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Fix nonempty blank lines in vfs_gpfs.c
[Samba.git] / source / modules / vfs_gpfs.c
blob187c13b009e3e2f545ec5ac44ef100946a88640c
1 /*
2 Unix SMB/CIFS implementation.
3 Wrap gpfs calls in vfs functions.
4
5 Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
6
7 Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
8 and Gomati Mohanan <gomati.mohanan@in.ibm.com>
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25
26 #undef DBGC_CLASS
27 #define DBGC_CLASS DBGC_VFS
28
29 #include <gpfs_gpl.h>
30 #include "nfs4_acls.h"
31 #include "vfs_gpfs.h"
32
33 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
34 uint32 share_mode)
35 {
36
37 START_PROFILE(syscall_kernel_flock);
38
39 kernel_flock(fsp->fh->fd, share_mode);
40
41 if (!set_gpfs_sharemode(fsp, fsp->access_mask, fsp->share_access)) {
42
43 return -1;
44
45 }
46
47 END_PROFILE(syscall_kernel_flock);
48
49 return 0;
50 }
51
52 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
53 int leasetype)
54 {
55 int ret;
56
57 START_PROFILE(syscall_linux_setlease);
58
59 if ( linux_set_lease_sighandler(fsp->fh->fd) == -1)
60 return -1;
61
62 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
63
64 if ( ret < 0 ) {
65 /* This must have come from GPFS not being available */
66 /* or some other error, hence call the default */
67 ret = linux_setlease(fsp->fh->fd, leasetype);
68 }
69
70 END_PROFILE(syscall_linux_setlease);
71
72 return ret;
73 }
74
75
76
77 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
78 {
79 int i;
80 if (gacl==NULL)
81 {
82 DEBUG(0, ("gpfs acl is NULL\n"));
83 return;
84 }
85
86 DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n",
87 gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len));
88 for(i=0; i<gacl->acl_nace; i++)
89 {
90 struct gpfs_ace_v4 *gace = gacl->ace_v4 + i;
91 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n",
92 i, gace->aceType, gace->aceFlags, gace->aceMask,
93 gace->aceIFlags, gace->aceWho));
94 }
95 }
96
97 static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type)
98 {
99 struct gpfs_acl *acl;
100 size_t len = 200;
101 int ret;
102 TALLOC_CTX *mem_ctx = talloc_tos();
103
104 acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len);
105 if (acl == NULL) {
106 errno = ENOMEM;
107 return NULL;
108 }
109
110 acl->acl_len = len;
111 acl->acl_level = 0;
112 acl->acl_version = 0;
113 acl->acl_type = type;
114
115 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
116 if ((ret != 0) && (errno == ENOSPC)) {
117 struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE(
118 mem_ctx, acl->acl_len + sizeof(struct gpfs_acl));
119 if (new_acl == NULL) {
120 errno = ENOMEM;
121 return NULL;
122 }
123
124 new_acl->acl_len = acl->acl_len;
125 new_acl->acl_level = acl->acl_level;
126 new_acl->acl_version = acl->acl_version;
127 new_acl->acl_type = acl->acl_type;
128 acl = new_acl;
129
130 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
131 }
132 if (ret != 0)
133 {
134 DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno)));
135 return NULL;
136 }
137
138 return acl;
139 }
140
141 /* Tries to get nfs4 acls and returns SMB ACL allocated.
142 * On failure returns 1 if it got non-NFSv4 ACL to prompt
143 * retry with POSIX ACL checks.
144 * On failure returns -1 if there is system (GPFS) error, check errno.
145 * Returns 0 on success
146 */
147 static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl)
148 {
149 int i;
150 struct gpfs_acl *gacl = NULL;
151 DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
152
153 /* First get the real acl length */
154 gacl = gpfs_getacl_alloc(fname, 0);
155 if (gacl == NULL) {
156 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
157 fname, strerror(errno)));
158 return -1;
159 }
160
161 if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
162 DEBUG(10, ("Got non-nfsv4 acl\n"));
163 /* Retry with POSIX ACLs check */
164 return 1;
165 }
166
167 *ppacl = smb_create_smb4acl();
168
169 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
170 gacl->acl_len, gacl->acl_level, gacl->acl_version,
171 gacl->acl_nace));
172
173 for (i=0; i<gacl->acl_nace; i++) {
174 struct gpfs_ace_v4 *gace = &gacl->ace_v4[i];
175 SMB_ACE4PROP_T smbace;
176 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
177 "who: %d\n", gace->aceType, gace->aceIFlags,
178 gace->aceFlags, gace->aceMask, gace->aceWho));
179
180 ZERO_STRUCT(smbace);
181 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
182 smbace.flags |= SMB_ACE4_ID_SPECIAL;
183 switch (gace->aceWho) {
184 case ACE4_SPECIAL_OWNER:
185 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
186 break;
187 case ACE4_SPECIAL_GROUP:
188 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
189 break;
190 case ACE4_SPECIAL_EVERYONE:
191 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
192 break;
193 default:
194 DEBUG(8, ("invalid special gpfs id %d "
195 "ignored\n", gace->aceWho));
196 continue; /* don't add it */
197 }
198 } else {
199 if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
200 smbace.who.gid = gace->aceWho;
201 else
202 smbace.who.uid = gace->aceWho;
203 }
204
205 /* remove redundent deny entries */
206 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
207 struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1];
208 if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
209 prev->aceFlags == gace->aceFlags &&
210 prev->aceIFlags == gace->aceIFlags &&
211 (gace->aceMask & prev->aceMask) == 0 &&
212 gace->aceWho == prev->aceWho) {
213 /* its redundent - skip it */
214 continue;
215 }
216 }
217
218 smbace.aceType = gace->aceType;
219 smbace.aceFlags = gace->aceFlags;
220 smbace.aceMask = gace->aceMask;
221 smb_add_ace4(*ppacl, &smbace);
222 }
223
224 return 0;
225 }
226
227 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
228 files_struct *fsp, uint32 security_info,
229 SEC_DESC **ppdesc)
230 {
231 SMB4ACL_T *pacl = NULL;
232 int result;
233
234 *ppdesc = NULL;
235 result = gpfs_get_nfs4_acl(fsp->fsp_name, &pacl);
236
237 if (result == 0)
238 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
239
240 if (result > 0) {
241 DEBUG(10, ("retrying with posix acl...\n"));
242 return posix_fget_nt_acl(fsp, security_info, ppdesc);
243 }
244
245 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
246 return map_nt_error_from_unix(errno);
247 }
248
249 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
250 const char *name,
251 uint32 security_info, SEC_DESC **ppdesc)
252 {
253 SMB4ACL_T *pacl = NULL;
254 int result;
255
256 *ppdesc = NULL;
257 result = gpfs_get_nfs4_acl(name, &pacl);
258
259 if (result == 0)
260 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl);
261
262 if (result > 0) {
263 DEBUG(10, ("retrying with posix acl...\n"));
264 return posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
265 }
266
267 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
268 return map_nt_error_from_unix(errno);
269 }
270
271 static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
272 {
273 int ret;
274 gpfs_aclLen_t gacl_len;
275 SMB4ACE_T *smbace;
276 struct gpfs_acl *gacl;
277 TALLOC_CTX *mem_ctx = talloc_tos();
278
279 gacl_len = sizeof(struct gpfs_acl) +
280 (smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t);
281
282 gacl = TALLOC_SIZE(mem_ctx, gacl_len);
283 if (gacl == NULL) {
284 DEBUG(0, ("talloc failed\n"));
285 errno = ENOMEM;
286 return False;
287 }
288
289 gacl->acl_len = gacl_len;
290 gacl->acl_level = 0;
291 gacl->acl_version = GPFS_ACL_VERSION_NFS4;
292 gacl->acl_type = GPFS_ACL_TYPE_NFS4;
293 gacl->acl_nace = 0; /* change later... */
294
295 for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
296 struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace];
297 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
298
299 gace->aceType = aceprop->aceType;
300 gace->aceFlags = aceprop->aceFlags;
301 gace->aceMask = aceprop->aceMask;
302
303 /*
304 * GPFS can't distinguish between WRITE and APPEND on
305 * files, so one being set without the other is an
306 * error. Sorry for the many ()'s :-)
307 */
308
309 if (!fsp->is_directory
310 &&
311 ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
312 && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
313 ||
314 (((gace->aceMask & ACE4_MASK_WRITE) != 0)
315 && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
316 &&
317 lp_parm_bool(fsp->conn->params->service, "gpfs",
318 "merge_writeappend", True)) {
319 DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
320 "WRITE^APPEND, setting WRITE|APPEND\n",
321 fsp->fsp_name));
322 gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
323 }
324
325 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
326
327 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
328 {
329 switch(aceprop->who.special_id)
330 {
331 case SMB_ACE4_WHO_EVERYONE:
332 gace->aceWho = ACE4_SPECIAL_EVERYONE;
333 break;
334 case SMB_ACE4_WHO_OWNER:
335 gace->aceWho = ACE4_SPECIAL_OWNER;
336 break;
337 case SMB_ACE4_WHO_GROUP:
338 gace->aceWho = ACE4_SPECIAL_GROUP;
339 break;
340 default:
341 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
342 continue; /* don't add it !!! */
343 }
344 } else {
345 /* just only for the type safety... */
346 if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
347 gace->aceWho = aceprop->who.gid;
348 else
349 gace->aceWho = aceprop->who.uid;
350 }
351
352 gacl->acl_nace++;
353 }
354
355 ret = smbd_gpfs_putacl(fsp->fsp_name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
356 if (ret != 0) {
357 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
358 gpfs_dumpacl(8, gacl);
359 return False;
360 }
361
362 DEBUG(10, ("gpfs_putacl succeeded\n"));
363 return True;
364 }
365
366 static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
367 {
368 struct gpfs_acl *acl;
369 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
370
371 acl = gpfs_getacl_alloc(fsp->fsp_name, 0);
372 if (acl == NULL)
373 return result;
374
375 if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
376 {
377 result = smb_set_nt_acl_nfs4(
378 fsp, security_info_sent, psd,
379 gpfsacl_process_smbacl);
380 } else { /* assume POSIX ACL - by default... */
381 result = set_nt_acl(fsp, security_info_sent, psd);
382 }
383
384 return result;
385 }
386
387 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
388 {
389 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
390 }
391
392 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
393 {
394 SMB_ACL_T result;
395 int i;
396
397 result = sys_acl_init(pacl->acl_nace);
398 if (result == NULL) {
399 errno = ENOMEM;
400 return NULL;
401 }
402
403 result->count = pacl->acl_nace;
404
405 for (i=0; i<pacl->acl_nace; i++) {
406 struct smb_acl_entry *ace = &result->acl[i];
407 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
408
409 DEBUG(10, ("Converting type %d id %lu perm %x\n",
410 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
411 (int)g_ace->ace_perm));
412
413 switch (g_ace->ace_type) {
414 case GPFS_ACL_USER:
415 ace->a_type = SMB_ACL_USER;
416 ace->uid = (uid_t)g_ace->ace_who;
417 break;
418 case GPFS_ACL_USER_OBJ:
419 ace->a_type = SMB_ACL_USER_OBJ;
420 break;
421 case GPFS_ACL_GROUP:
422 ace->a_type = SMB_ACL_GROUP;
423 ace->gid = (gid_t)g_ace->ace_who;
424 break;
425 case GPFS_ACL_GROUP_OBJ:
426 ace->a_type = SMB_ACL_GROUP_OBJ;
427 break;
428 case GPFS_ACL_OTHER:
429 ace->a_type = SMB_ACL_OTHER;
430 break;
431 case GPFS_ACL_MASK:
432 ace->a_type = SMB_ACL_MASK;
433 break;
434 default:
435 DEBUG(10, ("Got invalid ace_type: %d\n",
436 g_ace->ace_type));
437 errno = EINVAL;
438 SAFE_FREE(result);
439 return NULL;
440 }
441
442 ace->a_perm = 0;
443 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
444 SMB_ACL_READ : 0;
445 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
446 SMB_ACL_WRITE : 0;
447 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
448 SMB_ACL_EXECUTE : 0;
449
450 DEBUGADD(10, ("Converted to %d perm %x\n",
451 ace->a_type, ace->a_perm));
452 }
453
454 return result;
455 }
456
457 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
458 {
459 struct gpfs_acl *pacl;
460 SMB_ACL_T result = NULL;
461
462 pacl = gpfs_getacl_alloc(path, type);
463
464 if (pacl == NULL) {
465 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
466 path, strerror(errno)));
467 if (errno == 0) {
468 errno = EINVAL;
469 }
470 goto done;
471 }
472
473 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
474 DEBUG(10, ("Got acl version %d, expected %d\n",
475 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
476 errno = EINVAL;
477 goto done;
478 }
479
480 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
481 pacl->acl_len, pacl->acl_level, pacl->acl_version,
482 pacl->acl_nace));
483
484 result = gpfs2smb_acl(pacl);
485 if (result == NULL) {
486 goto done;
487 }
488
489 done:
490
491 if (errno != 0) {
492 SAFE_FREE(result);
493 }
494 return result;
495 }
496
497 SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
498 const char *path_p,
499 SMB_ACL_TYPE_T type)
500 {
501 gpfs_aclType_t gpfs_type;
502
503 switch(type) {
504 case SMB_ACL_TYPE_ACCESS:
505 gpfs_type = GPFS_ACL_TYPE_ACCESS;
506 break;
507 case SMB_ACL_TYPE_DEFAULT:
508 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
509 break;
510 default:
511 DEBUG(0, ("Got invalid type: %d\n", type));
512 smb_panic("exiting");
513 }
514
515 return gpfsacl_get_posix_acl(path_p, gpfs_type);
516 }
517
518 SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
519 files_struct *fsp)
520 {
521 return gpfsacl_get_posix_acl(fsp->fsp_name, GPFS_ACL_TYPE_ACCESS);
522 }
523
524 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
525 SMB_ACL_TYPE_T type)
526 {
527 gpfs_aclLen_t len;
528 struct gpfs_acl *result;
529 int i;
530 union gpfs_ace_union
531 {
532 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
533 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
534 };
535
536 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
537
538 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
539 (pacl->count)*sizeof(gpfs_ace_v1_t);
540
541 result = SMB_MALLOC(len);
542 if (result == NULL) {
543 errno = ENOMEM;
544 return result;
545 }
546
547 result->acl_len = len;
548 result->acl_level = 0;
549 result->acl_version = GPFS_ACL_VERSION_POSIX;
550 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
551 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
552 result->acl_nace = pacl->count;
553
554 for (i=0; i<pacl->count; i++) {
555 const struct smb_acl_entry *ace = &pacl->acl[i];
556 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
557
558 DEBUG(10, ("Converting type %d perm %x\n",
559 (int)ace->a_type, (int)ace->a_perm));
560
561 g_ace->ace_perm = 0;
562
563 switch(ace->a_type) {
564 case SMB_ACL_USER:
565 g_ace->ace_type = GPFS_ACL_USER;
566 g_ace->ace_who = (gpfs_uid_t)ace->uid;
567 break;
568 case SMB_ACL_USER_OBJ:
569 g_ace->ace_type = GPFS_ACL_USER_OBJ;
570 g_ace->ace_perm |= ACL_PERM_CONTROL;
571 g_ace->ace_who = 0;
572 break;
573 case SMB_ACL_GROUP:
574 g_ace->ace_type = GPFS_ACL_GROUP;
575 g_ace->ace_who = (gpfs_uid_t)ace->gid;
576 break;
577 case SMB_ACL_GROUP_OBJ:
578 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
579 g_ace->ace_who = 0;
580 break;
581 case SMB_ACL_MASK:
582 g_ace->ace_type = GPFS_ACL_MASK;
583 g_ace->ace_perm = 0x8f;
584 g_ace->ace_who = 0;
585 break;
586 case SMB_ACL_OTHER:
587 g_ace->ace_type = GPFS_ACL_OTHER;
588 g_ace->ace_who = 0;
589 break;
590 default:
591 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
592 errno = EINVAL;
593 SAFE_FREE(result);
594 return NULL;
595 }
596
597 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
598 ACL_PERM_READ : 0;
599 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
600 ACL_PERM_WRITE : 0;
601 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
602 ACL_PERM_EXECUTE : 0;
603
604 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
605 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
606 }
607
608 return result;
609 }
610
611 int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
612 const char *name,
613 SMB_ACL_TYPE_T type,
614 SMB_ACL_T theacl)
615 {
616 struct gpfs_acl *gpfs_acl;
617 int result;
618
619 gpfs_acl = smb2gpfs_acl(theacl, type);
620 if (gpfs_acl == NULL) {
621 return -1;
622 }
623
624 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
625
626 SAFE_FREE(gpfs_acl);
627 return result;
628 }
629
630 int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
631 files_struct *fsp,
632 SMB_ACL_T theacl)
633 {
634 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name, SMB_ACL_TYPE_ACCESS, theacl);
635 }
636
637 int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
638 const char *path)
639 {
640 errno = ENOTSUP;
641 return -1;
642 }
643
644 /*
645 * Assumed: mode bits are shiftable and standard
646 * Output: the new aceMask field for an smb nfs4 ace
647 */
648 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
649 {
650 const uint32 posix_nfs4map[3] = {
651 SMB_ACE4_EXECUTE, /* execute */
652 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
653 SMB_ACE4_READ_DATA /* read */
654 };
655 int i;
656 uint32_t posix_mask = 0x01;
657 uint32_t posix_bit;
658 uint32_t nfs4_bits;
659
660 for(i=0; i<3; i++) {
661 nfs4_bits = posix_nfs4map[i];
662 posix_bit = rwx & posix_mask;
663
664 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
665 if (posix_bit)
666 aceMask |= nfs4_bits;
667 else
668 aceMask &= ~nfs4_bits;
669 } else {
670 /* add deny bits when suitable */
671 if (!posix_bit)
672 aceMask |= nfs4_bits;
673 else
674 aceMask &= ~nfs4_bits;
675 } /* other ace types are unexpected */
676
677 posix_mask <<= 1;
678 }
679
680 return aceMask;
681 }
682
683 static int gpfsacl_emu_chmod(const char *path, mode_t mode)
684 {
685 SMB4ACL_T *pacl = NULL;
686 int result;
687 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
688 int i;
689 files_struct fake_fsp; /* TODO: rationalize parametrization */
690 SMB4ACE_T *smbace;
691
692 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
693
694 result = gpfs_get_nfs4_acl(path, &pacl);
695 if (result)
696 return result;
697
698 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
699 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
700 }
701
702 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
703 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
704 uint32_t specid = ace->who.special_id;
705
706 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
707 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
708 specid <= SMB_ACE4_WHO_EVERYONE) {
709
710 uint32_t newMask;
711
712 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
713 haveAllowEntry[specid] = True;
714
715 /* mode >> 6 for @owner, mode >> 3 for @group,
716 * mode >> 0 for @everyone */
717 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
718 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
719 if (ace->aceMask!=newMask) {
720 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
721 path, ace->aceMask, newMask, specid));
722 }
723 ace->aceMask = newMask;
724 }
725 }
726
727 /* make sure we have at least ALLOW entries
728 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
729 * - if necessary
730 */
731 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
732 SMB_ACE4PROP_T ace;
733
734 if (haveAllowEntry[i]==True)
735 continue;
736
737 ZERO_STRUCT(ace);
738 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
739 ace.flags |= SMB_ACE4_ID_SPECIAL;
740 ace.who.special_id = i;
741
742 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
743 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
744
745 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
746 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
747
748 /* don't add unnecessary aces */
749 if (!ace.aceMask)
750 continue;
751
752 /* we add it to the END - as windows expects allow aces */
753 smb_add_ace4(pacl, &ace);
754 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
755 path, mode, i, ace.aceMask));
756 }
757
758 /* don't add complementary DENY ACEs here */
759 ZERO_STRUCT(fake_fsp);
760 fake_fsp.fsp_name = (char *)path; /* no file_new is needed here */
761
762 /* put the acl */
763 if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False)
764 return -1;
765 return 0; /* ok for [f]chmod */
766 }
767
768 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
769 {
770 SMB_STRUCT_STAT st;
771 int rc;
772
773 if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) {
774 return -1;
775 }
776
777 /* avoid chmod() if possible, to preserve acls */
778 if ((st.st_mode & ~S_IFMT) == mode) {
779 return 0;
780 }
781
782 rc = gpfsacl_emu_chmod(path, mode);
783 if (rc == 1)
784 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
785 return rc;
786 }
787
788 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
789 {
790 SMB_STRUCT_STAT st;
791 int rc;
792
793 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
794 return -1;
795 }
796
797 /* avoid chmod() if possible, to preserve acls */
798 if ((st.st_mode & ~S_IFMT) == mode) {
799 return 0;
800 }
801
802 rc = gpfsacl_emu_chmod(fsp->fsp_name, mode);
803 if (rc == 1)
804 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
805 return rc;
806 }
807
808 /* VFS operations structure */
809
810 static vfs_op_tuple gpfs_op_tuples[] = {
811
812 { SMB_VFS_OP(vfs_gpfs_kernel_flock),
813 SMB_VFS_OP_KERNEL_FLOCK,
814 SMB_VFS_LAYER_OPAQUE },
815
816 { SMB_VFS_OP(vfs_gpfs_setlease),
817 SMB_VFS_OP_LINUX_SETLEASE,
818 SMB_VFS_LAYER_OPAQUE },
819
820 { SMB_VFS_OP(gpfsacl_fget_nt_acl),
821 SMB_VFS_OP_FGET_NT_ACL,
822 SMB_VFS_LAYER_TRANSPARENT },
823
824 { SMB_VFS_OP(gpfsacl_get_nt_acl),
825 SMB_VFS_OP_GET_NT_ACL,
826 SMB_VFS_LAYER_TRANSPARENT },
827
828 { SMB_VFS_OP(gpfsacl_fset_nt_acl),
829 SMB_VFS_OP_FSET_NT_ACL,
830 SMB_VFS_LAYER_TRANSPARENT },
831
832 { SMB_VFS_OP(gpfsacl_sys_acl_get_file),
833 SMB_VFS_OP_SYS_ACL_GET_FILE,
834 SMB_VFS_LAYER_TRANSPARENT },
835
836 { SMB_VFS_OP(gpfsacl_sys_acl_get_fd),
837 SMB_VFS_OP_SYS_ACL_GET_FD,
838 SMB_VFS_LAYER_TRANSPARENT },
839
840 { SMB_VFS_OP(gpfsacl_sys_acl_set_file),
841 SMB_VFS_OP_SYS_ACL_SET_FILE,
842 SMB_VFS_LAYER_TRANSPARENT },
843
844 { SMB_VFS_OP(gpfsacl_sys_acl_set_fd),
845 SMB_VFS_OP_SYS_ACL_SET_FD,
846 SMB_VFS_LAYER_TRANSPARENT },
847
848 { SMB_VFS_OP(gpfsacl_sys_acl_delete_def_file),
849 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
850 SMB_VFS_LAYER_TRANSPARENT },
851
852 { SMB_VFS_OP(vfs_gpfs_chmod),
853 SMB_VFS_OP_CHMOD,
854 SMB_VFS_LAYER_TRANSPARENT },
855
856 { SMB_VFS_OP(vfs_gpfs_fchmod),
857 SMB_VFS_OP_FCHMOD,
858 SMB_VFS_LAYER_TRANSPARENT },
859
860 { SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP }
861
862 };
863
864
865 NTSTATUS vfs_gpfs_init(void);
866 NTSTATUS vfs_gpfs_init(void)
867 {
868 init_gpfs();
869
870 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
871 gpfs_op_tuples);
872 }
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