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