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s3:selftest: run samba3.blackbox.inherit_owner tests with NT1 and SMB3
[Samba.git] / source3 / modules / vfs_gpfs.c
bloba552cdda4d95809f41785b3eb18d9545b78a53e8
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 struct smb_filename *smb_fname,
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, smb_fname,
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(smb_fname->base_name, 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 struct smb_filename *smb_fname,
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 const char *path_p = smb_fname->base_name;
1024
1025 SMB_VFS_HANDLE_GET_DATA(handle, config,
1026 struct gpfs_config_data,
1027 return -1);
1028
1029 if (!config->acl) {
1030 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, smb_fname,
1031 mem_ctx,
1032 blob_description,
1033 blob);
1034 }
1035
1036 errno = 0;
1037 acl = (struct gpfs_opaque_acl *)
1038 vfs_gpfs_getacl(mem_ctx,
1039 path_p,
1040 true,
1041 GPFS_ACL_TYPE_NFS4);
1042
1043 if (errno) {
1044 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1045 errno, strerror(errno)));
1046
1047 /* EINVAL means POSIX ACL, bail out on other cases */
1048 if (errno != EINVAL) {
1049 return -1;
1050 }
1051 }
1052
1053 if (acl != NULL) {
1054 /*
1055 * file has NFSv4 ACL
1056 *
1057 * we only need the actual ACL blob here
1058 * acl_version will always be NFS4 because we asked
1059 * for NFS4
1060 * acl_type is only used for POSIX ACLs
1061 */
1062 aclblob.data = (uint8_t*) acl->acl_var_data;
1063 aclblob.length = acl->acl_buffer_len;
1064
1065 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1066 if (!*blob_description) {
1067 talloc_free(acl);
1068 errno = ENOMEM;
1069 return -1;
1070 }
1071
1072 result = non_posix_sys_acl_blob_get_file_helper(handle, smb_fname,
1073 aclblob,
1074 mem_ctx, blob);
1075
1076 talloc_free(acl);
1077 return result;
1078 }
1079
1080 /* fall back to POSIX ACL */
1081 return posix_sys_acl_blob_get_file(handle, smb_fname, mem_ctx,
1082 blob_description, blob);
1083 }
1084
1085 static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1086 files_struct *fsp,
1087 TALLOC_CTX *mem_ctx,
1088 char **blob_description,
1089 DATA_BLOB *blob)
1090 {
1091 struct gpfs_config_data *config;
1092 struct gpfs_opaque_acl *acl = NULL;
1093 DATA_BLOB aclblob;
1094 int result;
1095
1096 SMB_VFS_HANDLE_GET_DATA(handle, config,
1097 struct gpfs_config_data,
1098 return -1);
1099
1100 if (!config->acl) {
1101 return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1102 blob_description, blob);
1103 }
1104
1105 errno = 0;
1106 acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
1107 fsp->fsp_name->base_name,
1108 true,
1109 GPFS_ACL_TYPE_NFS4);
1110
1111 if (errno) {
1112 DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
1113 errno, strerror(errno)));
1114
1115 /* EINVAL means POSIX ACL, bail out on other cases */
1116 if (errno != EINVAL) {
1117 return -1;
1118 }
1119 }
1120
1121 if (acl != NULL) {
1122 /*
1123 * file has NFSv4 ACL
1124 *
1125 * we only need the actual ACL blob here
1126 * acl_version will always be NFS4 because we asked
1127 * for NFS4
1128 * acl_type is only used for POSIX ACLs
1129 */
1130 aclblob.data = (uint8_t*) acl->acl_var_data;
1131 aclblob.length = acl->acl_buffer_len;
1132
1133 *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
1134 if (!*blob_description) {
1135 talloc_free(acl);
1136 errno = ENOMEM;
1137 return -1;
1138 }
1139
1140 result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
1141 aclblob, mem_ctx,
1142 blob);
1143
1144 talloc_free(acl);
1145 return result;
1146 }
1147
1148 /* fall back to POSIX ACL */
1149 return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
1150 blob_description, blob);
1151 }
1152
1153 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
1154 SMB_ACL_TYPE_T type)
1155 {
1156 gpfs_aclLen_t len;
1157 struct gpfs_acl *result;
1158 int i;
1159
1160 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
1161
1162 len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
1163 sizeof(gpfs_ace_v1_t);
1164
1165 result = (struct gpfs_acl *)SMB_MALLOC(len);
1166 if (result == NULL) {
1167 errno = ENOMEM;
1168 return result;
1169 }
1170
1171 result->acl_len = len;
1172 result->acl_level = 0;
1173 result->acl_version = GPFS_ACL_VERSION_POSIX;
1174 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
1175 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
1176 result->acl_nace = pacl->count;
1177
1178 for (i=0; i<pacl->count; i++) {
1179 const struct smb_acl_entry *ace = &pacl->acl[i];
1180 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
1181
1182 DEBUG(10, ("Converting type %d perm %x\n",
1183 (int)ace->a_type, (int)ace->a_perm));
1184
1185 g_ace->ace_perm = 0;
1186
1187 switch(ace->a_type) {
1188 case SMB_ACL_USER:
1189 g_ace->ace_type = GPFS_ACL_USER;
1190 g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
1191 break;
1192 case SMB_ACL_USER_OBJ:
1193 g_ace->ace_type = GPFS_ACL_USER_OBJ;
1194 g_ace->ace_perm |= ACL_PERM_CONTROL;
1195 g_ace->ace_who = 0;
1196 break;
1197 case SMB_ACL_GROUP:
1198 g_ace->ace_type = GPFS_ACL_GROUP;
1199 g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
1200 break;
1201 case SMB_ACL_GROUP_OBJ:
1202 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
1203 g_ace->ace_who = 0;
1204 break;
1205 case SMB_ACL_MASK:
1206 g_ace->ace_type = GPFS_ACL_MASK;
1207 g_ace->ace_perm = 0x8f;
1208 g_ace->ace_who = 0;
1209 break;
1210 case SMB_ACL_OTHER:
1211 g_ace->ace_type = GPFS_ACL_OTHER;
1212 g_ace->ace_who = 0;
1213 break;
1214 default:
1215 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
1216 errno = EINVAL;
1217 SAFE_FREE(result);
1218 return NULL;
1219 }
1220
1221 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
1222 ACL_PERM_READ : 0;
1223 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
1224 ACL_PERM_WRITE : 0;
1225 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
1226 ACL_PERM_EXECUTE : 0;
1227
1228 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
1229 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
1230 }
1231
1232 return result;
1233 }
1234
1235 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
1236 const struct smb_filename *smb_fname,
1237 SMB_ACL_TYPE_T type,
1238 SMB_ACL_T theacl)
1239 {
1240 struct gpfs_acl *gpfs_acl;
1241 int result;
1242 struct gpfs_config_data *config;
1243
1244 SMB_VFS_HANDLE_GET_DATA(handle, config,
1245 struct gpfs_config_data,
1246 return -1);
1247
1248 if (!config->acl) {
1249 return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, smb_fname,
1250 type, theacl);
1251 }
1252
1253 gpfs_acl = smb2gpfs_acl(theacl, type);
1254 if (gpfs_acl == NULL) {
1255 return -1;
1256 }
1257
1258 result = gpfswrap_putacl(discard_const_p(char, smb_fname->base_name),
1259 GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA, gpfs_acl);
1260
1261 SAFE_FREE(gpfs_acl);
1262 return result;
1263 }
1264
1265 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
1266 files_struct *fsp,
1267 SMB_ACL_T theacl)
1268 {
1269 struct gpfs_config_data *config;
1270
1271 SMB_VFS_HANDLE_GET_DATA(handle, config,
1272 struct gpfs_config_data,
1273 return -1);
1274
1275 if (!config->acl) {
1276 return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
1277 }
1278
1279 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name,
1280 SMB_ACL_TYPE_ACCESS, theacl);
1281 }
1282
1283 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
1284 const struct smb_filename *smb_fname)
1285 {
1286 struct gpfs_config_data *config;
1287
1288 SMB_VFS_HANDLE_GET_DATA(handle, config,
1289 struct gpfs_config_data,
1290 return -1);
1291
1292 if (!config->acl) {
1293 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, smb_fname);
1294 }
1295
1296 errno = ENOTSUP;
1297 return -1;
1298 }
1299
1300 /*
1301 * Assumed: mode bits are shiftable and standard
1302 * Output: the new aceMask field for an smb nfs4 ace
1303 */
1304 static uint32_t gpfsacl_mask_filter(uint32_t aceType, uint32_t aceMask, uint32_t rwx)
1305 {
1306 const uint32_t posix_nfs4map[3] = {
1307 SMB_ACE4_EXECUTE, /* execute */
1308 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
1309 SMB_ACE4_READ_DATA /* read */
1310 };
1311 int i;
1312 uint32_t posix_mask = 0x01;
1313 uint32_t posix_bit;
1314 uint32_t nfs4_bits;
1315
1316 for(i=0; i<3; i++) {
1317 nfs4_bits = posix_nfs4map[i];
1318 posix_bit = rwx & posix_mask;
1319
1320 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
1321 if (posix_bit)
1322 aceMask |= nfs4_bits;
1323 else
1324 aceMask &= ~nfs4_bits;
1325 } else {
1326 /* add deny bits when suitable */
1327 if (!posix_bit)
1328 aceMask |= nfs4_bits;
1329 else
1330 aceMask &= ~nfs4_bits;
1331 } /* other ace types are unexpected */
1332
1333 posix_mask <<= 1;
1334 }
1335
1336 return aceMask;
1337 }
1338
1339 static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
1340 const char *path, mode_t mode)
1341 {
1342 struct SMB4ACL_T *pacl = NULL;
1343 int result;
1344 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
1345 int i;
1346 files_struct fake_fsp = { 0 }; /* TODO: rationalize parametrization */
1347 struct SMB4ACE_T *smbace;
1348 TALLOC_CTX *frame = talloc_stackframe();
1349
1350 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
1351
1352 result = gpfs_get_nfs4_acl(frame, path, &pacl);
1353 if (result) {
1354 TALLOC_FREE(frame);
1355 return result;
1356 }
1357
1358 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
1359 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
1360 }
1361
1362 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
1363 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
1364 uint32_t specid = ace->who.special_id;
1365
1366 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
1367 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
1368 specid <= SMB_ACE4_WHO_EVERYONE) {
1369
1370 uint32_t newMask;
1371
1372 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
1373 haveAllowEntry[specid] = True;
1374
1375 /* mode >> 6 for @owner, mode >> 3 for @group,
1376 * mode >> 0 for @everyone */
1377 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
1378 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
1379 if (ace->aceMask!=newMask) {
1380 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
1381 path, ace->aceMask, newMask, specid));
1382 }
1383 ace->aceMask = newMask;
1384 }
1385 }
1386
1387 /* make sure we have at least ALLOW entries
1388 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
1389 * - if necessary
1390 */
1391 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
1392 SMB_ACE4PROP_T ace = { 0 };
1393
1394 if (haveAllowEntry[i]==True)
1395 continue;
1396
1397 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
1398 ace.flags |= SMB_ACE4_ID_SPECIAL;
1399 ace.who.special_id = i;
1400
1401 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
1402 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
1403
1404 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
1405 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
1406
1407 /* don't add unnecessary aces */
1408 if (!ace.aceMask)
1409 continue;
1410
1411 /* we add it to the END - as windows expects allow aces */
1412 smb_add_ace4(pacl, &ace);
1413 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
1414 path, mode, i, ace.aceMask));
1415 }
1416
1417 /* don't add complementary DENY ACEs here */
1418 fake_fsp.fsp_name = synthetic_smb_fname(
1419 frame, path, NULL, NULL, 0);
1420 if (fake_fsp.fsp_name == NULL) {
1421 errno = ENOMEM;
1422 TALLOC_FREE(frame);
1423 return -1;
1424 }
1425 /* put the acl */
1426 if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
1427 TALLOC_FREE(frame);
1428 return -1;
1429 }
1430
1431 TALLOC_FREE(frame);
1432 return 0; /* ok for [f]chmod */
1433 }
1434
1435 static int vfs_gpfs_chmod(vfs_handle_struct *handle,
1436 const struct smb_filename *smb_fname,
1437 mode_t mode)
1438 {
1439 struct smb_filename *smb_fname_cpath;
1440 int rc;
1441
1442 smb_fname_cpath = cp_smb_filename(talloc_tos(), smb_fname);
1443 if (smb_fname_cpath == NULL) {
1444 errno = ENOMEM;
1445 return -1;
1446 }
1447
1448 if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
1449 TALLOC_FREE(smb_fname_cpath);
1450 return -1;
1451 }
1452
1453 /* avoid chmod() if possible, to preserve acls */
1454 if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
1455 TALLOC_FREE(smb_fname_cpath);
1456 return 0;
1457 }
1458
1459 rc = gpfsacl_emu_chmod(handle, smb_fname->base_name, mode);
1460 if (rc == 1)
1461 return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
1462
1463 TALLOC_FREE(smb_fname_cpath);
1464 return rc;
1465 }
1466
1467 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1468 {
1469 SMB_STRUCT_STAT st;
1470 int rc;
1471
1472 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
1473 return -1;
1474 }
1475
1476 /* avoid chmod() if possible, to preserve acls */
1477 if ((st.st_ex_mode & ~S_IFMT) == mode) {
1478 return 0;
1479 }
1480
1481 rc = gpfsacl_emu_chmod(handle, fsp->fsp_name->base_name,
1482 mode);
1483 if (rc == 1)
1484 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1485 return rc;
1486 }
1487
1488 static uint32_t vfs_gpfs_winattrs_to_dosmode(unsigned int winattrs)
1489 {
1490 uint32_t dosmode = 0;
1491
1492 if (winattrs & GPFS_WINATTR_ARCHIVE){
1493 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1494 }
1495 if (winattrs & GPFS_WINATTR_HIDDEN){
1496 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1497 }
1498 if (winattrs & GPFS_WINATTR_SYSTEM){
1499 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1500 }
1501 if (winattrs & GPFS_WINATTR_READONLY){
1502 dosmode |= FILE_ATTRIBUTE_READONLY;
1503 }
1504 if (winattrs & GPFS_WINATTR_SPARSE_FILE) {
1505 dosmode |= FILE_ATTRIBUTE_SPARSE;
1506 }
1507 if (winattrs & GPFS_WINATTR_OFFLINE) {
1508 dosmode |= FILE_ATTRIBUTE_OFFLINE;
1509 }
1510
1511 return dosmode;
1512 }
1513
1514 static unsigned int vfs_gpfs_dosmode_to_winattrs(uint32_t dosmode)
1515 {
1516 unsigned int winattrs = 0;
1517
1518 if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
1519 winattrs |= GPFS_WINATTR_ARCHIVE;
1520 }
1521 if (dosmode & FILE_ATTRIBUTE_HIDDEN){
1522 winattrs |= GPFS_WINATTR_HIDDEN;
1523 }
1524 if (dosmode & FILE_ATTRIBUTE_SYSTEM){
1525 winattrs |= GPFS_WINATTR_SYSTEM;
1526 }
1527 if (dosmode & FILE_ATTRIBUTE_READONLY){
1528 winattrs |= GPFS_WINATTR_READONLY;
1529 }
1530 if (dosmode & FILE_ATTRIBUTE_SPARSE) {
1531 winattrs |= GPFS_WINATTR_SPARSE_FILE;
1532 }
1533 if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
1534 winattrs |= GPFS_WINATTR_OFFLINE;
1535 }
1536
1537 return winattrs;
1538 }
1539
1540 static NTSTATUS vfs_gpfs_get_dos_attributes(struct vfs_handle_struct *handle,
1541 struct smb_filename *smb_fname,
1542 uint32_t *dosmode)
1543 {
1544 struct gpfs_config_data *config;
1545 struct gpfs_winattr attrs = { };
1546 int ret;
1547
1548 SMB_VFS_HANDLE_GET_DATA(handle, config,
1549 struct gpfs_config_data,
1550 return NT_STATUS_INTERNAL_ERROR);
1551
1552 if (!config->winattr) {
1553 return SMB_VFS_NEXT_GET_DOS_ATTRIBUTES(handle,
1554 smb_fname, dosmode);
1555 }
1556
1557 ret = gpfswrap_get_winattrs_path(smb_fname->base_name, &attrs);
1558 if (ret == -1 && errno == ENOSYS) {
1559 return SMB_VFS_NEXT_GET_DOS_ATTRIBUTES(handle, smb_fname,
1560 dosmode);
1561 }
1562
1563 if (ret == -1) {
1564 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1565 smb_fname->base_name, strerror(errno));
1566 return map_nt_error_from_unix(errno);
1567 }
1568
1569 *dosmode |= vfs_gpfs_winattrs_to_dosmode(attrs.winAttrs);
1570 smb_fname->st.st_ex_calculated_birthtime = false;
1571 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1572 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1573
1574 return NT_STATUS_OK;
1575 }
1576
1577 static NTSTATUS vfs_gpfs_fget_dos_attributes(struct vfs_handle_struct *handle,
1578 struct files_struct *fsp,
1579 uint32_t *dosmode)
1580 {
1581 struct gpfs_config_data *config;
1582 struct gpfs_winattr attrs = { };
1583 int ret;
1584
1585 SMB_VFS_HANDLE_GET_DATA(handle, config,
1586 struct gpfs_config_data,
1587 return NT_STATUS_INTERNAL_ERROR);
1588
1589 if (!config->winattr) {
1590 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1591 }
1592
1593 ret = gpfswrap_get_winattrs(fsp->fh->fd, &attrs);
1594 if (ret == -1 && errno == ENOSYS) {
1595 return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1596 }
1597
1598 if (ret == -1) {
1599 DBG_WARNING("Getting winattrs failed for %s: %s\n",
1600 fsp->fsp_name->base_name, strerror(errno));
1601 return map_nt_error_from_unix(errno);
1602 }
1603
1604 *dosmode |= vfs_gpfs_winattrs_to_dosmode(attrs.winAttrs);
1605 fsp->fsp_name->st.st_ex_calculated_birthtime = false;
1606 fsp->fsp_name->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1607 fsp->fsp_name->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1608
1609 return NT_STATUS_OK;
1610 }
1611
1612 static NTSTATUS vfs_gpfs_set_dos_attributes(struct vfs_handle_struct *handle,
1613 const struct smb_filename *smb_fname,
1614 uint32_t dosmode)
1615 {
1616 struct gpfs_config_data *config;
1617 struct gpfs_winattr attrs = { };
1618 int ret;
1619
1620 SMB_VFS_HANDLE_GET_DATA(handle, config,
1621 struct gpfs_config_data,
1622 return NT_STATUS_INTERNAL_ERROR);
1623
1624 if (!config->winattr) {
1625 return SMB_VFS_NEXT_SET_DOS_ATTRIBUTES(handle,
1626 smb_fname, dosmode);
1627 }
1628
1629 attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1630 ret = gpfswrap_set_winattrs_path(smb_fname->base_name,
1631 GPFS_WINATTR_SET_ATTRS, &attrs);
1632
1633 if (ret == -1 && errno == ENOSYS) {
1634 return SMB_VFS_NEXT_SET_DOS_ATTRIBUTES(handle,
1635 smb_fname, dosmode);
1636 }
1637
1638 if (ret == -1) {
1639 DBG_WARNING("Setting winattrs failed for %s: %s\n",
1640 smb_fname->base_name, strerror(errno));
1641 return map_nt_error_from_unix(errno);
1642 }
1643
1644 return NT_STATUS_OK;
1645 }
1646
1647 static NTSTATUS vfs_gpfs_fset_dos_attributes(struct vfs_handle_struct *handle,
1648 struct files_struct *fsp,
1649 uint32_t dosmode)
1650 {
1651 struct gpfs_config_data *config;
1652 struct gpfs_winattr attrs = { };
1653 int ret;
1654
1655 SMB_VFS_HANDLE_GET_DATA(handle, config,
1656 struct gpfs_config_data,
1657 return NT_STATUS_INTERNAL_ERROR);
1658
1659 if (!config->winattr) {
1660 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1661 }
1662
1663 attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
1664 ret = gpfswrap_set_winattrs(fsp->fh->fd,
1665 GPFS_WINATTR_SET_ATTRS, &attrs);
1666
1667 if (ret == -1 && errno == ENOSYS) {
1668 return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
1669 }
1670
1671 if (ret == -1) {
1672 DBG_WARNING("Setting winattrs failed for %s: %s\n",
1673 fsp->fsp_name->base_name, strerror(errno));
1674 return map_nt_error_from_unix(errno);
1675 }
1676
1677 return NT_STATUS_OK;
1678 }
1679
1680 static int stat_with_capability(struct vfs_handle_struct *handle,
1681 struct smb_filename *smb_fname, int flag)
1682 {
1683 #if defined(HAVE_FSTATAT)
1684 int fd = -1;
1685 bool b;
1686 char *dir_name;
1687 const char *rel_name = NULL;
1688 struct stat st;
1689 int ret = -1;
1690
1691 b = parent_dirname(talloc_tos(), smb_fname->base_name,
1692 &dir_name, &rel_name);
1693 if (!b) {
1694 errno = ENOMEM;
1695 return -1;
1696 }
1697
1698 fd = open(dir_name, O_RDONLY, 0);
1699 TALLOC_FREE(dir_name);
1700 if (fd == -1) {
1701 return -1;
1702 }
1703
1704 set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1705 ret = fstatat(fd, rel_name, &st, flag);
1706 drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1707
1708 close(fd);
1709
1710 if (ret == 0) {
1711 init_stat_ex_from_stat(
1712 &smb_fname->st, &st,
1713 lp_fake_directory_create_times(SNUM(handle->conn)));
1714 }
1715
1716 return ret;
1717 #else
1718 return -1;
1719 #endif
1720 }
1721
1722 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1723 struct smb_filename *smb_fname)
1724 {
1725 int ret;
1726 struct gpfs_config_data *config;
1727
1728 SMB_VFS_HANDLE_GET_DATA(handle, config,
1729 struct gpfs_config_data,
1730 return -1);
1731
1732 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1733 if (ret == -1 && errno == EACCES) {
1734 DEBUG(10, ("Trying stat with capability for %s\n",
1735 smb_fname->base_name));
1736 ret = stat_with_capability(handle, smb_fname, 0);
1737 }
1738 return ret;
1739 }
1740
1741 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1742 struct smb_filename *smb_fname)
1743 {
1744 int ret;
1745 struct gpfs_config_data *config;
1746
1747 SMB_VFS_HANDLE_GET_DATA(handle, config,
1748 struct gpfs_config_data,
1749 return -1);
1750
1751 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1752 if (ret == -1 && errno == EACCES) {
1753 DEBUG(10, ("Trying lstat with capability for %s\n",
1754 smb_fname->base_name));
1755 ret = stat_with_capability(handle, smb_fname,
1756 AT_SYMLINK_NOFOLLOW);
1757 }
1758 return ret;
1759 }
1760
1761 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
1762 int idx, int *flags)
1763 {
1764 if (!null_timespec(ts)) {
1765 *flags |= 1 << idx;
1766 gt[idx].tv_sec = ts.tv_sec;
1767 gt[idx].tv_nsec = ts.tv_nsec;
1768 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
1769 }
1770 }
1771
1772 static int smbd_gpfs_set_times_path(char *path, struct smb_file_time *ft)
1773 {
1774 gpfs_timestruc_t gpfs_times[4];
1775 int flags = 0;
1776 int rc;
1777
1778 ZERO_ARRAY(gpfs_times);
1779 timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
1780 timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
1781 /* No good mapping from LastChangeTime to ctime, not storing */
1782 timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
1783
1784 if (!flags) {
1785 DEBUG(10, ("nothing to do, return to avoid EINVAL\n"));
1786 return 0;
1787 }
1788
1789 rc = gpfswrap_set_times_path(path, flags, gpfs_times);
1790
1791 if (rc != 0 && errno != ENOSYS) {
1792 DEBUG(1,("gpfs_set_times() returned with error %s\n",
1793 strerror(errno)));
1794 }
1795
1796 return rc;
1797 }
1798
1799 static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
1800 const struct smb_filename *smb_fname,
1801 struct smb_file_time *ft)
1802 {
1803
1804 struct gpfs_winattr attrs;
1805 int ret;
1806 char *path = NULL;
1807 NTSTATUS status;
1808 struct gpfs_config_data *config;
1809
1810 SMB_VFS_HANDLE_GET_DATA(handle, config,
1811 struct gpfs_config_data,
1812 return -1);
1813
1814 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1815 if (!NT_STATUS_IS_OK(status)) {
1816 errno = map_errno_from_nt_status(status);
1817 return -1;
1818 }
1819
1820 /* Try to use gpfs_set_times if it is enabled and available */
1821 if (config->settimes) {
1822 ret = smbd_gpfs_set_times_path(path, ft);
1823
1824 if (ret == 0 || (ret == -1 && errno != ENOSYS)) {
1825 return ret;
1826 }
1827 }
1828
1829 DEBUG(10,("gpfs_set_times() not available or disabled, "
1830 "use ntimes and winattr\n"));
1831
1832 ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1833 if(ret == -1){
1834 /* don't complain if access was denied */
1835 if (errno != EPERM && errno != EACCES) {
1836 DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed:"
1837 "%s", strerror(errno)));
1838 }
1839 return -1;
1840 }
1841
1842 if(null_timespec(ft->create_time)){
1843 DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
1844 return 0;
1845 }
1846
1847 if (!config->winattr) {
1848 return 0;
1849 }
1850
1851 attrs.winAttrs = 0;
1852 attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1853 attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1854
1855 ret = gpfswrap_set_winattrs_path(discard_const_p(char, path),
1856 GPFS_WINATTR_SET_CREATION_TIME,
1857 &attrs);
1858 if(ret == -1 && errno != ENOSYS){
1859 DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
1860 return -1;
1861 }
1862 return 0;
1863
1864 }
1865
1866 static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
1867 struct files_struct *fsp, uint32_t mode,
1868 off_t offset, off_t len)
1869 {
1870 int ret;
1871 struct gpfs_config_data *config;
1872
1873 SMB_VFS_HANDLE_GET_DATA(handle, config,
1874 struct gpfs_config_data,
1875 return -1);
1876
1877 if (!config->prealloc) {
1878 /* you should better not run fallocate() on GPFS at all */
1879 errno = ENOTSUP;
1880 return -1;
1881 }
1882
1883 if (mode != 0) {
1884 DEBUG(10, ("unmapped fallocate flags: %lx\n",
1885 (unsigned long)mode));
1886 errno = ENOTSUP;
1887 return -1;
1888 }
1889
1890 ret = gpfswrap_prealloc(fsp->fh->fd, offset, len);
1891
1892 if (ret == -1 && errno != ENOSYS) {
1893 DEBUG(0, ("GPFS prealloc failed: %s\n", strerror(errno)));
1894 } else if (ret == -1 && errno == ENOSYS) {
1895 DEBUG(10, ("GPFS prealloc not supported.\n"));
1896 } else {
1897 DEBUG(10, ("GPFS prealloc succeeded.\n"));
1898 }
1899
1900 return ret;
1901 }
1902
1903 static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1904 off_t len)
1905 {
1906 int result;
1907 struct gpfs_config_data *config;
1908
1909 SMB_VFS_HANDLE_GET_DATA(handle, config,
1910 struct gpfs_config_data,
1911 return -1);
1912
1913 if (!config->ftruncate) {
1914 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1915 }
1916
1917 result = gpfswrap_ftruncate(fsp->fh->fd, len);
1918 if ((result == -1) && (errno == ENOSYS)) {
1919 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1920 }
1921 return result;
1922 }
1923
1924 static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
1925 const struct smb_filename *fname,
1926 SMB_STRUCT_STAT *sbuf)
1927 {
1928 struct gpfs_winattr attrs;
1929 char *path = NULL;
1930 NTSTATUS status;
1931 struct gpfs_config_data *config;
1932 int ret;
1933
1934 SMB_VFS_HANDLE_GET_DATA(handle, config,
1935 struct gpfs_config_data,
1936 return -1);
1937
1938 if (!config->winattr) {
1939 return false;
1940 }
1941
1942 status = get_full_smb_filename(talloc_tos(), fname, &path);
1943 if (!NT_STATUS_IS_OK(status)) {
1944 return false;
1945 }
1946
1947 ret = gpfswrap_get_winattrs_path(path, &attrs);
1948 if (ret == -1) {
1949 TALLOC_FREE(path);
1950 return false;
1951 }
1952
1953 if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
1954 DEBUG(10, ("%s is offline\n", path));
1955 TALLOC_FREE(path);
1956 return true;
1957 }
1958 DEBUG(10, ("%s is online\n", path));
1959 TALLOC_FREE(path);
1960 return false;
1961 }
1962
1963 static bool vfs_gpfs_fsp_is_offline(struct vfs_handle_struct *handle,
1964 struct files_struct *fsp)
1965 {
1966 struct gpfs_fsp_extension *ext;
1967
1968 ext = VFS_FETCH_FSP_EXTENSION(handle, fsp);
1969 if (ext == NULL) {
1970 /*
1971 * Something bad happened, always ask.
1972 */
1973 return vfs_gpfs_is_offline(handle, fsp->fsp_name,
1974 &fsp->fsp_name->st);
1975 }
1976
1977 if (ext->offline) {
1978 /*
1979 * As long as it's offline, ask.
1980 */
1981 ext->offline = vfs_gpfs_is_offline(handle, fsp->fsp_name,
1982 &fsp->fsp_name->st);
1983 }
1984
1985 return ext->offline;
1986 }
1987
1988 static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
1989 struct files_struct *fsp)
1990 {
1991 return vfs_gpfs_fsp_is_offline(handle, fsp);
1992 }
1993
1994 static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
1995 files_struct *fsp, const DATA_BLOB *hdr,
1996 off_t offset, size_t n)
1997 {
1998 if (vfs_gpfs_fsp_is_offline(handle, fsp)) {
1999 errno = ENOSYS;
2000 return -1;
2001 }
2002 return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
2003 }
2004
2005 static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
2006 const char *service, const char *user)
2007 {
2008 struct gpfs_config_data *config;
2009 int ret;
2010
2011 gpfswrap_lib_init(0);
2012
2013 config = talloc_zero(handle->conn, struct gpfs_config_data);
2014 if (!config) {
2015 DEBUG(0, ("talloc_zero() failed\n"));
2016 errno = ENOMEM;
2017 return -1;
2018 }
2019
2020 ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
2021 if (ret < 0) {
2022 TALLOC_FREE(config);
2023 return ret;
2024 }
2025
2026 ret = smbacl4_get_vfs_params(handle->conn, &config->nfs4_params);
2027 if (ret < 0) {
2028 TALLOC_FREE(config);
2029 return ret;
2030 }
2031
2032 config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2033 "sharemodes", true);
2034
2035 config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
2036 "leases", true);
2037
2038 config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
2039 "hsm", false);
2040
2041 config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
2042 "syncio", false);
2043
2044 config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
2045 "winattr", false);
2046
2047 config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
2048 "ftruncate", true);
2049
2050 config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
2051 "getrealfilename", true);
2052
2053 config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
2054 "dfreequota", false);
2055
2056 config->prealloc = lp_parm_bool(SNUM(handle->conn), "gpfs",
2057 "prealloc", true);
2058
2059 config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
2060
2061 config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
2062 "settimes", true);
2063 config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
2064 "recalls", true);
2065
2066 SMB_VFS_HANDLE_SET_DATA(handle, config,
2067 NULL, struct gpfs_config_data,
2068 return -1);
2069
2070 if (config->leases) {
2071 /*
2072 * GPFS lease code is based on kernel oplock code
2073 * so make sure it is turned on
2074 */
2075 if (!lp_kernel_oplocks(SNUM(handle->conn))) {
2076 DEBUG(5, ("Enabling kernel oplocks for "
2077 "gpfs:leases to work\n"));
2078 lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
2079 "true");
2080 }
2081
2082 /*
2083 * as the kernel does not properly support Level II oplocks
2084 * and GPFS leases code is based on kernel infrastructure, we
2085 * need to turn off Level II oplocks if gpfs:leases is enabled
2086 */
2087 if (lp_level2_oplocks(SNUM(handle->conn))) {
2088 DEBUG(5, ("gpfs:leases are enabled, disabling "
2089 "Level II oplocks\n"));
2090 lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
2091 "false");
2092 }
2093 }
2094
2095 return 0;
2096 }
2097
2098 static int get_gpfs_quota(const char *pathname, int type, int id,
2099 struct gpfs_quotaInfo *qi)
2100 {
2101 int ret;
2102
2103 ret = gpfswrap_quotactl(discard_const_p(char, pathname),
2104 GPFS_QCMD(Q_GETQUOTA, type), id, qi);
2105
2106 if (ret) {
2107 if (errno == GPFS_E_NO_QUOTA_INST) {
2108 DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
2109 } else if (errno != ENOSYS) {
2110 DEBUG(0, ("Get quota failed, type %d, id, %d, "
2111 "errno %d.\n", type, id, errno));
2112 }
2113
2114 return ret;
2115 }
2116
2117 DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
2118 type, id, qi->blockUsage, qi->blockHardLimit,
2119 qi->blockSoftLimit, qi->blockGraceTime));
2120
2121 return ret;
2122 }
2123
2124 static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
2125 uint64_t *dfree, uint64_t *dsize)
2126 {
2127 uint64_t usage, limit;
2128
2129 /*
2130 * The quota reporting is done in units of 1024 byte blocks, but
2131 * sys_fsusage uses units of 512 byte blocks, adjust the block number
2132 * accordingly. Also filter possibly negative usage counts from gpfs.
2133 */
2134 usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
2135 limit = (uint64_t)qi.blockHardLimit * 2;
2136
2137 /*
2138 * When the grace time for the exceeded soft block quota has been
2139 * exceeded, the soft block quota becomes an additional hard limit.
2140 */
2141 if (qi.blockSoftLimit &&
2142 qi.blockGraceTime && cur_time > qi.blockGraceTime) {
2143 /* report disk as full */
2144 *dfree = 0;
2145 *dsize = MIN(*dsize, usage);
2146 }
2147
2148 if (!qi.blockHardLimit)
2149 return;
2150
2151 if (usage >= limit) {
2152 /* report disk as full */
2153 *dfree = 0;
2154 *dsize = MIN(*dsize, usage);
2155
2156 } else {
2157 /* limit has not been reached, determine "free space" */
2158 *dfree = MIN(*dfree, limit - usage);
2159 *dsize = MIN(*dsize, limit);
2160 }
2161 }
2162
2163 static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle,
2164 const struct smb_filename *smb_fname,
2165 uint64_t *bsize,
2166 uint64_t *dfree,
2167 uint64_t *dsize)
2168 {
2169 struct security_unix_token *utok;
2170 struct gpfs_quotaInfo qi_user = { 0 }, qi_group = { 0 };
2171 struct gpfs_config_data *config;
2172 int err;
2173 time_t cur_time;
2174
2175 SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
2176 return (uint64_t)-1);
2177 if (!config->dfreequota) {
2178 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2179 bsize, dfree, dsize);
2180 }
2181
2182 err = sys_fsusage(smb_fname->base_name, dfree, dsize);
2183 if (err) {
2184 DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
2185 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2186 bsize, dfree, dsize);
2187 }
2188
2189 /* sys_fsusage returns units of 512 bytes */
2190 *bsize = 512;
2191
2192 DEBUG(10, ("fs dfree %llu, dsize %llu\n",
2193 (unsigned long long)*dfree, (unsigned long long)*dsize));
2194
2195 utok = handle->conn->session_info->unix_token;
2196
2197 err = get_gpfs_quota(smb_fname->base_name,
2198 GPFS_USRQUOTA, utok->uid, &qi_user);
2199 if (err) {
2200 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2201 bsize, dfree, dsize);
2202 }
2203
2204 err = get_gpfs_quota(smb_fname->base_name,
2205 GPFS_GRPQUOTA, utok->gid, &qi_group);
2206 if (err) {
2207 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2208 bsize, dfree, dsize);
2209 }
2210
2211 cur_time = time(NULL);
2212
2213 /* Adjust free space and size according to quota limits. */
2214 vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
2215 vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
2216
2217 return *dfree / 2;
2218 }
2219
2220 static int vfs_gpfs_get_quota(vfs_handle_struct *handle,
2221 const struct smb_filename *smb_fname,
2222 enum SMB_QUOTA_TYPE qtype,
2223 unid_t id,
2224 SMB_DISK_QUOTA *dq)
2225 {
2226 switch(qtype) {
2227 /*
2228 * User/group quota are being used for disk-free
2229 * determination, which in this module is done directly
2230 * by the disk-free function. It's important that this
2231 * module does not return wrong quota values by mistake,
2232 * which would modify the correct values set by disk-free.
2233 * User/group quota are also being used for processing
2234 * NT_TRANSACT_GET_USER_QUOTA in smb1 protocol, which is
2235 * currently not supported by this module.
2236 */
2237 case SMB_USER_QUOTA_TYPE:
2238 case SMB_GROUP_QUOTA_TYPE:
2239 errno = ENOSYS;
2240 return -1;
2241 default:
2242 return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
2243 qtype, id, dq);
2244 }
2245 }
2246
2247 static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
2248 enum timestamp_set_resolution *p_ts_res)
2249 {
2250 struct gpfs_config_data *config;
2251 uint32_t next;
2252
2253 next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
2254
2255 SMB_VFS_HANDLE_GET_DATA(handle, config,
2256 struct gpfs_config_data,
2257 return next);
2258
2259 if (config->hsm) {
2260 next |= FILE_SUPPORTS_REMOTE_STORAGE;
2261 }
2262 return next;
2263 }
2264
2265 static int vfs_gpfs_open(struct vfs_handle_struct *handle,
2266 struct smb_filename *smb_fname, files_struct *fsp,
2267 int flags, mode_t mode)
2268 {
2269 struct gpfs_config_data *config;
2270 int ret;
2271 struct gpfs_fsp_extension *ext;
2272
2273 SMB_VFS_HANDLE_GET_DATA(handle, config,
2274 struct gpfs_config_data,
2275 return -1);
2276
2277 if (config->hsm && !config->recalls &&
2278 vfs_gpfs_fsp_is_offline(handle, fsp)) {
2279 DEBUG(10, ("Refusing access to offline file %s\n",
2280 fsp_str_dbg(fsp)));
2281 errno = EACCES;
2282 return -1;
2283 }
2284
2285 if (config->syncio) {
2286 flags |= O_SYNC;
2287 }
2288
2289 ext = VFS_ADD_FSP_EXTENSION(handle, fsp, struct gpfs_fsp_extension,
2290 NULL);
2291 if (ext == NULL) {
2292 errno = ENOMEM;
2293 return -1;
2294 }
2295
2296 /*
2297 * Assume the file is offline until gpfs tells us it's online.
2298 */
2299 *ext = (struct gpfs_fsp_extension) { .offline = true };
2300
2301 ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
2302 if (ret == -1) {
2303 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
2304 }
2305 return ret;
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 = vfs_gpfs_fsp_is_offline(handle, fsp);
2315
2316 ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
2317
2318 if ((ret != -1) && was_offline) {
2319 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2320 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2321 fsp->fsp_name->base_name);
2322 }
2323
2324 return ret;
2325 }
2326
2327 struct vfs_gpfs_pread_state {
2328 struct files_struct *fsp;
2329 ssize_t ret;
2330 bool was_offline;
2331 struct vfs_aio_state vfs_aio_state;
2332 };
2333
2334 static void vfs_gpfs_pread_done(struct tevent_req *subreq);
2335
2336 static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
2337 TALLOC_CTX *mem_ctx,
2338 struct tevent_context *ev,
2339 struct files_struct *fsp,
2340 void *data, size_t n,
2341 off_t offset)
2342 {
2343 struct tevent_req *req, *subreq;
2344 struct vfs_gpfs_pread_state *state;
2345
2346 req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
2347 if (req == NULL) {
2348 return NULL;
2349 }
2350 state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2351 state->fsp = fsp;
2352 subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
2353 n, offset);
2354 if (tevent_req_nomem(subreq, req)) {
2355 return tevent_req_post(req, ev);
2356 }
2357 tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
2358 return req;
2359 }
2360
2361 static void vfs_gpfs_pread_done(struct tevent_req *subreq)
2362 {
2363 struct tevent_req *req = tevent_req_callback_data(
2364 subreq, struct tevent_req);
2365 struct vfs_gpfs_pread_state *state = tevent_req_data(
2366 req, struct vfs_gpfs_pread_state);
2367
2368 state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
2369 TALLOC_FREE(subreq);
2370 tevent_req_done(req);
2371 }
2372
2373 static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req,
2374 struct vfs_aio_state *vfs_aio_state)
2375 {
2376 struct vfs_gpfs_pread_state *state = tevent_req_data(
2377 req, struct vfs_gpfs_pread_state);
2378 struct files_struct *fsp = state->fsp;
2379
2380 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2381 return -1;
2382 }
2383 *vfs_aio_state = state->vfs_aio_state;
2384
2385 if ((state->ret != -1) && state->was_offline) {
2386 DEBUG(10, ("sending notify\n"));
2387 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2388 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2389 fsp->fsp_name->base_name);
2390 }
2391
2392 return state->ret;
2393 }
2394
2395 static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
2396 const void *data, size_t n, off_t offset)
2397 {
2398 ssize_t ret;
2399 bool was_offline;
2400
2401 was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2402
2403 ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2404
2405 if ((ret != -1) && was_offline) {
2406 notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
2407 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2408 fsp->fsp_name->base_name);
2409 }
2410
2411 return ret;
2412 }
2413
2414 struct vfs_gpfs_pwrite_state {
2415 struct files_struct *fsp;
2416 ssize_t ret;
2417 bool was_offline;
2418 struct vfs_aio_state vfs_aio_state;
2419 };
2420
2421 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
2422
2423 static struct tevent_req *vfs_gpfs_pwrite_send(
2424 struct vfs_handle_struct *handle,
2425 TALLOC_CTX *mem_ctx,
2426 struct tevent_context *ev,
2427 struct files_struct *fsp,
2428 const void *data, size_t n,
2429 off_t offset)
2430 {
2431 struct tevent_req *req, *subreq;
2432 struct vfs_gpfs_pwrite_state *state;
2433
2434 req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
2435 if (req == NULL) {
2436 return NULL;
2437 }
2438 state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
2439 state->fsp = fsp;
2440 subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
2441 n, offset);
2442 if (tevent_req_nomem(subreq, req)) {
2443 return tevent_req_post(req, ev);
2444 }
2445 tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
2446 return req;
2447 }
2448
2449 static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
2450 {
2451 struct tevent_req *req = tevent_req_callback_data(
2452 subreq, struct tevent_req);
2453 struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2454 req, struct vfs_gpfs_pwrite_state);
2455
2456 state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
2457 TALLOC_FREE(subreq);
2458 tevent_req_done(req);
2459 }
2460
2461 static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req,
2462 struct vfs_aio_state *vfs_aio_state)
2463 {
2464 struct vfs_gpfs_pwrite_state *state = tevent_req_data(
2465 req, struct vfs_gpfs_pwrite_state);
2466 struct files_struct *fsp = state->fsp;
2467
2468 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2469 return -1;
2470 }
2471 *vfs_aio_state = state->vfs_aio_state;
2472
2473 if ((state->ret != -1) && state->was_offline) {
2474 DEBUG(10, ("sending notify\n"));
2475 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
2476 FILE_NOTIFY_CHANGE_ATTRIBUTES,
2477 fsp->fsp_name->base_name);
2478 }
2479
2480 return state->ret;
2481 }
2482
2483
2484 static struct vfs_fn_pointers vfs_gpfs_fns = {
2485 .connect_fn = vfs_gpfs_connect,
2486 .disk_free_fn = vfs_gpfs_disk_free,
2487 .get_quota_fn = vfs_gpfs_get_quota,
2488 .fs_capabilities_fn = vfs_gpfs_capabilities,
2489 .kernel_flock_fn = vfs_gpfs_kernel_flock,
2490 .linux_setlease_fn = vfs_gpfs_setlease,
2491 .get_real_filename_fn = vfs_gpfs_get_real_filename,
2492 .get_dos_attributes_fn = vfs_gpfs_get_dos_attributes,
2493 .fget_dos_attributes_fn = vfs_gpfs_fget_dos_attributes,
2494 .set_dos_attributes_fn = vfs_gpfs_set_dos_attributes,
2495 .fset_dos_attributes_fn = vfs_gpfs_fset_dos_attributes,
2496 .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
2497 .get_nt_acl_fn = gpfsacl_get_nt_acl,
2498 .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
2499 .sys_acl_get_file_fn = gpfsacl_sys_acl_get_file,
2500 .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
2501 .sys_acl_blob_get_file_fn = gpfsacl_sys_acl_blob_get_file,
2502 .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
2503 .sys_acl_set_file_fn = gpfsacl_sys_acl_set_file,
2504 .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
2505 .sys_acl_delete_def_file_fn = gpfsacl_sys_acl_delete_def_file,
2506 .chmod_fn = vfs_gpfs_chmod,
2507 .fchmod_fn = vfs_gpfs_fchmod,
2508 .close_fn = vfs_gpfs_close,
2509 .stat_fn = vfs_gpfs_stat,
2510 .lstat_fn = vfs_gpfs_lstat,
2511 .ntimes_fn = vfs_gpfs_ntimes,
2512 .aio_force_fn = vfs_gpfs_aio_force,
2513 .sendfile_fn = vfs_gpfs_sendfile,
2514 .fallocate_fn = vfs_gpfs_fallocate,
2515 .open_fn = vfs_gpfs_open,
2516 .pread_fn = vfs_gpfs_pread,
2517 .pread_send_fn = vfs_gpfs_pread_send,
2518 .pread_recv_fn = vfs_gpfs_pread_recv,
2519 .pwrite_fn = vfs_gpfs_pwrite,
2520 .pwrite_send_fn = vfs_gpfs_pwrite_send,
2521 .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
2522 .ftruncate_fn = vfs_gpfs_ftruncate
2523 };
2524
2525 NTSTATUS vfs_gpfs_init(TALLOC_CTX *);
2526 NTSTATUS vfs_gpfs_init(TALLOC_CTX *ctx)
2527 {
2528 int ret;
2529
2530 ret = gpfswrap_init();
2531 if (ret != 0) {
2532 DEBUG(1, ("Could not initialize GPFS library wrapper\n"));
2533 }
2534
2535 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
2536 &vfs_gpfs_fns);
2537 }
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