source: vendor/3.6.0/source3/modules/vfs_aixacl2.c

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 13.4 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 "smbd/smbd.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 SMB_ACL_T aixacl_to_smbacl( struct acl *file_acl);
30extern struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
31
32typedef union aixjfs2_acl_t {
33 nfs4_acl_int_t jfs2_acl[1];
34 aixc_acl_t aixc_acl[1];
35}AIXJFS2_ACL_T;
36
37static int32_t aixacl2_getlen(AIXJFS2_ACL_T *acl, acl_type_t *type)
38{
39 int32_t len;
40
41 if(type->u64 == ACL_NFS4) {
42 len = acl->jfs2_acl[0].aclLength;
43 }
44 else {
45 if(type->u64 == ACL_AIXC) {
46 len = acl->aixc_acl[0].acl_len;
47 } else {
48 DEBUG(0,("aixacl2_getlen:unknown type:%d\n",type->u64));
49 return False;
50 }
51 }
52 DEBUG(10,("aixacl2_getlen:%d\n",len));
53 return len;
54}
55
56static AIXJFS2_ACL_T *aixjfs2_getacl_alloc(const char *fname, acl_type_t *type)
57{
58 AIXJFS2_ACL_T *acl;
59 size_t len = 200;
60 mode_t mode;
61 int ret;
62 uint64_t ctl_flag=0;
63 TALLOC_CTX *mem_ctx;
64
65 mem_ctx = talloc_tos();
66 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
67 if (acl == NULL) {
68 errno = ENOMEM;
69 return NULL;
70 }
71
72 if(type->u64 == ACL_ANY) {
73 ctl_flag = ctl_flag | GET_ACLINFO_ONLY;
74 }
75
76 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
77 if ((ret != 0) && (errno == ENOSPC)) {
78 len = aixacl2_getlen(acl, type) + sizeof(AIXJFS2_ACL_T);
79 DEBUG(10,("aixjfs2_getacl_alloc - acl_len:%d\n",len));
80
81 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
82 if (acl == NULL) {
83 errno = ENOMEM;
84 return NULL;
85 }
86
87 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
88 }
89 if (ret != 0) {
90 DEBUG(8, ("aclx_get failed with %s\n", strerror(errno)));
91 return NULL;
92 }
93
94 return acl;
95}
96
97static bool aixjfs2_get_nfs4_acl(const char *name,
98 SMB4ACL_T **ppacl, bool *pretryPosix)
99{
100 int32_t i;
101
102 AIXJFS2_ACL_T *pacl = NULL;
103 nfs4_acl_int_t *jfs2_acl = NULL;
104 nfs4_ace_int_t *jfs2_ace = NULL;
105 acl_type_t type;
106
107 DEBUG(10,("jfs2 get_nt_acl invoked for %s\n", name));
108
109 memset(&type, 0, sizeof(acl_type_t));
110 type.u64 = ACL_NFS4;
111
112 pacl = aixjfs2_getacl_alloc(name, &type);
113 if (pacl == NULL) {
114 DEBUG(9, ("aixjfs2_getacl_alloc failed for %s with %s\n",
115 name, strerror(errno)));
116 if (errno==ENOSYS)
117 *pretryPosix = True;
118 return False;
119 }
120
121 jfs2_acl = &pacl->jfs2_acl[0];
122 DEBUG(10, ("len: %d, version: %d, nace: %d, type: 0x%x\n",
123 jfs2_acl->aclLength, jfs2_acl->aclVersion, jfs2_acl->aclEntryN, type.u64));
124
125 *ppacl = smb_create_smb4acl();
126 if (*ppacl==NULL)
127 return False;
128
129 jfs2_ace = &jfs2_acl->aclEntry[0];
130 for (i=0; i<jfs2_acl->aclEntryN; i++) {
131 SMB_ACE4PROP_T aceprop;
132
133 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
134 "who: %d, aclLen: %d\n", jfs2_ace->aceType, jfs2_ace->flags,
135 jfs2_ace->aceFlags, jfs2_ace->aceMask, jfs2_ace->aceWho.id, jfs2_ace->entryLen));
136
137 aceprop.aceType = jfs2_ace->aceType;
138 aceprop.aceFlags = jfs2_ace->aceFlags;
139 aceprop.aceMask = jfs2_ace->aceMask;
140 aceprop.flags = (jfs2_ace->flags&ACE4_ID_SPECIAL) ? SMB_ACE4_ID_SPECIAL : 0;
141
142 /* don't care it's real content is only 16 or 32 bit */
143 aceprop.who.id = jfs2_ace->aceWho.id;
144
145 if (smb_add_ace4(*ppacl, &aceprop)==NULL)
146 return False;
147
148 /* iterate to the next jfs2 ace */
149 jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2_ace) + jfs2_ace->entryLen);
150 }
151
152 DEBUG(10,("jfs2 get_nt_acl finished successfully\n"));
153
154 return True;
155}
156
157static NTSTATUS aixjfs2_fget_nt_acl(vfs_handle_struct *handle,
158 files_struct *fsp, uint32 security_info,
159 struct security_descriptor **ppdesc)
160{
161 SMB4ACL_T *pacl = NULL;
162 bool result;
163 bool retryPosix = False;
164
165 *ppdesc = NULL;
166 result = aixjfs2_get_nfs4_acl(fsp->fsp_name->base_name, &pacl,
167 &retryPosix);
168 if (retryPosix)
169 {
170 DEBUG(10, ("retrying with posix acl...\n"));
171 return posix_fget_nt_acl(fsp, security_info, ppdesc);
172 }
173 if (result==False)
174 return NT_STATUS_ACCESS_DENIED;
175
176 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
177}
178
179static NTSTATUS aixjfs2_get_nt_acl(vfs_handle_struct *handle,
180 const char *name,
181 uint32 security_info, struct security_descriptor **ppdesc)
182{
183 SMB4ACL_T *pacl = NULL;
184 bool result;
185 bool retryPosix = False;
186
187 *ppdesc = NULL;
188 result = aixjfs2_get_nfs4_acl(name, &pacl, &retryPosix);
189 if (retryPosix)
190 {
191 DEBUG(10, ("retrying with posix acl...\n"));
192 return posix_get_nt_acl(handle->conn, name, security_info,
193 ppdesc);
194 }
195 if (result==False)
196 return NT_STATUS_ACCESS_DENIED;
197
198 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc,
199 pacl);
200}
201
202static SMB_ACL_T aixjfs2_get_posix_acl(const char *path, acl_type_t type)
203{
204 aixc_acl_t *pacl;
205 AIXJFS2_ACL_T *acl;
206 SMB_ACL_T result = NULL;
207 int ret;
208
209 acl = aixjfs2_getacl_alloc(path, &type);
210
211 if (acl == NULL) {
212 DEBUG(10, ("aixjfs2_getacl failed for %s with %s\n",
213 path, strerror(errno)));
214 if (errno == 0) {
215 errno = EINVAL;
216 }
217 goto done;
218 }
219
220 pacl = &acl->aixc_acl[0];
221 DEBUG(10, ("len: %d, mode: %d\n",
222 pacl->acl_len, pacl->acl_mode));
223
224 result = aixacl_to_smbacl(pacl);
225 if (result == NULL) {
226 goto done;
227 }
228
229 done:
230 if (errno != 0) {
231 SAFE_FREE(result);
232 }
233 return result;
234}
235
236SMB_ACL_T aixjfs2_sys_acl_get_file(vfs_handle_struct *handle,
237 const char *path_p,
238 SMB_ACL_TYPE_T type)
239{
240 acl_type_t aixjfs2_type;
241
242 switch(type) {
243 case SMB_ACL_TYPE_ACCESS:
244 aixjfs2_type.u64 = ACL_AIXC;
245 break;
246 case SMB_ACL_TYPE_DEFAULT:
247 DEBUG(0, ("Got AIX JFS2 unsupported type: %d\n", type));
248 return NULL;
249 default:
250 DEBUG(0, ("Got invalid type: %d\n", type));
251 smb_panic("exiting");
252 }
253
254 return aixjfs2_get_posix_acl(path_p, aixjfs2_type);
255}
256
257SMB_ACL_T aixjfs2_sys_acl_get_fd(vfs_handle_struct *handle,
258 files_struct *fsp)
259{
260 acl_type_t aixjfs2_type;
261 aixjfs2_type.u64 = ACL_AIXC;
262
263 return aixjfs2_get_posix_acl(fsp->fsp_name->base_name, aixjfs2_type);
264}
265
266/*
267 * Test whether we have that aclType support on the given path
268 */
269static int aixjfs2_query_acl_support(
270 char *filepath,
271 uint64_t aclType,
272 acl_type_t *pacl_type_info
273)
274{
275 acl_types_list_t acl_type_list;
276 size_t acl_type_list_len = sizeof(acl_types_list_t);
277 uint32_t i;
278
279 memset(&acl_type_list, 0, sizeof(acl_type_list));
280
281 if (aclx_gettypes(filepath, &acl_type_list, &acl_type_list_len)) {
282 DEBUG(2, ("aclx_gettypes failed with error %s for %s\n",
283 strerror(errno), filepath));
284 return -1;
285 }
286
287 for(i=0; i<acl_type_list.num_entries; i++) {
288 if (acl_type_list.entries[i].u64==aclType) {
289 memcpy(pacl_type_info, acl_type_list.entries + i, sizeof(acl_type_t));
290 DEBUG(10, ("found %s ACL support for %s\n",
291 pacl_type_info->acl_type, filepath));
292 return 0;
293 }
294 }
295
296 return 1; /* haven't found that ACL type. */
297}
298
299static bool aixjfs2_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
300{
301 SMB4ACE_T *smbace;
302 TALLOC_CTX *mem_ctx;
303 nfs4_acl_int_t *jfs2acl;
304 int32_t entryLen;
305 uint32 aclLen, naces;
306 int rc;
307 acl_type_t acltype;
308
309 DEBUG(10, ("jfs2_process_smbacl invoked on %s\n", fsp_str_dbg(fsp)));
310
311 /* no need to be freed which is alloced with mem_ctx */
312 mem_ctx = talloc_tos();
313
314 entryLen = sizeof(nfs4_ace_int_t);
315 if (entryLen & 0x03)
316 entryLen = entryLen + 4 - (entryLen%4);
317
318 naces = smb_get_naces(smbacl);
319 aclLen = ACL_V4_SIZ + naces * entryLen;
320 jfs2acl = (nfs4_acl_int_t *)TALLOC_SIZE(mem_ctx, aclLen);
321 if (jfs2acl==NULL) {
322 DEBUG(0, ("TALLOC_SIZE failed\n"));
323 errno = ENOMEM;
324 return False;
325 }
326
327 jfs2acl->aclLength = ACL_V4_SIZ;
328 jfs2acl->aclVersion = NFS4_ACL_INT_STRUCT_VERSION;
329 jfs2acl->aclEntryN = 0;
330
331 for(smbace = smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace))
332 {
333 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
334 nfs4_ace_int_t *jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2acl) + jfs2acl->aclLength);
335
336 memset(jfs2_ace, 0, entryLen);
337 jfs2_ace->entryLen = entryLen; /* won't store textual "who" */
338 jfs2_ace->aceType = aceprop->aceType; /* only ACCES|DENY supported by jfs2 */
339 jfs2_ace->aceFlags = aceprop->aceFlags;
340 jfs2_ace->aceMask = aceprop->aceMask;
341 jfs2_ace->flags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_ID_SPECIAL : 0;
342
343 /* don't care it's real content is only 16 or 32 bit */
344 jfs2_ace->aceWho.id = aceprop->who.id;
345
346 /* iterate to the next jfs2 ace */
347 jfs2acl->aclLength += jfs2_ace->entryLen;
348 jfs2acl->aclEntryN++;
349 }
350 SMB_ASSERT(jfs2acl->aclEntryN==naces);
351
352 /* Don't query it (again) */
353 memset(&acltype, 0, sizeof(acl_type_t));
354 acltype.u64 = ACL_NFS4;
355
356 /* won't set S_ISUID - the only one JFS2/NFS4 accepts */
357 rc = aclx_put(
358 fsp->fsp_name->base_name,
359 SET_ACL, /* set only the ACL, not mode bits */
360 acltype, /* not a pointer !!! */
361 jfs2acl,
362 jfs2acl->aclLength,
363 0 /* don't set here mode bits */
364 );
365 if (rc) {
366 DEBUG(8, ("aclx_put failed with %s\n", strerror(errno)));
367 return False;
368 }
369
370 DEBUG(10, ("jfs2_process_smbacl succeeded.\n"));
371 return True;
372}
373
374static NTSTATUS aixjfs2_set_nt_acl_common(files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
375{
376 acl_type_t acl_type_info;
377 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
378 int rc;
379
380 rc = aixjfs2_query_acl_support(
381 fsp->fsp_name,
382 ACL_NFS4,
383 &acl_type_info);
384
385 if (rc==0)
386 {
387 result = smb_set_nt_acl_nfs4(
388 fsp, security_info_sent, psd,
389 aixjfs2_process_smbacl);
390 } else if (rc==1) { /* assume POSIX ACL - by default... */
391 result = set_nt_acl(fsp, security_info_sent, psd);
392 } else
393 result = map_nt_error_from_unix(errno); /* query failed */
394
395 return result;
396}
397
398NTSTATUS aixjfs2_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *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 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_str_dbg(fsp)));
450
451 rc = aixjfs2_query_acl_support(fsp->fsp_name->base_name, ACL_AIXC,
452 &acl_type_info);
453 if (rc) {
454 DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
455 return -1;
456 }
457
458 acl_aixc = aixacl_smb_to_aixacl(SMB_ACL_TYPE_ACCESS, theacl);
459 if (!acl_aixc)
460 return -1;
461
462 rc = aclx_fput(
463 fsp->fh->fd,
464 SET_ACL, /* set only the ACL, not mode bits */
465 acl_type_info,
466 acl_aixc,
467 acl_aixc->acl_len,
468 0
469 );
470 if (rc) {
471 DEBUG(2, ("aclx_fput failed with %s for %s\n",
472 strerror(errno), fsp_str_dbg(fsp)));
473 return -1;
474 }
475
476 return 0;
477}
478
479int aixjfs2_sys_acl_delete_def_file(vfs_handle_struct *handle,
480 const char *path)
481{
482 /* Not available under AIXC ACL */
483 /* Don't report here any error otherwise */
484 /* upper layer will break the normal execution */
485 return 0;
486}
487
488static struct vfs_fn_pointers vfs_aixacl2_fns = {
489 .fget_nt_acl = aixjfs2_fget_nt_acl,
490 .get_nt_acl = aixjfs2_get_nt_acl,
491 .fset_nt_acl = aixjfs2_fset_nt_acl,
492 .sys_acl_get_file = aixjfs2_sys_acl_get_file,
493 .sys_acl_get_fd = aixjfs2_sys_acl_get_fd,
494 .sys_acl_set_file = aixjfs2_sys_acl_set_file,
495 .sys_acl_set_fd = aixjfs2_sys_acl_set_fd,
496 .sys_acl_delete_def_file = aixjfs2_sys_acl_delete_def_file
497};
498
499NTSTATUS vfs_aixacl2_init(void);
500NTSTATUS vfs_aixacl2_init(void)
501{
502 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME,
503 &vfs_aixacl2_fns);
504}
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