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} 539