diff options
Diffstat (limited to 'release/src/router/busybox/debianutils/which.c')
| -rw-r--r-- | release/src/router/busybox/debianutils/which.c | 136 |
1 files changed, 73 insertions, 63 deletions
diff --git a/release/src/router/busybox/debianutils/which.c b/release/src/router/busybox/debianutils/which.c index 79a89c4e..748e6dc2 100644 --- a/release/src/router/busybox/debianutils/which.c +++ b/release/src/router/busybox/debianutils/which.c @@ -2,79 +2,89 @@ /* * Which implementation for busybox * - * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org> + * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> + * Copyright (C) 2006 Gabriel Somlo <somlo at cmu.edu> * - * 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 + * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. * + * Based on which from debianutils */ -/* getopt not needed */ -#include <string.h> -#include <stdio.h> -#include <stdlib.h> -#include "busybox.h" +#include "libbb.h" -extern int which_main(int argc, char **argv) +int which_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int which_main(int argc UNUSED_PARAM, char **argv) { - char *path_list, *path_n; - struct stat filestat; - int i, count=1, found, status = EXIT_SUCCESS; + USE_DESKTOP(int opt;) + int status = EXIT_SUCCESS; + char *path; + char *p; - if (argc <= 1 || **(argv + 1) == '-') - bb_show_usage(); - argc--; + opt_complementary = "-1"; /* at least one argument */ + USE_DESKTOP(opt =) getopt32(argv, "a"); + argv += optind; - path_list = getenv("PATH"); - if (path_list != NULL) { - for(i=strlen(path_list); i > 0; i--) - if (path_list[i]==':') { - path_list[i]=0; - count++; - } - } else { - path_list = "/bin\0/sbin\0/usr/bin\0/usr/sbin\0/usr/local/bin"; - count = 5; + /* This matches what is seen on e.g. ubuntu. + * "which" there is a shell script. */ + path = getenv("PATH"); + if (!path) { + path = (char*)bb_PATH_root_path; + putenv(path); + path += 5; /* skip "PATH=" */ } - while(argc-- > 0) { - path_n = path_list; - argv++; - found = 0; - for (i = 0; i < count; i++) { - char *buf; - buf = concat_path_file(path_n, *argv); - if (stat (buf, &filestat) == 0 - && filestat.st_mode & S_IXUSR) - { - puts(buf); - found = 1; - break; + do { +#if ENABLE_DESKTOP +/* Much bloat just to support -a */ + if (strchr(*argv, '/')) { + if (execable_file(*argv)) { + puts(*argv); + continue; } - free(buf); - path_n += (strlen(path_n) + 1); - } - if (!found) status = EXIT_FAILURE; - } - return status; -} + } else { + char *path2 = xstrdup(path); + char *tmp = path2; -/* -Local Variables: -c-file-style: "linux" -c-basic-offset: 4 -tab-width: 4 -End: -*/ + p = find_execable(*argv, &tmp); + if (!p) + status = EXIT_FAILURE; + else { + print: + puts(p); + free(p); + if (opt) { + /* -a: show matches in all PATH components */ + if (tmp) { + p = find_execable(*argv, &tmp); + if (p) + goto print; + } + } + } + free(path2); + } +#else +/* Just ignoring -a */ + if (strchr(*argv, '/')) { + if (execable_file(*argv)) { + puts(*argv); + continue; + } + } else { + char *path2 = xstrdup(path); + char *tmp = path2; + p = find_execable(*argv, &tmp); + free(path2); + if (p) { + puts(p); + free(p); + continue; + } + } + status = EXIT_FAILURE; +#endif + } while (*(++argv) != NULL); + + fflush_stdout_and_exit(status); +} |