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s4-drs: lock down key DRS calls
[Samba/aatanasov.git] / source3 / modules / vfs_gpfs.c
blob3660bb2d3a085df2df28dfa0b8bfe1c6dfaa9308
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->base_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_str_dbg(fsp)));
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->base_name,
427 GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
428 if (ret != 0) {
429 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
430 gpfs_dumpacl(8, gacl);
431 return False;
432 }
433
434 DEBUG(10, ("gpfs_putacl succeeded\n"));
435 return True;
436 }
437
438 static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
439 {
440 struct gpfs_acl *acl;
441 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
442
443 acl = gpfs_getacl_alloc(fsp->fsp_name->base_name, 0);
444 if (acl == NULL)
445 return result;
446
447 if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
448 {
449 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
450 "refuse_dacl_protected", false)
451 && (psd->type&SEC_DESC_DACL_PROTECTED)) {
452 DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
453 return NT_STATUS_NOT_SUPPORTED;
454 }
455
456 result = smb_set_nt_acl_nfs4(
457 fsp, security_info_sent, psd,
458 gpfsacl_process_smbacl);
459 } else { /* assume POSIX ACL - by default... */
460 result = set_nt_acl(fsp, security_info_sent, psd);
461 }
462
463 return result;
464 }
465
466 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
467 {
468 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
469 }
470
471 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
472 {
473 SMB_ACL_T result;
474 int i;
475
476 result = sys_acl_init(pacl->acl_nace);
477 if (result == NULL) {
478 errno = ENOMEM;
479 return NULL;
480 }
481
482 result->count = pacl->acl_nace;
483
484 for (i=0; i<pacl->acl_nace; i++) {
485 struct smb_acl_entry *ace = &result->acl[i];
486 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
487
488 DEBUG(10, ("Converting type %d id %lu perm %x\n",
489 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
490 (int)g_ace->ace_perm));
491
492 switch (g_ace->ace_type) {
493 case GPFS_ACL_USER:
494 ace->a_type = SMB_ACL_USER;
495 ace->uid = (uid_t)g_ace->ace_who;
496 break;
497 case GPFS_ACL_USER_OBJ:
498 ace->a_type = SMB_ACL_USER_OBJ;
499 break;
500 case GPFS_ACL_GROUP:
501 ace->a_type = SMB_ACL_GROUP;
502 ace->gid = (gid_t)g_ace->ace_who;
503 break;
504 case GPFS_ACL_GROUP_OBJ:
505 ace->a_type = SMB_ACL_GROUP_OBJ;
506 break;
507 case GPFS_ACL_OTHER:
508 ace->a_type = SMB_ACL_OTHER;
509 break;
510 case GPFS_ACL_MASK:
511 ace->a_type = SMB_ACL_MASK;
512 break;
513 default:
514 DEBUG(10, ("Got invalid ace_type: %d\n",
515 g_ace->ace_type));
516 errno = EINVAL;
517 SAFE_FREE(result);
518 return NULL;
519 }
520
521 ace->a_perm = 0;
522 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
523 SMB_ACL_READ : 0;
524 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
525 SMB_ACL_WRITE : 0;
526 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
527 SMB_ACL_EXECUTE : 0;
528
529 DEBUGADD(10, ("Converted to %d perm %x\n",
530 ace->a_type, ace->a_perm));
531 }
532
533 return result;
534 }
535
536 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
537 {
538 struct gpfs_acl *pacl;
539 SMB_ACL_T result = NULL;
540
541 pacl = gpfs_getacl_alloc(path, type);
542
543 if (pacl == NULL) {
544 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
545 path, strerror(errno)));
546 if (errno == 0) {
547 errno = EINVAL;
548 }
549 goto done;
550 }
551
552 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
553 DEBUG(10, ("Got acl version %d, expected %d\n",
554 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
555 errno = EINVAL;
556 goto done;
557 }
558
559 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
560 pacl->acl_len, pacl->acl_level, pacl->acl_version,
561 pacl->acl_nace));
562
563 result = gpfs2smb_acl(pacl);
564 if (result == NULL) {
565 goto done;
566 }
567
568 done:
569
570 if (errno != 0) {
571 SAFE_FREE(result);
572 }
573 return result;
574 }
575
576 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
577 const char *path_p,
578 SMB_ACL_TYPE_T type)
579 {
580 gpfs_aclType_t gpfs_type;
581
582 switch(type) {
583 case SMB_ACL_TYPE_ACCESS:
584 gpfs_type = GPFS_ACL_TYPE_ACCESS;
585 break;
586 case SMB_ACL_TYPE_DEFAULT:
587 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
588 break;
589 default:
590 DEBUG(0, ("Got invalid type: %d\n", type));
591 smb_panic("exiting");
592 }
593
594 return gpfsacl_get_posix_acl(path_p, gpfs_type);
595 }
596
597 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
598 files_struct *fsp)
599 {
600 return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
601 GPFS_ACL_TYPE_ACCESS);
602 }
603
604 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
605 SMB_ACL_TYPE_T type)
606 {
607 gpfs_aclLen_t len;
608 struct gpfs_acl *result;
609 int i;
610 union gpfs_ace_union
611 {
612 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
613 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
614 };
615
616 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
617
618 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
619 (pacl->count)*sizeof(gpfs_ace_v1_t);
620
621 result = (struct gpfs_acl *)SMB_MALLOC(len);
622 if (result == NULL) {
623 errno = ENOMEM;
624 return result;
625 }
626
627 result->acl_len = len;
628 result->acl_level = 0;
629 result->acl_version = GPFS_ACL_VERSION_POSIX;
630 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
631 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
632 result->acl_nace = pacl->count;
633
634 for (i=0; i<pacl->count; i++) {
635 const struct smb_acl_entry *ace = &pacl->acl[i];
636 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
637
638 DEBUG(10, ("Converting type %d perm %x\n",
639 (int)ace->a_type, (int)ace->a_perm));
640
641 g_ace->ace_perm = 0;
642
643 switch(ace->a_type) {
644 case SMB_ACL_USER:
645 g_ace->ace_type = GPFS_ACL_USER;
646 g_ace->ace_who = (gpfs_uid_t)ace->uid;
647 break;
648 case SMB_ACL_USER_OBJ:
649 g_ace->ace_type = GPFS_ACL_USER_OBJ;
650 g_ace->ace_perm |= ACL_PERM_CONTROL;
651 g_ace->ace_who = 0;
652 break;
653 case SMB_ACL_GROUP:
654 g_ace->ace_type = GPFS_ACL_GROUP;
655 g_ace->ace_who = (gpfs_uid_t)ace->gid;
656 break;
657 case SMB_ACL_GROUP_OBJ:
658 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
659 g_ace->ace_who = 0;
660 break;
661 case SMB_ACL_MASK:
662 g_ace->ace_type = GPFS_ACL_MASK;
663 g_ace->ace_perm = 0x8f;
664 g_ace->ace_who = 0;
665 break;
666 case SMB_ACL_OTHER:
667 g_ace->ace_type = GPFS_ACL_OTHER;
668 g_ace->ace_who = 0;
669 break;
670 default:
671 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
672 errno = EINVAL;
673 SAFE_FREE(result);
674 return NULL;
675 }
676
677 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
678 ACL_PERM_READ : 0;
679 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
680 ACL_PERM_WRITE : 0;
681 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
682 ACL_PERM_EXECUTE : 0;
683
684 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
685 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
686 }
687
688 return result;
689 }
690
691 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
692 const char *name,
693 SMB_ACL_TYPE_T type,
694 SMB_ACL_T theacl)
695 {
696 struct gpfs_acl *gpfs_acl;
697 int result;
698
699 gpfs_acl = smb2gpfs_acl(theacl, type);
700 if (gpfs_acl == NULL) {
701 return -1;
702 }
703
704 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
705
706 SAFE_FREE(gpfs_acl);
707 return result;
708 }
709
710 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
711 files_struct *fsp,
712 SMB_ACL_T theacl)
713 {
714 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
715 SMB_ACL_TYPE_ACCESS, theacl);
716 }
717
718 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
719 const char *path)
720 {
721 errno = ENOTSUP;
722 return -1;
723 }
724
725 /*
726 * Assumed: mode bits are shiftable and standard
727 * Output: the new aceMask field for an smb nfs4 ace
728 */
729 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
730 {
731 const uint32 posix_nfs4map[3] = {
732 SMB_ACE4_EXECUTE, /* execute */
733 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
734 SMB_ACE4_READ_DATA /* read */
735 };
736 int i;
737 uint32_t posix_mask = 0x01;
738 uint32_t posix_bit;
739 uint32_t nfs4_bits;
740
741 for(i=0; i<3; i++) {
742 nfs4_bits = posix_nfs4map[i];
743 posix_bit = rwx & posix_mask;
744
745 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
746 if (posix_bit)
747 aceMask |= nfs4_bits;
748 else
749 aceMask &= ~nfs4_bits;
750 } else {
751 /* add deny bits when suitable */
752 if (!posix_bit)
753 aceMask |= nfs4_bits;
754 else
755 aceMask &= ~nfs4_bits;
756 } /* other ace types are unexpected */
757
758 posix_mask <<= 1;
759 }
760
761 return aceMask;
762 }
763
764 static int gpfsacl_emu_chmod(const char *path, mode_t mode)
765 {
766 SMB4ACL_T *pacl = NULL;
767 int result;
768 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
769 int i;
770 files_struct fake_fsp; /* TODO: rationalize parametrization */
771 SMB4ACE_T *smbace;
772 struct smb_filename *smb_fname = NULL;
773 NTSTATUS status;
774
775 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
776
777 result = gpfs_get_nfs4_acl(path, &pacl);
778 if (result)
779 return result;
780
781 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
782 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
783 }
784
785 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
786 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
787 uint32_t specid = ace->who.special_id;
788
789 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
790 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
791 specid <= SMB_ACE4_WHO_EVERYONE) {
792
793 uint32_t newMask;
794
795 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
796 haveAllowEntry[specid] = True;
797
798 /* mode >> 6 for @owner, mode >> 3 for @group,
799 * mode >> 0 for @everyone */
800 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
801 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
802 if (ace->aceMask!=newMask) {
803 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
804 path, ace->aceMask, newMask, specid));
805 }
806 ace->aceMask = newMask;
807 }
808 }
809
810 /* make sure we have at least ALLOW entries
811 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
812 * - if necessary
813 */
814 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
815 SMB_ACE4PROP_T ace;
816
817 if (haveAllowEntry[i]==True)
818 continue;
819
820 ZERO_STRUCT(ace);
821 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
822 ace.flags |= SMB_ACE4_ID_SPECIAL;
823 ace.who.special_id = i;
824
825 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
826 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
827
828 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
829 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
830
831 /* don't add unnecessary aces */
832 if (!ace.aceMask)
833 continue;
834
835 /* we add it to the END - as windows expects allow aces */
836 smb_add_ace4(pacl, &ace);
837 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
838 path, mode, i, ace.aceMask));
839 }
840
841 /* don't add complementary DENY ACEs here */
842 ZERO_STRUCT(fake_fsp);
843 status = create_synthetic_smb_fname(talloc_tos(), path, NULL, NULL,
844 &fake_fsp.fsp_name);
845 if (!NT_STATUS_IS_OK(status)) {
846 errno = map_errno_from_nt_status(status);
847 return -1;
848 }
849 /* put the acl */
850 if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False) {
851 TALLOC_FREE(fake_fsp.fsp_name);
852 return -1;
853 }
854
855 TALLOC_FREE(fake_fsp.fsp_name);
856 return 0; /* ok for [f]chmod */
857 }
858
859 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
860 {
861 SMB_STRUCT_STAT st;
862 int rc;
863
864 if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) {
865 return -1;
866 }
867
868 /* avoid chmod() if possible, to preserve acls */
869 if ((st.st_ex_mode & ~S_IFMT) == mode) {
870 return 0;
871 }
872
873 rc = gpfsacl_emu_chmod(path, mode);
874 if (rc == 1)
875 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
876 return rc;
877 }
878
879 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
880 {
881 SMB_STRUCT_STAT st;
882 int rc;
883
884 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
885 return -1;
886 }
887
888 /* avoid chmod() if possible, to preserve acls */
889 if ((st.st_ex_mode & ~S_IFMT) == mode) {
890 return 0;
891 }
892
893 rc = gpfsacl_emu_chmod(fsp->fsp_name->base_name, mode);
894 if (rc == 1)
895 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
896 return rc;
897 }
898
899 static int gpfs_set_xattr(struct vfs_handle_struct *handle, const char *path,
900 const char *name, const void *value, size_t size, int flags){
901 const char *attrstr = value;
902 unsigned int dosmode=0;
903 struct gpfs_winattr attrs;
904 int ret = 0;
905
906 DEBUG(10, ("gpfs_set_xattr: %s \n",path));
907
908 /* Only handle DOS Attributes */
909 if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
910 DEBUG(1, ("gpfs_set_xattr:name is %s\n",name));
911 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
912 }
913
914 if (size < 2 || attrstr[0] != '0' || attrstr[1] != 'x' ||
915 sscanf(attrstr, "%x", &dosmode) != 1) {
916 DEBUG(1,("gpfs_set_xattr: Trying to set badly formed DOSATTRIB on file %s - %s\n", path, attrstr));
917 return False;
918 }
919
920 attrs.winAttrs = 0;
921 /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
922 if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
923 attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
924 }
925 if (dosmode & FILE_ATTRIBUTE_HIDDEN){
926 attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
927 }
928 if (dosmode & FILE_ATTRIBUTE_SYSTEM){
929 attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
930 }
931 if (dosmode & FILE_ATTRIBUTE_READONLY){
932 attrs.winAttrs |= GPFS_WINATTR_READONLY;
933 }
934
935
936 ret = set_gpfs_winattrs(CONST_DISCARD(char *, path),
937 GPFS_WINATTR_SET_ATTRS, &attrs);
938 if ( ret == -1){
939 DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
940 return -1;
941 }
942
943 DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
944 return 0;
945 }
946
947 static size_t gpfs_get_xattr(struct vfs_handle_struct *handle, const char *path,
948 const char *name, void *value, size_t size){
949 char *attrstr = value;
950 unsigned int dosmode = 0;
951 struct gpfs_winattr attrs;
952 int ret = 0;
953
954 DEBUG(10, ("gpfs_get_xattr: %s \n",path));
955
956 /* Only handle DOS Attributes */
957 if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
958 DEBUG(1, ("gpfs_get_xattr:name is %s\n",name));
959 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
960 }
961
962 ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
963 if ( ret == -1){
964 DEBUG(1, ("gpfs_get_xattr: Get GPFS attributes failed: %d\n",ret));
965 return -1;
966 }
967
968 DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
969
970 /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
971 if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
972 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
973 }
974 if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
975 dosmode |= FILE_ATTRIBUTE_HIDDEN;
976 }
977 if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
978 dosmode |= FILE_ATTRIBUTE_SYSTEM;
979 }
980 if (attrs.winAttrs & GPFS_WINATTR_READONLY){
981 dosmode |= FILE_ATTRIBUTE_READONLY;
982 }
983
984 snprintf(attrstr, size, "0x%x", dosmode & SAMBA_ATTRIBUTES_MASK);
985 DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
986 return size;
987 }
988
989 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
990 struct smb_filename *smb_fname)
991 {
992 struct gpfs_winattr attrs;
993 char *fname = NULL;
994 NTSTATUS status;
995 int ret;
996
997 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
998 if (ret == -1) {
999 return -1;
1000 }
1001 status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
1002 if (!NT_STATUS_IS_OK) {
1003 errno = map_errno_from_nt_status(status);
1004 return -1;
1005 }
1006 ret = get_gpfs_winattrs(CONST_DISCARD(char *, fname), &attrs);
1007 TALLOC_FREE(fname);
1008 if (ret == 0) {
1009 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1010 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1011 }
1012 return 0;
1013 }
1014
1015 static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
1016 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1017 {
1018 struct gpfs_winattr attrs;
1019 int ret;
1020
1021 ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1022 if (ret == -1) {
1023 return -1;
1024 }
1025 if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
1026 return 0;
1027 }
1028 ret = smbd_fget_gpfs_winattrs(fsp->fh->fd, &attrs);
1029 if (ret == 0) {
1030 sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1031 sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1032 }
1033 return 0;
1034 }
1035
1036 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1037 struct smb_filename *smb_fname)
1038 {
1039 struct gpfs_winattr attrs;
1040 char *path = NULL;
1041 NTSTATUS status;
1042 int ret;
1043
1044 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1045 if (ret == -1) {
1046 return -1;
1047 }
1048 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1049 if (!NT_STATUS_IS_OK) {
1050 errno = map_errno_from_nt_status(status);
1051 return -1;
1052 }
1053 ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
1054 TALLOC_FREE(path);
1055 if (ret == 0) {
1056 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1057 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1058 }
1059 return 0;
1060 }
1061
1062 static struct vfs_fn_pointers vfs_gpfs_fns = {
1063 .kernel_flock = vfs_gpfs_kernel_flock,
1064 .setlease = vfs_gpfs_setlease,
1065 .get_real_filename = vfs_gpfs_get_real_filename,
1066 .fget_nt_acl = gpfsacl_fget_nt_acl,
1067 .get_nt_acl = gpfsacl_get_nt_acl,
1068 .fset_nt_acl = gpfsacl_fset_nt_acl,
1069 .sys_acl_get_file = gpfsacl_sys_acl_get_file,
1070 .sys_acl_get_fd = gpfsacl_sys_acl_get_fd,
1071 .sys_acl_set_file = gpfsacl_sys_acl_set_file,
1072 .sys_acl_set_fd = gpfsacl_sys_acl_set_fd,
1073 .sys_acl_delete_def_file = gpfsacl_sys_acl_delete_def_file,
1074 .chmod = vfs_gpfs_chmod,
1075 .fchmod = vfs_gpfs_fchmod,
1076 .close_fn = vfs_gpfs_close,
1077 .set_xattr = gpfs_set_xattr,
1078 .get_xattr = gpfs_get_xattr,
1079 .stat = vfs_gpfs_stat,
1080 .fstat = vfs_gpfs_fstat,
1081 .lstat = vfs_gpfs_lstat,
1082 };
1083
1084 NTSTATUS vfs_gpfs_init(void);
1085 NTSTATUS vfs_gpfs_init(void)
1086 {
1087 init_gpfs();
1088
1089 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
1090 &vfs_gpfs_fns);
1091 }
aatanasov's samba4 branch