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_at(struct vfs_handle_struct *handle,
 292                                               struct files_struct *dirfsp,
 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_AT(
 312                         handle, dirfsp, name, 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_AT(
 318                         handle, dirfsp, name, mem_ctx, found_name);
 319         }
 320
 321         full_path_len = full_path_tos(dirfsp->fsp_name->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_AT(
 337                         handle, dirfsp, 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         DBG_DEBUG("%s/%s -> %s\n",
 358                   fsp_str_dbg(dirfsp),
 359                   name,
 360                   real_pathname);
 361
 362         name = strrchr_m(real_pathname, '/');
 363         if (name == NULL) {
 364                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 365         }
 366
 367         *found_name = talloc_strdup(mem_ctx, name+1);
 368         if (*found_name == NULL) {
 369                 return NT_STATUS_NO_MEMORY;
 370         }
 371
 372         return NT_STATUS_OK;
 373 }
 374
 375 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
 376 {
 377         unsigned int gpfs_aclflags = 0;
 378         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 379                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 380                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 381                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 382         gpfs_aclflags = control << 8;
 383         if (!(control & SEC_DESC_DACL_PRESENT))
 384                 gpfs_aclflags |= ACL4_FLAG_NULL_DACL;
 385         if (!(control & SEC_DESC_SACL_PRESENT))
 386                 gpfs_aclflags |= ACL4_FLAG_NULL_SACL;
 387         gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 388         gacl->v4Level1.acl_flags = gpfs_aclflags;
 389 }
 390
 391 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
 392 {
 393         uint16_t control = gpfs_aclflags >> 8;
 394         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 395                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 396                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 397                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 398         control |= SEC_DESC_SELF_RELATIVE;
 399         return control;
 400 }
 401
 402 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
 403 {
 404         gpfs_aclCount_t i;
 405         if (gacl==NULL)
 406         {
 407                 DEBUG(0, ("gpfs acl is NULL\n"));
 408                 return;
 409         }
 410
 411         DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
 412                       "control: %x\n",
 413                       gacl->acl_len, gacl->acl_level, gacl->acl_version,
 414                       gacl->acl_nace, gpfs_acl_flags(gacl)));
 415
 416         for(i=0; i<gacl->acl_nace; i++)
 417         {
 418                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 419                 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
 420                               "iflags:0x%x, who:%u\n",
 421                               i, gace->aceType, gace->aceFlags, gace->aceMask,
 422                               gace->aceIFlags, gace->aceWho));
 423         }
 424 }
 425
 426 static int gpfs_getacl_with_capability(struct files_struct *fsp,
 427                                        int flags,
 428                                        void *buf)
 429 {
 430         int ret, saved_errno;
 431
 432         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
 433
 434         ret = gpfswrap_getacl(fname, flags, buf);
 435         saved_errno = errno;
 436
 437         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
 438
 439         errno = saved_errno;
 440         return ret;
 441 }
 442
 443 /*
 444  * get the ACL from GPFS, allocated on the specified mem_ctx
 445  * internally retries when initial buffer was too small
 446  *
 447  * caller needs to cast result to either
 448  * raw = yes: struct gpfs_opaque_acl
 449  * raw = no: struct gpfs_acl
 450  *
 451  */
 452 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
 453                          struct files_struct *fsp,
 454                          const bool raw,
 455                          const gpfs_aclType_t type)
 456 {
 457         const char *fname = fsp->fsp_name->base_name;
 458         void *aclbuf;
 459         size_t size = 512;
 460         int ret, flags;
 461         unsigned int *len;
 462         size_t struct_size;
 463         bool use_capability = false;
 464
 465 again:
 466
 467         aclbuf = talloc_zero_size(mem_ctx, size);
 468         if (aclbuf == NULL) {
 469                 errno = ENOMEM;
 470                 return NULL;
 471         }
 472
 473         if (raw) {
 474                 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
 475                 buf->acl_type = type;
 476                 flags = GPFS_GETACL_NATIVE;
 477                 len = (unsigned int *) &(buf->acl_buffer_len);
 478                 struct_size = sizeof(struct gpfs_opaque_acl);
 479         } else {
 480                 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
 481                 buf->acl_type = type;
 482                 buf->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 483                 flags = GPFS_GETACL_STRUCT;
 484                 len = &(buf->acl_len);
 485                 /* reserve space for control flags in gpfs 3.5 and beyond */
 486                 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
 487         }
 488
 489         /* set the length of the buffer as input value */
 490         *len = size;
 491
 492         if (use_capability) {
 493                 ret = gpfs_getacl_with_capability(fsp, flags, aclbuf);
 494         } else {
 495                 ret = gpfswrap_getacl(fname, flags, aclbuf);
 496                 if ((ret != 0) && (errno == EACCES)) {
 497                         DBG_DEBUG("Retry with DAC capability for %s\n", fname);
 498                         use_capability = true;
 499                         ret = gpfs_getacl_with_capability(fsp, flags, aclbuf);
 500                 }
 501         }
 502
 503         if ((ret != 0) && (errno == ENOSPC)) {
 504                 /*
 505                  * get the size needed to accommodate the complete buffer
 506                  *
 507                  * the value returned only applies to the ACL blob in the
 508                  * struct so make sure to also have headroom for the first
 509                  * struct members by adding room for the complete struct
 510                  * (might be a few bytes too much then)
 511                  */
 512                 size = *len + struct_size;
 513                 talloc_free(aclbuf);
 514                 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
 515                 goto again;
 516         }
 517
 518         if (ret != 0) {
 519                 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
 520                           strerror(errno)));
 521                 talloc_free(aclbuf);
 522                 return NULL;
 523         }
 524
 525         return aclbuf;
 526 }
 527
 528 /* Tries to get nfs4 acls and returns SMB ACL allocated.
 529  * On failure returns 1 if it got non-NFSv4 ACL to prompt
 530  * retry with POSIX ACL checks.
 531  * On failure returns -1 if there is system (GPFS) error, check errno.
 532  * Returns 0 on success
 533  */
 534 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx,
 535                              struct files_struct *fsp,
 536                              struct SMB4ACL_T **ppacl)
 537 {
 538         const char *fname = fsp->fsp_name->base_name;
 539         gpfs_aclCount_t i;
 540         struct gpfs_acl *gacl = NULL;
 541         DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
 542
 543         /* Get the ACL */
 544         gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fsp,
 545                                                   false, 0);
 546         if (gacl == NULL) {
 547                 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
 548                            fname, strerror(errno)));
 549                 if (errno == ENODATA) {
 550                         /*
 551                          * GPFS returns ENODATA for snapshot
 552                          * directories. Retry with POSIX ACLs check.
 553                          */
 554                         return 1;
 555                 }
 556
 557                 return -1;
 558         }
 559
 560         if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
 561                 DEBUG(10, ("Got non-nfsv4 acl\n"));
 562                 /* Retry with POSIX ACLs check */
 563                 talloc_free(gacl);
 564                 return 1;
 565         }
 566
 567         *ppacl = smb_create_smb4acl(mem_ctx);
 568
 569         if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
 570                 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
 571                 smbacl4_set_controlflags(*ppacl, control);
 572         }
 573
 574         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
 575                    gacl->acl_len, gacl->acl_level, gacl->acl_version,
 576                    gacl->acl_nace, gpfs_acl_flags(gacl)));
 577
 578         for (i=0; i<gacl->acl_nace; i++) {
 579                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 580                 SMB_ACE4PROP_T smbace = { 0 };
 581                 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
 582                            "who: %d\n", gace->aceType, gace->aceIFlags,
 583                            gace->aceFlags, gace->aceMask, gace->aceWho));
 584
 585                 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
 586                         smbace.flags |= SMB_ACE4_ID_SPECIAL;
 587                         switch (gace->aceWho) {
 588                         case ACE4_SPECIAL_OWNER:
 589                                 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
 590                                 break;
 591                         case ACE4_SPECIAL_GROUP:
 592                                 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
 593                                 break;
 594                         case ACE4_SPECIAL_EVERYONE:
 595                                 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
 596                                 break;
 597                         default:
 598                                 DEBUG(8, ("invalid special gpfs id %d "
 599                                           "ignored\n", gace->aceWho));
 600                                 continue; /* don't add it */
 601                         }
 602                 } else {
 603                         if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
 604                                 smbace.who.gid = gace->aceWho;
 605                         else
 606                                 smbace.who.uid = gace->aceWho;
 607                 }
 608
 609                 /* remove redundant deny entries */
 610                 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
 611                         struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
 612                         if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
 613                             prev->aceFlags == gace->aceFlags &&
 614                             prev->aceIFlags == gace->aceIFlags &&
 615                             (gace->aceMask & prev->aceMask) == 0 &&
 616                             gace->aceWho == prev->aceWho) {
 617                                 /* it's redundant - skip it */
 618                                 continue;
 619                         }
 620                 }
 621
 622                 smbace.aceType = gace->aceType;
 623                 smbace.aceFlags = gace->aceFlags;
 624                 smbace.aceMask = gace->aceMask;
 625                 smb_add_ace4(*ppacl, &smbace);
 626         }
 627
 628         talloc_free(gacl);
 629
 630         return 0;
 631 }
 632
 633 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
 634         files_struct *fsp, uint32_t security_info,
 635         TALLOC_CTX *mem_ctx,
 636         struct security_descriptor **ppdesc)
 637 {
 638         struct SMB4ACL_T *pacl = NULL;
 639         int     result;
 640         struct gpfs_config_data *config;
 641         TALLOC_CTX *frame = talloc_stackframe();
 642         NTSTATUS status;
 643
 644         *ppdesc = NULL;
 645
 646         SMB_VFS_HANDLE_GET_DATA(handle, config,
 647                                 struct gpfs_config_data,
 648                                 return NT_STATUS_INTERNAL_ERROR);
 649
 650         if (!config->acl) {
 651                 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
 652                                                   mem_ctx, ppdesc);
 653                 TALLOC_FREE(frame);
 654                 return status;
 655         }
 656
 657         result = gpfs_get_nfs4_acl(frame, fsp, &pacl);
 658
 659         if (result == 0) {
 660                 status = smb_fget_nt_acl_nfs4(fsp, &config->nfs4_params,
 661                                               security_info,
 662                                               mem_ctx, ppdesc, pacl);
 663                 TALLOC_FREE(frame);
 664                 return status;
 665         }
 666
 667         if (result > 0) {
 668                 DEBUG(10, ("retrying with posix acl...\n"));
 669                 status = posix_fget_nt_acl(fsp, security_info,
 670                                            mem_ctx, ppdesc);
 671                 TALLOC_FREE(frame);
 672                 return status;
 673         }
 674
 675         TALLOC_FREE(frame);
 676
 677         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 678         return map_nt_error_from_unix(errno);
 679 }
 680
 681 static bool vfs_gpfs_nfs4_ace_to_gpfs_ace(SMB_ACE4PROP_T *nfs4_ace,
 682                                           struct gpfs_ace_v4 *gace,
 683                                           uid_t owner_uid)
 684 {
 685         gace->aceType = nfs4_ace->aceType;
 686         gace->aceFlags = nfs4_ace->aceFlags;
 687         gace->aceMask = nfs4_ace->aceMask;
 688
 689         if (nfs4_ace->flags & SMB_ACE4_ID_SPECIAL) {
 690                 switch(nfs4_ace->who.special_id) {
 691                 case SMB_ACE4_WHO_EVERYONE:
 692                         gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 693                         gace->aceWho = ACE4_SPECIAL_EVERYONE;
 694                         break;
 695                 case SMB_ACE4_WHO_OWNER:
 696                         /*
 697                          * With GPFS it is not possible to deny ACL or
 698                          * attribute access to the owner. Setting an
 699                          * ACL with such an entry is not possible.
 700                          * Denying ACL or attribute access for the
 701                          * owner through a named ACL entry can be
 702                          * stored in an ACL, it is just not effective.
 703                          *
 704                          * Map this case to a named entry to allow at
 705                          * least setting this ACL, which will be
 706                          * enforced by the smbd permission check. Do
 707                          * not do this for an inheriting OWNER entry,
 708                          * as this represents a CREATOR OWNER ACE. The
 709                          * remaining limitation is that CREATOR OWNER
 710                          * cannot deny ACL or attribute access.
 711                          */
 712                         if (!nfs_ace_is_inherit(nfs4_ace) &&
 713                             nfs4_ace->aceType ==
 714                                         SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
 715                             nfs4_ace->aceMask & (SMB_ACE4_READ_ATTRIBUTES|
 716                                                  SMB_ACE4_WRITE_ATTRIBUTES|
 717                                                  SMB_ACE4_READ_ACL|
 718                                                  SMB_ACE4_WRITE_ACL)) {
 719                                 gace->aceIFlags = 0;
 720                                 gace->aceWho = owner_uid;
 721                         } else {
 722                                 gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 723                                 gace->aceWho = ACE4_SPECIAL_OWNER;
 724                         }
 725                         break;
 726                 case SMB_ACE4_WHO_GROUP:
 727                         gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
 728                         gace->aceWho = ACE4_SPECIAL_GROUP;
 729                         break;
 730                 default:
 731                         DBG_WARNING("Unsupported special_id %d\n",
 732                                     nfs4_ace->who.special_id);
 733                         return false;
 734                 }
 735
 736                 return true;
 737         }
 738
 739         gace->aceIFlags = 0;
 740         gace->aceWho = (nfs4_ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) ?
 741                 nfs4_ace->who.gid : nfs4_ace->who.uid;
 742
 743         return true;
 744 }
 745
 746 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
 747                                                 files_struct *fsp,
 748                                                 struct SMB4ACL_T *smbacl,
 749                                                 bool controlflags)
 750 {
 751         struct gpfs_acl *gacl;
 752         gpfs_aclLen_t gacl_len;
 753         struct SMB4ACE_T *smbace;
 754
 755         gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
 756                 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
 757
 758         gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
 759         if (gacl == NULL) {
 760                 DEBUG(0, ("talloc failed\n"));
 761                 errno = ENOMEM;
 762                 return NULL;
 763         }
 764
 765         gacl->acl_level = GPFS_ACL_LEVEL_BASE;
 766         gacl->acl_version = GPFS_ACL_VERSION_NFS4;
 767         gacl->acl_type = GPFS_ACL_TYPE_NFS4;
 768         gacl->acl_nace = 0; /* change later... */
 769
 770         if (controlflags) {
 771                 gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
 772                 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
 773         }
 774
 775         for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
 776                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
 777                 SMB_ACE4PROP_T  *aceprop = smb_get_ace4(smbace);
 778                 bool add_ace;
 779
 780                 add_ace = vfs_gpfs_nfs4_ace_to_gpfs_ace(aceprop, gace,
 781                                                         fsp->fsp_name->st.st_ex_uid);
 782                 if (!add_ace) {
 783                         continue;
 784                 }
 785
 786                 gacl->acl_nace++;
 787         }
 788         gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
 789                 - (char *)gacl;
 790         return gacl;
 791 }
 792
 793 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
 794                                    files_struct *fsp,
 795                                    struct SMB4ACL_T *smbacl)
 796 {
 797         int ret;
 798         struct gpfs_acl *gacl;
 799         TALLOC_CTX *mem_ctx = talloc_tos();
 800
 801         gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
 802         if (gacl == NULL) { /* out of memory */
 803                 return False;
 804         }
 805         ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 806                               GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
 807
 808         if ((ret != 0) && (errno == EINVAL)) {
 809                 DEBUG(10, ("Retry without nfs41 control flags\n"));
 810                 talloc_free(gacl);
 811                 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
 812                 if (gacl == NULL) { /* out of memory */
 813                         return False;
 814                 }
 815                 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 816                                       GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
 817                                       gacl);
 818         }
 819
 820         if (ret != 0) {
 821                 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
 822                 gpfs_dumpacl(8, gacl);
 823                 return False;
 824         }
 825
 826         DEBUG(10, ("gpfs_putacl succeeded\n"));
 827         return True;
 828 }
 829
 830 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
 831 {
 832         struct gpfs_acl *acl;
 833         NTSTATUS result = NT_STATUS_ACCESS_DENIED;
 834
 835         acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
 836                                                  fsp,
 837                                                  false, 0);
 838         if (acl == NULL) {
 839                 return map_nt_error_from_unix(errno);
 840         }
 841
 842         if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
 843                 struct gpfs_config_data *config;
 844
 845                 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
 846                                  "refuse_dacl_protected", false)
 847                     && (psd->type&SEC_DESC_DACL_PROTECTED)) {
 848                         DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
 849                         talloc_free(acl);
 850                         return NT_STATUS_NOT_SUPPORTED;
 851                 }
 852
 853                 SMB_VFS_HANDLE_GET_DATA(handle, config,
 854                                         struct gpfs_config_data,
 855                                         return NT_STATUS_INTERNAL_ERROR);
 856
 857                 result = smb_set_nt_acl_nfs4(handle,
 858                         fsp, &config->nfs4_params, security_info_sent, psd,
 859                         gpfsacl_process_smbacl);
 860         } else { /* assume POSIX ACL - by default... */
 861                 result = set_nt_acl(fsp, security_info_sent, psd);
 862         }
 863
 864         talloc_free(acl);
 865         return result;
 866 }
 867
 868 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
 869 {
 870         struct gpfs_config_data *config;
 871
 872         SMB_VFS_HANDLE_GET_DATA(handle, config,
 873                                 struct gpfs_config_data,
 874                                 return NT_STATUS_INTERNAL_ERROR);
 875
 876         if (!config->acl) {
 877                 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 878         }
 879
 880         return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
 881 }
 882
 883 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
 884 {
 885         SMB_ACL_T result;
 886         gpfs_aclCount_t i;
 887
 888         result = sys_acl_init(mem_ctx);
 889         if (result == NULL) {
 890                 errno = ENOMEM;
 891                 return NULL;
 892         }
 893
 894         result->count = pacl->acl_nace;
 895         result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
 896                                      result->count);
 897         if (result->acl == NULL) {
 898                 TALLOC_FREE(result);
 899                 errno = ENOMEM;
 900                 return NULL;
 901         }
 902
 903         for (i=0; i<pacl->acl_nace; i++) {
 904                 struct smb_acl_entry *ace = &result->acl[i];
 905                 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
 906
 907                 DEBUG(10, ("Converting type %d id %lu perm %x\n",
 908                            (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
 909                            (int)g_ace->ace_perm));
 910
 911                 switch (g_ace->ace_type) {
 912                 case GPFS_ACL_USER:
 913                         ace->a_type = SMB_ACL_USER;
 914                         ace->info.user.uid = (uid_t)g_ace->ace_who;
 915                         break;
 916                 case GPFS_ACL_USER_OBJ:
 917                         ace->a_type = SMB_ACL_USER_OBJ;
 918                         break;
 919                 case GPFS_ACL_GROUP:
 920                         ace->a_type = SMB_ACL_GROUP;
 921                         ace->info.group.gid = (gid_t)g_ace->ace_who;
 922                         break;
 923                 case GPFS_ACL_GROUP_OBJ:
 924                         ace->a_type = SMB_ACL_GROUP_OBJ;
 925                         break;
 926                 case GPFS_ACL_OTHER:
 927                         ace->a_type = SMB_ACL_OTHER;
 928                         break;
 929                 case GPFS_ACL_MASK:
 930                         ace->a_type = SMB_ACL_MASK;
 931                         break;
 932                 default:
 933                         DEBUG(10, ("Got invalid ace_type: %d\n",
 934                                    g_ace->ace_type));
 935                         TALLOC_FREE(result);
 936                         errno = EINVAL;
 937                         return NULL;
 938                 }
 939
 940                 ace->a_perm = 0;
 941                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
 942                         SMB_ACL_READ : 0;
 943                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
 944                         SMB_ACL_WRITE : 0;
 945                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
 946                         SMB_ACL_EXECUTE : 0;
 947
 948                 DEBUGADD(10, ("Converted to %d perm %x\n",
 949                               ace->a_type, ace->a_perm));
 950         }
 951
 952         return result;
 953 }
 954
 955 static SMB_ACL_T gpfsacl_get_posix_acl(struct files_struct *fsp,
 956                                        gpfs_aclType_t type,
 957                                        TALLOC_CTX *mem_ctx)
 958 {
 959         struct gpfs_acl *pacl;
 960         SMB_ACL_T result = NULL;
 961
 962         pacl = vfs_gpfs_getacl(talloc_tos(), fsp, false, type);
 963
 964         if (pacl == NULL) {
 965                 DBG_DEBUG("vfs_gpfs_getacl failed for %s with %s\n",
 966                            fsp_str_dbg(fsp), strerror(errno));
 967                 if (errno == 0) {
 968                         errno = EINVAL;
 969                 }
 970                 goto done;
 971         }
 972
 973         if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
 974                 DEBUG(10, ("Got acl version %d, expected %d\n",
 975                            pacl->acl_version, GPFS_ACL_VERSION_POSIX));
 976                 errno = EINVAL;
 977                 goto done;
 978         }
 979
 980         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
 981                    pacl->acl_len, pacl->acl_level, pacl->acl_version,
 982                    pacl->acl_nace));
 983
 984         result = gpfs2smb_acl(pacl, mem_ctx);
 985         if (result != NULL) {
 986                 errno = 0;
 987         }
 988
 989  done:
 990
 991         if (pacl != NULL) {
 992                 talloc_free(pacl);
 993         }
 994         if (errno != 0) {
 995                 TALLOC_FREE(result);
 996         }
 997         return result;
 998 }
 999
1000 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
1001                                         files_struct *fsp,
1002                                         SMB_ACL_TYPE_T type,
1003                                         TALLOC_CTX *mem_ctx)
1004 {
1005         gpfs_aclType_t gpfs_type;
1006         struct gpfs_config_data *config;
1007
1008         SMB_VFS_HANDLE_GET_DATA(handle, config,
1009                                 struct gpfs_config_data,
1010                                 return NULL);
1011
1012         if (!config->acl) {
1013                 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, type, mem_ctx);
1014         }
1015
1016         switch(type) {
1017         case SMB_ACL_TYPE_ACCESS:
1018                 gpfs_type = GPFS_ACL_TYPE_ACCESS;
1019                 break;
1020         case SMB_ACL_TYPE_DEFAULT:
1021                 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
1022                 break;
1023         default:
1024                 DEBUG(0, ("Got invalid type: %d\n", type));
1025                 smb_panic("exiting");
1026         }
1027         return gpfsacl_get_posix_acl(fsp, gpfs_type, mem_ctx);
1028 }
1029
1030 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1031                                       files_struct *fsp,
1032                                       TALLOC_CTX *mem_ctx,
1033                                       char **blob_description,
1034                                       DATA_BLOB *blob)
1035 {
1036         struct gpfs_config_data *config;
1037         struct gpfs_opaque_acl *acl = NULL;
1038         DATA_BLOB aclblob;
1039         int result;
1040
1041         SMB_VFS_HANDLE_GET_DATA(handle, config,
1042                                 struct gpfs_config_data,
1043                                 return -1);
1044
1045         if (!config->acl) {
1046                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1047                                                         blob_description, blob);
1048         }
1049
1050         errno = 0;
1051         acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1052                                                 fsp,
1053                                                 true,
1054                                                 GPFS_ACL_TYPE_NFS4);
1055
1056         if (errno) {
1057                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1058                                         errno, strerror(errno)));
1059
1060                 /* EINVAL means POSIX ACL, bail out on other cases */
1061                 if (errno != EINVAL) {
1062                         return -1;
1063                 }
1064         }
1065
1066         if (acl != NULL) {
1067                 /*
1068                  * file has NFSv4 ACL
1069                  *
1070                  * we only need the actual ACL blob here
1071                  * acl_version will always be NFS4 because we asked
1072                  * for NFS4
1073                  * acl_type is only used for POSIX ACLs
1074                  */
1075                 aclblob.data = (uint8_t*) acl->acl_var_data;
1076                 aclblob.length = acl->acl_buffer_len;
1077
1078                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1079                 if (!*blob_description) {
1080                         talloc_free(acl);
1081                         errno = ENOMEM;
1082                         return -1;
1083                 }
1084
1085                 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1086                                                               aclblob, mem_ctx,
1087                                                               blob);
1088
1089                 talloc_free(acl);
1090                 return result;
1091         }
1092
1093         /* fall back to POSIX ACL */
1094         return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1095                                          blob_description, blob);
1096 }
1097
1098 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1099                                      SMB_ACL_TYPE_T type)
1100 {
1101         gpfs_aclLen_t len;
1102         struct gpfs_acl *result;
1103         int i;
1104
1105         DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1106
1107         len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1108                 sizeof(gpfs_ace_v1_t);
1109
1110         result = (struct gpfs_acl *)SMB_MALLOC(len);
1111         if (result == NULL) {
1112                 errno = ENOMEM;
1113                 return result;
1114         }
1115
1116         result->acl_len = len;
1117         result->acl_level = 0;
1118         result->acl_version = GPFS_ACL_VERSION_POSIX;
1119         result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1120                 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1121         result->acl_nace = pacl->count;
1122
1123         for (i=0; i<pacl->count; i++) {
1124                 const struct smb_acl_entry *ace = &pacl->acl[i];
1125                 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1126
1127                 DEBUG(10, ("Converting type %d perm %x\n",
1128                            (int)ace->a_type, (int)ace->a_perm));
1129
1130                 g_ace->ace_perm = 0;
1131
1132                 switch(ace->a_type) {
1133                 case SMB_ACL_USER:
1134                         g_ace->ace_type = GPFS_ACL_USER;
1135                         g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1136                         break;
1137                 case SMB_ACL_USER_OBJ:
1138                         g_ace->ace_type = GPFS_ACL_USER_OBJ;
1139                         g_ace->ace_perm |= ACL_PERM_CONTROL;
1140                         g_ace->ace_who = 0;
1141                         break;
1142                 case SMB_ACL_GROUP:
1143                         g_ace->ace_type = GPFS_ACL_GROUP;
1144                         g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1145                         break;
1146                 case SMB_ACL_GROUP_OBJ:
1147                         g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1148                         g_ace->ace_who = 0;
1149                         break;
1150                 case SMB_ACL_MASK:
1151                         g_ace->ace_type = GPFS_ACL_MASK;
1152                         g_ace->ace_perm = 0x8f;
1153                         g_ace->ace_who = 0;
1154                         break;
1155                 case SMB_ACL_OTHER:
1156                         g_ace->ace_type = GPFS_ACL_OTHER;
1157                         g_ace->ace_who = 0;
1158                         break;
1159                 default:
1160                         DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1161                         errno = EINVAL;
1162                         SAFE_FREE(result);
1163                         return NULL;
1164                 }
1165
1166                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1167                         ACL_PERM_READ : 0;
1168                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1169                         ACL_PERM_WRITE : 0;
1170                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1171                         ACL_PERM_EXECUTE : 0;
1172
1173                 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1174                               g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1175         }
1176
1177         return result;
1178 }
1179
1180 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1181                                   files_struct *fsp,
1182                                   SMB_ACL_TYPE_T type,
1183                                   SMB_ACL_T theacl)
1184 {
1185         struct gpfs_config_data *config;
1186         struct gpfs_acl *gpfs_acl = NULL;
1187         int result;
1188
1189         SMB_VFS_HANDLE_GET_DATA(handle, config,
1190                                 struct gpfs_config_data,
1191                                 return -1);
1192
1193         if (!config->acl) {
1194                 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, type, theacl);
1195         }
1196
1197         gpfs_acl = smb2gpfs_acl(theacl, type);
1198         if (gpfs_acl == NULL) {
1199                 return -1;
1200         }
1201
1202         /*
1203          * This is no longer a handle based call.
1204          */
1205         result = gpfswrap_putacl(fsp->fsp_name->base_name,
1206                                  GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA,
1207                                  gpfs_acl);
1208         SAFE_FREE(gpfs_acl);
1209         return result;
1210 }
1211
1212 static int gpfsacl_sys_acl_delete_def_fd(vfs_handle_struct *handle,
1213                                 files_struct *fsp)
1214 {
1215         struct gpfs_config_data *config;
1216
1217         SMB_VFS_HANDLE_GET_DATA(handle, config,
1218                                 struct gpfs_config_data,
1219                                 return -1);
1220
1221         if (!config->acl) {
1222                 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FD(handle, fsp);
1223         }
1224
1225         errno = ENOTSUP;
1226         return -1;
1227 }
1228
1229
1230 /*
1231  * Assumed: mode bits are shiftable and standard
1232  * Output: the new aceMask field for an smb nfs4 ace
1233  */
1234 static uint32_t gpfsacl_mask_filter(uint32_t aceType, uint32_t aceMask, uint32_t rwx)
1235 {
1236         const uint32_t posix_nfs4map[3] = {
1237                 SMB_ACE4_EXECUTE, /* execute */
1238                 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1239                 SMB_ACE4_READ_DATA /* read */
1240         };
1241         int     i;
1242         uint32_t        posix_mask = 0x01;
1243         uint32_t        posix_bit;
1244         uint32_t        nfs4_bits;
1245
1246         for(i=0; i<3; i++) {
1247                 nfs4_bits = posix_nfs4map[i];
1248                 posix_bit = rwx & posix_mask;
1249
1250                 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1251                         if (posix_bit)
1252                                 aceMask |= nfs4_bits;
1253                         else
1254                                 aceMask &= ~nfs4_bits;
1255                 } else {
1256                         /* add deny bits when suitable */
1257                         if (!posix_bit)
1258                                 aceMask |= nfs4_bits;
1259                         else
1260                                 aceMask &= ~nfs4_bits;
1261                 } /* other ace types are unexpected */
1262
1263                 posix_mask <<= 1;
1264         }
1265
1266         return aceMask;
1267 }
1268
1269 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1270                              struct files_struct *fsp,
1271                              mode_t mode)
1272 {
1273         struct smb_filename *fname = fsp->fsp_name;
1274         char *path = fsp->fsp_name->base_name;
1275         struct SMB4ACL_T *pacl = NULL;
1276         int     result;
1277         bool    haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1278         int     i;
1279         files_struct fake_fsp = { 0 }; /* TODO: rationalize parametrization */
1280         struct SMB4ACE_T *smbace;
1281         TALLOC_CTX *frame = talloc_stackframe();
1282
1283         DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1284
1285         result = gpfs_get_nfs4_acl(frame, fsp, &pacl);
1286         if (result) {
1287                 TALLOC_FREE(frame);
1288                 return result;
1289         }
1290
1291         if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1292                 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1293         }
1294
1295         for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1296                 SMB_ACE4PROP_T  *ace = smb_get_ace4(smbace);
1297                 uint32_t        specid = ace->who.special_id;
1298
1299                 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1300                     ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1301                     specid <= SMB_ACE4_WHO_EVERYONE) {
1302
1303                         uint32_t newMask;
1304
1305                         if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1306                                 haveAllowEntry[specid] = True;
1307
1308                         /* mode >> 6 for @owner, mode >> 3 for @group,
1309                          * mode >> 0 for @everyone */
1310                         newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1311                                                       mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1312                         if (ace->aceMask!=newMask) {
1313                                 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1314                                            path, ace->aceMask, newMask, specid));
1315                         }
1316                         ace->aceMask = newMask;
1317                 }
1318         }
1319
1320         /* make sure we have at least ALLOW entries
1321          * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1322          * - if necessary
1323          */
1324         for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1325                 SMB_ACE4PROP_T ace = { 0 };
1326
1327                 if (haveAllowEntry[i]==True)
1328                         continue;
1329
1330                 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1331                 ace.flags |= SMB_ACE4_ID_SPECIAL;
1332                 ace.who.special_id = i;
1333
1334                 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1335                         ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1336
1337                 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1338                                                   mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1339
1340                 /* don't add unnecessary aces */
1341                 if (!ace.aceMask)
1342                         continue;
1343
1344                 /* we add it to the END - as windows expects allow aces */
1345                 smb_add_ace4(pacl, &ace);
1346                 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1347                            path, mode, i, ace.aceMask));
1348         }
1349
1350         /* don't add complementary DENY ACEs here */
1351         fake_fsp.fsp_name = synthetic_smb_fname(frame,
1352                                                 path,
1353                                                 NULL,
1354                                                 NULL,
1355                                                 fname->twrp,
1356                                                 0);
1357         if (fake_fsp.fsp_name == NULL) {
1358                 errno = ENOMEM;
1359                 TALLOC_FREE(frame);
1360                 return -1;
1361         }
1362         /* put the acl */
1363         if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1364                 TALLOC_FREE(frame);
1365                 return -1;
1366         }
1367
1368         TALLOC_FREE(frame);
1369         return 0; /* ok for [f]chmod */
1370 }
1371
1372 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1373 {
1374         SMB_STRUCT_STAT st;
1375         int rc;
1376
1377         rc = SMB_VFS_NEXT_FSTAT(handle, fsp, &st);
1378         if (rc != 0) {
1379                 return -1;
1380         }
1381
1382         /* avoid chmod() if possible, to preserve acls */
1383         if ((st.st_ex_mode & ~S_IFMT) == mode) {
1384                 return 0;
1385         }
1386
1387         rc = gpfsacl_emu_chmod(handle, fsp, mode);
1388         if (rc == 1) {
1389                 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1390         }
1391         return rc;
1392 }
1393
1394 static uint32_t vfs_gpfs_winattrs_to_dosmode(unsigned int winattrs)
1395 {
1396         uint32_t dosmode = 0;
1397
1398         if (winattrs & GPFS_WINATTR_ARCHIVE){
1399                 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1400         }
1401         if (winattrs & GPFS_WINATTR_HIDDEN){
1402                 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1403         }
1404         if (winattrs & GPFS_WINATTR_SYSTEM){
1405                 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1406         }
1407         if (winattrs & GPFS_WINATTR_READONLY){
1408                 dosmode |= FILE_ATTRIBUTE_READONLY;
1409         }
1410         if (winattrs & GPFS_WINATTR_SPARSE_FILE) {
1411                 dosmode |= FILE_ATTRIBUTE_SPARSE;
1412         }
1413         if (winattrs & GPFS_WINATTR_OFFLINE) {
1414                 dosmode |= FILE_ATTRIBUTE_OFFLINE;
1415         }
1416
1417         return dosmode;
1418 }
1419
1420 static unsigned int vfs_gpfs_dosmode_to_winattrs(uint32_t dosmode)
1421 {
1422         unsigned int winattrs = 0;
1423
1424         if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1425                 winattrs |= GPFS_WINATTR_ARCHIVE;
1426         }
1427         if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1428                 winattrs |= GPFS_WINATTR_HIDDEN;
1429         }
1430         if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1431                 winattrs |= GPFS_WINATTR_SYSTEM;
1432         }
1433         if (dosmode & FILE_ATTRIBUTE_READONLY){
1434                 winattrs |= GPFS_WINATTR_READONLY;
1435         }
1436         if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1437                 winattrs |= GPFS_WINATTR_SPARSE_FILE;
1438         }
1439         if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
1440                 winattrs |= GPFS_WINATTR_OFFLINE;
1441         }
1442
1443         return winattrs;
1444 }
1445
1446 static struct timespec gpfs_timestruc64_to_timespec(struct gpfs_timestruc64 g)
1447 {
1448         return (struct timespec) { .tv_sec = g.tv_sec, .tv_nsec = g.tv_nsec };
1449 }
1450
1451 static NTSTATUS vfs_gpfs_fget_dos_attributes(struct vfs_handle_struct *handle,
1452                                              struct files_struct *fsp,
1453                                              uint32_t *dosmode)
1454 {
1455         struct gpfs_config_data *config;
1456         int fd = fsp_get_pathref_fd(fsp);
1457         char buf[PATH_MAX];
1458         const char *p = NULL;
1459         struct gpfs_iattr64 iattr = { };
1460         unsigned int litemask = 0;
1461         struct timespec ts;
1462         int ret;
1463
1464         SMB_VFS_HANDLE_GET_DATA(handle, config,
1465                                 struct gpfs_config_data,
1466                                 return NT_STATUS_INTERNAL_ERROR);
1467
1468         if (!config->winattr) {
1469                 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1470         }
1471
1472         if (fsp->fsp_flags.is_pathref && !config->pathref_ok.gpfs_fstat_x) {
1473                 if (fsp->fsp_flags.have_proc_fds) {
1474                         p = sys_proc_fd_path(fd, buf, sizeof(buf));
1475                         if (p == NULL) {
1476                                 return NT_STATUS_NO_MEMORY;
1477                         }
1478                 } else {
1479                         p = fsp->fsp_name->base_name;
1480                 }
1481         }
1482
1483         if (p != NULL) {
1484                 ret = gpfswrap_stat_x(p, &litemask, &iattr, sizeof(iattr));
1485         } else {
1486                 ret = gpfswrap_fstat_x(fd, &litemask, &iattr, sizeof(iattr));
1487         }
1488         if (ret == -1 && errno == ENOSYS) {
1489                 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1490         }
1491
1492         if (ret == -1 && errno == EACCES) {
1493                 int saved_errno = 0;
1494
1495                 /*
1496                  * According to MS-FSA 2.1.5.1.2.1 "Algorithm to Check Access to
1497                  * an Existing File" FILE_LIST_DIRECTORY on a directory implies
1498                  * FILE_READ_ATTRIBUTES for directory entries. Being able to
1499                  * open a file implies FILE_LIST_DIRECTORY.
1500                  */
1501
1502                 set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1503
1504                 if (p != NULL) {
1505                         ret = gpfswrap_stat_x(p,
1506                                               &litemask,
1507                                               &iattr,
1508                                               sizeof(iattr));
1509                 } else {
1510                         ret = gpfswrap_fstat_x(fd,
1511                                                &litemask,
1512                                                &iattr,
1513                                                sizeof(iattr));
1514                 }
1515                 if (ret == -1) {
1516                         saved_errno = errno;
1517                 }
1518
1519                 drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1520
1521                 if (saved_errno != 0) {
1522                         errno = saved_errno;
1523                 }
1524         }
1525
1526         if (ret == -1) {
1527                 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1528                             fsp->fsp_name->base_name, strerror(errno));
1529                 return map_nt_error_from_unix(errno);
1530         }
1531
1532         ts = gpfs_timestruc64_to_timespec(iattr.ia_createtime);
1533
1534         *dosmode |= vfs_gpfs_winattrs_to_dosmode(iattr.ia_winflags);
1535         update_stat_ex_create_time(&fsp->fsp_name->st, ts);
1536
1537         return NT_STATUS_OK;
1538 }
1539
1540 static NTSTATUS vfs_gpfs_fset_dos_attributes(struct vfs_handle_struct *handle,
1541                                              struct files_struct *fsp,
1542                                              uint32_t dosmode)
1543 {
1544         struct gpfs_config_data *config;
1545         struct gpfs_winattr attrs = { };
1546         int ret;
1547
1548         SMB_VFS_HANDLE_GET_DATA(handle, config,
1549                                 struct gpfs_config_data,
1550                                 return NT_STATUS_INTERNAL_ERROR);
1551
1552         if (!config->winattr) {
1553                 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1554         }
1555
1556         attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1557
1558         if (!fsp->fsp_flags.is_pathref) {
1559                 ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
1560                                             GPFS_WINATTR_SET_ATTRS, &attrs);
1561                 if (ret == -1) {
1562                         DBG_WARNING("Setting winattrs failed for %s: %s\n",
1563                                     fsp_str_dbg(fsp), strerror(errno));
1564                         return map_nt_error_from_unix(errno);
1565                 }
1566                 return NT_STATUS_OK;
1567         }
1568
1569         if (fsp->fsp_flags.have_proc_fds) {
1570                 int fd = fsp_get_pathref_fd(fsp);
1571                 const char *p = NULL;
1572                 char buf[PATH_MAX];
1573
1574                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
1575                 if (p == NULL) {
1576                         return NT_STATUS_NO_MEMORY;
1577                 }
1578
1579                 ret = gpfswrap_set_winattrs_path(p,
1580                                                  GPFS_WINATTR_SET_ATTRS,
1581                                                  &attrs);
1582                 if (ret == -1) {
1583                         DBG_WARNING("Setting winattrs failed for [%s][%s]: %s\n",
1584                                     p, fsp_str_dbg(fsp), strerror(errno));
1585                         return map_nt_error_from_unix(errno);
1586                 }
1587                 return NT_STATUS_OK;
1588         }
1589
1590         /*
1591          * This is no longer a handle based call.
1592          */
1593         ret = gpfswrap_set_winattrs_path(fsp->fsp_name->base_name,
1594                                          GPFS_WINATTR_SET_ATTRS,
1595                                          &attrs);
1596         if (ret == -1) {
1597                 DBG_WARNING("Setting winattrs failed for [%s]: %s\n",
1598                             fsp_str_dbg(fsp), strerror(errno));
1599                 return map_nt_error_from_unix(errno);
1600         }
1601
1602         return NT_STATUS_OK;
1603 }
1604
1605 static int stat_with_capability(struct vfs_handle_struct *handle,
1606                                 struct smb_filename *smb_fname, int flag)
1607 {
1608         int fd = -1;
1609         NTSTATUS status;
1610         struct smb_filename *dir_name = NULL;
1611         struct smb_filename *rel_name = NULL;
1612         struct stat st;
1613         int ret = -1;
1614
1615         status = SMB_VFS_PARENT_PATHNAME(handle->conn,
1616                                          talloc_tos(),
1617                                          smb_fname,
1618                                          &dir_name,
1619                                          &rel_name);
1620         if (!NT_STATUS_IS_OK(status)) {
1621                 errno = map_errno_from_nt_status(status);
1622                 return -1;
1623         }
1624
1625         fd = open(dir_name->base_name, O_RDONLY, 0);
1626         if (fd == -1) {
1627                 TALLOC_FREE(dir_name);
1628                 return -1;
1629         }
1630
1631         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1632         ret = fstatat(fd, rel_name->base_name, &st, flag);
1633         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1634
1635         TALLOC_FREE(dir_name);
1636         close(fd);
1637
1638         if (ret == 0) {
1639                 init_stat_ex_from_stat(
1640                         &smb_fname->st, &st,
1641                         lp_fake_directory_create_times(SNUM(handle->conn)));
1642         }
1643
1644         return ret;
1645 }
1646
1647 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1648                          struct smb_filename *smb_fname)
1649 {
1650         int ret;
1651
1652         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1653         if (ret == -1 && errno == EACCES) {
1654                 DEBUG(10, ("Trying stat with capability for %s\n",
1655                            smb_fname->base_name));
1656                 ret = stat_with_capability(handle, smb_fname, 0);
1657         }
1658         return ret;
1659 }
1660
1661 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1662                           struct smb_filename *smb_fname)
1663 {
1664         int ret;
1665
1666         ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1667         if (ret == -1 && errno == EACCES) {
1668                 DEBUG(10, ("Trying lstat with capability for %s\n",
1669                            smb_fname->base_name));
1670                 ret = stat_with_capability(handle, smb_fname,
1671                                            AT_SYMLINK_NOFOLLOW);
1672         }
1673         return ret;
1674 }
1675
1676 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1677                                   int idx, int *flags)
1678 {
1679         if (!is_omit_timespec(&ts)) {
1680                 *flags |= 1 << idx;
1681                 gt[idx].tv_sec = ts.tv_sec;
1682                 gt[idx].tv_nsec = ts.tv_nsec;
1683                 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1684         }
1685 }
1686
1687 static int smbd_gpfs_set_times(struct files_struct *fsp,
1688                                struct smb_file_time *ft)
1689 {
1690         gpfs_timestruc_t gpfs_times[4];
1691         int flags = 0;
1692         int rc;
1693
1694         ZERO_ARRAY(gpfs_times);
1695         timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1696         timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1697         /* No good mapping from LastChangeTime to ctime, not storing */
1698         timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1699
1700         if (!flags) {
1701                 DBG_DEBUG("nothing to do, return to avoid EINVAL\n");
1702                 return 0;
1703         }
1704
1705         if (!fsp->fsp_flags.is_pathref) {
1706                 rc = gpfswrap_set_times(fsp_get_io_fd(fsp), flags, gpfs_times);
1707                 if (rc != 0) {
1708                         DBG_WARNING("gpfs_set_times(%s) failed: %s\n",
1709                                     fsp_str_dbg(fsp), strerror(errno));
1710                 }
1711                 return rc;
1712         }
1713
1714
1715         if (fsp->fsp_flags.have_proc_fds) {
1716                 int fd = fsp_get_pathref_fd(fsp);
1717                 const char *p = NULL;
1718                 char buf[PATH_MAX];
1719
1720                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
1721                 if (p == NULL) {
1722                         return -1;
1723                 }
1724
1725                 rc = gpfswrap_set_times_path(buf, flags, gpfs_times);
1726                 if (rc != 0) {
1727                         DBG_WARNING("gpfs_set_times_path(%s,%s) failed: %s\n",
1728                                     fsp_str_dbg(fsp), p, strerror(errno));
1729                 }
1730                 return rc;
1731         }
1732
1733         /*
1734          * This is no longer a handle based call.
1735          */
1736
1737         rc = gpfswrap_set_times_path(fsp->fsp_name->base_name,
1738                                      flags,
1739                                      gpfs_times);
1740         if (rc != 0) {
1741                 DBG_WARNING("gpfs_set_times_path(%s) failed: %s\n",
1742                             fsp_str_dbg(fsp), strerror(errno));
1743         }
1744         return rc;
1745 }
1746
1747 static int vfs_gpfs_fntimes(struct vfs_handle_struct *handle,
1748                 files_struct *fsp,
1749                 struct smb_file_time *ft)
1750 {
1751
1752         struct gpfs_winattr attrs;
1753         int ret;
1754         struct gpfs_config_data *config;
1755
1756         SMB_VFS_HANDLE_GET_DATA(handle,
1757                                 config,
1758                                 struct gpfs_config_data,
1759                                 return -1);
1760
1761         /* Try to use gpfs_set_times if it is enabled and available */
1762         if (config->settimes) {
1763                 return smbd_gpfs_set_times(fsp, ft);
1764         }
1765
1766         DBG_DEBUG("gpfs_set_times() not available or disabled, "
1767                   "use ntimes and winattr\n");
1768
1769         ret = SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
1770         if (ret == -1) {
1771                 /* don't complain if access was denied */
1772                 if (errno != EPERM && errno != EACCES) {
1773                         DBG_WARNING("SMB_VFS_NEXT_FNTIMES failed: %s",
1774                                     strerror(errno));
1775                 }
1776                 return -1;
1777         }
1778
1779         if (is_omit_timespec(&ft->create_time)) {
1780                 DBG_DEBUG("Create Time is NULL\n");
1781                 return 0;
1782         }
1783
1784         if (!config->winattr) {
1785                 return 0;
1786         }
1787
1788         attrs.winAttrs = 0;
1789         attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1790         attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1791
1792         if (!fsp->fsp_flags.is_pathref) {
1793                 ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
1794                                             GPFS_WINATTR_SET_CREATION_TIME,
1795                                             &attrs);
1796                 if (ret == -1 && errno != ENOSYS) {
1797                         DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1798                         return -1;
1799                 }
1800                 return ret;
1801         }
1802
1803         if (fsp->fsp_flags.have_proc_fds) {
1804                 int fd = fsp_get_pathref_fd(fsp);
1805                 const char *p = NULL;
1806                 char buf[PATH_MAX];
1807
1808                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
1809                 if (p == NULL) {
1810                         return -1;
1811                 }
1812
1813                 ret = gpfswrap_set_winattrs_path(p,
1814                                                  GPFS_WINATTR_SET_CREATION_TIME,
1815                                                  &attrs);
1816                 if (ret == -1 && errno != ENOSYS) {
1817                         DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1818                         return -1;
1819                 }
1820                 return ret;
1821         }
1822
1823         /*
1824          * This is no longer a handle based call.
1825          */
1826         ret = gpfswrap_set_winattrs_path(fsp->fsp_name->base_name,
1827                                          GPFS_WINATTR_SET_CREATION_TIME,
1828                                          &attrs);
1829         if (ret == -1 && errno != ENOSYS) {
1830                 DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
1831                 return -1;
1832         }
1833
1834         return 0;
1835 }
1836
1837 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1838                               struct files_struct *fsp, uint32_t mode,
1839                               off_t offset, off_t len)
1840 {
1841         if (mode == (VFS_FALLOCATE_FL_PUNCH_HOLE|VFS_FALLOCATE_FL_KEEP_SIZE) &&
1842             !fsp->fsp_flags.is_sparse &&
1843             lp_strict_allocate(SNUM(fsp->conn))) {
1844                 /*
1845                  * This is from a ZERO_DATA request on a non-sparse
1846                  * file. GPFS does not support FL_KEEP_SIZE and thus
1847                  * cannot fill the whole again in the subsequent
1848                  * fallocate(FL_KEEP_SIZE). Deny this FL_PUNCH_HOLE
1849                  * call to not end up with a hole in a non-sparse
1850                  * file.
1851                  */
1852                 errno = ENOTSUP;
1853                 return -1;
1854         }
1855
1856         return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
1857 }
1858
1859 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1860                                 off_t len)
1861 {
1862         int result;
1863         struct gpfs_config_data *config;
1864
1865         SMB_VFS_HANDLE_GET_DATA(handle, config,
1866                                 struct gpfs_config_data,
1867                                 return -1);
1868
1869         if (!config->ftruncate) {
1870                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1871         }
1872
1873         result = gpfswrap_ftruncate(fsp_get_io_fd(fsp), len);
1874         if ((result == -1) && (errno == ENOSYS)) {
1875                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1876         }
1877         return result;
1878 }
1879
1880 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1881                                 const struct smb_filename *fname,
1882                                 SMB_STRUCT_STAT *sbuf)
1883 {
1884         struct gpfs_winattr attrs;
1885         struct gpfs_config_data *config;
1886         int ret;
1887
1888         SMB_VFS_HANDLE_GET_DATA(handle, config,
1889                                 struct gpfs_config_data,
1890                                 return false);
1891
1892         if (!config->winattr) {
1893                 return false;
1894         }
1895
1896         ret = gpfswrap_get_winattrs_path(fname->base_name, &attrs);
1897         if (ret == -1) {
1898                 return false;
1899         }
1900
1901         if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1902                 DBG_DEBUG("%s is offline\n", fname->base_name);
1903                 return true;
1904         }
1905
1906         DBG_DEBUG("%s is online\n", fname->base_name);
1907         return false;
1908 }
1909
1910 static bool vfs_gpfs_fsp_is_offline(struct vfs_handle_struct *handle,
1911                                     struct files_struct *fsp)
1912 {
1913         struct gpfs_fsp_extension *ext;
1914
1915         ext = VFS_FETCH_FSP_EXTENSION(handle, fsp);
1916         if (ext == NULL) {
1917                 /*
1918                  * Something bad happened, always ask.
1919                  */
1920                 return vfs_gpfs_is_offline(handle, fsp->fsp_name,
1921                                            &fsp->fsp_name->st);
1922         }
1923
1924         if (ext->offline) {
1925                 /*
1926                  * As long as it's offline, ask.
1927                  */
1928                 ext->offline = vfs_gpfs_is_offline(handle, fsp->fsp_name,
1929                                                    &fsp->fsp_name->st);
1930         }
1931
1932         return ext->offline;
1933 }
1934
1935 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1936                                struct files_struct *fsp)
1937 {
1938         return vfs_gpfs_fsp_is_offline(handle, fsp);
1939 }
1940
1941 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1942                                  files_struct *fsp, const DATA_BLOB *hdr,
1943                                  off_t offset, size_t n)
1944 {
1945         if (vfs_gpfs_fsp_is_offline(handle, fsp)) {
1946                 errno = ENOSYS;
1947                 return -1;
1948         }
1949         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
1950 }
1951
1952 #ifdef O_PATH
1953 static int vfs_gpfs_check_pathref_fstat_x(struct gpfs_config_data *config,
1954                                           struct connection_struct *conn)
1955 {
1956         struct gpfs_iattr64 iattr = {0};
1957         unsigned int litemask = 0;
1958         int saved_errno;
1959         int fd;
1960         int ret;
1961
1962         fd = open(conn->connectpath, O_PATH);
1963         if (fd == -1) {
1964                 DBG_ERR("openat() of share with O_PATH failed: %s\n",
1965                         strerror(errno));
1966                 return -1;
1967         }
1968
1969         ret = gpfswrap_fstat_x(fd, &litemask, &iattr, sizeof(iattr));
1970         if (ret == 0) {
1971                 close(fd);
1972                 config->pathref_ok.gpfs_fstat_x = true;
1973                 return 0;
1974         }
1975
1976         saved_errno = errno;
1977         ret = close(fd);
1978         if (ret != 0) {
1979                 DBG_ERR("close failed: %s\n", strerror(errno));
1980                 return -1;
1981         }
1982
1983         if (saved_errno != EBADF) {
1984                 DBG_ERR("gpfswrap_fstat_x() of O_PATH handle failed: %s\n",
1985                         strerror(saved_errno));
1986                 return -1;
1987         }
1988
1989         return 0;
1990 }
1991 #endif
1992
1993 static int vfs_gpfs_check_pathref(struct gpfs_config_data *config,
1994                                   struct connection_struct *conn)
1995 {
1996 #ifndef O_PATH
1997         /*
1998          * This code path leaves all struct gpfs_config_data.pathref_ok members
1999          * initialized to false.
2000          */
2001         return 0;
2002 #else
2003         int ret;
2004
2005         ret = vfs_gpfs_check_pathref_fstat_x(config, conn);
2006         if (ret != 0) {
2007                 return -1;
2008         }
2009
2010         return 0;
2011 #endif
2012 }
2013
2014 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
2015                             const char *service, const char *user)
2016 {
2017         struct gpfs_config_data *config;
2018         int ret;
2019         bool check_fstype;
2020
2021         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
2022         if (ret < 0) {
2023                 return ret;
2024         }
2025
2026         if (IS_IPC(handle->conn)) {
2027                 return 0;
2028         }
2029
2030         gpfswrap_lib_init(0);
2031
2032         config = talloc_zero(handle->conn, struct gpfs_config_data);
2033         if (!config) {
2034                 DEBUG(0, ("talloc_zero() failed\n"));
2035                 errno = ENOMEM;
2036                 return -1;
2037         }
2038
2039         check_fstype = lp_parm_bool(SNUM(handle->conn), "gpfs",
2040                                     "check_fstype", true);
2041
2042         if (check_fstype) {
2043                 const char *connectpath = handle->conn->connectpath;
2044                 struct statfs buf = { 0 };
2045
2046                 ret = statfs(connectpath, &buf);
2047                 if (ret != 0) {
2048                         DBG_ERR("statfs failed for share %s at path %s: %s\n",
2049                                 service, connectpath, strerror(errno));
2050                         TALLOC_FREE(config);
2051                         return ret;
2052                 }
2053
2054                 if (buf.f_type != GPFS_SUPER_MAGIC) {
2055                         DBG_ERR("SMB share %s, path %s not in GPFS file system."
2056                                 " statfs magic: 0x%jx\n",
2057                                 service,
2058                                 connectpath,
2059                                 (uintmax_t)buf.f_type);
2060                         errno = EINVAL;
2061                         TALLOC_FREE(config);
2062                         return -1;
2063                 }
2064         }
2065
2066         ret = smbacl4_get_vfs_params(handle->conn, &config->nfs4_params);
2067         if (ret < 0) {
2068                 TALLOC_FREE(config);
2069                 return ret;
2070         }
2071
2072         config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2073                                         "sharemodes", true);
2074
2075         config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
2076                                         "leases", true);
2077
2078         config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
2079                                    "hsm", false);
2080
2081         config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
2082                                       "syncio", false);
2083
2084         config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
2085                                        "winattr", false);
2086
2087         config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
2088                                          "ftruncate", true);
2089
2090         config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
2091                                                "getrealfilename", true);
2092
2093         config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
2094                                           "dfreequota", false);
2095
2096         config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
2097
2098         config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2099                                         "settimes", true);
2100         config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
2101                                        "recalls", true);
2102
2103         ret = vfs_gpfs_check_pathref(config, handle->conn);
2104         if (ret != 0) {
2105                 DBG_ERR("vfs_gpfs_check_pathref() on [%s] failed\n",
2106                         handle->conn->connectpath);
2107                 TALLOC_FREE(config);
2108                 return -1;
2109         }
2110
2111         SMB_VFS_HANDLE_SET_DATA(handle, config,
2112                                 NULL, struct gpfs_config_data,
2113                                 return -1);
2114
2115         if (config->leases) {
2116                 /*
2117                  * GPFS lease code is based on kernel oplock code
2118                  * so make sure it is turned on
2119                  */
2120                 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
2121                         DEBUG(5, ("Enabling kernel oplocks for "
2122                                   "gpfs:leases to work\n"));
2123                         lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
2124                                         "true");
2125                 }
2126
2127                 /*
2128                  * as the kernel does not properly support Level II oplocks
2129                  * and GPFS leases code is based on kernel infrastructure, we
2130                  * need to turn off Level II oplocks if gpfs:leases is enabled
2131                  */
2132                 if (lp_level2_oplocks(SNUM(handle->conn))) {
2133                         DEBUG(5, ("gpfs:leases are enabled, disabling "
2134                                   "Level II oplocks\n"));
2135                         lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
2136                                         "false");
2137                 }
2138         }
2139
2140         /*
2141          * Unless we have an async implementation of get_dos_attributes turn
2142          * this off.
2143          */
2144         lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
2145
2146         return 0;
2147 }
2148
2149 static int get_gpfs_quota(const char *pathname, int type, int id,
2150                           struct gpfs_quotaInfo *qi)
2151 {
2152         int ret;
2153
2154         ret = gpfswrap_quotactl(pathname, GPFS_QCMD(Q_GETQUOTA, type), id, qi);
2155
2156         if (ret) {
2157                 if (errno == GPFS_E_NO_QUOTA_INST) {
2158                         DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
2159                 } else if (errno != ENOSYS) {
2160                         DEBUG(0, ("Get quota failed, type %d, id, %d, "
2161                                   "errno %d.\n", type, id, errno));
2162                 }
2163
2164                 return ret;
2165         }
2166
2167         DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2168                    type, id, qi->blockUsage, qi->blockHardLimit,
2169                    qi->blockSoftLimit, qi->blockGraceTime));
2170
2171         return ret;
2172 }
2173
2174 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2175                                      uint64_t *dfree, uint64_t *dsize)
2176 {
2177         uint64_t usage, limit;
2178
2179         /*
2180          * The quota reporting is done in units of 1024 byte blocks, but
2181          * sys_fsusage uses units of 512 byte blocks, adjust the block number
2182          * accordingly. Also filter possibly negative usage counts from gpfs.
2183          */
2184         usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2185         limit = (uint64_t)qi.blockHardLimit * 2;
2186
2187         /*
2188          * When the grace time for the exceeded soft block quota has been
2189          * exceeded, the soft block quota becomes an additional hard limit.
2190          */
2191         if (qi.blockSoftLimit &&
2192             qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2193                 /* report disk as full */
2194                 *dfree = 0;
2195                 *dsize = MIN(*dsize, usage);
2196         }
2197
2198         if (!qi.blockHardLimit)
2199                 return;
2200
2201         if (usage >= limit) {
2202                 /* report disk as full */
2203                 *dfree = 0;
2204                 *dsize = MIN(*dsize, usage);
2205
2206         } else {
2207                 /* limit has not been reached, determine "free space" */
2208                 *dfree = MIN(*dfree, limit - usage);
2209                 *dsize = MIN(*dsize, limit);
2210         }
2211 }
2212
2213 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle,
2214                                 const struct smb_filename *smb_fname,
2215                                 uint64_t *bsize,
2216                                 uint64_t *dfree,
2217                                 uint64_t *dsize)
2218 {
2219         struct security_unix_token *utok;
2220         struct gpfs_quotaInfo qi_user = { 0 }, qi_group = { 0 };
2221         struct gpfs_config_data *config;
2222         int err;
2223         time_t cur_time;
2224
2225         SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2226                                 return (uint64_t)-1);
2227         if (!config->dfreequota) {
2228                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2229                                               bsize, dfree, dsize);
2230         }
2231
2232         err = sys_fsusage(smb_fname->base_name, dfree, dsize);
2233         if (err) {
2234                 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2235                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2236                                               bsize, dfree, dsize);
2237         }
2238
2239         /* sys_fsusage returns units of 512 bytes */
2240         *bsize = 512;
2241
2242         DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2243                    (unsigned long long)*dfree, (unsigned long long)*dsize));
2244
2245         utok = handle->conn->session_info->unix_token;
2246
2247         err = get_gpfs_quota(smb_fname->base_name,
2248                         GPFS_USRQUOTA, utok->uid, &qi_user);
2249         if (err) {
2250                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2251                                               bsize, dfree, dsize);
2252         }
2253
2254         /*
2255          * If new files created under this folder get this folder's
2256          * GID, then available space is governed by the quota of the
2257          * folder's GID, not the primary group of the creating user.
2258          */
2259         if (VALID_STAT(smb_fname->st) &&
2260             S_ISDIR(smb_fname->st.st_ex_mode) &&
2261             smb_fname->st.st_ex_mode & S_ISGID) {
2262                 become_root();
2263                 err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
2264                                      smb_fname->st.st_ex_gid, &qi_group);
2265                 unbecome_root();
2266
2267         } else {
2268                 err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
2269                                      utok->gid, &qi_group);
2270         }
2271
2272         if (err) {
2273                 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2274                                               bsize, dfree, dsize);
2275         }
2276
2277         cur_time = time(NULL);
2278
2279         /* Adjust free space and size according to quota limits. */
2280         vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2281         vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2282
2283         return *dfree / 2;
2284 }
2285
2286 static int vfs_gpfs_get_quota(vfs_handle_struct *handle,
2287                                 const struct smb_filename *smb_fname,
2288                                 enum SMB_QUOTA_TYPE qtype,
2289                                 unid_t id,
2290                                 SMB_DISK_QUOTA *dq)
2291 {
2292         switch(qtype) {
2293                 /*
2294                  * User/group quota are being used for disk-free
2295                  * determination, which in this module is done directly
2296                  * by the disk-free function. It's important that this
2297                  * module does not return wrong quota values by mistake,
2298                  * which would modify the correct values set by disk-free.
2299                  * User/group quota are also being used for processing
2300                  * NT_TRANSACT_GET_USER_QUOTA in smb1 protocol, which is
2301                  * currently not supported by this module.
2302                  */
2303                 case SMB_USER_QUOTA_TYPE:
2304                 case SMB_GROUP_QUOTA_TYPE:
2305                         errno = ENOSYS;
2306                         return -1;
2307                 default:
2308                         return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
2309                                         qtype, id, dq);
2310         }
2311 }
2312
2313 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2314                                       enum timestamp_set_resolution *p_ts_res)
2315 {
2316         struct gpfs_config_data *config;
2317         uint32_t next;
2318
2319         next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2320
2321         SMB_VFS_HANDLE_GET_DATA(handle, config,
2322                                 struct gpfs_config_data,
2323                                 return next);
2324
2325         if (config->hsm) {
2326                 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2327         }
2328         return next;
2329 }
2330
2331 static int vfs_gpfs_openat(struct vfs_handle_struct *handle,
2332                            const struct files_struct *dirfsp,
2333                            const struct smb_filename *smb_fname,
2334                            files_struct *fsp,
2335                            int flags,
2336                            mode_t mode)
2337 {
2338         struct gpfs_config_data *config = NULL;
2339         struct gpfs_fsp_extension *ext = NULL;
2340         int ret;
2341
2342         SMB_VFS_HANDLE_GET_DATA(handle, config,
2343                                 struct gpfs_config_data,
2344                                 return -1);
2345
2346         if (config->hsm && !config->recalls &&
2347             !fsp->fsp_flags.is_pathref &&
2348             vfs_gpfs_fsp_is_offline(handle, fsp))
2349         {
2350                 DBG_DEBUG("Refusing access to offline file %s\n",
2351                           fsp_str_dbg(fsp));
2352                 errno = EACCES;
2353                 return -1;
2354         }
2355
2356         if (config->syncio) {
2357                 flags |= O_SYNC;
2358         }
2359
2360         ext = VFS_ADD_FSP_EXTENSION(handle, fsp, struct gpfs_fsp_extension,
2361                                     NULL);
2362         if (ext == NULL) {
2363                 errno = ENOMEM;
2364                 return -1;
2365         }
2366
2367         /*
2368          * Assume the file is offline until gpfs tells us it's online.
2369          */
2370         *ext = (struct gpfs_fsp_extension) { .offline = true };
2371
2372         ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
2373         if (ret == -1) {
2374                 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
2375         }
2376         return ret;
2377 }
2378
2379 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2380                               void *data, size_t n, off_t offset)
2381 {
2382         ssize_t ret;
2383         bool was_offline;
2384
2385         was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2386
2387         ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2388
2389         if ((ret != -1) && was_offline) {
2390                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2391                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2392                              fsp->fsp_name->base_name);
2393         }
2394
2395         return ret;
2396 }
2397
2398 struct vfs_gpfs_pread_state {
2399         struct files_struct *fsp;
2400         ssize_t ret;
2401         bool was_offline;
2402         struct vfs_aio_state vfs_aio_state;
2403 };
2404
2405 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2406
2407 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2408                                               TALLOC_CTX *mem_ctx,
2409                                               struct tevent_context *ev,
2410                                               struct files_struct *fsp,
2411                                               void *data, size_t n,
2412                                               off_t offset)
2413 {
2414         struct tevent_req *req, *subreq;
2415         struct vfs_gpfs_pread_state *state;
2416
2417         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2418         if (req == NULL) {
2419                 return NULL;
2420         }
2421         state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2422         state->fsp = fsp;
2423         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2424                                          n, offset);
2425         if (tevent_req_nomem(subreq, req)) {
2426                 return tevent_req_post(req, ev);
2427         }
2428         tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2429         return req;
2430 }
2431
2432 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2433 {
2434         struct tevent_req *req = tevent_req_callback_data(
2435                 subreq, struct tevent_req);
2436         struct vfs_gpfs_pread_state *state = tevent_req_data(
2437                 req, struct vfs_gpfs_pread_state);
2438
2439         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
2440         TALLOC_FREE(subreq);
2441         tevent_req_done(req);
2442 }
2443
2444 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req,
2445                                    struct vfs_aio_state *vfs_aio_state)
2446 {
2447         struct vfs_gpfs_pread_state *state = tevent_req_data(
2448                 req, struct vfs_gpfs_pread_state);
2449         struct files_struct *fsp = state->fsp;
2450
2451         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2452                 return -1;
2453         }
2454         *vfs_aio_state = state->vfs_aio_state;
2455
2456         if ((state->ret != -1) && state->was_offline) {
2457                 DEBUG(10, ("sending notify\n"));
2458                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2459                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2460                              fsp->fsp_name->base_name);
2461         }
2462
2463         return state->ret;
2464 }
2465
2466 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2467                                const void *data, size_t n, off_t offset)
2468 {
2469         ssize_t ret;
2470         bool was_offline;
2471
2472         was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2473
2474         ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2475
2476         if ((ret != -1) && was_offline) {
2477                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2478                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2479                              fsp->fsp_name->base_name);
2480         }
2481
2482         return ret;
2483 }
2484
2485 struct vfs_gpfs_pwrite_state {
2486         struct files_struct *fsp;
2487         ssize_t ret;
2488         bool was_offline;
2489         struct vfs_aio_state vfs_aio_state;
2490 };
2491
2492 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2493
2494 static struct tevent_req *vfs_gpfs_pwrite_send(
2495         struct vfs_handle_struct *handle,
2496         TALLOC_CTX *mem_ctx,
2497         struct tevent_context *ev,
2498         struct files_struct *fsp,
2499         const void *data, size_t n,
2500         off_t offset)
2501 {
2502         struct tevent_req *req, *subreq;
2503         struct vfs_gpfs_pwrite_state *state;
2504
2505         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2506         if (req == NULL) {
2507                 return NULL;
2508         }
2509         state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2510         state->fsp = fsp;
2511         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2512                                          n, offset);
2513         if (tevent_req_nomem(subreq, req)) {
2514                 return tevent_req_post(req, ev);
2515         }
2516         tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2517         return req;
2518 }
2519
2520 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2521 {
2522         struct tevent_req *req = tevent_req_callback_data(
2523                 subreq, struct tevent_req);
2524         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2525                 req, struct vfs_gpfs_pwrite_state);
2526
2527         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
2528         TALLOC_FREE(subreq);
2529         tevent_req_done(req);
2530 }
2531
2532 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req,
2533                                     struct vfs_aio_state *vfs_aio_state)
2534 {
2535         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2536                 req, struct vfs_gpfs_pwrite_state);
2537         struct files_struct *fsp = state->fsp;
2538
2539         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2540                 return -1;
2541         }
2542         *vfs_aio_state = state->vfs_aio_state;
2543
2544         if ((state->ret != -1) && state->was_offline) {
2545                 DEBUG(10, ("sending notify\n"));
2546                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2547                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2548                              fsp->fsp_name->base_name);
2549         }
2550
2551         return state->ret;
2552 }
2553
2554
2555 static struct vfs_fn_pointers vfs_gpfs_fns = {
2556         .connect_fn = vfs_gpfs_connect,
2557         .disk_free_fn = vfs_gpfs_disk_free,
2558         .get_quota_fn = vfs_gpfs_get_quota,
2559         .fs_capabilities_fn = vfs_gpfs_capabilities,
2560         .filesystem_sharemode_fn = vfs_gpfs_filesystem_sharemode,
2561         .linux_setlease_fn = vfs_gpfs_setlease,
2562         .get_real_filename_at_fn = vfs_gpfs_get_real_filename_at,
2563         .get_dos_attributes_send_fn = vfs_not_implemented_get_dos_attributes_send,
2564         .get_dos_attributes_recv_fn = vfs_not_implemented_get_dos_attributes_recv,
2565         .fget_dos_attributes_fn = vfs_gpfs_fget_dos_attributes,
2566         .fset_dos_attributes_fn = vfs_gpfs_fset_dos_attributes,
2567         .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2568         .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2569         .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2570         .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2571         .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2572         .sys_acl_delete_def_fd_fn = gpfsacl_sys_acl_delete_def_fd,
2573         .fchmod_fn = vfs_gpfs_fchmod,
2574         .close_fn = vfs_gpfs_close,
2575         .stat_fn = vfs_gpfs_stat,
2576         .lstat_fn = vfs_gpfs_lstat,
2577         .fntimes_fn = vfs_gpfs_fntimes,
2578         .aio_force_fn = vfs_gpfs_aio_force,
2579         .sendfile_fn = vfs_gpfs_sendfile,
2580         .fallocate_fn = vfs_gpfs_fallocate,
2581         .openat_fn = vfs_gpfs_openat,
2582         .pread_fn = vfs_gpfs_pread,
2583         .pread_send_fn = vfs_gpfs_pread_send,
2584         .pread_recv_fn = vfs_gpfs_pread_recv,
2585         .pwrite_fn = vfs_gpfs_pwrite,
2586         .pwrite_send_fn = vfs_gpfs_pwrite_send,
2587         .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2588         .ftruncate_fn = vfs_gpfs_ftruncate
2589 };
2590
2591 static_decl_vfs;
2592 NTSTATUS vfs_gpfs_init(TALLOC_CTX *ctx)
2593 {
2594         int ret;
2595
2596         ret = gpfswrap_init();
2597         if (ret != 0) {
2598                 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2599         }
2600
2601         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2602                                 &vfs_gpfs_fns);
2603 }