1 files changed, 48 insertions, 0 deletions
diff --git a/util-linux/setarch.c b/util-linux/setarch.c
new file mode 100644
index 0000000..8213382
--- /dev/null
+++ b/util-linux/setarch.c
@@ -0,0 +1,48 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * linux32/linux64 allows for changing uname emulation.
+ *
+ * Copyright 2002 Andi Kleen, SuSE Labs.
+ *
+ * Licensed under GPL v2 or later, see file License for details.
+*/
+
+#include <sys/personality.h>
+
+#include "libbb.h"
+
+int setarch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int setarch_main(int argc UNUSED_PARAM, char **argv)
+{
+	int pers;
+
+	/* Figure out what personality we are supposed to switch to ...
+	 * we can be invoked as either:
+	 * argv[0],argv[1] == "setarch","personality"
+	 * argv[0]         == "personality"
+	 */
+	if (ENABLE_SETARCH && applet_name[0] == 's'
+	 && argv[1] && strncpy(argv[1], "linux", 5)
+	) {
+		applet_name = argv[1];
+		argv++;
+	}
+	if (applet_name[5] == '6') /* linux64 */
+		pers = PER_LINUX;
+	else if (applet_name[5] == '3') /* linux32 */
+		pers = PER_LINUX32;
+	else
+		bb_show_usage();
+
+	argv++;
+	if (argv[0] == NULL)
+		bb_show_usage();
+
+	/* Try to set personality */
+	if (personality(pers) >= 0) {
+		/* Try to execute the program */
+		BB_EXECVP(argv[0], argv);
+	}
+
+	bb_simple_perror_msg_and_die(argv[0]);
+}