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Fix pam_winbind build against newer iniparser library.
[Samba.git] / source3 / modules / vfs_gpfs.c
blobca29f64e0bf252bffb2e9c677e3c2a7aee6bf870
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 struct gpfs_config_data {
34 bool sharemodes;
35 bool leases;
36 };
37
38
39 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
40 uint32 share_mode, uint32 access_mask)
41 {
42
43 struct gpfs_config_data *config;
44
45 SMB_VFS_HANDLE_GET_DATA(handle, config,
46 struct gpfs_config_data,
47 return -1);
48
49 START_PROFILE(syscall_kernel_flock);
50
51 kernel_flock(fsp->fh->fd, share_mode, access_mask);
52
53 if (config->sharemodes
54 && !set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) {
55 return -1;
56 }
57
58 END_PROFILE(syscall_kernel_flock);
59
60 return 0;
61 }
62
63 static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
64 {
65
66 struct gpfs_config_data *config;
67
68 SMB_VFS_HANDLE_GET_DATA(handle, config,
69 struct gpfs_config_data,
70 return -1);
71
72 if (config->sharemodes && (fsp->fh != NULL) && (fsp->fh->fd != -1)) {
73 set_gpfs_sharemode(fsp, 0, 0);
74 }
75
76 return SMB_VFS_NEXT_CLOSE(handle, fsp);
77 }
78
79 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
80 int leasetype)
81 {
82 struct gpfs_config_data *config;
83 int ret=0;
84
85 SMB_VFS_HANDLE_GET_DATA(handle, config,
86 struct gpfs_config_data,
87 return -1);
88
89 START_PROFILE(syscall_linux_setlease);
90
91 if (linux_set_lease_sighandler(fsp->fh->fd) == -1)
92 return -1;
93
94 if (config->leases) {
95 ret = set_gpfs_lease(fsp->fh->fd,leasetype);
96 }
97
98 if (ret < 0) {
99 /* This must have come from GPFS not being available */
100 /* or some other error, hence call the default */
101 ret = linux_setlease(fsp->fh->fd, leasetype);
102 }
103
104 END_PROFILE(syscall_linux_setlease);
105
106 return ret;
107 }
108
109 static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle,
110 const char *path,
111 const char *name,
112 TALLOC_CTX *mem_ctx,
113 char **found_name)
114 {
115 int result;
116 char *full_path;
117 char real_pathname[PATH_MAX+1];
118 int buflen;
119
120 full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name);
121 if (full_path == NULL) {
122 errno = ENOMEM;
123 return -1;
124 }
125
126 buflen = sizeof(real_pathname) - 1;
127
128 result = smbd_gpfs_get_realfilename_path(full_path, real_pathname,
129 &buflen);
130
131 TALLOC_FREE(full_path);
132
133 if ((result == -1) && (errno == ENOSYS)) {
134 return SMB_VFS_NEXT_GET_REAL_FILENAME(
135 handle, path, name, mem_ctx, found_name);
136 }
137
138 if (result == -1) {
139 DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
140 strerror(errno)));
141 return -1;
142 }
143
144 /*
145 * GPFS does not necessarily null-terminate the returned path
146 * but instead returns the buffer length in buflen.
147 */
148
149 if (buflen < sizeof(real_pathname)) {
150 real_pathname[buflen] = '\0';
151 } else {
152 real_pathname[sizeof(real_pathname)-1] = '\0';
153 }
154
155 DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n",
156 path, name, real_pathname));
157
158 name = strrchr_m(real_pathname, '/');
159 if (name == NULL) {
160 errno = ENOENT;
161 return -1;
162 }
163
164 *found_name = talloc_strdup(mem_ctx, name+1);
165 if (*found_name == NULL) {
166 errno = ENOMEM;
167 return -1;
168 }
169
170 return 0;
171 }
172
173 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
174 {
175 int i;
176 if (gacl==NULL)
177 {
178 DEBUG(0, ("gpfs acl is NULL\n"));
179 return;
180 }
181
182 DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n",
183 gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len));
184 for(i=0; i<gacl->acl_nace; i++)
185 {
186 struct gpfs_ace_v4 *gace = gacl->ace_v4 + i;
187 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n",
188 i, gace->aceType, gace->aceFlags, gace->aceMask,
189 gace->aceIFlags, gace->aceWho));
190 }
191 }
192
193 static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type)
194 {
195 struct gpfs_acl *acl;
196 size_t len = 200;
197 int ret;
198 TALLOC_CTX *mem_ctx = talloc_tos();
199
200 acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len);
201 if (acl == NULL) {
202 errno = ENOMEM;
203 return NULL;
204 }
205
206 acl->acl_len = len;
207 acl->acl_level = 0;
208 acl->acl_version = 0;
209 acl->acl_type = type;
210
211 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
212 if ((ret != 0) && (errno == ENOSPC)) {
213 struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE(
214 mem_ctx, acl->acl_len + sizeof(struct gpfs_acl));
215 if (new_acl == NULL) {
216 errno = ENOMEM;
217 return NULL;
218 }
219
220 new_acl->acl_len = acl->acl_len;
221 new_acl->acl_level = acl->acl_level;
222 new_acl->acl_version = acl->acl_version;
223 new_acl->acl_type = acl->acl_type;
224 acl = new_acl;
225
226 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
227 }
228 if (ret != 0)
229 {
230 DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno)));
231 return NULL;
232 }
233
234 return acl;
235 }
236
237 /* Tries to get nfs4 acls and returns SMB ACL allocated.
238 * On failure returns 1 if it got non-NFSv4 ACL to prompt
239 * retry with POSIX ACL checks.
240 * On failure returns -1 if there is system (GPFS) error, check errno.
241 * Returns 0 on success
242 */
243 static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl)
244 {
245 int i;
246 struct gpfs_acl *gacl = NULL;
247 DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
248
249 /* First get the real acl length */
250 gacl = gpfs_getacl_alloc(fname, 0);
251 if (gacl == NULL) {
252 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
253 fname, strerror(errno)));
254 return -1;
255 }
256
257 if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
258 DEBUG(10, ("Got non-nfsv4 acl\n"));
259 /* Retry with POSIX ACLs check */
260 return 1;
261 }
262
263 *ppacl = smb_create_smb4acl();
264
265 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
266 gacl->acl_len, gacl->acl_level, gacl->acl_version,
267 gacl->acl_nace));
268
269 for (i=0; i<gacl->acl_nace; i++) {
270 struct gpfs_ace_v4 *gace = &gacl->ace_v4[i];
271 SMB_ACE4PROP_T smbace;
272 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
273 "who: %d\n", gace->aceType, gace->aceIFlags,
274 gace->aceFlags, gace->aceMask, gace->aceWho));
275
276 ZERO_STRUCT(smbace);
277 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
278 smbace.flags |= SMB_ACE4_ID_SPECIAL;
279 switch (gace->aceWho) {
280 case ACE4_SPECIAL_OWNER:
281 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
282 break;
283 case ACE4_SPECIAL_GROUP:
284 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
285 break;
286 case ACE4_SPECIAL_EVERYONE:
287 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
288 break;
289 default:
290 DEBUG(8, ("invalid special gpfs id %d "
291 "ignored\n", gace->aceWho));
292 continue; /* don't add it */
293 }
294 } else {
295 if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
296 smbace.who.gid = gace->aceWho;
297 else
298 smbace.who.uid = gace->aceWho;
299 }
300
301 /* remove redundent deny entries */
302 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
303 struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1];
304 if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
305 prev->aceFlags == gace->aceFlags &&
306 prev->aceIFlags == gace->aceIFlags &&
307 (gace->aceMask & prev->aceMask) == 0 &&
308 gace->aceWho == prev->aceWho) {
309 /* its redundent - skip it */
310 continue;
311 }
312 }
313
314 smbace.aceType = gace->aceType;
315 smbace.aceFlags = gace->aceFlags;
316 smbace.aceMask = gace->aceMask;
317 smb_add_ace4(*ppacl, &smbace);
318 }
319
320 return 0;
321 }
322
323 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
324 files_struct *fsp, uint32 security_info,
325 SEC_DESC **ppdesc)
326 {
327 SMB4ACL_T *pacl = NULL;
328 int result;
329
330 *ppdesc = NULL;
331 result = gpfs_get_nfs4_acl(fsp->fsp_name->base_name, &pacl);
332
333 if (result == 0)
334 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
335
336 if (result > 0) {
337 DEBUG(10, ("retrying with posix acl...\n"));
338 return posix_fget_nt_acl(fsp, security_info, ppdesc);
339 }
340
341 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
342 return map_nt_error_from_unix(errno);
343 }
344
345 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
346 const char *name,
347 uint32 security_info, SEC_DESC **ppdesc)
348 {
349 SMB4ACL_T *pacl = NULL;
350 int result;
351
352 *ppdesc = NULL;
353 result = gpfs_get_nfs4_acl(name, &pacl);
354
355 if (result == 0)
356 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl);
357
358 if (result > 0) {
359 DEBUG(10, ("retrying with posix acl...\n"));
360 return posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
361 }
362
363 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
364 return map_nt_error_from_unix(errno);
365 }
366
367 static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
368 {
369 int ret;
370 gpfs_aclLen_t gacl_len;
371 SMB4ACE_T *smbace;
372 struct gpfs_acl *gacl;
373 TALLOC_CTX *mem_ctx = talloc_tos();
374
375 gacl_len = sizeof(struct gpfs_acl) +
376 (smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t);
377
378 gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
379 if (gacl == NULL) {
380 DEBUG(0, ("talloc failed\n"));
381 errno = ENOMEM;
382 return False;
383 }
384
385 gacl->acl_len = gacl_len;
386 gacl->acl_level = 0;
387 gacl->acl_version = GPFS_ACL_VERSION_NFS4;
388 gacl->acl_type = GPFS_ACL_TYPE_NFS4;
389 gacl->acl_nace = 0; /* change later... */
390
391 for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
392 struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace];
393 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
394
395 gace->aceType = aceprop->aceType;
396 gace->aceFlags = aceprop->aceFlags;
397 gace->aceMask = aceprop->aceMask;
398
399 /*
400 * GPFS can't distinguish between WRITE and APPEND on
401 * files, so one being set without the other is an
402 * error. Sorry for the many ()'s :-)
403 */
404
405 if (!fsp->is_directory
406 &&
407 ((((gace->aceMask & ACE4_MASK_WRITE) == 0)
408 && ((gace->aceMask & ACE4_MASK_APPEND) != 0))
409 ||
410 (((gace->aceMask & ACE4_MASK_WRITE) != 0)
411 && ((gace->aceMask & ACE4_MASK_APPEND) == 0)))
412 &&
413 lp_parm_bool(fsp->conn->params->service, "gpfs",
414 "merge_writeappend", True)) {
415 DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains "
416 "WRITE^APPEND, setting WRITE|APPEND\n",
417 fsp_str_dbg(fsp)));
418 gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND;
419 }
420
421 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
422
423 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
424 {
425 switch(aceprop->who.special_id)
426 {
427 case SMB_ACE4_WHO_EVERYONE:
428 gace->aceWho = ACE4_SPECIAL_EVERYONE;
429 break;
430 case SMB_ACE4_WHO_OWNER:
431 gace->aceWho = ACE4_SPECIAL_OWNER;
432 break;
433 case SMB_ACE4_WHO_GROUP:
434 gace->aceWho = ACE4_SPECIAL_GROUP;
435 break;
436 default:
437 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
438 continue; /* don't add it !!! */
439 }
440 } else {
441 /* just only for the type safety... */
442 if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
443 gace->aceWho = aceprop->who.gid;
444 else
445 gace->aceWho = aceprop->who.uid;
446 }
447
448 gacl->acl_nace++;
449 }
450
451 ret = smbd_gpfs_putacl(fsp->fsp_name->base_name,
452 GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
453 if (ret != 0) {
454 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
455 gpfs_dumpacl(8, gacl);
456 return False;
457 }
458
459 DEBUG(10, ("gpfs_putacl succeeded\n"));
460 return True;
461 }
462
463 static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
464 {
465 struct gpfs_acl *acl;
466 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
467
468 acl = gpfs_getacl_alloc(fsp->fsp_name->base_name, 0);
469 if (acl == NULL)
470 return result;
471
472 if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
473 {
474 if (lp_parm_bool(fsp->conn->params->service, "gpfs",
475 "refuse_dacl_protected", false)
476 && (psd->type&SEC_DESC_DACL_PROTECTED)) {
477 DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n"));
478 return NT_STATUS_NOT_SUPPORTED;
479 }
480
481 result = smb_set_nt_acl_nfs4(
482 fsp, security_info_sent, psd,
483 gpfsacl_process_smbacl);
484 } else { /* assume POSIX ACL - by default... */
485 result = set_nt_acl(fsp, security_info_sent, psd);
486 }
487
488 return result;
489 }
490
491 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
492 {
493 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
494 }
495
496 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
497 {
498 SMB_ACL_T result;
499 int i;
500
501 result = sys_acl_init(pacl->acl_nace);
502 if (result == NULL) {
503 errno = ENOMEM;
504 return NULL;
505 }
506
507 result->count = pacl->acl_nace;
508
509 for (i=0; i<pacl->acl_nace; i++) {
510 struct smb_acl_entry *ace = &result->acl[i];
511 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
512
513 DEBUG(10, ("Converting type %d id %lu perm %x\n",
514 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
515 (int)g_ace->ace_perm));
516
517 switch (g_ace->ace_type) {
518 case GPFS_ACL_USER:
519 ace->a_type = SMB_ACL_USER;
520 ace->uid = (uid_t)g_ace->ace_who;
521 break;
522 case GPFS_ACL_USER_OBJ:
523 ace->a_type = SMB_ACL_USER_OBJ;
524 break;
525 case GPFS_ACL_GROUP:
526 ace->a_type = SMB_ACL_GROUP;
527 ace->gid = (gid_t)g_ace->ace_who;
528 break;
529 case GPFS_ACL_GROUP_OBJ:
530 ace->a_type = SMB_ACL_GROUP_OBJ;
531 break;
532 case GPFS_ACL_OTHER:
533 ace->a_type = SMB_ACL_OTHER;
534 break;
535 case GPFS_ACL_MASK:
536 ace->a_type = SMB_ACL_MASK;
537 break;
538 default:
539 DEBUG(10, ("Got invalid ace_type: %d\n",
540 g_ace->ace_type));
541 errno = EINVAL;
542 SAFE_FREE(result);
543 return NULL;
544 }
545
546 ace->a_perm = 0;
547 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
548 SMB_ACL_READ : 0;
549 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
550 SMB_ACL_WRITE : 0;
551 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
552 SMB_ACL_EXECUTE : 0;
553
554 DEBUGADD(10, ("Converted to %d perm %x\n",
555 ace->a_type, ace->a_perm));
556 }
557
558 return result;
559 }
560
561 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
562 {
563 struct gpfs_acl *pacl;
564 SMB_ACL_T result = NULL;
565
566 pacl = gpfs_getacl_alloc(path, type);
567
568 if (pacl == NULL) {
569 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
570 path, strerror(errno)));
571 if (errno == 0) {
572 errno = EINVAL;
573 }
574 goto done;
575 }
576
577 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
578 DEBUG(10, ("Got acl version %d, expected %d\n",
579 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
580 errno = EINVAL;
581 goto done;
582 }
583
584 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
585 pacl->acl_len, pacl->acl_level, pacl->acl_version,
586 pacl->acl_nace));
587
588 result = gpfs2smb_acl(pacl);
589 if (result == NULL) {
590 goto done;
591 }
592
593 done:
594
595 if (errno != 0) {
596 SAFE_FREE(result);
597 }
598 return result;
599 }
600
601 static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
602 const char *path_p,
603 SMB_ACL_TYPE_T type)
604 {
605 gpfs_aclType_t gpfs_type;
606
607 switch(type) {
608 case SMB_ACL_TYPE_ACCESS:
609 gpfs_type = GPFS_ACL_TYPE_ACCESS;
610 break;
611 case SMB_ACL_TYPE_DEFAULT:
612 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
613 break;
614 default:
615 DEBUG(0, ("Got invalid type: %d\n", type));
616 smb_panic("exiting");
617 }
618
619 return gpfsacl_get_posix_acl(path_p, gpfs_type);
620 }
621
622 static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
623 files_struct *fsp)
624 {
625 return gpfsacl_get_posix_acl(fsp->fsp_name->base_name,
626 GPFS_ACL_TYPE_ACCESS);
627 }
628
629 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
630 SMB_ACL_TYPE_T type)
631 {
632 gpfs_aclLen_t len;
633 struct gpfs_acl *result;
634 int i;
635 union gpfs_ace_union
636 {
637 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
638 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
639 };
640
641 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
642
643 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
644 (pacl->count)*sizeof(gpfs_ace_v1_t);
645
646 result = (struct gpfs_acl *)SMB_MALLOC(len);
647 if (result == NULL) {
648 errno = ENOMEM;
649 return result;
650 }
651
652 result->acl_len = len;
653 result->acl_level = 0;
654 result->acl_version = GPFS_ACL_VERSION_POSIX;
655 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
656 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
657 result->acl_nace = pacl->count;
658
659 for (i=0; i<pacl->count; i++) {
660 const struct smb_acl_entry *ace = &pacl->acl[i];
661 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
662
663 DEBUG(10, ("Converting type %d perm %x\n",
664 (int)ace->a_type, (int)ace->a_perm));
665
666 g_ace->ace_perm = 0;
667
668 switch(ace->a_type) {
669 case SMB_ACL_USER:
670 g_ace->ace_type = GPFS_ACL_USER;
671 g_ace->ace_who = (gpfs_uid_t)ace->uid;
672 break;
673 case SMB_ACL_USER_OBJ:
674 g_ace->ace_type = GPFS_ACL_USER_OBJ;
675 g_ace->ace_perm |= ACL_PERM_CONTROL;
676 g_ace->ace_who = 0;
677 break;
678 case SMB_ACL_GROUP:
679 g_ace->ace_type = GPFS_ACL_GROUP;
680 g_ace->ace_who = (gpfs_uid_t)ace->gid;
681 break;
682 case SMB_ACL_GROUP_OBJ:
683 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
684 g_ace->ace_who = 0;
685 break;
686 case SMB_ACL_MASK:
687 g_ace->ace_type = GPFS_ACL_MASK;
688 g_ace->ace_perm = 0x8f;
689 g_ace->ace_who = 0;
690 break;
691 case SMB_ACL_OTHER:
692 g_ace->ace_type = GPFS_ACL_OTHER;
693 g_ace->ace_who = 0;
694 break;
695 default:
696 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
697 errno = EINVAL;
698 SAFE_FREE(result);
699 return NULL;
700 }
701
702 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
703 ACL_PERM_READ : 0;
704 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
705 ACL_PERM_WRITE : 0;
706 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
707 ACL_PERM_EXECUTE : 0;
708
709 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
710 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
711 }
712
713 return result;
714 }
715
716 static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
717 const char *name,
718 SMB_ACL_TYPE_T type,
719 SMB_ACL_T theacl)
720 {
721 struct gpfs_acl *gpfs_acl;
722 int result;
723
724 gpfs_acl = smb2gpfs_acl(theacl, type);
725 if (gpfs_acl == NULL) {
726 return -1;
727 }
728
729 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
730
731 SAFE_FREE(gpfs_acl);
732 return result;
733 }
734
735 static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
736 files_struct *fsp,
737 SMB_ACL_T theacl)
738 {
739 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name,
740 SMB_ACL_TYPE_ACCESS, theacl);
741 }
742
743 static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
744 const char *path)
745 {
746 errno = ENOTSUP;
747 return -1;
748 }
749
750 /*
751 * Assumed: mode bits are shiftable and standard
752 * Output: the new aceMask field for an smb nfs4 ace
753 */
754 static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx)
755 {
756 const uint32 posix_nfs4map[3] = {
757 SMB_ACE4_EXECUTE, /* execute */
758 SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
759 SMB_ACE4_READ_DATA /* read */
760 };
761 int i;
762 uint32_t posix_mask = 0x01;
763 uint32_t posix_bit;
764 uint32_t nfs4_bits;
765
766 for(i=0; i<3; i++) {
767 nfs4_bits = posix_nfs4map[i];
768 posix_bit = rwx & posix_mask;
769
770 if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
771 if (posix_bit)
772 aceMask |= nfs4_bits;
773 else
774 aceMask &= ~nfs4_bits;
775 } else {
776 /* add deny bits when suitable */
777 if (!posix_bit)
778 aceMask |= nfs4_bits;
779 else
780 aceMask &= ~nfs4_bits;
781 } /* other ace types are unexpected */
782
783 posix_mask <<= 1;
784 }
785
786 return aceMask;
787 }
788
789 static int gpfsacl_emu_chmod(const char *path, mode_t mode)
790 {
791 SMB4ACL_T *pacl = NULL;
792 int result;
793 bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
794 int i;
795 files_struct fake_fsp; /* TODO: rationalize parametrization */
796 SMB4ACE_T *smbace;
797 NTSTATUS status;
798
799 DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
800
801 result = gpfs_get_nfs4_acl(path, &pacl);
802 if (result)
803 return result;
804
805 if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
806 DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
807 }
808
809 for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
810 SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
811 uint32_t specid = ace->who.special_id;
812
813 if (ace->flags&SMB_ACE4_ID_SPECIAL &&
814 ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
815 specid <= SMB_ACE4_WHO_EVERYONE) {
816
817 uint32_t newMask;
818
819 if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
820 haveAllowEntry[specid] = True;
821
822 /* mode >> 6 for @owner, mode >> 3 for @group,
823 * mode >> 0 for @everyone */
824 newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
825 mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
826 if (ace->aceMask!=newMask) {
827 DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
828 path, ace->aceMask, newMask, specid));
829 }
830 ace->aceMask = newMask;
831 }
832 }
833
834 /* make sure we have at least ALLOW entries
835 * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
836 * - if necessary
837 */
838 for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
839 SMB_ACE4PROP_T ace;
840
841 if (haveAllowEntry[i]==True)
842 continue;
843
844 ZERO_STRUCT(ace);
845 ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
846 ace.flags |= SMB_ACE4_ID_SPECIAL;
847 ace.who.special_id = i;
848
849 if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
850 ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
851
852 ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
853 mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
854
855 /* don't add unnecessary aces */
856 if (!ace.aceMask)
857 continue;
858
859 /* we add it to the END - as windows expects allow aces */
860 smb_add_ace4(pacl, &ace);
861 DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
862 path, mode, i, ace.aceMask));
863 }
864
865 /* don't add complementary DENY ACEs here */
866 ZERO_STRUCT(fake_fsp);
867 status = create_synthetic_smb_fname(talloc_tos(), path, NULL, NULL,
868 &fake_fsp.fsp_name);
869 if (!NT_STATUS_IS_OK(status)) {
870 errno = map_errno_from_nt_status(status);
871 return -1;
872 }
873 /* put the acl */
874 if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False) {
875 TALLOC_FREE(fake_fsp.fsp_name);
876 return -1;
877 }
878
879 TALLOC_FREE(fake_fsp.fsp_name);
880 return 0; /* ok for [f]chmod */
881 }
882
883 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
884 {
885 struct smb_filename *smb_fname_cpath;
886 int rc;
887 NTSTATUS status;
888
889 status = create_synthetic_smb_fname(
890 talloc_tos(), path, NULL, NULL, &smb_fname_cpath);
891
892 if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) {
893 return -1;
894 }
895
896 /* avoid chmod() if possible, to preserve acls */
897 if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) {
898 return 0;
899 }
900
901 rc = gpfsacl_emu_chmod(path, mode);
902 if (rc == 1)
903 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
904 return rc;
905 }
906
907 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
908 {
909 SMB_STRUCT_STAT st;
910 int rc;
911
912 if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) {
913 return -1;
914 }
915
916 /* avoid chmod() if possible, to preserve acls */
917 if ((st.st_ex_mode & ~S_IFMT) == mode) {
918 return 0;
919 }
920
921 rc = gpfsacl_emu_chmod(fsp->fsp_name->base_name, mode);
922 if (rc == 1)
923 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
924 return rc;
925 }
926
927 static int gpfs_set_xattr(struct vfs_handle_struct *handle, const char *path,
928 const char *name, const void *value, size_t size, int flags){
929 const char *attrstr = value;
930 unsigned int dosmode=0;
931 struct gpfs_winattr attrs;
932 int ret = 0;
933
934 DEBUG(10, ("gpfs_set_xattr: %s \n",path));
935
936 /* Only handle DOS Attributes */
937 if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
938 DEBUG(1, ("gpfs_set_xattr:name is %s\n",name));
939 return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags);
940 }
941
942 if (size < 2 || attrstr[0] != '0' || attrstr[1] != 'x' ||
943 sscanf(attrstr, "%x", &dosmode) != 1) {
944 DEBUG(1,("gpfs_set_xattr: Trying to set badly formed DOSATTRIB on file %s - %s\n", path, attrstr));
945 return False;
946 }
947
948 attrs.winAttrs = 0;
949 /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
950 if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
951 attrs.winAttrs |= GPFS_WINATTR_ARCHIVE;
952 }
953 if (dosmode & FILE_ATTRIBUTE_HIDDEN){
954 attrs.winAttrs |= GPFS_WINATTR_HIDDEN;
955 }
956 if (dosmode & FILE_ATTRIBUTE_SYSTEM){
957 attrs.winAttrs |= GPFS_WINATTR_SYSTEM;
958 }
959 if (dosmode & FILE_ATTRIBUTE_READONLY){
960 attrs.winAttrs |= GPFS_WINATTR_READONLY;
961 }
962
963
964 ret = set_gpfs_winattrs(CONST_DISCARD(char *, path),
965 GPFS_WINATTR_SET_ATTRS, &attrs);
966 if ( ret == -1){
967 if (errno == ENOSYS) {
968 return SMB_VFS_NEXT_SETXATTR(handle, path, name, value,
969 size, flags);
970 }
971
972 DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret));
973 return -1;
974 }
975
976 DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs));
977 return 0;
978 }
979
980 static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle, const char *path,
981 const char *name, void *value, size_t size){
982 char *attrstr = value;
983 unsigned int dosmode = 0;
984 struct gpfs_winattr attrs;
985 int ret = 0;
986 ssize_t result;
987
988 DEBUG(10, ("gpfs_get_xattr: %s \n",path));
989
990 /* Only handle DOS Attributes */
991 if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){
992 DEBUG(1, ("gpfs_get_xattr:name is %s\n",name));
993 return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size);
994 }
995
996 ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
997 if ( ret == -1){
998 if (errno == ENOSYS) {
999 return SMB_VFS_NEXT_GETXATTR(handle, path, name, value,
1000 size);
1001 }
1002
1003 DEBUG(1, ("gpfs_get_xattr: Get GPFS attributes failed: %d\n",ret));
1004 return -1;
1005 }
1006
1007 DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs));
1008
1009 /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/
1010 if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){
1011 dosmode |= FILE_ATTRIBUTE_ARCHIVE;
1012 }
1013 if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){
1014 dosmode |= FILE_ATTRIBUTE_HIDDEN;
1015 }
1016 if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){
1017 dosmode |= FILE_ATTRIBUTE_SYSTEM;
1018 }
1019 if (attrs.winAttrs & GPFS_WINATTR_READONLY){
1020 dosmode |= FILE_ATTRIBUTE_READONLY;
1021 }
1022
1023 result = snprintf(attrstr, size, "0x%x",
1024 dosmode & SAMBA_ATTRIBUTES_MASK) + 1;
1025
1026 DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr));
1027 return result;
1028 }
1029
1030 static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
1031 struct smb_filename *smb_fname)
1032 {
1033 struct gpfs_winattr attrs;
1034 char *fname = NULL;
1035 NTSTATUS status;
1036 int ret;
1037
1038 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1039 if (ret == -1) {
1040 return -1;
1041 }
1042 status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
1043 if (!NT_STATUS_IS_OK(status)) {
1044 errno = map_errno_from_nt_status(status);
1045 return -1;
1046 }
1047 ret = get_gpfs_winattrs(CONST_DISCARD(char *, fname), &attrs);
1048 TALLOC_FREE(fname);
1049 if (ret == 0) {
1050 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1051 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1052 }
1053 return 0;
1054 }
1055
1056 static int vfs_gpfs_fstat(struct vfs_handle_struct *handle,
1057 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1058 {
1059 struct gpfs_winattr attrs;
1060 int ret;
1061
1062 ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1063 if (ret == -1) {
1064 return -1;
1065 }
1066 if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
1067 return 0;
1068 }
1069 ret = smbd_fget_gpfs_winattrs(fsp->fh->fd, &attrs);
1070 if (ret == 0) {
1071 sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1072 sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1073 }
1074 return 0;
1075 }
1076
1077 static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
1078 struct smb_filename *smb_fname)
1079 {
1080 struct gpfs_winattr attrs;
1081 char *path = NULL;
1082 NTSTATUS status;
1083 int ret;
1084
1085 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1086 if (ret == -1) {
1087 return -1;
1088 }
1089 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1090 if (!NT_STATUS_IS_OK(status)) {
1091 errno = map_errno_from_nt_status(status);
1092 return -1;
1093 }
1094 ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs);
1095 TALLOC_FREE(path);
1096 if (ret == 0) {
1097 smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec;
1098 smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec;
1099 }
1100 return 0;
1101 }
1102
1103 static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle,
1104 const struct smb_filename *smb_fname,
1105 struct smb_file_time *ft)
1106 {
1107
1108 struct gpfs_winattr attrs;
1109 int ret;
1110 char *path = NULL;
1111 NTSTATUS status;
1112
1113 ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1114 if(ret == -1){
1115 DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed\n"));
1116 return -1;
1117 }
1118
1119 if(null_timespec(ft->create_time)){
1120 DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n"));
1121 return 0;
1122 }
1123
1124 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
1125 if (!NT_STATUS_IS_OK(status)) {
1126 errno = map_errno_from_nt_status(status);
1127 return -1;
1128 }
1129
1130 attrs.winAttrs = 0;
1131 attrs.creationTime.tv_sec = ft->create_time.tv_sec;
1132 attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
1133
1134 ret = set_gpfs_winattrs(CONST_DISCARD(char *, path),
1135 GPFS_WINATTR_SET_CREATION_TIME, &attrs);
1136 if(ret == -1 && errno != ENOSYS){
1137 DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret));
1138 return -1;
1139 }
1140 return 0;
1141
1142 }
1143
1144 int vfs_gpfs_connect(struct vfs_handle_struct *handle, const char *service,
1145 const char *user)
1146 {
1147 struct gpfs_config_data *config;
1148 int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
1149
1150 if (ret < 0) {
1151 return ret;
1152 }
1153
1154 config = talloc_zero(handle->conn, struct gpfs_config_data);
1155 if (!config) {
1156 SMB_VFS_NEXT_DISCONNECT(handle);
1157 DEBUG(0, ("talloc_zero() failed\n")); return -1;
1158 }
1159
1160 config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
1161 "sharemodes", true);
1162
1163 config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
1164 "leases", true);
1165
1166 SMB_VFS_HANDLE_SET_DATA(handle, config,
1167 NULL, struct gpfs_config_data,
1168 return -1);
1169
1170 return 0;
1171 }
1172
1173
1174 static int vfs_gpfs_ftruncate(struct vfs_handle_struct *handle,
1175 struct files_struct *fsp,
1176 SMB_OFF_T len)
1177 {
1178 int result;
1179
1180 result = smbd_gpfs_ftrunctate(fsp->fh->fd, len);
1181 if ((result == -1) && (errno == ENOSYS)) {
1182 return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
1183 }
1184 return result;
1185 }
1186
1187 static struct vfs_fn_pointers vfs_gpfs_fns = {
1188 .connect_fn = vfs_gpfs_connect,
1189 .kernel_flock = vfs_gpfs_kernel_flock,
1190 .linux_setlease = vfs_gpfs_setlease,
1191 .get_real_filename = vfs_gpfs_get_real_filename,
1192 .fget_nt_acl = gpfsacl_fget_nt_acl,
1193 .get_nt_acl = gpfsacl_get_nt_acl,
1194 .fset_nt_acl = gpfsacl_fset_nt_acl,
1195 .sys_acl_get_file = gpfsacl_sys_acl_get_file,
1196 .sys_acl_get_fd = gpfsacl_sys_acl_get_fd,
1197 .sys_acl_set_file = gpfsacl_sys_acl_set_file,
1198 .sys_acl_set_fd = gpfsacl_sys_acl_set_fd,
1199 .sys_acl_delete_def_file = gpfsacl_sys_acl_delete_def_file,
1200 .chmod = vfs_gpfs_chmod,
1201 .fchmod = vfs_gpfs_fchmod,
1202 .close_fn = vfs_gpfs_close,
1203 .setxattr = gpfs_set_xattr,
1204 .getxattr = gpfs_get_xattr,
1205 .stat = vfs_gpfs_stat,
1206 .fstat = vfs_gpfs_fstat,
1207 .lstat = vfs_gpfs_lstat,
1208 .ntimes = vfs_gpfs_ntimes,
1209 .ftruncate = vfs_gpfs_ftruncate,
1210 };
1211
1212 NTSTATUS vfs_gpfs_init(void);
1213 NTSTATUS vfs_gpfs_init(void)
1214 {
1215 init_gpfs();
1216
1217 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
1218 &vfs_gpfs_fns);
1219 }
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