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