X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=debianutils%2Fwhich.c;h=c0f897809825a9ad725b88e09b5b5af113e7ed42;hb=2b1559056cf32c42675ecd937796e1455bcb5c2c;hp=1558e5c6daa03760e5514f1a516e6da15151529a;hpb=5e34ff29bcc870936ab18172f438a34d042d4e03;p=oweals%2Fbusybox.git

diff --git a/debianutils/which.c b/debianutils/which.c
index 1558e5c6d..c0f897809 100644
--- a/debianutils/which.c
+++ b/debianutils/which.c
@@ -1,90 +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-$(CONFIG_WHICH) += which.o
+
+//usage:#define which_trivial_usage
+//usage:       "[COMMAND]..."
+//usage:#define which_full_usage "\n\n"
+//usage:       "Locate a COMMAND"
+//usage:
+//usage:#define which_example_usage
+//usage:       "$ which login\n"
+//usage:       "/bin/login\n"
 
 #include "libbb.h"
 
 int which_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int which_main(int argc UNUSED_PARAM, char **argv)
 {
-	IF_DESKTOP(int opt;)
-	int status = EXIT_SUCCESS;
-	char *path;
-	char *p;
+	const char *env_path;
+	int status = 0;
+
+	env_path = getenv("PATH");
+	if (!env_path)
+		env_path = bb_default_root_path;
 
 	opt_complementary = "-1"; /* at least one argument */
-	IF_DESKTOP(opt =) getopt32(argv, "a");
+	getopt32(argv, "a");
 	argv += optind;
 
-	/* 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=" */
-	}
-
 	do {
-#if ENABLE_DESKTOP
-/* Much bloat just to support -a */
-		if (strchr(*argv, '/')) {
-			if (execable_file(*argv)) {
-				puts(*argv);
-				continue;
-			}
-			status = EXIT_FAILURE;
-		} else {
-			char *path2 = xstrdup(path);
-			char *tmp = path2;
+		int missing = 1;
 
-			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 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 {
-			char *path2 = xstrdup(path);
-			char *tmp = path2;
-			p = find_execable(*argv, &tmp);
-			free(path2);
-			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;
-#endif
-	} while (*(++argv) != NULL);
+		status |= missing;
+	} while (*++argv);
 
-	fflush_stdout_and_exit(status);
+	return status;
 }