/[gentoo-projects]/pax-utils/scanelf.c
Gentoo

Contents of /pax-utils/scanelf.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.83 - (show annotations) (download) (as text)
Wed Jun 22 17:43:12 2005 UTC (9 years ago) by solar
Branch: MAIN
Changes since 1.82: +24 -2 lines
File MIME type: text/x-csrc
- add a few rpath security checks

1 /*
2 * Copyright 2003-2005 Gentoo Foundation
3 * Distributed under the terms of the GNU General Public License v2
4 * $Header: /var/cvsroot/gentoo-projects/pax-utils/scanelf.c,v 1.82 2005/06/19 05:39:31 vapier Exp $
5 *
6 ********************************************************************
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of the
10 * License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * MA 02111-1307, USA.
21 */
22
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <sys/types.h>
26 #include <libgen.h>
27 #include <limits.h>
28 #define __USE_GNU
29 #include <string.h>
30 #include <errno.h>
31 #include <unistd.h>
32 #include <sys/stat.h>
33 #include <dirent.h>
34 #include <getopt.h>
35 #include <assert.h>
36 #include "paxelf.h"
37
38 static const char *rcsid = "$Id: scanelf.c,v 1.82 2005/06/19 05:39:31 vapier Exp $";
39 #define argv0 "scanelf"
40
41 #define IS_MODIFIER(c) (c == '%' || c == '#')
42
43
44
45 /* prototypes */
46 static void scanelf_file(const char *filename);
47 static void scanelf_dir(const char *path);
48 static void scanelf_ldpath();
49 static void scanelf_envpath();
50 static void usage(int status);
51 static void parseargs(int argc, char *argv[]);
52 static char *xstrdup(const char *s);
53 static void *xmalloc(size_t size);
54 static void xstrcat(char **dst, const char *src, size_t *curr_len);
55 static inline void xchrcat(char **dst, const char append, size_t *curr_len);
56
57 /* variables to control behavior */
58 static char *ldpaths[256];
59 static char scan_ldpath = 0;
60 static char scan_envpath = 0;
61 static char scan_symlink = 1;
62 static char dir_recurse = 0;
63 static char dir_crossmount = 1;
64 static char show_pax = 0;
65 static char show_phdr = 0;
66 static char show_textrel = 0;
67 static char show_rpath = 0;
68 static char show_needed = 0;
69 static char show_interp = 0;
70 static char show_bind = 0;
71 static char show_textrels = 0;
72 static char show_banner = 1;
73 static char be_quiet = 0;
74 static char be_verbose = 0;
75 static char be_wewy_wewy_quiet = 0;
76 static char *find_sym = NULL, *versioned_symname = NULL;
77 static char *find_lib = NULL;
78 static char *out_format = NULL;
79 static char *search_path = NULL;
80
81
82
83 /* sub-funcs for scanelf_file() */
84 static void scanelf_file_get_symtabs(elfobj *elf, void **sym, void **tab)
85 {
86 /* find the best SHT_DYNSYM and SHT_STRTAB sections */
87 #define GET_SYMTABS(B) \
88 if (elf->elf_class == ELFCLASS ## B) { \
89 Elf ## B ## _Shdr *symtab, *strtab, *dynsym, *dynstr; \
90 /* debug sections */ \
91 symtab = SHDR ## B (elf_findsecbyname(elf, ".symtab")); \
92 strtab = SHDR ## B (elf_findsecbyname(elf, ".strtab")); \
93 /* runtime sections */ \
94 dynsym = SHDR ## B (elf_findsecbyname(elf, ".dynsym")); \
95 dynstr = SHDR ## B (elf_findsecbyname(elf, ".dynstr")); \
96 if (symtab && dynsym) { \
97 *sym = (void*)((EGET(symtab->sh_size) > EGET(dynsym->sh_size)) ? symtab : dynsym); \
98 } else { \
99 *sym = (void*)(symtab ? symtab : dynsym); \
100 } \
101 if (strtab && dynstr) { \
102 *tab = (void*)((EGET(strtab->sh_size) > EGET(dynstr->sh_size)) ? strtab : dynstr); \
103 } else { \
104 *tab = (void*)(strtab ? strtab : dynstr); \
105 } \
106 }
107 GET_SYMTABS(32)
108 GET_SYMTABS(64)
109 }
110 static char *scanelf_file_pax(elfobj *elf, char *found_pax)
111 {
112 static char *paxflags;
113 static char ret[7];
114 unsigned long i, shown;
115
116 if (!show_pax) return NULL;
117
118 shown = 0;
119 memset(&ret, 0, sizeof(ret));
120
121 if (elf->phdr) {
122 #define SHOW_PAX(B) \
123 if (elf->elf_class == ELFCLASS ## B) { \
124 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
125 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
126 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
127 if (EGET(phdr[i].p_type) != PT_PAX_FLAGS) \
128 continue; \
129 if (be_quiet && (EGET(phdr[i].p_flags) == 10240)) \
130 continue; \
131 memcpy(ret, pax_short_pf_flags(EGET(phdr[i].p_flags)), 6); \
132 *found_pax = 1; \
133 ++shown; \
134 break; \
135 } \
136 }
137 SHOW_PAX(32)
138 SHOW_PAX(64)
139 }
140
141 /* fall back to EI_PAX if no PT_PAX was found */
142 if (!*ret) {
143 paxflags = pax_short_hf_flags(EI_PAX_FLAGS(elf));
144 if (!be_quiet || (be_quiet && EI_PAX_FLAGS(elf))) {
145 *found_pax = 1;
146 return paxflags;
147 }
148 strncpy(ret, paxflags, sizeof(ret));
149 }
150
151 if (be_quiet && !shown)
152 return NULL;
153 return ret;
154
155 }
156 static char *scanelf_file_phdr(elfobj *elf, char *found_phdr, char *found_relro, char *found_load)
157 {
158 static char ret[12];
159 char *found;
160 unsigned long i, off, shown, check_flags;
161 unsigned char multi_stack, multi_relro, multi_load;
162
163 if (!show_phdr) return NULL;
164
165 memcpy(ret, "--- --- ---\0", 12);
166
167 shown = 0;
168 multi_stack = multi_relro = multi_load = 0;
169
170 if (elf->phdr) {
171 #define SHOW_PHDR(B) \
172 if (elf->elf_class == ELFCLASS ## B) { \
173 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
174 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
175 uint32_t flags; \
176 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
177 if (EGET(phdr[i].p_type) == PT_GNU_STACK) { \
178 if (multi_stack++) warnf("%s: multiple PT_GNU_STACK's !?", elf->filename); \
179 found = found_phdr; \
180 off = 0; \
181 check_flags = PF_X; \
182 } else if (EGET(phdr[i].p_type) == PT_GNU_RELRO) { \
183 if (multi_relro++) warnf("%s: multiple PT_GNU_RELRO's !?", elf->filename); \
184 found = found_relro; \
185 off = 4; \
186 check_flags = PF_X; \
187 } else if (EGET(phdr[i].p_type) == PT_LOAD) { \
188 if (multi_load++ > 2) warnf("%s: more than 2 PT_LOAD's !?", elf->filename); \
189 found = found_load; \
190 off = 8; \
191 check_flags = PF_W|PF_X; \
192 } else \
193 continue; \
194 flags = EGET(phdr[i].p_flags); \
195 if (be_quiet && ((flags & check_flags) != check_flags)) \
196 continue; \
197 memcpy(ret+off, gnu_short_stack_flags(flags), 3); \
198 *found = 1; \
199 ++shown; \
200 } \
201 }
202 SHOW_PHDR(32)
203 SHOW_PHDR(64)
204 }
205
206 if (be_quiet && !shown)
207 return NULL;
208 else
209 return ret;
210 }
211 static char *scanelf_file_textrel(elfobj *elf, char *found_textrel)
212 {
213 static char ret[] = "TEXTREL";
214 unsigned long i;
215
216 if (!show_textrel && !show_textrels) return NULL;
217
218 if (elf->phdr) {
219 #define SHOW_TEXTREL(B) \
220 if (elf->elf_class == ELFCLASS ## B) { \
221 Elf ## B ## _Dyn *dyn; \
222 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
223 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
224 Elf ## B ## _Off offset; \
225 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
226 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \
227 offset = EGET(phdr[i].p_offset); \
228 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
229 dyn = DYN ## B (elf->data + offset); \
230 while (EGET(dyn->d_tag) != DT_NULL) { \
231 if (EGET(dyn->d_tag) == DT_TEXTREL) { /*dyn->d_tag != DT_FLAGS)*/ \
232 *found_textrel = 1; \
233 /*if (dyn->d_un.d_val & DF_TEXTREL)*/ \
234 return (be_wewy_wewy_quiet ? NULL : ret); \
235 } \
236 ++dyn; \
237 } \
238 } }
239 SHOW_TEXTREL(32)
240 SHOW_TEXTREL(64)
241 }
242
243 if (be_quiet || be_wewy_wewy_quiet)
244 return NULL;
245 else
246 return (char *)" - ";
247 }
248 static char *scanelf_file_textrels(elfobj *elf, char *found_textrels, char *found_textrel)
249 {
250 unsigned long s, r, rmax;
251 void *symtab_void, *strtab_void, *text_void;
252
253 if (!show_textrels) return NULL;
254
255 /* don't search for TEXTREL's if the ELF doesn't have any */
256 if (!*found_textrel) scanelf_file_textrel(elf, found_textrel);
257 if (!*found_textrel) return NULL;
258
259 scanelf_file_get_symtabs(elf, &symtab_void, &strtab_void);
260 text_void = elf_findsecbyname(elf, ".text");
261
262 if (symtab_void && strtab_void && text_void && elf->shdr) {
263 #define SHOW_TEXTRELS(B) \
264 if (elf->elf_class == ELFCLASS ## B) { \
265 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
266 Elf ## B ## _Shdr *shdr = SHDR ## B (elf->shdr); \
267 Elf ## B ## _Shdr *symtab = SHDR ## B (symtab_void); \
268 Elf ## B ## _Shdr *strtab = SHDR ## B (strtab_void); \
269 Elf ## B ## _Shdr *text = SHDR ## B (text_void); \
270 Elf ## B ## _Addr vaddr = EGET(text->sh_addr); \
271 uint ## B ## _t memsz = EGET(text->sh_size); \
272 Elf ## B ## _Rel *rel; \
273 Elf ## B ## _Rela *rela; \
274 /* search the section headers for relocations */ \
275 for (s = 0; s < EGET(ehdr->e_shnum); ++s) { \
276 uint32_t sh_type = EGET(shdr[s].sh_type); \
277 if (sh_type == SHT_REL) { \
278 rel = REL ## B (elf->data + EGET(shdr[s].sh_offset)); \
279 rela = NULL; \
280 rmax = EGET(shdr[s].sh_size) / sizeof(*rel); \
281 } else if (sh_type == SHT_RELA) { \
282 rel = NULL; \
283 rela = RELA ## B (elf->data + EGET(shdr[s].sh_offset)); \
284 rmax = EGET(shdr[s].sh_size) / sizeof(*rela); \
285 } else \
286 continue; \
287 /* now see if any of the relocs are in the .text */ \
288 for (r = 0; r < rmax; ++r) { \
289 unsigned long sym_max; \
290 Elf ## B ## _Addr offset_tmp; \
291 Elf ## B ## _Sym *func; \
292 Elf ## B ## _Sym *sym; \
293 Elf ## B ## _Addr r_offset; \
294 uint ## B ## _t r_info; \
295 if (sh_type == SHT_REL) { \
296 r_offset = EGET(rel[r].r_offset); \
297 r_info = EGET(rel[r].r_info); \
298 } else { \
299 r_offset = EGET(rela[r].r_offset); \
300 r_info = EGET(rela[r].r_info); \
301 } \
302 /* make sure this relocation is inside of the .text */ \
303 if (r_offset < vaddr || r_offset >= vaddr + memsz) { \
304 if (be_verbose <= 2) continue; \
305 } else \
306 *found_textrels = 1; \
307 /* locate this relocation symbol name */ \
308 sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \
309 sym_max = ELF ## B ## _R_SYM(r_info); \
310 if (sym_max * EGET(symtab->sh_entsize) < symtab->sh_size) \
311 sym += sym_max; \
312 else \
313 sym = NULL; \
314 sym_max = EGET(symtab->sh_size) / EGET(symtab->sh_entsize); \
315 /* show the raw details about this reloc */ \
316 printf("\tTEXTREL %s: ", elf->base_filename); \
317 if (sym && sym->st_name) \
318 printf("%s", (char*)(elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name))); \
319 else \
320 printf("(NULL: fake?)"); \
321 printf(" [0x%lX]", (unsigned long)r_offset); \
322 /* now try to find the closest symbol that this rel is probably in */ \
323 sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \
324 func = NULL; \
325 offset_tmp = 0; \
326 while (sym_max--) { \
327 if (EGET(sym->st_value) < r_offset && EGET(sym->st_value) > offset_tmp) { \
328 func = sym; \
329 offset_tmp = EGET(sym->st_value); \
330 } \
331 ++sym; \
332 } \
333 printf(" in "); \
334 if (func && func->st_name) \
335 printf("%s", (char*)(elf->data + EGET(strtab->sh_offset) + EGET(func->st_name))); \
336 else \
337 printf("(NULL: fake?)"); \
338 printf(" [0x%lX]\n", (unsigned long)offset_tmp); \
339 } \
340 } }
341 SHOW_TEXTRELS(32)
342 SHOW_TEXTRELS(64)
343 }
344 if (!*found_textrels)
345 warnf("ELF %s has TEXTREL markings but doesnt appear to have any real TEXTREL's !?", elf->filename);
346
347 return NULL;
348 }
349
350 static void rpath_security_checks(elfobj *, char *);
351 static void rpath_security_checks(elfobj *elf, char *item) {
352 struct stat st;
353 switch(*item) {
354 case 0:
355 warnf("Security problem NULL RPATH in %s", elf->filename);
356 break;
357 case '/': break;
358 case '$':
359 if (fstat(elf->fd, &st) != (-1))
360 if ((st.st_mode & S_ISUID) || (st.st_mode & S_ISGID))
361 warnf("Security problem with RPATH='%s' in %s with mode set of %o",
362 item, elf->filename, st.st_mode & 07777);
363 break;
364 default:
365 warnf("Maybe? sec problem with RPATH='%s' in %s", item, elf->filename);
366 break;
367 }
368 }
369
370 static void scanelf_file_rpath(elfobj *elf, char *found_rpath, char **ret, size_t *ret_len)
371 {
372 unsigned long i, s;
373 char *rpath, *runpath, **r;
374 void *strtbl_void;
375
376 if (!show_rpath) return;
377
378 strtbl_void = elf_findsecbyname(elf, ".dynstr");
379 rpath = runpath = NULL;
380
381 if (elf->phdr && strtbl_void) {
382 #define SHOW_RPATH(B) \
383 if (elf->elf_class == ELFCLASS ## B) { \
384 Elf ## B ## _Dyn *dyn; \
385 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
386 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
387 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \
388 Elf ## B ## _Off offset; \
389 Elf ## B ## _Xword word; \
390 /* Scan all the program headers */ \
391 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
392 /* Just scan dynamic headers */ \
393 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \
394 offset = EGET(phdr[i].p_offset); \
395 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
396 /* Just scan dynamic RPATH/RUNPATH headers */ \
397 dyn = DYN ## B (elf->data + offset); \
398 while ((word=EGET(dyn->d_tag)) != DT_NULL) { \
399 if (word == DT_RPATH) { \
400 r = &rpath; \
401 } else if (word == DT_RUNPATH) { \
402 r = &runpath; \
403 } else { \
404 ++dyn; \
405 continue; \
406 } \
407 /* Verify the memory is somewhat sane */ \
408 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
409 if (offset < (Elf ## B ## _Off)elf->len) { \
410 if (*r) warn("ELF has multiple %s's !?", get_elfdtype(word)); \
411 *r = (char*)(elf->data + offset); \
412 /* If quiet, don't output paths in ld.so.conf */ \
413 if (be_quiet) { \
414 size_t len; \
415 char *start, *end; \
416 /* note that we only 'chop' off leading known paths. */ \
417 /* since *r is read-only memory, we can only move the ptr forward. */ \
418 start = *r; \
419 /* scan each path in : delimited list */ \
420 while (start) { \
421 rpath_security_checks(elf, start); \
422 end = strchr(start, ':'); \
423 len = (end ? abs(end - start) : strlen(start)); \
424 for (s = 0; ldpaths[s]; ++s) { \
425 if (!strncmp(ldpaths[s], start, len) && !ldpaths[s][len]) { \
426 *r = (end ? end + 1 : NULL); \
427 break; \
428 } \
429 } \
430 if (!*r || !ldpaths[s] || !end) \
431 start = NULL; \
432 else \
433 start = start + len + 1; \
434 } \
435 } \
436 if (*r) *found_rpath = 1; \
437 } \
438 ++dyn; \
439 } \
440 } }
441 SHOW_RPATH(32)
442 SHOW_RPATH(64)
443 }
444
445 if (be_wewy_wewy_quiet) return;
446
447 if (rpath && runpath) {
448 if (!strcmp(rpath, runpath)) {
449 xstrcat(ret, runpath, ret_len);
450 } else {
451 fprintf(stderr, "RPATH [%s] != RUNPATH [%s]\n", rpath, runpath);
452 xchrcat(ret, '{', ret_len);
453 xstrcat(ret, rpath, ret_len);
454 xchrcat(ret, ',', ret_len);
455 xstrcat(ret, runpath, ret_len);
456 xchrcat(ret, '}', ret_len);
457 }
458 } else if (rpath || runpath)
459 xstrcat(ret, (runpath ? runpath : rpath), ret_len);
460 else if (!be_quiet)
461 xstrcat(ret, " - ", ret_len);
462 }
463 static char *scanelf_file_needed_lib(elfobj *elf, char *found_needed, char *found_lib, int op, char **ret, size_t *ret_len)
464 {
465 unsigned long i;
466 char *needed;
467 void *strtbl_void;
468
469 if ((op==0 && !show_needed) || (op==1 && !find_lib)) return NULL;
470
471 strtbl_void = elf_findsecbyname(elf, ".dynstr");
472
473 if (elf->phdr && strtbl_void) {
474 #define SHOW_NEEDED(B) \
475 if (elf->elf_class == ELFCLASS ## B) { \
476 Elf ## B ## _Dyn *dyn; \
477 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
478 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
479 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \
480 Elf ## B ## _Off offset; \
481 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
482 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \
483 offset = EGET(phdr[i].p_offset); \
484 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
485 dyn = DYN ## B (elf->data + offset); \
486 while (EGET(dyn->d_tag) != DT_NULL) { \
487 if (EGET(dyn->d_tag) == DT_NEEDED) { \
488 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
489 if (offset >= (Elf ## B ## _Off)elf->len) { \
490 ++dyn; \
491 continue; \
492 } \
493 needed = (char*)(elf->data + offset); \
494 if (op == 0) { \
495 if (!be_wewy_wewy_quiet) { \
496 if (*found_needed) xchrcat(ret, ',', ret_len); \
497 xstrcat(ret, needed, ret_len); \
498 } \
499 *found_needed = 1; \
500 } else { \
501 if (!strcmp(find_lib, needed)) { \
502 *found_lib = 1; \
503 return (be_wewy_wewy_quiet ? NULL : find_lib); \
504 } \
505 } \
506 } \
507 ++dyn; \
508 } \
509 } }
510 SHOW_NEEDED(32)
511 SHOW_NEEDED(64)
512 }
513
514 return NULL;
515 }
516 static char *scanelf_file_interp(elfobj *elf, char *found_interp)
517 {
518 void *strtbl_void;
519
520 if (!show_interp) return NULL;
521
522 strtbl_void = elf_findsecbyname(elf, ".interp");
523
524 if (strtbl_void) {
525 #define SHOW_INTERP(B) \
526 if (elf->elf_class == ELFCLASS ## B) { \
527 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \
528 *found_interp = 1; \
529 return (be_wewy_wewy_quiet ? NULL : elf->data + EGET(strtbl->sh_offset)); \
530 }
531 SHOW_INTERP(32)
532 SHOW_INTERP(64)
533 }
534 return NULL;
535 }
536 static char *scanelf_file_bind(elfobj *elf, char *found_bind)
537 {
538 unsigned long i;
539 struct stat s;
540
541 if (!show_bind) return NULL;
542 if (!elf->phdr) return NULL;
543
544 #define SHOW_BIND(B) \
545 if (elf->elf_class == ELFCLASS ## B) { \
546 Elf ## B ## _Dyn *dyn; \
547 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
548 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
549 Elf ## B ## _Off offset; \
550 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
551 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \
552 offset = EGET(phdr[i].p_offset); \
553 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
554 dyn = DYN ## B (elf->data + offset); \
555 while (EGET(dyn->d_tag) != DT_NULL) { \
556 if (EGET(dyn->d_tag) == DT_BIND_NOW || \
557 (EGET(dyn->d_tag) == DT_FLAGS && EGET(dyn->d_un.d_val) & DF_BIND_NOW)) \
558 { \
559 if (be_quiet) return NULL; \
560 *found_bind = 1; \
561 return (char *)(be_wewy_wewy_quiet ? NULL : "NOW"); \
562 } \
563 ++dyn; \
564 } \
565 } \
566 }
567 SHOW_BIND(32)
568 SHOW_BIND(64)
569
570 if (be_wewy_wewy_quiet) return NULL;
571
572 if (be_quiet && !fstat(elf->fd, &s) && !(s.st_mode & S_ISUID || s.st_mode & S_ISGID)) {
573 return NULL;
574 } else {
575 *found_bind = 1;
576 return (char *) "LAZY";
577 }
578 }
579 static char *scanelf_file_sym(elfobj *elf, char *found_sym)
580 {
581 unsigned long i;
582 void *symtab_void, *strtab_void;
583
584 if (!find_sym) return NULL;
585
586 scanelf_file_get_symtabs(elf, &symtab_void, &strtab_void);
587
588 if (symtab_void && strtab_void) {
589 #define FIND_SYM(B) \
590 if (elf->elf_class == ELFCLASS ## B) { \
591 Elf ## B ## _Shdr *symtab = SHDR ## B (symtab_void); \
592 Elf ## B ## _Shdr *strtab = SHDR ## B (strtab_void); \
593 Elf ## B ## _Sym *sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \
594 unsigned long cnt = EGET(symtab->sh_size) / EGET(symtab->sh_entsize); \
595 char *symname; \
596 for (i = 0; i < cnt; ++i) { \
597 if (sym->st_name) { \
598 symname = (char *)(elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name)); \
599 if (*find_sym == '*') { \
600 printf("%s(%s) %5lX %15s %s\n", \
601 ((*found_sym == 0) ? "\n\t" : "\t"), \
602 elf->base_filename, \
603 (long)sym->st_size, \
604 (char *)get_elfstttype(sym->st_info), \
605 symname); \
606 *found_sym = 1; \
607 } else if ((strcmp(find_sym, symname) == 0) || \
608 (strcmp(symname, versioned_symname) == 0)) \
609 (*found_sym)++; \
610 } \
611 ++sym; \
612 } }
613 FIND_SYM(32)
614 FIND_SYM(64)
615 }
616
617 if (be_wewy_wewy_quiet) return NULL;
618
619 if (*find_sym != '*' && *found_sym)
620 return find_sym;
621 if (be_quiet)
622 return NULL;
623 else
624 return (char *)" - ";
625 }
626 /* scan an elf file and show all the fun stuff */
627 #define prints(str) write(fileno(stdout), str, strlen(str))
628 static void scanelf_file(const char *filename)
629 {
630 unsigned long i;
631 char found_pax, found_phdr, found_relro, found_load, found_textrel,
632 found_rpath, found_needed, found_interp, found_bind,
633 found_sym, found_lib, found_file, found_textrels;
634 elfobj *elf;
635 struct stat st;
636 static char *out_buffer = NULL;
637 static size_t out_len;
638
639 /* make sure 'filename' exists */
640 if (lstat(filename, &st) == -1) {
641 if (be_verbose > 2) printf("%s: does not exist\n", filename);
642 return;
643 }
644 /* always handle regular files and handle symlinked files if no -y */
645 if (S_ISLNK(st.st_mode)) {
646 if (!scan_symlink) return;
647 stat(filename, &st);
648 }
649 if (!S_ISREG(st.st_mode)) {
650 if (be_verbose > 2) printf("%s: skipping non-file\n", filename);
651 return;
652 }
653
654 found_pax = found_phdr = found_relro = found_load = found_textrel = \
655 found_rpath = found_needed = found_interp = found_bind = \
656 found_sym = found_lib = found_file = found_textrels = 0;
657
658 /* verify this is real ELF */
659 if ((elf = readelf(filename)) == NULL) {
660 if (be_verbose > 2) printf("%s: not an ELF\n", filename);
661 return;
662 }
663
664 if (be_verbose > 1)
665 printf("%s: scanning file {%s,%s}\n", filename,
666 get_elfeitype(EI_CLASS, elf->elf_class),
667 get_elfeitype(EI_DATA, elf->data[EI_DATA]));
668 else if (be_verbose)
669 printf("%s: scanning file\n", filename);
670
671 /* init output buffer */
672 if (!out_buffer) {
673 out_len = sizeof(char) * 80;
674 out_buffer = (char*)xmalloc(out_len);
675 }
676 *out_buffer = '\0';
677
678 /* show the header */
679 if (!be_quiet && show_banner) {
680 for (i = 0; out_format[i]; ++i) {
681 if (!IS_MODIFIER(out_format[i])) continue;
682
683 switch (out_format[++i]) {
684 case '%': break;
685 case '#': break;
686 case 'F':
687 case 'p':
688 case 'f': prints("FILE "); found_file = 1; break;
689 case 'o': prints(" TYPE "); break;
690 case 'x': prints(" PAX "); break;
691 case 'e': prints("STK/REL/PTL "); break;
692 case 't': prints("TEXTREL "); break;
693 case 'r': prints("RPATH "); break;
694 case 'n': prints("NEEDED "); break;
695 case 'i': prints("INTERP "); break;
696 case 'b': prints("BIND "); break;
697 case 's': prints("SYM "); break;
698 case 'N': prints("LIB "); break;
699 case 'T': prints("TEXTRELS "); break;
700 default: warnf("'%c' has no title ?", out_format[i]);
701 }
702 }
703 if (!found_file) prints("FILE ");
704 prints("\n");
705 found_file = 0;
706 show_banner = 0;
707 }
708
709 /* dump all the good stuff */
710 for (i = 0; out_format[i]; ++i) {
711 const char *out;
712 const char *tmp;
713
714 /* make sure we trim leading spaces in quiet mode */
715 if (be_quiet && *out_buffer == ' ' && !out_buffer[1])
716 *out_buffer = '\0';
717
718 if (!IS_MODIFIER(out_format[i])) {
719 xchrcat(&out_buffer, out_format[i], &out_len);
720 continue;
721 }
722
723 out = NULL;
724 be_wewy_wewy_quiet = (out_format[i] == '#');
725 switch (out_format[++i]) {
726 case '%':
727 case '#':
728 xchrcat(&out_buffer, out_format[i], &out_len); break;
729 case 'F':
730 found_file = 1;
731 if (be_wewy_wewy_quiet) break;
732 xstrcat(&out_buffer, filename, &out_len);
733 break;
734 case 'p':
735 found_file = 1;
736 if (be_wewy_wewy_quiet) break;
737 tmp = filename;
738 if (search_path) {
739 ssize_t len_search = strlen(search_path);
740 ssize_t len_file = strlen(filename);
741 if (!strncmp(filename, search_path, len_search) && \
742 len_file > len_search)
743 tmp += len_search;
744 if (*tmp == '/' && search_path[len_search-1] == '/') tmp++;
745 }
746 xstrcat(&out_buffer, tmp, &out_len);
747 break;
748 case 'f':
749 found_file = 1;
750 if (be_wewy_wewy_quiet) break;
751 tmp = strrchr(filename, '/');
752 tmp = (tmp == NULL ? filename : tmp+1);
753 xstrcat(&out_buffer, tmp, &out_len);
754 break;
755 case 'o': out = get_elfetype(elf); break;
756 case 'x': out = scanelf_file_pax(elf, &found_pax); break;
757 case 'e': out = scanelf_file_phdr(elf, &found_phdr, &found_relro, &found_load); break;
758 case 't': out = scanelf_file_textrel(elf, &found_textrel); break;
759 case 'T': out = scanelf_file_textrels(elf, &found_textrels, &found_textrel); break;
760 case 'r': scanelf_file_rpath(elf, &found_rpath, &out_buffer, &out_len); break;
761 case 'n':
762 case 'N': out = scanelf_file_needed_lib(elf, &found_needed, &found_lib, (out_format[i]=='N'), &out_buffer, &out_len); break;
763 case 'i': out = scanelf_file_interp(elf, &found_interp); break;
764 case 'b': out = scanelf_file_bind(elf, &found_bind); break;
765 case 's': out = scanelf_file_sym(elf, &found_sym); break;
766 default: warnf("'%c' has no scan code?", out_format[i]);
767 }
768 if (out) xstrcat(&out_buffer, out, &out_len);
769 }
770
771 #define FOUND_SOMETHING() \
772 (found_pax || found_phdr || found_relro || found_load || found_textrel || \
773 found_rpath || found_needed || found_interp || found_bind || \
774 found_sym || found_lib || found_textrels)
775
776 if (!found_file && (!be_quiet || (be_quiet && FOUND_SOMETHING()))) {
777 xchrcat(&out_buffer, ' ', &out_len);
778 xstrcat(&out_buffer, filename, &out_len);
779 }
780 if (!be_quiet || (be_quiet && FOUND_SOMETHING())) {
781 puts(out_buffer);
782 fflush(stdout);
783 }
784
785 unreadelf(elf);
786 }
787
788 /* scan a directory for ET_EXEC files and print when we find one */
789 static void scanelf_dir(const char *path)
790 {
791 register DIR *dir;
792 register struct dirent *dentry;
793 struct stat st_top, st;
794 char buf[_POSIX_PATH_MAX];
795 size_t pathlen = 0, len = 0;
796
797 /* make sure path exists */
798 if (lstat(path, &st_top) == -1) {
799 if (be_verbose > 2) printf("%s: does not exist\n", path);
800 return;
801 }
802
803 /* ok, if it isn't a directory, assume we can open it */
804 if (!S_ISDIR(st_top.st_mode)) {
805 scanelf_file(path);
806 return;
807 }
808
809 /* now scan the dir looking for fun stuff */
810 if ((dir = opendir(path)) == NULL) {
811 warnf("could not opendir %s: %s", path, strerror(errno));
812 return;
813 }
814 if (be_verbose) printf("%s: scanning dir\n", path);
815
816 pathlen = strlen(path);
817 while ((dentry = readdir(dir))) {
818 if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
819 continue;
820 len = (pathlen + 1 + strlen(dentry->d_name) + 1);
821 if (len >= sizeof(buf)) {
822 warnf("Skipping '%s': len > sizeof(buf); %lu > %lu\n", path,
823 (unsigned long)len, (unsigned long)sizeof(buf));
824 continue;
825 }
826 sprintf(buf, "%s/%s", path, dentry->d_name);
827 if (lstat(buf, &st) != -1) {
828 if (S_ISREG(st.st_mode))
829 scanelf_file(buf);
830 else if (dir_recurse && S_ISDIR(st.st_mode)) {
831 if (dir_crossmount || (st_top.st_dev == st.st_dev))
832 scanelf_dir(buf);
833 }
834 }
835 }
836 closedir(dir);
837 }
838
839 static int scanelf_from_file(char *filename)
840 {
841 FILE *fp = NULL;
842 char *p;
843 char path[_POSIX_PATH_MAX];
844
845 if (((strcmp(filename, "-")) == 0) && (ttyname(0) == NULL))
846 fp = stdin;
847 else if ((fp = fopen(filename, "r")) == NULL)
848 return 1;
849
850 while ((fgets(path, _POSIX_PATH_MAX, fp)) != NULL) {
851 if ((p = strchr(path, '\n')) != NULL)
852 *p = 0;
853 search_path = path;
854 scanelf_dir(path);
855 }
856 if (fp != stdin)
857 fclose(fp);
858 return 0;
859 }
860
861 static void load_ld_so_conf()
862 {
863 FILE *fp = NULL;
864 char *p;
865 char path[_POSIX_PATH_MAX];
866 int i = 0;
867
868 if ((fp = fopen("/etc/ld.so.conf", "r")) == NULL)
869 return;
870
871 while ((fgets(path, _POSIX_PATH_MAX, fp)) != NULL) {
872 if (*path != '/')
873 continue;
874
875 if ((p = strrchr(path, '\r')) != NULL)
876 *p = 0;
877 if ((p = strchr(path, '\n')) != NULL)
878 *p = 0;
879
880 ldpaths[i++] = xstrdup(path);
881
882 if (i + 1 == sizeof(ldpaths) / sizeof(*ldpaths))
883 break;
884 }
885 ldpaths[i] = NULL;
886
887 fclose(fp);
888 }
889
890 /* scan /etc/ld.so.conf for paths */
891 static void scanelf_ldpath()
892 {
893 char scan_l, scan_ul, scan_ull;
894 int i = 0;
895
896 if (!ldpaths[0])
897 err("Unable to load any paths from ld.so.conf");
898
899 scan_l = scan_ul = scan_ull = 0;
900
901 while (ldpaths[i]) {
902 if (!scan_l && !strcmp(ldpaths[i], "/lib")) scan_l = 1;
903 if (!scan_ul && !strcmp(ldpaths[i], "/usr/lib")) scan_ul = 1;
904 if (!scan_ull && !strcmp(ldpaths[i], "/usr/local/lib")) scan_ull = 1;
905 scanelf_dir(ldpaths[i]);
906 ++i;
907 }
908
909 if (!scan_l) scanelf_dir("/lib");
910 if (!scan_ul) scanelf_dir("/usr/lib");
911 if (!scan_ull) scanelf_dir("/usr/local/lib");
912 }
913
914 /* scan env PATH for paths */
915 static void scanelf_envpath()
916 {
917 char *path, *p;
918
919 path = getenv("PATH");
920 if (!path)
921 err("PATH is not set in your env !");
922 path = xstrdup(path);
923
924 while ((p = strrchr(path, ':')) != NULL) {
925 scanelf_dir(p + 1);
926 *p = 0;
927 }
928
929 free(path);
930 }
931
932
933
934 /* usage / invocation handling functions */
935 #define PARSE_FLAGS "plRmyxetrnibs:N:TaqvF:f:o:BhV"
936 #define a_argument required_argument
937 static struct option const long_opts[] = {
938 {"path", no_argument, NULL, 'p'},
939 {"ldpath", no_argument, NULL, 'l'},
940 {"recursive", no_argument, NULL, 'R'},
941 {"mount", no_argument, NULL, 'm'},
942 {"symlink", no_argument, NULL, 'y'},
943 {"pax", no_argument, NULL, 'x'},
944 {"header", no_argument, NULL, 'e'},
945 {"textrel", no_argument, NULL, 't'},
946 {"rpath", no_argument, NULL, 'r'},
947 {"needed", no_argument, NULL, 'n'},
948 {"interp", no_argument, NULL, 'i'},
949 {"bind", no_argument, NULL, 'b'},
950 {"symbol", a_argument, NULL, 's'},
951 {"lib", a_argument, NULL, 'N'},
952 {"textrels", no_argument, NULL, 'T'},
953 {"all", no_argument, NULL, 'a'},
954 {"quiet", no_argument, NULL, 'q'},
955 {"verbose", no_argument, NULL, 'v'},
956 {"format", a_argument, NULL, 'F'},
957 {"from", a_argument, NULL, 'f'},
958 {"file", a_argument, NULL, 'o'},
959 {"nobanner", no_argument, NULL, 'B'},
960 {"help", no_argument, NULL, 'h'},
961 {"version", no_argument, NULL, 'V'},
962 {NULL, no_argument, NULL, 0x0}
963 };
964
965 static const char *opts_help[] = {
966 "Scan all directories in PATH environment",
967 "Scan all directories in /etc/ld.so.conf",
968 "Scan directories recursively",
969 "Don't recursively cross mount points",
970 "Don't scan symlinks\n",
971 "Print PaX markings",
972 "Print GNU_STACK/PT_LOAD markings",
973 "Print TEXTREL information",
974 "Print RPATH information",
975 "Print NEEDED information",
976 "Print INTERP information",
977 "Print BIND information",
978 "Find a specified symbol",
979 "Find a specified library",
980 "Locate cause of TEXTREL",
981 "Print all scanned info (-x -e -t -r -b)\n",
982 "Only output 'bad' things",
983 "Be verbose (can be specified more than once)",
984 "Use specified format for output",
985 "Read input stream from a filename",
986 "Write output stream to a filename",
987 "Don't display the header",
988 "Print this help and exit",
989 "Print version and exit",
990 NULL
991 };
992
993 /* display usage and exit */
994 static void usage(int status)
995 {
996 unsigned long i;
997 printf("* Scan ELF binaries for stuff\n\n"
998 "Usage: %s [options] <dir1/file1> [dir2 dirN fileN ...]\n\n", argv0);
999 printf("Options: -[%s]\n", PARSE_FLAGS);
1000 for (i = 0; long_opts[i].name; ++i)
1001 if (long_opts[i].has_arg == no_argument)
1002 printf(" -%c, --%-13s* %s\n", long_opts[i].val,
1003 long_opts[i].name, opts_help[i]);
1004 else
1005 printf(" -%c, --%-6s <arg> * %s\n", long_opts[i].val,
1006 long_opts[i].name, opts_help[i]);
1007
1008 if (status != EXIT_SUCCESS)
1009 exit(status);
1010
1011 puts("\nThe format modifiers for the -F option are:");
1012 puts(" F Filename \tx PaX Flags \te STACK/RELRO");
1013 puts(" t TEXTREL \tr RPATH \tn NEEDED");
1014 puts(" i INTERP \tb BIND \ts symbol");
1015 puts(" N library \to Type \tT TEXTRELs");
1016 puts(" p filename (with search path removed)");
1017 puts(" f base filename");
1018 puts("Prefix each modifier with '%' (verbose) or '#' (silent)");
1019
1020 exit(status);
1021 }
1022
1023 /* parse command line arguments and preform needed actions */
1024 static void parseargs(int argc, char *argv[])
1025 {
1026 int i;
1027 char *from_file = NULL;
1028
1029 opterr = 0;
1030 while ((i=getopt_long(argc, argv, PARSE_FLAGS, long_opts, NULL)) != -1) {
1031 switch (i) {
1032
1033 case 'V':
1034 printf("pax-utils-%s: %s compiled %s\n%s\n"
1035 "%s written for Gentoo by <solar and vapier @ gentoo.org>\n",
1036 VERSION, __FILE__, __DATE__, rcsid, argv0);
1037 exit(EXIT_SUCCESS);
1038 break;
1039 case 'h': usage(EXIT_SUCCESS); break;
1040 case 'f':
1041 if (from_file) err("Don't specify -f twice");
1042 from_file = xstrdup(optarg);
1043 break;
1044 case 'o': {
1045 FILE *fp = NULL;
1046 if ((fp = freopen(optarg, "w", stdout)) == NULL)
1047 err("Could not open output stream '%s': %s", optarg, strerror(errno));
1048 SET_STDOUT(fp);
1049 break;
1050 }
1051
1052 case 's': {
1053 size_t len;
1054 if (find_sym) err("Don't specify -s twice");
1055 find_sym = xstrdup(optarg);
1056 len = strlen(find_sym) + 1;
1057 versioned_symname = (char*)xmalloc(sizeof(char) * (len+1));
1058 sprintf(versioned_symname, "%s@", find_sym);
1059 break;
1060 }
1061 case 'N': {
1062 if (find_lib) err("Don't specify -N twice");
1063 find_lib = xstrdup(optarg);
1064 break;
1065 }
1066
1067 case 'F': {
1068 if (out_format) err("Don't specify -F twice");
1069 out_format = xstrdup(optarg);
1070 break;
1071 }
1072
1073 case 'y': scan_symlink = 0; break;
1074 case 'B': show_banner = 0; break;
1075 case 'l': scan_ldpath = 1; break;
1076 case 'p': scan_envpath = 1; break;
1077 case 'R': dir_recurse = 1; break;
1078 case 'm': dir_crossmount = 0; break;
1079 case 'x': show_pax = 1; break;
1080 case 'e': show_phdr = 1; break;
1081 case 't': show_textrel = 1; break;
1082 case 'r': show_rpath = 1; break;
1083 case 'n': show_needed = 1; break;
1084 case 'i': show_interp = 1; break;
1085 case 'b': show_bind = 1; break;
1086 case 'T': show_textrels = 1; break;
1087 case 'q': be_quiet = 1; break;
1088 case 'v': be_verbose = (be_verbose % 20) + 1; break;
1089 case 'a': show_pax = show_phdr = show_textrel = show_rpath = show_bind = 1; break;
1090
1091 case ':':
1092 err("Option missing parameter\n");
1093 case '?':
1094 err("Unknown option\n");
1095 default:
1096 err("Unhandled option '%c'", i);
1097 }
1098 }
1099
1100 /* let the format option override all other options */
1101 if (out_format) {
1102 show_pax = show_phdr = show_textrel = show_rpath = \
1103 show_needed = show_interp = show_bind = show_textrels = 0;
1104 for (i = 0; out_format[i]; ++i) {
1105 if (!IS_MODIFIER(out_format[i])) continue;
1106
1107 switch (out_format[++i]) {
1108 case '%': break;
1109 case '#': break;
1110 case 'F': break;
1111 case 'p': break;
1112 case 'f': break;
1113 case 's': break;
1114 case 'N': break;
1115 case 'o': break;
1116 case 'x': show_pax = 1; break;
1117 case 'e': show_phdr = 1; break;
1118 case 't': show_textrel = 1; break;
1119 case 'r': show_rpath = 1; break;
1120 case 'n': show_needed = 1; break;
1121 case 'i': show_interp = 1; break;
1122 case 'b': show_bind = 1; break;
1123 case 'T': show_textrels = 1; break;
1124 default:
1125 err("Invalid format specifier '%c' (byte %i)",
1126 out_format[i], i+1);
1127 }
1128 }
1129
1130 /* construct our default format */
1131 } else {
1132 size_t fmt_len = 30;
1133 out_format = (char*)xmalloc(sizeof(char) * fmt_len);
1134 if (!be_quiet) xstrcat(&out_format, "%o ", &fmt_len);
1135 if (show_pax) xstrcat(&out_format, "%x ", &fmt_len);
1136 if (show_phdr) xstrcat(&out_format, "%e ", &fmt_len);
1137 if (show_textrel) xstrcat(&out_format, "%t ", &fmt_len);
1138 if (show_rpath) xstrcat(&out_format, "%r ", &fmt_len);
1139 if (show_needed) xstrcat(&out_format, "%n ", &fmt_len);
1140 if (show_interp) xstrcat(&out_format, "%i ", &fmt_len);
1141 if (show_bind) xstrcat(&out_format, "%b ", &fmt_len);
1142 if (show_textrels) xstrcat(&out_format, "%T ", &fmt_len);
1143 if (find_sym) xstrcat(&out_format, "%s ", &fmt_len);
1144 if (find_lib) xstrcat(&out_format, "%N ", &fmt_len);
1145 if (!be_quiet) xstrcat(&out_format, "%F ", &fmt_len);
1146 }
1147 if (be_verbose > 2) printf("Format: %s\n", out_format);
1148
1149 /* now lets actually do the scanning */
1150 if (scan_ldpath || (show_rpath && be_quiet))
1151 load_ld_so_conf();
1152 if (scan_ldpath) scanelf_ldpath();
1153 if (scan_envpath) scanelf_envpath();
1154 if (from_file) {
1155 scanelf_from_file(from_file);
1156 free(from_file);
1157 from_file = *argv;
1158 }
1159 if (optind == argc && !scan_ldpath && !scan_envpath && !from_file)
1160 err("Nothing to scan !?");
1161 while (optind < argc) {
1162 search_path = argv[optind++];
1163 scanelf_dir(search_path);
1164 }
1165
1166 /* clean up */
1167 if (find_sym) {
1168 free(find_sym);
1169 free(versioned_symname);
1170 }
1171 if (find_lib) free(find_lib);
1172 if (out_format) free(out_format);
1173 for (i = 0; ldpaths[i]; ++i)
1174 free(ldpaths[i]);
1175 }
1176
1177
1178
1179 /* utility funcs */
1180 static char *xstrdup(const char *s)
1181 {
1182 char *ret = strdup(s);
1183 if (!ret) err("Could not strdup(): %s", strerror(errno));
1184 return ret;
1185 }
1186
1187 static void *xmalloc(size_t size)
1188 {
1189 void *ret = malloc(size);
1190 if (!ret) err("Could not malloc() %li bytes", (unsigned long)size);
1191 return ret;
1192 }
1193
1194 static void xstrcat(char **dst, const char *src, size_t *curr_len)
1195 {
1196 size_t new_len;
1197
1198 new_len = strlen(*dst) + strlen(src);
1199 if (*curr_len <= new_len) {
1200 *curr_len = new_len + (*curr_len / 2);
1201 *dst = realloc(*dst, *curr_len);
1202 if (!*dst)
1203 err("could not realloc %li bytes", (unsigned long)*curr_len);
1204 }
1205
1206 strcat(*dst, src);
1207 }
1208
1209 static inline void xchrcat(char **dst, const char append, size_t *curr_len)
1210 {
1211 static char my_app[2];
1212 my_app[0] = append;
1213 my_app[1] = '\0';
1214 xstrcat(dst, my_app, curr_len);
1215 }
1216
1217
1218
1219 int main(int argc, char *argv[])
1220 {
1221 if (argc < 2)
1222 usage(EXIT_FAILURE);
1223 parseargs(argc, argv);
1224 fclose(stdout);
1225 #ifdef __BOUNDS_CHECKING_ON
1226 warn("The calls to add/delete heap should be off by 1 due to the out_buffer not being freed in scanelf_file()");
1227 #endif
1228 return EXIT_SUCCESS;
1229 }

  ViewVC Help
Powered by ViewVC 1.1.20