?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Use SMB_VFS_NEXT_CLOSE. This VFS stuff is really opaque to me...
[Samba/gebeck_regimport.git] / source3 / modules / vfs_gpfs.c
blob7ef969d04bceffe1da891d399af9d1b530877785
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 result = smb_set_nt_acl_nfs4(
449 fsp, security_info_sent, psd,
450 gpfsacl_process_smbacl);
451 } else { /* assume POSIX ACL - by default... */
452 result = set_nt_acl(fsp, security_info_sent, psd);
453 }
454
455 return result;
456 }
457
458 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
459 {
460 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
461 }
462
463 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
464 {
465 SMB_ACL_T result;
466 int i;
467
468 result = sys_acl_init(pacl->acl_nace);
469 if (result == NULL) {
470 errno = ENOMEM;
471 return NULL;
472 }
473
474 result->count = pacl->acl_nace;
475
476 for (i=0; i<pacl->acl_nace; i++) {
477 struct smb_acl_entry *ace = &result->acl[i];
478 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
479
480 DEBUG(10, ("Converting type %d id %lu perm %x\n",
481 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
482 (int)g_ace->ace_perm));
483
484 switch (g_ace->ace_type) {
485 case GPFS_ACL_USER:
486 ace->a_type = SMB_ACL_USER;
487 ace->uid = (uid_t)g_ace->ace_who;
488 break;
489 case GPFS_ACL_USER_OBJ:
490 ace->a_type = SMB_ACL_USER_OBJ;
491 break;
492 case GPFS_ACL_GROUP:
493 ace->a_type = SMB_ACL_GROUP;
494 ace->gid = (gid_t)g_ace->ace_who;
495 break;
496 case GPFS_ACL_GROUP_OBJ:
497 ace->a_type = SMB_ACL_GROUP_OBJ;
498 break;
499 case GPFS_ACL_OTHER:
500 ace->a_type = SMB_ACL_OTHER;
501 break;
502 case GPFS_ACL_MASK:
503 ace->a_type = SMB_ACL_MASK;
504 break;
505 default:
506 DEBUG(10, ("Got invalid ace_type: %d\n",
507 g_ace->ace_type));
508 errno = EINVAL;
509 SAFE_FREE(result);
510 return NULL;
511 }
512
513 ace->a_perm = 0;
514 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
515 SMB_ACL_READ : 0;
516 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
517 SMB_ACL_WRITE : 0;
518 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
519 SMB_ACL_EXECUTE : 0;
520
521 DEBUGADD(10, ("Converted to %d perm %x\n",
522 ace->a_type, ace->a_perm));
523 }
524
525 return result;
526 }
527
528 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
529 {
530 struct gpfs_acl *pacl;
531 SMB_ACL_T result = NULL;
532
533 pacl = gpfs_getacl_alloc(path, type);
534
535 if (pacl == NULL) {
536 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
537 path, strerror(errno)));
538 if (errno == 0) {
539 errno = EINVAL;
540 }
541 goto done;
542 }
543
544 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
545 DEBUG(10, ("Got acl version %d, expected %d\n",
546 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
547 errno = EINVAL;
548 goto done;
549 }
550
551 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
552 pacl->acl_len, pacl->acl_level, pacl->acl_version,
553 pacl->acl_nace));
554
555 result = gpfs2smb_acl(pacl);
556 if (result == NULL) {
557 goto done;
558 }
559
560 done:
561
562 if (errno != 0) {
563 SAFE_FREE(result);
564 }
565 return result;
566 }
567
568 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
569 const char *path_p,
570 SMB_ACL_TYPE_T type)
571 {
572 gpfs_aclType_t gpfs_type;
573
574 switch(type) {
575 case SMB_ACL_TYPE_ACCESS:
576 gpfs_type = GPFS_ACL_TYPE_ACCESS;
577 break;
578 case SMB_ACL_TYPE_DEFAULT:
579 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
580 break;
581 default:
582 DEBUG(0, ("Got invalid type: %d\n", type));
583 smb_panic("exiting");
584 }
585
586 return gpfsacl_get_posix_acl(path_p, gpfs_type);
587 }
588
589 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
590 files_struct *fsp)
591 {
592 return gpfsacl_get_posix_acl(fsp->fsp_name, GPFS_ACL_TYPE_ACCESS);
593 }
594
595 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
596 SMB_ACL_TYPE_T type)
597 {
598 gpfs_aclLen_t len;
599 struct gpfs_acl *result;
600 int i;
601 union gpfs_ace_union
602 {
603 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
604 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
605 };
606
607 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
608
609 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
610 (pacl->count)*sizeof(gpfs_ace_v1_t);
611
612 result = (struct gpfs_acl *)SMB_MALLOC(len);
613 if (result == NULL) {
614 errno = ENOMEM;
615 return result;
616 }
617
618 result->acl_len = len;
619 result->acl_level = 0;
620 result->acl_version = GPFS_ACL_VERSION_POSIX;
621 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
622 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
623 result->acl_nace = pacl->count;
624
625 for (i=0; i<pacl->count; i++) {
626 const struct smb_acl_entry *ace = &pacl->acl[i];
627 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
628
629 DEBUG(10, ("Converting type %d perm %x\n",
630 (int)ace->a_type, (int)ace->a_perm));
631
632 g_ace->ace_perm = 0;
633
634 switch(ace->a_type) {
635 case SMB_ACL_USER:
636 g_ace->ace_type = GPFS_ACL_USER;
637 g_ace->ace_who = (gpfs_uid_t)ace->uid;
638 break;
639 case SMB_ACL_USER_OBJ:
640 g_ace->ace_type = GPFS_ACL_USER_OBJ;
641 g_ace->ace_perm |= ACL_PERM_CONTROL;
642 g_ace->ace_who = 0;
643 break;
644 case SMB_ACL_GROUP:
645 g_ace->ace_type = GPFS_ACL_GROUP;
646 g_ace->ace_who = (gpfs_uid_t)ace->gid;
647 break;
648 case SMB_ACL_GROUP_OBJ:
649 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
650 g_ace->ace_who = 0;
651 break;
652 case SMB_ACL_MASK:
653 g_ace->ace_type = GPFS_ACL_MASK;
654 g_ace->ace_perm = 0x8f;
655 g_ace->ace_who = 0;
656 break;
657 case SMB_ACL_OTHER:
658 g_ace->ace_type = GPFS_ACL_OTHER;
659 g_ace->ace_who = 0;
660 break;
661 default:
662 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
663 errno = EINVAL;
664 SAFE_FREE(result);
665 return NULL;
666 }
667
668 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
669 ACL_PERM_READ : 0;
670 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
671 ACL_PERM_WRITE : 0;
672 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
673 ACL_PERM_EXECUTE : 0;
674
675 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
676 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
677 }
678
679 return result;
680 }
681
682 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
683 const char *name,
684 SMB_ACL_TYPE_T type,
685 SMB_ACL_T theacl)
686 {
687 struct gpfs_acl *gpfs_acl;
688 int result;
689
690 gpfs_acl = smb2gpfs_acl(theacl, type);
691 if (gpfs_acl == NULL) {
692 return -1;
693 }
694
695 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
696
697 SAFE_FREE(gpfs_acl);
698 return result;
699 }
700
701 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
702 files_struct *fsp,
703 SMB_ACL_T theacl)
704 {
705 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name, SMB_ACL_TYPE_ACCESS, theacl);
706 }
707
708 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
709 const char *path)
710 {
711 errno = ENOTSUP;
712 return -1;
713 }
714
715 /*
716 * Assumed: mode bits are shiftable and standard
717 * Output: the new aceMask field for an smb nfs4 ace
718 */
719 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
720 {
721 const uint32 posix_nfs4map[3] = {
722 SMB_ACE4_EXECUTE, /* execute */
723 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
724 SMB_ACE4_READ_DATA /* read */
725 };
726 int i;
727 uint32_t posix_mask = 0x01;
728 uint32_t posix_bit;
729 uint32_t nfs4_bits;
730
731 for(i=0; i<3; i++) {
732 nfs4_bits = posix_nfs4map[i];
733 posix_bit = rwx & posix_mask;
734
735 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
736 if (posix_bit)
737 aceMask |= nfs4_bits;
738 else
739 aceMask &= ~nfs4_bits;
740 } else {
741 /* add deny bits when suitable */
742 if (!posix_bit)
743 aceMask |= nfs4_bits;
744 else
745 aceMask &= ~nfs4_bits;
746 } /* other ace types are unexpected */
747
748 posix_mask <<= 1;
749 }
750
751 return aceMask;
752 }
753
754 static int gpfsacl_emu_chmod(const char *path, mode_t mode)
755 {
756 SMB4ACL_T *pacl = NULL;
757 int result;
758 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
759 int i;
760 files_struct fake_fsp; /* TODO: rationalize parametrization */
761 SMB4ACE_T *smbace;
762
763 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
764
765 result = gpfs_get_nfs4_acl(path, &pacl);
766 if (result)
767 return result;
768
769 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
770 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
771 }
772
773 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
774 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
775 uint32_t specid = ace->who.special_id;
776
777 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
778 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
779 specid <= SMB_ACE4_WHO_EVERYONE) {
780
781 uint32_t newMask;
782
783 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
784 haveAllowEntry[specid] = True;
785
786 /* mode >> 6 for @owner, mode >> 3 for @group,
787 * mode >> 0 for @everyone */
788 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
789 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
790 if (ace->aceMask!=newMask) {
791 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
792 path, ace->aceMask, newMask, specid));
793 }
794 ace->aceMask = newMask;
795 }
796 }
797
798 /* make sure we have at least ALLOW entries
799 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
800 * - if necessary
801 */
802 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
803 SMB_ACE4PROP_T ace;
804
805 if (haveAllowEntry[i]==True)
806 continue;
807
808 ZERO_STRUCT(ace);
809 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
810 ace.flags |= SMB_ACE4_ID_SPECIAL;
811 ace.who.special_id = i;
812
813 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
814 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
815
816 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
817 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
818
819 /* don't add unnecessary aces */
820 if (!ace.aceMask)
821 continue;
822
823 /* we add it to the END - as windows expects allow aces */
824 smb_add_ace4(pacl, &ace);
825 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
826 path, mode, i, ace.aceMask));
827 }
828
829 /* don't add complementary DENY ACEs here */
830 ZERO_STRUCT(fake_fsp);
831 fake_fsp.fsp_name = (char *)path; /* no file_new is needed here */
832
833 /* put the acl */
834 if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False)
835 return -1;
836 return 0; /* ok for [f]chmod */
837 }
838
839 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
840 {
841 SMB_STRUCT_STAT st;
842 int rc;
843
844 if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) {
845 return -1;
846 }
847
848 /* avoid chmod() if possible, to preserve acls */
849 if ((st.st_mode & ~S_IFMT) == mode) {
850 return 0;
851 }
852
853 rc = gpfsacl_emu_chmod(path, mode);
854 if (rc == 1)
855 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
856 return rc;
857 }
858
859 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
860 {
861 SMB_STRUCT_STAT st;
862 int rc;
863
864 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
865 return -1;
866 }
867
868 /* avoid chmod() if possible, to preserve acls */
869 if ((st.st_mode & ~S_IFMT) == mode) {
870 return 0;
871 }
872
873 rc = gpfsacl_emu_chmod(fsp->fsp_name, mode);
874 if (rc == 1)
875 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
876 return rc;
877 }
878
879 /* VFS operations structure */
880
881 static vfs_op_tuple gpfs_op_tuples[] = {
882
883 { SMB_VFS_OP(vfs_gpfs_kernel_flock),
884 SMB_VFS_OP_KERNEL_FLOCK,
885 SMB_VFS_LAYER_OPAQUE },
886
887 { SMB_VFS_OP(vfs_gpfs_setlease),
888 SMB_VFS_OP_LINUX_SETLEASE,
889 SMB_VFS_LAYER_OPAQUE },
890
891 { SMB_VFS_OP(vfs_gpfs_get_real_filename),
892 SMB_VFS_OP_GET_REAL_FILENAME,
893 SMB_VFS_LAYER_OPAQUE },
894
895 { SMB_VFS_OP(gpfsacl_fget_nt_acl),
896 SMB_VFS_OP_FGET_NT_ACL,
897 SMB_VFS_LAYER_TRANSPARENT },
898
899 { SMB_VFS_OP(gpfsacl_get_nt_acl),
900 SMB_VFS_OP_GET_NT_ACL,
901 SMB_VFS_LAYER_TRANSPARENT },
902
903 { SMB_VFS_OP(gpfsacl_fset_nt_acl),
904 SMB_VFS_OP_FSET_NT_ACL,
905 SMB_VFS_LAYER_TRANSPARENT },
906
907 { SMB_VFS_OP(gpfsacl_sys_acl_get_file),
908 SMB_VFS_OP_SYS_ACL_GET_FILE,
909 SMB_VFS_LAYER_TRANSPARENT },
910
911 { SMB_VFS_OP(gpfsacl_sys_acl_get_fd),
912 SMB_VFS_OP_SYS_ACL_GET_FD,
913 SMB_VFS_LAYER_TRANSPARENT },
914
915 { SMB_VFS_OP(gpfsacl_sys_acl_set_file),
916 SMB_VFS_OP_SYS_ACL_SET_FILE,
917 SMB_VFS_LAYER_TRANSPARENT },
918
919 { SMB_VFS_OP(gpfsacl_sys_acl_set_fd),
920 SMB_VFS_OP_SYS_ACL_SET_FD,
921 SMB_VFS_LAYER_TRANSPARENT },
922
923 { SMB_VFS_OP(gpfsacl_sys_acl_delete_def_file),
924 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
925 SMB_VFS_LAYER_TRANSPARENT },
926
927 { SMB_VFS_OP(vfs_gpfs_chmod),
928 SMB_VFS_OP_CHMOD,
929 SMB_VFS_LAYER_TRANSPARENT },
930
931 { SMB_VFS_OP(vfs_gpfs_fchmod),
932 SMB_VFS_OP_FCHMOD,
933 SMB_VFS_LAYER_TRANSPARENT },
934
935 { SMB_VFS_OP(vfs_gpfs_close),
936 SMB_VFS_OP_CLOSE,
937 SMB_VFS_LAYER_TRANSPARENT },
938
939 { SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP }
940
941 };
942
943
944 NTSTATUS vfs_gpfs_init(void);
945 NTSTATUS vfs_gpfs_init(void)
946 {
947 init_gpfs();
948
949 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
950 gpfs_op_tuples);
951 }
reg import