source3/modules/vfs_gpfs.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Samba VFS module for GPFS filesystem
   4  *  Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
   5  *  Copyright (C) Christof Schmitt 2015
   6  *  Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
   7  *                           and Gomati Mohanan <gomati.mohanan@in.ibm.com>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 3 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include "includes.h"
  24 #include "smbd/smbd.h"
  25 #include "librpc/gen_ndr/ndr_xattr.h"
  26 #include "include/smbprofile.h"
  27 #include "modules/non_posix_acls.h"
  28 #include "libcli/security/security.h"
  29 #include "nfs4_acls.h"
  30 #include "vfs_gpfs.h"
  31 #include "system/filesys.h"
  32 #include "auth.h"
  33 #include "lib/util/tevent_unix.h"
  34
  35 #undef DBGC_CLASS
  36 #define DBGC_CLASS DBGC_VFS
  37
  38 #ifndef GPFS_GETACL_NATIVE
  39 #define GPFS_GETACL_NATIVE 0x00000004
  40 #endif
  41
  42 struct gpfs_config_data {
  43         bool sharemodes;
  44         bool leases;
  45         bool hsm;
  46         bool syncio;
  47         bool winattr;
  48         bool ftruncate;
  49         bool getrealfilename;
  50         bool dfreequota;
  51         bool prealloc;
  52         bool acl;
  53         bool settimes;
  54         bool recalls;
  55 };
  56
  57 static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
  58 {
  59         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
  60                 /* gacl->v4Level1.acl_flags requires gpfs 3.5 */
  61                 return *(unsigned int *)&gacl->ace_v4;
  62         }
  63         return 0;
  64 }
  65
  66 static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
  67 {
  68         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
  69                 /* &gacl->v4Level1.ace_v4[i] requires gpfs 3.5 */
  70                 char *ptr = (char *)&gacl->ace_v4[i] + sizeof(unsigned int);
  71                 return (gpfs_ace_v4_t *)ptr;
  72         }
  73         return &gacl->ace_v4[i];
  74 }
  75
  76 static bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
  77                                uint32 share_access)
  78 {
  79         unsigned int allow = GPFS_SHARE_NONE;
  80         unsigned int deny = GPFS_DENY_NONE;
  81         int result;
  82
  83         if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
  84                 /* No real file, don't disturb */
  85                 return True;
  86         }
  87
  88         allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
  89                                  DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
  90         allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
  91                 GPFS_SHARE_READ : 0;
  92
  93         if (allow == GPFS_SHARE_NONE) {
  94                 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
  95         }
  96         else {
  97                 deny |= (share_access & FILE_SHARE_WRITE) ?
  98                         0 : GPFS_DENY_WRITE;
  99                 deny |= (share_access & (FILE_SHARE_READ)) ?
 100                         0 : GPFS_DENY_READ;
 101         }
 102         DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
 103                    access_mask, allow, share_access, deny));
 104
 105         result = gpfswrap_set_share(fsp->fh->fd, allow, deny);
 106         if (result != 0) {
 107                 if (errno == ENOSYS) {
 108                         DEBUG(5, ("VFS module vfs_gpfs loaded, but gpfs "
 109                                   "set_share function support not available. "
 110                                   "Allowing access\n"));
 111                         return True;
 112                 } else {
 113                         DEBUG(10, ("gpfs_set_share failed: %s\n",
 114                                    strerror(errno)));
 115                 }
 116         }
 117
 118         return (result == 0);
 119 }
 120
 121 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
 122                                  uint32 share_mode, uint32 access_mask)
 123 {
 124
 125         struct gpfs_config_data *config;
 126         int ret = 0;
 127
 128         START_PROFILE(syscall_kernel_flock);
 129
 130         SMB_VFS_HANDLE_GET_DATA(handle, config,
 131                                 struct gpfs_config_data,
 132                                 return -1);
 133
 134         if(!config->sharemodes) {
 135                 return 0;
 136         }
 137
 138         kernel_flock(fsp->fh->fd, share_mode, access_mask);
 139
 140         if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) {
 141                 ret = -1;
 142         }
 143
 144         END_PROFILE(syscall_kernel_flock);
 145
 146         return ret;
 147 }
 148
 149 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
 150 {
 151
 152         struct gpfs_config_data *config;
 153
 154         SMB_VFS_HANDLE_GET_DATA(handle, config,
 155                                 struct gpfs_config_data,
 156                                 return -1);
 157
 158         if (config->sharemodes && (fsp->fh != NULL) && (fsp->fh->fd != -1)) {
 159                 set_gpfs_sharemode(fsp, 0, 0);
 160         }
 161
 162         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 163 }
 164
 165 static int set_gpfs_lease(int fd, int leasetype)
 166 {
 167         int gpfs_type = GPFS_LEASE_NONE;
 168
 169         if (leasetype == F_RDLCK) {
 170                 gpfs_type = GPFS_LEASE_READ;
 171         }
 172         if (leasetype == F_WRLCK) {
 173                 gpfs_type = GPFS_LEASE_WRITE;
 174         }
 175
 176         /* we unconditionally set CAP_LEASE, rather than looking for
 177            -1/EACCES as there is a bug in some versions of
 178            libgpfs_gpl.so which results in a leaked fd on /dev/ss0
 179            each time we try this with the wrong capabilities set
 180         */
 181         linux_set_lease_capability();
 182         return gpfswrap_set_lease(fd, gpfs_type);
 183 }
 184
 185 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
 186                              int leasetype)
 187 {
 188         struct gpfs_config_data *config;
 189         int ret=0;
 190
 191         START_PROFILE(syscall_linux_setlease);
 192
 193         SMB_VFS_HANDLE_GET_DATA(handle, config,
 194                                 struct gpfs_config_data,
 195                                 return -1);
 196
 197         if (linux_set_lease_sighandler(fsp->fh->fd) == -1)
 198                 return -1;
 199
 200         if (config->leases) {
 201                 /*
 202                  * Ensure the lease owner is root to allow
 203                  * correct delivery of lease-break signals.
 204                  */
 205                 become_root();
 206                 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
 207                 unbecome_root();
 208         }
 209
 210         END_PROFILE(syscall_linux_setlease);
 211
 212         return ret;
 213 }
 214
 215 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
 216                                       const char *path,
 217                                       const char *name,
 218                                       TALLOC_CTX *mem_ctx,
 219                                       char **found_name)
 220 {
 221         int result;
 222         char *full_path;
 223         char real_pathname[PATH_MAX+1];
 224         int buflen;
 225         bool mangled;
 226         struct gpfs_config_data *config;
 227
 228         SMB_VFS_HANDLE_GET_DATA(handle, config,
 229                                 struct gpfs_config_data,
 230                                 return -1);
 231
 232         if (!config->getrealfilename) {
 233                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 234                                                       mem_ctx, found_name);
 235         }
 236
 237         mangled = mangle_is_mangled(name, handle->conn->params);
 238         if (mangled) {
 239                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 240                                                       mem_ctx, found_name);
 241         }
 242
 243         full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
 244         if (full_path == NULL) {
 245                 errno = ENOMEM;
 246                 return -1;
 247         }
 248
 249         buflen = sizeof(real_pathname) - 1;
 250
 251         result = gpfswrap_get_realfilename_path(full_path, real_pathname,
 252                                                 &buflen);
 253
 254         TALLOC_FREE(full_path);
 255
 256         if ((result == -1) && (errno == ENOSYS)) {
 257                 return SMB_VFS_NEXT_GET_REAL_FILENAME(
 258                         handle, path, name, mem_ctx, found_name);
 259         }
 260
 261         if (result == -1) {
 262                 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
 263                            strerror(errno)));
 264                 return -1;
 265         }
 266
 267         /*
 268          * GPFS does not necessarily null-terminate the returned path
 269          * but instead returns the buffer length in buflen.
 270          */
 271
 272         if (buflen < sizeof(real_pathname)) {
 273                 real_pathname[buflen] = '\0';
 274         } else {
 275                 real_pathname[sizeof(real_pathname)-1] = '\0';
 276         }
 277
 278         DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
 279                    path, name, real_pathname));
 280
 281         name = strrchr_m(real_pathname, '/');
 282         if (name == NULL) {
 283                 errno = ENOENT;
 284                 return -1;
 285         }
 286
 287         *found_name = talloc_strdup(mem_ctx, name+1);
 288         if (*found_name == NULL) {
 289                 errno = ENOMEM;
 290                 return -1;
 291         }
 292
 293         return 0;
 294 }
 295
 296 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
 297 {
 298         unsigned int gpfs_aclflags = 0;
 299         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 300                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 301                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 302                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 303         gpfs_aclflags = control << 8;
 304         if (!(control & SEC_DESC_DACL_PRESENT))
 305                 gpfs_aclflags |= 0x00800000; /* ACL4_FLAG_NULL_DACL; */
 306         if (!(control & SEC_DESC_SACL_PRESENT))
 307                 gpfs_aclflags |= 0x01000000; /* ACL4_FLAG_NULL_SACL; */
 308         gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS*/
 309         /* gacl->v4Level1.acl_flags requires gpfs 3.5 */
 310         *(unsigned int *)&gacl->ace_v4 = gpfs_aclflags;
 311 }
 312
 313 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
 314 {
 315         uint16_t control = gpfs_aclflags >> 8;
 316         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 317                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 318                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 319                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 320         control |= SEC_DESC_SELF_RELATIVE;
 321         return control;
 322 }
 323
 324 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
 325 {
 326         gpfs_aclCount_t i;
 327         if (gacl==NULL)
 328         {
 329                 DEBUG(0, ("gpfs acl is NULL\n"));
 330                 return;
 331         }
 332
 333         DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
 334                       "control: %x\n",
 335                       gacl->acl_len, gacl->acl_level, gacl->acl_version,
 336                       gacl->acl_nace, gpfs_acl_flags(gacl)));
 337
 338         for(i=0; i<gacl->acl_nace; i++)
 339         {
 340                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 341                 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
 342                               "iflags:0x%x, who:%u\n",
 343                               i, gace->aceType, gace->aceFlags, gace->aceMask,
 344                               gace->aceIFlags, gace->aceWho));
 345         }
 346 }
 347
 348 /*
 349  * get the ACL from GPFS, allocated on the specified mem_ctx
 350  * internally retries when initial buffer was too small
 351  *
 352  * caller needs to cast result to either
 353  * raw = yes: struct gpfs_opaque_acl
 354  * raw = no: struct gpfs_acl
 355  *
 356  */
 357 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
 358                          const char *fname,
 359                          const bool raw,
 360                          const gpfs_aclType_t type)
 361 {
 362
 363         void *aclbuf;
 364         size_t size = 512;
 365         int ret, flags;
 366         unsigned int *len;
 367         size_t struct_size;
 368
 369 again:
 370
 371         aclbuf = talloc_zero_size(mem_ctx, size);
 372         if (aclbuf == NULL) {
 373                 errno = ENOMEM;
 374                 return NULL;
 375         }
 376
 377         if (raw) {
 378                 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
 379                 buf->acl_type = type;
 380                 flags = GPFS_GETACL_NATIVE;
 381                 len = (unsigned int *) &(buf->acl_buffer_len);
 382                 struct_size = sizeof(struct gpfs_opaque_acl);
 383         } else {
 384                 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
 385                 buf->acl_type = type;
 386                 buf->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */
 387                 flags = GPFS_GETACL_STRUCT;
 388                 len = &(buf->acl_len);
 389                 /* reserve space for control flags in gpfs 3.5 and beyond */
 390                 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
 391         }
 392
 393         /* set the length of the buffer as input value */
 394         *len = size;
 395
 396         errno = 0;
 397         ret = gpfswrap_getacl(discard_const_p(char, fname), flags, aclbuf);
 398         if ((ret != 0) && (errno == ENOSPC)) {
 399                 /*
 400                  * get the size needed to accommodate the complete buffer
 401                  *
 402                  * the value returned only applies to the ACL blob in the
 403                  * struct so make sure to also have headroom for the first
 404                  * struct members by adding room for the complete struct
 405                  * (might be a few bytes too much then)
 406                  */
 407                 size = *len + struct_size;
 408                 talloc_free(aclbuf);
 409                 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
 410                 goto again;
 411         }
 412
 413         if (ret != 0) {
 414                 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
 415                           strerror(errno)));
 416                 talloc_free(aclbuf);
 417                 return NULL;
 418         }
 419
 420         return aclbuf;
 421 }
 422
 423 /* Tries to get nfs4 acls and returns SMB ACL allocated.
 424  * On failure returns 1 if it got non-NFSv4 ACL to prompt
 425  * retry with POSIX ACL checks.
 426  * On failure returns -1 if there is system (GPFS) error, check errno.
 427  * Returns 0 on success
 428  */
 429 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx, const char *fname, SMB4ACL_T **ppacl)
 430 {
 431         gpfs_aclCount_t i;
 432         struct gpfs_acl *gacl = NULL;
 433         DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
 434
 435         /* Get the ACL */
 436         gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
 437                                                   false, 0);
 438         if (gacl == NULL) {
 439                 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
 440                            fname, strerror(errno)));
 441                 return -1;
 442         }
 443
 444         if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
 445                 DEBUG(10, ("Got non-nfsv4 acl\n"));
 446                 /* Retry with POSIX ACLs check */
 447                 talloc_free(gacl);
 448                 return 1;
 449         }
 450
 451         *ppacl = smb_create_smb4acl(mem_ctx);
 452
 453         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
 454                 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
 455                 smbacl4_set_controlflags(*ppacl, control);
 456         }
 457
 458         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
 459                    gacl->acl_len, gacl->acl_level, gacl->acl_version,
 460                    gacl->acl_nace, gpfs_acl_flags(gacl)));
 461
 462         for (i=0; i<gacl->acl_nace; i++) {
 463                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 464                 SMB_ACE4PROP_T smbace;
 465                 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
 466                            "who: %d\n", gace->aceType, gace->aceIFlags,
 467                            gace->aceFlags, gace->aceMask, gace->aceWho));
 468
 469                 ZERO_STRUCT(smbace);
 470                 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
 471                         smbace.flags |= SMB_ACE4_ID_SPECIAL;
 472                         switch (gace->aceWho) {
 473                         case ACE4_SPECIAL_OWNER:
 474                                 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
 475                                 break;
 476                         case ACE4_SPECIAL_GROUP:
 477                                 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
 478                                 break;
 479                         case ACE4_SPECIAL_EVERYONE:
 480                                 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
 481                                 break;
 482                         default:
 483                                 DEBUG(8, ("invalid special gpfs id %d "
 484                                           "ignored\n", gace->aceWho));
 485                                 continue; /* don't add it */
 486                         }
 487                 } else {
 488                         if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
 489                                 smbace.who.gid = gace->aceWho;
 490                         else
 491                                 smbace.who.uid = gace->aceWho;
 492                 }
 493
 494                 /* remove redundant deny entries */
 495                 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
 496                         struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
 497                         if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
 498                             prev->aceFlags == gace->aceFlags &&
 499                             prev->aceIFlags == gace->aceIFlags &&
 500                             (gace->aceMask & prev->aceMask) == 0 &&
 501                             gace->aceWho == prev->aceWho) {
 502                                 /* it's redundant - skip it */
 503                                 continue;
 504                         }
 505                 }
 506
 507                 smbace.aceType = gace->aceType;
 508                 smbace.aceFlags = gace->aceFlags;
 509                 smbace.aceMask = gace->aceMask;
 510                 smb_add_ace4(*ppacl, &smbace);
 511         }
 512
 513         talloc_free(gacl);
 514
 515         return 0;
 516 }
 517
 518 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
 519         files_struct *fsp, uint32 security_info,
 520         TALLOC_CTX *mem_ctx,
 521         struct security_descriptor **ppdesc)
 522 {
 523         SMB4ACL_T *pacl = NULL;
 524         int     result;
 525         struct gpfs_config_data *config;
 526         TALLOC_CTX *frame = talloc_stackframe();
 527         NTSTATUS status;
 528
 529         *ppdesc = NULL;
 530
 531         SMB_VFS_HANDLE_GET_DATA(handle, config,
 532                                 struct gpfs_config_data,
 533                                 return NT_STATUS_INTERNAL_ERROR);
 534
 535         if (!config->acl) {
 536                 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
 537                                                   mem_ctx, ppdesc);
 538                 TALLOC_FREE(frame);
 539                 return status;
 540         }
 541
 542         result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
 543
 544         if (result == 0) {
 545                 status = smb_fget_nt_acl_nfs4(fsp, security_info, mem_ctx,
 546                                               ppdesc, pacl);
 547                 TALLOC_FREE(frame);
 548                 return status;
 549         }
 550
 551         if (result > 0) {
 552                 DEBUG(10, ("retrying with posix acl...\n"));
 553                 status = posix_fget_nt_acl(fsp, security_info,
 554                                            mem_ctx, ppdesc);
 555                 TALLOC_FREE(frame);
 556                 return status;
 557         }
 558
 559         TALLOC_FREE(frame);
 560
 561         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 562         return map_nt_error_from_unix(errno);
 563 }
 564
 565 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
 566         const char *name,
 567         uint32 security_info,
 568         TALLOC_CTX *mem_ctx, struct security_descriptor **ppdesc)
 569 {
 570         SMB4ACL_T *pacl = NULL;
 571         int     result;
 572         struct gpfs_config_data *config;
 573         TALLOC_CTX *frame = talloc_stackframe();
 574         NTSTATUS status;
 575
 576         *ppdesc = NULL;
 577
 578         SMB_VFS_HANDLE_GET_DATA(handle, config,
 579                                 struct gpfs_config_data,
 580                                 return NT_STATUS_INTERNAL_ERROR);
 581
 582         if (!config->acl) {
 583                 status = SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info,
 584                                                  mem_ctx, ppdesc);
 585                 TALLOC_FREE(frame);
 586                 return status;
 587         }
 588
 589         result = gpfs_get_nfs4_acl(frame, name, &pacl);
 590
 591         if (result == 0) {
 592                 status = smb_get_nt_acl_nfs4(handle->conn, name, security_info,
 593                                            mem_ctx, ppdesc, pacl);
 594                 TALLOC_FREE(frame);
 595                 return status;
 596         }
 597
 598         if (result > 0) {
 599                 DEBUG(10, ("retrying with posix acl...\n"));
 600                 status =  posix_get_nt_acl(handle->conn, name, security_info,
 601                                            mem_ctx, ppdesc);
 602                 TALLOC_FREE(frame);
 603                 return status;
 604         }
 605
 606         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 607         TALLOC_FREE(frame);
 608         return map_nt_error_from_unix(errno);
 609 }
 610
 611 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
 612                                                 files_struct *fsp,
 613                                                 SMB4ACL_T *smbacl,
 614                                                 bool controlflags)
 615 {
 616         struct gpfs_acl *gacl;
 617         gpfs_aclLen_t gacl_len;
 618         SMB4ACE_T *smbace;
 619
 620         gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
 621                 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
 622
 623         gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
 624         if (gacl == NULL) {
 625                 DEBUG(0, ("talloc failed\n"));
 626                 errno = ENOMEM;
 627                 return NULL;
 628         }
 629
 630         gacl->acl_level = 0; /* GPFS_ACL_LEVEL_BASE */
 631         gacl->acl_version = GPFS_ACL_VERSION_NFS4;
 632         gacl->acl_type = GPFS_ACL_TYPE_NFS4;
 633         gacl->acl_nace = 0; /* change later... */
 634
 635         if (controlflags) {
 636                 gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */
 637                 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
 638         }
 639
 640         for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
 641                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
 642                 SMB_ACE4PROP_T  *aceprop = smb_get_ace4(smbace);
 643
 644                 gace->aceType = aceprop->aceType;
 645                 gace->aceFlags = aceprop->aceFlags;
 646                 gace->aceMask = aceprop->aceMask;
 647
 648                 /*
 649                  * GPFS can't distinguish between WRITE and APPEND on
 650                  * files, so one being set without the other is an
 651                  * error. Sorry for the many ()'s :-)
 652                  */
 653
 654                 if (!fsp->is_directory
 655                     &&
 656                     ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
 657                       && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
 658                      ||
 659                      (((gace->aceMask & ACE4_MASK_WRITE) != 0)
 660                       && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
 661                     &&
 662                     lp_parm_bool(fsp->conn->params->service, "gpfs",
 663                                  "merge_writeappend", True)) {
 664                         DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
 665                                   "WRITE^APPEND, setting WRITE|APPEND\n",
 666                                   fsp_str_dbg(fsp)));
 667                         gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
 668                 }
 669
 670                 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
 671
 672                 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
 673                 {
 674                         switch(aceprop->who.special_id)
 675                         {
 676                         case SMB_ACE4_WHO_EVERYONE:
 677                                 gace->aceWho = ACE4_SPECIAL_EVERYONE;
 678                                 break;
 679                         case SMB_ACE4_WHO_OWNER:
 680                                 gace->aceWho = ACE4_SPECIAL_OWNER;
 681                                 break;
 682                         case SMB_ACE4_WHO_GROUP:
 683                                 gace->aceWho = ACE4_SPECIAL_GROUP;
 684                                 break;
 685                         default:
 686                                 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
 687                                 continue; /* don't add it !!! */
 688                         }
 689                 } else {
 690                         /* just only for the type safety... */
 691                         if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
 692                                 gace->aceWho = aceprop->who.gid;
 693                         else
 694                                 gace->aceWho = aceprop->who.uid;
 695                 }
 696
 697                 gacl->acl_nace++;
 698         }
 699         gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
 700                 - (char *)gacl;
 701         return gacl;
 702 }
 703
 704 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
 705                                    files_struct *fsp,
 706                                    SMB4ACL_T *smbacl)
 707 {
 708         int ret;
 709         struct gpfs_acl *gacl;
 710         TALLOC_CTX *mem_ctx = talloc_tos();
 711
 712         gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
 713         if (gacl == NULL) { /* out of memory */
 714                 return False;
 715         }
 716         ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 717                               GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
 718
 719         if ((ret != 0) && (errno == EINVAL)) {
 720                 DEBUG(10, ("Retry without nfs41 control flags\n"));
 721                 talloc_free(gacl);
 722                 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
 723                 if (gacl == NULL) { /* out of memory */
 724                         return False;
 725                 }
 726                 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 727                                       GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
 728                                       gacl);
 729         }
 730
 731         if (ret != 0) {
 732                 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
 733                 gpfs_dumpacl(8, gacl);
 734                 return False;
 735         }
 736
 737         DEBUG(10, ("gpfs_putacl succeeded\n"));
 738         return True;
 739 }
 740
 741 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
 742 {
 743         struct gpfs_acl *acl;
 744         NTSTATUS result = NT_STATUS_ACCESS_DENIED;
 745
 746         acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
 747                                                  fsp->fsp_name->base_name,
 748                                                  false, 0);
 749         if (acl == NULL) {
 750                 return map_nt_error_from_unix(errno);
 751         }
 752
 753         if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
 754                 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
 755                                  "refuse_dacl_protected", false)
 756                     && (psd->type&SEC_DESC_DACL_PROTECTED)) {
 757                         DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
 758                         talloc_free(acl);
 759                         return NT_STATUS_NOT_SUPPORTED;
 760                 }
 761
 762                 result = smb_set_nt_acl_nfs4(handle,
 763                         fsp, security_info_sent, psd,
 764                         gpfsacl_process_smbacl);
 765         } else { /* assume POSIX ACL - by default... */
 766                 result = set_nt_acl(fsp, security_info_sent, psd);
 767         }
 768
 769         talloc_free(acl);
 770         return result;
 771 }
 772
 773 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
 774 {
 775         struct gpfs_config_data *config;
 776
 777         SMB_VFS_HANDLE_GET_DATA(handle, config,
 778                                 struct gpfs_config_data,
 779                                 return NT_STATUS_INTERNAL_ERROR);
 780
 781         if (!config->acl) {
 782                 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 783         }
 784
 785         return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
 786 }
 787
 788 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
 789 {
 790         SMB_ACL_T result;
 791         gpfs_aclCount_t i;
 792
 793         result = sys_acl_init(mem_ctx);
 794         if (result == NULL) {
 795                 errno = ENOMEM;
 796                 return NULL;
 797         }
 798
 799         result->count = pacl->acl_nace;
 800         result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
 801                                      result->count);
 802         if (result->acl == NULL) {
 803                 TALLOC_FREE(result);
 804                 errno = ENOMEM;
 805                 return NULL;
 806         }
 807
 808         for (i=0; i<pacl->acl_nace; i++) {
 809                 struct smb_acl_entry *ace = &result->acl[i];
 810                 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
 811
 812                 DEBUG(10, ("Converting type %d id %lu perm %x\n",
 813                            (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
 814                            (int)g_ace->ace_perm));
 815
 816                 switch (g_ace->ace_type) {
 817                 case GPFS_ACL_USER:
 818                         ace->a_type = SMB_ACL_USER;
 819                         ace->info.user.uid = (uid_t)g_ace->ace_who;
 820                         break;
 821                 case GPFS_ACL_USER_OBJ:
 822                         ace->a_type = SMB_ACL_USER_OBJ;
 823                         break;
 824                 case GPFS_ACL_GROUP:
 825                         ace->a_type = SMB_ACL_GROUP;
 826                         ace->info.group.gid = (gid_t)g_ace->ace_who;
 827                         break;
 828                 case GPFS_ACL_GROUP_OBJ:
 829                         ace->a_type = SMB_ACL_GROUP_OBJ;
 830                         break;
 831                 case GPFS_ACL_OTHER:
 832                         ace->a_type = SMB_ACL_OTHER;
 833                         break;
 834                 case GPFS_ACL_MASK:
 835                         ace->a_type = SMB_ACL_MASK;
 836                         break;
 837                 default:
 838                         DEBUG(10, ("Got invalid ace_type: %d\n",
 839                                    g_ace->ace_type));
 840                         TALLOC_FREE(result);
 841                         errno = EINVAL;
 842                         return NULL;
 843                 }
 844
 845                 ace->a_perm = 0;
 846                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
 847                         SMB_ACL_READ : 0;
 848                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
 849                         SMB_ACL_WRITE : 0;
 850                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
 851                         SMB_ACL_EXECUTE : 0;
 852
 853                 DEBUGADD(10, ("Converted to %d perm %x\n",
 854                               ace->a_type, ace->a_perm));
 855         }
 856
 857         return result;
 858 }
 859
 860 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type,
 861                                        TALLOC_CTX *mem_ctx)
 862 {
 863         struct gpfs_acl *pacl;
 864         SMB_ACL_T result = NULL;
 865
 866         pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
 867
 868         if (pacl == NULL) {
 869                 DEBUG(10, ("vfs_gpfs_getacl failed for %s with %s\n",
 870                            path, strerror(errno)));
 871                 if (errno == 0) {
 872                         errno = EINVAL;
 873                 }
 874                 goto done;
 875         }
 876
 877         if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
 878                 DEBUG(10, ("Got acl version %d, expected %d\n",
 879                            pacl->acl_version, GPFS_ACL_VERSION_POSIX));
 880                 errno = EINVAL;
 881                 goto done;
 882         }
 883
 884         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
 885                    pacl->acl_len, pacl->acl_level, pacl->acl_version,
 886                    pacl->acl_nace));
 887
 888         result = gpfs2smb_acl(pacl, mem_ctx);
 889         if (result != NULL) {
 890                 errno = 0;
 891         }
 892
 893  done:
 894
 895         if (pacl != NULL) {
 896                 talloc_free(pacl);
 897         }
 898         if (errno != 0) {
 899                 TALLOC_FREE(result);
 900         }
 901         return result;
 902 }
 903
 904 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
 905                                           const char *path_p,
 906                                           SMB_ACL_TYPE_T type,
 907                                           TALLOC_CTX *mem_ctx)
 908 {
 909         gpfs_aclType_t gpfs_type;
 910         struct gpfs_config_data *config;
 911
 912         SMB_VFS_HANDLE_GET_DATA(handle, config,
 913                                 struct gpfs_config_data,
 914                                 return NULL);
 915
 916         if (!config->acl) {
 917                 return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p,
 918                                                      type, mem_ctx);
 919         }
 920
 921         switch(type) {
 922         case SMB_ACL_TYPE_ACCESS:
 923                 gpfs_type = GPFS_ACL_TYPE_ACCESS;
 924                 break;
 925         case SMB_ACL_TYPE_DEFAULT:
 926                 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
 927                 break;
 928         default:
 929                 DEBUG(0, ("Got invalid type: %d\n", type));
 930                 smb_panic("exiting");
 931         }
 932
 933         return gpfsacl_get_posix_acl(path_p, gpfs_type, mem_ctx);
 934 }
 935
 936 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
 937                                         files_struct *fsp,
 938                                         TALLOC_CTX *mem_ctx)
 939 {
 940         struct gpfs_config_data *config;
 941
 942         SMB_VFS_HANDLE_GET_DATA(handle, config,
 943                                 struct gpfs_config_data,
 944                                 return NULL);
 945
 946         if (!config->acl) {
 947                 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
 948         }
 949
 950         return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
 951                                      GPFS_ACL_TYPE_ACCESS, mem_ctx);
 952 }
 953
 954 static int gpfsacl_sys_acl_blob_get_file(vfs_handle_struct *handle,
 955                                       const char *path_p,
 956                                       TALLOC_CTX *mem_ctx,
 957                                       char **blob_description,
 958                                       DATA_BLOB *blob)
 959 {
 960         struct gpfs_config_data *config;
 961         struct gpfs_opaque_acl *acl = NULL;
 962         DATA_BLOB aclblob;
 963         int result;
 964
 965         SMB_VFS_HANDLE_GET_DATA(handle, config,
 966                                 struct gpfs_config_data,
 967                                 return -1);
 968
 969         if (!config->acl) {
 970                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p,
 971                                                           mem_ctx,
 972                                                           blob_description,
 973                                                           blob);
 974         }
 975
 976         errno = 0;
 977         acl = (struct gpfs_opaque_acl *)
 978                         vfs_gpfs_getacl(mem_ctx,
 979                                         path_p,
 980                                         true,
 981                                         GPFS_ACL_TYPE_NFS4);
 982
 983         if (errno) {
 984                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
 985                                         errno, strerror(errno)));
 986
 987                 /* EINVAL means POSIX ACL, bail out on other cases */
 988                 if (errno != EINVAL) {
 989                         return -1;
 990                 }
 991         }
 992
 993         if (acl != NULL) {
 994                 /*
 995                  * file has NFSv4 ACL
 996                  *
 997                  * we only need the actual ACL blob here
 998                  * acl_version will always be NFS4 because we asked
 999                  * for NFS4
1000                  * acl_type is only used for POSIX ACLs
1001                  */
1002                 aclblob.data = (uint8_t*) acl->acl_var_data;
1003                 aclblob.length = acl->acl_buffer_len;
1004
1005                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1006                 if (!*blob_description) {
1007                         talloc_free(acl);
1008                         errno = ENOMEM;
1009                         return -1;
1010                 }
1011
1012                 result = non_posix_sys_acl_blob_get_file_helper(handle, path_p,
1013                                                                 aclblob,
1014                                                                 mem_ctx, blob);
1015
1016                 talloc_free(acl);
1017                 return result;
1018         }
1019
1020         /* fall back to POSIX ACL */
1021         return posix_sys_acl_blob_get_file(handle, path_p, mem_ctx,
1022                                            blob_description, blob);
1023 }
1024
1025 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1026                                       files_struct *fsp,
1027                                       TALLOC_CTX *mem_ctx,
1028                                       char **blob_description,
1029                                       DATA_BLOB *blob)
1030 {
1031         struct gpfs_config_data *config;
1032         struct gpfs_opaque_acl *acl = NULL;
1033         DATA_BLOB aclblob;
1034         int result;
1035
1036         SMB_VFS_HANDLE_GET_DATA(handle, config,
1037                                 struct gpfs_config_data,
1038                                 return -1);
1039
1040         if (!config->acl) {
1041                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1042                                                         blob_description, blob);
1043         }
1044
1045         errno = 0;
1046         acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1047                                                 fsp->fsp_name->base_name,
1048                                                 true,
1049                                                 GPFS_ACL_TYPE_NFS4);
1050
1051         if (errno) {
1052                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1053                                         errno, strerror(errno)));
1054
1055                 /* EINVAL means POSIX ACL, bail out on other cases */
1056                 if (errno != EINVAL) {
1057                         return -1;
1058                 }
1059         }
1060
1061         if (acl != NULL) {
1062                 /*
1063                  * file has NFSv4 ACL
1064                  *
1065                  * we only need the actual ACL blob here
1066                  * acl_version will always be NFS4 because we asked
1067                  * for NFS4
1068                  * acl_type is only used for POSIX ACLs
1069                  */
1070                 aclblob.data = (uint8_t*) acl->acl_var_data;
1071                 aclblob.length = acl->acl_buffer_len;
1072
1073                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1074                 if (!*blob_description) {
1075                         talloc_free(acl);
1076                         errno = ENOMEM;
1077                         return -1;
1078                 }
1079
1080                 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1081                                                               aclblob, mem_ctx,
1082                                                               blob);
1083
1084                 talloc_free(acl);
1085                 return result;
1086         }
1087
1088         /* fall back to POSIX ACL */
1089         return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1090                                          blob_description, blob);
1091 }
1092
1093 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1094                                      SMB_ACL_TYPE_T type)
1095 {
1096         gpfs_aclLen_t len;
1097         struct gpfs_acl *result;
1098         int i;
1099
1100         DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1101
1102         len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1103                 sizeof(gpfs_ace_v1_t);
1104
1105         result = (struct gpfs_acl *)SMB_MALLOC(len);
1106         if (result == NULL) {
1107                 errno = ENOMEM;
1108                 return result;
1109         }
1110
1111         result->acl_len = len;
1112         result->acl_level = 0;
1113         result->acl_version = GPFS_ACL_VERSION_POSIX;
1114         result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1115                 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1116         result->acl_nace = pacl->count;
1117
1118         for (i=0; i<pacl->count; i++) {
1119                 const struct smb_acl_entry *ace = &pacl->acl[i];
1120                 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1121
1122                 DEBUG(10, ("Converting type %d perm %x\n",
1123                            (int)ace->a_type, (int)ace->a_perm));
1124
1125                 g_ace->ace_perm = 0;
1126
1127                 switch(ace->a_type) {
1128                 case SMB_ACL_USER:
1129                         g_ace->ace_type = GPFS_ACL_USER;
1130                         g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1131                         break;
1132                 case SMB_ACL_USER_OBJ:
1133                         g_ace->ace_type = GPFS_ACL_USER_OBJ;
1134                         g_ace->ace_perm |= ACL_PERM_CONTROL;
1135                         g_ace->ace_who = 0;
1136                         break;
1137                 case SMB_ACL_GROUP:
1138                         g_ace->ace_type = GPFS_ACL_GROUP;
1139                         g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1140                         break;
1141                 case SMB_ACL_GROUP_OBJ:
1142                         g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1143                         g_ace->ace_who = 0;
1144                         break;
1145                 case SMB_ACL_MASK:
1146                         g_ace->ace_type = GPFS_ACL_MASK;
1147                         g_ace->ace_perm = 0x8f;
1148                         g_ace->ace_who = 0;
1149                         break;
1150                 case SMB_ACL_OTHER:
1151                         g_ace->ace_type = GPFS_ACL_OTHER;
1152                         g_ace->ace_who = 0;
1153                         break;
1154                 default:
1155                         DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1156                         errno = EINVAL;
1157                         SAFE_FREE(result);
1158                         return NULL;
1159                 }
1160
1161                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1162                         ACL_PERM_READ : 0;
1163                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1164                         ACL_PERM_WRITE : 0;
1165                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1166                         ACL_PERM_EXECUTE : 0;
1167
1168                 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1169                               g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1170         }
1171
1172         return result;
1173 }
1174
1175 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
1176                                     const char *name,
1177                                     SMB_ACL_TYPE_T type,
1178                                     SMB_ACL_T theacl)
1179 {
1180         struct gpfs_acl *gpfs_acl;
1181         int result;
1182         struct gpfs_config_data *config;
1183
1184         SMB_VFS_HANDLE_GET_DATA(handle, config,
1185                                 struct gpfs_config_data,
1186                                 return -1);
1187
1188         if (!config->acl) {
1189                 return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, type, theacl);
1190         }
1191
1192         gpfs_acl = smb2gpfs_acl(theacl, type);
1193         if (gpfs_acl == NULL) {
1194                 return -1;
1195         }
1196
1197         result = gpfswrap_putacl(discard_const_p(char, name),
1198                                  GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA, gpfs_acl);
1199
1200         SAFE_FREE(gpfs_acl);
1201         return result;
1202 }
1203
1204 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1205                                   files_struct *fsp,
1206                                   SMB_ACL_T theacl)
1207 {
1208         struct gpfs_config_data *config;
1209
1210         SMB_VFS_HANDLE_GET_DATA(handle, config,
1211                                 struct gpfs_config_data,
1212                                 return -1);
1213
1214         if (!config->acl) {
1215                 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
1216         }
1217
1218         return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
1219                                         SMB_ACL_TYPE_ACCESS, theacl);
1220 }
1221
1222 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
1223                                            const char *path)
1224 {
1225         struct gpfs_config_data *config;
1226
1227         SMB_VFS_HANDLE_GET_DATA(handle, config,
1228                                 struct gpfs_config_data,
1229                                 return -1);
1230
1231         if (!config->acl) {
1232                 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, path);
1233         }
1234
1235         errno = ENOTSUP;
1236         return -1;
1237 }
1238
1239 /*
1240  * Assumed: mode bits are shiftable and standard
1241  * Output: the new aceMask field for an smb nfs4 ace
1242  */
1243 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
1244 {
1245         const uint32 posix_nfs4map[3] = {
1246                 SMB_ACE4_EXECUTE, /* execute */
1247                 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1248                 SMB_ACE4_READ_DATA /* read */
1249         };
1250         int     i;
1251         uint32_t        posix_mask = 0x01;
1252         uint32_t        posix_bit;
1253         uint32_t        nfs4_bits;
1254
1255         for(i=0; i<3; i++) {
1256                 nfs4_bits = posix_nfs4map[i];
1257                 posix_bit = rwx & posix_mask;
1258
1259                 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1260                         if (posix_bit)
1261                                 aceMask |= nfs4_bits;
1262                         else
1263                                 aceMask &= ~nfs4_bits;
1264                 } else {
1265                         /* add deny bits when suitable */
1266                         if (!posix_bit)
1267                                 aceMask |= nfs4_bits;
1268                         else
1269                                 aceMask &= ~nfs4_bits;
1270                 } /* other ace types are unexpected */
1271
1272                 posix_mask <<= 1;
1273         }
1274
1275         return aceMask;
1276 }
1277
1278 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1279                              const char *path, mode_t mode)
1280 {
1281         SMB4ACL_T *pacl = NULL;
1282         int     result;
1283         bool    haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1284         int     i;
1285         files_struct    fake_fsp; /* TODO: rationalize parametrization */
1286         SMB4ACE_T       *smbace;
1287         TALLOC_CTX *frame = talloc_stackframe();
1288
1289         DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1290
1291         result = gpfs_get_nfs4_acl(frame, path, &pacl);
1292         if (result) {
1293                 TALLOC_FREE(frame);
1294                 return result;
1295         }
1296
1297         if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1298                 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1299         }
1300
1301         for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1302                 SMB_ACE4PROP_T  *ace = smb_get_ace4(smbace);
1303                 uint32_t        specid = ace->who.special_id;
1304
1305                 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1306                     ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1307                     specid <= SMB_ACE4_WHO_EVERYONE) {
1308
1309                         uint32_t newMask;
1310
1311                         if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1312                                 haveAllowEntry[specid] = True;
1313
1314                         /* mode >> 6 for @owner, mode >> 3 for @group,
1315                          * mode >> 0 for @everyone */
1316                         newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1317                                                       mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1318                         if (ace->aceMask!=newMask) {
1319                                 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1320                                            path, ace->aceMask, newMask, specid));
1321                         }
1322                         ace->aceMask = newMask;
1323                 }
1324         }
1325
1326         /* make sure we have at least ALLOW entries
1327          * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1328          * - if necessary
1329          */
1330         for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1331                 SMB_ACE4PROP_T  ace;
1332
1333                 if (haveAllowEntry[i]==True)
1334                         continue;
1335
1336                 ZERO_STRUCT(ace);
1337                 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1338                 ace.flags |= SMB_ACE4_ID_SPECIAL;
1339                 ace.who.special_id = i;
1340
1341                 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1342                         ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1343
1344                 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1345                                                   mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1346
1347                 /* don't add unnecessary aces */
1348                 if (!ace.aceMask)
1349                         continue;
1350
1351                 /* we add it to the END - as windows expects allow aces */
1352                 smb_add_ace4(pacl, &ace);
1353                 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1354                            path, mode, i, ace.aceMask));
1355         }
1356
1357         /* don't add complementary DENY ACEs here */
1358         ZERO_STRUCT(fake_fsp);
1359         fake_fsp.fsp_name = synthetic_smb_fname(
1360                 frame, path, NULL, NULL);
1361         if (fake_fsp.fsp_name == NULL) {
1362                 errno = ENOMEM;
1363                 TALLOC_FREE(frame);
1364                 return -1;
1365         }
1366         /* put the acl */
1367         if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1368                 TALLOC_FREE(frame);
1369                 return -1;
1370         }
1371
1372         TALLOC_FREE(frame);
1373         return 0; /* ok for [f]chmod */
1374 }
1375
1376 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1377 {
1378         struct smb_filename *smb_fname_cpath;
1379         int rc;
1380
1381         smb_fname_cpath = synthetic_smb_fname(talloc_tos(), path, NULL, NULL);
1382         if (smb_fname_cpath == NULL) {
1383                 errno = ENOMEM;
1384                 return -1;
1385         }
1386
1387         if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
1388                 return -1;
1389         }
1390
1391         /* avoid chmod() if possible, to preserve acls */
1392         if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
1393                 return 0;
1394         }
1395
1396         rc = gpfsacl_emu_chmod(handle, path, mode);
1397         if (rc == 1)
1398                 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
1399         return rc;
1400 }
1401
1402 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1403 {
1404                  SMB_STRUCT_STAT st;
1405                  int rc;
1406
1407                  if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1408                          return -1;
1409                  }
1410
1411                  /* avoid chmod() if possible, to preserve acls */
1412                  if ((st.st_ex_mode & ~S_IFMT) == mode) {
1413                          return 0;
1414                  }
1415
1416                  rc = gpfsacl_emu_chmod(handle, fsp->fsp_name->base_name,
1417                                         mode);
1418                  if (rc == 1)
1419                          return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1420                  return rc;
1421 }
1422
1423 static int gpfs_set_xattr(struct vfs_handle_struct *handle,  const char *path,
1424                            const char *name, const void *value, size_t size,  int flags){
1425         struct xattr_DOSATTRIB dosattrib;
1426         enum ndr_err_code ndr_err;
1427         DATA_BLOB blob;
1428         unsigned int dosmode=0;
1429         struct gpfs_winattr attrs;
1430         int ret = 0;
1431         struct gpfs_config_data *config;
1432
1433         SMB_VFS_HANDLE_GET_DATA(handle, config,
1434                                 struct gpfs_config_data,
1435                                 return -1);
1436
1437         if (!config->winattr) {
1438                 DEBUG(10, ("gpfs_set_xattr:name is %s -> next\n",name));
1439                 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
1440         }
1441
1442         DEBUG(10, ("gpfs_set_xattr: %s \n",path));
1443
1444         /* Only handle DOS Attributes */
1445         if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
1446                 DEBUG(5, ("gpfs_set_xattr:name is %s\n",name));
1447                 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
1448         }
1449
1450         blob.data = discard_const_p(uint8_t, value);
1451         blob.length = size;
1452
1453         ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &dosattrib,
1454                         (ndr_pull_flags_fn_t)ndr_pull_xattr_DOSATTRIB);
1455
1456         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1457                 DEBUG(1, ("gpfs_set_xattr: bad ndr decode "
1458                           "from EA on file %s: Error = %s\n",
1459                           path, ndr_errstr(ndr_err)));
1460                 return false;
1461         }
1462
1463         if (dosattrib.version != 3) {
1464                 DEBUG(1, ("gpfs_set_xattr: expected dosattrib version 3, got "
1465                           "%d\n", (int)dosattrib.version));
1466                 return false;
1467         }
1468         if (!(dosattrib.info.info3.valid_flags & XATTR_DOSINFO_ATTRIB)) {
1469                 DEBUG(10, ("gpfs_set_xattr: XATTR_DOSINFO_ATTRIB not "
1470                            "valid, ignoring\n"));
1471                 return true;
1472         }
1473
1474         dosmode = dosattrib.info.info3.attrib;
1475
1476         attrs.winAttrs = 0;
1477         /*Just map RD_ONLY, ARCHIVE, SYSTEM HIDDEN and SPARSE. Ignore the others*/
1478         if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1479                 attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
1480         }
1481         if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1482                         attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
1483                 }
1484         if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1485                         attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
1486                 }
1487         if (dosmode & FILE_ATTRIBUTE_READONLY){
1488                         attrs.winAttrs |= GPFS_WINATTR_READONLY;
1489         }
1490         if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1491                 attrs.winAttrs |= GPFS_WINATTR_SPARSE_FILE;
1492         }
1493
1494
1495         ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1496                                          GPFS_WINATTR_SET_ATTRS, &attrs);
1497         if ( ret == -1){
1498                 if (errno == ENOSYS) {
1499                         return SMB_VFS_NEXT_SETXATTR(handle, path, name, value,
1500                                                      size, flags);
1501                 }
1502
1503                 DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
1504                 return -1;
1505         }
1506
1507         DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
1508         return 0;
1509 }
1510
1511 static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle,  const char *path,
1512                               const char *name, void *value, size_t size){
1513         char *attrstr = value;
1514         unsigned int dosmode = 0;
1515         struct gpfs_winattr attrs;
1516         int ret = 0;
1517         struct gpfs_config_data *config;
1518
1519         SMB_VFS_HANDLE_GET_DATA(handle, config,
1520                                 struct gpfs_config_data,
1521                                 return -1);
1522
1523         if (!config->winattr) {
1524                 DEBUG(10, ("gpfs_get_xattr:name is %s -> next\n",name));
1525                 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
1526         }
1527
1528         DEBUG(10, ("gpfs_get_xattr: %s \n",path));
1529
1530         /* Only handle DOS Attributes */
1531         if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
1532                 DEBUG(5, ("gpfs_get_xattr:name is %s\n",name));
1533                 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
1534         }
1535
1536         ret = gpfswrap_get_winattrs_path(discard_const_p(char, path), &attrs);
1537         if ( ret == -1){
1538                 int dbg_lvl;
1539
1540                 if (errno == ENOSYS) {
1541                         return SMB_VFS_NEXT_GETXATTR(handle, path, name, value,
1542                                                      size);
1543                 }
1544
1545                 if (errno != EPERM && errno != EACCES) {
1546                         dbg_lvl = 1;
1547                 } else {
1548                         dbg_lvl = 5;
1549                 }
1550                 DEBUG(dbg_lvl, ("gpfs_get_xattr: Get GPFS attributes failed: "
1551                               "%d (%s)\n", ret, strerror(errno)));
1552                 return -1;
1553         }
1554
1555         DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
1556
1557         /*Just map RD_ONLY, ARCHIVE, SYSTEM, HIDDEN and SPARSE. Ignore the others*/
1558         if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
1559                 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1560         }
1561         if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
1562                 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1563         }
1564         if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
1565                 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1566         }
1567         if (attrs.winAttrs & GPFS_WINATTR_READONLY){
1568                 dosmode |= FILE_ATTRIBUTE_READONLY;
1569         }
1570         if (attrs.winAttrs & GPFS_WINATTR_SPARSE_FILE) {
1571                 dosmode |= FILE_ATTRIBUTE_SPARSE;
1572         }
1573
1574         snprintf(attrstr, size, "0x%2.2x",
1575                  (unsigned int)(dosmode & SAMBA_ATTRIBUTES_MASK));
1576         DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
1577         return 4;
1578 }
1579
1580 #if defined(HAVE_FSTATAT)
1581 static int stat_with_capability(struct vfs_handle_struct *handle,
1582                                 struct smb_filename *smb_fname, int flag)
1583 {
1584         int fd = -1;
1585         bool b;
1586         char *dir_name;
1587         const char *rel_name = NULL;
1588         struct stat st;
1589         int ret = -1;
1590
1591         b = parent_dirname(talloc_tos(), smb_fname->base_name,
1592                            &dir_name, &rel_name);
1593         if (!b) {
1594                 errno = ENOMEM;
1595                 return -1;
1596         }
1597
1598         fd = open(dir_name, O_RDONLY, 0);
1599         TALLOC_FREE(dir_name);
1600         if (fd == -1) {
1601                 return -1;
1602         }
1603
1604         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1605         ret = fstatat(fd, rel_name, &st, flag);
1606         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1607
1608         close(fd);
1609
1610         if (ret == 0) {
1611                 init_stat_ex_from_stat(
1612                         &smb_fname->st, &st,
1613                         lp_fake_directory_create_times(SNUM(handle->conn)));
1614         }
1615
1616         return ret;
1617 }
1618 #endif
1619
1620 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1621                          struct smb_filename *smb_fname)
1622 {
1623         struct gpfs_winattr attrs;
1624         char *fname = NULL;
1625         NTSTATUS status;
1626         int ret;
1627         struct gpfs_config_data *config;
1628
1629         SMB_VFS_HANDLE_GET_DATA(handle, config,
1630                                 struct gpfs_config_data,
1631                                 return -1);
1632
1633         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1634 #if defined(HAVE_FSTATAT)
1635         if (ret == -1 && errno == EACCES) {
1636                 DEBUG(10, ("Trying stat with capability for %s\n",
1637                            smb_fname->base_name));
1638                 ret = stat_with_capability(handle, smb_fname, 0);
1639         }
1640 #endif
1641         if (ret == -1) {
1642                 return -1;
1643         }
1644
1645         if (!config->winattr) {
1646                 return 0;
1647         }
1648
1649         status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
1650         if (!NT_STATUS_IS_OK(status)) {
1651                 errno = map_errno_from_nt_status(status);
1652                 return -1;
1653         }
1654         ret = gpfswrap_get_winattrs_path(discard_const_p(char, fname), &attrs);
1655         TALLOC_FREE(fname);
1656         if (ret == 0) {
1657                 smb_fname->st.st_ex_calculated_birthtime = false;
1658                 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1659                 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1660         }
1661         return 0;
1662 }
1663
1664 static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
1665                           struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1666 {
1667         struct gpfs_winattr attrs;
1668         int ret;
1669         struct gpfs_config_data *config;
1670
1671         SMB_VFS_HANDLE_GET_DATA(handle, config,
1672                                 struct gpfs_config_data,
1673                                 return -1);
1674
1675         ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1676         if (ret == -1) {
1677                 return -1;
1678         }
1679         if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
1680                 return 0;
1681         }
1682         if (!config->winattr) {
1683                 return 0;
1684         }
1685
1686         ret = gpfswrap_get_winattrs(fsp->fh->fd, &attrs);
1687         if (ret == 0) {
1688                 sbuf->st_ex_calculated_birthtime = false;
1689                 sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1690                 sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1691         }
1692         return 0;
1693 }
1694
1695 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1696                           struct smb_filename *smb_fname)
1697 {
1698         struct gpfs_winattr attrs;
1699         char *path = NULL;
1700         NTSTATUS status;
1701         int ret;
1702         struct gpfs_config_data *config;
1703
1704         SMB_VFS_HANDLE_GET_DATA(handle, config,
1705                                 struct gpfs_config_data,
1706                                 return -1);
1707
1708         ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1709 #if defined(HAVE_FSTATAT)
1710         if (ret == -1 && errno == EACCES) {
1711                 DEBUG(10, ("Trying lstat with capability for %s\n",
1712                            smb_fname->base_name));
1713                 ret = stat_with_capability(handle, smb_fname,
1714                                            AT_SYMLINK_NOFOLLOW);
1715         }
1716 #endif
1717
1718         if (ret == -1) {
1719                 return -1;
1720         }
1721         if (!config->winattr) {
1722                 return 0;
1723         }
1724
1725         status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1726         if (!NT_STATUS_IS_OK(status)) {
1727                 errno = map_errno_from_nt_status(status);
1728                 return -1;
1729         }
1730         ret = gpfswrap_get_winattrs_path(discard_const_p(char, path), &attrs);
1731         TALLOC_FREE(path);
1732         if (ret == 0) {
1733                 smb_fname->st.st_ex_calculated_birthtime = false;
1734                 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1735                 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1736         }
1737         return 0;
1738 }
1739
1740 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1741                                   int idx, int *flags)
1742 {
1743         if (!null_timespec(ts)) {
1744                 *flags |= 1 << idx;
1745                 gt[idx].tv_sec = ts.tv_sec;
1746                 gt[idx].tv_nsec = ts.tv_nsec;
1747                 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1748         }
1749 }
1750
1751 static int smbd_gpfs_set_times_path(char *path, struct smb_file_time *ft)
1752 {
1753         gpfs_timestruc_t gpfs_times[4];
1754         int flags = 0;
1755         int rc;
1756
1757         ZERO_ARRAY(gpfs_times);
1758         timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1759         timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1760         /* No good mapping from LastChangeTime to ctime, not storing */
1761         timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1762
1763         if (!flags) {
1764                 DEBUG(10, ("nothing to do, return to avoid EINVAL\n"));
1765                 return 0;
1766         }
1767
1768         rc = gpfswrap_set_times_path(path, flags, gpfs_times);
1769
1770         if (rc != 0 && errno != ENOSYS) {
1771                 DEBUG(1,("gpfs_set_times() returned with error %s\n",
1772                         strerror(errno)));
1773         }
1774
1775         return rc;
1776 }
1777
1778 static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
1779                         const struct smb_filename *smb_fname,
1780                         struct smb_file_time *ft)
1781 {
1782
1783         struct gpfs_winattr attrs;
1784         int ret;
1785         char *path = NULL;
1786         NTSTATUS status;
1787         struct gpfs_config_data *config;
1788
1789         SMB_VFS_HANDLE_GET_DATA(handle, config,
1790                                 struct gpfs_config_data,
1791                                 return -1);
1792
1793         status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1794         if (!NT_STATUS_IS_OK(status)) {
1795                 errno = map_errno_from_nt_status(status);
1796                 return -1;
1797         }
1798
1799         /* Try to use gpfs_set_times if it is enabled and available */
1800         if (config->settimes) {
1801                 ret = smbd_gpfs_set_times_path(path, ft);
1802
1803                 if (ret == 0 || (ret == -1 && errno != ENOSYS)) {
1804                         return ret;
1805                 }
1806         }
1807
1808         DEBUG(10,("gpfs_set_times() not available or disabled, "
1809                   "use ntimes and winattr\n"));
1810
1811         ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1812         if(ret == -1){
1813                 /* don't complain if access was denied */
1814                 if (errno != EPERM && errno != EACCES) {
1815                         DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed:"
1816                                  "%s", strerror(errno)));
1817                 }
1818                 return -1;
1819         }
1820
1821         if(null_timespec(ft->create_time)){
1822                 DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
1823                 return 0;
1824         }
1825
1826         if (!config->winattr) {
1827                 return 0;
1828         }
1829
1830         attrs.winAttrs = 0;
1831         attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1832         attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1833
1834         ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1835                                          GPFS_WINATTR_SET_CREATION_TIME,
1836                                          &attrs);
1837         if(ret == -1 && errno != ENOSYS){
1838                 DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
1839                 return -1;
1840         }
1841         return 0;
1842
1843 }
1844
1845 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1846                        struct files_struct *fsp, enum vfs_fallocate_mode mode,
1847                        off_t offset, off_t len)
1848 {
1849         int ret;
1850         struct gpfs_config_data *config;
1851
1852         SMB_VFS_HANDLE_GET_DATA(handle, config,
1853                                 struct gpfs_config_data,
1854                                 return -1);
1855
1856         if (!config->prealloc) {
1857                 /* you should better not run fallocate() on GPFS at all */
1858                 errno = ENOTSUP;
1859                 return -1;
1860         }
1861
1862         if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1863                 DEBUG(10, ("Unsupported VFS_FALLOCATE_KEEP_SIZE\n"));
1864                 errno = ENOTSUP;
1865                 return -1;
1866         }
1867
1868         ret = gpfswrap_prealloc(fsp->fh->fd, offset, len);
1869
1870         if (ret == -1 && errno != ENOSYS) {
1871                 DEBUG(0, ("GPFS prealloc failed: %s\n", strerror(errno)));
1872         } else if (ret == -1 && errno == ENOSYS) {
1873                 DEBUG(10, ("GPFS prealloc not supported.\n"));
1874         } else {
1875                 DEBUG(10, ("GPFS prealloc succeeded.\n"));
1876         }
1877
1878         return ret;
1879 }
1880
1881 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1882                                 off_t len)
1883 {
1884         int result;
1885         struct gpfs_config_data *config;
1886
1887         SMB_VFS_HANDLE_GET_DATA(handle, config,
1888                                 struct gpfs_config_data,
1889                                 return -1);
1890
1891         if (!config->ftruncate) {
1892                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1893         }
1894
1895         result = gpfswrap_ftruncate(fsp->fh->fd, len);
1896         if ((result == -1) && (errno == ENOSYS)) {
1897                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1898         }
1899         return result;
1900 }
1901
1902 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1903                                 const struct smb_filename *fname,
1904                                 SMB_STRUCT_STAT *sbuf)
1905 {
1906         struct gpfs_winattr attrs;
1907         char *path = NULL;
1908         NTSTATUS status;
1909         struct gpfs_config_data *config;
1910         int ret;
1911
1912         SMB_VFS_HANDLE_GET_DATA(handle, config,
1913                                 struct gpfs_config_data,
1914                                 return -1);
1915
1916         if (!config->winattr) {
1917                 return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
1918         }
1919
1920         status = get_full_smb_filename(talloc_tos(), fname, &path);
1921         if (!NT_STATUS_IS_OK(status)) {
1922                 errno = map_errno_from_nt_status(status);
1923                 return -1;
1924         }
1925
1926         ret = gpfswrap_get_winattrs_path(path, &attrs);
1927         if (ret == -1) {
1928                 TALLOC_FREE(path);
1929                 return false;
1930         }
1931
1932         if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1933                 DEBUG(10, ("%s is offline\n", path));
1934                 TALLOC_FREE(path);
1935                 return true;
1936         }
1937         DEBUG(10, ("%s is online\n", path));
1938         TALLOC_FREE(path);
1939         return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
1940 }
1941
1942 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1943                                struct files_struct *fsp)
1944 {
1945         return vfs_gpfs_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st);
1946 }
1947
1948 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1949                                  files_struct *fsp, const DATA_BLOB *hdr,
1950                                  off_t offset, size_t n)
1951 {
1952         if (SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name, &fsp->fsp_name->st))
1953         {
1954                 errno = ENOSYS;
1955                 return -1;
1956         }
1957         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
1958 }
1959
1960 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
1961                             const char *service, const char *user)
1962 {
1963         struct gpfs_config_data *config;
1964         int ret;
1965
1966         gpfswrap_lib_init(0);
1967
1968         config = talloc_zero(handle->conn, struct gpfs_config_data);
1969         if (!config) {
1970                 DEBUG(0, ("talloc_zero() failed\n"));
1971                 errno = ENOMEM;
1972                 return -1;
1973         }
1974
1975         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
1976         if (ret < 0) {
1977                 TALLOC_FREE(config);
1978                 return ret;
1979         }
1980
1981         config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1982                                         "sharemodes", true);
1983
1984         config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
1985                                         "leases", true);
1986
1987         config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
1988                                    "hsm", false);
1989
1990         config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
1991                                       "syncio", false);
1992
1993         config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
1994                                        "winattr", false);
1995
1996         config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
1997                                          "ftruncate", true);
1998
1999         config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
2000                                                "getrealfilename", true);
2001
2002         config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
2003                                           "dfreequota", false);
2004
2005         config->prealloc = lp_parm_bool(SNUM(handle->conn), "gpfs",
2006                                    "prealloc", true);
2007
2008         config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
2009
2010         config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2011                                         "settimes", true);
2012         config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
2013                                        "recalls", true);
2014
2015         SMB_VFS_HANDLE_SET_DATA(handle, config,
2016                                 NULL, struct gpfs_config_data,
2017                                 return -1);
2018
2019         if (config->leases) {
2020                 /*
2021                  * GPFS lease code is based on kernel oplock code
2022                  * so make sure it is turned on
2023                  */
2024                 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
2025                         DEBUG(5, ("Enabling kernel oplocks for "
2026                                   "gpfs:leases to work\n"));
2027                         lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
2028                                         "true");
2029                 }
2030
2031                 /*
2032                  * as the kernel does not properly support Level II oplocks
2033                  * and GPFS leases code is based on kernel infrastructure, we
2034                  * need to turn off Level II oplocks if gpfs:leases is enabled
2035                  */
2036                 if (lp_level2_oplocks(SNUM(handle->conn))) {
2037                         DEBUG(5, ("gpfs:leases are enabled, disabling "
2038                                   "Level II oplocks\n"));
2039                         lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
2040                                         "false");
2041                 }
2042         }
2043
2044         return 0;
2045 }
2046
2047 static int get_gpfs_fset_id(const char *pathname, int *fset_id)
2048 {
2049         int err, fd, errno_fcntl;
2050
2051         struct {
2052                 gpfsFcntlHeader_t hdr;
2053                 gpfsGetFilesetName_t fsn;
2054         } arg;
2055
2056         arg.hdr.totalLength = sizeof(arg);
2057         arg.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
2058         arg.hdr.fcntlReserved = 0;
2059         arg.fsn.structLen = sizeof(arg.fsn);
2060         arg.fsn.structType = GPFS_FCNTL_GET_FILESETNAME;
2061
2062         fd = open(pathname, O_RDONLY);
2063         if (fd == -1) {
2064                 DEBUG(1, ("Could not open %s: %s\n",
2065                           pathname, strerror(errno)));
2066                 return fd;
2067         }
2068
2069         err = gpfswrap_fcntl(fd, &arg);
2070         errno_fcntl = errno;
2071         close(fd);
2072
2073         if (err) {
2074                 errno = errno_fcntl;
2075                 if (errno != ENOSYS) {
2076                         DEBUG(1, ("GPFS_FCNTL_GET_FILESETNAME for %s failed: "
2077                                   "%s\n", pathname, strerror(errno)));
2078                 }
2079                 return err;
2080         }
2081
2082         err = gpfswrap_getfilesetid(discard_const_p(char, pathname),
2083                                     arg.fsn.buffer, fset_id);
2084         if (err && errno != ENOSYS) {
2085                 DEBUG(1, ("gpfs_getfilesetid for %s failed: %s\n",
2086                           pathname, strerror(errno)));
2087         }
2088         return err;
2089 }
2090
2091 static int get_gpfs_quota(const char *pathname, int type, int id,
2092                           struct gpfs_quotaInfo *qi)
2093 {
2094         int ret;
2095
2096         ZERO_STRUCTP(qi);
2097         ret = gpfswrap_quotactl(discard_const_p(char, pathname),
2098                                 GPFS_QCMD(Q_GETQUOTA, type), id, qi);
2099
2100         if (ret) {
2101                 if (errno == GPFS_E_NO_QUOTA_INST) {
2102                         DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
2103                 } else if (errno != ENOSYS) {
2104                         DEBUG(0, ("Get quota failed, type %d, id, %d, "
2105                                   "errno %d.\n", type, id, errno));
2106                 }
2107
2108                 return ret;
2109         }
2110
2111         DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2112                    type, id, qi->blockUsage, qi->blockHardLimit,
2113                    qi->blockSoftLimit, qi->blockGraceTime));
2114
2115         return ret;
2116 }
2117
2118 static int vfs_gpfs_get_quotas(const char *path, uid_t uid, gid_t gid,
2119                                int *fset_id,
2120                                struct gpfs_quotaInfo *qi_user,
2121                                struct gpfs_quotaInfo *qi_group,
2122                                struct gpfs_quotaInfo *qi_fset)
2123 {
2124         int err;
2125         char *dir_path;
2126         bool b;
2127
2128         /*
2129          * We want to always use the directory to get the fileset id,
2130          * because files might have a share mode. We also do not want
2131          * to get the parent directory when there is already a
2132          * directory to avoid stepping in a different fileset.  The
2133          * path passed here is currently either "." or a filename, so
2134          * this is ok. The proper solution would be having a way to
2135          * query the fileset id without opening the file.
2136          */
2137         b = parent_dirname(talloc_tos(), path, &dir_path, NULL);
2138         if (!b) {
2139                 errno = ENOMEM;
2140                 return -1;
2141         }
2142
2143         DEBUG(10, ("path %s, directory %s\n", path, dir_path));
2144
2145         err = get_gpfs_fset_id(dir_path, fset_id);
2146         if (err) {
2147                 DEBUG(0, ("Get fset id failed path %s, dir %s, errno %d.\n",
2148                           path, dir_path, errno));
2149                 return err;
2150         }
2151
2152         err = get_gpfs_quota(path, GPFS_USRQUOTA, uid, qi_user);
2153         if (err) {
2154                 return err;
2155         }
2156
2157         err = get_gpfs_quota(path, GPFS_GRPQUOTA, gid, qi_group);
2158         if (err) {
2159                 return err;
2160         }
2161
2162         err = get_gpfs_quota(path, GPFS_FILESETQUOTA, *fset_id, qi_fset);
2163         if (err) {
2164                 return err;
2165         }
2166
2167         return 0;
2168 }
2169
2170 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2171                                      uint64_t *dfree, uint64_t *dsize)
2172 {
2173         uint64_t usage, limit;
2174
2175         /*
2176          * The quota reporting is done in units of 1024 byte blocks, but
2177          * sys_fsusage uses units of 512 byte blocks, adjust the block number
2178          * accordingly. Also filter possibly negative usage counts from gpfs.
2179          */
2180         usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2181         limit = (uint64_t)qi.blockHardLimit * 2;
2182
2183         /*
2184          * When the grace time for the exceeded soft block quota has been
2185          * exceeded, the soft block quota becomes an additional hard limit.
2186          */
2187         if (qi.blockSoftLimit &&
2188             qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2189                 /* report disk as full */
2190                 *dfree = 0;
2191                 *dsize = MIN(*dsize, usage);
2192         }
2193
2194         if (!qi.blockHardLimit)
2195                 return;
2196
2197         if (usage >= limit) {
2198                 /* report disk as full */
2199                 *dfree = 0;
2200                 *dsize = MIN(*dsize, usage);
2201
2202         } else {
2203                 /* limit has not been reached, determine "free space" */
2204                 *dfree = MIN(*dfree, limit - usage);
2205                 *dsize = MIN(*dsize, limit);
2206         }
2207 }
2208
2209 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle, const char *path,
2210                                    uint64_t *bsize,
2211                                    uint64_t *dfree, uint64_t *dsize)
2212 {
2213         struct security_unix_token *utok;
2214         struct gpfs_quotaInfo qi_user, qi_group, qi_fset;
2215         struct gpfs_config_data *config;
2216         int err, fset_id;
2217         time_t cur_time;
2218
2219         SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2220                                 return (uint64_t)-1);
2221         if (!config->dfreequota) {
2222                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2223                                               bsize, dfree, dsize);
2224         }
2225
2226         err = sys_fsusage(path, dfree, dsize);
2227         if (err) {
2228                 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2229                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2230                                               bsize, dfree, dsize);
2231         }
2232
2233         /* sys_fsusage returns units of 512 bytes */
2234         *bsize = 512;
2235
2236         DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2237                    (unsigned long long)*dfree, (unsigned long long)*dsize));
2238
2239         utok = handle->conn->session_info->unix_token;
2240         err = vfs_gpfs_get_quotas(path, utok->uid, utok->gid, &fset_id,
2241                                   &qi_user, &qi_group, &qi_fset);
2242         if (err) {
2243                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2244                                               bsize, dfree, dsize);
2245         }
2246
2247         cur_time = time(NULL);
2248
2249         /* Adjust free space and size according to quota limits. */
2250         vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2251         vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2252
2253         /* Id 0 indicates the default quota, not an actual quota */
2254         if (fset_id != 0) {
2255                 vfs_gpfs_disk_free_quota(qi_fset, cur_time, dfree, dsize);
2256         }
2257
2258         disk_norm(bsize, dfree, dsize);
2259         return *dfree;
2260 }
2261
2262 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2263                                       enum timestamp_set_resolution *p_ts_res)
2264 {
2265         struct gpfs_config_data *config;
2266         uint32_t next;
2267
2268         next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2269
2270         SMB_VFS_HANDLE_GET_DATA(handle, config,
2271                                 struct gpfs_config_data,
2272                                 return next);
2273
2274         if (config->hsm) {
2275                 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2276         }
2277         return next;
2278 }
2279
2280 static int vfs_gpfs_open(struct vfs_handle_struct *handle,
2281                          struct smb_filename *smb_fname, files_struct *fsp,
2282                          int flags, mode_t mode)
2283 {
2284         struct gpfs_config_data *config;
2285
2286         SMB_VFS_HANDLE_GET_DATA(handle, config,
2287                                 struct gpfs_config_data,
2288                                 return -1);
2289
2290         if (config->hsm && !config->recalls) {
2291                 if (SMB_VFS_IS_OFFLINE(handle->conn, smb_fname, &smb_fname->st))
2292                 {
2293                         DEBUG(10, ("Refusing access to offline file %s\n",
2294                                   fsp_str_dbg(fsp)));
2295                         errno = EACCES;
2296                         return -1;
2297                 }
2298         }
2299
2300         if (config->syncio) {
2301                 flags |= O_SYNC;
2302         }
2303         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
2304 }
2305
2306 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2307                               void *data, size_t n, off_t offset)
2308 {
2309         ssize_t ret;
2310         bool was_offline;
2311
2312         was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2313                                          &fsp->fsp_name->st);
2314
2315         ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2316
2317         if ((ret != -1) && was_offline) {
2318                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2319                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2320                              fsp->fsp_name->base_name);
2321         }
2322
2323         return ret;
2324 }
2325
2326 struct vfs_gpfs_pread_state {
2327         struct files_struct *fsp;
2328         ssize_t ret;
2329         int err;
2330         bool was_offline;
2331 };
2332
2333 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2334
2335 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2336                                               TALLOC_CTX *mem_ctx,
2337                                               struct tevent_context *ev,
2338                                               struct files_struct *fsp,
2339                                               void *data, size_t n,
2340                                               off_t offset)
2341 {
2342         struct tevent_req *req, *subreq;
2343         struct vfs_gpfs_pread_state *state;
2344
2345         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2346         if (req == NULL) {
2347                 return NULL;
2348         }
2349         state->was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2350                                                 &fsp->fsp_name->st);
2351         state->fsp = fsp;
2352         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2353                                          n, offset);
2354         if (tevent_req_nomem(subreq, req)) {
2355                 return tevent_req_post(req, ev);
2356         }
2357         tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2358         return req;
2359 }
2360
2361 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2362 {
2363         struct tevent_req *req = tevent_req_callback_data(
2364                 subreq, struct tevent_req);
2365         struct vfs_gpfs_pread_state *state = tevent_req_data(
2366                 req, struct vfs_gpfs_pread_state);
2367
2368         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->err);
2369         TALLOC_FREE(subreq);
2370         tevent_req_done(req);
2371 }
2372
2373 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req, int *err)
2374 {
2375         struct vfs_gpfs_pread_state *state = tevent_req_data(
2376                 req, struct vfs_gpfs_pread_state);
2377         struct files_struct *fsp = state->fsp;
2378
2379         if (tevent_req_is_unix_error(req, err)) {
2380                 return -1;
2381         }
2382         *err = state->err;
2383
2384         if ((state->ret != -1) && state->was_offline) {
2385                 DEBUG(10, ("sending notify\n"));
2386                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2387                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2388                              fsp->fsp_name->base_name);
2389         }
2390
2391         return state->ret;
2392 }
2393
2394 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2395                                const void *data, size_t n, off_t offset)
2396 {
2397         ssize_t ret;
2398         bool was_offline;
2399
2400         was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2401                                          &fsp->fsp_name->st);
2402
2403         ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2404
2405         if ((ret != -1) && was_offline) {
2406                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2407                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2408                              fsp->fsp_name->base_name);
2409         }
2410
2411         return ret;
2412 }
2413
2414 struct vfs_gpfs_pwrite_state {
2415         struct files_struct *fsp;
2416         ssize_t ret;
2417         int err;
2418         bool was_offline;
2419 };
2420
2421 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2422
2423 static struct tevent_req *vfs_gpfs_pwrite_send(
2424         struct vfs_handle_struct *handle,
2425         TALLOC_CTX *mem_ctx,
2426         struct tevent_context *ev,
2427         struct files_struct *fsp,
2428         const void *data, size_t n,
2429         off_t offset)
2430 {
2431         struct tevent_req *req, *subreq;
2432         struct vfs_gpfs_pwrite_state *state;
2433
2434         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2435         if (req == NULL) {
2436                 return NULL;
2437         }
2438         state->was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2439                                                 &fsp->fsp_name->st);
2440         state->fsp = fsp;
2441         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2442                                          n, offset);
2443         if (tevent_req_nomem(subreq, req)) {
2444                 return tevent_req_post(req, ev);
2445         }
2446         tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2447         return req;
2448 }
2449
2450 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2451 {
2452         struct tevent_req *req = tevent_req_callback_data(
2453                 subreq, struct tevent_req);
2454         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2455                 req, struct vfs_gpfs_pwrite_state);
2456
2457         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err);
2458         TALLOC_FREE(subreq);
2459         tevent_req_done(req);
2460 }
2461
2462 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req, int *err)
2463 {
2464         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2465                 req, struct vfs_gpfs_pwrite_state);
2466         struct files_struct *fsp = state->fsp;
2467
2468         if (tevent_req_is_unix_error(req, err)) {
2469                 return -1;
2470         }
2471         *err = state->err;
2472
2473         if ((state->ret != -1) && state->was_offline) {
2474                 DEBUG(10, ("sending notify\n"));
2475                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2476                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2477                              fsp->fsp_name->base_name);
2478         }
2479
2480         return state->ret;
2481 }
2482
2483
2484 static struct vfs_fn_pointers vfs_gpfs_fns = {
2485         .connect_fn = vfs_gpfs_connect,
2486         .disk_free_fn = vfs_gpfs_disk_free,
2487         .fs_capabilities_fn = vfs_gpfs_capabilities,
2488         .kernel_flock_fn = vfs_gpfs_kernel_flock,
2489         .linux_setlease_fn = vfs_gpfs_setlease,
2490         .get_real_filename_fn = vfs_gpfs_get_real_filename,
2491         .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2492         .get_nt_acl_fn = gpfsacl_get_nt_acl,
2493         .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2494         .sys_acl_get_file_fn = gpfsacl_sys_acl_get_file,
2495         .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2496         .sys_acl_blob_get_file_fn = gpfsacl_sys_acl_blob_get_file,
2497         .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2498         .sys_acl_set_file_fn = gpfsacl_sys_acl_set_file,
2499         .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2500         .sys_acl_delete_def_file_fn = gpfsacl_sys_acl_delete_def_file,
2501         .chmod_fn = vfs_gpfs_chmod,
2502         .fchmod_fn = vfs_gpfs_fchmod,
2503         .close_fn = vfs_gpfs_close,
2504         .setxattr_fn = gpfs_set_xattr,
2505         .getxattr_fn = gpfs_get_xattr,
2506         .stat_fn = vfs_gpfs_stat,
2507         .fstat_fn = vfs_gpfs_fstat,
2508         .lstat_fn = vfs_gpfs_lstat,
2509         .ntimes_fn = vfs_gpfs_ntimes,
2510         .is_offline_fn = vfs_gpfs_is_offline,
2511         .aio_force_fn = vfs_gpfs_aio_force,
2512         .sendfile_fn = vfs_gpfs_sendfile,
2513         .fallocate_fn = vfs_gpfs_fallocate,
2514         .open_fn = vfs_gpfs_open,
2515         .pread_fn = vfs_gpfs_pread,
2516         .pread_send_fn = vfs_gpfs_pread_send,
2517         .pread_recv_fn = vfs_gpfs_pread_recv,
2518         .pwrite_fn = vfs_gpfs_pwrite,
2519         .pwrite_send_fn = vfs_gpfs_pwrite_send,
2520         .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2521         .ftruncate_fn = vfs_gpfs_ftruncate
2522 };
2523
2524 NTSTATUS vfs_gpfs_init(void);
2525 NTSTATUS vfs_gpfs_init(void)
2526 {
2527         int ret;
2528
2529         ret = gpfswrap_init();
2530         if (ret != 0) {
2531                 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2532         }
2533
2534         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2535                                 &vfs_gpfs_fns);
2536 }