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         struct {
  59                 bool gpfs_fstat_x;
  60         } pathref_ok;
  61 };
  62
  63 struct gpfs_fsp_extension {
  64         bool offline;
  65 };
  66
  67 static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
  68 {
  69         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
  70                 return gacl->v4Level1.acl_flags;
  71         }
  72         return 0;
  73 }
  74
  75 static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
  76 {
  77         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
  78                 return &gacl->v4Level1.ace_v4[i];
  79         }
  80         return &gacl->ace_v4[i];
  81 }
  82
  83 static unsigned int vfs_gpfs_access_mask_to_allow(uint32_t access_mask)
  84 {
  85         unsigned int allow = GPFS_SHARE_NONE;
  86
  87         if (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA)) {
  88                 allow |= GPFS_SHARE_WRITE;
  89         }
  90         if (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) {
  91                 allow |= GPFS_SHARE_READ;
  92         }
  93
  94         return allow;
  95 }
  96
  97 static unsigned int vfs_gpfs_share_access_to_deny(uint32_t share_access)
  98 {
  99         unsigned int deny = GPFS_DENY_NONE;
 100
 101         if (!(share_access & FILE_SHARE_WRITE)) {
 102                 deny |= GPFS_DENY_WRITE;
 103         }
 104         if (!(share_access & FILE_SHARE_READ)) {
 105                 deny |= GPFS_DENY_READ;
 106         }
 107
 108         /*
 109          * GPFS_DENY_DELETE can only be set together with either
 110          * GPFS_DENY_WRITE or GPFS_DENY_READ.
 111          */
 112         if ((deny & (GPFS_DENY_WRITE|GPFS_DENY_READ)) &&
 113             !(share_access & FILE_SHARE_DELETE)) {
 114                 deny |= GPFS_DENY_DELETE;
 115         }
 116
 117         return deny;
 118 }
 119
 120 static int set_gpfs_sharemode(files_struct *fsp, uint32_t access_mask,
 121                               uint32_t share_access)
 122 {
 123         unsigned int allow = GPFS_SHARE_NONE;
 124         unsigned int deny = GPFS_DENY_NONE;
 125         int result;
 126
 127         if (access_mask == 0) {
 128                 DBG_DEBUG("Clearing file system share mode.\n");
 129         } else {
 130                 allow = vfs_gpfs_access_mask_to_allow(access_mask);
 131                 deny = vfs_gpfs_share_access_to_deny(share_access);
 132         }
 133         DBG_DEBUG("access_mask=0x%x, allow=0x%x, share_access=0x%x, "
 134                   "deny=0x%x\n", access_mask, allow, share_access, deny);
 135
 136         result = gpfswrap_set_share(fsp_get_io_fd(fsp), allow, deny);
 137         if (result == 0) {
 138                 return 0;
 139         }
 140
 141         if (errno == EACCES) {
 142                 DBG_NOTICE("GPFS share mode denied for %s/%s.\n",
 143                            fsp->conn->connectpath,
 144                            fsp->fsp_name->base_name);
 145         } else if (errno == EPERM) {
 146                 DBG_ERR("Samba requested GPFS sharemode for %s/%s, but the "
 147                         "GPFS file system is not configured accordingly. "
 148                         "Configure file system with mmchfs -D nfs4 or "
 149                         "set gpfs:sharemodes=no in Samba.\n",
 150                         fsp->conn->connectpath,
 151                         fsp->fsp_name->base_name);
 152         } else {
 153                 DBG_ERR("gpfs_set_share failed: %s\n", strerror(errno));
 154         }
 155
 156         return result;
 157 }
 158
 159 static int vfs_gpfs_filesystem_sharemode(vfs_handle_struct *handle,
 160                                          files_struct *fsp,
 161                                          uint32_t share_access,
 162                                          uint32_t access_mask)
 163 {
 164
 165         struct gpfs_config_data *config;
 166         int ret = 0;
 167
 168         SMB_VFS_HANDLE_GET_DATA(handle, config,
 169                                 struct gpfs_config_data,
 170                                 return -1);
 171
 172         if(!config->sharemodes) {
 173                 return 0;
 174         }
 175
 176         /*
 177          * A named stream fsp will have the basefile open in the fsp
 178          * fd, so lacking a distinct fd for the stream we have to skip
 179          * set_gpfs_sharemode for stream.
 180          */
 181         if (fsp_is_alternate_stream(fsp)) {
 182                 DBG_NOTICE("Not requesting GPFS sharemode on stream: %s/%s\n",
 183                            fsp->conn->connectpath,
 184                            fsp_str_dbg(fsp));
 185                 return 0;
 186         }
 187
 188         ret = set_gpfs_sharemode(fsp, access_mask, share_access);
 189
 190         return ret;
 191 }
 192
 193 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
 194 {
 195
 196         struct gpfs_config_data *config;
 197
 198         SMB_VFS_HANDLE_GET_DATA(handle, config,
 199                                 struct gpfs_config_data,
 200                                 return -1);
 201
 202         if (config->sharemodes &&
 203             (fsp->fsp_flags.kernel_share_modes_taken))
 204         {
 205                 /*
 206                  * Always clear GPFS sharemode in case the actual
 207                  * close gets deferred due to outstanding POSIX locks
 208                  * (see fd_close_posix)
 209                  */
 210                 int ret = gpfswrap_set_share(fsp_get_io_fd(fsp), 0, 0);
 211                 if (ret != 0) {
 212                         DBG_ERR("Clearing GPFS sharemode on close failed for "
 213                                 " %s/%s: %s\n",
 214                                 fsp->conn->connectpath,
 215                                 fsp->fsp_name->base_name,
 216                                 strerror(errno));
 217                 }
 218         }
 219
 220         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 221 }
 222
 223 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
 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 #else /* HAVE_KERNEL_OPLOCKS_LINUX */
 282
 283 static int vfs_gpfs_setlease(vfs_handle_struct *handle,
 284                                 files_struct *fsp,
 285                                 int leasetype)
 286 {
 287         return ENOSYS;
 288 }
 289 #endif /* HAVE_KERNEL_OPLOCKS_LINUX */
 290
 291 static NTSTATUS vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
 292                                            const struct smb_filename *path,
 293                                            const char *name,
 294                                            TALLOC_CTX *mem_ctx,
 295                                            char **found_name)
 296 {
 297         int result;
 298         char *full_path = NULL;
 299         char *to_free = NULL;
 300         char real_pathname[PATH_MAX+1], tmpbuf[PATH_MAX];
 301         size_t full_path_len;
 302         int buflen;
 303         bool mangled;
 304         struct gpfs_config_data *config;
 305
 306         SMB_VFS_HANDLE_GET_DATA(handle, config,
 307                                 struct gpfs_config_data,
 308                                 return NT_STATUS_INTERNAL_ERROR);
 309
 310         if (!config->getrealfilename) {
 311                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 312                                                       mem_ctx, found_name);
 313         }
 314
 315         mangled = mangle_is_mangled(name, handle->conn->params);
 316         if (mangled) {
 317                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 318                                                       mem_ctx, found_name);
 319         }
 320
 321         full_path_len = full_path_tos(path->base_name, name,
 322                                       tmpbuf, sizeof(tmpbuf),
 323                                       &full_path, &to_free);
 324         if (full_path_len == -1) {
 325                 return NT_STATUS_NO_MEMORY;
 326         }
 327
 328         buflen = sizeof(real_pathname) - 1;
 329
 330         result = gpfswrap_get_realfilename_path(full_path, real_pathname,
 331                                                 &buflen);
 332
 333         TALLOC_FREE(to_free);
 334
 335         if ((result == -1) && (errno == ENOSYS)) {
 336                 return SMB_VFS_NEXT_GET_REAL_FILENAME(
 337                         handle, path, name, mem_ctx, found_name);
 338         }
 339
 340         if (result == -1) {
 341                 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
 342                            strerror(errno)));
 343                 return map_nt_error_from_unix(errno);
 344         }
 345
 346         /*
 347          * GPFS does not necessarily null-terminate the returned path
 348          * but instead returns the buffer length in buflen.
 349          */
 350
 351         if (buflen < sizeof(real_pathname)) {
 352                 real_pathname[buflen] = '\0';
 353         } else {
 354                 real_pathname[sizeof(real_pathname)-1] = '\0';
 355         }
 356
 357         DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
 358                    path->base_name, name, real_pathname));
 359
 360         name = strrchr_m(real_pathname, '/');
 361         if (name == NULL) {
 362                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 363         }
 364
 365         *found_name = talloc_strdup(mem_ctx, name+1);
 366         if (*found_name == NULL) {
 367                 return NT_STATUS_NO_MEMORY;
 368         }
 369
 370         return NT_STATUS_OK;
 371 }
 372
 373 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
 374 {
 375         unsigned int gpfs_aclflags = 0;
 376         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 377                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 378                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 379                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 380         gpfs_aclflags = control << 8;
 381         if (!(control & SEC_DESC_DACL_PRESENT))
 382                 gpfs_aclflags |= ACL4_FLAG_NULL_DACL;
 383         if (!(control & SEC_DESC_SACL_PRESENT))
 384                 gpfs_aclflags |= ACL4_FLAG_NULL_SACL;
 385         gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 386         gacl->v4Level1.acl_flags = gpfs_aclflags;
 387 }
 388
 389 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
 390 {
 391         uint16_t control = gpfs_aclflags >> 8;
 392         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 393                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 394                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 395                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 396         control |= SEC_DESC_SELF_RELATIVE;
 397         return control;
 398 }
 399
 400 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
 401 {
 402         gpfs_aclCount_t i;
 403         if (gacl==NULL)
 404         {
 405                 DEBUG(0, ("gpfs acl is NULL\n"));
 406                 return;
 407         }
 408
 409         DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
 410                       "control: %x\n",
 411                       gacl->acl_len, gacl->acl_level, gacl->acl_version,
 412                       gacl->acl_nace, gpfs_acl_flags(gacl)));
 413
 414         for(i=0; i<gacl->acl_nace; i++)
 415         {
 416                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 417                 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
 418                               "iflags:0x%x, who:%u\n",
 419                               i, gace->aceType, gace->aceFlags, gace->aceMask,
 420                               gace->aceIFlags, gace->aceWho));
 421         }
 422 }
 423
 424 static int gpfs_getacl_with_capability(const char *fname, int flags, void *buf)
 425 {
 426         int ret, saved_errno;
 427
 428         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
 429
 430         ret = gpfswrap_getacl(fname, flags, buf);
 431         saved_errno = errno;
 432
 433         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
 434
 435         errno = saved_errno;
 436         return ret;
 437 }
 438
 439 /*
 440  * get the ACL from GPFS, allocated on the specified mem_ctx
 441  * internally retries when initial buffer was too small
 442  *
 443  * caller needs to cast result to either
 444  * raw = yes: struct gpfs_opaque_acl
 445  * raw = no: struct gpfs_acl
 446  *
 447  */
 448 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
 449                          const char *fname,
 450                          const bool raw,
 451                          const gpfs_aclType_t type)
 452 {
 453
 454         void *aclbuf;
 455         size_t size = 512;
 456         int ret, flags;
 457         unsigned int *len;
 458         size_t struct_size;
 459         bool use_capability = false;
 460
 461 again:
 462
 463         aclbuf = talloc_zero_size(mem_ctx, size);
 464         if (aclbuf == NULL) {
 465                 errno = ENOMEM;
 466                 return NULL;
 467         }
 468
 469         if (raw) {
 470                 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
 471                 buf->acl_type = type;
 472                 flags = GPFS_GETACL_NATIVE;
 473                 len = (unsigned int *) &(buf->acl_buffer_len);
 474                 struct_size = sizeof(struct gpfs_opaque_acl);
 475         } else {
 476                 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
 477                 buf->acl_type = type;
 478                 buf->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 479                 flags = GPFS_GETACL_STRUCT;
 480                 len = &(buf->acl_len);
 481                 /* reserve space for control flags in gpfs 3.5 and beyond */
 482                 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
 483         }
 484
 485         /* set the length of the buffer as input value */
 486         *len = size;
 487
 488         if (use_capability) {
 489                 ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
 490         } else {
 491                 ret = gpfswrap_getacl(fname, flags, aclbuf);
 492                 if ((ret != 0) && (errno == EACCES)) {
 493                         DBG_DEBUG("Retry with DAC capability for %s\n", fname);
 494                         use_capability = true;
 495                         ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
 496                 }
 497         }
 498
 499         if ((ret != 0) && (errno == ENOSPC)) {
 500                 /*
 501                  * get the size needed to accommodate the complete buffer
 502                  *
 503                  * the value returned only applies to the ACL blob in the
 504                  * struct so make sure to also have headroom for the first
 505                  * struct members by adding room for the complete struct
 506                  * (might be a few bytes too much then)
 507                  */
 508                 size = *len + struct_size;
 509                 talloc_free(aclbuf);
 510                 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
 511                 goto again;
 512         }
 513
 514         if (ret != 0) {
 515                 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
 516                           strerror(errno)));
 517                 talloc_free(aclbuf);
 518                 return NULL;
 519         }
 520
 521         return aclbuf;
 522 }
 523
 524 /* Tries to get nfs4 acls and returns SMB ACL allocated.
 525  * On failure returns 1 if it got non-NFSv4 ACL to prompt
 526  * retry with POSIX ACL checks.
 527  * On failure returns -1 if there is system (GPFS) error, check errno.
 528  * Returns 0 on success
 529  */
 530 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx, const char *fname,
 531                              struct SMB4ACL_T **ppacl)
 532 {
 533         gpfs_aclCount_t i;
 534         struct gpfs_acl *gacl = NULL;
 535         DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
 536
 537         /* Get the ACL */
 538         gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
 539                                                   false, 0);
 540         if (gacl == NULL) {
 541                 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
 542                            fname, strerror(errno)));
 543                 if (errno == ENODATA) {
 544                         /*
 545                          * GPFS returns ENODATA for snapshot
 546                          * directories. Retry with POSIX ACLs check.
 547                          */
 548                         return 1;
 549                 }
 550
 551                 return -1;
 552         }
 553
 554         if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
 555                 DEBUG(10, ("Got non-nfsv4 acl\n"));
 556                 /* Retry with POSIX ACLs check */
 557                 talloc_free(gacl);
 558                 return 1;
 559         }
 560
 561         *ppacl = smb_create_smb4acl(mem_ctx);
 562
 563         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
 564                 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
 565                 smbacl4_set_controlflags(*ppacl, control);
 566         }
 567
 568         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
 569                    gacl->acl_len, gacl->acl_level, gacl->acl_version,
 570                    gacl->acl_nace, gpfs_acl_flags(gacl)));
 571
 572         for (i=0; i<gacl->acl_nace; i++) {
 573                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 574                 SMB_ACE4PROP_T smbace = { 0 };
 575                 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
 576                            "who: %d\n", gace->aceType, gace->aceIFlags,
 577                            gace->aceFlags, gace->aceMask, gace->aceWho));
 578
 579                 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
 580                         smbace.flags |= SMB_ACE4_ID_SPECIAL;
 581                         switch (gace->aceWho) {
 582                         case ACE4_SPECIAL_OWNER:
 583                                 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
 584                                 break;
 585                         case ACE4_SPECIAL_GROUP:
 586                                 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
 587                                 break;
 588                         case ACE4_SPECIAL_EVERYONE:
 589                                 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
 590                                 break;
 591                         default:
 592                                 DEBUG(8, ("invalid special gpfs id %d "
 593                                           "ignored\n", gace->aceWho));
 594                                 continue; /* don't add it */
 595                         }
 596                 } else {
 597                         if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
 598                                 smbace.who.gid = gace->aceWho;
 599                         else
 600                                 smbace.who.uid = gace->aceWho;
 601                 }
 602
 603                 /* remove redundant deny entries */
 604                 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
 605                         struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
 606                         if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
 607                             prev->aceFlags == gace->aceFlags &&
 608                             prev->aceIFlags == gace->aceIFlags &&
 609                             (gace->aceMask & prev->aceMask) == 0 &&
 610                             gace->aceWho == prev->aceWho) {
 611                                 /* it's redundant - skip it */
 612                                 continue;
 613                         }
 614                 }
 615
 616                 smbace.aceType = gace->aceType;
 617                 smbace.aceFlags = gace->aceFlags;
 618                 smbace.aceMask = gace->aceMask;
 619                 smb_add_ace4(*ppacl, &smbace);
 620         }
 621
 622         talloc_free(gacl);
 623
 624         return 0;
 625 }
 626
 627 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
 628         files_struct *fsp, uint32_t security_info,
 629         TALLOC_CTX *mem_ctx,
 630         struct security_descriptor **ppdesc)
 631 {
 632         struct SMB4ACL_T *pacl = NULL;
 633         int     result;
 634         struct gpfs_config_data *config;
 635         TALLOC_CTX *frame = talloc_stackframe();
 636         NTSTATUS status;
 637
 638         *ppdesc = NULL;
 639
 640         SMB_VFS_HANDLE_GET_DATA(handle, config,
 641                                 struct gpfs_config_data,
 642                                 return NT_STATUS_INTERNAL_ERROR);
 643
 644         if (!config->acl) {
 645                 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
 646                                                   mem_ctx, ppdesc);
 647                 TALLOC_FREE(frame);
 648                 return status;
 649         }
 650
 651         result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
 652
 653         if (result == 0) {
 654                 status = smb_fget_nt_acl_nfs4(fsp, &config->nfs4_params,
 655                                               security_info,
 656                                               mem_ctx, ppdesc, pacl);
 657                 TALLOC_FREE(frame);
 658                 return status;
 659         }
 660
 661         if (result > 0) {
 662                 DEBUG(10, ("retrying with posix acl...\n"));
 663                 status = posix_fget_nt_acl(fsp, security_info,
 664                                            mem_ctx, ppdesc);
 665                 TALLOC_FREE(frame);
 666                 return status;
 667         }
 668
 669         TALLOC_FREE(frame);
 670
 671         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 672         return map_nt_error_from_unix(errno);
 673 }
 674
 675 static bool vfs_gpfs_nfs4_ace_to_gpfs_ace(SMB_ACE4PROP_T *nfs4_ace,
 676                                           struct gpfs_ace_v4 *gace,
 677                                           uid_t owner_uid)
 678 {
 679         gace->aceType = nfs4_ace->aceType;
 680         gace->aceFlags = nfs4_ace->aceFlags;
 681         gace->aceMask = nfs4_ace->aceMask;
 682
 683         if (nfs4_ace->flags & SMB_ACE4_ID_SPECIAL) {
 684                 switch(nfs4_ace->who.special_id) {
 685                 case SMB_ACE4_WHO_EVERYONE:
 686                         gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 687                         gace->aceWho = ACE4_SPECIAL_EVERYONE;
 688                         break;
 689                 case SMB_ACE4_WHO_OWNER:
 690                         /*
 691                          * With GPFS it is not possible to deny ACL or
 692                          * attribute access to the owner. Setting an
 693                          * ACL with such an entry is not possible.
 694                          * Denying ACL or attribute access for the
 695                          * owner through a named ACL entry can be
 696                          * stored in an ACL, it is just not effective.
 697                          *
 698                          * Map this case to a named entry to allow at
 699                          * least setting this ACL, which will be
 700                          * enforced by the smbd permission check. Do
 701                          * not do this for an inheriting OWNER entry,
 702                          * as this represents a CREATOR OWNER ACE. The
 703                          * remaining limitation is that CREATOR OWNER
 704                          * cannot deny ACL or attribute access.
 705                          */
 706                         if (!nfs_ace_is_inherit(nfs4_ace) &&
 707                             nfs4_ace->aceType ==
 708                                         SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
 709                             nfs4_ace->aceMask & (SMB_ACE4_READ_ATTRIBUTES|
 710                                                  SMB_ACE4_WRITE_ATTRIBUTES|
 711                                                  SMB_ACE4_READ_ACL|
 712                                                  SMB_ACE4_WRITE_ACL)) {
 713                                 gace->aceIFlags = 0;
 714                                 gace->aceWho = owner_uid;
 715                         } else {
 716                                 gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 717                                 gace->aceWho = ACE4_SPECIAL_OWNER;
 718                         }
 719                         break;
 720                 case SMB_ACE4_WHO_GROUP:
 721                         gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 722                         gace->aceWho = ACE4_SPECIAL_GROUP;
 723                         break;
 724                 default:
 725                         DBG_WARNING("Unsupported special_id %d\n",
 726                                     nfs4_ace->who.special_id);
 727                         return false;
 728                 }
 729
 730                 return true;
 731         }
 732
 733         gace->aceIFlags = 0;
 734         gace->aceWho = (nfs4_ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) ?
 735                 nfs4_ace->who.gid : nfs4_ace->who.uid;
 736
 737         return true;
 738 }
 739
 740 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
 741                                                 files_struct *fsp,
 742                                                 struct SMB4ACL_T *smbacl,
 743                                                 bool controlflags)
 744 {
 745         struct gpfs_acl *gacl;
 746         gpfs_aclLen_t gacl_len;
 747         struct SMB4ACE_T *smbace;
 748
 749         gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
 750                 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
 751
 752         gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
 753         if (gacl == NULL) {
 754                 DEBUG(0, ("talloc failed\n"));
 755                 errno = ENOMEM;
 756                 return NULL;
 757         }
 758
 759         gacl->acl_level = GPFS_ACL_LEVEL_BASE;
 760         gacl->acl_version = GPFS_ACL_VERSION_NFS4;
 761         gacl->acl_type = GPFS_ACL_TYPE_NFS4;
 762         gacl->acl_nace = 0; /* change later... */
 763
 764         if (controlflags) {
 765                 gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 766                 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
 767         }
 768
 769         for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
 770                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
 771                 SMB_ACE4PROP_T  *aceprop = smb_get_ace4(smbace);
 772                 bool add_ace;
 773
 774                 add_ace = vfs_gpfs_nfs4_ace_to_gpfs_ace(aceprop, gace,
 775                                                         fsp->fsp_name->st.st_ex_uid);
 776                 if (!add_ace) {
 777                         continue;
 778                 }
 779
 780                 gacl->acl_nace++;
 781         }
 782         gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
 783                 - (char *)gacl;
 784         return gacl;
 785 }
 786
 787 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
 788                                    files_struct *fsp,
 789                                    struct SMB4ACL_T *smbacl)
 790 {
 791         int ret;
 792         struct gpfs_acl *gacl;
 793         TALLOC_CTX *mem_ctx = talloc_tos();
 794
 795         gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
 796         if (gacl == NULL) { /* out of memory */
 797                 return False;
 798         }
 799         ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 800                               GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
 801
 802         if ((ret != 0) && (errno == EINVAL)) {
 803                 DEBUG(10, ("Retry without nfs41 control flags\n"));
 804                 talloc_free(gacl);
 805                 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
 806                 if (gacl == NULL) { /* out of memory */
 807                         return False;
 808                 }
 809                 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 810                                       GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
 811                                       gacl);
 812         }
 813
 814         if (ret != 0) {
 815                 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
 816                 gpfs_dumpacl(8, gacl);
 817                 return False;
 818         }
 819
 820         DEBUG(10, ("gpfs_putacl succeeded\n"));
 821         return True;
 822 }
 823
 824 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
 825 {
 826         struct gpfs_acl *acl;
 827         NTSTATUS result = NT_STATUS_ACCESS_DENIED;
 828
 829         acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
 830                                                  fsp->fsp_name->base_name,
 831                                                  false, 0);
 832         if (acl == NULL) {
 833                 return map_nt_error_from_unix(errno);
 834         }
 835
 836         if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
 837                 struct gpfs_config_data *config;
 838
 839                 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
 840                                  "refuse_dacl_protected", false)
 841                     && (psd->type&SEC_DESC_DACL_PROTECTED)) {
 842                         DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
 843                         talloc_free(acl);
 844                         return NT_STATUS_NOT_SUPPORTED;
 845                 }
 846
 847                 SMB_VFS_HANDLE_GET_DATA(handle, config,
 848                                         struct gpfs_config_data,
 849                                         return NT_STATUS_INTERNAL_ERROR);
 850
 851                 result = smb_set_nt_acl_nfs4(handle,
 852                         fsp, &config->nfs4_params, security_info_sent, psd,
 853                         gpfsacl_process_smbacl);
 854         } else { /* assume POSIX ACL - by default... */
 855                 result = set_nt_acl(fsp, security_info_sent, psd);
 856         }
 857
 858         talloc_free(acl);
 859         return result;
 860 }
 861
 862 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
 863 {
 864         struct gpfs_config_data *config;
 865
 866         SMB_VFS_HANDLE_GET_DATA(handle, config,
 867                                 struct gpfs_config_data,
 868                                 return NT_STATUS_INTERNAL_ERROR);
 869
 870         if (!config->acl) {
 871                 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 872         }
 873
 874         return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
 875 }
 876
 877 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
 878 {
 879         SMB_ACL_T result;
 880         gpfs_aclCount_t i;
 881
 882         result = sys_acl_init(mem_ctx);
 883         if (result == NULL) {
 884                 errno = ENOMEM;
 885                 return NULL;
 886         }
 887
 888         result->count = pacl->acl_nace;
 889         result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
 890                                      result->count);
 891         if (result->acl == NULL) {
 892                 TALLOC_FREE(result);
 893                 errno = ENOMEM;
 894                 return NULL;
 895         }
 896
 897         for (i=0; i<pacl->acl_nace; i++) {
 898                 struct smb_acl_entry *ace = &result->acl[i];
 899                 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
 900
 901                 DEBUG(10, ("Converting type %d id %lu perm %x\n",
 902                            (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
 903                            (int)g_ace->ace_perm));
 904
 905                 switch (g_ace->ace_type) {
 906                 case GPFS_ACL_USER:
 907                         ace->a_type = SMB_ACL_USER;
 908                         ace->info.user.uid = (uid_t)g_ace->ace_who;
 909                         break;
 910                 case GPFS_ACL_USER_OBJ:
 911                         ace->a_type = SMB_ACL_USER_OBJ;
 912                         break;
 913                 case GPFS_ACL_GROUP:
 914                         ace->a_type = SMB_ACL_GROUP;
 915                         ace->info.group.gid = (gid_t)g_ace->ace_who;
 916                         break;
 917                 case GPFS_ACL_GROUP_OBJ:
 918                         ace->a_type = SMB_ACL_GROUP_OBJ;
 919                         break;
 920                 case GPFS_ACL_OTHER:
 921                         ace->a_type = SMB_ACL_OTHER;
 922                         break;
 923                 case GPFS_ACL_MASK:
 924                         ace->a_type = SMB_ACL_MASK;
 925                         break;
 926                 default:
 927                         DEBUG(10, ("Got invalid ace_type: %d\n",
 928                                    g_ace->ace_type));
 929                         TALLOC_FREE(result);
 930                         errno = EINVAL;
 931                         return NULL;
 932                 }
 933
 934                 ace->a_perm = 0;
 935                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
 936                         SMB_ACL_READ : 0;
 937                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
 938                         SMB_ACL_WRITE : 0;
 939                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
 940                         SMB_ACL_EXECUTE : 0;
 941
 942                 DEBUGADD(10, ("Converted to %d perm %x\n",
 943                               ace->a_type, ace->a_perm));
 944         }
 945
 946         return result;
 947 }
 948
 949 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type,
 950                                        TALLOC_CTX *mem_ctx)
 951 {
 952         struct gpfs_acl *pacl;
 953         SMB_ACL_T result = NULL;
 954
 955         pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
 956
 957         if (pacl == NULL) {
 958                 DEBUG(10, ("vfs_gpfs_getacl failed for %s with %s\n",
 959                            path, strerror(errno)));
 960                 if (errno == 0) {
 961                         errno = EINVAL;
 962                 }
 963                 goto done;
 964         }
 965
 966         if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
 967                 DEBUG(10, ("Got acl version %d, expected %d\n",
 968                            pacl->acl_version, GPFS_ACL_VERSION_POSIX));
 969                 errno = EINVAL;
 970                 goto done;
 971         }
 972
 973         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
 974                    pacl->acl_len, pacl->acl_level, pacl->acl_version,
 975                    pacl->acl_nace));
 976
 977         result = gpfs2smb_acl(pacl, mem_ctx);
 978         if (result != NULL) {
 979                 errno = 0;
 980         }
 981
 982  done:
 983
 984         if (pacl != NULL) {
 985                 talloc_free(pacl);
 986         }
 987         if (errno != 0) {
 988                 TALLOC_FREE(result);
 989         }
 990         return result;
 991 }
 992
 993 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
 994                                         files_struct *fsp,
 995                                         SMB_ACL_TYPE_T type,
 996                                         TALLOC_CTX *mem_ctx)
 997 {
 998         gpfs_aclType_t gpfs_type;
 999         struct gpfs_config_data *config;
1000
1001         SMB_VFS_HANDLE_GET_DATA(handle, config,
1002                                 struct gpfs_config_data,
1003                                 return NULL);
1004
1005         if (!config->acl) {
1006                 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, type, mem_ctx);
1007         }
1008
1009         switch(type) {
1010         case SMB_ACL_TYPE_ACCESS:
1011                 gpfs_type = GPFS_ACL_TYPE_ACCESS;
1012                 break;
1013         case SMB_ACL_TYPE_DEFAULT:
1014                 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
1015                 break;
1016         default:
1017                 DEBUG(0, ("Got invalid type: %d\n", type));
1018                 smb_panic("exiting");
1019         }
1020         return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
1021                                      gpfs_type, mem_ctx);
1022 }
1023
1024 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1025                                       files_struct *fsp,
1026                                       TALLOC_CTX *mem_ctx,
1027                                       char **blob_description,
1028                                       DATA_BLOB *blob)
1029 {
1030         struct gpfs_config_data *config;
1031         struct gpfs_opaque_acl *acl = NULL;
1032         DATA_BLOB aclblob;
1033         int result;
1034
1035         SMB_VFS_HANDLE_GET_DATA(handle, config,
1036                                 struct gpfs_config_data,
1037                                 return -1);
1038
1039         if (!config->acl) {
1040                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1041                                                         blob_description, blob);
1042         }
1043
1044         errno = 0;
1045         acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1046                                                 fsp->fsp_name->base_name,
1047                                                 true,
1048                                                 GPFS_ACL_TYPE_NFS4);
1049
1050         if (errno) {
1051                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1052                                         errno, strerror(errno)));
1053
1054                 /* EINVAL means POSIX ACL, bail out on other cases */
1055                 if (errno != EINVAL) {
1056                         return -1;
1057                 }
1058         }
1059
1060         if (acl != NULL) {
1061                 /*
1062                  * file has NFSv4 ACL
1063                  *
1064                  * we only need the actual ACL blob here
1065                  * acl_version will always be NFS4 because we asked
1066                  * for NFS4
1067                  * acl_type is only used for POSIX ACLs
1068                  */
1069                 aclblob.data = (uint8_t*) acl->acl_var_data;
1070                 aclblob.length = acl->acl_buffer_len;
1071
1072                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1073                 if (!*blob_description) {
1074                         talloc_free(acl);
1075                         errno = ENOMEM;
1076                         return -1;
1077                 }
1078
1079                 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1080                                                               aclblob, mem_ctx,
1081                                                               blob);
1082
1083                 talloc_free(acl);
1084                 return result;
1085         }
1086
1087         /* fall back to POSIX ACL */
1088         return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1089                                          blob_description, blob);
1090 }
1091
1092 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1093                                      SMB_ACL_TYPE_T type)
1094 {
1095         gpfs_aclLen_t len;
1096         struct gpfs_acl *result;
1097         int i;
1098
1099         DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1100
1101         len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1102                 sizeof(gpfs_ace_v1_t);
1103
1104         result = (struct gpfs_acl *)SMB_MALLOC(len);
1105         if (result == NULL) {
1106                 errno = ENOMEM;
1107                 return result;
1108         }
1109
1110         result->acl_len = len;
1111         result->acl_level = 0;
1112         result->acl_version = GPFS_ACL_VERSION_POSIX;
1113         result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1114                 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1115         result->acl_nace = pacl->count;
1116
1117         for (i=0; i<pacl->count; i++) {
1118                 const struct smb_acl_entry *ace = &pacl->acl[i];
1119                 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1120
1121                 DEBUG(10, ("Converting type %d perm %x\n",
1122                            (int)ace->a_type, (int)ace->a_perm));
1123
1124                 g_ace->ace_perm = 0;
1125
1126                 switch(ace->a_type) {
1127                 case SMB_ACL_USER:
1128                         g_ace->ace_type = GPFS_ACL_USER;
1129                         g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1130                         break;
1131                 case SMB_ACL_USER_OBJ:
1132                         g_ace->ace_type = GPFS_ACL_USER_OBJ;
1133                         g_ace->ace_perm |= ACL_PERM_CONTROL;
1134                         g_ace->ace_who = 0;
1135                         break;
1136                 case SMB_ACL_GROUP:
1137                         g_ace->ace_type = GPFS_ACL_GROUP;
1138                         g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1139                         break;
1140                 case SMB_ACL_GROUP_OBJ:
1141                         g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1142                         g_ace->ace_who = 0;
1143                         break;
1144                 case SMB_ACL_MASK:
1145                         g_ace->ace_type = GPFS_ACL_MASK;
1146                         g_ace->ace_perm = 0x8f;
1147                         g_ace->ace_who = 0;
1148                         break;
1149                 case SMB_ACL_OTHER:
1150                         g_ace->ace_type = GPFS_ACL_OTHER;
1151                         g_ace->ace_who = 0;
1152                         break;
1153                 default:
1154                         DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1155                         errno = EINVAL;
1156                         SAFE_FREE(result);
1157                         return NULL;
1158                 }
1159
1160                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1161                         ACL_PERM_READ : 0;
1162                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1163                         ACL_PERM_WRITE : 0;
1164                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1165                         ACL_PERM_EXECUTE : 0;
1166
1167                 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1168                               g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1169         }
1170
1171         return result;
1172 }
1173
1174 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1175                                   files_struct *fsp,
1176                                   SMB_ACL_TYPE_T type,
1177                                   SMB_ACL_T theacl)
1178 {
1179         struct gpfs_config_data *config;
1180         struct gpfs_acl *gpfs_acl = NULL;
1181         int result;
1182
1183         SMB_VFS_HANDLE_GET_DATA(handle, config,
1184                                 struct gpfs_config_data,
1185                                 return -1);
1186
1187         if (!config->acl) {
1188                 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, type, theacl);
1189         }
1190
1191         gpfs_acl = smb2gpfs_acl(theacl, type);
1192         if (gpfs_acl == NULL) {
1193                 return -1;
1194         }
1195
1196         /*
1197          * This is no longer a handle based call.
1198          */
1199         result = gpfswrap_putacl(fsp->fsp_name->base_name,
1200                                  GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA,
1201                                  gpfs_acl);
1202         SAFE_FREE(gpfs_acl);
1203         return result;
1204 }
1205
1206 static int gpfsacl_sys_acl_delete_def_fd(vfs_handle_struct *handle,
1207                                 files_struct *fsp)
1208 {
1209         struct gpfs_config_data *config;
1210
1211         SMB_VFS_HANDLE_GET_DATA(handle, config,
1212                                 struct gpfs_config_data,
1213                                 return -1);
1214
1215         if (!config->acl) {
1216                 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FD(handle, fsp);
1217         }
1218
1219         errno = ENOTSUP;
1220         return -1;
1221 }
1222
1223
1224 /*
1225  * Assumed: mode bits are shiftable and standard
1226  * Output: the new aceMask field for an smb nfs4 ace
1227  */
1228 static uint32_t gpfsacl_mask_filter(uint32_t aceType, uint32_t aceMask, uint32_t rwx)
1229 {
1230         const uint32_t posix_nfs4map[3] = {
1231                 SMB_ACE4_EXECUTE, /* execute */
1232                 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1233                 SMB_ACE4_READ_DATA /* read */
1234         };
1235         int     i;
1236         uint32_t        posix_mask = 0x01;
1237         uint32_t        posix_bit;
1238         uint32_t        nfs4_bits;
1239
1240         for(i=0; i<3; i++) {
1241                 nfs4_bits = posix_nfs4map[i];
1242                 posix_bit = rwx & posix_mask;
1243
1244                 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1245                         if (posix_bit)
1246                                 aceMask |= nfs4_bits;
1247                         else
1248                                 aceMask &= ~nfs4_bits;
1249                 } else {
1250                         /* add deny bits when suitable */
1251                         if (!posix_bit)
1252                                 aceMask |= nfs4_bits;
1253                         else
1254                                 aceMask &= ~nfs4_bits;
1255                 } /* other ace types are unexpected */
1256
1257                 posix_mask <<= 1;
1258         }
1259
1260         return aceMask;
1261 }
1262
1263 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1264                              const struct smb_filename *fname, mode_t mode)
1265 {
1266         char *path = fname->base_name;
1267         struct SMB4ACL_T *pacl = NULL;
1268         int     result;
1269         bool    haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1270         int     i;
1271         files_struct fake_fsp = { 0 }; /* TODO: rationalize parametrization */
1272         struct SMB4ACE_T *smbace;
1273         TALLOC_CTX *frame = talloc_stackframe();
1274
1275         DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1276
1277         result = gpfs_get_nfs4_acl(frame, path, &pacl);
1278         if (result) {
1279                 TALLOC_FREE(frame);
1280                 return result;
1281         }
1282
1283         if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1284                 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1285         }
1286
1287         for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1288                 SMB_ACE4PROP_T  *ace = smb_get_ace4(smbace);
1289                 uint32_t        specid = ace->who.special_id;
1290
1291                 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1292                     ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1293                     specid <= SMB_ACE4_WHO_EVERYONE) {
1294
1295                         uint32_t newMask;
1296
1297                         if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1298                                 haveAllowEntry[specid] = True;
1299
1300                         /* mode >> 6 for @owner, mode >> 3 for @group,
1301                          * mode >> 0 for @everyone */
1302                         newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1303                                                       mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1304                         if (ace->aceMask!=newMask) {
1305                                 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1306                                            path, ace->aceMask, newMask, specid));
1307                         }
1308                         ace->aceMask = newMask;
1309                 }
1310         }
1311
1312         /* make sure we have at least ALLOW entries
1313          * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1314          * - if necessary
1315          */
1316         for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1317                 SMB_ACE4PROP_T ace = { 0 };
1318
1319                 if (haveAllowEntry[i]==True)
1320                         continue;
1321
1322                 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1323                 ace.flags |= SMB_ACE4_ID_SPECIAL;
1324                 ace.who.special_id = i;
1325
1326                 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1327                         ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1328
1329                 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1330                                                   mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1331
1332                 /* don't add unnecessary aces */
1333                 if (!ace.aceMask)
1334                         continue;
1335
1336                 /* we add it to the END - as windows expects allow aces */
1337                 smb_add_ace4(pacl, &ace);
1338                 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1339                            path, mode, i, ace.aceMask));
1340         }
1341
1342         /* don't add complementary DENY ACEs here */
1343         fake_fsp.fsp_name = synthetic_smb_fname(frame,
1344                                                 path,
1345                                                 NULL,
1346                                                 NULL,
1347                                                 fname->twrp,
1348                                                 0);
1349         if (fake_fsp.fsp_name == NULL) {
1350                 errno = ENOMEM;
1351                 TALLOC_FREE(frame);
1352                 return -1;
1353         }
1354         /* put the acl */
1355         if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1356                 TALLOC_FREE(frame);
1357                 return -1;
1358         }
1359
1360         TALLOC_FREE(frame);
1361         return 0; /* ok for [f]chmod */
1362 }
1363
1364 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1365 {
1366                  SMB_STRUCT_STAT st;
1367                  int rc;
1368
1369                  if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1370                          return -1;
1371                  }
1372
1373                  /* avoid chmod() if possible, to preserve acls */
1374                  if ((st.st_ex_mode & ~S_IFMT) == mode) {
1375                          return 0;
1376                  }
1377
1378                  rc = gpfsacl_emu_chmod(handle, fsp->fsp_name,
1379                                         mode);
1380                  if (rc == 1)
1381                          return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1382                  return rc;
1383 }
1384
1385 static uint32_t vfs_gpfs_winattrs_to_dosmode(unsigned int winattrs)
1386 {
1387         uint32_t dosmode = 0;
1388
1389         if (winattrs & GPFS_WINATTR_ARCHIVE){
1390                 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1391         }
1392         if (winattrs & GPFS_WINATTR_HIDDEN){
1393                 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1394         }
1395         if (winattrs & GPFS_WINATTR_SYSTEM){
1396                 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1397         }
1398         if (winattrs & GPFS_WINATTR_READONLY){
1399                 dosmode |= FILE_ATTRIBUTE_READONLY;
1400         }
1401         if (winattrs & GPFS_WINATTR_SPARSE_FILE) {
1402                 dosmode |= FILE_ATTRIBUTE_SPARSE;
1403         }
1404         if (winattrs & GPFS_WINATTR_OFFLINE) {
1405                 dosmode |= FILE_ATTRIBUTE_OFFLINE;
1406         }
1407
1408         return dosmode;
1409 }
1410
1411 static unsigned int vfs_gpfs_dosmode_to_winattrs(uint32_t dosmode)
1412 {
1413         unsigned int winattrs = 0;
1414
1415         if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1416                 winattrs |= GPFS_WINATTR_ARCHIVE;
1417         }
1418         if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1419                 winattrs |= GPFS_WINATTR_HIDDEN;
1420         }
1421         if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1422                 winattrs |= GPFS_WINATTR_SYSTEM;
1423         }
1424         if (dosmode & FILE_ATTRIBUTE_READONLY){
1425                 winattrs |= GPFS_WINATTR_READONLY;
1426         }
1427         if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1428                 winattrs |= GPFS_WINATTR_SPARSE_FILE;
1429         }
1430         if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
1431                 winattrs |= GPFS_WINATTR_OFFLINE;
1432         }
1433
1434         return winattrs;
1435 }
1436
1437 static struct timespec gpfs_timestruc64_to_timespec(struct gpfs_timestruc64 g)
1438 {
1439         return (struct timespec) { .tv_sec = g.tv_sec, .tv_nsec = g.tv_nsec };
1440 }
1441
1442 static NTSTATUS vfs_gpfs_fget_dos_attributes(struct vfs_handle_struct *handle,
1443                                              struct files_struct *fsp,
1444                                              uint32_t *dosmode)
1445 {
1446         struct gpfs_config_data *config;
1447         int fd = fsp_get_pathref_fd(fsp);
1448         char buf[PATH_MAX];
1449         const char *p = NULL;
1450         struct gpfs_iattr64 iattr = { };
1451         unsigned int litemask = 0;
1452         struct timespec ts;
1453         int ret;
1454
1455         SMB_VFS_HANDLE_GET_DATA(handle, config,
1456                                 struct gpfs_config_data,
1457                                 return NT_STATUS_INTERNAL_ERROR);
1458
1459         if (!config->winattr) {
1460                 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1461         }
1462
1463         if (fsp->fsp_flags.is_pathref && !config->pathref_ok.gpfs_fstat_x) {
1464                 if (fsp->fsp_flags.have_proc_fds) {
1465                         p = sys_proc_fd_path(fd, buf, sizeof(buf));
1466                         if (p == NULL) {
1467                                 return NT_STATUS_NO_MEMORY;
1468                         }
1469                 } else {
1470                         p = fsp->fsp_name->base_name;
1471                 }
1472         }
1473
1474         if (p != NULL) {
1475                 ret = gpfswrap_stat_x(p, &litemask, &iattr, sizeof(iattr));
1476         } else {
1477                 ret = gpfswrap_fstat_x(fd, &litemask, &iattr, sizeof(iattr));
1478         }
1479         if (ret == -1 && errno == ENOSYS) {
1480                 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1481         }
1482
1483         if (ret == -1 && errno == EACCES) {
1484                 int saved_errno = 0;
1485
1486                 /*
1487                  * According to MS-FSA 2.1.5.1.2.1 "Algorithm to Check Access to
1488                  * an Existing File" FILE_LIST_DIRECTORY on a directory implies
1489                  * FILE_READ_ATTRIBUTES for directory entries. Being able to
1490                  * open a file implies FILE_LIST_DIRECTORY.
1491                  */
1492
1493                 set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1494
1495                 if (p != NULL) {
1496                         ret = gpfswrap_stat_x(p,
1497                                               &litemask,
1498                                               &iattr,
1499                                               sizeof(iattr));
1500                 } else {
1501                         ret = gpfswrap_fstat_x(fd,
1502                                                &litemask,
1503                                                &iattr,
1504                                                sizeof(iattr));
1505                 }
1506                 if (ret == -1) {
1507                         saved_errno = errno;
1508                 }
1509
1510                 drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1511
1512                 if (saved_errno != 0) {
1513                         errno = saved_errno;
1514                 }
1515         }
1516
1517         if (ret == -1) {
1518                 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1519                             fsp->fsp_name->base_name, strerror(errno));
1520                 return map_nt_error_from_unix(errno);
1521         }
1522
1523         ts = gpfs_timestruc64_to_timespec(iattr.ia_createtime);
1524
1525         *dosmode |= vfs_gpfs_winattrs_to_dosmode(iattr.ia_winflags);
1526         update_stat_ex_create_time(&fsp->fsp_name->st, ts);
1527
1528         return NT_STATUS_OK;
1529 }
1530
1531 static NTSTATUS vfs_gpfs_fset_dos_attributes(struct vfs_handle_struct *handle,
1532                                              struct files_struct *fsp,
1533                                              uint32_t dosmode)
1534 {
1535         struct gpfs_config_data *config;
1536         struct gpfs_winattr attrs = { };
1537         int ret;
1538
1539         SMB_VFS_HANDLE_GET_DATA(handle, config,
1540                                 struct gpfs_config_data,
1541                                 return NT_STATUS_INTERNAL_ERROR);
1542
1543         if (!config->winattr) {
1544                 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1545         }
1546
1547         attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1548
1549         if (!fsp->fsp_flags.is_pathref) {
1550                 ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
1551                                             GPFS_WINATTR_SET_ATTRS, &attrs);
1552                 if (ret == -1) {
1553                         DBG_WARNING("Setting winattrs failed for %s: %s\n",
1554                                     fsp_str_dbg(fsp), strerror(errno));
1555                         return map_nt_error_from_unix(errno);
1556                 }
1557                 return NT_STATUS_OK;
1558         }
1559
1560         if (fsp->fsp_flags.have_proc_fds) {
1561                 int fd = fsp_get_pathref_fd(fsp);
1562                 const char *p = NULL;
1563                 char buf[PATH_MAX];
1564
1565                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
1566                 if (p == NULL) {
1567                         return NT_STATUS_NO_MEMORY;
1568                 }
1569
1570                 ret = gpfswrap_set_winattrs_path(p,
1571                                                  GPFS_WINATTR_SET_ATTRS,
1572                                                  &attrs);
1573                 if (ret == -1) {
1574                         DBG_WARNING("Setting winattrs failed for [%s][%s]: %s\n",
1575                                     p, fsp_str_dbg(fsp), strerror(errno));
1576                         return map_nt_error_from_unix(errno);
1577                 }
1578                 return NT_STATUS_OK;
1579         }
1580
1581         /*
1582          * This is no longer a handle based call.
1583          */
1584         ret = gpfswrap_set_winattrs_path(fsp->fsp_name->base_name,
1585                                          GPFS_WINATTR_SET_ATTRS,
1586                                          &attrs);
1587         if (ret == -1) {
1588                 DBG_WARNING("Setting winattrs failed for [%s]: %s\n",
1589                             fsp_str_dbg(fsp), strerror(errno));
1590                 return map_nt_error_from_unix(errno);
1591         }
1592
1593         return NT_STATUS_OK;
1594 }
1595
1596 static int stat_with_capability(struct vfs_handle_struct *handle,
1597                                 struct smb_filename *smb_fname, int flag)
1598 {
1599         int fd = -1;
1600         NTSTATUS status;
1601         struct smb_filename *dir_name = NULL;
1602         struct smb_filename *rel_name = NULL;
1603         struct stat st;
1604         int ret = -1;
1605
1606         status = SMB_VFS_PARENT_PATHNAME(handle->conn,
1607                                          talloc_tos(),
1608                                          smb_fname,
1609                                          &dir_name,
1610                                          &rel_name);
1611         if (!NT_STATUS_IS_OK(status)) {
1612                 errno = map_errno_from_nt_status(status);
1613                 return -1;
1614         }
1615
1616         fd = open(dir_name->base_name, O_RDONLY, 0);
1617         if (fd == -1) {
1618                 TALLOC_FREE(dir_name);
1619                 return -1;
1620         }
1621
1622         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1623         ret = fstatat(fd, rel_name->base_name, &st, flag);
1624         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1625
1626         TALLOC_FREE(dir_name);
1627         close(fd);
1628
1629         if (ret == 0) {
1630                 init_stat_ex_from_stat(
1631                         &smb_fname->st, &st,
1632                         lp_fake_directory_create_times(SNUM(handle->conn)));
1633         }
1634
1635         return ret;
1636 }
1637
1638 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1639                          struct smb_filename *smb_fname)
1640 {
1641         int ret;
1642
1643         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1644         if (ret == -1 && errno == EACCES) {
1645                 DEBUG(10, ("Trying stat with capability for %s\n",
1646                            smb_fname->base_name));
1647                 ret = stat_with_capability(handle, smb_fname, 0);
1648         }
1649         return ret;
1650 }
1651
1652 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1653                           struct smb_filename *smb_fname)
1654 {
1655         int ret;
1656
1657         ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1658         if (ret == -1 && errno == EACCES) {
1659                 DEBUG(10, ("Trying lstat with capability for %s\n",
1660                            smb_fname->base_name));
1661                 ret = stat_with_capability(handle, smb_fname,
1662                                            AT_SYMLINK_NOFOLLOW);
1663         }
1664         return ret;
1665 }
1666
1667 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1668                                   int idx, int *flags)
1669 {
1670         if (!is_omit_timespec(&ts)) {
1671                 *flags |= 1 << idx;
1672                 gt[idx].tv_sec = ts.tv_sec;
1673                 gt[idx].tv_nsec = ts.tv_nsec;
1674                 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1675         }
1676 }
1677
1678 static int smbd_gpfs_set_times(struct files_struct *fsp,
1679                                struct smb_file_time *ft)
1680 {
1681         gpfs_timestruc_t gpfs_times[4];
1682         int flags = 0;
1683         int rc;
1684
1685         ZERO_ARRAY(gpfs_times);
1686         timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1687         timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1688         /* No good mapping from LastChangeTime to ctime, not storing */
1689         timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1690
1691         if (!flags) {
1692                 DBG_DEBUG("nothing to do, return to avoid EINVAL\n");
1693                 return 0;
1694         }
1695
1696         if (!fsp->fsp_flags.is_pathref) {
1697                 rc = gpfswrap_set_times(fsp_get_io_fd(fsp), flags, gpfs_times);
1698                 if (rc != 0) {
1699                         DBG_WARNING("gpfs_set_times(%s) failed: %s\n",
1700                                     fsp_str_dbg(fsp), strerror(errno));
1701                 }
1702                 return rc;
1703         }
1704
1705
1706         if (fsp->fsp_flags.have_proc_fds) {
1707                 int fd = fsp_get_pathref_fd(fsp);
1708                 const char *p = NULL;
1709                 char buf[PATH_MAX];
1710
1711                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
1712                 if (p == NULL) {
1713                         return -1;
1714                 }
1715
1716                 rc = gpfswrap_set_times_path(buf, flags, gpfs_times);
1717                 if (rc != 0) {
1718                         DBG_WARNING("gpfs_set_times_path(%s,%s) failed: %s\n",
1719                                     fsp_str_dbg(fsp), p, strerror(errno));
1720                 }
1721                 return rc;
1722         }
1723
1724         /*
1725          * This is no longer a handle based call.
1726          */
1727
1728         rc = gpfswrap_set_times_path(fsp->fsp_name->base_name,
1729                                      flags,
1730                                      gpfs_times);
1731         if (rc != 0) {
1732                 DBG_WARNING("gpfs_set_times_path(%s) failed: %s\n",
1733                             fsp_str_dbg(fsp), strerror(errno));
1734         }
1735         return rc;
1736 }
1737
1738 static int vfs_gpfs_fntimes(struct vfs_handle_struct *handle,
1739                 files_struct *fsp,
1740                 struct smb_file_time *ft)
1741 {
1742
1743         struct gpfs_winattr attrs;
1744         int ret;
1745         struct gpfs_config_data *config;
1746
1747         SMB_VFS_HANDLE_GET_DATA(handle,
1748                                 config,
1749                                 struct gpfs_config_data,
1750                                 return -1);
1751
1752         /* Try to use gpfs_set_times if it is enabled and available */
1753         if (config->settimes) {
1754                 return smbd_gpfs_set_times(fsp, ft);
1755         }
1756
1757         DBG_DEBUG("gpfs_set_times() not available or disabled, "
1758                   "use ntimes and winattr\n");
1759
1760         ret = SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
1761         if (ret == -1) {
1762                 /* don't complain if access was denied */
1763                 if (errno != EPERM && errno != EACCES) {
1764                         DBG_WARNING("SMB_VFS_NEXT_FNTIMES failed: %s",
1765                                     strerror(errno));
1766                 }
1767                 return -1;
1768         }
1769
1770         if (is_omit_timespec(&ft->create_time)) {
1771                 DBG_DEBUG("Create Time is NULL\n");
1772                 return 0;
1773         }
1774
1775         if (!config->winattr) {
1776                 return 0;
1777         }
1778
1779         attrs.winAttrs = 0;
1780         attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1781         attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1782
1783         if (!fsp->fsp_flags.is_pathref) {
1784                 ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
1785                                             GPFS_WINATTR_SET_CREATION_TIME,
1786                                             &attrs);
1787                 if (ret == -1 && errno != ENOSYS) {
1788                         DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1789                         return -1;
1790                 }
1791                 return ret;
1792         }
1793
1794         if (fsp->fsp_flags.have_proc_fds) {
1795                 int fd = fsp_get_pathref_fd(fsp);
1796                 const char *p = NULL;
1797                 char buf[PATH_MAX];
1798
1799                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
1800                 if (p == NULL) {
1801                         return -1;
1802                 }
1803
1804                 ret = gpfswrap_set_winattrs_path(p,
1805                                                  GPFS_WINATTR_SET_CREATION_TIME,
1806                                                  &attrs);
1807                 if (ret == -1 && errno != ENOSYS) {
1808                         DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1809                         return -1;
1810                 }
1811                 return ret;
1812         }
1813
1814         /*
1815          * This is no longer a handle based call.
1816          */
1817         ret = gpfswrap_set_winattrs_path(fsp->fsp_name->base_name,
1818                                          GPFS_WINATTR_SET_CREATION_TIME,
1819                                          &attrs);
1820         if (ret == -1 && errno != ENOSYS) {
1821                 DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1822                 return -1;
1823         }
1824
1825         return 0;
1826 }
1827
1828 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1829                               struct files_struct *fsp, uint32_t mode,
1830                               off_t offset, off_t len)
1831 {
1832         if (mode == (VFS_FALLOCATE_FL_PUNCH_HOLE|VFS_FALLOCATE_FL_KEEP_SIZE) &&
1833             !fsp->fsp_flags.is_sparse &&
1834             lp_strict_allocate(SNUM(fsp->conn))) {
1835                 /*
1836                  * This is from a ZERO_DATA request on a non-sparse
1837                  * file. GPFS does not support FL_KEEP_SIZE and thus
1838                  * cannot fill the whole again in the subsequent
1839                  * fallocate(FL_KEEP_SIZE). Deny this FL_PUNCH_HOLE
1840                  * call to not end up with a hole in a non-sparse
1841                  * file.
1842                  */
1843                 errno = ENOTSUP;
1844                 return -1;
1845         }
1846
1847         return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
1848 }
1849
1850 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1851                                 off_t len)
1852 {
1853         int result;
1854         struct gpfs_config_data *config;
1855
1856         SMB_VFS_HANDLE_GET_DATA(handle, config,
1857                                 struct gpfs_config_data,
1858                                 return -1);
1859
1860         if (!config->ftruncate) {
1861                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1862         }
1863
1864         result = gpfswrap_ftruncate(fsp_get_io_fd(fsp), len);
1865         if ((result == -1) && (errno == ENOSYS)) {
1866                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1867         }
1868         return result;
1869 }
1870
1871 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1872                                 const struct smb_filename *fname,
1873                                 SMB_STRUCT_STAT *sbuf)
1874 {
1875         struct gpfs_winattr attrs;
1876         struct gpfs_config_data *config;
1877         int ret;
1878
1879         SMB_VFS_HANDLE_GET_DATA(handle, config,
1880                                 struct gpfs_config_data,
1881                                 return false);
1882
1883         if (!config->winattr) {
1884                 return false;
1885         }
1886
1887         ret = gpfswrap_get_winattrs_path(fname->base_name, &attrs);
1888         if (ret == -1) {
1889                 return false;
1890         }
1891
1892         if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1893                 DBG_DEBUG("%s is offline\n", fname->base_name);
1894                 return true;
1895         }
1896
1897         DBG_DEBUG("%s is online\n", fname->base_name);
1898         return false;
1899 }
1900
1901 static bool vfs_gpfs_fsp_is_offline(struct vfs_handle_struct *handle,
1902                                     struct files_struct *fsp)
1903 {
1904         struct gpfs_fsp_extension *ext;
1905
1906         ext = VFS_FETCH_FSP_EXTENSION(handle, fsp);
1907         if (ext == NULL) {
1908                 /*
1909                  * Something bad happened, always ask.
1910                  */
1911                 return vfs_gpfs_is_offline(handle, fsp->fsp_name,
1912                                            &fsp->fsp_name->st);
1913         }
1914
1915         if (ext->offline) {
1916                 /*
1917                  * As long as it's offline, ask.
1918                  */
1919                 ext->offline = vfs_gpfs_is_offline(handle, fsp->fsp_name,
1920                                                    &fsp->fsp_name->st);
1921         }
1922
1923         return ext->offline;
1924 }
1925
1926 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1927                                struct files_struct *fsp)
1928 {
1929         return vfs_gpfs_fsp_is_offline(handle, fsp);
1930 }
1931
1932 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1933                                  files_struct *fsp, const DATA_BLOB *hdr,
1934                                  off_t offset, size_t n)
1935 {
1936         if (vfs_gpfs_fsp_is_offline(handle, fsp)) {
1937                 errno = ENOSYS;
1938                 return -1;
1939         }
1940         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
1941 }
1942
1943 #ifdef O_PATH
1944 static int vfs_gpfs_check_pathref_fstat_x(struct gpfs_config_data *config,
1945                                           struct connection_struct *conn)
1946 {
1947         struct gpfs_iattr64 iattr = {0};
1948         unsigned int litemask = 0;
1949         int saved_errno;
1950         int fd;
1951         int ret;
1952
1953         fd = open(conn->connectpath, O_PATH);
1954         if (fd == -1) {
1955                 DBG_ERR("openat() of share with O_PATH failed: %s\n",
1956                         strerror(errno));
1957                 return -1;
1958         }
1959
1960         ret = gpfswrap_fstat_x(fd, &litemask, &iattr, sizeof(iattr));
1961         if (ret == 0) {
1962                 close(fd);
1963                 config->pathref_ok.gpfs_fstat_x = true;
1964                 return 0;
1965         }
1966
1967         saved_errno = errno;
1968         ret = close(fd);
1969         if (ret != 0) {
1970                 DBG_ERR("close failed: %s\n", strerror(errno));
1971                 return -1;
1972         }
1973
1974         if (saved_errno != EBADF) {
1975                 DBG_ERR("gpfswrap_fstat_x() of O_PATH handle failed: %s\n",
1976                         strerror(saved_errno));
1977                 return -1;
1978         }
1979
1980         return 0;
1981 }
1982 #endif
1983
1984 static int vfs_gpfs_check_pathref(struct gpfs_config_data *config,
1985                                   struct connection_struct *conn)
1986 {
1987 #ifndef O_PATH
1988         /*
1989          * This code path leaves all struct gpfs_config_data.pathref_ok members
1990          * initialized to false.
1991          */
1992         return 0;
1993 #else
1994         int ret;
1995
1996         ret = vfs_gpfs_check_pathref_fstat_x(config, conn);
1997         if (ret != 0) {
1998                 return -1;
1999         }
2000
2001         return 0;
2002 #endif
2003 }
2004
2005 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
2006                             const char *service, const char *user)
2007 {
2008         struct gpfs_config_data *config;
2009         int ret;
2010         bool check_fstype;
2011
2012         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
2013         if (ret < 0) {
2014                 return ret;
2015         }
2016
2017         if (IS_IPC(handle->conn)) {
2018                 return 0;
2019         }
2020
2021         gpfswrap_lib_init(0);
2022
2023         config = talloc_zero(handle->conn, struct gpfs_config_data);
2024         if (!config) {
2025                 DEBUG(0, ("talloc_zero() failed\n"));
2026                 errno = ENOMEM;
2027                 return -1;
2028         }
2029
2030         check_fstype = lp_parm_bool(SNUM(handle->conn), "gpfs",
2031                                     "check_fstype", true);
2032
2033         if (check_fstype) {
2034                 const char *connectpath = handle->conn->connectpath;
2035                 struct statfs buf = { 0 };
2036
2037                 ret = statfs(connectpath, &buf);
2038                 if (ret != 0) {
2039                         DBG_ERR("statfs failed for share %s at path %s: %s\n",
2040                                 service, connectpath, strerror(errno));
2041                         TALLOC_FREE(config);
2042                         return ret;
2043                 }
2044
2045                 if (buf.f_type != GPFS_SUPER_MAGIC) {
2046                         DBG_ERR("SMB share %s, path %s not in GPFS file system."
2047                                 " statfs magic: 0x%jx\n",
2048                                 service,
2049                                 connectpath,
2050                                 (uintmax_t)buf.f_type);
2051                         errno = EINVAL;
2052                         TALLOC_FREE(config);
2053                         return -1;
2054                 }
2055         }
2056
2057         ret = smbacl4_get_vfs_params(handle->conn, &config->nfs4_params);
2058         if (ret < 0) {
2059                 TALLOC_FREE(config);
2060                 return ret;
2061         }
2062
2063         config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2064                                         "sharemodes", true);
2065
2066         config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
2067                                         "leases", true);
2068
2069         config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
2070                                    "hsm", false);
2071
2072         config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
2073                                       "syncio", false);
2074
2075         config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
2076                                        "winattr", false);
2077
2078         config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
2079                                          "ftruncate", true);
2080
2081         config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
2082                                                "getrealfilename", true);
2083
2084         config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
2085                                           "dfreequota", false);
2086
2087         config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
2088
2089         config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2090                                         "settimes", true);
2091         config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
2092                                        "recalls", true);
2093
2094         ret = vfs_gpfs_check_pathref(config, handle->conn);
2095         if (ret != 0) {
2096                 DBG_ERR("vfs_gpfs_check_pathref() on [%s] failed\n",
2097                         handle->conn->connectpath);
2098                 TALLOC_FREE(config);
2099                 return -1;
2100         }
2101
2102         SMB_VFS_HANDLE_SET_DATA(handle, config,
2103                                 NULL, struct gpfs_config_data,
2104                                 return -1);
2105
2106         if (config->leases) {
2107                 /*
2108                  * GPFS lease code is based on kernel oplock code
2109                  * so make sure it is turned on
2110                  */
2111                 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
2112                         DEBUG(5, ("Enabling kernel oplocks for "
2113                                   "gpfs:leases to work\n"));
2114                         lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
2115                                         "true");
2116                 }
2117
2118                 /*
2119                  * as the kernel does not properly support Level II oplocks
2120                  * and GPFS leases code is based on kernel infrastructure, we
2121                  * need to turn off Level II oplocks if gpfs:leases is enabled
2122                  */
2123                 if (lp_level2_oplocks(SNUM(handle->conn))) {
2124                         DEBUG(5, ("gpfs:leases are enabled, disabling "
2125                                   "Level II oplocks\n"));
2126                         lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
2127                                         "false");
2128                 }
2129         }
2130
2131         /*
2132          * Unless we have an async implementation of get_dos_attributes turn
2133          * this off.
2134          */
2135         lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
2136
2137         return 0;
2138 }
2139
2140 static int get_gpfs_quota(const char *pathname, int type, int id,
2141                           struct gpfs_quotaInfo *qi)
2142 {
2143         int ret;
2144
2145         ret = gpfswrap_quotactl(pathname, GPFS_QCMD(Q_GETQUOTA, type), id, qi);
2146
2147         if (ret) {
2148                 if (errno == GPFS_E_NO_QUOTA_INST) {
2149                         DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
2150                 } else if (errno != ENOSYS) {
2151                         DEBUG(0, ("Get quota failed, type %d, id, %d, "
2152                                   "errno %d.\n", type, id, errno));
2153                 }
2154
2155                 return ret;
2156         }
2157
2158         DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2159                    type, id, qi->blockUsage, qi->blockHardLimit,
2160                    qi->blockSoftLimit, qi->blockGraceTime));
2161
2162         return ret;
2163 }
2164
2165 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2166                                      uint64_t *dfree, uint64_t *dsize)
2167 {
2168         uint64_t usage, limit;
2169
2170         /*
2171          * The quota reporting is done in units of 1024 byte blocks, but
2172          * sys_fsusage uses units of 512 byte blocks, adjust the block number
2173          * accordingly. Also filter possibly negative usage counts from gpfs.
2174          */
2175         usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2176         limit = (uint64_t)qi.blockHardLimit * 2;
2177
2178         /*
2179          * When the grace time for the exceeded soft block quota has been
2180          * exceeded, the soft block quota becomes an additional hard limit.
2181          */
2182         if (qi.blockSoftLimit &&
2183             qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2184                 /* report disk as full */
2185                 *dfree = 0;
2186                 *dsize = MIN(*dsize, usage);
2187         }
2188
2189         if (!qi.blockHardLimit)
2190                 return;
2191
2192         if (usage >= limit) {
2193                 /* report disk as full */
2194                 *dfree = 0;
2195                 *dsize = MIN(*dsize, usage);
2196
2197         } else {
2198                 /* limit has not been reached, determine "free space" */
2199                 *dfree = MIN(*dfree, limit - usage);
2200                 *dsize = MIN(*dsize, limit);
2201         }
2202 }
2203
2204 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle,
2205                                 const struct smb_filename *smb_fname,
2206                                 uint64_t *bsize,
2207                                 uint64_t *dfree,
2208                                 uint64_t *dsize)
2209 {
2210         struct security_unix_token *utok;
2211         struct gpfs_quotaInfo qi_user = { 0 }, qi_group = { 0 };
2212         struct gpfs_config_data *config;
2213         int err;
2214         time_t cur_time;
2215
2216         SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2217                                 return (uint64_t)-1);
2218         if (!config->dfreequota) {
2219                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2220                                               bsize, dfree, dsize);
2221         }
2222
2223         err = sys_fsusage(smb_fname->base_name, dfree, dsize);
2224         if (err) {
2225                 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2226                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2227                                               bsize, dfree, dsize);
2228         }
2229
2230         /* sys_fsusage returns units of 512 bytes */
2231         *bsize = 512;
2232
2233         DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2234                    (unsigned long long)*dfree, (unsigned long long)*dsize));
2235
2236         utok = handle->conn->session_info->unix_token;
2237
2238         err = get_gpfs_quota(smb_fname->base_name,
2239                         GPFS_USRQUOTA, utok->uid, &qi_user);
2240         if (err) {
2241                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2242                                               bsize, dfree, dsize);
2243         }
2244
2245         /*
2246          * If new files created under this folder get this folder's
2247          * GID, then available space is governed by the quota of the
2248          * folder's GID, not the primary group of the creating user.
2249          */
2250         if (VALID_STAT(smb_fname->st) &&
2251             S_ISDIR(smb_fname->st.st_ex_mode) &&
2252             smb_fname->st.st_ex_mode & S_ISGID) {
2253                 become_root();
2254                 err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
2255                                      smb_fname->st.st_ex_gid, &qi_group);
2256                 unbecome_root();
2257
2258         } else {
2259                 err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
2260                                      utok->gid, &qi_group);
2261         }
2262
2263         if (err) {
2264                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2265                                               bsize, dfree, dsize);
2266         }
2267
2268         cur_time = time(NULL);
2269
2270         /* Adjust free space and size according to quota limits. */
2271         vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2272         vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2273
2274         return *dfree / 2;
2275 }
2276
2277 static int vfs_gpfs_get_quota(vfs_handle_struct *handle,
2278                                 const struct smb_filename *smb_fname,
2279                                 enum SMB_QUOTA_TYPE qtype,
2280                                 unid_t id,
2281                                 SMB_DISK_QUOTA *dq)
2282 {
2283         switch(qtype) {
2284                 /*
2285                  * User/group quota are being used for disk-free
2286                  * determination, which in this module is done directly
2287                  * by the disk-free function. It's important that this
2288                  * module does not return wrong quota values by mistake,
2289                  * which would modify the correct values set by disk-free.
2290                  * User/group quota are also being used for processing
2291                  * NT_TRANSACT_GET_USER_QUOTA in smb1 protocol, which is
2292                  * currently not supported by this module.
2293                  */
2294                 case SMB_USER_QUOTA_TYPE:
2295                 case SMB_GROUP_QUOTA_TYPE:
2296                         errno = ENOSYS;
2297                         return -1;
2298                 default:
2299                         return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
2300                                         qtype, id, dq);
2301         }
2302 }
2303
2304 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2305                                       enum timestamp_set_resolution *p_ts_res)
2306 {
2307         struct gpfs_config_data *config;
2308         uint32_t next;
2309
2310         next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2311
2312         SMB_VFS_HANDLE_GET_DATA(handle, config,
2313                                 struct gpfs_config_data,
2314                                 return next);
2315
2316         if (config->hsm) {
2317                 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2318         }
2319         return next;
2320 }
2321
2322 static int vfs_gpfs_openat(struct vfs_handle_struct *handle,
2323                            const struct files_struct *dirfsp,
2324                            const struct smb_filename *smb_fname,
2325                            files_struct *fsp,
2326                            int flags,
2327                            mode_t mode)
2328 {
2329         struct gpfs_config_data *config = NULL;
2330         struct gpfs_fsp_extension *ext = NULL;
2331         int ret;
2332
2333         SMB_VFS_HANDLE_GET_DATA(handle, config,
2334                                 struct gpfs_config_data,
2335                                 return -1);
2336
2337         if (config->hsm && !config->recalls &&
2338             vfs_gpfs_fsp_is_offline(handle, fsp))
2339         {
2340                 DBG_DEBUG("Refusing access to offline file %s\n",
2341                           fsp_str_dbg(fsp));
2342                 errno = EACCES;
2343                 return -1;
2344         }
2345
2346         if (config->syncio) {
2347                 flags |= O_SYNC;
2348         }
2349
2350         ext = VFS_ADD_FSP_EXTENSION(handle, fsp, struct gpfs_fsp_extension,
2351                                     NULL);
2352         if (ext == NULL) {
2353                 errno = ENOMEM;
2354                 return -1;
2355         }
2356
2357         /*
2358          * Assume the file is offline until gpfs tells us it's online.
2359          */
2360         *ext = (struct gpfs_fsp_extension) { .offline = true };
2361
2362         ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
2363         if (ret == -1) {
2364                 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
2365         }
2366         return ret;
2367 }
2368
2369 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2370                               void *data, size_t n, off_t offset)
2371 {
2372         ssize_t ret;
2373         bool was_offline;
2374
2375         was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2376
2377         ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2378
2379         if ((ret != -1) && was_offline) {
2380                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2381                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2382                              fsp->fsp_name->base_name);
2383         }
2384
2385         return ret;
2386 }
2387
2388 struct vfs_gpfs_pread_state {
2389         struct files_struct *fsp;
2390         ssize_t ret;
2391         bool was_offline;
2392         struct vfs_aio_state vfs_aio_state;
2393 };
2394
2395 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2396
2397 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2398                                               TALLOC_CTX *mem_ctx,
2399                                               struct tevent_context *ev,
2400                                               struct files_struct *fsp,
2401                                               void *data, size_t n,
2402                                               off_t offset)
2403 {
2404         struct tevent_req *req, *subreq;
2405         struct vfs_gpfs_pread_state *state;
2406
2407         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2408         if (req == NULL) {
2409                 return NULL;
2410         }
2411         state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2412         state->fsp = fsp;
2413         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2414                                          n, offset);
2415         if (tevent_req_nomem(subreq, req)) {
2416                 return tevent_req_post(req, ev);
2417         }
2418         tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2419         return req;
2420 }
2421
2422 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2423 {
2424         struct tevent_req *req = tevent_req_callback_data(
2425                 subreq, struct tevent_req);
2426         struct vfs_gpfs_pread_state *state = tevent_req_data(
2427                 req, struct vfs_gpfs_pread_state);
2428
2429         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
2430         TALLOC_FREE(subreq);
2431         tevent_req_done(req);
2432 }
2433
2434 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req,
2435                                    struct vfs_aio_state *vfs_aio_state)
2436 {
2437         struct vfs_gpfs_pread_state *state = tevent_req_data(
2438                 req, struct vfs_gpfs_pread_state);
2439         struct files_struct *fsp = state->fsp;
2440
2441         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2442                 return -1;
2443         }
2444         *vfs_aio_state = state->vfs_aio_state;
2445
2446         if ((state->ret != -1) && state->was_offline) {
2447                 DEBUG(10, ("sending notify\n"));
2448                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2449                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2450                              fsp->fsp_name->base_name);
2451         }
2452
2453         return state->ret;
2454 }
2455
2456 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2457                                const void *data, size_t n, off_t offset)
2458 {
2459         ssize_t ret;
2460         bool was_offline;
2461
2462         was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2463
2464         ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2465
2466         if ((ret != -1) && was_offline) {
2467                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2468                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2469                              fsp->fsp_name->base_name);
2470         }
2471
2472         return ret;
2473 }
2474
2475 struct vfs_gpfs_pwrite_state {
2476         struct files_struct *fsp;
2477         ssize_t ret;
2478         bool was_offline;
2479         struct vfs_aio_state vfs_aio_state;
2480 };
2481
2482 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2483
2484 static struct tevent_req *vfs_gpfs_pwrite_send(
2485         struct vfs_handle_struct *handle,
2486         TALLOC_CTX *mem_ctx,
2487         struct tevent_context *ev,
2488         struct files_struct *fsp,
2489         const void *data, size_t n,
2490         off_t offset)
2491 {
2492         struct tevent_req *req, *subreq;
2493         struct vfs_gpfs_pwrite_state *state;
2494
2495         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2496         if (req == NULL) {
2497                 return NULL;
2498         }
2499         state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2500         state->fsp = fsp;
2501         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2502                                          n, offset);
2503         if (tevent_req_nomem(subreq, req)) {
2504                 return tevent_req_post(req, ev);
2505         }
2506         tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2507         return req;
2508 }
2509
2510 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2511 {
2512         struct tevent_req *req = tevent_req_callback_data(
2513                 subreq, struct tevent_req);
2514         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2515                 req, struct vfs_gpfs_pwrite_state);
2516
2517         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
2518         TALLOC_FREE(subreq);
2519         tevent_req_done(req);
2520 }
2521
2522 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req,
2523                                     struct vfs_aio_state *vfs_aio_state)
2524 {
2525         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2526                 req, struct vfs_gpfs_pwrite_state);
2527         struct files_struct *fsp = state->fsp;
2528
2529         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2530                 return -1;
2531         }
2532         *vfs_aio_state = state->vfs_aio_state;
2533
2534         if ((state->ret != -1) && state->was_offline) {
2535                 DEBUG(10, ("sending notify\n"));
2536                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2537                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2538                              fsp->fsp_name->base_name);
2539         }
2540
2541         return state->ret;
2542 }
2543
2544
2545 static struct vfs_fn_pointers vfs_gpfs_fns = {
2546         .connect_fn = vfs_gpfs_connect,
2547         .disk_free_fn = vfs_gpfs_disk_free,
2548         .get_quota_fn = vfs_gpfs_get_quota,
2549         .fs_capabilities_fn = vfs_gpfs_capabilities,
2550         .filesystem_sharemode_fn = vfs_gpfs_filesystem_sharemode,
2551         .linux_setlease_fn = vfs_gpfs_setlease,
2552         .get_real_filename_fn = vfs_gpfs_get_real_filename,
2553         .get_dos_attributes_send_fn = vfs_not_implemented_get_dos_attributes_send,
2554         .get_dos_attributes_recv_fn = vfs_not_implemented_get_dos_attributes_recv,
2555         .fget_dos_attributes_fn = vfs_gpfs_fget_dos_attributes,
2556         .fset_dos_attributes_fn = vfs_gpfs_fset_dos_attributes,
2557         .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2558         .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2559         .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2560         .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2561         .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2562         .sys_acl_delete_def_fd_fn = gpfsacl_sys_acl_delete_def_fd,
2563         .fchmod_fn = vfs_gpfs_fchmod,
2564         .close_fn = vfs_gpfs_close,
2565         .stat_fn = vfs_gpfs_stat,
2566         .lstat_fn = vfs_gpfs_lstat,
2567         .fntimes_fn = vfs_gpfs_fntimes,
2568         .aio_force_fn = vfs_gpfs_aio_force,
2569         .sendfile_fn = vfs_gpfs_sendfile,
2570         .fallocate_fn = vfs_gpfs_fallocate,
2571         .openat_fn = vfs_gpfs_openat,
2572         .pread_fn = vfs_gpfs_pread,
2573         .pread_send_fn = vfs_gpfs_pread_send,
2574         .pread_recv_fn = vfs_gpfs_pread_recv,
2575         .pwrite_fn = vfs_gpfs_pwrite,
2576         .pwrite_send_fn = vfs_gpfs_pwrite_send,
2577         .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2578         .ftruncate_fn = vfs_gpfs_ftruncate
2579 };
2580
2581 static_decl_vfs;
2582 NTSTATUS vfs_gpfs_init(TALLOC_CTX *ctx)
2583 {
2584         int ret;
2585
2586         ret = gpfswrap_init();
2587         if (ret != 0) {
2588                 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2589         }
2590
2591         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2592                                 &vfs_gpfs_fns);
2593 }