1 /*- 2 * Copyright (c) 1998, Peter Wemm <peter@netplex.com.au> 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/usr.bin/objformat/objformat.c,v 1.6 1998/10/24 02:01:30 jdp Exp $ 27 */ 28 29 #include <err.h> 30 #include <objformat.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <string.h> 34 #include <unistd.h> 35 36 int 37 main(int argc, char **argv) 38 { 39 char objformat[32]; 40 char *path, *chunk; 41 char *cmd, *newcmd = NULL; 42 char *objformat_path; 43 44 if (getobjformat(objformat, sizeof objformat, &argc, argv) == -1) 45 errx(1, "Invalid object format"); 46 47 cmd = strrchr(argv[0], '/'); 48 if (cmd != NULL) 49 cmd++; 50 else 51 cmd = argv[0]; 52 53 if (strcmp(cmd, "objformat") == 0) { 54 if (argc != 1) { 55 fprintf(stderr, "Usage: objformat\n"); 56 exit(1); 57 } 58 printf("%s\n", objformat); 59 exit(0); 60 } 61 62 /* 'make world' glue */ 63 objformat_path = getenv("OBJFORMAT_PATH"); 64 if (objformat_path == NULL) 65 objformat_path = "/usr/libexec"; 66 path = strdup(objformat_path); 67 68 setenv("OBJFORMAT", objformat, 1); 69 70 while ((chunk = strsep(&path, ":")) != NULL) { 71 if (newcmd != NULL) { 72 free(newcmd); 73 newcmd = NULL; 74 } 75 asprintf(&newcmd, "%s/%s/%s", chunk, objformat, cmd); 76 if (newcmd == NULL) 77 err(1, "cannot allocate memory for new command"); 78 79 argv[0] = newcmd; 80 execv(newcmd, argv); 81 } 82 err(1, "could not exec %s/%s in %s", objformat, cmd, objformat_path); 83 } 84