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reject ACLs with DESC_DACL_PROTECTED on GPFS
[Samba.git] / source3 / modules / vfs_gpfs.c
blobffa8db00b3fa2eb6e546dfcc20fb87b528ad0069
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_close(vfs_handle_struct *handle, files_struct *fsp)
53 {
54 if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) {
55 set_gpfs_sharemode(fsp, 0, 0);
56 }
57
58 return SMB_VFS_NEXT_CLOSE(handle, fsp);
59 }
60
61 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
62 int leasetype)
63 {
64 int ret;
65
66 START_PROFILE(syscall_linux_setlease);
67
68 if ( linux_set_lease_sighandler(fsp->fh->fd) == -1)
69 return -1;
70
71 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
72
73 if ( ret < 0 ) {
74 /* This must have come from GPFS not being available */
75 /* or some other error, hence call the default */
76 ret = linux_setlease(fsp->fh->fd, leasetype);
77 }
78
79 END_PROFILE(syscall_linux_setlease);
80
81 return ret;
82 }
83
84 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
85 const char *path,
86 const char *name,
87 TALLOC_CTX *mem_ctx,
88 char **found_name)
89 {
90 int result;
91 char *full_path;
92 char real_pathname[PATH_MAX+1];
93 int buflen;
94
95 full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
96 if (full_path == NULL) {
97 errno = ENOMEM;
98 return -1;
99 }
100
101 buflen = sizeof(real_pathname) - 1;
102
103 result = smbd_gpfs_get_realfilename_path(full_path, real_pathname,
104 &buflen);
105
106 TALLOC_FREE(full_path);
107
108 if ((result == -1) && (errno == ENOSYS)) {
109 return SMB_VFS_NEXT_GET_REAL_FILENAME(
110 handle, path, name, mem_ctx, found_name);
111 }
112
113 if (result == -1) {
114 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
115 strerror(errno)));
116 return -1;
117 }
118
119 /*
120 * GPFS does not necessarily null-terminate the returned path
121 * but instead returns the buffer length in buflen.
122 */
123
124 if (buflen < sizeof(real_pathname)) {
125 real_pathname[buflen] = '\0';
126 } else {
127 real_pathname[sizeof(real_pathname)-1] = '\0';
128 }
129
130 DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
131 path, name, real_pathname));
132
133 name = strrchr_m(real_pathname, '/');
134 if (name == NULL) {
135 errno = ENOENT;
136 return -1;
137 }
138
139 *found_name = talloc_strdup(mem_ctx, name+1);
140 if (*found_name == NULL) {
141 errno = ENOMEM;
142 return -1;
143 }
144
145 return 0;
146 }
147
148 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
149 {
150 int i;
151 if (gacl==NULL)
152 {
153 DEBUG(0, ("gpfs acl is NULL\n"));
154 return;
155 }
156
157 DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n",
158 gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len));
159 for(i=0; i<gacl->acl_nace; i++)
160 {
161 struct gpfs_ace_v4 *gace = gacl->ace_v4 + i;
162 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n",
163 i, gace->aceType, gace->aceFlags, gace->aceMask,
164 gace->aceIFlags, gace->aceWho));
165 }
166 }
167
168 static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type)
169 {
170 struct gpfs_acl *acl;
171 size_t len = 200;
172 int ret;
173 TALLOC_CTX *mem_ctx = talloc_tos();
174
175 acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len);
176 if (acl == NULL) {
177 errno = ENOMEM;
178 return NULL;
179 }
180
181 acl->acl_len = len;
182 acl->acl_level = 0;
183 acl->acl_version = 0;
184 acl->acl_type = type;
185
186 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
187 if ((ret != 0) && (errno == ENOSPC)) {
188 struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE(
189 mem_ctx, acl->acl_len + sizeof(struct gpfs_acl));
190 if (new_acl == NULL) {
191 errno = ENOMEM;
192 return NULL;
193 }
194
195 new_acl->acl_len = acl->acl_len;
196 new_acl->acl_level = acl->acl_level;
197 new_acl->acl_version = acl->acl_version;
198 new_acl->acl_type = acl->acl_type;
199 acl = new_acl;
200
201 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
202 }
203 if (ret != 0)
204 {
205 DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno)));
206 return NULL;
207 }
208
209 return acl;
210 }
211
212 /* Tries to get nfs4 acls and returns SMB ACL allocated.
213 * On failure returns 1 if it got non-NFSv4 ACL to prompt
214 * retry with POSIX ACL checks.
215 * On failure returns -1 if there is system (GPFS) error, check errno.
216 * Returns 0 on success
217 */
218 static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl)
219 {
220 int i;
221 struct gpfs_acl *gacl = NULL;
222 DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
223
224 /* First get the real acl length */
225 gacl = gpfs_getacl_alloc(fname, 0);
226 if (gacl == NULL) {
227 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
228 fname, strerror(errno)));
229 return -1;
230 }
231
232 if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
233 DEBUG(10, ("Got non-nfsv4 acl\n"));
234 /* Retry with POSIX ACLs check */
235 return 1;
236 }
237
238 *ppacl = smb_create_smb4acl();
239
240 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
241 gacl->acl_len, gacl->acl_level, gacl->acl_version,
242 gacl->acl_nace));
243
244 for (i=0; i<gacl->acl_nace; i++) {
245 struct gpfs_ace_v4 *gace = &gacl->ace_v4[i];
246 SMB_ACE4PROP_T smbace;
247 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
248 "who: %d\n", gace->aceType, gace->aceIFlags,
249 gace->aceFlags, gace->aceMask, gace->aceWho));
250
251 ZERO_STRUCT(smbace);
252 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
253 smbace.flags |= SMB_ACE4_ID_SPECIAL;
254 switch (gace->aceWho) {
255 case ACE4_SPECIAL_OWNER:
256 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
257 break;
258 case ACE4_SPECIAL_GROUP:
259 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
260 break;
261 case ACE4_SPECIAL_EVERYONE:
262 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
263 break;
264 default:
265 DEBUG(8, ("invalid special gpfs id %d "
266 "ignored\n", gace->aceWho));
267 continue; /* don't add it */
268 }
269 } else {
270 if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
271 smbace.who.gid = gace->aceWho;
272 else
273 smbace.who.uid = gace->aceWho;
274 }
275
276 /* remove redundent deny entries */
277 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
278 struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1];
279 if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
280 prev->aceFlags == gace->aceFlags &&
281 prev->aceIFlags == gace->aceIFlags &&
282 (gace->aceMask & prev->aceMask) == 0 &&
283 gace->aceWho == prev->aceWho) {
284 /* its redundent - skip it */
285 continue;
286 }
287 }
288
289 smbace.aceType = gace->aceType;
290 smbace.aceFlags = gace->aceFlags;
291 smbace.aceMask = gace->aceMask;
292 smb_add_ace4(*ppacl, &smbace);
293 }
294
295 return 0;
296 }
297
298 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
299 files_struct *fsp, uint32 security_info,
300 SEC_DESC **ppdesc)
301 {
302 SMB4ACL_T *pacl = NULL;
303 int result;
304
305 *ppdesc = NULL;
306 result = gpfs_get_nfs4_acl(fsp->fsp_name, &pacl);
307
308 if (result == 0)
309 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
310
311 if (result > 0) {
312 DEBUG(10, ("retrying with posix acl...\n"));
313 return posix_fget_nt_acl(fsp, security_info, ppdesc);
314 }
315
316 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
317 return map_nt_error_from_unix(errno);
318 }
319
320 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
321 const char *name,
322 uint32 security_info, SEC_DESC **ppdesc)
323 {
324 SMB4ACL_T *pacl = NULL;
325 int result;
326
327 *ppdesc = NULL;
328 result = gpfs_get_nfs4_acl(name, &pacl);
329
330 if (result == 0)
331 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl);
332
333 if (result > 0) {
334 DEBUG(10, ("retrying with posix acl...\n"));
335 return posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
336 }
337
338 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
339 return map_nt_error_from_unix(errno);
340 }
341
342 static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
343 {
344 int ret;
345 gpfs_aclLen_t gacl_len;
346 SMB4ACE_T *smbace;
347 struct gpfs_acl *gacl;
348 TALLOC_CTX *mem_ctx = talloc_tos();
349
350 gacl_len = sizeof(struct gpfs_acl) +
351 (smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t);
352
353 gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
354 if (gacl == NULL) {
355 DEBUG(0, ("talloc failed\n"));
356 errno = ENOMEM;
357 return False;
358 }
359
360 gacl->acl_len = gacl_len;
361 gacl->acl_level = 0;
362 gacl->acl_version = GPFS_ACL_VERSION_NFS4;
363 gacl->acl_type = GPFS_ACL_TYPE_NFS4;
364 gacl->acl_nace = 0; /* change later... */
365
366 for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
367 struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace];
368 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
369
370 gace->aceType = aceprop->aceType;
371 gace->aceFlags = aceprop->aceFlags;
372 gace->aceMask = aceprop->aceMask;
373
374 /*
375 * GPFS can't distinguish between WRITE and APPEND on
376 * files, so one being set without the other is an
377 * error. Sorry for the many ()'s :-)
378 */
379
380 if (!fsp->is_directory
381 &&
382 ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
383 && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
384 ||
385 (((gace->aceMask & ACE4_MASK_WRITE) != 0)
386 && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
387 &&
388 lp_parm_bool(fsp->conn->params->service, "gpfs",
389 "merge_writeappend", True)) {
390 DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
391 "WRITE^APPEND, setting WRITE|APPEND\n",
392 fsp->fsp_name));
393 gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
394 }
395
396 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
397
398 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
399 {
400 switch(aceprop->who.special_id)
401 {
402 case SMB_ACE4_WHO_EVERYONE:
403 gace->aceWho = ACE4_SPECIAL_EVERYONE;
404 break;
405 case SMB_ACE4_WHO_OWNER:
406 gace->aceWho = ACE4_SPECIAL_OWNER;
407 break;
408 case SMB_ACE4_WHO_GROUP:
409 gace->aceWho = ACE4_SPECIAL_GROUP;
410 break;
411 default:
412 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
413 continue; /* don't add it !!! */
414 }
415 } else {
416 /* just only for the type safety... */
417 if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
418 gace->aceWho = aceprop->who.gid;
419 else
420 gace->aceWho = aceprop->who.uid;
421 }
422
423 gacl->acl_nace++;
424 }
425
426 ret = smbd_gpfs_putacl(fsp->fsp_name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
427 if (ret != 0) {
428 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
429 gpfs_dumpacl(8, gacl);
430 return False;
431 }
432
433 DEBUG(10, ("gpfs_putacl succeeded\n"));
434 return True;
435 }
436
437 static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
438 {
439 struct gpfs_acl *acl;
440 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
441
442 acl = gpfs_getacl_alloc(fsp->fsp_name, 0);
443 if (acl == NULL)
444 return result;
445
446 if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
447 {
448 if ((psd->type&SEC_DESC_DACL_PROTECTED)) {
449 DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
450 return NT_STATUS_NOT_SUPPORTED;
451 }
452
453 result = smb_set_nt_acl_nfs4(
454 fsp, security_info_sent, psd,
455 gpfsacl_process_smbacl);
456 } else { /* assume POSIX ACL - by default... */
457 result = set_nt_acl(fsp, security_info_sent, psd);
458 }
459
460 return result;
461 }
462
463 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
464 {
465 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
466 }
467
468 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
469 {
470 SMB_ACL_T result;
471 int i;
472
473 result = sys_acl_init(pacl->acl_nace);
474 if (result == NULL) {
475 errno = ENOMEM;
476 return NULL;
477 }
478
479 result->count = pacl->acl_nace;
480
481 for (i=0; i<pacl->acl_nace; i++) {
482 struct smb_acl_entry *ace = &result->acl[i];
483 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
484
485 DEBUG(10, ("Converting type %d id %lu perm %x\n",
486 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
487 (int)g_ace->ace_perm));
488
489 switch (g_ace->ace_type) {
490 case GPFS_ACL_USER:
491 ace->a_type = SMB_ACL_USER;
492 ace->uid = (uid_t)g_ace->ace_who;
493 break;
494 case GPFS_ACL_USER_OBJ:
495 ace->a_type = SMB_ACL_USER_OBJ;
496 break;
497 case GPFS_ACL_GROUP:
498 ace->a_type = SMB_ACL_GROUP;
499 ace->gid = (gid_t)g_ace->ace_who;
500 break;
501 case GPFS_ACL_GROUP_OBJ:
502 ace->a_type = SMB_ACL_GROUP_OBJ;
503 break;
504 case GPFS_ACL_OTHER:
505 ace->a_type = SMB_ACL_OTHER;
506 break;
507 case GPFS_ACL_MASK:
508 ace->a_type = SMB_ACL_MASK;
509 break;
510 default:
511 DEBUG(10, ("Got invalid ace_type: %d\n",
512 g_ace->ace_type));
513 errno = EINVAL;
514 SAFE_FREE(result);
515 return NULL;
516 }
517
518 ace->a_perm = 0;
519 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
520 SMB_ACL_READ : 0;
521 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
522 SMB_ACL_WRITE : 0;
523 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
524 SMB_ACL_EXECUTE : 0;
525
526 DEBUGADD(10, ("Converted to %d perm %x\n",
527 ace->a_type, ace->a_perm));
528 }
529
530 return result;
531 }
532
533 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
534 {
535 struct gpfs_acl *pacl;
536 SMB_ACL_T result = NULL;
537
538 pacl = gpfs_getacl_alloc(path, type);
539
540 if (pacl == NULL) {
541 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
542 path, strerror(errno)));
543 if (errno == 0) {
544 errno = EINVAL;
545 }
546 goto done;
547 }
548
549 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
550 DEBUG(10, ("Got acl version %d, expected %d\n",
551 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
552 errno = EINVAL;
553 goto done;
554 }
555
556 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
557 pacl->acl_len, pacl->acl_level, pacl->acl_version,
558 pacl->acl_nace));
559
560 result = gpfs2smb_acl(pacl);
561 if (result == NULL) {
562 goto done;
563 }
564
565 done:
566
567 if (errno != 0) {
568 SAFE_FREE(result);
569 }
570 return result;
571 }
572
573 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
574 const char *path_p,
575 SMB_ACL_TYPE_T type)
576 {
577 gpfs_aclType_t gpfs_type;
578
579 switch(type) {
580 case SMB_ACL_TYPE_ACCESS:
581 gpfs_type = GPFS_ACL_TYPE_ACCESS;
582 break;
583 case SMB_ACL_TYPE_DEFAULT:
584 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
585 break;
586 default:
587 DEBUG(0, ("Got invalid type: %d\n", type));
588 smb_panic("exiting");
589 }
590
591 return gpfsacl_get_posix_acl(path_p, gpfs_type);
592 }
593
594 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
595 files_struct *fsp)
596 {
597 return gpfsacl_get_posix_acl(fsp->fsp_name, GPFS_ACL_TYPE_ACCESS);
598 }
599
600 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
601 SMB_ACL_TYPE_T type)
602 {
603 gpfs_aclLen_t len;
604 struct gpfs_acl *result;
605 int i;
606 union gpfs_ace_union
607 {
608 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
609 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
610 };
611
612 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
613
614 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
615 (pacl->count)*sizeof(gpfs_ace_v1_t);
616
617 result = (struct gpfs_acl *)SMB_MALLOC(len);
618 if (result == NULL) {
619 errno = ENOMEM;
620 return result;
621 }
622
623 result->acl_len = len;
624 result->acl_level = 0;
625 result->acl_version = GPFS_ACL_VERSION_POSIX;
626 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
627 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
628 result->acl_nace = pacl->count;
629
630 for (i=0; i<pacl->count; i++) {
631 const struct smb_acl_entry *ace = &pacl->acl[i];
632 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
633
634 DEBUG(10, ("Converting type %d perm %x\n",
635 (int)ace->a_type, (int)ace->a_perm));
636
637 g_ace->ace_perm = 0;
638
639 switch(ace->a_type) {
640 case SMB_ACL_USER:
641 g_ace->ace_type = GPFS_ACL_USER;
642 g_ace->ace_who = (gpfs_uid_t)ace->uid;
643 break;
644 case SMB_ACL_USER_OBJ:
645 g_ace->ace_type = GPFS_ACL_USER_OBJ;
646 g_ace->ace_perm |= ACL_PERM_CONTROL;
647 g_ace->ace_who = 0;
648 break;
649 case SMB_ACL_GROUP:
650 g_ace->ace_type = GPFS_ACL_GROUP;
651 g_ace->ace_who = (gpfs_uid_t)ace->gid;
652 break;
653 case SMB_ACL_GROUP_OBJ:
654 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
655 g_ace->ace_who = 0;
656 break;
657 case SMB_ACL_MASK:
658 g_ace->ace_type = GPFS_ACL_MASK;
659 g_ace->ace_perm = 0x8f;
660 g_ace->ace_who = 0;
661 break;
662 case SMB_ACL_OTHER:
663 g_ace->ace_type = GPFS_ACL_OTHER;
664 g_ace->ace_who = 0;
665 break;
666 default:
667 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
668 errno = EINVAL;
669 SAFE_FREE(result);
670 return NULL;
671 }
672
673 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
674 ACL_PERM_READ : 0;
675 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
676 ACL_PERM_WRITE : 0;
677 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
678 ACL_PERM_EXECUTE : 0;
679
680 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
681 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
682 }
683
684 return result;
685 }
686
687 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
688 const char *name,
689 SMB_ACL_TYPE_T type,
690 SMB_ACL_T theacl)
691 {
692 struct gpfs_acl *gpfs_acl;
693 int result;
694
695 gpfs_acl = smb2gpfs_acl(theacl, type);
696 if (gpfs_acl == NULL) {
697 return -1;
698 }
699
700 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
701
702 SAFE_FREE(gpfs_acl);
703 return result;
704 }
705
706 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
707 files_struct *fsp,
708 SMB_ACL_T theacl)
709 {
710 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name, SMB_ACL_TYPE_ACCESS, theacl);
711 }
712
713 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
714 const char *path)
715 {
716 errno = ENOTSUP;
717 return -1;
718 }
719
720 /*
721 * Assumed: mode bits are shiftable and standard
722 * Output: the new aceMask field for an smb nfs4 ace
723 */
724 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
725 {
726 const uint32 posix_nfs4map[3] = {
727 SMB_ACE4_EXECUTE, /* execute */
728 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
729 SMB_ACE4_READ_DATA /* read */
730 };
731 int i;
732 uint32_t posix_mask = 0x01;
733 uint32_t posix_bit;
734 uint32_t nfs4_bits;
735
736 for(i=0; i<3; i++) {
737 nfs4_bits = posix_nfs4map[i];
738 posix_bit = rwx & posix_mask;
739
740 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
741 if (posix_bit)
742 aceMask |= nfs4_bits;
743 else
744 aceMask &= ~nfs4_bits;
745 } else {
746 /* add deny bits when suitable */
747 if (!posix_bit)
748 aceMask |= nfs4_bits;
749 else
750 aceMask &= ~nfs4_bits;
751 } /* other ace types are unexpected */
752
753 posix_mask <<= 1;
754 }
755
756 return aceMask;
757 }
758
759 static int gpfsacl_emu_chmod(const char *path, mode_t mode)
760 {
761 SMB4ACL_T *pacl = NULL;
762 int result;
763 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
764 int i;
765 files_struct fake_fsp; /* TODO: rationalize parametrization */
766 SMB4ACE_T *smbace;
767
768 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
769
770 result = gpfs_get_nfs4_acl(path, &pacl);
771 if (result)
772 return result;
773
774 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
775 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
776 }
777
778 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
779 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
780 uint32_t specid = ace->who.special_id;
781
782 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
783 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
784 specid <= SMB_ACE4_WHO_EVERYONE) {
785
786 uint32_t newMask;
787
788 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
789 haveAllowEntry[specid] = True;
790
791 /* mode >> 6 for @owner, mode >> 3 for @group,
792 * mode >> 0 for @everyone */
793 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
794 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
795 if (ace->aceMask!=newMask) {
796 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
797 path, ace->aceMask, newMask, specid));
798 }
799 ace->aceMask = newMask;
800 }
801 }
802
803 /* make sure we have at least ALLOW entries
804 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
805 * - if necessary
806 */
807 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
808 SMB_ACE4PROP_T ace;
809
810 if (haveAllowEntry[i]==True)
811 continue;
812
813 ZERO_STRUCT(ace);
814 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
815 ace.flags |= SMB_ACE4_ID_SPECIAL;
816 ace.who.special_id = i;
817
818 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
819 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
820
821 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
822 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
823
824 /* don't add unnecessary aces */
825 if (!ace.aceMask)
826 continue;
827
828 /* we add it to the END - as windows expects allow aces */
829 smb_add_ace4(pacl, &ace);
830 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
831 path, mode, i, ace.aceMask));
832 }
833
834 /* don't add complementary DENY ACEs here */
835 ZERO_STRUCT(fake_fsp);
836 fake_fsp.fsp_name = (char *)path; /* no file_new is needed here */
837
838 /* put the acl */
839 if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False)
840 return -1;
841 return 0; /* ok for [f]chmod */
842 }
843
844 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
845 {
846 SMB_STRUCT_STAT st;
847 int rc;
848
849 if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) {
850 return -1;
851 }
852
853 /* avoid chmod() if possible, to preserve acls */
854 if ((st.st_ex_mode & ~S_IFMT) == mode) {
855 return 0;
856 }
857
858 rc = gpfsacl_emu_chmod(path, mode);
859 if (rc == 1)
860 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
861 return rc;
862 }
863
864 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
865 {
866 SMB_STRUCT_STAT st;
867 int rc;
868
869 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
870 return -1;
871 }
872
873 /* avoid chmod() if possible, to preserve acls */
874 if ((st.st_ex_mode & ~S_IFMT) == mode) {
875 return 0;
876 }
877
878 rc = gpfsacl_emu_chmod(fsp->fsp_name, mode);
879 if (rc == 1)
880 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
881 return rc;
882 }
883
884 static int gpfs_set_xattr(struct vfs_handle_struct *handle, const char *path,
885 const char *name, const void *value, size_t size, int flags){
886 const char *attrstr = value;
887 unsigned int dosmode=0;
888 struct gpfs_winattr attrs;
889 int ret = 0;
890
891 DEBUG(10, ("gpfs_set_xattr: %s \n",path));
892
893 /* Only handle DOS Attributes */
894 if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
895 DEBUG(1, ("gpfs_set_xattr:name is %s\n",name));
896 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
897 }
898
899 if (size < 2 || attrstr[0] != '0' || attrstr[1] != 'x' ||
900 sscanf(attrstr, "%x", &dosmode) != 1) {
901 DEBUG(1,("gpfs_set_xattr: Trying to set badly formed DOSATTRIB on file %s - %s\n", path, attrstr));
902 return False;
903 }
904
905 attrs.winAttrs = 0;
906 /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
907 if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
908 attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
909 }
910 if (dosmode & FILE_ATTRIBUTE_HIDDEN){
911 attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
912 }
913 if (dosmode & FILE_ATTRIBUTE_SYSTEM){
914 attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
915 }
916 if (dosmode & FILE_ATTRIBUTE_READONLY){
917 attrs.winAttrs |= GPFS_WINATTR_READONLY;
918 }
919
920
921 ret = set_gpfs_winattrs(CONST_DISCARD(char *, path),
922 GPFS_WINATTR_SET_ATTRS, &attrs);
923 if ( ret == -1){
924 DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
925 return -1;
926 }
927
928 DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
929 return 0;
930 }
931
932 static size_t gpfs_get_xattr(struct vfs_handle_struct *handle, const char *path,
933 const char *name, void *value, size_t size){
934 char *attrstr = value;
935 unsigned int dosmode = 0;
936 struct gpfs_winattr attrs;
937 int ret = 0;
938
939 DEBUG(10, ("gpfs_get_xattr: %s \n",path));
940
941 /* Only handle DOS Attributes */
942 if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
943 DEBUG(1, ("gpfs_get_xattr:name is %s\n",name));
944 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
945 }
946
947 ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
948 if ( ret == -1){
949 DEBUG(1, ("gpfs_get_xattr: Get GPFS attributes failed: %d\n",ret));
950 return -1;
951 }
952
953 DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
954
955 /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
956 if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
957 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
958 }
959 if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
960 dosmode |= FILE_ATTRIBUTE_HIDDEN;
961 }
962 if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
963 dosmode |= FILE_ATTRIBUTE_SYSTEM;
964 }
965 if (attrs.winAttrs & GPFS_WINATTR_READONLY){
966 dosmode |= FILE_ATTRIBUTE_READONLY;
967 }
968
969 snprintf(attrstr, size, "0x%x", dosmode & SAMBA_ATTRIBUTES_MASK);
970 DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
971 return size;
972 }
973
974 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
975 struct smb_filename *smb_fname)
976 {
977 struct gpfs_winattr attrs;
978 char *fname = NULL;
979 NTSTATUS status;
980 int ret;
981
982 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
983 if (ret == -1) {
984 return -1;
985 }
986 status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
987 if (!NT_STATUS_IS_OK) {
988 errno = map_errno_from_nt_status(status);
989 return -1;
990 }
991 ret = get_gpfs_winattrs(CONST_DISCARD(char *, fname), &attrs);
992 TALLOC_FREE(fname);
993 if (ret == 0) {
994 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
995 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
996 }
997 return 0;
998 }
999
1000 static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
1001 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1002 {
1003 struct gpfs_winattr attrs;
1004 int ret;
1005
1006 ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1007 if (ret == -1) {
1008 return -1;
1009 }
1010 if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
1011 return 0;
1012 }
1013 ret = smbd_fget_gpfs_winattrs(fsp->fh->fd, &attrs);
1014 if (ret == 0) {
1015 sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1016 sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1017 }
1018 return 0;
1019 }
1020
1021 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1022 struct smb_filename *smb_fname)
1023 {
1024 struct gpfs_winattr attrs;
1025 char *path = NULL;
1026 NTSTATUS status;
1027 int ret;
1028
1029 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1030 if (ret == -1) {
1031 return -1;
1032 }
1033 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1034 if (!NT_STATUS_IS_OK) {
1035 errno = map_errno_from_nt_status(status);
1036 return -1;
1037 }
1038 ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
1039 TALLOC_FREE(path);
1040 if (ret == 0) {
1041 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1042 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1043 }
1044 return 0;
1045 }
1046
1047 /* VFS operations structure */
1048
1049 static vfs_op_tuple gpfs_op_tuples[] = {
1050
1051 { SMB_VFS_OP(vfs_gpfs_kernel_flock),
1052 SMB_VFS_OP_KERNEL_FLOCK,
1053 SMB_VFS_LAYER_OPAQUE },
1054
1055 { SMB_VFS_OP(vfs_gpfs_setlease),
1056 SMB_VFS_OP_LINUX_SETLEASE,
1057 SMB_VFS_LAYER_OPAQUE },
1058
1059 { SMB_VFS_OP(vfs_gpfs_get_real_filename),
1060 SMB_VFS_OP_GET_REAL_FILENAME,
1061 SMB_VFS_LAYER_OPAQUE },
1062
1063 { SMB_VFS_OP(gpfsacl_fget_nt_acl),
1064 SMB_VFS_OP_FGET_NT_ACL,
1065 SMB_VFS_LAYER_TRANSPARENT },
1066
1067 { SMB_VFS_OP(gpfsacl_get_nt_acl),
1068 SMB_VFS_OP_GET_NT_ACL,
1069 SMB_VFS_LAYER_TRANSPARENT },
1070
1071 { SMB_VFS_OP(gpfsacl_fset_nt_acl),
1072 SMB_VFS_OP_FSET_NT_ACL,
1073 SMB_VFS_LAYER_TRANSPARENT },
1074
1075 { SMB_VFS_OP(gpfsacl_sys_acl_get_file),
1076 SMB_VFS_OP_SYS_ACL_GET_FILE,
1077 SMB_VFS_LAYER_TRANSPARENT },
1078
1079 { SMB_VFS_OP(gpfsacl_sys_acl_get_fd),
1080 SMB_VFS_OP_SYS_ACL_GET_FD,
1081 SMB_VFS_LAYER_TRANSPARENT },
1082
1083 { SMB_VFS_OP(gpfsacl_sys_acl_set_file),
1084 SMB_VFS_OP_SYS_ACL_SET_FILE,
1085 SMB_VFS_LAYER_TRANSPARENT },
1086
1087 { SMB_VFS_OP(gpfsacl_sys_acl_set_fd),
1088 SMB_VFS_OP_SYS_ACL_SET_FD,
1089 SMB_VFS_LAYER_TRANSPARENT },
1090
1091 { SMB_VFS_OP(gpfsacl_sys_acl_delete_def_file),
1092 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
1093 SMB_VFS_LAYER_TRANSPARENT },
1094
1095 { SMB_VFS_OP(vfs_gpfs_chmod),
1096 SMB_VFS_OP_CHMOD,
1097 SMB_VFS_LAYER_TRANSPARENT },
1098
1099 { SMB_VFS_OP(vfs_gpfs_fchmod),
1100 SMB_VFS_OP_FCHMOD,
1101 SMB_VFS_LAYER_TRANSPARENT },
1102
1103 { SMB_VFS_OP(vfs_gpfs_close),
1104 SMB_VFS_OP_CLOSE,
1105 SMB_VFS_LAYER_TRANSPARENT },
1106
1107 { SMB_VFS_OP(gpfs_set_xattr),
1108 SMB_VFS_OP_SETXATTR,
1109 SMB_VFS_LAYER_TRANSPARENT },
1110
1111 { SMB_VFS_OP(gpfs_get_xattr),
1112 SMB_VFS_OP_GETXATTR,
1113 SMB_VFS_LAYER_TRANSPARENT },
1114
1115 { SMB_VFS_OP(vfs_gpfs_stat),
1116 SMB_VFS_OP_STAT,
1117 SMB_VFS_LAYER_TRANSPARENT },
1118
1119 { SMB_VFS_OP(vfs_gpfs_fstat),
1120 SMB_VFS_OP_FSTAT,
1121 SMB_VFS_LAYER_TRANSPARENT },
1122
1123 { SMB_VFS_OP(vfs_gpfs_lstat),
1124 SMB_VFS_OP_LSTAT,
1125 SMB_VFS_LAYER_TRANSPARENT },
1126
1127 { SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP }
1128
1129 };
1130
1131
1132 NTSTATUS vfs_gpfs_init(void);
1133 NTSTATUS vfs_gpfs_init(void)
1134 {
1135 init_gpfs();
1136
1137 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
1138 gpfs_op_tuples);
1139 }
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