win32: add get_busybox_exec_path(), which is bb_busybox_exec_path

This function will become bb_busybox_exec_path because there is no
fixed installation location on Windows.

3 files changed, 17 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 0933f5385..11d7f27d3 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1562,7 +1562,11 @@ extern const char bb_path_group_file[];
 extern const char bb_path_motd_file[];
 extern const char bb_path_wtmp_file[];
 extern const char bb_dev_null[];
+#if ENABLE_PLATFORM_MINGW32
+#define bb_busybox_exec_path get_busybox_exec_path()
+#else
 extern const char bb_busybox_exec_path[];
+#endif
 /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
  * but I want to save a few bytes here */
 extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
diff --git a/libbb/messages.c b/libbb/messages.c
index 07b522bf4..ffa8d00cd 100644
--- a/libbb/messages.c
+++ b/libbb/messages.c
@@ -44,7 +44,11 @@ const char bb_path_group_file[] ALIGN1 = "/etc/group";
 const char bb_path_gshadow_file[] ALIGN1 = "/etc/gshadow";
 const char bb_path_motd_file[] ALIGN1 = "/etc/motd";
 const char bb_dev_null[] ALIGN1 = "/dev/null";
+#if ENABLE_PLATFORM_MINGW32
+/* bb_busybox_exec_path is redefined to get_busybox_exec_path() in libbb.h */
+#else
 const char bb_busybox_exec_path[] ALIGN1 = CONFIG_BUSYBOX_EXEC_PATH;
+#endif
 const char bb_default_login_shell[] ALIGN1 = LIBBB_DEFAULT_LOGIN_SHELL;
 /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
  * but I want to save a few bytes here. Check libbb.h before changing! */
diff --git a/win32/mingw.c b/win32/mingw.c
index b879bfbae..57573bf60 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -372,3 +372,12 @@ char *realpath(const char *path, char *resolved_path)
         /* FIXME: need normalization */
         return strcpy(resolved_path, path);
 }
+
+const char *get_busybox_exec_path(void)
+{
+        static char path[PATH_MAX] = "";
+
+        if (!*path)
+                GetModuleFileName(NULL, path, PATH_MAX);
+        return path;
+}