source3/modules/vfs_gpfs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap gpfs calls in vfs functions.
   4
   5    Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
   6
   7    Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
   8                             and Gomati Mohanan <gomati.mohanan@in.ibm.com>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "smbd/smbd.h"
  26 #include "librpc/gen_ndr/ndr_xattr.h"
  27 #include "include/smbprofile.h"
  28 #include "modules/non_posix_acls.h"
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_VFS
  32
  33 #include <gpfs_fcntl.h>
  34 #include "nfs4_acls.h"
  35 #include "vfs_gpfs.h"
  36 #include "system/filesys.h"
  37 #include "auth.h"
  38 #include "lib/util/tevent_unix.h"
  39
  40 struct gpfs_config_data {
  41         bool sharemodes;
  42         bool leases;
  43         bool hsm;
  44         bool syncio;
  45         bool winattr;
  46         bool ftruncate;
  47         bool getrealfilename;
  48         bool dfreequota;
  49         bool prealloc;
  50         bool acl;
  51         bool settimes;
  52         bool recalls;
  53 };
  54
  55 static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
  56 {
  57         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
  58                 /* gacl->v4Level1.acl_flags requires gpfs 3.5 */
  59                 return *(unsigned int *)&gacl->ace_v4;
  60         }
  61         return 0;
  62 }
  63
  64 static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
  65 {
  66         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
  67                 /* &gacl->v4Level1.ace_v4[i] requires gpfs 3.5 */
  68                 char *ptr = (char *)&gacl->ace_v4[i] + sizeof(unsigned int);
  69                 return (gpfs_ace_v4_t *)ptr;
  70         }
  71         return &gacl->ace_v4[i];
  72 }
  73
  74 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
  75                                  uint32 share_mode, uint32 access_mask)
  76 {
  77
  78         struct gpfs_config_data *config;
  79         int ret = 0;
  80
  81         START_PROFILE(syscall_kernel_flock);
  82
  83         SMB_VFS_HANDLE_GET_DATA(handle, config,
  84                                 struct gpfs_config_data,
  85                                 return -1);
  86
  87         if(!config->sharemodes) {
  88                 return 0;
  89         }
  90
  91         kernel_flock(fsp->fh->fd, share_mode, access_mask);
  92
  93         if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) {
  94                 ret = -1;
  95         }
  96
  97         END_PROFILE(syscall_kernel_flock);
  98
  99         return ret;
 100 }
 101
 102 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
 103 {
 104
 105         struct gpfs_config_data *config;
 106
 107         SMB_VFS_HANDLE_GET_DATA(handle, config,
 108                                 struct gpfs_config_data,
 109                                 return -1);
 110
 111         if (config->sharemodes && (fsp->fh != NULL) && (fsp->fh->fd != -1)) {
 112                 set_gpfs_sharemode(fsp, 0, 0);
 113         }
 114
 115         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 116 }
 117
 118 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
 119                              int leasetype)
 120 {
 121         struct gpfs_config_data *config;
 122         int ret=0;
 123
 124         START_PROFILE(syscall_linux_setlease);
 125
 126         SMB_VFS_HANDLE_GET_DATA(handle, config,
 127                                 struct gpfs_config_data,
 128                                 return -1);
 129
 130         if (linux_set_lease_sighandler(fsp->fh->fd) == -1)
 131                 return -1;
 132
 133         if (config->leases) {
 134                 /*
 135                  * Ensure the lease owner is root to allow
 136                  * correct delivery of lease-break signals.
 137                  */
 138                 become_root();
 139                 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
 140                 unbecome_root();
 141         }
 142
 143         END_PROFILE(syscall_linux_setlease);
 144
 145         return ret;
 146 }
 147
 148 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
 149                                       const char *path,
 150                                       const char *name,
 151                                       TALLOC_CTX *mem_ctx,
 152                                       char **found_name)
 153 {
 154         int result;
 155         char *full_path;
 156         char real_pathname[PATH_MAX+1];
 157         int buflen;
 158         bool mangled;
 159         struct gpfs_config_data *config;
 160
 161         SMB_VFS_HANDLE_GET_DATA(handle, config,
 162                                 struct gpfs_config_data,
 163                                 return -1);
 164
 165         if (!config->getrealfilename) {
 166                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 167                                                       mem_ctx, found_name);
 168         }
 169
 170         mangled = mangle_is_mangled(name, handle->conn->params);
 171         if (mangled) {
 172                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 173                                                       mem_ctx, found_name);
 174         }
 175
 176         full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
 177         if (full_path == NULL) {
 178                 errno = ENOMEM;
 179                 return -1;
 180         }
 181
 182         buflen = sizeof(real_pathname) - 1;
 183
 184         result = gpfswrap_get_realfilename_path(full_path, real_pathname,
 185                                                 &buflen);
 186
 187         TALLOC_FREE(full_path);
 188
 189         if ((result == -1) && (errno == ENOSYS)) {
 190                 return SMB_VFS_NEXT_GET_REAL_FILENAME(
 191                         handle, path, name, mem_ctx, found_name);
 192         }
 193
 194         if (result == -1) {
 195                 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
 196                            strerror(errno)));
 197                 return -1;
 198         }
 199
 200         /*
 201          * GPFS does not necessarily null-terminate the returned path
 202          * but instead returns the buffer length in buflen.
 203          */
 204
 205         if (buflen < sizeof(real_pathname)) {
 206                 real_pathname[buflen] = '\0';
 207         } else {
 208                 real_pathname[sizeof(real_pathname)-1] = '\0';
 209         }
 210
 211         DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
 212                    path, name, real_pathname));
 213
 214         name = strrchr_m(real_pathname, '/');
 215         if (name == NULL) {
 216                 errno = ENOENT;
 217                 return -1;
 218         }
 219
 220         *found_name = talloc_strdup(mem_ctx, name+1);
 221         if (*found_name == NULL) {
 222                 errno = ENOMEM;
 223                 return -1;
 224         }
 225
 226         return 0;
 227 }
 228
 229 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
 230 {
 231         unsigned int gpfs_aclflags = 0;
 232         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 233                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 234                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 235                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 236         gpfs_aclflags = control << 8;
 237         if (!(control & SEC_DESC_DACL_PRESENT))
 238                 gpfs_aclflags |= 0x00800000; /* ACL4_FLAG_NULL_DACL; */
 239         if (!(control & SEC_DESC_SACL_PRESENT))
 240                 gpfs_aclflags |= 0x01000000; /* ACL4_FLAG_NULL_SACL; */
 241         gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS*/
 242         /* gacl->v4Level1.acl_flags requires gpfs 3.5 */
 243         *(unsigned int *)&gacl->ace_v4 = gpfs_aclflags;
 244 }
 245
 246 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
 247 {
 248         uint16_t control = gpfs_aclflags >> 8;
 249         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 250                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 251                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 252                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 253         control |= SEC_DESC_SELF_RELATIVE;
 254         return control;
 255 }
 256
 257 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
 258 {
 259         gpfs_aclCount_t i;
 260         if (gacl==NULL)
 261         {
 262                 DEBUG(0, ("gpfs acl is NULL\n"));
 263                 return;
 264         }
 265
 266         DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
 267                       "control: %x\n",
 268                       gacl->acl_len, gacl->acl_level, gacl->acl_version,
 269                       gacl->acl_nace, gpfs_acl_flags(gacl)));
 270
 271         for(i=0; i<gacl->acl_nace; i++)
 272         {
 273                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 274                 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
 275                               "iflags:0x%x, who:%u\n",
 276                               i, gace->aceType, gace->aceFlags, gace->aceMask,
 277                               gace->aceIFlags, gace->aceWho));
 278         }
 279 }
 280
 281 /*
 282  * get the ACL from GPFS, allocated on the specified mem_ctx
 283  * internally retries when initial buffer was too small
 284  *
 285  * caller needs to cast result to either
 286  * raw = yes: struct gpfs_opaque_acl
 287  * raw = no: struct gpfs_acl
 288  *
 289  */
 290 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
 291                          const char *fname,
 292                          const bool raw,
 293                          const gpfs_aclType_t type)
 294 {
 295
 296         void *aclbuf;
 297         size_t size = 512;
 298         int ret, flags;
 299         unsigned int *len;
 300         size_t struct_size;
 301
 302 again:
 303
 304         aclbuf = talloc_zero_size(mem_ctx, size);
 305         if (aclbuf == NULL) {
 306                 errno = ENOMEM;
 307                 return NULL;
 308         }
 309
 310         if (raw) {
 311                 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
 312                 buf->acl_type = type;
 313                 flags = GPFS_GETACL_NATIVE;
 314                 len = (unsigned int *) &(buf->acl_buffer_len);
 315                 struct_size = sizeof(struct gpfs_opaque_acl);
 316         } else {
 317                 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
 318                 buf->acl_type = type;
 319                 buf->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */
 320                 flags = GPFS_GETACL_STRUCT;
 321                 len = &(buf->acl_len);
 322                 /* reserve space for control flags in gpfs 3.5 and beyond */
 323                 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
 324         }
 325
 326         /* set the length of the buffer as input value */
 327         *len = size;
 328
 329         errno = 0;
 330         ret = gpfswrap_getacl(discard_const_p(char, fname), flags, aclbuf);
 331         if ((ret != 0) && (errno == ENOSPC)) {
 332                 /*
 333                  * get the size needed to accommodate the complete buffer
 334                  *
 335                  * the value returned only applies to the ACL blob in the
 336                  * struct so make sure to also have headroom for the first
 337                  * struct members by adding room for the complete struct
 338                  * (might be a few bytes too much then)
 339                  */
 340                 size = *len + struct_size;
 341                 talloc_free(aclbuf);
 342                 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
 343                 goto again;
 344         }
 345
 346         if (ret != 0) {
 347                 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
 348                           strerror(errno)));
 349                 talloc_free(aclbuf);
 350                 return NULL;
 351         }
 352
 353         return aclbuf;
 354 }
 355
 356 /* Tries to get nfs4 acls and returns SMB ACL allocated.
 357  * On failure returns 1 if it got non-NFSv4 ACL to prompt
 358  * retry with POSIX ACL checks.
 359  * On failure returns -1 if there is system (GPFS) error, check errno.
 360  * Returns 0 on success
 361  */
 362 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx, const char *fname, SMB4ACL_T **ppacl)
 363 {
 364         gpfs_aclCount_t i;
 365         struct gpfs_acl *gacl = NULL;
 366         DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
 367
 368         /* Get the ACL */
 369         gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
 370                                                   false, 0);
 371         if (gacl == NULL) {
 372                 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
 373                            fname, strerror(errno)));
 374                 return -1;
 375         }
 376
 377         if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
 378                 DEBUG(10, ("Got non-nfsv4 acl\n"));
 379                 /* Retry with POSIX ACLs check */
 380                 talloc_free(gacl);
 381                 return 1;
 382         }
 383
 384         *ppacl = smb_create_smb4acl(mem_ctx);
 385
 386         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
 387                 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
 388                 smbacl4_set_controlflags(*ppacl, control);
 389         }
 390
 391         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
 392                    gacl->acl_len, gacl->acl_level, gacl->acl_version,
 393                    gacl->acl_nace, gpfs_acl_flags(gacl)));
 394
 395         for (i=0; i<gacl->acl_nace; i++) {
 396                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 397                 SMB_ACE4PROP_T smbace;
 398                 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
 399                            "who: %d\n", gace->aceType, gace->aceIFlags,
 400                            gace->aceFlags, gace->aceMask, gace->aceWho));
 401
 402                 ZERO_STRUCT(smbace);
 403                 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
 404                         smbace.flags |= SMB_ACE4_ID_SPECIAL;
 405                         switch (gace->aceWho) {
 406                         case ACE4_SPECIAL_OWNER:
 407                                 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
 408                                 break;
 409                         case ACE4_SPECIAL_GROUP:
 410                                 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
 411                                 break;
 412                         case ACE4_SPECIAL_EVERYONE:
 413                                 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
 414                                 break;
 415                         default:
 416                                 DEBUG(8, ("invalid special gpfs id %d "
 417                                           "ignored\n", gace->aceWho));
 418                                 continue; /* don't add it */
 419                         }
 420                 } else {
 421                         if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
 422                                 smbace.who.gid = gace->aceWho;
 423                         else
 424                                 smbace.who.uid = gace->aceWho;
 425                 }
 426
 427                 /* remove redundant deny entries */
 428                 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
 429                         struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
 430                         if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
 431                             prev->aceFlags == gace->aceFlags &&
 432                             prev->aceIFlags == gace->aceIFlags &&
 433                             (gace->aceMask & prev->aceMask) == 0 &&
 434                             gace->aceWho == prev->aceWho) {
 435                                 /* it's redundant - skip it */
 436                                 continue;
 437                         }
 438                 }
 439
 440                 smbace.aceType = gace->aceType;
 441                 smbace.aceFlags = gace->aceFlags;
 442                 smbace.aceMask = gace->aceMask;
 443                 smb_add_ace4(*ppacl, &smbace);
 444         }
 445
 446         talloc_free(gacl);
 447
 448         return 0;
 449 }
 450
 451 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
 452         files_struct *fsp, uint32 security_info,
 453         TALLOC_CTX *mem_ctx,
 454         struct security_descriptor **ppdesc)
 455 {
 456         SMB4ACL_T *pacl = NULL;
 457         int     result;
 458         struct gpfs_config_data *config;
 459         TALLOC_CTX *frame = talloc_stackframe();
 460         NTSTATUS status;
 461
 462         *ppdesc = NULL;
 463
 464         SMB_VFS_HANDLE_GET_DATA(handle, config,
 465                                 struct gpfs_config_data,
 466                                 return NT_STATUS_INTERNAL_ERROR);
 467
 468         if (!config->acl) {
 469                 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
 470                                                   mem_ctx, ppdesc);
 471                 TALLOC_FREE(frame);
 472                 return status;
 473         }
 474
 475         result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
 476
 477         if (result == 0) {
 478                 status = smb_fget_nt_acl_nfs4(fsp, security_info, mem_ctx,
 479                                               ppdesc, pacl);
 480                 TALLOC_FREE(frame);
 481                 return status;
 482         }
 483
 484         if (result > 0) {
 485                 DEBUG(10, ("retrying with posix acl...\n"));
 486                 status = posix_fget_nt_acl(fsp, security_info,
 487                                            mem_ctx, ppdesc);
 488                 TALLOC_FREE(frame);
 489                 return status;
 490         }
 491
 492         TALLOC_FREE(frame);
 493
 494         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 495         return map_nt_error_from_unix(errno);
 496 }
 497
 498 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
 499         const char *name,
 500         uint32 security_info,
 501         TALLOC_CTX *mem_ctx, struct security_descriptor **ppdesc)
 502 {
 503         SMB4ACL_T *pacl = NULL;
 504         int     result;
 505         struct gpfs_config_data *config;
 506         TALLOC_CTX *frame = talloc_stackframe();
 507         NTSTATUS status;
 508
 509         *ppdesc = NULL;
 510
 511         SMB_VFS_HANDLE_GET_DATA(handle, config,
 512                                 struct gpfs_config_data,
 513                                 return NT_STATUS_INTERNAL_ERROR);
 514
 515         if (!config->acl) {
 516                 status = SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info,
 517                                                  mem_ctx, ppdesc);
 518                 TALLOC_FREE(frame);
 519                 return status;
 520         }
 521
 522         result = gpfs_get_nfs4_acl(frame, name, &pacl);
 523
 524         if (result == 0) {
 525                 status = smb_get_nt_acl_nfs4(handle->conn, name, security_info,
 526                                            mem_ctx, ppdesc, pacl);
 527                 TALLOC_FREE(frame);
 528                 return status;
 529         }
 530
 531         if (result > 0) {
 532                 DEBUG(10, ("retrying with posix acl...\n"));
 533                 status =  posix_get_nt_acl(handle->conn, name, security_info,
 534                                            mem_ctx, ppdesc);
 535                 TALLOC_FREE(frame);
 536                 return status;
 537         }
 538
 539         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 540         TALLOC_FREE(frame);
 541         return map_nt_error_from_unix(errno);
 542 }
 543
 544 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
 545                                                 files_struct *fsp,
 546                                                 SMB4ACL_T *smbacl,
 547                                                 bool controlflags)
 548 {
 549         struct gpfs_acl *gacl;
 550         gpfs_aclLen_t gacl_len;
 551         SMB4ACE_T *smbace;
 552
 553         gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
 554                 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
 555
 556         gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
 557         if (gacl == NULL) {
 558                 DEBUG(0, ("talloc failed\n"));
 559                 errno = ENOMEM;
 560                 return NULL;
 561         }
 562
 563         gacl->acl_level = 0; /* GPFS_ACL_LEVEL_BASE */
 564         gacl->acl_version = GPFS_ACL_VERSION_NFS4;
 565         gacl->acl_type = GPFS_ACL_TYPE_NFS4;
 566         gacl->acl_nace = 0; /* change later... */
 567
 568         if (controlflags) {
 569                 gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */
 570                 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
 571         }
 572
 573         for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
 574                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
 575                 SMB_ACE4PROP_T  *aceprop = smb_get_ace4(smbace);
 576
 577                 gace->aceType = aceprop->aceType;
 578                 gace->aceFlags = aceprop->aceFlags;
 579                 gace->aceMask = aceprop->aceMask;
 580
 581                 /*
 582                  * GPFS can't distinguish between WRITE and APPEND on
 583                  * files, so one being set without the other is an
 584                  * error. Sorry for the many ()'s :-)
 585                  */
 586
 587                 if (!fsp->is_directory
 588                     &&
 589                     ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
 590                       && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
 591                      ||
 592                      (((gace->aceMask & ACE4_MASK_WRITE) != 0)
 593                       && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
 594                     &&
 595                     lp_parm_bool(fsp->conn->params->service, "gpfs",
 596                                  "merge_writeappend", True)) {
 597                         DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
 598                                   "WRITE^APPEND, setting WRITE|APPEND\n",
 599                                   fsp_str_dbg(fsp)));
 600                         gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
 601                 }
 602
 603                 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
 604
 605                 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
 606                 {
 607                         switch(aceprop->who.special_id)
 608                         {
 609                         case SMB_ACE4_WHO_EVERYONE:
 610                                 gace->aceWho = ACE4_SPECIAL_EVERYONE;
 611                                 break;
 612                         case SMB_ACE4_WHO_OWNER:
 613                                 gace->aceWho = ACE4_SPECIAL_OWNER;
 614                                 break;
 615                         case SMB_ACE4_WHO_GROUP:
 616                                 gace->aceWho = ACE4_SPECIAL_GROUP;
 617                                 break;
 618                         default:
 619                                 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
 620                                 continue; /* don't add it !!! */
 621                         }
 622                 } else {
 623                         /* just only for the type safety... */
 624                         if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
 625                                 gace->aceWho = aceprop->who.gid;
 626                         else
 627                                 gace->aceWho = aceprop->who.uid;
 628                 }
 629
 630                 gacl->acl_nace++;
 631         }
 632         gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
 633                 - (char *)gacl;
 634         return gacl;
 635 }
 636
 637 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
 638                                    files_struct *fsp,
 639                                    SMB4ACL_T *smbacl)
 640 {
 641         int ret;
 642         struct gpfs_acl *gacl;
 643         TALLOC_CTX *mem_ctx = talloc_tos();
 644
 645         gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
 646         if (gacl == NULL) { /* out of memory */
 647                 return False;
 648         }
 649         ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 650                               GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
 651
 652         if ((ret != 0) && (errno == EINVAL)) {
 653                 DEBUG(10, ("Retry without nfs41 control flags\n"));
 654                 talloc_free(gacl);
 655                 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
 656                 if (gacl == NULL) { /* out of memory */
 657                         return False;
 658                 }
 659                 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 660                                       GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
 661                                       gacl);
 662         }
 663
 664         if (ret != 0) {
 665                 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
 666                 gpfs_dumpacl(8, gacl);
 667                 return False;
 668         }
 669
 670         DEBUG(10, ("gpfs_putacl succeeded\n"));
 671         return True;
 672 }
 673
 674 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
 675 {
 676         struct gpfs_acl *acl;
 677         NTSTATUS result = NT_STATUS_ACCESS_DENIED;
 678
 679         acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
 680                                                  fsp->fsp_name->base_name,
 681                                                  false, 0);
 682         if (acl == NULL) {
 683                 return map_nt_error_from_unix(errno);
 684         }
 685
 686         if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
 687                 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
 688                                  "refuse_dacl_protected", false)
 689                     && (psd->type&SEC_DESC_DACL_PROTECTED)) {
 690                         DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
 691                         talloc_free(acl);
 692                         return NT_STATUS_NOT_SUPPORTED;
 693                 }
 694
 695                 result = smb_set_nt_acl_nfs4(handle,
 696                         fsp, security_info_sent, psd,
 697                         gpfsacl_process_smbacl);
 698         } else { /* assume POSIX ACL - by default... */
 699                 result = set_nt_acl(fsp, security_info_sent, psd);
 700         }
 701
 702         talloc_free(acl);
 703         return result;
 704 }
 705
 706 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
 707 {
 708         struct gpfs_config_data *config;
 709
 710         SMB_VFS_HANDLE_GET_DATA(handle, config,
 711                                 struct gpfs_config_data,
 712                                 return NT_STATUS_INTERNAL_ERROR);
 713
 714         if (!config->acl) {
 715                 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 716         }
 717
 718         return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
 719 }
 720
 721 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
 722 {
 723         SMB_ACL_T result;
 724         gpfs_aclCount_t i;
 725
 726         result = sys_acl_init(mem_ctx);
 727         if (result == NULL) {
 728                 errno = ENOMEM;
 729                 return NULL;
 730         }
 731
 732         result->count = pacl->acl_nace;
 733         result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
 734                                      result->count);
 735         if (result->acl == NULL) {
 736                 TALLOC_FREE(result);
 737                 errno = ENOMEM;
 738                 return NULL;
 739         }
 740
 741         for (i=0; i<pacl->acl_nace; i++) {
 742                 struct smb_acl_entry *ace = &result->acl[i];
 743                 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
 744
 745                 DEBUG(10, ("Converting type %d id %lu perm %x\n",
 746                            (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
 747                            (int)g_ace->ace_perm));
 748
 749                 switch (g_ace->ace_type) {
 750                 case GPFS_ACL_USER:
 751                         ace->a_type = SMB_ACL_USER;
 752                         ace->info.user.uid = (uid_t)g_ace->ace_who;
 753                         break;
 754                 case GPFS_ACL_USER_OBJ:
 755                         ace->a_type = SMB_ACL_USER_OBJ;
 756                         break;
 757                 case GPFS_ACL_GROUP:
 758                         ace->a_type = SMB_ACL_GROUP;
 759                         ace->info.group.gid = (gid_t)g_ace->ace_who;
 760                         break;
 761                 case GPFS_ACL_GROUP_OBJ:
 762                         ace->a_type = SMB_ACL_GROUP_OBJ;
 763                         break;
 764                 case GPFS_ACL_OTHER:
 765                         ace->a_type = SMB_ACL_OTHER;
 766                         break;
 767                 case GPFS_ACL_MASK:
 768                         ace->a_type = SMB_ACL_MASK;
 769                         break;
 770                 default:
 771                         DEBUG(10, ("Got invalid ace_type: %d\n",
 772                                    g_ace->ace_type));
 773                         TALLOC_FREE(result);
 774                         errno = EINVAL;
 775                         return NULL;
 776                 }
 777
 778                 ace->a_perm = 0;
 779                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
 780                         SMB_ACL_READ : 0;
 781                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
 782                         SMB_ACL_WRITE : 0;
 783                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
 784                         SMB_ACL_EXECUTE : 0;
 785
 786                 DEBUGADD(10, ("Converted to %d perm %x\n",
 787                               ace->a_type, ace->a_perm));
 788         }
 789
 790         return result;
 791 }
 792
 793 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type,
 794                                        TALLOC_CTX *mem_ctx)
 795 {
 796         struct gpfs_acl *pacl;
 797         SMB_ACL_T result = NULL;
 798
 799         pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
 800
 801         if (pacl == NULL) {
 802                 DEBUG(10, ("vfs_gpfs_getacl failed for %s with %s\n",
 803                            path, strerror(errno)));
 804                 if (errno == 0) {
 805                         errno = EINVAL;
 806                 }
 807                 goto done;
 808         }
 809
 810         if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
 811                 DEBUG(10, ("Got acl version %d, expected %d\n",
 812                            pacl->acl_version, GPFS_ACL_VERSION_POSIX));
 813                 errno = EINVAL;
 814                 goto done;
 815         }
 816
 817         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
 818                    pacl->acl_len, pacl->acl_level, pacl->acl_version,
 819                    pacl->acl_nace));
 820
 821         result = gpfs2smb_acl(pacl, mem_ctx);
 822         if (result != NULL) {
 823                 errno = 0;
 824         }
 825
 826  done:
 827
 828         if (pacl != NULL) {
 829                 talloc_free(pacl);
 830         }
 831         if (errno != 0) {
 832                 TALLOC_FREE(result);
 833         }
 834         return result;
 835 }
 836
 837 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
 838                                           const char *path_p,
 839                                           SMB_ACL_TYPE_T type,
 840                                           TALLOC_CTX *mem_ctx)
 841 {
 842         gpfs_aclType_t gpfs_type;
 843         struct gpfs_config_data *config;
 844
 845         SMB_VFS_HANDLE_GET_DATA(handle, config,
 846                                 struct gpfs_config_data,
 847                                 return NULL);
 848
 849         if (!config->acl) {
 850                 return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p,
 851                                                      type, mem_ctx);
 852         }
 853
 854         switch(type) {
 855         case SMB_ACL_TYPE_ACCESS:
 856                 gpfs_type = GPFS_ACL_TYPE_ACCESS;
 857                 break;
 858         case SMB_ACL_TYPE_DEFAULT:
 859                 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
 860                 break;
 861         default:
 862                 DEBUG(0, ("Got invalid type: %d\n", type));
 863                 smb_panic("exiting");
 864         }
 865
 866         return gpfsacl_get_posix_acl(path_p, gpfs_type, mem_ctx);
 867 }
 868
 869 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
 870                                         files_struct *fsp,
 871                                         TALLOC_CTX *mem_ctx)
 872 {
 873         struct gpfs_config_data *config;
 874
 875         SMB_VFS_HANDLE_GET_DATA(handle, config,
 876                                 struct gpfs_config_data,
 877                                 return NULL);
 878
 879         if (!config->acl) {
 880                 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
 881         }
 882
 883         return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
 884                                      GPFS_ACL_TYPE_ACCESS, mem_ctx);
 885 }
 886
 887 static int gpfsacl_sys_acl_blob_get_file(vfs_handle_struct *handle,
 888                                       const char *path_p,
 889                                       TALLOC_CTX *mem_ctx,
 890                                       char **blob_description,
 891                                       DATA_BLOB *blob)
 892 {
 893         struct gpfs_config_data *config;
 894         struct gpfs_opaque_acl *acl = NULL;
 895         DATA_BLOB aclblob;
 896         int result;
 897
 898         SMB_VFS_HANDLE_GET_DATA(handle, config,
 899                                 struct gpfs_config_data,
 900                                 return -1);
 901
 902         if (!config->acl) {
 903                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p,
 904                                                           mem_ctx,
 905                                                           blob_description,
 906                                                           blob);
 907         }
 908
 909         errno = 0;
 910         acl = (struct gpfs_opaque_acl *)
 911                         vfs_gpfs_getacl(mem_ctx,
 912                                         path_p,
 913                                         true,
 914                                         GPFS_ACL_TYPE_NFS4);
 915
 916         if (errno) {
 917                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
 918                                         errno, strerror(errno)));
 919
 920                 /* EINVAL means POSIX ACL, bail out on other cases */
 921                 if (errno != EINVAL) {
 922                         return -1;
 923                 }
 924         }
 925
 926         if (acl != NULL) {
 927                 /*
 928                  * file has NFSv4 ACL
 929                  *
 930                  * we only need the actual ACL blob here
 931                  * acl_version will always be NFS4 because we asked
 932                  * for NFS4
 933                  * acl_type is only used for POSIX ACLs
 934                  */
 935                 aclblob.data = (uint8_t*) acl->acl_var_data;
 936                 aclblob.length = acl->acl_buffer_len;
 937
 938                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
 939                 if (!*blob_description) {
 940                         talloc_free(acl);
 941                         errno = ENOMEM;
 942                         return -1;
 943                 }
 944
 945                 result = non_posix_sys_acl_blob_get_file_helper(handle, path_p,
 946                                                                 aclblob,
 947                                                                 mem_ctx, blob);
 948
 949                 talloc_free(acl);
 950                 return result;
 951         }
 952
 953         /* fall back to POSIX ACL */
 954         return posix_sys_acl_blob_get_file(handle, path_p, mem_ctx,
 955                                            blob_description, blob);
 956 }
 957
 958 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 959                                       files_struct *fsp,
 960                                       TALLOC_CTX *mem_ctx,
 961                                       char **blob_description,
 962                                       DATA_BLOB *blob)
 963 {
 964         struct gpfs_config_data *config;
 965         struct gpfs_opaque_acl *acl = NULL;
 966         DATA_BLOB aclblob;
 967         int result;
 968
 969         SMB_VFS_HANDLE_GET_DATA(handle, config,
 970                                 struct gpfs_config_data,
 971                                 return -1);
 972
 973         if (!config->acl) {
 974                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
 975                                                         blob_description, blob);
 976         }
 977
 978         errno = 0;
 979         acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
 980                                                 fsp->fsp_name->base_name,
 981                                                 true,
 982                                                 GPFS_ACL_TYPE_NFS4);
 983
 984         if (errno) {
 985                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
 986                                         errno, strerror(errno)));
 987
 988                 /* EINVAL means POSIX ACL, bail out on other cases */
 989                 if (errno != EINVAL) {
 990                         return -1;
 991                 }
 992         }
 993
 994         if (acl != NULL) {
 995                 /*
 996                  * file has NFSv4 ACL
 997                  *
 998                  * we only need the actual ACL blob here
 999                  * acl_version will always be NFS4 because we asked
1000                  * for NFS4
1001                  * acl_type is only used for POSIX ACLs
1002                  */
1003                 aclblob.data = (uint8_t*) acl->acl_var_data;
1004                 aclblob.length = acl->acl_buffer_len;
1005
1006                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1007                 if (!*blob_description) {
1008                         talloc_free(acl);
1009                         errno = ENOMEM;
1010                         return -1;
1011                 }
1012
1013                 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1014                                                               aclblob, mem_ctx,
1015                                                               blob);
1016
1017                 talloc_free(acl);
1018                 return result;
1019         }
1020
1021         /* fall back to POSIX ACL */
1022         return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1023                                          blob_description, blob);
1024 }
1025
1026 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1027                                      SMB_ACL_TYPE_T type)
1028 {
1029         gpfs_aclLen_t len;
1030         struct gpfs_acl *result;
1031         int i;
1032
1033         DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1034
1035         len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1036                 sizeof(gpfs_ace_v1_t);
1037
1038         result = (struct gpfs_acl *)SMB_MALLOC(len);
1039         if (result == NULL) {
1040                 errno = ENOMEM;
1041                 return result;
1042         }
1043
1044         result->acl_len = len;
1045         result->acl_level = 0;
1046         result->acl_version = GPFS_ACL_VERSION_POSIX;
1047         result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1048                 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1049         result->acl_nace = pacl->count;
1050
1051         for (i=0; i<pacl->count; i++) {
1052                 const struct smb_acl_entry *ace = &pacl->acl[i];
1053                 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1054
1055                 DEBUG(10, ("Converting type %d perm %x\n",
1056                            (int)ace->a_type, (int)ace->a_perm));
1057
1058                 g_ace->ace_perm = 0;
1059
1060                 switch(ace->a_type) {
1061                 case SMB_ACL_USER:
1062                         g_ace->ace_type = GPFS_ACL_USER;
1063                         g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1064                         break;
1065                 case SMB_ACL_USER_OBJ:
1066                         g_ace->ace_type = GPFS_ACL_USER_OBJ;
1067                         g_ace->ace_perm |= ACL_PERM_CONTROL;
1068                         g_ace->ace_who = 0;
1069                         break;
1070                 case SMB_ACL_GROUP:
1071                         g_ace->ace_type = GPFS_ACL_GROUP;
1072                         g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1073                         break;
1074                 case SMB_ACL_GROUP_OBJ:
1075                         g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1076                         g_ace->ace_who = 0;
1077                         break;
1078                 case SMB_ACL_MASK:
1079                         g_ace->ace_type = GPFS_ACL_MASK;
1080                         g_ace->ace_perm = 0x8f;
1081                         g_ace->ace_who = 0;
1082                         break;
1083                 case SMB_ACL_OTHER:
1084                         g_ace->ace_type = GPFS_ACL_OTHER;
1085                         g_ace->ace_who = 0;
1086                         break;
1087                 default:
1088                         DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1089                         errno = EINVAL;
1090                         SAFE_FREE(result);
1091                         return NULL;
1092                 }
1093
1094                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1095                         ACL_PERM_READ : 0;
1096                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1097                         ACL_PERM_WRITE : 0;
1098                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1099                         ACL_PERM_EXECUTE : 0;
1100
1101                 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1102                               g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1103         }
1104
1105         return result;
1106 }
1107
1108 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
1109                                     const char *name,
1110                                     SMB_ACL_TYPE_T type,
1111                                     SMB_ACL_T theacl)
1112 {
1113         struct gpfs_acl *gpfs_acl;
1114         int result;
1115         struct gpfs_config_data *config;
1116
1117         SMB_VFS_HANDLE_GET_DATA(handle, config,
1118                                 struct gpfs_config_data,
1119                                 return -1);
1120
1121         if (!config->acl) {
1122                 return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, type, theacl);
1123         }
1124
1125         gpfs_acl = smb2gpfs_acl(theacl, type);
1126         if (gpfs_acl == NULL) {
1127                 return -1;
1128         }
1129
1130         result = gpfswrap_putacl(discard_const_p(char, name),
1131                                  GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA, gpfs_acl);
1132
1133         SAFE_FREE(gpfs_acl);
1134         return result;
1135 }
1136
1137 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1138                                   files_struct *fsp,
1139                                   SMB_ACL_T theacl)
1140 {
1141         struct gpfs_config_data *config;
1142
1143         SMB_VFS_HANDLE_GET_DATA(handle, config,
1144                                 struct gpfs_config_data,
1145                                 return -1);
1146
1147         if (!config->acl) {
1148                 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
1149         }
1150
1151         return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
1152                                         SMB_ACL_TYPE_ACCESS, theacl);
1153 }
1154
1155 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
1156                                            const char *path)
1157 {
1158         struct gpfs_config_data *config;
1159
1160         SMB_VFS_HANDLE_GET_DATA(handle, config,
1161                                 struct gpfs_config_data,
1162                                 return -1);
1163
1164         if (!config->acl) {
1165                 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, path);
1166         }
1167
1168         errno = ENOTSUP;
1169         return -1;
1170 }
1171
1172 /*
1173  * Assumed: mode bits are shiftable and standard
1174  * Output: the new aceMask field for an smb nfs4 ace
1175  */
1176 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
1177 {
1178         const uint32 posix_nfs4map[3] = {
1179                 SMB_ACE4_EXECUTE, /* execute */
1180                 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1181                 SMB_ACE4_READ_DATA /* read */
1182         };
1183         int     i;
1184         uint32_t        posix_mask = 0x01;
1185         uint32_t        posix_bit;
1186         uint32_t        nfs4_bits;
1187
1188         for(i=0; i<3; i++) {
1189                 nfs4_bits = posix_nfs4map[i];
1190                 posix_bit = rwx & posix_mask;
1191
1192                 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1193                         if (posix_bit)
1194                                 aceMask |= nfs4_bits;
1195                         else
1196                                 aceMask &= ~nfs4_bits;
1197                 } else {
1198                         /* add deny bits when suitable */
1199                         if (!posix_bit)
1200                                 aceMask |= nfs4_bits;
1201                         else
1202                                 aceMask &= ~nfs4_bits;
1203                 } /* other ace types are unexpected */
1204
1205                 posix_mask <<= 1;
1206         }
1207
1208         return aceMask;
1209 }
1210
1211 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1212                              const char *path, mode_t mode)
1213 {
1214         SMB4ACL_T *pacl = NULL;
1215         int     result;
1216         bool    haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1217         int     i;
1218         files_struct    fake_fsp; /* TODO: rationalize parametrization */
1219         SMB4ACE_T       *smbace;
1220         TALLOC_CTX *frame = talloc_stackframe();
1221
1222         DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1223
1224         result = gpfs_get_nfs4_acl(frame, path, &pacl);
1225         if (result) {
1226                 TALLOC_FREE(frame);
1227                 return result;
1228         }
1229
1230         if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1231                 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1232         }
1233
1234         for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1235                 SMB_ACE4PROP_T  *ace = smb_get_ace4(smbace);
1236                 uint32_t        specid = ace->who.special_id;
1237
1238                 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1239                     ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1240                     specid <= SMB_ACE4_WHO_EVERYONE) {
1241
1242                         uint32_t newMask;
1243
1244                         if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1245                                 haveAllowEntry[specid] = True;
1246
1247                         /* mode >> 6 for @owner, mode >> 3 for @group,
1248                          * mode >> 0 for @everyone */
1249                         newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1250                                                       mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1251                         if (ace->aceMask!=newMask) {
1252                                 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1253                                            path, ace->aceMask, newMask, specid));
1254                         }
1255                         ace->aceMask = newMask;
1256                 }
1257         }
1258
1259         /* make sure we have at least ALLOW entries
1260          * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1261          * - if necessary
1262          */
1263         for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1264                 SMB_ACE4PROP_T  ace;
1265
1266                 if (haveAllowEntry[i]==True)
1267                         continue;
1268
1269                 ZERO_STRUCT(ace);
1270                 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1271                 ace.flags |= SMB_ACE4_ID_SPECIAL;
1272                 ace.who.special_id = i;
1273
1274                 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1275                         ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1276
1277                 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1278                                                   mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1279
1280                 /* don't add unnecessary aces */
1281                 if (!ace.aceMask)
1282                         continue;
1283
1284                 /* we add it to the END - as windows expects allow aces */
1285                 smb_add_ace4(pacl, &ace);
1286                 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1287                            path, mode, i, ace.aceMask));
1288         }
1289
1290         /* don't add complementary DENY ACEs here */
1291         ZERO_STRUCT(fake_fsp);
1292         fake_fsp.fsp_name = synthetic_smb_fname(
1293                 frame, path, NULL, NULL);
1294         if (fake_fsp.fsp_name == NULL) {
1295                 errno = ENOMEM;
1296                 TALLOC_FREE(frame);
1297                 return -1;
1298         }
1299         /* put the acl */
1300         if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1301                 TALLOC_FREE(frame);
1302                 return -1;
1303         }
1304
1305         TALLOC_FREE(frame);
1306         return 0; /* ok for [f]chmod */
1307 }
1308
1309 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1310 {
1311         struct smb_filename *smb_fname_cpath;
1312         int rc;
1313
1314         smb_fname_cpath = synthetic_smb_fname(talloc_tos(), path, NULL, NULL);
1315         if (smb_fname_cpath == NULL) {
1316                 errno = ENOMEM;
1317                 return -1;
1318         }
1319
1320         if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
1321                 return -1;
1322         }
1323
1324         /* avoid chmod() if possible, to preserve acls */
1325         if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
1326                 return 0;
1327         }
1328
1329         rc = gpfsacl_emu_chmod(handle, path, mode);
1330         if (rc == 1)
1331                 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
1332         return rc;
1333 }
1334
1335 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1336 {
1337                  SMB_STRUCT_STAT st;
1338                  int rc;
1339
1340                  if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1341                          return -1;
1342                  }
1343
1344                  /* avoid chmod() if possible, to preserve acls */
1345                  if ((st.st_ex_mode & ~S_IFMT) == mode) {
1346                          return 0;
1347                  }
1348
1349                  rc = gpfsacl_emu_chmod(handle, fsp->fsp_name->base_name,
1350                                         mode);
1351                  if (rc == 1)
1352                          return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1353                  return rc;
1354 }
1355
1356 static int gpfs_set_xattr(struct vfs_handle_struct *handle,  const char *path,
1357                            const char *name, const void *value, size_t size,  int flags){
1358         struct xattr_DOSATTRIB dosattrib;
1359         enum ndr_err_code ndr_err;
1360         DATA_BLOB blob;
1361         unsigned int dosmode=0;
1362         struct gpfs_winattr attrs;
1363         int ret = 0;
1364         struct gpfs_config_data *config;
1365
1366         SMB_VFS_HANDLE_GET_DATA(handle, config,
1367                                 struct gpfs_config_data,
1368                                 return -1);
1369
1370         if (!config->winattr) {
1371                 DEBUG(10, ("gpfs_set_xattr:name is %s -> next\n",name));
1372                 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
1373         }
1374
1375         DEBUG(10, ("gpfs_set_xattr: %s \n",path));
1376
1377         /* Only handle DOS Attributes */
1378         if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
1379                 DEBUG(5, ("gpfs_set_xattr:name is %s\n",name));
1380                 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
1381         }
1382
1383         blob.data = discard_const_p(uint8_t, value);
1384         blob.length = size;
1385
1386         ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &dosattrib,
1387                         (ndr_pull_flags_fn_t)ndr_pull_xattr_DOSATTRIB);
1388
1389         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1390                 DEBUG(1, ("gpfs_set_xattr: bad ndr decode "
1391                           "from EA on file %s: Error = %s\n",
1392                           path, ndr_errstr(ndr_err)));
1393                 return false;
1394         }
1395
1396         if (dosattrib.version != 3) {
1397                 DEBUG(1, ("gpfs_set_xattr: expected dosattrib version 3, got "
1398                           "%d\n", (int)dosattrib.version));
1399                 return false;
1400         }
1401         if (!(dosattrib.info.info3.valid_flags & XATTR_DOSINFO_ATTRIB)) {
1402                 DEBUG(10, ("gpfs_set_xattr: XATTR_DOSINFO_ATTRIB not "
1403                            "valid, ignoring\n"));
1404                 return true;
1405         }
1406
1407         dosmode = dosattrib.info.info3.attrib;
1408
1409         attrs.winAttrs = 0;
1410         /*Just map RD_ONLY, ARCHIVE, SYSTEM HIDDEN and SPARSE. Ignore the others*/
1411         if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1412                 attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
1413         }
1414         if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1415                         attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
1416                 }
1417         if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1418                         attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
1419                 }
1420         if (dosmode & FILE_ATTRIBUTE_READONLY){
1421                         attrs.winAttrs |= GPFS_WINATTR_READONLY;
1422         }
1423         if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1424                 attrs.winAttrs |= GPFS_WINATTR_SPARSE_FILE;
1425         }
1426
1427
1428         ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1429                                          GPFS_WINATTR_SET_ATTRS, &attrs);
1430         if ( ret == -1){
1431                 if (errno == ENOSYS) {
1432                         return SMB_VFS_NEXT_SETXATTR(handle, path, name, value,
1433                                                      size, flags);
1434                 }
1435
1436                 DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
1437                 return -1;
1438         }
1439
1440         DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
1441         return 0;
1442 }
1443
1444 static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle,  const char *path,
1445                               const char *name, void *value, size_t size){
1446         char *attrstr = value;
1447         unsigned int dosmode = 0;
1448         struct gpfs_winattr attrs;
1449         int ret = 0;
1450         struct gpfs_config_data *config;
1451
1452         SMB_VFS_HANDLE_GET_DATA(handle, config,
1453                                 struct gpfs_config_data,
1454                                 return -1);
1455
1456         if (!config->winattr) {
1457                 DEBUG(10, ("gpfs_get_xattr:name is %s -> next\n",name));
1458                 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
1459         }
1460
1461         DEBUG(10, ("gpfs_get_xattr: %s \n",path));
1462
1463         /* Only handle DOS Attributes */
1464         if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
1465                 DEBUG(5, ("gpfs_get_xattr:name is %s\n",name));
1466                 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
1467         }
1468
1469         ret = gpfswrap_get_winattrs_path(discard_const_p(char, path), &attrs);
1470         if ( ret == -1){
1471                 int dbg_lvl;
1472
1473                 if (errno == ENOSYS) {
1474                         return SMB_VFS_NEXT_GETXATTR(handle, path, name, value,
1475                                                      size);
1476                 }
1477
1478                 if (errno != EPERM && errno != EACCES) {
1479                         dbg_lvl = 1;
1480                 } else {
1481                         dbg_lvl = 5;
1482                 }
1483                 DEBUG(dbg_lvl, ("gpfs_get_xattr: Get GPFS attributes failed: "
1484                               "%d (%s)\n", ret, strerror(errno)));
1485                 return -1;
1486         }
1487
1488         DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
1489
1490         /*Just map RD_ONLY, ARCHIVE, SYSTEM, HIDDEN and SPARSE. Ignore the others*/
1491         if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
1492                 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1493         }
1494         if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
1495                 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1496         }
1497         if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
1498                 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1499         }
1500         if (attrs.winAttrs & GPFS_WINATTR_READONLY){
1501                 dosmode |= FILE_ATTRIBUTE_READONLY;
1502         }
1503         if (attrs.winAttrs & GPFS_WINATTR_SPARSE_FILE) {
1504                 dosmode |= FILE_ATTRIBUTE_SPARSE;
1505         }
1506
1507         snprintf(attrstr, size, "0x%2.2x",
1508                  (unsigned int)(dosmode & SAMBA_ATTRIBUTES_MASK));
1509         DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
1510         return 4;
1511 }
1512
1513 #if defined(HAVE_FSTATAT)
1514 static int stat_with_capability(struct vfs_handle_struct *handle,
1515                                 struct smb_filename *smb_fname, int flag)
1516 {
1517         int fd = -1;
1518         bool b;
1519         char *dir_name;
1520         const char *rel_name = NULL;
1521         struct stat st;
1522         int ret = -1;
1523
1524         b = parent_dirname(talloc_tos(), smb_fname->base_name,
1525                            &dir_name, &rel_name);
1526         if (!b) {
1527                 errno = ENOMEM;
1528                 return -1;
1529         }
1530
1531         fd = open(dir_name, O_RDONLY, 0);
1532         TALLOC_FREE(dir_name);
1533         if (fd == -1) {
1534                 return -1;
1535         }
1536
1537         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1538         ret = fstatat(fd, rel_name, &st, flag);
1539         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1540
1541         close(fd);
1542
1543         if (ret == 0) {
1544                 init_stat_ex_from_stat(
1545                         &smb_fname->st, &st,
1546                         lp_fake_directory_create_times(SNUM(handle->conn)));
1547         }
1548
1549         return ret;
1550 }
1551 #endif
1552
1553 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1554                          struct smb_filename *smb_fname)
1555 {
1556         struct gpfs_winattr attrs;
1557         char *fname = NULL;
1558         NTSTATUS status;
1559         int ret;
1560         struct gpfs_config_data *config;
1561
1562         SMB_VFS_HANDLE_GET_DATA(handle, config,
1563                                 struct gpfs_config_data,
1564                                 return -1);
1565
1566         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1567 #if defined(HAVE_FSTATAT)
1568         if (ret == -1 && errno == EACCES) {
1569                 DEBUG(10, ("Trying stat with capability for %s\n",
1570                            smb_fname->base_name));
1571                 ret = stat_with_capability(handle, smb_fname, 0);
1572         }
1573 #endif
1574         if (ret == -1) {
1575                 return -1;
1576         }
1577
1578         if (!config->winattr) {
1579                 return 0;
1580         }
1581
1582         status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
1583         if (!NT_STATUS_IS_OK(status)) {
1584                 errno = map_errno_from_nt_status(status);
1585                 return -1;
1586         }
1587         ret = gpfswrap_get_winattrs_path(discard_const_p(char, fname), &attrs);
1588         TALLOC_FREE(fname);
1589         if (ret == 0) {
1590                 smb_fname->st.st_ex_calculated_birthtime = false;
1591                 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1592                 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1593         }
1594         return 0;
1595 }
1596
1597 static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
1598                           struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1599 {
1600         struct gpfs_winattr attrs;
1601         int ret;
1602         struct gpfs_config_data *config;
1603
1604         SMB_VFS_HANDLE_GET_DATA(handle, config,
1605                                 struct gpfs_config_data,
1606                                 return -1);
1607
1608         ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1609         if (ret == -1) {
1610                 return -1;
1611         }
1612         if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
1613                 return 0;
1614         }
1615         if (!config->winattr) {
1616                 return 0;
1617         }
1618
1619         ret = gpfswrap_get_winattrs(fsp->fh->fd, &attrs);
1620         if (ret == 0) {
1621                 sbuf->st_ex_calculated_birthtime = false;
1622                 sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1623                 sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1624         }
1625         return 0;
1626 }
1627
1628 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1629                           struct smb_filename *smb_fname)
1630 {
1631         struct gpfs_winattr attrs;
1632         char *path = NULL;
1633         NTSTATUS status;
1634         int ret;
1635         struct gpfs_config_data *config;
1636
1637         SMB_VFS_HANDLE_GET_DATA(handle, config,
1638                                 struct gpfs_config_data,
1639                                 return -1);
1640
1641         ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1642 #if defined(HAVE_FSTATAT)
1643         if (ret == -1 && errno == EACCES) {
1644                 DEBUG(10, ("Trying lstat with capability for %s\n",
1645                            smb_fname->base_name));
1646                 ret = stat_with_capability(handle, smb_fname,
1647                                            AT_SYMLINK_NOFOLLOW);
1648         }
1649 #endif
1650
1651         if (ret == -1) {
1652                 return -1;
1653         }
1654         if (!config->winattr) {
1655                 return 0;
1656         }
1657
1658         status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1659         if (!NT_STATUS_IS_OK(status)) {
1660                 errno = map_errno_from_nt_status(status);
1661                 return -1;
1662         }
1663         ret = gpfswrap_get_winattrs_path(discard_const_p(char, path), &attrs);
1664         TALLOC_FREE(path);
1665         if (ret == 0) {
1666                 smb_fname->st.st_ex_calculated_birthtime = false;
1667                 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1668                 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1669         }
1670         return 0;
1671 }
1672
1673 static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
1674                         const struct smb_filename *smb_fname,
1675                         struct smb_file_time *ft)
1676 {
1677
1678         struct gpfs_winattr attrs;
1679         int ret;
1680         char *path = NULL;
1681         NTSTATUS status;
1682         struct gpfs_config_data *config;
1683
1684         SMB_VFS_HANDLE_GET_DATA(handle, config,
1685                                 struct gpfs_config_data,
1686                                 return -1);
1687
1688         status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1689         if (!NT_STATUS_IS_OK(status)) {
1690                 errno = map_errno_from_nt_status(status);
1691                 return -1;
1692         }
1693
1694         /* Try to use gpfs_set_times if it is enabled and available */
1695         if (config->settimes) {
1696                 ret = smbd_gpfs_set_times_path(path, ft);
1697
1698                 if (ret == 0 || (ret == -1 && errno != ENOSYS)) {
1699                         return ret;
1700                 }
1701         }
1702
1703         DEBUG(10,("gpfs_set_times() not available or disabled, "
1704                   "use ntimes and winattr\n"));
1705
1706         ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1707         if(ret == -1){
1708                 /* don't complain if access was denied */
1709                 if (errno != EPERM && errno != EACCES) {
1710                         DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed:"
1711                                  "%s", strerror(errno)));
1712                 }
1713                 return -1;
1714         }
1715
1716         if(null_timespec(ft->create_time)){
1717                 DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
1718                 return 0;
1719         }
1720
1721         if (!config->winattr) {
1722                 return 0;
1723         }
1724
1725         attrs.winAttrs = 0;
1726         attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1727         attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1728
1729         ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1730                                          GPFS_WINATTR_SET_CREATION_TIME,
1731                                          &attrs);
1732         if(ret == -1 && errno != ENOSYS){
1733                 DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
1734                 return -1;
1735         }
1736         return 0;
1737
1738 }
1739
1740 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1741                        struct files_struct *fsp, enum vfs_fallocate_mode mode,
1742                        off_t offset, off_t len)
1743 {
1744         int ret;
1745         struct gpfs_config_data *config;
1746
1747         SMB_VFS_HANDLE_GET_DATA(handle, config,
1748                                 struct gpfs_config_data,
1749                                 return -1);
1750
1751         if (!config->prealloc) {
1752                 /* you should better not run fallocate() on GPFS at all */
1753                 errno = ENOTSUP;
1754                 return -1;
1755         }
1756
1757         if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1758                 DEBUG(10, ("Unsupported VFS_FALLOCATE_KEEP_SIZE\n"));
1759                 errno = ENOTSUP;
1760                 return -1;
1761         }
1762
1763         ret = gpfswrap_prealloc(fsp->fh->fd, offset, len);
1764
1765         if (ret == -1 && errno != ENOSYS) {
1766                 DEBUG(0, ("GPFS prealloc failed: %s\n", strerror(errno)));
1767         } else if (ret == -1 && errno == ENOSYS) {
1768                 DEBUG(10, ("GPFS prealloc not supported.\n"));
1769         } else {
1770                 DEBUG(10, ("GPFS prealloc succeeded.\n"));
1771         }
1772
1773         return ret;
1774 }
1775
1776 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1777                                 off_t len)
1778 {
1779         int result;
1780         struct gpfs_config_data *config;
1781
1782         SMB_VFS_HANDLE_GET_DATA(handle, config,
1783                                 struct gpfs_config_data,
1784                                 return -1);
1785
1786         if (!config->ftruncate) {
1787                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1788         }
1789
1790         result = gpfswrap_ftruncate(fsp->fh->fd, len);
1791         if ((result == -1) && (errno == ENOSYS)) {
1792                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1793         }
1794         return result;
1795 }
1796
1797 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1798                                 const struct smb_filename *fname,
1799                                 SMB_STRUCT_STAT *sbuf)
1800 {
1801         struct gpfs_winattr attrs;
1802         char *path = NULL;
1803         NTSTATUS status;
1804         struct gpfs_config_data *config;
1805         int ret;
1806
1807         SMB_VFS_HANDLE_GET_DATA(handle, config,
1808                                 struct gpfs_config_data,
1809                                 return -1);
1810
1811         if (!config->winattr) {
1812                 return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
1813         }
1814
1815         status = get_full_smb_filename(talloc_tos(), fname, &path);
1816         if (!NT_STATUS_IS_OK(status)) {
1817                 errno = map_errno_from_nt_status(status);
1818                 return -1;
1819         }
1820
1821         ret = gpfswrap_get_winattrs_path(path, &attrs);
1822         if (ret == -1) {
1823                 TALLOC_FREE(path);
1824                 return false;
1825         }
1826
1827         if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1828                 DEBUG(10, ("%s is offline\n", path));
1829                 TALLOC_FREE(path);
1830                 return true;
1831         }
1832         DEBUG(10, ("%s is online\n", path));
1833         TALLOC_FREE(path);
1834         return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
1835 }
1836
1837 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1838                                struct files_struct *fsp)
1839 {
1840         return vfs_gpfs_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st);
1841 }
1842
1843 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1844                                  files_struct *fsp, const DATA_BLOB *hdr,
1845                                  off_t offset, size_t n)
1846 {
1847         if (SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name, &fsp->fsp_name->st))
1848         {
1849                 errno = ENOSYS;
1850                 return -1;
1851         }
1852         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
1853 }
1854
1855 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
1856                             const char *service, const char *user)
1857 {
1858         struct gpfs_config_data *config;
1859         int ret;
1860
1861         gpfswrap_lib_init(0);
1862
1863         config = talloc_zero(handle->conn, struct gpfs_config_data);
1864         if (!config) {
1865                 DEBUG(0, ("talloc_zero() failed\n"));
1866                 errno = ENOMEM;
1867                 return -1;
1868         }
1869
1870         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
1871         if (ret < 0) {
1872                 TALLOC_FREE(config);
1873                 return ret;
1874         }
1875
1876         config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1877                                         "sharemodes", true);
1878
1879         config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
1880                                         "leases", true);
1881
1882         config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
1883                                    "hsm", false);
1884
1885         config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
1886                                       "syncio", false);
1887
1888         config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
1889                                        "winattr", false);
1890
1891         config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
1892                                          "ftruncate", true);
1893
1894         config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
1895                                                "getrealfilename", true);
1896
1897         config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
1898                                           "dfreequota", false);
1899
1900         config->prealloc = lp_parm_bool(SNUM(handle->conn), "gpfs",
1901                                    "prealloc", true);
1902
1903         config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
1904
1905         config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1906                                         "settimes", true);
1907         config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
1908                                        "recalls", true);
1909
1910         SMB_VFS_HANDLE_SET_DATA(handle, config,
1911                                 NULL, struct gpfs_config_data,
1912                                 return -1);
1913
1914         if (config->leases) {
1915                 /*
1916                  * GPFS lease code is based on kernel oplock code
1917                  * so make sure it is turned on
1918                  */
1919                 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
1920                         DEBUG(5, ("Enabling kernel oplocks for "
1921                                   "gpfs:leases to work\n"));
1922                         lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
1923                                         "true");
1924                 }
1925
1926                 /*
1927                  * as the kernel does not properly support Level II oplocks
1928                  * and GPFS leases code is based on kernel infrastructure, we
1929                  * need to turn off Level II oplocks if gpfs:leases is enabled
1930                  */
1931                 if (lp_level2_oplocks(SNUM(handle->conn))) {
1932                         DEBUG(5, ("gpfs:leases are enabled, disabling "
1933                                   "Level II oplocks\n"));
1934                         lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
1935                                         "false");
1936                 }
1937         }
1938
1939         return 0;
1940 }
1941
1942 static int vfs_gpfs_get_quotas(const char *path, uid_t uid, gid_t gid,
1943                                int *fset_id,
1944                                struct gpfs_quotaInfo *qi_user,
1945                                struct gpfs_quotaInfo *qi_group,
1946                                struct gpfs_quotaInfo *qi_fset)
1947 {
1948         int err;
1949         char *dir_path;
1950         bool b;
1951
1952         /*
1953          * We want to always use the directory to get the fileset id,
1954          * because files might have a share mode. We also do not want
1955          * to get the parent directory when there is already a
1956          * directory to avoid stepping in a different fileset.  The
1957          * path passed here is currently either "." or a filename, so
1958          * this is ok. The proper solution would be having a way to
1959          * query the fileset id without opening the file.
1960          */
1961         b = parent_dirname(talloc_tos(), path, &dir_path, NULL);
1962         if (!b) {
1963                 errno = ENOMEM;
1964                 return -1;
1965         }
1966
1967         DEBUG(10, ("path %s, directory %s\n", path, dir_path));
1968
1969         err = get_gpfs_fset_id(dir_path, fset_id);
1970         if (err) {
1971                 DEBUG(0, ("Get fset id failed path %s, dir %s, errno %d.\n",
1972                           path, dir_path, errno));
1973                 return err;
1974         }
1975
1976         err = get_gpfs_quota(path, GPFS_USRQUOTA, uid, qi_user);
1977         if (err) {
1978                 return err;
1979         }
1980
1981         err = get_gpfs_quota(path, GPFS_GRPQUOTA, gid, qi_group);
1982         if (err) {
1983                 return err;
1984         }
1985
1986         err = get_gpfs_quota(path, GPFS_FILESETQUOTA, *fset_id, qi_fset);
1987         if (err) {
1988                 return err;
1989         }
1990
1991         return 0;
1992 }
1993
1994 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
1995                                      uint64_t *dfree, uint64_t *dsize)
1996 {
1997         uint64_t usage, limit;
1998
1999         /*
2000          * The quota reporting is done in units of 1024 byte blocks, but
2001          * sys_fsusage uses units of 512 byte blocks, adjust the block number
2002          * accordingly. Also filter possibly negative usage counts from gpfs.
2003          */
2004         usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2005         limit = (uint64_t)qi.blockHardLimit * 2;
2006
2007         /*
2008          * When the grace time for the exceeded soft block quota has been
2009          * exceeded, the soft block quota becomes an additional hard limit.
2010          */
2011         if (qi.blockSoftLimit &&
2012             qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2013                 /* report disk as full */
2014                 *dfree = 0;
2015                 *dsize = MIN(*dsize, usage);
2016         }
2017
2018         if (!qi.blockHardLimit)
2019                 return;
2020
2021         if (usage >= limit) {
2022                 /* report disk as full */
2023                 *dfree = 0;
2024                 *dsize = MIN(*dsize, usage);
2025
2026         } else {
2027                 /* limit has not been reached, determine "free space" */
2028                 *dfree = MIN(*dfree, limit - usage);
2029                 *dsize = MIN(*dsize, limit);
2030         }
2031 }
2032
2033 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle, const char *path,
2034                                    uint64_t *bsize,
2035                                    uint64_t *dfree, uint64_t *dsize)
2036 {
2037         struct security_unix_token *utok;
2038         struct gpfs_quotaInfo qi_user, qi_group, qi_fset;
2039         struct gpfs_config_data *config;
2040         int err, fset_id;
2041         time_t cur_time;
2042
2043         SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2044                                 return (uint64_t)-1);
2045         if (!config->dfreequota) {
2046                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2047                                               bsize, dfree, dsize);
2048         }
2049
2050         err = sys_fsusage(path, dfree, dsize);
2051         if (err) {
2052                 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2053                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2054                                               bsize, dfree, dsize);
2055         }
2056
2057         /* sys_fsusage returns units of 512 bytes */
2058         *bsize = 512;
2059
2060         DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2061                    (unsigned long long)*dfree, (unsigned long long)*dsize));
2062
2063         utok = handle->conn->session_info->unix_token;
2064         err = vfs_gpfs_get_quotas(path, utok->uid, utok->gid, &fset_id,
2065                                   &qi_user, &qi_group, &qi_fset);
2066         if (err) {
2067                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2068                                               bsize, dfree, dsize);
2069         }
2070
2071         cur_time = time(NULL);
2072
2073         /* Adjust free space and size according to quota limits. */
2074         vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2075         vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2076
2077         /* Id 0 indicates the default quota, not an actual quota */
2078         if (fset_id != 0) {
2079                 vfs_gpfs_disk_free_quota(qi_fset, cur_time, dfree, dsize);
2080         }
2081
2082         disk_norm(bsize, dfree, dsize);
2083         return *dfree;
2084 }
2085
2086 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2087                                       enum timestamp_set_resolution *p_ts_res)
2088 {
2089         struct gpfs_config_data *config;
2090         uint32_t next;
2091
2092         next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2093
2094         SMB_VFS_HANDLE_GET_DATA(handle, config,
2095                                 struct gpfs_config_data,
2096                                 return next);
2097
2098         if (config->hsm) {
2099                 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2100         }
2101         return next;
2102 }
2103
2104 static int vfs_gpfs_open(struct vfs_handle_struct *handle,
2105                          struct smb_filename *smb_fname, files_struct *fsp,
2106                          int flags, mode_t mode)
2107 {
2108         struct gpfs_config_data *config;
2109
2110         SMB_VFS_HANDLE_GET_DATA(handle, config,
2111                                 struct gpfs_config_data,
2112                                 return -1);
2113
2114         if (config->hsm && !config->recalls) {
2115                 if (SMB_VFS_IS_OFFLINE(handle->conn, smb_fname, &smb_fname->st))
2116                 {
2117                         DEBUG(10, ("Refusing access to offline file %s\n",
2118                                   fsp_str_dbg(fsp)));
2119                         errno = EACCES;
2120                         return -1;
2121                 }
2122         }
2123
2124         if (config->syncio) {
2125                 flags |= O_SYNC;
2126         }
2127         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
2128 }
2129
2130 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2131                               void *data, size_t n, off_t offset)
2132 {
2133         ssize_t ret;
2134         bool was_offline;
2135
2136         was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2137                                          &fsp->fsp_name->st);
2138
2139         ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2140
2141         if ((ret != -1) && was_offline) {
2142                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2143                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2144                              fsp->fsp_name->base_name);
2145         }
2146
2147         return ret;
2148 }
2149
2150 struct vfs_gpfs_pread_state {
2151         struct files_struct *fsp;
2152         ssize_t ret;
2153         int err;
2154         bool was_offline;
2155 };
2156
2157 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2158
2159 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2160                                               TALLOC_CTX *mem_ctx,
2161                                               struct tevent_context *ev,
2162                                               struct files_struct *fsp,
2163                                               void *data, size_t n,
2164                                               off_t offset)
2165 {
2166         struct tevent_req *req, *subreq;
2167         struct vfs_gpfs_pread_state *state;
2168
2169         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2170         if (req == NULL) {
2171                 return NULL;
2172         }
2173         state->was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2174                                                 &fsp->fsp_name->st);
2175         state->fsp = fsp;
2176         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2177                                          n, offset);
2178         if (tevent_req_nomem(subreq, req)) {
2179                 return tevent_req_post(req, ev);
2180         }
2181         tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2182         return req;
2183 }
2184
2185 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2186 {
2187         struct tevent_req *req = tevent_req_callback_data(
2188                 subreq, struct tevent_req);
2189         struct vfs_gpfs_pread_state *state = tevent_req_data(
2190                 req, struct vfs_gpfs_pread_state);
2191
2192         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->err);
2193         TALLOC_FREE(subreq);
2194         tevent_req_done(req);
2195 }
2196
2197 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req, int *err)
2198 {
2199         struct vfs_gpfs_pread_state *state = tevent_req_data(
2200                 req, struct vfs_gpfs_pread_state);
2201         struct files_struct *fsp = state->fsp;
2202
2203         if (tevent_req_is_unix_error(req, err)) {
2204                 return -1;
2205         }
2206         *err = state->err;
2207
2208         if ((state->ret != -1) && state->was_offline) {
2209                 DEBUG(10, ("sending notify\n"));
2210                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2211                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2212                              fsp->fsp_name->base_name);
2213         }
2214
2215         return state->ret;
2216 }
2217
2218 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2219                                const void *data, size_t n, off_t offset)
2220 {
2221         ssize_t ret;
2222         bool was_offline;
2223
2224         was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2225                                          &fsp->fsp_name->st);
2226
2227         ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2228
2229         if ((ret != -1) && was_offline) {
2230                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2231                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2232                              fsp->fsp_name->base_name);
2233         }
2234
2235         return ret;
2236 }
2237
2238 struct vfs_gpfs_pwrite_state {
2239         struct files_struct *fsp;
2240         ssize_t ret;
2241         int err;
2242         bool was_offline;
2243 };
2244
2245 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2246
2247 static struct tevent_req *vfs_gpfs_pwrite_send(
2248         struct vfs_handle_struct *handle,
2249         TALLOC_CTX *mem_ctx,
2250         struct tevent_context *ev,
2251         struct files_struct *fsp,
2252         const void *data, size_t n,
2253         off_t offset)
2254 {
2255         struct tevent_req *req, *subreq;
2256         struct vfs_gpfs_pwrite_state *state;
2257
2258         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2259         if (req == NULL) {
2260                 return NULL;
2261         }
2262         state->was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2263                                                 &fsp->fsp_name->st);
2264         state->fsp = fsp;
2265         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2266                                          n, offset);
2267         if (tevent_req_nomem(subreq, req)) {
2268                 return tevent_req_post(req, ev);
2269         }
2270         tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2271         return req;
2272 }
2273
2274 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2275 {
2276         struct tevent_req *req = tevent_req_callback_data(
2277                 subreq, struct tevent_req);
2278         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2279                 req, struct vfs_gpfs_pwrite_state);
2280
2281         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err);
2282         TALLOC_FREE(subreq);
2283         tevent_req_done(req);
2284 }
2285
2286 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req, int *err)
2287 {
2288         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2289                 req, struct vfs_gpfs_pwrite_state);
2290         struct files_struct *fsp = state->fsp;
2291
2292         if (tevent_req_is_unix_error(req, err)) {
2293                 return -1;
2294         }
2295         *err = state->err;
2296
2297         if ((state->ret != -1) && state->was_offline) {
2298                 DEBUG(10, ("sending notify\n"));
2299                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2300                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2301                              fsp->fsp_name->base_name);
2302         }
2303
2304         return state->ret;
2305 }
2306
2307
2308 static struct vfs_fn_pointers vfs_gpfs_fns = {
2309         .connect_fn = vfs_gpfs_connect,
2310         .disk_free_fn = vfs_gpfs_disk_free,
2311         .fs_capabilities_fn = vfs_gpfs_capabilities,
2312         .kernel_flock_fn = vfs_gpfs_kernel_flock,
2313         .linux_setlease_fn = vfs_gpfs_setlease,
2314         .get_real_filename_fn = vfs_gpfs_get_real_filename,
2315         .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2316         .get_nt_acl_fn = gpfsacl_get_nt_acl,
2317         .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2318         .sys_acl_get_file_fn = gpfsacl_sys_acl_get_file,
2319         .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2320         .sys_acl_blob_get_file_fn = gpfsacl_sys_acl_blob_get_file,
2321         .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2322         .sys_acl_set_file_fn = gpfsacl_sys_acl_set_file,
2323         .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2324         .sys_acl_delete_def_file_fn = gpfsacl_sys_acl_delete_def_file,
2325         .chmod_fn = vfs_gpfs_chmod,
2326         .fchmod_fn = vfs_gpfs_fchmod,
2327         .close_fn = vfs_gpfs_close,
2328         .setxattr_fn = gpfs_set_xattr,
2329         .getxattr_fn = gpfs_get_xattr,
2330         .stat_fn = vfs_gpfs_stat,
2331         .fstat_fn = vfs_gpfs_fstat,
2332         .lstat_fn = vfs_gpfs_lstat,
2333         .ntimes_fn = vfs_gpfs_ntimes,
2334         .is_offline_fn = vfs_gpfs_is_offline,
2335         .aio_force_fn = vfs_gpfs_aio_force,
2336         .sendfile_fn = vfs_gpfs_sendfile,
2337         .fallocate_fn = vfs_gpfs_fallocate,
2338         .open_fn = vfs_gpfs_open,
2339         .pread_fn = vfs_gpfs_pread,
2340         .pread_send_fn = vfs_gpfs_pread_send,
2341         .pread_recv_fn = vfs_gpfs_pread_recv,
2342         .pwrite_fn = vfs_gpfs_pwrite,
2343         .pwrite_send_fn = vfs_gpfs_pwrite_send,
2344         .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2345         .ftruncate_fn = vfs_gpfs_ftruncate
2346 };
2347
2348 NTSTATUS vfs_gpfs_init(void);
2349 NTSTATUS vfs_gpfs_init(void)
2350 {
2351         int ret;
2352
2353         ret = gpfswrap_init();
2354         if (ret != 0) {
2355                 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2356         }
2357
2358         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2359                                 &vfs_gpfs_fns);
2360 }