| /* vi: set sw=4 ts=4: */ |
| /* |
| * Which implementation for busybox |
| * |
| * Copyright (C) 1999,2000,2001 by Lineo, inc. |
| * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include "busybox.h" |
| #include <string.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| extern int which_main(int argc, char **argv) |
| { |
| char *path_list, *path_n; |
| struct stat filestat; |
| int i, count=1, found, status = EXIT_SUCCESS; |
| |
| if (argc <= 1 || **(argv + 1) == '-') |
| usage(which_usage); |
| argc--; |
| |
| path_list = getenv("PATH"); |
| if (!path_list) |
| path_list = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin"; |
| |
| /* Replace colons with zeros in path_parsed and count them */ |
| for(i=strlen(path_list); i > 0; i--) |
| if (path_list[i]==':') { |
| path_list[i]=0; |
| count++; |
| } |
| |
| while(argc-- > 0) { |
| path_n = path_list; |
| argv++; |
| found = 0; |
| for (i = 0; i < count; i++) { |
| char buf[strlen(path_n)+1+strlen(*argv)]; |
| strcpy (buf, path_n); |
| strcat (buf, "/"); |
| strcat (buf, *argv); |
| if (stat (buf, &filestat) == 0 |
| && filestat.st_mode & S_IXUSR) |
| { |
| printf ("%s\n", buf); |
| found = 1; |
| break; |
| } |
| path_n += (strlen(path_n) + 1); |
| } |
| if (!found) |
| status = EXIT_FAILURE; |
| } |
| return status; |
| } |
| |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |