projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| d0e1559e JH |
1 | /* |
| 2 | * Copyright (c) 1994 University of Maryland | |
| 3 | * All Rights Reserved. | |
| 4 | * | |
| 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. | |
| 14 | * | |
| 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. | |
| 21 | * | |
| 22 | * Author: James da Silva, Systems Design and Analysis Group | |
| 23 | * Computer Science Department | |
| 24 | * University of Maryland at College Park | |
| 25 | */ | |
| 26 | /* | |
| 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. | |
| 33 | */ | |
| 34 | #include <stdio.h> | |
| 35 | #include <string.h> | |
| 36 | ||
| 37 | struct stub { | |
| 38 | char *name; | |
| 39 | int (*f)(); | |
| 40 | }; | |
| 41 | ||
| 42 | extern struct stub entry_points[]; | |
| 43 | ||
| 44 | int main(int argc, char **argv) | |
| 45 | { | |
| 46 | char *slash, *basename; | |
| 47 | struct stub *ep; | |
| 48 | ||
| 49 | if(argv[0] == NULL || *argv[0] == '\0') | |
| 50 | crunched_usage(); | |
| 51 | ||
| 52 | slash = strrchr(argv[0], '/'); | |
| 53 | basename = slash? slash+1 : argv[0]; | |
| 54 | ||
| b051c828 JH |
55 | if (!strcmp(argv[0], "-")) |
| 56 | basename="sh"; | |
| d0e1559e JH |
57 | for(ep=entry_points; ep->name != NULL; ep++) |
| 58 | if(!strcmp(basename, ep->name)) break; | |
| 59 | ||
| 60 | if(ep->name) | |
| 61 | return ep->f(argc, argv); | |
| 62 | else { | |
| 63 | fprintf(stderr, "%s: %s not compiled in\n", EXECNAME, basename); | |
| 64 | crunched_usage(); | |
| 65 | } | |
| 66 | } | |
| 67 | ||
| 68 | ||
| 69 | int crunched_main(int argc, char **argv) | |
| 70 | { | |
| 71 | struct stub *ep; | |
| 72 | int columns, len; | |
| 73 | ||
| 74 | if(argc <= 1) | |
| 75 | crunched_usage(); | |
| 76 | ||
| 77 | return main(--argc, ++argv); | |
| 78 | } | |
| 79 | ||
| 80 | ||
| 81 | int crunched_usage() | |
| 82 | { | |
| 83 | int columns, len; | |
| 84 | struct stub *ep; | |
| 85 | ||
| 86 | fprintf(stderr, "Usage: %s <prog> <args> ..., where <prog> is one of:\n", | |
| 87 | EXECNAME); | |
| 88 | columns = 0; | |
| 89 | for(ep=entry_points; ep->name != NULL; ep++) { | |
| 90 | len = strlen(ep->name) + 1; | |
| 91 | if(columns+len < 80) | |
| 92 | columns += len; | |
| 93 | else { | |
| 94 | fprintf(stderr, "\n"); | |
| 95 | columns = len; | |
| 96 | } | |
| 97 | fprintf(stderr, " %s", ep->name); | |
| 98 | } | |
| 99 | fprintf(stderr, "\n"); | |
| 100 | exit(1); | |
| 101 | } | |
| 102 | ||
| 103 | /* end of crunched_main.c */ | |
| 104 |