1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 1988 AT&T 24 * All Rights Reserved 25 * 26 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 /* 31 * Processing of relocatable objects and shared objects. 32 */ 33 34 #define ELF_TARGET_AMD64 35 #define ELF_TARGET_SPARC 36 37 #include <stdio.h> 38 #include <string.h> 39 #include <fcntl.h> 40 #include <unistd.h> 41 #include <link.h> 42 #include <limits.h> 43 #include <sys/stat.h> 44 #include <sys/systeminfo.h> 45 #include <debug.h> 46 #include <msg.h> 47 #include <_libld.h> 48 49 /* 50 * Decide if we can link against this input file. 51 */ 52 static int 53 ifl_verify(Ehdr *ehdr, Ofl_desc *ofl, Rej_desc *rej) 54 { 55 /* 56 * Check the validity of the elf header information for compatibility 57 * with this machine and our own internal elf library. 58 */ 59 if ((ehdr->e_machine != ld_targ.t_m.m_mach) && 60 ((ehdr->e_machine != ld_targ.t_m.m_machplus) && 61 ((ehdr->e_flags & ld_targ.t_m.m_flagsplus) == 0))) { 62 rej->rej_type = SGS_REJ_MACH; 63 rej->rej_info = (uint_t)ehdr->e_machine; 64 return (0); 65 } 66 if (ehdr->e_ident[EI_DATA] != ld_targ.t_m.m_data) { 67 rej->rej_type = SGS_REJ_DATA; 68 rej->rej_info = (uint_t)ehdr->e_ident[EI_DATA]; 69 return (0); 70 } 71 if (ehdr->e_version > ofl->ofl_dehdr->e_version) { 72 rej->rej_type = SGS_REJ_VERSION; 73 rej->rej_info = (uint_t)ehdr->e_version; 74 return (0); 75 } 76 return (1); 77 } 78 79 /* 80 * Check sanity of file header and allocate an infile descriptor 81 * for the file being processed. 82 */ 83 static Ifl_desc * 84 ifl_setup(const char *name, Ehdr *ehdr, Elf *elf, Word flags, Ofl_desc *ofl, 85 Rej_desc *rej) 86 { 87 Ifl_desc *ifl; 88 List *list; 89 Rej_desc _rej = { 0 }; 90 91 if (ifl_verify(ehdr, ofl, &_rej) == 0) { 92 _rej.rej_name = name; 93 DBG_CALL(Dbg_file_rejected(ofl->ofl_lml, &_rej, 94 ld_targ.t_m.m_mach)); 95 if (rej->rej_type == 0) { 96 *rej = _rej; 97 rej->rej_name = strdup(_rej.rej_name); 98 } 99 return (0); 100 } 101 102 if ((ifl = libld_calloc(1, sizeof (Ifl_desc))) == 0) 103 return ((Ifl_desc *)S_ERROR); 104 ifl->ifl_name = name; 105 ifl->ifl_ehdr = ehdr; 106 ifl->ifl_elf = elf; 107 ifl->ifl_flags = flags; 108 109 /* 110 * Is this file using 'extended Section Indexes'. If so, use the 111 * e_shnum & e_shstrndx which can be found at: 112 * 113 * e_shnum == Shdr[0].sh_size 114 * e_shstrndx == Shdr[0].sh_link 115 */ 116 if ((ehdr->e_shnum == 0) && (ehdr->e_shoff != 0)) { 117 Elf_Scn *scn; 118 Shdr *shdr0; 119 120 if ((scn = elf_getscn(elf, 0)) == NULL) { 121 eprintf(ofl->ofl_lml, ERR_ELF, 122 MSG_INTL(MSG_ELF_GETSCN), name); 123 ofl->ofl_flags |= FLG_OF_FATAL; 124 return ((Ifl_desc *)S_ERROR); 125 } 126 if ((shdr0 = elf_getshdr(scn)) == NULL) { 127 eprintf(ofl->ofl_lml, ERR_ELF, 128 MSG_INTL(MSG_ELF_GETSHDR), name); 129 ofl->ofl_flags |= FLG_OF_FATAL; 130 return ((Ifl_desc *)S_ERROR); 131 } 132 ifl->ifl_shnum = (Word)shdr0->sh_size; 133 if (ehdr->e_shstrndx == SHN_XINDEX) 134 ifl->ifl_shstrndx = shdr0->sh_link; 135 else 136 ifl->ifl_shstrndx = ehdr->e_shstrndx; 137 } else { 138 ifl->ifl_shnum = ehdr->e_shnum; 139 ifl->ifl_shstrndx = ehdr->e_shstrndx; 140 } 141 142 if ((ifl->ifl_isdesc = libld_calloc(ifl->ifl_shnum, 143 sizeof (Is_desc *))) == 0) 144 return ((Ifl_desc *)S_ERROR); 145 146 /* 147 * Record this new input file on the shared object or relocatable 148 * object input file list. 149 */ 150 if (ifl->ifl_ehdr->e_type == ET_DYN) { 151 list = &ofl->ofl_sos; 152 } else { 153 list = &ofl->ofl_objs; 154 } 155 156 if (list_appendc(list, ifl) == 0) 157 return ((Ifl_desc *)S_ERROR); 158 return (ifl); 159 } 160 161 /* 162 * Process a generic section. The appropriate section information is added 163 * to the files input descriptor list. 164 */ 165 static uintptr_t 166 process_section(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 167 Word ndx, int ident, Ofl_desc *ofl) 168 { 169 Is_desc *isp; 170 171 /* 172 * Create a new input section descriptor. If this is a NOBITS 173 * section elf_getdata() will still create a data buffer (the buffer 174 * will be null and the size will reflect the actual memory size). 175 */ 176 if ((isp = libld_calloc(sizeof (Is_desc), 1)) == 0) 177 return (S_ERROR); 178 isp->is_shdr = shdr; 179 isp->is_file = ifl; 180 isp->is_name = name; 181 isp->is_scnndx = ndx; 182 isp->is_flags = FLG_IS_EXTERNAL; 183 isp->is_keyident = ident; 184 185 if ((isp->is_indata = elf_getdata(scn, NULL)) == NULL) { 186 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_GETDATA), 187 ifl->ifl_name); 188 ofl->ofl_flags |= FLG_OF_FATAL; 189 return (0); 190 } 191 192 if ((shdr->sh_flags & SHF_EXCLUDE) && 193 ((ofl->ofl_flags & FLG_OF_RELOBJ) == 0)) { 194 isp->is_flags |= FLG_IS_DISCARD; 195 } 196 197 /* 198 * Add the new input section to the files input section list and 199 * flag whether the section needs placing in an output section. This 200 * placement is deferred until all input section processing has been 201 * completed, as SHT_GROUP sections can provide information that will 202 * affect how other sections within the file should be placed. 203 */ 204 ifl->ifl_isdesc[ndx] = isp; 205 206 if (ident) { 207 if (shdr->sh_flags & ALL_SHF_ORDER) { 208 isp->is_flags |= FLG_IS_ORDERED; 209 ifl->ifl_flags |= FLG_IF_ORDERED; 210 } 211 isp->is_flags |= FLG_IS_PLACE; 212 } 213 return (1); 214 } 215 216 /* 217 * Determine the software capabilities of the object being built from the 218 * capabilities of the input relocatable objects. One software capability 219 * is presently recognized, and represented with the following (sys/elf.h): 220 * 221 * SF1_SUNW_FPKNWN use/non-use of frame pointer is known, and 222 * SF1_SUNW_FPUSED the frame pointer is in use. 223 * 224 * The resolution of the present fame pointer state, and the capabilities 225 * provided by a new input relocatable object are: 226 * 227 * new input relocatable object 228 * 229 * present | SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN | <unknown> 230 * state | SF1_SUNW_FPUSED | | 231 * --------------------------------------------------------------------------- 232 * SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN 233 * SF1_SUNW_FPUSED | SF1_SUNW_FPUSED | | SF1_SUNW_FPUSED 234 * --------------------------------------------------------------------------- 235 * SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN 236 * | | | 237 * --------------------------------------------------------------------------- 238 * <unknown> | SF1_SUNW_FPKNWN | SF1_SUNW_FPKNWN | <unknown> 239 * | SF1_SUNW_FPUSED | | 240 */ 241 static void 242 sf1_cap(Ofl_desc *ofl, Xword val, Ifl_desc *ifl, const char *name) 243 { 244 Xword badval; 245 246 /* 247 * If a mapfile has established definitions to override any input 248 * capabilities, ignore any new input capabilities. 249 */ 250 if (ofl->ofl_flags1 & FLG_OF1_OVSFCAP) { 251 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_IGNORE, CA_SUNW_SF_1, 252 val, ld_targ.t_m.m_mach); 253 return; 254 } 255 256 #if !defined(_ELF64) 257 if (ifl->ifl_ehdr->e_type == ET_REL) { 258 /* 259 * The SF1_SUNW_ADDR32 is only meaningful when building a 64-bit 260 * object. Warn the user, and remove the setting, if we're 261 * building a 32-bit object. 262 */ 263 if (val & SF1_SUNW_ADDR32) { 264 eprintf(ofl->ofl_lml, ERR_WARNING, 265 MSG_INTL(MSG_FIL_INADDR32SF1), ifl->ifl_name, name); 266 val &= ~SF1_SUNW_ADDR32; 267 } 268 } 269 #endif 270 /* 271 * If this object doesn't specify any capabilities, ignore it, and 272 * leave the state as is. 273 */ 274 if (val == 0) 275 return; 276 277 /* 278 * Make sure we only accept known software capabilities. Note, that 279 * an F1_SUNW_FPUSED by itself is viewed as bad practice. 280 */ 281 if ((badval = (val & ~SF1_SUNW_MASK)) != 0) { 282 eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_FIL_BADSF1), 283 ifl->ifl_name, name, EC_XWORD(badval)); 284 val &= SF1_SUNW_MASK; 285 } 286 if ((val & (SF1_SUNW_FPKNWN | SF1_SUNW_FPUSED)) == SF1_SUNW_FPUSED) { 287 eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_FIL_BADSF1), 288 ifl->ifl_name, name, EC_XWORD(val)); 289 return; 290 } 291 292 /* 293 * If the input file is not a relocatable object, then we're only here 294 * to warn the user of any questionable capabilities. 295 */ 296 if (ifl->ifl_ehdr->e_type != ET_REL) { 297 #if defined(_ELF64) 298 /* 299 * If we're building a 64-bit executable, and we come across a 300 * dependency that requires a restricted address space, then 301 * that dependencies requirement can only be satisfied if the 302 * executable triggers the restricted address space. This is a 303 * warning rather than a fatal error, as the possibility exists 304 * that an appropriate dependency will be provided at runtime. 305 * The runtime linker will refuse to use this dependency. 306 */ 307 if ((val & SF1_SUNW_ADDR32) && (ofl->ofl_flags & FLG_OF_EXEC) && 308 ((ofl->ofl_sfcap_1 & SF1_SUNW_ADDR32) == 0)) { 309 eprintf(ofl->ofl_lml, ERR_WARNING, 310 MSG_INTL(MSG_FIL_EXADDR32SF1), ifl->ifl_name, name); 311 } 312 #endif 313 return; 314 } 315 316 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_OLD, CA_SUNW_SF_1, 317 ofl->ofl_sfcap_1, ld_targ.t_m.m_mach); 318 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_NEW, CA_SUNW_SF_1, 319 val, ld_targ.t_m.m_mach); 320 321 /* 322 * Determine the resolution of the present frame pointer and the 323 * new input relocatable objects frame pointer. 324 */ 325 if ((ofl->ofl_sfcap_1 & (SF1_SUNW_FPKNWN | SF1_SUNW_FPUSED)) == 326 (SF1_SUNW_FPKNWN | SF1_SUNW_FPUSED)) { 327 /* 328 * If the new relocatable object isn't using a frame pointer, 329 * reduce the present state to unused. 330 */ 331 if ((val & (SF1_SUNW_FPKNWN | SF1_SUNW_FPUSED)) != 332 (SF1_SUNW_FPKNWN | SF1_SUNW_FPUSED)) 333 ofl->ofl_sfcap_1 &= ~SF1_SUNW_FPUSED; 334 335 } else if ((ofl->ofl_sfcap_1 & SF1_SUNW_FPKNWN) == 0) { 336 /* 337 * If the present state is unknown, take the new relocatable 338 * object frame pointer usage. 339 */ 340 ofl->ofl_sfcap_1 = val; 341 } 342 343 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_RESOLVED, CA_SUNW_SF_1, 344 ofl->ofl_sfcap_1, ld_targ.t_m.m_mach); 345 } 346 347 /* 348 * Determine the hardware capabilities of the object being built from the 349 * capabilities of the input relocatable objects. There's really little to 350 * do here, other than to offer diagnostics, hardware capabilities are simply 351 * additive. 352 */ 353 static void 354 hw1_cap(Ofl_desc *ofl, Xword val) 355 { 356 /* 357 * If a mapfile has established definitions to override any input 358 * capabilities, ignore any new input capabilities. 359 */ 360 if (ofl->ofl_flags1 & FLG_OF1_OVHWCAP) { 361 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_IGNORE, CA_SUNW_HW_1, 362 val, ld_targ.t_m.m_mach); 363 return; 364 } 365 366 /* 367 * If this object doesn't specify any capabilities, ignore it, and 368 * leave the state as is. 369 */ 370 if (val == 0) 371 return; 372 373 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_OLD, CA_SUNW_HW_1, 374 ofl->ofl_hwcap_1, ld_targ.t_m.m_mach); 375 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_NEW, CA_SUNW_HW_1, val, 376 ld_targ.t_m.m_mach); 377 378 ofl->ofl_hwcap_1 |= val; 379 380 Dbg_cap_sec_entry(ofl->ofl_lml, DBG_CAP_RESOLVED, CA_SUNW_HW_1, 381 ofl->ofl_hwcap_1, ld_targ.t_m.m_mach); 382 } 383 384 /* 385 * Process a hardware/software capabilities section. Traverse the section 386 * updating the global capabilities variables as necessary. 387 */ 388 static void 389 process_cap(Ifl_desc *ifl, Is_desc *cisp, Ofl_desc *ofl) 390 { 391 Cap *cdata; 392 Word ndx, cnum; 393 394 DBG_CALL(Dbg_cap_sec_title(ofl->ofl_lml, ifl->ifl_name)); 395 396 /* 397 * The capabilities are supposed to be terminated with a CA_SUNW_NULL 398 * entry. However, the compilers have been known to not follow this 399 * convention. Use the section information to determine the number 400 * of capabilities, and skip any CA_SUNW_NULL entries. 401 */ 402 cdata = (Cap *)cisp->is_indata->d_buf; 403 cnum = (Word)(cisp->is_shdr->sh_size / cisp->is_shdr->sh_entsize); 404 405 for (ndx = 0; ndx < cnum; cdata++, ndx++) { 406 switch (cdata->c_tag) { 407 case CA_SUNW_HW_1: 408 /* 409 * Only the hardware capabilities that are 410 * defined in a relocatable object become part 411 * of the hardware capabilities in the output 412 * file. 413 */ 414 if (ifl->ifl_ehdr->e_type == ET_REL) 415 hw1_cap(ofl, cdata->c_un.c_val); 416 break; 417 case CA_SUNW_SF_1: 418 /* 419 * Only the software capabilities that are 420 * defined in a relocatable object become part 421 * of the software capabilities in the output 422 * file. However, check the validity of the 423 * software capabilities of any dependencies. 424 */ 425 sf1_cap(ofl, cdata->c_un.c_val, ifl, 426 cisp->is_name); 427 break; 428 case CA_SUNW_NULL: 429 break; 430 default: 431 eprintf(ofl->ofl_lml, ERR_WARNING, 432 MSG_INTL(MSG_FIL_UNKCAP), 433 ifl->ifl_name, cisp->is_name, cdata->c_tag); 434 } 435 } 436 } 437 438 /* 439 * Simply process the section so that we have pointers to the data for use 440 * in later routines, however don't add the section to the output section 441 * list as we will be creating our own replacement sections later (ie. 442 * symtab and relocation). 443 */ 444 static uintptr_t 445 /* ARGSUSED5 */ 446 process_input(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 447 Word ndx, int ident, Ofl_desc *ofl) 448 { 449 return (process_section(name, ifl, shdr, scn, ndx, 450 ld_targ.t_id.id_null, ofl)); 451 } 452 453 /* 454 * Keep a running count of relocation entries from input relocatable objects for 455 * sizing relocation buckets later. If we're building an executable, save any 456 * relocations from shared objects to determine if any copy relocation symbol 457 * has a displacement relocation against it. 458 */ 459 static uintptr_t 460 /* ARGSUSED5 */ 461 process_reloc(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 462 Word ndx, int ident, Ofl_desc *ofl) 463 { 464 if (process_section(name, ifl, 465 shdr, scn, ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 466 return (S_ERROR); 467 468 if (ifl->ifl_ehdr->e_type == ET_REL) { 469 if (shdr->sh_entsize && (shdr->sh_entsize <= shdr->sh_size)) 470 /* LINTED */ 471 ofl->ofl_relocincnt += 472 (Word)(shdr->sh_size / shdr->sh_entsize); 473 } else if (ofl->ofl_flags & FLG_OF_EXEC) { 474 if (list_appendc(&ifl->ifl_relsect, ifl->ifl_isdesc[ndx]) == 0) 475 return (S_ERROR); 476 } 477 return (1); 478 } 479 480 481 /* 482 * Process a string table section. A valid section contains an initial and 483 * final null byte. 484 */ 485 static uintptr_t 486 process_strtab(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 487 Word ndx, int ident, Ofl_desc *ofl) 488 { 489 char *data; 490 size_t size; 491 Is_desc *isp; 492 uintptr_t error; 493 494 /* 495 * Never include .stab.excl sections in any output file. 496 * If the -s flag has been specified strip any .stab sections. 497 */ 498 if (((ofl->ofl_flags & FLG_OF_STRIP) && ident && 499 (strncmp(name, MSG_ORIG(MSG_SCN_STAB), MSG_SCN_STAB_SIZE) == 0)) || 500 (strcmp(name, MSG_ORIG(MSG_SCN_STABEXCL)) == 0) && ident) 501 return (1); 502 503 /* 504 * If we got here to process a .shstrtab or .dynstr table, `ident' will 505 * be null. Otherwise make sure we don't have a .strtab section as this 506 * should not be added to the output section list either. 507 */ 508 if ((ident != ld_targ.t_id.id_null) && 509 (strcmp(name, MSG_ORIG(MSG_SCN_STRTAB)) == 0)) 510 ident = ld_targ.t_id.id_null; 511 512 error = process_section(name, ifl, shdr, scn, ndx, ident, ofl); 513 if ((error == 0) || (error == S_ERROR)) 514 return (error); 515 516 /* 517 * String tables should start and end with a NULL byte. Note, it has 518 * been known for the assembler to create empty string tables, so check 519 * the size before attempting to verify the data itself. 520 */ 521 isp = ifl->ifl_isdesc[ndx]; 522 size = isp->is_indata->d_size; 523 if (size) { 524 data = isp->is_indata->d_buf; 525 if (data[0] != '\0' || data[size - 1] != '\0') 526 eprintf(ofl->ofl_lml, ERR_WARNING, 527 MSG_INTL(MSG_FIL_MALSTR), ifl->ifl_name, name); 528 } else 529 isp->is_indata->d_buf = (void *)MSG_ORIG(MSG_STR_EMPTY); 530 531 ifl->ifl_flags |= FLG_IF_HSTRTAB; 532 return (1); 533 } 534 535 /* 536 * Invalid sections produce a warning and are skipped. 537 */ 538 static uintptr_t 539 /* ARGSUSED3 */ 540 invalid_section(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 541 Word ndx, int ident, Ofl_desc *ofl) 542 { 543 Conv_inv_buf_t inv_buf; 544 545 eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_FIL_INVALSEC), 546 ifl->ifl_name, name, conv_sec_type(ifl->ifl_ehdr->e_machine, 547 shdr->sh_type, 0, &inv_buf)); 548 return (1); 549 } 550 551 /* 552 * Process a progbits section. 553 */ 554 static uintptr_t 555 process_progbits(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 556 Word ndx, int ident, Ofl_desc *ofl) 557 { 558 int stab_index = 0; 559 560 /* 561 * Never include .stab.excl sections in any output file. 562 * If the -s flag has been specified strip any .stab sections. 563 */ 564 if (ident && (strncmp(name, MSG_ORIG(MSG_SCN_STAB), 565 MSG_SCN_STAB_SIZE) == 0)) { 566 if ((ofl->ofl_flags & FLG_OF_STRIP) || 567 (strcmp((name + MSG_SCN_STAB_SIZE), 568 MSG_ORIG(MSG_SCN_EXCL)) == 0)) 569 return (1); 570 571 if (strcmp((name + MSG_SCN_STAB_SIZE), 572 MSG_ORIG(MSG_SCN_INDEX)) == 0) 573 stab_index = 1; 574 } 575 576 if ((ofl->ofl_flags & FLG_OF_STRIP) && ident) { 577 if ((strncmp(name, MSG_ORIG(MSG_SCN_DEBUG), 578 MSG_SCN_DEBUG_SIZE) == 0) || 579 (strcmp(name, MSG_ORIG(MSG_SCN_LINE)) == 0)) 580 return (1); 581 } 582 583 /* 584 * Update the ident to reflect the type of section we've got. 585 * 586 * If there is any .plt or .got section to generate we'll be creating 587 * our own version, so don't allow any input sections of these types to 588 * be added to the output section list (why a relocatable object would 589 * have a .plt or .got is a mystery, but stranger things have occurred). 590 */ 591 if (ident) { 592 if (shdr->sh_flags & SHF_TLS) 593 ident = ld_targ.t_id.id_tls; 594 else if ((shdr->sh_flags & ~ALL_SHF_IGNORE) == 595 (SHF_ALLOC | SHF_EXECINSTR)) 596 ident = ld_targ.t_id.id_text; 597 else if (shdr->sh_flags & SHF_ALLOC) { 598 if ((strcmp(name, MSG_ORIG(MSG_SCN_PLT)) == 0) || 599 (strcmp(name, MSG_ORIG(MSG_SCN_GOT)) == 0)) 600 ident = ld_targ.t_id.id_null; 601 else if (stab_index) { 602 /* 603 * This is a work-around for x86 compilers that 604 * have set SHF_ALLOC for the .stab.index 605 * section. 606 * 607 * Because of this, make sure that the 608 * .stab.index does not end up as the last 609 * section in the text segment. Older linkers 610 * can produce segmentation violations when they 611 * strip (ld -s) against a shared object whose 612 * last section in the text segment is a .stab. 613 */ 614 ident = ld_targ.t_id.id_interp; 615 } else 616 ident = ld_targ.t_id.id_data; 617 } else 618 ident = ld_targ.t_id.id_note; 619 } 620 return (process_section(name, ifl, shdr, scn, ndx, ident, ofl)); 621 } 622 623 /* 624 * Handles the SHT_SUNW_{DEBUG,DEBUGSTR) sections. 625 */ 626 static uintptr_t 627 process_debug(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 628 Word ndx, int ident, Ofl_desc *ofl) 629 { 630 /* 631 * Debug information is discarded when the 'ld -s' flag is invoked. 632 */ 633 if (ofl->ofl_flags & FLG_OF_STRIP) { 634 return (1); 635 } 636 return (process_progbits(name, ifl, shdr, scn, ndx, ident, ofl)); 637 } 638 639 /* 640 * Process a nobits section. 641 */ 642 static uintptr_t 643 process_nobits(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 644 Word ndx, int ident, Ofl_desc *ofl) 645 { 646 if (ident) { 647 if (shdr->sh_flags & SHF_TLS) 648 ident = ld_targ.t_id.id_tlsbss; 649 #if defined(_ELF64) 650 else if ((shdr->sh_flags & SHF_AMD64_LARGE) && 651 (ld_targ.t_m.m_mach == EM_AMD64)) 652 ident = ld_targ.t_id.id_lbss; 653 #endif 654 else 655 ident = ld_targ.t_id.id_bss; 656 } 657 return (process_section(name, ifl, shdr, scn, ndx, ident, ofl)); 658 } 659 660 /* 661 * Process a SHT_*_ARRAY section. 662 */ 663 static uintptr_t 664 process_array(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 665 Word ndx, int ident, Ofl_desc *ofl) 666 { 667 uintptr_t error; 668 669 if (ident) 670 ident = ld_targ.t_id.id_array; 671 672 error = process_section(name, ifl, shdr, scn, ndx, ident, ofl); 673 if ((error == 0) || (error == S_ERROR)) 674 return (error); 675 676 return (1); 677 } 678 679 static uintptr_t 680 /* ARGSUSED1 */ 681 array_process(Is_desc *isc, Ifl_desc *ifl, Ofl_desc *ofl) 682 { 683 Os_desc *osp; 684 Shdr *shdr; 685 686 if ((isc == NULL) || ((osp = isc->is_osdesc) == NULL)) 687 return (0); 688 689 shdr = isc->is_shdr; 690 691 if ((shdr->sh_type == SHT_FINI_ARRAY) && 692 (ofl->ofl_osfiniarray == NULL)) 693 ofl->ofl_osfiniarray = osp; 694 else if ((shdr->sh_type == SHT_INIT_ARRAY) && 695 (ofl->ofl_osinitarray == NULL)) 696 ofl->ofl_osinitarray = osp; 697 else if ((shdr->sh_type == SHT_PREINIT_ARRAY) && 698 (ofl->ofl_ospreinitarray == NULL)) 699 ofl->ofl_ospreinitarray = osp; 700 701 return (1); 702 } 703 704 /* 705 * Process a SHT_SYMTAB_SHNDX section. 706 */ 707 static uintptr_t 708 process_sym_shndx(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 709 Word ndx, int ident, Ofl_desc *ofl) 710 { 711 if (process_input(name, ifl, shdr, scn, ndx, ident, ofl) == S_ERROR) 712 return (S_ERROR); 713 714 /* 715 * Have we already seen the related SYMTAB - if so verify it now. 716 */ 717 if (shdr->sh_link < ndx) { 718 Is_desc *isp = ifl->ifl_isdesc[shdr->sh_link]; 719 720 if ((isp == 0) || ((isp->is_shdr->sh_type != SHT_SYMTAB) && 721 (isp->is_shdr->sh_type != SHT_DYNSYM))) { 722 eprintf(ofl->ofl_lml, ERR_FATAL, 723 MSG_INTL(MSG_FIL_INVSHLINK), ifl->ifl_name, name, 724 EC_XWORD(shdr->sh_link)); 725 return (S_ERROR); 726 } 727 isp->is_symshndx = ifl->ifl_isdesc[ndx]; 728 } 729 return (1); 730 } 731 732 /* 733 * Final processing for SHT_SYMTAB_SHNDX section. 734 */ 735 static uintptr_t 736 /* ARGSUSED2 */ 737 sym_shndx_process(Is_desc *isc, Ifl_desc *ifl, Ofl_desc *ofl) 738 { 739 if (isc->is_shdr->sh_link > isc->is_scnndx) { 740 Is_desc *isp = ifl->ifl_isdesc[isc->is_shdr->sh_link]; 741 742 if ((isp == 0) || ((isp->is_shdr->sh_type != SHT_SYMTAB) && 743 (isp->is_shdr->sh_type != SHT_DYNSYM))) { 744 eprintf(ofl->ofl_lml, ERR_FATAL, 745 MSG_INTL(MSG_FIL_INVSHLINK), isc->is_file->ifl_name, 746 isc->is_name, EC_XWORD(isc->is_shdr->sh_link)); 747 return (S_ERROR); 748 } 749 isp->is_symshndx = isc; 750 } 751 return (1); 752 } 753 754 /* 755 * Process .dynamic section from a relocatable object. 756 * 757 * Note: That the .dynamic section is only considered interesting when 758 * dlopen()ing a relocatable object (thus FLG_OF1_RELDYN can only get 759 * set when libld is called from ld.so.1). 760 */ 761 /*ARGSUSED*/ 762 static uintptr_t 763 process_rel_dynamic(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 764 Word ndx, int ident, Ofl_desc *ofl) 765 { 766 Dyn *dyn; 767 Elf_Scn *strscn; 768 Elf_Data *dp; 769 char *str; 770 771 /* 772 * Process .dynamic sections from relocatable objects ? 773 */ 774 if ((ofl->ofl_flags1 & FLG_OF1_RELDYN) == 0) 775 return (1); 776 777 /* 778 * Find the string section associated with the .dynamic section. 779 */ 780 if ((strscn = elf_getscn(ifl->ifl_elf, shdr->sh_link)) == NULL) { 781 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_GETSCN), 782 ifl->ifl_name); 783 ofl->ofl_flags |= FLG_OF_FATAL; 784 return (0); 785 } 786 dp = elf_getdata(strscn, NULL); 787 str = (char *)dp->d_buf; 788 789 /* 790 * And get the .dynamic data 791 */ 792 dp = elf_getdata(scn, NULL); 793 794 for (dyn = (Dyn *)dp->d_buf; dyn->d_tag != DT_NULL; dyn++) { 795 Ifl_desc *difl; 796 797 switch (dyn->d_tag) { 798 case DT_NEEDED: 799 case DT_USED: 800 if (((difl = 801 libld_calloc(1, sizeof (Ifl_desc))) == 0) || 802 (list_appendc(&ofl->ofl_sos, difl) == 0)) 803 return (S_ERROR); 804 805 difl->ifl_name = MSG_ORIG(MSG_STR_DYNAMIC); 806 difl->ifl_soname = str + (size_t)dyn->d_un.d_val; 807 difl->ifl_flags = FLG_IF_NEEDSTR; 808 break; 809 case DT_RPATH: 810 case DT_RUNPATH: 811 if ((ofl->ofl_rpath = add_string(ofl->ofl_rpath, 812 (str + (size_t)dyn->d_un.d_val))) == 813 (const char *)S_ERROR) 814 return (S_ERROR); 815 break; 816 case DT_VERSYM: 817 /* 818 * The Solaris ld does not put DT_VERSYM in the 819 * dynamic section. If the object has DT_VERSYM, 820 * then it must have been produced by the GNU ld, 821 * and is using the GNU style of versioning. 822 */ 823 ifl->ifl_flags |= FLG_IF_GNUVER; 824 break; 825 } 826 } 827 return (1); 828 } 829 830 /* 831 * Expand implicit references. Dependencies can be specified in terms of the 832 * $ORIGIN, $PLATFORM, $OSREL and $OSNAME tokens, either from their needed name, 833 * or via a runpath. In addition runpaths may also specify the $ISALIST token. 834 * 835 * Probably the most common reference to explicit dependencies (via -L) will be 836 * sufficient to find any associated implicit dependencies, but just in case we 837 * expand any occurrence of these known tokens here. 838 * 839 * Note, if any errors occur we simply return the original name. 840 * 841 * This code is remarkably similar to expand() in rtld/common/paths.c. 842 */ 843 static char *platform = 0; 844 static size_t platform_sz = 0; 845 static Isa_desc *isa = 0; 846 static Uts_desc *uts = 0; 847 848 static char * 849 expand(const char *parent, const char *name, char **next) 850 { 851 char _name[PATH_MAX], *nptr, *_next; 852 const char *optr; 853 size_t nrem = PATH_MAX - 1; 854 int expanded = 0, _expanded, isaflag = 0; 855 856 optr = name; 857 nptr = _name; 858 859 while (*optr) { 860 if (nrem == 0) 861 return ((char *)name); 862 863 if (*optr != '$') { 864 *nptr++ = *optr++, nrem--; 865 continue; 866 } 867 868 _expanded = 0; 869 870 if (strncmp(optr, MSG_ORIG(MSG_STR_ORIGIN), 871 MSG_STR_ORIGIN_SIZE) == 0) { 872 char *eptr; 873 874 /* 875 * For $ORIGIN, expansion is really just a concatenation 876 * of the parents directory name. For example, an 877 * explicit dependency foo/bar/lib1.so with a dependency 878 * on $ORIGIN/lib2.so would be expanded to 879 * foo/bar/lib2.so. 880 */ 881 if ((eptr = strrchr(parent, '/')) == 0) { 882 *nptr++ = '.'; 883 nrem--; 884 } else { 885 size_t len = eptr - parent; 886 887 if (len >= nrem) 888 return ((char *)name); 889 890 (void) strncpy(nptr, parent, len); 891 nptr = nptr + len; 892 nrem -= len; 893 } 894 optr += MSG_STR_ORIGIN_SIZE; 895 expanded = _expanded = 1; 896 897 } else if (strncmp(optr, MSG_ORIG(MSG_STR_PLATFORM), 898 MSG_STR_PLATFORM_SIZE) == 0) { 899 /* 900 * Establish the platform from sysconf - like uname -i. 901 */ 902 if ((platform == 0) && (platform_sz == 0)) { 903 char info[SYS_NMLN]; 904 long size; 905 906 size = sysinfo(SI_PLATFORM, info, SYS_NMLN); 907 if ((size != -1) && 908 (platform = libld_malloc((size_t)size))) { 909 (void) strcpy(platform, info); 910 platform_sz = (size_t)size - 1; 911 } else 912 platform_sz = 1; 913 } 914 if (platform != 0) { 915 if (platform_sz >= nrem) 916 return ((char *)name); 917 918 (void) strncpy(nptr, platform, platform_sz); 919 nptr = nptr + platform_sz; 920 nrem -= platform_sz; 921 922 optr += MSG_STR_PLATFORM_SIZE; 923 expanded = _expanded = 1; 924 } 925 926 } else if (strncmp(optr, MSG_ORIG(MSG_STR_OSNAME), 927 MSG_STR_OSNAME_SIZE) == 0) { 928 /* 929 * Establish the os name - like uname -s. 930 */ 931 if (uts == 0) 932 uts = conv_uts(); 933 934 if (uts && uts->uts_osnamesz) { 935 if (uts->uts_osnamesz >= nrem) 936 return ((char *)name); 937 938 (void) strncpy(nptr, uts->uts_osname, 939 uts->uts_osnamesz); 940 nptr = nptr + uts->uts_osnamesz; 941 nrem -= uts->uts_osnamesz; 942 943 optr += MSG_STR_OSNAME_SIZE; 944 expanded = _expanded = 1; 945 } 946 947 } else if (strncmp(optr, MSG_ORIG(MSG_STR_OSREL), 948 MSG_STR_OSREL_SIZE) == 0) { 949 /* 950 * Establish the os release - like uname -r. 951 */ 952 if (uts == 0) 953 uts = conv_uts(); 954 955 if (uts && uts->uts_osrelsz) { 956 if (uts->uts_osrelsz >= nrem) 957 return ((char *)name); 958 959 (void) strncpy(nptr, uts->uts_osrel, 960 uts->uts_osrelsz); 961 nptr = nptr + uts->uts_osrelsz; 962 nrem -= uts->uts_osrelsz; 963 964 optr += MSG_STR_OSREL_SIZE; 965 expanded = _expanded = 1; 966 } 967 968 } else if ((strncmp(optr, MSG_ORIG(MSG_STR_ISALIST), 969 MSG_STR_ISALIST_SIZE) == 0) && next && (isaflag++ == 0)) { 970 /* 971 * Establish instruction sets from sysconf. Note that 972 * this is only meaningful from runpaths. 973 */ 974 if (isa == 0) 975 isa = conv_isalist(); 976 977 if (isa && isa->isa_listsz && 978 (nrem > isa->isa_opt->isa_namesz)) { 979 size_t mlen, tlen, hlen = optr - name; 980 size_t no; 981 char *lptr; 982 Isa_opt *opt = isa->isa_opt; 983 984 (void) strncpy(nptr, opt->isa_name, 985 opt->isa_namesz); 986 nptr = nptr + opt->isa_namesz; 987 nrem -= opt->isa_namesz; 988 989 optr += MSG_STR_ISALIST_SIZE; 990 expanded = _expanded = 1; 991 992 tlen = strlen(optr); 993 994 /* 995 * As ISALIST expands to a number of elements, 996 * establish a new list to return to the caller. 997 * This will contain the present path being 998 * processed redefined for each isalist option, 999 * plus the original remaining list entries. 1000 */ 1001 mlen = ((hlen + tlen) * (isa->isa_optno - 1)) + 1002 isa->isa_listsz - opt->isa_namesz; 1003 if (*next) 1004 mlen += strlen(*next); 1005 if ((_next = lptr = libld_malloc(mlen)) == 0) 1006 return (0); 1007 1008 for (no = 1, opt++; no < isa->isa_optno; 1009 no++, opt++) { 1010 (void) strncpy(lptr, name, hlen); 1011 lptr = lptr + hlen; 1012 (void) strncpy(lptr, opt->isa_name, 1013 opt->isa_namesz); 1014 lptr = lptr + opt->isa_namesz; 1015 (void) strncpy(lptr, optr, tlen); 1016 lptr = lptr + tlen; 1017 *lptr++ = ':'; 1018 } 1019 if (*next) 1020 (void) strcpy(lptr, *next); 1021 else 1022 *--lptr = '\0'; 1023 } 1024 } 1025 1026 /* 1027 * If no expansion occurred skip the $ and continue. 1028 */ 1029 if (_expanded == 0) 1030 *nptr++ = *optr++, nrem--; 1031 } 1032 1033 /* 1034 * If any ISALIST processing has occurred not only do we return the 1035 * expanded node we're presently working on, but we must also update the 1036 * remaining list so that it is effectively prepended with this node 1037 * expanded to all remaining isalist options. Note that we can only 1038 * handle one ISALIST per node. For more than one ISALIST to be 1039 * processed we'd need a better algorithm than above to replace the 1040 * newly generated list. Whether we want to encourage the number of 1041 * pathname permutations this would provide is another question. So, for 1042 * now if more than one ISALIST is encountered we return the original 1043 * node untouched. 1044 */ 1045 if (isaflag) { 1046 if (isaflag == 1) 1047 *next = _next; 1048 else 1049 return ((char *)name); 1050 } 1051 1052 *nptr = '\0'; 1053 1054 if (expanded) { 1055 if ((nptr = libld_malloc(strlen(_name) + 1)) == 0) 1056 return ((char *)name); 1057 (void) strcpy(nptr, _name); 1058 return (nptr); 1059 } 1060 return ((char *)name); 1061 } 1062 1063 /* 1064 * The Solaris ld does not put DT_VERSYM in the dynamic section, but the 1065 * GNU ld does, and it is used by the runtime linker to implement their 1066 * versioning scheme. Use this fact to determine if the sharable object 1067 * was produced by the GNU ld rather than the Solaris one, and to set 1068 * FLG_IF_GNUVER if so. This needs to be done before the symbols are 1069 * processed, since the answer determines whether we interpret the 1070 * symbols versions according to Solaris or GNU rules. 1071 */ 1072 /*ARGSUSED*/ 1073 static uintptr_t 1074 process_dynamic_isgnu(const char *name, Ifl_desc *ifl, Shdr *shdr, 1075 Elf_Scn *scn, Word ndx, int ident, Ofl_desc *ofl) 1076 { 1077 Dyn *dyn; 1078 Elf_Data *dp; 1079 uintptr_t error; 1080 1081 error = process_section(name, ifl, shdr, scn, ndx, ident, ofl); 1082 if ((error == 0) || (error == S_ERROR)) 1083 return (error); 1084 1085 /* Get the .dynamic data */ 1086 dp = elf_getdata(scn, NULL); 1087 1088 for (dyn = (Dyn *)dp->d_buf; dyn->d_tag != DT_NULL; dyn++) { 1089 if (dyn->d_tag == DT_VERSYM) { 1090 ifl->ifl_flags |= FLG_IF_GNUVER; 1091 break; 1092 } 1093 } 1094 return (1); 1095 } 1096 1097 /* 1098 * Process a dynamic section. If we are processing an explicit shared object 1099 * then we need to determine if it has a recorded SONAME, if so, this name will 1100 * be recorded in the output file being generated as the NEEDED entry rather 1101 * than the shared objects filename itself. 1102 * If the mode of the link-edit indicates that no undefined symbols should 1103 * remain, then we also need to build up a list of any additional shared object 1104 * dependencies this object may have. In this case save any NEEDED entries 1105 * together with any associated run-path specifications. This information is 1106 * recorded on the `ofl_soneed' list and will be analyzed after all explicit 1107 * file processing has been completed (refer finish_libs()). 1108 */ 1109 static uintptr_t 1110 process_dynamic(Is_desc *isc, Ifl_desc *ifl, Ofl_desc *ofl) 1111 { 1112 Dyn *data, *dyn; 1113 char *str, *rpath = NULL; 1114 const char *soname, *needed; 1115 Sdf_desc *sdf; 1116 Listnode *lnp; 1117 1118 data = (Dyn *)isc->is_indata->d_buf; 1119 str = (char *)ifl->ifl_isdesc[isc->is_shdr->sh_link]->is_indata->d_buf; 1120 1121 /* 1122 * First loop through the dynamic section looking for a run path. 1123 */ 1124 if (ofl->ofl_flags & (FLG_OF_NOUNDEF | FLG_OF_SYMBOLIC)) { 1125 for (dyn = data; dyn->d_tag != DT_NULL; dyn++) { 1126 if ((dyn->d_tag != DT_RPATH) && 1127 (dyn->d_tag != DT_RUNPATH)) 1128 continue; 1129 if ((rpath = str + (size_t)dyn->d_un.d_val) == NULL) 1130 continue; 1131 break; 1132 } 1133 } 1134 1135 /* 1136 * Now look for any needed dependencies (which may use the rpath) 1137 * or a new SONAME. 1138 */ 1139 for (dyn = data; dyn->d_tag != DT_NULL; dyn++) { 1140 if (dyn->d_tag == DT_SONAME) { 1141 if ((soname = str + (size_t)dyn->d_un.d_val) == NULL) 1142 continue; 1143 1144 /* 1145 * Update the input file structure with this new name. 1146 */ 1147 ifl->ifl_soname = soname; 1148 1149 } else if ((dyn->d_tag == DT_NEEDED) || 1150 (dyn->d_tag == DT_USED)) { 1151 if (!(ofl->ofl_flags & 1152 (FLG_OF_NOUNDEF | FLG_OF_SYMBOLIC))) 1153 continue; 1154 if ((needed = str + (size_t)dyn->d_un.d_val) == NULL) 1155 continue; 1156 1157 /* 1158 * Determine if this needed entry is already recorded on 1159 * the shared object needed list, if not create a new 1160 * definition for later processing (see finish_libs()). 1161 */ 1162 needed = expand(ifl->ifl_name, needed, (char **)0); 1163 1164 if ((sdf = sdf_find(needed, &ofl->ofl_soneed)) == 0) { 1165 if ((sdf = sdf_add(needed, 1166 &ofl->ofl_soneed)) == (Sdf_desc *)S_ERROR) 1167 return (S_ERROR); 1168 sdf->sdf_rfile = ifl->ifl_name; 1169 } 1170 1171 /* 1172 * Record the runpath (Note that we take the first 1173 * runpath which is exactly what ld.so.1 would do during 1174 * its dependency processing). 1175 */ 1176 if (rpath && (sdf->sdf_rpath == 0)) 1177 sdf->sdf_rpath = rpath; 1178 1179 } else if (dyn->d_tag == DT_FLAGS_1) { 1180 if (dyn->d_un.d_val & (DF_1_INITFIRST | DF_1_INTERPOSE)) 1181 ifl->ifl_flags &= ~FLG_IF_LAZYLD; 1182 if (dyn->d_un.d_val & DF_1_DISPRELPND) 1183 ifl->ifl_flags |= FLG_IF_DISPPEND; 1184 if (dyn->d_un.d_val & DF_1_DISPRELDNE) 1185 ifl->ifl_flags |= FLG_IF_DISPDONE; 1186 if (dyn->d_un.d_val & DF_1_NODIRECT) 1187 ifl->ifl_flags |= FLG_IF_NODIRECT; 1188 1189 } else if ((dyn->d_tag == DT_AUDIT) && 1190 (ifl->ifl_flags & FLG_IF_NEEDED)) { 1191 /* 1192 * Record audit string as DT_DEPAUDIT. 1193 */ 1194 if ((ofl->ofl_depaudit = add_string(ofl->ofl_depaudit, 1195 (str + (size_t)dyn->d_un.d_val))) == 1196 (const char *)S_ERROR) 1197 return (S_ERROR); 1198 1199 } else if (dyn->d_tag == DT_SUNW_RTLDINF) { 1200 /* 1201 * If a library has the SUNW_RTLDINF .dynamic entry 1202 * then we must not permit lazyloading of this library. 1203 * This is because critical startup information (TLS 1204 * routines) are provided as part of these interfaces 1205 * and we must have them as part of process startup. 1206 */ 1207 ifl->ifl_flags &= ~FLG_IF_LAZYLD; 1208 } 1209 } 1210 1211 /* 1212 * Perform some SONAME sanity checks. 1213 */ 1214 if (ifl->ifl_flags & FLG_IF_NEEDED) { 1215 Ifl_desc *sifl; 1216 1217 /* 1218 * Determine if anyone else will cause the same SONAME to be 1219 * used (this is either caused by two different files having the 1220 * same SONAME, or by one file SONAME actually matching another 1221 * file basename (if no SONAME is specified within a shared 1222 * library its basename will be used)). Probably rare, but some 1223 * idiot will do it. 1224 */ 1225 for (LIST_TRAVERSE(&ofl->ofl_sos, lnp, sifl)) { 1226 if ((strcmp(ifl->ifl_soname, sifl->ifl_soname) == 0) && 1227 (ifl != sifl)) { 1228 const char *hint, *iflb, *siflb; 1229 1230 /* 1231 * Determine the basename of each file. Perhaps 1232 * there are multiple copies of the same file 1233 * being brought in using different -L search 1234 * paths, and if so give an extra hint in the 1235 * error message. 1236 */ 1237 iflb = strrchr(ifl->ifl_name, '/'); 1238 if (iflb == NULL) 1239 iflb = ifl->ifl_name; 1240 else 1241 iflb++; 1242 1243 siflb = strrchr(sifl->ifl_name, '/'); 1244 if (siflb == NULL) 1245 siflb = sifl->ifl_name; 1246 else 1247 siflb++; 1248 1249 if (strcmp(iflb, siflb) == 0) 1250 hint = MSG_INTL(MSG_REC_CNFLTHINT); 1251 else 1252 hint = MSG_ORIG(MSG_STR_EMPTY); 1253 1254 eprintf(ofl->ofl_lml, ERR_FATAL, 1255 MSG_INTL(MSG_REC_OBJCNFLT), sifl->ifl_name, 1256 ifl->ifl_name, sifl->ifl_soname, hint); 1257 ofl->ofl_flags |= FLG_OF_FATAL; 1258 return (0); 1259 } 1260 } 1261 1262 /* 1263 * If the SONAME is the same as the name the user wishes to 1264 * record when building a dynamic library (refer -h option), 1265 * we also have a name clash. 1266 */ 1267 if (ofl->ofl_soname && 1268 (strcmp(ofl->ofl_soname, ifl->ifl_soname) == 0)) { 1269 eprintf(ofl->ofl_lml, ERR_FATAL, 1270 MSG_INTL(MSG_REC_OPTCNFLT), ifl->ifl_name, 1271 MSG_INTL(MSG_MARG_SONAME), ifl->ifl_soname); 1272 ofl->ofl_flags |= FLG_OF_FATAL; 1273 return (0); 1274 } 1275 } 1276 return (1); 1277 } 1278 1279 /* 1280 * Process a group section. 1281 */ 1282 static uintptr_t 1283 process_group(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 1284 Word ndx, int ident, Ofl_desc *ofl) 1285 { 1286 uintptr_t error; 1287 1288 error = process_section(name, ifl, shdr, scn, ndx, ident, ofl); 1289 if ((error == 0) || (error == S_ERROR)) 1290 return (error); 1291 1292 /* 1293 * Indicate that this input file has groups to process. Groups are 1294 * processed after all input sections have been processed. 1295 */ 1296 ifl->ifl_flags |= FLG_IS_GROUPS; 1297 1298 return (1); 1299 } 1300 1301 /* 1302 * Process a relocation entry. At this point all input sections from this 1303 * input file have been assigned an input section descriptor which is saved 1304 * in the `ifl_isdesc' array. 1305 */ 1306 static uintptr_t 1307 rel_process(Is_desc *isc, Ifl_desc *ifl, Ofl_desc *ofl) 1308 { 1309 Word rndx; 1310 Is_desc *risc; 1311 Os_desc *osp; 1312 Shdr *shdr = isc->is_shdr; 1313 Conv_inv_buf_t inv_buf; 1314 1315 /* 1316 * Make sure this is a valid relocation we can handle. 1317 */ 1318 if (shdr->sh_type != ld_targ.t_m.m_rel_sht_type) { 1319 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_FIL_INVALSEC), 1320 ifl->ifl_name, isc->is_name, 1321 conv_sec_type(ifl->ifl_ehdr->e_machine, 1322 shdr->sh_type, 0, &inv_buf)); 1323 ofl->ofl_flags |= FLG_OF_FATAL; 1324 return (0); 1325 } 1326 1327 /* 1328 * From the relocation section header information determine which 1329 * section needs the actual relocation. Determine which output section 1330 * this input section has been assigned to and add to its relocation 1331 * list. Note that the relocation section may be null if it is not 1332 * required (ie. .debug, .stabs, etc). 1333 */ 1334 rndx = shdr->sh_info; 1335 if (rndx >= ifl->ifl_shnum) { 1336 /* 1337 * Broken input file. 1338 */ 1339 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_FIL_INVSHINFO), 1340 ifl->ifl_name, isc->is_name, EC_XWORD(rndx)); 1341 ofl->ofl_flags |= FLG_OF_FATAL; 1342 return (0); 1343 } 1344 if (rndx == 0) { 1345 if (list_appendc(&ofl->ofl_extrarels, isc) == 0) 1346 return (S_ERROR); 1347 } else if ((risc = ifl->ifl_isdesc[rndx]) != 0) { 1348 /* 1349 * Discard relocations if they are against a section 1350 * which has been discarded. 1351 */ 1352 if (risc->is_flags & FLG_IS_DISCARD) 1353 return (1); 1354 if ((osp = risc->is_osdesc) == 0) { 1355 if (risc->is_shdr->sh_type == SHT_SUNW_move) { 1356 /* 1357 * This section is processed later 1358 * in sunwmove_preprocess() and 1359 * reloc_init(). 1360 */ 1361 if (list_appendc(&ofl->ofl_mvrelisdescs, 1362 isc) == 0) 1363 return (S_ERROR); 1364 return (1); 1365 } 1366 eprintf(ofl->ofl_lml, ERR_FATAL, 1367 MSG_INTL(MSG_FIL_INVRELOC1), ifl->ifl_name, 1368 isc->is_name, risc->is_name); 1369 return (0); 1370 } 1371 if (list_appendc(&osp->os_relisdescs, isc) == 0) 1372 return (S_ERROR); 1373 } 1374 return (1); 1375 } 1376 1377 /* 1378 * SHF_EXCLUDE flags is set for this section. 1379 */ 1380 static uintptr_t 1381 process_exclude(const char *name, Ifl_desc *ifl, Shdr *shdr, Elf_Scn *scn, 1382 Word ndx, Ofl_desc *ofl) 1383 { 1384 /* 1385 * Sections SHT_SYMTAB and SHT_DYNDYM, even if SHF_EXCLUDE is on, might 1386 * be needed for ld processing. These sections need to be in the 1387 * internal table. Later it will be determined whether they can be 1388 * eliminated or not. 1389 */ 1390 if (shdr->sh_type == SHT_SYMTAB || shdr->sh_type == SHT_DYNSYM) 1391 return (0); 1392 1393 /* 1394 * Other checks 1395 */ 1396 if (shdr->sh_flags & SHF_ALLOC) { 1397 /* 1398 * A conflict, issue an warning message, and ignore the section. 1399 */ 1400 eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_FIL_EXCLUDE), 1401 ifl->ifl_name, name); 1402 return (0); 1403 } 1404 1405 /* 1406 * This sections is not going to the output file. 1407 */ 1408 return (process_section(name, ifl, shdr, scn, ndx, 0, ofl)); 1409 } 1410 1411 /* 1412 * Section processing state table. `Initial' describes the required initial 1413 * procedure to be called (if any), `Final' describes the final processing 1414 * procedure (ie. things that can only be done when all required sections 1415 * have been collected). 1416 */ 1417 static uintptr_t (*Initial[SHT_NUM][2])() = { 1418 1419 /* ET_REL ET_DYN */ 1420 1421 /* SHT_NULL */ invalid_section, invalid_section, 1422 /* SHT_PROGBITS */ process_progbits, process_progbits, 1423 /* SHT_SYMTAB */ process_input, process_input, 1424 /* SHT_STRTAB */ process_strtab, process_strtab, 1425 /* SHT_RELA */ process_reloc, process_reloc, 1426 /* SHT_HASH */ invalid_section, NULL, 1427 /* SHT_DYNAMIC */ process_rel_dynamic, process_dynamic_isgnu, 1428 /* SHT_NOTE */ process_section, NULL, 1429 /* SHT_NOBITS */ process_nobits, process_nobits, 1430 /* SHT_REL */ process_reloc, process_reloc, 1431 /* SHT_SHLIB */ process_section, invalid_section, 1432 /* SHT_DYNSYM */ invalid_section, process_input, 1433 /* SHT_UNKNOWN12 */ process_progbits, process_progbits, 1434 /* SHT_UNKNOWN13 */ process_progbits, process_progbits, 1435 /* SHT_INIT_ARRAY */ process_array, NULL, 1436 /* SHT_FINI_ARRAY */ process_array, NULL, 1437 /* SHT_PREINIT_ARRAY */ process_array, NULL, 1438 /* SHT_GROUP */ process_group, invalid_section, 1439 /* SHT_SYMTAB_SHNDX */ process_sym_shndx, NULL 1440 }; 1441 1442 static uintptr_t (*Final[SHT_NUM][2])() = { 1443 1444 /* SHT_NULL */ NULL, NULL, 1445 /* SHT_PROGBITS */ NULL, NULL, 1446 /* SHT_SYMTAB */ ld_sym_process, ld_sym_process, 1447 /* SHT_STRTAB */ NULL, NULL, 1448 /* SHT_RELA */ rel_process, NULL, 1449 /* SHT_HASH */ NULL, NULL, 1450 /* SHT_DYNAMIC */ NULL, process_dynamic, 1451 /* SHT_NOTE */ NULL, NULL, 1452 /* SHT_NOBITS */ NULL, NULL, 1453 /* SHT_REL */ rel_process, NULL, 1454 /* SHT_SHLIB */ NULL, NULL, 1455 /* SHT_DYNSYM */ NULL, ld_sym_process, 1456 /* SHT_UNKNOWN12 */ NULL, NULL, 1457 /* SHT_UNKNOWN13 */ NULL, NULL, 1458 /* SHT_INIT_ARRAY */ array_process, NULL, 1459 /* SHT_FINI_ARRAY */ array_process, NULL, 1460 /* SHT_PREINIT_ARRAY */ array_process, NULL, 1461 /* SHT_GROUP */ NULL, NULL, 1462 /* SHT_SYMTAB_SHNDX */ sym_shndx_process, NULL 1463 }; 1464 1465 #define MAXNDXSIZE 10 1466 1467 /* 1468 * Process an elf file. Each section is compared against the section state 1469 * table to determine whether it should be processed (saved), ignored, or 1470 * is invalid for the type of input file being processed. 1471 */ 1472 static uintptr_t 1473 process_elf(Ifl_desc *ifl, Elf *elf, Ofl_desc *ofl) 1474 { 1475 Elf_Scn *scn; 1476 Shdr *shdr; 1477 Word ndx, sndx, ordndx = 0, ordcnt = 0; 1478 char *str, *name, _name[MAXNDXSIZE]; 1479 Word row, column; 1480 int ident; 1481 uintptr_t error; 1482 Is_desc *vdfisp, *vndisp, *vsyisp, *sifisp, *capisp; 1483 Sdf_desc *sdf; 1484 1485 /* 1486 * First process the .shstrtab section so that later sections can 1487 * reference their name. 1488 */ 1489 ld_sup_file(ofl, ifl->ifl_name, elf_kind(elf), ifl->ifl_flags, elf); 1490 1491 sndx = ifl->ifl_shstrndx; 1492 if ((scn = elf_getscn(elf, (size_t)sndx)) == NULL) { 1493 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_GETSCN), 1494 ifl->ifl_name); 1495 ofl->ofl_flags |= FLG_OF_FATAL; 1496 return (0); 1497 } 1498 if ((shdr = elf_getshdr(scn)) == NULL) { 1499 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_GETSHDR), 1500 ifl->ifl_name); 1501 ofl->ofl_flags |= FLG_OF_FATAL; 1502 return (0); 1503 } 1504 if ((name = elf_strptr(elf, (size_t)sndx, (size_t)shdr->sh_name)) == 1505 NULL) { 1506 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_STRPTR), 1507 ifl->ifl_name); 1508 ofl->ofl_flags |= FLG_OF_FATAL; 1509 return (0); 1510 } 1511 1512 if (ld_sup_input_section(ofl, ifl, name, &shdr, sndx, scn, 1513 elf) == S_ERROR) 1514 return (S_ERROR); 1515 1516 /* 1517 * Reset the name since the shdr->sh_name could have been changed as 1518 * part of ld_sup_input_section(). If there is no name, fabricate one 1519 * using the section index. 1520 */ 1521 if (shdr->sh_name == 0) { 1522 (void) snprintf(_name, MAXNDXSIZE, MSG_ORIG(MSG_FMT_INDEX), 1523 EC_XWORD(sndx)); 1524 if ((name = libld_malloc(strlen(_name) + 1)) == 0) 1525 return (S_ERROR); 1526 (void) strcpy(name, _name); 1527 1528 } else if ((name = elf_strptr(elf, (size_t)sndx, 1529 (size_t)shdr->sh_name)) == NULL) { 1530 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_STRPTR), 1531 ifl->ifl_name); 1532 ofl->ofl_flags |= FLG_OF_FATAL; 1533 return (0); 1534 } 1535 1536 error = process_strtab(name, ifl, shdr, scn, sndx, FALSE, ofl); 1537 if ((error == 0) || (error == S_ERROR)) 1538 return (error); 1539 str = ifl->ifl_isdesc[sndx]->is_indata->d_buf; 1540 1541 /* 1542 * Determine the state table column from the input file type. Note, 1543 * shared library sections are not added to the output section list. 1544 */ 1545 if (ifl->ifl_ehdr->e_type == ET_DYN) { 1546 column = 1; 1547 ofl->ofl_soscnt++; 1548 ident = ld_targ.t_id.id_null; 1549 } else { 1550 column = 0; 1551 ofl->ofl_objscnt++; 1552 ident = ld_targ.t_id.id_unknown; 1553 } 1554 1555 DBG_CALL(Dbg_file_generic(ofl->ofl_lml, ifl)); 1556 ndx = 0; 1557 vdfisp = vndisp = vsyisp = sifisp = capisp = 0; 1558 scn = NULL; 1559 while (scn = elf_nextscn(elf, scn)) { 1560 ndx++; 1561 1562 /* 1563 * As we've already processed the .shstrtab don't do it again. 1564 */ 1565 if (ndx == sndx) 1566 continue; 1567 1568 if ((shdr = elf_getshdr(scn)) == NULL) { 1569 eprintf(ofl->ofl_lml, ERR_ELF, 1570 MSG_INTL(MSG_ELF_GETSHDR), ifl->ifl_name); 1571 ofl->ofl_flags |= FLG_OF_FATAL; 1572 return (0); 1573 } 1574 name = str + (size_t)(shdr->sh_name); 1575 1576 if (ld_sup_input_section(ofl, ifl, name, &shdr, ndx, scn, 1577 elf) == S_ERROR) 1578 return (S_ERROR); 1579 1580 /* 1581 * Reset the name since the shdr->sh_name could have been 1582 * changed as part of ld_sup_input_section(). If there is no 1583 * name, fabricate one using the section index. 1584 */ 1585 if (shdr->sh_name == 0) { 1586 (void) snprintf(_name, MAXNDXSIZE, 1587 MSG_ORIG(MSG_FMT_INDEX), EC_XWORD(ndx)); 1588 if ((name = libld_malloc(strlen(_name) + 1)) == 0) 1589 return (S_ERROR); 1590 (void) strcpy(name, _name); 1591 } else 1592 name = str + (size_t)(shdr->sh_name); 1593 1594 row = shdr->sh_type; 1595 1596 /* 1597 * If the section has the SHF_EXCLUDE flag on, and we're not 1598 * generating a relocatable object, exclude the section. 1599 */ 1600 if (((shdr->sh_flags & SHF_EXCLUDE) != 0) && 1601 ((ofl->ofl_flags & FLG_OF_RELOBJ) == 0)) { 1602 if ((error = process_exclude(name, ifl, shdr, scn, 1603 ndx, ofl)) == S_ERROR) 1604 return (S_ERROR); 1605 if (error == 1) 1606 continue; 1607 } 1608 1609 /* 1610 * If this is a standard section type process it via the 1611 * appropriate action routine. 1612 */ 1613 if (row < SHT_NUM) { 1614 if (Initial[row][column] != NULL) { 1615 if (Initial[row][column](name, ifl, shdr, scn, 1616 ndx, ident, ofl) == S_ERROR) 1617 return (S_ERROR); 1618 } 1619 } else { 1620 /* 1621 * If this section is below SHT_LOSUNW then we don't 1622 * really know what to do with it, issue a warning 1623 * message but do the basic section processing anyway. 1624 */ 1625 if (row < (Word)SHT_LOSUNW) { 1626 Conv_inv_buf_t inv_buf; 1627 1628 eprintf(ofl->ofl_lml, ERR_WARNING, 1629 MSG_INTL(MSG_FIL_INVALSEC), ifl->ifl_name, 1630 name, 1631 conv_sec_type(ifl->ifl_ehdr->e_machine, 1632 shdr->sh_type, 0, &inv_buf)); 1633 } 1634 1635 /* 1636 * Handle sections greater than SHT_LOSUNW. 1637 */ 1638 switch (row) { 1639 case SHT_SUNW_dof: 1640 if (process_section(name, ifl, shdr, scn, 1641 ndx, ident, ofl) == S_ERROR) 1642 return (S_ERROR); 1643 break; 1644 case SHT_SUNW_cap: 1645 if (process_section(name, ifl, shdr, scn, 1646 ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 1647 return (S_ERROR); 1648 capisp = ifl->ifl_isdesc[ndx]; 1649 break; 1650 case SHT_SUNW_DEBUGSTR: 1651 case SHT_SUNW_DEBUG: 1652 if (process_debug(name, ifl, shdr, scn, 1653 ndx, ident, ofl) == S_ERROR) 1654 return (S_ERROR); 1655 break; 1656 case SHT_SUNW_move: 1657 if (process_section(name, ifl, shdr, scn, 1658 ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 1659 return (S_ERROR); 1660 break; 1661 case SHT_SUNW_syminfo: 1662 if (process_section(name, ifl, shdr, scn, 1663 ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 1664 return (S_ERROR); 1665 sifisp = ifl->ifl_isdesc[ndx]; 1666 break; 1667 case SHT_SUNW_ANNOTATE: 1668 if (process_progbits(name, ifl, shdr, scn, 1669 ndx, ident, ofl) == S_ERROR) 1670 return (S_ERROR); 1671 break; 1672 case SHT_SUNW_COMDAT: 1673 if (process_progbits(name, ifl, shdr, scn, 1674 ndx, ident, ofl) == S_ERROR) 1675 return (S_ERROR); 1676 ifl->ifl_isdesc[ndx]->is_flags |= FLG_IS_COMDAT; 1677 break; 1678 case SHT_SUNW_verdef: 1679 if (process_section(name, ifl, shdr, scn, 1680 ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 1681 return (S_ERROR); 1682 vdfisp = ifl->ifl_isdesc[ndx]; 1683 break; 1684 case SHT_SUNW_verneed: 1685 if (process_section(name, ifl, shdr, scn, 1686 ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 1687 return (S_ERROR); 1688 vndisp = ifl->ifl_isdesc[ndx]; 1689 break; 1690 case SHT_SUNW_versym: 1691 if (process_section(name, ifl, shdr, scn, 1692 ndx, ld_targ.t_id.id_null, ofl) == S_ERROR) 1693 return (S_ERROR); 1694 vsyisp = ifl->ifl_isdesc[ndx]; 1695 break; 1696 case SHT_SPARC_GOTDATA: 1697 /* 1698 * SHT_SPARC_GOTDATA (0x70000000) is in the 1699 * SHT_LOPROC - SHT_HIPROC range reserved 1700 * for processor-specific semantics. It is 1701 * only meaningful for sparc targets. 1702 */ 1703 if (ld_targ.t_m.m_mach != 1704 LD_TARG_BYCLASS(EM_SPARC, EM_SPARCV9)) 1705 goto do_default; 1706 if (process_section(name, ifl, shdr, scn, 1707 ndx, ld_targ.t_id.id_gotdata, ofl) == 1708 S_ERROR) 1709 return (S_ERROR); 1710 break; 1711 #if defined(_ELF64) 1712 case SHT_AMD64_UNWIND: 1713 /* 1714 * SHT_AMD64_UNWIND (0x70000001) is in the 1715 * SHT_LOPROC - SHT_HIPROC range reserved 1716 * for processor-specific semantics. It is 1717 * only meaningful for amd64 targets. 1718 */ 1719 if (ld_targ.t_m.m_mach != EM_AMD64) 1720 goto do_default; 1721 1722 /* 1723 * Target is x86, so this really is 1724 * SHT_AMD64_UNWIND 1725 */ 1726 if (column == 0) { 1727 /* 1728 * column == ET_REL 1729 */ 1730 if (process_section(name, ifl, shdr, 1731 scn, ndx, ld_targ.t_id.id_unwind, 1732 ofl) == S_ERROR) 1733 return (S_ERROR); 1734 } 1735 break; 1736 #endif 1737 default: 1738 do_default: 1739 if (ident != ld_targ.t_id.id_null) 1740 ident = ld_targ.t_id.id_user; 1741 if (process_section(name, ifl, shdr, scn, 1742 ndx, ident, ofl) == S_ERROR) 1743 return (S_ERROR); 1744 break; 1745 } 1746 } 1747 } 1748 1749 /* 1750 * Now that all input sections have been analyzed, and prior to placing 1751 * any input sections to their output sections, process any groups. 1752 * Groups can contribute COMDAT items, which may get discarded as part 1753 * of placement. In addition, COMDAT names may require transformation 1754 * to indicate different output section placement. 1755 */ 1756 if (ifl->ifl_flags & FLG_IS_GROUPS) { 1757 for (ndx = 1; ndx < ifl->ifl_shnum; ndx++) { 1758 Is_desc *isp; 1759 1760 if (((isp = ifl->ifl_isdesc[ndx]) == NULL) || 1761 (isp->is_shdr->sh_type != SHT_GROUP)) 1762 continue; 1763 1764 if (ld_group_process(isp, ofl) == S_ERROR) 1765 return (S_ERROR); 1766 } 1767 } 1768 1769 /* 1770 * Now that all of input sections have been processed, place them 1771 * in the appropriate output sections. 1772 */ 1773 for (ndx = 1; ndx < ifl->ifl_shnum; ndx++) { 1774 Is_desc *isp; 1775 Shdr *shdr; 1776 1777 if (((isp = ifl->ifl_isdesc[ndx]) == NULL) || 1778 ((isp->is_flags & FLG_IS_PLACE) == 0)) 1779 continue; 1780 1781 shdr = isp->is_shdr; 1782 1783 /* 1784 * Place all non-ordered sections within their appropriate 1785 * output section. 1786 * 1787 * Ordered sections are sorted based on the relative ordering 1788 * of the section pointed to by the sh_info entry. An ordered 1789 * section, whose sh_link points to itself, must also be placed 1790 * in the output image so as to control the ordered processing 1791 * that follows (see FLG_IF_ORDERED below). 1792 */ 1793 if (((isp->is_flags & FLG_IS_ORDERED) == 0) || 1794 ((ndx == shdr->sh_link) && 1795 (shdr->sh_flags & SHF_ORDERED))) { 1796 if (ld_place_section(ofl, isp, 1797 isp->is_keyident, 0) == (Os_desc *)S_ERROR) 1798 return (S_ERROR); 1799 } 1800 1801 /* 1802 * If a section requires ordered processing, keep track of the 1803 * section index and count to optimize later section traversal. 1804 */ 1805 if (isp->is_flags & FLG_IS_ORDERED) { 1806 ordcnt++; 1807 if (ordndx == 0) 1808 ordndx = ndx; 1809 } 1810 } 1811 1812 /* 1813 * Some sections have special ordering requirements, that are based off 1814 * of the section pointed to by their sh_info entry. This controlling 1815 * section will have been placed (above), and thus any ordered sections 1816 * can now be processed. 1817 */ 1818 if (ifl->ifl_flags & FLG_IF_ORDERED) { 1819 Word cnt = 0; 1820 1821 for (ndx = ordndx; 1822 (ndx < ifl->ifl_shnum) && (cnt < ordcnt); ndx++) { 1823 Is_desc *isp; 1824 1825 if (((isp = ifl->ifl_isdesc[ndx]) == NULL) || 1826 ((isp->is_flags & FLG_IS_ORDERED) == 0)) 1827 continue; 1828 1829 if (ld_process_ordered(ifl, ofl, ndx, 1830 ifl->ifl_shnum) == S_ERROR) 1831 return (S_ERROR); 1832 } 1833 } 1834 1835 /* 1836 * If this is an explicit shared object determine if the user has 1837 * specified a control definition. This descriptor may specify which 1838 * version definitions can be used from this object (it may also update 1839 * the dependency to USED and supply an alternative SONAME). 1840 */ 1841 sdf = 0; 1842 if (column && (ifl->ifl_flags & FLG_IF_NEEDED)) { 1843 const char *base; 1844 1845 /* 1846 * Use the basename of the input file (typically this is the 1847 * compilation environment name, ie. libfoo.so). 1848 */ 1849 if ((base = strrchr(ifl->ifl_name, '/')) == NULL) 1850 base = ifl->ifl_name; 1851 else 1852 base++; 1853 1854 if ((sdf = sdf_find(base, &ofl->ofl_socntl)) != 0) { 1855 sdf->sdf_file = ifl; 1856 ifl->ifl_sdfdesc = sdf; 1857 } 1858 } 1859 1860 /* 1861 * Process any hardware/software capabilities sections. Only the 1862 * capabilities for input relocatable objects are propagated. If the 1863 * relocatable objects don't contain any capabilities, any capability 1864 * state that has already been gathered will prevail. 1865 */ 1866 if (capisp) 1867 process_cap(ifl, capisp, ofl); 1868 1869 /* 1870 * Process any version dependencies. These will establish shared object 1871 * `needed' entries in the same manner as will be generated from the 1872 * .dynamic's NEEDED entries. 1873 */ 1874 if (vndisp && (ofl->ofl_flags & (FLG_OF_NOUNDEF | FLG_OF_SYMBOLIC))) 1875 if (ld_vers_need_process(vndisp, ifl, ofl) == S_ERROR) 1876 return (S_ERROR); 1877 1878 /* 1879 * Before processing any symbol resolution or relocations process any 1880 * version sections. 1881 */ 1882 if (vsyisp) 1883 (void) ld_vers_sym_process(ofl->ofl_lml, vsyisp, ifl); 1884 1885 if (ifl->ifl_versym && 1886 (vdfisp || (sdf && (sdf->sdf_flags & FLG_SDF_SELECT)))) 1887 if (ld_vers_def_process(vdfisp, ifl, ofl) == S_ERROR) 1888 return (S_ERROR); 1889 1890 /* 1891 * Having collected the appropriate sections carry out any additional 1892 * processing if necessary. 1893 */ 1894 for (ndx = 0; ndx < ifl->ifl_shnum; ndx++) { 1895 Is_desc *isp; 1896 1897 if ((isp = ifl->ifl_isdesc[ndx]) == 0) 1898 continue; 1899 row = isp->is_shdr->sh_type; 1900 1901 if ((isp->is_flags & FLG_IS_DISCARD) == 0) 1902 ld_sup_section(ofl, isp->is_name, isp->is_shdr, ndx, 1903 isp->is_indata, elf); 1904 1905 /* 1906 * If this is a ST_SUNW_move section from a 1907 * a relocatable file, keep the input section. 1908 */ 1909 if ((row == SHT_SUNW_move) && (column == 0)) { 1910 if (list_appendc(&(ofl->ofl_ismove), isp) == 0) 1911 return (S_ERROR); 1912 } 1913 1914 /* 1915 * If this is a standard section type process it via the 1916 * appropriate action routine. 1917 */ 1918 if (row < SHT_NUM) { 1919 if (Final[row][column] != NULL) { 1920 if (Final[row][column](isp, ifl, 1921 ofl) == S_ERROR) 1922 return (S_ERROR); 1923 } 1924 #if defined(_ELF64) 1925 } else if ((row == SHT_AMD64_UNWIND) && (column == 0)) { 1926 Os_desc *osp = isp->is_osdesc; 1927 1928 /* 1929 * SHT_AMD64_UNWIND (0x70000001) is in the SHT_LOPROC - 1930 * SHT_HIPROC range reserved for processor-specific 1931 * semantics, and is only meaningful for amd64 targets. 1932 * 1933 * Only process unwind contents from relocatable 1934 * objects. 1935 */ 1936 if (osp && (ld_targ.t_m.m_mach == EM_AMD64) && 1937 (ld_targ.t_uw.uw_append_unwind != NULL) && 1938 ((*ld_targ.t_uw.uw_append_unwind)(osp, ofl) == 1939 S_ERROR)) 1940 return (S_ERROR); 1941 #endif 1942 } 1943 } 1944 1945 /* 1946 * After processing any symbol resolution, and if this dependency 1947 * indicates it contains symbols that can't be directly bound to, 1948 * set the symbols appropriately. 1949 */ 1950 if (sifisp && ((ifl->ifl_flags & (FLG_IF_NEEDED | FLG_IF_NODIRECT)) == 1951 (FLG_IF_NEEDED | FLG_IF_NODIRECT))) 1952 (void) ld_sym_nodirect(sifisp, ifl, ofl); 1953 1954 return (1); 1955 } 1956 1957 /* 1958 * Process the current input file. There are basically three types of files 1959 * that come through here: 1960 * 1961 * o files explicitly defined on the command line (ie. foo.o or bar.so), 1962 * in this case only the `name' field is valid. 1963 * 1964 * o libraries determined from the -l command line option (ie. -lbar), 1965 * in this case the `soname' field contains the basename of the located 1966 * file. 1967 * 1968 * Any shared object specified via the above two conventions must be recorded 1969 * as a needed dependency. 1970 * 1971 * o libraries specified as dependencies of those libraries already obtained 1972 * via the command line (ie. bar.so has a DT_NEEDED entry of fred.so.1), 1973 * in this case the `soname' field contains either a full pathname (if the 1974 * needed entry contained a `/'), or the basename of the located file. 1975 * These libraries are processed to verify symbol binding but are not 1976 * recorded as dependencies of the output file being generated. 1977 */ 1978 Ifl_desc * 1979 ld_process_ifl(const char *name, const char *soname, int fd, Elf *elf, 1980 Word flags, Ofl_desc *ofl, Rej_desc *rej) 1981 { 1982 Ifl_desc *ifl; 1983 Ehdr *ehdr; 1984 Listnode *lnp; 1985 uintptr_t error = 0; 1986 struct stat status; 1987 Ar_desc *adp; 1988 Rej_desc _rej; 1989 1990 /* 1991 * If this file was not extracted from an archive obtain its device 1992 * information. This will be used to determine if the file has already 1993 * been processed (rather than simply comparing filenames, the device 1994 * information provides a quicker comparison and detects linked files). 1995 */ 1996 if (fd && ((flags & FLG_IF_EXTRACT) == 0)) 1997 (void) fstat(fd, &status); 1998 else { 1999 status.st_dev = 0; 2000 status.st_ino = 0; 2001 } 2002 2003 switch (elf_kind(elf)) { 2004 case ELF_K_AR: 2005 /* 2006 * Determine if we've already come across this archive file. 2007 */ 2008 if (!(flags & FLG_IF_EXTRACT)) { 2009 for (LIST_TRAVERSE(&ofl->ofl_ars, lnp, adp)) { 2010 if ((adp->ad_stdev != status.st_dev) || 2011 (adp->ad_stino != status.st_ino)) 2012 continue; 2013 2014 /* 2015 * We've seen this file before so reuse the 2016 * original archive descriptor and discard the 2017 * new elf descriptor. Note that a file 2018 * descriptor is unnecessary, as the file is 2019 * already available in memory. 2020 */ 2021 DBG_CALL(Dbg_file_reuse(ofl->ofl_lml, name, 2022 adp->ad_name)); 2023 (void) elf_end(elf); 2024 return ((Ifl_desc *)ld_process_archive(name, -1, 2025 adp, ofl)); 2026 } 2027 } 2028 2029 /* 2030 * As we haven't processed this file before establish a new 2031 * archive descriptor. 2032 */ 2033 adp = ld_ar_setup(name, elf, ofl); 2034 if ((adp == 0) || (adp == (Ar_desc *)S_ERROR)) 2035 return ((Ifl_desc *)adp); 2036 adp->ad_stdev = status.st_dev; 2037 adp->ad_stino = status.st_ino; 2038 2039 ld_sup_file(ofl, name, ELF_K_AR, flags, elf); 2040 2041 /* 2042 * Indicate that the ELF descriptor no longer requires a file 2043 * descriptor by reading the entire file. The file is already 2044 * read via the initial mmap(2) behind elf_begin(3elf), thus 2045 * this operation is effectively a no-op. However, a side- 2046 * effect is that the internal file descriptor, maintained in 2047 * the ELF descriptor, is set to -1. This setting will not 2048 * be compared with any file descriptor that is passed to 2049 * elf_begin(), should this archive, or one of the archive 2050 * members, be processed again from the command line or 2051 * because of a -z rescan. 2052 */ 2053 if (elf_cntl(elf, ELF_C_FDREAD) == -1) { 2054 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_CNTL), 2055 name); 2056 ofl->ofl_flags |= FLG_OF_FATAL; 2057 return (NULL); 2058 } 2059 2060 return ((Ifl_desc *)ld_process_archive(name, -1, adp, ofl)); 2061 2062 case ELF_K_ELF: 2063 /* 2064 * Obtain the elf header so that we can determine what type of 2065 * elf ELF_K_ELF file this is. 2066 */ 2067 if ((ehdr = elf_getehdr(elf)) == NULL) { 2068 int _class = gelf_getclass(elf); 2069 2070 /* 2071 * Failure could occur for a number of reasons at this 2072 * point. Typically the files class is incorrect (ie. 2073 * user is building 64-bit but managed to pint at 32-bit 2074 * libraries). However any number of elf errors can 2075 * also occur, such as from a truncated or corrupt file. 2076 * Here we try and get the best error message possible. 2077 */ 2078 if (ld_targ.t_m.m_class != _class) { 2079 _rej.rej_type = SGS_REJ_CLASS; 2080 _rej.rej_info = (uint_t)_class; 2081 } else { 2082 _rej.rej_type = SGS_REJ_STR; 2083 _rej.rej_str = elf_errmsg(-1); 2084 } 2085 _rej.rej_name = name; 2086 DBG_CALL(Dbg_file_rejected(ofl->ofl_lml, &_rej, 2087 ld_targ.t_m.m_mach)); 2088 if (rej->rej_type == 0) { 2089 *rej = _rej; 2090 rej->rej_name = strdup(_rej.rej_name); 2091 } 2092 return (NULL); 2093 } 2094 2095 /* 2096 * Determine if we've already come across this file. 2097 */ 2098 if (!(flags & FLG_IF_EXTRACT)) { 2099 List *lst; 2100 2101 if (ehdr->e_type == ET_REL) 2102 lst = &ofl->ofl_objs; 2103 else 2104 lst = &ofl->ofl_sos; 2105 2106 /* 2107 * Traverse the appropriate file list and determine if 2108 * a dev/inode match is found. 2109 */ 2110 for (LIST_TRAVERSE(lst, lnp, ifl)) { 2111 /* 2112 * Ifl_desc generated via -Nneed, therefore no 2113 * actual file behind it. 2114 */ 2115 if (ifl->ifl_flags & FLG_IF_NEEDSTR) 2116 continue; 2117 2118 if ((ifl->ifl_stino != status.st_ino) || 2119 (ifl->ifl_stdev != status.st_dev)) 2120 continue; 2121 2122 /* 2123 * Disregard (skip) this image. 2124 */ 2125 DBG_CALL(Dbg_file_skip(ofl->ofl_lml, 2126 ifl->ifl_name, name)); 2127 (void) elf_end(elf); 2128 2129 /* 2130 * If the file was explicitly defined on the 2131 * command line (this is always the case for 2132 * relocatable objects, and is true for shared 2133 * objects when they weren't specified via -l or 2134 * were dragged in as an implicit dependency), 2135 * then warn the user. 2136 */ 2137 if ((flags & FLG_IF_CMDLINE) || 2138 (ifl->ifl_flags & FLG_IF_CMDLINE)) { 2139 const char *errmsg; 2140 2141 /* 2142 * Determine whether this is the same 2143 * file name as originally encountered 2144 * so as to provide the most 2145 * descriptive diagnostic. 2146 */ 2147 errmsg = 2148 (strcmp(name, ifl->ifl_name) == 0) ? 2149 MSG_INTL(MSG_FIL_MULINC_1) : 2150 MSG_INTL(MSG_FIL_MULINC_2); 2151 eprintf(ofl->ofl_lml, ERR_WARNING, 2152 errmsg, name, ifl->ifl_name); 2153 } 2154 return (ifl); 2155 } 2156 } 2157 2158 /* 2159 * At this point, we know we need the file. Establish an input 2160 * file descriptor and continue processing. 2161 */ 2162 ifl = ifl_setup(name, ehdr, elf, flags, ofl, rej); 2163 if ((ifl == 0) || (ifl == (Ifl_desc *)S_ERROR)) 2164 return (ifl); 2165 ifl->ifl_stdev = status.st_dev; 2166 ifl->ifl_stino = status.st_ino; 2167 2168 /* 2169 * If -zignore is in effect, mark this file as a potential 2170 * candidate (the files use isn't actually determined until 2171 * symbol resolution and relocation processing are completed). 2172 */ 2173 if (ofl->ofl_flags1 & FLG_OF1_IGNORE) 2174 ifl->ifl_flags |= FLG_IF_IGNORE; 2175 2176 switch (ehdr->e_type) { 2177 case ET_REL: 2178 (*ld_targ.t_mr.mr_mach_eflags)(ehdr, ofl); 2179 error = process_elf(ifl, elf, ofl); 2180 break; 2181 case ET_DYN: 2182 if ((ofl->ofl_flags & FLG_OF_STATIC) || 2183 !(ofl->ofl_flags & FLG_OF_DYNLIBS)) { 2184 eprintf(ofl->ofl_lml, ERR_FATAL, 2185 MSG_INTL(MSG_FIL_SOINSTAT), name); 2186 ofl->ofl_flags |= FLG_OF_FATAL; 2187 return (NULL); 2188 } 2189 2190 /* 2191 * Record any additional shared object information. 2192 * If no soname is specified (eg. this file was 2193 * derived from a explicit filename declaration on the 2194 * command line, ie. bar.so) use the pathname. 2195 * This entry may be overridden if the files dynamic 2196 * section specifies an DT_SONAME value. 2197 */ 2198 if (soname == NULL) 2199 ifl->ifl_soname = ifl->ifl_name; 2200 else 2201 ifl->ifl_soname = soname; 2202 2203 /* 2204 * If direct bindings, lazy loading, or group 2205 * permissions need to be established, mark this object. 2206 */ 2207 if (ofl->ofl_flags1 & FLG_OF1_ZDIRECT) 2208 ifl->ifl_flags |= FLG_IF_DIRECT; 2209 if (ofl->ofl_flags1 & FLG_OF1_LAZYLD) 2210 ifl->ifl_flags |= FLG_IF_LAZYLD; 2211 if (ofl->ofl_flags1 & FLG_OF1_GRPPRM) 2212 ifl->ifl_flags |= FLG_IF_GRPPRM; 2213 error = process_elf(ifl, elf, ofl); 2214 2215 /* 2216 * At this point we know if this file will be 2217 * lazyloaded, or whether bindings to it must be direct. 2218 * In either case, a syminfo section is required. 2219 */ 2220 if (ifl->ifl_flags & (FLG_IF_LAZYLD | FLG_IF_DIRECT)) 2221 ofl->ofl_flags |= FLG_OF_SYMINFO; 2222 2223 break; 2224 default: 2225 (void) elf_errno(); 2226 _rej.rej_type = SGS_REJ_UNKFILE; 2227 _rej.rej_name = name; 2228 DBG_CALL(Dbg_file_rejected(ofl->ofl_lml, &_rej, 2229 ld_targ.t_m.m_mach)); 2230 if (rej->rej_type == 0) { 2231 *rej = _rej; 2232 rej->rej_name = strdup(_rej.rej_name); 2233 } 2234 return (NULL); 2235 } 2236 break; 2237 default: 2238 (void) elf_errno(); 2239 _rej.rej_type = SGS_REJ_UNKFILE; 2240 _rej.rej_name = name; 2241 DBG_CALL(Dbg_file_rejected(ofl->ofl_lml, &_rej, 2242 ld_targ.t_m.m_mach)); 2243 if (rej->rej_type == 0) { 2244 *rej = _rej; 2245 rej->rej_name = strdup(_rej.rej_name); 2246 } 2247 return (NULL); 2248 } 2249 if ((error == 0) || (error == S_ERROR)) 2250 return ((Ifl_desc *)error); 2251 else 2252 return (ifl); 2253 } 2254 2255 /* 2256 * Having successfully opened a file, set up the necessary elf structures to 2257 * process it further. This small section of processing is slightly different 2258 * from the elf initialization required to process a relocatable object from an 2259 * archive (see libs.c: ld_process_archive()). 2260 */ 2261 Ifl_desc * 2262 ld_process_open(const char *opath, const char *ofile, int *fd, Ofl_desc *ofl, 2263 Word flags, Rej_desc *rej) 2264 { 2265 Elf *elf; 2266 const char *npath = opath; 2267 const char *nfile = ofile; 2268 2269 if ((elf = elf_begin(*fd, ELF_C_READ, NULL)) == NULL) { 2270 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_BEGIN), npath); 2271 ofl->ofl_flags |= FLG_OF_FATAL; 2272 return (NULL); 2273 } 2274 2275 /* 2276 * Determine whether the support library wishes to process this open. 2277 * The support library may return: 2278 * . a different ELF descriptor (in which case they should have 2279 * closed the original) 2280 * . a different file descriptor (in which case they should have 2281 * closed the original) 2282 * . a different path and file name (presumably associated with 2283 * a different file descriptor) 2284 * 2285 * A file descriptor of -1, or and ELF descriptor of zero indicates 2286 * the file should be ignored. 2287 */ 2288 ld_sup_open(ofl, &npath, &nfile, fd, flags, &elf, NULL, 0, 2289 elf_kind(elf)); 2290 2291 if ((*fd == -1) || (elf == NULL)) 2292 return (NULL); 2293 2294 return (ld_process_ifl(npath, nfile, *fd, elf, flags, ofl, rej)); 2295 } 2296 2297 /* 2298 * Having successfully mapped a file, set up the necessary elf structures to 2299 * process it further. This routine is patterned after ld_process_open() and 2300 * is only called by ld.so.1(1) to process a relocatable object. 2301 */ 2302 Ifl_desc * 2303 ld_process_mem(const char *path, const char *file, char *addr, size_t size, 2304 Ofl_desc *ofl, Rej_desc *rej) 2305 { 2306 Elf *elf; 2307 2308 if ((elf = elf_memory(addr, size)) == NULL) { 2309 eprintf(ofl->ofl_lml, ERR_ELF, MSG_INTL(MSG_ELF_MEMORY), path); 2310 ofl->ofl_flags |= FLG_OF_FATAL; 2311 return (0); 2312 } 2313 2314 return (ld_process_ifl(path, file, 0, elf, 0, ofl, rej)); 2315 } 2316 2317 /* 2318 * Process a required library (i.e. the dependency of a shared object). 2319 * Combine the directory and filename, check the resultant path size, and try 2320 * opening the pathname. 2321 */ 2322 static Ifl_desc * 2323 process_req_lib(Sdf_desc *sdf, const char *dir, const char *file, 2324 Ofl_desc *ofl, Rej_desc *rej) 2325 { 2326 size_t dlen, plen; 2327 int fd; 2328 char path[PATH_MAX]; 2329 const char *_dir = dir; 2330 2331 /* 2332 * Determine the sizes of the directory and filename to insure we don't 2333 * exceed our buffer. 2334 */ 2335 if ((dlen = strlen(dir)) == 0) { 2336 _dir = MSG_ORIG(MSG_STR_DOT); 2337 dlen = 1; 2338 } 2339 dlen++; 2340 plen = dlen + strlen(file) + 1; 2341 if (plen > PATH_MAX) { 2342 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_FIL_PTHTOLONG), 2343 _dir, file); 2344 ofl->ofl_flags |= FLG_OF_FATAL; 2345 return (0); 2346 } 2347 2348 /* 2349 * Build the entire pathname and try and open the file. 2350 */ 2351 (void) strcpy(path, _dir); 2352 (void) strcat(path, MSG_ORIG(MSG_STR_SLASH)); 2353 (void) strcat(path, file); 2354 DBG_CALL(Dbg_libs_req(ofl->ofl_lml, sdf->sdf_name, 2355 sdf->sdf_rfile, path)); 2356 2357 if ((fd = open(path, O_RDONLY)) == -1) 2358 return (0); 2359 else { 2360 Ifl_desc *ifl; 2361 char *_path; 2362 2363 if ((_path = libld_malloc(strlen(path) + 1)) == 0) 2364 return ((Ifl_desc *)S_ERROR); 2365 (void) strcpy(_path, path); 2366 ifl = ld_process_open(_path, &_path[dlen], &fd, ofl, 0, rej); 2367 if (fd != -1) 2368 (void) close(fd); 2369 return (ifl); 2370 } 2371 } 2372 2373 /* 2374 * Finish any library processing. Walk the list of so's that have been listed 2375 * as "included" by shared objects we have previously processed. Examine them, 2376 * without adding them as explicit dependents of this program, in order to 2377 * complete our symbol definition process. The search path rules are: 2378 * 2379 * o use any user supplied paths, i.e. LD_LIBRARY_PATH and -L, then 2380 * 2381 * o use any RPATH defined within the parent shared object, then 2382 * 2383 * o use the default directories, i.e. LIBPATH or -YP. 2384 */ 2385 uintptr_t 2386 ld_finish_libs(Ofl_desc *ofl) 2387 { 2388 Listnode *lnp1; 2389 Sdf_desc *sdf; 2390 Rej_desc rej = { 0 }; 2391 2392 /* 2393 * Make sure we are back in dynamic mode. 2394 */ 2395 ofl->ofl_flags |= FLG_OF_DYNLIBS; 2396 2397 for (LIST_TRAVERSE(&ofl->ofl_soneed, lnp1, sdf)) { 2398 Listnode *lnp2; 2399 char *path, *slash = NULL; 2400 int fd; 2401 Ifl_desc *ifl; 2402 char *file = (char *)sdf->sdf_name; 2403 2404 /* 2405 * See if this file has already been processed. At the time 2406 * this implicit dependency was determined there may still have 2407 * been more explicit dependencies to process. Note, if we ever 2408 * do parse the command line three times we would be able to 2409 * do all this checking when processing the dynamic section. 2410 */ 2411 if (sdf->sdf_file) 2412 continue; 2413 2414 for (LIST_TRAVERSE(&ofl->ofl_sos, lnp2, ifl)) { 2415 if (!(ifl->ifl_flags & FLG_IF_NEEDSTR) && 2416 (strcmp(file, ifl->ifl_soname) == 0)) { 2417 sdf->sdf_file = ifl; 2418 break; 2419 } 2420 } 2421 if (sdf->sdf_file) 2422 continue; 2423 2424 /* 2425 * If the current path name element embeds a "/", then it's to 2426 * be taken "as is", with no searching involved. Process all 2427 * "/" occurrences, so that we can deduce the base file name. 2428 */ 2429 for (path = file; *path; path++) { 2430 if (*path == '/') 2431 slash = path; 2432 } 2433 if (slash) { 2434 DBG_CALL(Dbg_libs_req(ofl->ofl_lml, sdf->sdf_name, 2435 sdf->sdf_rfile, file)); 2436 if ((fd = open(file, O_RDONLY)) == -1) { 2437 eprintf(ofl->ofl_lml, ERR_WARNING, 2438 MSG_INTL(MSG_FIL_NOTFOUND), file, 2439 sdf->sdf_rfile); 2440 } else { 2441 Rej_desc _rej = { 0 }; 2442 2443 ifl = ld_process_open(file, ++slash, &fd, ofl, 2444 0, &_rej); 2445 if (fd != -1) 2446 (void) close(fd); 2447 if (ifl == (Ifl_desc *)S_ERROR) 2448 return (S_ERROR); 2449 2450 if (_rej.rej_type) { 2451 Conv_reject_desc_buf_t rej_buf; 2452 2453 eprintf(ofl->ofl_lml, ERR_WARNING, 2454 MSG_INTL(reject[_rej.rej_type]), 2455 _rej.rej_name ? rej.rej_name : 2456 MSG_INTL(MSG_STR_UNKNOWN), 2457 conv_reject_desc(&_rej, &rej_buf, 2458 ld_targ.t_m.m_mach)); 2459 } else 2460 sdf->sdf_file = ifl; 2461 } 2462 continue; 2463 } 2464 2465 /* 2466 * Now search for this file in any user defined directories. 2467 */ 2468 for (LIST_TRAVERSE(&ofl->ofl_ulibdirs, lnp2, path)) { 2469 Rej_desc _rej = { 0 }; 2470 2471 ifl = process_req_lib(sdf, path, file, ofl, &_rej); 2472 if (ifl == (Ifl_desc *)S_ERROR) { 2473 return (S_ERROR); 2474 } 2475 if (_rej.rej_type) { 2476 if (rej.rej_type == 0) { 2477 rej = _rej; 2478 rej.rej_name = strdup(_rej.rej_name); 2479 } 2480 } 2481 if (ifl) { 2482 sdf->sdf_file = ifl; 2483 break; 2484 } 2485 } 2486 if (sdf->sdf_file) 2487 continue; 2488 2489 /* 2490 * Next use the local rules defined within the parent shared 2491 * object. 2492 */ 2493 if (sdf->sdf_rpath != NULL) { 2494 char *rpath, *next; 2495 2496 rpath = libld_malloc(strlen(sdf->sdf_rpath) + 1); 2497 if (rpath == 0) 2498 return (S_ERROR); 2499 (void) strcpy(rpath, sdf->sdf_rpath); 2500 DBG_CALL(Dbg_libs_path(ofl->ofl_lml, rpath, 2501 LA_SER_RUNPATH, sdf->sdf_rfile)); 2502 if ((path = strtok_r(rpath, 2503 MSG_ORIG(MSG_STR_COLON), &next)) != NULL) { 2504 do { 2505 Rej_desc _rej = { 0 }; 2506 2507 path = expand(sdf->sdf_rfile, path, 2508 &next); 2509 2510 ifl = process_req_lib(sdf, path, 2511 file, ofl, &_rej); 2512 if (ifl == (Ifl_desc *)S_ERROR) { 2513 return (S_ERROR); 2514 } 2515 if ((_rej.rej_type) && 2516 (rej.rej_type == 0)) { 2517 rej = _rej; 2518 rej.rej_name = 2519 strdup(_rej.rej_name); 2520 } 2521 if (ifl) { 2522 sdf->sdf_file = ifl; 2523 break; 2524 } 2525 } while ((path = strtok_r(NULL, 2526 MSG_ORIG(MSG_STR_COLON), &next)) != NULL); 2527 } 2528 } 2529 if (sdf->sdf_file) 2530 continue; 2531 2532 /* 2533 * Finally try the default library search directories. 2534 */ 2535 for (LIST_TRAVERSE(&ofl->ofl_dlibdirs, lnp2, path)) { 2536 Rej_desc _rej = { 0 }; 2537 2538 ifl = process_req_lib(sdf, path, file, ofl, &rej); 2539 if (ifl == (Ifl_desc *)S_ERROR) { 2540 return (S_ERROR); 2541 } 2542 if (_rej.rej_type) { 2543 if (rej.rej_type == 0) { 2544 rej = _rej; 2545 rej.rej_name = strdup(_rej.rej_name); 2546 } 2547 } 2548 if (ifl) { 2549 sdf->sdf_file = ifl; 2550 break; 2551 } 2552 } 2553 if (sdf->sdf_file) 2554 continue; 2555 2556 /* 2557 * If we've got this far we haven't found the shared object. 2558 * If an object was found, but was rejected for some reason, 2559 * print a diagnostic to that effect, otherwise generate a 2560 * generic "not found" diagnostic. 2561 */ 2562 if (rej.rej_type) { 2563 Conv_reject_desc_buf_t rej_buf; 2564 2565 eprintf(ofl->ofl_lml, ERR_WARNING, 2566 MSG_INTL(reject[rej.rej_type]), 2567 rej.rej_name ? rej.rej_name : 2568 MSG_INTL(MSG_STR_UNKNOWN), 2569 conv_reject_desc(&rej, &rej_buf, 2570 ld_targ.t_m.m_mach)); 2571 } else { 2572 eprintf(ofl->ofl_lml, ERR_WARNING, 2573 MSG_INTL(MSG_FIL_NOTFOUND), file, sdf->sdf_rfile); 2574 } 2575 } 2576 2577 /* 2578 * Finally, now that all objects have been input, make sure any version 2579 * requirements have been met. 2580 */ 2581 return (ld_vers_verify(ofl)); 2582 } 2583