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vfs_ceph: replace deprecated ceph_shutdown() call
[Samba.git] / source3 / modules / vfs_gpfs.c
blobf7434c95d820c5d303d8427529c2997a0fed1186
1 /*
2 * Unix SMB/CIFS implementation.
3 * Samba VFS module for GPFS filesystem
4 * Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
5 * Copyright (C) Christof Schmitt 2015
6 * Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
7 * and Gomati Mohanan <gomati.mohanan@in.ibm.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "smbd/smbd.h"
25 #include "include/smbprofile.h"
26 #include "modules/non_posix_acls.h"
27 #include "libcli/security/security.h"
28 #include "nfs4_acls.h"
29 #include "system/filesys.h"
30 #include "auth.h"
31 #include "lib/util/tevent_unix.h"
32 #include "lib/util/gpfswrap.h"
33
34 #undef DBGC_CLASS
35 #define DBGC_CLASS DBGC_VFS
36
37 #ifndef GPFS_GETACL_NATIVE
38 #define GPFS_GETACL_NATIVE 0x00000004
39 #endif
40
41 struct gpfs_config_data {
42 struct smbacl4_vfs_params nfs4_params;
43 bool sharemodes;
44 bool leases;
45 bool hsm;
46 bool syncio;
47 bool winattr;
48 bool ftruncate;
49 bool getrealfilename;
50 bool dfreequota;
51 bool prealloc;
52 bool acl;
53 bool settimes;
54 bool recalls;
55 };
56
57 struct gpfs_fsp_extension {
58 bool offline;
59 };
60
61 static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
62 {
63 if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
64 return gacl->v4Level1.acl_flags;
65 }
66 return 0;
67 }
68
69 static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
70 {
71 if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
72 return &gacl->v4Level1.ace_v4[i];
73 }
74 return &gacl->ace_v4[i];
75 }
76
77 static bool set_gpfs_sharemode(files_struct *fsp, uint32_t access_mask,
78 uint32_t share_access)
79 {
80 unsigned int allow = GPFS_SHARE_NONE;
81 unsigned int deny = GPFS_DENY_NONE;
82 int result;
83
84 if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
85 /* No real file, don't disturb */
86 return True;
87 }
88
89 allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
90 DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
91 allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
92 GPFS_SHARE_READ : 0;
93
94 if (allow == GPFS_SHARE_NONE) {
95 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
96 }
97 else {
98 deny |= (share_access & FILE_SHARE_WRITE) ?
99 0 : GPFS_DENY_WRITE;
100 deny |= (share_access & (FILE_SHARE_READ)) ?
101 0 : GPFS_DENY_READ;
102 }
103 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
104 access_mask, allow, share_access, deny));
105
106 result = gpfswrap_set_share(fsp->fh->fd, allow, deny);
107 if (result != 0) {
108 if (errno == ENOSYS) {
109 DEBUG(5, ("VFS module vfs_gpfs loaded, but gpfs "
110 "set_share function support not available. "
111 "Allowing access\n"));
112 return True;
113 } else {
114 DEBUG(10, ("gpfs_set_share failed: %s\n",
115 strerror(errno)));
116 }
117 }
118
119 return (result == 0);
120 }
121
122 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
123 uint32_t share_mode, uint32_t access_mask)
124 {
125
126 struct gpfs_config_data *config;
127 int ret = 0;
128
129 START_PROFILE(syscall_kernel_flock);
130
131 SMB_VFS_HANDLE_GET_DATA(handle, config,
132 struct gpfs_config_data,
133 return -1);
134
135 if(!config->sharemodes) {
136 return 0;
137 }
138
139 /*
140 * A named stream fsp will have the basefile open in the fsp
141 * fd, so lacking a distinct fd for the stream we have to skip
142 * kernel_flock and set_gpfs_sharemode for stream.
143 */
144 if (is_ntfs_stream_smb_fname(fsp->fsp_name) &&
145 !is_ntfs_default_stream_smb_fname(fsp->fsp_name)) {
146 DEBUG(2,("%s: kernel_flock on stream\n", fsp_str_dbg(fsp)));
147 return 0;
148 }
149
150 kernel_flock(fsp->fh->fd, share_mode, access_mask);
151
152 if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) {
153 ret = -1;
154 }
155
156 END_PROFILE(syscall_kernel_flock);
157
158 return ret;
159 }
160
161 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
162 {
163
164 struct gpfs_config_data *config;
165
166 SMB_VFS_HANDLE_GET_DATA(handle, config,
167 struct gpfs_config_data,
168 return -1);
169
170 if (config->sharemodes && (fsp->fh != NULL) && (fsp->fh->fd != -1)) {
171 set_gpfs_sharemode(fsp, 0, 0);
172 }
173
174 return SMB_VFS_NEXT_CLOSE(handle, fsp);
175 }
176
177 static int set_gpfs_lease(int fd, int leasetype)
178 {
179 int gpfs_type = GPFS_LEASE_NONE;
180
181 if (leasetype == F_RDLCK) {
182 gpfs_type = GPFS_LEASE_READ;
183 }
184 if (leasetype == F_WRLCK) {
185 gpfs_type = GPFS_LEASE_WRITE;
186 }
187
188 /* we unconditionally set CAP_LEASE, rather than looking for
189 -1/EACCES as there is a bug in some versions of
190 libgpfs_gpl.so which results in a leaked fd on /dev/ss0
191 each time we try this with the wrong capabilities set
192 */
193 linux_set_lease_capability();
194 return gpfswrap_set_lease(fd, gpfs_type);
195 }
196
197 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
198 int leasetype)
199 {
200 struct gpfs_config_data *config;
201 int ret=0;
202
203 START_PROFILE(syscall_linux_setlease);
204
205 SMB_VFS_HANDLE_GET_DATA(handle, config,
206 struct gpfs_config_data,
207 return -1);
208
209 if (linux_set_lease_sighandler(fsp->fh->fd) == -1) {
210 ret = -1;
211 goto failure;
212 }
213
214 if (config->leases) {
215 /*
216 * Ensure the lease owner is root to allow
217 * correct delivery of lease-break signals.
218 */
219 become_root();
220 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
221 unbecome_root();
222 }
223
224 failure:
225 END_PROFILE(syscall_linux_setlease);
226
227 return ret;
228 }
229
230 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
231 const char *path,
232 const char *name,
233 TALLOC_CTX *mem_ctx,
234 char **found_name)
235 {
236 int result;
237 char *full_path;
238 char real_pathname[PATH_MAX+1];
239 int buflen;
240 bool mangled;
241 struct gpfs_config_data *config;
242
243 SMB_VFS_HANDLE_GET_DATA(handle, config,
244 struct gpfs_config_data,
245 return -1);
246
247 if (!config->getrealfilename) {
248 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
249 mem_ctx, found_name);
250 }
251
252 mangled = mangle_is_mangled(name, handle->conn->params);
253 if (mangled) {
254 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
255 mem_ctx, found_name);
256 }
257
258 full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
259 if (full_path == NULL) {
260 errno = ENOMEM;
261 return -1;
262 }
263
264 buflen = sizeof(real_pathname) - 1;
265
266 result = gpfswrap_get_realfilename_path(full_path, real_pathname,
267 &buflen);
268
269 TALLOC_FREE(full_path);
270
271 if ((result == -1) && (errno == ENOSYS)) {
272 return SMB_VFS_NEXT_GET_REAL_FILENAME(
273 handle, path, name, mem_ctx, found_name);
274 }
275
276 if (result == -1) {
277 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
278 strerror(errno)));
279 return -1;
280 }
281
282 /*
283 * GPFS does not necessarily null-terminate the returned path
284 * but instead returns the buffer length in buflen.
285 */
286
287 if (buflen < sizeof(real_pathname)) {
288 real_pathname[buflen] = '\0';
289 } else {
290 real_pathname[sizeof(real_pathname)-1] = '\0';
291 }
292
293 DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
294 path, name, real_pathname));
295
296 name = strrchr_m(real_pathname, '/');
297 if (name == NULL) {
298 errno = ENOENT;
299 return -1;
300 }
301
302 *found_name = talloc_strdup(mem_ctx, name+1);
303 if (*found_name == NULL) {
304 errno = ENOMEM;
305 return -1;
306 }
307
308 return 0;
309 }
310
311 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
312 {
313 unsigned int gpfs_aclflags = 0;
314 control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
315 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
316 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
317 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
318 gpfs_aclflags = control << 8;
319 if (!(control & SEC_DESC_DACL_PRESENT))
320 gpfs_aclflags |= ACL4_FLAG_NULL_DACL;
321 if (!(control & SEC_DESC_SACL_PRESENT))
322 gpfs_aclflags |= ACL4_FLAG_NULL_SACL;
323 gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
324 gacl->v4Level1.acl_flags = gpfs_aclflags;
325 }
326
327 static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
328 {
329 uint16_t control = gpfs_aclflags >> 8;
330 control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
331 SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
332 SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
333 SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
334 control |= SEC_DESC_SELF_RELATIVE;
335 return control;
336 }
337
338 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
339 {
340 gpfs_aclCount_t i;
341 if (gacl==NULL)
342 {
343 DEBUG(0, ("gpfs acl is NULL\n"));
344 return;
345 }
346
347 DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
348 "control: %x\n",
349 gacl->acl_len, gacl->acl_level, gacl->acl_version,
350 gacl->acl_nace, gpfs_acl_flags(gacl)));
351
352 for(i=0; i<gacl->acl_nace; i++)
353 {
354 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
355 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
356 "iflags:0x%x, who:%u\n",
357 i, gace->aceType, gace->aceFlags, gace->aceMask,
358 gace->aceIFlags, gace->aceWho));
359 }
360 }
361
362 static int gpfs_getacl_with_capability(const char *fname, int flags, void *buf)
363 {
364 int ret, saved_errno;
365
366 set_effective_capability(DAC_OVERRIDE_CAPABILITY);
367
368 ret = gpfswrap_getacl(discard_const_p(char, fname), flags, buf);
369 saved_errno = errno;
370
371 drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
372
373 errno = saved_errno;
374 return ret;
375 }
376
377 /*
378 * get the ACL from GPFS, allocated on the specified mem_ctx
379 * internally retries when initial buffer was too small
380 *
381 * caller needs to cast result to either
382 * raw = yes: struct gpfs_opaque_acl
383 * raw = no: struct gpfs_acl
384 *
385 */
386 static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
387 const char *fname,
388 const bool raw,
389 const gpfs_aclType_t type)
390 {
391
392 void *aclbuf;
393 size_t size = 512;
394 int ret, flags;
395 unsigned int *len;
396 size_t struct_size;
397 bool use_capability = false;
398
399 again:
400
401 aclbuf = talloc_zero_size(mem_ctx, size);
402 if (aclbuf == NULL) {
403 errno = ENOMEM;
404 return NULL;
405 }
406
407 if (raw) {
408 struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
409 buf->acl_type = type;
410 flags = GPFS_GETACL_NATIVE;
411 len = (unsigned int *) &(buf->acl_buffer_len);
412 struct_size = sizeof(struct gpfs_opaque_acl);
413 } else {
414 struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
415 buf->acl_type = type;
416 buf->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
417 flags = GPFS_GETACL_STRUCT;
418 len = &(buf->acl_len);
419 /* reserve space for control flags in gpfs 3.5 and beyond */
420 struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
421 }
422
423 /* set the length of the buffer as input value */
424 *len = size;
425
426 if (use_capability) {
427 ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
428 } else {
429 ret = gpfswrap_getacl(discard_const_p(char, fname),
430 flags, aclbuf);
431 if ((ret != 0) && (errno == EACCES)) {
432 DBG_DEBUG("Retry with DAC capability for %s\n", fname);
433 use_capability = true;
434 ret = gpfs_getacl_with_capability(fname, flags, aclbuf);
435 }
436 }
437
438 if ((ret != 0) && (errno == ENOSPC)) {
439 /*
440 * get the size needed to accommodate the complete buffer
441 *
442 * the value returned only applies to the ACL blob in the
443 * struct so make sure to also have headroom for the first
444 * struct members by adding room for the complete struct
445 * (might be a few bytes too much then)
446 */
447 size = *len + struct_size;
448 talloc_free(aclbuf);
449 DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
450 goto again;
451 }
452
453 if (ret != 0) {
454 DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
455 strerror(errno)));
456 talloc_free(aclbuf);
457 return NULL;
458 }
459
460 return aclbuf;
461 }
462
463 /* Tries to get nfs4 acls and returns SMB ACL allocated.
464 * On failure returns 1 if it got non-NFSv4 ACL to prompt
465 * retry with POSIX ACL checks.
466 * On failure returns -1 if there is system (GPFS) error, check errno.
467 * Returns 0 on success
468 */
469 static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx, const char *fname,
470 struct SMB4ACL_T **ppacl)
471 {
472 gpfs_aclCount_t i;
473 struct gpfs_acl *gacl = NULL;
474 DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
475
476 /* Get the ACL */
477 gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname,
478 false, 0);
479 if (gacl == NULL) {
480 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
481 fname, strerror(errno)));
482 if (errno == ENODATA) {
483 /*
484 * GPFS returns ENODATA for snapshot
485 * directories. Retry with POSIX ACLs check.
486 */
487 return 1;
488 }
489
490 return -1;
491 }
492
493 if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
494 DEBUG(10, ("Got non-nfsv4 acl\n"));
495 /* Retry with POSIX ACLs check */
496 talloc_free(gacl);
497 return 1;
498 }
499
500 *ppacl = smb_create_smb4acl(mem_ctx);
501
502 if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
503 uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
504 smbacl4_set_controlflags(*ppacl, control);
505 }
506
507 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
508 gacl->acl_len, gacl->acl_level, gacl->acl_version,
509 gacl->acl_nace, gpfs_acl_flags(gacl)));
510
511 for (i=0; i<gacl->acl_nace; i++) {
512 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
513 SMB_ACE4PROP_T smbace = { 0 };
514 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
515 "who: %d\n", gace->aceType, gace->aceIFlags,
516 gace->aceFlags, gace->aceMask, gace->aceWho));
517
518 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
519 smbace.flags |= SMB_ACE4_ID_SPECIAL;
520 switch (gace->aceWho) {
521 case ACE4_SPECIAL_OWNER:
522 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
523 break;
524 case ACE4_SPECIAL_GROUP:
525 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
526 break;
527 case ACE4_SPECIAL_EVERYONE:
528 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
529 break;
530 default:
531 DEBUG(8, ("invalid special gpfs id %d "
532 "ignored\n", gace->aceWho));
533 continue; /* don't add it */
534 }
535 } else {
536 if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
537 smbace.who.gid = gace->aceWho;
538 else
539 smbace.who.uid = gace->aceWho;
540 }
541
542 /* remove redundant deny entries */
543 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
544 struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
545 if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
546 prev->aceFlags == gace->aceFlags &&
547 prev->aceIFlags == gace->aceIFlags &&
548 (gace->aceMask & prev->aceMask) == 0 &&
549 gace->aceWho == prev->aceWho) {
550 /* it's redundant - skip it */
551 continue;
552 }
553 }
554
555 smbace.aceType = gace->aceType;
556 smbace.aceFlags = gace->aceFlags;
557 smbace.aceMask = gace->aceMask;
558 smb_add_ace4(*ppacl, &smbace);
559 }
560
561 talloc_free(gacl);
562
563 return 0;
564 }
565
566 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
567 files_struct *fsp, uint32_t security_info,
568 TALLOC_CTX *mem_ctx,
569 struct security_descriptor **ppdesc)
570 {
571 struct SMB4ACL_T *pacl = NULL;
572 int result;
573 struct gpfs_config_data *config;
574 TALLOC_CTX *frame = talloc_stackframe();
575 NTSTATUS status;
576
577 *ppdesc = NULL;
578
579 SMB_VFS_HANDLE_GET_DATA(handle, config,
580 struct gpfs_config_data,
581 return NT_STATUS_INTERNAL_ERROR);
582
583 if (!config->acl) {
584 status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
585 mem_ctx, ppdesc);
586 TALLOC_FREE(frame);
587 return status;
588 }
589
590 result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl);
591
592 if (result == 0) {
593 status = smb_fget_nt_acl_nfs4(fsp, &config->nfs4_params,
594 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_fget_nt_acl(fsp, security_info,
603 mem_ctx, ppdesc);
604 TALLOC_FREE(frame);
605 return status;
606 }
607
608 TALLOC_FREE(frame);
609
610 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
611 return map_nt_error_from_unix(errno);
612 }
613
614 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
615 const struct smb_filename *smb_fname,
616 uint32_t security_info,
617 TALLOC_CTX *mem_ctx,
618 struct security_descriptor **ppdesc)
619 {
620 struct SMB4ACL_T *pacl = NULL;
621 int result;
622 struct gpfs_config_data *config;
623 TALLOC_CTX *frame = talloc_stackframe();
624 NTSTATUS status;
625
626 *ppdesc = NULL;
627
628 SMB_VFS_HANDLE_GET_DATA(handle, config,
629 struct gpfs_config_data,
630 return NT_STATUS_INTERNAL_ERROR);
631
632 if (!config->acl) {
633 status = SMB_VFS_NEXT_GET_NT_ACL(handle, smb_fname,
634 security_info,
635 mem_ctx, ppdesc);
636 TALLOC_FREE(frame);
637 return status;
638 }
639
640 result = gpfs_get_nfs4_acl(frame, smb_fname->base_name, &pacl);
641
642 if (result == 0) {
643 status = smb_get_nt_acl_nfs4(handle->conn, smb_fname,
644 &config->nfs4_params,
645 security_info, mem_ctx, ppdesc,
646 pacl);
647 TALLOC_FREE(frame);
648 return status;
649 }
650
651 if (result > 0) {
652 DEBUG(10, ("retrying with posix acl...\n"));
653 status = posix_get_nt_acl(handle->conn, smb_fname,
654 security_info, mem_ctx, ppdesc);
655 TALLOC_FREE(frame);
656 return status;
657 }
658
659 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
660 TALLOC_FREE(frame);
661 return map_nt_error_from_unix(errno);
662 }
663
664 static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
665 files_struct *fsp,
666 struct SMB4ACL_T *smbacl,
667 bool controlflags)
668 {
669 struct gpfs_acl *gacl;
670 gpfs_aclLen_t gacl_len;
671 struct SMB4ACE_T *smbace;
672
673 gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
674 + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
675
676 gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
677 if (gacl == NULL) {
678 DEBUG(0, ("talloc failed\n"));
679 errno = ENOMEM;
680 return NULL;
681 }
682
683 gacl->acl_level = GPFS_ACL_LEVEL_BASE;
684 gacl->acl_version = GPFS_ACL_VERSION_NFS4;
685 gacl->acl_type = GPFS_ACL_TYPE_NFS4;
686 gacl->acl_nace = 0; /* change later... */
687
688 if (controlflags) {
689 gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
690 sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
691 }
692
693 for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
694 struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
695 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
696
697 gace->aceType = aceprop->aceType;
698 gace->aceFlags = aceprop->aceFlags;
699 gace->aceMask = aceprop->aceMask;
700
701 /*
702 * GPFS can't distinguish between WRITE and APPEND on
703 * files, so one being set without the other is an
704 * error. Sorry for the many ()'s :-)
705 */
706
707 if (!fsp->is_directory
708 &&
709 ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
710 && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
711 ||
712 (((gace->aceMask & ACE4_MASK_WRITE) != 0)
713 && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
714 &&
715 lp_parm_bool(fsp->conn->params->service, "gpfs",
716 "merge_writeappend", True)) {
717 DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
718 "WRITE^APPEND, setting WRITE|APPEND\n",
719 fsp_str_dbg(fsp)));
720 gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
721 }
722
723 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
724
725 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
726 {
727 switch(aceprop->who.special_id)
728 {
729 case SMB_ACE4_WHO_EVERYONE:
730 gace->aceWho = ACE4_SPECIAL_EVERYONE;
731 break;
732 case SMB_ACE4_WHO_OWNER:
733 gace->aceWho = ACE4_SPECIAL_OWNER;
734 break;
735 case SMB_ACE4_WHO_GROUP:
736 gace->aceWho = ACE4_SPECIAL_GROUP;
737 break;
738 default:
739 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
740 continue; /* don't add it !!! */
741 }
742 } else {
743 /* just only for the type safety... */
744 if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
745 gace->aceWho = aceprop->who.gid;
746 else
747 gace->aceWho = aceprop->who.uid;
748 }
749
750 gacl->acl_nace++;
751 }
752 gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
753 - (char *)gacl;
754 return gacl;
755 }
756
757 static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
758 files_struct *fsp,
759 struct SMB4ACL_T *smbacl)
760 {
761 int ret;
762 struct gpfs_acl *gacl;
763 TALLOC_CTX *mem_ctx = talloc_tos();
764
765 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
766 if (gacl == NULL) { /* out of memory */
767 return False;
768 }
769 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
770 GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
771
772 if ((ret != 0) && (errno == EINVAL)) {
773 DEBUG(10, ("Retry without nfs41 control flags\n"));
774 talloc_free(gacl);
775 gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
776 if (gacl == NULL) { /* out of memory */
777 return False;
778 }
779 ret = gpfswrap_putacl(fsp->fsp_name->base_name,
780 GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
781 gacl);
782 }
783
784 if (ret != 0) {
785 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
786 gpfs_dumpacl(8, gacl);
787 return False;
788 }
789
790 DEBUG(10, ("gpfs_putacl succeeded\n"));
791 return True;
792 }
793
794 static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
795 {
796 struct gpfs_acl *acl;
797 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
798
799 acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
800 fsp->fsp_name->base_name,
801 false, 0);
802 if (acl == NULL) {
803 return map_nt_error_from_unix(errno);
804 }
805
806 if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
807 struct gpfs_config_data *config;
808
809 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
810 "refuse_dacl_protected", false)
811 && (psd->type&SEC_DESC_DACL_PROTECTED)) {
812 DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
813 talloc_free(acl);
814 return NT_STATUS_NOT_SUPPORTED;
815 }
816
817 SMB_VFS_HANDLE_GET_DATA(handle, config,
818 struct gpfs_config_data,
819 return NT_STATUS_INTERNAL_ERROR);
820
821 result = smb_set_nt_acl_nfs4(handle,
822 fsp, &config->nfs4_params, security_info_sent, psd,
823 gpfsacl_process_smbacl);
824 } else { /* assume POSIX ACL - by default... */
825 result = set_nt_acl(fsp, security_info_sent, psd);
826 }
827
828 talloc_free(acl);
829 return result;
830 }
831
832 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
833 {
834 struct gpfs_config_data *config;
835
836 SMB_VFS_HANDLE_GET_DATA(handle, config,
837 struct gpfs_config_data,
838 return NT_STATUS_INTERNAL_ERROR);
839
840 if (!config->acl) {
841 return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
842 }
843
844 return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
845 }
846
847 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
848 {
849 SMB_ACL_T result;
850 gpfs_aclCount_t i;
851
852 result = sys_acl_init(mem_ctx);
853 if (result == NULL) {
854 errno = ENOMEM;
855 return NULL;
856 }
857
858 result->count = pacl->acl_nace;
859 result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
860 result->count);
861 if (result->acl == NULL) {
862 TALLOC_FREE(result);
863 errno = ENOMEM;
864 return NULL;
865 }
866
867 for (i=0; i<pacl->acl_nace; i++) {
868 struct smb_acl_entry *ace = &result->acl[i];
869 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
870
871 DEBUG(10, ("Converting type %d id %lu perm %x\n",
872 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
873 (int)g_ace->ace_perm));
874
875 switch (g_ace->ace_type) {
876 case GPFS_ACL_USER:
877 ace->a_type = SMB_ACL_USER;
878 ace->info.user.uid = (uid_t)g_ace->ace_who;
879 break;
880 case GPFS_ACL_USER_OBJ:
881 ace->a_type = SMB_ACL_USER_OBJ;
882 break;
883 case GPFS_ACL_GROUP:
884 ace->a_type = SMB_ACL_GROUP;
885 ace->info.group.gid = (gid_t)g_ace->ace_who;
886 break;
887 case GPFS_ACL_GROUP_OBJ:
888 ace->a_type = SMB_ACL_GROUP_OBJ;
889 break;
890 case GPFS_ACL_OTHER:
891 ace->a_type = SMB_ACL_OTHER;
892 break;
893 case GPFS_ACL_MASK:
894 ace->a_type = SMB_ACL_MASK;
895 break;
896 default:
897 DEBUG(10, ("Got invalid ace_type: %d\n",
898 g_ace->ace_type));
899 TALLOC_FREE(result);
900 errno = EINVAL;
901 return NULL;
902 }
903
904 ace->a_perm = 0;
905 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
906 SMB_ACL_READ : 0;
907 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
908 SMB_ACL_WRITE : 0;
909 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
910 SMB_ACL_EXECUTE : 0;
911
912 DEBUGADD(10, ("Converted to %d perm %x\n",
913 ace->a_type, ace->a_perm));
914 }
915
916 return result;
917 }
918
919 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type,
920 TALLOC_CTX *mem_ctx)
921 {
922 struct gpfs_acl *pacl;
923 SMB_ACL_T result = NULL;
924
925 pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type);
926
927 if (pacl == NULL) {
928 DEBUG(10, ("vfs_gpfs_getacl failed for %s with %s\n",
929 path, strerror(errno)));
930 if (errno == 0) {
931 errno = EINVAL;
932 }
933 goto done;
934 }
935
936 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
937 DEBUG(10, ("Got acl version %d, expected %d\n",
938 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
939 errno = EINVAL;
940 goto done;
941 }
942
943 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
944 pacl->acl_len, pacl->acl_level, pacl->acl_version,
945 pacl->acl_nace));
946
947 result = gpfs2smb_acl(pacl, mem_ctx);
948 if (result != NULL) {
949 errno = 0;
950 }
951
952 done:
953
954 if (pacl != NULL) {
955 talloc_free(pacl);
956 }
957 if (errno != 0) {
958 TALLOC_FREE(result);
959 }
960 return result;
961 }
962
963 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
964 const char *path_p,
965 SMB_ACL_TYPE_T type,
966 TALLOC_CTX *mem_ctx)
967 {
968 gpfs_aclType_t gpfs_type;
969 struct gpfs_config_data *config;
970
971 SMB_VFS_HANDLE_GET_DATA(handle, config,
972 struct gpfs_config_data,
973 return NULL);
974
975 if (!config->acl) {
976 return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p,
977 type, mem_ctx);
978 }
979
980 switch(type) {
981 case SMB_ACL_TYPE_ACCESS:
982 gpfs_type = GPFS_ACL_TYPE_ACCESS;
983 break;
984 case SMB_ACL_TYPE_DEFAULT:
985 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
986 break;
987 default:
988 DEBUG(0, ("Got invalid type: %d\n", type));
989 smb_panic("exiting");
990 }
991
992 return gpfsacl_get_posix_acl(path_p, gpfs_type, mem_ctx);
993 }
994
995 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
996 files_struct *fsp,
997 TALLOC_CTX *mem_ctx)
998 {
999 struct gpfs_config_data *config;
1000
1001 SMB_VFS_HANDLE_GET_DATA(handle, config,
1002 struct gpfs_config_data,
1003 return NULL);
1004
1005 if (!config->acl) {
1006 return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
1007 }
1008
1009 return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
1010 GPFS_ACL_TYPE_ACCESS, mem_ctx);
1011 }
1012
1013 static int gpfsacl_sys_acl_blob_get_file(vfs_handle_struct *handle,
1014 const char *path_p,
1015 TALLOC_CTX *mem_ctx,
1016 char **blob_description,
1017 DATA_BLOB *blob)
1018 {
1019 struct gpfs_config_data *config;
1020 struct gpfs_opaque_acl *acl = NULL;
1021 DATA_BLOB aclblob;
1022 int result;
1023
1024 SMB_VFS_HANDLE_GET_DATA(handle, config,
1025 struct gpfs_config_data,
1026 return -1);
1027
1028 if (!config->acl) {
1029 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p,
1030 mem_ctx,
1031 blob_description,
1032 blob);
1033 }
1034
1035 errno = 0;
1036 acl = (struct gpfs_opaque_acl *)
1037 vfs_gpfs_getacl(mem_ctx,
1038 path_p,
1039 true,
1040 GPFS_ACL_TYPE_NFS4);
1041
1042 if (errno) {
1043 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1044 errno, strerror(errno)));
1045
1046 /* EINVAL means POSIX ACL, bail out on other cases */
1047 if (errno != EINVAL) {
1048 return -1;
1049 }
1050 }
1051
1052 if (acl != NULL) {
1053 /*
1054 * file has NFSv4 ACL
1055 *
1056 * we only need the actual ACL blob here
1057 * acl_version will always be NFS4 because we asked
1058 * for NFS4
1059 * acl_type is only used for POSIX ACLs
1060 */
1061 aclblob.data = (uint8_t*) acl->acl_var_data;
1062 aclblob.length = acl->acl_buffer_len;
1063
1064 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1065 if (!*blob_description) {
1066 talloc_free(acl);
1067 errno = ENOMEM;
1068 return -1;
1069 }
1070
1071 result = non_posix_sys_acl_blob_get_file_helper(handle, path_p,
1072 aclblob,
1073 mem_ctx, blob);
1074
1075 talloc_free(acl);
1076 return result;
1077 }
1078
1079 /* fall back to POSIX ACL */
1080 return posix_sys_acl_blob_get_file(handle, path_p, mem_ctx,
1081 blob_description, blob);
1082 }
1083
1084 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1085 files_struct *fsp,
1086 TALLOC_CTX *mem_ctx,
1087 char **blob_description,
1088 DATA_BLOB *blob)
1089 {
1090 struct gpfs_config_data *config;
1091 struct gpfs_opaque_acl *acl = NULL;
1092 DATA_BLOB aclblob;
1093 int result;
1094
1095 SMB_VFS_HANDLE_GET_DATA(handle, config,
1096 struct gpfs_config_data,
1097 return -1);
1098
1099 if (!config->acl) {
1100 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1101 blob_description, blob);
1102 }
1103
1104 errno = 0;
1105 acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1106 fsp->fsp_name->base_name,
1107 true,
1108 GPFS_ACL_TYPE_NFS4);
1109
1110 if (errno) {
1111 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1112 errno, strerror(errno)));
1113
1114 /* EINVAL means POSIX ACL, bail out on other cases */
1115 if (errno != EINVAL) {
1116 return -1;
1117 }
1118 }
1119
1120 if (acl != NULL) {
1121 /*
1122 * file has NFSv4 ACL
1123 *
1124 * we only need the actual ACL blob here
1125 * acl_version will always be NFS4 because we asked
1126 * for NFS4
1127 * acl_type is only used for POSIX ACLs
1128 */
1129 aclblob.data = (uint8_t*) acl->acl_var_data;
1130 aclblob.length = acl->acl_buffer_len;
1131
1132 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1133 if (!*blob_description) {
1134 talloc_free(acl);
1135 errno = ENOMEM;
1136 return -1;
1137 }
1138
1139 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1140 aclblob, mem_ctx,
1141 blob);
1142
1143 talloc_free(acl);
1144 return result;
1145 }
1146
1147 /* fall back to POSIX ACL */
1148 return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1149 blob_description, blob);
1150 }
1151
1152 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1153 SMB_ACL_TYPE_T type)
1154 {
1155 gpfs_aclLen_t len;
1156 struct gpfs_acl *result;
1157 int i;
1158
1159 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1160
1161 len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1162 sizeof(gpfs_ace_v1_t);
1163
1164 result = (struct gpfs_acl *)SMB_MALLOC(len);
1165 if (result == NULL) {
1166 errno = ENOMEM;
1167 return result;
1168 }
1169
1170 result->acl_len = len;
1171 result->acl_level = 0;
1172 result->acl_version = GPFS_ACL_VERSION_POSIX;
1173 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1174 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1175 result->acl_nace = pacl->count;
1176
1177 for (i=0; i<pacl->count; i++) {
1178 const struct smb_acl_entry *ace = &pacl->acl[i];
1179 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1180
1181 DEBUG(10, ("Converting type %d perm %x\n",
1182 (int)ace->a_type, (int)ace->a_perm));
1183
1184 g_ace->ace_perm = 0;
1185
1186 switch(ace->a_type) {
1187 case SMB_ACL_USER:
1188 g_ace->ace_type = GPFS_ACL_USER;
1189 g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1190 break;
1191 case SMB_ACL_USER_OBJ:
1192 g_ace->ace_type = GPFS_ACL_USER_OBJ;
1193 g_ace->ace_perm |= ACL_PERM_CONTROL;
1194 g_ace->ace_who = 0;
1195 break;
1196 case SMB_ACL_GROUP:
1197 g_ace->ace_type = GPFS_ACL_GROUP;
1198 g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1199 break;
1200 case SMB_ACL_GROUP_OBJ:
1201 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1202 g_ace->ace_who = 0;
1203 break;
1204 case SMB_ACL_MASK:
1205 g_ace->ace_type = GPFS_ACL_MASK;
1206 g_ace->ace_perm = 0x8f;
1207 g_ace->ace_who = 0;
1208 break;
1209 case SMB_ACL_OTHER:
1210 g_ace->ace_type = GPFS_ACL_OTHER;
1211 g_ace->ace_who = 0;
1212 break;
1213 default:
1214 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1215 errno = EINVAL;
1216 SAFE_FREE(result);
1217 return NULL;
1218 }
1219
1220 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1221 ACL_PERM_READ : 0;
1222 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1223 ACL_PERM_WRITE : 0;
1224 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1225 ACL_PERM_EXECUTE : 0;
1226
1227 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1228 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1229 }
1230
1231 return result;
1232 }
1233
1234 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
1235 const char *name,
1236 SMB_ACL_TYPE_T type,
1237 SMB_ACL_T theacl)
1238 {
1239 struct gpfs_acl *gpfs_acl;
1240 int result;
1241 struct gpfs_config_data *config;
1242
1243 SMB_VFS_HANDLE_GET_DATA(handle, config,
1244 struct gpfs_config_data,
1245 return -1);
1246
1247 if (!config->acl) {
1248 return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, type, theacl);
1249 }
1250
1251 gpfs_acl = smb2gpfs_acl(theacl, type);
1252 if (gpfs_acl == NULL) {
1253 return -1;
1254 }
1255
1256 result = gpfswrap_putacl(discard_const_p(char, name),
1257 GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA, gpfs_acl);
1258
1259 SAFE_FREE(gpfs_acl);
1260 return result;
1261 }
1262
1263 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1264 files_struct *fsp,
1265 SMB_ACL_T theacl)
1266 {
1267 struct gpfs_config_data *config;
1268
1269 SMB_VFS_HANDLE_GET_DATA(handle, config,
1270 struct gpfs_config_data,
1271 return -1);
1272
1273 if (!config->acl) {
1274 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
1275 }
1276
1277 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
1278 SMB_ACL_TYPE_ACCESS, theacl);
1279 }
1280
1281 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
1282 const char *path)
1283 {
1284 struct gpfs_config_data *config;
1285
1286 SMB_VFS_HANDLE_GET_DATA(handle, config,
1287 struct gpfs_config_data,
1288 return -1);
1289
1290 if (!config->acl) {
1291 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, path);
1292 }
1293
1294 errno = ENOTSUP;
1295 return -1;
1296 }
1297
1298 /*
1299 * Assumed: mode bits are shiftable and standard
1300 * Output: the new aceMask field for an smb nfs4 ace
1301 */
1302 static uint32_t gpfsacl_mask_filter(uint32_t aceType, uint32_t aceMask, uint32_t rwx)
1303 {
1304 const uint32_t posix_nfs4map[3] = {
1305 SMB_ACE4_EXECUTE, /* execute */
1306 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1307 SMB_ACE4_READ_DATA /* read */
1308 };
1309 int i;
1310 uint32_t posix_mask = 0x01;
1311 uint32_t posix_bit;
1312 uint32_t nfs4_bits;
1313
1314 for(i=0; i<3; i++) {
1315 nfs4_bits = posix_nfs4map[i];
1316 posix_bit = rwx & posix_mask;
1317
1318 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1319 if (posix_bit)
1320 aceMask |= nfs4_bits;
1321 else
1322 aceMask &= ~nfs4_bits;
1323 } else {
1324 /* add deny bits when suitable */
1325 if (!posix_bit)
1326 aceMask |= nfs4_bits;
1327 else
1328 aceMask &= ~nfs4_bits;
1329 } /* other ace types are unexpected */
1330
1331 posix_mask <<= 1;
1332 }
1333
1334 return aceMask;
1335 }
1336
1337 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1338 const char *path, mode_t mode)
1339 {
1340 struct SMB4ACL_T *pacl = NULL;
1341 int result;
1342 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1343 int i;
1344 files_struct fake_fsp = { 0 }; /* TODO: rationalize parametrization */
1345 struct SMB4ACE_T *smbace;
1346 TALLOC_CTX *frame = talloc_stackframe();
1347
1348 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1349
1350 result = gpfs_get_nfs4_acl(frame, path, &pacl);
1351 if (result) {
1352 TALLOC_FREE(frame);
1353 return result;
1354 }
1355
1356 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1357 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1358 }
1359
1360 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1361 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
1362 uint32_t specid = ace->who.special_id;
1363
1364 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1365 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1366 specid <= SMB_ACE4_WHO_EVERYONE) {
1367
1368 uint32_t newMask;
1369
1370 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1371 haveAllowEntry[specid] = True;
1372
1373 /* mode >> 6 for @owner, mode >> 3 for @group,
1374 * mode >> 0 for @everyone */
1375 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1376 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1377 if (ace->aceMask!=newMask) {
1378 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1379 path, ace->aceMask, newMask, specid));
1380 }
1381 ace->aceMask = newMask;
1382 }
1383 }
1384
1385 /* make sure we have at least ALLOW entries
1386 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1387 * - if necessary
1388 */
1389 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1390 SMB_ACE4PROP_T ace = { 0 };
1391
1392 if (haveAllowEntry[i]==True)
1393 continue;
1394
1395 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1396 ace.flags |= SMB_ACE4_ID_SPECIAL;
1397 ace.who.special_id = i;
1398
1399 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1400 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1401
1402 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1403 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1404
1405 /* don't add unnecessary aces */
1406 if (!ace.aceMask)
1407 continue;
1408
1409 /* we add it to the END - as windows expects allow aces */
1410 smb_add_ace4(pacl, &ace);
1411 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1412 path, mode, i, ace.aceMask));
1413 }
1414
1415 /* don't add complementary DENY ACEs here */
1416 fake_fsp.fsp_name = synthetic_smb_fname(
1417 frame, path, NULL, NULL, 0);
1418 if (fake_fsp.fsp_name == NULL) {
1419 errno = ENOMEM;
1420 TALLOC_FREE(frame);
1421 return -1;
1422 }
1423 /* put the acl */
1424 if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1425 TALLOC_FREE(frame);
1426 return -1;
1427 }
1428
1429 TALLOC_FREE(frame);
1430 return 0; /* ok for [f]chmod */
1431 }
1432
1433 static int vfs_gpfs_chmod(vfs_handle_struct *handle,
1434 const struct smb_filename *smb_fname,
1435 mode_t mode)
1436 {
1437 struct smb_filename *smb_fname_cpath;
1438 int rc;
1439
1440 smb_fname_cpath = cp_smb_filename(talloc_tos(), smb_fname);
1441 if (smb_fname_cpath == NULL) {
1442 errno = ENOMEM;
1443 return -1;
1444 }
1445
1446 if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
1447 TALLOC_FREE(smb_fname_cpath);
1448 return -1;
1449 }
1450
1451 /* avoid chmod() if possible, to preserve acls */
1452 if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
1453 TALLOC_FREE(smb_fname_cpath);
1454 return 0;
1455 }
1456
1457 rc = gpfsacl_emu_chmod(handle, smb_fname->base_name, mode);
1458 if (rc == 1)
1459 return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
1460
1461 TALLOC_FREE(smb_fname_cpath);
1462 return rc;
1463 }
1464
1465 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1466 {
1467 SMB_STRUCT_STAT st;
1468 int rc;
1469
1470 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1471 return -1;
1472 }
1473
1474 /* avoid chmod() if possible, to preserve acls */
1475 if ((st.st_ex_mode & ~S_IFMT) == mode) {
1476 return 0;
1477 }
1478
1479 rc = gpfsacl_emu_chmod(handle, fsp->fsp_name->base_name,
1480 mode);
1481 if (rc == 1)
1482 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1483 return rc;
1484 }
1485
1486 static uint32_t vfs_gpfs_winattrs_to_dosmode(unsigned int winattrs)
1487 {
1488 uint32_t dosmode = 0;
1489
1490 if (winattrs & GPFS_WINATTR_ARCHIVE){
1491 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1492 }
1493 if (winattrs & GPFS_WINATTR_HIDDEN){
1494 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1495 }
1496 if (winattrs & GPFS_WINATTR_SYSTEM){
1497 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1498 }
1499 if (winattrs & GPFS_WINATTR_READONLY){
1500 dosmode |= FILE_ATTRIBUTE_READONLY;
1501 }
1502 if (winattrs & GPFS_WINATTR_SPARSE_FILE) {
1503 dosmode |= FILE_ATTRIBUTE_SPARSE;
1504 }
1505 if (winattrs & GPFS_WINATTR_OFFLINE) {
1506 dosmode |= FILE_ATTRIBUTE_OFFLINE;
1507 }
1508
1509 return dosmode;
1510 }
1511
1512 static unsigned int vfs_gpfs_dosmode_to_winattrs(uint32_t dosmode)
1513 {
1514 unsigned int winattrs = 0;
1515
1516 if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1517 winattrs |= GPFS_WINATTR_ARCHIVE;
1518 }
1519 if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1520 winattrs |= GPFS_WINATTR_HIDDEN;
1521 }
1522 if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1523 winattrs |= GPFS_WINATTR_SYSTEM;
1524 }
1525 if (dosmode & FILE_ATTRIBUTE_READONLY){
1526 winattrs |= GPFS_WINATTR_READONLY;
1527 }
1528 if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1529 winattrs |= GPFS_WINATTR_SPARSE_FILE;
1530 }
1531 if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
1532 winattrs |= GPFS_WINATTR_OFFLINE;
1533 }
1534
1535 return winattrs;
1536 }
1537
1538 static NTSTATUS vfs_gpfs_get_dos_attributes(struct vfs_handle_struct *handle,
1539 struct smb_filename *smb_fname,
1540 uint32_t *dosmode)
1541 {
1542 struct gpfs_config_data *config;
1543 struct gpfs_winattr attrs = { };
1544 int ret;
1545
1546 SMB_VFS_HANDLE_GET_DATA(handle, config,
1547 struct gpfs_config_data,
1548 return NT_STATUS_INTERNAL_ERROR);
1549
1550 if (!config->winattr) {
1551 return SMB_VFS_NEXT_GET_DOS_ATTRIBUTES(handle,
1552 smb_fname, dosmode);
1553 }
1554
1555 ret = gpfswrap_get_winattrs_path(smb_fname->base_name, &attrs);
1556 if (ret == -1 && errno == ENOSYS) {
1557 return SMB_VFS_NEXT_GET_DOS_ATTRIBUTES(handle, smb_fname,
1558 dosmode);
1559 }
1560
1561 if (ret == -1) {
1562 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1563 smb_fname->base_name, strerror(errno));
1564 return map_nt_error_from_unix(errno);
1565 }
1566
1567 *dosmode |= vfs_gpfs_winattrs_to_dosmode(attrs.winAttrs);
1568 smb_fname->st.st_ex_calculated_birthtime = false;
1569 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1570 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1571
1572 return NT_STATUS_OK;
1573 }
1574
1575 static NTSTATUS vfs_gpfs_fget_dos_attributes(struct vfs_handle_struct *handle,
1576 struct files_struct *fsp,
1577 uint32_t *dosmode)
1578 {
1579 struct gpfs_config_data *config;
1580 struct gpfs_winattr attrs = { };
1581 int ret;
1582
1583 SMB_VFS_HANDLE_GET_DATA(handle, config,
1584 struct gpfs_config_data,
1585 return NT_STATUS_INTERNAL_ERROR);
1586
1587 if (!config->winattr) {
1588 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1589 }
1590
1591 ret = gpfswrap_get_winattrs(fsp->fh->fd, &attrs);
1592 if (ret == -1 && errno == ENOSYS) {
1593 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1594 }
1595
1596 if (ret == -1) {
1597 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1598 fsp->fsp_name->base_name, strerror(errno));
1599 return map_nt_error_from_unix(errno);
1600 }
1601
1602 *dosmode |= vfs_gpfs_winattrs_to_dosmode(attrs.winAttrs);
1603 fsp->fsp_name->st.st_ex_calculated_birthtime = false;
1604 fsp->fsp_name->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1605 fsp->fsp_name->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1606
1607 return NT_STATUS_OK;
1608 }
1609
1610 static NTSTATUS vfs_gpfs_set_dos_attributes(struct vfs_handle_struct *handle,
1611 const struct smb_filename *smb_fname,
1612 uint32_t dosmode)
1613 {
1614 struct gpfs_config_data *config;
1615 struct gpfs_winattr attrs = { };
1616 int ret;
1617
1618 SMB_VFS_HANDLE_GET_DATA(handle, config,
1619 struct gpfs_config_data,
1620 return NT_STATUS_INTERNAL_ERROR);
1621
1622 if (!config->winattr) {
1623 return SMB_VFS_NEXT_SET_DOS_ATTRIBUTES(handle,
1624 smb_fname, dosmode);
1625 }
1626
1627 attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1628 ret = gpfswrap_set_winattrs_path(smb_fname->base_name,
1629 GPFS_WINATTR_SET_ATTRS, &attrs);
1630
1631 if (ret == -1 && errno == ENOSYS) {
1632 return SMB_VFS_NEXT_SET_DOS_ATTRIBUTES(handle,
1633 smb_fname, dosmode);
1634 }
1635
1636 if (ret == -1) {
1637 DBG_WARNING("Setting winattrs failed for %s: %s\n",
1638 smb_fname->base_name, strerror(errno));
1639 return map_nt_error_from_unix(errno);
1640 }
1641
1642 return NT_STATUS_OK;
1643 }
1644
1645 static NTSTATUS vfs_gpfs_fset_dos_attributes(struct vfs_handle_struct *handle,
1646 struct files_struct *fsp,
1647 uint32_t dosmode)
1648 {
1649 struct gpfs_config_data *config;
1650 struct gpfs_winattr attrs = { };
1651 int ret;
1652
1653 SMB_VFS_HANDLE_GET_DATA(handle, config,
1654 struct gpfs_config_data,
1655 return NT_STATUS_INTERNAL_ERROR);
1656
1657 if (!config->winattr) {
1658 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1659 }
1660
1661 attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1662 ret = gpfswrap_set_winattrs(fsp->fh->fd,
1663 GPFS_WINATTR_SET_ATTRS, &attrs);
1664
1665 if (ret == -1 && errno == ENOSYS) {
1666 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1667 }
1668
1669 if (ret == -1) {
1670 DBG_WARNING("Setting winattrs failed for %s: %s\n",
1671 fsp->fsp_name->base_name, strerror(errno));
1672 return map_nt_error_from_unix(errno);
1673 }
1674
1675 return NT_STATUS_OK;
1676 }
1677
1678 static int stat_with_capability(struct vfs_handle_struct *handle,
1679 struct smb_filename *smb_fname, int flag)
1680 {
1681 #if defined(HAVE_FSTATAT)
1682 int fd = -1;
1683 bool b;
1684 char *dir_name;
1685 const char *rel_name = NULL;
1686 struct stat st;
1687 int ret = -1;
1688
1689 b = parent_dirname(talloc_tos(), smb_fname->base_name,
1690 &dir_name, &rel_name);
1691 if (!b) {
1692 errno = ENOMEM;
1693 return -1;
1694 }
1695
1696 fd = open(dir_name, O_RDONLY, 0);
1697 TALLOC_FREE(dir_name);
1698 if (fd == -1) {
1699 return -1;
1700 }
1701
1702 set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1703 ret = fstatat(fd, rel_name, &st, flag);
1704 drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1705
1706 close(fd);
1707
1708 if (ret == 0) {
1709 init_stat_ex_from_stat(
1710 &smb_fname->st, &st,
1711 lp_fake_directory_create_times(SNUM(handle->conn)));
1712 }
1713
1714 return ret;
1715 #else
1716 return -1;
1717 #endif
1718 }
1719
1720 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1721 struct smb_filename *smb_fname)
1722 {
1723 int ret;
1724 struct gpfs_config_data *config;
1725
1726 SMB_VFS_HANDLE_GET_DATA(handle, config,
1727 struct gpfs_config_data,
1728 return -1);
1729
1730 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1731 if (ret == -1 && errno == EACCES) {
1732 DEBUG(10, ("Trying stat with capability for %s\n",
1733 smb_fname->base_name));
1734 ret = stat_with_capability(handle, smb_fname, 0);
1735 }
1736 return ret;
1737 }
1738
1739 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1740 struct smb_filename *smb_fname)
1741 {
1742 int ret;
1743 struct gpfs_config_data *config;
1744
1745 SMB_VFS_HANDLE_GET_DATA(handle, config,
1746 struct gpfs_config_data,
1747 return -1);
1748
1749 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1750 if (ret == -1 && errno == EACCES) {
1751 DEBUG(10, ("Trying lstat with capability for %s\n",
1752 smb_fname->base_name));
1753 ret = stat_with_capability(handle, smb_fname,
1754 AT_SYMLINK_NOFOLLOW);
1755 }
1756 return ret;
1757 }
1758
1759 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1760 int idx, int *flags)
1761 {
1762 if (!null_timespec(ts)) {
1763 *flags |= 1 << idx;
1764 gt[idx].tv_sec = ts.tv_sec;
1765 gt[idx].tv_nsec = ts.tv_nsec;
1766 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1767 }
1768 }
1769
1770 static int smbd_gpfs_set_times_path(char *path, struct smb_file_time *ft)
1771 {
1772 gpfs_timestruc_t gpfs_times[4];
1773 int flags = 0;
1774 int rc;
1775
1776 ZERO_ARRAY(gpfs_times);
1777 timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1778 timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1779 /* No good mapping from LastChangeTime to ctime, not storing */
1780 timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1781
1782 if (!flags) {
1783 DEBUG(10, ("nothing to do, return to avoid EINVAL\n"));
1784 return 0;
1785 }
1786
1787 rc = gpfswrap_set_times_path(path, flags, gpfs_times);
1788
1789 if (rc != 0 && errno != ENOSYS) {
1790 DEBUG(1,("gpfs_set_times() returned with error %s\n",
1791 strerror(errno)));
1792 }
1793
1794 return rc;
1795 }
1796
1797 static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
1798 const struct smb_filename *smb_fname,
1799 struct smb_file_time *ft)
1800 {
1801
1802 struct gpfs_winattr attrs;
1803 int ret;
1804 char *path = NULL;
1805 NTSTATUS status;
1806 struct gpfs_config_data *config;
1807
1808 SMB_VFS_HANDLE_GET_DATA(handle, config,
1809 struct gpfs_config_data,
1810 return -1);
1811
1812 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1813 if (!NT_STATUS_IS_OK(status)) {
1814 errno = map_errno_from_nt_status(status);
1815 return -1;
1816 }
1817
1818 /* Try to use gpfs_set_times if it is enabled and available */
1819 if (config->settimes) {
1820 ret = smbd_gpfs_set_times_path(path, ft);
1821
1822 if (ret == 0 || (ret == -1 && errno != ENOSYS)) {
1823 return ret;
1824 }
1825 }
1826
1827 DEBUG(10,("gpfs_set_times() not available or disabled, "
1828 "use ntimes and winattr\n"));
1829
1830 ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1831 if(ret == -1){
1832 /* don't complain if access was denied */
1833 if (errno != EPERM && errno != EACCES) {
1834 DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed:"
1835 "%s", strerror(errno)));
1836 }
1837 return -1;
1838 }
1839
1840 if(null_timespec(ft->create_time)){
1841 DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
1842 return 0;
1843 }
1844
1845 if (!config->winattr) {
1846 return 0;
1847 }
1848
1849 attrs.winAttrs = 0;
1850 attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1851 attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1852
1853 ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1854 GPFS_WINATTR_SET_CREATION_TIME,
1855 &attrs);
1856 if(ret == -1 && errno != ENOSYS){
1857 DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
1858 return -1;
1859 }
1860 return 0;
1861
1862 }
1863
1864 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1865 struct files_struct *fsp, uint32_t mode,
1866 off_t offset, off_t len)
1867 {
1868 int ret;
1869 struct gpfs_config_data *config;
1870
1871 SMB_VFS_HANDLE_GET_DATA(handle, config,
1872 struct gpfs_config_data,
1873 return -1);
1874
1875 if (!config->prealloc) {
1876 /* you should better not run fallocate() on GPFS at all */
1877 errno = ENOTSUP;
1878 return -1;
1879 }
1880
1881 if (mode != 0) {
1882 DEBUG(10, ("unmapped fallocate flags: %lx\n",
1883 (unsigned long)mode));
1884 errno = ENOTSUP;
1885 return -1;
1886 }
1887
1888 ret = gpfswrap_prealloc(fsp->fh->fd, offset, len);
1889
1890 if (ret == -1 && errno != ENOSYS) {
1891 DEBUG(0, ("GPFS prealloc failed: %s\n", strerror(errno)));
1892 } else if (ret == -1 && errno == ENOSYS) {
1893 DEBUG(10, ("GPFS prealloc not supported.\n"));
1894 } else {
1895 DEBUG(10, ("GPFS prealloc succeeded.\n"));
1896 }
1897
1898 return ret;
1899 }
1900
1901 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1902 off_t len)
1903 {
1904 int result;
1905 struct gpfs_config_data *config;
1906
1907 SMB_VFS_HANDLE_GET_DATA(handle, config,
1908 struct gpfs_config_data,
1909 return -1);
1910
1911 if (!config->ftruncate) {
1912 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1913 }
1914
1915 result = gpfswrap_ftruncate(fsp->fh->fd, len);
1916 if ((result == -1) && (errno == ENOSYS)) {
1917 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1918 }
1919 return result;
1920 }
1921
1922 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1923 const struct smb_filename *fname,
1924 SMB_STRUCT_STAT *sbuf)
1925 {
1926 struct gpfs_winattr attrs;
1927 char *path = NULL;
1928 NTSTATUS status;
1929 struct gpfs_config_data *config;
1930 int ret;
1931
1932 SMB_VFS_HANDLE_GET_DATA(handle, config,
1933 struct gpfs_config_data,
1934 return -1);
1935
1936 if (!config->winattr) {
1937 return false;
1938 }
1939
1940 status = get_full_smb_filename(talloc_tos(), fname, &path);
1941 if (!NT_STATUS_IS_OK(status)) {
1942 return false;
1943 }
1944
1945 ret = gpfswrap_get_winattrs_path(path, &attrs);
1946 if (ret == -1) {
1947 TALLOC_FREE(path);
1948 return false;
1949 }
1950
1951 if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1952 DEBUG(10, ("%s is offline\n", path));
1953 TALLOC_FREE(path);
1954 return true;
1955 }
1956 DEBUG(10, ("%s is online\n", path));
1957 TALLOC_FREE(path);
1958 return false;
1959 }
1960
1961 static bool vfs_gpfs_fsp_is_offline(struct vfs_handle_struct *handle,
1962 struct files_struct *fsp)
1963 {
1964 struct gpfs_fsp_extension *ext;
1965
1966 ext = VFS_FETCH_FSP_EXTENSION(handle, fsp);
1967 if (ext == NULL) {
1968 /*
1969 * Something bad happened, always ask.
1970 */
1971 return vfs_gpfs_is_offline(handle, fsp->fsp_name,
1972 &fsp->fsp_name->st);
1973 }
1974
1975 if (ext->offline) {
1976 /*
1977 * As long as it's offline, ask.
1978 */
1979 ext->offline = vfs_gpfs_is_offline(handle, fsp->fsp_name,
1980 &fsp->fsp_name->st);
1981 }
1982
1983 return ext->offline;
1984 }
1985
1986 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1987 struct files_struct *fsp)
1988 {
1989 return vfs_gpfs_fsp_is_offline(handle, fsp);
1990 }
1991
1992 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1993 files_struct *fsp, const DATA_BLOB *hdr,
1994 off_t offset, size_t n)
1995 {
1996 if (vfs_gpfs_fsp_is_offline(handle, fsp)) {
1997 errno = ENOSYS;
1998 return -1;
1999 }
2000 return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
2001 }
2002
2003 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
2004 const char *service, const char *user)
2005 {
2006 struct gpfs_config_data *config;
2007 int ret;
2008
2009 gpfswrap_lib_init(0);
2010
2011 config = talloc_zero(handle->conn, struct gpfs_config_data);
2012 if (!config) {
2013 DEBUG(0, ("talloc_zero() failed\n"));
2014 errno = ENOMEM;
2015 return -1;
2016 }
2017
2018 ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
2019 if (ret < 0) {
2020 TALLOC_FREE(config);
2021 return ret;
2022 }
2023
2024 ret = smbacl4_get_vfs_params(handle->conn, &config->nfs4_params);
2025 if (ret < 0) {
2026 TALLOC_FREE(config);
2027 return ret;
2028 }
2029
2030 config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2031 "sharemodes", true);
2032
2033 config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
2034 "leases", true);
2035
2036 config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
2037 "hsm", false);
2038
2039 config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
2040 "syncio", false);
2041
2042 config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
2043 "winattr", false);
2044
2045 config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
2046 "ftruncate", true);
2047
2048 config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
2049 "getrealfilename", true);
2050
2051 config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
2052 "dfreequota", false);
2053
2054 config->prealloc = lp_parm_bool(SNUM(handle->conn), "gpfs",
2055 "prealloc", true);
2056
2057 config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
2058
2059 config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2060 "settimes", true);
2061 config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
2062 "recalls", true);
2063
2064 SMB_VFS_HANDLE_SET_DATA(handle, config,
2065 NULL, struct gpfs_config_data,
2066 return -1);
2067
2068 if (config->leases) {
2069 /*
2070 * GPFS lease code is based on kernel oplock code
2071 * so make sure it is turned on
2072 */
2073 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
2074 DEBUG(5, ("Enabling kernel oplocks for "
2075 "gpfs:leases to work\n"));
2076 lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
2077 "true");
2078 }
2079
2080 /*
2081 * as the kernel does not properly support Level II oplocks
2082 * and GPFS leases code is based on kernel infrastructure, we
2083 * need to turn off Level II oplocks if gpfs:leases is enabled
2084 */
2085 if (lp_level2_oplocks(SNUM(handle->conn))) {
2086 DEBUG(5, ("gpfs:leases are enabled, disabling "
2087 "Level II oplocks\n"));
2088 lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
2089 "false");
2090 }
2091 }
2092
2093 return 0;
2094 }
2095
2096 static int get_gpfs_quota(const char *pathname, int type, int id,
2097 struct gpfs_quotaInfo *qi)
2098 {
2099 int ret;
2100
2101 ret = gpfswrap_quotactl(discard_const_p(char, pathname),
2102 GPFS_QCMD(Q_GETQUOTA, type), id, qi);
2103
2104 if (ret) {
2105 if (errno == GPFS_E_NO_QUOTA_INST) {
2106 DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
2107 } else if (errno != ENOSYS) {
2108 DEBUG(0, ("Get quota failed, type %d, id, %d, "
2109 "errno %d.\n", type, id, errno));
2110 }
2111
2112 return ret;
2113 }
2114
2115 DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2116 type, id, qi->blockUsage, qi->blockHardLimit,
2117 qi->blockSoftLimit, qi->blockGraceTime));
2118
2119 return ret;
2120 }
2121
2122 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2123 uint64_t *dfree, uint64_t *dsize)
2124 {
2125 uint64_t usage, limit;
2126
2127 /*
2128 * The quota reporting is done in units of 1024 byte blocks, but
2129 * sys_fsusage uses units of 512 byte blocks, adjust the block number
2130 * accordingly. Also filter possibly negative usage counts from gpfs.
2131 */
2132 usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2133 limit = (uint64_t)qi.blockHardLimit * 2;
2134
2135 /*
2136 * When the grace time for the exceeded soft block quota has been
2137 * exceeded, the soft block quota becomes an additional hard limit.
2138 */
2139 if (qi.blockSoftLimit &&
2140 qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2141 /* report disk as full */
2142 *dfree = 0;
2143 *dsize = MIN(*dsize, usage);
2144 }
2145
2146 if (!qi.blockHardLimit)
2147 return;
2148
2149 if (usage >= limit) {
2150 /* report disk as full */
2151 *dfree = 0;
2152 *dsize = MIN(*dsize, usage);
2153
2154 } else {
2155 /* limit has not been reached, determine "free space" */
2156 *dfree = MIN(*dfree, limit - usage);
2157 *dsize = MIN(*dsize, limit);
2158 }
2159 }
2160
2161 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle, const char *path,
2162 uint64_t *bsize,
2163 uint64_t *dfree, uint64_t *dsize)
2164 {
2165 struct security_unix_token *utok;
2166 struct gpfs_quotaInfo qi_user = { 0 }, qi_group = { 0 };
2167 struct gpfs_config_data *config;
2168 int err;
2169 time_t cur_time;
2170
2171 SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2172 return (uint64_t)-1);
2173 if (!config->dfreequota) {
2174 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2175 bsize, dfree, dsize);
2176 }
2177
2178 err = sys_fsusage(path, dfree, dsize);
2179 if (err) {
2180 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2181 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2182 bsize, dfree, dsize);
2183 }
2184
2185 /* sys_fsusage returns units of 512 bytes */
2186 *bsize = 512;
2187
2188 DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2189 (unsigned long long)*dfree, (unsigned long long)*dsize));
2190
2191 utok = handle->conn->session_info->unix_token;
2192
2193 err = get_gpfs_quota(path, GPFS_USRQUOTA, utok->uid, &qi_user);
2194 if (err) {
2195 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2196 bsize, dfree, dsize);
2197 }
2198
2199 err = get_gpfs_quota(path, GPFS_GRPQUOTA, utok->gid, &qi_group);
2200 if (err) {
2201 return SMB_VFS_NEXT_DISK_FREE(handle, path,
2202 bsize, dfree, dsize);
2203 }
2204
2205 cur_time = time(NULL);
2206
2207 /* Adjust free space and size according to quota limits. */
2208 vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2209 vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2210
2211 return *dfree / 2;
2212 }
2213
2214 static int vfs_gpfs_get_quota(vfs_handle_struct *handle, const char *path,
2215 enum SMB_QUOTA_TYPE qtype, unid_t id,
2216 SMB_DISK_QUOTA *dq)
2217 {
2218 switch(qtype) {
2219 /*
2220 * User/group quota are being used for disk-free
2221 * determination, which in this module is done directly
2222 * by the disk-free function. It's important that this
2223 * module does not return wrong quota values by mistake,
2224 * which would modify the correct values set by disk-free.
2225 * User/group quota are also being used for processing
2226 * NT_TRANSACT_GET_USER_QUOTA in smb1 protocol, which is
2227 * currently not supported by this module.
2228 */
2229 case SMB_USER_QUOTA_TYPE:
2230 case SMB_GROUP_QUOTA_TYPE:
2231 errno = ENOSYS;
2232 return -1;
2233 default:
2234 return SMB_VFS_NEXT_GET_QUOTA(handle, path, qtype, id, dq);
2235 }
2236 }
2237
2238 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2239 enum timestamp_set_resolution *p_ts_res)
2240 {
2241 struct gpfs_config_data *config;
2242 uint32_t next;
2243
2244 next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2245
2246 SMB_VFS_HANDLE_GET_DATA(handle, config,
2247 struct gpfs_config_data,
2248 return next);
2249
2250 if (config->hsm) {
2251 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2252 }
2253 return next;
2254 }
2255
2256 static int vfs_gpfs_open(struct vfs_handle_struct *handle,
2257 struct smb_filename *smb_fname, files_struct *fsp,
2258 int flags, mode_t mode)
2259 {
2260 struct gpfs_config_data *config;
2261 int ret;
2262 struct gpfs_fsp_extension *ext;
2263
2264 SMB_VFS_HANDLE_GET_DATA(handle, config,
2265 struct gpfs_config_data,
2266 return -1);
2267
2268 if (config->hsm && !config->recalls &&
2269 vfs_gpfs_fsp_is_offline(handle, fsp)) {
2270 DEBUG(10, ("Refusing access to offline file %s\n",
2271 fsp_str_dbg(fsp)));
2272 errno = EACCES;
2273 return -1;
2274 }
2275
2276 if (config->syncio) {
2277 flags |= O_SYNC;
2278 }
2279
2280 ext = VFS_ADD_FSP_EXTENSION(handle, fsp, struct gpfs_fsp_extension,
2281 NULL);
2282 if (ext == NULL) {
2283 errno = ENOMEM;
2284 return -1;
2285 }
2286
2287 /*
2288 * Assume the file is offline until gpfs tells us it's online.
2289 */
2290 *ext = (struct gpfs_fsp_extension) { .offline = true };
2291
2292 ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
2293 if (ret == -1) {
2294 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
2295 }
2296 return ret;
2297 }
2298
2299 static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
2300 void *data, size_t n, off_t offset)
2301 {
2302 ssize_t ret;
2303 bool was_offline;
2304
2305 was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2306
2307 ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2308
2309 if ((ret != -1) && was_offline) {
2310 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2311 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2312 fsp->fsp_name->base_name);
2313 }
2314
2315 return ret;
2316 }
2317
2318 struct vfs_gpfs_pread_state {
2319 struct files_struct *fsp;
2320 ssize_t ret;
2321 bool was_offline;
2322 struct vfs_aio_state vfs_aio_state;
2323 };
2324
2325 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2326
2327 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2328 TALLOC_CTX *mem_ctx,
2329 struct tevent_context *ev,
2330 struct files_struct *fsp,
2331 void *data, size_t n,
2332 off_t offset)
2333 {
2334 struct tevent_req *req, *subreq;
2335 struct vfs_gpfs_pread_state *state;
2336
2337 req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2338 if (req == NULL) {
2339 return NULL;
2340 }
2341 state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2342 state->fsp = fsp;
2343 subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2344 n, offset);
2345 if (tevent_req_nomem(subreq, req)) {
2346 return tevent_req_post(req, ev);
2347 }
2348 tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2349 return req;
2350 }
2351
2352 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2353 {
2354 struct tevent_req *req = tevent_req_callback_data(
2355 subreq, struct tevent_req);
2356 struct vfs_gpfs_pread_state *state = tevent_req_data(
2357 req, struct vfs_gpfs_pread_state);
2358
2359 state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
2360 TALLOC_FREE(subreq);
2361 tevent_req_done(req);
2362 }
2363
2364 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req,
2365 struct vfs_aio_state *vfs_aio_state)
2366 {
2367 struct vfs_gpfs_pread_state *state = tevent_req_data(
2368 req, struct vfs_gpfs_pread_state);
2369 struct files_struct *fsp = state->fsp;
2370
2371 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2372 return -1;
2373 }
2374 *vfs_aio_state = state->vfs_aio_state;
2375
2376 if ((state->ret != -1) && state->was_offline) {
2377 DEBUG(10, ("sending notify\n"));
2378 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2379 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2380 fsp->fsp_name->base_name);
2381 }
2382
2383 return state->ret;
2384 }
2385
2386 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2387 const void *data, size_t n, off_t offset)
2388 {
2389 ssize_t ret;
2390 bool was_offline;
2391
2392 was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2393
2394 ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2395
2396 if ((ret != -1) && was_offline) {
2397 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2398 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2399 fsp->fsp_name->base_name);
2400 }
2401
2402 return ret;
2403 }
2404
2405 struct vfs_gpfs_pwrite_state {
2406 struct files_struct *fsp;
2407 ssize_t ret;
2408 bool was_offline;
2409 struct vfs_aio_state vfs_aio_state;
2410 };
2411
2412 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2413
2414 static struct tevent_req *vfs_gpfs_pwrite_send(
2415 struct vfs_handle_struct *handle,
2416 TALLOC_CTX *mem_ctx,
2417 struct tevent_context *ev,
2418 struct files_struct *fsp,
2419 const void *data, size_t n,
2420 off_t offset)
2421 {
2422 struct tevent_req *req, *subreq;
2423 struct vfs_gpfs_pwrite_state *state;
2424
2425 req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2426 if (req == NULL) {
2427 return NULL;
2428 }
2429 state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2430 state->fsp = fsp;
2431 subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2432 n, offset);
2433 if (tevent_req_nomem(subreq, req)) {
2434 return tevent_req_post(req, ev);
2435 }
2436 tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2437 return req;
2438 }
2439
2440 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2441 {
2442 struct tevent_req *req = tevent_req_callback_data(
2443 subreq, struct tevent_req);
2444 struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2445 req, struct vfs_gpfs_pwrite_state);
2446
2447 state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
2448 TALLOC_FREE(subreq);
2449 tevent_req_done(req);
2450 }
2451
2452 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req,
2453 struct vfs_aio_state *vfs_aio_state)
2454 {
2455 struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2456 req, struct vfs_gpfs_pwrite_state);
2457 struct files_struct *fsp = state->fsp;
2458
2459 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2460 return -1;
2461 }
2462 *vfs_aio_state = state->vfs_aio_state;
2463
2464 if ((state->ret != -1) && state->was_offline) {
2465 DEBUG(10, ("sending notify\n"));
2466 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2467 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2468 fsp->fsp_name->base_name);
2469 }
2470
2471 return state->ret;
2472 }
2473
2474
2475 static struct vfs_fn_pointers vfs_gpfs_fns = {
2476 .connect_fn = vfs_gpfs_connect,
2477 .disk_free_fn = vfs_gpfs_disk_free,
2478 .get_quota_fn = vfs_gpfs_get_quota,
2479 .fs_capabilities_fn = vfs_gpfs_capabilities,
2480 .kernel_flock_fn = vfs_gpfs_kernel_flock,
2481 .linux_setlease_fn = vfs_gpfs_setlease,
2482 .get_real_filename_fn = vfs_gpfs_get_real_filename,
2483 .get_dos_attributes_fn = vfs_gpfs_get_dos_attributes,
2484 .fget_dos_attributes_fn = vfs_gpfs_fget_dos_attributes,
2485 .set_dos_attributes_fn = vfs_gpfs_set_dos_attributes,
2486 .fset_dos_attributes_fn = vfs_gpfs_fset_dos_attributes,
2487 .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2488 .get_nt_acl_fn = gpfsacl_get_nt_acl,
2489 .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2490 .sys_acl_get_file_fn = gpfsacl_sys_acl_get_file,
2491 .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2492 .sys_acl_blob_get_file_fn = gpfsacl_sys_acl_blob_get_file,
2493 .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2494 .sys_acl_set_file_fn = gpfsacl_sys_acl_set_file,
2495 .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2496 .sys_acl_delete_def_file_fn = gpfsacl_sys_acl_delete_def_file,
2497 .chmod_fn = vfs_gpfs_chmod,
2498 .fchmod_fn = vfs_gpfs_fchmod,
2499 .close_fn = vfs_gpfs_close,
2500 .stat_fn = vfs_gpfs_stat,
2501 .lstat_fn = vfs_gpfs_lstat,
2502 .ntimes_fn = vfs_gpfs_ntimes,
2503 .aio_force_fn = vfs_gpfs_aio_force,
2504 .sendfile_fn = vfs_gpfs_sendfile,
2505 .fallocate_fn = vfs_gpfs_fallocate,
2506 .open_fn = vfs_gpfs_open,
2507 .pread_fn = vfs_gpfs_pread,
2508 .pread_send_fn = vfs_gpfs_pread_send,
2509 .pread_recv_fn = vfs_gpfs_pread_recv,
2510 .pwrite_fn = vfs_gpfs_pwrite,
2511 .pwrite_send_fn = vfs_gpfs_pwrite_send,
2512 .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2513 .ftruncate_fn = vfs_gpfs_ftruncate
2514 };
2515
2516 NTSTATUS vfs_gpfs_init(void);
2517 NTSTATUS vfs_gpfs_init(void)
2518 {
2519 int ret;
2520
2521 ret = gpfswrap_init();
2522 if (ret != 0) {
2523 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2524 }
2525
2526 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2527 &vfs_gpfs_fns);
2528 }
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