usr.bin/size/size.c

   1 /*
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1988, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)size.c   8.2 (Berkeley) 12/9/93
  35  * $FreeBSD: src/usr.bin/size/size.c,v 1.5 1999/08/28 01:05:44 peter Exp $
  36  * $DragonFly: src/usr.bin/size/Attic/size.c,v 1.3 2003/10/04 20:36:50 hmp Exp $
  37  */
  38
  39 #include <sys/param.h>
  40 #include <sys/file.h>
  41 #include <err.h>
  42 #include <a.out.h>
  43 #include <unistd.h>
  44 #include <stdlib.h>
  45 #include <stdio.h>
  46 #include <string.h>
  47
  48 int     show(int, char *);
  49 static void     usage(void);
  50
  51 int
  52 main(int argc, char **argv)
  53 {
  54         int ch, eval;
  55
  56         while ((ch = getopt(argc, argv, "")) != -1)
  57                 switch(ch) {
  58                 case '?':
  59                 default:
  60                         usage();
  61                 }
  62         argc -= optind;
  63         argv += optind;
  64
  65         eval = 0;
  66         if (*argv)
  67                 do {
  68                         eval |= show(argc, *argv);
  69                 } while (*++argv);
  70         else
  71                 eval |= show(1, "a.out");
  72         exit(eval);
  73 }
  74
  75 int
  76 show(int count, char *name)
  77 {
  78         static int first = 1;
  79         struct exec head;
  80         u_long total;
  81         int fd;
  82
  83         if ((fd = open(name, O_RDONLY, 0)) < 0) {
  84                 warn("%s", name);
  85                 return (1);
  86         }
  87         if (read(fd, &head, sizeof(head)) != sizeof(head) || N_BADMAG(head)) {
  88                 (void)close(fd);
  89                 warnx("%s: not in a.out format", name);
  90                 return (1);
  91         }
  92         (void)close(fd);
  93
  94         if (first) {
  95                 first = 0;
  96                 (void)printf("text\tdata\tbss\tdec\thex\n");
  97         }
  98         total = head.a_text + head.a_data + head.a_bss;
  99         (void)printf("%lu\t%lu\t%lu\t%lu\t%lx", (u_long)head.a_text,
 100             (u_long)head.a_data, (u_long)head.a_bss, total, total);
 101         if (count > 1)
 102                 (void)printf("\t%s", name);
 103         (void)printf("\n");
 104         return (0);
 105 }
 106
 107 static void
 108 usage(void)
 109 {
 110         (void)fprintf(stderr, "usage: size [file ...]\n");
 111         exit(1);
 112 }