X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=debianutils%2Fwhich.c;h=c0f897809825a9ad725b88e09b5b5af113e7ed42;hb=2b1559056cf32c42675ecd937796e1455bcb5c2c;hp=e83c752a13c77bb87402c83dfd7843d777a1a7f4;hpb=f6f43df60bbd69ae5ea83b9012beb953a2baf116;p=oweals%2Fbusybox.git

diff --git a/debianutils/which.c b/debianutils/which.c
index e83c752a1..c0f897809 100644
--- a/debianutils/which.c
+++ b/debianutils/which.c
@@ -1,43 +1,72 @@
 /* vi: set sw=4 ts=4: */
 /*
- * Which implementation for busybox
- *
  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  * Copyright (C) 2006 Gabriel Somlo <somlo at cmu.edu>
  *
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
- *
- * Based on which from debianutils
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config WHICH
+//config:	bool "which"
+//config:	default y
+//config:	help
+//config:	  which is used to find programs in your PATH and
+//config:	  print out their pathnames.
+
+//applet:IF_WHICH(APPLET(which, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_WHICH) += which.o
 
-#include "busybox.h"
+//usage:#define which_trivial_usage
+//usage:       "[COMMAND]..."
+//usage:#define which_full_usage "\n\n"
+//usage:       "Locate a COMMAND"
+//usage:
+//usage:#define which_example_usage
+//usage:       "$ which login\n"
+//usage:       "/bin/login\n"
 
-int which_main(int argc, char **argv)
+#include "libbb.h"
+
+int which_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int which_main(int argc UNUSED_PARAM, char **argv)
 {
-	int status = EXIT_SUCCESS;
-	char *p;
+	const char *env_path;
+	int status = 0;
+
+	env_path = getenv("PATH");
+	if (!env_path)
+		env_path = bb_default_root_path;
 
-	if (argc <= 1 || argv[1][0] == '-') {
-		bb_show_usage();
-	}
+	opt_complementary = "-1"; /* at least one argument */
+	getopt32(argv, "a");
+	argv += optind;
 
-	while (--argc > 0) {
-		argv++;
+	do {
+		int missing = 1;
+
+		/* If file contains a slash don't use PATH */
 		if (strchr(*argv, '/')) {
-			if (execable_file(*argv)) {
+			if (file_is_executable(*argv)) {
+				missing = 0;
 				puts(*argv);
-				continue;
 			}
 		} else {
-			p = find_execable(*argv);
-			if (p) {
+			char *path;
+			char *tmp;
+			char *p;
+
+			path = tmp = xstrdup(env_path);
+			while ((p = find_executable(*argv, &tmp)) != NULL) {
+				missing = 0;
 				puts(p);
 				free(p);
-				continue;
+				if (!option_mask32) /* -a not set */
+					break;
 			}
+			free(path);
 		}
-		status = EXIT_FAILURE;
-	}
+		status |= missing;
+	} while (*++argv);
 
-	bb_fflush_stdout_and_exit(status);
+	return status;
 }