source: branches/samba-3.0/source/modules/vfs_aixacl2.c

Last change on this file was 39, checked in by Paul Smedley, 18 years ago

Upgrade source to 3.0.25a
File size: 14.1 KB
Line 
1/*
2 * Convert JFS2 NFS4/AIXC acls to NT acls and vice versa.
3 *
4 * Copyright (C) Volker Lendecke, 2006
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21#include "includes.h"
22#include "nfs4_acls.h"
23
24#undef DBGC_CLASS
25#define DBGC_CLASS DBGC_VFS
26
27#define AIXACL2_MODULE_NAME "aixacl2"
28
29extern struct current_user current_user;
30extern int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid);
31extern BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp,
32 uint32 security_info_sent, SEC_DESC *psd);
33
34extern SMB_ACL_T aixacl_to_smbacl( struct acl *file_acl);
35extern struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
36
37typedef union aixjfs2_acl_t {
38 nfs4_acl_int_t jfs2_acl[1];
39 aixc_acl_t aixc_acl[1];
40}AIXJFS2_ACL_T;
41
42static int32_t aixacl2_getlen(AIXJFS2_ACL_T *acl, acl_type_t *type)
43{
44 int32_t len;
45
46 if(type->u64 == ACL_NFS4) {
47 len = acl->jfs2_acl[0].aclLength;
48 }
49 else {
50 if(type->u64 == ACL_AIXC) {
51 len = acl->aixc_acl[0].acl_len;
52 } else {
53 DEBUG(0,("aixacl2_getlen:unknown type:%d\n",type->u64));
54 return False;
55 }
56 }
57 DEBUG(10,("aixacl2_getlen:%d\n",len));
58 return len;
59}
60
61static AIXJFS2_ACL_T *aixjfs2_getacl_alloc(const char *fname, acl_type_t *type)
62{
63 AIXJFS2_ACL_T *acl;
64 size_t len = 200;
65 mode_t mode;
66 int ret;
67 uint64_t ctl_flag=0;
68 TALLOC_CTX *mem_ctx;
69
70 mem_ctx = main_loop_talloc_get();
71 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
72 if (acl == NULL) {
73 errno = ENOMEM;
74 return NULL;
75 }
76
77 if(type->u64 == ACL_ANY) {
78 ctl_flag = ctl_flag | GET_ACLINFO_ONLY;
79 }
80
81 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
82 if ((ret != 0) && (errno == ENOSPC)) {
83 len = aixacl2_getlen(acl, type) + sizeof(AIXJFS2_ACL_T);
84 DEBUG(10,("aixjfs2_getacl_alloc - acl_len:%d\n",len));
85
86 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
87 if (acl == NULL) {
88 errno = ENOMEM;
89 return NULL;
90 }
91
92 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
93 }
94 if (ret != 0) {
95 DEBUG(8, ("aclx_get failed with %s\n", strerror(errno)));
96 return NULL;
97 }
98
99 return acl;
100}
101
102static BOOL aixjfs2_get_nfs4_acl(files_struct *fsp,
103 SMB4ACL_T **ppacl, BOOL *pretryPosix)
104{
105 int32_t i;
106
107 AIXJFS2_ACL_T *pacl = NULL;
108 nfs4_acl_int_t *jfs2_acl = NULL;
109 nfs4_ace_int_t *jfs2_ace = NULL;
110 acl_type_t type;
111
112 DEBUG(10,("jfs2 get_nt_acl invoked for %s\n", fsp->fsp_name));
113
114 memset(&type, 0, sizeof(acl_type_t));
115 type.u64 = ACL_NFS4;
116
117 pacl = aixjfs2_getacl_alloc(fsp->fsp_name, &type);
118 if (pacl == NULL) {
119 DEBUG(9, ("aixjfs2_getacl_alloc failed for %s with %s\n",
120 fsp->fsp_name, strerror(errno)));
121 if (errno==ENOSYS)
122 *pretryPosix = True;
123 return False;
124 }
125
126 jfs2_acl = &pacl->jfs2_acl[0];
127 DEBUG(10, ("len: %d, version: %d, nace: %d, type: 0x%x\n",
128 jfs2_acl->aclLength, jfs2_acl->aclVersion, jfs2_acl->aclEntryN, type.u64));
129
130 *ppacl = smb_create_smb4acl();
131 if (*ppacl==NULL)
132 return False;
133
134 jfs2_ace = &jfs2_acl->aclEntry[0];
135 for (i=0; i<jfs2_acl->aclEntryN; i++) {
136 SMB_ACE4PROP_T aceprop;
137
138 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
139 "who: %d, aclLen: %d\n", jfs2_ace->aceType, jfs2_ace->flags,
140 jfs2_ace->aceFlags, jfs2_ace->aceMask, jfs2_ace->aceWho.id, jfs2_ace->entryLen));
141
142 aceprop.aceType = jfs2_ace->aceType;
143 aceprop.aceFlags = jfs2_ace->aceFlags;
144 aceprop.aceMask = jfs2_ace->aceMask;
145 aceprop.flags = (jfs2_ace->flags&ACE4_ID_SPECIAL) ? SMB_ACE4_ID_SPECIAL : 0;
146
147 /* don't care it's real content is only 16 or 32 bit */
148 aceprop.who.id = jfs2_ace->aceWho.id;
149
150 if (smb_add_ace4(*ppacl, &aceprop)==NULL)
151 return False;
152
153 /* iterate to the next jfs2 ace */
154 jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2_ace) + jfs2_ace->entryLen);
155 }
156
157 DEBUG(10,("jfs2 get_nt_acl finished successfully\n"));
158
159 return True;
160}
161
162static size_t aixjfs2_get_nt_acl_common(files_struct *fsp,
163 uint32 security_info, SEC_DESC **ppdesc)
164{
165 SMB4ACL_T *pacl = NULL;
166 BOOL result;
167 BOOL retryPosix = False;
168
169 *ppdesc = NULL;
170 result = aixjfs2_get_nfs4_acl(fsp, &pacl, &retryPosix);
171 if (retryPosix)
172 {
173 DEBUG(10, ("retrying with posix acl...\n"));
174 return get_nt_acl(fsp, security_info, ppdesc);
175 }
176 if (result==False)
177 return 0;
178
179 return smb_get_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
180}
181
182size_t aixjfs2_fget_nt_acl(vfs_handle_struct *handle,
183 files_struct *fsp, int fd, uint32 security_info,
184 SEC_DESC **ppdesc)
185{
186 return aixjfs2_get_nt_acl_common(fsp, security_info, ppdesc);
187}
188
189size_t aixjfs2_get_nt_acl(vfs_handle_struct *handle,
190 files_struct *fsp, const char *name,
191 uint32 security_info, SEC_DESC **ppdesc)
192{
193 return aixjfs2_get_nt_acl_common(fsp, security_info, ppdesc);
194}
195
196static SMB_ACL_T aixjfs2_get_posix_acl(const char *path, acl_type_t type)
197{
198 aixc_acl_t *pacl;
199 AIXJFS2_ACL_T *acl;
200 SMB_ACL_T result = NULL;
201 int ret;
202
203 acl = aixjfs2_getacl_alloc(path, &type);
204
205 if (acl == NULL) {
206 DEBUG(10, ("aixjfs2_getacl failed for %s with %s\n",
207 path, strerror(errno)));
208 if (errno == 0) {
209 errno = EINVAL;
210 }
211 goto done;
212 }
213
214 pacl = &acl->aixc_acl[0];
215 DEBUG(10, ("len: %d, mode: %d\n",
216 pacl->acl_len, pacl->acl_mode));
217
218 result = aixacl_to_smbacl(pacl);
219 if (result == NULL) {
220 goto done;
221 }
222
223 done:
224 if (errno != 0) {
225 SAFE_FREE(result);
226 }
227 return result;
228}
229
230SMB_ACL_T aixjfs2_sys_acl_get_file(vfs_handle_struct *handle,
231 const char *path_p,
232 SMB_ACL_TYPE_T type)
233{
234 acl_type_t aixjfs2_type;
235
236 switch(type) {
237 case SMB_ACL_TYPE_ACCESS:
238 aixjfs2_type.u64 = ACL_AIXC;
239 break;
240 case SMB_ACL_TYPE_DEFAULT:
241 DEBUG(0, ("Got AIX JFS2 unsupported type: %d\n", type));
242 return NULL;
243 default:
244 DEBUG(0, ("Got invalid type: %d\n", type));
245 smb_panic("exiting");
246 }
247
248 return aixjfs2_get_posix_acl(path_p, aixjfs2_type);
249}
250
251SMB_ACL_T aixjfs2_sys_acl_get_fd(vfs_handle_struct *handle,
252 files_struct *fsp,
253 int fd)
254{
255 acl_type_t aixjfs2_type;
256 aixjfs2_type.u64 = ACL_AIXC;
257
258 return aixjfs2_get_posix_acl(fsp->fsp_name, aixjfs2_type);
259}
260
261/*
262 * Test whether we have that aclType support on the given path
263 */
264static int aixjfs2_query_acl_support(
265 char *filepath,
266 uint64_t aclType,
267 acl_type_t *pacl_type_info
268)
269{
270 acl_types_list_t acl_type_list;
271 size_t acl_type_list_len = sizeof(acl_types_list_t);
272 uint32_t i;
273
274 memset(&acl_type_list, 0, sizeof(acl_type_list));
275
276 if (aclx_gettypes(filepath, &acl_type_list, &acl_type_list_len)) {
277 DEBUG(2, ("aclx_gettypes failed with error %s for %s\n",
278 strerror(errno), filepath));
279 return -1;
280 }
281
282 for(i=0; i<acl_type_list.num_entries; i++) {
283 if (acl_type_list.entries[i].u64==aclType) {
284 memcpy(pacl_type_info, acl_type_list.entries + i, sizeof(acl_type_t));
285 DEBUG(10, ("found %s ACL support for %s\n",
286 pacl_type_info->acl_type, filepath));
287 return 0;
288 }
289 }
290
291 return 1; /* haven't found that ACL type. */
292}
293
294static BOOL aixjfs2_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
295{
296 SMB4ACE_T *smbace;
297 TALLOC_CTX *mem_ctx;
298 nfs4_acl_int_t *jfs2acl;
299 int32_t entryLen;
300 uint32 aclLen, naces;
301 int rc;
302 acl_type_t acltype;
303
304 DEBUG(10, ("jfs2_process_smbacl invoked on %s\n", fsp->fsp_name));
305
306 /* no need to be freed which is alloced with mem_ctx */
307 mem_ctx = main_loop_talloc_get();
308
309 entryLen = sizeof(nfs4_ace_int_t);
310 if (entryLen & 0x03)
311 entryLen = entryLen + 4 - (entryLen%4);
312
313 naces = smb_get_naces(smbacl);
314 aclLen = ACL_V4_SIZ + naces * entryLen;
315 jfs2acl = (nfs4_acl_int_t *)TALLOC_SIZE(mem_ctx, aclLen);
316 if (jfs2acl==NULL) {
317 DEBUG(0, ("TALLOC_SIZE failed\n"));
318 errno = ENOMEM;
319 return False;
320 }
321
322 jfs2acl->aclLength = ACL_V4_SIZ;
323 jfs2acl->aclVersion = NFS4_ACL_INT_STRUCT_VERSION;
324 jfs2acl->aclEntryN = 0;
325
326 for(smbace = smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace))
327 {
328 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
329 nfs4_ace_int_t *jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2acl) + jfs2acl->aclLength);
330
331 memset(jfs2_ace, 0, entryLen);
332 jfs2_ace->entryLen = entryLen; /* won't store textual "who" */
333 jfs2_ace->aceType = aceprop->aceType; /* only ACCES|DENY supported by jfs2 */
334 jfs2_ace->aceFlags = aceprop->aceFlags;
335 jfs2_ace->aceMask = aceprop->aceMask;
336 jfs2_ace->flags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_ID_SPECIAL : 0;
337
338 /* don't care it's real content is only 16 or 32 bit */
339 jfs2_ace->aceWho.id = aceprop->who.id;
340
341 /* iterate to the next jfs2 ace */
342 jfs2acl->aclLength += jfs2_ace->entryLen;
343 jfs2acl->aclEntryN++;
344 }
345 SMB_ASSERT(jfs2acl->aclEntryN==naces);
346
347 /* Don't query it (again) */
348 memset(&acltype, 0, sizeof(acl_type_t));
349 acltype.u64 = ACL_NFS4;
350
351 /* won't set S_ISUID - the only one JFS2/NFS4 accepts */
352 rc = aclx_put(
353 fsp->fsp_name,
354 SET_ACL, /* set only the ACL, not mode bits */
355 acltype, /* not a pointer !!! */
356 jfs2acl,
357 jfs2acl->aclLength,
358 0 /* don't set here mode bits */
359 );
360 if (rc) {
361 DEBUG(8, ("aclx_put failed with %s\n", strerror(errno)));
362 return False;
363 }
364
365 DEBUG(10, ("jfs2_process_smbacl succeeded.\n"));
366 return True;
367}
368
369static BOOL aixjfs2_set_nt_acl_common(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
370{
371 acl_type_t acl_type_info;
372 BOOL result = False;
373 int rc;
374
375 rc = aixjfs2_query_acl_support(
376 fsp->fsp_name,
377 ACL_NFS4,
378 &acl_type_info);
379
380 if (rc==0)
381 {
382 result = smb_set_nt_acl_nfs4(
383 fsp, security_info_sent, psd,
384 aixjfs2_process_smbacl);
385 } else if (rc==1) { /* assume POSIX ACL - by default... */
386 result = set_nt_acl(fsp, security_info_sent, psd);
387 } else
388 result = False; /* query failed */
389
390 return result;
391}
392
393BOOL aixjfs2_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info_sent, SEC_DESC *psd)
394{
395 return aixjfs2_set_nt_acl_common(fsp, security_info_sent, psd);
396}
397
398BOOL aixjfs2_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, SEC_DESC *psd)
399{
400 return aixjfs2_set_nt_acl_common(fsp, security_info_sent, psd);
401}
402
403int aixjfs2_sys_acl_set_file(vfs_handle_struct *handle,
404 const char *name,
405 SMB_ACL_TYPE_T type,
406 SMB_ACL_T theacl)
407{
408 struct acl *acl_aixc;
409 acl_type_t acl_type_info;
410 int rc;
411
412 DEBUG(10, ("aixjfs2_sys_acl_set_file invoked for %s", name));
413
414 rc = aixjfs2_query_acl_support((char *)name, ACL_AIXC, &acl_type_info);
415 if (rc) {
416 DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
417 return -1;
418 }
419
420 acl_aixc = aixacl_smb_to_aixacl(type, theacl);
421 if (!acl_aixc)
422 return -1;
423
424 rc = aclx_put(
425 (char *)name,
426 SET_ACL, /* set only the ACL, not mode bits */
427 acl_type_info,
428 acl_aixc,
429 acl_aixc->acl_len,
430 0
431 );
432 if (rc) {
433 DEBUG(2, ("aclx_put failed with %s for %s\n",
434 strerror(errno), name));
435 return -1;
436 }
437
438 return 0;
439}
440
441int aixjfs2_sys_acl_set_fd(vfs_handle_struct *handle,
442 files_struct *fsp,
443 int fd, SMB_ACL_T theacl)
444{
445 struct acl *acl_aixc;
446 acl_type_t acl_type_info;
447 int rc;
448
449 DEBUG(10, ("aixjfs2_sys_acl_set_fd invoked for %s", fsp->fsp_name));
450
451 rc = aixjfs2_query_acl_support(fsp->fsp_name, ACL_AIXC, &acl_type_info);
452 if (rc) {
453 DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
454 return -1;
455 }
456
457 acl_aixc = aixacl_smb_to_aixacl(SMB_ACL_TYPE_ACCESS, theacl);
458 if (!acl_aixc)
459 return -1;
460
461 rc = aclx_fput(
462 fd,
463 SET_ACL, /* set only the ACL, not mode bits */
464 acl_type_info,
465 acl_aixc,
466 acl_aixc->acl_len,
467 0
468 );
469 if (rc) {
470 DEBUG(2, ("aclx_fput failed with %s for %s\n",
471 strerror(errno), fsp->fsp_name));
472 return -1;
473 }
474
475 return 0;
476}
477
478int aixjfs2_sys_acl_delete_def_file(vfs_handle_struct *handle,
479 const char *path)
480{
481 /* Not available under AIXC ACL */
482 /* Don't report here any error otherwise */
483 /* upper layer will break the normal execution */
484 return 0;
485}
486
487
488/* VFS operations structure */
489
490static vfs_op_tuple aixjfs2_ops[] =
491{
492 {SMB_VFS_OP(aixjfs2_fget_nt_acl),
493 SMB_VFS_OP_FGET_NT_ACL,
494 SMB_VFS_LAYER_TRANSPARENT},
495
496 {SMB_VFS_OP(aixjfs2_get_nt_acl),
497 SMB_VFS_OP_GET_NT_ACL,
498 SMB_VFS_LAYER_TRANSPARENT},
499
500 {SMB_VFS_OP(aixjfs2_fset_nt_acl),
501 SMB_VFS_OP_FSET_NT_ACL,
502 SMB_VFS_LAYER_TRANSPARENT},
503
504 {SMB_VFS_OP(aixjfs2_set_nt_acl),
505 SMB_VFS_OP_SET_NT_ACL,
506 SMB_VFS_LAYER_TRANSPARENT},
507
508 {SMB_VFS_OP(aixjfs2_sys_acl_get_file),
509 SMB_VFS_OP_SYS_ACL_GET_FILE,
510 SMB_VFS_LAYER_TRANSPARENT},
511
512 {SMB_VFS_OP(aixjfs2_sys_acl_get_fd),
513 SMB_VFS_OP_SYS_ACL_GET_FD,
514 SMB_VFS_LAYER_TRANSPARENT},
515
516 {SMB_VFS_OP(aixjfs2_sys_acl_set_file),
517 SMB_VFS_OP_SYS_ACL_SET_FILE,
518 SMB_VFS_LAYER_TRANSPARENT},
519
520 {SMB_VFS_OP(aixjfs2_sys_acl_set_fd),
521 SMB_VFS_OP_SYS_ACL_SET_FD,
522 SMB_VFS_LAYER_TRANSPARENT},
523
524 {SMB_VFS_OP(aixjfs2_sys_acl_delete_def_file),
525 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
526 SMB_VFS_LAYER_TRANSPARENT},
527
528 {SMB_VFS_OP(NULL),
529 SMB_VFS_OP_NOOP,
530 SMB_VFS_LAYER_NOOP}
531};
532
533NTSTATUS vfs_aixacl2_init(void);
534NTSTATUS vfs_aixacl2_init(void)
535{
536 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME,
537 aixjfs2_ops);
538}
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