_FIPS140_SET_STRICT_MODE();
1452
1453         if (rc != 0) {
1454                 return gnutls_error_to_ntstatus(rc,
1455                                                 NT_STATUS_HASH_NOT_SUPPORTED);
1456         }
1457
1458         memcpy(fileid, &digest, sizeof(*fileid));
1459         DBG_DEBUG("file_id 0x%" PRIx64 "\n", *fileid);
1460
1461         return NT_STATUS_OK;
1462 }
1463
1464 static struct timespec gpfs_timestruc64_to_timespec(struct gpfs_timestruc64 g)
1465 {
1466         return (struct timespec) { .tv_sec = g.tv_sec, .tv_nsec = g.tv_nsec };
1467 }
1468
1469 static NTSTATUS vfs_gpfs_fget_dos_attributes(struct vfs_handle_struct *handle,
1470                                              struct files_struct *fsp,
1471                                              uint32_t *dosmode)
1472 {
1473         struct gpfs_config_data *config;
1474         struct gpfs_iattr64 iattr = { };
1475         unsigned int litemask;
1476         struct timespec ts;
1477         uint64_t file_id;
1478         NTSTATUS status;
1479         int ret;
1480
1481         SMB_VFS_HANDLE_GET_DATA(handle, config,
1482                                 struct gpfs_config_data,
1483                                 return NT_STATUS_INTERNAL_ERROR);
1484
1485         if (!config->winattr) {
1486                 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1487         }
1488
1489         ret = gpfswrap_fstat_x(fsp_get_pathref_fd(fsp), &litemask, &iattr, sizeof(iattr));
1490         if (ret == -1 && errno == ENOSYS) {
1491                 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1492         }
1493
1494         if (ret == -1 && errno == EACCES) {
1495                 int saved_errno = 0;
1496
1497                 /*
1498                  * According to MS-FSA 2.1.5.1.2.1 "Algorithm to Check Access to
1499                  * an Existing File" FILE_LIST_DIRECTORY on a directory implies
1500                  * FILE_READ_ATTRIBUTES for directory entries. Being able to
1501                  * open a file implies FILE_LIST_DIRECTORY.
1502                  */
1503
1504                 set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1505
1506                 ret = gpfswrap_fstat_x(fsp_get_pathref_fd(fsp), &litemask,
1507                                        &iattr, sizeof(iattr));
1508                 if (ret == -1) {
1509                         saved_errno = errno;
1510                 }
1511
1512                 drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1513
1514                 if (saved_errno != 0) {
1515                         errno = saved_errno;
1516                 }
1517         }
1518
1519         if (ret == -1) {
1520                 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1521                             fsp->fsp_name->base_name, strerror(errno));
1522                 return map_nt_error_from_unix(errno);
1523         }
1524
1525         ZERO_STRUCT(file_id);
1526         status = vfs_gpfs_get_file_id(&iattr, &file_id);
1527         if (!NT_STATUS_IS_OK(status)) {
1528                 return status;
1529         }
1530
1531         ts = gpfs_timestruc64_to_timespec(iattr.ia_createtime);
1532
1533         *dosmode |= vfs_gpfs_winattrs_to_dosmode(iattr.ia_winflags);
1534         update_stat_ex_create_time(&fsp->fsp_name->st, ts);
1535         update_stat_ex_file_id(&fsp->fsp_name->st, file_id);
1536
1537         return NT_STATUS_OK;
1538 }
1539
1540 static NTSTATUS vfs_gpfs_fset_dos_attributes(struct vfs_handle_struct *handle,
1541                                              struct files_struct *fsp,
1542                                              uint32_t dosmode)
1543 {
1544         struct gpfs_config_data *config;
1545         struct gpfs_winattr attrs = { };
1546         int ret;
1547
1548         SMB_VFS_HANDLE_GET_DATA(handle, config,
1549                                 struct gpfs_config_data,
1550                                 return NT_STATUS_INTERNAL_ERROR);
1551
1552         if (!config->winattr) {
1553                 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1554         }
1555
1556         attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1557         ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
1558                                     GPFS_WINATTR_SET_ATTRS, &attrs);
1559
1560         if (ret == -1 && errno == ENOSYS) {
1561                 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1562         }
1563
1564         if (ret == -1) {
1565                 DBG_WARNING("Setting winattrs failed for %s: %s\n",
1566                             fsp->fsp_name->base_name, strerror(errno));
1567                 return map_nt_error_from_unix(errno);
1568         }
1569
1570         return NT_STATUS_OK;
1571 }
1572
1573 static int stat_with_capability(struct vfs_handle_struct *handle,
1574                                 struct smb_filename *smb_fname, int flag)
1575 {
1576         int fd = -1;
1577         NTSTATUS status;
1578         struct smb_filename *dir_name = NULL;
1579         struct smb_filename *rel_name = NULL;
1580         struct stat st;
1581         int ret = -1;
1582
1583         status = SMB_VFS_PARENT_PATHNAME(handle->conn,
1584                                          talloc_tos(),
1585                                          smb_fname,
1586                                          &dir_name,
1587                                          &rel_name);
1588         if (!NT_STATUS_IS_OK(status)) {
1589                 errno = map_errno_from_nt_status(status);
1590                 return -1;
1591         }
1592
1593         fd = open(dir_name->base_name, O_RDONLY, 0);
1594         if (fd == -1) {
1595                 TALLOC_FREE(dir_name);
1596                 return -1;
1597         }
1598
1599         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1600         ret = fstatat(fd, rel_name->base_name, &st, flag);
1601         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1602
1603         TALLOC_FREE(dir_name);
1604         close(fd);
1605
1606         if (ret == 0) {
1607                 init_stat_ex_from_stat(
1608                         &smb_fname->st, &st,
1609                         lp_fake_directory_create_times(SNUM(handle->conn)));
1610         }
1611
1612         return ret;
1613 }
1614
1615 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1616                          struct smb_filename *smb_fname)
1617 {
1618         int ret;
1619
1620         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1621         if (ret == -1 && errno == EACCES) {
1622                 DEBUG(10, ("Trying stat with capability for %s\n",
1623                            smb_fname->base_name));
1624                 ret = stat_with_capability(handle, smb_fname, 0);
1625         }
1626         return ret;
1627 }
1628
1629 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1630                           struct smb_filename *smb_fname)
1631 {
1632         int ret;
1633
1634         ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1635         if (ret == -1 && errno == EACCES) {
1636                 DEBUG(10, ("Trying lstat with capability for %s\n",
1637                            smb_fname->base_name));
1638                 ret = stat_with_capability(handle, smb_fname,
1639                                            AT_SYMLINK_NOFOLLOW);
1640         }
1641         return ret;
1642 }
1643
1644 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1645                                   int idx, int *flags)
1646 {
1647         if (!is_omit_timespec(&ts)) {
1648                 *flags |= 1 << idx;
1649                 gt[idx].tv_sec = ts.tv_sec;
1650                 gt[idx].tv_nsec = ts.tv_nsec;
1651                 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1652         }
1653 }
1654
1655 static int smbd_gpfs_set_times(int fd, char *path, struct smb_file_time *ft)
1656 {
1657         gpfs_timestruc_t gpfs_times[4];
1658         int flags = 0;
1659         int rc;
1660
1661         ZERO_ARRAY(gpfs_times);
1662         timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1663         timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1664         /* No good mapping from LastChangeTime to ctime, not storing */
1665         timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1666
1667         if (!flags) {
1668                 DBG_DEBUG("nothing to do, return to avoid EINVAL\n");
1669                 return 0;
1670         }
1671
1672         rc = gpfswrap_set_times(fd, flags, gpfs_times);
1673
1674         if (rc != 0 && errno != ENOSYS) {
1675                 DBG_WARNING("gpfs_set_times() returned with error %s for %s\n",
1676                             strerror(errno),
1677                             path);
1678         }
1679
1680         return rc;
1681 }
1682
1683 static int vfs_gpfs_fntimes(struct vfs_handle_struct *handle,
1684                 files_struct *fsp,
1685                 struct smb_file_time *ft)
1686 {
1687
1688         struct gpfs_winattr attrs;
1689         int ret;
1690         struct gpfs_config_data *config;
1691
1692         SMB_VFS_HANDLE_GET_DATA(handle,
1693                                 config,
1694                                 struct gpfs_config_data,
1695                                 return -1);
1696
1697         /* Try to use gpfs_set_times if it is enabled and available */
1698         if (config->settimes) {
1699                 ret = smbd_gpfs_set_times(fsp_get_io_fd(fsp),
1700                                           fsp->fsp_name->base_name,
1701                                           ft);
1702                 if (ret == 0 || (ret == -1 && errno != ENOSYS)) {
1703                         return ret;
1704                 }
1705         }
1706
1707         DBG_DEBUG("gpfs_set_times() not available or disabled, "
1708                   "use ntimes and winattr\n");
1709
1710         ret = SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
1711         if (ret == -1) {
1712                 /* don't complain if access was denied */
1713                 if (errno != EPERM && errno != EACCES) {
1714                         DBG_WARNING("SMB_VFS_NEXT_FNTIMES failed: %s",
1715                                     strerror(errno));
1716                 }
1717                 return -1;
1718         }
1719
1720         if (is_omit_timespec(&ft->create_time)) {
1721                 DBG_DEBUG("Create Time is NULL\n");
1722                 return 0;
1723         }
1724
1725         if (!config->winattr) {
1726                 return 0;
1727         }
1728
1729         attrs.winAttrs = 0;
1730         attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1731         attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1732
1733         ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
1734                                     GPFS_WINATTR_SET_CREATION_TIME,
1735                                     &attrs);
1736         if (ret == -1 && errno != ENOSYS) {
1737                 DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1738                 return -1;
1739         }
1740
1741         return 0;
1742 }
1743
1744 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1745                               struct files_struct *fsp, uint32_t mode,
1746                               off_t offset, off_t len)
1747 {
1748         if (mode == (VFS_FALLOCATE_FL_PUNCH_HOLE|VFS_FALLOCATE_FL_KEEP_SIZE) &&
1749             !fsp->fsp_flags.is_sparse &&
1750             lp_strict_allocate(SNUM(fsp->conn))) {
1751                 /*
1752                  * This is from a ZERO_DATA request on a non-sparse
1753                  * file. GPFS does not support FL_KEEP_SIZE and thus
1754                  * cannot fill the whole again in the subsequent
1755                  * fallocate(FL_KEEP_SIZE). Deny this FL_PUNCH_HOLE
1756                  * call to not end up with a hole in a non-sparse
1757                  * file.
1758                  */
1759                 errno = ENOTSUP;
1760                 return -1;
1761         }
1762
1763         return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
1764 }
1765
1766 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1767                                 off_t len)
1768 {
1769         int result;
1770         struct gpfs_config_data *config;
1771
1772         SMB_VFS_HANDLE_GET_DATA(handle, config,
1773                                 struct gpfs_config_data,
1774                                 return -1);
1775
1776         if (!config->ftruncate) {
1777                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1778         }
1779
1780         result = gpfswrap_ftruncate(fsp_get_io_fd(fsp), len);
1781         if ((result == -1) && (errno == ENOSYS)) {
1782                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1783         }
1784         return result;
1785 }
1786
1787 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1788                                 const struct smb_filename *fname,
1789                                 SMB_STRUCT_STAT *sbuf)
1790 {
1791         struct gpfs_winattr attrs;
1792         struct gpfs_config_data *config;
1793         int ret;
1794
1795         SMB_VFS_HANDLE_GET_DATA(handle, config,
1796                                 struct gpfs_config_data,
1797                                 return false);
1798
1799         if (!config->winattr) {
1800                 return false;
1801         }
1802
1803         ret = gpfswrap_get_winattrs_path(fname->base_name, &attrs);
1804         if (ret == -1) {
1805                 return false;
1806         }
1807
1808         if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1809                 DBG_DEBUG("%s is offline\n", fname->base_name);
1810                 return true;
1811         }
1812
1813         DBG_DEBUG("%s is online\n", fname->base_name);
1814         return false;
1815 }
1816
1817 static bool vfs_gpfs_fsp_is_offline(struct vfs_handle_struct *handle,
1818                                     struct files_struct *fsp)
1819 {
1820         struct gpfs_fsp_extension *ext;
1821
1822         ext = VFS_FETCH_FSP_EXTENSION(handle, fsp);
1823         if (ext == NULL) {
1824                 /*
1825                  * Something bad happened, always ask.
1826                  */
1827                 return vfs_gpfs_is_offline(handle, fsp->fsp_name,
1828                                            &fsp->fsp_name->st);
1829         }
1830
1831         if (ext->offline) {
1832                 /*
1833                  * As long as it's offline, ask.
1834                  */
1835                 ext->offline = vfs_gpfs_is_offline(handle, fsp->fsp_name,
1836                                                    &fsp->fsp_name->st);
1837         }
1838
1839         return ext->offline;
1840 }
1841
1842 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1843                                struct files_struct *fsp)
1844 {
1845         return vfs_gpfs_fsp_is_offline(handle, fsp);
1846 }
1847
1848 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1849                                  files_struct *fsp, const DATA_BLOB *hdr,
1850                                  off_t offset, size_t n)
1851 {
1852         if (vfs_gpfs_fsp_is_offline(handle, fsp)) {
1853                 errno = ENOSYS;
1854                 return -1;
1855         }
1856         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
1857 }
1858
1859 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
1860                             const char *service, const char *user)
1861 {
1862         struct gpfs_config_data *config;
1863         int ret;
1864         bool check_fstype;
1865
1866         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
1867         if (ret < 0) {
1868                 return ret;
1869         }
1870
1871         gpfswrap_lib_init(0);
1872
1873         config = talloc_zero(handle->conn, struct gpfs_config_data);
1874         if (!config) {
1875                 DEBUG(0, ("talloc_zero() failed\n"));
1876                 errno = ENOMEM;
1877                 return -1;
1878         }
1879
1880         check_fstype = lp_parm_bool(SNUM(handle->conn), "gpfs",
1881                                     "check_fstype", true);
1882
1883         if (check_fstype && !IS_IPC(handle->conn)) {
1884                 const char *connectpath = handle->conn->connectpath;
1885                 struct statfs buf = { 0 };
1886
1887                 ret = statfs(connectpath, &buf);
1888                 if (ret != 0) {
1889                         DBG_ERR("statfs failed for share %s at path %s: %s\n",
1890                                 service, connectpath, strerror(errno));
1891                         TALLOC_FREE(config);
1892                         return ret;
1893                 }
1894
1895                 if (buf.f_type != GPFS_SUPER_MAGIC) {
1896                         DBG_ERR("SMB share %s, path %s not in GPFS file system."
1897                                 " statfs magic: 0x%jx\n",
1898                                 service,
1899                                 connectpath,
1900                                 (uintmax_t)buf.f_type);
1901                         errno = EINVAL;
1902                         TALLOC_FREE(config);
1903                         return -1;
1904                 }
1905         }
1906
1907         ret = smbacl4_get_vfs_params(handle->conn, &config->nfs4_params);
1908         if (ret < 0) {
1909                 TALLOC_FREE(config);
1910                 return ret;
1911         }
1912
1913         config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1914                                         "sharemodes", true);
1915
1916         config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
1917                                         "leases", true);
1918
1919         config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
1920                                    "hsm", false);
1921
1922         config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
1923                                       "syncio", false);
1924
1925         config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
1926                                        "winattr", false);
1927
1928         config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
1929                                          "ftruncate", true);
1930
1931         config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
1932                                                "getrealfilename", true);
1933
1934         config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
1935                                           "dfreequota", false);
1936
1937         config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
1938
1939         config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1940                                         "settimes", true);
1941         config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
1942                                        "recalls", true);
1943
1944         SMB_VFS_HANDLE_SET_DATA(handle, config,
1945                                 NULL, struct gpfs_config_data,
1946                                 return -1);
1947
1948         if (config->leases) {
1949                 /*
1950                  * GPFS lease code is based on kernel oplock code
1951                  * so make sure it is turned on
1952                  */
1953                 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
1954                         DEBUG(5, ("Enabling kernel oplocks for "
1955                                   "gpfs:leases to work\n"));
1956                         lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
1957                                         "true");
1958                 }
1959
1960                 /*
1961                  * as the kernel does not properly support Level II oplocks
1962                  * and GPFS leases code is based on kernel infrastructure, we
1963                  * need to turn off Level II oplocks if gpfs:leases is enabled
1964                  */
1965                 if (lp_level2_oplocks(SNUM(handle->conn))) {
1966                         DEBUG(5, ("gpfs:leases are enabled, disabling "
1967                                   "Level II oplocks\n"));
1968                         lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
1969                                         "false");
1970                 }
1971         }
1972
1973         /*
1974          * Unless we have an async implementation of get_dos_attributes turn
1975          * this off.
1976          */
1977         lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
1978
1979         return 0;
1980 }
1981
1982 static int get_gpfs_quota(const char *pathname, int type, int id,
1983                           struct gpfs_quotaInfo *qi)
1984 {
1985         int ret;
1986
1987         ret = gpfswrap_quotactl(pathname, GPFS_QCMD(Q_GETQUOTA, type), id, qi);
1988
1989         if (ret) {
1990                 if (errno == GPFS_E_NO_QUOTA_INST) {
1991                         DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
1992                 } else if (errno != ENOSYS) {
1993                         DEBUG(0, ("Get quota failed, type %d, id, %d, "
1994                                   "errno %d.\n", type, id, errno));
1995                 }
1996
1997                 return ret;
1998         }
1999
2000         DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2001                    type, id, qi->blockUsage, qi->blockHardLimit,
2002                    qi->blockSoftLimit, qi->blockGraceTime));
2003
2004         return ret;
2005 }
2006
2007 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2008                                      uint64_t *dfree, uint64_t *dsize)
2009 {
2010         uint64_t usage, limit;
2011
2012         /*
2013          * The quota reporting is done in units of 1024 byte blocks, but
2014          * sys_fsusage uses units of 512 byte blocks, adjust the block number
2015          * accordingly. Also filter possibly negative usage counts from gpfs.
2016          */
2017         usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2018         limit = (uint64_t)qi.blockHardLimit * 2;
2019
2020         /*
2021          * When the grace time for the exceeded soft block quota has been
2022          * exceeded, the soft block quota becomes an additional hard limit.
2023          */
2024         if (qi.blockSoftLimit &&
2025             qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2026                 /* report disk as full */
2027                 *dfree = 0;
2028                 *dsize = MIN(*dsize, usage);
2029         }
2030
2031         if (!qi.blockHardLimit)
2032                 return;
2033
2034         if (usage >= limit) {
2035                 /* report disk as full */
2036                 *dfree = 0;
2037                 *dsize = MIN(*dsize, usage);
2038
2039         } else {
2040                 /* limit has not been reached, determine "free space" */
2041                 *dfree = MIN(*dfree, limit - usage);
2042                 *dsize = MIN(*dsize, limit);
2043         }
2044 }
2045
2046 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle,
2047                                 const struct smb_filename *smb_fname,
2048                                 uint64_t *bsize,
2049                                 uint64_t *dfree,
2050                                 uint64_t *dsize)
2051 {
2052         struct security_unix_token *utok;
2053         struct gpfs_quotaInfo qi_user = { 0 }, qi_group = { 0 };
2054         struct gpfs_config_data *config;
2055         int err;
2056         time_t cur_time;
2057
2058         SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2059                                 return (uint64_t)-1);
2060         if (!config->dfreequota) {
2061                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2062                                               bsize, dfree, dsize);
2063         }
2064
2065         err = sys_fsusage(smb_fname->base_name, dfree, dsize);
2066         if (err) {
2067                 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2068                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2069                                               bsize, dfree, dsize);
2070         }
2071
2072         /* sys_fsusage returns units of 512 bytes */
2073         *bsize = 512;
2074
2075         DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2076                    (unsigned long long)*dfree, (unsigned long long)*dsize));
2077
2078         utok = handle->conn->session_info->unix_token;
2079
2080         err = get_gpfs_quota(smb_fname->base_name,
2081                         GPFS_USRQUOTA, utok->uid, &qi_user);
2082         if (err) {
2083                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2084                                               bsize, dfree, dsize);
2085         }
2086
2087         /*
2088          * If new files created under this folder get this folder's
2089          * GID, then available space is governed by the quota of the
2090          * folder's GID, not the primary group of the creating user.
2091          */
2092         if (VALID_STAT(smb_fname->st) &&
2093             S_ISDIR(smb_fname->st.st_ex_mode) &&
2094             smb_fname->st.st_ex_mode & S_ISGID) {
2095                 become_root();
2096                 err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
2097                                      smb_fname->st.st_ex_gid, &qi_group);
2098                 unbecome_root();
2099
2100         } else {
2101                 err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
2102                                      utok->gid, &qi_group);
2103         }
2104
2105         if (err) {
2106                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2107                                               bsize, dfree, dsize);
2108         }
2109
2110         cur_time = time(NULL);
2111
2112         /* Adjust free space and size according to quota limits. */
2113         vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2114         vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2115
2116         return *dfree / 2;
2117 }
2118
2119 static int vfs_gpfs_get_quota(vfs_handle_struct *handle,
2120                                 const struct smb_filename *smb_fname,
2121                                 enum SMB_QUOTA_TYPE qtype,
2122                                 unid_t id,
2123                                 SMB_DISK_QUOTA *dq)
2124 {
2125         switch(qtype) {
2126                 /*
2127                  * User/group quota are being used for disk-free
2128                  * determination, which in this module is done directly
2129                  * by the disk-free function. It's important that this
2130                  * module does not return wrong quota values by mistake,
2131                  * which would modify the correct values set by disk-free.
2132                  * User/group quota are also being used for processing
2133                  * NT_TRANSACT_GET_USER_QUOTA in smb1 protocol, which is
2134                  * currently not supported by this module.
2135                  */
2136                 case SMB_USER_QUOTA_TYPE:
2137                 case SMB_GROUP_QUOTA_TYPE:
2138                         errno = ENOSYS;
2139                         return -1;
2140                 default:
2141                         return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
2142                                         qtype, id, dq);
2143         }
2144 }
2145
2146 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2147                                       enum timestamp_set_resolution *p_ts_res)
2148 {
2149         struct gpfs_config_data *config;
2150         uint32_t next;
2151
2152         next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2153
2154         SMB_VFS_HANDLE_GET_DATA(handle, config,
2155                                 struct gpfs_config_data,
2156                                 return next);
2157
2158         if (config->hsm) {
2159                 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2160         }
2161         return next;
2162 }
2163
2164 static int vfs_gpfs_openat(struct vfs_handle_struct *handle,
2165                            const struct files_struct *dirfsp,
2166                            const struct smb_filename *smb_fname,
2167                            files_struct *fsp,
2168                            int flags,
2169                            mode_t mode)
2170 {
2171         struct gpfs_config_data *config = NULL;
2172         struct gpfs_fsp_extension *ext = NULL;
2173         int ret;
2174
2175         SMB_VFS_HANDLE_GET_DATA(handle, config,
2176                                 struct gpfs_config_data,
2177                                 return -1);
2178
2179         if (config->hsm && !config->recalls &&
2180             vfs_gpfs_fsp_is_offline(handle, fsp))
2181         {
2182                 DBG_DEBUG("Refusing access to offline file %s\n",
2183                           fsp_str_dbg(fsp));
2184                 errno = EACCES;
2185                 return -1;
2186         }
2187
2188         if (config->syncio) {
2189                 flags |= O_SYNC;
2190         }
2191
2192         ext = VFS_ADD_FSP_EXTENSION(handle, fsp, struct gpfs_fsp_extension,
2193                                     NULL);
2194         if (ext == NULL) {
2195                 errno = ENOMEM;
2196                 return -1;
2197         }
2198
2199         /*
2200          * Assume the file is offline until gpfs tells us it's online.
2201          */
2202         *ext = (struct gpfs_fsp_extension) { .offline = true };
2203
2204         ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
2205         if (ret == -1) {
2206                 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
2207         }
2208         return ret;
2209 }
2210
2211 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2212                               void *data, size_t n, off_t offset)
2213 {
2214         ssize_t ret;
2215         bool was_offline;
2216
2217         was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2218
2219         ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2220
2221         if ((ret != -1) && was_offline) {
2222                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2223                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2224                              fsp->fsp_name->base_name);
2225         }
2226
2227         return ret;
2228 }
2229
2230 struct vfs_gpfs_pread_state {
2231         struct files_struct *fsp;
2232         ssize_t ret;
2233         bool was_offline;
2234         struct vfs_aio_state vfs_aio_state;
2235 };
2236
2237 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2238
2239 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2240                                               TALLOC_CTX *mem_ctx,
2241                                               struct tevent_context *ev,
2242                                               struct files_struct *fsp,
2243                                               void *data, size_t n,
2244                                               off_t offset)
2245 {
2246         struct tevent_req *req, *subreq;
2247         struct vfs_gpfs_pread_state *state;
2248
2249         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2250         if (req == NULL) {
2251                 return NULL;
2252         }
2253         state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2254         state->fsp = fsp;
2255         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2256                                          n, offset);
2257         if (tevent_req_nomem(subreq, req)) {
2258                 return tevent_req_post(req, ev);
2259         }
2260         tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2261         return req;
2262 }
2263
2264 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2265 {
2266         struct tevent_req *req = tevent_req_callback_data(
2267                 subreq, struct tevent_req);
2268         struct vfs_gpfs_pread_state *state = tevent_req_data(
2269                 req, struct vfs_gpfs_pread_state);
2270
2271         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
2272         TALLOC_FREE(subreq);
2273         tevent_req_done(req);
2274 }
2275
2276 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req,
2277                                    struct vfs_aio_state *vfs_aio_state)
2278 {
2279         struct vfs_gpfs_pread_state *state = tevent_req_data(
2280                 req, struct vfs_gpfs_pread_state);
2281         struct files_struct *fsp = state->fsp;
2282
2283         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2284                 return -1;
2285         }
2286         *vfs_aio_state = state->vfs_aio_state;
2287
2288         if ((state->ret != -1) && state->was_offline) {
2289                 DEBUG(10, ("sending notify\n"));
2290                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2291                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2292                              fsp->fsp_name->base_name);
2293         }
2294
2295         return state->ret;
2296 }
2297
2298 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2299                                const void *data, size_t n, off_t offset)
2300 {
2301         ssize_t ret;
2302         bool was_offline;
2303
2304         was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2305
2306         ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2307
2308         if ((ret != -1) && was_offline) {
2309                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2310                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2311                              fsp->fsp_name->base_name);
2312         }
2313
2314         return ret;
2315 }
2316
2317 struct vfs_gpfs_pwrite_state {
2318         struct files_struct *fsp;
2319         ssize_t ret;
2320         bool was_offline;
2321         struct vfs_aio_state vfs_aio_state;
2322 };
2323
2324 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2325
2326 static struct tevent_req *vfs_gpfs_pwrite_send(
2327         struct vfs_handle_struct *handle,
2328         TALLOC_CTX *mem_ctx,
2329         struct tevent_context *ev,
2330         struct files_struct *fsp,
2331         const void *data, size_t n,
2332         off_t offset)
2333 {
2334         struct tevent_req *req, *subreq;
2335         struct vfs_gpfs_pwrite_state *state;
2336
2337         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2338         if (req == NULL) {
2339                 return NULL;
2340         }
2341         state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2342         state->fsp = fsp;
2343         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2344                                          n, offset);
2345         if (tevent_req_nomem(subreq, req)) {
2346                 return tevent_req_post(req, ev);
2347         }
2348         tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2349         return req;
2350 }
2351
2352 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2353 {
2354         struct tevent_req *req = tevent_req_callback_data(
2355                 subreq, struct tevent_req);
2356         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2357                 req, struct vfs_gpfs_pwrite_state);
2358
2359         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
2360         TALLOC_FREE(subreq);
2361         tevent_req_done(req);
2362 }
2363
2364 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req,
2365                                     struct vfs_aio_state *vfs_aio_state)
2366 {
2367         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2368                 req, struct vfs_gpfs_pwrite_state);
2369         struct files_struct *fsp = state->fsp;
2370
2371         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2372                 return -1;
2373         }
2374         *vfs_aio_state = state->vfs_aio_state;
2375
2376         if ((state->ret != -1) && state->was_offline) {
2377                 DEBUG(10, ("sending notify\n"));
2378                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2379                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2380                              fsp->fsp_name->base_name);
2381         }
2382
2383         return state->ret;
2384 }
2385
2386
2387 static struct vfs_fn_pointers vfs_gpfs_fns = {
2388         .connect_fn = vfs_gpfs_connect,
2389         .disk_free_fn = vfs_gpfs_disk_free,
2390         .get_quota_fn = vfs_gpfs_get_quota,
2391         .fs_capabilities_fn = vfs_gpfs_capabilities,
2392         .kernel_flock_fn = vfs_gpfs_kernel_flock,
2393         .linux_setlease_fn = vfs_gpfs_setlease,
2394         .get_real_filename_fn = vfs_gpfs_get_real_filename,
2395         .get_dos_attributes_send_fn = vfs_not_implemented_get_dos_attributes_send,
2396         .get_dos_attributes_recv_fn = vfs_not_implemented_get_dos_attributes_recv,
2397         .fget_dos_attributes_fn = vfs_gpfs_fget_dos_attributes,
2398         .fset_dos_attributes_fn = vfs_gpfs_fset_dos_attributes,
2399         .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2400         .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2401         .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2402         .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2403         .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2404         .sys_acl_delete_def_fd_fn = gpfsacl_sys_acl_delete_def_fd,
2405         .fchmod_fn = vfs_gpfs_fchmod,
2406         .close_fn = vfs_gpfs_close,
2407         .stat_fn = vfs_gpfs_stat,
2408         .lstat_fn = vfs_gpfs_lstat,
2409         .fntimes_fn = vfs_gpfs_fntimes,
2410         .aio_force_fn = vfs_gpfs_aio_force,
2411         .sendfile_fn = vfs_gpfs_sendfile,
2412         .fallocate_fn = vfs_gpfs_fallocate,
2413         .openat_fn = vfs_gpfs_openat,
2414         .pread_fn = vfs_gpfs_pread,
2415         .pread_send_fn = vfs_gpfs_pread_send,
2416         .pread_recv_fn = vfs_gpfs_pread_recv,
2417         .pwrite_fn = vfs_gpfs_pwrite,
2418         .pwrite_send_fn = vfs_gpfs_pwrite_send,
2419         .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2420         .ftruncate_fn = vfs_gpfs_ftruncate
2421 };
2422
2423 static_decl_vfs;
2424 NTSTATUS vfs_gpfs_init(TALLOC_CTX *ctx)
2425 {
2426         int ret;
2427
2428         ret = gpfswrap_init();
2429         if (ret != 0) {
2430                 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2431         }
2432
2433         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2434                                 &vfs_gpfs_fns);
2435 }