break out special local mail processing (e.g., mapping to the

[unix-history] / usr / src / usr.bin / size / size.c

/*
* Copyright (c) 1988, 1993
*      The Regents of the University of California.  All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1988, 1993\n\
       The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)size.c      8.2 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/file.h>
#include <errno.h>
#include <a.out.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

void    err __P((const char *, ...));
int     show __P((int, char *));
void    usage __P((void));

int
main(argc, argv)
       int argc;
       char *argv[];
{
       int ch, eval;

       while ((ch = getopt(argc, argv, "")) != EOF)
               switch(ch) {
               case '?':
               default:
                       usage();
               }
       argc -= optind;
       argv += optind;

       eval = 0;
       if (*argv)
               do {
                       eval |= show(argc, *argv);
               } while (*++argv);
       else
               eval |= show(1, "a.out");
       exit(eval);
}

int
show(count, name)
       int count;
       char *name;
{
       static int first = 1;
       struct exec head;
       u_long total;
       int fd;

       if ((fd = open(name, O_RDONLY, 0)) < 0) {
               err("%s: %s", name, strerror(errno));
               return (1);
       }
       if (read(fd, &head, sizeof(head)) != sizeof(head) || N_BADMAG(head)) {
               (void)close(fd);
               err("%s: not in a.out format", name);
               return (1);
       }
       (void)close(fd);

       if (first) {
               first = 0;
               (void)printf("text\tdata\tbss\tdec\thex\n");
       }
       total = head.a_text + head.a_data + head.a_bss;
       (void)printf("%lu\t%lu\t%lu\t%lu\t%lx", head.a_text, head.a_data,
           head.a_bss, total, total);
       if (count > 1)
               (void)printf("\t%s", name);
       (void)printf("\n");
       return (0);
}

void
usage()
{
       (void)fprintf(stderr, "usage: size [file ...]\n");
       exit(1);
}

#if __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

void
#if __STDC__
err(const char *fmt, ...)
#else
err(fmt, va_alist)
       char *fmt;
       va_dcl
#endif
{
       va_list ap;
#if __STDC__
       va_start(ap, fmt);
#else
       va_start(ap);
#endif
       (void)fprintf(stderr, "size: ");
       (void)vfprintf(stderr, fmt, ap);
       va_end(ap);
       (void)fprintf(stderr, "\n");
}