1/* vi: set sw=4 ts=4: */ 2/* 3 * Which implementation for busybox 4 * 5 * Copyright (C) 1999,2000,2001 by Lineo, inc. 6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24/* getopt not needed */ 25#include <string.h> 26#include <stdio.h> 27#include <stdlib.h> 28#include "busybox.h" 29 30extern int which_main(int argc, char **argv) 31{ 32 char *path_list, *path_n; 33 struct stat filestat; 34 int i, count=1, found, status = EXIT_SUCCESS; 35 36 if (argc <= 1 || **(argv + 1) == '-') 37 show_usage(); 38 argc--; 39 40 path_list = getenv("PATH"); 41 if (!path_list) 42 path_list = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin"; 43 44 /* Replace colons with zeros in path_parsed and count them */ 45 for(i=strlen(path_list); i > 0; i--) 46 if (path_list[i]==':') { 47 path_list[i]=0; 48 count++; 49 } 50 51 while(argc-- > 0) { 52 path_n = path_list; 53 argv++; 54 found = 0; 55 for (i = 0; i < count; i++) { 56 char *buf; 57 buf = concat_path_file(path_n, *argv); 58 if (stat (buf, &filestat) == 0 59 && filestat.st_mode & S_IXUSR) 60 { 61 puts(buf); 62 found = 1; 63 break; 64 } 65 free(buf); 66 path_n += (strlen(path_n) + 1); 67 } 68 if (!found) 69 status = EXIT_FAILURE; 70 } 71 return status; 72} 73 74/* 75Local Variables: 76c-file-style: "linux" 77c-basic-offset: 4 78tab-width: 4 79End: 80*/ 81