2 * Copyright (c) 1994 University of Maryland
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of U.M. not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission. U.M. makes no representations about the
12 * suitability of this software for any purpose. It is provided "as is"
13 * without express or implied warranty.
15 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
17 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
19 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 * Author: James da Silva, Systems Design and Analysis Group
23 * Computer Science Department
24 * University of Maryland at College Park
27 * crunched_main.c - main program for crunched binaries, it branches to a
28 * particular subprogram based on the value of argv[0]. Also included
29 * is a little program invoked when the crunched binary is called via
30 * its EXECNAME. This one prints out the list of compiled-in binaries,
31 * or calls one of them based on argv[1]. This allows the testing of
32 * the crunched binary without creating all the links.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
47 extern char *__progname;
48 extern struct stub entry_points[];
51 main(int argc, char **argv, char **envp)
53 char *slash, *basename;
56 if(argv[0] == NULL || *argv[0] == '\0')
59 slash = strrchr(argv[0], '/');
60 basename = slash? slash+1 : argv[0];
62 for(ep=entry_points; ep->name != NULL; ep++)
63 if(!strcmp(basename, ep->name)) break;
66 return ep->f(argc, argv, envp);
68 fprintf(stderr, "%s: %s not compiled in\n", EXECNAME, basename);
75 crunched_here(char *path)
77 char *slash, *basename;
80 slash = strrchr(path, '/');
81 basename = slash? slash+1 : path;
83 for(ep=entry_points; ep->name != NULL; ep++)
84 if(!strcmp(basename, ep->name))
91 crunched_main(int argc, char **argv, char **envp)
100 slash = strrchr(argv[1], '/');
101 __progname = slash? slash+1 : argv[1];
103 return main(--argc, ++argv, envp);
113 fprintf(stderr, "usage: %s <prog> <args> ..., where <prog> is one of:\n",
116 for(ep=entry_points; ep->name != NULL; ep++) {
117 len = strlen(ep->name) + 1;
121 fprintf(stderr, "\n");
124 fprintf(stderr, " %s", ep->name);
126 fprintf(stderr, "\n");
130 /* end of crunched_main.c */