/[gentoo-projects]/pax-utils/scanelf.c
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Revision 1.209 Revision 1.229
1/* 1/*
2 * Copyright 2003-2007 Gentoo Foundation 2 * Copyright 2003-2007 Gentoo Foundation
3 * Distributed under the terms of the GNU General Public License v2 3 * Distributed under the terms of the GNU General Public License v2
4 * $Header: /var/cvsroot/gentoo-projects/pax-utils/Attic/scanelf.c,v 1.209 2009/03/15 08:53:29 vapier Exp $ 4 * $Header: /var/cvsroot/gentoo-projects/pax-utils/Attic/scanelf.c,v 1.229 2011/09/27 19:29:19 vapier Exp $
5 * 5 *
6 * Copyright 2003-2007 Ned Ludd - <solar@gentoo.org> 6 * Copyright 2003-2007 Ned Ludd - <solar@gentoo.org>
7 * Copyright 2004-2007 Mike Frysinger - <vapier@gentoo.org> 7 * Copyright 2004-2007 Mike Frysinger - <vapier@gentoo.org>
8 */ 8 */
9 9
10static const char *rcsid = "$Id: scanelf.c,v 1.209 2009/03/15 08:53:29 vapier Exp $"; 10static const char *rcsid = "$Id: scanelf.c,v 1.229 2011/09/27 19:29:19 vapier Exp $";
11const char * const argv0 = "scanelf"; 11const char argv0[] = "scanelf";
12 12
13#include "paxinc.h" 13#include "paxinc.h"
14 14
15#define IS_MODIFIER(c) (c == '%' || c == '#' || c == '+') 15#define IS_MODIFIER(c) (c == '%' || c == '#' || c == '+')
16 16
17/* prototypes */ 17/* prototypes */
18static int file_matches_list(const char *filename, char **matchlist); 18static int file_matches_list(const char *filename, char **matchlist);
19static int scanelf_elfobj(elfobj *elf);
20static int scanelf_elf(const char *filename, int fd, size_t len);
21static int scanelf_archive(const char *filename, int fd, size_t len);
22static int scanelf_file(const char *filename, const struct stat *st_cache);
23static int scanelf_dir(const char *path);
24static void scanelf_ldpath(void);
25static void scanelf_envpath(void);
26static void usage(int status);
27static char **get_split_env(const char *envvar);
28static void parseenv(void);
29static int parseargs(int argc, char *argv[]);
30static int rematch(const char *regex, const char *match, int cflags);
31 19
32/* variables to control behavior */ 20/* variables to control behavior */
33static char match_etypes[126] = ""; 21static char *match_etypes = NULL;
34static char *ldpaths[256]; 22static array_t _ldpaths = array_init_decl, *ldpaths = &_ldpaths;
35static char scan_ldpath = 0; 23static char scan_ldpath = 0;
36static char scan_envpath = 0; 24static char scan_envpath = 0;
37static char scan_symlink = 1; 25static char scan_symlink = 1;
38static char scan_archives = 0; 26static char scan_archives = 0;
39static char dir_recurse = 0; 27static char dir_recurse = 0;
57static char be_verbose = 0; 45static char be_verbose = 0;
58static char be_wewy_wewy_quiet = 0; 46static char be_wewy_wewy_quiet = 0;
59static char be_semi_verbose = 0; 47static char be_semi_verbose = 0;
60static char *find_sym = NULL; 48static char *find_sym = NULL;
61static char *find_lib = NULL; 49static char *find_lib = NULL;
50static array_t _find_lib_arr = array_init_decl, *find_lib_arr = &_find_lib_arr;
62static char *find_section = NULL; 51static char *find_section = NULL;
52static array_t _find_section_arr = array_init_decl, *find_section_arr = &_find_section_arr;
63static char *out_format = NULL; 53static char *out_format = NULL;
64static char *search_path = NULL; 54static char *search_path = NULL;
65static char fix_elf = 0; 55static char fix_elf = 0;
66static char g_match = 0; 56static char g_match = 0;
67static char use_ldcache = 0; 57static char use_ldcache = 0;
68 58
69static char **qa_textrels = NULL; 59static char **qa_textrels = NULL;
70static char **qa_execstack = NULL; 60static char **qa_execstack = NULL;
71static char **qa_wx_load = NULL; 61static char **qa_wx_load = NULL;
62static char *root;
72 63
73static int match_bits = 0; 64static int match_bits = 0;
74static unsigned int match_perms = 0; 65static unsigned int match_perms = 0;
75static caddr_t ldcache = 0; 66static void *ldcache = NULL;
76static size_t ldcache_size = 0; 67static size_t ldcache_size = 0;
77static unsigned long setpax = 0UL; 68static unsigned long setpax = 0UL;
78 69
79static int has_objdump = 0; 70static int has_objdump = 0;
80 71
128 119
129/* sub-funcs for scanelf_file() */ 120/* sub-funcs for scanelf_file() */
130static void scanelf_file_get_symtabs(elfobj *elf, void **sym, void **tab) 121static void scanelf_file_get_symtabs(elfobj *elf, void **sym, void **tab)
131{ 122{
132 /* find the best SHT_DYNSYM and SHT_STRTAB sections */ 123 /* find the best SHT_DYNSYM and SHT_STRTAB sections */
124
125 /* debug sections */
126 void *symtab = elf_findsecbyname(elf, ".symtab");
127 void *strtab = elf_findsecbyname(elf, ".strtab");
128 /* runtime sections */
129 void *dynsym = elf_findsecbyname(elf, ".dynsym");
130 void *dynstr = elf_findsecbyname(elf, ".dynstr");
131
133#define GET_SYMTABS(B) \ 132#define GET_SYMTABS(B) \
134 if (elf->elf_class == ELFCLASS ## B) { \ 133 if (elf->elf_class == ELFCLASS ## B) { \
135 Elf ## B ## _Shdr *symtab, *strtab, *dynsym, *dynstr; \
136 /* debug sections */ \
137 symtab = SHDR ## B (elf_findsecbyname(elf, ".symtab")); \
138 strtab = SHDR ## B (elf_findsecbyname(elf, ".strtab")); \
139 /* runtime sections */ \
140 dynsym = SHDR ## B (elf_findsecbyname(elf, ".dynsym")); \
141 dynstr = SHDR ## B (elf_findsecbyname(elf, ".dynstr")); \
142 if (symtab && dynsym) { \ 134 if (symtab && dynsym) { \
135 Elf ## B ## _Shdr *esymtab = symtab; \
136 Elf ## B ## _Shdr *edynsym = dynsym; \
143 *sym = (void*)((EGET(symtab->sh_size) > EGET(dynsym->sh_size)) ? symtab : dynsym); \ 137 *sym = (EGET(esymtab->sh_size) > EGET(edynsym->sh_size)) ? symtab : dynsym; \
144 } else { \ 138 } else \
145 *sym = (void*)(symtab ? symtab : dynsym); \ 139 *sym = symtab ? symtab : dynsym; \
146 } \
147 if (strtab && dynstr) { \ 140 if (strtab && dynstr) { \
141 Elf ## B ## _Shdr *estrtab = strtab; \
142 Elf ## B ## _Shdr *edynstr = dynstr; \
148 *tab = (void*)((EGET(strtab->sh_size) > EGET(dynstr->sh_size)) ? strtab : dynstr); \ 143 *tab = (EGET(estrtab->sh_size) > EGET(edynstr->sh_size)) ? strtab : dynstr; \
149 } else { \ 144 } else \
150 *tab = (void*)(strtab ? strtab : dynstr); \ 145 *tab = strtab ? strtab : dynstr; \
151 } \
152 } 146 }
153 GET_SYMTABS(32) 147 GET_SYMTABS(32)
154 GET_SYMTABS(64) 148 GET_SYMTABS(64)
155} 149}
156 150
280 } else if (elf->shdr != NULL) { \ 274 } else if (elf->shdr != NULL) { \
281 /* no program headers which means this is prob an object file */ \ 275 /* no program headers which means this is prob an object file */ \
282 Elf ## B ## _Shdr *shdr = SHDR ## B (elf->shdr); \ 276 Elf ## B ## _Shdr *shdr = SHDR ## B (elf->shdr); \
283 Elf ## B ## _Shdr *strtbl = shdr + EGET(ehdr->e_shstrndx); \ 277 Elf ## B ## _Shdr *strtbl = shdr + EGET(ehdr->e_shstrndx); \
284 char *str; \ 278 char *str; \
285 if ((void*)strtbl > (void*)elf->data_end) \ 279 if ((void*)strtbl > elf->data_end) \
286 goto skip_this_shdr##B; \ 280 goto skip_this_shdr##B; \
287 check_flags = SHF_WRITE|SHF_EXECINSTR; \ 281 check_flags = SHF_WRITE|SHF_EXECINSTR; \
288 for (i = 0; i < EGET(ehdr->e_shnum); ++i) { \ 282 for (i = 0; i < EGET(ehdr->e_shnum); ++i) { \
289 if (EGET(shdr[i].sh_type) != SHT_PROGBITS) continue; \ 283 if (EGET(shdr[i].sh_type) != SHT_PROGBITS) continue; \
290 offset = EGET(strtbl->sh_offset) + EGET(shdr[i].sh_name); \ 284 offset = EGET(strtbl->sh_offset) + EGET(shdr[i].sh_name); \
345 Elf ## B ## _Off offset; \ 339 Elf ## B ## _Off offset; \
346 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 340 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
347 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \ 341 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
348 offset = EGET(phdr[i].p_offset); \ 342 offset = EGET(phdr[i].p_offset); \
349 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 343 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
350 dyn = DYN ## B (elf->data + offset); \ 344 dyn = DYN ## B (elf->vdata + offset); \
351 while (EGET(dyn->d_tag) != DT_NULL) { \ 345 while (EGET(dyn->d_tag) != DT_NULL) { \
352 if (EGET(dyn->d_tag) == DT_TEXTREL) { /*dyn->d_tag != DT_FLAGS)*/ \ 346 if (EGET(dyn->d_tag) == DT_TEXTREL) { /*dyn->d_tag != DT_FLAGS)*/ \
353 *found_textrel = 1; \ 347 *found_textrel = 1; \
354 /*if (dyn->d_un.d_val & DF_TEXTREL)*/ \ 348 /*if (dyn->d_un.d_val & DF_TEXTREL)*/ \
355 return (be_wewy_wewy_quiet ? NULL : ret); \ 349 return (be_wewy_wewy_quiet ? NULL : ret); \
400 Elf ## B ## _Rela *rela; \ 394 Elf ## B ## _Rela *rela; \
401 /* search the section headers for relocations */ \ 395 /* search the section headers for relocations */ \
402 for (s = 0; s < EGET(ehdr->e_shnum); ++s) { \ 396 for (s = 0; s < EGET(ehdr->e_shnum); ++s) { \
403 uint32_t sh_type = EGET(shdr[s].sh_type); \ 397 uint32_t sh_type = EGET(shdr[s].sh_type); \
404 if (sh_type == SHT_REL) { \ 398 if (sh_type == SHT_REL) { \
405 rel = REL ## B (elf->data + EGET(shdr[s].sh_offset)); \ 399 rel = REL ## B (elf->vdata + EGET(shdr[s].sh_offset)); \
406 rela = NULL; \ 400 rela = NULL; \
407 rmax = EGET(shdr[s].sh_size) / sizeof(*rel); \ 401 rmax = EGET(shdr[s].sh_size) / sizeof(*rel); \
408 } else if (sh_type == SHT_RELA) { \ 402 } else if (sh_type == SHT_RELA) { \
409 rel = NULL; \ 403 rel = NULL; \
410 rela = RELA ## B (elf->data + EGET(shdr[s].sh_offset)); \ 404 rela = RELA ## B (elf->vdata + EGET(shdr[s].sh_offset)); \
411 rmax = EGET(shdr[s].sh_size) / sizeof(*rela); \ 405 rmax = EGET(shdr[s].sh_size) / sizeof(*rela); \
412 } else \ 406 } else \
413 continue; \ 407 continue; \
414 /* now see if any of the relocs are in the .text */ \ 408 /* now see if any of the relocs are in the .text */ \
415 for (r = 0; r < rmax; ++r) { \ 409 for (r = 0; r < rmax; ++r) { \
430 if (r_offset < vaddr || r_offset >= vaddr + memsz) { \ 424 if (r_offset < vaddr || r_offset >= vaddr + memsz) { \
431 if (be_verbose <= 2) continue; \ 425 if (be_verbose <= 2) continue; \
432 } else \ 426 } else \
433 *found_textrels = 1; \ 427 *found_textrels = 1; \
434 /* locate this relocation symbol name */ \ 428 /* locate this relocation symbol name */ \
435 sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \ 429 sym = SYM ## B (elf->vdata + EGET(symtab->sh_offset)); \
436 if ((void*)sym > (void*)elf->data_end) { \ 430 if ((void*)sym > elf->data_end) { \
437 warn("%s: corrupt ELF symbol", elf->filename); \ 431 warn("%s: corrupt ELF symbol", elf->filename); \
438 continue; \ 432 continue; \
439 } \ 433 } \
440 sym_max = ELF ## B ## _R_SYM(r_info); \ 434 sym_max = ELF ## B ## _R_SYM(r_info); \
441 if (sym_max * EGET(symtab->sh_entsize) < symtab->sh_size) \ 435 if (sym_max * EGET(symtab->sh_entsize) < symtab->sh_size) \
444 sym = NULL; \ 438 sym = NULL; \
445 sym_max = EGET(symtab->sh_size) / EGET(symtab->sh_entsize); \ 439 sym_max = EGET(symtab->sh_size) / EGET(symtab->sh_entsize); \
446 /* show the raw details about this reloc */ \ 440 /* show the raw details about this reloc */ \
447 printf(" %s: ", elf->base_filename); \ 441 printf(" %s: ", elf->base_filename); \
448 if (sym && sym->st_name) \ 442 if (sym && sym->st_name) \
449 printf("%s", (char*)(elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name))); \ 443 printf("%s", elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name)); \
450 else \ 444 else \
451 printf("(memory/data?)"); \ 445 printf("(memory/data?)"); \
452 printf(" [0x%lX]", (unsigned long)r_offset); \ 446 printf(" [0x%lX]", (unsigned long)r_offset); \
453 /* now try to find the closest symbol that this rel is probably in */ \ 447 /* now try to find the closest symbol that this rel is probably in */ \
454 sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \ 448 sym = SYM ## B (elf->vdata + EGET(symtab->sh_offset)); \
455 func = NULL; \ 449 func = NULL; \
456 offset_tmp = 0; \ 450 offset_tmp = 0; \
457 while (sym_max--) { \ 451 while (sym_max--) { \
458 if (EGET(sym->st_value) < r_offset && EGET(sym->st_value) > offset_tmp) { \ 452 if (EGET(sym->st_value) < r_offset && EGET(sym->st_value) > offset_tmp) { \
459 func = sym; \ 453 func = sym; \
501 warnf("ELF %s has TEXTREL markings but doesnt appear to have any real TEXTREL's !?", elf->filename); 495 warnf("ELF %s has TEXTREL markings but doesnt appear to have any real TEXTREL's !?", elf->filename);
502 496
503 return NULL; 497 return NULL;
504} 498}
505 499
506static void rpath_security_checks(elfobj *, char *, const char *);
507static void rpath_security_checks(elfobj *elf, char *item, const char *dt_type) 500static void rpath_security_checks(elfobj *elf, char *item, const char *dt_type)
508{ 501{
509 struct stat st; 502 struct stat st;
510 switch (*item) { 503 switch (*item) {
511 case '/': break; 504 case '/': break;
527 break; 520 break;
528 } 521 }
529} 522}
530static void scanelf_file_rpath(elfobj *elf, char *found_rpath, char **ret, size_t *ret_len) 523static void scanelf_file_rpath(elfobj *elf, char *found_rpath, char **ret, size_t *ret_len)
531{ 524{
532 unsigned long i, s; 525 unsigned long i;
533 char *rpath, *runpath, **r; 526 char *rpath, *runpath, **r;
534 void *strtbl_void; 527 void *strtbl_void;
535 528
536 if (!show_rpath) return; 529 if (!show_rpath) return;
537 530
552 /* Just scan dynamic headers */ \ 545 /* Just scan dynamic headers */ \
553 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \ 546 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
554 offset = EGET(phdr[i].p_offset); \ 547 offset = EGET(phdr[i].p_offset); \
555 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 548 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
556 /* Just scan dynamic RPATH/RUNPATH headers */ \ 549 /* Just scan dynamic RPATH/RUNPATH headers */ \
557 dyn = DYN ## B (elf->data + offset); \ 550 dyn = DYN ## B (elf->vdata + offset); \
558 while ((word=EGET(dyn->d_tag)) != DT_NULL) { \ 551 while ((word=EGET(dyn->d_tag)) != DT_NULL) { \
559 if (word == DT_RPATH) { \ 552 if (word == DT_RPATH) { \
560 r = &rpath; \ 553 r = &rpath; \
561 } else if (word == DT_RUNPATH) { \ 554 } else if (word == DT_RUNPATH) { \
562 r = &runpath; \ 555 r = &runpath; \
566 } \ 559 } \
567 /* Verify the memory is somewhat sane */ \ 560 /* Verify the memory is somewhat sane */ \
568 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \ 561 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
569 if (offset < (Elf ## B ## _Off)elf->len) { \ 562 if (offset < (Elf ## B ## _Off)elf->len) { \
570 if (*r) warn("ELF has multiple %s's !?", get_elfdtype(word)); \ 563 if (*r) warn("ELF has multiple %s's !?", get_elfdtype(word)); \
571 *r = (char*)(elf->data + offset); \ 564 *r = elf->data + offset; \
572 /* cache the length in case we need to nuke this section later on */ \ 565 /* cache the length in case we need to nuke this section later on */ \
573 if (fix_elf) \ 566 if (fix_elf) \
574 offset = strlen(*r); \ 567 offset = strlen(*r); \
575 /* If quiet, don't output paths in ld.so.conf */ \ 568 /* If quiet, don't output paths in ld.so.conf */ \
576 if (be_quiet) { \ 569 if (be_quiet) { \
582 /* scan each path in : delimited list */ \ 575 /* scan each path in : delimited list */ \
583 while (start) { \ 576 while (start) { \
584 rpath_security_checks(elf, start, get_elfdtype(word)); \ 577 rpath_security_checks(elf, start, get_elfdtype(word)); \
585 end = strchr(start, ':'); \ 578 end = strchr(start, ':'); \
586 len = (end ? abs(end - start) : strlen(start)); \ 579 len = (end ? abs(end - start) : strlen(start)); \
587 if (use_ldcache) \ 580 if (use_ldcache) { \
588 for (s = 0; ldpaths[s]; ++s) \ 581 size_t n; \
582 const char *ldpath; \
583 array_for_each(ldpaths, n, ldpath) \
589 if (!strncmp(ldpaths[s], start, len) && !ldpaths[s][len]) { \ 584 if (!strncmp(ldpath, start, len) && !ldpath[len]) { \
590 *r = end; \ 585 *r = end; \
591 /* corner case ... if RPATH reads "/usr/lib:", we want \ 586 /* corner case ... if RPATH reads "/usr/lib:", we want \
592 * to show ':' rather than '' */ \ 587 * to show ':' rather than '' */ \
593 if (end && end[1] != '\0') \ 588 if (end && end[1] != '\0') \
594 (*r)++; \ 589 (*r)++; \
595 break; \ 590 break; \
596 } \ 591 } \
592 } \
597 if (!*r || !end) \ 593 if (!*r || !end) \
598 break; \ 594 break; \
599 else \ 595 else \
600 start = start + len + 1; \ 596 start = start + len + 1; \
601 } \ 597 } \
686#define FLAG_S390_LIB64 0x0400 682#define FLAG_S390_LIB64 0x0400
687#define FLAG_POWERPC_LIB64 0x0500 683#define FLAG_POWERPC_LIB64 0x0500
688#define FLAG_MIPS64_LIBN32 0x0600 684#define FLAG_MIPS64_LIBN32 0x0600
689#define FLAG_MIPS64_LIBN64 0x0700 685#define FLAG_MIPS64_LIBN64 0x0700
690 686
691static char *lookup_cache_lib(elfobj *, char *);
692
693#if defined(__GLIBC__) || defined(__UCLIBC__) 687#if defined(__GLIBC__) || defined(__UCLIBC__)
694 688
695static char *lookup_cache_lib(elfobj *elf, char *fname) 689static char *lookup_cache_lib(elfobj *elf, char *fname)
696{ 690{
697 int fd = 0; 691 int fd;
698 char *strs; 692 char *strs;
699 static char buf[__PAX_UTILS_PATH_MAX] = ""; 693 static char buf[__PAX_UTILS_PATH_MAX] = "";
700 const char *cachefile = "/etc/ld.so.cache"; 694 const char cachefile[] = "/etc/ld.so.cache";
701 struct stat st; 695 struct stat st;
702 696
703 typedef struct { 697 typedef struct {
704 char magic[LDSO_CACHE_MAGIC_LEN]; 698 char magic[LDSO_CACHE_MAGIC_LEN];
705 char version[LDSO_CACHE_VER_LEN]; 699 char version[LDSO_CACHE_VER_LEN];
715 libentry_t *libent; 709 libentry_t *libent;
716 710
717 if (fname == NULL) 711 if (fname == NULL)
718 return NULL; 712 return NULL;
719 713
720 if (ldcache == 0) { 714 if (ldcache == NULL) {
721 if (stat(cachefile, &st) || (fd = open(cachefile, O_RDONLY)) == -1) 715 if (stat(cachefile, &st))
716 return NULL;
717
718 fd = open(cachefile, O_RDONLY);
719 if (fd == -1)
722 return NULL; 720 return NULL;
723 721
724 /* cache these values so we only map/unmap the cache file once */ 722 /* cache these values so we only map/unmap the cache file once */
725 ldcache_size = st.st_size; 723 ldcache_size = st.st_size;
726 ldcache = mmap(0, ldcache_size, PROT_READ, MAP_SHARED, fd, 0); 724 header = ldcache = mmap(0, ldcache_size, PROT_READ, MAP_SHARED, fd, 0);
727
728 close(fd); 725 close(fd);
729 726
730 if (ldcache == MAP_FAILED) { 727 if (ldcache == MAP_FAILED) {
731 ldcache = 0; 728 ldcache = NULL;
732 return NULL; 729 return NULL;
733 } 730 }
734 731
735 if (memcmp(((header_t *) ldcache)->magic, LDSO_CACHE_MAGIC, LDSO_CACHE_MAGIC_LEN)) 732 if (memcmp(header->magic, LDSO_CACHE_MAGIC, LDSO_CACHE_MAGIC_LEN) ||
733 memcmp(header->version, LDSO_CACHE_VER, LDSO_CACHE_VER_LEN))
734 {
735 munmap(ldcache, ldcache_size);
736 ldcache = NULL;
736 return NULL; 737 return NULL;
737 if (memcmp (((header_t *) ldcache)->version, LDSO_CACHE_VER, LDSO_CACHE_VER_LEN))
738 return NULL;
739 } 738 }
739 } else
740 header = ldcache;
740 741
741 header = (header_t *) ldcache;
742 libent = (libentry_t *) (ldcache + sizeof(header_t)); 742 libent = ldcache + sizeof(header_t);
743 strs = (char *) &libent[header->nlibs]; 743 strs = (char *) &libent[header->nlibs];
744 744
745 for (fd = 0; fd < header->nlibs; fd++) { 745 for (fd = 0; fd < header->nlibs; ++fd) {
746 /* this should be more fine grained, but for now we assume that 746 /* This should be more fine grained, but for now we assume that
747 * diff arches will not be cached together. and we ignore the 747 * diff arches will not be cached together, and we ignore the
748 * the different multilib mips cases. */ 748 * the different multilib mips cases.
749 */
749 if (elf->elf_class == ELFCLASS64 && !(libent[fd].flags & FLAG_REQUIRED_MASK)) 750 if (elf->elf_class == ELFCLASS64 && !(libent[fd].flags & FLAG_REQUIRED_MASK))
750 continue; 751 continue;
751 if (elf->elf_class == ELFCLASS32 && (libent[fd].flags & FLAG_REQUIRED_MASK)) 752 if (elf->elf_class == ELFCLASS32 && (libent[fd].flags & FLAG_REQUIRED_MASK))
752 continue; 753 continue;
753 754
754 if (strcmp(fname, strs + libent[fd].sooffset) != 0) 755 if (strcmp(fname, strs + libent[fd].sooffset) != 0)
755 continue; 756 continue;
757
758 /* Return first hit because that is how the ldso rolls */
756 strncpy(buf, strs + libent[fd].liboffset, sizeof(buf)); 759 strncpy(buf, strs + libent[fd].liboffset, sizeof(buf));
760 break;
757 } 761 }
762
758 return buf; 763 return buf;
759} 764}
765
760#elif defined(__NetBSD__) 766#elif defined(__NetBSD__)
761static char *lookup_cache_lib(elfobj *elf, char *fname) 767static char *lookup_cache_lib(elfobj *elf, char *fname)
762{ 768{
763 static char buf[__PAX_UTILS_PATH_MAX] = ""; 769 static char buf[__PAX_UTILS_PATH_MAX] = "";
764 static struct stat st; 770 static struct stat st;
765 771 size_t n;
766 char **ldpath; 772 char *ldpath;
767 for (ldpath = ldpaths; *ldpath != NULL; ldpath++) { 773
774 array_for_each(ldpath, n, ldpath) {
768 if ((unsigned) snprintf(buf, sizeof(buf), "%s/%s", *ldpath, fname) >= sizeof(buf)) 775 if ((unsigned) snprintf(buf, sizeof(buf), "%s/%s", ldpath, fname) >= sizeof(buf))
769 continue; /* if the pathname is too long, or something went wrong, ignore */ 776 continue; /* if the pathname is too long, or something went wrong, ignore */
770 777
771 if (stat(buf, &st) != 0) 778 if (stat(buf, &st) != 0)
772 continue; /* if the lib doesn't exist in *ldpath, look further */ 779 continue; /* if the lib doesn't exist in *ldpath, look further */
773 780
797 unsigned long i; 804 unsigned long i;
798 char *needed; 805 char *needed;
799 void *strtbl_void; 806 void *strtbl_void;
800 char *p; 807 char *p;
801 808
809 /*
810 * -n -> op==0 -> print all
811 * -N -> op==1 -> print requested
812 */
802 if ((op==0 && !show_needed) || (op==1 && !find_lib)) return NULL; 813 if ((op == 0 && !show_needed) || (op == 1 && !find_lib))
814 return NULL;
803 815
804 strtbl_void = elf_findsecbyname(elf, ".dynstr"); 816 strtbl_void = elf_findsecbyname(elf, ".dynstr");
805 817
806 if (elf->phdr && strtbl_void) { 818 if (elf->phdr && strtbl_void) {
807#define SHOW_NEEDED(B) \ 819#define SHOW_NEEDED(B) \
809 Elf ## B ## _Dyn *dyn; \ 821 Elf ## B ## _Dyn *dyn; \
810 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \ 822 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
811 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \ 823 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
812 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \ 824 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \
813 Elf ## B ## _Off offset; \ 825 Elf ## B ## _Off offset; \
826 size_t matched = 0; \
827 /* Walk all the program headers to find the PT_DYNAMIC */ \
814 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 828 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
815 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \ 829 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) \
830 continue; \
816 offset = EGET(phdr[i].p_offset); \ 831 offset = EGET(phdr[i].p_offset); \
817 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 832 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) \
833 continue; \
834 /* Walk all the dynamic tags to find NEEDED entries */ \
818 dyn = DYN ## B (elf->data + offset); \ 835 dyn = DYN ## B (elf->vdata + offset); \
819 while (EGET(dyn->d_tag) != DT_NULL) { \ 836 while (EGET(dyn->d_tag) != DT_NULL) { \
820 if (EGET(dyn->d_tag) == DT_NEEDED) { \ 837 if (EGET(dyn->d_tag) == DT_NEEDED) { \
821 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \ 838 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
822 if (offset >= (Elf ## B ## _Off)elf->len) { \ 839 if (offset >= (Elf ## B ## _Off)elf->len) { \
823 ++dyn; \ 840 ++dyn; \
824 continue; \ 841 continue; \
825 } \ 842 } \
826 needed = (char*)(elf->data + offset); \ 843 needed = elf->data + offset; \
827 if (op == 0) { \ 844 if (op == 0) { \
845 /* -n -> print all entries */ \
828 if (!be_wewy_wewy_quiet) { \ 846 if (!be_wewy_wewy_quiet) { \
829 if (*found_needed) xchrcat(ret, ',', ret_len); \ 847 if (*found_needed) xchrcat(ret, ',', ret_len); \
830 if (use_ldcache) \ 848 if (use_ldcache) \
831 if ((p = lookup_cache_lib(elf, needed)) != NULL) \ 849 if ((p = lookup_cache_lib(elf, needed)) != NULL) \
832 needed = p; \ 850 needed = p; \
833 xstrcat(ret, needed, ret_len); \ 851 xstrcat(ret, needed, ret_len); \
834 } \ 852 } \
835 *found_needed = 1; \ 853 *found_needed = 1; \
836 } else { \ 854 } else { \
837 if (!strncmp(find_lib, needed, strlen( !g_match ? needed : find_lib))) { \ 855 /* -N -> print matching entries */ \
856 size_t n; \
857 const char *find_lib_name; \
858 \
859 array_for_each(find_lib_arr, n, find_lib_name) \
860 if (!strcmp(find_lib_name, needed)) \
861 ++matched; \
862 \
863 if (matched == array_cnt(find_lib_arr)) { \
838 *found_lib = 1; \ 864 *found_lib = 1; \
839 return (be_wewy_wewy_quiet ? NULL : needed); \ 865 return (be_wewy_wewy_quiet ? NULL : find_lib); \
840 } \ 866 } \
841 } \ 867 } \
842 } \ 868 } \
843 ++dyn; \ 869 ++dyn; \
844 } \ 870 } \
889 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 915 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
890 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \ 916 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
891 dynamic = 1; \ 917 dynamic = 1; \
892 offset = EGET(phdr[i].p_offset); \ 918 offset = EGET(phdr[i].p_offset); \
893 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 919 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
894 dyn = DYN ## B (elf->data + offset); \ 920 dyn = DYN ## B (elf->vdata + offset); \
895 while (EGET(dyn->d_tag) != DT_NULL) { \ 921 while (EGET(dyn->d_tag) != DT_NULL) { \
896 if (EGET(dyn->d_tag) == DT_BIND_NOW || \ 922 if (EGET(dyn->d_tag) == DT_BIND_NOW || \
897 (EGET(dyn->d_tag) == DT_FLAGS && EGET(dyn->d_un.d_val) & DF_BIND_NOW)) \ 923 (EGET(dyn->d_tag) == DT_FLAGS && EGET(dyn->d_un.d_val) & DF_BIND_NOW)) \
898 { \ 924 { \
899 if (be_quiet) return NULL; \ 925 if (be_quiet) return NULL; \
912 /* don't output anything if quiet mode and the ELF is static or not setuid */ 938 /* don't output anything if quiet mode and the ELF is static or not setuid */
913 if (be_quiet && (!dynamic || (!fstat(elf->fd, &s) && !(s.st_mode & (S_ISUID|S_ISGID))))) { 939 if (be_quiet && (!dynamic || (!fstat(elf->fd, &s) && !(s.st_mode & (S_ISUID|S_ISGID))))) {
914 return NULL; 940 return NULL;
915 } else { 941 } else {
916 *found_bind = 1; 942 *found_bind = 1;
917 return (char *) (dynamic ? "LAZY" : "STATIC"); 943 return (char *)(dynamic ? "LAZY" : "STATIC");
918 } 944 }
919} 945}
920static char *scanelf_file_soname(elfobj *elf, char *found_soname) 946static char *scanelf_file_soname(elfobj *elf, char *found_soname)
921{ 947{
922 unsigned long i; 948 unsigned long i;
940 return NULL; \ 966 return NULL; \
941 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 967 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
942 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \ 968 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
943 offset = EGET(phdr[i].p_offset); \ 969 offset = EGET(phdr[i].p_offset); \
944 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 970 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
945 dyn = DYN ## B (elf->data + offset); \ 971 dyn = DYN ## B (elf->vdata + offset); \
946 while (EGET(dyn->d_tag) != DT_NULL) { \ 972 while (EGET(dyn->d_tag) != DT_NULL) { \
947 if (EGET(dyn->d_tag) == DT_SONAME) { \ 973 if (EGET(dyn->d_tag) == DT_SONAME) { \
948 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \ 974 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
949 if (offset >= (Elf ## B ## _Off)elf->len) { \ 975 if (offset >= (Elf ## B ## _Off)elf->len) { \
950 ++dyn; \ 976 ++dyn; \
951 continue; \ 977 continue; \
952 } \ 978 } \
953 soname = (char*)(elf->data + offset); \ 979 soname = elf->data + offset; \
954 *found_soname = 1; \ 980 *found_soname = 1; \
955 return (be_wewy_wewy_quiet ? NULL : soname); \ 981 return (be_wewy_wewy_quiet ? NULL : soname); \
956 } \ 982 } \
957 ++dyn; \ 983 ++dyn; \
958 } \ 984 } \
962 } 988 }
963 989
964 return NULL; 990 return NULL;
965} 991}
966 992
967static int scanelf_match_symname(const char *symname, const char *tomatch) { 993/*
968 /* We do things differently when checking with regexp */ 994 * We support the symbol form:
969 if (g_match) { 995 * [%[modifiers]%][[+-]<symbol name>][,[.....]]
970 return rematch(symname, tomatch, REG_EXTENDED) == 0; 996 * If the symbol name is empty, then all symbols are matched.
997 * If the symbol name is a glob ("*"), then all symbols are dumped (debug).
998 * Do not rely on this output format at all.
999 * Otherwise the symbol name is used to search (either regex or string compare).
1000 * If the first char of the symbol name is a plus ("+"), then only match
1001 * defined symbols. If it's a minus ("-"), only match undefined symbols.
1002 * Putting modifiers in between the percent signs allows for more in depth
1003 * filters. There are groups of modifiers. If you don't specify a member
1004 * of a group, then all types in that group are matched. The current
1005 * groups and their types are:
1006 * STT group: STT_NOTYPE:n STT_OBJECT:o STT_FUNC:f SST_FILE:F
1007 * STB group: STB_LOCAL:l STB_GLOBAL:g STB_WEAK:w
1008 * SHN group: SHN_UNDEF:u SHN_ABS:a SHN_COMMON:c {defined}:d
1009 * The "defined" value in the SHN group does not correspond to a SHN_xxx define.
1010 * You can search for multiple symbols at once by seperating with a comma (",").
1011 *
1012 * Some examples:
1013 * ELFs with a weak function "foo":
1014 * scanelf -s %wf%foo <ELFs>
1015 * ELFs that define the symbol "main":
1016 * scanelf -s +main <ELFs>
1017 * scanelf -s %d%main <ELFs>
1018 * ELFs that refer to the undefined symbol "brk":
1019 * scanelf -s -brk <ELFs>
1020 * scanelf -s %u%brk <ELFs>
1021 * All global defined objects in an ELF:
1022 * scanelf -s %ogd% <ELF>
1023 */
1024static void
1025scanelf_match_symname(elfobj *elf, char *found_sym, char **ret, size_t *ret_len, const char *symname,
1026 unsigned int stt, unsigned int stb, unsigned int shn, unsigned long size)
1027{
1028 char *this_sym, *next_sym, saved = saved;
1029
1030 /* allow the user to specify a comma delimited list of symbols to search for */
1031 next_sym = NULL;
1032 do {
1033 bool inc_notype, inc_object, inc_func, inc_file,
1034 inc_local, inc_global, inc_weak,
1035 inc_def, inc_undef, inc_abs, inc_common;
1036
1037 if (next_sym) {
1038 next_sym[-1] = saved;
1039 this_sym = next_sym;
1040 } else
1041 this_sym = find_sym;
1042 if ((next_sym = strchr(this_sym, ','))) {
1043 /* make parsing easier by killing the comma temporarily */
1044 saved = *next_sym;
1045 *next_sym = '\0';
1046 next_sym += 1;
1047 }
1048
1049 /* symbol selection! */
1050 inc_notype = inc_object = inc_func = inc_file = \
1051 inc_local = inc_global = inc_weak = \
1052 inc_def = inc_undef = inc_abs = inc_common = \
1053 (*this_sym != '%');
1054
1055 /* parse the contents of %...% */
1056 if (!inc_notype) {
1057 while (*(this_sym++)) {
1058 if (*this_sym == '%') {
1059 ++this_sym;
1060 break;
1061 }
1062 switch (*this_sym) {
1063 case 'n': inc_notype = true; break;
1064 case 'o': inc_object = true; break;
1065 case 'f': inc_func = true; break;
1066 case 'F': inc_file = true; break;
1067 case 'l': inc_local = true; break;
1068 case 'g': inc_global = true; break;
1069 case 'w': inc_weak = true; break;
1070 case 'd': inc_def = true; break;
1071 case 'u': inc_undef = true; break;
1072 case 'a': inc_abs = true; break;
1073 case 'c': inc_common = true; break;
1074 default: err("invalid symbol selector '%c'", *this_sym);
1075 }
1076 }
1077
1078 /* If no types are matched, not match all */
1079 if (!inc_notype && !inc_object && !inc_func && !inc_file)
1080 inc_notype = inc_object = inc_func = inc_file = true;
1081 if (!inc_local && !inc_global && !inc_weak)
1082 inc_local = inc_global = inc_weak = true;
1083 if (!inc_def && !inc_undef && !inc_abs && !inc_common)
1084 inc_def = inc_undef = inc_abs = inc_common = true;
1085
1086 /* backwards compat for defined/undefined short hand */
1087 } else if (*this_sym == '+') {
1088 inc_undef = false;
1089 ++this_sym;
1090 } else if (*this_sym == '-') {
1091 inc_def = inc_abs = inc_common = false;
1092 ++this_sym;
1093 }
1094
1095 /* filter symbols */
1096 if ((!inc_notype && stt == STT_NOTYPE) || \
1097 (!inc_object && stt == STT_OBJECT) || \
1098 (!inc_func && stt == STT_FUNC ) || \
1099 (!inc_file && stt == STT_FILE ) || \
1100 (!inc_local && stb == STB_LOCAL ) || \
1101 (!inc_global && stb == STB_GLOBAL) || \
1102 (!inc_weak && stb == STB_WEAK ) || \
1103 (!inc_def && shn && shn < SHN_LORESERVE) || \
1104 (!inc_undef && shn == SHN_UNDEF ) || \
1105 (!inc_abs && shn == SHN_ABS ) || \
1106 (!inc_common && shn == SHN_COMMON))
1107 continue;
1108
1109 if (*this_sym == '*') {
1110 /* a "*" symbol gets you debug output */
1111 printf("%s(%s) %5lX %15s %15s %15s %s\n",
1112 ((*found_sym == 0) ? "\n\t" : "\t"),
1113 elf->base_filename,
1114 size,
1115 get_elfstttype(stt),
1116 get_elfstbtype(stb),
1117 get_elfshntype(shn),
1118 symname);
1119 goto matched;
1120
971 } else { 1121 } else {
1122 if (g_match) {
1123 /* regex match the symbol */
1124 if (rematch(this_sym, symname, REG_EXTENDED) != 0)
1125 continue;
1126
1127 } else if (*this_sym) {
1128 /* give empty symbols a "pass", else do a normal compare */
972 const size_t symname_len = strlen(symname); 1129 const size_t len = strlen(this_sym);
973 return (strncmp(symname, tomatch, symname_len) == 0 && 1130 if (!(strncmp(this_sym, symname, len) == 0 &&
974 /* Accept unversioned symbol names */ 1131 /* Accept unversioned symbol names */
975 (tomatch[symname_len] == '\0' || tomatch[symname_len] == '@')); 1132 (symname[len] == '\0' || symname[len] == '@')))
1133 continue;
1134 }
1135
1136 if (be_semi_verbose) {
1137 char buf[1024];
1138 snprintf(buf, sizeof(buf), "%lX %s %s",
1139 size,
1140 get_elfstttype(stt),
1141 this_sym);
1142 *ret = xstrdup(buf);
1143 } else {
1144 if (*ret) xchrcat(ret, ',', ret_len);
1145 xstrcat(ret, symname, ret_len);
1146 }
1147
1148 goto matched;
976 } 1149 }
977} 1150 } while (next_sym);
978 1151
1152 return;
1153
1154 matched:
1155 *found_sym = 1;
1156 if (next_sym)
1157 next_sym[-1] = saved;
1158}
1159
979static char *scanelf_file_sym(elfobj *elf, char *found_sym) 1160static const char *scanelf_file_sym(elfobj *elf, char *found_sym)
980{ 1161{
981 unsigned long i; 1162 unsigned long i;
982 char *ret; 1163 char *ret;
983 void *symtab_void, *strtab_void; 1164 void *symtab_void, *strtab_void;
984 1165
985 if (!find_sym) return NULL; 1166 if (!find_sym) return NULL;
986 ret = find_sym; 1167 ret = NULL;
987 1168
988 scanelf_file_get_symtabs(elf, &symtab_void, &strtab_void); 1169 scanelf_file_get_symtabs(elf, &symtab_void, &strtab_void);
989 1170
990 if (symtab_void && strtab_void) { 1171 if (symtab_void && strtab_void) {
991#define FIND_SYM(B) \ 1172#define FIND_SYM(B) \
992 if (elf->elf_class == ELFCLASS ## B) { \ 1173 if (elf->elf_class == ELFCLASS ## B) { \
993 Elf ## B ## _Shdr *symtab = SHDR ## B (symtab_void); \ 1174 Elf ## B ## _Shdr *symtab = SHDR ## B (symtab_void); \
994 Elf ## B ## _Shdr *strtab = SHDR ## B (strtab_void); \ 1175 Elf ## B ## _Shdr *strtab = SHDR ## B (strtab_void); \
995 Elf ## B ## _Sym *sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \ 1176 Elf ## B ## _Sym *sym = SYM ## B (elf->vdata + EGET(symtab->sh_offset)); \
996 unsigned long cnt = EGET(symtab->sh_entsize); \ 1177 unsigned long cnt = EGET(symtab->sh_entsize); \
997 char *symname; \ 1178 char *symname; \
1179 size_t ret_len = 0; \
998 if (cnt) \ 1180 if (cnt) \
999 cnt = EGET(symtab->sh_size) / cnt; \ 1181 cnt = EGET(symtab->sh_size) / cnt; \
1000 for (i = 0; i < cnt; ++i) { \ 1182 for (i = 0; i < cnt; ++i) { \
1001 if ((void*)sym > (void*)elf->data_end) { \ 1183 if ((void*)sym > elf->data_end) { \
1002 warnf("%s: corrupt ELF symbols - aborting", elf->filename); \ 1184 warnf("%s: corrupt ELF symbols - aborting", elf->filename); \
1003 goto break_out; \ 1185 goto break_out; \
1004 } \ 1186 } \
1005 if (sym->st_name) { \ 1187 if (sym->st_name) { \
1006 /* make sure the symbol name is in acceptable memory range */ \ 1188 /* make sure the symbol name is in acceptable memory range */ \
1007 symname = (char *)(elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name)); \ 1189 symname = elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name); \
1008 if ((void*)symname > (void*)elf->data_end) { \ 1190 if ((void*)symname > elf->data_end) { \
1009 warnf("%s: corrupt ELF symbols", elf->filename); \ 1191 warnf("%s: corrupt ELF symbols", elf->filename); \
1010 ++sym; \ 1192 ++sym; \
1011 continue; \ 1193 continue; \
1012 } \ 1194 } \
1013 /* debug display ... show all symbols and some extra info */ \ 1195 scanelf_match_symname(elf, found_sym, \
1014 if (0 && g_match ? rematch(ret, symname, REG_EXTENDED) == 0 : *ret == '*') { \ 1196 &ret, &ret_len, symname, \
1015 printf("%s(%s) %5lX %15s %s %s\n", \ 1197 ELF##B##_ST_TYPE(EGET(sym->st_info)), \
1016 ((*found_sym == 0) ? "\n\t" : "\t"), \ 1198 ELF##B##_ST_BIND(EGET(sym->st_info)), \
1017 elf->base_filename, \ 1199 EGET(sym->st_shndx), \
1018 (unsigned long)sym->st_size, \ 1200 /* st_size can be 64bit, but no one is really that big, so screw em */ \
1019 get_elfstttype(sym->st_info), \ 1201 EGET(sym->st_size)); \
1020 sym->st_shndx == SHN_UNDEF ? "U" : "D", symname); \
1021 *found_sym = 1; \
1022 } else { \
1023 /* allow the user to specify a comma delimited list of symbols to search for */ \
1024 char *this_sym, *next_sym; \
1025 next_sym = ret; \
1026 while (next_sym) { \
1027 this_sym = next_sym; \
1028 if ((next_sym = strchr(this_sym, ','))) \
1029 next_sym += 1; /* Skip the comma */ \
1030 /* do we want a defined symbol ? */ \
1031 if (*this_sym == '+') { \
1032 if (sym->st_shndx == SHN_UNDEF) \
1033 continue; \
1034 ++this_sym; \
1035 /* do we want an undefined symbol ? */ \
1036 } else if (*this_sym == '-') { \
1037 if (sym->st_shndx != SHN_UNDEF) \
1038 continue; \
1039 ++this_sym; \
1040 } \
1041 if (next_sym) /* Copy it so that we don't have to worry about the final , */ \
1042 this_sym = xstrndup(this_sym, next_sym-this_sym); \
1043 /* ok, lets compare the name now */ \
1044 if (scanelf_match_symname(this_sym, symname)) { \
1045 if (be_semi_verbose) { \
1046 char buf[126]; \
1047 snprintf(buf, sizeof(buf), "%lX %s %s", \
1048 (unsigned long)sym->st_size, get_elfstttype(sym->st_info), this_sym); \
1049 ret = buf; \
1050 } else \
1051 ret = symname; \
1052 (*found_sym)++; \
1053 goto break_out; \
1054 } \
1055 if (next_sym) free(this_sym); \
1056 } \
1057 } \
1058 } \ 1202 } \
1059 ++sym; \ 1203 ++sym; \
1060 } } 1204 } }
1061 FIND_SYM(32) 1205 FIND_SYM(32)
1062 FIND_SYM(64) 1206 FIND_SYM(64)
1068 if (*find_sym != '*' && *found_sym) 1212 if (*find_sym != '*' && *found_sym)
1069 return ret; 1213 return ret;
1070 if (be_quiet) 1214 if (be_quiet)
1071 return NULL; 1215 return NULL;
1072 else 1216 else
1073 return (char *)" - "; 1217 return " - ";
1074} 1218}
1075 1219
1076static char *scanelf_file_sections(elfobj *elf, char *found_section) 1220static const char *scanelf_file_sections(elfobj *elf, char *found_section)
1077{ 1221{
1078 if (!find_section) 1222 if (!find_section)
1079 return NULL; 1223 return NULL;
1080 1224
1081#define FIND_SECTION(B) \ 1225#define FIND_SECTION(B) \
1082 if (elf->elf_class == ELFCLASS ## B) { \ 1226 if (elf->elf_class == ELFCLASS ## B) { \
1227 size_t matched, n; \
1083 int invert; \ 1228 int invert; \
1229 const char *section_name; \
1084 Elf ## B ## _Shdr *section; \ 1230 Elf ## B ## _Shdr *section; \
1231 \
1232 matched = 0; \
1233 array_for_each(find_section_arr, n, section_name) { \
1085 invert = (*find_section == '!' ? 1 : 0); \ 1234 invert = (*section_name == '!' ? 1 : 0); \
1086 section = SHDR ## B (elf_findsecbyname(elf, find_section+invert)); \ 1235 section = SHDR ## B (elf_findsecbyname(elf, section_name + invert)); \
1087 if ((section == NULL && invert) || (section != NULL && !invert)) \ 1236 if ((section == NULL && invert) || (section != NULL && !invert)) \
1237 ++matched; \
1238 } \
1239 \
1240 if (matched == array_cnt(find_section_arr)) \
1088 *found_section = 1; \ 1241 *found_section = 1; \
1089 } 1242 }
1090 FIND_SECTION(32) 1243 FIND_SECTION(32)
1091 FIND_SECTION(64) 1244 FIND_SECTION(64)
1092 1245
1097 return find_section; 1250 return find_section;
1098 1251
1099 if (be_quiet) 1252 if (be_quiet)
1100 return NULL; 1253 return NULL;
1101 else 1254 else
1102 return (char *)" - "; 1255 return " - ";
1103} 1256}
1104 1257
1105/* scan an elf file and show all the fun stuff */ 1258/* scan an elf file and show all the fun stuff */
1106#define prints(str) write(fileno(stdout), str, strlen(str)) 1259#define prints(str) ({ ssize_t ret = write(fileno(stdout), str, strlen(str)); ret; })
1107static int scanelf_elfobj(elfobj *elf) 1260static int scanelf_elfobj(elfobj *elf)
1108{ 1261{
1109 unsigned long i; 1262 unsigned long i;
1110 char found_pax, found_phdr, found_relro, found_load, found_textrel, 1263 char found_pax, found_phdr, found_relro, found_load, found_textrel,
1111 found_rpath, found_needed, found_interp, found_bind, found_soname, 1264 found_rpath, found_needed, found_interp, found_bind, found_soname,
1236 case 'I': out = get_elfosabi(elf); break; 1389 case 'I': out = get_elfosabi(elf); break;
1237 case 'Y': out = get_elf_eabi(elf); break; 1390 case 'Y': out = get_elf_eabi(elf); break;
1238 case 'Z': snprintf(ubuf, sizeof(ubuf), "%lu", (unsigned long)elf->len); out = ubuf; break;; 1391 case 'Z': snprintf(ubuf, sizeof(ubuf), "%lu", (unsigned long)elf->len); out = ubuf; break;;
1239 default: warnf("'%c' has no scan code?", out_format[i]); 1392 default: warnf("'%c' has no scan code?", out_format[i]);
1240 } 1393 }
1241 if (out) { 1394 if (out)
1242 /* hack for comma delimited output like `scanelf -s sym1,sym2,sym3` */
1243 if (out_format[i] == 's' && (tmp=strchr(out,',')) != NULL)
1244 xstrncat(&out_buffer, out, &out_len, (tmp-out));
1245 else
1246 xstrcat(&out_buffer, out, &out_len); 1395 xstrcat(&out_buffer, out, &out_len);
1247 }
1248 } 1396 }
1249 1397
1250#define FOUND_SOMETHING() \ 1398#define FOUND_SOMETHING() \
1251 (found_pax || found_phdr || found_relro || found_load || found_textrel || \ 1399 (found_pax || found_phdr || found_relro || found_load || found_textrel || \
1252 found_rpath || found_needed || found_interp || found_bind || \ 1400 found_rpath || found_needed || found_interp || found_bind || \
1284 if (elf->elf_class != ELFCLASS64) 1432 if (elf->elf_class != ELFCLASS64)
1285 goto label_done; 1433 goto label_done;
1286 break; 1434 break;
1287 default: break; 1435 default: break;
1288 } 1436 }
1289 if (strlen(match_etypes)) { 1437 if (match_etypes) {
1290 char sbuf[126]; 1438 char sbuf[126];
1291 strncpy(sbuf, match_etypes, sizeof(sbuf)); 1439 strncpy(sbuf, match_etypes, sizeof(sbuf));
1292 if (strchr(match_etypes, ',') != NULL) { 1440 if (strchr(match_etypes, ',') != NULL) {
1293 char *p; 1441 char *p;
1294 while ((p = strrchr(sbuf, ',')) != NULL) { 1442 while ((p = strrchr(sbuf, ',')) != NULL) {
1320 ar = ar_open_fd(filename, fd); 1468 ar = ar_open_fd(filename, fd);
1321 if (ar == NULL) 1469 if (ar == NULL)
1322 return 1; 1470 return 1;
1323 1471
1324 ar_buffer = mmap(0, len, PROT_READ | (fix_elf ? PROT_WRITE : 0), (fix_elf ? MAP_SHARED : MAP_PRIVATE), fd, 0); 1472 ar_buffer = mmap(0, len, PROT_READ | (fix_elf ? PROT_WRITE : 0), (fix_elf ? MAP_SHARED : MAP_PRIVATE), fd, 0);
1325 while ((m=ar_next(ar)) != NULL) { 1473 while ((m = ar_next(ar)) != NULL) {
1474 off_t cur_pos = lseek(fd, 0, SEEK_CUR);
1475 if (cur_pos == -1)
1476 errp("lseek() failed");
1326 elf = readelf_buffer(m->name, ar_buffer+lseek(fd,0,SEEK_CUR), m->size); 1477 elf = readelf_buffer(m->name, ar_buffer + cur_pos, m->size);
1327 if (elf) { 1478 if (elf) {
1328 scanelf_elfobj(elf); 1479 scanelf_elfobj(elf);
1329 unreadelf(elf); 1480 unreadelf(elf);
1330 } 1481 }
1331 } 1482 }
1365 1516
1366 close(fd); 1517 close(fd);
1367 return 0; 1518 return 0;
1368} 1519}
1369 1520
1521static const char *maybe_add_root(const char *fname, char *buf)
1522{
1523 if (root && strncmp(fname, root, strlen(root))) {
1524 strcpy(buf, root);
1525 strncat(buf, fname, __PAX_UTILS_PATH_MAX - strlen(root) - 1);
1526 fname = buf;
1527 }
1528 return fname;
1529}
1530
1370/* scan a directory for ET_EXEC files and print when we find one */ 1531/* scan a directory for ET_EXEC files and print when we find one */
1371static int scanelf_dir(const char *path) 1532static int scanelf_dir(const char *path)
1372{ 1533{
1373 register DIR *dir; 1534 register DIR *dir;
1374 register struct dirent *dentry; 1535 register struct dirent *dentry;
1375 struct stat st_top, st; 1536 struct stat st_top, st;
1376 char buf[__PAX_UTILS_PATH_MAX]; 1537 char buf[__PAX_UTILS_PATH_MAX];
1538 char _path[__PAX_UTILS_PATH_MAX];
1377 size_t pathlen = 0, len = 0; 1539 size_t pathlen = 0, len = 0;
1378 int ret = 0; 1540 int ret = 0;
1541
1542 path = maybe_add_root(path, _path);
1379 1543
1380 /* make sure path exists */ 1544 /* make sure path exists */
1381 if (lstat(path, &st_top) == -1) { 1545 if (lstat(path, &st_top) == -1) {
1382 if (be_verbose > 2) printf("%s: does not exist\n", path); 1546 if (be_verbose > 2) printf("%s: does not exist\n", path);
1383 return 1; 1547 return 1;
1447static int load_ld_cache_config(int i, const char *fname) 1611static int load_ld_cache_config(int i, const char *fname)
1448{ 1612{
1449 FILE *fp = NULL; 1613 FILE *fp = NULL;
1450 char *p; 1614 char *p;
1451 char path[__PAX_UTILS_PATH_MAX]; 1615 char path[__PAX_UTILS_PATH_MAX];
1616 char _fname[__PAX_UTILS_PATH_MAX];
1452 1617
1453 if (i + 1 == ARRAY_SIZE(ldpaths)) 1618 fname = maybe_add_root(fname, _fname);
1454 return i;
1455 1619
1456 if ((fp = fopen(fname, "r")) == NULL) 1620 if ((fp = fopen(fname, "r")) == NULL)
1457 return i; 1621 return i;
1458 1622
1459 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) { 1623 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) {
1460 if ((p = strrchr(path, '\r')) != NULL) 1624 if ((p = strrchr(path, '\r')) != NULL)
1461 *p = 0; 1625 *p = 0;
1462 if ((p = strchr(path, '\n')) != NULL) 1626 if ((p = strchr(path, '\n')) != NULL)
1463 *p = 0; 1627 *p = 0;
1464#ifdef __linux__ 1628
1465 /* recursive includes of the same file will make this segfault. */ 1629 /* recursive includes of the same file will make this segfault. */
1466 if ((memcmp(path, "include", 7) == 0) && isblank(path[7])) { 1630 if ((memcmp(path, "include", 7) == 0) && isblank(path[7])) {
1467 glob64_t gl; 1631 glob_t gl;
1468 size_t x; 1632 size_t x;
1469 char gpath[__PAX_UTILS_PATH_MAX]; 1633 char gpath[__PAX_UTILS_PATH_MAX];
1470 1634
1471 memset(gpath, 0, sizeof(gpath)); 1635 memset(gpath, 0, sizeof(gpath));
1636 if (root)
1637 strcpy(gpath, root);
1472 1638
1473 if (path[8] != '/') 1639 if (path[8] != '/')
1474 snprintf(gpath, sizeof(gpath), "/etc/%s", &path[8]); 1640 snprintf(gpath+strlen(gpath), sizeof(gpath)-strlen(gpath), "/etc/%s", &path[8]);
1475 else 1641 else
1476 strncpy(gpath, &path[8], sizeof(gpath)); 1642 strncpy(gpath+strlen(gpath), &path[8], sizeof(gpath)-strlen(gpath));
1477 1643
1478 if ((glob64(gpath, 0, NULL, &gl)) == 0) { 1644 if (glob(gpath, 0, NULL, &gl) == 0) {
1479 for (x = 0; x < gl.gl_pathc; ++x) { 1645 for (x = 0; x < gl.gl_pathc; ++x) {
1480 /* try to avoid direct loops */ 1646 /* try to avoid direct loops */
1481 if (strcmp(gl.gl_pathv[x], fname) == 0) 1647 if (strcmp(gl.gl_pathv[x], fname) == 0)
1482 continue; 1648 continue;
1483 i = load_ld_cache_config(i, gl.gl_pathv[x]); 1649 i = load_ld_cache_config(i, gl.gl_pathv[x]);
1484 if (i + 1 >= ARRAY_SIZE(ldpaths)) {
1485 globfree64(&gl);
1486 return i;
1487 }
1488 } 1650 }
1489 globfree64 (&gl); 1651 globfree(&gl);
1490 continue; 1652 continue;
1491 } 1653 }
1492 } 1654 }
1493#endif 1655
1494 if (*path != '/') 1656 if (*path != '/')
1495 continue; 1657 continue;
1496 1658
1497 ldpaths[i++] = xstrdup(path); 1659 xarraypush(ldpaths, path, strlen(path));
1498
1499 if (i + 1 == ARRAY_SIZE(ldpaths))
1500 break;
1501 } 1660 }
1502 ldpaths[i] = NULL;
1503 1661
1504 fclose(fp); 1662 fclose(fp);
1505 return i; 1663 return i;
1506} 1664}
1507 1665
1508#elif defined(__FreeBSD__) || (__DragonFly__) 1666#elif defined(__FreeBSD__) || defined(__DragonFly__)
1509 1667
1510static int load_ld_cache_config(int i, const char *fname) 1668static int load_ld_cache_config(int i, const char *fname)
1511{ 1669{
1512 FILE *fp = NULL; 1670 FILE *fp = NULL;
1513 char *b = NULL, *p; 1671 char *b = NULL, *p;
1514 struct elfhints_hdr hdr; 1672 struct elfhints_hdr hdr;
1673 char _fname[__PAX_UTILS_PATH_MAX];
1515 1674
1516 if (i + 1 == ARRAY_SIZE(ldpaths)) 1675 fname = maybe_add_root(fname, _fname);
1517 return i;
1518 1676
1519 if ((fp = fopen(fname, "r")) == NULL) 1677 if ((fp = fopen(fname, "r")) == NULL)
1520 return i; 1678 return i;
1521 1679
1522 if (fread(&hdr, 1, sizeof(hdr), fp) != sizeof(hdr) || 1680 if (fread(&hdr, 1, sizeof(hdr), fp) != sizeof(hdr) ||
1533 free(b); 1691 free(b);
1534 return i; 1692 return i;
1535 } 1693 }
1536 1694
1537 while ((p = strsep(&b, ":"))) { 1695 while ((p = strsep(&b, ":"))) {
1538 if (*p == '\0') continue; 1696 if (*p == '\0')
1539 ldpaths[i++] = xstrdup(p); 1697 continue;
1540 1698 xarraypush(ldpaths, p, strlen(p));
1541 if (i + 1 == ARRAY_SIZE(ldpaths))
1542 break;
1543 } 1699 }
1544 ldpaths[i] = NULL;
1545 1700
1546 free(b); 1701 free(b);
1547 fclose(fp); 1702 fclose(fp);
1548 return i; 1703 return i;
1549} 1704}
1552#ifdef __ELF__ 1707#ifdef __ELF__
1553#warning Cache config support not implemented for your target 1708#warning Cache config support not implemented for your target
1554#endif 1709#endif
1555static int load_ld_cache_config(int i, const char *fname) 1710static int load_ld_cache_config(int i, const char *fname)
1556{ 1711{
1557 memset(ldpaths, 0x00, sizeof(ldpaths));
1558 return 0; 1712 return 0;
1559} 1713}
1560#endif 1714#endif
1561 1715
1562/* scan /etc/ld.so.conf for paths */ 1716/* scan /etc/ld.so.conf for paths */
1563static void scanelf_ldpath(void) 1717static void scanelf_ldpath(void)
1564{ 1718{
1565 char scan_l, scan_ul, scan_ull; 1719 char scan_l, scan_ul, scan_ull;
1720 size_t n;
1721 const char *ldpath;
1566 int i = 0; 1722 int i = 0;
1567 1723
1568 if (!ldpaths[0]) 1724 if (array_cnt(ldpaths) == 0)
1569 err("Unable to load any paths from ld.so.conf"); 1725 err("Unable to load any paths from ld.so.conf");
1570 1726
1571 scan_l = scan_ul = scan_ull = 0; 1727 scan_l = scan_ul = scan_ull = 0;
1572 1728
1573 while (ldpaths[i]) { 1729 array_for_each(ldpaths, n, ldpath) {
1574 if (!scan_l && !strcmp(ldpaths[i], "/lib")) scan_l = 1; 1730 if (!scan_l && !strcmp(ldpath, "/lib")) scan_l = 1;
1575 if (!scan_ul && !strcmp(ldpaths[i], "/usr/lib")) scan_ul = 1; 1731 if (!scan_ul && !strcmp(ldpath, "/usr/lib")) scan_ul = 1;
1576 if (!scan_ull && !strcmp(ldpaths[i], "/usr/local/lib")) scan_ull = 1; 1732 if (!scan_ull && !strcmp(ldpath, "/usr/local/lib")) scan_ull = 1;
1577 scanelf_dir(ldpaths[i]); 1733 scanelf_dir(ldpath);
1578 ++i; 1734 ++i;
1579 } 1735 }
1580 1736
1581 if (!scan_l) scanelf_dir("/lib"); 1737 if (!scan_l) scanelf_dir("/lib");
1582 if (!scan_ul) scanelf_dir("/usr/lib"); 1738 if (!scan_ul) scanelf_dir("/usr/lib");
1599 } 1755 }
1600 1756
1601 free(path); 1757 free(path);
1602} 1758}
1603 1759
1604/* usage / invocation handling functions */ /* Free Flags: c d j u w C G H J K P Q U W */ 1760/* usage / invocation handling functions */ /* Free Flags: c d j u w G H J K P Q U W */
1605#define PARSE_FLAGS "plRmyAXz:xetrnLibSs:k:gN:TaqvF:f:o:E:M:DIYO:ZBhV" 1761#define PARSE_FLAGS "plRmyAXz:xetrnLibSs:k:gN:TaqvF:f:o:E:M:DIYO:ZCBhV"
1606#define a_argument required_argument 1762#define a_argument required_argument
1607static struct option const long_opts[] = { 1763static struct option const long_opts[] = {
1608 {"path", no_argument, NULL, 'p'}, 1764 {"path", no_argument, NULL, 'p'},
1609 {"ldpath", no_argument, NULL, 'l'}, 1765 {"ldpath", no_argument, NULL, 'l'},
1766 {"root", a_argument, NULL, 128},
1610 {"recursive", no_argument, NULL, 'R'}, 1767 {"recursive", no_argument, NULL, 'R'},
1611 {"mount", no_argument, NULL, 'm'}, 1768 {"mount", no_argument, NULL, 'm'},
1612 {"symlink", no_argument, NULL, 'y'}, 1769 {"symlink", no_argument, NULL, 'y'},
1613 {"archives", no_argument, NULL, 'A'}, 1770 {"archives", no_argument, NULL, 'A'},
1614 {"ldcache", no_argument, NULL, 'L'}, 1771 {"ldcache", no_argument, NULL, 'L'},
1638 {"quiet", no_argument, NULL, 'q'}, 1795 {"quiet", no_argument, NULL, 'q'},
1639 {"verbose", no_argument, NULL, 'v'}, 1796 {"verbose", no_argument, NULL, 'v'},
1640 {"format", a_argument, NULL, 'F'}, 1797 {"format", a_argument, NULL, 'F'},
1641 {"from", a_argument, NULL, 'f'}, 1798 {"from", a_argument, NULL, 'f'},
1642 {"file", a_argument, NULL, 'o'}, 1799 {"file", a_argument, NULL, 'o'},
1800 {"nocolor", no_argument, NULL, 'C'},
1643 {"nobanner", no_argument, NULL, 'B'}, 1801 {"nobanner", no_argument, NULL, 'B'},
1644 {"help", no_argument, NULL, 'h'}, 1802 {"help", no_argument, NULL, 'h'},
1645 {"version", no_argument, NULL, 'V'}, 1803 {"version", no_argument, NULL, 'V'},
1646 {NULL, no_argument, NULL, 0x0} 1804 {NULL, no_argument, NULL, 0x0}
1647}; 1805};
1648 1806
1649static const char *opts_help[] = { 1807static const char * const opts_help[] = {
1650 "Scan all directories in PATH environment", 1808 "Scan all directories in PATH environment",
1651 "Scan all directories in /etc/ld.so.conf", 1809 "Scan all directories in /etc/ld.so.conf",
1810 "Root directory (use with -l or -p)",
1652 "Scan directories recursively", 1811 "Scan directories recursively",
1653 "Don't recursively cross mount points", 1812 "Don't recursively cross mount points",
1654 "Don't scan symlinks", 1813 "Don't scan symlinks",
1655 "Scan archives (.a files)", 1814 "Scan archives (.a files)",
1656 "Utilize ld.so.cache information (use with -r/-n)", 1815 "Utilize ld.so.cache information (use with -r/-n)",
1665 "Print BIND information", 1824 "Print BIND information",
1666 "Print SONAME information", 1825 "Print SONAME information",
1667 "Find a specified symbol", 1826 "Find a specified symbol",
1668 "Find a specified section", 1827 "Find a specified section",
1669 "Find a specified library", 1828 "Find a specified library",
1670 "Use strncmp to match libraries. (use with -N)", 1829 "Use regex matching rather than string compare (use with -s)",
1671 "Locate cause of TEXTREL", 1830 "Locate cause of TEXTREL",
1672 "Print only ELF files matching etype ET_DYN,ET_EXEC ...", 1831 "Print only ELF files matching etype ET_DYN,ET_EXEC ...",
1673 "Print only ELF files matching numeric bits", 1832 "Print only ELF files matching numeric bits",
1674 "Print Endianness", 1833 "Print Endianness",
1675 "Print OSABI", 1834 "Print OSABI",
1676 "Print EABI (EM_ARM Only)", 1835 "Print EABI (EM_ARM Only)",
1677 "Print only ELF files matching octal permissions", 1836 "Print only ELF files matching octal permissions",
1678 "Print ELF file size", 1837 "Print ELF file size",
1679 "Print all scanned info (-x -e -t -r -b)\n", 1838 "Print all useful/simple info\n",
1680 "Only output 'bad' things", 1839 "Only output 'bad' things",
1681 "Be verbose (can be specified more than once)", 1840 "Be verbose (can be specified more than once)",
1682 "Use specified format for output", 1841 "Use specified format for output",
1683 "Read input stream from a filename", 1842 "Read input stream from a filename",
1684 "Write output stream to a filename", 1843 "Write output stream to a filename",
1844 "Don't emit color in output",
1685 "Don't display the header", 1845 "Don't display the header",
1686 "Print this help and exit", 1846 "Print this help and exit",
1687 "Print version and exit", 1847 "Print version and exit",
1688 NULL 1848 NULL
1689}; 1849};
1696 "Usage: %s [options] <dir1/file1> [dir2 dirN file2 fileN ...]\n\n", argv0); 1856 "Usage: %s [options] <dir1/file1> [dir2 dirN file2 fileN ...]\n\n", argv0);
1697 printf("Options: -[%s]\n", PARSE_FLAGS); 1857 printf("Options: -[%s]\n", PARSE_FLAGS);
1698 for (i = 0; long_opts[i].name; ++i) 1858 for (i = 0; long_opts[i].name; ++i)
1699 if (long_opts[i].has_arg == no_argument) 1859 if (long_opts[i].has_arg == no_argument)
1700 printf(" -%c, --%-14s* %s\n", long_opts[i].val, 1860 printf(" -%c, --%-14s* %s\n", long_opts[i].val,
1861 long_opts[i].name, opts_help[i]);
1862 else if (long_opts[i].val > '~')
1863 printf(" --%-7s <arg> * %s\n",
1701 long_opts[i].name, opts_help[i]); 1864 long_opts[i].name, opts_help[i]);
1702 else 1865 else
1703 printf(" -%c, --%-7s <arg> * %s\n", long_opts[i].val, 1866 printf(" -%c, --%-7s <arg> * %s\n", long_opts[i].val,
1704 long_opts[i].name, opts_help[i]); 1867 long_opts[i].name, opts_help[i]);
1705 1868
1736 case 'f': 1899 case 'f':
1737 if (from_file) warn("You prob don't want to specify -f twice"); 1900 if (from_file) warn("You prob don't want to specify -f twice");
1738 from_file = optarg; 1901 from_file = optarg;
1739 break; 1902 break;
1740 case 'E': 1903 case 'E':
1741 strncpy(match_etypes, optarg, sizeof(match_etypes)); 1904 match_etypes = optarg;
1742 break; 1905 break;
1743 case 'M': 1906 case 'M':
1744 match_bits = atoi(optarg); 1907 match_bits = atoi(optarg);
1745 if (match_bits == 0) { 1908 if (match_bits == 0) {
1746 if (strcmp(optarg, "ELFCLASS32") == 0) 1909 if (strcmp(optarg, "ELFCLASS32") == 0)
1757 if (freopen(optarg, "w", stdout) == NULL) 1920 if (freopen(optarg, "w", stdout) == NULL)
1758 err("Could not open output stream '%s': %s", optarg, strerror(errno)); 1921 err("Could not open output stream '%s': %s", optarg, strerror(errno));
1759 break; 1922 break;
1760 } 1923 }
1761 case 'k': 1924 case 'k':
1762 if (find_section) warn("You prob don't want to specify -k twice"); 1925 xarraypush(find_section_arr, optarg, strlen(optarg));
1763 find_section = optarg;
1764 break; 1926 break;
1765 case 's': { 1927 case 's': {
1766 if (find_sym) warn("You prob don't want to specify -s twice"); 1928 if (find_sym) warn("You prob don't want to specify -s twice");
1767 find_sym = optarg; 1929 find_sym = optarg;
1768 break; 1930 break;
1769 } 1931 }
1770 case 'N': { 1932 case 'N':
1771 if (find_lib) warn("You prob don't want to specify -N twice"); 1933 xarraypush(find_lib_arr, optarg, strlen(optarg));
1772 find_lib = optarg;
1773 break; 1934 break;
1774 }
1775
1776 case 'F': { 1935 case 'F': {
1777 if (out_format) warn("You prob don't want to specify -F twice"); 1936 if (out_format) warn("You prob don't want to specify -F twice");
1778 out_format = optarg; 1937 out_format = optarg;
1779 break; 1938 break;
1780 } 1939 }
1824 case 'Z': show_size = 1; break; 1983 case 'Z': show_size = 1; break;
1825 case 'g': g_match = 1; break; 1984 case 'g': g_match = 1; break;
1826 case 'L': use_ldcache = 1; break; 1985 case 'L': use_ldcache = 1; break;
1827 case 'y': scan_symlink = 0; break; 1986 case 'y': scan_symlink = 0; break;
1828 case 'A': scan_archives = 1; break; 1987 case 'A': scan_archives = 1; break;
1988 case 'C': color_init(true); break;
1829 case 'B': show_banner = 0; break; 1989 case 'B': show_banner = 0; break;
1830 case 'l': scan_ldpath = 1; break; 1990 case 'l': scan_ldpath = 1; break;
1831 case 'p': scan_envpath = 1; break; 1991 case 'p': scan_envpath = 1; break;
1832 case 'R': dir_recurse = 1; break; 1992 case 'R': dir_recurse = 1; break;
1833 case 'm': dir_crossmount = 0; break; 1993 case 'm': dir_crossmount = 0; break;
1845 case 'v': be_verbose = (be_verbose % 20) + 1; break; 2005 case 'v': be_verbose = (be_verbose % 20) + 1; break;
1846 case 'a': show_perms = show_pax = show_phdr = show_textrel = show_rpath = show_bind = show_endian = 1; break; 2006 case 'a': show_perms = show_pax = show_phdr = show_textrel = show_rpath = show_bind = show_endian = 1; break;
1847 case 'D': show_endian = 1; break; 2007 case 'D': show_endian = 1; break;
1848 case 'I': show_osabi = 1; break; 2008 case 'I': show_osabi = 1; break;
1849 case 'Y': show_eabi = 1; break; 2009 case 'Y': show_eabi = 1; break;
2010 case 128:
2011 root = optarg;
2012 break;
1850 case ':': 2013 case ':':
1851 err("Option '%c' is missing parameter", optopt); 2014 err("Option '%c' is missing parameter", optopt);
1852 case '?': 2015 case '?':
1853 err("Unknown option '%c' or argument missing", optopt); 2016 err("Unknown option '%c' or argument missing", optopt);
1854 default: 2017 default:
1857 } 2020 }
1858 if (show_textrels && be_verbose) { 2021 if (show_textrels && be_verbose) {
1859 if (which("objdump") != NULL) 2022 if (which("objdump") != NULL)
1860 has_objdump = 1; 2023 has_objdump = 1;
1861 } 2024 }
2025 /* flatten arrays for display */
2026 if (array_cnt(find_lib_arr))
2027 find_lib = array_flatten_str(find_lib_arr);
2028 if (array_cnt(find_section_arr))
2029 find_section = array_flatten_str(find_section_arr);
1862 /* let the format option override all other options */ 2030 /* let the format option override all other options */
1863 if (out_format) { 2031 if (out_format) {
1864 show_pax = show_phdr = show_textrel = show_rpath = \ 2032 show_pax = show_phdr = show_textrel = show_rpath = \
1865 show_needed = show_interp = show_bind = show_soname = \ 2033 show_needed = show_interp = show_bind = show_soname = \
1866 show_textrels = show_perms = show_endian = show_size = \ 2034 show_textrels = show_perms = show_endian = show_size = \
1945 search_path = argv[optind++]; 2113 search_path = argv[optind++];
1946 ret = scanelf_dir(search_path); 2114 ret = scanelf_dir(search_path);
1947 } 2115 }
1948 2116
1949 /* clean up */ 2117 /* clean up */
1950 for (i = 0; ldpaths[i]; ++i)
1951 free(ldpaths[i]); 2118 xarrayfree(ldpaths);
2119 xarrayfree(find_lib_arr);
2120 xarrayfree(find_section_arr);
2121 free(find_lib);
2122 free(find_section);
1952 2123
1953 if (ldcache != 0) 2124 if (ldcache != 0)
1954 munmap(ldcache, ldcache_size); 2125 munmap(ldcache, ldcache_size);
1955 return ret; 2126 return ret;
1956} 2127}
1989 return envvals; 2160 return envvals;
1990} 2161}
1991 2162
1992static void parseenv(void) 2163static void parseenv(void)
1993{ 2164{
2165 color_init(false);
1994 qa_textrels = get_split_env("QA_TEXTRELS"); 2166 qa_textrels = get_split_env("QA_TEXTRELS");
1995 qa_execstack = get_split_env("QA_EXECSTACK"); 2167 qa_execstack = get_split_env("QA_EXECSTACK");
1996 qa_wx_load = get_split_env("QA_WX_LOAD"); 2168 qa_wx_load = get_split_env("QA_WX_LOAD");
1997} 2169}
1998 2170

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