Make setarch/linux32/linux64 independently selectable

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 24 insertions, 5 deletions

diff --git a/util-linux/setarch.c b/util-linux/setarch.c
index 2e989ec2a..ec473e9cb 100644
--- a/util-linux/setarch.c
+++ b/util-linux/setarch.c
@@ -15,12 +15,28 @@
 //config:         specified program (usually a shell). It only makes sense to have
 //config:         this util on a system that supports both 64bit and 32bit userland
 //config:         (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
+//config:
+//config:config LINUX32
+//config:       bool "linux32"
+//config:       default y
+//config:       select PLATFORM_LINUX
+//config:       help
+//config:         Alias to "setarch linux32".
+//config:
+//config:config LINUX64
+//config:       bool "linux64"
+//config:       default y
+//config:       select PLATFORM_LINUX
+//config:       help
+//config:         Alias to "setarch linux64".
 
 //applet:IF_SETARCH(APPLET(setarch, BB_DIR_BIN, BB_SUID_DROP))
-//applet:IF_SETARCH(APPLET_ODDNAME(linux32, setarch, BB_DIR_BIN, BB_SUID_DROP, linux32))
-//applet:IF_SETARCH(APPLET_ODDNAME(linux64, setarch, BB_DIR_BIN, BB_SUID_DROP, linux64))
+//applet:IF_LINUX32(APPLET_ODDNAME(linux32, setarch, BB_DIR_BIN, BB_SUID_DROP, linux32))
+//applet:IF_LINUX64(APPLET_ODDNAME(linux64, setarch, BB_DIR_BIN, BB_SUID_DROP, linux64))
 
 //kbuild:lib-$(CONFIG_SETARCH) += setarch.o
+//kbuild:lib-$(CONFIG_LINUX32) += setarch.o
+//kbuild:lib-$(CONFIG_LINUX64) += setarch.o
 
 //usage:#define setarch_trivial_usage
 //usage:       "PERSONALITY [-R] PROG ARGS"
@@ -58,12 +74,15 @@ int setarch_main(int argc UNUSED_PARAM, char **argv)
         if (ENABLE_SETARCH && applet_name[0] == 's'
          && argv[1] && is_prefixed_with(argv[1], "linux")
         ) {
-                applet_name = argv[1];
                 argv++;
+                applet_name = argv[0];
         }
-        if (applet_name[5] == '6') /* linux64 */
+        if ((!ENABLE_SETARCH && !ENABLE_LINUX32) || applet_name[5] == '6')
+                /* linux64 */
                 pers = PER_LINUX;
-        else if (applet_name[5] == '3') /* linux32 */
+        else
+        if ((!ENABLE_SETARCH && !ENABLE_LINUX64) || applet_name[5] == '3')
+                /* linux32 */
                 pers = PER_LINUX32;
         else
                 bb_show_usage();