Patch from tito, acked by Bernhard Fischer.

2 files changed, 17 insertions, 8 deletions

diff --git a/util-linux/Config.in b/util-linux/Config.in
index 28292bd40..b91eb69c7 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -354,9 +354,19 @@ config CONFIG_READPROFILE
         help
           This allows you to parse /proc/profile for basic profiling.
 
+config CONFIG_LINUX32
+        default n
+        depends on CONFIG_SETARCH
+
+config CONFIG_LINUX64
+        default n
+        depends on CONFIG_SETARCH
+
 config CONFIG_SETARCH
         bool "setarch"
         default n
+        select CONFIG_LINUX32
+        select CONFIG_LINUX64
         help
           The linux32 utility is used to create a 32bit environment for the
           specified program (usually a shell).  It only makes sense to have
diff --git a/util-linux/setarch.c b/util-linux/setarch.c
index 33588e4ee..d7e1c0917 100644
--- a/util-linux/setarch.c
+++ b/util-linux/setarch.c
@@ -16,7 +16,7 @@
 
 #include "busybox.h"
 
-int setarch_main(int argc, char **argv)
+int setarch_main(int ATTRIBUTE_UNUSED argc, char **argv)
 {
         int pers = -1;
 
@@ -26,9 +26,9 @@ int setarch_main(int argc, char **argv)
          * argv[0]         -> "personality"
          */
 retry:
-        if (!strcmp(argv[0], "linux64"))
+        if (argv[0][5] == '6') /* linux64 */
                 pers = PER_LINUX;
-        else if (!strcmp(argv[0], "linux32"))
+        else if (argv[0][5] == '3') /* linux32 */
                 pers = PER_LINUX32;
         else if (pers == -1 && argv[1] != NULL) {
                 pers = PER_LINUX32;
@@ -42,12 +42,11 @@ retry:
                 bb_show_usage();
 
         /* Try to set personality */
-        if (personality(pers) < 0)
-                goto failure;
+        if (personality(pers) >= 0) {
 
-        /* Try to execute the program */
-        execvp(argv[0], argv);
+                /* Try to execute the program */
+                execvp(argv[0], argv);
+        }
 
-failure:
         bb_perror_msg_and_die("%s", argv[0]);
 }