4.3BSD - /usr/src/bin/strip.c

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: char copyright[] =
   9: "@(#) Copyright (c) 1983 Regents of the University of California.\n\
  10:  All rights reserved.\n";
  11: #endif not lint
  12: 
  13: #ifndef lint
  14: static char sccsid[] = "@(#)strip.c	5.1 (Berkeley) 4/30/85";
  15: #endif not lint
  16: 
  17: #include <a.out.h>
  18: #include <signal.h>
  19: #include <stdio.h>
  20: #include <sys/file.h>
  21: 
  22: struct  exec head;
  23: int status;
  24: int pagesize;
  25: 
  26: main(argc, argv)
  27:     char *argv[];
  28: {
  29:     register i;
  30: 
  31:     pagesize = getpagesize();
  32:     signal(SIGHUP, SIG_IGN);
  33:     signal(SIGINT, SIG_IGN);
  34:     signal(SIGQUIT, SIG_IGN);
  35:     for (i = 1; i < argc; i++) {
  36:         strip(argv[i]);
  37:         if (status > 1)
  38:             break;
  39:     }
  40:     exit(status);
  41: }
  42: 
  43: strip(name)
  44:     char *name;
  45: {
  46:     register f;
  47:     long size;
  48: 
  49:     f = open(name, O_RDWR);
  50:     if (f < 0) {
  51:         fprintf(stderr, "strip: "); perror(name);
  52:         status = 1;
  53:         goto out;
  54:     }
  55:     if (read(f, (char *)&head, sizeof (head)) < 0 || N_BADMAG(head)) {
  56:         printf("strip: %s not in a.out format\n", name);
  57:         status = 1;
  58:         goto out;
  59:     }
  60:     if ((head.a_syms == 0) && (head.a_trsize == 0) && (head.a_drsize ==0)) {
  61:         printf("strip: %s already stripped\n", name);
  62:         goto out;
  63:     }
  64:     size = (long)head.a_text + head.a_data;
  65:     head.a_syms = head.a_trsize = head.a_drsize = 0;
  66:     if (head.a_magic == ZMAGIC)
  67:         size += pagesize - sizeof (head);
  68:     if (ftruncate(f, size + sizeof (head)) < 0) {
  69:         fprintf("strip: "); perror(name);
  70:         status = 1;
  71:         goto out;
  72:     }
  73:     (void) lseek(f, (long)0, L_SET);
  74:     (void) write(f, (char *)&head, sizeof (head));
  75: out:
  76:     close(f);
  77: }

Defined functions

Defined variables