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