contrib/elftoolchain/size/size.c

   1 /*-
   2  * Copyright (c) 2007 S.Sam Arun Raj
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <assert.h>
  28 #include <err.h>
  29 #include <fcntl.h>
  30 #include <gelf.h>
  31 #include <getopt.h>
  32 #include <libelftc.h>
  33 #include <stdint.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38
  39 #include "_elftc.h"
  40
  41 ELFTC_VCSID("$Id: size.c 3183 2015-04-10 16:18:42Z emaste $");
  42
  43 #define BUF_SIZE                        1024
  44 #define ELF_ALIGN(val,x) (((val)+(x)-1) & ~((x)-1))
  45 #define SIZE_VERSION_STRING             "size 1.0"
  46
  47 enum return_code {
  48         RETURN_OK,
  49         RETURN_NOINPUT,
  50         RETURN_DATAERR,
  51         RETURN_USAGE
  52 };
  53
  54 enum output_style {
  55         STYLE_BERKELEY,
  56         STYLE_SYSV
  57 };
  58
  59 enum radix_style {
  60         RADIX_OCTAL,
  61         RADIX_DECIMAL,
  62         RADIX_HEX
  63 };
  64
  65 static uint64_t bss_size, data_size, text_size, total_size;
  66 static uint64_t bss_size_total, data_size_total, text_size_total;
  67 static int show_totals;
  68 static int size_option;
  69 static enum radix_style radix = RADIX_DECIMAL;
  70 static enum output_style style = STYLE_BERKELEY;
  71 static const char *default_args[2] = { "a.out", NULL };
  72
  73 static struct {
  74         int row;
  75         int col;
  76         int *width;
  77         char ***tbl;
  78 } *tb;
  79
  80 enum {
  81         OPT_FORMAT,
  82         OPT_RADIX
  83 };
  84
  85 static struct option size_longopts[] = {
  86         { "format",     required_argument, &size_option, OPT_FORMAT },
  87         { "help",       no_argument,    NULL,   'h' },
  88         { "radix",      required_argument, &size_option, OPT_RADIX },
  89         { "totals",     no_argument,    NULL,   't' },
  90         { "version",    no_argument,    NULL,   'V' },
  91         { NULL, 0, NULL, 0 }
  92 };
  93
  94 static void     berkeley_calc(GElf_Shdr *);
  95 static void     berkeley_footer(const char *, const char *, const char *);
  96 static void     berkeley_header(void);
  97 static void     berkeley_totals(void);
  98 static int      handle_core(char const *, Elf *elf, GElf_Ehdr *);
  99 static void     handle_core_note(Elf *, GElf_Ehdr *, GElf_Phdr *, char **);
 100 static int      handle_elf(char const *);
 101 static void     handle_phdr(Elf *, GElf_Ehdr *, GElf_Phdr *, uint32_t,
 102                     const char *);
 103 static void     show_version(void);
 104 static void     sysv_header(const char *, Elf_Arhdr *);
 105 static void     sysv_footer(void);
 106 static void     sysv_calc(Elf *, GElf_Ehdr *, GElf_Shdr *);
 107 static void     usage(void);
 108 static void     tbl_new(int);
 109 static void     tbl_print(const char *, int);
 110 static void     tbl_print_num(uint64_t, enum radix_style, int);
 111 static void     tbl_append(void);
 112 static void     tbl_flush(void);
 113
 114 /*
 115  * size utility using elf(3) and gelf(3) API to list section sizes and
 116  * total in elf files. Supports only elf files (core dumps in elf
 117  * included) that can be opened by libelf, other formats are not supported.
 118  */
 119 int
 120 main(int argc, char **argv)
 121 {
 122         int ch, r, rc;
 123         const char **files, *fn;
 124
 125         rc = RETURN_OK;
 126
 127         if (elf_version(EV_CURRENT) == EV_NONE)
 128                 errx(EXIT_FAILURE, "ELF library initialization failed: %s",
 129                     elf_errmsg(-1));
 130
 131         while ((ch = getopt_long(argc, argv, "ABVdhotx", size_longopts,
 132             NULL)) != -1)
 133                 switch((char)ch) {
 134                 case 'A':
 135                         style = STYLE_SYSV;
 136                         break;
 137                 case 'B':
 138                         style = STYLE_BERKELEY;
 139                         break;
 140                 case 'V':
 141                         show_version();
 142                         break;
 143                 case 'd':
 144                         radix = RADIX_DECIMAL;
 145                         break;
 146                 case 'o':
 147                         radix = RADIX_OCTAL;
 148                         break;
 149                 case 't':
 150                         show_totals = 1;
 151                         break;
 152                 case 'x':
 153                         radix = RADIX_HEX;
 154                         break;
 155                 case 0:
 156                         switch (size_option) {
 157                         case OPT_FORMAT:
 158                                 if (*optarg == 's' || *optarg == 'S')
 159                                         style = STYLE_SYSV;
 160                                 else if (*optarg == 'b' || *optarg == 'B')
 161                                         style = STYLE_BERKELEY;
 162                                 else {
 163                                         warnx("unrecognized format \"%s\".",
 164                                               optarg);
 165                                         usage();
 166                                 }
 167                                 break;
 168                         case OPT_RADIX:
 169                                 r = strtol(optarg, NULL, 10);
 170                                 if (r == 8)
 171                                         radix = RADIX_OCTAL;
 172                                 else if (r == 10)
 173                                         radix = RADIX_DECIMAL;
 174                                 else if (r == 16)
 175                                         radix = RADIX_HEX;
 176                                 else {
 177                                         warnx("unsupported radix \"%s\".",
 178                                               optarg);
 179                                         usage();
 180                                 }
 181                                 break;
 182                         default:
 183                                 err(EXIT_FAILURE, "Error in option handling.");
 184                                 /*NOTREACHED*/
 185                         }
 186                         break;
 187                 case 'h':
 188                 case '?':
 189                 default:
 190                         usage();
 191                         /* NOTREACHED */
 192                 }
 193         argc -= optind;
 194         argv += optind;
 195
 196         files = (argc == 0) ? default_args : (void *) argv;
 197
 198         while ((fn = *files) != NULL) {
 199                 rc = handle_elf(fn);
 200                 if (rc != RETURN_OK)
 201                         warnx(rc == RETURN_NOINPUT ?
 202                               "'%s': No such file" :
 203                               "%s: File format not recognized", fn);
 204                 files++;
 205         }
 206         if (style == STYLE_BERKELEY) {
 207                 if (show_totals)
 208                         berkeley_totals();
 209                 tbl_flush();
 210         }
 211         return (rc);
 212 }
 213
 214 static Elf_Data *
 215 xlatetom(Elf *elf, GElf_Ehdr *elfhdr, void *_src, void *_dst,
 216     Elf_Type type, size_t size)
 217 {
 218         Elf_Data src, dst;
 219
 220         src.d_buf = _src;
 221         src.d_type = type;
 222         src.d_version = elfhdr->e_version;
 223         src.d_size = size;
 224         dst.d_buf = _dst;
 225         dst.d_version = elfhdr->e_version;
 226         dst.d_size = size;
 227         return (gelf_xlatetom(elf, &dst, &src, elfhdr->e_ident[EI_DATA]));
 228 }
 229
 230 #define NOTE_OFFSET_32(nhdr, namesz, offset)                    \
 231         ((char *)nhdr + sizeof(Elf32_Nhdr) +                    \
 232             ELF_ALIGN((int32_t)namesz, 4) + offset)
 233
 234 #define NOTE_OFFSET_64(nhdr, namesz, offset)                    \
 235         ((char *)nhdr + sizeof(Elf32_Nhdr) +                    \
 236             ELF_ALIGN((int32_t)namesz, 8) + offset)
 237
 238 #define PID32(nhdr, namesz, offset)                             \
 239         (pid_t)*((int *)((uintptr_t)NOTE_OFFSET_32(nhdr,        \
 240             namesz, offset)));
 241
 242 #define PID64(nhdr, namesz, offset)                             \
 243         (pid_t)*((int *)((uintptr_t)NOTE_OFFSET_64(nhdr,        \
 244             namesz, offset)));
 245
 246 #define NEXT_NOTE(elfhdr, descsz, namesz, offset) do {          \
 247         if (elfhdr->e_ident[EI_CLASS] == ELFCLASS32) {          \
 248                 offset += ELF_ALIGN((int32_t)descsz, 4) +       \
 249                     sizeof(Elf32_Nhdr) +                        \
 250                         ELF_ALIGN((int32_t)namesz, 4);          \
 251         } else {                                                \
 252                 offset += ELF_ALIGN((int32_t)descsz, 8) +       \
 253                     sizeof(Elf32_Nhdr) +                        \
 254                         ELF_ALIGN((int32_t)namesz, 8);          \
 255         }                                                       \
 256 } while (0)
 257
 258 /*
 259  * Parse individual note entries inside a PT_NOTE segment.
 260  */
 261 static void
 262 handle_core_note(Elf *elf, GElf_Ehdr *elfhdr, GElf_Phdr *phdr,
 263     char **cmd_line)
 264 {
 265         size_t max_size;
 266         uint64_t raw_size;
 267         GElf_Off offset;
 268         static pid_t pid;
 269         uintptr_t ver;
 270         Elf32_Nhdr *nhdr, nhdr_l;
 271         static int reg_pseudo = 0, reg2_pseudo = 0 /*, regxfp_pseudo = 0*/;
 272         char buf[BUF_SIZE], *data, *name;
 273
 274         if (elf == NULL || elfhdr == NULL || phdr == NULL)
 275                 return;
 276
 277         data = elf_rawfile(elf, &max_size);
 278         offset = phdr->p_offset;
 279         while (data != NULL && offset < phdr->p_offset + phdr->p_filesz) {
 280                 nhdr = (Elf32_Nhdr *)(uintptr_t)((char*)data + offset);
 281                 memset(&nhdr_l, 0, sizeof(Elf32_Nhdr));
 282                 if (!xlatetom(elf, elfhdr, &nhdr->n_type, &nhdr_l.n_type,
 283                         ELF_T_WORD, sizeof(Elf32_Word)) ||
 284                     !xlatetom(elf, elfhdr, &nhdr->n_descsz, &nhdr_l.n_descsz,
 285                         ELF_T_WORD, sizeof(Elf32_Word)) ||
 286                     !xlatetom(elf, elfhdr, &nhdr->n_namesz, &nhdr_l.n_namesz,
 287                         ELF_T_WORD, sizeof(Elf32_Word)))
 288                         break;
 289
 290                 name = (char *)((char *)nhdr + sizeof(Elf32_Nhdr));
 291                 switch (nhdr_l.n_type) {
 292                 case NT_PRSTATUS: {
 293                         raw_size = 0;
 294                         if (elfhdr->e_ident[EI_OSABI] == ELFOSABI_FREEBSD &&
 295                             nhdr_l.n_namesz == 0x8 &&
 296                             !strcmp(name,"FreeBSD")) {
 297                                 if (elfhdr->e_ident[EI_CLASS] == ELFCLASS32) {
 298                                         raw_size = (uint64_t)*((uint32_t *)
 299                                             (uintptr_t)(name +
 300                                                 ELF_ALIGN((int32_t)
 301                                                 nhdr_l.n_namesz, 4) + 8));
 302                                         ver = (uintptr_t)NOTE_OFFSET_32(nhdr,
 303                                             nhdr_l.n_namesz,0);
 304                                         if (*((int *)ver) == 1)
 305                                                 pid = PID32(nhdr,
 306                                                     nhdr_l.n_namesz, 24);
 307                                 } else {
 308                                         raw_size = *((uint64_t *)(uintptr_t)
 309                                             (name + ELF_ALIGN((int32_t)
 310                                                 nhdr_l.n_namesz, 8) + 16));
 311                                         ver = (uintptr_t)NOTE_OFFSET_64(nhdr,
 312                                             nhdr_l.n_namesz,0);
 313                                         if (*((int *)ver) == 1)
 314                                                 pid = PID64(nhdr,
 315                                                     nhdr_l.n_namesz, 40);
 316                                 }
 317                                 xlatetom(elf, elfhdr, &raw_size, &raw_size,
 318                                     ELF_T_WORD, sizeof(uint64_t));
 319                                 xlatetom(elf, elfhdr, &pid, &pid, ELF_T_WORD,
 320                                     sizeof(pid_t));
 321                         }
 322
 323                         if (raw_size != 0 && style == STYLE_SYSV) {
 324                                 (void) snprintf(buf, BUF_SIZE, "%s/%d",
 325                                     ".reg", pid);
 326                                 tbl_append();
 327                                 tbl_print(buf, 0);
 328                                 tbl_print_num(raw_size, radix, 1);
 329                                 tbl_print_num(0, radix, 2);
 330                                 if (!reg_pseudo) {
 331                                         tbl_append();
 332                                         tbl_print(".reg", 0);
 333                                         tbl_print_num(raw_size, radix, 1);
 334                                         tbl_print_num(0, radix, 2);
 335                                         reg_pseudo = 1;
 336                                         text_size_total += raw_size;
 337                                 }
 338                                 text_size_total += raw_size;
 339                         }
 340                 }
 341                 break;
 342                 case NT_FPREGSET:       /* same as NT_PRFPREG */
 343                         if (style == STYLE_SYSV) {
 344                                 (void) snprintf(buf, BUF_SIZE,
 345                                     "%s/%d", ".reg2", pid);
 346                                 tbl_append();
 347                                 tbl_print(buf, 0);
 348                                 tbl_print_num(nhdr_l.n_descsz, radix, 1);
 349                                 tbl_print_num(0, radix, 2);
 350                                 if (!reg2_pseudo) {
 351                                         tbl_append();
 352                                         tbl_print(".reg2", 0);
 353                                         tbl_print_num(nhdr_l.n_descsz, radix,
 354                                             1);
 355                                         tbl_print_num(0, radix, 2);
 356                                         reg2_pseudo = 1;
 357                                         text_size_total += nhdr_l.n_descsz;
 358                                 }
 359                                 text_size_total += nhdr_l.n_descsz;
 360                         }
 361                         break;
 362 #if 0
 363                 case NT_AUXV:
 364                         if (style == STYLE_SYSV) {
 365                                 tbl_append();
 366                                 tbl_print(".auxv", 0);
 367                                 tbl_print_num(nhdr_l.n_descsz, radix, 1);
 368                                 tbl_print_num(0, radix, 2);
 369                                 text_size_total += nhdr_l.n_descsz;
 370                         }
 371                         break;
 372                 case NT_PRXFPREG:
 373                         if (style == STYLE_SYSV) {
 374                                 (void) snprintf(buf, BUF_SIZE, "%s/%d",
 375                                     ".reg-xfp", pid);
 376                                 tbl_append();
 377                                 tbl_print(buf, 0);
 378                                 tbl_print_num(nhdr_l.n_descsz, radix, 1);
 379                                 tbl_print_num(0, radix, 2);
 380                                 if (!regxfp_pseudo) {
 381                                         tbl_append();
 382                                         tbl_print(".reg-xfp", 0);
 383                                         tbl_print_num(nhdr_l.n_descsz, radix,
 384                                             1);
 385                                         tbl_print_num(0, radix, 2);
 386                                         regxfp_pseudo = 1;
 387                                         text_size_total += nhdr_l.n_descsz;
 388                                 }
 389                                 text_size_total += nhdr_l.n_descsz;
 390                         }
 391                         break;
 392                 case NT_PSINFO:
 393 #endif
 394                 case NT_PRPSINFO: {
 395                         /* FreeBSD 64-bit */
 396                         if (nhdr_l.n_descsz == 0x78 &&
 397                                 !strcmp(name,"FreeBSD")) {
 398                                 *cmd_line = strdup(NOTE_OFFSET_64(nhdr,
 399                                     nhdr_l.n_namesz, 33));
 400                         /* FreeBSD 32-bit */
 401                         } else if (nhdr_l.n_descsz == 0x6c &&
 402                                 !strcmp(name,"FreeBSD")) {
 403                                 *cmd_line = strdup(NOTE_OFFSET_32(nhdr,
 404                                     nhdr_l.n_namesz, 25));
 405                         }
 406                         /* Strip any trailing spaces */
 407                         if (*cmd_line != NULL) {
 408                                 char *s;
 409
 410                                 s = *cmd_line + strlen(*cmd_line);
 411                                 while (s > *cmd_line) {
 412                                         if (*(s-1) != 0x20) break;
 413                                         s--;
 414                                 }
 415                                 *s = 0;
 416                         }
 417                         break;
 418                 }
 419 #if 0
 420                 case NT_PSTATUS:
 421                 case NT_LWPSTATUS:
 422 #endif
 423                 default:
 424                         break;
 425                 }
 426                 NEXT_NOTE(elfhdr, nhdr_l.n_descsz, nhdr_l.n_namesz, offset);
 427         }
 428 }
 429
 430 /*
 431  * Handles program headers except for PT_NOTE, when sysv output stlye is
 432  * choosen, prints out the segment name and length. For berkely output
 433  * style only PT_LOAD segments are handled, and text,
 434  * data, bss size is calculated for them.
 435  */
 436 static void
 437 handle_phdr(Elf *elf, GElf_Ehdr *elfhdr, GElf_Phdr *phdr,
 438     uint32_t idx, const char *name)
 439 {
 440         uint64_t addr, size;
 441         int split;
 442         char buf[BUF_SIZE];
 443
 444         if (elf == NULL || elfhdr == NULL || phdr == NULL)
 445                 return;
 446
 447         size = addr = 0;
 448         split = (phdr->p_memsz > 0) &&  (phdr->p_filesz > 0) &&
 449             (phdr->p_memsz > phdr->p_filesz);
 450
 451         if (style == STYLE_SYSV) {
 452                 (void) snprintf(buf, BUF_SIZE,
 453                     "%s%d%s", name, idx, (split ? "a" : ""));
 454                 tbl_append();
 455                 tbl_print(buf, 0);
 456                 tbl_print_num(phdr->p_filesz, radix, 1);
 457                 tbl_print_num(phdr->p_vaddr, radix, 2);
 458                 text_size_total += phdr->p_filesz;
 459                 if (split) {
 460                         size = phdr->p_memsz - phdr->p_filesz;
 461                         addr = phdr->p_vaddr + phdr->p_filesz;
 462                         (void) snprintf(buf, BUF_SIZE, "%s%d%s", name,
 463                             idx, "b");
 464                         text_size_total += phdr->p_memsz - phdr->p_filesz;
 465                         tbl_append();
 466                         tbl_print(buf, 0);
 467                         tbl_print_num(size, radix, 1);
 468                         tbl_print_num(addr, radix, 2);
 469                 }
 470         } else {
 471                 if (phdr->p_type != PT_LOAD)
 472                         return;
 473                 if ((phdr->p_flags & PF_W) && !(phdr->p_flags & PF_X)) {
 474                         data_size += phdr->p_filesz;
 475                         if (split)
 476                                 data_size += phdr->p_memsz - phdr->p_filesz;
 477                 } else {
 478                         text_size += phdr->p_filesz;
 479                         if (split)
 480                                 text_size += phdr->p_memsz - phdr->p_filesz;
 481                 }
 482         }
 483 }
 484
 485 /*
 486  * Given a core dump file, this function maps program headers to segments.
 487  */
 488 static int
 489 handle_core(char const *name, Elf *elf, GElf_Ehdr *elfhdr)
 490 {
 491         GElf_Phdr phdr;
 492         uint32_t i;
 493         char *core_cmdline;
 494         const char *seg_name;
 495
 496         if (name == NULL || elf == NULL || elfhdr == NULL)
 497                 return (RETURN_DATAERR);
 498         if  (elfhdr->e_shnum != 0 || elfhdr->e_type != ET_CORE)
 499                 return (RETURN_DATAERR);
 500
 501         seg_name = core_cmdline = NULL;
 502         if (style == STYLE_SYSV)
 503                 sysv_header(name, NULL);
 504         else
 505                 berkeley_header();
 506
 507         for (i = 0; i < elfhdr->e_phnum; i++) {
 508                 if (gelf_getphdr(elf, i, &phdr) != NULL) {
 509                         if (phdr.p_type == PT_NOTE) {
 510                                 handle_phdr(elf, elfhdr, &phdr, i, "note");
 511                                 handle_core_note(elf, elfhdr, &phdr,
 512                                     &core_cmdline);
 513                         } else {
 514                                 switch(phdr.p_type) {
 515                                 case PT_NULL:
 516                                         seg_name = "null";
 517                                         break;
 518                                 case PT_LOAD:
 519                                         seg_name = "load";
 520                                         break;
 521                                 case PT_DYNAMIC:
 522                                         seg_name = "dynamic";
 523                                         break;
 524                                 case PT_INTERP:
 525                                         seg_name = "interp";
 526                                         break;
 527                                 case PT_SHLIB:
 528                                         seg_name = "shlib";
 529                                         break;
 530                                 case PT_PHDR:
 531                                         seg_name = "phdr";
 532                                         break;
 533                                 case PT_GNU_EH_FRAME:
 534                                         seg_name = "eh_frame_hdr";
 535                                         break;
 536                                 case PT_GNU_STACK:
 537                                         seg_name = "stack";
 538                                         break;
 539                                 default:
 540                                         seg_name = "segment";
 541                                 }
 542                                 handle_phdr(elf, elfhdr, &phdr, i, seg_name);
 543                         }
 544                 }
 545         }
 546
 547         if (style == STYLE_BERKELEY) {
 548                 if (core_cmdline != NULL) {
 549                         berkeley_footer(core_cmdline, name,
 550                             "core file invoked as");
 551                 } else {
 552                         berkeley_footer(core_cmdline, name, "core file");
 553                 }
 554         } else {
 555                 sysv_footer();
 556                 if (core_cmdline != NULL) {
 557                         (void) printf(" (core file invoked as %s)\n\n",
 558                             core_cmdline);
 559                 } else {
 560                         (void) printf(" (core file)\n\n");
 561                 }
 562         }
 563         free(core_cmdline);
 564         return (RETURN_OK);
 565 }
 566
 567 /*
 568  * Given an elf object,ar(1) filename, and based on the output style
 569  * and radix format the various sections and their length will be printed
 570  * or the size of the text, data, bss sections will be printed out.
 571  */
 572 static int
 573 handle_elf(char const *name)
 574 {
 575         GElf_Ehdr elfhdr;
 576         GElf_Shdr shdr;
 577         Elf *elf, *elf1;
 578         Elf_Arhdr *arhdr;
 579         Elf_Scn *scn;
 580         Elf_Cmd elf_cmd;
 581         int exit_code, fd;
 582
 583         if (name == NULL)
 584                 return (RETURN_NOINPUT);
 585
 586         if ((fd = open(name, O_RDONLY, 0)) < 0)
 587                 return (RETURN_NOINPUT);
 588
 589         elf_cmd = ELF_C_READ;
 590         elf1 = elf_begin(fd, elf_cmd, NULL);
 591         while ((elf = elf_begin(fd, elf_cmd, elf1)) != NULL) {
 592                 arhdr = elf_getarhdr(elf);
 593                 if (elf_kind(elf) == ELF_K_NONE && arhdr == NULL) {
 594                         (void) elf_end(elf);
 595                         (void) elf_end(elf1);
 596                         (void) close(fd);
 597                         return (RETURN_DATAERR);
 598                 }
 599                 if (elf_kind(elf) != ELF_K_ELF ||
 600                     (gelf_getehdr(elf, &elfhdr) == NULL)) {
 601                         elf_cmd = elf_next(elf);
 602                         (void) elf_end(elf);
 603                         warnx("%s: File format not recognized",
 604                             arhdr->ar_name);
 605                         continue;
 606                 }
 607                 /* Core dumps are handled separately */
 608                 if (elfhdr.e_shnum == 0 && elfhdr.e_type == ET_CORE) {
 609                         exit_code = handle_core(name, elf, &elfhdr);
 610                         (void) elf_end(elf);
 611                         (void) elf_end(elf1);
 612                         (void) close(fd);
 613                         return (exit_code);
 614                 } else {
 615                         scn = NULL;
 616                         if (style == STYLE_BERKELEY) {
 617                                 berkeley_header();
 618                                 while ((scn = elf_nextscn(elf, scn)) != NULL) {
 619                                         if (gelf_getshdr(scn, &shdr) != NULL)
 620                                                 berkeley_calc(&shdr);
 621                                 }
 622                         } else {
 623                                 sysv_header(name, arhdr);
 624                                 scn = NULL;
 625                                 while ((scn = elf_nextscn(elf, scn)) != NULL) {
 626                                         if (gelf_getshdr(scn, &shdr) != NULL)
 627                                                 sysv_calc(elf, &elfhdr, &shdr);
 628                                 }
 629                         }
 630                         if (style == STYLE_BERKELEY) {
 631                                 if (arhdr != NULL) {
 632                                         berkeley_footer(name, arhdr->ar_name,
 633                                             "ex");
 634                                 } else {
 635                                         berkeley_footer(name, NULL, "ex");
 636                                 }
 637                         } else {
 638                                 sysv_footer();
 639                         }
 640                 }
 641                 elf_cmd = elf_next(elf);
 642                 (void) elf_end(elf);
 643         }
 644         (void) elf_end(elf1);
 645         (void) close(fd);
 646         return (RETURN_OK);
 647 }
 648
 649 /*
 650  * Sysv formatting helper functions.
 651  */
 652 static void
 653 sysv_header(const char *name, Elf_Arhdr *arhdr)
 654 {
 655
 656         text_size_total = 0;
 657         if (arhdr != NULL)
 658                 (void) printf("%s   (ex %s):\n", arhdr->ar_name, name);
 659         else
 660                 (void) printf("%s  :\n", name);
 661         tbl_new(3);
 662         tbl_append();
 663         tbl_print("section", 0);
 664         tbl_print("size", 1);
 665         tbl_print("addr", 2);
 666 }
 667
 668 static void
 669 sysv_calc(Elf *elf, GElf_Ehdr *elfhdr, GElf_Shdr *shdr)
 670 {
 671         char *section_name;
 672
 673         section_name = elf_strptr(elf, elfhdr->e_shstrndx,
 674             (size_t) shdr->sh_name);
 675         if ((shdr->sh_type == SHT_SYMTAB ||
 676             shdr->sh_type == SHT_STRTAB || shdr->sh_type == SHT_RELA ||
 677             shdr->sh_type == SHT_REL) && shdr->sh_addr == 0)
 678                 return;
 679         tbl_append();
 680         tbl_print(section_name, 0);
 681         tbl_print_num(shdr->sh_size, radix, 1);
 682         tbl_print_num(shdr->sh_addr, radix, 2);
 683         text_size_total += shdr->sh_size;
 684 }
 685
 686 static void
 687 sysv_footer(void)
 688 {
 689         tbl_append();
 690         tbl_print("Total", 0);
 691         tbl_print_num(text_size_total, radix, 1);
 692         tbl_flush();
 693         putchar('\n');
 694 }
 695
 696 /*
 697  * berkeley style output formatting helper functions.
 698  */
 699 static void
 700 berkeley_header(void)
 701 {
 702         static int printed;
 703
 704         text_size = data_size = bss_size = 0;
 705         if (!printed) {
 706                 tbl_new(6);
 707                 tbl_append();
 708                 tbl_print("text", 0);
 709                 tbl_print("data", 1);
 710                 tbl_print("bss", 2);
 711                 if (radix == RADIX_OCTAL)
 712                         tbl_print("oct", 3);
 713                 else
 714                         tbl_print("dec", 3);
 715                 tbl_print("hex", 4);
 716                 tbl_print("filename", 5);
 717                 printed = 1;
 718         }
 719 }
 720
 721 static void
 722 berkeley_calc(GElf_Shdr *shdr)
 723 {
 724         if (shdr != NULL) {
 725                 if (!(shdr->sh_flags & SHF_ALLOC))
 726                         return;
 727                 if ((shdr->sh_flags & SHF_ALLOC) &&
 728                     ((shdr->sh_flags & SHF_EXECINSTR) ||
 729                     !(shdr->sh_flags & SHF_WRITE)))
 730                         text_size += shdr->sh_size;
 731                 else if ((shdr->sh_flags & SHF_ALLOC) &&
 732                     (shdr->sh_flags & SHF_WRITE) &&
 733                     (shdr->sh_type != SHT_NOBITS))
 734                         data_size += shdr->sh_size;
 735                 else
 736                         bss_size += shdr->sh_size;
 737         }
 738 }
 739
 740 static void
 741 berkeley_totals(void)
 742 {
 743         long unsigned int grand_total;
 744
 745         grand_total = text_size_total + data_size_total + bss_size_total;
 746         tbl_append();
 747         tbl_print_num(text_size_total, radix, 0);
 748         tbl_print_num(data_size_total, radix, 1);
 749         tbl_print_num(bss_size_total, radix, 2);
 750         if (radix == RADIX_OCTAL)
 751                 tbl_print_num(grand_total, RADIX_OCTAL, 3);
 752         else
 753                 tbl_print_num(grand_total, RADIX_DECIMAL, 3);
 754         tbl_print_num(grand_total, RADIX_HEX, 4);
 755 }
 756
 757 static void
 758 berkeley_footer(const char *name, const char *ar_name, const char *msg)
 759 {
 760         char buf[BUF_SIZE];
 761
 762         total_size = text_size + data_size + bss_size;
 763         if (show_totals) {
 764                 text_size_total += text_size;
 765                 bss_size_total += bss_size;
 766                 data_size_total += data_size;
 767         }
 768
 769         tbl_append();
 770         tbl_print_num(text_size, radix, 0);
 771         tbl_print_num(data_size, radix, 1);
 772         tbl_print_num(bss_size, radix, 2);
 773         if (radix == RADIX_OCTAL)
 774                 tbl_print_num(total_size, RADIX_OCTAL, 3);
 775         else
 776                 tbl_print_num(total_size, RADIX_DECIMAL, 3);
 777         tbl_print_num(total_size, RADIX_HEX, 4);
 778         if (ar_name != NULL && name != NULL)
 779                 (void) snprintf(buf, BUF_SIZE, "%s (%s %s)", ar_name, msg,
 780                     name);
 781         else if (ar_name != NULL && name == NULL)
 782                 (void) snprintf(buf, BUF_SIZE, "%s (%s)", ar_name, msg);
 783         else
 784                 (void) snprintf(buf, BUF_SIZE, "%s", name);
 785         tbl_print(buf, 5);
 786 }
 787
 788
 789 static void
 790 tbl_new(int col)
 791 {
 792
 793         assert(tb == NULL);
 794         assert(col > 0);
 795         if ((tb = calloc(1, sizeof(*tb))) == NULL)
 796                 err(EXIT_FAILURE, "calloc");
 797         if ((tb->tbl = calloc(col, sizeof(*tb->tbl))) == NULL)
 798                 err(EXIT_FAILURE, "calloc");
 799         if ((tb->width = calloc(col, sizeof(*tb->width))) == NULL)
 800                 err(EXIT_FAILURE, "calloc");
 801         tb->col = col;
 802         tb->row = 0;
 803 }
 804
 805 static void
 806 tbl_print(const char *s, int col)
 807 {
 808         int len;
 809
 810         assert(tb != NULL && tb->col > 0 && tb->row > 0 && col < tb->col);
 811         assert(s != NULL && tb->tbl[col][tb->row - 1] == NULL);
 812         if ((tb->tbl[col][tb->row - 1] = strdup(s)) == NULL)
 813                 err(EXIT_FAILURE, "strdup");
 814         len = strlen(s);
 815         if (len > tb->width[col])
 816                 tb->width[col] = len;
 817 }
 818
 819 static void
 820 tbl_print_num(uint64_t num, enum radix_style rad, int col)
 821 {
 822         char buf[BUF_SIZE];
 823
 824         (void) snprintf(buf, BUF_SIZE, (rad == RADIX_DECIMAL ? "%ju" :
 825             ((rad == RADIX_OCTAL) ? "0%jo" : "0x%jx")), (uintmax_t) num);
 826         tbl_print(buf, col);
 827 }
 828
 829 static void
 830 tbl_append(void)
 831 {
 832         int i;
 833
 834         assert(tb != NULL && tb->col > 0);
 835         tb->row++;
 836         for (i = 0; i < tb->col; i++) {
 837                 tb->tbl[i] = realloc(tb->tbl[i], sizeof(*tb->tbl[i]) * tb->row);
 838                 if (tb->tbl[i] == NULL)
 839                         err(EXIT_FAILURE, "realloc");
 840                 tb->tbl[i][tb->row - 1] = NULL;
 841         }
 842 }
 843
 844 static void
 845 tbl_flush(void)
 846 {
 847         const char *str;
 848         int i, j;
 849
 850         if (tb == NULL)
 851                 return;
 852
 853         assert(tb->col > 0);
 854         for (i = 0; i < tb->row; i++) {
 855                 if (style == STYLE_BERKELEY)
 856                         printf("  ");
 857                 for (j = 0; j < tb->col; j++) {
 858                         str = (tb->tbl[j][i] != NULL ? tb->tbl[j][i] : "");
 859                         if (style == STYLE_SYSV && j == 0)
 860                                 printf("%-*s", tb->width[j], str);
 861                         else if (style == STYLE_BERKELEY && j == tb->col - 1)
 862                                 printf("%s", str);
 863                         else
 864                                 printf("%*s", tb->width[j], str);
 865                         if (j == tb->col -1)
 866                                 putchar('\n');
 867                         else
 868                                 printf("   ");
 869                 }
 870         }
 871
 872         for (i = 0; i < tb->col; i++) {
 873                 for (j = 0; j < tb->row; j++) {
 874                         if (tb->tbl[i][j])
 875                                 free(tb->tbl[i][j]);
 876                 }
 877                 free(tb->tbl[i]);
 878         }
 879         free(tb->tbl);
 880         free(tb->width);
 881         free(tb);
 882         tb = NULL;
 883 }
 884
 885 #define USAGE_MESSAGE   "\
 886 Usage: %s [options] file ...\n\
 887   Display sizes of ELF sections.\n\n\
 888   Options:\n\
 889   --format=format    Display output in specified format.  Supported\n\
 890                      values are `berkeley' and `sysv'.\n\
 891   --help             Display this help message and exit.\n\
 892   --radix=radix      Display numeric values in the specified radix.\n\
 893                      Supported values are: 8, 10 and 16.\n\
 894   --totals           Show cumulative totals of section sizes.\n\
 895   --version          Display a version identifier and exit.\n\
 896   -A                 Equivalent to `--format=sysv'.\n\
 897   -B                 Equivalent to `--format=berkeley'.\n\
 898   -V                 Equivalent to `--version'.\n\
 899   -d                 Equivalent to `--radix=10'.\n\
 900   -h                 Same as option --help.\n\
 901   -o                 Equivalent to `--radix=8'.\n\
 902   -t                 Equivalent to option --totals.\n\
 903   -x                 Equivalent to `--radix=16'.\n"
 904
 905 static void
 906 usage(void)
 907 {
 908         (void) fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME());
 909         exit(EXIT_FAILURE);
 910 }
 911
 912 static void
 913 show_version(void)
 914 {
 915         (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), elftc_version());
 916         exit(EXIT_SUCCESS);
 917 }