source3/modules/vfs_gpfs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap gpfs calls in vfs functions.
   4
   5    Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
   6
   7    Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
   8                             and Gomati Mohanan <gomati.mohanan@in.ibm.com>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "smbd/smbd.h"
  26 #include "librpc/gen_ndr/ndr_xattr.h"
  27 #include "include/smbprofile.h"
  28 #include "modules/non_posix_acls.h"
  29 #include "libcli/security/security.h"
  30
  31 #undef DBGC_CLASS
  32 #define DBGC_CLASS DBGC_VFS
  33
  34 #include "nfs4_acls.h"
  35 #include "vfs_gpfs.h"
  36 #include "system/filesys.h"
  37 #include "auth.h"
  38 #include "lib/util/tevent_unix.h"
  39
  40 #ifndef GPFS_GETACL_NATIVE
  41 #define GPFS_GETACL_NATIVE 0x00000004
  42 #endif
  43
  44 struct gpfs_config_data {
  45         bool sharemodes;
  46         bool leases;
  47         bool hsm;
  48         bool syncio;
  49         bool winattr;
  50         bool ftruncate;
  51         bool getrealfilename;
  52         bool dfreequota;
  53         bool prealloc;
  54         bool acl;
  55         bool settimes;
  56         bool recalls;
  57 };
  58
  59 static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
  60 {
  61         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
  62                 /* gacl->v4Level1.acl_flags requires gpfs 3.5 */
  63                 return *(unsigned int *)&gacl->ace_v4;
  64         }
  65         return 0;
  66 }
  67
  68 static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
  69 {
  70         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
  71                 /* &gacl->v4Level1.ace_v4[i] requires gpfs 3.5 */
  72                 char *ptr = (char *)&gacl->ace_v4[i] + sizeof(unsigned int);
  73                 return (gpfs_ace_v4_t *)ptr;
  74         }
  75         return &gacl->ace_v4[i];
  76 }
  77
  78 static bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
  79                                uint32 share_access)
  80 {
  81         unsigned int allow = GPFS_SHARE_NONE;
  82         unsigned int deny = GPFS_DENY_NONE;
  83         int result;
  84
  85         if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
  86                 /* No real file, don't disturb */
  87                 return True;
  88         }
  89
  90         allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
  91                                  DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
  92         allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
  93                 GPFS_SHARE_READ : 0;
  94
  95         if (allow == GPFS_SHARE_NONE) {
  96                 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
  97         }
  98         else {
  99                 deny |= (share_access & FILE_SHARE_WRITE) ?
 100                         0 : GPFS_DENY_WRITE;
 101                 deny |= (share_access & (FILE_SHARE_READ)) ?
 102                         0 : GPFS_DENY_READ;
 103         }
 104         DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
 105                    access_mask, allow, share_access, deny));
 106
 107         result = gpfswrap_set_share(fsp->fh->fd, allow, deny);
 108         if (result != 0) {
 109                 if (errno == ENOSYS) {
 110                         DEBUG(5, ("VFS module vfs_gpfs loaded, but gpfs "
 111                                   "set_share function support not available. "
 112                                   "Allowing access\n"));
 113                         return True;
 114                 } else {
 115                         DEBUG(10, ("gpfs_set_share failed: %s\n",
 116                                    strerror(errno)));
 117                 }
 118         }
 119
 120         return (result == 0);
 121 }
 122
 123 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
 124                                  uint32 share_mode, uint32 access_mask)
 125 {
 126
 127         struct gpfs_config_data *config;
 128         int ret = 0;
 129
 130         START_PROFILE(syscall_kernel_flock);
 131
 132         SMB_VFS_HANDLE_GET_DATA(handle, config,
 133                                 struct gpfs_config_data,
 134                                 return -1);
 135
 136         if(!config->sharemodes) {
 137                 return 0;
 138         }
 139
 140         kernel_flock(fsp->fh->fd, share_mode, access_mask);
 141
 142         if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) {
 143                 ret = -1;
 144         }
 145
 146         END_PROFILE(syscall_kernel_flock);
 147
 148         return ret;
 149 }
 150
 151 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
 152 {
 153
 154         struct gpfs_config_data *config;
 155
 156         SMB_VFS_HANDLE_GET_DATA(handle, config,
 157                                 struct gpfs_config_data,
 158                                 return -1);
 159
 160         if (config->sharemodes && (fsp->fh != NULL) && (fsp->fh->fd != -1)) {
 161                 set_gpfs_sharemode(fsp, 0, 0);
 162         }
 163
 164         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 165 }
 166
 167 static int set_gpfs_lease(int fd, int leasetype)
 168 {
 169         int gpfs_type = GPFS_LEASE_NONE;
 170
 171         if (leasetype == F_RDLCK) {
 172                 gpfs_type = GPFS_LEASE_READ;
 173         }
 174         if (leasetype == F_WRLCK) {
 175                 gpfs_type = GPFS_LEASE_WRITE;
 176         }
 177
 178         /* we unconditionally set CAP_LEASE, rather than looking for
 179            -1/EACCES as there is a bug in some versions of
 180            libgpfs_gpl.so which results in a leaked fd on /dev/ss0
 181            each time we try this with the wrong capabilities set
 182         */
 183         linux_set_lease_capability();
 184         return gpfswrap_set_lease(fd, gpfs_type);
 185 }
 186
 187 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
 188                              int leasetype)
 189 {
 190         struct gpfs_config_data *config;
 191         int ret=0;
 192
 193         START_PROFILE(syscall_linux_setlease);
 194
 195         SMB_VFS_HANDLE_GET_DATA(handle, config,
 196                                 struct gpfs_config_data,
 197                                 return -1);
 198
 199         if (linux_set_lease_sighandler(fsp->fh->fd) == -1)
 200                 return -1;
 201
 202         if (config->leases) {
 203                 /*
 204                  * Ensure the lease owner is root to allow
 205                  * correct delivery of lease-break signals.
 206                  */
 207                 become_root();
 208                 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
 209                 unbecome_root();
 210         }
 211
 212         END_PROFILE(syscall_linux_setlease);
 213
 214         return ret;
 215 }
 216
 217 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
 218                                       const char *path,
 219                                       const char *name,
 220                                       TALLOC_CTX *mem_ctx,
 221                                       char **found_name)
 222 {
 223         int result;
 224         char *full_path;
 225         char real_pathname[PATH_MAX+1];
 226         int buflen;
 227         bool mangled;
 228         struct gpfs_config_data *config;
 229
 230         SMB_VFS_HANDLE_GET_DATA(handle, config,
 231                                 struct gpfs_config_data,
 232                                 return -1);
 233
 234         if (!config->getrealfilename) {
 235                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 236                                                       mem_ctx, found_name);
 237         }
 238
 239         mangled = mangle_is_mangled(name, handle->conn->params);
 240         if (mangled) {
 241                 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
 242                                                       mem_ctx, found_name);
 243         }
 244
 245         full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
 246         if (full_path == NULL) {
 247                 errno = ENOMEM;
 248                 return -1;
 249         }
 250
 251         buflen = sizeof(real_pathname) - 1;
 252
 253         result = gpfswrap_get_realfilename_path(full_path, real_pathname,
 254                                                 &buflen);
 255
 256         TALLOC_FREE(full_path);
 257
 258         if ((result == -1) && (errno == ENOSYS)) {
 259                 return SMB_VFS_NEXT_GET_REAL_FILENAME(
 260                         handle, path, name, mem_ctx, found_name);
 261         }
 262
 263         if (result == -1) {
 264                 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
 265                            strerror(errno)));
 266                 return -1;
 267         }
 268
 269         /*
 270          * GPFS does not necessarily null-terminate the returned path
 271          * but instead returns the buffer length in buflen.
 272          */
 273
 274         if (buflen < sizeof(real_pathname)) {
 275                 real_pathname[buflen] = '\0';
 276         } else {
 277                 real_pathname[sizeof(real_pathname)-1] = '\0';
 278         }
 279
 280         DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
 281                    path, name, real_pathname));
 282
 283         name = strrchr_m(real_pathname, '/');
 284         if (name == NULL) {
 285                 errno = ENOENT;
 286                 return -1;
 287         }
 288
 289         *found_name = talloc_strdup(mem_ctx, name+1);
 290         if (*found_name == NULL) {
 291                 errno = ENOMEM;
 292                 return -1;
 293         }
 294
 295         return 0;
 296 }
 297
 298 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
 299 {
 300         unsigned int gpfs_aclflags = 0;
 301         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 302                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 303                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 304                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 305         gpfs_aclflags = control << 8;
 306         if (!(control & SEC_DESC_DACL_PRESENT))
 307                 gpfs_aclflags |= 0x00800000; /* ACL4_FLAG_NULL_DACL; */
 308         if (!(control & SEC_DESC_SACL_PRESENT))
 309                 gpfs_aclflags |= 0x01000000; /* ACL4_FLAG_NULL_SACL; */
 310         gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS*/
 311         /* gacl->v4Level1.acl_flags requires gpfs 3.5 */
 312         *(unsigned int *)&gacl->ace_v4 = gpfs_aclflags;
 313 }
 314
 315 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
 316 {
 317         uint16_t control = gpfs_aclflags >> 8;
 318         control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
 319                 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
 320                 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
 321                 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
 322         control |= SEC_DESC_SELF_RELATIVE;
 323         return control;
 324 }
 325
 326 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
 327 {
 328         gpfs_aclCount_t i;
 329         if (gacl==NULL)
 330         {
 331                 DEBUG(0, ("gpfs acl is NULL\n"));
 332                 return;
 333         }
 334
 335         DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
 336                       "control: %x\n",
 337                       gacl->acl_len, gacl->acl_level, gacl->acl_version,
 338                       gacl->acl_nace, gpfs_acl_flags(gacl)));
 339
 340         for(i=0; i<gacl->acl_nace; i++)
 341         {
 342                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 343                 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
 344                               "iflags:0x%x, who:%u\n",
 345                               i, gace->aceType, gace->aceFlags, gace->aceMask,
 346                               gace->aceIFlags, gace->aceWho));
 347         }
 348 }
 349
 350 /*
 351  * get the ACL from GPFS, allocated on the specified mem_ctx
 352  * internally retries when initial buffer was too small
 353  *
 354  * caller needs to cast result to either
 355  * raw = yes: struct gpfs_opaque_acl
 356  * raw = no: struct gpfs_acl
 357  *
 358  */
 359 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
 360                          const char *fname,
 361                          const bool raw,
 362                          const gpfs_aclType_t type)
 363 {
 364
 365         void *aclbuf;
 366         size_t size = 512;
 367         int ret, flags;
 368         unsigned int *len;
 369         size_t struct_size;
 370
 371 again:
 372
 373         aclbuf = talloc_zero_size(mem_ctx, size);
 374         if (aclbuf == NULL) {
 375                 errno = ENOMEM;
 376                 return NULL;
 377         }
 378
 379         if (raw) {
 380                 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
 381                 buf->acl_type = type;
 382                 flags = GPFS_GETACL_NATIVE;
 383                 len = (unsigned int *) &(buf->acl_buffer_len);
 384                 struct_size = sizeof(struct gpfs_opaque_acl);
 385         } else {
 386                 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
 387                 buf->acl_type = type;
 388                 buf->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */
 389                 flags = GPFS_GETACL_STRUCT;
 390                 len = &(buf->acl_len);
 391                 /* reserve space for control flags in gpfs 3.5 and beyond */
 392                 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
 393         }
 394
 395         /* set the length of the buffer as input value */
 396         *len = size;
 397
 398         errno = 0;
 399         ret = gpfswrap_getacl(discard_const_p(char, fname), flags, aclbuf);
 400         if ((ret != 0) && (errno == ENOSPC)) {
 401                 /*
 402                  * get the size needed to accommodate the complete buffer
 403                  *
 404                  * the value returned only applies to the ACL blob in the
 405                  * struct so make sure to also have headroom for the first
 406                  * struct members by adding room for the complete struct
 407                  * (might be a few bytes too much then)
 408                  */
 409                 size = *len + struct_size;
 410                 talloc_free(aclbuf);
 411                 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
 412                 goto again;
 413         }
 414
 415         if (ret != 0) {
 416                 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
 417                           strerror(errno)));
 418                 talloc_free(aclbuf);
 419                 return NULL;
 420         }
 421
 422         return aclbuf;
 423 }
 424
 425 /* Tries to get nfs4 acls and returns SMB ACL allocated.
 426  * On failure returns 1 if it got non-NFSv4 ACL to prompt
 427  * retry with POSIX ACL checks.
 428  * On failure returns -1 if there is system (GPFS) error, check errno.
 429  * Returns 0 on success
 430  */
 431 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx, const char *fname, SMB4ACL_T **ppacl)
 432 {
 433         gpfs_aclCount_t i;
 434         struct gpfs_acl *gacl = NULL;
 435         DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
 436
 437         /* Get the ACL */
 438         gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
 439                                                   false, 0);
 440         if (gacl == NULL) {
 441                 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
 442                            fname, strerror(errno)));
 443                 return -1;
 444         }
 445
 446         if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
 447                 DEBUG(10, ("Got non-nfsv4 acl\n"));
 448                 /* Retry with POSIX ACLs check */
 449                 talloc_free(gacl);
 450                 return 1;
 451         }
 452
 453         *ppacl = smb_create_smb4acl(mem_ctx);
 454
 455         if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */
 456                 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
 457                 smbacl4_set_controlflags(*ppacl, control);
 458         }
 459
 460         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
 461                    gacl->acl_len, gacl->acl_level, gacl->acl_version,
 462                    gacl->acl_nace, gpfs_acl_flags(gacl)));
 463
 464         for (i=0; i<gacl->acl_nace; i++) {
 465                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
 466                 SMB_ACE4PROP_T smbace;
 467                 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
 468                            "who: %d\n", gace->aceType, gace->aceIFlags,
 469                            gace->aceFlags, gace->aceMask, gace->aceWho));
 470
 471                 ZERO_STRUCT(smbace);
 472                 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
 473                         smbace.flags |= SMB_ACE4_ID_SPECIAL;
 474                         switch (gace->aceWho) {
 475                         case ACE4_SPECIAL_OWNER:
 476                                 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
 477                                 break;
 478                         case ACE4_SPECIAL_GROUP:
 479                                 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
 480                                 break;
 481                         case ACE4_SPECIAL_EVERYONE:
 482                                 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
 483                                 break;
 484                         default:
 485                                 DEBUG(8, ("invalid special gpfs id %d "
 486                                           "ignored\n", gace->aceWho));
 487                                 continue; /* don't add it */
 488                         }
 489                 } else {
 490                         if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
 491                                 smbace.who.gid = gace->aceWho;
 492                         else
 493                                 smbace.who.uid = gace->aceWho;
 494                 }
 495
 496                 /* remove redundant deny entries */
 497                 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
 498                         struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
 499                         if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
 500                             prev->aceFlags == gace->aceFlags &&
 501                             prev->aceIFlags == gace->aceIFlags &&
 502                             (gace->aceMask & prev->aceMask) == 0 &&
 503                             gace->aceWho == prev->aceWho) {
 504                                 /* it's redundant - skip it */
 505                                 continue;
 506                         }
 507                 }
 508
 509                 smbace.aceType = gace->aceType;
 510                 smbace.aceFlags = gace->aceFlags;
 511                 smbace.aceMask = gace->aceMask;
 512                 smb_add_ace4(*ppacl, &smbace);
 513         }
 514
 515         talloc_free(gacl);
 516
 517         return 0;
 518 }
 519
 520 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
 521         files_struct *fsp, uint32 security_info,
 522         TALLOC_CTX *mem_ctx,
 523         struct security_descriptor **ppdesc)
 524 {
 525         SMB4ACL_T *pacl = NULL;
 526         int     result;
 527         struct gpfs_config_data *config;
 528         TALLOC_CTX *frame = talloc_stackframe();
 529         NTSTATUS status;
 530
 531         *ppdesc = NULL;
 532
 533         SMB_VFS_HANDLE_GET_DATA(handle, config,
 534                                 struct gpfs_config_data,
 535                                 return NT_STATUS_INTERNAL_ERROR);
 536
 537         if (!config->acl) {
 538                 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
 539                                                   mem_ctx, ppdesc);
 540                 TALLOC_FREE(frame);
 541                 return status;
 542         }
 543
 544         result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
 545
 546         if (result == 0) {
 547                 status = smb_fget_nt_acl_nfs4(fsp, security_info, mem_ctx,
 548                                               ppdesc, pacl);
 549                 TALLOC_FREE(frame);
 550                 return status;
 551         }
 552
 553         if (result > 0) {
 554                 DEBUG(10, ("retrying with posix acl...\n"));
 555                 status = posix_fget_nt_acl(fsp, security_info,
 556                                            mem_ctx, ppdesc);
 557                 TALLOC_FREE(frame);
 558                 return status;
 559         }
 560
 561         TALLOC_FREE(frame);
 562
 563         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 564         return map_nt_error_from_unix(errno);
 565 }
 566
 567 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
 568         const char *name,
 569         uint32 security_info,
 570         TALLOC_CTX *mem_ctx, struct security_descriptor **ppdesc)
 571 {
 572         SMB4ACL_T *pacl = NULL;
 573         int     result;
 574         struct gpfs_config_data *config;
 575         TALLOC_CTX *frame = talloc_stackframe();
 576         NTSTATUS status;
 577
 578         *ppdesc = NULL;
 579
 580         SMB_VFS_HANDLE_GET_DATA(handle, config,
 581                                 struct gpfs_config_data,
 582                                 return NT_STATUS_INTERNAL_ERROR);
 583
 584         if (!config->acl) {
 585                 status = SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info,
 586                                                  mem_ctx, ppdesc);
 587                 TALLOC_FREE(frame);
 588                 return status;
 589         }
 590
 591         result = gpfs_get_nfs4_acl(frame, name, &pacl);
 592
 593         if (result == 0) {
 594                 status = smb_get_nt_acl_nfs4(handle->conn, name, security_info,
 595                                            mem_ctx, ppdesc, pacl);
 596                 TALLOC_FREE(frame);
 597                 return status;
 598         }
 599
 600         if (result > 0) {
 601                 DEBUG(10, ("retrying with posix acl...\n"));
 602                 status =  posix_get_nt_acl(handle->conn, name, security_info,
 603                                            mem_ctx, ppdesc);
 604                 TALLOC_FREE(frame);
 605                 return status;
 606         }
 607
 608         /* GPFS ACL was not read, something wrong happened, error code is set in errno */
 609         TALLOC_FREE(frame);
 610         return map_nt_error_from_unix(errno);
 611 }
 612
 613 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
 614                                                 files_struct *fsp,
 615                                                 SMB4ACL_T *smbacl,
 616                                                 bool controlflags)
 617 {
 618         struct gpfs_acl *gacl;
 619         gpfs_aclLen_t gacl_len;
 620         SMB4ACE_T *smbace;
 621
 622         gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
 623                 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
 624
 625         gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
 626         if (gacl == NULL) {
 627                 DEBUG(0, ("talloc failed\n"));
 628                 errno = ENOMEM;
 629                 return NULL;
 630         }
 631
 632         gacl->acl_level = 0; /* GPFS_ACL_LEVEL_BASE */
 633         gacl->acl_version = GPFS_ACL_VERSION_NFS4;
 634         gacl->acl_type = GPFS_ACL_TYPE_NFS4;
 635         gacl->acl_nace = 0; /* change later... */
 636
 637         if (controlflags) {
 638                 gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */
 639                 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
 640         }
 641
 642         for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
 643                 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
 644                 SMB_ACE4PROP_T  *aceprop = smb_get_ace4(smbace);
 645
 646                 gace->aceType = aceprop->aceType;
 647                 gace->aceFlags = aceprop->aceFlags;
 648                 gace->aceMask = aceprop->aceMask;
 649
 650                 /*
 651                  * GPFS can't distinguish between WRITE and APPEND on
 652                  * files, so one being set without the other is an
 653                  * error. Sorry for the many ()'s :-)
 654                  */
 655
 656                 if (!fsp->is_directory
 657                     &&
 658                     ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
 659                       && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
 660                      ||
 661                      (((gace->aceMask & ACE4_MASK_WRITE) != 0)
 662                       && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
 663                     &&
 664                     lp_parm_bool(fsp->conn->params->service, "gpfs",
 665                                  "merge_writeappend", True)) {
 666                         DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
 667                                   "WRITE^APPEND, setting WRITE|APPEND\n",
 668                                   fsp_str_dbg(fsp)));
 669                         gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
 670                 }
 671
 672                 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
 673
 674                 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
 675                 {
 676                         switch(aceprop->who.special_id)
 677                         {
 678                         case SMB_ACE4_WHO_EVERYONE:
 679                                 gace->aceWho = ACE4_SPECIAL_EVERYONE;
 680                                 break;
 681                         case SMB_ACE4_WHO_OWNER:
 682                                 gace->aceWho = ACE4_SPECIAL_OWNER;
 683                                 break;
 684                         case SMB_ACE4_WHO_GROUP:
 685                                 gace->aceWho = ACE4_SPECIAL_GROUP;
 686                                 break;
 687                         default:
 688                                 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
 689                                 continue; /* don't add it !!! */
 690                         }
 691                 } else {
 692                         /* just only for the type safety... */
 693                         if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
 694                                 gace->aceWho = aceprop->who.gid;
 695                         else
 696                                 gace->aceWho = aceprop->who.uid;
 697                 }
 698
 699                 gacl->acl_nace++;
 700         }
 701         gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
 702                 - (char *)gacl;
 703         return gacl;
 704 }
 705
 706 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
 707                                    files_struct *fsp,
 708                                    SMB4ACL_T *smbacl)
 709 {
 710         int ret;
 711         struct gpfs_acl *gacl;
 712         TALLOC_CTX *mem_ctx = talloc_tos();
 713
 714         gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
 715         if (gacl == NULL) { /* out of memory */
 716                 return False;
 717         }
 718         ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 719                               GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
 720
 721         if ((ret != 0) && (errno == EINVAL)) {
 722                 DEBUG(10, ("Retry without nfs41 control flags\n"));
 723                 talloc_free(gacl);
 724                 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
 725                 if (gacl == NULL) { /* out of memory */
 726                         return False;
 727                 }
 728                 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
 729                                       GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
 730                                       gacl);
 731         }
 732
 733         if (ret != 0) {
 734                 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
 735                 gpfs_dumpacl(8, gacl);
 736                 return False;
 737         }
 738
 739         DEBUG(10, ("gpfs_putacl succeeded\n"));
 740         return True;
 741 }
 742
 743 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
 744 {
 745         struct gpfs_acl *acl;
 746         NTSTATUS result = NT_STATUS_ACCESS_DENIED;
 747
 748         acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
 749                                                  fsp->fsp_name->base_name,
 750                                                  false, 0);
 751         if (acl == NULL) {
 752                 return map_nt_error_from_unix(errno);
 753         }
 754
 755         if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
 756                 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
 757                                  "refuse_dacl_protected", false)
 758                     && (psd->type&SEC_DESC_DACL_PROTECTED)) {
 759                         DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
 760                         talloc_free(acl);
 761                         return NT_STATUS_NOT_SUPPORTED;
 762                 }
 763
 764                 result = smb_set_nt_acl_nfs4(handle,
 765                         fsp, security_info_sent, psd,
 766                         gpfsacl_process_smbacl);
 767         } else { /* assume POSIX ACL - by default... */
 768                 result = set_nt_acl(fsp, security_info_sent, psd);
 769         }
 770
 771         talloc_free(acl);
 772         return result;
 773 }
 774
 775 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
 776 {
 777         struct gpfs_config_data *config;
 778
 779         SMB_VFS_HANDLE_GET_DATA(handle, config,
 780                                 struct gpfs_config_data,
 781                                 return NT_STATUS_INTERNAL_ERROR);
 782
 783         if (!config->acl) {
 784                 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 785         }
 786
 787         return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
 788 }
 789
 790 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
 791 {
 792         SMB_ACL_T result;
 793         gpfs_aclCount_t i;
 794
 795         result = sys_acl_init(mem_ctx);
 796         if (result == NULL) {
 797                 errno = ENOMEM;
 798                 return NULL;
 799         }
 800
 801         result->count = pacl->acl_nace;
 802         result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
 803                                      result->count);
 804         if (result->acl == NULL) {
 805                 TALLOC_FREE(result);
 806                 errno = ENOMEM;
 807                 return NULL;
 808         }
 809
 810         for (i=0; i<pacl->acl_nace; i++) {
 811                 struct smb_acl_entry *ace = &result->acl[i];
 812                 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
 813
 814                 DEBUG(10, ("Converting type %d id %lu perm %x\n",
 815                            (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
 816                            (int)g_ace->ace_perm));
 817
 818                 switch (g_ace->ace_type) {
 819                 case GPFS_ACL_USER:
 820                         ace->a_type = SMB_ACL_USER;
 821                         ace->info.user.uid = (uid_t)g_ace->ace_who;
 822                         break;
 823                 case GPFS_ACL_USER_OBJ:
 824                         ace->a_type = SMB_ACL_USER_OBJ;
 825                         break;
 826                 case GPFS_ACL_GROUP:
 827                         ace->a_type = SMB_ACL_GROUP;
 828                         ace->info.group.gid = (gid_t)g_ace->ace_who;
 829                         break;
 830                 case GPFS_ACL_GROUP_OBJ:
 831                         ace->a_type = SMB_ACL_GROUP_OBJ;
 832                         break;
 833                 case GPFS_ACL_OTHER:
 834                         ace->a_type = SMB_ACL_OTHER;
 835                         break;
 836                 case GPFS_ACL_MASK:
 837                         ace->a_type = SMB_ACL_MASK;
 838                         break;
 839                 default:
 840                         DEBUG(10, ("Got invalid ace_type: %d\n",
 841                                    g_ace->ace_type));
 842                         TALLOC_FREE(result);
 843                         errno = EINVAL;
 844                         return NULL;
 845                 }
 846
 847                 ace->a_perm = 0;
 848                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
 849                         SMB_ACL_READ : 0;
 850                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
 851                         SMB_ACL_WRITE : 0;
 852                 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
 853                         SMB_ACL_EXECUTE : 0;
 854
 855                 DEBUGADD(10, ("Converted to %d perm %x\n",
 856                               ace->a_type, ace->a_perm));
 857         }
 858
 859         return result;
 860 }
 861
 862 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type,
 863                                        TALLOC_CTX *mem_ctx)
 864 {
 865         struct gpfs_acl *pacl;
 866         SMB_ACL_T result = NULL;
 867
 868         pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
 869
 870         if (pacl == NULL) {
 871                 DEBUG(10, ("vfs_gpfs_getacl failed for %s with %s\n",
 872                            path, strerror(errno)));
 873                 if (errno == 0) {
 874                         errno = EINVAL;
 875                 }
 876                 goto done;
 877         }
 878
 879         if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
 880                 DEBUG(10, ("Got acl version %d, expected %d\n",
 881                            pacl->acl_version, GPFS_ACL_VERSION_POSIX));
 882                 errno = EINVAL;
 883                 goto done;
 884         }
 885
 886         DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
 887                    pacl->acl_len, pacl->acl_level, pacl->acl_version,
 888                    pacl->acl_nace));
 889
 890         result = gpfs2smb_acl(pacl, mem_ctx);
 891         if (result != NULL) {
 892                 errno = 0;
 893         }
 894
 895  done:
 896
 897         if (pacl != NULL) {
 898                 talloc_free(pacl);
 899         }
 900         if (errno != 0) {
 901                 TALLOC_FREE(result);
 902         }
 903         return result;
 904 }
 905
 906 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
 907                                           const char *path_p,
 908                                           SMB_ACL_TYPE_T type,
 909                                           TALLOC_CTX *mem_ctx)
 910 {
 911         gpfs_aclType_t gpfs_type;
 912         struct gpfs_config_data *config;
 913
 914         SMB_VFS_HANDLE_GET_DATA(handle, config,
 915                                 struct gpfs_config_data,
 916                                 return NULL);
 917
 918         if (!config->acl) {
 919                 return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p,
 920                                                      type, mem_ctx);
 921         }
 922
 923         switch(type) {
 924         case SMB_ACL_TYPE_ACCESS:
 925                 gpfs_type = GPFS_ACL_TYPE_ACCESS;
 926                 break;
 927         case SMB_ACL_TYPE_DEFAULT:
 928                 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
 929                 break;
 930         default:
 931                 DEBUG(0, ("Got invalid type: %d\n", type));
 932                 smb_panic("exiting");
 933         }
 934
 935         return gpfsacl_get_posix_acl(path_p, gpfs_type, mem_ctx);
 936 }
 937
 938 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
 939                                         files_struct *fsp,
 940                                         TALLOC_CTX *mem_ctx)
 941 {
 942         struct gpfs_config_data *config;
 943
 944         SMB_VFS_HANDLE_GET_DATA(handle, config,
 945                                 struct gpfs_config_data,
 946                                 return NULL);
 947
 948         if (!config->acl) {
 949                 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
 950         }
 951
 952         return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
 953                                      GPFS_ACL_TYPE_ACCESS, mem_ctx);
 954 }
 955
 956 static int gpfsacl_sys_acl_blob_get_file(vfs_handle_struct *handle,
 957                                       const char *path_p,
 958                                       TALLOC_CTX *mem_ctx,
 959                                       char **blob_description,
 960                                       DATA_BLOB *blob)
 961 {
 962         struct gpfs_config_data *config;
 963         struct gpfs_opaque_acl *acl = NULL;
 964         DATA_BLOB aclblob;
 965         int result;
 966
 967         SMB_VFS_HANDLE_GET_DATA(handle, config,
 968                                 struct gpfs_config_data,
 969                                 return -1);
 970
 971         if (!config->acl) {
 972                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p,
 973                                                           mem_ctx,
 974                                                           blob_description,
 975                                                           blob);
 976         }
 977
 978         errno = 0;
 979         acl = (struct gpfs_opaque_acl *)
 980                         vfs_gpfs_getacl(mem_ctx,
 981                                         path_p,
 982                                         true,
 983                                         GPFS_ACL_TYPE_NFS4);
 984
 985         if (errno) {
 986                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
 987                                         errno, strerror(errno)));
 988
 989                 /* EINVAL means POSIX ACL, bail out on other cases */
 990                 if (errno != EINVAL) {
 991                         return -1;
 992                 }
 993         }
 994
 995         if (acl != NULL) {
 996                 /*
 997                  * file has NFSv4 ACL
 998                  *
 999                  * we only need the actual ACL blob here
1000                  * acl_version will always be NFS4 because we asked
1001                  * for NFS4
1002                  * acl_type is only used for POSIX ACLs
1003                  */
1004                 aclblob.data = (uint8_t*) acl->acl_var_data;
1005                 aclblob.length = acl->acl_buffer_len;
1006
1007                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1008                 if (!*blob_description) {
1009                         talloc_free(acl);
1010                         errno = ENOMEM;
1011                         return -1;
1012                 }
1013
1014                 result = non_posix_sys_acl_blob_get_file_helper(handle, path_p,
1015                                                                 aclblob,
1016                                                                 mem_ctx, blob);
1017
1018                 talloc_free(acl);
1019                 return result;
1020         }
1021
1022         /* fall back to POSIX ACL */
1023         return posix_sys_acl_blob_get_file(handle, path_p, mem_ctx,
1024                                            blob_description, blob);
1025 }
1026
1027 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1028                                       files_struct *fsp,
1029                                       TALLOC_CTX *mem_ctx,
1030                                       char **blob_description,
1031                                       DATA_BLOB *blob)
1032 {
1033         struct gpfs_config_data *config;
1034         struct gpfs_opaque_acl *acl = NULL;
1035         DATA_BLOB aclblob;
1036         int result;
1037
1038         SMB_VFS_HANDLE_GET_DATA(handle, config,
1039                                 struct gpfs_config_data,
1040                                 return -1);
1041
1042         if (!config->acl) {
1043                 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1044                                                         blob_description, blob);
1045         }
1046
1047         errno = 0;
1048         acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1049                                                 fsp->fsp_name->base_name,
1050                                                 true,
1051                                                 GPFS_ACL_TYPE_NFS4);
1052
1053         if (errno) {
1054                 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1055                                         errno, strerror(errno)));
1056
1057                 /* EINVAL means POSIX ACL, bail out on other cases */
1058                 if (errno != EINVAL) {
1059                         return -1;
1060                 }
1061         }
1062
1063         if (acl != NULL) {
1064                 /*
1065                  * file has NFSv4 ACL
1066                  *
1067                  * we only need the actual ACL blob here
1068                  * acl_version will always be NFS4 because we asked
1069                  * for NFS4
1070                  * acl_type is only used for POSIX ACLs
1071                  */
1072                 aclblob.data = (uint8_t*) acl->acl_var_data;
1073                 aclblob.length = acl->acl_buffer_len;
1074
1075                 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1076                 if (!*blob_description) {
1077                         talloc_free(acl);
1078                         errno = ENOMEM;
1079                         return -1;
1080                 }
1081
1082                 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1083                                                               aclblob, mem_ctx,
1084                                                               blob);
1085
1086                 talloc_free(acl);
1087                 return result;
1088         }
1089
1090         /* fall back to POSIX ACL */
1091         return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1092                                          blob_description, blob);
1093 }
1094
1095 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1096                                      SMB_ACL_TYPE_T type)
1097 {
1098         gpfs_aclLen_t len;
1099         struct gpfs_acl *result;
1100         int i;
1101
1102         DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1103
1104         len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1105                 sizeof(gpfs_ace_v1_t);
1106
1107         result = (struct gpfs_acl *)SMB_MALLOC(len);
1108         if (result == NULL) {
1109                 errno = ENOMEM;
1110                 return result;
1111         }
1112
1113         result->acl_len = len;
1114         result->acl_level = 0;
1115         result->acl_version = GPFS_ACL_VERSION_POSIX;
1116         result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1117                 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1118         result->acl_nace = pacl->count;
1119
1120         for (i=0; i<pacl->count; i++) {
1121                 const struct smb_acl_entry *ace = &pacl->acl[i];
1122                 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1123
1124                 DEBUG(10, ("Converting type %d perm %x\n",
1125                            (int)ace->a_type, (int)ace->a_perm));
1126
1127                 g_ace->ace_perm = 0;
1128
1129                 switch(ace->a_type) {
1130                 case SMB_ACL_USER:
1131                         g_ace->ace_type = GPFS_ACL_USER;
1132                         g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1133                         break;
1134                 case SMB_ACL_USER_OBJ:
1135                         g_ace->ace_type = GPFS_ACL_USER_OBJ;
1136                         g_ace->ace_perm |= ACL_PERM_CONTROL;
1137                         g_ace->ace_who = 0;
1138                         break;
1139                 case SMB_ACL_GROUP:
1140                         g_ace->ace_type = GPFS_ACL_GROUP;
1141                         g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1142                         break;
1143                 case SMB_ACL_GROUP_OBJ:
1144                         g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1145                         g_ace->ace_who = 0;
1146                         break;
1147                 case SMB_ACL_MASK:
1148                         g_ace->ace_type = GPFS_ACL_MASK;
1149                         g_ace->ace_perm = 0x8f;
1150                         g_ace->ace_who = 0;
1151                         break;
1152                 case SMB_ACL_OTHER:
1153                         g_ace->ace_type = GPFS_ACL_OTHER;
1154                         g_ace->ace_who = 0;
1155                         break;
1156                 default:
1157                         DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1158                         errno = EINVAL;
1159                         SAFE_FREE(result);
1160                         return NULL;
1161                 }
1162
1163                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1164                         ACL_PERM_READ : 0;
1165                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1166                         ACL_PERM_WRITE : 0;
1167                 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1168                         ACL_PERM_EXECUTE : 0;
1169
1170                 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1171                               g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1172         }
1173
1174         return result;
1175 }
1176
1177 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
1178                                     const char *name,
1179                                     SMB_ACL_TYPE_T type,
1180                                     SMB_ACL_T theacl)
1181 {
1182         struct gpfs_acl *gpfs_acl;
1183         int result;
1184         struct gpfs_config_data *config;
1185
1186         SMB_VFS_HANDLE_GET_DATA(handle, config,
1187                                 struct gpfs_config_data,
1188                                 return -1);
1189
1190         if (!config->acl) {
1191                 return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, type, theacl);
1192         }
1193
1194         gpfs_acl = smb2gpfs_acl(theacl, type);
1195         if (gpfs_acl == NULL) {
1196                 return -1;
1197         }
1198
1199         result = gpfswrap_putacl(discard_const_p(char, name),
1200                                  GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA, gpfs_acl);
1201
1202         SAFE_FREE(gpfs_acl);
1203         return result;
1204 }
1205
1206 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1207                                   files_struct *fsp,
1208                                   SMB_ACL_T theacl)
1209 {
1210         struct gpfs_config_data *config;
1211
1212         SMB_VFS_HANDLE_GET_DATA(handle, config,
1213                                 struct gpfs_config_data,
1214                                 return -1);
1215
1216         if (!config->acl) {
1217                 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
1218         }
1219
1220         return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
1221                                         SMB_ACL_TYPE_ACCESS, theacl);
1222 }
1223
1224 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
1225                                            const char *path)
1226 {
1227         struct gpfs_config_data *config;
1228
1229         SMB_VFS_HANDLE_GET_DATA(handle, config,
1230                                 struct gpfs_config_data,
1231                                 return -1);
1232
1233         if (!config->acl) {
1234                 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, path);
1235         }
1236
1237         errno = ENOTSUP;
1238         return -1;
1239 }
1240
1241 /*
1242  * Assumed: mode bits are shiftable and standard
1243  * Output: the new aceMask field for an smb nfs4 ace
1244  */
1245 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
1246 {
1247         const uint32 posix_nfs4map[3] = {
1248                 SMB_ACE4_EXECUTE, /* execute */
1249                 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1250                 SMB_ACE4_READ_DATA /* read */
1251         };
1252         int     i;
1253         uint32_t        posix_mask = 0x01;
1254         uint32_t        posix_bit;
1255         uint32_t        nfs4_bits;
1256
1257         for(i=0; i<3; i++) {
1258                 nfs4_bits = posix_nfs4map[i];
1259                 posix_bit = rwx & posix_mask;
1260
1261                 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1262                         if (posix_bit)
1263                                 aceMask |= nfs4_bits;
1264                         else
1265                                 aceMask &= ~nfs4_bits;
1266                 } else {
1267                         /* add deny bits when suitable */
1268                         if (!posix_bit)
1269                                 aceMask |= nfs4_bits;
1270                         else
1271                                 aceMask &= ~nfs4_bits;
1272                 } /* other ace types are unexpected */
1273
1274                 posix_mask <<= 1;
1275         }
1276
1277         return aceMask;
1278 }
1279
1280 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1281                              const char *path, mode_t mode)
1282 {
1283         SMB4ACL_T *pacl = NULL;
1284         int     result;
1285         bool    haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1286         int     i;
1287         files_struct    fake_fsp; /* TODO: rationalize parametrization */
1288         SMB4ACE_T       *smbace;
1289         TALLOC_CTX *frame = talloc_stackframe();
1290
1291         DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1292
1293         result = gpfs_get_nfs4_acl(frame, path, &pacl);
1294         if (result) {
1295                 TALLOC_FREE(frame);
1296                 return result;
1297         }
1298
1299         if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1300                 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1301         }
1302
1303         for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1304                 SMB_ACE4PROP_T  *ace = smb_get_ace4(smbace);
1305                 uint32_t        specid = ace->who.special_id;
1306
1307                 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1308                     ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1309                     specid <= SMB_ACE4_WHO_EVERYONE) {
1310
1311                         uint32_t newMask;
1312
1313                         if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1314                                 haveAllowEntry[specid] = True;
1315
1316                         /* mode >> 6 for @owner, mode >> 3 for @group,
1317                          * mode >> 0 for @everyone */
1318                         newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1319                                                       mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1320                         if (ace->aceMask!=newMask) {
1321                                 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1322                                            path, ace->aceMask, newMask, specid));
1323                         }
1324                         ace->aceMask = newMask;
1325                 }
1326         }
1327
1328         /* make sure we have at least ALLOW entries
1329          * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1330          * - if necessary
1331          */
1332         for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1333                 SMB_ACE4PROP_T  ace;
1334
1335                 if (haveAllowEntry[i]==True)
1336                         continue;
1337
1338                 ZERO_STRUCT(ace);
1339                 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1340                 ace.flags |= SMB_ACE4_ID_SPECIAL;
1341                 ace.who.special_id = i;
1342
1343                 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1344                         ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1345
1346                 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1347                                                   mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1348
1349                 /* don't add unnecessary aces */
1350                 if (!ace.aceMask)
1351                         continue;
1352
1353                 /* we add it to the END - as windows expects allow aces */
1354                 smb_add_ace4(pacl, &ace);
1355                 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1356                            path, mode, i, ace.aceMask));
1357         }
1358
1359         /* don't add complementary DENY ACEs here */
1360         ZERO_STRUCT(fake_fsp);
1361         fake_fsp.fsp_name = synthetic_smb_fname(
1362                 frame, path, NULL, NULL);
1363         if (fake_fsp.fsp_name == NULL) {
1364                 errno = ENOMEM;
1365                 TALLOC_FREE(frame);
1366                 return -1;
1367         }
1368         /* put the acl */
1369         if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1370                 TALLOC_FREE(frame);
1371                 return -1;
1372         }
1373
1374         TALLOC_FREE(frame);
1375         return 0; /* ok for [f]chmod */
1376 }
1377
1378 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1379 {
1380         struct smb_filename *smb_fname_cpath;
1381         int rc;
1382
1383         smb_fname_cpath = synthetic_smb_fname(talloc_tos(), path, NULL, NULL);
1384         if (smb_fname_cpath == NULL) {
1385                 errno = ENOMEM;
1386                 return -1;
1387         }
1388
1389         if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
1390                 return -1;
1391         }
1392
1393         /* avoid chmod() if possible, to preserve acls */
1394         if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
1395                 return 0;
1396         }
1397
1398         rc = gpfsacl_emu_chmod(handle, path, mode);
1399         if (rc == 1)
1400                 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
1401         return rc;
1402 }
1403
1404 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1405 {
1406                  SMB_STRUCT_STAT st;
1407                  int rc;
1408
1409                  if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1410                          return -1;
1411                  }
1412
1413                  /* avoid chmod() if possible, to preserve acls */
1414                  if ((st.st_ex_mode & ~S_IFMT) == mode) {
1415                          return 0;
1416                  }
1417
1418                  rc = gpfsacl_emu_chmod(handle, fsp->fsp_name->base_name,
1419                                         mode);
1420                  if (rc == 1)
1421                          return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1422                  return rc;
1423 }
1424
1425 static int gpfs_set_xattr(struct vfs_handle_struct *handle,  const char *path,
1426                            const char *name, const void *value, size_t size,  int flags){
1427         struct xattr_DOSATTRIB dosattrib;
1428         enum ndr_err_code ndr_err;
1429         DATA_BLOB blob;
1430         unsigned int dosmode=0;
1431         struct gpfs_winattr attrs;
1432         int ret = 0;
1433         struct gpfs_config_data *config;
1434
1435         SMB_VFS_HANDLE_GET_DATA(handle, config,
1436                                 struct gpfs_config_data,
1437                                 return -1);
1438
1439         if (!config->winattr) {
1440                 DEBUG(10, ("gpfs_set_xattr:name is %s -> next\n",name));
1441                 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
1442         }
1443
1444         DEBUG(10, ("gpfs_set_xattr: %s \n",path));
1445
1446         /* Only handle DOS Attributes */
1447         if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
1448                 DEBUG(5, ("gpfs_set_xattr:name is %s\n",name));
1449                 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
1450         }
1451
1452         blob.data = discard_const_p(uint8_t, value);
1453         blob.length = size;
1454
1455         ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &dosattrib,
1456                         (ndr_pull_flags_fn_t)ndr_pull_xattr_DOSATTRIB);
1457
1458         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1459                 DEBUG(1, ("gpfs_set_xattr: bad ndr decode "
1460                           "from EA on file %s: Error = %s\n",
1461                           path, ndr_errstr(ndr_err)));
1462                 return false;
1463         }
1464
1465         if (dosattrib.version != 3) {
1466                 DEBUG(1, ("gpfs_set_xattr: expected dosattrib version 3, got "
1467                           "%d\n", (int)dosattrib.version));
1468                 return false;
1469         }
1470         if (!(dosattrib.info.info3.valid_flags & XATTR_DOSINFO_ATTRIB)) {
1471                 DEBUG(10, ("gpfs_set_xattr: XATTR_DOSINFO_ATTRIB not "
1472                            "valid, ignoring\n"));
1473                 return true;
1474         }
1475
1476         dosmode = dosattrib.info.info3.attrib;
1477
1478         attrs.winAttrs = 0;
1479         /*Just map RD_ONLY, ARCHIVE, SYSTEM HIDDEN and SPARSE. Ignore the others*/
1480         if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1481                 attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
1482         }
1483         if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1484                         attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
1485                 }
1486         if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1487                         attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
1488                 }
1489         if (dosmode & FILE_ATTRIBUTE_READONLY){
1490                         attrs.winAttrs |= GPFS_WINATTR_READONLY;
1491         }
1492         if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1493                 attrs.winAttrs |= GPFS_WINATTR_SPARSE_FILE;
1494         }
1495
1496
1497         ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1498                                          GPFS_WINATTR_SET_ATTRS, &attrs);
1499         if ( ret == -1){
1500                 if (errno == ENOSYS) {
1501                         return SMB_VFS_NEXT_SETXATTR(handle, path, name, value,
1502                                                      size, flags);
1503                 }
1504
1505                 DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
1506                 return -1;
1507         }
1508
1509         DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
1510         return 0;
1511 }
1512
1513 static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle,  const char *path,
1514                               const char *name, void *value, size_t size){
1515         char *attrstr = value;
1516         unsigned int dosmode = 0;
1517         struct gpfs_winattr attrs;
1518         int ret = 0;
1519         struct gpfs_config_data *config;
1520
1521         SMB_VFS_HANDLE_GET_DATA(handle, config,
1522                                 struct gpfs_config_data,
1523                                 return -1);
1524
1525         if (!config->winattr) {
1526                 DEBUG(10, ("gpfs_get_xattr:name is %s -> next\n",name));
1527                 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
1528         }
1529
1530         DEBUG(10, ("gpfs_get_xattr: %s \n",path));
1531
1532         /* Only handle DOS Attributes */
1533         if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
1534                 DEBUG(5, ("gpfs_get_xattr:name is %s\n",name));
1535                 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
1536         }
1537
1538         ret = gpfswrap_get_winattrs_path(discard_const_p(char, path), &attrs);
1539         if ( ret == -1){
1540                 int dbg_lvl;
1541
1542                 if (errno == ENOSYS) {
1543                         return SMB_VFS_NEXT_GETXATTR(handle, path, name, value,
1544                                                      size);
1545                 }
1546
1547                 if (errno != EPERM && errno != EACCES) {
1548                         dbg_lvl = 1;
1549                 } else {
1550                         dbg_lvl = 5;
1551                 }
1552                 DEBUG(dbg_lvl, ("gpfs_get_xattr: Get GPFS attributes failed: "
1553                               "%d (%s)\n", ret, strerror(errno)));
1554                 return -1;
1555         }
1556
1557         DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
1558
1559         /*Just map RD_ONLY, ARCHIVE, SYSTEM, HIDDEN and SPARSE. Ignore the others*/
1560         if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
1561                 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1562         }
1563         if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
1564                 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1565         }
1566         if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
1567                 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1568         }
1569         if (attrs.winAttrs & GPFS_WINATTR_READONLY){
1570                 dosmode |= FILE_ATTRIBUTE_READONLY;
1571         }
1572         if (attrs.winAttrs & GPFS_WINATTR_SPARSE_FILE) {
1573                 dosmode |= FILE_ATTRIBUTE_SPARSE;
1574         }
1575
1576         snprintf(attrstr, size, "0x%2.2x",
1577                  (unsigned int)(dosmode & SAMBA_ATTRIBUTES_MASK));
1578         DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
1579         return 4;
1580 }
1581
1582 #if defined(HAVE_FSTATAT)
1583 static int stat_with_capability(struct vfs_handle_struct *handle,
1584                                 struct smb_filename *smb_fname, int flag)
1585 {
1586         int fd = -1;
1587         bool b;
1588         char *dir_name;
1589         const char *rel_name = NULL;
1590         struct stat st;
1591         int ret = -1;
1592
1593         b = parent_dirname(talloc_tos(), smb_fname->base_name,
1594                            &dir_name, &rel_name);
1595         if (!b) {
1596                 errno = ENOMEM;
1597                 return -1;
1598         }
1599
1600         fd = open(dir_name, O_RDONLY, 0);
1601         TALLOC_FREE(dir_name);
1602         if (fd == -1) {
1603                 return -1;
1604         }
1605
1606         set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1607         ret = fstatat(fd, rel_name, &st, flag);
1608         drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1609
1610         close(fd);
1611
1612         if (ret == 0) {
1613                 init_stat_ex_from_stat(
1614                         &smb_fname->st, &st,
1615                         lp_fake_directory_create_times(SNUM(handle->conn)));
1616         }
1617
1618         return ret;
1619 }
1620 #endif
1621
1622 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1623                          struct smb_filename *smb_fname)
1624 {
1625         struct gpfs_winattr attrs;
1626         char *fname = NULL;
1627         NTSTATUS status;
1628         int ret;
1629         struct gpfs_config_data *config;
1630
1631         SMB_VFS_HANDLE_GET_DATA(handle, config,
1632                                 struct gpfs_config_data,
1633                                 return -1);
1634
1635         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1636 #if defined(HAVE_FSTATAT)
1637         if (ret == -1 && errno == EACCES) {
1638                 DEBUG(10, ("Trying stat with capability for %s\n",
1639                            smb_fname->base_name));
1640                 ret = stat_with_capability(handle, smb_fname, 0);
1641         }
1642 #endif
1643         if (ret == -1) {
1644                 return -1;
1645         }
1646
1647         if (!config->winattr) {
1648                 return 0;
1649         }
1650
1651         status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
1652         if (!NT_STATUS_IS_OK(status)) {
1653                 errno = map_errno_from_nt_status(status);
1654                 return -1;
1655         }
1656         ret = gpfswrap_get_winattrs_path(discard_const_p(char, fname), &attrs);
1657         TALLOC_FREE(fname);
1658         if (ret == 0) {
1659                 smb_fname->st.st_ex_calculated_birthtime = false;
1660                 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1661                 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1662         }
1663         return 0;
1664 }
1665
1666 static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
1667                           struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1668 {
1669         struct gpfs_winattr attrs;
1670         int ret;
1671         struct gpfs_config_data *config;
1672
1673         SMB_VFS_HANDLE_GET_DATA(handle, config,
1674                                 struct gpfs_config_data,
1675                                 return -1);
1676
1677         ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1678         if (ret == -1) {
1679                 return -1;
1680         }
1681         if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
1682                 return 0;
1683         }
1684         if (!config->winattr) {
1685                 return 0;
1686         }
1687
1688         ret = gpfswrap_get_winattrs(fsp->fh->fd, &attrs);
1689         if (ret == 0) {
1690                 sbuf->st_ex_calculated_birthtime = false;
1691                 sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1692                 sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1693         }
1694         return 0;
1695 }
1696
1697 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1698                           struct smb_filename *smb_fname)
1699 {
1700         struct gpfs_winattr attrs;
1701         char *path = NULL;
1702         NTSTATUS status;
1703         int ret;
1704         struct gpfs_config_data *config;
1705
1706         SMB_VFS_HANDLE_GET_DATA(handle, config,
1707                                 struct gpfs_config_data,
1708                                 return -1);
1709
1710         ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1711 #if defined(HAVE_FSTATAT)
1712         if (ret == -1 && errno == EACCES) {
1713                 DEBUG(10, ("Trying lstat with capability for %s\n",
1714                            smb_fname->base_name));
1715                 ret = stat_with_capability(handle, smb_fname,
1716                                            AT_SYMLINK_NOFOLLOW);
1717         }
1718 #endif
1719
1720         if (ret == -1) {
1721                 return -1;
1722         }
1723         if (!config->winattr) {
1724                 return 0;
1725         }
1726
1727         status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1728         if (!NT_STATUS_IS_OK(status)) {
1729                 errno = map_errno_from_nt_status(status);
1730                 return -1;
1731         }
1732         ret = gpfswrap_get_winattrs_path(discard_const_p(char, path), &attrs);
1733         TALLOC_FREE(path);
1734         if (ret == 0) {
1735                 smb_fname->st.st_ex_calculated_birthtime = false;
1736                 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1737                 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1738         }
1739         return 0;
1740 }
1741
1742 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1743                                   int idx, int *flags)
1744 {
1745         if (!null_timespec(ts)) {
1746                 *flags |= 1 << idx;
1747                 gt[idx].tv_sec = ts.tv_sec;
1748                 gt[idx].tv_nsec = ts.tv_nsec;
1749                 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1750         }
1751 }
1752
1753 static int smbd_gpfs_set_times_path(char *path, struct smb_file_time *ft)
1754 {
1755         gpfs_timestruc_t gpfs_times[4];
1756         int flags = 0;
1757         int rc;
1758
1759         ZERO_ARRAY(gpfs_times);
1760         timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1761         timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1762         /* No good mapping from LastChangeTime to ctime, not storing */
1763         timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1764
1765         if (!flags) {
1766                 DEBUG(10, ("nothing to do, return to avoid EINVAL\n"));
1767                 return 0;
1768         }
1769
1770         rc = gpfswrap_set_times_path(path, flags, gpfs_times);
1771
1772         if (rc != 0 && errno != ENOSYS) {
1773                 DEBUG(1,("gpfs_set_times() returned with error %s\n",
1774                         strerror(errno)));
1775         }
1776
1777         return rc;
1778 }
1779
1780 static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
1781                         const struct smb_filename *smb_fname,
1782                         struct smb_file_time *ft)
1783 {
1784
1785         struct gpfs_winattr attrs;
1786         int ret;
1787         char *path = NULL;
1788         NTSTATUS status;
1789         struct gpfs_config_data *config;
1790
1791         SMB_VFS_HANDLE_GET_DATA(handle, config,
1792                                 struct gpfs_config_data,
1793                                 return -1);
1794
1795         status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1796         if (!NT_STATUS_IS_OK(status)) {
1797                 errno = map_errno_from_nt_status(status);
1798                 return -1;
1799         }
1800
1801         /* Try to use gpfs_set_times if it is enabled and available */
1802         if (config->settimes) {
1803                 ret = smbd_gpfs_set_times_path(path, ft);
1804
1805                 if (ret == 0 || (ret == -1 && errno != ENOSYS)) {
1806                         return ret;
1807                 }
1808         }
1809
1810         DEBUG(10,("gpfs_set_times() not available or disabled, "
1811                   "use ntimes and winattr\n"));
1812
1813         ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1814         if(ret == -1){
1815                 /* don't complain if access was denied */
1816                 if (errno != EPERM && errno != EACCES) {
1817                         DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed:"
1818                                  "%s", strerror(errno)));
1819                 }
1820                 return -1;
1821         }
1822
1823         if(null_timespec(ft->create_time)){
1824                 DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
1825                 return 0;
1826         }
1827
1828         if (!config->winattr) {
1829                 return 0;
1830         }
1831
1832         attrs.winAttrs = 0;
1833         attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1834         attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1835
1836         ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1837                                          GPFS_WINATTR_SET_CREATION_TIME,
1838                                          &attrs);
1839         if(ret == -1 && errno != ENOSYS){
1840                 DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
1841                 return -1;
1842         }
1843         return 0;
1844
1845 }
1846
1847 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1848                        struct files_struct *fsp, enum vfs_fallocate_mode mode,
1849                        off_t offset, off_t len)
1850 {
1851         int ret;
1852         struct gpfs_config_data *config;
1853
1854         SMB_VFS_HANDLE_GET_DATA(handle, config,
1855                                 struct gpfs_config_data,
1856                                 return -1);
1857
1858         if (!config->prealloc) {
1859                 /* you should better not run fallocate() on GPFS at all */
1860                 errno = ENOTSUP;
1861                 return -1;
1862         }
1863
1864         if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1865                 DEBUG(10, ("Unsupported VFS_FALLOCATE_KEEP_SIZE\n"));
1866                 errno = ENOTSUP;
1867                 return -1;
1868         }
1869
1870         ret = gpfswrap_prealloc(fsp->fh->fd, offset, len);
1871
1872         if (ret == -1 && errno != ENOSYS) {
1873                 DEBUG(0, ("GPFS prealloc failed: %s\n", strerror(errno)));
1874         } else if (ret == -1 && errno == ENOSYS) {
1875                 DEBUG(10, ("GPFS prealloc not supported.\n"));
1876         } else {
1877                 DEBUG(10, ("GPFS prealloc succeeded.\n"));
1878         }
1879
1880         return ret;
1881 }
1882
1883 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1884                                 off_t len)
1885 {
1886         int result;
1887         struct gpfs_config_data *config;
1888
1889         SMB_VFS_HANDLE_GET_DATA(handle, config,
1890                                 struct gpfs_config_data,
1891                                 return -1);
1892
1893         if (!config->ftruncate) {
1894                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1895         }
1896
1897         result = gpfswrap_ftruncate(fsp->fh->fd, len);
1898         if ((result == -1) && (errno == ENOSYS)) {
1899                 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1900         }
1901         return result;
1902 }
1903
1904 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1905                                 const struct smb_filename *fname,
1906                                 SMB_STRUCT_STAT *sbuf)
1907 {
1908         struct gpfs_winattr attrs;
1909         char *path = NULL;
1910         NTSTATUS status;
1911         struct gpfs_config_data *config;
1912         int ret;
1913
1914         SMB_VFS_HANDLE_GET_DATA(handle, config,
1915                                 struct gpfs_config_data,
1916                                 return -1);
1917
1918         if (!config->winattr) {
1919                 return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
1920         }
1921
1922         status = get_full_smb_filename(talloc_tos(), fname, &path);
1923         if (!NT_STATUS_IS_OK(status)) {
1924                 errno = map_errno_from_nt_status(status);
1925                 return -1;
1926         }
1927
1928         ret = gpfswrap_get_winattrs_path(path, &attrs);
1929         if (ret == -1) {
1930                 TALLOC_FREE(path);
1931                 return false;
1932         }
1933
1934         if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1935                 DEBUG(10, ("%s is offline\n", path));
1936                 TALLOC_FREE(path);
1937                 return true;
1938         }
1939         DEBUG(10, ("%s is online\n", path));
1940         TALLOC_FREE(path);
1941         return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
1942 }
1943
1944 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1945                                struct files_struct *fsp)
1946 {
1947         return vfs_gpfs_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st);
1948 }
1949
1950 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1951                                  files_struct *fsp, const DATA_BLOB *hdr,
1952                                  off_t offset, size_t n)
1953 {
1954         if (SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name, &fsp->fsp_name->st))
1955         {
1956                 errno = ENOSYS;
1957                 return -1;
1958         }
1959         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
1960 }
1961
1962 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
1963                             const char *service, const char *user)
1964 {
1965         struct gpfs_config_data *config;
1966         int ret;
1967
1968         gpfswrap_lib_init(0);
1969
1970         config = talloc_zero(handle->conn, struct gpfs_config_data);
1971         if (!config) {
1972                 DEBUG(0, ("talloc_zero() failed\n"));
1973                 errno = ENOMEM;
1974                 return -1;
1975         }
1976
1977         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
1978         if (ret < 0) {
1979                 TALLOC_FREE(config);
1980                 return ret;
1981         }
1982
1983         config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1984                                         "sharemodes", true);
1985
1986         config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
1987                                         "leases", true);
1988
1989         config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
1990                                    "hsm", false);
1991
1992         config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
1993                                       "syncio", false);
1994
1995         config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
1996                                        "winattr", false);
1997
1998         config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
1999                                          "ftruncate", true);
2000
2001         config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
2002                                                "getrealfilename", true);
2003
2004         config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
2005                                           "dfreequota", false);
2006
2007         config->prealloc = lp_parm_bool(SNUM(handle->conn), "gpfs",
2008                                    "prealloc", true);
2009
2010         config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
2011
2012         config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2013                                         "settimes", true);
2014         config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
2015                                        "recalls", true);
2016
2017         SMB_VFS_HANDLE_SET_DATA(handle, config,
2018                                 NULL, struct gpfs_config_data,
2019                                 return -1);
2020
2021         if (config->leases) {
2022                 /*
2023                  * GPFS lease code is based on kernel oplock code
2024                  * so make sure it is turned on
2025                  */
2026                 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
2027                         DEBUG(5, ("Enabling kernel oplocks for "
2028                                   "gpfs:leases to work\n"));
2029                         lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
2030                                         "true");
2031                 }
2032
2033                 /*
2034                  * as the kernel does not properly support Level II oplocks
2035                  * and GPFS leases code is based on kernel infrastructure, we
2036                  * need to turn off Level II oplocks if gpfs:leases is enabled
2037                  */
2038                 if (lp_level2_oplocks(SNUM(handle->conn))) {
2039                         DEBUG(5, ("gpfs:leases are enabled, disabling "
2040                                   "Level II oplocks\n"));
2041                         lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
2042                                         "false");
2043                 }
2044         }
2045
2046         return 0;
2047 }
2048
2049 static int get_gpfs_fset_id(const char *pathname, int *fset_id)
2050 {
2051         int err, fd, errno_fcntl;
2052
2053         struct {
2054                 gpfsFcntlHeader_t hdr;
2055                 gpfsGetFilesetName_t fsn;
2056         } arg;
2057
2058         arg.hdr.totalLength = sizeof(arg);
2059         arg.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
2060         arg.hdr.fcntlReserved = 0;
2061         arg.fsn.structLen = sizeof(arg.fsn);
2062         arg.fsn.structType = GPFS_FCNTL_GET_FILESETNAME;
2063
2064         fd = open(pathname, O_RDONLY);
2065         if (fd == -1) {
2066                 DEBUG(1, ("Could not open %s: %s\n",
2067                           pathname, strerror(errno)));
2068                 return fd;
2069         }
2070
2071         err = gpfswrap_fcntl(fd, &arg);
2072         errno_fcntl = errno;
2073         close(fd);
2074
2075         if (err) {
2076                 errno = errno_fcntl;
2077                 if (errno != ENOSYS) {
2078                         DEBUG(1, ("GPFS_FCNTL_GET_FILESETNAME for %s failed: "
2079                                   "%s\n", pathname, strerror(errno)));
2080                 }
2081                 return err;
2082         }
2083
2084         err = gpfswrap_getfilesetid(discard_const_p(char, pathname),
2085                                     arg.fsn.buffer, fset_id);
2086         if (err && errno != ENOSYS) {
2087                 DEBUG(1, ("gpfs_getfilesetid for %s failed: %s\n",
2088                           pathname, strerror(errno)));
2089         }
2090         return err;
2091 }
2092
2093 static int get_gpfs_quota(const char *pathname, int type, int id,
2094                           struct gpfs_quotaInfo *qi)
2095 {
2096         int ret;
2097
2098         ZERO_STRUCTP(qi);
2099         ret = gpfswrap_quotactl(discard_const_p(char, pathname),
2100                                 GPFS_QCMD(Q_GETQUOTA, type), id, qi);
2101
2102         if (ret) {
2103                 if (errno == GPFS_E_NO_QUOTA_INST) {
2104                         DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
2105                 } else if (errno != ENOSYS) {
2106                         DEBUG(0, ("Get quota failed, type %d, id, %d, "
2107                                   "errno %d.\n", type, id, errno));
2108                 }
2109
2110                 return ret;
2111         }
2112
2113         DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2114                    type, id, qi->blockUsage, qi->blockHardLimit,
2115                    qi->blockSoftLimit, qi->blockGraceTime));
2116
2117         return ret;
2118 }
2119
2120 static int vfs_gpfs_get_quotas(const char *path, uid_t uid, gid_t gid,
2121                                int *fset_id,
2122                                struct gpfs_quotaInfo *qi_user,
2123                                struct gpfs_quotaInfo *qi_group,
2124                                struct gpfs_quotaInfo *qi_fset)
2125 {
2126         int err;
2127         char *dir_path;
2128         bool b;
2129
2130         /*
2131          * We want to always use the directory to get the fileset id,
2132          * because files might have a share mode. We also do not want
2133          * to get the parent directory when there is already a
2134          * directory to avoid stepping in a different fileset.  The
2135          * path passed here is currently either "." or a filename, so
2136          * this is ok. The proper solution would be having a way to
2137          * query the fileset id without opening the file.
2138          */
2139         b = parent_dirname(talloc_tos(), path, &dir_path, NULL);
2140         if (!b) {
2141                 errno = ENOMEM;
2142                 return -1;
2143         }
2144
2145         DEBUG(10, ("path %s, directory %s\n", path, dir_path));
2146
2147         err = get_gpfs_fset_id(dir_path, fset_id);
2148         if (err) {
2149                 DEBUG(0, ("Get fset id failed path %s, dir %s, errno %d.\n",
2150                           path, dir_path, errno));
2151                 return err;
2152         }
2153
2154         err = get_gpfs_quota(path, GPFS_USRQUOTA, uid, qi_user);
2155         if (err) {
2156                 return err;
2157         }
2158
2159         err = get_gpfs_quota(path, GPFS_GRPQUOTA, gid, qi_group);
2160         if (err) {
2161                 return err;
2162         }
2163
2164         err = get_gpfs_quota(path, GPFS_FILESETQUOTA, *fset_id, qi_fset);
2165         if (err) {
2166                 return err;
2167         }
2168
2169         return 0;
2170 }
2171
2172 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2173                                      uint64_t *dfree, uint64_t *dsize)
2174 {
2175         uint64_t usage, limit;
2176
2177         /*
2178          * The quota reporting is done in units of 1024 byte blocks, but
2179          * sys_fsusage uses units of 512 byte blocks, adjust the block number
2180          * accordingly. Also filter possibly negative usage counts from gpfs.
2181          */
2182         usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2183         limit = (uint64_t)qi.blockHardLimit * 2;
2184
2185         /*
2186          * When the grace time for the exceeded soft block quota has been
2187          * exceeded, the soft block quota becomes an additional hard limit.
2188          */
2189         if (qi.blockSoftLimit &&
2190             qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2191                 /* report disk as full */
2192                 *dfree = 0;
2193                 *dsize = MIN(*dsize, usage);
2194         }
2195
2196         if (!qi.blockHardLimit)
2197                 return;
2198
2199         if (usage >= limit) {
2200                 /* report disk as full */
2201                 *dfree = 0;
2202                 *dsize = MIN(*dsize, usage);
2203
2204         } else {
2205                 /* limit has not been reached, determine "free space" */
2206                 *dfree = MIN(*dfree, limit - usage);
2207                 *dsize = MIN(*dsize, limit);
2208         }
2209 }
2210
2211 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle, const char *path,
2212                                    uint64_t *bsize,
2213                                    uint64_t *dfree, uint64_t *dsize)
2214 {
2215         struct security_unix_token *utok;
2216         struct gpfs_quotaInfo qi_user, qi_group, qi_fset;
2217         struct gpfs_config_data *config;
2218         int err, fset_id;
2219         time_t cur_time;
2220
2221         SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2222                                 return (uint64_t)-1);
2223         if (!config->dfreequota) {
2224                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2225                                               bsize, dfree, dsize);
2226         }
2227
2228         err = sys_fsusage(path, dfree, dsize);
2229         if (err) {
2230                 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2231                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2232                                               bsize, dfree, dsize);
2233         }
2234
2235         /* sys_fsusage returns units of 512 bytes */
2236         *bsize = 512;
2237
2238         DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2239                    (unsigned long long)*dfree, (unsigned long long)*dsize));
2240
2241         utok = handle->conn->session_info->unix_token;
2242         err = vfs_gpfs_get_quotas(path, utok->uid, utok->gid, &fset_id,
2243                                   &qi_user, &qi_group, &qi_fset);
2244         if (err) {
2245                 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2246                                               bsize, dfree, dsize);
2247         }
2248
2249         cur_time = time(NULL);
2250
2251         /* Adjust free space and size according to quota limits. */
2252         vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2253         vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2254
2255         /* Id 0 indicates the default quota, not an actual quota */
2256         if (fset_id != 0) {
2257                 vfs_gpfs_disk_free_quota(qi_fset, cur_time, dfree, dsize);
2258         }
2259
2260         disk_norm(bsize, dfree, dsize);
2261         return *dfree;
2262 }
2263
2264 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2265                                       enum timestamp_set_resolution *p_ts_res)
2266 {
2267         struct gpfs_config_data *config;
2268         uint32_t next;
2269
2270         next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2271
2272         SMB_VFS_HANDLE_GET_DATA(handle, config,
2273                                 struct gpfs_config_data,
2274                                 return next);
2275
2276         if (config->hsm) {
2277                 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2278         }
2279         return next;
2280 }
2281
2282 static int vfs_gpfs_open(struct vfs_handle_struct *handle,
2283                          struct smb_filename *smb_fname, files_struct *fsp,
2284                          int flags, mode_t mode)
2285 {
2286         struct gpfs_config_data *config;
2287
2288         SMB_VFS_HANDLE_GET_DATA(handle, config,
2289                                 struct gpfs_config_data,
2290                                 return -1);
2291
2292         if (config->hsm && !config->recalls) {
2293                 if (SMB_VFS_IS_OFFLINE(handle->conn, smb_fname, &smb_fname->st))
2294                 {
2295                         DEBUG(10, ("Refusing access to offline file %s\n",
2296                                   fsp_str_dbg(fsp)));
2297                         errno = EACCES;
2298                         return -1;
2299                 }
2300         }
2301
2302         if (config->syncio) {
2303                 flags |= O_SYNC;
2304         }
2305         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
2306 }
2307
2308 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2309                               void *data, size_t n, off_t offset)
2310 {
2311         ssize_t ret;
2312         bool was_offline;
2313
2314         was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2315                                          &fsp->fsp_name->st);
2316
2317         ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2318
2319         if ((ret != -1) && was_offline) {
2320                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2321                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2322                              fsp->fsp_name->base_name);
2323         }
2324
2325         return ret;
2326 }
2327
2328 struct vfs_gpfs_pread_state {
2329         struct files_struct *fsp;
2330         ssize_t ret;
2331         int err;
2332         bool was_offline;
2333 };
2334
2335 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2336
2337 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2338                                               TALLOC_CTX *mem_ctx,
2339                                               struct tevent_context *ev,
2340                                               struct files_struct *fsp,
2341                                               void *data, size_t n,
2342                                               off_t offset)
2343 {
2344         struct tevent_req *req, *subreq;
2345         struct vfs_gpfs_pread_state *state;
2346
2347         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2348         if (req == NULL) {
2349                 return NULL;
2350         }
2351         state->was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2352                                                 &fsp->fsp_name->st);
2353         state->fsp = fsp;
2354         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2355                                          n, offset);
2356         if (tevent_req_nomem(subreq, req)) {
2357                 return tevent_req_post(req, ev);
2358         }
2359         tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2360         return req;
2361 }
2362
2363 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2364 {
2365         struct tevent_req *req = tevent_req_callback_data(
2366                 subreq, struct tevent_req);
2367         struct vfs_gpfs_pread_state *state = tevent_req_data(
2368                 req, struct vfs_gpfs_pread_state);
2369
2370         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->err);
2371         TALLOC_FREE(subreq);
2372         tevent_req_done(req);
2373 }
2374
2375 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req, int *err)
2376 {
2377         struct vfs_gpfs_pread_state *state = tevent_req_data(
2378                 req, struct vfs_gpfs_pread_state);
2379         struct files_struct *fsp = state->fsp;
2380
2381         if (tevent_req_is_unix_error(req, err)) {
2382                 return -1;
2383         }
2384         *err = state->err;
2385
2386         if ((state->ret != -1) && state->was_offline) {
2387                 DEBUG(10, ("sending notify\n"));
2388                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2389                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2390                              fsp->fsp_name->base_name);
2391         }
2392
2393         return state->ret;
2394 }
2395
2396 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2397                                const void *data, size_t n, off_t offset)
2398 {
2399         ssize_t ret;
2400         bool was_offline;
2401
2402         was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2403                                          &fsp->fsp_name->st);
2404
2405         ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2406
2407         if ((ret != -1) && was_offline) {
2408                 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2409                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2410                              fsp->fsp_name->base_name);
2411         }
2412
2413         return ret;
2414 }
2415
2416 struct vfs_gpfs_pwrite_state {
2417         struct files_struct *fsp;
2418         ssize_t ret;
2419         int err;
2420         bool was_offline;
2421 };
2422
2423 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2424
2425 static struct tevent_req *vfs_gpfs_pwrite_send(
2426         struct vfs_handle_struct *handle,
2427         TALLOC_CTX *mem_ctx,
2428         struct tevent_context *ev,
2429         struct files_struct *fsp,
2430         const void *data, size_t n,
2431         off_t offset)
2432 {
2433         struct tevent_req *req, *subreq;
2434         struct vfs_gpfs_pwrite_state *state;
2435
2436         req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2437         if (req == NULL) {
2438                 return NULL;
2439         }
2440         state->was_offline = SMB_VFS_IS_OFFLINE(handle->conn, fsp->fsp_name,
2441                                                 &fsp->fsp_name->st);
2442         state->fsp = fsp;
2443         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2444                                          n, offset);
2445         if (tevent_req_nomem(subreq, req)) {
2446                 return tevent_req_post(req, ev);
2447         }
2448         tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2449         return req;
2450 }
2451
2452 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2453 {
2454         struct tevent_req *req = tevent_req_callback_data(
2455                 subreq, struct tevent_req);
2456         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2457                 req, struct vfs_gpfs_pwrite_state);
2458
2459         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err);
2460         TALLOC_FREE(subreq);
2461         tevent_req_done(req);
2462 }
2463
2464 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req, int *err)
2465 {
2466         struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2467                 req, struct vfs_gpfs_pwrite_state);
2468         struct files_struct *fsp = state->fsp;
2469
2470         if (tevent_req_is_unix_error(req, err)) {
2471                 return -1;
2472         }
2473         *err = state->err;
2474
2475         if ((state->ret != -1) && state->was_offline) {
2476                 DEBUG(10, ("sending notify\n"));
2477                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2478                              FILE_NOTIFY_CHANGE_ATTRIBUTES,
2479                              fsp->fsp_name->base_name);
2480         }
2481
2482         return state->ret;
2483 }
2484
2485
2486 static struct vfs_fn_pointers vfs_gpfs_fns = {
2487         .connect_fn = vfs_gpfs_connect,
2488         .disk_free_fn = vfs_gpfs_disk_free,
2489         .fs_capabilities_fn = vfs_gpfs_capabilities,
2490         .kernel_flock_fn = vfs_gpfs_kernel_flock,
2491         .linux_setlease_fn = vfs_gpfs_setlease,
2492         .get_real_filename_fn = vfs_gpfs_get_real_filename,
2493         .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2494         .get_nt_acl_fn = gpfsacl_get_nt_acl,
2495         .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2496         .sys_acl_get_file_fn = gpfsacl_sys_acl_get_file,
2497         .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2498         .sys_acl_blob_get_file_fn = gpfsacl_sys_acl_blob_get_file,
2499         .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2500         .sys_acl_set_file_fn = gpfsacl_sys_acl_set_file,
2501         .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2502         .sys_acl_delete_def_file_fn = gpfsacl_sys_acl_delete_def_file,
2503         .chmod_fn = vfs_gpfs_chmod,
2504         .fchmod_fn = vfs_gpfs_fchmod,
2505         .close_fn = vfs_gpfs_close,
2506         .setxattr_fn = gpfs_set_xattr,
2507         .getxattr_fn = gpfs_get_xattr,
2508         .stat_fn = vfs_gpfs_stat,
2509         .fstat_fn = vfs_gpfs_fstat,
2510         .lstat_fn = vfs_gpfs_lstat,
2511         .ntimes_fn = vfs_gpfs_ntimes,
2512         .is_offline_fn = vfs_gpfs_is_offline,
2513         .aio_force_fn = vfs_gpfs_aio_force,
2514         .sendfile_fn = vfs_gpfs_sendfile,
2515         .fallocate_fn = vfs_gpfs_fallocate,
2516         .open_fn = vfs_gpfs_open,
2517         .pread_fn = vfs_gpfs_pread,
2518         .pread_send_fn = vfs_gpfs_pread_send,
2519         .pread_recv_fn = vfs_gpfs_pread_recv,
2520         .pwrite_fn = vfs_gpfs_pwrite,
2521         .pwrite_send_fn = vfs_gpfs_pwrite_send,
2522         .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2523         .ftruncate_fn = vfs_gpfs_ftruncate
2524 };
2525
2526 NTSTATUS vfs_gpfs_init(void);
2527 NTSTATUS vfs_gpfs_init(void)
2528 {
2529         int ret;
2530
2531         ret = gpfswrap_init();
2532         if (ret != 0) {
2533                 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2534         }
2535
2536         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2537                                 &vfs_gpfs_fns);
2538 }