source: vendor/3.5.0/source3/modules/vfs_aixacl2.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 12.8 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 3 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, see <http://www.gnu.org/licenses/>.
18 */
19
20#include "includes.h"
21#include "nfs4_acls.h"
22
23#undef DBGC_CLASS
24#define DBGC_CLASS DBGC_VFS
25
26#define AIXACL2_MODULE_NAME "aixacl2"
27
28extern SMB_ACL_T aixacl_to_smbacl( struct acl *file_acl);
29extern struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
30
31typedef union aixjfs2_acl_t {
32 nfs4_acl_int_t jfs2_acl[1];
33 aixc_acl_t aixc_acl[1];
34}AIXJFS2_ACL_T;
35
36static int32_t aixacl2_getlen(AIXJFS2_ACL_T *acl, acl_type_t *type)
37{
38 int32_t len;
39
40 if(type->u64 == ACL_NFS4) {
41 len = acl->jfs2_acl[0].aclLength;
42 }
43 else {
44 if(type->u64 == ACL_AIXC) {
45 len = acl->aixc_acl[0].acl_len;
46 } else {
47 DEBUG(0,("aixacl2_getlen:unknown type:%d\n",type->u64));
48 return False;
49 }
50 }
51 DEBUG(10,("aixacl2_getlen:%d\n",len));
52 return len;
53}
54
55static AIXJFS2_ACL_T *aixjfs2_getacl_alloc(const char *fname, acl_type_t *type)
56{
57 AIXJFS2_ACL_T *acl;
58 size_t len = 200;
59 mode_t mode;
60 int ret;
61 uint64_t ctl_flag=0;
62 TALLOC_CTX *mem_ctx;
63
64 mem_ctx = talloc_tos();
65 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
66 if (acl == NULL) {
67 errno = ENOMEM;
68 return NULL;
69 }
70
71 if(type->u64 == ACL_ANY) {
72 ctl_flag = ctl_flag | GET_ACLINFO_ONLY;
73 }
74
75 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
76 if ((ret != 0) && (errno == ENOSPC)) {
77 len = aixacl2_getlen(acl, type) + sizeof(AIXJFS2_ACL_T);
78 DEBUG(10,("aixjfs2_getacl_alloc - acl_len:%d\n",len));
79
80 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
81 if (acl == NULL) {
82 errno = ENOMEM;
83 return NULL;
84 }
85
86 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
87 }
88 if (ret != 0) {
89 DEBUG(8, ("aclx_get failed with %s\n", strerror(errno)));
90 return NULL;
91 }
92
93 return acl;
94}
95
96static bool aixjfs2_get_nfs4_acl(const char *name,
97 SMB4ACL_T **ppacl, bool *pretryPosix)
98{
99 int32_t i;
100
101 AIXJFS2_ACL_T *pacl = NULL;
102 nfs4_acl_int_t *jfs2_acl = NULL;
103 nfs4_ace_int_t *jfs2_ace = NULL;
104 acl_type_t type;
105
106 DEBUG(10,("jfs2 get_nt_acl invoked for %s\n", name));
107
108 memset(&type, 0, sizeof(acl_type_t));
109 type.u64 = ACL_NFS4;
110
111 pacl = aixjfs2_getacl_alloc(name, &type);
112 if (pacl == NULL) {
113 DEBUG(9, ("aixjfs2_getacl_alloc failed for %s with %s\n",
114 name, strerror(errno)));
115 if (errno==ENOSYS)
116 *pretryPosix = True;
117 return False;
118 }
119
120 jfs2_acl = &pacl->jfs2_acl[0];
121 DEBUG(10, ("len: %d, version: %d, nace: %d, type: 0x%x\n",
122 jfs2_acl->aclLength, jfs2_acl->aclVersion, jfs2_acl->aclEntryN, type.u64));
123
124 *ppacl = smb_create_smb4acl();
125 if (*ppacl==NULL)
126 return False;
127
128 jfs2_ace = &jfs2_acl->aclEntry[0];
129 for (i=0; i<jfs2_acl->aclEntryN; i++) {
130 SMB_ACE4PROP_T aceprop;
131
132 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
133 "who: %d, aclLen: %d\n", jfs2_ace->aceType, jfs2_ace->flags,
134 jfs2_ace->aceFlags, jfs2_ace->aceMask, jfs2_ace->aceWho.id, jfs2_ace->entryLen));
135
136 aceprop.aceType = jfs2_ace->aceType;
137 aceprop.aceFlags = jfs2_ace->aceFlags;
138 aceprop.aceMask = jfs2_ace->aceMask;
139 aceprop.flags = (jfs2_ace->flags&ACE4_ID_SPECIAL) ? SMB_ACE4_ID_SPECIAL : 0;
140
141 /* don't care it's real content is only 16 or 32 bit */
142 aceprop.who.id = jfs2_ace->aceWho.id;
143
144 if (smb_add_ace4(*ppacl, &aceprop)==NULL)
145 return False;
146
147 /* iterate to the next jfs2 ace */
148 jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2_ace) + jfs2_ace->entryLen);
149 }
150
151 DEBUG(10,("jfs2 get_nt_acl finished successfully\n"));
152
153 return True;
154}
155
156static NTSTATUS aixjfs2_fget_nt_acl(vfs_handle_struct *handle,
157 files_struct *fsp, uint32 security_info,
158 SEC_DESC **ppdesc)
159{
160 SMB4ACL_T *pacl = NULL;
161 bool result;
162 bool retryPosix = False;
163
164 *ppdesc = NULL;
165 result = aixjfs2_get_nfs4_acl(fsp->fsp_name->base_name, &pacl,
166 &retryPosix);
167 if (retryPosix)
168 {
169 DEBUG(10, ("retrying with posix acl...\n"));
170 return posix_fget_nt_acl(fsp, security_info, ppdesc);
171 }
172 if (result==False)
173 return NT_STATUS_ACCESS_DENIED;
174
175 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
176}
177
178static NTSTATUS aixjfs2_get_nt_acl(vfs_handle_struct *handle,
179 const char *name,
180 uint32 security_info, SEC_DESC **ppdesc)
181{
182 SMB4ACL_T *pacl = NULL;
183 bool result;
184 bool retryPosix = False;
185
186 *ppdesc = NULL;
187 result = aixjfs2_get_nfs4_acl(name, &pacl, &retryPosix);
188 if (retryPosix)
189 {
190 DEBUG(10, ("retrying with posix acl...\n"));
191 return posix_get_nt_acl(handle->conn, name, security_info,
192 ppdesc);
193 }
194 if (result==False)
195 return NT_STATUS_ACCESS_DENIED;
196
197 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc,
198 pacl);
199}
200
201static SMB_ACL_T aixjfs2_get_posix_acl(const char *path, acl_type_t type)
202{
203 aixc_acl_t *pacl;
204 AIXJFS2_ACL_T *acl;
205 SMB_ACL_T result = NULL;
206 int ret;
207
208 acl = aixjfs2_getacl_alloc(path, &type);
209
210 if (acl == NULL) {
211 DEBUG(10, ("aixjfs2_getacl failed for %s with %s\n",
212 path, strerror(errno)));
213 if (errno == 0) {
214 errno = EINVAL;
215 }
216 goto done;
217 }
218
219 pacl = &acl->aixc_acl[0];
220 DEBUG(10, ("len: %d, mode: %d\n",
221 pacl->acl_len, pacl->acl_mode));
222
223 result = aixacl_to_smbacl(pacl);
224 if (result == NULL) {
225 goto done;
226 }
227
228 done:
229 if (errno != 0) {
230 SAFE_FREE(result);
231 }
232 return result;
233}
234
235SMB_ACL_T aixjfs2_sys_acl_get_file(vfs_handle_struct *handle,
236 const char *path_p,
237 SMB_ACL_TYPE_T type)
238{
239 acl_type_t aixjfs2_type;
240
241 switch(type) {
242 case SMB_ACL_TYPE_ACCESS:
243 aixjfs2_type.u64 = ACL_AIXC;
244 break;
245 case SMB_ACL_TYPE_DEFAULT:
246 DEBUG(0, ("Got AIX JFS2 unsupported type: %d\n", type));
247 return NULL;
248 default:
249 DEBUG(0, ("Got invalid type: %d\n", type));
250 smb_panic("exiting");
251 }
252
253 return aixjfs2_get_posix_acl(path_p, aixjfs2_type);
254}
255
256SMB_ACL_T aixjfs2_sys_acl_get_fd(vfs_handle_struct *handle,
257 files_struct *fsp)
258{
259 acl_type_t aixjfs2_type;
260 aixjfs2_type.u64 = ACL_AIXC;
261
262 return aixjfs2_get_posix_acl(fsp->fsp_name->base_name, aixjfs2_type);
263}
264
265/*
266 * Test whether we have that aclType support on the given path
267 */
268static int aixjfs2_query_acl_support(
269 char *filepath,
270 uint64_t aclType,
271 acl_type_t *pacl_type_info
272)
273{
274 acl_types_list_t acl_type_list;
275 size_t acl_type_list_len = sizeof(acl_types_list_t);
276 uint32_t i;
277
278 memset(&acl_type_list, 0, sizeof(acl_type_list));
279
280 if (aclx_gettypes(filepath, &acl_type_list, &acl_type_list_len)) {
281 DEBUG(2, ("aclx_gettypes failed with error %s for %s\n",
282 strerror(errno), filepath));
283 return -1;
284 }
285
286 for(i=0; i<acl_type_list.num_entries; i++) {
287 if (acl_type_list.entries[i].u64==aclType) {
288 memcpy(pacl_type_info, acl_type_list.entries + i, sizeof(acl_type_t));
289 DEBUG(10, ("found %s ACL support for %s\n",
290 pacl_type_info->acl_type, filepath));
291 return 0;
292 }
293 }
294
295 return 1; /* haven't found that ACL type. */
296}
297
298static bool aixjfs2_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
299{
300 SMB4ACE_T *smbace;
301 TALLOC_CTX *mem_ctx;
302 nfs4_acl_int_t *jfs2acl;
303 int32_t entryLen;
304 uint32 aclLen, naces;
305 int rc;
306 acl_type_t acltype;
307
308 DEBUG(10, ("jfs2_process_smbacl invoked on %s\n", fsp_str_dbg(fsp)));
309
310 /* no need to be freed which is alloced with mem_ctx */
311 mem_ctx = talloc_tos();
312
313 entryLen = sizeof(nfs4_ace_int_t);
314 if (entryLen & 0x03)
315 entryLen = entryLen + 4 - (entryLen%4);
316
317 naces = smb_get_naces(smbacl);
318 aclLen = ACL_V4_SIZ + naces * entryLen;
319 jfs2acl = (nfs4_acl_int_t *)TALLOC_SIZE(mem_ctx, aclLen);
320 if (jfs2acl==NULL) {
321 DEBUG(0, ("TALLOC_SIZE failed\n"));
322 errno = ENOMEM;
323 return False;
324 }
325
326 jfs2acl->aclLength = ACL_V4_SIZ;
327 jfs2acl->aclVersion = NFS4_ACL_INT_STRUCT_VERSION;
328 jfs2acl->aclEntryN = 0;
329
330 for(smbace = smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace))
331 {
332 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
333 nfs4_ace_int_t *jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2acl) + jfs2acl->aclLength);
334
335 memset(jfs2_ace, 0, entryLen);
336 jfs2_ace->entryLen = entryLen; /* won't store textual "who" */
337 jfs2_ace->aceType = aceprop->aceType; /* only ACCES|DENY supported by jfs2 */
338 jfs2_ace->aceFlags = aceprop->aceFlags;
339 jfs2_ace->aceMask = aceprop->aceMask;
340 jfs2_ace->flags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_ID_SPECIAL : 0;
341
342 /* don't care it's real content is only 16 or 32 bit */
343 jfs2_ace->aceWho.id = aceprop->who.id;
344
345 /* iterate to the next jfs2 ace */
346 jfs2acl->aclLength += jfs2_ace->entryLen;
347 jfs2acl->aclEntryN++;
348 }
349 SMB_ASSERT(jfs2acl->aclEntryN==naces);
350
351 /* Don't query it (again) */
352 memset(&acltype, 0, sizeof(acl_type_t));
353 acltype.u64 = ACL_NFS4;
354
355 /* won't set S_ISUID - the only one JFS2/NFS4 accepts */
356 rc = aclx_put(
357 fsp->fsp_name->base_name,
358 SET_ACL, /* set only the ACL, not mode bits */
359 acltype, /* not a pointer !!! */
360 jfs2acl,
361 jfs2acl->aclLength,
362 0 /* don't set here mode bits */
363 );
364 if (rc) {
365 DEBUG(8, ("aclx_put failed with %s\n", strerror(errno)));
366 return False;
367 }
368
369 DEBUG(10, ("jfs2_process_smbacl succeeded.\n"));
370 return True;
371}
372
373static NTSTATUS aixjfs2_set_nt_acl_common(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
374{
375 acl_type_t acl_type_info;
376 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
377 int rc;
378
379 rc = aixjfs2_query_acl_support(
380 fsp->fsp_name,
381 ACL_NFS4,
382 &acl_type_info);
383
384 if (rc==0)
385 {
386 result = smb_set_nt_acl_nfs4(
387 fsp, security_info_sent, psd,
388 aixjfs2_process_smbacl);
389 } else if (rc==1) { /* assume POSIX ACL - by default... */
390 result = set_nt_acl(fsp, security_info_sent, psd);
391 } else
392 result = map_nt_error_from_unix(errno); /* query failed */
393
394 return result;
395}
396
397NTSTATUS aixjfs2_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
398{
399 return aixjfs2_set_nt_acl_common(fsp, security_info_sent, psd);
400}
401
402int aixjfs2_sys_acl_set_file(vfs_handle_struct *handle,
403 const char *name,
404 SMB_ACL_TYPE_T type,
405 SMB_ACL_T theacl)
406{
407 struct acl *acl_aixc;
408 acl_type_t acl_type_info;
409 int rc;
410
411 DEBUG(10, ("aixjfs2_sys_acl_set_file invoked for %s", name));
412
413 rc = aixjfs2_query_acl_support((char *)name, ACL_AIXC, &acl_type_info);
414 if (rc) {
415 DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
416 return -1;
417 }
418
419 acl_aixc = aixacl_smb_to_aixacl(type, theacl);
420 if (!acl_aixc)
421 return -1;
422
423 rc = aclx_put(
424 (char *)name,
425 SET_ACL, /* set only the ACL, not mode bits */
426 acl_type_info,
427 acl_aixc,
428 acl_aixc->acl_len,
429 0
430 );
431 if (rc) {
432 DEBUG(2, ("aclx_put failed with %s for %s\n",
433 strerror(errno), name));
434 return -1;
435 }
436
437 return 0;
438}
439
440int aixjfs2_sys_acl_set_fd(vfs_handle_struct *handle,
441 files_struct *fsp,
442 SMB_ACL_T theacl)
443{
444 struct acl *acl_aixc;
445 acl_type_t acl_type_info;
446 int rc;
447
448 DEBUG(10, ("aixjfs2_sys_acl_set_fd invoked for %s", fsp_str_dbg(fsp)));
449
450 rc = aixjfs2_query_acl_support(fsp->fsp_name->base_name, ACL_AIXC,
451 &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 fsp->fh->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_str_dbg(fsp)));
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
487static struct vfs_fn_pointers vfs_aixacl2_fns = {
488 .fget_nt_acl = aixjfs2_fget_nt_acl,
489 .get_nt_acl = aixjfs2_get_nt_acl,
490 .fset_nt_acl = aixjfs2_fset_nt_acl,
491 .sys_acl_get_file = aixjfs2_sys_acl_get_file,
492 .sys_acl_get_fd = aixjfs2_sys_acl_get_fd,
493 .sys_acl_set_file = aixjfs2_sys_acl_set_file,
494 .sys_acl_set_fd = aixjfs2_sys_acl_set_fd,
495 .sys_acl_delete_def_file = aixjfs2_sys_acl_delete_def_file
496}
497
498NTSTATUS vfs_aixacl2_init(void);
499NTSTATUS vfs_aixacl2_init(void)
500{
501 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME,
502 &vfs_aixacl2_fns);
503}
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