s3:winbindd:cache: fix offline logons with cached credentials (bug #9321)
[Samba/gebeck_regimport.git] / source3 / modules / vfs_aixacl2.c
blob327b06d66d5d4f303c519f9353693763073fe001
1 /*
2 * Convert JFS2 NFS4/AIXC acls to NT acls and vice versa.
4 * Copyright (C) Volker Lendecke, 2006
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.
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.
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/>.
20 #include "includes.h"
21 #include "system/filesys.h"
22 #include "smbd/smbd.h"
23 #include "nfs4_acls.h"
25 #undef DBGC_CLASS
26 #define DBGC_CLASS DBGC_VFS
28 #define AIXACL2_MODULE_NAME "aixacl2"
30 extern SMB_ACL_T aixacl_to_smbacl( struct acl *file_acl);
31 extern struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
33 typedef union aixjfs2_acl_t {
34 nfs4_acl_int_t jfs2_acl[1];
35 aixc_acl_t aixc_acl[1];
36 }AIXJFS2_ACL_T;
38 static int32_t aixacl2_getlen(AIXJFS2_ACL_T *acl, acl_type_t *type)
40 int32_t len;
42 if(type->u64 == ACL_NFS4) {
43 len = acl->jfs2_acl[0].aclLength;
45 else {
46 if(type->u64 == ACL_AIXC) {
47 len = acl->aixc_acl[0].acl_len;
48 } else {
49 DEBUG(0,("aixacl2_getlen:unknown type:%d\n",type->u64));
50 return False;
53 DEBUG(10,("aixacl2_getlen:%d\n",len));
54 return len;
57 static AIXJFS2_ACL_T *aixjfs2_getacl_alloc(const char *fname, acl_type_t *type)
59 AIXJFS2_ACL_T *acl;
60 size_t len = 200;
61 mode_t mode;
62 int ret;
63 uint64_t ctl_flag=0;
64 TALLOC_CTX *mem_ctx;
66 mem_ctx = talloc_tos();
67 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
68 if (acl == NULL) {
69 errno = ENOMEM;
70 return NULL;
73 if(type->u64 == ACL_ANY) {
74 ctl_flag = ctl_flag | GET_ACLINFO_ONLY;
77 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
78 if ((ret != 0) && (errno == ENOSPC)) {
79 len = aixacl2_getlen(acl, type) + sizeof(AIXJFS2_ACL_T);
80 DEBUG(10,("aixjfs2_getacl_alloc - acl_len:%d\n",len));
82 acl = (AIXJFS2_ACL_T *)TALLOC_SIZE(mem_ctx, len);
83 if (acl == NULL) {
84 errno = ENOMEM;
85 return NULL;
88 ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
90 if (ret != 0) {
91 DEBUG(8, ("aclx_get failed with %s\n", strerror(errno)));
92 return NULL;
95 return acl;
98 static bool aixjfs2_get_nfs4_acl(const char *name,
99 SMB4ACL_T **ppacl, bool *pretryPosix)
101 int32_t i;
103 AIXJFS2_ACL_T *pacl = NULL;
104 nfs4_acl_int_t *jfs2_acl = NULL;
105 nfs4_ace_int_t *jfs2_ace = NULL;
106 acl_type_t type;
108 DEBUG(10,("jfs2 get_nt_acl invoked for %s\n", name));
110 memset(&type, 0, sizeof(acl_type_t));
111 type.u64 = ACL_NFS4;
113 pacl = aixjfs2_getacl_alloc(name, &type);
114 if (pacl == NULL) {
115 DEBUG(9, ("aixjfs2_getacl_alloc failed for %s with %s\n",
116 name, strerror(errno)));
117 if (errno==ENOSYS)
118 *pretryPosix = True;
119 return False;
122 jfs2_acl = &pacl->jfs2_acl[0];
123 DEBUG(10, ("len: %d, version: %d, nace: %d, type: 0x%x\n",
124 jfs2_acl->aclLength, jfs2_acl->aclVersion, jfs2_acl->aclEntryN, type.u64));
126 *ppacl = smb_create_smb4acl();
127 if (*ppacl==NULL)
128 return False;
130 jfs2_ace = &jfs2_acl->aclEntry[0];
131 for (i=0; i<jfs2_acl->aclEntryN; i++) {
132 SMB_ACE4PROP_T aceprop;
134 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
135 "who: %d, aclLen: %d\n", jfs2_ace->aceType, jfs2_ace->flags,
136 jfs2_ace->aceFlags, jfs2_ace->aceMask, jfs2_ace->aceWho.id, jfs2_ace->entryLen));
138 aceprop.aceType = jfs2_ace->aceType;
139 aceprop.aceFlags = jfs2_ace->aceFlags;
140 aceprop.aceMask = jfs2_ace->aceMask;
141 aceprop.flags = (jfs2_ace->flags&ACE4_ID_SPECIAL) ? SMB_ACE4_ID_SPECIAL : 0;
143 /* don't care it's real content is only 16 or 32 bit */
144 aceprop.who.id = jfs2_ace->aceWho.id;
146 if (smb_add_ace4(*ppacl, &aceprop)==NULL)
147 return False;
149 /* iterate to the next jfs2 ace */
150 jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2_ace) + jfs2_ace->entryLen);
153 DEBUG(10,("jfs2 get_nt_acl finished successfully\n"));
155 return True;
158 static NTSTATUS aixjfs2_fget_nt_acl(vfs_handle_struct *handle,
159 files_struct *fsp, uint32 security_info,
160 TALLOC_CTX *mem_ctx,
161 struct security_descriptor **ppdesc)
163 SMB4ACL_T *pacl = NULL;
164 bool result;
165 bool retryPosix = False;
167 *ppdesc = NULL;
168 result = aixjfs2_get_nfs4_acl(fsp->fsp_name->base_name, &pacl,
169 &retryPosix);
170 if (retryPosix)
172 DEBUG(10, ("retrying with posix acl...\n"));
173 return posix_fget_nt_acl(fsp, security_info,
174 mem_ctx, ppdesc);
176 if (result==False)
177 return NT_STATUS_ACCESS_DENIED;
179 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc,
180 mem_ctx, pacl);
183 static NTSTATUS aixjfs2_get_nt_acl(vfs_handle_struct *handle,
184 const char *name,
185 uint32 security_info,
186 TALLOC_CTX *mem_ctx,
187 struct security_descriptor **ppdesc)
189 SMB4ACL_T *pacl = NULL;
190 bool result;
191 bool retryPosix = False;
193 *ppdesc = NULL;
194 result = aixjfs2_get_nfs4_acl(name, &pacl, &retryPosix);
195 if (retryPosix)
197 DEBUG(10, ("retrying with posix acl...\n"));
198 return posix_get_nt_acl(handle->conn, name, security_info,
199 mem_ctx, ppdesc);
201 if (result==False)
202 return NT_STATUS_ACCESS_DENIED;
204 return smb_get_nt_acl_nfs4(handle->conn, name, security_info,
205 mem_ctx, ppdesc,
206 pacl);
209 static int aixjfs2_sys_acl_blob_get_file(vfs_handle_struct *handle, const char *path_p, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob)
211 SMB4ACL_T *pacl = NULL;
212 bool result;
213 bool retryPosix = False;
215 *ppdesc = NULL;
216 result = aixjfs2_get_nfs4_acl(path_p, &pacl, &retryPosix);
217 if (retryPosix)
219 return posix_sys_acl_blob_get_file(handle, path_p, mem_ctx,
220 blob_description, blob);
222 /* Now way to linarlise NFS4 ACLs at the moment, but the NT ACL is pretty close in this case */
223 errno = ENOSYS;
224 return -1;
227 static int aixjfs2_sys_acl_blob_get_fd(vfs_handle_struct *handle, files_struct *fsp, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob)
229 SMB4ACL_T *pacl = NULL;
230 bool result;
231 bool retryPosix = False;
233 result = aixjfs2_get_nfs4_acl(fsp->fsp_name->base_name, &pacl,
234 &retryPosix);
235 if (retryPosix)
237 return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx, blob_description, blob);
240 /* Now way to linarlise NFS4 ACLs at the moment, but the NT ACL is pretty close in this case */
241 errno = ENOSYS;
242 return -1;
245 static SMB_ACL_T aixjfs2_get_posix_acl(const char *path, acl_type_t type, TALLOC_CTX *mem_ctx)
247 aixc_acl_t *pacl;
248 AIXJFS2_ACL_T *acl;
249 SMB_ACL_T result = NULL;
250 int ret;
252 acl = aixjfs2_getacl_alloc(path, &type);
254 if (acl == NULL) {
255 DEBUG(10, ("aixjfs2_getacl failed for %s with %s\n",
256 path, strerror(errno)));
257 if (errno == 0) {
258 errno = EINVAL;
260 goto done;
263 pacl = &acl->aixc_acl[0];
264 DEBUG(10, ("len: %d, mode: %d\n",
265 pacl->acl_len, pacl->acl_mode));
267 result = aixacl_to_smbacl(pacl, mem_ctx);
268 if (result == NULL) {
269 goto done;
272 done:
273 if (errno != 0) {
274 TALLOC_FREE(result);
276 return result;
279 SMB_ACL_T aixjfs2_sys_acl_get_file(vfs_handle_struct *handle,
280 const char *path_p,
281 SMB_ACL_TYPE_T type,
282 TALLOC_CTX *mem_ctx)
284 acl_type_t aixjfs2_type;
286 switch(type) {
287 case SMB_ACL_TYPE_ACCESS:
288 aixjfs2_type.u64 = ACL_AIXC;
289 break;
290 case SMB_ACL_TYPE_DEFAULT:
291 DEBUG(0, ("Got AIX JFS2 unsupported type: %d\n", type));
292 return NULL;
293 default:
294 DEBUG(0, ("Got invalid type: %d\n", type));
295 smb_panic("exiting");
298 return aixjfs2_get_posix_acl(path_p, aixjfs2_type, mem_ctx);
301 SMB_ACL_T aixjfs2_sys_acl_get_fd(vfs_handle_struct *handle,
302 files_struct *fsp)
304 acl_type_t aixjfs2_type;
305 aixjfs2_type.u64 = ACL_AIXC;
307 return aixjfs2_get_posix_acl(fsp->fsp_name->base_name, aixjfs2_type);
311 * Test whether we have that aclType support on the given path
313 static int aixjfs2_query_acl_support(
314 char *filepath,
315 uint64_t aclType,
316 acl_type_t *pacl_type_info
319 acl_types_list_t acl_type_list;
320 size_t acl_type_list_len = sizeof(acl_types_list_t);
321 uint32_t i;
323 memset(&acl_type_list, 0, sizeof(acl_type_list));
325 if (aclx_gettypes(filepath, &acl_type_list, &acl_type_list_len)) {
326 DEBUG(2, ("aclx_gettypes failed with error %s for %s\n",
327 strerror(errno), filepath));
328 return -1;
331 for(i=0; i<acl_type_list.num_entries; i++) {
332 if (acl_type_list.entries[i].u64==aclType) {
333 memcpy(pacl_type_info, acl_type_list.entries + i, sizeof(acl_type_t));
334 DEBUG(10, ("found %s ACL support for %s\n",
335 pacl_type_info->acl_type, filepath));
336 return 0;
340 return 1; /* haven't found that ACL type. */
343 static bool aixjfs2_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
345 SMB4ACE_T *smbace;
346 TALLOC_CTX *mem_ctx;
347 nfs4_acl_int_t *jfs2acl;
348 int32_t entryLen;
349 uint32 aclLen, naces;
350 int rc;
351 acl_type_t acltype;
353 DEBUG(10, ("jfs2_process_smbacl invoked on %s\n", fsp_str_dbg(fsp)));
355 /* no need to be freed which is alloced with mem_ctx */
356 mem_ctx = talloc_tos();
358 entryLen = sizeof(nfs4_ace_int_t);
359 if (entryLen & 0x03)
360 entryLen = entryLen + 4 - (entryLen%4);
362 naces = smb_get_naces(smbacl);
363 aclLen = ACL_V4_SIZ + naces * entryLen;
364 jfs2acl = (nfs4_acl_int_t *)TALLOC_SIZE(mem_ctx, aclLen);
365 if (jfs2acl==NULL) {
366 DEBUG(0, ("TALLOC_SIZE failed\n"));
367 errno = ENOMEM;
368 return False;
371 jfs2acl->aclLength = ACL_V4_SIZ;
372 jfs2acl->aclVersion = NFS4_ACL_INT_STRUCT_VERSION;
373 jfs2acl->aclEntryN = 0;
375 for(smbace = smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace))
377 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
378 nfs4_ace_int_t *jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2acl) + jfs2acl->aclLength);
380 memset(jfs2_ace, 0, entryLen);
381 jfs2_ace->entryLen = entryLen; /* won't store textual "who" */
382 jfs2_ace->aceType = aceprop->aceType; /* only ACCES|DENY supported by jfs2 */
383 jfs2_ace->aceFlags = aceprop->aceFlags;
384 jfs2_ace->aceMask = aceprop->aceMask;
385 jfs2_ace->flags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_ID_SPECIAL : 0;
387 /* don't care it's real content is only 16 or 32 bit */
388 jfs2_ace->aceWho.id = aceprop->who.id;
390 /* iterate to the next jfs2 ace */
391 jfs2acl->aclLength += jfs2_ace->entryLen;
392 jfs2acl->aclEntryN++;
394 SMB_ASSERT(jfs2acl->aclEntryN==naces);
396 /* Don't query it (again) */
397 memset(&acltype, 0, sizeof(acl_type_t));
398 acltype.u64 = ACL_NFS4;
400 /* won't set S_ISUID - the only one JFS2/NFS4 accepts */
401 rc = aclx_put(
402 fsp->fsp_name->base_name,
403 SET_ACL, /* set only the ACL, not mode bits */
404 acltype, /* not a pointer !!! */
405 jfs2acl,
406 jfs2acl->aclLength,
407 0 /* don't set here mode bits */
409 if (rc) {
410 DEBUG(8, ("aclx_put failed with %s\n", strerror(errno)));
411 return False;
414 DEBUG(10, ("jfs2_process_smbacl succeeded.\n"));
415 return True;
418 static NTSTATUS aixjfs2_set_nt_acl_common(files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
420 acl_type_t acl_type_info;
421 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
422 int rc;
424 rc = aixjfs2_query_acl_support(
425 fsp->fsp_name,
426 ACL_NFS4,
427 &acl_type_info);
429 if (rc==0)
431 result = smb_set_nt_acl_nfs4(
432 fsp, security_info_sent, psd,
433 aixjfs2_process_smbacl);
434 } else if (rc==1) { /* assume POSIX ACL - by default... */
435 result = set_nt_acl(fsp, security_info_sent, psd);
436 } else
437 result = map_nt_error_from_unix(errno); /* query failed */
439 return result;
442 NTSTATUS aixjfs2_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
444 return aixjfs2_set_nt_acl_common(fsp, security_info_sent, psd);
447 int aixjfs2_sys_acl_set_file(vfs_handle_struct *handle,
448 const char *name,
449 SMB_ACL_TYPE_T type,
450 SMB_ACL_T theacl)
452 struct acl *acl_aixc;
453 acl_type_t acl_type_info;
454 int rc;
456 DEBUG(10, ("aixjfs2_sys_acl_set_file invoked for %s", name));
458 rc = aixjfs2_query_acl_support((char *)name, ACL_AIXC, &acl_type_info);
459 if (rc) {
460 DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
461 return -1;
464 acl_aixc = aixacl_smb_to_aixacl(type, theacl);
465 if (!acl_aixc)
466 return -1;
468 rc = aclx_put(
469 (char *)name,
470 SET_ACL, /* set only the ACL, not mode bits */
471 acl_type_info,
472 acl_aixc,
473 acl_aixc->acl_len,
476 if (rc) {
477 DEBUG(2, ("aclx_put failed with %s for %s\n",
478 strerror(errno), name));
479 return -1;
482 return 0;
485 int aixjfs2_sys_acl_set_fd(vfs_handle_struct *handle,
486 files_struct *fsp,
487 SMB_ACL_T theacl)
489 struct acl *acl_aixc;
490 acl_type_t acl_type_info;
491 int rc;
493 DEBUG(10, ("aixjfs2_sys_acl_set_fd invoked for %s", fsp_str_dbg(fsp)));
495 rc = aixjfs2_query_acl_support(fsp->fsp_name->base_name, ACL_AIXC,
496 &acl_type_info);
497 if (rc) {
498 DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
499 return -1;
502 acl_aixc = aixacl_smb_to_aixacl(SMB_ACL_TYPE_ACCESS, theacl);
503 if (!acl_aixc)
504 return -1;
506 rc = aclx_fput(
507 fsp->fh->fd,
508 SET_ACL, /* set only the ACL, not mode bits */
509 acl_type_info,
510 acl_aixc,
511 acl_aixc->acl_len,
514 if (rc) {
515 DEBUG(2, ("aclx_fput failed with %s for %s\n",
516 strerror(errno), fsp_str_dbg(fsp)));
517 return -1;
520 return 0;
523 int aixjfs2_sys_acl_delete_def_file(vfs_handle_struct *handle,
524 const char *path)
526 /* Not available under AIXC ACL */
527 /* Don't report here any error otherwise */
528 /* upper layer will break the normal execution */
529 return 0;
532 static struct vfs_fn_pointers vfs_aixacl2_fns = {
533 .fget_nt_acl_fn = aixjfs2_fget_nt_acl,
534 .get_nt_acl_fn = aixjfs2_get_nt_acl,
535 .fset_nt_acl_fn = aixjfs2_fset_nt_acl,
536 .sys_acl_get_file_fn = aixjfs2_sys_acl_get_file,
537 .sys_acl_get_fd_fn = aixjfs2_sys_acl_get_fd,
538 .sys_acl_blob_get_file_fn = aixjfs2_sys_acl_blob_get_file,
539 .sys_acl_blob_get_fd_fn = aixjfs2_sys_acl_blob_get_fd,
540 .sys_acl_set_file_fn = aixjfs2_sys_acl_set_file,
541 .sys_acl_set_fd_fn = aixjfs2_sys_acl_set_fd,
542 .sys_acl_delete_def_file_fn = aixjfs2_sys_acl_delete_def_file
545 NTSTATUS vfs_aixacl2_init(void);
546 NTSTATUS vfs_aixacl2_init(void)
548 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME,
549 &vfs_aixacl2_fns);