1 /* vi: set sw=4 ts=4: */
3 * Which implementation for busybox
5 * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 /* getopt not needed */
29 static int file_exists(char *file)
33 if (stat(file, &filestat) == 0 &&
34 S_ISREG(filestat.st_mode) &&
35 filestat.st_mode & S_IXUSR)
41 extern int which_main(int argc, char **argv)
43 char *path_list, *path_n;
44 int i, count=1, found, status = EXIT_SUCCESS;
46 if (argc <= 1 || **(argv + 1) == '-')
50 path_list = getenv("PATH");
51 if (path_list != NULL) {
52 for(i=strlen(path_list); i > 0; i--)
53 if (path_list[i]==':') {
58 path_list = "/bin\0/sbin\0/usr/bin\0/usr/sbin\0/usr/local/bin";
69 * Check if we were given the full path, first.
70 * Otherwise see if the file exists in our $PATH.
73 if (file_exists(buf)) {
77 for (i = 0; i < count; i++) {
78 buf = concat_path_file(path_n, *argv);
79 if (file_exists(buf)) {
85 path_n += (strlen(path_n) + 1);
89 status = EXIT_FAILURE;