busybox: fail if --install is not given an absolute path

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

1 files changed, 3 insertions, 4 deletions

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 69cac2e9a..fc84d36ec 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -721,10 +721,9 @@ static int busybox_main(char **argv)
                          * In such case, better use argv[0] as symlink target
                          * if it is a full path name.
                          */
-                        if (argv[0][0] == '/')
-                                busybox = argv[0];
-                        else
-                                busybox = bb_busybox_exec_path;
+                        if (argv[0][0] != '/')
+                                bb_error_msg_and_die("'%s' is not an absolute path", argv[0]);
+                        busybox = argv[0];
                 }
                 /* busybox --install [-s] [DIR]:
                  * -s: make symlinks