source: branches/samba-3.3.x/source/modules/vfs_gpfs.c

Last change on this file was 224, checked in by Herwig Bauernfeind, 16 years ago

Update Samba 3.3 branch to 3.3.4
File size: 24.2 KB
Line 
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
33static 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
52static 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
75static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
76 const char *path,
77 const char *name,
78 TALLOC_CTX *mem_ctx,
79 char **found_name)
80{
81 int result;
82 char *full_path;
83 char real_pathname[PATH_MAX+1];
84 int buflen;
85
86 full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
87 if (full_path == NULL) {
88 errno = ENOMEM;
89 return -1;
90 }
91
92 buflen = sizeof(real_pathname) - 1;
93
94 result = smbd_gpfs_get_realfilename_path(full_path, real_pathname,
95 &buflen);
96
97 TALLOC_FREE(full_path);
98
99 if ((result == -1) && (errno == ENOSYS)) {
100 return SMB_VFS_NEXT_GET_REAL_FILENAME(
101 handle, path, name, mem_ctx, found_name);
102 }
103
104 if (result == -1) {
105 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
106 strerror(errno)));
107 return -1;
108 }
109
110 /*
111 * GPFS does not necessarily null-terminate the returned path
112 * but instead returns the buffer length in buflen.
113 */
114
115 if (buflen < sizeof(real_pathname)) {
116 real_pathname[buflen] = '\0';
117 } else {
118 real_pathname[sizeof(real_pathname)-1] = '\0';
119 }
120
121 DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
122 path, name, real_pathname));
123
124 name = strrchr_m(real_pathname, '/');
125 if (name == NULL) {
126 errno = ENOENT;
127 return -1;
128 }
129
130 *found_name = talloc_strdup(mem_ctx, name+1);
131 if (*found_name == NULL) {
132 errno = ENOMEM;
133 return -1;
134 }
135
136 return 0;
137}
138
139static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
140{
141 int i;
142 if (gacl==NULL)
143 {
144 DEBUG(0, ("gpfs acl is NULL\n"));
145 return;
146 }
147
148 DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n",
149 gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len));
150 for(i=0; i<gacl->acl_nace; i++)
151 {
152 struct gpfs_ace_v4 *gace = gacl->ace_v4 + i;
153 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n",
154 i, gace->aceType, gace->aceFlags, gace->aceMask,
155 gace->aceIFlags, gace->aceWho));
156 }
157}
158
159static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type)
160{
161 struct gpfs_acl *acl;
162 size_t len = 200;
163 int ret;
164 TALLOC_CTX *mem_ctx = talloc_tos();
165
166 acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len);
167 if (acl == NULL) {
168 errno = ENOMEM;
169 return NULL;
170 }
171
172 acl->acl_len = len;
173 acl->acl_level = 0;
174 acl->acl_version = 0;
175 acl->acl_type = type;
176
177 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
178 if ((ret != 0) && (errno == ENOSPC)) {
179 struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE(
180 mem_ctx, acl->acl_len + sizeof(struct gpfs_acl));
181 if (new_acl == NULL) {
182 errno = ENOMEM;
183 return NULL;
184 }
185
186 new_acl->acl_len = acl->acl_len;
187 new_acl->acl_level = acl->acl_level;
188 new_acl->acl_version = acl->acl_version;
189 new_acl->acl_type = acl->acl_type;
190 acl = new_acl;
191
192 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
193 }
194 if (ret != 0)
195 {
196 DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno)));
197 return NULL;
198 }
199
200 return acl;
201}
202
203/* Tries to get nfs4 acls and returns SMB ACL allocated.
204 * On failure returns 1 if it got non-NFSv4 ACL to prompt
205 * retry with POSIX ACL checks.
206 * On failure returns -1 if there is system (GPFS) error, check errno.
207 * Returns 0 on success
208 */
209static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl)
210{
211 int i;
212 struct gpfs_acl *gacl = NULL;
213 DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
214
215 /* First get the real acl length */
216 gacl = gpfs_getacl_alloc(fname, 0);
217 if (gacl == NULL) {
218 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
219 fname, strerror(errno)));
220 return -1;
221 }
222
223 if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
224 DEBUG(10, ("Got non-nfsv4 acl\n"));
225 /* Retry with POSIX ACLs check */
226 return 1;
227 }
228
229 *ppacl = smb_create_smb4acl();
230
231 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
232 gacl->acl_len, gacl->acl_level, gacl->acl_version,
233 gacl->acl_nace));
234
235 for (i=0; i<gacl->acl_nace; i++) {
236 struct gpfs_ace_v4 *gace = &gacl->ace_v4[i];
237 SMB_ACE4PROP_T smbace;
238 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
239 "who: %d\n", gace->aceType, gace->aceIFlags,
240 gace->aceFlags, gace->aceMask, gace->aceWho));
241
242 ZERO_STRUCT(smbace);
243 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
244 smbace.flags |= SMB_ACE4_ID_SPECIAL;
245 switch (gace->aceWho) {
246 case ACE4_SPECIAL_OWNER:
247 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
248 break;
249 case ACE4_SPECIAL_GROUP:
250 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
251 break;
252 case ACE4_SPECIAL_EVERYONE:
253 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
254 break;
255 default:
256 DEBUG(8, ("invalid special gpfs id %d "
257 "ignored\n", gace->aceWho));
258 continue; /* don't add it */
259 }
260 } else {
261 if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
262 smbace.who.gid = gace->aceWho;
263 else
264 smbace.who.uid = gace->aceWho;
265 }
266
267 /* remove redundent deny entries */
268 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
269 struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1];
270 if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
271 prev->aceFlags == gace->aceFlags &&
272 prev->aceIFlags == gace->aceIFlags &&
273 (gace->aceMask & prev->aceMask) == 0 &&
274 gace->aceWho == prev->aceWho) {
275 /* its redundent - skip it */
276 continue;
277 }
278 }
279
280 smbace.aceType = gace->aceType;
281 smbace.aceFlags = gace->aceFlags;
282 smbace.aceMask = gace->aceMask;
283 smb_add_ace4(*ppacl, &smbace);
284 }
285
286 return 0;
287}
288
289static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
290 files_struct *fsp, uint32 security_info,
291 SEC_DESC **ppdesc)
292{
293 SMB4ACL_T *pacl = NULL;
294 int result;
295
296 *ppdesc = NULL;
297 result = gpfs_get_nfs4_acl(fsp->fsp_name, &pacl);
298
299 if (result == 0)
300 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
301
302 if (result > 0) {
303 DEBUG(10, ("retrying with posix acl...\n"));
304 return posix_fget_nt_acl(fsp, security_info, ppdesc);
305 }
306
307 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
308 return map_nt_error_from_unix(errno);
309}
310
311static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
312 const char *name,
313 uint32 security_info, SEC_DESC **ppdesc)
314{
315 SMB4ACL_T *pacl = NULL;
316 int result;
317
318 *ppdesc = NULL;
319 result = gpfs_get_nfs4_acl(name, &pacl);
320
321 if (result == 0)
322 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl);
323
324 if (result > 0) {
325 DEBUG(10, ("retrying with posix acl...\n"));
326 return posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
327 }
328
329 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
330 return map_nt_error_from_unix(errno);
331}
332
333static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
334{
335 int ret;
336 gpfs_aclLen_t gacl_len;
337 SMB4ACE_T *smbace;
338 struct gpfs_acl *gacl;
339 TALLOC_CTX *mem_ctx = talloc_tos();
340
341 gacl_len = sizeof(struct gpfs_acl) +
342 (smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t);
343
344 gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
345 if (gacl == NULL) {
346 DEBUG(0, ("talloc failed\n"));
347 errno = ENOMEM;
348 return False;
349 }
350
351 gacl->acl_len = gacl_len;
352 gacl->acl_level = 0;
353 gacl->acl_version = GPFS_ACL_VERSION_NFS4;
354 gacl->acl_type = GPFS_ACL_TYPE_NFS4;
355 gacl->acl_nace = 0; /* change later... */
356
357 for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
358 struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace];
359 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
360
361 gace->aceType = aceprop->aceType;
362 gace->aceFlags = aceprop->aceFlags;
363 gace->aceMask = aceprop->aceMask;
364
365 /*
366 * GPFS can't distinguish between WRITE and APPEND on
367 * files, so one being set without the other is an
368 * error. Sorry for the many ()'s :-)
369 */
370
371 if (!fsp->is_directory
372 &&
373 ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
374 && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
375 ||
376 (((gace->aceMask & ACE4_MASK_WRITE) != 0)
377 && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
378 &&
379 lp_parm_bool(fsp->conn->params->service, "gpfs",
380 "merge_writeappend", True)) {
381 DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
382 "WRITE^APPEND, setting WRITE|APPEND\n",
383 fsp->fsp_name));
384 gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
385 }
386
387 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
388
389 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
390 {
391 switch(aceprop->who.special_id)
392 {
393 case SMB_ACE4_WHO_EVERYONE:
394 gace->aceWho = ACE4_SPECIAL_EVERYONE;
395 break;
396 case SMB_ACE4_WHO_OWNER:
397 gace->aceWho = ACE4_SPECIAL_OWNER;
398 break;
399 case SMB_ACE4_WHO_GROUP:
400 gace->aceWho = ACE4_SPECIAL_GROUP;
401 break;
402 default:
403 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
404 continue; /* don't add it !!! */
405 }
406 } else {
407 /* just only for the type safety... */
408 if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
409 gace->aceWho = aceprop->who.gid;
410 else
411 gace->aceWho = aceprop->who.uid;
412 }
413
414 gacl->acl_nace++;
415 }
416
417 ret = smbd_gpfs_putacl(fsp->fsp_name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
418 if (ret != 0) {
419 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
420 gpfs_dumpacl(8, gacl);
421 return False;
422 }
423
424 DEBUG(10, ("gpfs_putacl succeeded\n"));
425 return True;
426}
427
428static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
429{
430 struct gpfs_acl *acl;
431 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
432
433 acl = gpfs_getacl_alloc(fsp->fsp_name, 0);
434 if (acl == NULL)
435 return result;
436
437 if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
438 {
439 result = smb_set_nt_acl_nfs4(
440 fsp, security_info_sent, psd,
441 gpfsacl_process_smbacl);
442 } else { /* assume POSIX ACL - by default... */
443 result = set_nt_acl(fsp, security_info_sent, psd);
444 }
445
446 return result;
447}
448
449static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
450{
451 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
452}
453
454static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
455{
456 SMB_ACL_T result;
457 int i;
458
459 result = sys_acl_init(pacl->acl_nace);
460 if (result == NULL) {
461 errno = ENOMEM;
462 return NULL;
463 }
464
465 result->count = pacl->acl_nace;
466
467 for (i=0; i<pacl->acl_nace; i++) {
468 struct smb_acl_entry *ace = &result->acl[i];
469 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
470
471 DEBUG(10, ("Converting type %d id %lu perm %x\n",
472 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
473 (int)g_ace->ace_perm));
474
475 switch (g_ace->ace_type) {
476 case GPFS_ACL_USER:
477 ace->a_type = SMB_ACL_USER;
478 ace->uid = (uid_t)g_ace->ace_who;
479 break;
480 case GPFS_ACL_USER_OBJ:
481 ace->a_type = SMB_ACL_USER_OBJ;
482 break;
483 case GPFS_ACL_GROUP:
484 ace->a_type = SMB_ACL_GROUP;
485 ace->gid = (gid_t)g_ace->ace_who;
486 break;
487 case GPFS_ACL_GROUP_OBJ:
488 ace->a_type = SMB_ACL_GROUP_OBJ;
489 break;
490 case GPFS_ACL_OTHER:
491 ace->a_type = SMB_ACL_OTHER;
492 break;
493 case GPFS_ACL_MASK:
494 ace->a_type = SMB_ACL_MASK;
495 break;
496 default:
497 DEBUG(10, ("Got invalid ace_type: %d\n",
498 g_ace->ace_type));
499 errno = EINVAL;
500 SAFE_FREE(result);
501 return NULL;
502 }
503
504 ace->a_perm = 0;
505 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
506 SMB_ACL_READ : 0;
507 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
508 SMB_ACL_WRITE : 0;
509 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
510 SMB_ACL_EXECUTE : 0;
511
512 DEBUGADD(10, ("Converted to %d perm %x\n",
513 ace->a_type, ace->a_perm));
514 }
515
516 return result;
517}
518
519static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
520{
521 struct gpfs_acl *pacl;
522 SMB_ACL_T result = NULL;
523
524 pacl = gpfs_getacl_alloc(path, type);
525
526 if (pacl == NULL) {
527 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
528 path, strerror(errno)));
529 if (errno == 0) {
530 errno = EINVAL;
531 }
532 goto done;
533 }
534
535 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
536 DEBUG(10, ("Got acl version %d, expected %d\n",
537 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
538 errno = EINVAL;
539 goto done;
540 }
541
542 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
543 pacl->acl_len, pacl->acl_level, pacl->acl_version,
544 pacl->acl_nace));
545
546 result = gpfs2smb_acl(pacl);
547 if (result == NULL) {
548 goto done;
549 }
550
551 done:
552
553 if (errno != 0) {
554 SAFE_FREE(result);
555 }
556 return result;
557}
558
559static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
560 const char *path_p,
561 SMB_ACL_TYPE_T type)
562{
563 gpfs_aclType_t gpfs_type;
564
565 switch(type) {
566 case SMB_ACL_TYPE_ACCESS:
567 gpfs_type = GPFS_ACL_TYPE_ACCESS;
568 break;
569 case SMB_ACL_TYPE_DEFAULT:
570 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
571 break;
572 default:
573 DEBUG(0, ("Got invalid type: %d\n", type));
574 smb_panic("exiting");
575 }
576
577 return gpfsacl_get_posix_acl(path_p, gpfs_type);
578}
579
580static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
581 files_struct *fsp)
582{
583 return gpfsacl_get_posix_acl(fsp->fsp_name, GPFS_ACL_TYPE_ACCESS);
584}
585
586static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
587 SMB_ACL_TYPE_T type)
588{
589 gpfs_aclLen_t len;
590 struct gpfs_acl *result;
591 int i;
592 union gpfs_ace_union
593 {
594 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
595 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
596 };
597
598 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
599
600 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
601 (pacl->count)*sizeof(gpfs_ace_v1_t);
602
603 result = (struct gpfs_acl *)SMB_MALLOC(len);
604 if (result == NULL) {
605 errno = ENOMEM;
606 return result;
607 }
608
609 result->acl_len = len;
610 result->acl_level = 0;
611 result->acl_version = GPFS_ACL_VERSION_POSIX;
612 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
613 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
614 result->acl_nace = pacl->count;
615
616 for (i=0; i<pacl->count; i++) {
617 const struct smb_acl_entry *ace = &pacl->acl[i];
618 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
619
620 DEBUG(10, ("Converting type %d perm %x\n",
621 (int)ace->a_type, (int)ace->a_perm));
622
623 g_ace->ace_perm = 0;
624
625 switch(ace->a_type) {
626 case SMB_ACL_USER:
627 g_ace->ace_type = GPFS_ACL_USER;
628 g_ace->ace_who = (gpfs_uid_t)ace->uid;
629 break;
630 case SMB_ACL_USER_OBJ:
631 g_ace->ace_type = GPFS_ACL_USER_OBJ;
632 g_ace->ace_perm |= ACL_PERM_CONTROL;
633 g_ace->ace_who = 0;
634 break;
635 case SMB_ACL_GROUP:
636 g_ace->ace_type = GPFS_ACL_GROUP;
637 g_ace->ace_who = (gpfs_uid_t)ace->gid;
638 break;
639 case SMB_ACL_GROUP_OBJ:
640 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
641 g_ace->ace_who = 0;
642 break;
643 case SMB_ACL_MASK:
644 g_ace->ace_type = GPFS_ACL_MASK;
645 g_ace->ace_perm = 0x8f;
646 g_ace->ace_who = 0;
647 break;
648 case SMB_ACL_OTHER:
649 g_ace->ace_type = GPFS_ACL_OTHER;
650 g_ace->ace_who = 0;
651 break;
652 default:
653 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
654 errno = EINVAL;
655 SAFE_FREE(result);
656 return NULL;
657 }
658
659 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
660 ACL_PERM_READ : 0;
661 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
662 ACL_PERM_WRITE : 0;
663 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
664 ACL_PERM_EXECUTE : 0;
665
666 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
667 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
668 }
669
670 return result;
671}
672
673static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
674 const char *name,
675 SMB_ACL_TYPE_T type,
676 SMB_ACL_T theacl)
677{
678 struct gpfs_acl *gpfs_acl;
679 int result;
680
681 gpfs_acl = smb2gpfs_acl(theacl, type);
682 if (gpfs_acl == NULL) {
683 return -1;
684 }
685
686 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
687
688 SAFE_FREE(gpfs_acl);
689 return result;
690}
691
692static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
693 files_struct *fsp,
694 SMB_ACL_T theacl)
695{
696 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name, SMB_ACL_TYPE_ACCESS, theacl);
697}
698
699static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
700 const char *path)
701{
702 errno = ENOTSUP;
703 return -1;
704}
705
706/*
707 * Assumed: mode bits are shiftable and standard
708 * Output: the new aceMask field for an smb nfs4 ace
709 */
710static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
711{
712 const uint32 posix_nfs4map[3] = {
713 SMB_ACE4_EXECUTE, /* execute */
714 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
715 SMB_ACE4_READ_DATA /* read */
716 };
717 int i;
718 uint32_t posix_mask = 0x01;
719 uint32_t posix_bit;
720 uint32_t nfs4_bits;
721
722 for(i=0; i<3; i++) {
723 nfs4_bits = posix_nfs4map[i];
724 posix_bit = rwx & posix_mask;
725
726 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
727 if (posix_bit)
728 aceMask |= nfs4_bits;
729 else
730 aceMask &= ~nfs4_bits;
731 } else {
732 /* add deny bits when suitable */
733 if (!posix_bit)
734 aceMask |= nfs4_bits;
735 else
736 aceMask &= ~nfs4_bits;
737 } /* other ace types are unexpected */
738
739 posix_mask <<= 1;
740 }
741
742 return aceMask;
743}
744
745static int gpfsacl_emu_chmod(const char *path, mode_t mode)
746{
747 SMB4ACL_T *pacl = NULL;
748 int result;
749 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
750 int i;
751 files_struct fake_fsp; /* TODO: rationalize parametrization */
752 SMB4ACE_T *smbace;
753
754 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
755
756 result = gpfs_get_nfs4_acl(path, &pacl);
757 if (result)
758 return result;
759
760 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
761 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
762 }
763
764 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
765 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
766 uint32_t specid = ace->who.special_id;
767
768 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
769 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
770 specid <= SMB_ACE4_WHO_EVERYONE) {
771
772 uint32_t newMask;
773
774 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
775 haveAllowEntry[specid] = True;
776
777 /* mode >> 6 for @owner, mode >> 3 for @group,
778 * mode >> 0 for @everyone */
779 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
780 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
781 if (ace->aceMask!=newMask) {
782 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
783 path, ace->aceMask, newMask, specid));
784 }
785 ace->aceMask = newMask;
786 }
787 }
788
789 /* make sure we have at least ALLOW entries
790 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
791 * - if necessary
792 */
793 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
794 SMB_ACE4PROP_T ace;
795
796 if (haveAllowEntry[i]==True)
797 continue;
798
799 ZERO_STRUCT(ace);
800 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
801 ace.flags |= SMB_ACE4_ID_SPECIAL;
802 ace.who.special_id = i;
803
804 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
805 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
806
807 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
808 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
809
810 /* don't add unnecessary aces */
811 if (!ace.aceMask)
812 continue;
813
814 /* we add it to the END - as windows expects allow aces */
815 smb_add_ace4(pacl, &ace);
816 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
817 path, mode, i, ace.aceMask));
818 }
819
820 /* don't add complementary DENY ACEs here */
821 ZERO_STRUCT(fake_fsp);
822 fake_fsp.fsp_name = (char *)path; /* no file_new is needed here */
823
824 /* put the acl */
825 if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False)
826 return -1;
827 return 0; /* ok for [f]chmod */
828}
829
830static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
831{
832 SMB_STRUCT_STAT st;
833 int rc;
834
835 if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) {
836 return -1;
837 }
838
839 /* avoid chmod() if possible, to preserve acls */
840 if ((st.st_mode & ~S_IFMT) == mode) {
841 return 0;
842 }
843
844 rc = gpfsacl_emu_chmod(path, mode);
845 if (rc == 1)
846 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
847 return rc;
848}
849
850static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
851{
852 SMB_STRUCT_STAT st;
853 int rc;
854
855 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
856 return -1;
857 }
858
859 /* avoid chmod() if possible, to preserve acls */
860 if ((st.st_mode & ~S_IFMT) == mode) {
861 return 0;
862 }
863
864 rc = gpfsacl_emu_chmod(fsp->fsp_name, mode);
865 if (rc == 1)
866 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
867 return rc;
868}
869
870/* VFS operations structure */
871
872static vfs_op_tuple gpfs_op_tuples[] = {
873
874 { SMB_VFS_OP(vfs_gpfs_kernel_flock),
875 SMB_VFS_OP_KERNEL_FLOCK,
876 SMB_VFS_LAYER_OPAQUE },
877
878 { SMB_VFS_OP(vfs_gpfs_setlease),
879 SMB_VFS_OP_LINUX_SETLEASE,
880 SMB_VFS_LAYER_OPAQUE },
881
882 { SMB_VFS_OP(vfs_gpfs_get_real_filename),
883 SMB_VFS_OP_GET_REAL_FILENAME,
884 SMB_VFS_LAYER_OPAQUE },
885
886 { SMB_VFS_OP(gpfsacl_fget_nt_acl),
887 SMB_VFS_OP_FGET_NT_ACL,
888 SMB_VFS_LAYER_TRANSPARENT },
889
890 { SMB_VFS_OP(gpfsacl_get_nt_acl),
891 SMB_VFS_OP_GET_NT_ACL,
892 SMB_VFS_LAYER_TRANSPARENT },
893
894 { SMB_VFS_OP(gpfsacl_fset_nt_acl),
895 SMB_VFS_OP_FSET_NT_ACL,
896 SMB_VFS_LAYER_TRANSPARENT },
897
898 { SMB_VFS_OP(gpfsacl_sys_acl_get_file),
899 SMB_VFS_OP_SYS_ACL_GET_FILE,
900 SMB_VFS_LAYER_TRANSPARENT },
901
902 { SMB_VFS_OP(gpfsacl_sys_acl_get_fd),
903 SMB_VFS_OP_SYS_ACL_GET_FD,
904 SMB_VFS_LAYER_TRANSPARENT },
905
906 { SMB_VFS_OP(gpfsacl_sys_acl_set_file),
907 SMB_VFS_OP_SYS_ACL_SET_FILE,
908 SMB_VFS_LAYER_TRANSPARENT },
909
910 { SMB_VFS_OP(gpfsacl_sys_acl_set_fd),
911 SMB_VFS_OP_SYS_ACL_SET_FD,
912 SMB_VFS_LAYER_TRANSPARENT },
913
914 { SMB_VFS_OP(gpfsacl_sys_acl_delete_def_file),
915 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
916 SMB_VFS_LAYER_TRANSPARENT },
917
918 { SMB_VFS_OP(vfs_gpfs_chmod),
919 SMB_VFS_OP_CHMOD,
920 SMB_VFS_LAYER_TRANSPARENT },
921
922 { SMB_VFS_OP(vfs_gpfs_fchmod),
923 SMB_VFS_OP_FCHMOD,
924 SMB_VFS_LAYER_TRANSPARENT },
925
926 { SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP }
927
928};
929
930
931NTSTATUS vfs_gpfs_init(void);
932NTSTATUS vfs_gpfs_init(void)
933{
934 init_gpfs();
935
936 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
937 gpfs_op_tuples);
938}
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